CN108225682A - A kind of valve secondary sealing detection device and detection method - Google Patents
A kind of valve secondary sealing detection device and detection method Download PDFInfo
- Publication number
- CN108225682A CN108225682A CN201810321272.XA CN201810321272A CN108225682A CN 108225682 A CN108225682 A CN 108225682A CN 201810321272 A CN201810321272 A CN 201810321272A CN 108225682 A CN108225682 A CN 108225682A
- Authority
- CN
- China
- Prior art keywords
- valve
- pressure
- bubble
- secondary sealing
- observation
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
- G01M3/08—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds
- G01M3/086—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds for valves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2876—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The present invention relates to a kind of valve secondary sealing detection device and detection methods.Described device includes monitor station, leakage observation ward, pressure vacuum gauge, pressure retaining valve and vacuum pump；Monitor station is connected by pipeline with leakage observation ward；Tested side valve pair is installed on monitor station and passes through monitor station air entry to be connected with pipeline；Bubble in leakage observation ward is housed and observes liquid, and the liquid level of bubble observation liquid is higher than the observation case air entry formed in pipeline with leaking observation ward junction；Leakage observation ward is connected by pressure meter three-way connector with pressure vacuum gauge and pressure retaining valve respectively, and the liquid level of bubble observation liquid is less than the observation case exhaust outlet and monitor station air entry formed in leakage observation ward with pressure meter three-way joint；Pressure retaining valve is connected with vacuum pump.Valve secondary sealing detection device and detection method using the present invention can improve sealing propertytest accuracy rate, detection efficiency and the examination criteria of valve for oil-well pump pair, improve valve secondary sealing property amount.
Description
Technical field
The present invention relates to oil exploration equipments to detect correlative technology field, concretely relates to a kind of valve secondary sealing inspection
Survey device and detection method.
Background technology
At present, oil well pump used in oil-gas mining field will use two sets or two sets or more of valve ball and valve seat, structure
Oil inlet and delivery valve assembly into oil well pump, valve ball, valve seat are the core component of oil well pump, while are vulnerable parts.
It is to be sealed by the band together being ground on valve seat between valve ball and valve seat.Valve ball and seat leakage
Failure is the most important failure mode of oil well pump.
Oil well pump be mounted on underground oil wells in crude oil extraction, operating mode very severe, if when oil well pump assemble, valve ball with
The poor sealing of valve seat has slight leakage without detected, and is used once being installed in oil well, valve ball and valve seat
Leakproofness will accelerate to fail, and lead to oil well pump initial failure, workover treatment must be carried out in advance by such case occur, be beaten
It pulls oil well pump out to be replaced, workover treatment and loss caused by when well workover stops production are very big.
Valve ball and valve seat are newly pumped with oil well pump before assembling and repairing pump assembling before manufacture, will the inspection of 100% being sealed property
It surveys.
Conventional detection device and method are vacuumized with vacuum pump at present, after reaching a higher vacuum pressure,
Provide the pressurize regular hour, then whether having a pressure drop by observing vacuum pressure meter reading judges whether leakproofness closes
The defects of lattice, this method is cannot intuitively to observe valve ball and valve base sealing with the presence or absence of leakage, due to pressure vacuum gauge
Precision and indicator sensitivity limitation, when there is minor leakage, gauge hand do not reflect come or pressure gauge refer to
The amplitude of fluctuation very little of needle is not easy detected personnel and discovers before the deadline.And pipeline or control when this detection device
Valve processed also causes pressure gauge reading to reduce when system leaks, the erroneous judgement so as to caused by.Therefore, the detection of this detection method is accurate
True rate and detection efficiency be not high.
Invention content
For the deficiency of the prior art, the present invention provides a kind of valve secondary sealing detection device and detection methods.
