CN116263367A - A portable intelligent valve sealing performance test device - Google Patents

Abstract

The invention belongs to the technical field of valve tightness test detection and maintenance, and particularly relates to a portable intelligent valve tightness test device. The device comprises a water pump and water tank module, a liquid drive pressurizing module, an exhaust/drainage module, an electric control module, a valve and instrument module, a water pumping module and an upper computer; the water pump is connected with the water tank module and the valve and the instrument module, the liquid drive pressurizing module and the valve are connected with the instrument module, the valve is connected with the instrument module and the exhaust/drainage module, the exhaust/drainage module is connected with the valve cavity, the electric control module is connected with the water pump and the water tank module, the liquid drive pressurizing module, the exhaust/drainage module, the valve and the instrument module, the water pumping module and the upper computer, and the upper computer is connected with the electric control module. The advantages are that: the leakage rate of the valve is automatically and accurately quantitatively analyzed and calculated, and the qualification evaluation is automatically carried out on the sealing performance of the valve, so that the maintenance quality of the valve is ensured, and the running safety and economic index of the nuclear power plant unit are ensured.

Description

A portable intelligent valve sealing performance test device

technical field

The invention belongs to the technical field of valve sealing test detection and maintenance, and in particular relates to a portable intelligent valve sealing performance test device.

Background technique

Valves are widely used in nuclear power plants and are used in various system pipelines, mainly for fluid cutoff, isolation or regulation. The sealing performance of valves is a key concern of nuclear power plants, especially some gate valves and check valves on the isolation boundary. The quality of the sealing performance directly affects the safe, reliable and economical operation of nuclear power plants. Integrity of the boundary, adversely affecting the safety of the nuclear power plant.

Elimination of valve leakage is a key concern in the operation and maintenance of nuclear power plants. Limited by technical conditions and considering the high risk of on-site work, most nuclear power plants in China currently basically adopt the tradition of valve dismantling and grinding + blue oil test during overhaul. The maintenance method and the quality of maintenance largely depend on the skill level of the maintenance personnel, and whether the valve is qualified after maintenance can only be verified by performing a system tightness pressure test during the boosting period of the unit. Once the test fails, the unit The state will have to retreat, seriously affecting the crew safety and economic indicators.

The most intuitive and effective method for valve leak detection is the sealing performance test. By simulating the pressure conditions during valve operation on site, the pressurized medium is injected into the valve cavity when the valve is closed. If the sealing performance test shows that the valve does not leak, the integrity of the valve sealing structure can be ensured, thereby ensuring the sealing performance of the valve.

At present, the valve sealing performance test device that is widely used in domestic nuclear power plants is the OPERA gate valve pressure tool imported from France's Phramatome, but this tool is expensive and has a low degree of intelligence. It adopts an integrated centralized cabinet design. Large volume and heavy weight make it inconvenient to transport and carry, which limits the popularization and application of the device; and imported check valve pressing tools have not been introduced in China. A domestic nuclear power plant united with a professional technology company to develop a gate valve and check valve pressure system, but it has problems such as poor system stability, low measurement accuracy, complicated operation, large volume, and inconvenient transportation in the actual use of nuclear power plants. Power plant abandoned.

Contents of the invention

The purpose of the present invention is to provide a portable intelligent valve sealing performance test device. Through the modular structure, the valve sealing test device designed by the traditional integrated centralized cabinet is modularized according to the structure and function, highlighting the portability and lightness. Quantitative features, designed as a number of different portable functional modules, convenient for two people to carry and carry on site, each module can be quickly connected through cables and high-pressure hoses to form a complete system and put into use.

The technical solution of the present invention is as follows: a portable intelligent valve sealing performance test device, including a water pump and water tank module, a liquid drive booster module, an exhaust/drainage module, an electrical control module, a valve and instrument module, a pumping module and a host computer ; The water pump is connected to the water tank module and the valve is connected to the instrument module, the liquid drive booster module and the valve are connected to the instrument module, the valve is connected to the instrument module and the exhaust/drainage module, the exhaust/drainage module is connected to the valve cavity, and the electrical The control module is connected with the water pump and water tank module, the liquid drive booster module, the exhaust/drainage module, the valve and instrument module, the pumping module and the upper computer, and the upper computer is connected with the electrical control module.

