Exhaust valve detection device and test process thereof
By designing an exhaust valve detection device, using dual gas and water pipes to simulate real working scenarios, and combining sensors and control systems, the problem of large errors in existing detection methods was solved, and comprehensive and accurate detection of exhaust valve performance was achieved.
Patent Information
- Application Number
- CN202510930421.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-07
- Publication Date
- 2025-09-26
AI Technical Summary
Existing exhaust valve detection methods have large errors and lack simulation of the actual working scenarios of exhaust valves, especially quantitative testing in water-vapor mixed environments.
An exhaust valve detection device was designed, which included an air compressor, a temperature-controlled water tank, a tank body, a pressure monitoring system, and a control system. The real working scenario of the exhaust valve was simulated through a dual gas and water flow pipeline. Real-time monitoring was performed using air pressure sensors, water pressure sensors, and weighing sensors, and data analysis was performed using the control system.
It achieves comprehensive and accurate detection of exhaust valves, avoids manual interpretation errors, improves the accuracy and comprehensiveness of detection, and can simulate the performance of exhaust valves under different working conditions.
Smart Images
Figure CN120702750A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of pipe network equipment detection, and particularly relates to an exhaust valve detection device and a testing process thereof. Background Art
[0002] The exhaust valve is used for exhaust in pipes of independent heating systems, central heating systems, heating boilers, central air conditioners, floor heating and solar heating systems. Because there is usually a certain amount of air dissolved in water, and the solubility of air decreases with increasing temperature, the gas gradually separates from the water during the circulation process and gradually gathers together to form large bubbles or even air columns. Because of the replenishment of water, gas is often generated; the exhaust valve is a key component widely used in drainage, gas supply systems and other industrial fields; its main function is to automatically exhaust the air in the pipe system, prevent air blockage or water hammer, and ensure the normal operation of the system. Since the working status of the exhaust valve directly affects the efficiency and safety of the entire system, it is very important to conduct a comprehensive and accurate inspection of it; However, the existing technology has the following problems that need to be solved: traditional exhaust valve detection is water pressure detection, so there are many detection errors, because water not only has pressure but also buoyancy, and there is a float inside the exhaust valve, so the water pressure test is easy to misjudge, and there is a lack of simulation of the actual working scene of the exhaust valve and the water-vapor mixing environment, and a lack of quantitative testing of key parameters such as exhaust volume and water leakage, which are in urgent need of improvement; for this reason, an exhaust valve detection device and its testing process are proposed. Summary of the Invention
[0003] In view of this, the present invention provides an exhaust valve detection device and a testing process thereof to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.
[0004] The technical solution of the present invention is achieved as follows: an exhaust valve detection device includes an air compressor, a temperature control water tank, a tank body, a pressure monitoring system and a control system; The outlet end of the air compressor is connected to a pressure reducing valve, a gas dryer, a gas pipeline and a first valve in sequence along the gas flow direction; the water outlet of the temperature control water tank is connected to a water pump and a water flow pipeline in sequence along the liquid flow direction; the two sides of the tank body are connected to an inlet pipe and an outlet pipe respectively; one end of the inlet pipe is connected to a three-way solenoid valve; the ends of the gas pipeline and the water flow pipeline are both connected to the three-way solenoid valve; a pressure relief valve is provided on the outlet pipe; the top of the tank body is connected to exhaust valve bodies of different calibers; a water pressure sensor and an air pressure sensor are respectively provided on the inner wall of the tank body; the outlet of the exhaust valve body is connected to a gas flow meter in series; the pressure reducing valve, the water pump, the three-way solenoid valve, the water pressure sensor and the air pressure sensor are all electrically connected to the pressure monitoring system and the control system.
[0005] Further preferably, a temperature sensor is provided on the tank body, a second valve is provided between the exhaust valve body and the tank body, a water collecting mechanism is provided at the lower end of the exhaust valve body near the second valve, a weighing sensor is provided in the water collecting mechanism, and the weighing sensor and the temperature sensor are both electrically connected to the control system.
[0006] Further preferably, the control system includes a processor unit, a storage unit, a signal acquisition unit, a semaphore output unit and a communication unit, the processor unit is used to execute the fluid control algorithm, the storage unit is used to store the control program, the pressure safety threshold table and the test data, the signal acquisition unit respectively collects the numerical values of the analog electrical signals of the water pressure sensor, the air pressure sensor, the temperature sensor, the gas flow meter and the weighing sensor, the semaphore output unit is used to control the reversing of the pressure reducing valve, the water pump and the three-way solenoid valve, and the communication unit is connected to the remote monitoring host computer via wireless transmission.
