A system and method for hydrostatic testing of reactor core detectors

Abstract

This invention discloses a system and method for hydrostatic testing of reactor core detectors, belonging to the field of hydrostatic testing. It includes a water tank, a water injection pipeline, a pressurization pipeline, an intermediate pipeline, a pressure relief pipeline, and a control module. One end of the water injection pipeline and the pressurization pipeline are connected to the water tank. A water pump is connected to the water injection pipeline, and a pressurization pump and a pressure controller are connected to the pressurization pipeline. One end of the intermediate pipeline is connected to the other end of the water injection pipeline and the pressurization pipeline. The other end of the intermediate pipeline is equipped with a high-pressure interface for connecting an external pressure testing vessel. A pressure holding control valve and a pressure sensor are sequentially connected to the intermediate pipeline. One end of the pressure relief pipeline is connected to one end of the intermediate pipeline, and a pressure relief control valve is installed on the pressure relief pipeline. The control module determines whether the leakage of the test sample meets the product testing and inspection requirements based on the signal from the pressure sensor. In this embodiment, water is pumped into the pressure testing vessel before pressurization, resulting in a smaller impact force of the water flow on the leakage point, which can reduce safety hazards.

Description

Technical Field

[0001] This invention relates to the field of hydrostatic testing technology, and in particular to a system and method for hydrostatic testing of reactor core detectors. Background Technology

[0002] The core detector measurement system is the "eyes" and "nerve endings" of nuclear reactor safety. It directly senses the state of the core, the most critical and dangerous area, providing the most basic and direct data to ensure safety. Under harsh environments such as high temperature, high pressure, and high radiation, the core detector assembly is subjected to severe environmental conditions. The high sealing performance of the detector assembly is a serious challenge. The welds of the detector assembly have high quality requirements. Providing a detector with reliable welding quality allows for accurate monitoring of the core state and ensures reactor safety.

[0003] The hydrostatic test primarily examines the pressure-bearing capacity of a product. The detector component housing and sealing parts must withstand high pressure. The test pressure is typically the high design pressure to ensure that no problems occur during actual operation. Patent application number 201720849691.1 discloses an electric valve pressure testing device, including a control system, an electric pressure regulating valve, a pneumatic booster pump, and a pressure sensor. A driving air source forms an air circuit with the pneumatic booster pump through an air pipe. The driving gas enters the pneumatic booster pump after being pressure-regulated by the electric pressure regulating valve. A first solenoid valve and a second solenoid valve are respectively installed at the driving gas inlet and outlet of the pneumatic booster pump, both of which are connected to the control system. A water source forms a water circuit with the pneumatic booster pump through a water pipe. The water medium is pressurized by the pneumatic booster pump and enters the valve body pipe under test from the high-pressure outlet of the water pipe. A pressure sensor connected to the control system is installed on the water circuit between the pneumatic booster pump and the high-pressure outlet to collect the pressure signal entering the valve body pipe under test. In this pressure testing device, the water medium is pressurized by a pneumatic booster pump and then directly enters the pipeline of the valve body under test. If the connecting pipeline or the pipeline of the valve body under test is not completely sealed, the high-pressure water flow will directly impact the leak point, increasing the safety hazard. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a system and method for hydrostatic testing of reactor core detectors.

[0005] A system for hydrostatic testing of a reactor core detector according to an embodiment of the present invention includes: Water tank; A water injection pipeline is connected at one end to the water tank, and a water pump is connected to the water injection pipeline; A booster pipeline is connected to the water tank at one end. A booster pump and a pressure controller are connected to the booster pipeline. The pressure controller is used to provide feedback on the pressure of the booster pipeline. An intermediate pipeline, one end of which is connected to the other end of the water injection pipeline and the pressurization pipeline, and the other end of which is provided with a high-pressure interface for connecting an external pressure vessel, and a pressure holding control valve and a pressure sensor are connected in sequence on the intermediate pipeline; The control module is used to control the operation of the water pump, the booster pump and the pressure holding control valve, and to receive signals from the pressure controller and the pressure sensor. The control module determines whether the leakage of the test sample meets the product testing and inspection requirements based on the signal from the pressure sensor.

[0006] A system for hydrostatic testing of a reactor core detector according to an embodiment of the present invention has at least the following beneficial effects: The pressure controller provides feedback on the pressure of the booster pipeline, the pressure holding control valve controls the opening of the pressure holding valve, the pressure sensor provides feedback on the pressure changes in the intermediate pipeline, and the control module determines whether the leakage of the test sample meets the product testing and inspection requirements based on the signal from the pressure sensor and outputs a signal. Before the booster pump pressurizes the pressure testing container, a water pump first supplies water to the pressure testing container. The water pressure supplied by the water pump is relatively low. When the connecting pipeline or the pipeline of the valve body under test is not completely sealed, the impact force of the water flow on the leakage point is small, which facilitates further sealing of the leakage point and reduces safety hazards.

