Device and method for evaluating reliability of catalyst carrier

Abstract

The invention relates to the technical field of reliability evaluation of catalyst carriers, in particular to a reliability evaluation device and method of a catalyst carrier, the reliability evaluation device comprises a box body and an air supply device arranged in the box body, the air supply device is further provided with a heater, a sensor is arranged in the box body, and a placing frame is rotatably arranged in the box body. The sensor is installed in the placing frame, a crushing gap is formed in the placing frame, discharging cavities are detachably formed in the positions, on the upper side and the lower side of the crushing gap, in the placing frame, and notches which are formed in a staggered mode are formed in the two discharging cavities correspondingly. Through the driving mechanism for driving the placing frame to rotate and the transmission mechanism for driving the moving seat to move, the purpose of evaluating and testing damaged and complete catalyst carriers at the same time can be achieved, real simulation can be made according to damage leakage of different positions, and compared with a traditional carrier full-coating testing method, the testing method has the advantages that the testing efficiency is improved. And the real decomposition temperature and weightlessness condition of the catalyst carrier can be obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of catalyst carrier reliability evaluation, and particularly to a reliability evaluation device and method for catalyst carriers. Background Art

[0002] Porous ceramic catalyst carriers are usually used as carriers for three-way catalysts, that is, converting carbon monoxide, unburned hydrocarbons, and nitrogen oxides emitted by engines into carbon dioxide, water, and nitrogen. Their porous structure provides a large number of active sites, which is conducive to the dispersion of noble metal catalysts and improves the catalytic efficiency. Reliability evaluation tests are often carried out on catalyst carriers. Existing test devices and methods usually use gaskets and cylinders to fully encapsulate and simulate the packaging unit for the carrier.

[0003] For example, the Chinese patent with the application number CN202311476992.0 discloses a reliability evaluation device for catalyst encapsulation, including: a air supply device, a heater, a temperature sensor, a catalyst carrier, a gasket, a first fixing mechanism, a cylinder, a first bracket, an exhaust pipe, a heating controller, a host computer, a actuation controller, an actuator, a force sensor, a acting ejector rod, a second bracket, a workbench; the catalyst carrier, the gasket, and the cylinder are used to simulate the catalyst packaging unit; it has advantages such as flexible working conditions and load settings, convenient installation, low cost, and strong adaptability. However, when the real catalyst carrier is in use, the catalyst carrier may be damaged after long-term use. If the carrier is fully encapsulated during the reliability test, different positions of damage and leakage cannot be simulated, and thus the true decomposition temperature and weight loss of the catalyst carrier cannot be obtained. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a reliability evaluation device and method for catalyst carriers to solve the technical problem that the catalyst carrier in the prior art may be damaged after long-term use. If the carrier is fully encapsulated during the reliability test, different positions of damage and leakage cannot be simulated, and thus the true decomposition temperature and weight loss of the catalyst carrier cannot be obtained.

[0005] Based on the above purpose, the present invention provides a reliability evaluation device for catalyst carriers, including a box body and an air supply device arranged in the box body. A heater is further arranged on the air supply device. A sensor is arranged in the box body. A placement rack is rotatably arranged in the box body. The sensor is installed in the placement rack. A breaking gap is formed in the placement rack. Feeding cavities are detachably arranged on both the upper and lower sides of the breaking gap in the placement rack. Interleaved notches are respectively formed on the two feeding cavities. The reliability evaluation device further includes:

[0006] A cutting knife, the cutting knife is installed on the inner wall of the box body, and the cutting knife has a double-edge structure, and the double-edge structures respectively correspond to the two notches;

[0007] Moving seats, there are two of the moving seats, and both of the two moving seats are arranged in the box body;

[0008] A driving mechanism for driving the placement rack to rotate;

[0009] A transmission mechanism for driving the moving seats to move.

[0010] Further, the cutting knife is of an arc structure, and the cutting knife corresponds to the crushing gap.

[0011] Further, the catalyst carrier is placed in the material discharging cavity, and the end face of the catalyst carrier is placed in the crushing gap through the notch.

[0012] Further, the driving mechanism includes:

[0013] A cylinder, the cylinder is installed outside the box body, and a rack is installed at the output end of the cylinder;

[0014] A gear, the gear is rotatably installed on the box body, and the gear meshes with the rack;

[0015] A crank, one end of the crank is installed on the other side of the gear, and a pulley is installed at the other end of the crank;

[0016] A slip ring, the pulley is slidably arranged in the slip ring, a chute is opened on the placement rack, and the pulley is also slidably arranged in the chute.

