CN113125144A - Self-closing valve test system and test device - Google Patents
Self-closing valve test system and test device Download PDFInfo
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- CN113125144A CN113125144A CN202110375064.XA CN202110375064A CN113125144A CN 113125144 A CN113125144 A CN 113125144A CN 202110375064 A CN202110375064 A CN 202110375064A CN 113125144 A CN113125144 A CN 113125144A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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Abstract
The invention belongs to the field of valve testing equipment, and particularly relates to a self-closing valve testing system and device. One of the self-closing valve test systems is: the device comprises a pressure reducing system, a flowmeter, a pressure gauge, an overcurrent closing execution module, a bubble leakage detecting mechanism, a first electromagnetic valve, a positioning clamp, an air inlet angle seat valve, an air outlet angle seat valve and an air source; the air source, the pressure reducing system, the air inlet angle seat valve, the positioning fixture, the air outlet angle seat valve and the overflowing closing execution module form a first air path; the air source decompression system, the air inlet angle seat valve, the positioning fixture, the air outlet angle seat valve and the bubble leakage detection mechanism form an air path II; a first electromagnetic valve is arranged between the bubble leakage detecting mechanism and the air outlet angle seat valve; the flowmeter is used for testing flow; the pressure gauge is used for testing pressure. The self-closing valve testing system provided by the invention can realize the simultaneous testing of the air tightness of the flow of the self-closing valve.
Description
Technical Field
The invention belongs to the field of valve testing equipment, and particularly relates to a self-closing valve testing system and device.
Background
The self-closing valve is installed on the pipeline of the low-pressure gas system, and when the gas supply pressure of the pipeline is under-pressure or over-pressure, the device can be automatically closed and needs to be manually opened without electricity or other external power. The self-closing valve arranged at the joint of the tail end of the pipeline and the rubber pipe behind the gas meter has the pressure-loss closing function. The flow and gas tightness tests are carried out after the production of the self-closing valve is completed.
The existing self-closing valve testing device can not test the flow and the air tightness at the same time, so that the flow and the air tightness of the self-closing valve need to be separately measured when being tested, namely, the air tightness is tested by replacing the air tightness testing device after the flow is tested on the flow testing device; therefore, the self-closing valve testing device is provided based on the defect that the existing self-closing valve testing device cannot simultaneously test the flow and the air tightness.
Disclosure of Invention
In order to solve the technical blank of simultaneously testing the flow and the air tightness of the self-closing valve in the prior art, the invention provides a testing system and a testing device capable of simultaneously testing the flow and the air tightness of the self-closing valve.
The invention is realized by the following technical scheme:
the invention provides a self-closing valve test system on one hand, which is characterized in that: the device comprises a pressure reducing system, a flowmeter, a pressure gauge, an overcurrent closing execution module, a bubble leakage detecting mechanism, a first electromagnetic valve, a positioning clamp, an air inlet angle seat valve, an air outlet angle seat valve and an air source;
the air source is connected with a pressure reducing system, the pressure reducing system is connected with an air inlet angle seat valve, the air inlet angle seat valve is connected with an air inlet of a positioning fixture, an air outlet of the positioning fixture is connected with an air outlet angle seat valve, and the air outlet angle seat valve is respectively connected with the bubble leakage detecting mechanism and the overcurrent closing execution module;
the air source, the pressure reducing system, the air inlet angle seat valve, the positioning fixture, the air outlet angle seat valve and the overflowing closing execution module form a first air path; the air source decompression system, the air inlet angle seat valve, the positioning fixture, the air outlet angle seat valve and the bubble leakage detection mechanism form an air path II;
a first electromagnetic valve is arranged between the bubble leakage detecting mechanism and the air outlet angle seat valve;
the flowmeter is used for testing flow;
the pressure gauge is used for testing pressure.
Further, the flowmeter is connected in series at any position on a route formed by the decompression system, the air inlet angle seat valve and the positioning clamp.
