CN109443663B - Gate valve online pressing system - Google Patents
Gate valve online pressing system Download PDFInfo
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- CN109443663B CN109443663B CN201811573996.XA CN201811573996A CN109443663B CN 109443663 B CN109443663 B CN 109443663B CN 201811573996 A CN201811573996 A CN 201811573996A CN 109443663 B CN109443663 B CN 109443663B
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- 238000003825 pressing Methods 0.000 title claims abstract description 38
- 238000012360 testing method Methods 0.000 claims abstract description 59
- 238000010926 purge Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000004891 communication Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 39
- 239000007788 liquid Substances 0.000 claims description 27
- 239000010865 sewage Substances 0.000 claims description 6
- 238000010009 beating Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 2
- 238000012669 compression test Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 17
- 238000012423 maintenance Methods 0.000 abstract description 8
- 238000011056 performance test Methods 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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
- G01M3/26—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
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- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention belongs to the technical field of sealing performance tests and maintenance of gate valves, in particular relates to an online gate valve pressing system, and aims to provide an online gate valve pressing system which is used for performing a medium-cavity pressing test on a gate valve through a gate valve blowing hole. The system can simulate the actual running pressure of the gate valve, quantitatively detect the leakage rate of the gate valve in a set time, and can be used for verifying the sealing performance of the valve cover and the sealing surface of the gate valve, thereby ensuring the maintenance quality of the gate valve. The device is characterized by comprising a pressing test bed, a data acquisition upper computer, a high-pressure hose and a network cable; the pressure output interface of the pressing test bed is connected with a gate valve purging hole or a gate valve body pressing special interface through a high-pressure hose to provide test media and test pressure for the gate valve; the data acquisition upper computer is connected with a communication network port of the pressing test bed through a network cable, and is used for setting test pressure and test time parameters, acquiring data change in the pressing process in real time and automatically analyzing and recording the pressing result.
Description
Technical Field
The invention belongs to the technical field of sealing performance test and maintenance of gate valves, and particularly relates to an online gate valve pressing system.
Background
Gate valves are widely applied in nuclear power plants, are mainly arranged on primary loop and secondary loop system pipelines, play roles in fluid interception and isolation, and the quality of sealing performance of the valves directly influences the safe, reliable, economical and stable operation of the nuclear power plants, and particularly if valves serving as isolation boundaries leak, the integrity of the pressure boundaries of the whole system is damaged, so that the operation safety of the nuclear power plants is threatened.
At present, the verification of the gate valve maintenance effect and sealing performance of most nuclear power stations in China is judged according to a blue oil test, and certain uncertainty exists; the actual sealing performance of the gate valve can only be verified when a pressure test or a sealing test is carried out during the boosting period of the unit or the system, and once the gate valve is leaked or the test is disqualified, the unit state can be retracted, reworking maintenance is needed, and the overhaul period or the unit state is influenced.
The gate valve (electric gate valve) on-line diagnosis technology is widely applied to various nuclear power stations in China, and mainly verifies whether the closing thrust or torque of a valve is properly set and whether the valve is properly closed in place or not in theory, but cannot verify the structural integrity of a sealing surface of the valve and the actual sealing performance of a valve body. The gate valve is pressed in a middle cavity pressing mode, the valve is subjected to a sealing test on line, and the structural integrity of the sealing surface body of the gate valve can be directly checked to verify the maintenance effect of the gate valve.
At present, certain domestic sluice valve pressurizing systems of nuclear power stations introduce an OPERA sluice valve pressurizing tool of French Fabry-Perot company, but the tool has higher price and lower intelligent degree; the domestic technical company entrusted with nuclear power stations in China develops a gate valve pressurizing system, but the gate valve pressurizing system has the problems of poor system stability, low measurement precision, poor repeatability, complex operation, large volume and the like in the actual use of a nuclear power site and is abandoned by various power stations.
