CN112539931A - High-pressure cold and hot state test system for valve - Google Patents

High-pressure cold and hot state test system for valve Download PDF

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Publication number
CN112539931A
CN112539931A CN202011466551.9A CN202011466551A CN112539931A CN 112539931 A CN112539931 A CN 112539931A CN 202011466551 A CN202011466551 A CN 202011466551A CN 112539931 A CN112539931 A CN 112539931A
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CN
China
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pipeline
water
valve
water inlet
test
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CN202011466551.9A
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冯泉
张宪伟
李雷
关丽君
王剑
张晗
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Shenyang Shengshi Wuhuan Technology Co ltd
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Shenyang Shengshi Wuhuan Technology Co ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00Testing of machine parts
    • G01M13/003Machine valves

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  • General Physics & Mathematics (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

The invention discloses a high-pressure cold-hot state test system for a valve, which comprises a main pipeline system, a cooling device, an auxiliary heating device, a test section pipeline and a water supply and supplement device, wherein the cooling device is arranged on the main pipeline system; the cooling device is connected with the main pipeline system, the auxiliary heating device is connected with the main pipeline system, the test section pipeline is connected with the main pipeline system, and the water supply and supplement device is connected with the main pipeline system; the main pipeline system, the cooling device, the auxiliary heating device and the test section pipeline form a cold and hot dual-purpose closed circulation system. The system is simple, has high reliability, convenient operation, less investment and high degree of automation, and can realize the performance test in the nuclear power field, in particular to the performance test under the on-site simulation working condition before the nuclear military valve leaves the factory. By combining the technical characteristics, the high-pressure cold-state and hot-state test system for the valve is an important test means for ensuring the quality of the valve in the field of nuclear power, particularly nuclear military valve manufacturing enterprises.

Description

High-pressure cold and hot state test system for valve
Technical Field
The invention belongs to the technical field of valve tests, and particularly relates to a test system for testing cold and hot performances of a special valve.
Background
In nuclear power equipment, valves are only fittings, but the functions cannot be ignored, the valves in the nuclear power plant are widely distributed, the flow of various media in each system is controlled, the valves are important guarantee for the safe operation of the nuclear power plant, and the main valves comprise a stop valve, a safety valve, a protection valve and a phase splitting valve. The nuclear-grade valve is a medium conveying control device, the total investment accounts for about 6% of the investment of power station equipment, but the maintenance and replacement cost of the nuclear-grade valve accounts for half of the maintenance cost of the nuclear-grade equipment, and the nuclear-grade valve is a vulnerable device in the nuclear-grade equipment. Valves applied in the nuclear power field, particularly nuclear military valves, work under the high-temperature and high-pressure working condition, the reliability requirement on the performance of the valves is very high, so that the valves need to simulate the on-site high-temperature and high-pressure working condition to carry out various performance tests before leaving factories, and a high-temperature and high-pressure test system is an indispensable condition for testing the performance of the valves. Under normal conditions, the investment of a test system for simulating the nuclear power field, particularly the nuclear military valve site working condition construction test is very large, and the test system cannot bear the common enterprises.
Based on the above reasons, it is necessary to design a valve high-temperature and high-pressure test system which can meet the high-temperature and high-pressure working conditions of nuclear power field, especially nuclear military valve, and can control the investment amount, and it is a problem that needs to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a valve performance test system and a test operation method thereof, which can simulate the high-temperature and high-pressure working conditions of the nuclear power field, particularly the nuclear military valve application field and can control the investment amount.
In order to achieve the purpose, the invention adopts the following technical scheme.
The invention relates to a high-pressure cold-hot state test system for a valve, which is characterized in that: the device comprises a main pipeline system, a cooling device, an auxiliary heating device, a test section pipeline and a water supply and supplement device; the cooling device is connected with the main pipeline system, the auxiliary heating device is connected with the main pipeline system, the test section pipeline is connected with the main pipeline system, and the water supply and supplement device is connected with the main pipeline system; the main pipeline system, the cooling device, the auxiliary heating device and the test section pipeline form a cold and hot dual-purpose closed circulation system.
As a preferred scheme of the present invention, the main pipeline system includes a main pump, a pressure stabilizing heater, a water inlet section main pipeline, a water return section main pipeline, a first auxiliary pipeline, a second auxiliary pipeline, a third auxiliary pipeline, a fourth auxiliary pipeline, a pressure stabilizing heater water inlet pipeline, and a pressure stabilizing heater water outlet pipeline; the main pump is respectively connected with the water inlet section main pipeline and the water return section main pipeline, and the pressure stabilizing heater is respectively connected with the pressure stabilizing heater water inlet pipeline and the pressure stabilizing heater water outlet pipeline; the first auxiliary pipeline and the fourth auxiliary pipeline are respectively connected to the water inlet section main pipeline and the water return section main pipeline, the second auxiliary pipeline is connected to the first auxiliary pipeline and the water return section main pipeline, and the third auxiliary pipeline is connected to the first auxiliary pipeline and the water inlet section main pipeline.
Furthermore, a heater water inlet connecting joint, a heater water outlet connecting joint and a test section pipeline water inlet connecting joint are arranged on the water inlet section main pipeline, a water supply connecting joint, a water supplement connecting joint, a cooler water outlet connecting joint and a test section pipeline water outlet connecting joint are arranged on the water return section main pipeline, and a cooler water inlet connecting joint is arranged on the first auxiliary pipeline; the water inlet connecting joint and the water outlet connecting joint of the heater are connected with the auxiliary heating device, the water inlet connecting joint and the water outlet connecting joint of the test section pipeline are connected with the test section pipeline, the water supply connecting joint and the water supplement connecting joint are connected with the water supply and supplement device, and the water inlet connecting joint and the water outlet connecting joint of the cooler are connected with the cooling device.
Furthermore, a first pressure gauge and a first thermometer are arranged on the main pipeline of the water inlet section close to the position of the water outlet end of the main pump, a second thermometer and a second pressure gauge are arranged close to the position of the water outlet connecting joint of the heater, and a third thermometer and a third pressure gauge are arranged close to the position of the water inlet connecting joint of the pipeline of the test section; the filter is arranged at a position, close to a water inlet end of the main pump, of the water return section main pipeline, the main pump and the filter are respectively provided with a first differential pressure gauge and a second differential pressure gauge, a fourth pressure gauge and a fourth temperature gauge are arranged at positions, close to a water outlet connector of the test section pipeline, of the water return section main pipeline, a first flow meter is arranged on the water return section main pipeline, and a first valve and a second valve are respectively arranged on the water inlet section main pipeline and the water return section main pipeline.
Furthermore, one end of the first auxiliary pipeline is communicated with the main pipeline of the water inlet section, the other end of the first auxiliary pipeline is communicated with the main pipeline of the water return section, and a third valve is arranged on the first auxiliary pipeline; one end of the second auxiliary pipeline is communicated with the first auxiliary pipeline, the other end of the second auxiliary pipeline is communicated with the main pipeline of the water return section, and a fourth valve is arranged on the second auxiliary pipeline; one end of the third auxiliary pipeline is communicated with the main pipeline of the water inlet section, the other end of the third auxiliary pipeline is communicated with the first auxiliary pipeline, and a fifth valve is arranged on the third auxiliary pipeline; one end of the fourth auxiliary pipeline is communicated with the water inlet section main pipeline, the other end of the fourth auxiliary pipeline is communicated with the water return section main pipeline, and a sixth valve is arranged on the fourth auxiliary pipeline.
Furthermore, one end of a water inlet pipeline of the pressure stabilizing heater is communicated with a water inlet of the pressure stabilizing heater, the other end of the water inlet pipeline of the pressure stabilizing heater is communicated with the first auxiliary pipeline, and a fifth thermometer, a fifth pressure gauge and a seventh valve are arranged on the water inlet pipeline of the pressure stabilizing heater; one end of the water outlet pipeline of the pressure stabilizing heater is communicated with the water outlet of the pressure stabilizing heater, the other end of the water outlet pipeline of the pressure stabilizing heater is communicated with the main pipeline of the water return section, and a second flowmeter, an eighth valve and a first safety valve are arranged on the water outlet pipeline of the pressure stabilizing heater.
As another preferred scheme of the invention, the cooling device comprises a cooler, a cooler water inlet pipeline and a cooler water outlet pipeline, wherein one end of the cooler water inlet pipeline and one end of the cooler water outlet pipeline are respectively communicated with a water inlet and a water outlet of the cooler; a cooler water inlet pipe orifice at the other end of the cooler water inlet pipeline is communicated with a cooler water inlet connecting joint on the first auxiliary pipeline, and a cooler water outlet pipe orifice at the other end of the cooler water outlet pipeline is communicated with a cooler water outlet connecting joint on the main pipeline of the water return section; a second safety valve and a ninth valve are arranged on the water inlet pipeline of the cooler, and a sixth pressure gauge, a sixth temperature gauge and a tenth valve are arranged on the water outlet pipeline of the cooler.
As another preferred scheme of the invention, the auxiliary heating device comprises a heater, a heater water inlet pipeline and a heater water outlet pipeline, wherein one end of the heater water inlet pipeline and one end of the heater water outlet pipeline are respectively communicated with a water inlet and a water outlet of the heater; a heater water inlet pipe orifice at the other end of the heater water inlet pipeline is communicated with a heater water inlet connecting joint on the water inlet section main pipeline, and a heater water outlet pipe orifice at the other end of the heater water outlet pipeline is communicated with a heater water outlet connecting joint on the water inlet section main pipeline; an eleventh valve is arranged on the water inlet pipeline of the heater, and a seventh thermometer, a seventh pressure gauge and a twelfth valve are arranged on the water outlet pipeline of the heater.
As another preferred scheme of the invention, the test section pipeline comprises a test valve, a test pipeline and a thirteenth valve, the test valve and the thirteenth valve are connected to the test pipeline, and the test valve is provided with a third differential pressure gauge; the water inlet pipe orifice of the test section pipeline on the test section pipeline is communicated with the water inlet connecting joint of the test section pipeline on the water inlet section main pipeline, and the water outlet pipe orifice of the test section pipeline is communicated with the water outlet connecting joint of the test section pipeline on the water return section main pipeline.
As another preferred scheme of the invention, the water supply and supplement device comprises a water tank, a water supply pump, a pressure pump, a water inlet pipe of the water supply pump, a water outlet pipe of the water supply pump, a water inlet pipe of the pressure pump and a water outlet pipe of the pressure pump, wherein a fourteenth valve is arranged on the water outlet pipe of the water supply pump, a fifteenth valve is arranged on the water inlet pipe of the pressure pump, and a check valve and a stop check valve are arranged on the water outlet pipe of the pressure; one end of a water inlet pipe of the water feed pump is communicated with the water tank, the other end of the water inlet pipe of the water feed pump is communicated with a water inlet of the water feed pump, one end of a water outlet pipe of the water feed pump is communicated with a water outlet of the water feed pump, and a water outlet pipe orifice of the water feed pump at the other end of the water outlet pipe of the water feed pump is communicated with a water supply connecting; one end of a water inlet pipe of the pressure pump is communicated with the water tank, the other end of the water inlet pipe of the pressure pump is communicated with a water inlet of the pressure pump, one end of a water outlet pipe of the pressure pump is communicated with a water outlet of the pressure pump, and a water outlet pipe orifice of the pressure pump at the other end of the water outlet pipe of the pressure pump is communicated with a water supplementing connecting joint on a main pipeline.
Secondly, a closed circulation system is formed by the main pipeline system, the cooling device, the auxiliary heating device and the test section pipeline, the medium pressure in the system can reach 20 MPa at most, and the highest temperature is 350 ℃; the voltage-stabilizing heater can adopt a mode of integrating voltage stabilization and heating functions and can also be respectively and independently provided with a voltage stabilizer and a heater; the first safety valve arranged on the water outlet pipeline of the pressure stabilizing heater can also be arranged on the pressure stabilizing heater.
In addition, the third valve arranged on the first auxiliary pipeline can be one, two or more, and the valve form can be a manual valve, an electric valve, or a mixture of the manual valve and the electric valve.
The fourth valve arranged on the second auxiliary pipeline can be one, two or more than two, and the valve form can be a manual valve or an electric valve or a mixture of the manual valve and the electric valve.
The fifth valve arranged on the third auxiliary pipeline can be one, two or more than two, and the valve form can be a manual valve or an electric valve or a mixture of the manual valve and the electric valve.
The sixth valve arranged on the fourth auxiliary pipeline can be one, two or more than two, and the valve form can be a manual valve or an electric valve or a mixture of the manual valve and the electric valve.
The seventh valve arranged on the water inlet pipeline of the pressure stabilizing heater can be one, two or more than two, and the valve form can be a manual valve or an electric valve or a combination of the manual valve and the electric valve.
The eighth valve arranged on the water outlet pipeline of the pressure stabilizing heater can be one, two or more than two, and the valve form can be a manual valve or an electric valve or a combination of the manual valve and the electric valve.
The invention relates to a test operation method of a high-pressure cold and hot state test system for a valve, which comprises the following operation steps:
1) after the test valve is installed in a test section pipeline and is tested through a hydrostatic test, a water feeding pump is started to fill water in the test system and give up, the valve in the test system is fully opened to exhaust air in a loop, and the pressure stabilizing heater is in a water solid state;
2) after the water filling and the air discharging are finished, starting a pressurizing pump to pressurize a test system loop;
3) starting the main pump circulation loop system;
4) starting a heating system of the voltage-stabilizing heater to heat a loop of the test system, and fully opening a valve in the test system to enable heat generated by the voltage-stabilizing heater to circulate in the loop of the test system;
5) when the temperature in the loop of the test system reaches the preset temperature, adjusting the valves of the auxiliary loops to enable the pressure and the temperature of the loop of the test system to reach the required test pressure and temperature, and then testing various performances of the test valves;
6) when the loop pressure and temperature of the test system exceed the required test pressure and temperature, or when a cold-hot alternating test needs to be carried out in the test process, the temperature of the test loop system can be reduced and depressurized through the cooling device;
7) after the test is finished, the heating system of the pressure stabilizing heater is closed, the main pump continues to operate, and the cooling device 2 is used for cooling and reducing the pressure of the test system loop;
8) and when the temperature of the test system loop is close to normal temperature and normal pressure, opening an exhaust valve and a drain valve on the test system loop to drain the test system loop.
The invention has the beneficial effects.
The invention provides a test system for testing high-pressure cold and hot state performances of nuclear power field, in particular nuclear military valve, and a test operation method thereof, which realizes the simulation of on-site high-temperature and high-pressure working condition; the test system of the invention, which consists of the main pipeline system, the cooling device, the auxiliary heating device, the test section pipeline and the water supply and supplement device, is characterized in that: the system is simple, has high reliability, convenient operation, less investment and high degree of automation, and can realize the performance test in the nuclear power field, in particular to the performance test under the on-site simulation working condition before the nuclear military valve leaves the factory. By combining the technical characteristics, the high-pressure cold-state and hot-state test system for the valve is an important test means for ensuring the quality of the valve in the field of nuclear power, particularly nuclear military valve manufacturing enterprises.
Drawings
Fig. 1 is a schematic structural diagram of a high-pressure cold-hot state testing system for a valve according to the present invention.
Fig. 2 is a schematic structural diagram of a main pipeline system of a high-pressure cold-hot state testing system for a valve according to the present invention.
Fig. 3 is a schematic structural diagram of a cooling device of a high-pressure cold-hot state testing system for a valve according to the present invention.
Fig. 4 is a schematic structural diagram of an auxiliary heating device of a high-pressure cold-hot state testing system for a valve according to the present invention.
Fig. 5 is a schematic structural diagram of a test section pipeline of the high-pressure cold-hot state test system for the valve.
FIG. 6 is a schematic structural diagram of a water supply and supplement device of a high-pressure cold-hot state testing system for a valve according to the present invention.
In FIG. 1, the labels: the system comprises a main pipeline system 1, a cooling device 2, an auxiliary heating device 3, a test section pipeline 4 and a water supply device 5;
in FIG. 2, the notation: 6 is a main pump, 7 is a pressure stabilizing heater, 8 is a main pipeline of a water inlet section, 9 is a first valve, 10 is a first pressure gauge, 11 is a first thermometer, 12 is a second thermometer, 13 is a second pressure gauge, 14 is a third thermometer, 15 is a third pressure gauge, 16 is a main pipeline of a water return section, 17 is a filter, 18 is a first differential pressure gauge, 19 is a second valve, 20 is a first flow meter, 21 is a fourth thermometer, 22 is a fourth pressure gauge, 23 is a first auxiliary pipeline, 24 is a third valve, 25 is a second auxiliary pipeline, 26 is a fourth valve, 27 is a third auxiliary pipeline, 28 is a fifth valve, 29 is a fourth auxiliary pipeline, 30 is a sixth valve, 31 is a water inlet pipeline of the pressure stabilizing heater, 32 is a seventh valve, 33 is a fifth thermometer, 34 is a fifth pressure gauge, 35 is a pipeline of the pressure stabilizing heater, 36 is an eighth valve, 37 is a first safety valve, 38 is a second flow meter, 39 is a second differential pressure meter, A is a water supply connecting joint, B is a water replenishing connecting joint, C is a cooler water outlet connecting joint, D is a cooler water inlet connecting joint, E is a heater water inlet connecting joint, F is a heater water outlet connecting joint, G is a test section pipeline water inlet connecting joint, and H is a test section pipeline water outlet connecting joint;
labeled in FIG. 3: 40 is a cooler, 41 is a cooler water inlet pipeline, 42 is a ninth valve, 43 is a cooler water outlet pipeline, 44 is a sixth pressure gauge, 45 is a sixth thermometer, 46 is a tenth valve, 47 is a second safety valve, C1 is a cooler water outlet pipe opening, and D1 is a cooler water inlet pipe opening;
labeled in FIG. 4: 48 is a heater, 49 is a heater water inlet pipeline, 50 is an eleventh valve, 51 is a heater water outlet pipeline, 52 is a seventh thermometer, 53 is a seventh pressure gauge, 54 is a twelfth valve, E1 is a heater water inlet pipe orifice, and F1 is a heater water outlet pipe orifice;
labeled in FIG. 5: 55 is a test valve, 56 is a test pipeline, 57 is a thirteenth valve, 58 is a third differential pressure gauge, G1 is a test section pipeline water inlet pipe orifice, and H1 is a test section pipeline water outlet pipe orifice;
labeled in FIG. 6: 59 is a water tank, 60 is a water supply pump, 61 is a pressure pump, 62 is a water inlet pipe of the water supply pump, 63 is a water outlet pipe of the water supply pump, 64 is a fourteenth valve, 65 is a water inlet pipe of the pressure pump, 66 is a fifteenth valve, 67 is a water outlet pipe of the pressure pump, 68 is a check valve, 69 is a stop check valve, A1 is a water outlet pipe mouth of the water supply pump, and B1 is a water outlet pipe mouth of the pressure pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the invention without making creative efforts, fall within the scope of the invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "near", "one end", "the other end", and the like indicate orientations or positional relationships based on positions or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or component must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly defined otherwise, the terms "disposed" and "in communication with" are to be interpreted broadly, for example, "in communication with" may be fixed, detachable, or integrally connected; can be directly communicated with each other or indirectly communicated with each other through an intermediate medium. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-6, in fig. 1, 1 is a main pipeline system, 2 is a cooling device, 3 is an auxiliary heating device, 4 is a test section pipeline, and 5 is a water supply and supplement device; in fig. 2, the main pipeline system 1 comprises a main pump 6, a pressure stabilizing heater 7, a water inlet section main pipeline 8, a water return section main pipeline 16, a first auxiliary pipeline 23, a second auxiliary pipeline 25, a third auxiliary pipeline 27, a fourth auxiliary pipeline 29, a pressure stabilizing heater water inlet pipeline 31 and a pressure stabilizing heater water outlet pipeline 35, wherein the pressure stabilizing heater 7 adopts a pressure stabilizing and heating function integrated type, a first pressure gauge 10 and a first temperature gauge 11 are arranged on the water inlet section main pipeline 8 close to the water outlet end of the main pump 6, a third temperature gauge 14 and a third pressure gauge 15 are arranged on the water inlet section main pipeline close to the water inlet connection joint G of the test section pipeline, a second temperature gauge 12 and a second pressure gauge 13 are arranged on the water outlet connection joint F of the heater, a filter 17 is arranged on the water return section main pipeline 16 close to the water inlet end of the main pump 6, and the filter 17, A fourth thermometer 21, a fourth pressure gauge 22 and a first flowmeter 20 are arranged at the position, close to the water outlet connecting joint H of the test section pipeline, of the first differential pressure gauge 18, the first flowmeter 20 is arranged on the water return section main pipeline 16, and the water inlet section main pipeline 8 and the water return section main pipeline 16 are respectively provided with a second valve 19; one end of a first auxiliary pipeline 23 is communicated with the water inlet section main pipeline 8, and the other end of the first auxiliary pipeline is communicated with the water return section main pipeline 16, a third valve 24 is arranged on the first auxiliary pipeline 23, one end of a second auxiliary pipeline 25 is communicated with the first auxiliary pipeline 23, and the other end of the second auxiliary pipeline is communicated with the water return section main pipeline 16, a fourth valve 26 is arranged on the second auxiliary pipeline 25, one end of an auxiliary pipeline 27 is communicated with the water inlet section main pipeline 8, and the other end of the auxiliary pipeline is communicated with the first auxiliary pipeline 23, a fifth valve 28 is arranged on the third auxiliary pipeline 27, one end of a fourth auxiliary pipeline 29 is communicated with the water inlet section main pipeline 8, and the other end of the fourth auxiliary pipeline 29 is communicated with the water return section main pipeline 16, and a sixth; one end of a water inlet pipeline 31 of the pressure stabilizing heater is communicated with a water inlet of the pressure stabilizing heater 7, the other end of the water inlet pipeline 31 of the pressure stabilizing heater is communicated with the first auxiliary pipeline 23, a fifth thermometer 33, a fifth pressure gauge 34 and two seventh valves 32 are arranged on the water inlet pipeline 31 of the pressure stabilizing heater, one end of a water outlet pipeline 35 of the pressure stabilizing heater is communicated with a water outlet of the pressure stabilizing heater 7, the other end of the water outlet pipeline is communicated with the water return section main pipeline 16, and a second flow meter 38, two eighth valves 36 and a first safety valve 37 are arranged on the water outlet pipeline 35 of the.
As shown in fig. 3, the cooling device 2 is composed of a cooler 40, a cooler water inlet pipeline 41 and a cooler water outlet pipeline 43, one end of the cooler water inlet pipeline 41 is communicated with a water inlet of the cooler 40, a cooler water inlet pipe orifice D1 at the other end of the cooler water inlet pipeline 41 is communicated with a cooler water inlet connector D on the first auxiliary pipeline 23, a second safety valve 47 and two ninth valves 42 are arranged on the cooler water inlet pipeline 41, one end of the cooler water outlet pipeline 43 is communicated with a water outlet of the cooler 40, a cooler water outlet pipe orifice C1 at the other end of the cooler water outlet pipeline 43 is communicated with a cooler water outlet connector C on the water return section main pipeline 16, and a sixth pressure gauge 44, a sixth temperature gauge 45 and two tenth valves 46 are arranged on the cooler water outlet pipeline 43.
As shown in fig. 4, the auxiliary heating device 3 is composed of a heater 48, a heater water inlet pipe 49, and a heater water outlet pipe 51, wherein one end of the heater water inlet pipe 49 is communicated with a water inlet of the heater 48, a heater water inlet pipe orifice E1 at the other end of the heater water inlet pipe 49 is communicated with a heater water inlet connection joint E on the water inlet section main pipe 8, an eleventh valve 50 is arranged on the heater water inlet pipe 49, one end of the heater water outlet pipe 51 is communicated with a water outlet of the heater 48, a heater water outlet pipe orifice F1 at the other end of the heater water outlet pipe 51 is communicated with a heater water outlet connection joint F on the water inlet section main pipe 8, and a seventh thermometer 52, a seventh pressure gauge 53 and a twelfth valve 54 are arranged on the heater water.
As shown in fig. 5, the test section pipeline 4 is composed of a test valve 55, a test pipeline 56 and a thirteenth valve 57, the test valve 55 is provided with a third differential pressure gauge 58, a test section pipeline water inlet pipe opening G1 on the test section pipeline 4 is communicated with a test section pipeline water inlet connecting joint G on the water inlet section main pipeline 8, and a test section pipeline water outlet pipe opening H1 is communicated with a test section pipeline water outlet connecting joint H on the water return section main pipeline 16, in conclusion, the main pipeline system 1, the cooling device 2, the auxiliary heating device 3 and the test section pipeline 4 form a cold and hot dual-purpose closed circulation system, the medium pressure in the system can reach 20 MPa at most, and the highest temperature is 350 ℃.
As shown in fig. 6, the water supply and supplement device 5 comprises a water tank 59, a water supply pump 60, a pressure pump 61, a water supply pump inlet pipe 62, a water supply pump outlet pipe 63, a pressure pump inlet pipe 65 and a pressure pump outlet pipe 67, wherein a fourteenth valve 64 is arranged on the water supply pump outlet pipe 63, a fifteenth valve 66 is arranged on the pressure pump inlet pipe 65, a check valve 68 and a stop check valve 69 are arranged on the pressure pump outlet pipe 67, wherein one end of the water supply pump inlet pipe 62 is communicated with the water tank 59, the other end is communicated with a water inlet of the water supply pump 60, one end of the water supply pump outlet pipe 63 is communicated with a water outlet of the water supply pump 60, a water supply pump outlet pipe orifice a1 at the other end of the water supply pump outlet pipe 63 is communicated with a water supply connection joint a on the water return section main pipeline 16, one end of the pressure pump inlet pipe 65 is communicated with, and a pressure pump water outlet pipe opening B1 at the other end of the pressure pump water outlet pipe 67 is communicated with a water supplementing connecting joint B on the water return section main pipeline 16.
The invention relates to a high-pressure cold and hot state test system for valves, which can perform performance tests of nuclear-grade valves such as manual and electric gate valves, ball valves, stop valves, check valves, control valves and the like under cold and hot states, and comprises the following steps: performing a sealing performance test, detecting internal leakage and external leakage of the valve, and measuring and taking parameters of leakage amount, time t and pressure P; performing cold and hot state performance cycle test, detecting the action performance of the valve in a cold state and a hot state (under working temperature and pressure), and measuring parameters such as temperature T, pressure P, time T, switching times N, stroke K and the like; the flow resistance test measures the flow resistance coefficient of the valve under the working temperature and the working pressure, and the measured parameters are the temperature T, the flow Q, the pressure difference delta P, the stroke K and the like; the flow capacity test is to detect the flow capacity of the valve under the working temperature and pressure conditions, and measure parameters such as temperature T, pressure P, flow Q, pressure difference delta P, stroke K and the like; the service life test is carried out, the service durability (opening and closing times) of the valve under the working temperature and pressure is measured, and the parameters are temperature T, pressure P, flow Q, pressure difference delta P, stroke K, opening and closing times N and the like; and (3) performing the action performance test of the whole valve under the water loss condition, namely placing the whole tested valve in a special container, wherein the pressure in the container is 1.8MPa, and the temperature is 210 ℃ of saturated steam, and performing the performance test of the whole valve.
When testing the testing valve, the testing valve 55 is arranged in the testing section pipeline 4 and is tested by a hydrostatic test, the water feeding pump is started to fill water and give up the testing system, the valve in the full-open testing system is used for exhausting air in the loop, the pressure stabilizing heater 7 is in a water solid state, after the water filling and air discharging are finished, the pressure pump 61 is started to pressurize the loop of the testing system, the main pump 6 circulation loop system is started, the heating system of the pressure stabilizing heater 7 is started to heat the loop of the testing system, the valve in the full-open testing system is used for circulating heat generated by the pressure stabilizing heater 7 in the loop of the testing system, when the temperature in the loop of the testing system reaches a preset temperature, the valves of each auxiliary loop are adjusted to enable the pressure and the temperature of the loop of the testing system to reach the required testing pressure and temperature, and then various performance tests of the testing valve are carried out, when the temperature exceeds the required test pressure and temperature, or when the cold-hot alternation test needs to be carried out in the test process, the test loop system can be cooled and depressurized through the cooling device 2, after the test is finished, the heating system of the voltage stabilizing heater 7 is closed, the main pump 6 continues to operate, the test loop system is cooled and depressurized by the cooling device 2, when the temperature of the test loop system is close to the normal temperature and the normal pressure, an exhaust valve and a drain valve on the test loop system are opened, and the test loop system is drained.
It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the invention.

Claims (10)

1. A high-pressure cold-hot state test system for a valve; the method is characterized in that: the device comprises a main pipeline system, a cooling device, an auxiliary heating device, a test section pipeline and a water supply and supplement device; the cooling device is connected with the main pipeline system, the auxiliary heating device is connected with the main pipeline system, the test section pipeline is connected with the main pipeline system, and the water supply and supplement device is connected with the main pipeline system; the main pipeline system, the cooling device, the auxiliary heating device and the test section pipeline form a cold and hot dual-purpose closed circulation system.
2. The high-pressure cold-hot state testing system for the valve according to claim 1, wherein: the main pipeline system comprises a main pump, a pressure stabilizing heater, a water inlet section main pipeline, a water return section main pipeline, a first auxiliary pipeline, a second auxiliary pipeline, a third auxiliary pipeline, a fourth auxiliary pipeline, a pressure stabilizing heater water inlet pipeline and a pressure stabilizing heater water outlet pipeline; the main pump is respectively connected with the water inlet section main pipeline and the water return section main pipeline, and the pressure stabilizing heater is respectively connected with the pressure stabilizing heater water inlet pipeline and the pressure stabilizing heater water outlet pipeline; the first auxiliary pipeline and the fourth auxiliary pipeline are respectively connected to the water inlet section main pipeline and the water return section main pipeline, the second auxiliary pipeline is connected to the first auxiliary pipeline and the water return section main pipeline, and the third auxiliary pipeline is connected to the first auxiliary pipeline and the water inlet section main pipeline; the water inlet section main pipeline is provided with a heater water inlet connecting joint, a heater water outlet connecting joint and a test section pipeline water inlet connecting joint, the water return section main pipeline is provided with a water supply connecting joint, a water supplementing connecting joint, a cooler water outlet connecting joint and a test section pipeline water outlet connecting joint, and the first auxiliary pipeline is provided with a cooler water inlet connecting joint; the water inlet connecting joint and the water outlet connecting joint of the heater are connected with the auxiliary heating device, the water inlet connecting joint and the water outlet connecting joint of the test section pipeline are connected with the test section pipeline, the water supply connecting joint and the water supplement connecting joint are connected with the water supply and supplement device, and the water inlet connecting joint and the water outlet connecting joint of the cooler are connected with the cooling device.
3. The high-pressure cold-hot state testing system for the valve according to claim 2, wherein: a first pressure gauge and a first thermometer are arranged on the main pipeline of the water inlet section close to the position of the water outlet end of the main pump, a second thermometer and a second pressure gauge are arranged on the main pipeline of the water inlet section close to the position of the water outlet connecting joint of the heater, and a third thermometer and a third pressure gauge are arranged on the main pipeline of the water inlet section close to the position of the water inlet connecting joint of the pipeline of the test section; the filter is arranged at a position, close to a water inlet end of the main pump, of the water return section main pipeline, the main pump and the filter are respectively provided with a first differential pressure gauge and a second differential pressure gauge, a fourth pressure gauge and a fourth temperature gauge are arranged at positions, close to a water outlet connector of the test section pipeline, of the water return section main pipeline, a first flow meter is arranged on the water return section main pipeline, and a first valve and a second valve are respectively arranged on the water inlet section main pipeline and the water return section main pipeline.
4. The high-pressure cold-hot state testing system for the valve according to claim 2, wherein: one end of the first auxiliary pipeline is communicated with the main pipeline of the water inlet section, the other end of the first auxiliary pipeline is communicated with the main pipeline of the water return section, and a third valve is arranged on the first auxiliary pipeline; one end of the second auxiliary pipeline is communicated with the first auxiliary pipeline, the other end of the second auxiliary pipeline is communicated with the main pipeline of the water return section, and a fourth valve is arranged on the second auxiliary pipeline; one end of the third auxiliary pipeline is communicated with the main pipeline of the water inlet section, the other end of the third auxiliary pipeline is communicated with the first auxiliary pipeline, and a fifth valve is arranged on the third auxiliary pipeline; one end of the fourth auxiliary pipeline is communicated with the water inlet section main pipeline, the other end of the fourth auxiliary pipeline is communicated with the water return section main pipeline, and a sixth valve is arranged on the fourth auxiliary pipeline.
5. The high-pressure cold-hot state testing system for the valve according to claim 2, wherein: one end of a water inlet pipeline of the pressure stabilizing heater is communicated with a water inlet of the pressure stabilizing heater, the other end of the water inlet pipeline of the pressure stabilizing heater is communicated with the first auxiliary pipeline, and a fifth thermometer, a fifth pressure gauge and a seventh valve are arranged on the water inlet pipeline of the pressure stabilizing heater; one end of the water outlet pipeline of the pressure stabilizing heater is communicated with the water outlet of the pressure stabilizing heater, the other end of the water outlet pipeline of the pressure stabilizing heater is communicated with the main pipeline of the water return section, and a second flowmeter, an eighth valve and a first safety valve are arranged on the water outlet pipeline of the pressure stabilizing heater.
6. The high-pressure cold-hot state testing system for the valve according to claim 1, wherein: the cooling device comprises a cooler, a cooler water inlet pipeline and a cooler water outlet pipeline, wherein one end of the cooler water inlet pipeline and one end of the cooler water outlet pipeline are respectively communicated with a water inlet and a water outlet of the cooler; a cooler water inlet pipe orifice at the other end of the cooler water inlet pipeline is communicated with a cooler water inlet connecting joint on the first auxiliary pipeline, and a cooler water outlet pipe orifice at the other end of the cooler water outlet pipeline is communicated with a cooler water outlet connecting joint on the main pipeline of the water return section; a second safety valve and a ninth valve are arranged on the water inlet pipeline of the cooler, and a sixth pressure gauge, a sixth temperature gauge and a tenth valve are arranged on the water outlet pipeline of the cooler.
7. The high-pressure cold-hot state testing system for the valve according to claim 1, wherein: the auxiliary heating device comprises a heater, a heater water inlet pipeline and a heater water outlet pipeline, wherein one end of the heater water inlet pipeline and one end of the heater water outlet pipeline are respectively communicated with a water inlet and a water outlet of the heater; a heater water inlet pipe orifice at the other end of the heater water inlet pipeline is communicated with a heater water inlet connecting joint on the water inlet section main pipeline, and a heater water outlet pipe orifice at the other end of the heater water outlet pipeline is communicated with a heater water outlet connecting joint on the water inlet section main pipeline; an eleventh valve is arranged on the water inlet pipeline of the heater, and a seventh thermometer, a seventh pressure gauge and a twelfth valve are arranged on the water outlet pipeline of the heater.
8. The high-pressure cold-hot state testing system for the valve according to claim 1, wherein: the test section pipeline comprises a test valve, a test pipeline and a thirteenth valve, the test valve and the thirteenth valve are connected to the test pipeline, and the test valve is provided with a third differential pressure gauge; the water inlet pipe orifice of the test section pipeline on the test section pipeline is communicated with the water inlet connecting joint of the test section pipeline on the water inlet section main pipeline, and the water outlet pipe orifice of the test section pipeline is communicated with the water outlet connecting joint of the test section pipeline on the water return section main pipeline.
9. The high-pressure cold-hot state testing system for the valve according to claim 1, wherein: the water supply and supplement device comprises a water tank, a water feed pump, a pressure pump, a water feed pump water inlet pipe, a water feed pump water outlet pipe, a pressure pump water inlet pipe and a pressure pump water outlet pipe, wherein a fourteenth valve is arranged on the water feed pump water outlet pipe, a fifteenth valve is arranged on the pressure pump water inlet pipe, and a check valve and a stop check valve are arranged on the pressure pump water outlet pipe; one end of a water inlet pipe of the water feed pump is communicated with the water tank, the other end of the water inlet pipe of the water feed pump is communicated with a water inlet of the water feed pump, one end of a water outlet pipe of the water feed pump is communicated with a water outlet of the water feed pump, and a water outlet pipe orifice of the water feed pump at the other end of the water outlet pipe of the water feed pump is communicated with a water supply connecting; one end of a water inlet pipe of the pressure pump is communicated with the water tank, the other end of the water inlet pipe of the pressure pump is communicated with a water inlet of the pressure pump, one end of a water outlet pipe of the pressure pump is communicated with a water outlet of the pressure pump, and a water outlet pipe orifice of the pressure pump at the other end of the water outlet pipe of the pressure pump is communicated with a water supplementing connecting joint on a main pipeline.
10. A test operation method of a high-pressure cold and hot state test system for a valve is characterized by comprising the following steps: the method comprises the following operation steps:
1) after the test valve is installed in a test section pipeline and is tested through a hydrostatic test, a water feeding pump is started to fill water in the test system and give up, the valve in the test system is fully opened to exhaust air in a loop, and the pressure stabilizing heater is in a water solid state;
2) after the water filling and the air discharging are finished, starting a pressurizing pump to pressurize a test system loop;
3) starting the main pump circulation loop system;
4) starting a heating system of the voltage-stabilizing heater to heat a loop of the test system, and fully opening a valve in the test system to enable heat generated by the voltage-stabilizing heater to circulate in the loop of the test system;
5) when the temperature in the loop of the test system reaches the preset temperature, adjusting the valves of the auxiliary loops to enable the pressure and the temperature of the loop of the test system to reach the required test pressure and temperature, and then testing various performances of the test valves;
6) when the loop pressure and temperature of the test system exceed the required test pressure and temperature, or when a cold-hot alternating test needs to be carried out in the test process, the temperature of the test loop system can be reduced and depressurized through the cooling device;
7) after the test is finished, the heating system of the pressure stabilizing heater is closed, the main pump continues to operate, and the cooling device 2 is used for cooling and reducing the pressure of the test system loop;
8) and when the temperature of the test system loop is close to normal temperature and normal pressure, opening an exhaust valve and a drain valve on the test system loop to drain the test system loop.
CN202011466551.9A 2020-12-14 2020-12-14 High-pressure cold and hot state test system for valve Pending CN112539931A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
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Publication number Priority date Publication date Assignee Title
CN117740273A (en) * 2024-02-19 2024-03-22 永忠工程管理(集团)有限公司 Supply and drainage pipe testing device for plateau cold zone
CN117740273B (en) * 2024-02-19 2024-05-03 永忠工程管理(集团)有限公司 Supply and drainage pipe testing device for plateau cold zone

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