The control system is connected with the start-stop button, and the control system controls the opening and closing of the first air path and the second air path.
Furthermore, a first electromagnetic valve is arranged between the bubble leakage detecting mechanism and the air outlet angle seat valve.
Further, the positioning fixture comprises an air inlet joint, an air cylinder and an air outlet joint, wherein the air cylinder is connected with the air inlet joint, and the air inlet joint and the air outlet joint are oppositely arranged; the air inlet joint is provided with an air inlet, and the air outlet joint is provided with an air outlet.
Further, the cylinder is connected with a second electromagnetic valve.
Further, it includes supporting seat, ball screw, slip table, telescopic outlet duct and motor to overflow to close the execution module, telescopic outlet duct sets up on the supporting seat, be provided with sliding guide on the supporting seat, the last slip table of connecting of sliding guide, telescopic outlet duct is connected on the upper portion of slip table, the sub-unit connection ball screw of slip table, ball screw's lead screw connection motor.
Further, telescopic outlet duct includes body one and body two, body one both ends opening, body one set up in body two, and the external diameter of body one and the internal diameter looks adaptation of body two, two closed, the one end opening of body, set up body one in the open end of body two, the axial that prolongs body two is provided with the venthole and the line of giving vent to anger, the gas outlet is connected with the line of giving vent to anger, just the gas outlet is located the one end of keeping away from body one.
Further, the overcurrent execution closing module further comprises a limiting mechanism, and the limiting mechanism is used for limiting the limit position of the sliding table.
According to another aspect of the invention, a self-closing valve testing device is provided, which comprises the testing system as described above, and further comprises a machine body, wherein the testing system is arranged on the machine body.
By adopting the technical scheme, the invention has the following advantages:
1. the invention can simultaneously test the flow and the air tightness of the self-closing valve; the closing flow of the self-closing valve can be obtained through the test result, and whether the self-closing valve has leakage after being closed can be known according to the air tightness test result.
2. The invention can realize automatic detection by arranging the control system.
3. The overcurrent closing execution module is simple in structure and convenient to manufacture and install; and the control mode is simple, and the valve is convenient to use in the self-closing valve test.
4. The positioning clamp has a simple structure and is convenient to manufacture and install; and the connection of the self-closing valve is controlled by the cylinder, so that better air tightness can be ensured.
5. The flow test must ensure sufficient air supply, which means that the whole test route must ensure a certain pipe diameter and as few gas path bends as possible, otherwise, the pressure at the self-closing valve is lower under the same flow, the valve is closed under low pressure, and the measurement is inaccurate; the sealing surfaces of the air inlet angle seat valve and the air outlet angle seat valve are inclined, and simultaneously, the sealing pretightening force is large due to the adoption of air pressure driving, so that the pipe diameter is large (important for convection quantity testing) and the air tightness is good (important for air tightness testing).