[0007] Further preferably, a rectifier plate is fixedly connected to the interior of the tank body, and the number of the rectifier plates is three. Through holes are opened on the three rectifier plates and are staggeredly distributed.
[0008] Further preferably, a first ring body, a second ring body and a third ring body are fixedly connected to the inner wall of the outlet pipe, a first through groove is provided on one side of the first ring body, a second through groove is provided on one side of the second ring body, a fixing block is fixedly connected to the side of the inner wall of the outlet pipe close to the second ring body, a groove is provided on one side of the fixing block, and one side of the third ring body is connected to the fourth ring body.
[0009] Further preferably, the axial thickness of the first ring body is smaller than the axial thickness of the second ring body.
[0010] Further preferably, the number of the first through grooves is several and they are evenly distributed along the circumferential direction of the first ring body, the number of the second through grooves is several and they are evenly distributed along the circumferential direction of the second ring body, and the second through grooves and the first through grooves are staggered in the axial direction.
[0011] In addition, the present invention also provides a testing process based on the device, comprising the following steps: Step 1: Start the air compressor to fill the tank with dry air, continuously monitor the pressure drop rate through the air pressure sensor, and synchronously record the air leakage from the exhaust port of the exhaust valve body through the gas flow meter. After determining the exhaust performance, open the pressure relief valve to release the pressure; Step 2: Control the three-way solenoid valve to connect the water pipe and the inlet pipe, and start the water pump to inject temperature-controlled water into the tank. At the same time, start the air compressor and control the three-way solenoid valve to connect the gas pipe and the inlet pipe to allow air to flow into the tank. Adjust the air flow rate by controlling the pressure reducing valve to simulate the pipe filling and exhaust working condition, and record the stable value of the exhaust volume of the exhaust valve body. Step 3: Gradually increase the airflow rate by controlling the pressure reducing valve, and use the gas flow meter to record the limit value of the exhaust volume of the exhaust valve body tending to be stable, determine the limit exhaust volume of the exhaust valve body, and determine whether the gas flow meter is leaking or condensing water by the weight of the weight added in the water collection mechanism combined with the water temperature detected by the temperature sensor; Step 4: Determine the exhaust valve performance through the preset threshold value, temperature and weight algorithm in the control system, and upload it to the host computer via wireless transmission.
[0012] Further preferably, in step one, the air pressure in the tank body is monitored by an air pressure sensor. When the threshold pressure of the exhaust valve body is reached, the first valve is closed and the pressure is maintained for 30 minutes. The air pressure drop value of the tank body and the exhaust volume of the exhaust valve body are recorded to determine whether the exhaust valve body is qualified.
[0013] Further preferably, in step 2, the temperature of water is controlled by a temperature-controlled water tank and injected into the tank, and the volume of the injected water is 80% of the volume of the tank.
[0014] The embodiment of the present invention adopts the above technical solution, which has the following advantages: The present invention sets up dual pipelines for gas and water flow, which can realize the multifunctional integration of air pressure detection and water vapor combined test, improve the comprehensiveness and compatibility of test scenarios, and use a three-way solenoid valve to control the switching of air flow and water path, so as to simulate the real working scenarios of the exhaust valve under different working conditions, pure air pressure and water vapor mixture, and control the gas flow rate through the pressure reducing valve to test the limit displacement of exhaust valves of different calibers, effectively avoiding the occurrence of air blocking phenomenon, and confirming whether the exhaust valve is leaking or condensed water during operation by collecting the water leakage of the exhaust valve, and real-time monitoring by the equipped control system to avoid manual interpretation errors and improve the accuracy of the exhaust valve test.
[0015] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0016] Figure 1 It is a structural schematic diagram of the present invention.
[0017] Figure 2 This is a block diagram of the control system in the present invention.
[0018] Figure 3 It is a cross-sectional view of the tank body in the present invention.
[0019] Figure 4 It is a cross-sectional view of the outlet pipe in the present invention.
[0020] Figure 5 It is a structural diagram of the water collection mechanism in the present invention.
[0021] Figure 6 It is the exploded structural diagram of the water collection mechanism in the present invention.
[0022] Figure 7 This is a structural diagram of the fixed components of the water collection mechanism in the present invention.
[0023] Figure 8 It is a structural diagram of the fixing assembly and the arc-shaped arched through pipe in the present invention.
[0024] Figure 9 It is a structural diagram of the left tapered locking piece and the right tapered locking piece in the present invention.
[0025] in: 10-air compressor; 11-pressure reducing valve; 12-gas dryer; 13-gas pipeline; 14-first valve; 20-temperature control water tank; 21-water pump; 22-water flow pipeline; 30-tank; 31-three-way solenoid valve; 32-inlet pipe; 33-pressure relief valve; 34-outlet pipe; 3401-first ring body; 3402-first through groove; 3403-second ring body; 3404-second through groove; 3405-fixing block; 3406-groove; 3407-fourth ring body; 3408-third ring body; 35-rectifier plate; 36-through hole; 40-water pressure sensor; 41-air pressure sensor; 42-temperature sensor; 43-pressure detection system; 44-exhaust valve body ;45-gas flow meter;46-weighing sensor;47-second valve;5-control system;50-processor unit;51-storage unit;52-signal acquisition unit;53-signal output unit;54-communication unit;6-water collection mechanism;60-outer barrel;61-arc arched through pipe;62-conical through pipe;63-fixing assembly;64-water collection box;65-bracket;66-left conical locking piece;67-right conical locking piece;68-flow guide pipe;69-threaded hole;601-screw;631-hollow disc;632-positioning rod;633-ring body;634-arc groove;635-arc rod;636-clamping block;637-through groove;638-movable rod DETAILED DESCRIPTION Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be considered as illustrative in nature and not restrictive.
[0026] In the description of the present invention, it should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.
[0027] In the description of the present invention, it should be noted that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.
[0028] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.
[0029] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0030] like Figure 1-9 As shown, an embodiment of the present invention provides an exhaust valve detection device, including an air compressor 10, a temperature control water tank 20, a tank body 30, a pressure monitoring system 43 and a control system 5; In one embodiment, in order to facilitate the flow rate control and drying of the gas, the outlet end of the air compressor 10 is connected to a pressure reducing valve 11, a gas dryer 12, a gas pipeline 13 and a first valve 14 in sequence along the gas flow direction. In order to facilitate the pumping of water into the tank body 30 and the temperature control of the water body, and also to facilitate the control of the gas and water entering the tank body 30 through the three-way solenoid valve 31, the water outlet of the temperature control water tank 20 is connected to a water pump 21 and a water flow pipeline 22 in series along the liquid flow direction. The two sides of the tank body 30 are respectively connected to an inlet pipe 32 and an outlet pipe 34. One end of the inlet pipe 32 is connected to the three-way solenoid valve 31. The ends of the gas pipeline 13 and the water flow pipeline 22 are both connected to the three-way solenoid valve. 31 is connected. In order to facilitate the pressure relief of the tank body 30 and to facilitate the testing of exhaust valves of different calibers, a pressure relief valve 33 is provided on the outlet pipe 34. The top of the tank body 30 is connected with exhaust valve bodies 44 of different calibers. In order to facilitate real-time monitoring of the test of the exhaust valve body 44 through the control system 5, a water pressure sensor 40 and an air pressure sensor 41 are respectively provided on the inner wall of the tank body 30, and the outlet of the exhaust valve body 44 is connected in series with a gas flow meter 45. The pressure reducing valve 11, the water pump 21, the three-way solenoid valve 31, the water pressure sensor 40, and the air pressure sensor 41 are all electrically connected to the pressure monitoring system 43 and the control system 5, so as to facilitate the simultaneous monitoring of the air pressure and water pressure in the tank body 30.
