CN112129471A - Sealing test device for check valve - Google Patents
Sealing test device for check valve Download PDFInfo
- Publication number
- CN112129471A CN112129471A CN202010920594.3A CN202010920594A CN112129471A CN 112129471 A CN112129471 A CN 112129471A CN 202010920594 A CN202010920594 A CN 202010920594A CN 112129471 A CN112129471 A CN 112129471A
- Authority
- CN
- China
- Prior art keywords
- check valve
- blind plate
- sealing
- joint
- test device
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 52
- 238000012360 testing method Methods 0.000 title claims abstract description 45
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008676 import Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 238000005493 welding type Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a sealing test device for a check valve, which comprises an outlet blind plate, a plug, a sealing gasket, a pressure gauge joint, a joint, an inlet blind plate, a screw, a nut and a pressure gauge. And a plurality of screw rods and nuts are connected between the outlet blind plate and the inlet blind plate. The check valve is installed between the outlet blind plate and the inlet blind plate. And the check valve and the outlet blind plate are provided with sealing gaskets. And the check valve and the inlet blind plate are provided with sealing gaskets. A first through hole is formed in the joint of the check valve and the outlet blind plate and the check valve, and a joint is connected to one side of the first through hole. The invention has the beneficial effects that: by using the check valve sealing test device provided by the invention, the valve sealing performance can be visually checked by observing the test pressure change, so that the check valve maintenance quality and the equipment reliability are improved. The device is simple in structure, convenient and reliable in operation and wide in application range, and test results are convenient and reliable to read.
Description
Technical Field
The invention belongs to the field of maintenance of check valves of nuclear power stations, and particularly relates to a sealing test device for a check valve.
Background
Due to the special automatic non-return function, the non-return valve is widely applied to various water and steam loop systems of the nuclear power station. However, due to long-term medium scouring, frequent opening and closing and frequent occurrence of leakage defects of the check valve, in the process of overhauling and maintaining the check valve, the sealing surfaces of the valve clack and the valve seat need to be ground and the sealing performance needs to be verified, the sealing performance is verified only by checking the pressing line of the sealing surface through a blue oil test in the existing check valve overhauling procedure, the verification mode depends on the skill level of an operator to a great extent, and the sealing performance of the valve cannot be completely guaranteed. Once the valve is not tightly sealed, the valve can be repeatedly out of service, and manpower and material resources are wasted.
Therefore, the check valve sealing test device is designed and manufactured, the check valve after maintenance is subjected to sealing test, the valve sealing performance can be quickly, conveniently and conveniently verified, the valve sealing reliability is ensured, and the stable operation of a power station system is ensured.
Disclosure of Invention
The invention aims to provide a sealing test device for a check valve, which can solve the problem that the sealing performance cannot be reliably verified in the check valve maintenance process and improve the check valve maintenance quality.
The technical scheme of the invention is as follows: the utility model provides a be used for check valve seal test device, includes the export blind plate, the end cap, sealed the pad, the manometer connects, import blind plate, screw rod, nut and manometer.
And a plurality of screw rods and nuts are connected between the outlet blind plate and the inlet blind plate.
The check valve is installed between the outlet blind plate and the inlet blind plate.
And the check valve and the outlet blind plate are provided with sealing gaskets.
And the check valve and the inlet blind plate are provided with sealing gaskets.
A first through hole is formed in the joint of the check valve and the outlet blind plate and the check valve, and a joint is connected to one side of the first through hole.
And a second through hole is formed at the joint of the check valve and the inlet blind plate and the check valve, and one side of the second through hole is connected with a plug.
The check valve and the outlet blind plate are also provided with a third through hole which is communicated with the joint of the outlet blind plate and the check valve, the top of the third through hole is connected with a pressure gauge joint, and the pressure gauge joint is connected with a pressure gauge.
The check valve and the outlet blind plate and the inlet blind plate are of plate-shaped structures.
The sealing gasket is made of polytetrafluoroethylene.
The invention has the beneficial effects that: by using the check valve sealing test device provided by the invention, the valve sealing performance can be visually checked by observing the test pressure change, so that the check valve maintenance quality and the equipment reliability are improved. The device is simple in structure, convenient and reliable in operation and wide in application range, and test results are convenient and reliable to read.
Drawings
Fig. 1 is a schematic view of a sealing test device for a check valve provided by the invention.
In the figure, 1 outlet blind plate, 2 plugs, 3 sealing gaskets, 4 pressure gauge joints, 5 joints, 6 inlet blind plates, 7 screw rods, 8 nuts, 9 pressure gauges, 10 check valves, 11 first through holes, 12 second through holes and 13 third through holes.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in figure 1, the device for testing the sealing of the check valve comprises an outlet blind plate 1, a plug 2, a sealing gasket 3, a pressure gauge joint 4, a joint 5, an inlet blind plate 6, a screw 7, a nut 8 and a pressure gauge 9.
Wherein, be connected with a plurality of screw rods 7 and nut 8 between export blind plate 1 and the import blind plate 6, check valve 10 is installed between export blind plate 1 and import blind plate 6, check valve 10 all is provided with sealed 3 with export blind plate 1 and import blind plate 6, it has first through-hole 11 to open with check valve 10 junction on the export blind plate 1, one side of first through-hole 11 is connected with joint 5, joint 5 can connect the hydraulic pump, it has second through-hole 12 to open with check valve 10 junction on the import blind plate 6, one side of second through-hole 12 is connected with end cap 2, it communicates with each other with check valve 10 junction on third through-hole 13 and the export blind plate 1 still to open on the export blind plate 1, the top of third through-hole 13 is connected with manometer joint 4, manometer joint 4 is connected with manometer 9.
The outlet blind plate 1 and the inlet blind plate 6 are of plate-shaped structures, and four groups of screws 7 and nuts 8 are provided.
The following description is made with reference to fig. 1:
the check valve is reliably clamped through the inlet and outlet blind plates and the connecting screw rod, sealing force is provided, and the inlet and the outlet of the check valve are sealed with the blind plates through the sealing gaskets 3. Wherein the sealing gasket 3 is made of polytetrafluoroethylene and can be processed and manufactured according to the connection form (welding type or flange type) of the inlet and the outlet of the valve;
processing an internal thread interface on an inlet blind plate and communicating the internal thread interface with an inlet of a check valve to serve as a hydraulic pump interface, processing a pressure gauge interface on the side surface of the inlet blind plate, connecting the pressure gauge interface and installing a pressure gauge;
and thirdly, reserving a threaded connector at the side of the outlet blind plate, serving as a leakage observation point for a valve sealing test, and realizing the sealing test of the check valve body and the middle flange by additionally arranging a plug.
Carry out check valve seal test through sealed test device, the core lies in:
the check valve is reliably clamped, and an inlet and an outlet are effectively sealed;
providing a pressing interface and a pressure detection interface;
and realizing two functions of the check valve clack, the valve seat sealing test and the valve body and middle flange sealing test.
The main innovation points of the sealing test device are as follows:
1. the special valve sealing surface structure can be used for pressing a welding type check valve and is also suitable for a flange type check valve sealing test, and the application range is wide;
2. the experimental device is simple and reliable, the operation is convenient, and the test result is read visually and conveniently.
Claims (10)
1. The utility model provides a be used for check valve seal test device which characterized in that: the pressure gauge comprises an outlet blind plate, a plug, a sealing gasket, a pressure gauge joint, a joint, an inlet blind plate, a screw, a nut and a pressure gauge.
2. A test device for testing the sealing of a check valve according to claim 1, wherein: and a plurality of screw rods and nuts are connected between the outlet blind plate and the inlet blind plate.
3. A test device for testing the sealing of a check valve according to claim 1, wherein: the check valve is installed between the outlet blind plate and the inlet blind plate.
4. A test device for testing the sealing of a check valve according to claim 1, wherein: and the check valve and the outlet blind plate are provided with sealing gaskets.
5. A test device for testing the sealing of a check valve according to claim 1, wherein: and the check valve and the inlet blind plate are provided with sealing gaskets.
6. A test device for testing the sealing of a check valve according to claim 1, wherein: a first through hole is formed in the joint of the check valve and the outlet blind plate and the check valve, and a joint is connected to one side of the first through hole.
7. A test device for testing the sealing of a check valve according to claim 1, wherein: and a second through hole is formed at the joint of the check valve and the inlet blind plate and the check valve, and one side of the second through hole is connected with a plug.
8. A test device for testing the sealing of a check valve according to claim 1, wherein: the check valve and the outlet blind plate are also provided with a third through hole which is communicated with the joint of the outlet blind plate and the check valve, the top of the third through hole is connected with a pressure gauge joint, and the pressure gauge joint is connected with a pressure gauge.
9. A test device for testing the sealing of a check valve according to claim 1, wherein: the check valve and the outlet blind plate and the inlet blind plate are of plate-shaped structures.
10. A test device for testing the sealing of a check valve according to claim 1, wherein: the sealing gasket is made of polytetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010920594.3A CN112129471A (en) | 2020-09-04 | 2020-09-04 | Sealing test device for check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010920594.3A CN112129471A (en) | 2020-09-04 | 2020-09-04 | Sealing test device for check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112129471A true CN112129471A (en) | 2020-12-25 |
Family
ID=73847298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010920594.3A Pending CN112129471A (en) | 2020-09-04 | 2020-09-04 | Sealing test device for check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112129471A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028166A (en) * | 2021-02-25 | 2021-06-25 | 西安航天发动机有限公司 | Switching pre-tightening type sealing structure and sealing method of shaft assembly |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201327434Y (en) * | 2008-11-27 | 2009-10-14 | 秦山核电有限公司 | On-line experimental unit for portable welding check valve |
| KR20100045242A (en) * | 2008-10-23 | 2010-05-03 | 한전케이피에스 주식회사 | Sealing test device for swing check valve on reactor coolant pressure boundary |
| CN102788692A (en) * | 2012-07-17 | 2012-11-21 | 浙江石化阀门有限公司 | Thermal state seal test device of superhigh temperature hot valve |
| CN205424005U (en) * | 2015-12-18 | 2016-08-03 | 安徽方兴实业（集团）有限公司 | Heavy -calibre flange joint valve |
| CN207649843U (en) * | 2017-12-28 | 2018-07-24 | 陕西航天机电环境工程设计院有限责任公司 | A kind of valve test tool |
| CN209524224U (en) * | 2018-12-21 | 2019-10-22 | 核动力运行研究所 | A kind of mechanical plug tool suppressed for check-valves |
| CN209625812U (en) * | 2019-01-30 | 2019-11-12 | 中广核工程有限公司 | Nuclear fuel transfer tube bulge test device |
| CN210603733U (en) * | 2019-09-23 | 2020-05-22 | 福建福清核电有限公司 | Novel special blind plate for valve sealing test of nuclear island ventilation system |
| CN213516236U (en) * | 2020-09-04 | 2021-06-22 | 中核核电运行管理有限公司 | Sealing test device for check valve |
-
2020
- 2020-09-04 CN CN202010920594.3A patent/CN112129471A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100045242A (en) * | 2008-10-23 | 2010-05-03 | 한전케이피에스 주식회사 | Sealing test device for swing check valve on reactor coolant pressure boundary |
| CN201327434Y (en) * | 2008-11-27 | 2009-10-14 | 秦山核电有限公司 | On-line experimental unit for portable welding check valve |
| CN102788692A (en) * | 2012-07-17 | 2012-11-21 | 浙江石化阀门有限公司 | Thermal state seal test device of superhigh temperature hot valve |
| CN205424005U (en) * | 2015-12-18 | 2016-08-03 | 安徽方兴实业（集团）有限公司 | Heavy -calibre flange joint valve |
| CN207649843U (en) * | 2017-12-28 | 2018-07-24 | 陕西航天机电环境工程设计院有限责任公司 | A kind of valve test tool |
| CN209524224U (en) * | 2018-12-21 | 2019-10-22 | 核动力运行研究所 | A kind of mechanical plug tool suppressed for check-valves |
| CN209625812U (en) * | 2019-01-30 | 2019-11-12 | 中广核工程有限公司 | Nuclear fuel transfer tube bulge test device |
| CN210603733U (en) * | 2019-09-23 | 2020-05-22 | 福建福清核电有限公司 | Novel special blind plate for valve sealing test of nuclear island ventilation system |
| CN213516236U (en) * | 2020-09-04 | 2021-06-22 | 中核核电运行管理有限公司 | Sealing test device for check valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028166A (en) * | 2021-02-25 | 2021-06-25 | 西安航天发动机有限公司 | Switching pre-tightening type sealing structure and sealing method of shaft assembly |
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