The water pump and water tank module includes a water injection pump, a manual isolation valve, a filter, a one-way valve and a water tank, and the external interface of the module includes a first water outlet interface, a first water return interface, a second water return interface, a sewage discharge interface and a power supply interface , the water pump and the water outlet interface of the water tank module are connected with the valve and the water pump interface of the instrument module through a high-pressure hose; 2. The pressure relief and exhaust port is connected, the sewage discharge port is connected with the sewage discharge hose for sewage discharge, and the power supply port is connected with the water pump power port of the pressure relief and exhaust port through a cable.

The hydraulic drive booster module includes an integrated hydraulic station and a booster cylinder, and the external interface of the module includes a hydraulic output interface, a power supply interface and a signal output interface; the hydraulic output interface of the liquid drive booster module is connected to the The instrument module is connected to the pressurized interface, the power interface is connected to the power interface of the hydraulic station of the electrical control module through a cable, and the signal output interface is connected to the signal acquisition interface of the electrical control module through a cable.

The valve and instrument module includes accumulators, electric ball valves, manual ball valves, safety valves, pressure gauges and temperature sensors, and the external interfaces of the module include signal output interfaces, booster interfaces, water pump interfaces, first pressure relief and exhaust interfaces, The second pressure relief exhaust interface and hydraulic output interface; the signal output interface is connected to the signal acquisition interface of the electrical control module through a cable, and the hydraulic output interface is connected to the hydraulic input interface of the exhaust/drainage module through a high-pressure hose.

The exhaust/drainage module includes a pressure gauge, a manual ball valve, a one-way valve and a push-in connector, and the external interface of the module includes a signal output interface, a drainage/exhaust interface, a valve cavity test interface and a hydraulic input interface; the signal output The interface is connected to the signal acquisition interface of the electrical control module through a cable, one of the drainage/exhaust interfaces is connected to the waste liquid barrel through a hose, and the other is connected to the pumping interface of the pumping module through a hose, and the valve cavity test interface is connected to the valve through a high-pressure hose Cavity interface connection.

The electrical control module includes a PLC acquisition controller, a power supply, an emergency stop control button and other related electrical components, and the external interface of the module includes a water pump power interface, a hydraulic station power interface, a first signal acquisition interface, a second signal acquisition interface, The third signal acquisition interface, the water pump power interface, the power supply interface and the network interface; the power supply interface is connected to an external 220VAC power supply through a power line, and the network interface is connected to an upper computer through a network cable.

The water pumping module includes a water pump, a manual ball valve and a connecting hose, and the external interface of the module includes a water pumping interface, a drainage interface and a power supply interface; the drainage interface is connected to the waste liquid bucket through a hose, and the power supply interface is connected to the electrical control module through a cable Water pump power interface connection.

The beneficial effects of the present invention are: combined with high-precision liquid drive pressurization control technology, advanced sensor detection technology and high-precision data acquisition and control technology, through modular design, the traditional integrated centralized cabinet design of the valve sealing test device , divided into modules according to the structure and function, highlighting the characteristics of portability and light weight, designed into a number of different portable functional modules, convenient for two people to carry and carry on site, each module can be quickly connected into a complete system through cables and high-pressure hoses use. When in use, simulate the actual operating pressure of the valve, inject the pressurized medium into the valve cavity, stably control the test pressure increase rate, accurately detect and display the test pressure drop data and curve of the valve; pioneering the use of accumulators for pressure stabilization and leakage Compensation function, combined with advanced software calculation and analysis algorithm, automatically and accurately and quantitatively analyze and calculate the leakage rate of the valve, and automatically evaluate the sealing performance of the valve, so as to ensure the maintenance quality of the valve and the safety of the operation of the nuclear power plant unit and economic indicators.

Description of drawings

Fig. 1 is a kind of portable intelligent valve sealing performance testing device system connection block diagram of the present invention;

Fig. 2 is a working schematic diagram of a portable intelligent valve sealing performance testing device system of the present invention.

In the figure, 101 is the first water outlet interface, 102 is the first water return interface, 103 is the second water return interface, 104 is the sewage discharge interface, 105 is the power supply interface, 201 is the hydraulic pressure output interface, 202 is the power supply interface, 203 is the signal output interface, 301 is the signal output interface, 302 booster interface, 303 water pump interface, 304 first pressure relief exhaust interface, 305 second pressure relief exhaust interface, 306 hydraulic output interface, 401 signal output interface, 402 drainage/exhaust interface, 403 valve chamber test interface, 404 hydraulic input interface, 501 pump power interface, 502 hydraulic station power interface, 503 first signal acquisition interface, 504 second signal acquisition interface, 505 third signal acquisition interface, 506 pump power interface, 507 power supply interface, 508 network interface , 601 pumping interface, 602 drainage interface, 603 power interface.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, a portable intelligent valve sealing performance test device includes a water pump and water tank module, a liquid drive booster module, an exhaust/drainage module, an electrical control module, a valve and instrument module, a pumping module and a host computer; The water pump is connected to the water tank module, the valve is connected to the instrument module, the liquid drive booster module and the valve are connected to the instrument module, the valve is connected to the instrument module and the exhaust/drainage module is connected, and the exhaust/drainage module is connected to the valve cavity through the special interface for valve sealing test , to provide a passage for the pressurized medium to enter the valve cavity and system exhaust/drainage, and to empty the test medium in the valve cavity to the waste liquid bucket through the pumping module after the test is over. The valve that does not need to be drained for the test medium does not need to use pumping module; the electrical control module is connected with the water pump and water tank module, the liquid drive pressurization module, the exhaust/drainage module, the valve and the instrument module, the pumping module and the host computer through cables, and is used to collect the system pressure and temperature. The boosting rate is adjusted and controlled, the system overpressure is controlled by emergency shutdown protection, and the valve cavity test medium is emptied after the test to restore the initial state of the valve; the upper computer is connected to the electrical control module through Ethernet or WIFI to provide The control module issues control signals, the control system boosts the pressure steadily, analyzes, processes and displays the collected data, obtains the valve leakage rate and related parameter curves, and provides alarm prompts and protection for system abnormalities.

The water pump and water tank module includes a water injection pump, a manual isolation valve, a filter, a one-way valve and a water tank, and the external interface of the module includes a water outlet interface 101, a first water return interface 102, a second water return interface 103, a sewage discharge interface 104 and a power supply Interface 105.

The hydraulic pressure boosting module includes an integrated hydraulic station and a booster cylinder, and the external interfaces of the module include a hydraulic output interface 201 , a power supply interface 202 and a signal output interface 203 .

The valve and instrument module includes accumulators, electric ball valves, manual ball valves, safety valves, pressure gauges and temperature sensors. interface 304 , first pressure relief and exhaust interface 305 and hydraulic output interface 306 .

The exhaust/drainage module includes a pressure gauge, a manual ball valve, a one-way valve and a push-in connector. The external interface of the module includes a signal output interface 401 , a drain/exhaust interface 402 , a check valve pressure interface 403 and a hydraulic input interface 404 .

The electrical control module includes a PLC acquisition controller, a power supply, an emergency stop control button and other related electrical components, and the external interface of the module includes a water pump power interface 501, a hydraulic station power interface 502, a first signal acquisition interface 503, and a second signal acquisition interface. interface 504 , third signal acquisition interface 505 , water pump power interface 506 , power supply interface 507 and network interface 508 .

The pumping module includes a pump, a manual ball valve and a connecting hose, and the external interface of the module includes a pumping interface 601 , a drainage interface 602 and a power interface 603 .

The water pump is connected to the water outlet interface 101 of the water tank module through a high-pressure hose, the valve, and the water pump interface 303 of the instrument module. The interface 304 is connected with the second pressure relief exhaust interface 305, the water pump and the water tank module sewage discharge interface 104 are connected with the sewage hose for sewage discharge, the water pump and the water tank module power interface 105 are connected with the electrical control module water pump power interface 501 through a cable.

The hydraulic output interface 201 of the liquid drive booster module is connected to the valve and the instrument module booster interface 302 through a high-pressure hose, and the power interface 202 of the liquid drive booster module is connected to the electrical control module hydraulic station power interface 502 through a cable. The pressure module signal output interface 203 is connected to the electrical control module signal acquisition interface 503 through a cable.

The signal output interface 301 of the valve and instrument module is connected to the signal acquisition interface 504 of the electrical control module through a cable, and the hydraulic output interface 306 of the valve and instrument module is connected to the hydraulic input interface 404 of the exhaust/drainage module through a high-pressure hose.

The signal output interface 401 of the exhaust/drainage module is connected to the signal acquisition interface 505 of the electrical control module through a cable. The water pumping module is connected to the pumping interface 601, and the exhaust/drainage module valve cavity test interface 403 is connected to the valve cavity interface through a high-pressure hose.

The electrical control module power supply interface 507 is connected to an external 220VAC power supply through a power cord, and the electrical control module network interface 508 is connected to an upper computer through a network cable.

The drainage interface 602 of the pumping module is connected to the waste liquid barrel through a hose, and the power interface 603 of the pumping module is connected to the water pump power interface 506 of the electrical control module through a cable.

As shown in Figure 2, when the present invention is working, the pressing device is connected to the special interface for the valve sealing test through a high-pressure hose to provide the test medium and test pressure for the valve; Set parameters such as pressure and test time, collect data changes during the test in real time, and automatically analyze and record the results of the sealing performance test; after the test, the test medium in the valve chamber is emptied to the waste liquid bucket through the pumping module for recovery. The initial state of the valve.

The steps of using a portable intelligent valve sealing performance test device of the present invention are as follows:

Step 1: Close the valve. If the nozzle downstream of the valve cavity needs to be blocked, the sealing plug should be installed reliably, so that the sealing surface of the valve and the valve cavity form a closed chamber. Remove the plug of the special test interface of the test valve, install the matching quick connector for the test, and use a high-pressure hose to connect the pressure output port of the test device with the test interface of the valve cavity firmly;

Step 2: After the pressing device is connected, power on the device, turn the manual/automatic switching knob on the electrical control module of the sealing test device to the manual position, manually start the water injection pump to fill the valve chamber with water, and start the hydraulic station after the valve chamber is filled with water Raise the test circuit to a certain pressure, use the high-level exhaust valve and exhaust/drainage device on the valve and instrument module to perform high-level exhaust on the entire circuit and exhaust the valve nearby and release the pressure. The pressurization and depressurization process can also be operated through the upper computer through automatic control;

Step 3: Enter the relevant information of the tested valve (such as valve nominal pressure, nominal diameter, etc.) and test parameters (such as test pressure, test time, acceptance pressure, allowable pressure drop, leakage rate acceptance criteria, etc.) in the host computer . Operate the data acquisition software in the automatic control mode to start the pump and boost the pressure. When the system detects that the pressure value in the pipeline of the valve and the instrument module reaches the set test pressure, the system automatically closes the electric ball valve in the valve and the instrument module. After 1 minute of voltage stabilization, the system automatically enters the pressure-holding detection stage. After the pressure-holding time is over, the system will automatically record the test curve and data, and display the test results. After the test, the upper computer automatically relieves the pressure, and the electric ball valve on the pipeline of the valve and the instrument module automatically opens to complete the pressure relief. There are safety valves on the valves of the pressure device and the pipeline of the instrument module. When the test pressure is higher than the protection pressure, the system will automatically protect and relieve the pressure;

Step 4: In the upper computer, the valve information can be managed (creation, editing, deletion, etc.), the previous pressure test data and curves can be played back, the test curve can be auxiliary analyzed and marked, and the test report can be automatically generated , to automatically evaluate the test results;

Step 5: After the test, if there is a seal blockage installed at the nozzle downstream of the valve cavity, the test medium in the valve cavity can be emptied to the waste liquid bucket through the pumping module, and the seal blockage can be taken out from the valve cavity, and the valve can be restored to its original state .

