CN209280244U - It is a kind of for detecting the device of the interior breakthrough rate of check valve - Google Patents
It is a kind of for detecting the device of the interior breakthrough rate of check valve Download PDFInfo
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- CN209280244U CN209280244U CN201821845421.4U CN201821845421U CN209280244U CN 209280244 U CN209280244 U CN 209280244U CN 201821845421 U CN201821845421 U CN 201821845421U CN 209280244 U CN209280244 U CN 209280244U
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Abstract
The utility model discloses a kind of for detecting the device of the interior breakthrough rate of check valve, it is connect with detected check valve, including transfusion system, the A high pressure generating system being connect with transfusion system, the A pressure monitor system being connect with A high pressure generating system, B high pressure generating system, the B pressure monitor system being connect with B high pressure generating system and the control that is connect with A high pressure generating system and B high pressure generating system and record system respectively；The A pressure monitor system is connected with B high pressure generating system respectively at detected check valve.The beneficial effects of the utility model are: the utility model directly can measure small interior breakthrough rate of the check valve under the pressure condition similar with actual working environment to fast precise.
Description
Technical field
The utility model relates to the testing field technical fields of micro hydraulic check valve, are a kind of for examining specifically
Survey the device of the interior breakthrough rate of check valve.
Background technique
Check valve is widely used in high-pressure fluid equipment, is the core devices of high-pressure plunger pump, hydraulic device.Miniature list
It is generally made of to valve ball, ball seat, spring, valve jacket, gasket etc..Internal leakage is the important indicator for measuring check valve quality.
In high-accuracy high-pressure fluid instrument and equipment, such as in high performance liquid chromatograph, rheometer, to the performance requirement pole of check valve
Height, the interior leakage of check valve, which must be controlled, just can guarantee the normal work of instrument in very small value (μ L/min to nL/min magnitude)
Make.But traditionally the internal leakage measurement method of hydraulic component records leakage liquid volume or measures flow using flow sensor
Value, is calculated leakage magnitude.These test methods are influenced by extraneous factor, test efficiency is low, measurement accuracy is not high, and nothing
Method is used for the measurement under micro-, small traffic conditions.At present lack suitable for Miniature precision check valve, can accurately measure so it is low
The detection device and method of interior amount of leakage.
Utility model content
The purpose of this utility model is to provide a kind of for detecting the device of the interior breakthrough rate of check valve, can be quick
Critically directly measure small interior breakthrough rate of the check valve under the pressure condition similar with actual working environment.
The utility model is achieved through the following technical solutions: it is a kind of for detecting the device of the interior breakthrough rate of check valve,
It is connect with detected check valve, including transfusion system, the A high pressure generating system being connect with transfusion system and A high pressure generating system
A pressure monitor system, B high pressure generating system, the B pressure monitor system being connect with B high pressure generating system and the difference of connection
The control and record system being connect with A high pressure generating system and B high pressure generating system；The A pressure monitor system and B high pressure
Raw system is connected respectively at detected check valve.
A high pressure generating system, B high pressure generating system mainly for generation of simulation workpiece working environment high pressure.A simultaneously
High pressure generating system, B high pressure occur to be to have the function of displacement measurement.
Further, in order to preferably realize the utility model, the A high pressure generating system and B high pressure generating system knot
Structure is identical；
The A high pressure generating system includes A high-pressure plunger pump ontology, A plunger and is used for A plunger in A high-pressure plunger pump
The A high-pressure plunger pump drive moved in ontology, the A high-pressure plunger pump ontology respectively with transfusion system and A pressure monitoring
System connection；The A high-pressure plunger pump drive is connect with control with record system；
The B high pressure generating system includes B high-pressure plunger pump ontology, B plunger and is used for B plunger in B high-pressure plunger pump
The B high-pressure plunger pump drive moved in ontology, the B high-pressure plunger pump ontology respectively with detected check valve and B pressure
The connection of monitoring system；The B high-pressure plunger pump drive is connect with control with record system；
The displacement measuring device connecting with control with record system is respectively arranged on the A plunger and B plunger.
It further, further include the liquids recovery being connect with B pressure monitor system in order to preferably realize the utility model
System；The liquid recovery system includes shut-off valve, the waste liquid bottle successively being connect with B pressure monitor system by pipeline.
Further, in order to preferably realize the utility model, the transfusion system includes liquid storage bottle, by pipeline and storage
The A check valve of liquid bottle connection；The A check valve is connect by pipeline with A high-pressure plunger pump ontology.
Further, in order to preferably realize the utility model, institute's displacement measurement device is grating scale sensor.
Further, in order to preferably realize that the utility model, the A pressure monitor system and B pressure monitor system are equal
For pressure sensor；The model OMEGA PX01C0-30KA5T of the pressure sensor.
Further, in order to preferably realize the utility model, the control is single-chip microcontroller, FPGA, DSP with record system
One of.
Working principle:
Firstly, detected check valve is connected between A pressure monitor system and B high pressure generating system, so that entire dress
It is hydraulically full in setting；The control intrinsic pressure of B ram compression high-pressure plunger pump makes B pressure monitor system reach specified pressure
Power P, dynamic adjust the movement of B plunger, keep the stable reading of B pressure monitor system near pressure value P, record a period of time
The mobile distance of interior B plunger, knot B diameter of plunger can calculate the liquid volume leaked during this.Calculating is forced into list
The overall percolation ratio Q1 measured after to valve operating pressure P.
Then, control A ram compression liquid makes A pressure monitor system reading P' be slightly less than specified pressure P, such as P'=
P-200psi, check valve is in close state at this time, but the pressure difference very little of entrance side and outlet side.Dynamic adjusts the shifting of A plunger
It is dynamic, keep the pressure of A pressure monitor system to stablize near P'.Dynamic adjusts the movement of B plunger, keeps B pressure monitor system
Stable reading near P.The distance that B plunger is mobile in a period of time is recorded again, calculates the liquid leaked during this
Body volume.Calculate percolation ratio Q2；
To calculate interior percolation ratio Q=Q1-Q2 of tested check valve.
The utility model compared with prior art, have the following advantages that and the utility model has the advantages that
(1) the utility model directly can measure check valve in the pressure strip similar with actual working environment to fast precise
Small interior breakthrough rate under part；
(2) accuracy is high compared with prior art for the utility model；
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Wherein 4- is detected check valve, 5-A check valve, 6-A high-pressure plunger pump ontology, 61-A plunger, 7-A pressure monitoring system
System, 8-B high-pressure plunger pump ontology, 81-B plunger, 9-B pressure monitor system, 10- shut-off valve, 11- waste liquid bottle, 12-B high-pressure column
Fill in pump drive, 13- control and record system, 14-A high-pressure plunger pump drive, 15- liquid storage bottle.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, merely to just
In description the utility model and simplify description, rather than the device or element of indication or suggestion meaning there must be specific side
Position is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
The utility model is described in further detail below with reference to embodiment, but the embodiments of the present invention is not
It is limited to this.
Embodiment 1:
The utility model is achieved through the following technical solutions, as shown in Figure 1, a kind of interior leakage speed for detecting check valve
The device of rate is connect with detected check valve 4, including transfusion system, the A high pressure generating system connecting with transfusion system and A high
Press A pressure monitor system 7, the B high pressure generating system, the B pressure monitoring system connecting with B high pressure generating system of generating system connection
System 9 and the control being connect respectively with A high pressure generating system and B high pressure generating system and record system 13；The A pressure monitoring
System 7 and B high pressure generating system are connected respectively at detected check valve 4.
It should be noted that detected check valve 4 is mounted on A pressure monitor system 7 and B first by above-mentioned improvement
Between high pressure generating system；
Full pressure fluid medium is perfused in whole device by transfusion system, the outlet of the present apparatus is sealed；
B high pressure generating system compresses the pressure fluid medium of its inside, so that B pressure monitor system 9 reaches finger
Fixed pressure, B high pressure generating system internal dynamic adjusts at this time, keeps the stable reading of B pressure monitor system 9 in specified pressure
Near value P, the mobile distance of record a period of time inner plunger can calculate the liquid volume leaked during this；It calculates and adds
It is depressed into the overall percolation ratio Q1 measured after non-return valve operational pressure P;
Then A high pressure generating system compression pressure fluid media (medium) is slightly less than the reading P' of A pressure monitor system 7 specified
Pressure P, such as P'=P-200psi；A high pressure generating system internal dynamic adjusts at this time, keeps the pressure of A pressure monitor system 7
Stablize near P'.Dynamic adjustment B high pressure generating system, keeps the stable reading of A pressure monitor system 7 near P.Remember again
The mobile distance of the plunger of a period of time inner plunger pump B is recorded, the liquid volume leaked during this is calculated.Calculate the leakage
Rate Q2；
To calculate interior percolation ratio Q=Q1-Q2 of detected check valve 4.
The other parts of the present embodiment are same as the previously described embodiments, and so it will not be repeated.
Embodiment 2:
The present embodiment advanced optimizes on the basis of the above embodiments, as shown in Figure 1, the A high pressure generating system
It is identical as B high pressure generating system structure；
The A high pressure generating system includes A high-pressure plunger pump ontology 6, A plunger 61 and is used for A plunger 61 in A high-pressure column
The A high-pressure plunger pump drive moved in plug pump ontology 6, the A high-pressure plunger pump ontology 6 are pressed with transfusion system and A respectively
Power monitors system 7 and connects；The A high-pressure plunger pump drive is connect with control with record system 13；
The B high pressure generating system includes B high-pressure plunger pump ontology 8, B plunger 81 and is used for B plunger 81 in B high-pressure column
Plug pump ontology 8 in move A high-pressure plunger pump drive 12, the B high-pressure plunger pump ontology 8 respectively with detected check valve
4 and B pressure monitor system 9 connects；The A high-pressure plunger pump drive 12 is connect with control with record system 13；
The displacement measurement that connection is connect with control with record system 13 is respectively arranged on the A plunger 61 and B plunger 81
Device.
It should be noted that detected check valve 4 is connected to A pressure monitor system 7 and B high pressure by above-mentioned improvement
Between plunger pump ontology 8, so that hydraulically full in whole device；It controls B plunger 81 and compresses the intrinsic pressure of high-pressure plunger pump
So that B pressure monitor system 9 reaches specified pressure P, dynamic adjusts the movement of plunger, keeps the reading of B pressure monitor system 9
Stablize near pressure value P, records the distance that B plunger 81 is mobile in a period of time, this can be calculated in conjunction with 81 diameter of B plunger
The liquid volume leaked during one.Calculating is forced into the overall percolation ratio Q1 measured after non-return valve operational pressure P.
Then, control plunger A compressed liquid makes A pressure monitor system 7 read P' and is slightly less than specified pressure P, such as P'=
P-200psi.Dynamic adjusts the movement of A plunger 61, and the pressure of A pressure monitor system 7 is kept to stablize near P'.Dynamic adjusts
The movement of plunger keeps the stable reading of B pressure monitor system 9 near P.It is mobile that B plunger 81 in a period of time is recorded again
Distance, calculate the liquid volume leaked during this.Calculate percolation ratio Q2；
To calculate interior percolation ratio Q=Q1-Q2 of tested check valve.
Displacement involved in test process is measured using displacement measuring device, displacement measuring device surveys displacement
By data information transfer to control and record system 13 after amount, control records data information with record system 13.
The pressure for being detected 4 entrance side liquid of check valve is monitored by A pressure monitor system 7, passes through B pressure monitor system
9 monitoring are through B high pressure generating system pressure adjusted；In the case where internal pressure is constant, the body of B high pressure generating system propulsion
Product is the leak liquid volume of entire cavity.And it is respectively under normal pressure and high pressure by measuring detected one-way valve inlet side
The leakage rate of two state lower chambers, difference are the interior leakage rate of check valve.
It is generated by A high pressure generating system and B high pressure generating system and simulates the height for being detected check valve actual working environment
Pressure measures the whole leakage rate for the system under one-way valve inlet side normal pressure and condition of high voltage that is detected, twice leakage rate respectively
Subtract each other the interior leakage rate for obtaining being detected check valve.
The other parts of the present embodiment are same as the previously described embodiments, and so it will not be repeated.
Embodiment 3:
The present embodiment advanced optimizes on the basis of the above embodiments, further includes as shown in Figure 1 and B pressure monitoring system
The liquid recovery system of 9 connection of system；The liquid recovery system includes successively being connect with B pressure monitor system 9 by pipeline
Shut-off valve 10, waste liquid bottle 11.
The other parts of the present embodiment are same as the previously described embodiments, and so it will not be repeated.
Embodiment 4:
The present embodiment advanced optimizes on the basis of the above embodiments, as shown in Figure 1, the transfusion system includes storage
Liquid bottle 15, the A check valve 5 being connect by pipeline with liquid storage bottle 15；The A check valve 5 passes through pipeline and A high-pressure plunger pump ontology
6 connections.
It should be noted that A check valve 5 guarantees that pressure fluid medium is not in reflux by above-mentioned improvement, will not return
It flows in liquid storage bottle 15；So that pressure fluid medium can only be flowed into A high-pressure plunger pump ontology 6 from liquid storage bottle 15.
The other parts of the present embodiment are same as the previously described embodiments, and so it will not be repeated.
Embodiment 5:
The present embodiment advanced optimizes on the basis of the above embodiments, as shown in Figure 1, institute's displacement measurement device is
Grating scale sensor.
The A pressure monitor system 7 and B pressure monitor system 9 are pressure sensor；The model of the pressure sensor
For OMEGA PX01C0-30KA5T.
The control is one of single-chip microcontroller, FPGA, DSP with record system 13.
It should be noted that the technologies such as single-chip microcontroller, FPGA, DSP can be used with record system 13 in control by above-mentioned improvement
It realizes.Control in the present apparatus and record system 13 simultaneously have no special requirements, it might even be possible to use the electronic building blocks sold in Taobao
Arduino and stepper motor driving plate are realized.
A high-pressure plunger pump drive and B high-pressure plunger pump drive in the utility model can be used using step
It is realized into motor, lead screw, nut driving, encoder can be installed on motor shaft, thus can measure and obtain the rotation of motor
The shift length of plunger can be obtained according to transmission ratio for angle.
Control and record system 13, pressure sensor, high pressure generating system, A high-pressure plunger pump in the utility model are driven
Dynamic device 14, B high-pressure plunger pump drive 12 are the prior art, use already highly developed high performance liquid chromatograph device
Same money component used.
The improvement of the utility model is not belonging to the improvement of the internal structure of upper-part, its internal junction that so it will not be repeated
Structure.
The other parts of the present embodiment are same as the previously described embodiments, and so it will not be repeated.
The above is only the preferred embodiment of the utility model, not does limit in any form to the utility model
System, any simple modification made by the above technical examples according to the technical essence of the present invention, equivalent variations, each falls within
Within the protection scope of the utility model.
Claims (7)
1. it is a kind of for detecting the device of the interior breakthrough rate of check valve, it is connect with detected check valve (4), it is characterised in that:
Including transfusion system, the A high pressure generating system being connect with transfusion system, the A pressure monitor system being connect with A high pressure generating system
(7), B high pressure generating system, the B pressure monitor system (9) that is connect with B high pressure generating system and it is with A high pressure respectively
The control and record system (13) of system and the connection of B high pressure generating system；The A pressure monitor system (7) and B high pressure generating system
It is connected respectively at detected check valve (4).
2. according to claim 1 a kind of for detecting the device of the interior breakthrough rate of check valve, it is characterised in that: described
A high pressure generating system is identical as B high pressure generating system structure；
The A high pressure generating system includes A high-pressure plunger pump ontology (6), A plunger (61) and is used for A plunger (61) in A high pressure
The A high-pressure plunger pump drive moved in plunger pump ontology (6), the A high-pressure plunger pump ontology (6) respectively with transfusion system
It is connected with A pressure monitor system (7)；The A high-pressure plunger pump drive is connect with control with record system (13)；
The B high pressure generating system includes B high-pressure plunger pump ontology (8), B plunger (81) and is used for B plunger (81) in B high pressure
The A high-pressure plunger pump drive (12) moved in plunger pump ontology (8), the B high-pressure plunger pump ontology (8) respectively with it is tested
Survey check valve (4) and B pressure monitor system (9) connection；The A high-pressure plunger pump drive (12) and control and record system
(13) it connects；
It is respectively arranged on the A plunger (61) and B plunger (81) and is filled with the displacement measurement that control is connect with record system (13)
It sets.
3. according to claim 2 a kind of for detecting the device of the interior breakthrough rate of check valve, it is characterised in that: also wrap
Include the liquid recovery system connecting with B pressure monitor system (9)；The liquid recovery system includes successively being pressed with B by pipeline
Power monitors the shut-off valve (10) of system (9) connection, waste liquid bottle (11).
4. according to claim 3 a kind of for detecting the device of the interior breakthrough rate of check valve, it is characterised in that: described
Transfusion system includes liquid storage bottle (15), passes through the A check valve (5) that pipeline is connect with liquid storage bottle (15)；The A check valve (5) is logical
Piping is connect with A high-pressure plunger pump ontology (6).
5. described in any item a kind of for detecting the device of the interior breakthrough rate of check valve, feature according to claim 2-4
Be: institute's displacement measurement device is grating scale sensor.
6. according to claim 5 a kind of for detecting the device of the interior breakthrough rate of check valve, it is characterised in that: described
A pressure monitor system (7) and B pressure monitor system (9) are pressure sensor；The model OMEGA of the pressure sensor
PX01C0-30KA5T。
7. according to claim 6 a kind of for detecting the device of the interior breakthrough rate of check valve, it is characterised in that: described
Control is one of single-chip microcontroller, FPGA, DSP with record system (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821845421.4U CN209280244U (en) | 2018-11-09 | 2018-11-09 | It is a kind of for detecting the device of the interior breakthrough rate of check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821845421.4U CN209280244U (en) | 2018-11-09 | 2018-11-09 | It is a kind of for detecting the device of the interior breakthrough rate of check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209280244U true CN209280244U (en) | 2019-08-20 |
Family
ID=67600858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821845421.4U Active CN209280244U (en) | 2018-11-09 | 2018-11-09 | It is a kind of for detecting the device of the interior breakthrough rate of check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209280244U (en) |
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2018
- 2018-11-09 CN CN201821845421.4U patent/CN209280244U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230724 Address after: 610, Floor 6, Block A, No. 2, Lize Middle Second Road, Chaoyang District, Beijing 100102 Patentee after: Zhongguancun Technology Leasing Co.,Ltd. Address before: No. 701 and 709, 7th floor, building 15, No. 1999, Yizhou Avenue, Chengdu hi tech Zone, Chengdu pilot Free Trade Zone, Sichuan 610041 Patentee before: CHENGDU KERUI TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |