Temperature control valve cold and hot alternating test device

Abstract

The invention relates to the technical field of temperature control valve testing, and discloses a temperature control valve cold and hot alternating testing device which comprises a cold and hot testing machine, a separation cover is fixed in the cold and hot testing machine, a net rack is fixed on the top surface of the separation cover, an air port is formed in the top surface of the separation cover, a fixing plate is fixed in the air port, and a temperature control valve is arranged in the fixing plate. A plurality of first air channels are formed in the fixed plate, two guide plates are fixed to the inner top face of the separation cover, each guide plate is obliquely arranged, a driving assembly is arranged in the separation cover, a flow guide assembly is arranged in the separation cover and used for guiding airflow, and a rotating assembly is arranged in the separation cover. According to the invention, recovery and secondary utilization of hot gas are realized, energy is saved, and the test cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of temperature control valve test, in particular to a temperature control valve cold and hot alternating test device. BACKGROUND

[0002] The temperature control valve cold and hot alternating test device is a device specially used for testing the performance and reliability of temperature control valves in a cold and hot alternating environment. Its core function is to simulate the extreme temperature changes that temperature control valves may encounter in actual use, and to evaluate their adaptability and stability under rapid temperature switching conditions.

[0003] After searching, a valve cold and hot alternating test device is disclosed in Chinese patent CN112082894A, which includes a water tank connected with valve I and valve III, valve I is connected with water pump, pressure stabilizer, valve II and test module in sequence, test module is connected with one-way speed regulating valve at both ends, test module is connected with data collector and controller, test module includes measured valve, electromagnetic heater I, electromagnetic heater II, temperature sensor I, electromagnetic heater II, pressure sensor I and pressure sensor II. The above scheme can effectively detect the pressure and temperature signals of the valve, and the test process is controlled by signal transmission, which can effectively avoid personnel supervision and high-temperature dangerous operation. However, the above scheme still has the following shortcomings in actual use: When the temperature control valve is tested for cold and heat, the device first heats up, and the temperature control valve is treated for heat resistance. Then the device cools down, and the temperature control valve is treated for cold resistance, forming a complete test cycle. The above scheme does not have the function of recycling the hot gas and cold gas generated during the test process. If the device lacks the function of recycling hot gas and cold gas, it will significantly reduce the energy utilization efficiency. Specifically, a large amount of high-temperature or low-temperature gas is directly discharged into the environment during the experiment, causing unnecessary consumption of energy. This waste not only increases the operating cost of the equipment, making the enterprise bear higher electricity or fuel costs, but also may exacerbate the dependence on traditional energy sources due to excessive energy consumption, indirectly driving the increase of carbon emissions, which is contrary to the policy guidance of energy saving and emission reduction and green development.

[0004] Therefore, a temperature control valve cold and hot alternating test device needs to be designed to solve the above problems. SUMMARY

[0005] The purpose of the present application is to solve the problems existing in the prior art and provide a temperature control valve cold and hot alternating test device.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme: A temperature control valve cold and heat alternation test device includes a cold and heat test machine. A partition cover is fixed inside the cold and heat test machine. A mesh frame is fixed on the top surface of the partition cover. An air port is opened on the top surface of the partition cover. A fixing plate is fixed inside the air port. A plurality of first air channels are opened on the fixing plate. Two guide plates are fixed on the inner top surface of the partition cover. Each guide plate is inclined. A drive assembly is arranged inside the partition cover. The partition cover is equipped with a flow guiding component to guide airflow; The partition cover is equipped with a rotating component inside; The partition cover is equipped with two gas storage components for recovering hot or cold air.

[0007] As a preferred embodiment of the present invention, the drive assembly includes a mounting frame fixed inside the partition cover. A motor is mounted on one end of the mounting frame, and a reciprocating lead screw is rotatably mounted on the mounting frame. One end of the reciprocating lead screw is connected to the output shaft of the motor. A movable seat is threaded onto the reciprocating lead screw. A limit frame is fixed on the top surface of the movable seat. A sliding plate is slidably disposed on the limit frame. Racks are fixed at both ends of the sliding plate. A protrusion is fixed on the top surface of the sliding plate. A slide rail is provided on the limit frame, and the protrusion slides in the slide rail. Push rods are fixed at both ends of the sliding plate.

[0008] As a preferred embodiment of the present invention, the flow guiding assembly includes a flow guiding hood, which is fixed on the inner top surface of the partition hood and is positioned directly opposite the air inlet. A rotating rod is rotatably mounted on the flow guiding hood, and a rotating plate is fixed at the top end of the rotating rod. A plurality of second air passages are provided on the rotating plate, and a plurality of sealing plates are fixed on the top surface of the rotating plate.

[0009] As a preferred embodiment of the present invention, the rotating assembly includes two transmission rods, both of which are rotatably mounted inside the partition cover. Both transmission rods are connected to the rotating rod via a transmission belt, and each transmission rod is fixedly fitted with a gear.

[0010] As a preferred embodiment of the present invention, the two gas storage components are respectively located on both sides of the mounting frame. Each gas storage component includes a gas storage tank, and the two gas storage tanks are connected to each other. The gas storage tank is fixed inside the partition cover. An air pipe is connected to the gas storage tank. The end of the air pipe away from the gas storage tank is connected to the guide cover. A sliding plug is slidably connected inside the gas storage tank. A crossbar is fixed to the side of the sliding plug. The end of the crossbar away from the sliding plug extends to the outside of the gas storage tank and is fixed with a fixing block. Two symmetrically arranged inclined surfaces are provided on the fixing block.

[0011] As a preferred embodiment of the present invention, a plurality of first airways are arranged in a circumferential array, and a plurality of second airways are arranged in a circumferential array.

[0012] As a preferred embodiment of the present invention, the transmission wrap angle of the transmission belt is greater than 120°.

[0013] As a preferred embodiment of the present invention, the fixed plate, the rotating plate and the rotating rod are arranged coaxially.

[0014] As a preferred technical solution of the present invention, in the initial state, one of the fixing blocks is set close to the corresponding gas storage tank, and the other fixing block is set away from the corresponding gas storage tank.

[0015] As a preferred embodiment of the present invention, the inner surface of the limiting frame is in contact with the side surface of the sliding plate, and the sliding plate is made of rubber material.

[0016] The present invention has the following beneficial effects: 1. The device is equipped with two gas storage components, located on both sides of the mounting frame. Each gas storage component includes a gas storage tank, gas pipe, sliding plug, crossbar, and fixing block. Before conducting the cold resistance test on the temperature control valve, the motor drives the reciprocating screw to rotate, causing the moving seat to move, which in turn drives the sliding plate to move. During the movement, one set of gears meshes with the rack, driving the rotating plate to rotate, so that the second gas channel is aligned with the first gas channel. At the same time, the push rod pushes the fixing block to move the sliding plug, drawing the hot gas in the cold and heat test chamber into the gas storage tank. Before conducting the heat resistance test on the next batch of temperature control valves, the motor drives the moving seat to move in the opposite direction, and the push rod pushes the fixing block on the other side to move the sliding plug, forcing the hot gas in the gas storage tank out. The hot gas then enters the guide hood through the gas pipe and is discharged back into the cold and heat test chamber, realizing the recovery and reuse of hot gas, saving energy and reducing test costs. 2. The flow guide shroud in the flow guide assembly is fixed to the top surface inside the partition shroud and is positioned directly opposite the air inlet. A rotating plate is fixed on the rotating rod, and a second air passage is opened on the rotating plate and a sealing plate is fixed thereon. In the initial state, the sealing plate blocks the first air passage, and gas cannot pass through. During the movement of the moving seat, the rotating rod is driven to rotate through the meshing transmission of the rack and pinion, which causes the rotating plate to rotate, thereby aligning or offsetting the first air passage and the second air passage, thus controlling the flow of gas. When the moving seat is reset, another set of gears meshes with the rack and pinion, driving the rotating rod to reset, causing the sealing plate to block the first air passage again, thus achieving automatic sealing of the air passage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a temperature control valve cold and heat alternation test device proposed in this invention; Figure 2 This is a schematic diagram of the internal structure of the thermal testing machine; Figure 3 This is a schematic diagram of the internal structure of the partition cover; Figure 4 This is a cross-sectional view of the partition cover. Figure 5 for Figure 4 Enlarged view of the structure at point A; Figure 6 A schematic diagram of the drive assembly and two gas storage assemblies; Figure 7 A schematic diagram of the structure when the push rod pushes the fixed block; Figure 8 A schematic diagram of the structure of the fixed plate, the rotating plate, and the rotating rod; Figure 9 This is a cross-sectional view of the gas storage tank.

[0018] In the diagram: 1. Cold and heat testing machine; 2. Separator cover; 21. Air inlet; 211. Fixing plate; 212. First air passage; 22. Guide plate; 3. Space frame; 41. Mounting frame; 42. Motor; 43. Reciprocating lead screw; 44. Moving seat; 441. Limiting frame; 442. Sliding plate; 4421. Protrusion; 4422. Push rod; 443. Rack; 51. Flow guide; 52. Rotating rod; 53. Rotating plate; 54. Second air passage; 55. Sealing plate; 61. Transmission rod; 62. Gear; 63. Transmission belt; 71. Air tank; 711. Air pipe; 72. Sliding plug; 73. Crossbar; 74. Fixing block. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Reference Figures 1-9 A temperature control valve hot and cold alternation test device includes a hot and cold test machine 1. A partition cover 2 is fixed inside the hot and cold test machine 1. A mesh frame 3 is fixed on the top surface of the partition cover 2. The mesh frame 3 is used to place the workpiece. During the test, the operator can place the temperature control valve on the mesh frame 3. An air port 21 is opened on the top surface of the partition cover 2. A fixing plate 211 is fixed inside the air port 21. A plurality of first air channels 212 are opened on the fixing plate 211. The plurality of first air channels 212 are arranged in a circumferential array. Two guide plates 22 are fixed on the inner top surface of the partition cover 2. Each guide plate 22 is inclined.

[0021] The thermal testing chamber 1 achieves rapid temperature switching through a refrigeration system and a heating system. The refrigeration system consists of a compressor, condenser, expansion valve, and evaporator. The refrigerant is compressed into a high-temperature, high-pressure gas by the compressor, releases heat in the condenser, and becomes liquid. It then passes through the expansion valve to reduce pressure and enters the evaporator to absorb heat and vaporize, thus achieving cooling. The heating system uses electrically energized heating elements to raise the temperature inside the test chamber. During the test, a temperature sensor monitors the temperature inside the chamber in real time, converting the physical signal into an electrical signal and transmitting it to the controller. The controller compares the real-time temperature with a preset program and adjusts the conduction time of the solid-state relay through a PID logic circuit to precisely control the heater power output, ensuring that the temperature remains stable at the set value. The test chamber is also equipped with a pressure sensor and a flow sensor. The pressure sensor monitors the operating pressure of the refrigeration system to prevent equipment damage or test interruption due to abnormal pressure. The flow sensor measures the flow rate of the medium when the opening of the temperature control valve changes, and evaluates the adjustment performance of the temperature control valve at different temperatures, such as the response speed and stability of the flow rate with temperature changes, in conjunction with the temperature data.

[0022] A drive assembly is provided inside the partition cover 2. The drive assembly includes a mounting frame 41, which is fixed inside the partition cover 2. A motor 42 is mounted on one end of the mounting frame 41, and a reciprocating screw 43 is rotatably mounted on the mounting frame 41. One end of the reciprocating screw 43 is connected to the output shaft of the motor 42. A movable seat 44 is threaded onto the reciprocating screw 43. A guide rod is fixed on the mounting frame 41, and the movable seat 44 is slidably mounted on the guide rod. The guide rod provides a limit for the movable seat 44. When the reciprocating screw 43 rotates, the limiting effect of the guide rod prevents the movable seat 44 from rotating with the reciprocating screw 43. The movable seat 44 can move linearly along the mounting frame 41. A limit frame 441 is fixed on the top surface of the movable seat 44. A sliding plate 442 is slidably arranged on the limit frame 441. A rack 443 is fixed at both ends of the sliding plate 442. A protrusion 4421 is fixed on the top surface of the sliding plate 442. A slide rail is opened on the limit frame 441. The protrusion 4421 slides in the slide rail. Push rods 4422 are fixed at both ends of the sliding plate 442. When the motor 42 is running, it can drive the reciprocating screw 43 to rotate. When the reciprocating screw 43 rotates, it drives the movable seat 44 to move. The sliding plate 442 and the two push rods 4422 move accordingly.

[0023] The partition hood 2 is internally equipped with a flow guiding assembly, which includes a flow guiding hood 51. The flow guiding hood 51 is fixed to the inner top surface of the partition hood 2 and is positioned directly opposite the air inlet 21. A rotating rod 52 is rotatably mounted on the flow guiding hood 51, and a rotating plate 53 is fixed to the top of the rotating rod 52. The rotating plate 53 has several second air passages 54, and several sealing plates 55 are fixed to the top surface of the rotating plate 53. In the initial state, as... Figure 6As shown, several sealing plates 55 are respectively positioned opposite several first air passages 212. At this time, the sealing plates 55 block the first air passages 212, preventing gas from flowing through them. A rotating assembly is provided inside the partition cover 2. The rotating assembly includes two transmission rods 61, both of which are rotatably mounted inside the partition cover 2. Both transmission rods 61 are connected to the rotating rod 52 via a transmission belt 63. Each transmission rod 61 is fixedly fitted with a gear 62. In the initial state, its... One rack 443 (hereinafter referred to as rack 443A for ease of understanding) is directly opposite one of the gears 62 (hereinafter referred to as gear A62 for ease of understanding), and the other rack 443 (hereinafter referred to as rack 443B for ease of understanding) is offset from the other gear 62 (hereinafter referred to as gear B62 for ease of understanding). In this state, rack 443A will mesh with gear A62 during the movement and drive gear A62 to rotate. During this process, rack 443B will not mesh with gear B62. The partition cover 2 is equipped with two gas storage components for recovering hot or cold air. The two gas storage components are located on both sides of the mounting frame 41. Each gas storage component includes a gas storage tank 71, and the two gas storage tanks 71 are connected to each other. The gas storage tank 71 is fixed inside the partition cover 2. A gas pipe 711 is connected to the gas storage tank 71. The end of the gas pipe 711 away from the gas storage tank 71 is connected to the guide cover 51. A sliding plug 72 is slidably connected inside the gas storage tank 71. A crossbar 73 is fixed to the side of the sliding plug 72. The end of the crossbar 73 away from the sliding plug 72 extends to the outside of the gas storage tank 71 and is fixed with a fixing block 74. The fixing block 74 is provided with two symmetrically arranged inclined surfaces. In the initial state, one fixing block 74 is set close to the corresponding gas storage tank 71, and the other fixing block 74 is set away from the corresponding gas storage tank 71. When conducting a hot and cold alternating test on the temperature control valve, the operator first places the temperature control valve on the grid frame 3, starts the hot and cold testing machine 1, and first conducts a heat resistance test on the temperature control valve. After the heat resistance test, the inside of the hot and cold testing machine 1 is filled with hot air. Before conducting the cold resistance test, the operator starts the motor 42. When the motor 42 runs, it drives the reciprocating screw 43 to rotate, causing the moving seat 44 to move. Figure 6As shown, in the initial state, the movable seat 44 is located at the end of the mounting bracket 41. When the movable seat 44 moves, it can drive the sliding plate 442 to move. In the initial stage of the movement of the movable seat 44, the rack 443A will mesh with the gear A62 and drive the gear A62 to rotate. When the gear A62 rotates, it drives the corresponding transmission rod 61 to rotate. The rotating transmission rod 61 then drives the rotating rod 52 to rotate through the transmission belt 63, which in turn drives the rotating plate 53 to rotate. After engagement ends, the second air passages 54 rotate to a position directly opposite the first air passages 212. At this point, gas can pass through the aligned first air passages 212 and the second air passages 54. Furthermore, the sliding plate 442 continues to move, and the push rod 4422 on the same side as the rack 443A can contact the inclined surface of the fixed block 74 and apply a pushing force to the fixed block 74. During this process, the friction between the air tank 71 and the slide plug 72 on the same side as the rack 443A cannot overcome the friction of the sliding plate 442. The friction between push rod 4422 and limit frame 441 causes push rod 4422 to push fixed block 74 to move, thereby moving corresponding slide plug 72. During the movement, slide plug 72 can perform a suction action through corresponding air pipe 711, thereby drawing hot air from the hot and cold test machine 1 into air storage tank 71 on the same side as rack 443A, realizing the collection of hot air. When fixed block 74 moves to the limit position, fixed block 74 can no longer move. At this time, under the action of the inclined surface on fixed block 74, push rod 4422 pushes fixed block 74 to move. The rod 4422 can move along the inclined plane and drive the sliding plate 442 to move. When the sliding plate 442 moves, it can drive the protrusion 4421 on it to move, so that the protrusion 4421 moves to be positioned opposite the guide plate 22 near the motor 42. The guide plate 22 is inclined. Under the guidance of the guide plate 22, the protrusion 4421 will move as it passes through the guide plate 22, and drive the sliding plate 442 to move, so that the rack 443B moves to the position opposite the gear B62. After the fixed block 74 on the same side as the rack 443A separates from the push rod 4422, the motor 42 stops running. At this time, the cold resistance test is performed on the temperature control valve by the cold and heat test machine 1. After the test, the staff put the second batch of temperature control valves into the cold and heat test machine 1 and perform the heat resistance test again. Before this, the staff can restart the motor 42 to make the moving seat 44 continue to move. Further, the motor 42 drives the moving seat 44 to continue to move. When the moving seat 44 moves to the end position of the reciprocating screw 43, the moving seat 44 moves in the opposite direction and drives the sliding plate 442 to move in the opposite direction. During the reverse movement, the push rod 4422 on the same side as the rack 443B will first drive the fixed block 74 on the same side to move, causing the sliding plug 72 in the gas storage tank 71 on the same side as the rack 443B to move. When the sliding plug 72 moves, it can push out the gas in the gas storage tank 71 on the same side as the rack 443B, so that the gas enters the guide shroud 51 through the corresponding air pipe 711. Since the two gas storage tanks 71 are connected, the moving seat 44 can discharge the hot gas back into the guide shroud 51 during the reset process, so that the hot gas re-enters the hot and cold test machine 1, realizing the recovery and secondary use of the hot gas.

[0024] During the resetting process of the movable seat 44, the rack 443B will mesh with the gear B62 and drive the gear B62 to rotate. It can be understood that when the gear B62 rotates, it can drive the corresponding transmission rod 61 to rotate, so that the transmission rod 61 drives the rotating rod 52 to rotate through the transmission belt 63, and finally resets the rotating rod 52. When the rotating rod 52 resets, it can drive several sealing plates 55 to reset, so that the several sealing plates 55 move again to the position facing several first air passages 212. At this time, the several sealing plates 55 can block several first air passages 212, thereby achieving the sealing of several first air passages 212.

[0025] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A temperature control valve cold and heat alternation test device, characterized in that, The equipment includes a thermal testing machine (1), a partition cover (2) is fixed inside the thermal testing machine (1), a mesh frame (3) is fixed on the top surface of the partition cover (2), an air vent (21) is opened on the top surface of the partition cover (2), a fixing plate (211) is fixed inside the air vent (211), a plurality of first air passages (212) are opened on the fixing plate (211), two guide plates (22) are fixed on the inner top surface of the partition cover (2), each of the guide plates (22) is inclined, and a driving assembly is provided inside the partition cover (2). The partition cover (2) is provided with a flow guiding component inside to guide airflow; The partition cover (2) is equipped with a rotating component inside; The partition cover (2) is equipped with two gas storage components for recovering hot or cold air.

2. The temperature control valve hot-cold alternation test device according to claim 1, characterized in that, The drive assembly includes a mounting bracket (41) fixed inside the partition cover (2). A motor (42) is mounted on one end of the mounting bracket (41). A reciprocating screw (43) is rotatably mounted on the mounting bracket (41). One end of the reciprocating screw (43) is connected to the output shaft of the motor (42). A movable seat (44) is threaded onto the reciprocating screw (43). A limit frame (441) is fixed on the top surface of the movable seat (44). A sliding plate (442) is slidably arranged on the limit frame (441). A rack (443) is fixed at both ends of the sliding plate (442). A protrusion (4421) is fixed on the top surface of the sliding plate (442). A slide rail is provided on the limit frame (441). The protrusion (4421) slides in the slide rail. A push rod (4422) is fixed at both ends of the sliding plate (442).

3. The temperature control valve cold and heat alternation test device according to claim 2, characterized in that, The flow guiding assembly includes a flow guiding hood (51), which is fixed on the inner top surface of the partition hood (2) and is positioned directly opposite the air inlet (21). A rotating rod (52) is rotatably mounted on the flow guiding hood (51), and a rotating plate (53) is fixed at the top of the rotating rod (52). Several second air passages (54) are opened on the rotating plate (53), and several sealing plates (55) are fixed on the top surface of the rotating plate (53).

4. The temperature control valve cold and heat alternation test device according to claim 3, characterized in that, The rotating assembly includes two transmission rods (61), both of which are rotatably mounted inside the partition cover (2). Both transmission rods (61) are connected to the rotating rod (52) via a transmission belt (63). A gear (62) is fixedly sleeved on each transmission rod (61).

5. The temperature control valve cold and heat alternation test device according to claim 4, characterized in that, The two gas storage components are located on both sides of the mounting frame (41). Each gas storage component includes a gas storage tank (71). The two gas storage tanks (71) are connected to each other. The gas storage tank (71) is fixed inside the partition cover (2). A gas pipe (711) is connected to the gas storage tank (71). The end of the gas pipe (711) away from the gas storage tank (71) is connected to the flow guide cover (51). A sliding plug (72) is slidably connected inside the gas storage tank (71). A crossbar (73) is fixed on the side of the sliding plug (72). The end of the crossbar (73) away from the sliding plug (72) extends to the outside of the gas storage tank (71) and is fixed with a fixing block (74). Two symmetrically arranged inclined surfaces are provided on the fixing block (74).

6. The temperature control valve cold and heat alternation test device according to claim 3, characterized in that, A number of the first airways (212) are arranged in a circumferential array, and a number of the second airways (54) are arranged in a circumferential array.

7. The temperature control valve cold and heat alternation test device according to claim 4, characterized in that, The transmission wrap angle of the transmission belt (63) is greater than 120°.

8. The temperature control valve cold and heat alternation test device according to claim 3, characterized in that, The fixed plate (211), the rotating plate (53), and the rotating rod (52) are arranged coaxially.

9. A temperature control valve hot-cold alternation test device according to claim 5, characterized in that, In the initial state, one of the fixing blocks (74) is set close to the corresponding gas storage tank (71), and the other fixing block (74) is set away from the corresponding gas storage tank (71).

10. A temperature control valve hot-cold alternation test device according to claim 2, characterized in that, The inner surface of the limiting frame (441) is in contact with the side surface of the sliding plate (442), which is made of rubber material.

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