Claims (7)

1. A portable intelligent valve sealing performance test device is characterized in that: the device comprises a water pump and water tank module, a liquid drive pressurizing module, an exhaust/drainage module, an electric control module, a valve and instrument module, a water pumping module and an upper computer; the water pump is connected with the water tank module and the valve and the instrument module, the liquid drive pressurizing module and the valve are connected with the instrument module, the valve is connected with the instrument module and the exhaust/drainage module, the exhaust/drainage module is connected with the valve cavity, the electric control module is connected with the water pump and the water tank module, the liquid drive pressurizing module, the exhaust/drainage module, the valve and the instrument module, the water pumping module and the upper computer, and the upper computer is connected with the electric control module.

2. The portable intelligent valve sealing performance test device according to claim 1, wherein: the water pump and water tank module include water injection pump, manual isolation valve, filter, check valve and water tank, the module external interface includes first water outlet port, first return water interface, second return water interface, blowdown interface and power source, water pump and water tank module water outlet port pass through high-pressure hose and valve and instrument module water pump interface connection, first return water interface and second return water interface pass through hose and valve and instrument module first pressure release exhaust interface and second pressure release exhaust interface connection, blowdown interface and blowdown hose connection blowdown, power source passes through the water pump power source interface connection of cable and pressure release exhaust interface.

3. The portable intelligent valve sealing performance test device according to claim 1, wherein: the hydraulic drive pressurizing module comprises an integrated hydraulic station and a pressurizing cylinder, and the external interface of the module comprises a hydraulic output interface, a power interface and a signal output interface; the hydraulic output interface of the hydraulic drive pressurizing module is connected with the valve and the instrument module pressurizing interface through a high-pressure hose, the power interface is connected with the power interface of the hydraulic station of the electric control module through a cable, and the signal output interface is connected with the signal acquisition interface of the electric control module through a cable.

4. The portable intelligent valve sealing performance test device according to claim 1, wherein: the valve and instrument module comprises an energy accumulator, an electric ball valve, a manual ball valve, a safety valve, a pressure gauge and a temperature sensor, and the external interface of the module comprises a signal output interface, a pressurizing interface, a water pump interface, a first pressure relief exhaust interface, a second pressure relief exhaust interface and a hydraulic output interface; the signal output interface is connected with the signal acquisition interface of the electrical control module through a cable, and the hydraulic output interface is connected with the hydraulic input interface of the exhaust/drainage module through a high-pressure hose.

5. The portable intelligent valve sealing performance test device according to claim 1, wherein: the exhaust/drainage module comprises a pressure gauge, a manual ball valve, a one-way valve and a quick connector, and the external interface of the module comprises a signal output interface, a drainage/exhaust interface, a valve cavity test interface and a hydraulic input interface; the signal output interface is connected with the signal acquisition interface of the electrical control module through a cable, one path of the drainage/exhaust interface is connected with the waste liquid barrel through a hose, the other path of the drainage/exhaust interface is connected with the water pumping interface of the water pumping module through a hose, and the valve cavity test interface is connected with the valve cavity interface of the valve through a high-pressure hose.

6. The portable intelligent valve sealing performance test device according to claim 1, wherein: the electric control module comprises a PLC acquisition controller, a power supply, an emergency stop control button and other relevant electric elements, and the external interfaces of the module comprise a water pump power interface, a hydraulic station power interface, a first signal acquisition interface, a second signal acquisition interface, a third signal acquisition interface, a water pump power interface, a power supply interface and a network interface; the power supply interface is connected with an external 220VAC power supply through a power line, and the network interface 508 is connected with the upper computer through a network line.

7. The portable intelligent valve sealing performance test device according to claim 1, wherein: the water pumping module comprises a water pumping pump, a manual ball valve and a connecting hose, and the external interface of the module comprises a water pumping interface, a water draining interface and a power interface; the drainage interface is connected with the waste liquid barrel through a hose, and the power interface is connected with the power interface of the water pump of the electric control module through a cable.

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