[0007] According to some embodiments of the present invention, the booster pump includes a pneumatic booster pump, a first pneumatic control line is connected to the booster pump, an air compressor is externally connected to the first pneumatic control line, a pneumatic proportional valve and a booster solenoid valve are connected to the first pneumatic control line, and the pneumatic proportional valve and the booster solenoid valve are electrically connected to the control module.

[0008] According to some embodiments of the present invention, the pressure holding control valve includes a pressure holding pneumatic control valve, a second pneumatic control line is connected to the pressure holding pneumatic control valve, the second pneumatic control line is externally connected to an air compressor, a pressure holding solenoid valve is connected to the second pneumatic control line, and the pressure holding solenoid valve is electrically connected to the control module.

[0009] According to some embodiments of the present invention, a pressure relief pipeline is further included, one end of which is connected to one end of the intermediate pipeline, a pressure relief pneumatic control valve is provided on the pressure relief pipeline, a pressure relief pneumatic control pipeline is connected to the pressure relief pneumatic control valve, a pressure relief solenoid valve is connected to the pressure relief pneumatic control pipeline, and the pressure relief pneumatic control pipeline is connected to the second pneumatic control pipeline.

[0010] According to some embodiments of the present invention, a manual pressure relief line is further included, one end of which is connected to one end of the intermediate line, and a manual pressure relief valve is connected to the manual pressure relief line.

[0011] According to some embodiments of the present invention, multiple intermediate pipelines are provided, one end of each intermediate pipeline is connected to the other end of the water injection pipeline and the pressurization pipeline, and the other end of each intermediate pipeline is provided with a device for connecting multiple pressure vessels to the outside.

[0012] According to some embodiments of the present invention, the high-pressure interface includes an interface base, a switch assembly, a connector, and a plug. The switch assembly is disposed on the connector base and is electrically connected to the pressure sensor corresponding to the intermediate pipeline. When it is necessary to block the high-pressure interface, the plug is connected to the interface base and abuts against the switch assembly. The switch assembly controls the pressure sensor to disconnect from the control module. When it is necessary to connect an external pressure testing vessel, the connector is connected to the interface base, and the external pipeline of the connector is connected to the pressure testing vessel. The pressure sensor is electrically connected to the control module.

[0013] According to some embodiments of the present invention, the switch assembly includes a slider, an elastic element, and two conductive elements. The two conductive elements are electrically connected to the pressure sensor. The interface seat is provided with a groove and two mounting holes communicating with the groove. The two conductive elements are respectively inserted through the two mounting holes and extend into the groove. The elastic element is disposed in the groove. The slider is slidably connected in the groove. A conductive sheet is disposed in the middle of the slider. When it is necessary to block the high-pressure interface, the plug abuts against the slider, the slider squeezes the elastic element, and the conductive sheet is offset from at least one of the conductive elements. The pressure sensor is disconnected from the control module. When an external pressure-pressurizing container is required, the conductive sheet abuts against the two conductive elements, and the pressure sensor is electrically connected to the control module.

[0014] According to some embodiments of the present invention, the plug is provided with a first slot, the connector is provided with a second slot, the depth of the second slot is greater than the depth of the first slot, and the slider extends into the first slot or the second slot to restrict the rotation of the plug or the connector.

[0015] A method for hydrostatic testing of a reactor core detector according to the present invention includes the following steps: S1: The water pump draws water from the water tank and transports it to the pressure vessel through the water injection pipeline and the intermediate pipeline; S2: The booster pump draws water from the water tank and delivers it to the pressure vessel via the booster pipeline and the intermediate pipeline; the pressure controller provides feedback on the pressure of the booster pipeline. S3: After the pressure controller reports that the pressure in the booster pipeline reaches the test set pressure, it closes the pressure holding control valve to start pressure holding, and the pressure sensor reports the pressure change in the intermediate pipeline. S4: The control module determines whether the leakage of the test sample meets the product testing requirements based on the signal from the pressure sensor.

