CN203551229U - Sealing detection device - Google Patents
Sealing detection device Download PDFInfo
- Publication number
- CN203551229U CN203551229U CN201320711133.0U CN201320711133U CN203551229U CN 203551229 U CN203551229 U CN 203551229U CN 201320711133 U CN201320711133 U CN 201320711133U CN 203551229 U CN203551229 U CN 203551229U
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- Prior art keywords
- sealing
- plug
- hole
- valve
- pressue device
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- Expired - Lifetime
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- 238000007789 sealing Methods 0.000 title claims abstract description 62
- 238000001514 detection method Methods 0.000 title abstract 5
- 238000012544 monitoring process Methods 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 abstract 8
- 238000007906 compression Methods 0.000 abstract 8
- 230000002950 deficient Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
A sealing detection device is used to detect sealing performance of a swing type check valve of a nuclear power plant. The swing type check valve comprises a valve seat with a valve chamber; the valve seat comprises an air inlet pipe and an air outlet pipe; the sealing detection device comprises a first sealing piece which fixedly cover an end part of the air inlet pipe, a second sealing piece which fixedly penetrates inside the air outlet pipe, and a first compression device and a second compression device which are respectively communicated with the air outlet pipe; the second sealing piece comprises a sealing plug and a sealing ring which is sleeved on the sealing plug; the first sealing piece is provided with a first compression hole and a second compression hole; the first compression device through the first compression hole pressurizes the valve cavity and monitors a pressure drop; the second compression device through the second compression hole pressurizes a part between the sealing plug and the sealing ring and monitors the pressure drop; and according to the two pressure drops, a leakage rate is calculated and whether an air leak happens is determined. The sealing detection device carries out the sealing detection before the cold or hot test, so as to prevent the unit from retreating caused by the unqualified sealing after the valve is in-line, and to ensure the smooth operation of the cold and hot tests.
Description
Technical field
The utility model relates to the sealing test of nuclear power station valve, more particularly, relates to a kind of package seal checker detecting for the sealing of the swing check valve to nuclear power station.
Background technology
In the power station debug phase, according to the requirement of < < nuclear-safety-related system and equipment routine test supervision outline > >, must carry out impermeability test to related valve.
The valve seal test that there is a requirement present stage to supervision outline could judge that whether its sealing is qualified while only doing experiment in cold examination or hot examination stage, test underproof valve Disintegration overhaul after off-test, Disintegration overhaul adopts grinding conventionally, blue oil test mode, and the judgement of repairing quality quality is subject to the restriction of maintainer's level of skill to a great extent, especially at present entry, in high professional qualification maintainer's shortcoming situation, once error in judgement, to completing back dress, by system, at thread test, could verify that underproof valve will move back repair based on condition of component, belonging to low-water level valve even wants can overhaul after discharging, can have a strong impact on carrying out smoothly of debugging.
Therefore, in prior art not for carrying out sealing propertytest before cold examination or heat examination or the valve after repairing being carried out to the specific purpose tool of sealing propertytest, can not quantitatively judge valve seal whether qualified, avoid people because of erroneous judgement and guarantee cold examination or the carrying out smoothly of heat examination.
Therefore, there is defect in prior art, needs to improve.
Utility model content
The technical problems to be solved in the utility model is, above-mentioned not for carrying out sealing propertytest before cold examination or heat examination or the valve after repairing being carried out to the specific purpose tool of sealing propertytest for prior art, can not quantitatively judge valve seal whether qualified, avoid people because of erroneous judgement and guarantee cold examination or the defect of carrying out smoothly of heat examination, a kind of package seal checker is provided.
The utility model solves the technical scheme that its technical matters adopts: construct a kind of package seal checker, sealing for the swing check valve to nuclear power station detects, described swing check valve comprises the valve seat with valve pocket, described valve seat comprises draft tube and escape pipe, described escape pipe inner passage comprises leader, described package seal checker comprises that fixed cap is located at the first seal of described draft tube end, fixedly be located in described escape pipe and be positioned at the second seal of described leader, the first pressue device being connected with described escape pipe respectively and the second pressue device,
Described the second seal comprises the sealing-plug matching with described leader and is set in the sealing ring on described sealing-plug;
On described the first seal, be provided with for connecting described the first pressue device with the first pressurization hole to described valve pocket pressurization with for connecting described the second pressue device with the second pressurization hole to pressurizeing between described sealing-plug and sealing ring, described the first pressue device is for monitoring the pressure drop of described valve pocket, and described the second pressue device is for monitoring the pressure drop between described sealing-plug and sealing ring.
