CN202883393U - Centrifugal pump with overpressure protection device - Google Patents
Centrifugal pump with overpressure protection device Download PDFInfo
- Publication number
- CN202883393U CN202883393U CN 201220527172 CN201220527172U CN202883393U CN 202883393 U CN202883393 U CN 202883393U CN 201220527172 CN201220527172 CN 201220527172 CN 201220527172 U CN201220527172 U CN 201220527172U CN 202883393 U CN202883393 U CN 202883393U
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- centrifugal pump
- valve
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- inlet
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Abstract
The utility model relates to a centrifugal pump with an overpressure protection device. The centrifugal pump comprises a centrifugal pump body, an outlet valve arranged on an outlet pipeline of the centrifugal pump and an inlet valve arranged on an inlet pipeline of the centrifugal pump. The centrifugal pump further comprises the overpressure protection device, wherein the overpressure protection device comprises a protection pipeline and a safety valve, the safety valve is arranged on the protection pipeline, and the protection pipeline is arranged between the outlet valve and the inlet valve. The centrifugal pump with the overpressure protection device has the advantages of being simple in structure, convenient to operate, and good in safety performance. When the centrifugal pump works, once pressure difference between the inlet valve and the outlet valve surpasses jump pressure of the safety valve, the safety valve jumps, the inlet and the outlet of the centrifugal pump are communicated, and thus the centrifugal pump is prevented from being harmed by over high working pressure.
Description
Technical field
The utility model relates to a kind of centrifugal pump, specifically relates to a kind of centrifugal pump with overpressure protector.
Background technique
Centrifugal pump relies on rotary blade that the effect of liquid is passed to liquid to the mechanical energy of prime mover.Because the effect liquid of centrifugal pump flows to the process of outlet from impeller inlet, its speed energy and pressure energy are all increased, the liquid of being discharged by impeller passes through delivery chamber, most of speed can convert pressure energy to, then transfer out along discharge conduit, at this moment, the impeller inlet place forms vacuum or low pressure because of the discharge of liquid, liquid in the priming reservoir is under the effect of liquid level pressure (barometric pressure), be pressed into the import of impeller, so the impeller that is rotating just constantly sucks and discharge liquid continuously, thereby reach the purpose that increases and carry liquid.Centrifugal pump working method commonly used is divided into one step single sucking formula centrifugal pump, one-stage double-sucking centrifugal pump, and multistage centrifugal pumps etc. are divided into again vertical pump and horizontal pump by mounting type.
In the middle of practical application, centrifugal pump is when work, and the impeller high speed rotating passes to circulating water with energy, becomes potential energy and the kinetic energy of water.Wherein, kinetic energy generally all only accounts for the sub-fraction of this part energy, and most Conversion of Energy is the potential energy of water.When centrifugal pump is started shooting, in order to reduce the moment of torsion of motor, can be the valve closing of outlet of centrifugal pump, then slowly open again after opening motor, in this process, all there is threat in the pressure the when pressure in the centrifugal pump can be considerably beyond normal operation for sealing and the Security of centrifugal pump.The outlet of centrifugal pump valve is shut or during pipeline blockage, the pressure in the centrifugal pump can sharply raise, and might cause damage to centrifugal pump or motor if there is artificial incorrect operation.
The model utility content
For reduce the risk, elimination can be to the hurtful factor of centrifugal pump, and the utility model provides a kind of centrifugal pump with overpressure protector.
A kind of centrifugal pump with overpressure protector; described centrifugal pump comprises the centrifugal pump body, be positioned at the outlet valve on the centrifugal pump body export pipeline and be positioned at inlet valve on the centrifugal pump body entrance pipe; described centrifugal pump also comprises overpressure protector; described overpressure protector comprises protection pipeline and safety valve; safety valve is installed on the protection pipeline, and the protection pipeline is arranged between outlet valve and the inlet valve.
Preferably, described export pipeline is connected by flange between the pipeline with protection.
Preferably, described entrance pipe is connected by flange between the pipeline with protection.
Preferably, the diameter of described protection pipeline is 1/4～1/5 of centrifugal pump body outlet diameter.
The utility model is simple in structure, and is easy to operate, and Safety performance is good; centrifugal pump is in when work, in case inlet outlet pressure differential during greater than the release pressure of safety valve, safety valve jumping up; the import of centrifugal pump is communicated with outlet, can effectively protect centrifugal pump not damaged by too high working pressure.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but protection domain of the present utility model is not limited to this.
With reference to Fig. 1; a kind of centrifugal pump with overpressure protector; described centrifugal pump comprises centrifugal pump body 1, be positioned at outlet valve 2 on the centrifugal pump body export pipeline, be positioned at inlet valve 4 and overpressure protector on the centrifugal pump body entrance pipe; described overpressure protector comprises protection pipeline 5 and safety valve 3; safety valve 3 is installed on the protection pipeline 5, and protection pipeline 5 is arranged between outlet valve 2 and the inlet valve 4.
Export pipeline is connected by flange between the pipeline with protection, and entrance pipe is connected by flange with protecting between the pipeline.The diameter of protection pipeline is 1/4 ~ 1/5 of centrifugal pump body outlet diameter.
The centrifugal pump body is ordinary single-stage double suction horizontal centrifugal pump, and flange is smooth formula downhand welding steel flange, and safety valve is that release pressure is 2 ~ 3 times Direct spring loaded safety valve of pump rated head, and outlet valve and inlet valve are respectively butterfly valve.
During the centrifugal pump operation, open outlet valve 2, inlet valve 4, when centrifugal pump inlet outlet pressure differential during greater than the release pressure of safety valve 3, safety valve 3 take-offs, the import of centrifugal pump is communicated with outlet, can prevent effectively that the working pressure in the centrifugal pump from sharply raising, and avoids centrifugal pump or motor are caused damage.In addition, if at the centrifugal pump duration of work, safety valve 3 breaks down, and can close outlet valve 2 and inlet valve 4 in the not out-of-work situation of centrifugal pump, and safety valve 3 is changed.
Claims (4)
1. centrifugal pump with overpressure protector; described centrifugal pump comprises the centrifugal pump body, be positioned at the outlet valve on the centrifugal pump body export pipeline and be positioned at inlet valve on the centrifugal pump body entrance pipe; it is characterized in that: described centrifugal pump also comprises overpressure protector; described overpressure protector comprises protection pipeline and safety valve; safety valve is installed on the protection pipeline, and the protection pipeline is arranged between outlet valve and the inlet valve.
2. the centrifugal pump with overpressure protector according to claim 1 is characterized in that: be connected by flange between described export pipeline and the protection pipeline.
3. the centrifugal pump with overpressure protector according to claim 1 is characterized in that: be connected by flange between described entrance pipe and the protection pipeline.
4. the centrifugal pump with overpressure protector according to claim 1, it is characterized in that: the diameter of described protection pipeline is 1/4～1/5 of centrifugal pump body outlet diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220527172 CN202883393U (en) | 2012-10-16 | 2012-10-16 | Centrifugal pump with overpressure protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220527172 CN202883393U (en) | 2012-10-16 | 2012-10-16 | Centrifugal pump with overpressure protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883393U true CN202883393U (en) | 2013-04-17 |
Family
ID=48074827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220527172 Expired - Fee Related CN202883393U (en) | 2012-10-16 | 2012-10-16 | Centrifugal pump with overpressure protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202883393U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286415A (en) * | 2016-10-21 | 2017-01-04 | 杭州激湍流体科技有限公司 | The peripheral pump of anti-generation noise |
-
2012
- 2012-10-16 CN CN 201220527172 patent/CN202883393U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286415A (en) * | 2016-10-21 | 2017-01-04 | 杭州激湍流体科技有限公司 | The peripheral pump of anti-generation noise |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20151016 |
|
| EXPY | Termination of patent right or utility model |