CN109883627A - A kind of valve leak detecting tool and detection method - Google Patents
A kind of valve leak detecting tool and detection method Download PDFInfo
- Publication number
- CN109883627A CN109883627A CN201910249991.XA CN201910249991A CN109883627A CN 109883627 A CN109883627 A CN 109883627A CN 201910249991 A CN201910249991 A CN 201910249991A CN 109883627 A CN109883627 A CN 109883627A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- valve
- outlet
- spool
- media
- 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.)
- Pending
Links
Abstract
The present invention relates to valve detection apparatus fields, more particularly to a kind of valve leak detecting tool and detection method.The detecting tool, for spool leak detection, valve rod is installed at the top of spool, including sleeve and bonnet assemblies, the bonnet assemblies, which cover, seals sleeve inner at the top of sleeve, and the sleeve is equipped with medium inlet and media outlet, the spool is placed in sleeve, and simulation sealing pair is cooperatively formed with sleeve lining, for the simulation sealing pair between medium inlet and media outlet, the media outlet is equipped with media discharge metrological service.It is at low cost the beneficial effects of the present invention are: structure is simple, simulation sealing pair is cooperatively formed by sleeve and spool, without complete machine just can independent detection go out the leakage rate at each clearance fit, it is simple to operate.
Description
Technical field
The present invention relates to valve detection apparatus fields, more particularly to a kind of valve leak detecting tool and detection method.
Background technique
Valve because between each component there are the upper sealing pair formed between fit clearance, such as spool and sleeve, spool with
There is fit clearance in the sealing pair formed between lower sealing pair, spool valve line and the valve seat formed between sleeve, and these
Fit clearance be easy to cause dielectric leakage.It is this because caused by fit clearance leakage be unavoidable, but by reasonably setting
Meter, it is possible to reduce leakage rate reaches technical standard requirement.Therefore it needs the leakage test at fit clearance to come out, is valve
Door design provides data supporting.
And the traditional test method of gap leakage flow rate is measured by a complete machine at present, but this overall measurement
Mode can only measure total leakage rate, can not measure the independent leakage rate at each fit clearance respectively, therefore can not be each gap
Matching design, which provides, has targetedly data supporting.In addition, due to complete machine complicated integral structure, manufacturing cost is high, assembles inspection
Survey low efficiency.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of valve leak detecting tool and
Detection method, for solve valve leak assay device structures in the prior art are complicated, the leakage rate at each clearance fit can not
Individually the problem of detection.
In order to achieve the above objects and other related objects, the present invention provides a kind of valve leak detecting tool, is used for spool
Leak detection, spool top are equipped with valve rod, including sleeve and bonnet assemblies, and the bonnet assemblies cover to cover at the top of sleeve
Cylinder inner sealing, the sleeve are equipped with medium inlet and media outlet, and the spool is placed in sleeve, and is matched with sleeve lining
It closes and forms simulation sealing pair, between medium inlet and media outlet, the media outlet is equipped with the simulation sealing pair
Media discharge metrological service.
The beneficial effects of the present invention are: structure is simple, and it is at low cost, simulation sealing pair is cooperatively formed by sleeve and spool,
Without complete machine just can independent detection go out the leakage rate at each clearance fit, it is simple to operate.
It optionally, further include executing agency, the executing agency is mounted on bonnet assemblies, the executing agency and stretching
Valve rod connection at the top of bonnet assemblies, and sealing force is applied to spool by valve rod, by being situated between inside executing agency's balancing sleeve
The upward active force of confrontation spool, so that stable structure；Sealing force is applied to spool simultaneously, so that spool is close with sleeve inner
Fitting, it is more accurate to measure.
Optionally, the media discharge metrological service includes control valve, and the evacuation port of the control valve is equipped with flowmeter.
Optionally, the control valve is Pneumatic valve or pilot operated valve device.
Optionally, the cavity inner wall of the sleeve is equipped with the cooperation station for cooperatively forming simulation sealing pair with spool,
And the cooperation station is between medium inlet and media outlet.
Optionally, the bonnet assemblies include bonnet, and packing elements are equipped in the bonnet, and the valve rod passes through
Bonnet, and cooperate sealing so that sleeve inner seals with packing elements.
Optionally, the top of the sleeve is equipped with stepped part, and the stepped part is equipped with gasket seal, the bonnet,
It pushes down gasket seal and is locked with sleeve in bottom.
Optionally, the media outlet includes first outlet and second outlet, the medium inlet be located at first outlet and
Between second outlet.
Beneficial effect using above-mentioned optionally scheme is: topology layout compact and reasonable ensure that the sealing of sleeve inner
Property, the accuracy of leakage rate detection is improved, convenient for measuring the dielectric leakage amount at each clearance fit respectively.
Spool to be measured is installed to sleeve inner, and cooperatively forms mould with sleeve lining by a kind of valve leak detection method
Quasi- sealing pair, is arranged medium inlet and media outlet on sleeve, and in media outlet install medium emission measurement mechanism, will be situated between
Matter is injected by medium inlet, and medium is discharged by media outlet again after flowing through simulation sealing pair, and passes through media discharge metrological service
Measure the media discharge amount of corresponding media outlet.
Optionally, the export volume of the media outlet is identical as the simulation quantity of sealing pair, and corresponds, and works as detection
When the leakage rate of one of simulation sealing pair, outlet corresponding with other simulation sealing pairs is closed.
The beneficial effect of detection method of the invention is: it is simple to operate, measurement efficiency is high, can independent measurement it is each
Dielectric leakage amount at clearance fit, it is good in economic efficiency.
Detailed description of the invention
Structural schematic diagram when the embodiment first outlet that Fig. 1 is shown as valve leak detecting tool of the present invention is opened；
Structural schematic diagram when the embodiment second outlet that Fig. 2 is shown as valve leak detecting tool of the present invention is opened；
Fig. 3 is shown as the structural schematic diagram of another embodiment of valve leak detecting tool of the present invention.
Piece mark explanation
1 sleeve；
11 medium inlets；
12 first outlets；
13 second outlets；
14 media outlets；
21 bonnet,s；
22 gasket seals；
23 packing elements；
3 executing agencies；
41 spools；
42 valve rods；
51,52 simulation sealing pair；
6 pressure reducing valves；
71 control valves；
72 flowmeters.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
It should be noted that cited such as "upper", "lower", "left", "right", " centre " and " one " in this specification
Term is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, the change of relativeness or tune
It is whole, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the present invention.
Before the embodiment of the present invention is described in detail, first application environment of the invention is described.The present invention
Technology be mainly applied in valve detection equipment, be especially applied to generated when the spool of valve cooperates with each component
The detection of leakage rate at fit clearance.The present invention is to solve conventional valves leakage rate to detect using whole set equipment, device knot
Structure complexity is at high cost, and complete machine can only detect leakage total amount, can not be detected to the leakage rate at single fit clearance
Problem.
As shown in Figure 1 to Figure 3, valve leak detecting tool of the invention is especially used for for detecting valve leakage automatic inspection
41 leakage rate of spool of valve is detected, the top of spool 41 is equipped with valve rod 42.The detecting tool includes sleeve 1 and valve deck group
Part, bonnet assemblies, which cover, makes 1 inner sealing of sleeve at the top of sleeve 1, the detection for 41 leakage rate of spool provides sealed environment.Its
In, bonnet assemblies include bonnet, 21, and packing elements 23 are equipped in bonnet, 21, make filler by hold-down grid and bolt
The stabilization of component 23 is assemblied in bonnet, 21, and the upper end of valve rod 42 passes through bonnet, 21, and makes with the cooperation sealing of packing elements 23
It obtains and keeps sealing inside sleeve 1, while making valve rod 42 keep stabilization by packing elements 23, avoid shaking.The top of sleeve 1
Equipped with stepped part, stepped part is equipped with gasket seal 22, and gasket seal 22 is pushed down in the bottom of bonnet, 21, and bonnet, 21 passes through spiral shell
Bolt and sleeve 1 are locked, and by the way that stepped part is arranged, and gasket seal 22 and sealing ring are installed on step surface so that upper cover plate and
The junction of sleeve has good sealing performance, to ensure that the leakproofness of sleeve inner.
