CN112128492B - Clamp with self-adjusting temperature compensation function - Google Patents
Clamp with self-adjusting temperature compensation function Download PDFInfo
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- CN112128492B CN112128492B CN202011029947.7A CN202011029947A CN112128492B CN 112128492 B CN112128492 B CN 112128492B CN 202011029947 A CN202011029947 A CN 202011029947A CN 112128492 B CN112128492 B CN 112128492B
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- lining core
- cavity
- clamp body
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- 238000007789 sealing Methods 0.000 claims abstract description 15
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 16
- 239000011780 sodium chloride Substances 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims 2
- 230000008859 change Effects 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 description 7
- 238000007710 freezing Methods 0.000 description 6
- 230000008014 freezing Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/02—Hose-clips
- F16L33/03—Self-locking elastic clips
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
The invention relates to the field of connecting devices, in particular to a self-adjusting temperature compensation hoop for a sealing rubber hose. The self-adjusting temperature compensation hoop comprises a hoop body and an expansion pipe, wherein the hoop body is used for tightly holding a pipe body, the hoop body is provided with a first connecting end and a second connecting end, the first connecting end and the second connecting end are arranged in a crossed mode, and a space is formed between the first connecting end and the second connecting end; the expansion pipe comprises an outer barrel and a lining core, one end of the outer barrel is closed, the other end of the outer barrel is open, a first cavity and a second cavity are formed in the outer barrel and communicated with each other, the extending end of the lining core extends into the first cavity through the open end of the outer barrel, the lining core is in sliding connection with the inner wall of the outer barrel, the extending end of the lining core is connected with a first connecting end of the clamp body, the outer barrel is connected with a second connecting end, and expansion media are completely filled in the second cavity. The function of automatically adjusting the holding force of the hoop at low temperature is realized by utilizing the volume change of the expansion medium in different forms.
Description
Technical Field
The invention relates to the field of connecting devices, in particular to a self-adjusting temperature compensation hoop for a sealing rubber hose.
Background
The application field of the rubber hose covers various industrial production and circulation fields, and is generally responsible for the transmission of media such as water, gas, oil and the like. The rubber hose is attached to the joint by means of the holding force of the hoop in the most common connection mode, and the mode is simple in structure and low in cost.
However, due to the material characteristics of the rubber hose, the sealing force fluctuates with the temperature change and decreases with the relaxation of stress, so that once the clamp is tightened, the state is fixed, and when the external temperature is reduced to the stress relaxation temperature of the rubber hose (stress relaxation: the force for maintaining the applied strain is reduced or even disappears with time), the sealing force value gradually attenuates with the temperature reduction, particularly below 0 ℃, the material elasticity attenuates, the hardness increases, and the leakage phenomenon is easy to occur.
Most of the existing elastic clamps utilize spring elasticity to compensate, for example, the application of Chinese utility model patent with the publication number of CN208845904U discloses a vacuum clamp with adjustable temperature compensation, which comprises an embrace clamp I, an embrace clamp II, a spring, a locking mechanism and a pretightening force adjusting mechanism, wherein the pretightening force is adjusted through an adjusting piece, and the pretightening force is obtained through a pretightening force display mechanism so as to solve the problem of pipeline leakage caused by clamp deformation due to expansion with heat and contraction with cold, but the pretightening force adjusting mechanism in the application needs to be manually adjusted and cannot realize self adjustment; also, as disclosed in chinese patent application publication No. CN108443611A, the present invention discloses an elastic clamp assembly, which includes a clamp body, a locking bolt, a spring, a hollow limiting disc, a limiting post, and a guide frame, and the application uses the elasticity of the spring to compensate, and only compensates the tightening force within a certain range, and compensates the tightening force for a long time, thereby increasing the stress relaxation of the rubber material, and shortening the product life of the rubber hose.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a self-adjusting temperature compensation clamp, which utilizes the volume change of an expansion medium in different forms to realize the function of automatically adjusting the clamping force of the clamp at low temperature.
In order to achieve the purpose, the hoop body comprises a first connecting end and a second connecting end, the first connecting end and the second connecting end are arranged in a crossed mode, a space is formed between the first connecting end and the second connecting end, and when the space between the first connecting end and the second connecting end is reduced, the inner diameter of the hoop body is increased; when the distance between the first connecting end and the second connecting end is increased, the inner diameter of the hoop body is reduced; the expansion pipe comprises an outer barrel and a lining core, one end of the outer barrel is closed, the other end of the outer barrel is open, a first cavity and a second cavity extending from an open end to a closed end along the axial direction of the outer barrel are formed in the outer barrel, the first cavity is communicated with the second cavity, an extending end of the lining core extends into the first cavity through the open end of the outer barrel, the lining core is connected with the inner wall of the outer barrel in a sliding mode, an extending end of the lining core is connected with a first connecting end of the clamp body, the outer barrel is connected with a second connecting end, an expansion medium is completely filled in the second cavity, and when the external temperature is reduced to the temperature at which the stress of the pipe body is relaxed, the volume of the expansion medium is increased, and the lining core is pushed to enlarge the distance between the first connecting end and the second connecting end to tighten the clamp body.
Preferably, the clamp body is an integrally formed clamp band.
According to the preferable scheme, the clamp with the self-adjusting temperature compensation further comprises a fastening piece, the fastening piece comprises an adjusting rod, an inner cavity is formed in the adjusting rod along the axial direction of the adjusting rod, external threads are arranged on the outer wall of the adjusting rod, an outer cylinder of the expansion pipe is fixed in the inner cavity, a first connecting end of the clamp body is connected with an extending end of the lining core, and a second connecting end of the clamp body is in threaded connection with the adjusting rod.
Preferably, the fastener further comprises an ear plate and a gasket, the first connecting end of the hoop body is connected with the extending end of the lining core through the gasket, and the second connecting end of the hoop body is in threaded connection with the adjusting rod through the ear plate; the extension end of the lining core comprises an extension rod which extends outwards from the middle of the end face of the extension end of the lining core along the axial direction of the lining core, an annular retaining shoulder is formed on the end face of the extension end of the lining core, a through hole for the extension rod to extend out is formed in the middle of the gasket, the extension rod sequentially penetrates through the gasket and a first connecting end of the hoop body, the inner side face of the gasket abuts against the annular retaining shoulder of the lining core, and the outer side face of the gasket abuts against the first connecting end; the clamp is characterized in that an inner threaded hole is formed in the lug plate, the lug plate is in threaded connection with the adjusting rod through the inner threaded hole, and the lug plate is fixedly connected with the second connecting end of the clamp body.
According to a preferable scheme, the clamp body is a double-steel-wire clamping ring, a first connecting end of the double-steel-wire clamping ring is an arc-shaped sleeve ring, a second connecting end of the double-steel-wire clamping ring is two hook-shaped steel wire heads, and the arc-shaped sleeve ring of the double-steel-wire clamping ring is sleeved on an extension rod of the lining core; the lug plate is provided with two through holes, and the hook-shaped steel wire heads of the double-steel-wire snap ring are respectively hooked on the through holes.
As preferred scheme, the clamp body includes left clamp and right clamp and connects the connecting piece of left clamp and right clamp, the connecting piece is bolt or worm driving medium.
Preferably, the tube body is a rubber hose for an automobile, and the swelling medium is selected from water, a sodium chloride solution or a mixed solution of water and ethylene glycol.
Preferably, the concentration of the sodium chloride solution is 14-21%, and the ethylene glycol in the mixed solution of water and ethylene glycol accounts for 0-26.4% of the total volume of the mixed solution.
Preferably, the outer surface of the lining core in sliding contact with the inner wall of the outer barrel is vulcanized with sealing rubber, and the lining core is in interference fit with the first cavity through the sealing rubber.
Preferably, the expansion tube further comprises a rubber bag, and the expansion medium 25 is sealed in the rubber bag.
Compared with the prior elastic clamp, the invention has the following advantages:
(1) according to the self-adjusting temperature compensation clamp, the expansion pipe is additionally arranged, the inner diameter of the clamp body in a low-temperature state is adjusted, the holding force is further increased, and the clamp can be automatically adjusted along with the change of temperature without human intervention.
(2) The expansion pipe adopts the design of the outer cylinder and the lining core, the expansion medium is arranged in the outer cylinder, the expansion medium exerts thrust on the lining core by utilizing the volume increase of the expansion medium in a low-temperature state so as to provide compensation holding force, when the external temperature is recovered to the normal temperature, the lining core is retracted to the original state, the rubber hose is only subjected to the holding force of the hoop body, the phenomenon that the rubber hose is subjected to the external compensation holding force for a long time to increase the stress relaxation of a rubber material is avoided, and the product life of the rubber hose is shortened.
Drawings
FIG. 1 is a schematic view showing a self-regulating temperature-compensated clamp according to example 1;
FIG. 2 is a schematic view showing the construction of a self-regulating temperature-compensated clamp according to embodiment 2;
FIG. 3 is a schematic view of the self-regulating temperature compensated clamp of example 3;
FIG. 4 shows the sealing performance test results of the rubber hose under the cold and hot circulation;
the components in the figures are numbered as follows: the clamp comprises a clamp body 10, a left clamp 11, a right clamp 12, a connecting piece 13, a first connecting end 14, a second connecting end 15, a double-wire snap ring 16, an arc-shaped lantern ring 16.1, a hook-shaped wire head 16.2, an elastic clamping band 17, an expansion pipe 20, an outer cylinder 21, a lining core 22, an extension rod 28, an annular blocking shoulder 29, a first cavity 23, a second cavity 24, an expansion medium 25, sealing rubber 26, a rubber bag 27, a fastener 30, an adjusting rod 31, external threads 32, an ear plate 34, a gasket 35 and a through hole 36.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, which is illustrated in the accompanying drawings.
Example 1
Referring to fig. 1, a clamp with self-adjusting temperature compensation includes an elastic clamping band 17 and an expansion tube 20, which are integrally formed, where the elastic clamping band 17 has a first connection end 14 and a second connection end 15, the expansion tube 20 includes an outer tube 21 and a lining core 22, one end of the outer tube 21 is closed, and the other end is open, the outer tube 21 has a first cavity 23 and a second cavity 24 extending from an open end to a closed end along an axial direction of the outer tube 21, the first cavity 23 is communicated with the second cavity 24, an extended end of the lining core 22 extends into the first cavity 23 through the open end of the outer tube 21, the lining core 22 is slidably connected with an inner wall of the outer tube 21, an extended end of the lining core 22 abuts against the first connection end 14 of the elastic clamping band 17, and the second cavity 23 is completely filled with an expansion medium 25, in this embodiment, the expansion medium 25 is liquid water, and through a test, an expansion amount of the liquid water reaches 9 to 11% after being solidified at 0 ℃; the liquid water is sealed in the rubber bag 27 to prevent the liquid water from leaking, the rubber bag 27 is fixed in the second cavity 23, one end of the rubber bag 27 is attached to the end face of the extending end of the lining core 22, and the end face of the closed end of the outer cylinder 21 abuts against the second connecting end 15 of the elastic clamping band 17.
The clamp with the self-adjusting temperature compensation is suitable for a rubber hose with a leakage phenomenon caused by the fact that stress relaxation occurs at about 0 ℃, the expansion pipe 20 is taken down firstly, the elastic clamping band 17 is pressed by external force to enable the elastic clamping band 17 to be sleeved on the rubber hose, the elastic clamping band 17 is released to hold the rubber hose tightly, and then the expansion pipe 20 is clamped between the first connecting end 14 and the second connecting end 15 of the elastic clamping band 17. When the outside temperature is higher than 0 ℃, the liquid water in the expansion pipe 20 does not change in shape, and the rubber hose is tightly held by the holding force of the elastic clamping band 17; when the external temperature is below 0 ℃, the elasticity of the rubber hose is attenuated, the hardness is increased, the sealing efficiency is reduced, the rubber hose is easy to leak in the state, at the moment, liquid water in the expansion pipe 20 is solidified, the volume is increased, the lining core 22 is pushed to slide outwards to enlarge the distance between the first connecting end 14 and the second connecting end 15, the inner diameter of the elastic clamping belt 17 is reduced to further tightly hold the rubber hose, the problem that the rubber hose leaks at low temperature is solved, and at the moment, the rubber hose is simultaneously subjected to the compensation clamping force of the expansion pipe 20 and the clamping force of the elastic clamping belt 17.
