Gas circulating device for testing performance of gas sensitive sensor

Abstract

The utility model discloses a gas circulation device for testing the performance of a gas sensitive sensor, which comprises a test box, and a first gas storage cavity and a second gas storage cavity are arranged in the test box. According to the utility model, through the cooperative arrangement of the fixing assembly and the extrusion assembly, a second electric push rod is utilized to drive a sealing plate to move upwards, so that gas in a first gas storage cavity is extruded into a second gas storage cavity, the sealing plate is moved to the upper part of a through groove, and a gas sensitive sensor can be conveniently replaced and tested; the problem that part of gas drifts out of the device and easily pollutes the environment is solved, and convenience is brought to testing of the gas sensitive sensor; and the fixing assembly can be used for conveniently fixing the gas-sensitive sensor and blocking the through groove, so that the sealing performance of the test box is further improved, and the problem of test gas leakage is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas sensor performance testing device, especially relates to a gas circulating device for gas sensor performance testing. BACKGROUND

[0002] The gas sensor is used for detecting the gas concentration and component, and it plays an important role in environmental protection and safety supervision, and the gas sensor is used in various components of gas, and after the production of the gas sensor is completed, the sensor is tested by using the gas sensor testing device, so that the gas detection function of the gas sensor can be realized.

[0003] During the testing of the gas sensor, the detection end of the gas sensor testing needs to be in contact with the detection gas, and when the gas sensor is replaced to test the next gas sensor, part of the gas is easy to drift out of the device, thereby polluting the environment and bringing inconvenience to the testing of the gas sensor.

[0004] Therefore, it is necessary to provide a gas circulating device for gas sensor performance testing to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model discloses a gas circulating device for gas sensor performance testing, which solves the problem of the gas sensor testing in the background art, that is, the detection end of the gas sensor testing needs to be in contact with the detection gas, and when the gas sensor is replaced to test the next gas sensor, part of the gas is easy to drift out of the device, thereby polluting the environment and bringing inconvenience to the testing of the gas sensor.

[0006] To achieve the above object, the utility model provides the following technical scheme: a gas circulating device for gas sensor performance testing, comprising a test box, a first gas storage cavity and a second gas storage cavity are arranged in the test box, a partition plate is fixedly connected to the bottom of the test box, a through slot is formed in the side of the test box, and a testing machine is fixedly connected to the side of the test box.

[0007] The side of the test box is provided with a fixing assembly, the fixing assembly comprises a supporting plate, a first electric push rod and a fixed plate, the side of the supporting plate is fixedly connected with the side of the test box, the side of the supporting plate is fixedly connected with the outside of the first electric push rod, the telescopic end of the first electric push rod is fixedly connected with the side of the fixed plate, and the top of the supporting plate is placed with a circuit mounting plate.

[0008] The bottom of the test box is provided with a pressing assembly, the pressing assembly comprises a second electric push rod, a sealing plate and a rubber sealing ring, the outer part of the second electric push rod is fixedly connected with the bottom of the test box, and the telescopic end of the second electric push rod is fixedly connected with the bottom of the sealing plate, and the sealing plate is clamped with the rubber sealing ring.

[0009] Preferably, the side of the test box is fixedly connected with a rubber sealing frame, and the rubber sealing frame is located at the side of the through groove.

[0010] Preferably, the number of the pressing assembly is two groups, and the two groups of pressing assemblies are respectively located in the interiors of the first gas storage cavity and the second gas storage cavity.

[0011] Preferably, the test machine and the circuit mounting plate are electrically connected through wires.

[0012] Preferably, the top of the test box is fixedly connected with a connecting pipe, and the outer part of the connecting pipe is fixedly installed with a valve.

[0013] Preferably, the bottom of the test box is fixedly connected with four supporting legs, and the length values of the four supporting legs are all greater than the length value of the second electric push rod.

[0014] The gas sensitive sensor performance test gas circulating device has the advantages that:

[0015] The fixed assembly and the pressing assembly are matched, when the gas sensitive sensor is tested, the second electric push rod drives the sealing plate to move upwards, so that the gas in the first gas storage cavity is pressed into the interior of the second gas storage cavity, the sealing plate moves above the through groove, the gas sensitive sensor is conveniently replaced and tested, the problem that part of the gas is scattered outside the device and pollutes the environment is avoided, and the gas sensitive sensor is conveniently tested; the fixed assembly can be used to conveniently fix the gas sensitive sensor and block the through groove, the sealing performance of the test box is further improved, and the problem of test gas leakage is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the gas sensitive sensor performance test gas circulating device.

[0017] Figure 2 It is an internal structure schematic view of the test box.

[0018] Figure 3 It is a side view of the test box.

[0019] Figure 4 It is a structural schematic view of the second electric push rod.

[0020] In the figure: 1, test box; 2, first gas storage cavity; 3, second gas storage cavity; 4, partition plate; 5, through slot; 6, testing machine; 7, circuit mounting plate; 8, gas sensitive sensor body; 9, support plate; 10, first electric push rod; 11, fixed plate; 12, rubber sealing frame; 13, second electric push rod; 14, sealing plate; 15, rubber sealing ring; 16, connecting pipe; 17, valve. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] As Figures 1-4 shown, the utility model provides a kind of gas sensitive sensor performance test gas circulation device, including test box 1, the inside of test box 1 is provided with first gas storage cavity 2 and second gas storage cavity 3, and the bottom of test box 1 inner cavity is fixedly connected with partition plate 4, and the side of test box 1 is provided with through slot 5, and the side of test box 1 is fixedly connected with testing machine 6, the top of test box 1 is fixedly connected with connecting pipe 16, and the outside of connecting pipe 16 is fixedly installed with valve 17, and the bottom of test box 1 is fixedly connected with four support legs, and the length value of four support legs is greater than the length value of second electric push rod 13. Test gas can be filled into the inside of test box 1 by connecting pipe 16, and test box 1 can be placed by support leg.

[0023] In addition, the side of test box 1 is provided with fixed assembly, and fixed assembly includes support plate 9, first electric push rod 10 and fixed plate 11, the side of support plate 9 is fixedly connected with the side of test box 1, and the side of support plate 9 is fixedly connected with the outside of first electric push rod 10, and the telescopic end of first electric push rod 10 is fixedly connected with the side of fixed plate 11, and the top of support plate 9 is placed with circuit mounting plate 7, and the side of circuit mounting plate 7 is fixedly installed with gas sensitive sensor body 8, and the side of test box 1 is fixedly connected with rubber sealing frame 12, and rubber sealing frame 12 is located in the side of through slot 5, and testing machine 6 and circuit mounting plate 7 are electrically connected by wire. When gas sensitive sensor body 8 is inserted into the inside of through slot 5, first electric push rod 10 can be opened, first electric push rod 10 will drive fixed plate 11 to move, fixed plate 11 will drive circuit mounting plate 7 to move, so that circuit mounting plate 7 extrudes rubber sealing frame 12, that is, circuit mounting plate 7 can be quickly fixed or disassembled, and test gas can also be prevented from leaking from the connection between circuit mounting plate 7 and rubber sealing frame 12.

[0024] Finally, the bottom of the test box 1 is provided with a pressing assembly, the pressing assembly comprises a second electric push rod 13, a sealing plate 14 and a rubber sealing ring 15, the outer part of the second electric push rod 13 is fixedly connected with the bottom of the test box 1, and the telescopic end of the second electric push rod 13 is fixedly connected with the bottom of the sealing plate 14, the sealing plate 14 is clamped between the rubber sealing ring 15, the number of the pressing assembly is two groups, and the two groups of pressing assemblies are respectively located in the interiors of the first gas storage cavity 2 and the second gas storage cavity 3. When the second electric push rod 13 is opened, the second electric push rod 13 will drive the sealing plate 14 to move upwards or downwards, so as to facilitate the test gas to be discharged from the first gas storage cavity 2 into the second gas storage cavity 3, or the test gas to be discharged from the second gas storage cavity 3 into the first gas storage cavity 2, so as to facilitate the disassembly of the gas sensitive sensor body 8, avoid the problem of gas leakage, and thus bring convenience for the use of the device.

