CN209212571U - A kind of high-temperature-hot-water centrifugal pump - Google Patents
A kind of high-temperature-hot-water centrifugal pump Download PDFInfo
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- CN209212571U CN209212571U CN201821730791.3U CN201821730791U CN209212571U CN 209212571 U CN209212571 U CN 209212571U CN 201821730791 U CN201821730791 U CN 201821730791U CN 209212571 U CN209212571 U CN 209212571U
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Abstract
The utility model provides a kind of high-temperature-hot-water centrifugal pump, it includes pump shaft, the first end of pump shaft connects motor, rigid connector is set on pump shaft, impeller is connected on pump shaft on the second end of opposite first end, impeller outer is equipped with the pump housing, is further sleeved with seal member on pump shaft, seal member connects the top of impeller, and multiple exhaust valve parts are provided between the pump housing and seal member.The utility model eliminates the phenomenon that steam escapes under vapour-liquid admixture compared to the prior art, promotes vapor-liquid separation, reduces the ratio of gas in medium, reduce the generation of cavitation, unit is enable to operate normally.
Description
Technical field
The utility model relates to a kind of centrifugal pumps, in particular to a kind of high-temperature-hot-water centrifugal pump.
Background technique
It is generally easily vaporized with conventional centrifugal pump conveying high temperature at this stage, especially the higher situation of pump inlet negative pressure, portion
Dividing user scene to have medicine, chemical industry import negative pressure is 0.095MPa, and high-temperature medium easily vaporizes during pumping,
Cavitation is generated to pump, moreover the temperature of medium can be increased further in unit running process, generates cavitation.
So-called cavitation phenomenons be exactly liquid at a certain temperature, due to the dynamic action of liquid make pump entrance pressure
Power is lower than the pressure for vaporization (saturated vapour pressure) of liquid at such a temperature, and liquid begins vaporization and generate bubble, and with liquid stream into
When entering higher-pressure region, bubbles burst, surrounding liquid fills rapidly Primordial Qi bubble hole, generates local high speed and high pressure hitting power, this gas
The Emergence and Development and fracture phenomena of bubble are exactly cavitation phenomenons.Normally due to pump assembly caused by cavitation generate noise and vibration,
Flow passage components damage, the performance decline of pump.
Simultaneously because the conduction of pump excessively stream part heat, leads to locking occur at the support zone bearing of pump, leads to pump machine
The shutdown of group.With medicine, the rise of chemical industry, the demand to such operating condition increases within this several years, how to crack problems
The problem of being current pump industry urgent need to resolve.
Utility model content
In consideration of it, the utility model provides a kind of high-temperature-hot-water centrifugal pump, steam under vapour-liquid admixture is eliminated
The phenomenon that evolution, promotes vapor-liquid separation, reduces the ratio of gas in medium, reduce the generation of cavitation, enable unit just
Often operation.
For this purpose, the utility model provides a kind of high-temperature-hot-water centrifugal pump comprising pump shaft, the first end connection of pump shaft
Motor is set with rigid connector on pump shaft, is connected with impeller, impeller outer peace on pump shaft on the second end of opposite first end
Equipped with the pump housing, seal member is further sleeved on pump shaft, seal member connects the top of impeller, is arranged between the pump housing and seal member
There are multiple exhaust valve parts.
Further, above-mentioned exhaust valve part includes the exhaust valve being set on the pump housing, and exhaust valve is connected close by valve pipe
Seal component.
Further, above-mentioned exhaust valve is ball valve.
Further, above-mentioned seal member includes machine sealed cover and sealing ring, and machine sealed cover is placed on pump shaft, and sealing ring connects
Pick sealed cover and impeller.
Further, it is provided with attachment base between the above-mentioned pump housing and motor, be placed on outside pump shaft.
A kind of high-temperature-hot-water centrifugal pump provided by the utility model, it is identical that this vertical centrifugal pump passes in and out bore, and is in
Same position height, can be directly mounted on pipeline, and pump cover is separately handled with connection frame, while equal in pump housing inlet and outlet flange
There is flushing pipeline to be controlled with exhaust valve part, outlet high-pressure fluid enters machine sealing position by flushing pipe, cooler envelope is rinsed, then
Pump inlet low-pressure area is returned to from pump cover highest position adapter tube, exhaust valve is installed at pump cover, eliminates vapour-liquid mixing well
Under state, steam is escaped, promote vapor-liquid separation, reduce the ratio of gas in medium, reduced the generation of cavitation, make unit
It operates normally.
Meanwhile it also having the advantage that compared to the prior art
Pump shaft uses separate structure, is connected between motor shaft and pump shaft by positive coupling, having reached prevents heat from passing
It is directed at motor bearings part, avoids bearing heating locking well, the bearing portions of this pump is equivalent to the axis for having borrowed motor
It holds, therefore guarantees that the stability of motor part is quite important to pump stability；
It is connected by positive coupling, and unconventional is motor extension shaft, can effectively completely cut off the conduction of heat, is protected
The temperature rise of motor upper bearing (metal), while stability when positive coupling under the effect of gravity more can effectively guarantee pump shaft rotation
And concentricity, pump shaft design are directed to intensity, the rigidity of axis, are calculated and verified using computer, and to the service life of axis
It is checked.Its intensity, rigidity (safety coefficient big, the first critical speed high), it is ensured that pump it is safe and reliable, the service life is long, and
For the big problem of certain model axial force, add back blade and setting balance hole by improving blade design, from waterpower angle
Axial force is eliminated, to solve the problems, such as the service life of bearing；
Axle envelope use mechanical seal, solve the problems, such as conventional centrifugal pump packing seal brought by serious leakage, seal it is quiet/
Rotating ring is made using silicon carbide, and sealing ring uses polytetrafluoroethylene (PTFE) material resistant to high temperature, while having high pressure Jie from pump discharge side
Matter washer blocks face, extends the service life of machine envelope.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as practical to this
Novel limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is a kind of structural schematic diagram of high-temperature-hot-water centrifugal pump provided by the embodiment of the utility model.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
Embodiment one:
Referring to Fig. 1, a kind of high-temperature-hot-water centrifugal pump of the offer of the utility model embodiment one is shown in figure comprising pump
Axis 1, the first end of pump shaft 1 connect motor 11, are set with rigid connector 12 on pump shaft 1, are specially the connector sleeve of irony,
Impeller 13 is connected on pump shaft 1 on the second end of opposite first end, the pump housing 14 is installed outside impeller 13, is also covered on pump shaft 1
Equipped with seal member 15, seal member 15 connects the top of impeller 13, multiple rows is provided between the pump housing 14 and seal member 15
Air valve component 16, exhaust valve part 16 can specifically include the exhaust valve 161 being set on the pump housing 14, and exhaust valve 161 passes through valve
Pipe 162 connects seal member 15, and exhaust valve 161 is specifically as follows ball valve.
A kind of high-temperature-hot-water centrifugal pump provided by the present embodiment, it is identical that this vertical centrifugal pump passes in and out bore, and in same
One position height, can be directly mounted on pipeline, and pump cover is separately handled with connection frame, while have in pump housing inlet and outlet flange
Flushing pipeline is controlled with exhaust valve part, and outlet high-pressure fluid enters machine sealing position by flushing pipe, is rinsed cooler and is sealed, then from
Pump cover highest position adapter tube returns to pump inlet low-pressure area, and exhaust valve is installed at pump cover, eliminates vapour-liquid mixing shape well
Under state, steam is escaped, promote vapor-liquid separation, reduce the ratio of gas in medium, reduce the generation of cavitation, makes unit just
Often operation.
Meanwhile it also having the advantage that compared to the prior art
Pump shaft uses separate structure, is connected between motor shaft and pump shaft by positive coupling, having reached prevents heat from passing
It is directed at motor bearings part, avoids bearing heating locking well, the bearing portions of this pump is equivalent to the axis for having borrowed motor
It holds, therefore guarantees that the stability of motor part is quite important to pump stability；
It is connected by positive coupling, and unconventional is motor extension shaft, can effectively completely cut off the conduction of heat, is protected
The temperature rise of motor upper bearing (metal), while stability when positive coupling under the effect of gravity more can effectively guarantee pump shaft rotation
And concentricity, pump shaft design are directed to intensity, the rigidity of axis, are calculated and verified using computer, and to the service life of axis
It is checked.Its intensity, rigidity (safety coefficient big, the first critical speed high), it is ensured that pump it is safe and reliable, the service life is long, and
For the big problem of certain model axial force, add back blade and setting balance hole by improving blade design, from waterpower angle
Axial force is eliminated, to solve the problems, such as the service life of bearing；
Axle envelope use mechanical seal, solve the problems, such as conventional centrifugal pump packing seal brought by serious leakage, seal it is quiet/
Rotating ring is made using silicon carbide, and sealing ring uses polytetrafluoroethylene (PTFE) material resistant to high temperature, while having high pressure Jie from pump discharge side
Matter washer blocks face, extends the service life of machine envelope.