[0016] A hydrostatic testing method for a reactor core detector according to an embodiment of the present invention has at least the following beneficial effects: The pressure controller provides feedback on the pressure of the booster pipeline, the pressure holding control valve controls the opening of the pressure holding valve, the pressure sensor provides feedback on the pressure changes in the intermediate pipeline, and the control module determines whether the leakage of the test sample meets the product testing and inspection requirements based on the signal from the pressure sensor and outputs a signal. Before the booster pump pressurizes the pressure testing container, a water pump first supplies water to the pressure testing container. The water pressure supplied by the water pump is relatively low. When the connecting pipeline or the pipeline of the valve body under test is not completely sealed, the impact force of the water flow on the leakage point is small, which facilitates further sealing of the leakage point and reduces safety hazards.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of a system for hydrostatic testing of a reactor core detector according to an embodiment of the present invention; Figure 2 This is a structural diagram of a system for hydrostatic testing of a reactor core detector according to an embodiment of the present invention; Figure 3 This is a structural diagram of the interface socket and switch assembly of the system for hydrostatic testing of the reactor core detector according to an embodiment of the present invention; Figure 4 This is a cross-sectional view of the interface seat and connector of the system for hydrostatic testing of the reactor core detector according to an embodiment of the present invention. Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 This is a cross-sectional view of the interface seat and plug of the system for hydrostatic testing of the reactor core detector according to an embodiment of the present invention. Figure 7 for Figure 6 Enlarged view of point B in the middle.

[0019] Icon labels: 100. Water tank; 110. Drain pipe; 111. Drain valve; 200. Water injection pipeline; 210. Water pump; 220. Water injection filter; 230. Water injection pneumatic control valve; 240. Check valve; 300. Booster piping; 310. Booster pump; 320. Pressure controller; 330. Booster filter; 400. Intermediate pipeline; 410. Pressure-holding pneumatic control valve; 420. Pressure sensor; 430. High-pressure interface; 431. Interface seat; 4311. Slide groove; 4312. Mounting hole; 4313. Limiting hole; 432. Switch assembly; 4321. Slider; 4322. Elastic element; 4323. Conductive element; 4324. Conductive sheet; 4325. Lever; 433. Connector; 4331. Second slot; 434. Plug; 4341. First slot; 500. Pressure relief pipeline; 510. Pressure relief pneumatic control valve; 600, First pneumatic control line; 610, Pneumatic proportional valve; 620, Pressure boosting solenoid valve; 630, Gas cylinder; 640, First pressure regulating valve; 650, First pressure gauge; 660, Air filter; 700, Second pneumatic control line; 710, Pressure holding solenoid valve; 720, Second pressure regulating valve; 730, Second pressure gauge; 740, Pressure relief pneumatic control line; 741, Pressure relief solenoid valve; 750, Water injection pneumatic control line; 751, Water injection solenoid valve; 800. Manual pressure relief pipeline; 810. Manual pressure relief valve; 900, rack; 910, function keys; 920, touch display screen. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] Please see Figure 1 and Figure 2 According to an embodiment of the present invention, a system for hydrostatic testing of a reactor core detector includes a water tank 100, a water injection pipeline 200, a pressurization pipeline 300, an intermediate pipeline 400, and a control module. A drain pipeline 110 is connected to the water tank 100, and a drain valve 111 is provided on the drain pipeline 110. One end of the water injection pipeline 200 is connected to the water tank 100, and a water injection filter 220, a water pump 210, and a one-way valve 240 are connected to the water injection pipeline 200. One end of the pressurization pipeline 300 is connected to the water tank 100, and a pressurization filter 330, a pressurization pump 310, and a pressure controller 320 are connected to the pressurization pipeline 300. The pressure controller 320 is used to provide feedback on the pressure of the pressurization pipeline 300. One end of the intermediate pipeline 400 is connected to the other end of the water injection pipeline 200 and the pressurization pipeline 300. The other end of the intermediate pipeline 400 is equipped with a high-pressure interface 430 for connecting an external pressure vessel. A pressure-holding control valve and a pressure sensor 420 are connected sequentially to the intermediate pipeline 400. The control module is used to control the operation of the water pump 210, the pressurization pump 310, and the pressure-holding control valve, and to receive signals from the pressure controller 320 and the pressure sensor 420. Based on the signal from the pressure sensor 420, the control module determines whether the leakage of the test sample meets the product testing and inspection requirements and outputs a signal.

[0024] The pressure controller 320 provides feedback on the pressure of the booster pipe 300, the pressure holding control valve controls the opening of the pressure holding valve, the pressure sensor 420 provides feedback on the pressure change on the intermediate pipe 400, and the control module determines whether the leakage of the test sample meets the product test and inspection requirements based on the signal from the pressure sensor 420 and outputs a signal. Before the booster pump 310 pressurizes the pressure testing container, the water pump 210 first supplies water to the pressure testing container. The water pressure supplied by the water pump 210 is relatively low. When the connecting pipe or the pipe of the valve body under test is not completely sealed, the impact force of the water flow on the leakage point is small, which facilitates further sealing of the leakage point and reduces safety hazards.

[0025] Judgment criteria for the control module: Referring to the test specifications for the core detector assembly, the allowable pressure drop of the product is set. For example, if the holding pressure is set to 4 MPa, the holding time to 30 seconds, and the allowable pressure drop to 1 MPa, then at the start of the holding pressure, pressure sensor 420 reports a pressure of 4 MPa at the corresponding intermediate pipeline 400. After the 30-second holding time, if pressure sensor 420 reports a pressure at the corresponding intermediate pipeline 400 that is less than 3 MPa, it indicates that the leakage of the test sample does not meet the product test and inspection requirements. If pressure sensor 420 reports a pressure at the corresponding intermediate pipeline 400 that is greater than or equal to 3 MPa, it indicates that the leakage of the test sample meets the product test and inspection requirements.

[0026] The control module includes a computer control system, which is existing technology. The control module comprises a host computer and a slave computer; the host computer is an industrial panel PC, and the slave computer is a PLC. The industrial panel PC is equipped with dedicated pulse software and has a touchscreen display 920. The control module outputs a signal via the touchscreen display 920 indicating whether the leakage of the test sample meets the product testing requirements.

[0027] The system for hydrostatic testing of the reactor core detector includes a rack 900, an industrial panel PC with a touch screen 920 mounted on the rack 900. The rack 900 also includes multiple function keys 910 and function indicators, specifically including alarm lights, emergency stop buttons, buzzers, pressure channel lights, pressure relief buttons, manual / automatic switch, power indicator lights, pressurization buttons, pressure holding buttons, and power start buttons. A water tank 100, water injection pipes 200, pressurization pipes 300, and intermediate pipes 400 are located inside the rack 900. A high-pressure interface 430 protrudes from the side wall of the rack 900. A first pressure regulating valve 640, a first pressure regulating gauge, a second pressure regulating valve 720, a second pressure regulating gauge, and a pressure controller 320 are located on the rack 900.

[0028] In some embodiments, see Figure 1 and Figure 2 The booster pump 310 includes a pneumatic booster pump 310, to which a first pneumatic control line 600 is connected, and an external air compressor is connected to the first pneumatic control line 600. A pneumatic proportional valve 610 and a booster solenoid valve 620 are connected to the first pneumatic control line 600, and the pneumatic proportional valve 610 and the booster solenoid valve 620 are electrically connected to a control module. The control module precisely controls the pressurization rate of the pressurized container by adjusting the opening and closing degree of the pneumatic proportional valve 610. The control module controls the opening and closing of the booster pump 310 by controlling the opening and closing of the booster solenoid valve 620.

[0029] The first pneumatic control line 600 is connected to an external air compressor at its first end and to a booster pump 310 at its last end. Along the middle section of the first pneumatic control line 600 are sequentially connected an air storage cylinder 630, a first pressure regulating valve 640, a first pressure gauge 650, an air filter 660, a pneumatic proportional valve 610, and a booster solenoid valve 620. After the air compressor starts, it prioritizes filling the air storage cylinder 630 with air. Once the pressure inside the cylinder reaches its upper limit, it then supplies air to the pipeline. The air storage cylinder 630 can absorb excess compressed air, preventing a sudden increase in pipeline pressure. When the air consumption exceeds the air compressor's output, the air storage cylinder 630 releases the stored compressed air to replenish the pipeline's needs, preventing a sudden pressure drop. The first pressure regulating valve 640 can adjust the pressure input from the air compressor to the booster pump 310, and the first pressure gauge 650 displays the pressure on the first pneumatic control line 600 in real time.

[0030] In some embodiments, see Figure 1 and Figure 2 The pressure-holding control valve includes a pressure-holding pneumatic control valve 410, to which a second pneumatic control line 700 is connected. The second pneumatic control line 700 is connected to an external air compressor, and a pressure-holding solenoid valve 710 is connected to the second pneumatic control line 700. The pressure-holding solenoid valve 710 is electrically connected to the control module. After the pressure in the booster line 300 reaches the test set pressure, the pressure-holding control valve closes to begin pressure holding. The control module controls the opening and closing of the pressure-holding solenoid valve 710, thereby controlling whether gas from the second pneumatic control line 700 can be delivered to the pressure-holding pneumatic control valve 410, and controlling the opening and closing of the pressure-holding pneumatic control valve 410.