[0025] Working principle: first, when the connecting pipe 16 is used to fill the test gas into the interior of the test box 1, the height of the sealing plate 14 of the second gas storage cavity 3 is higher than the height of the through groove 5, when the gas sensitive sensor body 8 needs to be disassembled and replaced, two second electric push rods 13 can be opened, so that the sealing plate 14 located in the first gas storage cavity 2 moves upwards, and the sealing plate 14 located in the second gas storage cavity 3 moves downwards, so that the gas in the first gas storage cavity 2 is extruded into the interior of the second gas storage cavity 3, and the sealing plate 14 of the first gas storage cavity 2 moves above the through groove 5, so as to facilitate the replacement and testing of the gas sensitive sensor body 8, avoid the problem that part of the gas is scattered outside the device and easily pollutes the environment, when the new gas sensitive sensor body 8 is inserted into the interior of the through groove 5, the first electric push rod 10 can be opened, the first electric push rod 10 will drive the fixed plate 11 to move, the fixed plate 11 will drive the circuit mounting plate 7 to move, so that the circuit mounting plate 7 extrudes the rubber sealing frame 12, which can quickly fix or disassemble the circuit mounting plate 7, and also can avoid the leakage of the test gas from the connection between the circuit mounting plate 7 and the rubber sealing frame 12, and similarly, two second electric push rods 13 can be opened again, so that the gas in the second gas storage cavity 3 is extruded into the interior of the first gas storage cavity 2, and the new gas sensitive sensor body 8 is tested, and the test result can be viewed by using the testing machine 6.

Claims

1. A gas circulating device for performance test of a gas sensitive sensor, characterized by: Including test box (1), the inside of test box (1) is provided with a gas storage chamber (2) and a gas storage chamber (2) and the bottom of test box (1) is fixedly connected with the partition plate (4), the side of test box (1) is provided with the through slot (5), and the side of test box (1) is fixedly connected with test machine (6);The side of test box (1) is provided with fixing assembly, the fixing assembly includes support plate (9), a motor-driven push rod (10) and fixed plate (11), the side of support plate (9) is fixedly connected with the side of test box (1), and the side of support plate (9) is fixedly connected with the outside of a motor-driven push rod (10), the telescopic end of a motor-driven push rod (10) is fixedly connected with the side of fixed plate (11), the top of support plate (9) is placed with circuit mounting plate (7), the side of circuit mounting plate (7) is fixedly installed with gas sensor body (8); The bottom of test box (1) is provided with extrusion assembly, the extrusion assembly includes a second motor-driven push rod (13), a sealing plate (14) and a rubber sealing ring (15), the outside of a second motor-driven push rod (13) is fixedly connected with the bottom of test box (1), and the telescopic end of a second motor-driven push rod (13) is fixedly connected with the bottom of sealing plate (14), the sealing plate (14) is clamped between the rubber sealing ring (15).

2. The gas circulating device for performance testing of gas-sensitive sensors according to claim 1, characterized in that: The side of test box (1) is fixedly connected with rubber sealing frame (12), and the rubber sealing frame (12) is located on the side of through slot (5).

3. The gas circulating device for performance testing of gas sensors according to claim 1, characterized in that: The number of extrusion assembly is two groups, and two groups of extrusion assembly are located in the inside of a gas storage chamber (2) and a gas storage chamber (3) respectively.

4. The gas circulating device for testing performance of a gas-sensitive sensor according to claim 1, wherein: The test machine (6) and circuit mounting plate (7) are electrically connected through wires.

5. The gas circulating device for testing the performance of a gas-sensitive sensor according to claim 1, characterized by: The top of test box (1) is fixedly connected with connecting pipe (16), and the outside of connecting pipe (16) is fixedly installed with valve (17).

6. The gas circulating device for testing performance of a gas-sensitive sensor according to claim 1, wherein: The bottom of test box (1) is fixedly connected with four supporting legs, and the length values of four supporting legs are all greater than the length value of a second motor-driven push rod (13).

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