Package seal checker described in the utility model, wherein, the cylindrical projections matching with described draft tube inner passage that described the first seal comprises disc structure and forms along described disc structure undergauge.
Package seal checker described in the utility model, wherein, the region that described disc structure contacts with described draft tube end offer two axisymmetric about described disc structure center, for the first mounting hole of erection bolt, described the first seal is fixedly mounted on described draft tube end by described bolt.
Package seal checker described in the utility model, wherein, described leader is tubular, described escape pipe inner passage also comprises the tapered mouth away from described leader central shaft that is positioned at described leader upstream, and described package seal checker also comprises the round table-like longitudinal balance part that is arranged on described mouth and matches with described mouth.
Package seal checker described in the utility model, wherein, described package seal checker also comprises two web members, described sealing-plug offers two axisymmetric mounting grooves in the center about described sealing-plug towards the sidewall of described longitudinal balance part, described longitudinal balance part axially offers two second mounting holes corresponding with described mounting groove along described leader, and the two ends of each described web member are plugged on respectively in corresponding described mounting groove and the second mounting hole.
Package seal checker described in the utility model, wherein, the circumferential side wall of described sealing-plug offers the annular mounting groove matching with described sealing ring, and described sealing-plug offers the second through hole being connected with described annular mounting groove vertically towards the sidewall of described longitudinal balance part
Described longitudinal balance part offers the first through hole vertically, and described the second pressue device is connected to described the second through hole after accessing described the second pressurization hole after passing described the first through hole by wireway.
Package seal checker described in the utility model, wherein, the bottom of described annular mounting groove radially offers air channel along described sealing-plug, and described the second through hole is communicated to described air channel.
Implement package seal checker of the present utility model, there is following beneficial effect: package seal checker of the present utility model comprises the first seal, the second seal and the first pressue device and the second pressue device that are connected with the escape pipe of swing check valve respectively, the first pressue device pressurizes to valve pocket, the second pressue device pressurizes between sealing-plug and sealing ring, thereby the slip that can calculate detected swing check valve by monitoring respectively the pressure drop of the first pressue device and the second pressue device judges whether gas leakage, utilize this pick-up unit, can before cold examination or heat examination, carry out sealing propertytest or the valve after repairing be carried out to sealing propertytest, after avoiding valve online, because sealing the defective unit that causes, drop back, guarantee carrying out smoothly of cold examination and heat examination.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the general assembly drawing of the preferred embodiment of the utility model package seal checker;
Fig. 2 is the cut-open view of the first seal in Fig. 1;
Fig. 3 A is the vertical view of the sealing-plug in Fig. 1;
Fig. 3 B is the cut-open view of the sealing-plug in Fig. 1;
Fig. 4 is the vertical view of the longitudinal balance part in Fig. 1.
Embodiment
The utility model is in order to solve in prior art not for carrying out sealing propertytest before cold examination or heat examination or the valve after repairing being carried out to the specific purpose tool of sealing propertytest, can not quantitatively judge valve seal whether qualified, avoid people because of erroneous judgement and guarantee cold examination or the defect of carrying out smoothly of heat examination, a kind of package seal checker is provided.
Package seal checker of the present utility model is by the first seal, the second seal seals whole swing check valve to be detected, then by two pressue devices, to valve pocket with between sealing-plug and sealing ring, pressurize respectively, thereby judge whether gas leakage by monitoring respectively the slip that this two parts pressure drop can calculate detected swing check valve, utilize this pick-up unit, can before cold examination or heat examination, carry out sealing propertytest or the valve after repairing be carried out to sealing propertytest, after avoiding valve online, because sealing the defective unit that causes, drop back, guarantee carrying out smoothly of cold examination and heat examination.
For technical characterictic of the present utility model, object and effect being had more clearly, understand, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
Fig. 1 is the general assembly drawing of the preferred embodiment of the utility model package seal checker;
Package seal checker of the present utility model, sealing for the swing check valve to nuclear power station detects, swing check valve comprises the valve seat with valve pocket, valve seat comprises draft tube 1 and escape pipe 2, escape pipe 2 inner passages comprise the leader 3 that is tubular and the tapered mouth 4 away from leader 3 central shafts that is positioned at leader 3 upstreams, and the leader 3 of tubular can be columnar.Package seal checker comprises that fixed cap is located at the first seal 10 of draft tube 1 end, is fixedly located in escape pipe 2 and is positioned at the second seal 20 of leader 3, the first pressue device 5 and the second pressue device 5 ' that are connected with escape pipe 2 respectively.
Wherein, the first pressue device 5 and the second pressue device 5 ' include tensimeter LP, and pressue device is mainly pressurize and pass through tensimeter monitoring pressure drop wherein by inflating, and pressue device is common practise, repeats no more herein.
With reference to figure 2, are cut-open views of the first seal in Fig. 1; In conjunction with Fig. 3 A and Fig. 3 B, Fig. 3 A is the vertical view of the sealing-plug in Fig. 1; Fig. 3 B is the cut-open view of the sealing-plug in Fig. 1;
The cylindrical projections 102 matching with draft tube 1 inner passage that the first seal 10 comprises disc structure 101 and forms along described disc structure 101 undergauges.
The region that described disc structure 101 contacts with draft tube 1 end offer two axisymmetric about disc structure 101 centers, for the first mounting hole 13, the first seals 10 of erection bolt 14, by described bolt 14, be fixedly mounted on described draft tube 1 end.
In the present embodiment, the external diameter of described disc structure 101 equates with the external diameter of draft tube 1, and the region that disc structure 101 contacts with draft tube 1 end offer two axisymmetric about disc structure 101 centers, for the first mounting hole 13 of erection bolt 14, during sealing, cylindrical projections 102 is plugged into draft tube 1 inside, disc structure 101 supports towards the end of draft tube 1 in draft tube 1 end, and the first seal 10 is fixedly mounted on draft tube 1 end by bolt 14.
The second seal 20 comprises the sealing-plug 21 matching with leader 3 and is set in the sealing ring 22 on sealing-plug 21;
On the first seal 10, be provided with for connecting the first pressue device 5 with the first pressurization hole 11 to valve pocket pressurization with for connecting the second pressue device 5 ' with the second pressurization hole 12 to pressurization between sealing-plug 21 and sealing ring 22, the first pressue device 5 is for monitoring the pressure drop of valve pocket, and the second pressue device 5 ' is for monitoring the pressure drop between sealing-plug 21 and sealing ring 22.
Wherein, the circumferential side wall of sealing-plug 21 offers the annular mounting groove 221 matching with sealing ring 22, the second through hole 212 that sealing-plug 21 is connected with annular mounting groove 221 along axially offering of leader 3 towards the sidewall of longitudinal balance part 30, in the present embodiment, the shaft section of annular mounting groove 221 is along being " protruding " font towards the visual angle of sealing-plug 21 central shafts, the bottom of annular mounting groove 221 radially offers air channel 222, the second through hole 212 is communicated to this air channel 222, offer the position of offering that air channel 222 is limited to the second through hole 212, by air channel 222 is set, can relax the impulse force of pressurization, and being convenient to gas-pressurized permeates in whole annular mounting groove 221, gas-pressurized can not gone out in disperse, the more important thing is, gas-pressurized after air channel 222 from radially giving pressurization between sealing-plug 21 and sealing ring 22, sealing-plug 21 tilt problem of having avoided axial direct weighting to cause.
In order to alleviate sealing-plug 21 weight, preferred, at sealing-plug 21, towards the edge of the end face of longitudinal balance part 30, offer ring groove.
By the first seal 10 and the second seal 20, the outlet of whole swing check valve to be detected is carried out to shutoff to guarantee sealing, then by the first pressue device 5, to valve pocket, pressurize, the second pressue device 5 ' is given pressurization between sealing-plug 21 and sealing ring 22, after pressurization, monitor respectively the pressure drop of the first pressue device 5 and the second pressue device 5 ', again valve pocket pressure drop is deducted to the pressure drop between sealing-plug 21 and sealing ring 22, be the pressure drop of swing check valve, pressure drop can be calculated the slip of swing check valve accordingly, if the slip of swing check valve exceedes preset value, judge this valve gas leakage, utilize this device to detect the sealing of swing check valve, not only simply but also accurate, can before cold examination or heat examination, carry out sealing propertytest or the valve after repairing be carried out to sealing propertytest, after avoiding valve online, because sealing the defective unit that causes, drop back, guarantee carrying out smoothly of cold examination and heat examination.
For example, after package seal checker of the present utility model is coordinated with swing check valve installing, first by the first pressue device 5, to valve pocket, pressurize, the second pressue device 5 ' is given pressurization between sealing-plug 21 and sealing ring 22, while having pressurizeed, the pressure of valve pocket is R KPa, after pressurization, observe the pressure drop of the first pressue device 5 and the pressure drop of the second pressue device 5 ', such as the pressure drop of the first pressue device 5 is A Kpa, the pressure drop of the second pressue device 5 ' is B Kpa, the pressure drop of swing check valve is (A-B) Kpa, the slip of swing check valve is (A-B)/R, if it is greater than preset value, think that this swing check valve leaks gas, defective.
With reference to figure 4, are vertical views of the longitudinal balance part in Fig. 1.
Package seal checker also comprises the round table-like longitudinal balance part 30 matching with mouth 4 that mouth 4 is set, and the axial force that longitudinal balance part 30 causes for equalizing valve intracavity gas pressure, prevents that sealing-plug 21 is by axial force ramming system pipeline.
Package seal checker also comprises two web members 40, sealing-plug 21 offers two about the axisymmetric mounting groove 211 in sealing-plug 21 center towards the sidewall of longitudinal balance part 30, longitudinal balance part 30 axially offers two second mounting holes 31 corresponding with mounting groove 211 along leader 3, the two ends of each web member 40 are plugged on respectively in corresponding mounting groove 211 and the second mounting hole 31, due to longitudinal balance part 30 for mouth 4 match round table-like, therefore longitudinal balance part 30 can not be pressed in systematic pipeline, sealing-plug 21 is fixedly connected with by two symmetrical web members, therefore can prevent that sealing-plug 21 is by axial force ramming system pipeline.
Wherein, the aperture ratio of the first through hole 32 is larger, can conveniently wear wireway on the one hand, can also alleviate greatly on the other hand the weight of longitudinal balance part 30.
To sum up, package seal checker of the present utility model is by the first seal, the second seal seals whole swing check valve to be detected, then by the first pressue device, to valve pocket, pressurize, the second pressue device is to pressurizeing between sealing-plug and sealing ring, after pressurization, monitor respectively the pressure drop of the first pressue device and the second pressue device, thereby the slip that the swing check valve detecting is calculated in pressure drop accordingly again judges whether gas leakage, utilize this pick-up unit, can before cold examination or heat examination, carry out sealing propertytest or the valve after repairing be carried out to sealing propertytest, after avoiding valve online, because sealing the defective unit that causes, drop back, guarantee carrying out smoothly of cold examination and heat examination.
By reference to the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not departing from the scope situation that the utility model aim and claim protect, also can make a lot of forms, within these all belong to protection of the present utility model.
Claims (7)
1. a package seal checker, sealing for the swing check valve to nuclear power station detects, described swing check valve comprises the valve seat with valve pocket, described valve seat comprises draft tube (1) and escape pipe (2), described escape pipe (2) inner passage comprises leader (3), it is characterized in that, described package seal checker comprises that fixed cap is located at first seal (10) of described draft tube (1) end, fixedly be located in described escape pipe (2) and be positioned at second seal (20) of described leader (3), the first pressue device (5) being connected with described escape pipe (2) respectively and the second pressue device (5 '),
Described the second seal (20) comprises the sealing-plug (21) matching with described leader (3) and is set in the sealing ring (22) on described sealing-plug (21);
On described the first seal (10), be provided with for connecting described the first pressue device (5) with the first pressurization hole (11) to described valve pocket pressurization with for connecting described the second pressue device (5 ') with the second pressurization hole (12) to pressurization between described sealing-plug (21) and sealing ring (22), described the first pressue device (5) is for monitoring the pressure drop of described valve pocket, and described the second pressue device (5 ') is for monitoring the pressure drop between described sealing-plug (21) and sealing ring (22).