When the outside temperature is recovered to be higher than 0 ℃, the elasticity of the rubber hose is recovered, ice blocks in the expansion pipe 20 are melted, the volume of an expansion medium 25 in the expansion pipe 20 is reduced, the lining core 22 is retracted to be in the original state, the rubber hose is only subjected to the holding force of the elastic clamping band 17, the problem that the rubber hose is subjected to the outside compensation holding force for a long time to increase the stress relaxation of a rubber material is avoided, and the product life of the rubber hose is shortened.
The expansion force of 1g of water when being frozen is about 960Kg/cm2As shown in FIG. 4, the force value of a rubber hose (phi 40mm) in the cold-hot cycle test when the sample leaks is 189N, that is, the diameter of the lining core is larger than 2mm under the ideal condition2The holding force larger than 189N can be generated, and the low-temperature adjusting function can be achieved.
It is known from literature that the freezing point of water is related to pressure, and the freezing point is reduced by increasing the pressure below 207.3MPa and is at the lowest-22 ℃, and the freezing point is increased by exceeding the pressure of 207.3MPa and is at 51.6 ℃ when the pressure is 2195 MPa. The low-temperature leakage of the rubber hose usually occurs below-20 ℃, that is, the change of the freezing point has little influence on the clamp. The relationship between the pressure and the boiling point of water is shown in the following table 1, the service temperature of the rubber hose around the engine is generally 220-230 ℃, that is, the water can be ensured not to boil only by applying the pressure of about 3MPa to the water in the medium cavity.
Table 1: relationship between pressure and boiling point of water
Example 2
Combine shown in fig. 2, a self-interacting temperature compensation's clamp, including clamp body 10, expansion pipe 20, clamp body 10 includes two semicircular clamps and connecting piece 13, two semicircular clamps are left clamp 11 and right clamp 12 respectively, the lower extreme of left clamp 11 and the lower extreme of right clamp 12 pass through connecting piece 13 and connect, connecting piece 13 is the bolt in this embodiment, the upper end of left clamp 11 is second link 15, the upper end of right clamp is first link 14, the upper end of left clamp 11 and the upper end cross arrangement of right clamp 12, set up counter-force structure, when being close to mutually in both ends promptly, clamp body 10 internal diameter increases, when both ends are kept away from mutually, clamp body 10 internal diameter reduces.
The expansion pipe 20 is arranged between the first connecting end 14 and the second connecting end 15, the expansion pipe 20 comprises an outer cylinder 21 and a lining core 22, one end of the outer cylinder 21 is closed, the other end of the outer cylinder 21 is open, a first cavity 23 and a second cavity 24 which extend from the open end to the closed end along the axial direction of the outer cylinder 21 are arranged in the outer cylinder 21, the first cavity 23 is communicated with the second cavity 24, the extending end of the lining core 22 extends into the first cavity 23 through the open end of the outer cylinder 21, the lining core 22 is in sliding connection with the inner wall of the outer cylinder 21, an expansion medium 25 is completely filled in the second cavity 24, the expansion medium 25 is a 21% sodium chloride solution, the freezing point of the 21% sodium chloride solution is-18 ℃ through tests, and the expansion amount is 4-6%; the 21% sodium chloride solution is sealed in the rubber bag 27 to prevent the liquid sodium chloride solution from leaking, the rubber bag 27 is fixed in the second cavity 24, and one end of the rubber bag 27 is attached to the end face of the extending end of the lining core 22; the protruding end of the core 22 abuts against the first connection end 14 of the right yoke 12, and the end face of the closed end of the outer cylinder 21 abuts against the second connection end 15 of the left yoke 11.