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or in the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a first schematic structural diagram of a self-closing valve testing device according to the present invention;
FIG. 2 is a schematic structural diagram of a self-closing valve testing device according to the present invention;
FIG. 3 is a third schematic structural diagram of a self-closing valve testing device according to the present invention;
FIG. 4 is a schematic structural view of a positioning fixture according to the present invention;
FIG. 5 is a schematic structural view of a bubble leak detection mechanism of the present invention;
FIG. 6 is a schematic diagram of an over-current shutdown execution module according to the present invention;
FIG. 7 is an enlarged view of a portion of FIG. 6;
FIG. 8 is a gas path diagram of an embodiment;
FIG. 9 is a flow chart of the test logic of the present invention;
in the drawings: 10. a pressure reducing system, 11, a pressure reducer, 12, a gas tank, 13, a pressure regulating valve, 20, a flowmeter, 30, a pressure gauge, 40, an overcurrent closing execution module, 41, a support seat, 42, a ball screw, 43, a sliding table, 44, a telescopic gas outlet pipe, 4401, a first pipe body, 4402, a second pipe body, 44021, a gas outlet, 44022, a gas outlet line, 45, a motor, 46, a sliding guide rail, 47, a limiting mechanism, 471, a correlation type laser sensor, 472, a limiting baffle, 50, a bubble leakage detecting mechanism, 51, a bubble leakage detector, 5101, a gas inlet joint of the bubble leakage detector, 5102, a transparent cover, 5103, a gas outlet nozzle, 52, an optical fiber sensor, 60, a first electromagnetic valve, 70, a positioning clamp, 71, a gas inlet joint, 72, a cylinder, 73, a gas outlet joint, 74, a sealing ring, 75, a limiting plate, 80, a gas inlet angle seat valve, 90, a gas outlet angle seat valve, 120. the control system 130, the start-stop button 140, the cylinder pressure reducer 150, the machine body 160, the display frequency 170, the self-closing valve 180 and the air source.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1, fig. 2 and fig. 3, the present embodiment provides a self-closing valve 170 testing apparatus, which includes a machine body 150 and a self-closing valve 170 testing system provided in the present embodiment, where the self-closing valve 170 testing system is disposed on the machine body 150, and the self-closing valve 170 testing system includes a pressure reducing system 10, a flow meter 20, a pressure gauge 30, an over-flow closing execution module 40, a bubble leakage detection mechanism 50, a first electromagnetic valve 100, a positioning fixture 70, an inlet angle seat valve 80, an outlet angle seat valve 90 and a gas source 180;
the air source (180) is connected with a pressure reducing system 10, the pressure reducing system 10 is connected with an air inlet angle seat valve 80, the air inlet angle seat valve 80 is connected with an air inlet of a positioning fixture 70, an air outlet 44021 of the positioning fixture 70 is connected with an air outlet angle seat valve 90, and the air outlet angle seat valve 90 is respectively connected with the bubble leakage detecting mechanism 50 and the overcurrent closing execution module 40;
the air source 180, the pressure reducing system 10, the air inlet angle seat valve 80, the positioning fixture 70, the air outlet angle seat valve 90 and the overflowing closing execution module 40 form a first air path; the air source 180 decompression system 10, the air inlet angle seat valve 80, the positioning fixture 70, the air outlet angle seat valve 90 and the bubble leakage detection mechanism 50 form an air path II; the first line and the second line can jointly complete the test of one self-closing valve 170, so that a plurality of groups can be arranged on the combination of the first line and the second line for simultaneously testing a plurality of self-closing valves 170; 4 groups of the combination of the first line and the second line can meet the simultaneous test of 4 self-closing valves 170;
a first electromagnetic valve 100 is arranged between the bubble leakage detecting mechanism 50 and the gas outlet angle seat valve 90;
the flow meter 20 is used for testing flow; the flow meter 20 is arranged between the decompression system 10 and the inlet angle seat valve 80, obviously the flow meter 20 can also be arranged between the inlet angle seat valve 80 and the positioning fixture 70, namely the flow meter 20 is arranged in front of the positioning fixture 70 and is used for testing the flow in the line; flow meter 20 is positioned before positioning fixture 70 to test more accurately. Of course, the connection mode is only a preferable mode, and the flow meter 20 may be disposed between the positioning fixture 70 and the outlet angle seat valve 90, or the flow rate is disposed between the flow passing execution module and the outlet angle seat valve 90; the flow meter 20 can be arranged at any position on a line to realize flow test, and a preferable connection mode of the flow meter 20 is provided, namely, the flow meter 20 is arranged between the pressure reducing system 10 and the air inlet angle seat valve 80;
the pressure gauge 30 is used for testing pressure; the pressure of the pressure gauge 30 is the industry regulation of the testing device, and the pressure during testing needs to be controlled within a standard range; since the over-current shutdown execution module 40 and the bubble leakage detection mechanism 50 connected behind the positioning fixture 70 discharge gas, and the pressures in the front and rear lines of the positioning fixture 70 are different, the pressure gauge 30 is arranged in front of the positioning fixture 70 and needs to be positioned behind the decompression system 10; namely, the pressure gauge 30 is arranged between the decompression system 10 and the positioning fixture 70; one way of connecting the pressure gauge 30 is provided, i.e. the pressure gauge 30 is located between the flow meter 20 and the pressure relief system 10, although this is only an example.
The self-closing valve 170 test principle is as follows: arranging the self-closing valve 170 on the positioning clamp 70, so that the inlet of the self-closing valve 170 is communicated with the air inlet of the positioning clamp 70, and the outlet of the self-closing valve 170 is communicated with the air outlet 44021 of the positioning clamp 70; as shown in fig. 8, the gas source (180) provides gas, which sequentially passes through the pressure reduction system 10, the flow meter 20, the gas inlet angle seat valve 80, the gas inlet of the positioning fixture 70, the self-closing valve 170, the gas outlet angle seat valve 90, and the over-current closing execution module 40, and at this time, the first electromagnetic valve 100 is closed; the flow in the route of the decompression system 10, the flow meter 20, the air inlet angle seat valve 80, the air inlet of the positioning fixture 70, the self-closing valve 170, the air outlet angle seat valve 90 and the over-flow closing execution module 40 is continuously improved by controlling the air outlet flow of the over-flow closing execution module 40, and the flow meter 20 tests the flow in the whole process until the flow measured by the flow meter 20 is not increased any more, so that a maximum flow value is obtained, wherein the maximum flow value is the over-flow closing flow of the self-closing valve 170; after the self-closing valve 170 is closed due to overcurrent, the flowmeter 20 judges whether large leakage exists or not, if the large leakage does not exist, the gas outlet angle seat valve is closed, the first electromagnetic valve 100 is opened, and the bubble tester tests whether the self-closing valve 170 leaks or not, so that the purpose of testing the air tightness of the self-closing valve 170 is achieved.
Wherein the air source 180 may use an air pump or an air compressor.
In some embodiments, the pressure reducing system 10 includes a pressure reducer 11, a gas tank 12, and a pressure regulating valve 13, the pressure reducing valve, the gas tank 12, and the pressure regulating valve 13 are connected in sequence, and the gas pressure reducing valve is connected to an intake angle seat valve 80.
In some embodiments, a first solenoid valve 100 is disposed between the bubble leak detection mechanism 50 and the outlet angle seat valve 90 as shown in FIG. 5. When the flow rate of the over-flow closing of the self-closing valve 170 is tested, gas can not enter the bubble leakage detection mechanism 50 by closing the first electromagnetic valve 100; and when the air tightness test of the self-closing valve 170 is carried out, the first electromagnetic valve 100 is opened, so that the test result is more accurate, and the waste of gas can be avoided.
The bubble leak detection mechanism 50 comprises a bubble leak detector 51 and an optical fiber sensor 52; the bubble leak detector 51 is conventional and available for direct purchase, and the optical fiber sensor 52 is used to transmit the test result of the bubble leak detector 51. The bubble leak detector 51 comprises a bubble leak detector air inlet joint 5101, a transparent cover 5102 and an air outlet mouth 5103, wherein the air inlet joint 71 is communicated with the air outlet mouth 5103, the air outlet mouth 5103 is arranged in the transparent cover 5102, water is arranged in the transparent cover 5102, and an air port of the air outlet mouth 5103 is soaked in the water; the optical fiber sensor 52 is disposed outside the bubble leak detector 51.
In some embodiments, as shown in fig. 4, the positioning fixture 70 includes an air inlet joint 71, an air cylinder 72 and an air outlet joint 73, the air cylinder 72 is connected to the air inlet joint 71, and the air inlet joint 71 and the air outlet joint 73 are oppositely arranged; the air inlet connector 71 is provided with an air inlet, and the air outlet connector 73 is provided with an air outlet 44021. After the self-closing valve 170 is connected, the air inlet and outlet 44021 can communicate through the self-closing valve 170.
In some embodiments, a second solenoid 110 is coupled to the cylinder 72. The second solenoid valve 110 is provided to further facilitate the operation of the control cylinder 72.
Preferably, a cylinder reducer 140 is further connected to the cylinder 72.
Specifically, the air source 180 is connected with the cylinder pressure reducer 140, the cylinder pressure reducer 140 is connected with the second electromagnetic valve 110, and the second electromagnetic valve 110 is connected with the air cylinder 72. The movement of the cylinder 72 is controlled by a gas source 180.
In some embodiments, as shown in fig. 6, the overcurrent shutdown execution module 40 includes a support base 41, a ball screw 42, a sliding table 43, a telescopic air outlet pipe 44 and a motor 45, the telescopic air outlet pipe 44 is disposed on the support base 41, a sliding guide rail 46 is disposed on the support base 41, the sliding guide rail 46 is connected to the sliding table 43, the telescopic air outlet pipe 44 is connected to an upper portion of the sliding table 43, the ball screw 42 is connected to a lower portion of the sliding table 43, and the screw of the ball screw 42 is connected to the motor 45.
In some embodiments, telescopic outlet duct 44 includes two 4402 of a body 4401 and body, the opening in a first 4401 both ends of body, and a body 4401 sets up in two 4402 of body, and the external diameter of a body 4401 and the internal diameter looks adaptation of two 4402 of body, two 4402 one end of body are sealed, one end opening, set up a body 4401 in the open end of two 4402 of body, the axial that prolongs two 4402 of body is provided with venthole and air outlet line 44022, air outlet 44021 and air outlet line 44022 are connected, just air outlet 44021 is located the one end of keeping away from a body 4401.
In some embodiments, the over-current execution shutdown module further includes a limiting mechanism 47, and the limiting mechanism 47 is used for limiting the limit position of the sliding table 43. As shown in fig. 7, the limiting mechanism 47 includes two opposite laser sensors 471 and two limiting blocking pieces 472, the limiting blocking pieces 472 are disposed on the sliding table 43, the two opposite laser sensors 471 are disposed at two ends of the sliding guide rail 46, and the limiting blocking pieces 472 are matched with the opposite laser sensors 471 for limiting.
The operating principle of the over-current shutdown execution module 40 is as follows: the opening of the telescopic outlet pipe 44 and the gas outlet 44021 enable the telescopic outlet pipe 44 in the initial state to be communicated with the outside, at the moment, when the first gas path is ventilated, gas flows out of the gas tank 12 and flows through the inlet angle seat valve 80, the positioning fixture 70, the outlet angle seat valve 90 and the overcurrent closing execution module 40, is discharged through the gas outlet 44021, the telescopic outlet pipe 44 is controlled to be gradually extended, the gas flow in the first line is increased, and the gas is discharged through the gas outlet hole and the gas outlet line 44022 at the same time.
In some embodiments, the gas circuit further comprises a control system 120 and a start-stop button 130, the start-stop button 130 is connected to the control system 120, and the control system 120 controls the opening and closing of the first gas circuit and the second gas circuit. Fully automatic testing can be achieved by the control system 120. The start-stop button 130 drives the control system 120 to work, and the control system 120 controls the decompression system 10, the overcurrent closing execution module 40, the bubble leakage detection mechanism 50, the first electromagnetic valve 100, the positioning fixture 70, the inlet angle seat valve 80 and the outlet angle seat valve 90 to work. The flow meter 20 and the pressure gauge 30 transmit the measurement results to the control system 120, and the control system 120 performs control based on the measurement results of the flow meter 20 and the pressure gauge 30. In some embodiments, a display frequency 160 is further included, and the test result of the flow meter 20 and the test result of the bubble leak detection mechanism 50 can be displayed through the display frequency 160, so that whether the self-closing valve 170 is closed and the airtightness of the self-closing valve 170 can be judged according to the test results.
Referring to fig. 9, the test process is specifically described according to the logic flow of the test, wherein Q2 is a closing determination value, Q4 is an airtight leakage determination value, Q is a real-time flow rate value detected by the flowmeter 20, Q5 is an overcurrent upper limit set value, and Q6 is an overcurrent lower limit set value; Q2-5L/min, Q4-1L/min, Q5-22L/min, Q6-18L/min.
The air source 180 is started, the air cylinder 72 clamps the self-closing valve 170, the air inlet angle seat valve 80 is opened, the air outlet angle seat valve 90 is opened, the initial flow of the over-current closing execution module 40 is 10L/min, the driving motor 45 rotates forwards, the flow of the over-current closing execution module 40 is increased, the flow in the whole circuit I is gradually increased, the real-time flow value measured by the flowmeter 20 is increased, and if the real-time flow value Q is increased to be larger than Q5, the self-closing valve 170 is unqualified in the upper limit of over-current and is not closed in the over-current; or the over-current closing execution module 40 has increased to the maximum flow, and the real-time flow Q still being greater than Q2 also indicates that the self-closing valve 170 is unqualified in the over-current upper limit, and no over-current closing occurs;
however, if the real-time flow Q is increased and does not reach Q5 all the time, the real-time flow Q suddenly drops and Q < Q2 is met, the upper limit of the over-flow of the self-closing valve 170 is qualified, and the self-closing valve 170 is closed;
judging whether the upper limit of the overflow is qualified or not, comparing the maximum real-time flow Qmax with Q6, and if Qmax is greater than Q6, indicating that the lower limit of the overflow is qualified;
after the upper limit and the lower limit of the over-current are qualified, judging whether the self-closing valve 170 leaks, comparing the real-time flow Q obtained by sudden drop with Q4, wherein Q is less than Q4, and indicating that no large leakage exists;
then, further testing the air tightness, opening the first electromagnetic valve 100, closing the air outlet angle seat valve 90, reversely rotating the motor 45, and answering the initial state (namely the minimum flow state) by the overcurrent closing execution module 40; the optical fiber sensor 52 of the bubble leak detector 51 detects the number N of bubbles in a desired detector, and compares N with N, wherein N is an industry standard and is determined according to different conditions, and N is less than N, which indicates that the air tightness is qualified.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, as any variations, equivalents, or improvements made within the spirit and principles of the present invention are intended to be covered thereby.
Claims (10)
1. A self-closing valve test system is characterized in that: the device comprises a pressure reducing system (10), a flowmeter (20), a pressure gauge (30), an overcurrent closing execution module (40), a bubble leakage detecting mechanism (50), a first electromagnetic valve (100), a positioning clamp (70), an air inlet angle seat valve (80), an air outlet angle seat valve (90) and an air source (180);
the air source (180) is connected with a decompression system (10), the decompression system (10) is connected with an air inlet angle seat valve (80), the air inlet angle seat valve (80) is connected with an air inlet of a positioning clamp (70), an air outlet (44021) of the positioning clamp (70) is connected with an air outlet angle seat valve (90), and the air outlet angle seat valve (90) is respectively connected with a bubble leakage detection mechanism (50) and an overcurrent closing execution module (40);
the air source (180), the pressure reducing system (10), the air inlet angle seat valve (80), the positioning fixture (70), the air outlet angle seat valve (90) and the overcurrent closing execution module (40) form a first air path; the air source (180) decompression system (10), the air inlet angle seat valve (80), the positioning fixture (70), the air outlet angle seat valve (90) and the bubble leakage detection mechanism (50) form an air passage II;
a first electromagnetic valve (100) is arranged between the bubble leakage detecting mechanism (50) and the air outlet angle seat valve (90);
the flow meter (20) is used for testing flow;
the pressure gauge (30) is used for testing pressure.
2. A self-closing valve testing system as defined in claim 1 wherein: the flowmeter (20) is connected in series at any position on a route formed by the decompression system (10), the air inlet angle seat valve (80) and the positioning clamp (70).
3. A self-closing valve testing system as defined in claim 1 wherein: the gas circuit control system further comprises a control system (120) and a start-stop button (130), wherein the start-stop button (130) is connected with the control system (120), and the control system (120) controls the opening and closing of the first gas circuit and the second gas circuit.
4. A self-closing valve testing system as defined in claim 1 wherein: and a first electromagnetic valve (100) is arranged between the bubble leakage detecting mechanism (50) and the air outlet angle seat valve (90).
5. A self-closing valve testing system as defined in claim 1 wherein: the positioning clamp (70) comprises an air inlet joint (71), an air cylinder (72) and an air outlet joint (73), the air cylinder (72) is connected with the air inlet joint (71), and the air inlet joint (71) and the air outlet joint (73) are oppositely arranged; set up the air inlet on air inlet joint (71), set up gas outlet (44021) on air outlet joint (73).
6. A self-closing valve testing system as defined in claim 1 wherein: the cylinder (72) is connected with a second electromagnetic valve (110).
7. A self-closing valve testing system as defined in claim 1 wherein: overcurrent closing execution module (40) includes supporting seat (41), ball screw (42), slip table (43), telescopic outlet duct (44) and motor (45), telescopic outlet duct (44) set up on supporting seat (41), be provided with sliding guide (46) on supporting seat (41), connect slip table (43) on sliding guide (46), telescopic outlet duct (44) is connected on the upper portion of slip table (43), sub-unit connection ball screw (42) of slip table (43), motor (45) is connected to the lead screw of ball screw (42).
8. A self-closing valve testing system as defined in claim 7 wherein: the telescopic air outlet pipe (44) comprises a first pipe body (4401) and a second pipe body (4402), two ends of the first pipe body (4401) are opened, the first pipe body (4401) is arranged in the second pipe body (4402), and the outer diameter of the first pipe body (4401) is matched with the inner diameter of the second pipe body (4402); the two (4402) of body is connected with slip table (43), two (4402) one end of body is sealed, one end opening, set up body (4401) in the open end of body two (4402), the axial that prolongs two (4402) of body is provided with the venthole and gives vent to anger line (44022), gas outlet (44021) and give vent to anger line (44022) are connected, just gas outlet (44021) are located the one end of keeping away from body one (4401).
9. A self-closing valve testing system according to any of claims 7 to 8 wherein: the overcurrent execution closing module further comprises a limiting mechanism (47), and the limiting mechanism (47) is used for limiting the limit position of the sliding table (43).
10. A self-closing valve testing device comprising a testing system according to any of claims 1-9, characterized in that: the testing system further comprises a machine body (150), and the testing system is arranged on the machine body (150).
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| CN202110375064.XA CN113125144B (en) | 2021-04-07 | 2021-04-07 | Self-closing valve test system and test device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113984373A (en) * | 2021-11-02 | 2022-01-28 | 宁波忻杰燃气用具实业有限公司 | Self-closing valve mechanical durability test equipment and test method |
| CN114486234A (en) * | 2022-01-24 | 2022-05-13 | 广东佳骏科技有限公司 | Detection device applied to automatic detection of performance of pipeline gas self-closing valve |
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| CN113984373A (en) * | 2021-11-02 | 2022-01-28 | 宁波忻杰燃气用具实业有限公司 | Self-closing valve mechanical durability test equipment and test method |
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| CN116296358A (en) * | 2023-05-22 | 2023-06-23 | 四川弥韧科技有限公司 | Automatic detection equipment and detection method for self-closing valve |
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