[0017] Further, the transmission mechanism includes:

[0018] A lifting plate, the lifting plate is installed on the slip ring;

[0019] An opening inclined plate, the opening inclined plate is inclined and installed on both sides of the upper end of the lifting plate;

[0020] An opening straight plate, the opening straight plate is installed on the upper end of the box body, and a transmission rod is slidably arranged in the openings of the opening straight plate and the opening inclined plate;

[0021] A push-pull plate, the push-pull plate is installed at the side end of the transmission rod, and the moving seat is installed at the lower end of the push-pull plate.

[0022] Further, an avoidance opening is opened at the upper end of the box body, and the push-pull plate is slidably arranged in the avoidance opening.

[0023] Further, the two moving seats respectively correspond to the placement rack before rotation and the placement rack after rotation.

[0024] Further, when the placement rack is separated from the cutting knife, the catalyst carrier is in a complete state, and the air supply device on one side corresponds to the catalyst carrier in the complete state.

[0025] Further, when the placement rack cooperates with the cutting knife, the catalyst carrier is in a damaged state, and the air supply device on the other side corresponds to the catalyst carrier in the damaged state.

[0026] The present invention also provides a usage method, which is based on the reliability evaluation device of the catalyst carrier as described in any one of the above, and includes the following steps:

[0027] S1. Place the catalyst carriers to be evaluated and tested in the two material storage cavities respectively;

[0028] S2. Start the air supply device and the heater on one side to act on the catalyst carrier in step S1, and monitor the mass change of the catalyst carrier in the complete state by the corresponding sensor in the placement rack to determine its decomposition temperature and weight loss;

[0029] S3. Replace with a new catalyst carrier to be tested, and drive the catalyst carrier in the placement rack to rotate by the driving mechanism, break the catalyst carrier by the cutting knife, and at the same time drive the moving seat to perform synchronous actions through the transmission mechanism;

[0030] S4. Start the air supply device and the heater on the other side to act on the catalyst carrier in step S3, so that the sensor in the placement rack can detect the mass change of the catalyst carrier in the damaged state, and determine the decomposition temperature and weight loss again.

[0031] The beneficial effects of the present invention: By using the reliability evaluation device and method of the catalyst carrier of the present invention, during use, through the driving mechanism that drives the placement rack to rotate and the transmission mechanism that drives the moving seat to move, the purpose of simultaneously evaluating and testing the damaged and complete catalyst carriers can be achieved, and a real simulation can be made for different positions of damage and leakage. Compared with the traditional carrier full-coverage testing method, the real decomposition temperature and weight loss of the catalyst carrier can be obtained more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0033] Figure 1 It is the process flow chart of the present invention;

[0034] Figure 2Schematic diagram of the external structure of the reliability evaluation device for the catalyst carrier in the present invention;

[0035] Figure 3 Schematic diagram of the internal structure of the reliability evaluation device for the catalyst carrier in the present invention;

[0036] Figure 4 Assembly schematic diagram of the driving mechanism and the placement rack in the present invention;

[0037] Figure 5 Assembly schematic diagram of the transmission mechanism in the present invention;

[0038] Figure 6 Schematic diagram of the separated state of the placement rack and the cutting knife in the present invention.

[0039] The markings in the figure are:

[0040] 1. Box body; 2. Air supply device; 3. Sensor; 4. Placement rack; 5. Crushing gap; 6. Material discharging cavity; 7. Notch; 8. Cutting knife; 9. Moving seat; 10. Cylinder; 11. Rack; 12. Gear; 13. Crank; 14. Pulley; 15. Slip ring; 16. Chute; 17. Lifting plate; 18. Opening inclined plate; 19. Opening straight plate; 20. Transmission rod; 21. Pushing and pulling plate; 22. Avoidance opening. Detailed implementation manners

[0041] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following further elaborates on the present invention with reference to specific embodiments.

[0042] It should be noted that unless otherwise defined, the technical terms or scientific terms used in the present invention should have the ordinary meanings understood by those of ordinary skill in the field to which the present invention belongs. The "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right" are only used to indicate relative position relationships, and when the absolute position of the object being described changes, the relative position relationships may also change accordingly.

[0043] An embodiment of the present invention provides a reliability evaluation device for a catalyst carrier, as Figure 1-6As shown, it includes a box body 1 and a air supply device 2 provided in the box body 1. A heater is also provided on the air supply device 2. A sensor 3 is provided in the box body 1. A placement rack 4 is rotatably provided in the box body 1. The sensor 3 is installed in the placement rack 4. A crushing gap 5 is formed in the placement rack 4. Removable material placing cavities 6 are provided on both the upper and lower sides of the crushing gap 5 in the placement rack 4. Interleaved notches 7 are respectively formed in the two material placing cavities 6. The reliability evaluation device further includes:

[0044] A cutting knife 8, which is installed on the inner wall of the box body 1. The cutting knife 8 has a double-edge structure, and the double-edge structures respectively correspond to the two notches 7;

[0045] Two moving seats 9, both of which are provided in the box body 1;

[0046] A driving mechanism for driving the placement rack 4 to rotate;

[0047] A transmission mechanism for driving the moving seat 9 to move.

[0048] In this embodiment, the cutting knife 8 has an arc-shaped structure and corresponds to the crushing gap 5.

[0049] In this embodiment, the catalyst carrier is placed in the material placing cavity 6, and the end face of the catalyst carrier is placed in the crushing gap 5 through the notch 7.

[0050] In this embodiment, the driving mechanism includes:

[0051] A cylinder 10, which is installed outside the box body 1, and a rack 11 is installed at the output end of the cylinder 10;

[0052] A gear 12, which is rotatably installed on the box body 1 and meshes with the rack 11;

[0053] A crank 13, one end of which is installed on the other side of the gear 12, and the other end of the crank 13 is installed with a pulley 14;

[0054] A slip ring 15, the pulley 14 is slidably arranged in the slip ring 15, and a chute 16 is formed on the placement rack 4. The pulley 14 is also slidably arranged in the chute 16.

[0055] In this embodiment, the transmission mechanism includes:

[0056] A lifting plate 17, which is installed on the slip ring 15;

[0057] An opening inclined plate 18, which is inclinedly installed on both sides of the upper end of the lifting plate 17;

[0058] An opening straight plate 19, which is installed on the upper end of the box body 1. A transmission rod 20 is slidably arranged in the openings of the opening straight plate 19 and the opening inclined plate 18;

[0059] The push - pull plate 21 is installed at the side end of the transmission rod 20, and the moving seat 9 is installed at the lower end of the push - pull plate 21.

[0060] A method for the reliability evaluation device of the above - mentioned catalyst carrier includes the following steps:

[0061] S1. Place the catalyst carriers to be evaluated and tested into the two feeding chambers 6 respectively.

[0062] S2. Start the air - supply device 2 and the heater on one side to act on the catalyst carrier in step S1. The sensors 3 in the corresponding placement rack 4 monitor the mass change of the intact catalyst carrier to determine its decomposition temperature and weight loss.

[0063] S3. Replace with a new catalyst carrier to be tested, and drive the catalyst carrier in the placement rack 4 to rotate by the driving mechanism. The cutting knife 8 breaks the catalyst carrier, and at the same time, the transmission mechanism drives the moving seat 9 to perform synchronous movement.

[0064] S4. Start the air - supply device 2 and the heater on the other side to act on the catalyst carrier in step S3, so that the sensors 3 in the placement rack 4 can detect the mass change of the broken - state catalyst carrier, and determine the decomposition temperature and weight loss again.

[0065] In this embodiment, when specifically applying the above step S3, the output end of the cylinder 10 drives the rack 11 to slide, drives the crank 13 to swing through the gear 12, and then drives the placement rack 4 to rotate under the action of the pulley 14 and the slip ring 15, and the cutting knife 8 breaks the catalyst carrier.

[0066] At the same time, during the sliding process of the pulley 14 in the chute 16, it also drives the lifting plate 17 to move downward synchronously through the slip ring 15. Then, under the combined action of the opening inclined plate 18, the transmission rod 20 and the opening straight plate 19, the push - pull plate 21 drives the moving seat 9 to move to the corresponding position of the rotated placement rack 4.

[0067] In this embodiment, as Figure 3 shown, an avoidance opening 22 is provided at the upper end of the box body 1. The push - pull plate 21 slides in the avoidance opening 22 to prevent the broken catalyst debris from affecting the transmission effect of the transmission rod 20 and ensure the accuracy of the reliability test.

[0068] In this embodiment, as Figure 5 shown, the two moving seats 9 respectively correspond to the placement rack 4 before rotation and the placement rack 4 after rotation. The evaluation device can simultaneously evaluate and test the broken and intact catalyst carriers, with stronger adaptability.

[0069] In this embodiment, when the placement rack 4 is separated from the cutting knife 8, the catalyst carrier is in a complete state, and the air supply device 2 on one side corresponds to the catalyst carrier in the complete state.

[0070] In this embodiment, when the placement rack 4 cooperates with the cutting knife 8, the catalyst carrier is in a damaged state, and the air supply device 2 on the other side corresponds to the catalyst carrier in the damaged state.

[0071] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, which are not provided in detail for the sake of brevity.

[0072] The present invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Reliability evaluation device for catalyst carrier, comprising a box body (1) and a air supply device (2) arranged in the box body (1), wherein a heater is further arranged on the air supply device (2), and a sensor (3) is arranged in the box body (1), characterized in that, A placing rack (4) is rotatably arranged in the box body (1), the sensor (3) is installed in the placing rack (4), a crushing gap (5) is formed in the placing rack (4), feeding cavities (6) are detachably arranged on the upper and lower sides of the crushing gap (5) in the placing rack (4), staggered notches (7) are respectively formed in the two feeding cavities (6), and the reliability evaluation device further includes: A cutting knife (8), the cutting knife (8) is installed on the inner wall of the box body (1), the cutting knife (8) has a double-edge structure and the double-edge structures respectively correspond to the two notches (7); Moving seats (9), there are two moving seats (9), and the two moving seats (9) are both arranged in the box body (1); A driving mechanism for driving the placing rack (4) to rotate; A transmission mechanism for driving the moving seats (9) to move.

2. The reliability evaluation device for a catalyst carrier according to claim 1, wherein The cutting knife (8) has an arc-shaped structure, and the cutting knife (8) corresponds to the crushing gap (5).

3. The reliability evaluation device for a catalyst carrier according to claim 1, characterized in that, The catalyst carrier is placed in the feeding cavity (6), and the end face of the catalyst carrier is placed in the crushing gap (5) through the notch (7).

4. The reliability evaluation device for a catalyst carrier according to claim 1, wherein The driving mechanism includes: A cylinder (10), the cylinder (10) is installed outside the box body (1), and a rack (11) is installed at the output end of the cylinder (10); A gear (12), the gear (12) is rotatably installed on the box body (1), and the gear (12) meshes with the rack (11); A crank (13), one end of the crank (13) is installed on the other side of the gear (12), and a pulley (14) is installed at the other end of the crank (13); A slip ring (15), the pulley (14) is slidably arranged in the slip ring (15), a chute (16) is formed in the placing rack (4), and the pulley (14) is also slidably arranged in the chute (16).

5. The reliability evaluation device for a catalyst carrier according to claim 4, wherein The transmission mechanism includes: A lifting plate (17), the lifting plate (17) is installed on the slip ring (15); An opening inclined plate (18), the opening inclined plate (18) is obliquely installed on both sides of the upper end of the lifting plate (17); An opening straight plate (19), the opening straight plate (19) is installed at the upper end of the box body (1), and a transmission rod (20) is slidably arranged in the openings of the opening straight plate (19) and the opening inclined plate (18); A push-pull plate (21), the push-pull plate (21) is installed at the side end of the transmission rod (20), and the moving seat (9) is installed at the lower end of the push-pull plate (21).

6. The reliability evaluation device for a catalyst carrier according to claim 5, wherein, An avoidance opening (22) is formed at the upper end of the box body (1), and the push-pull plate (21) is slidably arranged in the avoidance opening (22).

7. The reliability evaluation device for a catalyst carrier according to claim 5, characterized in that, The two moving seats (9) respectively correspond to the placing rack (4) before rotation and the placing rack (4) after rotation.

8. The reliability evaluation device for a catalyst carrier according to claim 1, characterized in that When the placing rack (4) is separated from the cutting knife (8), the catalyst carrier is in a complete state, and the air supply device (2) on one side corresponds to the catalyst carrier in the complete state.

9. The reliability evaluation device for a catalyst carrier according to claim 1, characterized in that When the placement rack (4) cooperates with the cutting knife (8), the catalyst carrier is in a damaged state, and the air supply device (2) on the other side corresponds to the damaged catalyst carrier.

10. A method for a reliability evaluation device using a catalyst carrier according to any one of claims 1-9, characterized in that, The method comprises the following steps: S1. Place the catalyst carriers to be evaluated and tested into the two material placement cavities (6) respectively; S2. Start the air supply device (2) and the heater on one side to act on the catalyst carrier in step S1, and monitor the mass change of the catalyst carrier in the complete state by the corresponding sensor (3) in the placement rack (4) to determine its decomposition temperature and weight loss situation; S3. Replace the new catalyst carrier to be tested, and drive the catalyst carrier in the placement rack (4) to rotate by the driving mechanism. The cutting knife (8) damages the catalyst carrier, and at the same time, the transmission mechanism drives the moving seat (9) to perform synchronous actions; S4. Start the air supply device (2) and the heater on the other side to act on the catalyst carrier in step S3, so that the sensor (3) in the placement rack (4) can detect the mass change of the damaged catalyst carrier, and determine the decomposition temperature and weight loss situation again.

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