As shown in Figure 1 to Figure 3, which further includes executing agency 3, and executing agency 3 may be mounted at bonnet assemblies
On, executing agency 3 connect with the valve rod 42 stretched out at the top of bonnet assemblies, connect balancing sleeve with valve rod 42 by executing agency 3
The pressure that inside cavity medium generates spool makes and at the same time executing agency 3 applies sealing force to spool 41 by valve rod 42
It obtains spool to fit closely with sleeve lining, improves the sealing effect of simulation sealing pair.Sleeve 1 is equipped with medium inlet 11 and medium
Outlet, spool 41 is placed in sleeve 1, and cooperatively forms simulation sealing pair with 1 inner wall of sleeve.The cavity inner wall of sleeve 1, which is equipped with, to be used
In the cooperation station for cooperatively forming simulation sealing pair with spool 41, and the cooperation station be located at medium inlet and media outlet it
Between.The simulation sealing pair of formation is between medium inlet and media outlet, so that medium needs after being entered by medium inlet
It flows through corresponding simulation sealing pair to be flowed out by media outlet again, each simulation sealing pair is correspondingly arranged on media outlet, media outlet
Media discharge metrological service is installed, to realize the independent detection of each simulation sealing pair leakage rate, is installed at medium inlet
There is pressure reducing valve 6.Media discharge metrological service includes control valve 71, and the evacuation port of control valve 71 is equipped with flowmeter 72, control valve 71
It can be Pneumatic valve, or pilot operated valve device, medium can be liquid medium, or gaseous medium.When medium is liquid
Medium, control valve can be pilot operated valve device；When medium is gaseous medium, control valve can use manual two-bit triplet Pneumatic valve,
One of valve port is connect with media outlet, another valve port connects suspended body flowmeter, another valve port is evacuation port, is connected with atmosphere
Logical, executing agency 3 applies downward setting thrust, and pressure reducing valve, which sets pressure, to be 0.35MPa, and gas medium is by medium inlet
Input, adjustment control valve make media outlet be in suspended body flowmeter connected state, to measure corresponding simulation sealing pair
Practical leakage rate.
As depicted in figs. 1 and 2, in one embodiment, spool 41 forms simulation sealing pair 51 with 1 inner wall of sleeve and simulation is close
Secondary 52 the two sealing pairs are sealed, the quantity of media outlet is identical with the simulation quantity of sealing pair and is correspondingly arranged, media outlet packet
The second outlet 13 for being correspondingly arranged first outlet 12 with simulation sealing pair 52 and being correspondingly arranged with simulation sealing pair 51 is included, medium enters
Mouth is between first outlet 12 and second outlet 13.As shown in Figure 1, when the leakage rate of measurement simulation sealing pair 52, first
Outlet 12 is opened, and second outlet 13, which is closed, is in dissengaged positions, i.e. simulation sealing pair 51 is fully sealed and does not generate leakage, medium by
Medium inlet 11 enters in sleeve 1, is discharged after simulating sealing pair 52 by first outlet 12, first outlet 12 is in and flow
Connected state is counted, by the media discharge metrological service measuring medium discharge amount at first outlet 12, to measure simulation sealing
The leakage rate of pair 52.As shown in Fig. 2, first outlet 12 is closed in cutting shape when the leakage rate of measurement simulation sealing pair 51
State, i.e., simulation sealing pair 52, which is fully sealed, does not generate leakage, and second outlet 13 is opened, and medium enters sleeve 1 by medium inlet 11
It is interior, be discharged after simulating sealing pair 51 by second outlet 13, second outlet 13 be in flowmeter connected state, pass through second
The media discharge metrological service measuring medium discharge amount at 13 is exported, to measure the leakage rate of simulation sealing pair 51.
As shown in figure 3, in another embodiment, the valve line and 1 inner wall of sleeve of spool 41 form a simulation sealing pair
51, the cooperation station in sleeve 1 can be step surface, and step surface is close to form simulation with the valve line of spool sealing face contact close
Envelope is secondary, and sleeve 1 is equipped with medium inlet 11 and media outlet 14, and simulation sealing pair 51 is located at medium inlet 11 and media outlet 14
Between, medium is entered in sleeve 1 after pressure reducing valve 6 by medium inlet 11, and medium is gone out after flowing through simulation sealing pair 51 by medium
Mouth 14 is discharged, and passes through the media discharge metrological service measuring medium discharge amount at media outlet 14.
Detecting tool structure of the invention is simple, compact layout, corresponding simulation can be arranged according to different spools and seal
Pair, to realize the leakage rate at different fit clearance, detection is accurate.
Spool 41 to be measured when detection, is first installed to inside sleeve 1 by a kind of valve leak detection method of the invention, is led to
Cross upper valve cap assemblies, executing agency cooperates so that spool 41 is stable is mounted in sleeve, and sleeve inner keeps sealing state.
Spool 41 and 1 inner wall of sleeve cooperatively form simulation sealing pair, and the quantity for simulating sealing pair can be correspondingly arranged according to different valves.
Medium inlet and media outlet be set on sleeve 1, and in each media outlet install medium emission measurement mechanism, by medium by
Medium inlet injection, medium is discharged by media outlet again after flowing through simulation sealing pair, and is measured by media discharge metrological service
The media discharge amount of corresponding media outlet.The export volume of media outlet is identical as the simulation quantity of sealing pair, and corresponds,
That is only one simulation sealing pair between a medium inlet and a media outlet, when the one of simulation sealing pair of detection
When leakage rate, outlet corresponding with other simulation sealing pairs is closed, to measure the leakage rate of single simulation sealing pair.
The detection method is simple to operate, applied widely, convenient for being measured between the cooperation of different spool differences according to demand
Leakage rate at gap reduces the measurement cost of leakage rate so that the design for valve hole part provides accurately data supporting.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (10)
1. a kind of valve leak detecting tool is used for spool leak detection, is equipped with valve rod at the top of spool, it is characterised in that: packet
Sleeve and bonnet assemblies are included, the bonnet assemblies, which cover, seals sleeve inner at the top of sleeve, and the sleeve is equipped with medium
Entrance and media outlet, the spool are placed in sleeve, and cooperatively form simulation sealing pair, the simulation sealing with sleeve lining
For pair between medium inlet and media outlet, the media outlet is equipped with media discharge metrological service.
2. a kind of valve leak detecting tool according to claim 1, it is characterised in that: it further include executing agency, it is described
Executing agency is mounted on bonnet assemblies, and the executing agency connect with the valve rod stretched out at the top of bonnet assemblies, and passes through valve rod
Apply sealing force to spool.
3. a kind of valve leak detecting tool according to claim 1, it is characterised in that: the media discharge metrological service
Including control valve, the evacuation port of the control valve is equipped with flowmeter.
4. a kind of valve leak detecting tool according to claim 3, it is characterised in that: the control valve be Pneumatic valve or
Pilot operated valve device.
5. a kind of valve leak detecting tool according to claim 1, it is characterised in that: the cavity inner wall of the sleeve is set
Have a cooperation station for cooperatively forming simulation sealing pair with spool, and the cooperation station be located at medium inlet and media outlet it
Between.
6. a kind of valve leak detecting tool according to claim 1, it is characterised in that: the bonnet assemblies include upper valve
It covers, packing elements is installed in the bonnet, the valve rod passes through bonnet, and with packing elements cooperation sealing so that sleeve
Inner sealing.
7. a kind of valve leak detecting tool according to claim 6, it is characterised in that: the top of the sleeve is equipped with rank
Terraced portion, the stepped part are equipped with gasket seal, and the bottom of the bonnet, is pushed down gasket seal and locked with sleeve.
8. a kind of valve leak detecting tool according to claim 1, it is characterised in that: the media outlet includes first
Outlet and second outlet, the medium inlet is between first outlet and second outlet.
9. a kind of valve leak detection method, it is characterised in that: spool to be measured is installed to sleeve inner, and is matched with sleeve lining
It closes and forms simulation sealing pair, medium inlet and media outlet are set on sleeve, and in media outlet install medium emission measurement
Mechanism is injected medium by medium inlet, and medium is discharged by media outlet again after flowing through simulation sealing pair, and passes through media discharge
Metrological service measures the media discharge amount of corresponding media outlet.
10. a kind of valve leak detection method according to claim 9, it is characterised in that: the outlet of the media outlet
Quantity is identical as the simulation quantity of sealing pair, and corresponds, will be with when the leakage rate of the one of simulation sealing pair of detection
The corresponding outlet of other simulation sealing pairs is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910249991.XA CN109883627A (en) | 2019-03-29 | 2019-03-29 | A kind of valve leak detecting tool and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910249991.XA CN109883627A (en) | 2019-03-29 | 2019-03-29 | A kind of valve leak detecting tool and detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109883627A true CN109883627A (en) | 2019-06-14 |
Family
ID=66935212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910249991.XA Pending CN109883627A (en) | 2019-03-29 | 2019-03-29 | A kind of valve leak detecting tool and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109883627A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837311A (en) * | 2014-02-20 | 2014-06-04 | 广东鸿图科技股份有限公司 | Method and device for detecting internal leakage of multi-cavity valve |
| CN203809731U (en) * | 2013-10-30 | 2014-09-03 | 无锡市亚迪流体控制技术有限公司 | Sleeve control valve |
| CN105312898A (en) * | 2015-11-24 | 2016-02-10 | 中国矿业大学 | Mechanical device and assembling method for automatic square ball valve assembling system |
| CN106248317A (en) * | 2016-08-20 | 2016-12-21 | 无锡鹰贝精密轴承有限公司 | Spool air-tightness detection method |
| CN109470429A (en) * | 2018-11-29 | 2019-03-15 | 秦飞 | A kind of PE ball valve detection device |
| CN109489912A (en) * | 2018-12-08 | 2019-03-19 | 浙江大学台州研究院 | Spool tries water air tightness detection device |
-
2019
- 2019-03-29 CN CN201910249991.XA patent/CN109883627A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203809731U (en) * | 2013-10-30 | 2014-09-03 | 无锡市亚迪流体控制技术有限公司 | Sleeve control valve |
| CN103837311A (en) * | 2014-02-20 | 2014-06-04 | 广东鸿图科技股份有限公司 | Method and device for detecting internal leakage of multi-cavity valve |
| CN105312898A (en) * | 2015-11-24 | 2016-02-10 | 中国矿业大学 | Mechanical device and assembling method for automatic square ball valve assembling system |
| CN106248317A (en) * | 2016-08-20 | 2016-12-21 | 无锡鹰贝精密轴承有限公司 | Spool air-tightness detection method |
| CN109470429A (en) * | 2018-11-29 | 2019-03-15 | 秦飞 | A kind of PE ball valve detection device |
| CN109489912A (en) * | 2018-12-08 | 2019-03-19 | 浙江大学台州研究院 | Spool tries water air tightness detection device |
Non-Patent Citations (1)
| Title |
|---|
| 郑长松 等: ""液压滑阀配合间隙含颗粒油液的泄漏特性研究"", 《液压与气动》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107036769B (en) | It is a kind of for calibrating the system and method for different probe gas vacuum leak leak rates | |
| CN105004663B (en) | A kind of gas cylinder volume expansion device for accurately measuring | |
| CN102928570B (en) | Sealing device for gas-containing coal sample used under triaxial compression experiment conditions | |
| CN102346088B (en) | Leakage detection method for helium mass spectrum with low helium filling concentration | |
| CN104215290B (en) | Differential pressure type volume measurement method | |
| CN205352643U (en) | Solenoid valve leak testing device | |
| CN110207975A (en) | A kind of adjusting of safety valve pressure and package seal checker and method | |
| CN206618449U (en) | Multi-phase flowmeter pressure taking structure under water | |
| CN109883627A (en) | A kind of valve leak detecting tool and detection method | |
| CN201269771Y (en) | Non-leakage air flow rate calibration device by sound speed nozzle method | |
| CN202748203U (en) | Automobile air inlet system component integrated testing apparatus | |
| CN203232008U (en) | Transformer oil pointer oil simulator adopting built-in film structure | |
| CN208751811U (en) | Test device for air tightness | |
| CN206876347U (en) | The internal combustion engine cylinders leakage testing device of temperature-compensating can be carried out in real time | |
| CN207231557U (en) | A kind of bidirectional flow plug-in type AB symmetrical flowmeters | |
| CN215178450U (en) | Detection apparatus for graphite bipolar plate runner crackle | |
| CN209446217U (en) | It is a kind of that the device of electrical equipment SF6 gas leakage standard source is provided | |
| CN206056697U (en) | A kind of G2.5 diaphragm gas meters | |
| CN211373968U (en) | Balanced sealing washer test fixture | |
| CN205922362U (en) | Metering device of milk liquid | |
| CN109459184B (en) | Device for providing SF6 gas leakage standard source of electrical equipment and using method thereof | |
| CN209589183U (en) | A kind of crushing testing agency for canister | |
| CN208921380U (en) | DBB valve leak detecting device | |
| CN203964997U (en) | A kind of many bell jar type gas flowmeters calibrating installation | |
| CN207705349U (en) | A kind of device for detecting graphite bi-polar plate tightness |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190614 |