[0031] In one embodiment, in order to facilitate the judgment of whether there is water leakage or air condensation in the exhaust valve body 44 during operation through the temperature of the water in the tank body 30 and the weight of the water in the water collecting mechanism 6, a temperature sensor 42 is provided on the tank body 30, and a second valve 47 is provided between the exhaust valve body 44 and the tank body 30. A water collecting mechanism 6 is provided at the lower end of the exhaust valve body 44 near the second valve 47, and a weighing sensor 46 is provided in the water collecting mechanism 6. The weighing sensor 46 and the temperature sensor 42 are both electrically connected to the control system 5. In order to facilitate the digital intelligent monitoring of the test of the exhaust valve body 44, the control system 5 includes a processor unit 50, a storage unit 51, a signal acquisition unit 52, a semaphore output unit 53 and a communication unit 54. The processor unit 50 is used to execute the fluid control algorithm, the storage unit 51 is used to store the control program, the pressure safety threshold table and the test data, the signal acquisition unit 52 respectively collects the numerical values of the analog electrical signals of the water pressure sensor 40, the air pressure sensor 41, the temperature sensor 42, the gas flow meter 45 and the weighing sensor 46, the semaphore output unit 53 is used to control the reversing of the pressure reducing valve 11, the water pump 21 and the three-way solenoid valve 31, and the communication unit 54 is connected to the remote monitoring host computer via wireless transmission.
[0032] In one embodiment, the water collecting mechanism 6 includes an outer barrel 60, an arc-shaped through-tube 61, a tapered through-tube 62, a fixing assembly 63, and a left tapered locking piece 66 and a right tapered locking piece 67 locked on the exhaust valve body 44 by bolts; the fixing assembly 63 includes a hollow disc 631, a ring body 633, and a bracket 65 fixedly connected to the hollow disc 631, and a movable rod 638 fixedly connected to the ring body 633, a positioning rod 632 fixedly connected to the hollow disc 631 and a clamping block 636 rotatably connected to the ring body 633 through a pin, an arc-shaped groove 634 is provided on the ring body 633, the positioning rod 632 is slidably connected to the inner side wall of the arc-shaped groove 634, the inner ring of the ring body 633 is rotatably connected to the arc-shaped rod 635 through a fixing block, and the other end of the arc-shaped rod 635 is rotatably connected to the clamping block 636 through a pin; the outer barrel 60 and the arc-shaped through-tube 61 The arc-shaped through-tube 61 is fixedly connected to both sides of the through-slot 637 of the hollow disc 631, and the arc-shaped through-tube 61 is located on the side of the through-slot 637 close to the positioning rod 632; the large open end of the tapered through-tube 62 is fixedly connected to the outer side of the through-slot 637 of the hollow disc 631, and its axial position is coaxially aligned with the installation position of the outer barrel 60; the bottom of the left tapered locking piece 66 to the bottom of the right tapered locking piece 67 form an inclined plane, and the right tapered locking piece 67 is connected to the guide pipe 68. The weighing sensor is fixedly mounted on the bracket 65, and a water collecting box 64 is provided on the top thereof; the rotating ring body 633 causes the arc-shaped groove 634 to drive the positioning rod 632 to slide, thereby causing the arc-shaped rod 635 to push the clamping block 636 to rotate around the pin shaft, and the side wall of the exhaust valve body 44 is clamped or released through the movable rod 638, the screw 601 and the threaded hole 69; the liquid is sprayed to the outer barrel 60 under high pressure. The liquid flows downward through the arc-shaped through-tube 61 via the through-slot 637, then falls through the tapered through-tube 62, flows along the inclined surface of the left tapered locking piece 66, and enters the right tapered locking piece 67. It is then discharged through the guide pipe 68, and the water collection box 64 receives the liquid, allowing the weighing sensor 46 to monitor the weight in real time. In one embodiment, in order to make the water flow velocity entering the tank body 30 uniform and eliminate the influence of water vortex on the test, the interior of the tank body 30 is fixedly connected with a rectifier plate 35, and the number of the rectifier plates 35 is three. The three rectifier plates 35 are all provided with through holes 36 and are staggered. In order to reduce the water flow velocity and reduce noise during pressure relief, the inner wall of the outlet pipe 34 is fixedly connected with a first ring body 3401, a second ring body 3403 and a third ring body 3408. A first through groove 3402 is provided on one side of the first ring body 3401, a second through groove 3404 is provided on one side of the second ring body 3403, and a through groove 3406 is provided on the inner wall of the outlet pipe 34 near the second ring body 3407. 3 is fixedly connected to a fixing block 3405 on one side, and a groove 3406 is formed on one side of the fixing block 3405. One side of the third ring body 3408 is connected to the fourth ring body 3407. In order to facilitate gradient diversion of water flow, the axial thickness of the first ring body 3401 is less than the axial thickness of the second ring body 3403. In order to facilitate secondary diversion of water flow, the number of first through grooves 3402 is several and equidistantly distributed along the circumferential direction of the first ring body 3401, the number of second through grooves 3404 is several and equidistantly distributed along the circumferential direction of the second ring body 3403, and the second through grooves 3404 and the first through grooves 3402 are staggered in the axial direction.
[0033] In addition, the present invention also provides a device-based testing process, comprising the following steps: Step 1: Start the air compressor 10 to fill the tank 30 with dry air, continuously monitor the pressure drop rate through the air pressure sensor 41, and synchronously record the air leakage from the exhaust port of the exhaust valve body 44 through the gas flow meter 45. After determining the exhaust performance, open the pressure relief valve 33 to release the pressure; Step 2: Control the three-way solenoid valve 31 to connect the water pipe 22 and the inlet pipe 32, and start the water pump 21 to inject temperature-controlled water into the tank 30. At the same time, start the air compressor 10 and control the three-way solenoid valve 31 to connect the gas pipe 13 and the inlet pipe 32 to introduce air into the tank 30. Adjust the air flow rate by controlling the pressure reducing valve 11 to simulate the pipe filling and exhaust working condition, and record the stable value of the exhaust volume of the exhaust valve body 44; Step 3: Gradually increase the airflow rate by controlling the pressure reducing valve 11, and use the gas flow meter 45 to record the limit value of the exhaust volume of the exhaust valve body 44 tending to be stable, to determine the limit exhaust volume of the exhaust valve body 44, and determine whether the gas flow meter 45 is leaking or condensing water by combining the weight added in the water collecting mechanism 6 with the water temperature detected by the temperature sensor 42; Step 4: Determine the exhaust valve performance through the preset threshold value and temperature and weight algorithm in the control system 5, and upload it to the host computer through wireless transmission.
[0034] In one embodiment, especially in step one, the air pressure in the tank body 30 is monitored by the air pressure sensor 41. When the threshold pressure for testing the exhaust valve body 44 is reached, the first valve 14 is closed and the pressure is maintained for 30 minutes. The air pressure drop value of the tank body 30 and the exhaust volume of the exhaust valve body 44 are recorded to determine whether the exhaust valve body 44 is qualified. In step two, the temperature of water is controlled by the temperature control water tank 20 and the water is injected into the tank body 30, and the volume of the injected water is 80% of the volume of the tank body 30.
[0035] When the present invention is working: first, start the air compressor 10, open the first valve 14, and the compressed gas passes through the gas dryer 12 and the three-way solenoid valve 31 into the tank body 30. The three-way solenoid valve 31 maintains the conduction between the gas pipeline 13 and the inlet pipe 32 under normal conditions, and opens the second valve 47 of the exhaust valve body 44 to be tested. The value of the air pressure sensor 41 in the tank body 30 is collected in real time through the signal acquisition unit 52 in the control system 5, and then the value of the air pressure drop in the tank body 30 per unit time can be calculated by the processor unit 50, so that the air pressure drop rate can be continuously monitored, and the pressure drop rate can be continuously monitored. The gas leakage at the exhaust port of the exhaust valve body 44 is synchronously recorded by collecting the value of the gas flow meter 45 to determine the exhaust performance of the exhaust valve body 44. The air pressure in the tank body 30 is monitored by the air pressure sensor 41. When the threshold pressure of the exhaust valve body 44 is reached, the first valve 14 is closed and the pressure is maintained for 30 minutes. The air pressure drop value of the tank body 30 and the exhaust volume of the exhaust valve body 44 are recorded to determine whether the exhaust valve body 44 is qualified. The recorded data is stored in the storage unit 51 and wirelessly transmitted to a remote host computer for real-time monitoring via the communication unit 54. The pressure relief valve 33 is opened to release the pressure. Then, the pressure relief valve 33 is closed, and the three-way solenoid valve 31 is controlled by the signal output unit 53 in the control system 5 to conduct the water flow pipeline 22 and the inlet pipe 32, and the water pump 21 is started to inject temperature-controlled water into the tank body 30. The water temperature is controlled by the temperature control water tank 20 to be injected into the tank body 30, and the volume of the injected water is 80% of the volume of the tank body 30. The water pump 21 is closed, the first valve 14 is opened, and the air compressor 10 is started at the same time to control the three-way solenoid valve 31 to conduct the gas pipeline 13 and the inlet pipe 32 to pass air into the tank body 30. , and then the signal output unit 53 is used to control the pressure reducing valve 11 to adjust the airflow velocity. By controlling the pressure reducing valve 11 to adjust the valve opening, the gas flow velocity is regulated. This simulates the pipe filling and exhaust working condition. The rectifying plate 35 provided in the tank body 30 can adjust the uniformity of the water flow, eliminate the vortex effect generated by the high-pressure water flow injected into the tank body 30, and improve the accuracy of the exhaust valve body 44 during testing. The signal acquisition unit 52 and the processor unit 50 monitor the dynamic change curves of the water pressure and air pressure in real time during the test process, and record the stable value of the exhaust volume of the exhaust valve body 44. Among them, the air flow rate is gradually increased by controlling the opening of the pressure reducing valve 11, and the limit value of the exhaust volume of the exhaust valve body 44 tends to be stable is recorded by the gas flow meter 45 to determine the limit exhaust volume of the exhaust valve body 44. The weight gain of the water body in the water collecting mechanism 6 per unit time is combined with the water temperature detected by the temperature sensor 42 to determine whether the gas flow meter 45 is leaking or condensing water. The data analysis algorithm processed by the processor unit 50 distinguishes between water leakage, and the continuous weight gain of the water body per unit time and the intermittent weight gain caused by the temperature drop of the condensed water per unit time are used to determine whether the exhaust valve body 44 is leaking or condensing water. Finally, the exhaust valve performance is determined by the threshold value preset by the processor unit 50 in the control system 5 and the temperature and weight algorithm, and the record is stored in the storage unit 51 and wirelessly transmitted to the remote host computer through the communication unit 54. When the pressure relief valve 33 is opened to release pressure, the high-pressure water flow in the tank body 30 flows through the outlet pipe 34, and realizes gradient diversion when passing through the first ring body 3401 and the second ring body 3403. Part of the water flow flows through the first through groove 3402 and the second through groove 3404; at the same time, when the water flow circulating through the first ring body 3401 and the second ring body 3403 passes through the fixed block 3405, part of the water flow is buffered into the groove 3406, and the other part of the water flow flows through the gap between the fixed block 3405 and the outlet pipe 34, and flows out through the buffer of the third ring body 3408 and the fourth ring body 3407, thereby slowing down the water flow rate, reducing the friction between the water flow and the outlet pipe 34, and reducing noise; The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications and substitutions within the technical scope disclosed in the present invention, and such modifications and substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.
Claims
1. An exhaust valve detection device, characterized in that: It includes an air compressor (10), a temperature-controlled water tank (20), a tank body (30), a pressure monitoring system (43) and a control system (5); The outlet end of the air compressor (10) is connected to a pressure reducing valve (11), a gas dryer (12), a gas pipeline (13) and a first valve (14) in sequence along the gas flow direction. The water outlet of the temperature control water tank (20) is connected to a water pump (21) and a water flow pipeline (22) in sequence along the liquid flow direction. The two sides of the tank body (30) are connected to an inlet pipe (32) and an outlet pipe (34) respectively. One end of the inlet pipe (32) is connected to a three-way solenoid valve (31). The ends of the gas pipeline (13) and the water flow pipeline (22) are connected to the three-way solenoid valve (31). The tank body (30) is connected to the water pump (21), the outlet pipe (34) is provided with a pressure relief valve (33), the top of the tank body (30) is connected to the exhaust valve body (44) of different calibers, the inner wall of the tank body (30) is provided with a water pressure sensor (40) and an air pressure sensor (41), the outlet of the exhaust valve body (44) is connected in series with a gas flow meter (45), the pressure reducing valve (11), the water pump (21), the three-way solenoid valve (31), the water pressure sensor (40), and the air pressure sensor (41) are all electrically connected to the pressure monitoring system (43) and the control system (5).
2. The exhaust valve detection device according to claim 1, characterized in that: A temperature sensor (42) is provided on the tank body (30), a second valve (47) is provided between the exhaust valve body (44) and the tank body (30), a water collecting mechanism (6) is provided at the lower end of the exhaust valve body (44) near the second valve (47), a weighing sensor (46) is provided in the water collecting mechanism (6), and both the weighing sensor (46) and the temperature sensor (42) are electrically connected to the control system (5).
3. The exhaust valve detection device according to claim 1, characterized in that: The control system (5) includes a processor unit (50), a storage unit (51), a signal acquisition unit (52), a signal output unit (53) and a communication unit (54). The processor unit (50) is used to execute a fluid control algorithm. The storage unit (51) is used to store a control program, a pressure safety threshold table and test data. The signal acquisition unit (52) respectively acquires the values of analog electrical signals from a water pressure sensor (40), an air pressure sensor (41), a temperature sensor (42), a gas flow meter (45) and a weighing sensor (46). The signal output unit (53) is used to control the reversing of a pressure reducing valve (11), a water pump (21) and a three-way solenoid valve (31). The communication unit (54) is connected to a remote monitoring host computer via wireless transmission.
4. The exhaust valve detection device according to claim 2, characterized in that: A rectifier plate (35) is fixedly connected to the interior of the tank body (30), and the number of the rectifier plates (35) is three. Through holes (36) are provided on the three rectifier plates (35) and are distributed in a staggered manner.
5. The exhaust valve detection device according to claim 1, characterized in that: A first ring body (3401), a second ring body (3403) and a third ring body (3408) are fixedly connected to the inner wall of the outlet pipe (34); a first through groove (3402) is provided on one side of the first ring body (3401); a second through groove (3404) is provided on one side of the second ring body (3403); a fixing block (3405) is fixedly connected to the inner wall of the outlet pipe (34) on a side close to the second ring body (3403); a groove (3406) is provided on one side of the fixing block (3405); and a fourth ring body (3407) is connected to one side of the third ring body (3408).
6. The exhaust valve detection device according to claim 5, characterized in that: The axial thickness of the first ring body (3401) is smaller than the axial thickness of the second ring body (3403).
7. The exhaust valve detection device according to claim 6, characterized in that: The number of the first through grooves (3402) is several and they are evenly distributed along the circumferential direction of the first ring body (3401); the number of the second through grooves (3404) is several and they are evenly distributed along the circumferential direction of the second ring body (3403); the second through grooves (3404) and the first through grooves (3402) are staggered in the axial direction.
8. A testing process based on the device according to claims 1-7, characterized in that: The following steps are involved: Step 1: Start the air compressor (10) to fill the tank (30) with dry air, continuously monitor the pressure drop rate through the air pressure sensor (41), and synchronously record the amount of air leakage from the exhaust port of the exhaust valve body (44) through the gas flow meter (45). After determining the exhaust performance, open the pressure relief valve (33) to release the pressure; Step 2: Control the three-way solenoid valve (31) to connect the water flow pipe (22) and the inlet pipe (32), and start the water pump (21) to inject temperature-controlled water into the tank body (30). At the same time, start the air compressor (10) and control the three-way solenoid valve (31) to connect the gas pipe (13) and the inlet pipe (32) to introduce air into the tank body (30). Adjust the air flow rate by controlling the pressure reducing valve (11), simulate the pipe filling and exhaust working condition, and record the stable value of the exhaust volume of the exhaust valve body (44); Step 3: gradually increase the air flow rate by controlling the pressure reducing valve (11), record the limit value of the exhaust volume of the exhaust valve body (44) tending to be stable through the gas flow meter (45), determine the limit exhaust volume of the exhaust valve body (44), and determine whether the gas flow meter (45) is leaking or condensing water by combining the weight of the weight added in the water collecting mechanism (6) with the water temperature detected by the temperature sensor (42); Step 4: Determine the exhaust valve performance through the preset threshold value and temperature and weight algorithm in the control system (5), and upload it to the host computer through wireless transmission.
9. The exhaust valve testing process according to claim 8, characterized in that: In step 1, the air pressure in the tank body (30) is monitored by the air pressure sensor (41). When the threshold pressure of the exhaust valve body (44) is reached, the first valve (14) is closed and the pressure is maintained for 30 minutes. The air pressure drop value of the tank body (30) and the exhaust volume of the exhaust valve body (44) are recorded to determine whether the exhaust valve body (44) is qualified.
10. The exhaust valve testing process according to claim 8, characterized in that: In step 2, the temperature of water is controlled by the temperature control water tank (20) and injected into the tank (30), and the volume of the injected water is 80% of the volume of the tank (30).