The technical solution of the valve secondary sealing detection device of the present invention is as follows：
A kind of valve secondary sealing detection device, including monitor station, leakage observation ward, pressure vacuum gauge, pressure retaining valve and true
Sky pump；The monitor station is connected by pipeline with the leakage observation ward；In a state of use, it is detected side valve pair and is installed on institute
It states on monitor station and passes through monitor station air entry and be connected with the pipeline；It is observed in the leakage observation ward equipped with bubble
Liquid, and the liquid level of bubble observation liquid is higher than the observation case formed in the pipeline with the leakage observation ward junction and inhales
Gas port；The leakage observation ward is connected by pressure meter three-way connector with the pressure vacuum gauge and the pressure retaining valve respectively,
And the liquid level of the bubble observation liquid is less than what is formed in the leakage observation ward with the pressure meter three-way joint
Observe case exhaust outlet and the monitor station air entry；The pressure retaining valve is connected with the vacuum pump.
During the valve secondary sealing detection device work of the present invention, vacuum pump and pressure retaining valve, suction monitor station and valve pair are opened
At cooperation, pipeline and leakage observe indoor air, in air flow through leakage observation ward by observe case air entry into
When entering bubble observation liquid, bubble is generated, after bubble overflows observation liquid, then the discharge of case exhaust outlet is connect by pressure meter three-way from
Head, pressure retaining valve, then be discharged in ambient air by vacuum pump；When the pressure value of pressure vacuum gauge reaches required value, close
Pressure retaining valve, system pressurize, if do not leaked between valve ball and valve seat, the observation case suction inlet being immersed in bubble observation liquid does not have
There is bubble generation, once valve ball and valve seat have slight leakage, observation case air entry just has a small amount of bubble and generates, it is easy to quilt
It observes；And due to the relatively not high limitation of the accuracy and sensitivity of pressure vacuum gauge, list index during only slight leakage
There are no starting to deflect, when leakage rate reaches a certain level, bubbles volume reaches a certain level, and gauge hand just starts apparent inclined
Turn, also can observe whether there is leakage by the pressure change of pressure gauge at this time.Since leakage bubble appears in gauge hand
Before deflection, so for the secondary micro- leakage that gauge hand is insufficient to allow to deflect of valve, it can also be observed by leaking bubble
It arrives.
Therefore, by using the valve secondary sealing detection device of the present invention, valve for oil-well pump secondary (valve ball and valve can be improved
Seat) sealing propertytest accuracy rate, detection efficiency and examination criteria, improve valve secondary sealing property amount.
According to a preferred embodiment, the valve secondary sealing detection device further includes relief valve；The relief valve
It is connected by blowdown line with the air inlet three-way connection being set on the pipeline；Alternatively, the valve secondary sealing detection dress
It puts and further includes check valve；The check valve is arranged on the pipeline.
By setting relief valve, when detecting larger specification valve pair, since pull of vacuum is very big, it is not easy to take from monitor station
Lower valve ball and valve seat, at this point, after opening relief valve enters by air, so that it may easily remove valve ball and valve seat.
According to a preferred embodiment, the valve secondary sealing detection device further includes cabinet；On the cabinet
It is formed with the first platform and the second platform, and first position of platform is higher than second platform so that the cabinet is in
It is step-like；The monitor station is set on first platform；The leakage observation ward and the pressure retaining valve are set to described the
On two platforms；The vacuum pump is set in the cabinet.
According to a preferred embodiment, the power switch of the vacuum pump is set on second platform, is led to
Conducting wire is crossed with the vacuum pump to be connected；The vacuum-pump power supply line for being connected with attaching plug of the vacuum pump is from the cabinet side
Portion is pierced by.
According to a preferred embodiment, the relief valve in the valve secondary sealing detection device is set to the cabinet
Side；The relief valve is connected by blowdown line with the air inlet three-way connection being set on the pipeline.
According to a preferred embodiment, the leakage observation ward is transparent sealed cylindrical or transparent rectangular close
Joint sealing.
According to a preferred embodiment, the bubble observation liquid is transparency liquid.
The technical solution of the valve secondary sealing detection method of the present invention is as follows：
A kind of valve secondary sealing detection method, includes the following steps：
S1：Side valve pair to be checked is installed to the monitor station of valve secondary sealing detection device as described above；
S2：The vacuum pump and pressure retaining valve in the valve secondary sealing detection device are opened, monitor station is extracted and coordinates with valve pair
Indoor air is observed in place, pipeline and leakage；Then it is detected by step S3 or S4；
S3：Carry out low pressure seal detection：When pressure vacuum gauge pressure value is reduced to -0.01 to -0.02MPa, close
Pressure retaining valve closes vacuum pump, pressurize 3-5 seconds, while the valve ball in arbitrary rotation valve pair, checks whether observation case air entry has gas
Bubble overflows；It is determined as qualification if no bubble overflows, if there have bubble spilling to be determined as to be unqualified；
S4：Carry out high-pressure tightness detection：When pressure vacuum gauge pressure value is reduced to -0.065 to -0.085MPa, close
Pressure retaining valve is closed, vacuum pump, pressurize 3-5 seconds, while the valve ball in arbitrary rotation valve pair is closed, checks whether observation case air entry has
Bubble overflows；It is determined as qualification if no bubble overflows, if there have bubble spilling to be determined as to be unqualified.
According to a preferred embodiment, in the step S3, check whether observation case air entry has bubble to overflow
Also need whether observation pressure vacuum gauge has pressure reduction while going out；If no bubble overflows and the pressure of pressure vacuum gauge does not have
There is reduction, be then determined as qualification, if there is bubble to overflow the pressure reduction with pressure vacuum gauge, be determined as unqualified.
According to a preferred embodiment, in the step S4, check whether observation case air entry has bubble to overflow
Also need whether observation pressure vacuum gauge has pressure reduction while going out；If no bubble overflows and the pressure of pressure vacuum gauge does not have
There is reduction, be then determined as qualification, if there is bubble to overflow the pressure reduction with pressure vacuum gauge, be determined as unqualified.
Compared with prior art, valve secondary sealing detection device of the invention and detection method have the advantages that：
1. the present invention valve secondary sealing detection device and detection method to observe bubble to determine whether based on gas leakage, with
The pressure drop of observation pressure vacuum gauge judges whether supplemented by gas leakage, since the observation leakage bubble ratio observation pressure gauge number of degrees are more straight
It sees, is more accurate, therefore erroneous judgement can be reduced, and observing that leak the bubble used time shorter, detection efficiency can be improved.
2. the valve secondary sealing detection device system pipes of the present invention are short out, without controls such as complicated solenoid valve, relays
System, simple in structure, failure rate is low, and small in volume is portable, is detected convenient for oil well pump maintenance sites.
3. the low pressure detection process of the valve secondary sealing detection method of the present invention, can preferably detect valve ball and valve base sealing
The overall targets such as profile tolerance, the surface roughness of band.
In conclusion valve secondary sealing detection device using the present invention and detection method are insufficient to allow pressure for valve pair
Micro- leakage of power list index deflection, can also be observed, therefore examination criteria higher by leaking bubble, valve can greatly improved
The leakproofness quality of ball and valve seat.
Description of the drawings
Fig. 1 is the structure diagram of valve secondary sealing detection device of the present invention.
Reference numerals list
1- cabinets, the first platforms of 101-, the second platforms of 102-, 2- monitor stations, 3- leakages observation ward, 4- bubbles observation liquid,
5- pressure vacuum gauges, 6- pressure meter three-way connectors, 7- pressure retaining valves, 8- power switches, 9- conducting wires, 10- vacuum pumps, 11- vacuum pumps
Power cord, 12- air inlet three-way connections, 13- relief valves, 14- pipelines, 15- monitor station air entries, 16- observation case air entries, 17-
Observe case exhaust outlet, 18- leakage bubbles, 19- valve balls, 20- valve seats, 21- blowdown lines.
Specific embodiment
The valve secondary sealing detection device of the present invention is described in detail below in conjunction with the accompanying drawings.
Fig. 1 is the structure diagram of the valve secondary sealing detection device of the present embodiment.It illustrates valve secondary sealings of the present invention
A kind of preferred embodiment of property detection device.
As shown in Figure 1, a kind of valve secondary sealing detection device, including monitor station 2, leakage observation ward 3, pressure vacuum gauge
5th, pressure retaining valve 7 and vacuum pump 10.
Monitor station 2 is connected by pipeline 14 with leakage observation ward 3.Preferably, leakage observation ward 3 justifies for transparent sealing
Cylinder or transparent quad seal case.
In a state of use, it is installed on monitor station 2 by the tested side valve pair that valve ball 19 and valve seat 20 are formed and passes through inspection
Scaffold tower air entry 15 is connected with pipeline 14.Specifically, the valve seat 20 in tested side valve pair is mounted on monitor station 2, pipeline 14
It is connected by monitor station air entry 15 with valve seat 20 so that monitor station can pass through pipeline with the air at valve ball and valve seat cooperation
14 are extracted.
In leakage observation ward 3 liquid 4 is observed equipped with bubble.Preferably, bubble observation liquid 4 is transparency liquid, as transparent
Lubricating oil.And the liquid level of bubble observation liquid 4 is higher than the observation case air entry formed in pipeline 14 with leaking 3 junction of observation ward
16。
Leakage observation ward 3 is connected by pressure meter three-way connector 6 with pressure vacuum gauge 5 and pressure retaining valve 7 respectively.And gas
The liquid level of bubble observation liquid 4 be less than the observation case exhaust outlet 17 that is formed in leakage observation ward 3 and 6 junction of pressure meter three-way connector and
Monitor station air entry 15.Pressure retaining valve 7 is connected with vacuum pump 10.
Further, valve secondary sealing detection device further includes relief valve 13.Relief valve 13 is by blowdown line 21 with setting
The air inlet three-way connection 12 being placed on pipeline 14 is connected.
Further, valve secondary sealing detection device further includes cabinet 1.
The first platform 101 and the second platform 102 are formed on cabinet 1, and 101 position of the first platform is flat higher than second
Platform 102 so that cabinet 1 is in step-like.
Monitor station 2 is set on the first platform 101.Leakage observation ward 3 and pressure retaining valve 7 are set on the second platform 102.Very
Sky pump 10 and pipeline 14 are set in cabinet 1.The power switch 8 of vacuum pump 10 is set on the second platform 102, passes through conducting wire
9 are connected with vacuum pump 10；The vacuum-pump power supply line 11 for being connected with attaching plug of vacuum pump 10 is pierced by from 1 side of cabinet.
Relief valve 13 in valve secondary sealing detection device is set to 1 side of cabinet；And relief valve 13 passes through relief tube
Line 21 is connected with the air inlet three-way connection 12 being set on pipeline 14.
By setting relief valve, when detecting larger specification valve pair, since pull of vacuum is very big, it is not easy to take from monitor station
Lower valve ball and valve seat, at this point, after opening relief valve enters by air, so that it may easily remove valve ball and valve seat.
Alternatively, pipeline can be located on pipeline 14 and leak one check valve of junction setting of observation ward 3, to prevent
When removing valve ball and valve seat, observation liquid is overflowed from the monitor station air entry on monitor station.
The valve secondary sealing detection device course of work of the present invention is as follows：
During work, vacuum-pump power supply switch is opened, vacuum pump work opens pressure retaining valve；Vacuum pump starts to aspirate monitor station
With at valve pair cooperation, pipeline and leakage observe indoor air, in air flow through leakage observation ward and inhaled by observing case
When gas port enters bubble observation liquid, bubble is generated, after bubble overflows observation liquid, then case exhaust outlet is discharged from, passes through pressure
Table three-way connection, pressure retaining valve, then be discharged in ambient air by vacuum pump；When the pressure value of pressure vacuum gauge reaches required value
When, close pressure retaining valve, system pressurize, if do not leaked between valve ball and valve seat, be immersed in bubble observation liquid in observation case
Suction inlet is not revealed bubble 18 and is generated, once valve ball and valve seat have slight leakage, observation case air entry just has to be let out on a small quantity
The bubble 18 that leaks generates, it is easy to be observed.
And due to the relatively not high limitation of the accuracy and sensitivity of pressure vacuum gauge, list index during only slight leakage
There are no starting to deflect, when leakage rate reaches a certain level, bubbles volume reaches a certain level, and gauge hand just starts apparent inclined
Turn, also can observe whether there is leakage by the pressure change of pressure gauge at this time.
The valve secondary sealing detection device of the present invention to observe bubble to determine whether based on gas leakage, to observe vacuum pressure
The pressure drop of table judges whether supplemented by gas leakage, since the observation leakage bubble ratio observation pressure gauge number of degrees are more intuitive, more accurate,
Erroneous judgement can be reduced, and observe leakage the bubble used time it is shorter, detection efficiency can be improved.In addition, the valve secondary sealing of the present invention
Property detection device system pipes it is short out, without complicated solenoid valve, relay dispatch control system is simple in structure, and failure rate is low, volume
It is small light-weight, it is portable, it is detected convenient for oil well pump maintenance sites.
The present invention also provides a kind of valve secondary sealing detection methods, include the following steps：
S1：Side valve pair to be checked is installed to the monitor station of valve secondary sealing detection device as described above；
S2：Vacuum pump and pressure retaining valve in opening valve secondary sealing detection device are extracted at monitor station and valve pair cooperation, pipe
Indoor air is observed in road and leakage；Then it is detected by step S3 or S4；
S3：Carry out low pressure seal detection：When pressure vacuum gauge pressure value is reduced to -0.01 to -0.02MPa, close
Pressure retaining valve closes vacuum pump, pressurize 3-5 seconds, while the valve ball in arbitrary rotation valve pair, checks whether observation case air entry has gas
Bubble overflows；It is determined as qualification if no bubble overflows, if there have bubble spilling to be determined as to be unqualified；
S4：Carry out high-pressure tightness detection：When pressure vacuum gauge pressure value is reduced to -0.065 to -0.085MPa, close
Pressure retaining valve is closed, vacuum pump, pressurize 3-5 seconds, while the valve ball in arbitrary rotation valve pair is closed, checks whether observation case air entry has
Bubble overflows；It is determined as qualification if no bubble overflows, if there have bubble spilling to be determined as to be unqualified.
Preferably, in step s3, it can also be observed while checking whether observation case air entry has bubble spilling true
Whether hollow pressure gauge has pressure reduction；If overflowing without bubble and the pressure of pressure vacuum gauge not reducing, it is judged to closing
Lattice if there is bubble to overflow the pressure reduction with pressure vacuum gauge, are determined as unqualified.
Preferably, in step s 4, observation vacuum is also needed while checking whether observation case air entry has bubble spilling
Whether pressure gauge has pressure reduction；If being overflowed without bubble and the pressure of pressure vacuum gauge not reducing, it is determined as qualification,
If there is bubble to overflow the pressure reduction with pressure vacuum gauge, it is determined as unqualified.
The valve secondary sealing detection method of the present invention to observe bubble to determine whether based on gas leakage, to observe vacuum pressure
The pressure drop of table judges whether supplemented by gas leakage, since the observation leakage bubble ratio observation pressure gauge number of degrees are more intuitive, more accurate,
Erroneous judgement can be reduced, and observe leakage the bubble used time it is shorter, detection efficiency can be improved.
And the low pressure detection process of the valve secondary sealing detection method of the present invention, can preferably detect valve ball and valve seat is close
Seal the overall targets such as profile tolerance, the surface roughness of band.
In conclusion valve secondary sealing detection device using the present invention and detection method are insufficient to allow pressure for valve pair
Micro- leakage of power list index deflection, can also be observed, therefore examination criteria higher by leaking bubble, valve can greatly improved
The leakproofness quality of ball and valve seat.
It should be noted that this specification disclosed in all features disclosed all methods or in the process the step of,
Other than mutually exclusive feature and/or step, it can combine in any way.
In addition, above-mentioned specific embodiment is exemplary, those skilled in the art can opening in the disclosure of invention
It gives and finds out various solutions, and these solutions also belong to disclosure of the invention range and fall into the protection of the present invention
Within the scope of.It will be understood by those skilled in the art that description of the invention and its attached drawing be it is illustrative and not form to power
The limitation of profit requirement.Protection scope of the present invention is limited by claim and its equivalent.
Claims (10)
1. a kind of valve secondary sealing detection device, which is characterized in that it includes monitor station (2), leakage observation ward (3), vacuum pressure
Power table (5), pressure retaining valve (7) and vacuum pump (10)；
The monitor station (2) is connected by pipeline (14) with the leakage observation ward (3)；In a state of use, it is detected side valve
Pair is installed on the monitor station (2) and passes through monitor station air entry (15) to be connected with the pipeline (14)；
Equipped with bubble observation liquid (4) in the leakage observation ward (3), and the liquid level of bubble observation liquid (4) is higher than
The observation case air entry (16) that the pipeline (14) is formed with described leakage observation ward (3) junction；
It is described leakage observation ward (3) by pressure meter three-way connector (6) respectively with the pressure vacuum gauge (5) and the pressure retaining valve
(7) it is connected, and the liquid level of bubble observation liquid (4) is less than in the leakage observation ward (3) and the pressure meter three-way
The observation case exhaust outlet (17) and the monitor station air entry (15) that connector (6) junction is formed；
The pressure retaining valve (7) is connected with the vacuum pump (10).
2. valve secondary sealing detection device according to claim 1, which is characterized in that the valve secondary sealing detection device
Further include relief valve (13)；The relief valve (13) passes through blowdown line (21) and the air inlet three being set on the pipeline (14)
Pass joint (12) is connected；
Alternatively, the valve secondary sealing detection device further includes check valve；The check valve is arranged on the pipeline.
3. valve secondary sealing detection device according to claim 1, which is characterized in that the valve secondary sealing detection device
Further include cabinet (1)；
The first platform (101) and the second platform (102), and first platform (101) position are formed on the cabinet (1)
It puts higher than second platform (102) so that the cabinet (1) is in step-like；
The monitor station (2) is set on first platform (101)；The leakage observation ward (3) and the pressure retaining valve (7) are set
It is placed on second platform (102)；The vacuum pump (10) is set in the cabinet (1).
4. valve secondary sealing detection device according to claim 3, which is characterized in that the power supply of the vacuum pump (10) is opened
It closes (8) to be set on second platform (102), be connected by conducting wire (9) with the vacuum pump (10)；
The vacuum-pump power supply line (11) for being connected with attaching plug of the vacuum pump (10) is pierced by from the cabinet (1) side.
5. valve secondary sealing detection device according to claim 3, which is characterized in that the valve secondary sealing detection device
In relief valve (13) be set to the cabinet (1) side；The relief valve (13) is by blowdown line (21) and is set to institute
The air inlet three-way connection (12) stated on pipeline (14) is connected.
6. the valve secondary sealing detection device according to one of claim 1 to 5, which is characterized in that the leakage observation ward
(3) it is transparent sealed cylindrical or transparent quad seal case.
7. the valve secondary sealing detection device according to one of claim 1 to 5, which is characterized in that the bubble observes liquid
(4) it is transparency liquid.
8. a kind of valve secondary sealing detection method, which is characterized in that the valve secondary sealing detection method includes the following steps：
S1：Side valve pair to be checked is installed to the monitor station of the valve secondary sealing detection device as described in one of claim 1 to 7
On；
S2：The vacuum pump and pressure retaining valve in the valve secondary sealing detection device are opened, is extracted at monitor station and valve pair cooperation, pipe
Indoor air is observed in road and leakage；Then it is detected by step S3 or S4；
S3：Carry out low pressure seal detection：When pressure vacuum gauge pressure value is reduced to -0.01 to -0.02MPa, pressurize is closed
Valve closes vacuum pump, pressurize 3-5 seconds, while the valve ball in arbitrary rotation valve pair, checks whether observation case air entry has bubble to overflow
Go out；It is determined as qualification if no bubble overflows, if there have bubble spilling to be determined as to be unqualified；
S4：Carry out high-pressure tightness detection：When pressure vacuum gauge pressure value is reduced to -0.065 to -0.085MPa, closes and protect
Pressure valve closes vacuum pump, pressurize 3-5 seconds, while the valve ball in arbitrary rotation valve pair, checks whether observation case air entry has bubble
It overflows；It is determined as qualification if no bubble overflows, if there have bubble spilling to be determined as to be unqualified.
9. valve secondary sealing detection method according to claim 8, which is characterized in that in the step S3, check
Whether observation case air entry, which has, also needs whether observation pressure vacuum gauge has pressure reduction while bubble spilling；If it overflows without bubble
Go out and the pressure of pressure vacuum gauge does not reduce, be then determined as qualification, if there is bubble to overflow the pressure drop with pressure vacuum gauge
It is low, then it is determined as unqualified.
10. valve secondary sealing detection method according to claim 8, which is characterized in that in the step S4, check
Whether observation case air entry, which has, also needs whether observation pressure vacuum gauge has pressure reduction while bubble spilling；If it overflows without bubble
Go out and the pressure of pressure vacuum gauge does not reduce, be then determined as qualification, if there is bubble to overflow the pressure drop with pressure vacuum gauge
It is low, then it is determined as unqualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810321272.XA CN108225682A (en) | 2018-04-11 | 2018-04-11 | A kind of valve secondary sealing detection device and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810321272.XA CN108225682A (en) | 2018-04-11 | 2018-04-11 | A kind of valve secondary sealing detection device and detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108225682A true CN108225682A (en) | 2018-06-29 |
Family
ID=62657583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810321272.XA Pending CN108225682A (en) | 2018-04-11 | 2018-04-11 | A kind of valve secondary sealing detection device and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108225682A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163852A (en) * | 2018-10-23 | 2019-01-08 | 曾建成 | Bag for container oil valve detection device |
| CN109211465A (en) * | 2018-10-21 | 2019-01-15 | 扬州重科检测校准有限公司 | A kind of pressure meter three-way connector with detection mouth |
| CN110823468A (en) * | 2019-12-16 | 2020-02-21 | 中国商用飞机有限责任公司 | One-way valve failure detection device and method for detecting failure of one-way valve |
| CN111307385A (en) * | 2019-11-07 | 2020-06-19 | 浙江大学 | Airtight detection device of case |
| CN113108997A (en) * | 2021-04-12 | 2021-07-13 | 大庆隆锋机械设备制造有限公司 | Filler sealing performance detection method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201803833U (en) * | 2010-09-21 | 2011-04-20 | 徐鸿涛 | Gas leakage detector |
| CN103105275A (en) * | 2011-11-09 | 2013-05-15 | 雷双华 | Detection method of valve sealing performance |
| CN203132793U (en) * | 2013-01-04 | 2013-08-14 | 嘉兴市光泰照明有限公司 | Detection machine for air tightness of automotive head lamp |
| CN104697722A (en) * | 2013-12-05 | 2015-06-10 | 珠海格力电器股份有限公司 | Pipeline air tightness detection device |
| CN204461702U (en) * | 2015-02-05 | 2015-07-08 | 浙江海洋学院 | A kind of device for detecting sealability of pressure vessel peculiar to vessel |
| CN206876359U (en) * | 2017-03-27 | 2018-01-12 | 广东茂化建集团有限公司 | A kind of valve air-tightness automatic detection device |
| CN207964192U (en) * | 2018-04-11 | 2018-10-12 | 四川澳维采油设备有限公司 | A kind of valve secondary sealing detection device |
-
2018
- 2018-04-11 CN CN201810321272.XA patent/CN108225682A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201803833U (en) * | 2010-09-21 | 2011-04-20 | 徐鸿涛 | Gas leakage detector |
| CN103105275A (en) * | 2011-11-09 | 2013-05-15 | 雷双华 | Detection method of valve sealing performance |
| CN203132793U (en) * | 2013-01-04 | 2013-08-14 | 嘉兴市光泰照明有限公司 | Detection machine for air tightness of automotive head lamp |
| CN104697722A (en) * | 2013-12-05 | 2015-06-10 | 珠海格力电器股份有限公司 | Pipeline air tightness detection device |
