Thermal shock resistance testing device for automobile exhaust purification catalyst

Abstract

The utility model relates to the technical field of automobile exhaust purification, in particular to a thermal shock resistance testing device for an automobile exhaust purification catalyst, which comprises a box body, a box door rotationally connected to the front side of the box body, a mounting plate horizontally arranged in the box body, and a high-temperature chamber and a low-temperature chamber respectively arranged on the left and right sides of the upper part of the mounting plate in the box body, the mounting plate is slidably connected with a moving plate used for bearing a catalyst to be detected, the moving plate can linearly reciprocate between the high-temperature chamber and the low-temperature chamber, the high-temperature chamber and the low-temperature chamber are separated through an isolation cabin, a channel of the isolation cabin is internally slidably connected with an induction door, and the induction door can automatically open and close the channel according to the position of the moving plate. According to the thermal shock resistance testing device for the automobile exhaust purification catalyst, the thermal shock resistance of the catalyst can be accurately evaluated by simulating thermal shock conditions during cold start of an automobile, and the testing process is simplified and the operation difficulty is reduced through automatic control.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile exhaust purification, especially relates to a heat shock test device for automobile exhaust purification catalyst. BACKGROUND

[0002] In the automobile exhaust treatment system, the catalyst is the key component of converting harmful gas into harmless gas, especially in the cold start of the automobile, the catalyst needs to be quickly heated to reach the temperature range of effective conversion of the exhaust gas, this rapid heating process (heat shock) puts high requirements on the structural strength and durability of the catalyst, if the catalyst cannot withstand this heat shock, may cause cracking, fragmentation and other failure problems, thereby affecting the exhaust purification effect and the normal operation of the automobile, therefore, developing a test device capable of simulating the heat shock conditions of the cold start of the automobile and accurately evaluating the heat shock resistance of the catalyst is of great significance to improve the quality and reliability of the catalyst. SUMMARY

[0003] In order to solve the above technical problems, the utility model provides a heat shock test device for automobile exhaust purification catalyst.

[0004] Technical scheme: a heat shock test device for automobile exhaust purification catalyst, including the box, the box front side rotationally connected with the box door, the box is equipped with the mounting plate in the horizontal, the box is equipped with high temperature room and low temperature room respectively in the left and right sides of the mounting plate upper portion, the inner wall of high temperature room and low temperature room is equipped with heating plate and cooling plate respectively, the mounting plate is equipped with the moving plate for bearing the catalyst to be detected which slides, the moving plate can reciprocate linearly between high temperature room and low temperature room, high temperature room and low temperature room are separated by the isolation cabin, the passage of the isolation cabin lower part is connected with high temperature room and low temperature room, the passage of the isolation cabin is slidably connected with the induction door, the induction door can automatically open and close the passage according to the position of the moving plate, the rear inner wall of high temperature room and low temperature room is provided with temperature sensor, and the box door of the box is equipped with the controller.

[0005] Further, one synchronous pulley is rotatably installed on each of the left and right sides of the bottom of the box, a motor is installed in the bottom of the box, the output shaft of the motor is in transmission connection with one of the synchronous pulleys, a synchronous belt is wound on the two synchronous pulleys, a fixed block is fixedly connected to the top surface of the synchronous belt, a looped pull rope is connected between the fixed block and the moving plate, the pull rope is slidably penetrated through the left and right ends of the mounting plate, a part of the pull rope is located above the mounting plate and connected with the moving plate, and the other part of the pull rope is located below the mounting plate and connected with the fixed block.

[0006] Further, two hydraulic cylinders are symmetrically installed in the front and back of the isolation cabin, the extension rods of the two hydraulic cylinders are fixedly connected with the top of the two ends of the induction door.

[0007] Further, the air pump on the left side is connected with the lower part and the upper part of the high-temperature chamber through the air pipe, and the air pump on the right side is connected with the lower part and the upper part of the low-temperature chamber through the air pipe.

[0008] Further, the inner wall of the box body and the inner wall of the box door are provided with heat preservation layers.

[0009] Further, the outer bottom of the box body is connected with a plurality of rollers.

[0010] Beneficial effects: the automobile exhaust purification catalytic converter heat shock resistance testing device provided by the utility model can accurately evaluate the heat shock resistance performance of the catalytic converter by simulating the heat shock condition when the automobile is cold started, and the testing process is simplified and the operation difficulty is reduced through automatic control. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0012] Figure 2 It is an internal structure sectional view of the box body of the utility model.

[0013] Figure 3 It is a separation structure sectional view of the isolation cabin of the utility model.

[0014] Figure 4 It is a three-dimensional structure sectional view of the mounting plate of the utility model.

[0015] Figure 5 It is a three-dimensional structure schematic view of the air pump and the air pipe of the utility model.

[0016] Among them, the above-mentioned drawing includes the following sign: 1-box body, 101-box door, 102-high temperature chamber, 103-low temperature chamber, 2-mounting plate, 3-heating plate, 4-cooling plate, 5-isolation cabin, 6-induction door, 7-moving plate, 8-temperature sensor, 9-controller, 10-driving wheel, 11-motor, 12-synchronous belt, 13-fixed block, 14-pull rope, 15-hydraulic cylinder, 16-air pump, 17-air pipe, 18-roller. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with specific implementation manners and with reference to the drawings. It should be understood that these descriptions are only exemplary, and are not intended to limit the scope of the utility model. In addition, in the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0018] Please refer to Figures 1-5The utility model relates to a kind of automobile exhaust purification catalyst heat shock resistance testing device, including box 1, box 1 front side rotationally connected with box door 101, box 1 inside horizontal installation plate 2 is equipped with, box 1 inside installation plate 2 upper left and right sides are equipped with high temperature chamber 102 and low temperature chamber 103 respectively, high temperature chamber 102 and low temperature chamber 103 are used to simulate the high temperature and low temperature environment that catalyst may encounter in actual use, heating plate 3 and cooling plate 4 are respectively mounted on the inner wall of high temperature chamber 102 and low temperature chamber 103, slidingly connected with the moving plate 7 for carrying the catalyst to be detected on installation plate 2, moving plate 7 can be reciprocated linearly between high temperature chamber 102 and low temperature chamber 103, to simulate the cold and hot alternating impact that catalyst is subjected to in actual use, high temperature chamber 102 and low temperature chamber 103 are separated by isolation cabin 5, the passage of connecting high temperature chamber 102 and low temperature chamber 103 is opened in the lower part of isolation cabin 5, slidingly connected with inductive door 6 in the passage of isolation cabin 5, position sensor (not shown in the figure) is provided on inductive door 6, when moving plate 7 moves close to inductive door 6, inductive door 6 opens passage automatically, when moving plate 7 moves away from inductive door 6, inductive door 6 closes passage automatically, temperature sensor 8 is arranged on the inner wall of the rear side of high temperature chamber 102 and low temperature chamber 103, and two temperature sensors 8 are used for monitoring the temperature of high temperature chamber 102 and low temperature chamber 103 in real time respectively, controller 9 is installed outside the box door 101 of box 1, and the position sensor and temperature sensor 8 of heating plate 3, cooling plate 4 and inductive door 6 are electrically connected with controller 9, the working state of heating plate 3 and cooling plate 4 is adjusted by controller 9, to realize the accurate control of the temperature of high temperature chamber 102 and low temperature chamber 103.

[0019] Rotatably mounted with one synchronous pulley 10 on the left and right sides of the bottom of box 1 in the bottom of box 1, motor 11 is installed, the output shaft of motor 11 is drivingly connected with one of the two synchronous pulleys 10, synchronous belt 12 is wound on the two synchronous pulleys 10, the top surface of synchronous belt 12 is fixedly connected with fixed block 13, and annular pull rope 14 is connected between fixed block 13 and moving plate 7, pull rope 14 is made of heat-resistant and cold-resistant material, and has good wear resistance and tensile strength, pull rope 14 is slidably penetrated through the left and right ends of installation plate 2, a part of pull rope 14 is located above installation plate 2 and connected with moving plate 7, and the other part of pull rope 14 is located below installation plate 2 and connected with fixed block 13, under the traction of pull rope 14, the movement of fixed block 13 and moving plate 7 can be synchronized.

[0020] Two hydraulic cylinders 15 are symmetrically installed in isolation cabin 5, the top two ends of inductive door 6 are fixedly connected with the extension rods of the two hydraulic cylinders 15, when moving plate 7 approaches the passage, inductive door 6 is automatically opened by the extension of the extension rods of hydraulic cylinder 15, when moving plate 7 passes through the passage, inductive door 6 is automatically closed by the contraction of the extension rods of hydraulic cylinder 15.

[0021] The left air pump 16 is connected with the lower part and the upper part of the high-temperature chamber 102 through the air pipe 17, and the right air pump 16 is connected with the lower part and the upper part of the low-temperature chamber 103 through the air pipe 17.

[0022] The inner wall of the box body 1 and the inner wall of the box door 101 are provided with a heat preservation layer, which can reduce heat loss and improve test efficiency.

[0023] The outer bottom of the box body 1 is connected with the rolling wheels 18, which facilitates the movement and transportation of the whole device.

[0024] Working principle: when in use, first, the catalytic converter to be tested is fixed on the top surface of the moving plate 7, then the box door 101 is closed to ensure the sealing of the box body 1, then the temperature values of the high-temperature chamber 102 and the low-temperature chamber 103 are set through the controller 9, the controller 9 adjusts the high-temperature chamber 102 and the low-temperature chamber 103 to the set temperature according to the temperature data fed back by the temperature sensor 8 and through the control of the heating plate 3 and the cooling plate 4, so as to simulate the high-temperature and low-temperature environment encountered by the catalytic converter in actual use, then the synchronous pulley 10 connected with the motor 11 is driven to rotate forward or reverse, so that the synchronous belt 12 drives the fixed block 13 to move linearly, then the fixed block 13 drives the moving plate 7 to move linearly through the pull rope 14, in this process, the passage of the isolation cabin 5 is opened or closed automatically according to the position of the moving plate 7 through the inductive door 6, so as to ensure the continuity of the movement of the moving plate 7 and reduce the air exchange in the high-temperature chamber 102 and the low-temperature chamber 103, and ensure the test accuracy, specifically, the opening and closing of the inductive door 6 are driven by the synchronous extension and contraction of the extension rods of the two hydraulic cylinders 15, in the test process, the two air pumps 16 work synchronously to accelerate the air circulation in the high-temperature chamber 102 and the low-temperature chamber 103, and improve the temperature uniformity, finally, the data change and performance of the catalytic converter in the test process are recorded and evaluated through the controller 9.

[0025] Although the utility model is described in detail with reference to the above embodiment, it is obvious to those skilled in the art through the disclosure that various changes or modifications can be made to the utility model without departing from the principles and spirit of the utility model defined in the claims, therefore, the detailed description of the embodiment of the disclosure is only used for explanation, not for limiting the utility model, and the protection range is defined by the content of the claims.

Claims

1. A heat shock resistance testing device for automobile exhaust purification catalyst, comprising a box (1), a box door (101) is rotatably connected to the front side of the box (1), characterized in that: The box (1) is horizontally provided with a mounting plate (2), the box (1) is provided with a high-temperature chamber (102) and a low-temperature chamber (103) on the left and right sides of the upper portion of the mounting plate (2), the inner walls of the high-temperature chamber (102) and the low-temperature chamber (103) are respectively provided with a heating plate (3) and a cooling plate (4), the mounting plate (2) is slidably connected with a moving plate (7) for carrying a catalytic converter to be detected, the moving plate (7) can linearly reciprocate between the high-temperature chamber (102) and the low-temperature chamber (103), the high-temperature chamber (102) and the low-temperature chamber (103) are separated by an isolation cabin (5), the isolation cabin (5) is provided with a passage connecting the high-temperature chamber (102) and the low-temperature chamber (103) at the lower portion, the passage of the isolation cabin (5) is slidably connected with an induction door (6), the induction door (6) can automatically open and close the passage according to the position of the moving plate (7), the rear inner walls of the high-temperature chamber (102) and the low-temperature chamber (103) are provided with temperature sensors (8), and the box door (101) of the box (1) is provided with a controller (9).

2. The heat shock test device for a catalytic converter for purifying exhaust gas of an automobile according to claim 1, characterized in that: The box (1) is rotatably provided with a synchronous pulley (10) on the left and right sides of the bottom portion, the box (1) is provided with a motor (11) at the bottom portion, the output shaft of the motor (11) is in transmission connection with one of the synchronous pulleys (10), the synchronous belts (12) are wound on the two synchronous pulleys (10), the top surfaces of the synchronous belts (12) are fixedly connected with fixing blocks (13), the fixing blocks (13) and the moving plate (7) are connected with a ring-shaped pull rope (14), the pull rope (14) slidably penetrates through the left and right ends of the mounting plate (2), one part of the pull rope (14) is located above the mounting plate (2) and connected with the moving plate (7), and the other part of the pull rope (14) is located below the mounting plate (2) and connected with the fixing block (13).

3. The heat shock test device for a catalytic converter for an automobile exhaust gas according to claim 2, characterized by: The isolation cabin (5) is symmetrically provided with two hydraulic cylinders (15) in front and back, the extension rods of the two hydraulic cylinders (15) are fixedly connected with the top two ends of the induction door (6).

4. The heat shock test device for a catalytic converter of an automobile exhaust gas according to claim 3, characterized in that: The box (1) is provided with air pumps (16) on the left and right sides of the bottom portion, the air inlet and the air outlet of the left air pump (16) are connected with the lower portion and the upper portion in the high-temperature chamber (102) through air pipes (17), and the air inlet and the air outlet of the right air pump (16) are connected with the lower portion and the upper portion in the low-temperature chamber (103) through air pipes (17).

5. The heat shock test apparatus for an automobile exhaust gas purifying catalyst according to claim 4, characterized by: The inner walls of the box (1) and the inner walls of the box door (101) are provided with heat preservation layers.

6. The heat shock resistance testing device for an automobile exhaust gas purification catalyst according to claim 5, characterized by: The bottom portion of the box (1) is connected with a plurality of rollers (18).

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