2. package seal checker according to claim 1, it is characterized in that the cylindrical projections (102) matching with described draft tube (1) inner passage that described the first seal (10) comprises disc structure (101) and forms along described disc structure (101) undergauge.
3. package seal checker according to claim 2, it is characterized in that, the region that described disc structure (101) contacts with described draft tube (1) end offer two axisymmetric about described disc structure (101) center, for first mounting hole (13) of erection bolt (14), described the first seal (10) is fixedly mounted on described draft tube (1) end by described bolt (14).
4. package seal checker according to claim 1, it is characterized in that, described leader (3) is tubular, described escape pipe (2) inner passage also comprises the tapered mouth (4) away from described leader (3) central shaft that is positioned at described leader (3) upstream, and described package seal checker also comprises the round table-like longitudinal balance part (30) that is arranged on described mouth (4) and matches with described mouth (4).
5. package seal checker according to claim 4, it is characterized in that, described package seal checker also comprises two web members (40), described sealing-plug (21) offers two axisymmetric mounting grooves in center (211) about described sealing-plug (21) towards the sidewall of described longitudinal balance part (30), described longitudinal balance part (30) axially offers two second mounting holes (31) corresponding with described mounting groove (211) along described leader (3), the two ends of each described web member (40) are plugged on respectively in corresponding described mounting groove (211) and the second mounting hole (31).
6. package seal checker according to claim 5, it is characterized in that, the circumferential side wall of described sealing-plug (21) offers the annular mounting groove (221) matching with described sealing ring (22), described sealing-plug (21) offers the second through hole (212) being connected with described annular mounting groove (221) vertically towards the sidewall of described longitudinal balance part (30)
Described longitudinal balance part (30) offers the first through hole (32) vertically, and described the second pressue device (5 ') accesses described the second pressurization hole (12) by being connected to described the second through hole (212) by wireway through after described the first through hole (32).
7. package seal checker according to claim 6, is characterized in that, the bottom of described annular mounting groove (221) radially offers air channel (222) along described sealing-plug (21), and described the second through hole (212) is communicated to described air channel (222).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320711133.0U CN203551229U (en) | 2013-11-12 | 2013-11-12 | Sealing detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320711133.0U CN203551229U (en) | 2013-11-12 | 2013-11-12 | Sealing detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203551229U true CN203551229U (en) | 2014-04-16 |
Family
ID=50469327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320711133.0U Expired - Lifetime CN203551229U (en) | 2013-11-12 | 2013-11-12 | Sealing detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203551229U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387975A (en) * | 2015-12-31 | 2016-03-09 | 无锡宝瑞德科技有限公司 | Ultralow temperature balance sealing ring leakage amount testing device |
| CN105448358A (en) * | 2015-11-10 | 2016-03-30 | 中广核工程有限公司 | High-temperature test method and device for beyond design basis pressure relieve valve in nuclear power plant |
| CN114184372A (en) * | 2021-12-07 | 2022-03-15 | 江苏佳晟动力系统有限公司 | Device for vacuum test of semiconductor vacuum valve |
-
2013
- 2013-11-12 CN CN201320711133.0U patent/CN203551229U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448358A (en) * | 2015-11-10 | 2016-03-30 | 中广核工程有限公司 | High-temperature test method and device for beyond design basis pressure relieve valve in nuclear power plant |
| CN105448358B (en) * | 2015-11-10 | 2018-06-15 | 中广核工程有限公司 | The hot test method and device of nuclear power station beyond design basis accident pressure relief valve |
| CN105387975A (en) * | 2015-12-31 | 2016-03-09 | 无锡宝瑞德科技有限公司 | Ultralow temperature balance sealing ring leakage amount testing device |
| CN114184372A (en) * | 2021-12-07 | 2022-03-15 | 江苏佳晟动力系统有限公司 | Device for vacuum test of semiconductor vacuum valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |