CN102913463A - Self-priming height test bed for self-priming pump with high priming travel - Google Patents
Self-priming height test bed for self-priming pump with high priming travel Download PDFInfo
- Publication number
- CN102913463A CN102913463A CN2012101409327A CN201210140932A CN102913463A CN 102913463 A CN102913463 A CN 102913463A CN 2012101409327 A CN2012101409327 A CN 2012101409327A CN 201210140932 A CN201210140932 A CN 201210140932A CN 102913463 A CN102913463 A CN 102913463A
- Authority
- CN
- China
- Prior art keywords
- pump
- priming
- self
- test
- inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a self-priming height test bed for a self-priming pump with a high priming travel. The test bed comprises a test pump 1, an adjustable variable-frequency pressurization pump 5 and an electric fixed-difference depressurization valve 9. According to the test bed, the height of the conventional lifting table is used; in order to simulate a state of an actual self-priming height, the adjustable variable-frequency pressurization pump 5 is added on a water-returning pipe of the pump to compensate a pressing head at an inlet of a sprayer of a jet flow device, and the electric fixed-difference depressurization valve 9 is added to increase pressure drop of the inlet of the pump; an inlet of the adjustable variable-frequency pressurization pump 5 is connected with an outlet of the water-returning pipe 4 of the pump, and an outlet of the adjustable variable-frequency pressurization pump 5 is connected with an inlet of the sprayer of the jet flow device 7; and an inlet of the electric fixed-difference depressurization valve 9 is connected with the upper end of a Venturi pipe of the jet flow device 7, and an outlet of the electric fixed-difference depressurization valve 9 is connected with an inlet of the test pump 1. According to a mounting height to be simulated, a lift of the adjustable variable-frequency pressurization pump 5 and a to-be-reduced pressure difference between the inlet and the outlet of the electric fixed-difference depressurization valve 9 are determined and are set. The self-priming height test bed has the characteristics that the actual mounting height of the test bed is not changed and a demand for testing various spraying pumps can be met.
Description
Technical field
The present invention relates to a kind of high priming stroke self priming pump suction lift test bench.
Background technique
Self-priming pump belongs to a kind of special centrifugal pump, only need to add a certain amount of water in pump before it refers to start first, need not intake pipe all is full of water, after startup through certain working time, gas in intake pipe can be discharged, enter immediately a class water pump of normal working.Except the water-power performance parameter that Ordinary Centrifugal Pumps has, outside the parameters such as flow, lift, efficient, suction lift, self-priming time are the distinctive performance parameters of self-priming pump, are the important indicators of estimating the self-priming pump self-priming performance.When suction lift refers to that self-priming pump draws up liquid, liquid level is to the setting height(from bottom) of pump inlet flange center line.Generally, when pump inlet was not installed special device, the setting height(from bottom) of pump was pressure for vaporization, necessary NPSH and the inlet pipeline loss that barometric pressure head height (10.33m) deducts pump, and therefore general setting height(from bottom) is no more than 9m.But in actual applications, particularly now along with the decline of level of ground water, earth's surface water level, a lot of occasions need to be moved the pump that setting height(from bottom) surpasses 9m, and namely high priming stroke self priming pump, at this moment just need to increase special device to realize larger suction lift on pump.Jet pump is a kind of of self-priming pump, and it is comprised of centrifugal pump and fluidic device, and the vacuum that relies on fluidic device to cause at the nozzle place realizes self-priming.As required, more than the self-priming setting height(from bottom) of jet pump can design and reach 40m.
The measurement of suction lift is generally that self-priming pump is arranged on a lifting tower, changes lifting tower to the height in pond.If pump can turn round by successful self-priming under this setting height(from bottom), illustrate that self-priming pump can reach this suction lift, therefore, need to set up the lifting tower of corresponding height with test pump suction lift.Present normally used self-priming pump lifting tower generally can reach the 8-9m height, to adapt to the test of common self-priming pump self-priming performance.But for the higher jet pump of suction lift, adopt above conventional method need to spend a large amount of human and material resources and financial resources and set up specially the raising platform of corresponding height or jet pump is put into very dark well with the test suction lift.At present the domestic lifting tower of also not setting up specially relevant height and deep-well are with test high priming stroke self priming pump suction lift, and the suction lift test of high suction depth jet pump is in space state, has affected the raising of hydraulic performance and the further developing of this pump of this pump.
Traditional test method and test stand are arranged as described below:
Jet pump is comprised of centrifugal pump and fluidic device, at first centrifugal pump is installed under the design and installation height, first fills with water before startup, and the outlet gate valve is closed, starting electrical machinery, and centrifugal pump is started working.Hydraulic pressure in return pipe begins supercharging, and before gate valve was not opened, the water in reflow pipe was got back to again centrifugal pump and continued circulation through fluidic device, intake pipe, and this moment, bottom valve cut out.The outlet gate valve is opened gradually, export a small amount of water and discharges, the liquid around at this moment the water that sprays at a high speed of the nozzle in fluidic device is taken away, the decline of nozzle ambient pressure.Under atmospheric effect, bottom valve is opened (impact that opening degree is exported the gate valve opening degree), begins suction.Along with gate valve is opened gradually, the aperture of bottom valve increases gradually, if pump is normal under this setting height(from bottom), suction lift is the pump setting height(from bottom).
Nowadays more than the suction lift of jet pump can design and reach 40m, obviously, traditional test method is tested this kind pump setting height(from bottom) also need to be more than 40m.If the higher jet pump of test suction lift need to be arranged on it on very high place or lifting tower, namely need very high setting height(from bottom), this must need a large amount of inputs.
Summary of the invention
The object of the present invention is to provide a kind of high priming stroke self priming pump suction lift test bench, can satisfy the test request of the self-priming pump of higher suction lift.Compare with traditional self-priming pump suction lift test bench, this test bench can be measured actual higher suction lift under less setting height(from bottom).
The technical solution adopted in the present invention is as follows: this test stand mainly is comprised of test pump, adjustable freq uency conversion supercharging pump and electronic Fixed differential reducing valve etc.
This test stand utilizes conventional raising platform height, in order to simulate the running state of actual suction lift, increase adjustable freq uency conversion supercharging pump to replenish fluidic device sparger inlet pressure head on the blowback water pipe, increase electronic Fixed differential reducing valve to increase the pressure drop of pump inlet on the pump water inlet pipe.Adjustable freq uency conversion supercharging pump is connected on return pipe return pipe is carried out supercharging, electronic Fixed differential reducing valve is connected on intake pipe intake pipe is reduced pressure, and test pump setting height(from bottom) is conventional setting height(from bottom), i.e. lower setting height(from bottom).
Before test, need to according to the design and installation height of test pump, adjustable freq uency conversion supercharging pump and electronic Fixed differential reducing valve be set, to satisfy the requirement of testing for specific jet pump.
In order to simulate self-priming pump in the running state of actual suction lift, following formula is arranged on the blowback water pipe:
H
g＝H
z+H′
g+H
f1
That is, can regulate the following formula of being set with of freq uency conversion supercharging pumping head:
H
z＝H
g-H′
g-H
f1
H
z: the lift that adjustable freq uency conversion supercharging pump produces, the m of unit
H
g: the design suction lift of test pump, the m of unit
H′
g: the as installed height of this test bench, the m of unit
H
f1: the hydraulic loss in return pipe, the m of unit
In like manner, following formula is arranged on the pump water inlet pipe:
H
g＝H
j+H′
g+H
f2
Electronic Fixed differential reducing valve is set with following formula:
H
j＝H
g-H′
g-H
f2
H
j: the pressure drop that electronic Fixed differential reducing valve produces, the m of unit
H
g: the design suction lift of test pump, the m of unit
H′
g: the setting height(from bottom) of this test bench, the m of unit
H
f2: the hydraulic loss in intake pipe, the m of unit
The present invention has following characteristics: on traditional self-priming pump performance test bed basis, increase adjustable freq uency conversion supercharging pump, electronic Fixed differential reducing valve, realize the measurement of high priming stroke self priming pump suction lift.Do not change the as installed height of test pump, by adjustable freq uency conversion supercharging pump and electronic Fixed differential reducing valve are set, can realize simulating various setting height(from bottom)s, namely can satisfy the demand of various jet pump tests, and need not to increase new test bench installation and drop into, test process is simple, convenient.
Description of drawings
Accompanying drawing 1 is test stand schematic diagram of the present invention.
Embodiment
The below elaborates to embodiments of the invention, and the present embodiment is to implement under prerequisite in technical solution of the present invention, provided detailed mode of execution and concrete implementation process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, this test stand mainly is comprised of test pump 1 (comprising fluidic device 7, threeway 2, gate valve 3 and bottom valve 6), adjustable freq uency conversion supercharging pump 5 and electronic Fixed differential reducing valve 9 etc.This test stand Main Function mainly contains return pipe supercharging and intake pipe decompression.The return pipe supercharging is to realize by adjustable freq uency conversion supercharging pump 5, and the intake pipe decompression is to realize by electronic Fixed differential reducing valve 9.Adjustable freq uency conversion supercharging pump 5 imports are connected with 4 outlets of blowback water pipe, and outlet is connected with fluidic device 7 sparger imports; Electronic Fixed differential reducing valve 9 imports and fluidic device 7 literary compositions are told inner pipe upper end and are connected, outlet with test pump 1 import and be connected.
By reference to the accompanying drawings 1, at first, will test pump 1 and be fixed on test stand, setting height(from bottom) is H '
g, need the setting height(from bottom) H that simulates
g, determine the lift H of adjustable freq uency conversion supercharging pump 5
z
To adjustable freq uency conversion supercharging pump 5 lift H
zBe set with following formula:
H
z＝H
g-H′
g-H
f1
H
z: the lift that adjustable freq uency conversion supercharging pump 5 produces, the m of unit
H
g: the design suction lift of test pump 1, the m of unit
H′
g: the as installed height of this test bench, the m of unit
H
f1: the hydraulic loss in return pipe, the m of unit
Secondly, the setting height(from bottom) H that simulates as required
g, determine the pressure reduction that electronic Fixed differential reducing valve 9 import and export need to reduce, to the pressure drop H of electronic Fixed differential reducing valve 9 generations
jSet.
To electronic Fixed differential reducing valve 9 pressure drop H
jBe set with following formula:
H
j＝H
g-H′
g-H
f2
H
j: the pressure drop that electronic Fixed differential reducing valve 9 produces, the m of unit
H
g: the design suction lift of test pump 1, the m of unit
H′
g: the setting height(from bottom) of this test bench, the m of unit
H
f2: the hydraulic loss in intake pipe, the m of unit
At last, after setting, can test jet pump.When self-priming pump can successful self-priming illustrate this pump test passes, otherwise test failure just is described.
The present invention has following characteristics: on traditional self-priming pump performance test bed basis, increase adjustable freq uency conversion supercharging pump 5, electronic Fixed differential reducing valve 9, realize the measurement of high priming stroke self priming pump suction lift.Do not change the as installed height of test pump, by adjustable freq uency conversion supercharging pump 5 and electronic Fixed differential reducing valve 9 are set, can realize simulating various setting height(from bottom)s, namely can satisfy the demand of various jet pump tests, and need not to increase test bench installation and drop into, test process is simple, convenient.
In the present embodiment, the test Type of pump is JP-505, and the design performance parameter of tested pump is as follows:
Flow 10m
3/ h, lift 80m, power 1.8Kw sucks bore 25mm, inhales journey H
g=23m.
The setting height(from bottom) of pump is decided to be H '
g=3m in order to satisfy the suction journey needs of 23m, needs to utilize adjustable freq uency conversion supercharging pump 5 to increase the head of 20m in return pipe 4, utilizes electronic Fixed differential reducing valve 9 to reduce head (the line loss H of 20m in intake pipe 8
f1And H
f2Omit, be as the criterion with actual conditions when measuring).
Freq uency conversion supercharging pump 5 lift Hs adjustable according to formula (1)
zBe set as 20m.
Pressure drop H according to the electronic Fixed differential reducing valve 9 of formula (2)
jBe set as 20m, namely inlet and outlet pressure is poor should be set as 0.2Mpa.
Namely the test stand under this setting can measure that to inhale journey be the dark sucking pump of JP-505 of 23m.
Claims (3)
1. high priming stroke self priming pump suction lift test bench is characterized in that: this test stand mainly is comprised of test pump 1, adjustable freq uency conversion supercharging pump 5 and electronic Fixed differential reducing valve 9 etc.
Adopt conventional raising platform height, in order to simulate the running state of actual suction lift, increase adjustable freq uency conversion supercharging pump 5 to replenish fluidic device sparger inlet pressure head on the blowback water pipe, increase electronic Fixed differential reducing valve 9 with the pressure drop of increase pump inlet.
Adjustable freq uency conversion supercharging pump 5 imports are connected with return pipe 4 outlets, and outlet is connected with fluidic device 7 sparger imports; Electronic Fixed differential reducing valve 9 imports and fluidic device 7 literary compositions are told inner pipe upper end and are connected, outlet with test pump 1 import and be connected.
2. high priming stroke self priming pump suction lift test bench according to claim 1 is characterized in that: the setting height(from bottom) of simulation as required, determine the lift of adjustable freq uency conversion supercharging pump 5, and adjustable freq uency conversion supercharging pump 5 is set.
3. high priming stroke self priming pump suction lift test bench according to claim 1 is further characterized in that: the setting height(from bottom) of simulation as required, determine that electronic Fixed differential reducing valve 9 imports and exports the pressure reduction that need to reduce, and electronic Fixed differential reducing valve 9 is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210140932.7A CN102913463B (en) | 2012-05-09 | 2012-05-09 | Self-priming height test bed for self-priming pump with high priming travel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210140932.7A CN102913463B (en) | 2012-05-09 | 2012-05-09 | Self-priming height test bed for self-priming pump with high priming travel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102913463A true CN102913463A (en) | 2013-02-06 |
| CN102913463B CN102913463B (en) | 2014-12-17 |
Family
ID=47611978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210140932.7A Expired - Fee Related CN102913463B (en) | 2012-05-09 | 2012-05-09 | Self-priming height test bed for self-priming pump with high priming travel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102913463B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103631992A (en) * | 2013-11-07 | 2014-03-12 | 华南理工大学 | Computing method for flow simulation in self-priming process of self-priming pump |
| CN104564921A (en) * | 2015-01-12 | 2015-04-29 | 西南交通大学 | Assistant oil absorption device |
| CN104912818A (en) * | 2015-06-16 | 2015-09-16 | 合肥工业大学 | Movable pump station |
| CN105403396A (en) * | 2015-12-16 | 2016-03-16 | 江苏大学 | Pump self-priming process internal and external characteristic cooperation test system |
| CN111963453A (en) * | 2020-07-24 | 2020-11-20 | 山东省农业机械科学研究院 | Self-priming performance test system and test method for self-priming pump |
| CN113175437A (en) * | 2021-05-08 | 2021-07-27 | 格力大松（宿迁）生活电器有限公司 | Water pump lift testing device and water pump lift testing method |
| CN114704477A (en) * | 2022-04-15 | 2022-07-05 | 中国计量大学 | Self-priming height testing device and method for self-priming pump |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242587B (en) * | 2019-04-30 | 2020-10-16 | 武汉船用机械有限责任公司 | Performance test device for self-lubricating centrifugal pump |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069496U (en) * | 1990-02-09 | 1991-01-16 | 福建省机械科学研究院 | High lift water pump for deep well |
| CN2918549Y (en) * | 2006-06-05 | 2007-07-04 | 蔡可振 | Internal recycle self-pressurized frequency change water-service device |
| JP2008169622A (en) * | 2007-01-11 | 2008-07-24 | Toho Chisui Kk | Pumping test method and pumping test device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1731989A1 (en) * | 1989-07-09 | 1992-05-07 | Барнаульский станкостроительный завод | Stand for testing self-priming pump |
-
2012
- 2012-05-09 CN CN201210140932.7A patent/CN102913463B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069496U (en) * | 1990-02-09 | 1991-01-16 | 福建省机械科学研究院 | High lift water pump for deep well |
| CN2918549Y (en) * | 2006-06-05 | 2007-07-04 | 蔡可振 | Internal recycle self-pressurized frequency change water-service device |
| JP2008169622A (en) * | 2007-01-11 | 2008-07-24 | Toho Chisui Kk | Pumping test method and pumping test device |
Non-Patent Citations (1)
| Title |
|---|
| 刘建瑞等: "射流式自吸离心泵的试验研究", 《中国农村水利水电》, no. 4, 30 April 2007 (2007-04-30), pages 66 - 68 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103631992A (en) * | 2013-11-07 | 2014-03-12 | 华南理工大学 | Computing method for flow simulation in self-priming process of self-priming pump |
| CN104564921A (en) * | 2015-01-12 | 2015-04-29 | 西南交通大学 | Assistant oil absorption device |
| CN104912818A (en) * | 2015-06-16 | 2015-09-16 | 合肥工业大学 | Movable pump station |
| CN105403396A (en) * | 2015-12-16 | 2016-03-16 | 江苏大学 | Pump self-priming process internal and external characteristic cooperation test system |
| CN111963453A (en) * | 2020-07-24 | 2020-11-20 | 山东省农业机械科学研究院 | Self-priming performance test system and test method for self-priming pump |
| CN113175437A (en) * | 2021-05-08 | 2021-07-27 | 格力大松（宿迁）生活电器有限公司 | Water pump lift testing device and water pump lift testing method |
| CN114704477A (en) * | 2022-04-15 | 2022-07-05 | 中国计量大学 | Self-priming height testing device and method for self-priming pump |
| CN114704477B (en) * | 2022-04-15 | 2023-09-15 | 中国计量大学 | Self-priming height testing device and method for self-priming pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102913463B (en) | 2014-12-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102913463B (en) | Self-priming height test bed for self-priming pump with high priming travel | |
| CN202348689U (en) | Self-priming pump for deep well | |
| CN202937463U (en) | Self-sucking height test table for high-suction self-sucking pump | |
| CN202132248U (en) | Non-negative pressure energy-saving pump | |
| CN205296299U (en) | Steady voltage pot -type does not have negative pressure water supply equipment | |
| CN204023717U (en) | A kind of pot type non-negative pressure water-supply installation of many pumps multifrequency | |
| CN201687726U (en) | Synchronous self-priming pump | |
| CN102707739B (en) | Working state control system and control method for pumping oil supply simulation chamber | |
| CN203430802U (en) | Multistage small submersible electric pump with check valve | |
| CN201166014Y (en) | Novel wind power water pump | |
| CN204476793U (en) | The two-tube height of a kind of deep-well is inhaled and is sprayed centrifugal pump | |
| CN205115050U (en) | Can prepare membrane system nitrogen device of high -purity nitrogen gas | |
| CN107061300B (en) | Intelligent low-noise self-suction compound pump | |
| CN204435469U (en) | A kind of irrigation and water conservancy irrigation pumping station pumping system | |
| CN102777426B (en) | Self-cleaning type water suction bottom valve | |
| CN204716636U (en) | A kind of device eliminating cavitation | |
| CN205317452U (en) | Oil injection pump test device | |
| CN207621011U (en) | The test system that gas influences performance of centrifugal pump in hydrate recovery process | |
| CN106194778B (en) | A kind of novel experiment device and test method for measuring self priming pump self-priming performance | |
| CN206274026U (en) | A kind of Intelligent constant-voltage water supply unit | |
| CN105604928B (en) | A kind of experimental system suitable for deep well pump | |
| CN110388313A (en) | Intelligent constant-voltage water supply unit | |
| CN203420950U (en) | Washing device of gas compressor of combustion gas turbine | |
| CN203569638U (en) | Intelligent tank-type water supplying equipment | |
| CN203702579U (en) | Amphibious mute high-pressure pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20141217 Termination date: 20190509 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |