CN214502878U

CN214502878U - Governing valve test bench system

Info

Publication number: CN214502878U
Application number: CN202120779505.8U
Authority: CN
Inventors: 张鹏; 石洋; 胡服全; 陈修高; 余慧莺
Original assignee: State Power Investment Group Science and Technology Research Institute Co Ltd
Current assignee: State Power Investment Group Science and Technology Research Institute Co Ltd
Priority date: 2021-04-15
Filing date: 2021-04-15
Publication date: 2021-10-26
Anticipated expiration: 2031-04-15

Abstract

The utility model provides a governing valve test bench system, include: the system comprises a test section system, a water supply system, an air supply system, a cooling system and an instrument control system; the test section system is used for installing a regulating valve to be tested; the water supply system is communicated with the test section system; the gas supply system is communicated with the test section system; the cooling system is used for cooling the test section system, the water supply system and the gas supply system; and the test section system, the water supply system, the gas supply system and the cooling system are all electrically connected with the instrument control system. The adjusting valve is simultaneously provided with the water supply system and the gas supply system, so that the adjusting valve test bed system can adapt to the test of different adjusting valves, the applicable range of the test bed is greatly improved, the test bed can be basically suitable for all adjusting valves in the domestic nuclear power field, and the accuracy of the test result is high.

Description

Governing valve test bench system

Technical Field

The utility model relates to a nuclear power test field, concretely relates to governing valve test bench system.

Background

The regulating valve, which is the most commonly used control element in the process control of a nuclear power plant, plays an extremely important role in the process control, and mainly functions to control and regulate the flow, pressure, temperature, flow direction and the like of a medium in a pipeline. The regulating valve receives the signal and changes the opening of the valve according to the output of the regulator, thereby regulating the operation parameters of the nuclear power station. The nuclear power plant key regulating valve generally has the characteristics of large caliber, high working parameters and high control quality requirement, and is very important in the aspects of guaranteeing normal operation of the nuclear power plant and controlling accident consequences. For example, a main water supply regulating valve which is very important in a main water supply system has the main function of maintaining the secondary side water level of a steam generator in a required range, can play a role in quick isolation under the condition of a power station accident, is one of key control valves of a nuclear power station, and plays a very important role in ensuring the power generation and safe operation of the nuclear power station. The particularity of the working environment of the nuclear power valve puts forward the requirements of the nuclear power valve on the working performance, stability, reliability and the like which are far higher than those of common industrial equipment.

The nuclear power valve industry in China starts late, has a certain gap compared with foreign countries, and particularly, part of the nuclear power valves with high technical content and large manufacturing difficulty need to be imported from foreign countries. However, the valve which has been developed in the domestic autonomous manner does not have a related test rack and test conditions in the domestic autonomous manner, and the performance of the valve cannot be fully verified before the nuclear power station is installed, so that the valve cannot be purchased. Therefore, the blank of the domestic technology needs to be filled, and a test facility meeting the test requirement of the nuclear power key regulating valve is built. The method has the advantages that various main technical indexes such as working performance, stability and reliability of the regulating valve can be fully tested and tested in the development process of the domestic nuclear power key regulating valve, unexpected problems in the development and manufacturing processes of the regulating valve can be exposed in advance, the engineering period of the regulating valve is shortened, the engineering risk of the domestic regulating valve directly used in a nuclear power station field is reduced, a basis can be provided for design improvement of the regulating valve, and the overall level of the nuclear power regulating valve industry in China is improved.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the background art.

To this end, an embodiment of the present invention provides a regulator valve test bed system, including:

the test section system is used for installing a regulating valve to be tested;

the water supply system is communicated with the test section system and is used for conveying water with preset pressure, temperature and flow to the test section system;

the gas supply system is communicated with the test section system and is used for conveying gas with preset pressure, temperature and flow to the test section system;

the cooling system is used for cooling the test section system, the water supply system and the gas supply system;

the instrument control electricity system, test section system, water supply system, gas supply system and cooling system all with the instrument control electricity system electricity is connected, the instrument control electricity system be used for doing test section system, water supply system, gas supply system and cooling system carry electric control signal.

The adjusting valve is simultaneously provided with the water supply system and the gas supply system, so that the adjusting valve test bed system can adapt to the test of different adjusting valves, the applicable range of the test bed is greatly improved, the test bed can be basically suitable for all adjusting valves in the domestic nuclear power field, and the accuracy of the test result is high.

Optionally, the test section system comprises a test pipeline, and a regulating valve mounting part, an upstream throttle valve, a downstream throttle valve, a first temperature measuring device, a first flow meter and a first pressure testing device which are arranged on the test pipeline,

the utility model discloses a test device for testing the flow of gas, including governing valve installation department, governing valve installation department is used for installing the governing valve of examination to await measuring, upper reaches choke valve, a temperature measuring device and first flowmeter all are located the upper reaches of governing valve installation department, the low reaches choke valve is located the low reaches of governing valve installation department, first pressure test device's quantity is two at least, install one at least in the upper reaches and the low reaches of governing valve installation department first pressure test device.

Optionally, the quantity of first pressure test device is two, is located the first pressure test device distance of governing valve installation department upper reaches the distance of governing valve installation department is L1, is located the first pressure test device distance of governing valve installation department lower reaches the distance of governing valve installation department is L2, the nominal size of the governing valve of examination of awaiting measuring is d, L1, L2 and d satisfy following condition:

L1＝2d，L2＝6d。

optionally, the water supply system comprises a water supplementing system and a circulating water supply system, a water outlet and a water inlet of the circulating water supply system are respectively communicated with a water inlet and a water outlet of the test section system, and the water supplementing system is communicated with the circulating water supply system.

Optionally, the circulating water supply system includes at least one circulating water branch, the circulating water branch includes circulating pump and the first check valve of intercommunication each other, the circulating pump with the outlet intercommunication of test section system, first check valve with the water inlet intercommunication of test section system.

Optionally, the circulating water branch further comprises a second check valve, and the circulating pump, the first check valve and the second check valve are sequentially communicated;

the cooling system includes at least one heat exchanger disposed on the conduit between the first check valve and the second check valve.

Optionally, the circulating water branch further includes a circulating bypass pipeline, the first check valve is a three-way valve, a water inlet of the circulating bypass pipeline is communicated with a water outlet of the three-way valve, and a water outlet of the circulating bypass pipeline is communicated with a pipeline between the heat exchanger and the second check valve.

Optionally, the water charging system comprises a water charging tank and a water charging pump which are communicated with each other, and the water charging pump is communicated with the circulating water supply system.

Optionally, the regulating valve test bed system further comprises a pressure stabilizing system, and the pressure stabilizing system is communicated with the circulating water supply system.

Optionally, the gas supply system comprises an air compressor, a buffer tank, a filtering and drying system and a gas storage tank which are sequentially communicated, and the gas storage tank is communicated with the test section system;

and a second temperature measuring device, a second flowmeter, a second pressure testing device and a pressure regulating valve are arranged on a pipeline between the gas storage tank and the test section system.

Drawings

FIG. 1 is a schematic diagram of a regulator valve test stand system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a test section system according to an embodiment of the present invention;

fig. 3 is a schematic view of the position of the pressure tapping in an embodiment of the present invention;

fig. 4 is a schematic diagram of an air supply system 30 according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

Referring to fig. 1, the present embodiment provides a regulator valve test stand system including: test section system 10, water supply system 20, air supply system 30, cooling system and instrument control electrical system.

The test section system is used for installing a regulating valve 1 to be tested; the water supply system 20 is communicated with the test section system 10 and is used for conveying water with preset pressure, temperature and flow rate to the test section system; the gas supply system 30 is communicated with the test section system 10 and is used for supplying gas with preset pressure, temperature and flow rate to the test section system 10; the cooling system is used for cooling the test section system, the water supply system and the gas supply system; the test section system 10, the water supply system 20, the gas supply system 30 and the cooling system are all electrically connected with an instrument control system which is used for transmitting electric control signals for the test section system 10, the water supply system 20, the gas supply system 30 and the cooling system. Specifically, the test section system 10, the water supply system 20 and the air supply system 30 may be provided with electromagnetic valves, developed electrical components and the like, and the start of the electrical components is controlled by an instrument control system. In the use process of the test section system 10, the water supply system 20 and the air supply system 30, aiming at the test of different regulating valves, the media conveyed by the regulating valves may be different, and the temperature may also be different, so that when other regulating valves are replaced after one regulating valve is tested, the pipeline may need to be cooled, and the cooling system can be applied to any condition needing cooling, and is not limited to the condition of replacing the regulating valve.

In the above scheme, the test section system 10 and the gas supply system 30 can be communicated through the quick connector, and the test section system 10 and the water supply system 20 can also be communicated through the quick connector, so that flexible application of each part is ensured, systems, branch systems or equipment can be increased or decreased on line according to test requirements, and optimization of resource utilization rate is realized on the basis of ensuring test availability and accuracy.

In the above solution, the water supplied by the water supply system 20 with the predetermined pressure, temperature and flow rate may be demineralized water. Other liquid media can be used, that is, "water" herein can be used for expanded explanation, and the expanded range can be extended to the liquid media which can be conveyed in the pipeline in the nuclear power test field.

The adjusting valves are simultaneously provided with the water supply system 20 and the gas supply system 30, so that the detectable adjusting valves of the adjusting valve test bed can be more in types, corresponding tests can be carried out on different adjusting valves only by replacing the communication ports of the test section system 10 or the conveying media of the water supply system 20, and the applicable range of the test bed is greatly enlarged. Through tests, the maximum water supply flow of the regulating valve test stand provided by the embodiment is 5200m³H, the highest working pressure is 3MPa, the highest working temperature is 150 ℃, the maximum pressure difference between the front and the rear of the valve at the test section is 2.2MPa, the device can be basically suitable for all regulating valves in the field of domestic nuclear power, and the accuracy of the test resultHigh.

In some specific embodiments, in conjunction with fig. 2, the test section system 10 includes a test line 11 and a regulator valve mount 12, an upstream throttle 13, a downstream throttle 14, a first temperature measuring device 15, a first flow meter 16, and a first pressure testing device 17 disposed on the test line 11; the regulating valve mounting part 12 is used for mounting the regulating valve 1 to be tested, the upstream throttling valve 13, the first temperature measuring device 15 and the first flow meter 16 are all located on the upstream of the regulating valve mounting part 12, the downstream throttling valve 13 is located on the downstream of the regulating valve mounting part 12, the number of the first pressure testing devices 17 is at least two, and at least one first pressure testing device 17 is mounted on the upstream and the downstream of the regulating valve mounting part 12. The upstream throttle valve 13 and the downstream throttle valve 14 are used at the time of installing the regulating valve 1 to be tested while closing the upstream throttle valve 13 and the downstream throttle valve 14, and then the regulating valve 1 to be tested is installed while opening the upstream throttle valve 13 and the downstream throttle valve 14. The first temperature measuring device 15 is used to measure the temperature in the test line 11, the first flow meter 16 is used to measure the flow rate of the conveyed medium, and the first pressure measuring device 17 is used to measure the pressure in the test line 11.

Further, with reference to fig. 3, the number of the first pressure testing devices 17 is two, two pressure taking ports 171 are provided on the test pipeline 11, and the two first pressure testing devices 17 are all installed on the test pipeline 11 through the pressure taking ports 171. The first pressure testing device 17 located upstream of the regulating valve mount 12 is at a distance L1 from the regulating valve mount 12, the first pressure testing device 17 located downstream of the regulating valve mount 12 is at a distance L2 from the regulating valve mount 12, the nominal size of the regulating valve 1 to be tested is d, L1, L2 and d satisfy the following conditions:

L1＝2d，L2＝6d。

the minimum diameter d of the pressure extraction port 171 is 3mm, the maximum diameter d is 12mm, and the diameters of the pressure extraction ports 171 at the upstream and downstream are consistent. The pressure tap 171 of the test system has smooth edges, no burrs, no linear edges or other irregular shapes, and no pipe fittings in the pipeline are allowed to protrude.

With further reference to FIG. 1, in some embodiments, the water supply system 20 includes a water replenishment system 21 and a recirculating water supply system 22, and the water outlet and water inlet of the recirculating water supply system 22 are in communication with the water inlet and water outlet of the test section system 10, respectively, i.e., the recirculating water supply system 22 and the test section system 10 form a closed loop. The water replenishing system 21 is communicated with the circulating water supply system 22. The main function of the water replenishing system 21 is to replenish lost water for the circulating water supply system 22, so as to ensure that the water amount in the circulating water supply system 22 is sufficient. The regulating valve test bed in the embodiment adopts a closed circulation design, is different from a common normal-temperature normal-pressure open-type loop design mode, and can better simulate the test conditions of higher temperature and higher pressure of a nuclear power station.

Specifically, circulating water supply system 22 includes at least one circulating water branch road, and the circulating water branch road includes circulating pump 221 and the first check valve 222 of intercommunication each other, and circulating pump 221 communicates with the outlet of test section system 10, and first check valve 222 communicates with the water inlet of test section system 10, and circulating pump 221 is used for providing power for the water cycle.

Further, the circulating water branch further comprises a second check valve 223, and the circulating pump 221, the first check valve 222 and the second check valve 223 are sequentially communicated; the cooling system comprises at least one heat exchanger 41, the heat exchanger 41 being arranged in the line between a first check valve 222 and a second check valve 223. The liquid or gas in the circulating water branch can exchange heat when flowing through the position of the heat exchanger 41, so that the required temperature can be obtained in the test section system 10.

Further, the circulating water branch further includes a circulation bypass pipe 224, the first check valve 222 is a three-way valve, an inlet of the circulation bypass pipe 224 is communicated with an outlet of the three-way valve, and an outlet of the circulation bypass pipe 224 is communicated with a pipe between the heat exchanger 41 and the second check valve 223. Through controlling the three-way valve, the conveying medium can be controlled to only pass through the circulation bypass pipeline 224, so that the heat exchange of the heat exchanger 41 is not performed, and a communication pipeline of the three-way valve can be selected by a person skilled in the art according to requirements in the actual application process.

In this embodiment, the circulating water supply system 22 includes 6 circulating water branches, the main function of which is to provide the required temperature, pressure and flow to the test section system 10And (4) desalting water. For satisfying the crucial main feed water governing valve thermal state performance test demand of nuclear power, adopt the parallelly connected mode of changeable six (4 lower lift branch roads and 2 higher lift branch roads are constituteed), switch through the eight characters blind plate between low lift branch road and high lift branch road, can only supply water with 4 lower lift branch roads during the low lift operating mode, can only supply water with 2 higher lift branch roads during the high lift operating mode, can supply water with 6 branch roads simultaneously during the large-traffic operating mode. Through the flexible switching configuration of branch road, can satisfy large-traffic test requirement, can satisfy the high pressure difference test requirement again, when having satisfied the harsh operating mode requirement of valve test, promoted the variety of rack parameter and reduced the rack cost. The maximum design flow of the circulating water supply system 22 can reach 5200m³H, the maximum working temperature is 150 ℃, and the maximum working pressure is 3.0 MPa.

In the present embodiment, the water replenishing system 21 includes a water replenishing tank 211 and a water replenishing pump 212 that are communicated with each other, and the water replenishing pump 212 is communicated with the circulating water supply system 22. Specifically, the make-up water pump 212 is communicated with the water inlet end of the circulating pump 221.

The regulating valve test bed system provided by the embodiment further comprises a pressure stabilizing system 50, wherein the pressure stabilizing system 50 is communicated with the circulating water supply system 22, and the pressure stabilizing system 50 comprises a pressure stabilizer. In order to achieve an effective control of the pressure in the recirculating water supply 22, the pressurizer is used, on the one hand, to absorb and release changes in the volume of water in the circuit due to temperature and load changes, and, on the other hand, to counteract pressure fluctuations that may occur during operation of the circuit, stabilizing the operating pressure throughout the recirculating circuit.

Referring to fig. 4, in some embodiments, the air supply system 30 includes an air compressor 31, a buffer tank 32, a filtering and drying system 33, and an air storage tank 34, which are sequentially connected, and the air storage tank 34 is connected to the test section system 10; a second temperature measuring device, a second flowmeter, a second pressure testing device and a pressure regulating valve are arranged on a pipeline between the air storage tank 34 and the test section system 10. The air compressors 31 may be provided in plurality as required, and the filtering and drying system 33 includes a filtering device and a drying device. The air supply system 30 may be of an open design, i.e. the air flowing through the test body is vented directly to the atmosphere.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A regulator valve test rig system, comprising:

the test section system is used for installing a regulating valve to be tested;

and the instrument control system is used for transmitting electric control signals to the test section system, the water supply system, the gas supply system and the cooling system.

2. The conditioning valve test rig system of claim 1, wherein the pilot stage system includes a pilot line and a conditioning valve mount, an upstream throttle valve, a downstream throttle valve, a first temperature measuring device, a first flow meter, and a first pressure testing device disposed on the pilot line,

3. The regulator valve test stand system of claim 2, wherein the first pressure test device is two in number, the first pressure test device upstream of the regulator valve mount is at a distance L1 from the regulator valve mount, the first pressure test device downstream of the regulator valve mount is at a distance L2 from the regulator valve mount, the regulator valve to be tested has a nominal size d, and L1, L2, and d satisfy the following conditions:

L1＝2d，L2＝6d。

4. the conditioning valve test rig system of claim 1, wherein the water supply system comprises a water replenishment system and a circulating water supply system, the water discharge and water inlet of the circulating water supply system being in communication with the water inlet and water discharge of the test section system, respectively, the water replenishment system being in communication with the circulating water supply system.

5. A conditioning valve test rig system according to claim 4, wherein the circulating water supply system comprises at least one circulating water branch comprising a circulating pump and a first check valve in communication with each other, the circulating pump being in communication with the water outlet of the test section system, the first check valve being in communication with the water inlet of the test section system.

6. The conditioning valve test rig system of claim 5, wherein the circulating water branch further comprises a second check valve, the circulating pump, first check valve and second check valve being in communication in sequence;

7. The conditioning valve test rig system of claim 6, wherein the circulating water branch further comprises a circulation bypass conduit, the first check valve is a three-way valve, an inlet of the circulation bypass conduit communicates with an outlet of the three-way valve, and an outlet of the circulation bypass conduit communicates on a line between the heat exchanger and the second check valve.

8. The conditioning valve test rig system of claim 4, wherein the water replenishment system comprises a water replenishment tank and a water replenishment pump in communication with each other, the water replenishment pump being in communication with the circulating water supply system.

9. The regulator valve test stand system of claim 4, further comprising a pressure stabilization system in communication with the circulating water supply.

10. The regulating valve test bench system according to claim 1, wherein the gas supply system comprises an air compressor, a buffer tank, a filtering and drying system and a gas storage tank which are communicated in sequence, and the gas storage tank is communicated with the test section system;