| CN204461702U (en) * | 2015-02-05 | 2015-07-08 | 浙江海洋学院 | A kind of device for detecting sealability of pressure vessel peculiar to vessel |
| CN206876359U (en) * | 2017-03-27 | 2018-01-12 | 广东茂化建集团有限公司 | A kind of valve air-tightness automatic detection device |
| CN207964192U (en) * | 2018-04-11 | 2018-10-12 | 四川澳维采油设备有限公司 | A kind of valve secondary sealing detection device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211465A (en) * | 2018-10-21 | 2019-01-15 | 扬州重科检测校准有限公司 | A kind of pressure meter three-way connector with detection mouth |
| CN109163852A (en) * | 2018-10-23 | 2019-01-08 | 曾建成 | Bag for container oil valve detection device |
| CN109163852B (en) * | 2018-10-23 | 2020-06-26 | 南通联荣集团有限公司 | Container bag oil valve detection equipment |
| CN111307385A (en) * | 2019-11-07 | 2020-06-19 | 浙江大学 | Airtight detection device of case |
| CN111307385B (en) * | 2019-11-07 | 2021-07-13 | 浙江大学 | Airtight detection device of case |
| CN110823468A (en) * | 2019-12-16 | 2020-02-21 | 中国商用飞机有限责任公司 | One-way valve failure detection device and method for detecting failure of one-way valve |
| CN113108997A (en) * | 2021-04-12 | 2021-07-13 | 大庆隆锋机械设备制造有限公司 | Filler sealing performance detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108225682A (en) | A kind of valve secondary sealing detection device and detection method | |
| CN101598624B (en) | High-efficiency high pressure gas leak detection method | |
| CN104122049B (en) | A kind of high pressure airtightness testing method | |
| CN207964192U (en) | A kind of valve secondary sealing detection device | |
| CN101598623A (en) | A kind of leak detection tool that is used for the gases at high pressure leak hunting method | |
| CN103994863A (en) | Air-tight sealing detection method of threaded connection of oil casing tubes | |
| CN204128762U (en) | A kind of valve examination platform | |
| CN110486629A (en) | Air-tightness detection device and method for double fuel host gas pipeline | |
| CN104122048A (en) | High-pressure gas tightness detection system | |
| CN103649709A (en) | Leak detection device and method for checking objects for fluid tightness by means of a leak detection device | |
| CN111829735A (en) | Device and method for detecting air tightness of pipeline | |
| CN102564709A (en) | Leakage detecting method for sealing structure part | |
| CN209055285U (en) | A kind of experimental rig for examining valve high-low pressure to seal | |
| CN208607521U (en) | A kind of PLC control system of helium leak check filling recyclable device | |
| RU2693090C1 (en) | Method for determining tubing tightness in injection wells | |
| CN201532288U (en) | Leak detection seal tool used for heavy pressure gas leak detection method | |
| CN106644254A (en) | On-line maintenance method of pressure transmitter and on-line maintenance system thereof | |
| CN101598625B (en) | Tracer gas accumulator applied in high pressure gas leak detection method | |
| KR101815804B1 (en) | Individual Vacuum Consolidation Method‘s Drainage Vacuum Inspection Equipment | |
| CN212252073U (en) | GIS vacuum pumping equipment system for SF6 gas filling | |
| CN111504792B (en) | Accelerator vacuum pipeline strength testing device | |
| CN201532287U (en) | Supercharging device for tracer gas in high-pressure gas leak detection method | |
| CN208860561U (en) | A kind of pressure vessel leak detecting device | |
| TW202032510A (en) | Zero-pollution warning equipment of underground oil pipes at gas stations detecting and knowing whether there is leakage in the liquid storage tank at any time and preventing underground oil pipes from leaking | |
| CN206580740U (en) | Air supporting base station |
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 |