[0031] The first end of the second pneumatic control line 700 is connected to an external air pressure port, and the last end is connected to a pressure-holding pneumatic control valve 410. The second pneumatic control line 700 is sequentially connected to a second pressure regulating valve 720, a second pressure gauge 730, a water injection pneumatic control line 750, a pressure relief pneumatic control line 740, and a pressure-holding solenoid valve 710. The second pressure regulating valve 720 can adjust the pressure on the second pneumatic control line 700, and the second pressure gauge 730 displays the pressure on the second pneumatic control line 700 in real time.

[0032] A water injection solenoid valve 751 is connected in the middle of the water injection pneumatic control pipeline 750, and a water injection pneumatic control valve 230 is connected at the end. The water injection pneumatic control valve 230 is connected to the water injection pipeline 200. The water injection solenoid valve 751 is electrically connected to the control module. The control module controls the opening and closing of the water injection solenoid valve 751, and controls the opening and closing of the water injection pipeline 200.

[0033] In some embodiments, see Figure 1 and Figure 2The system used for hydrostatic testing of the reactor core detector also includes a pressure relief pipeline 500, one end of which is connected to one end of an intermediate pipeline 400. A pressure relief pneumatic control valve 510 is installed on the pressure relief pipeline 500. A pressure relief pneumatic control pipeline 740 is connected to the pressure relief pneumatic control valve 510, and a pressure relief solenoid valve 741 is connected to the pressure relief pneumatic control pipeline 740. The pressure relief pneumatic control pipeline 740 is connected to a second pneumatic control pipeline 700. After the test is completed, opening the pressure holding control valve and the pressure relief pneumatic control valve 510 will release the pressure.

[0034] In some embodiments, see Figure 1 and Figure 2 The system used for hydrostatic testing of the reactor core detector also includes a manual pressure relief line 800, one end of which is connected to one end of the intermediate line 400. A manual pressure relief valve 810 is connected to the manual pressure relief line 800. The manual pressure relief valve 810 is used for manual emergency pressure relief to reduce safety hazards.

[0035] In some embodiments, see Figure 1 and Figure 2 Multiple intermediate pipelines 400 are provided, one end of which is connected to the other end of the water injection pipeline 200 and the pressurization pipeline 300. The other end of the multiple intermediate pipelines 400 is provided with a device for connecting to multiple external pressure vessels. Multiple core detector assemblies can be hydrostatically tested at the same time, reducing the operator's time and labor intensity, improving production efficiency, and reducing the company's production costs.

[0036] In some embodiments, see Figure 3 , Figure 4 and Figure 6 The high-pressure interface 430 includes an interface base 431, a switch assembly 432, a connector 433, and a plug 434. The switch assembly 432 is mounted on the connector base and is electrically connected to the pressure sensor 420 on the corresponding intermediate pipeline 400. The interface base 431 and the connector 433 are detachably threaded together, and the interface base 431 and the plug 434 are also detachably threaded together.

[0037] See Figure 6 and Figure 7 When it is necessary to seal the high-pressure interface 430, the plug 434 connects to the interface seat 431, and the plug 434 abuts against the switch assembly 432. The switch assembly 432 controls the pressure sensor 420 to disconnect from the control module. Sealing the high-pressure interface 430 means that the intermediate pipeline 400 is not subjected to a water pressure test. The plug 434 and the interface seat 431 are sealed together, and the switch assembly 432 controls the pressure sensor 420 to disconnect from the control module. The pressure sensor 420 on the intermediate pipeline 400, which is not subjected to a water pressure test, does not report pressure changes to the control module, reducing the workload of the control module and improving its efficiency.

[0038] See Figure 4 and Figure 5 When an external pressure testing vessel is required, connector 433 connects to interface seat 431, and the external pipeline of connector 433 is connected to the pressure testing vessel. Pressure sensor 420 is electrically connected to the control module. When connector 433 is connected to interface seat 431, the pressure sensor 420 on the corresponding intermediate pipeline 400 is electrically connected to the control module. Pressure sensor 420 provides real-time feedback of the pressure on intermediate pipeline 400 to the control module. The control module determines whether the leakage of the test sample meets the product testing requirements based on the signal from pressure sensor 420 and outputs a signal.

[0039] In some embodiments, see Figure 3 , Figure 4 and Figure 6 The switch assembly 432 includes a slider 4321, an elastic element 4322, and two conductive elements 4323, which are electrically connected to the pressure sensor 420. The interface base 431 has a groove 4311 and two mounting holes 4312 communicating with the groove 4311. The two conductive elements 4323 are respectively inserted through the two mounting holes 4312 and extend into the groove 4311. The elastic element 4322 is located within the groove 4311, and the slider 4321 is slidably connected within the groove 4311. A conductive sheet 4324 is located in the middle of the slider 4321. The interface seat 431 is provided with a limiting hole 4313, which is an elongated slot. A lever 4325 is detachably connected to the slider 4321. The lever 4325 passes through the limiting hole 4313. Moving the lever 4325 causes the slider 4321 to move within the slide groove 4311. The depth direction of the slide groove 4311 and the length direction of the limiting hole 4313 are both axial directions of the interface seat 431.

[0040] See Figure 6 and Figure 7 When it is necessary to seal the high-pressure interface 430, the plug 434 abuts against the slider 4321, the slider 4321 compresses the elastic element 4322, and the conductive sheet 4324 is offset from at least one conductive element 4323, thus disconnecting the pressure sensor 420 from the control module. The switch assembly 432 controls the pressure sensor 420 to disconnect from the control module. The pressure sensor 420 on the intermediate pipeline 400 that does not undergo hydrostatic testing does not report pressure changes to the control module, reducing the workload of the control module and improving its efficiency.

[0041] See Figure 4 and Figure 5When an external pressure testing container is required, the conductive sheet 4324 abuts against two conductive parts 4323, and the pressure sensor 420 is electrically connected to the control module. The pressure sensor 420 on the intermediate pipeline 400 is also electrically connected to the control module. The pressure sensor 420 provides real-time feedback of the pressure on the intermediate pipeline 400 to the control module. Based on the signal from the pressure sensor 420, the control module determines whether the leakage of the test sample meets the product testing requirements and outputs a signal.

[0042] In some embodiments, see Figure 4 and Figure 6 The plug 434 is provided with a first slot 4341, and the connector 433 is provided with a second slot 4331. The depth of the second slot 4331 is greater than the depth of the first slot 4341. The slider 4321 extends into the first slot 4341 to restrict the plug 434, and the slider 4321 extends into the second slot 4331 to restrict the rotation of the connector 433.

[0043] When the plug 434 is connected to the interface seat 431, the bottom wall of the first slot 4341 abuts against the slider 4321. The slider 4321 presses against the elastic element 4322, causing the conductive sheet 4324 to be misaligned with one conductive element 4323. The two conductive elements 4323 are disconnected from the electrical connection, and the pressure sensor 420 is disconnected from the control module. The switch assembly 432 controls the pressure sensor 420 to disconnect from the control module. The pressure sensor 420 on the intermediate pipeline 400, which does not undergo a water pressure test, does not report pressure changes to the control module, reducing the workload of the control module and improving its efficiency. At the same time, the slider 4321 also restricts the rotation of the plug 434, making it less likely for the plug 434 to fall off the interface seat 431 during operation, reducing safety hazards.

[0044] When connector 433 is connected to interface seat 431, the second slot 4331 is deeper than the first slot 4341. The elastic element 4322 can push the slider 4321 into the second slot 4331. The conductive sheet 4324 always abuts against the two conductive elements 4323, and the two conductive elements 4323 are interconnected. The pressure sensor 420 is electrically connected to the control module. The pressure sensor 420 on the intermediate pipeline 400 is also electrically connected to the control module. The pressure sensor 420 provides real-time feedback of the pressure on the intermediate pipeline 400 to the control module. The control module uses the signal from the pressure sensor 420 to determine whether the leakage of the test sample meets the product testing requirements and outputs a signal. Simultaneously, the slider 4321 also restricts the rotation of connector 433, preventing connector 433 from easily detaching from interface seat 431 during operation and reducing safety hazards.

[0045] See Figure 1 and Figure 2 A method for hydrostatic testing of a reactor core detector according to the present invention includes the following steps: S1: Water pump 210 draws water from water tank 100 and delivers it to pressure vessel via water injection pipeline 200 and intermediate pipeline 400.

[0046] S2: The booster pump 310 draws water from the water tank 100 and delivers it to the pressure vessel through the booster pipeline 300 and the intermediate pipeline 400. The pressure controller 320 provides feedback on the pressure of the booster pipeline 300.

[0047] S3: After the pressure in the booster line 300 reaches the test set pressure, the pressure holding control valve is closed to start holding the pressure, and the pressure sensor 420 provides feedback on the pressure change in the intermediate line 400.

[0048] S4: The control module determines whether the leakage of the test sample meets the product testing and inspection requirements based on the signal from the pressure sensor 420.

[0049] The pressure controller 320 provides feedback on the pressure of the booster pipe 300, the pressure holding control valve controls the opening of the pressure holding valve, the pressure sensor 420 provides feedback on the pressure change on the intermediate pipe 400, and the control module determines whether the leakage of the test sample meets the product test and inspection requirements based on the signal from the pressure sensor 420 and outputs a signal. Before the booster pump 310 pressurizes the pressure testing container, the water pump 210 first supplies water to the pressure testing container. The water pressure supplied by the water pump 210 is relatively low. When the connecting pipe or the pipe of the valve body under test is not completely sealed, the impact force of the water flow on the leakage point is small, which facilitates further sealing of the leakage point and reduces safety hazards.

[0050] The method for hydrostatic testing of a reactor core detector according to the present invention includes the following preparation work: a pressure vessel is connected to a high-pressure interface 430 through a pipeline; the reactor core detector assembly is placed in the pressure vessel; the test equipment is powered on; the power start switch is turned on; both air inlets of the test equipment are connected to external air compressors; the air compressors are turned on; the water quality in the water tank 100 is checked; the liquid level in the water tank 100 is checked; the value of the air pressure gauge is checked; the manual pressure relief valve 810 is checked; the water supply ball valve of the water tank 100 is checked; and the drain ball valve of the water tank 100 is checked.

[0051] The manual test in the method for hydrostatic testing of a reactor core detector according to the present invention includes the following steps: Operate the touch screen 920 on the frame 900 to enter the main program interface of the hydrostatic test software.

[0052] Turn on the air release and water injection switch on the main program interface to inject water into the pressure container. Once the pressure container is full of water, seal the pressure container and turn off the air release and water injection switch.

[0053] Turn on the pressure boosting switch on the rack 900 and observe the pressure display on the pressure controller 320 on the rack 900. When the pressure reaches the test set pressure, turn on the pressure holding switch on the rack 900 and turn off the pressure boosting switch on the rack 900.

[0054] Pressure sensor 420 collects pressure data to the control module of the test equipment. The control module determines whether the leakage of the test sample meets the product test and inspection requirements and displays it on the computer host. When the pressure holding ends, the pressure holding switch is turned off and the pressure relief switch is turned on.

[0055] The automatic testing method for hydrostatic testing of reactor core detectors according to this invention includes the following steps: Operate the touch screen 920 on the frame 900 to enter the main program interface of the hydrostatic test software.

[0056] According to the test procedure, set the number of pressurization cycles, holding pressure, holding time, pressurization rate, allowable pressure drop, pressure drop stop, interval depressurization, interval pause, and product name for the hydrostatic test.

[0057] Turn on the air release and water injection switch on the main program interface to inject water into the pressure container. Once the pressure container is full of water, seal the pressure container and turn off the air release and water injection switch.

[0058] Turn on the start switch on the main program interface, and the test equipment will run according to the set parameters.

[0059] The program automatically determines whether the leakage of the test product meets the product testing and inspection requirements according to the set parameters.

[0060] After all processes are completed, the pressure is automatically released and the equipment is automatically stopped. The testing equipment automatically records relevant data, and the inspection personnel confirm and save the recorded data.

[0061] This invention discloses a system and method for hydrostatic testing of reactor core detectors. This method can be promoted to other similar hydrostatic testing methods, particularly for high-efficiency performance testing of domestically mass-produced products. It also provides guidance for the sealing performance testing of pressure-bearing precision sensors in the nuclear industry, verifying the quality of pressure-bearing products and ensuring their performance. The system is simple to operate, allowing multiple reactor core detector assemblies to be hydrostatically tested simultaneously, reducing worker operating time and labor intensity, improving production efficiency, and lowering enterprise production costs. Even after immersion testing and verification, the sealing performance of mass-produced reactor core detector assemblies still meets requirements, verifying reliable welding quality. Under high water pressure, the system improves product durability. The hydrostatic testing equipment has a high-precision automatic control system with functions such as pressurization, depressurization, drainage, abnormal alarm, overload protection, emergency depressurization, overpressure alarm, automatic depressurization, and manual depressurization. It operates stably and reliably, capable of long-term uninterrupted operation, meeting the long-term testing requirements of special industries.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0063] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A system for hydrostatic testing of reactor core detectors, characterized in that, include: Water tank; A water injection pipeline is connected at one end to the water tank, and a water pump is connected to the water injection pipeline; A booster pipeline is connected to the water tank at one end. A booster pump and a pressure controller are connected to the booster pipeline. The pressure controller is used to provide feedback on the pressure of the booster pipeline. An intermediate pipeline, one end of which is connected to the other end of the water injection pipeline and the pressurization pipeline, and the other end of which is provided with a high-pressure interface for connecting an external pressure vessel, and a pressure holding control valve and a pressure sensor are connected in sequence on the intermediate pipeline; The control module is used to control the operation of the water pump, the booster pump and the pressure holding control valve, and to receive signals from the pressure controller and the pressure sensor. The control module determines whether the leakage of the test sample meets the product testing and inspection requirements based on the signal from the pressure sensor.

2. The system for hydrostatic testing of a reactor core detector according to claim 1, characterized in that, The booster pump includes a pneumatic booster pump, which is connected to a first pneumatic control line. The first pneumatic control line is connected to an external air compressor. A pneumatic proportional valve and a booster solenoid valve are connected to the first pneumatic control line. The pneumatic proportional valve and the booster solenoid valve are electrically connected to the control module.

3. The system for hydrostatic testing of a reactor core detector according to claim 1, characterized in that, The pressure-holding control valve includes a pressure-holding pneumatic control valve, a second pneumatic control line connected to the pressure-holding pneumatic control valve, an external air compressor connected to the second pneumatic control line, a pressure-holding solenoid valve connected to the second pneumatic control line, and the pressure-holding solenoid valve electrically connected to the control module.

4. The system for hydrostatic testing of a reactor core detector according to claim 3, characterized in that, It also includes a pressure relief pipeline, one end of which is connected to one end of the intermediate pipeline. A pressure relief pneumatic control valve is installed on the pressure relief pipeline, and a pressure relief pneumatic control pipeline is connected to the pressure relief pneumatic control valve. A pressure relief solenoid valve is connected to the pressure relief pneumatic control pipeline, and the pressure relief pneumatic control pipeline is connected to the second pneumatic control pipeline.

5. The system for hydrostatic testing of a reactor core detector according to claim 1, characterized in that, It also includes a manual pressure relief pipeline, one end of which is connected to one end of the intermediate pipeline, and a manual pressure relief valve is connected to the manual pressure relief pipeline.

6. The system for hydrostatic testing of a reactor core detector according to claim 1, characterized in that, Multiple intermediate pipelines are provided, one end of each intermediate pipeline is connected to the other end of the water injection pipeline and the pressurization pipeline, and the other end of each intermediate pipeline is provided with a device for connecting multiple external pressure vessels.

7. The system for hydrostatic testing of a reactor core detector according to claim 1, characterized in that, The high-pressure interface includes an interface base, a switch assembly, a connector, and a plug. The switch assembly is mounted on the connector base and is electrically connected to the pressure sensor on the corresponding intermediate pipeline. When the high-pressure interface needs to be blocked, the plug is connected to the interface base and abuts against the switch assembly. The switch assembly controls the pressure sensor to disconnect from the control module. When an external pressure testing vessel needs to be connected, the connector is connected to the interface base, and the external pipeline of the connector is connected to the pressure testing vessel. The pressure sensor is electrically connected to the control module.

8. A system for hydrostatic testing of a reactor core detector according to claim 7, characterized in that, The switch assembly includes a slider, an elastic element, and two conductive elements. The two conductive elements are electrically connected to the pressure sensor. The interface base has a groove and two mounting holes communicating with the groove. The two conductive elements pass through the two mounting holes and extend into the groove. The elastic element is located within the groove. The slider is slidably connected within the groove. A conductive plate is located in the middle of the slider. When the high-pressure interface needs to be blocked, the plug abuts against the slider, the slider compresses the elastic element, and the conductive plate is offset from at least one of the conductive elements. The pressure sensor is then disconnected from the control module. When an external pressure vessel needs to be connected, the conductive plate abuts against both conductive elements, and the pressure sensor is electrically connected to the control module.

9. A system for hydrostatic testing of a reactor core detector according to claim 8, characterized in that, The plug is provided with a first slot, and the connector is provided with a second slot. The depth of the second slot is greater than the depth of the first slot. The slider extends into the first slot or the second slot to restrict the rotation of the plug or the connector.

10. A method for hydrostatic testing of a reactor core detector, applied to a system for hydrostatic testing of a reactor core detector as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: The water pump draws water from the water tank and transports it to the pressure vessel through the water injection pipeline and the intermediate pipeline; S2: The booster pump draws water from the water tank and delivers it to the pressure vessel via the booster pipeline and the intermediate pipeline; the pressure controller provides feedback on the pressure of the booster pipeline. S3: After the pressure controller reports that the pressure in the booster pipeline reaches the test set pressure, it closes the pressure holding control valve to start pressure holding, and the pressure sensor reports the pressure change in the intermediate pipeline. S4: The control module determines whether the leakage of the test sample meets the product testing requirements based on the signal from the pressure sensor.

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