Wherein, choma and balance hole can be set before and after impeller, for balancing extra axial force, while reduces leakage
Loss improves the hydraulic efficiency of pump, and mechanical seal is using the PLAN11 flushing scheme for meeting AP1610 standard, to machine Feng Jinhang
Cooling, flushing, lubrication maintain the operation of machine envelope reliably and with long-term.The side that shell base angle can be fixed using grooved bore and basis
Formula reduces process time, easy for installation with traditional round hole, and there are air vent and pressure ports on pump cover, can ensure that pump
Normal use and maintenance.
Embodiment two:
Referring to Fig. 1, a kind of high-temperature-hot-water centrifugal pump of the offer of the utility model embodiment two, the present embodiment are shown in figure
Also further be made that on the basis of the above embodiments it is following as an improved technical scheme: seal member 15 include machine envelope
Gland 151 and sealing ring 152, machine sealed cover 151 are placed on pump shaft 1, and sealing ring 152 connects machine sealed cover 151 and impeller 13, can
To further improve sealing performance.
Embodiment three:
Referring to Fig. 1, a kind of high-temperature-hot-water centrifugal pump of the offer of the utility model embodiment three, the present embodiment are shown in figure
Also further be made that on the basis of the above embodiments it is following as an improved technical scheme: between the pump housing 14 and motor 11
It is provided with attachment base 17, is placed on outside pump shaft 1, the stability of installation can be improved.
Obviously, it is practical without departing from this can to carry out various modification and variations to the utility model by those skilled in the art
Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.
Claims (5)
1. a kind of high-temperature-hot-water centrifugal pump, which is characterized in that including pump shaft (1), the first end of the pump shaft (1) connects motor
(11), it is set with rigid connector (12) on the pump shaft (1), the second end of the relatively described first end on the pump shaft (1)
It is connected in portion impeller (13), is equipped with the pump housing (14) outside the impeller (13), is further sleeved with seal member on the pump shaft (1)
(15), the seal member (15) connects the top of the impeller (13), the pump housing (14) and the seal member (15) it
Between be provided with multiple exhaust valve parts (16).
2. a kind of high-temperature-hot-water centrifugal pump according to claim 1, which is characterized in that the exhaust valve part (16) includes
The exhaust valve (161) being set on the pump housing (14), the exhaust valve (161) connect the sealing by valve pipe (162)
Part (15).
3. a kind of high-temperature-hot-water centrifugal pump according to claim 2, which is characterized in that the exhaust valve (161) is ball valve.
4. a kind of high-temperature-hot-water centrifugal pump according to claim 1, which is characterized in that the seal member (15) includes machine
Sealed cover (151) and sealing ring (152), the machine sealed cover (151) are placed on the pump shaft (1), and the sealing ring (152) is even
Connect the machine sealed cover (151) and the impeller (13).
5. a kind of high-temperature-hot-water centrifugal pump according to claim 1, which is characterized in that the pump housing (14) and the motor
(11) it is provided with attachment base (17) between, is placed on the pump shaft (1) outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821730791.3U CN209212571U (en) | 2018-10-24 | 2018-10-24 | A kind of high-temperature-hot-water centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821730791.3U CN209212571U (en) | 2018-10-24 | 2018-10-24 | A kind of high-temperature-hot-water centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209212571U true CN209212571U (en) | 2019-08-06 |
Family
ID=67456833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821730791.3U Active CN209212571U (en) | 2018-10-24 | 2018-10-24 | A kind of high-temperature-hot-water centrifugal pump |
Country Status (1)
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|---|---|
| CN (1) | CN209212571U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586467A (en) * | 2021-09-03 | 2021-11-02 | 宁波巨化化工科技有限公司 | High-efficient magnetic drive pump that anti cavitation ability is strong |
| CN114838010A (en) * | 2022-05-27 | 2022-08-02 | 浙江登丰泵业有限公司 | Cavitation-resistant high-temperature high-pressure pump |
-
2018
- 2018-10-24 CN CN201821730791.3U patent/CN209212571U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586467A (en) * | 2021-09-03 | 2021-11-02 | 宁波巨化化工科技有限公司 | High-efficient magnetic drive pump that anti cavitation ability is strong |
| CN114838010A (en) * | 2022-05-27 | 2022-08-02 | 浙江登丰泵业有限公司 | Cavitation-resistant high-temperature high-pressure pump |
| CN114838010B (en) * | 2022-05-27 | 2023-02-07 | 浙江登丰泵业有限公司 | Cavitation-resistant high-temperature high-pressure pump |
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