CN210802760U - Quick connecting device for pressure measurement behind check valve of nuclear power station - Google Patents
Quick connecting device for pressure measurement behind check valve of nuclear power station Download PDFInfo
- Publication number
- CN210802760U CN210802760U CN201921110090.4U CN201921110090U CN210802760U CN 210802760 U CN210802760 U CN 210802760U CN 201921110090 U CN201921110090 U CN 201921110090U CN 210802760 U CN210802760 U CN 210802760U
- Authority
- CN
- China
- Prior art keywords
- cutting ferrule
- check valve
- joint
- nuclear power
- pressure measurement
- 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.)
- Active
Links
Images
Classifications
-
- 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
Abstract
The utility model provides a quick connecting device for pressure measurement behind nuclear power station check valve, including manometer, table joint, crossover sub, cutting ferrule joint, instrument tube and flange. Wherein the pressure gauge is connected with the gauge joint, the adapter, the ferrule joint, the instrument tube and the flange in sequence. The pressure gauge and the gauge joint adopt a welding connection mode. The meter connector and the adapter connector are connected by screw threads. The adapter and the ferrule adapter are connected by screw thread. The cutting ferrule connector and the instrument tube are connected by a cutting ferrule. The instrument tube and the flange are connected in a welding mode. The utility model has the advantages of being simple and compact in structure, convenient operation maintains that the warranty is with low costs, and the leakproofness is good, improves work efficiency, improves check valve seal test's reliability.
Description
Technical Field
The utility model belongs to the technical field of the manometer is connected, concretely relates to a quick connecting device for pressure measurement behind nuclear power station check valve.
Background
The safety injection system is used for completing the emergency cooling function of a reactor core of the nuclear power station when a loss of coolant accident happens to a reactor coolant system or a pipeline rupture accident happens to a main steam system. The check valve on the system is a special part for preventing the leakage of the reactor coolant, and the tightness of the check valve directly influences the pressure boundary of a loop, so that the tightness test of the check valve can be executed on different pressure platforms before and after each overhaul of the nuclear power station, the check valve used for ensuring the downstream of a safe injection pipeline is sealed, and the risk of small damage outside a containment vessel is extremely unlikely to occur.
The main problem that exists at present is when nuclear power station unit overhaul carries out the check valve leakage test of safe injection system, all need be at a large amount of interim manometer of the downstream pipeline installation of check valve, look over check valve downstream pipeline pressure change in the testing process, calculate the leakage rate of check valve, judge from this whether the leakproofness of check valve satisfies the requirement.
In addition, in the existing method, a pressure gauge needs to be temporarily borrowed before the test, the threaded hole in the center of the flange is connected by using an adapter, the work preparation time is long, the work efficiency is low, the irradiation dose of workers is greatly increased, water leakage is easy to occur under high pressure, and the construction period of the main line is seriously influenced.
Therefore, a quick connection device which can adapt to the size of a field interface is urgently needed and is used for pressure measurement after the check valve.
Disclosure of Invention
The utility model aims at providing a quick connecting device for pressure measurement behind nuclear power station check valve improves check valve seal test's reliability.
The utility model adopts the technical proposal that:
a quick connecting device for pressure measurement behind a check valve of a nuclear power station comprises a pressure gauge, a gauge connector, a conversion connector, a clamping sleeve connector, an instrument tube and a flange. Wherein the pressure gauge is connected with the gauge joint, the adapter, the ferrule joint, the instrument tube and the flange in sequence.
The pressure gauge and the gauge joint adopt a welding connection mode. The meter connector and the adapter connector are connected by screw threads. The adapter and the ferrule adapter are connected by screw thread. The cutting ferrule connector and the instrument tube are connected by a cutting ferrule. The instrument tube and the flange are connected in a welding mode.
The pressure gauge is a precision pressure gauge qualified through verification and used for pressure display.