Disclosure of Invention
The invention aims to provide an online pressurizing system for a gate valve, which is used for performing a medium-cavity pressurizing test on the gate valve through a gate valve purging hole. The system can simulate the actual running pressure of the gate valve, quantitatively detect the leakage rate of the gate valve in a set time, and can be used for verifying the sealing performance of the valve cover and the sealing surface of the gate valve, thereby ensuring the maintenance quality of the gate valve.
The invention is realized in the following way:
An online gate valve pressing system comprises a pressing test bed, a data acquisition upper computer, a high-pressure hose and a network cable; the pressure output interface of the pressing test bed is connected with a gate valve purging hole or a gate valve body pressing special interface through a high-pressure hose to provide test media and test pressure for the gate valve; the data acquisition upper computer is connected with a communication network port of the pressing test bed through a network cable, and is used for setting test pressure and test time parameters, acquiring data change in the pressing process in real time and automatically analyzing and recording the pressing result.
The pressure test bed comprises a water tank, a first manual pressure relief valve, a first manual ball valve, a safety valve, a first electric ball valve, an electric pump group, a second manual pressure relief valve, a one-way valve, a first pressure gauge, a temperature sensor, a first manual stop valve, a second electric ball valve, an energy accumulator, a second manual stop valve, a second pressure sensor, a first pressure sensor, an exhaust stop valve and a quick plug; the first water outlet of the water tank is connected to one end of a first manual pressure relief valve through a pipeline, and the other end of the first manual pressure relief valve is connected to one end of the electric pump set and the liquid inlet end of the one-way valve through a pipeline respectively; the second water outlet of the water tank is connected with one end of a first manual ball valve through a pipeline, and the other end of the first manual ball valve is connected with the other end of the electric pump set through a pipeline; the liquid outlet end of the one-way valve is respectively connected with one end of the safety valve, one end of the second manual pressure relief valve, one end of the first electric ball valve and one end of the first manual stop valve through pipelines; the third water outlet of the water tank is connected with the other end of the lower safety valve through a pipeline; the fourth water outlet of the water tank is connected with the other end of the second manual pressure relief valve through a pipeline; the fifth water outlet of the water tank is connected with the other end of the first electric ball valve through a pipeline; the first pressure gauge and the temperature sensor are respectively connected to a pipeline between the liquid outlet end of the one-way valve and the first manual stop valve through pipelines; the other end of the first manual stop valve is connected with one end of a second electric ball valve through a pipeline, and the other end of the second electric ball valve is respectively connected with one end of the exhaust stop valve and the liquid inlet end of the quick plug through a pipeline; the air outlet end of the energy accumulator and the first pressure sensor are respectively connected to a pipeline between the second electric ball valve and the quick connector through pipelines; the second pressure sensor is connected to the energy accumulator through a pipeline, and a second manual stop valve is arranged on the pipeline.
The water tank is internally provided with a high liquid level alarm, a low liquid level alarm, an air filter valve and a liquid level meter; the lower end of the water tank is connected with the sewage outlet through a pipeline and a manual ball valve.
The test bench further comprises two filters, one of which is arranged on a pipeline between the one-way valve and the electric pump set, and the other of which is arranged on a pipeline between the electric pump set and the first ball valve.
And a pipeline between the upper one-way valve and the electric pump set is connected with the sewage outlet.
The data acquisition upper computer is respectively connected to the high liquid level alarm, the low liquid level alarm, the control end of the electric pump set, the temperature sensor, the control end of the first electric ball valve, the control end of the first pressure sensor and the control end of the second electric ball valve and the second pressure sensor through network cables.
The data acquisition upper computer is realized by a PC.
The beneficial effects of the invention are as follows:
1. the invention monitors the change of the test medium pressure of the valve cavity of the gate valve and the real-time leakage value in real time;
2. the invention can directly verify the sealing performance (valve cover sealing performance and valve body sealing performance) or maintenance quality of the gate valve;
3. the test data can be displayed in real time and stored automatically; all test data can be queried and traced, and test reports can be automatically generated and printed.
Drawings
FIG. 1 is a schematic diagram of an on-line gate valve crimping system connection of the present invention;
Fig. 2 is a schematic diagram of a gate valve on-line pressing system according to the present invention.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in FIG. 1, the gate valve online pressing system comprises a pressing test bed, a data acquisition upper computer, a high-pressure hose and a net wire. The pressure output interface of the pressing test bed is connected with a gate valve purging hole or a gate valve body pressing special interface through a high-pressure hose to provide test media and test pressure for the gate valve; the data acquisition upper computer is connected with a communication network port of the pressing test bed through a network cable, and is used for setting parameters such as test pressure, test time and the like, acquiring data change in the pressing process in real time and automatically analyzing and recording the pressing result.
As shown in FIG. 2, the test bench of beating includes water tank, first manual relief valve V4, first manual ball valve V7, relief valve, first electric ball valve M1, electric pump group, second manual relief valve V6, check valve, first manometer, temperature sensor, first manual stop valve V1, second electric ball valve M2, energy storage ware, second manual stop valve V5, second pressure sensor, first pressure sensor, exhaust stop valve V2 and quick plug. The first water outlet of the water tank is connected with one end of a first manual pressure relief valve V4 through a pipeline, and the other end of the first manual pressure relief valve V4 is connected with one end of the electric pump set and the liquid inlet end of the one-way valve through pipelines respectively. The second water outlet of the water tank is connected with one end of a first manual ball valve V7 through a pipeline, and the other end of the first manual ball valve V7 is connected with the other end of the electric pump set through a pipeline. The liquid outlet end of the one-way valve is respectively connected with one end of the safety valve, one end of the second manual pressure relief valve V6, one end of the first electric ball valve M1 and one end of the first manual stop valve V1 through pipelines. The third water outlet of the water tank is connected with the other end of the lower safety valve through a pipeline. The fourth water outlet of the water tank is connected with the other end of the second manual pressure relief valve V6 through a pipeline. The fifth water outlet of the water tank is connected with the other end of the first electric ball valve M1 through a pipeline. The first pressure gauge and the temperature sensor are respectively connected to a pipeline between the liquid outlet end of the one-way valve and the first manual stop valve V1 through pipelines. The other end of the first manual stop valve V1 is connected with one end of a second electric ball valve M2 through a pipeline, and the other end of the second electric ball valve M2 is connected with one end of the exhaust stop valve V2 and the liquid inlet end of the quick plug through pipelines respectively. The air outlet end of the energy accumulator and the first pressure sensor are respectively connected to a pipeline between the second electric ball valve M2 and the quick connector through pipelines. The second pressure sensor is connected to the accumulator through a pipeline, and a second manual stop valve V5 is arranged on the pipeline.
The water tank is internally provided with a high liquid level alarm, a low liquid level alarm, an air filtering valve and a liquid level meter. The lower end of the water tank is connected with the sewage outlet through a pipeline and a manual ball valve.
The test bench of beating still include two filters, one of them sets up on the pipeline between check valve and the electric pump group, and another sets up on the pipeline between electric pump group and first ball valve V7.
The pipeline between the one-way valve and the electric pump group is connected with the sewage outlet.
The data acquisition upper computer is respectively connected with the high liquid level alarm, the low liquid level alarm, the control end of the electric pump set, the temperature sensor, the control end of the first electric ball valve M1, the first pressure sensor, the control end of the second electric ball valve M2 and the second pressure sensor through network cables.
The data acquisition upper computer is realized by a PC.
The application steps of the invention are as follows:
1. And detaching the plug of the packing purging hole or the punching hole on the gate valve, installing the NPT quick connector, and firmly connecting the pressure output port of the test bed with the purging hole (or the punching hole) by using a high-pressure hose.
2. After the pressurizing test system is connected, the system is electrified (220 VAC), a manual/automatic switching knob on the pressurizing test stand is rotated to a manual position, a pump pressurizing switch is manually started to enable the pressurizing loop to be raised to a certain pressure, and then an exhaust valve, an exhaust device and the like in the system are used for flushing, exhausting and pressure relief of the whole loop. The pressurizing and pressure relief processes can also be operated on the data acquisition upper computer in an automatic control mode.
3. Relevant information (such as nominal pressure, nominal diameter and the like) of the tested gate valve and test parameters (such as test pressure, test time, acceptance pressure, allowable pressure drop, leakage rate acceptance standard and the like) are input into the data acquisition upper computer. The data acquisition software is operated to start the pump to boost under the automatic control mode, and when the system is boosted, the first electric ball valve M1, the first manual pressure relief valve V4, the second manual pressure relief valve V6, the second manual stop valve V5 and the exhaust stop valve V2 in FIG. 2 are kept closed, and the first manual ball valve V7, the first manual stop valve V1 and the second electric ball valve M2 are kept open. When the system detects that the pressure value of the first pressure sensor reaches the set test pressure, the system automatically closes the second electric ball valve M2 and manually closes the first manual stop valve V1. After the pressure is stabilized for 1 minute, the system automatically enters a pressure maintaining detection stage, and after the pressure maintaining time is over, the system automatically records a test curve and data and displays a test result. And opening the first manual stop valve V1, and releasing pressure by the data acquisition upper computer, wherein the first electric ball valve M1 and the second electric ball valve M2 are opened simultaneously, so that the pressure release is completed. A safety valve and a manual pressure relief valve are arranged in a loop of the pressurizing system, and when the test pressure is higher than the protection pressure, the system automatically relieves pressure and stops the pump.
4. The valve information can be managed (operations such as creation, editing, deletion and the like) in the data acquisition upper computer, the test data and the curve are played back in the past, the test curve can be subjected to auxiliary analysis, labeling and the like, a test report can be automatically generated, and the test result is evaluated.
While the embodiments of the present invention have been described in detail, the present invention is not limited to the embodiments described above, and various modifications may be made without departing from the spirit of the present invention, within the knowledge of those skilled in the art. The invention may be practiced otherwise than as specifically described in the specification.
Claims (5)
1. The utility model provides a gate valve system of beating on line which characterized in that: the device comprises a compression test bed, a data acquisition upper computer and a high-pressure hose; the pressure output interface of the pressing test bed is connected with a gate valve purging hole or a gate valve body pressing special interface through a high-pressure hose to provide test media and test pressure for the gate valve; the data acquisition upper computer sets the test pressure and test time parameters of the pressing test bed, acquires the data change in the pressing process in real time, and automatically analyzes and records the pressing result; the pressure test bed comprises a water tank, a first manual pressure relief valve (V4), a first manual ball valve (V7), a safety valve, a first electric ball valve (M1), an electric pump set, a second manual pressure relief valve (V6), a one-way valve, a first pressure gauge, a temperature sensor, a first manual stop valve (V1), a second electric ball valve (M2), an energy accumulator, a second manual stop valve (V5), a second pressure sensor, a first pressure sensor, an exhaust stop valve (V2) and a quick plug; the first water outlet of the water tank is connected with one end of a first manual pressure relief valve (V4) through a pipeline, and the other end of the first manual pressure relief valve (V4) is connected with one end of the electric pump set and the liquid inlet end of the one-way valve through pipelines respectively; the second water outlet of the water tank is connected with one end of a first manual ball valve (V7) through a pipeline, and the other end of the first manual ball valve (V7) is connected with the other end of the electric pump set through a pipeline; the liquid outlet end of the one-way valve is respectively connected with one end of the safety valve, one end of the second manual pressure relief valve (V6), one end of the first electric ball valve (M1) and one end of the first manual stop valve (V1) through pipelines; the third water outlet of the water tank is connected with the other end of the lower safety valve through a pipeline; the fourth water outlet of the water tank is connected with the other end of the second manual pressure relief valve (V6) through a pipeline; the fifth water outlet of the water tank is connected with the other end of the first electric ball valve (M1) through a pipeline; the first pressure gauge and the temperature sensor are respectively connected to a pipeline between the liquid outlet end of the one-way valve and the first manual stop valve (V1) through pipelines; the other end of the first manual stop valve (V1) is connected with one end of a second electric ball valve (M2) through a pipeline, and the other end of the second electric ball valve (M2) is respectively connected with one end of the exhaust stop valve (V2) and the liquid inlet end of the quick plug through a pipeline; the air outlet end of the energy accumulator and the first pressure sensor are respectively connected to a pipeline between the second electric ball valve (M2) and the quick connector through pipelines; the second pressure sensor is connected to the energy accumulator through a pipeline, and a second manual stop valve (V5) is arranged on the pipeline; the data acquisition upper computer automatically controls the system to boost, maintain pressure and release pressure; when the system is boosted, the first electric ball valve (M1), the first manual relief valve (V4), the second manual relief valve (V6), the second manual stop valve (V5) and the exhaust stop valve (V2) are automatically closed, and the first manual ball valve (V7), the first manual stop valve (V1) and the second electric ball valve (M2) are automatically opened; when the system is in pressure maintaining, the second electric ball valve (M2) is automatically closed, and the first manual stop valve (V1) is manually closed; when the system is depressurized, the first manual stop valve (V1) is opened manually, and the first electric ball valve (M1) and the second electric ball valve (M2) are opened automatically; the data acquisition upper computer is realized by a PC.
2. The gate valve on-line pressing system of claim 1, wherein: the water tank is internally provided with a high liquid level alarm, a low liquid level alarm, an air filtering valve and a liquid level meter; the lower end of the water tank is connected to the sewage outlet through a pipeline and a manual ball valve.
3. The gate valve on-line pressing system of claim 1, wherein: the test bench of beating still include two filters, one of them sets up on the pipeline between check valve and the electric pump group, and another sets up on the pipeline between electric pump group and first manual ball valve (V7).
4. The gate valve on-line pressing system of claim 1, wherein: and a pipeline between the one-way valve and the electric pump set is connected with the sewage outlet.
5. The gate valve on-line pressing system of claim 1, wherein: the data acquisition upper computer is connected with a communication network port of the pressing test bed through a network cable; the data acquisition upper computer is respectively connected with the high liquid level alarm, the low liquid level alarm, the control end of the electric pump set, the temperature sensor, the control end of the first electric ball valve (M1), the first pressure sensor, the control end of the second electric ball valve (M2) and the second pressure sensor through network cables.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811573996.XA CN109443663B (en) | 2018-12-21 | 2018-12-21 | Gate valve online pressing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811573996.XA CN109443663B (en) | 2018-12-21 | 2018-12-21 | Gate valve online pressing system |
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| CN109443663A CN109443663A (en) | 2019-03-08 |
| CN109443663B true CN109443663B (en) | 2024-05-10 |
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| CN201811573996.XA Active CN109443663B (en) | 2018-12-21 | 2018-12-21 | Gate valve online pressing system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530430A (en) * | 2019-09-25 | 2019-12-03 | 哈尔滨工程大学 | A kind of electric gate valve periodic detection experimental bench and detection method |
| CN111189629A (en) * | 2020-03-04 | 2020-05-22 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Opening and closing test device and method for underwater electric control valve |
| CN111537164B (en) * | 2020-05-20 | 2021-10-01 | 三门核电有限公司 | C-shaped ball valve on-line stroke adjusting and pressing test system and method |
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| CN109443663A (en) | 2019-03-08 |
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