The clamp with the function of self-adjusting temperature compensation is suitable for a rubber hose which has a leakage phenomenon due to the fact that stress relaxation occurs at the temperature of about-18 ℃, the connecting piece 13 is unscrewed, the left clamp 11 and the right clamp 12 are sleeved on the rubber hose, then the connecting piece 13 is screwed, the size of the inner diameter of the left clamp and the inner diameter of the right clamp are reduced through the connecting piece 13, and the left clamp 11 and the right clamp 12 are locked to hold the rubber hose tightly; when the external temperature is below-18 ℃, the elasticity of the rubber hose is attenuated, the hardness is increased, the sealing efficiency is reduced, the rubber hose is easy to leak in the state, at the moment, the sodium chloride solution in the expansion pipe is solidified, the volume is increased, the lining core 22 is pushed to slide outwards, the distance between the first connecting end 14 and the second connecting end 15 is further enlarged, the inner diameters of the left clamp 11 and the right clamp 12 are reduced, the rubber hose is further held tightly, and the problem that the rubber hose leaks at the low temperature is solved.
Example 3
Referring to fig. 3, a clamp with self-adjusting temperature compensation comprises an integrally formed double-wire clasp 16, an expansion tube 20 and a locking member 30, wherein the double-wire clasp 16 is formed by bending a steel wire from the middle part to form a double-row steel wire, one end of the double-wire clasp 16 comprises two hook-shaped steel wire heads 16.2, the other end of the double-wire clasp comprises an arc-shaped sleeve ring 16.1, the expansion tube 20 comprises an outer tube 21 and a lining core 22, one end of the outer tube 21 is closed, the other end of the outer tube 21 is open, a first cavity 23 and a second cavity 24 which extend from the open end to the closed end along the axial direction of the outer tube are formed in the outer tube 21, the first cavity 23 is communicated with the second cavity 24, the extending end of the lining core 22 extends into the first cavity 23 through the open end of the outer tube 21, the lining core 22 is slidably connected with the inner wall of the outer tube 21, a sealing rubber 26 is vulcanized on the outer surface of the lining core 22 which is in sliding contact with the inner wall of the outer tube 21, the lining core 22 is in interference fit with the first cavity 23 through the sealing rubber 26, the second cavity 24 is completely filled with an expansion medium 25, the expansion medium 25 is a 26.4% glycol aqueous solution (a mixed solution of glycol and water, the volume white percentage of glycol is 26.4%), and the test shows that the freezing point of the 26.4% glycol aqueous solution is-10 ℃ and the expansion amount is 3-4%; since the double-wire snap ring 16 is integrally formed in this embodiment, and only two free ends thereof are the first connection end 14 and the second connection end 15, the difference between this embodiment and embodiment 2 is that the expansion pipe 20 is disposed in the fastening member 30 in this embodiment, so as to realize integration of the expansion pipe 20 and the fastening member 30, and the fastening member 30 includes the adjustment rod 31, the ear plate 34, and the gasket 35; an inner cavity along the axial direction of the adjusting rod 31 is formed in the adjusting rod 31, external threads are arranged on the outer wall of the adjusting rod 31, the outer cylinder 21 of the expansion pipe 20 is fixed in the inner cavity, the extending end of the lining core 22 comprises an extending rod 28 extending outwards from the middle of the end face of the extending end of the lining core 22 along the axial direction of the lining core 22, an annular retaining shoulder 29 is formed on the end face of the extending end of the lining core 22, a through hole 36 for extending the extending rod 28 is formed in the middle of a gasket 35, the gasket 35 is sleeved on the extending rod 28, the first connecting end 14 of the hoop body 10 penetrates through the extending rod 28 and abuts against the outer side of the gasket 35, and the inner side face of the gasket 35 abuts against the annular retaining shoulder 29 of the lining core 22; the ear plate 34 is provided with an internal thread hole, the ear plate 34 is in threaded connection with the adjusting rod 31 through the internal thread hole, and the ear plate 34 is fixedly connected with the second connecting end 15 of the clamp body 10.
The clamp with the function of self-regulating temperature compensation is suitable for a rubber hose with a leakage phenomenon caused by stress relaxation at about-10 ℃, when the clamp with the function of self-regulating temperature compensation is used, the lug plate 34 is fixed, the adjusting rod 31 is rotated to reduce the distance between the lug plate 34 and the gasket 35, the distance between the first connecting end 14 and the second connecting end 15 which are respectively connected with the lug plate 34 and the gasket 35 is increased, the inner diameter of the double-steel-wire clamp ring 16 is increased and sleeved on the rubber hose, the adjusting rod 31 is screwed down to enable the double-steel-wire clamp ring 16 to tightly hold the rubber hose, when the external temperature is below-10 ℃, the elasticity of the rubber hose is attenuated, the hardness is increased, the sealing efficiency is reduced, the rubber hose is easy to leak in such a state, at the moment, the ethylene glycol aqueous solution in the expansion pipe 20 is solidified, the volume is increased, the lining core 22 is pushed to slide outwards to further enlarge the distance between the first connecting end 14 and the second connecting end 15, the inner diameter of the double-steel-wire clamp ring 16 is reduced to further hold the rubber hose tightly, so that the problem that the rubber hose leaks at low temperature is solved.
The above examples 1 to 3 only list three swelling media, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements may be made, such as designing the expansion medium according to the stress relaxation temperature of the rubber hose, adjusting the solubility of each substance in the expansion medium to realize the phase change at the stress relaxation temperature of the rubber hose, and generating the expansion amount, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A clamp with self-adjusting temperature compensation comprises a clamp body (10) used for holding a pipe body tightly, wherein the clamp body (10) is provided with a first connecting end (14) and a second connecting end (15), the first connecting end (14) and the second connecting end (15) are arranged in a crossed mode, a space is formed between the first connecting end (14) and the second connecting end (15), and when the space between the first connecting end (14) and the second connecting end (15) is reduced, the inner diameter of the clamp body (10) is increased; when the distance between the first connecting end (14) and the second connecting end (15) is increased, the inner diameter of the hoop body (10) is reduced; the expansion pipe (20) is characterized by further comprising an expansion pipe (20), the expansion pipe (20) comprises an outer cylinder (21) and a lining core (22), one end of the outer cylinder (21) is closed, the other end of the outer cylinder is open, a first cavity (23) and a second cavity (24) which extend from the open end to the closed end along the axial direction of the outer cylinder (21) are formed in the outer cylinder (21), the first cavity (23) is communicated with the second cavity (24), the extending end of the lining core (22) extends into the first cavity (23) through the open end of the outer cylinder (21), the lining core (22) is connected with the inner wall of the outer cylinder (21) in a sliding mode, the extending end of the lining core (22) is connected with a first connecting end (14) of the clamp body (10), the outer cylinder (21) is connected with a second connecting end (15), and an expansion medium (25) is completely filled in the second cavity (24);
when the pipe body is a rubber hose which has stress relaxation at 0 ℃ and has leakage phenomenon, water is selected as the expansion medium (25); when the outside temperature reaches 0 ℃, the volume of the expansion medium (25) is increased, and the lining core (22) is pushed to enlarge the distance between the first connecting end (14) and the second connecting end (15) to shrink the clamp body (10);
when the pipe body is a rubber hose which has stress relaxation at-18 ℃ and generates leakage phenomenon; the expansion medium (25) is 21% sodium chloride solution; when the outside temperature reaches minus 18 ℃, the volume of the expansion medium (25) is increased, and the lining core (22) is pushed to enlarge the distance between the first connecting end (14) and the second connecting end (15) to shrink the clamp body (10);
when the pipe body is a rubber hose which has stress relaxation at minus 10 ℃ and has leakage phenomenon; the expansion medium (25) is 26.4 percent of glycol aqueous solution; when the outside temperature reaches minus 10 ℃, the volume of the expansion medium (25) is increased, and the lining core (22) is pushed to enlarge the distance between the first connecting end (14) and the second connecting end (15) to shrink the clamp body (10).
2. The self-regulating temperature-compensated clamp of claim 1, wherein the clamp body (10) is an integrally formed clamp band.
3. The self-temperature-compensation clamp according to claim 2, further comprising a fastening member (30), wherein the fastening member (30) comprises an adjusting rod (31), an inner cavity is formed in the adjusting rod (31) along an axial direction of the adjusting rod, an outer wall of the adjusting rod (31) is provided with an external thread, an outer cylinder (21) of the expansion pipe (20) is fixed in the inner cavity, the first connecting end (14) of the clamp body (10) is connected with the extending end of the lining core (22), and the second connecting end (15) of the clamp body (10) is connected with the adjusting rod (31) in a threaded manner.
4. The self-regulating temperature-compensated clamp of claim 3, wherein the fastener (30) further comprises an ear plate (34) and a spacer (35), the first connection end (14) of the clamp body (10) being connected to the protruding end of the core (22) via the spacer (35), the second connection end (15) of the clamp body (10) being threadedly connected to the adjustment rod (31) via the ear plate (34); the extension end of the lining core (22) comprises an extension rod (28) which extends outwards from the middle of the end face of the extension end of the lining core (22) along the axial direction of the lining core (22), an annular retaining shoulder (29) is formed on the end face of the extension end of the lining core (22), a through hole (36) for the extension rod (28) to penetrate out is formed in the middle of the gasket (35), the extension rod (28) sequentially penetrates through the gasket (35) and the first connecting end (14) of the clamp body (10), the inner side face of the gasket (35) abuts against the annular retaining shoulder (29) of the lining core (22), and the outer side face of the gasket (35) abuts against the first connecting end (14); the novel clamp is characterized in that an inner threaded hole is formed in the lug plate (34), the lug plate (34) is in threaded connection with the adjusting rod (31) through the inner threaded hole, and the lug plate (34) is fixedly connected with the second connecting end (15) of the clamp body (10).
5. The self-regulating temperature-compensated clamp according to claim 4, wherein the clamp body (10) is a double wire snap ring (16), the first connection end (14) of the double wire snap ring (16) is an arc-shaped collar (16.1), the second connection end (15) of the double wire snap ring (16) is two hook-shaped wire heads (16.2), and the arc-shaped collar (16.1) of the double wire snap ring (16) is sleeved on the extension bar (28) of the lining core (22); the ear plate (34) is provided with two through holes, and the hook-shaped steel wire heads (16.2) of the double-steel-wire snap ring (16) are respectively hooked on the through holes.
6. Self-regulating temperature-compensated clamp according to claim 1, characterized in that the clamp body (10) comprises a left clamp (11) and a right clamp (12) and a connecting piece (13) connecting the left clamp (11) and the right clamp (12), the connecting piece (13) being a bolt or worm drive.
7. Self-regulating temperature-compensated clamp according to one of claims 1 to 6, wherein the outer surface of the core (22) is vulcanized with a sealing rubber (26), the core (22) being interference-fitted with the first cavity (23) by means of the sealing rubber (26) in order to prevent leakage of the expansion medium (25).
8. The self-regulating temperature-compensated clamp according to any one of claims 1 to 6, wherein the expansion tube (20) further comprises a rubber bladder (27), the expansion medium (25) being sealed within the rubber bladder (27) to prevent leakage of the expansion medium (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011029947.7A CN112128492B (en) | 2020-09-27 | 2020-09-27 | Clamp with self-adjusting temperature compensation function |
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| CN112128492B true CN112128492B (en) | 2022-04-01 |
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| CN113991234B (en) * | 2021-10-25 | 2023-05-16 | 合肥国轩高科动力能源有限公司 | Soft package module capable of automatically adjusting expansion deformation |
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| DE19538819A1 (en) * | 1995-10-19 | 1997-04-30 | Rasmussen Gmbh | Hose clamp |
| DE102005059118B3 (en) * | 2005-12-10 | 2007-02-08 | Hydac Accessories Gmbh | Clamp with flexible holding band, e.g. for fixing gas cylinders, has compensation part between holding surface of holding part and holding band |
| CN101909780A (en) * | 2007-11-02 | 2010-12-08 | Band-It-Idex股份有限公司 | Dual locking band clamp and method of forming the same |
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| CN102853170A (en) * | 2011-06-29 | 2013-01-02 | (株）东亚金属 | Hose clamp |
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|---|---|
| CN112128492A (en) | 2020-12-25 |
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