The meter connector is a self-contained connector of the precision pressure meter, is fastened and connected with the upper end of the adapter by threads, and is provided with a polytetrafluoroethylene gasket in the middle to prevent leakage during connection.
The adapter is a common stainless steel adapter, the upper end of the adapter is fixedly connected with the threaded part of the surface connector, and the lower end of the adapter is fixedly connected with the ferrule connector. One side that crossover sub joint table connects uses the polytetrafluoroethylene gasket sealed, and one side that crossover sub connects the joint of joint coupling uses the cutting ferrule sealed.
The ferrule connector is matched with the instrument tube in size and comprises a ferrule and a nut. In the instrument tube inserted the cutting ferrule and connected, utilized the nut locking cutting ferrule of cutting ferrule to contradict, the interior sword of cutting ferrule cut instrument tube evenly, formed effective seal.
The instrument tube is a common stainless steel seamless steel tube. One end of the instrument tube is welded with the flange, and the other end of the instrument tube is provided with a clamping sleeve joint.
The periphery of the flange is provided with four round holes with the same diameter for penetrating bolts. The center position of flange is opened has a round hole, and the round hole diameter is greater than the instrument tube diameter, and the central point that the one end of instrument tube inserted the flange puts the round hole and welds together.
The utility model discloses the beneficial effect who gains does:
1) the tool is simple in design, compact in structure, convenient for on-site quick connection and very beneficial to the use of the nuclear power station with extremely high requirement on the main line construction period during refueling overhaul;
2) the operation is convenient, the maintenance cost is low, the sealing performance is good, the working efficiency is improved, and the irradiation dose of personnel is reduced;
3) the reliability of the sealing test of the check valve is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a quick connection device for measuring the back pressure of a check valve of a nuclear power plant;
FIG. 2 is a front view of a quick connect apparatus for post-nuclear power plant check valve pressure measurement;
FIG. 3 is a sectional view taken along the line A-A of the quick connect apparatus for post-check pressure measurement in a nuclear power plant;
FIG. 4 is a front view of the crossover joint;
FIG. 5 is a cross-sectional view of the adapter B-B.
Wherein: 1 is a pressure gauge; 2 is a meter connector; 3 is a crossover sub; 4 is a socket joint; 5 is an instrument tube; and 6 is a flange.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-5, the utility model provides a quick connecting device for pressure measurement behind the check valve of nuclear power station.
A quick connecting device for pressure measurement behind a check valve of a nuclear power station comprises a pressure gauge 1, a gauge connector 2, a conversion connector 3, a clamping sleeve connector 4, an instrument tube 5 and a flange 6. Wherein, the pressure gauge 1 is connected with the gauge joint 2, the adapter joint 3, the ferrule joint 4, the instrument tube 5 and the flange 6 in sequence.
The pressure gauge 1 and the gauge joint 2 adopt a welding connection mode. The meter connector 2 and the conversion connector 3 are connected by screw threads. The adapter 3 and the ferrule adapter 4 are connected by screw thread. The ferrule connector 4 and the instrument tube 5 are connected by a ferrule. The instrument tube 5 and the flange 6 are connected by welding.
The pressure gauge 1 is a precision pressure gauge which is qualified through verification and is used for pressure display.
The meter connector 2 is a connector of the precision pressure meter, is fastened and connected with the upper end of the adapter 3 by threads, and is provided with a polytetrafluoroethylene gasket in the middle to prevent leakage during connection.
The adapter 3 is a common stainless steel adapter, the upper end of the adapter 3 is fixedly connected with the thread part of the surface connector 2, and the lower end of the adapter 3 is fixedly connected with the ferrule connector 4. One side that crossover sub 3 connects table to connect 2 uses the polytetrafluoroethylene gasket sealed, and one side that crossover sub 3 connects 4 of joint is sealed using the cutting ferrule.
The ferrule joint 4 is a ferrule joint matched with the instrument tube 5 in size, and the ferrule joint 4 comprises a ferrule and a nut. In instrument tube 5 inserted ferrule connects 4, utilize the nut locking of ferrule joint 4 to contradict the ferrule, instrument tube 5 is cut evenly to the interior sword of ferrule, forms effective seal.
The instrumentation tube 5 is a common stainless steel seamless tube. One end of the instrument tube 5 is welded with the flange 6, and the other end is provided with a clamping sleeve joint 4.
The periphery of the flange 6 is provided with four round holes with the same diameter for penetrating bolts. The center position of flange 6 is opened has a round hole, and the round hole diameter is greater than instrument tube 5 diameter, and the central point of flange is inserted and is welded together to the one end of instrument tube 5.
The utility model discloses the beneficial effect who gains does:
1) the tool is simple in design, compact in structure, convenient for on-site quick connection and very beneficial to the use of the nuclear power station with extremely high requirement on the main line construction period during refueling overhaul;
2) the operation is convenient, the maintenance cost is low, the sealing performance is good, the working efficiency is improved, and the irradiation dose of personnel is reduced;
3) the reliability of the sealing test of the check valve is improved.
Claims (9)
1. The utility model provides a quick connecting device for pressure measurement behind nuclear power station check valve which characterized in that: the pressure gauge comprises a pressure gauge (1), a gauge connector (2), a conversion connector (3), a clamping sleeve connector (4), an instrument tube (5) and a flange (6), wherein the pressure gauge (1) is sequentially connected with the gauge connector (2), the conversion connector (3), the clamping sleeve connector (4), the instrument tube (5) and the flange (6).
2. The quick connection device for the pressure measurement behind the check valve of the nuclear power plant as claimed in claim 1, characterized in that: manometer (1) and table connect (2) adopt welded connected mode, and table connects (2) and crossover sub (3) and adopts threaded connection, and crossover sub (3) and cutting ferrule joint (4) adopt threaded connection, and cutting ferrule joint (4) and instrument pipe (5) adopt the cutting ferrule to be connected, and instrument pipe (5) and flange (6) adopt welded mode to connect.
3. The quick connection device for the pressure measurement behind the check valve of the nuclear power plant as claimed in claim 1, characterized in that: the pressure gauge (1) is a precision pressure gauge which is qualified through verification.
4. The quick connection device for the pressure measurement behind the check valve of the nuclear power plant as claimed in claim 1, characterized in that: the gauge joint (2) is a self-contained joint of the precision pressure gauge and is fixedly connected with the upper end of the conversion joint (3) by threads.
5. The quick connection device for the pressure measurement behind the check valve of the nuclear power plant as claimed in claim 1, characterized in that: crossover sub (3) are ordinary stainless steel material crossover sub, and the upper end of crossover sub (3) is connected with the screw thread portion fastening of table joint (2), and the lower extreme and the cutting ferrule of crossover sub (3) connect (4) fastening connection, and one side that crossover sub (3) connect table joint (2) uses the polytetrafluoroethylene gasket sealed, and one side that crossover sub (3) connect cutting ferrule joint (4) uses the cutting ferrule sealed.
6. The quick connection device for the pressure measurement behind the check valve of the nuclear power plant as claimed in claim 1, characterized in that: cutting ferrule connects (4) and instrument tube (5) size assorted cutting ferrule connects, and cutting ferrule connects (4) including cutting ferrule and nut two parts, and instrument tube (5) insert in cutting ferrule connects (4), utilize the nut locking conflict cutting ferrule of cutting ferrule joint (4), and the interior sword of cutting ferrule cuts instrument tube (5) evenly.
7. The quick connection device for the pressure measurement behind the check valve of the nuclear power plant as claimed in claim 1, characterized in that: the instrument tube (5) is a common stainless steel seamless steel tube.
8. The quick connection device for the pressure measurement behind the check valve of the nuclear power plant as claimed in claim 1, characterized in that: the periphery of the flange (6) is provided with four round holes with the same diameter for penetrating bolts.
9. The quick connection device for pressure measurement behind a check valve in a nuclear power plant as claimed in claim 1 or 8, characterized in that: the central point of flange (6) puts and opens and has a round hole, and the round hole diameter is greater than the diameter of instrument tube (5), and the central point that the one end of instrument tube (5) inserted the flange puts the round hole and welds together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921110090.4U CN210802760U (en) | 2019-07-16 | 2019-07-16 | Quick connecting device for pressure measurement behind check valve of nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921110090.4U CN210802760U (en) | 2019-07-16 | 2019-07-16 | Quick connecting device for pressure measurement behind check valve of nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210802760U true CN210802760U (en) | 2020-06-19 |
Family
ID=71241538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921110090.4U Active CN210802760U (en) | 2019-07-16 | 2019-07-16 | Quick connecting device for pressure measurement behind check valve of nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210802760U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323497A (en) * | 2021-12-10 | 2022-04-12 | 苏州热工研究院有限公司 | Clamp for testing sealing performance of plugged pipe, system and method for testing sealing performance of plugged pipe |
-
2019
- 2019-07-16 CN CN201921110090.4U patent/CN210802760U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323497A (en) * | 2021-12-10 | 2022-04-12 | 苏州热工研究院有限公司 | Clamp for testing sealing performance of plugged pipe, system and method for testing sealing performance of plugged pipe |
| CN114323497B (en) * | 2021-12-10 | 2023-12-12 | 苏州热工研究院有限公司 | Clamp for testing sealing performance of pipe plug, system and method for testing sealing performance of pipe plug |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210802760U (en) | Quick connecting device for pressure measurement behind check valve of nuclear power station | |
| CN102661827A (en) | Measuring method and measuring device for pressure of fluid in pipeline | |
| CN106644289B (en) | Temporary device for in-service inspection hydrostatic test of nuclear power station and application method of temporary device | |
| CN206179528U (en) | Water gate pressure holding device during whole pressing experiment of containment | |
| CN212467601U (en) | Gas and oil mist separation equipment for emergency control system of airplane | |
| CN203298885U (en) | Temperature-measurement and pressure-measurement data acquisition head | |
| CN212894849U (en) | Austenitic stainless steel container strain strengthening treatment tool | |
| CN208043564U (en) | A kind of metal containment integrality test pressure protective device | |
| CN207779633U (en) | A kind of perpendicular section steel modeling bend pipe detection device | |
| CN212967137U (en) | Reactor upper portion subassembly leakage monitoring pipe pressure equipment device | |
| CN217059172U (en) | Experimental auxiliary device of containment penetration piece leakproofness | |
| CN215217949U (en) | Device for detecting sealing performance of gas chamber of bypass exhaust valve of steam turbine of nuclear power plant | |
| CN111091918A (en) | Neutron flux tube inspection integrated device | |
| CN210742234U (en) | Hydrogen-oxygen concentration monitoring device for hydrogen pipeline | |
| CN211315433U (en) | Reducing pressure pipeline crossover sub | |
| CN216524214U (en) | Annular space liquid level display equipment for spent fuel dry method transfer container and sealed storage tank | |
| CN214397294U (en) | Pressure detection device for fuelling vehicle | |
| CN216407131U (en) | Clamp for nuclear power station water pump system and electric head yoke with same | |
| CN217688191U (en) | Pressure control device for hydrostatic test of nuclear power station container/heat exchanger | |
| CN220568362U (en) | RIC system electric valve test device that presses | |
| CN215065114U (en) | Nuclear power station containment check valve sealing test device | |
| CN111530224B (en) | Gas and oil mist separation device for aircraft emergency control system and use method thereof | |
| CN220189254U (en) | Leakage detection device for nuclear power station | |
| CN216309366U (en) | Exhaust device for container hydrostatic test | |
| CN214373190U (en) | Integrated device for pressure test |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |