CN220188476U

CN220188476U - Tail gas analyzer

Info

Publication number: CN220188476U
Application number: CN202321510214.4U
Authority: CN
Inventors: 王宏刚; 徐梦琦; 姜思毅
Original assignee: Shanghai Jiaming Motor Vehicle Testing Co ltd
Current assignee: Shanghai Jiaming Motor Vehicle Testing Co ltd
Priority date: 2023-06-14
Filing date: 2023-06-14
Publication date: 2023-12-15
Anticipated expiration: 2033-06-14

Abstract

The utility model discloses a tail gas analyzer, comprising: the shell is provided with an air inlet, an air outlet and an interface module from top to bottom in sequence at the rear part; the inside gas condenser of shell, filter, vacuum pump and sensor subassembly pass through the hose connection in proper order, and hose junction is provided with the sealing member, and sensor subassembly is fixed in the shell bottom through supporting module. The utility model is provided with a plurality of groups of sensor components, and can test the contents of various gases such as carbon monoxide, carbon dioxide, hydrocarbon, nitrogen oxide and the like in the tail gas according to requirements; the sensor assembly is fixed on the supporting plate, so that the sensor assembly can be quickly and conveniently disassembled and overhauled; the sealing element between the hoses can ensure the air tightness of the pipeline and improve the precision of instrument testing.

Description

Tail gas analyzer

Technical Field

The utility model relates to the technical field of automobile exhaust detection, in particular to an exhaust analyzer.

Background

Automobile exhaust is exhaust gas produced during automobile use and contains hundreds of different compounds. Automobile exhaust is one of the main sources of PM2.5 and is also one of the main muzzles of many urban air pollution. The automobile exhaust analyzer is an instrument for detecting and analyzing the exhaust gas emitted by an automobile when the automobile engine normally operates, so as to judge whether the automobile engine works normally or not and whether the harmful gas is discharged out of the standard or not, and is an effective tool for controlling the exhaust pollution of the automobile.

The current tester has miniaturized components required for detection, and the whole tester is quite large and equal to a case, so that the tester is convenient to move and detect. However, due to the miniaturization of the detection and analysis instrument, carbon and moisture remain in the pipeline during long-term use, and the air tightness of the pipeline and the accuracy of sensor test are also reduced, so that maintenance of the pipeline and recalibration of the sensor using standard gas are required.

Disclosure of Invention

The utility model aims at: in order to solve the problems, the utility model provides an exhaust gas analyzer.

The utility model adopts the following technical scheme for realizing the purposes, and comprises the following steps: the shell is provided with an air inlet, an air outlet and an interface module from top to bottom in sequence at the rear part;

the gas condenser, the filter and the sensor assembly are arranged inside the shell and are sequentially connected through hoses, and sealing elements are arranged at the joints of the hoses.

As a further description of the above technical solution, a vacuum pump is disposed between the filter and the sensor assembly, and the vacuum pump is a negative pressure pump.

As a further description of the above technical solution, two sides of the sensor assembly are respectively connected with the data processing module and the driving circuit module.

As a further description of the above solutions, the sensor assembly comprises three types of sensors for testing various gas components in the exhaust gas.

As a further description of the above solution, the sensor assembly is fixed inside the housing by means of a support module.

As a further description of the above technical solution, the support module includes a support plate, and a magnetic attraction buckle and a fixing slot are disposed on the support plate.

As a further description of the above technical solution, the sealing element comprises a first ferrule, which is connected with the reinforcing ring, the anti-slip ring and the second ferrule in sequence.

As further description of the technical scheme, the reinforcing ring and the anti-slip ring are made of rubber, and the number of turns of the anti-slip ring is 2-8.

As a further description of the above technical solution, the front portion of the housing is provided with a screen, and the upper portion of the housing is provided with a handle.

As a further description of the above technical solution, the bottom of the housing is provided with a supporting foot, and the bottom of the supporting foot is bonded with an anti-slip pad.

The beneficial effects of the utility model are as follows:

1. according to the utility model, the plurality of groups of sensor assemblies are arranged, so that the contents of various gases such as carbon monoxide, carbon dioxide, hydrocarbon, nitrogen oxides and the like in the tail gas can be tested according to requirements; the sensor assembly is fixed on the supporting plate, so that the sensor assembly can be quickly and conveniently disassembled and overhauled; the sealing element between the hoses can ensure the air tightness of the pipeline and improve the precision of instrument testing.

In order to more clearly illustrate the structural features and functions of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings and the embodiments.

Drawings

FIG. 1 is a schematic diagram of an exhaust gas analyzer according to the present utility model;

FIG. 2 is a front view of an exhaust gas analyzer of the present utility model;

fig. 3 is a schematic view of the seal of fig. 1.

Reference numerals: 1. a housing; 2. an air inlet; 3. an air outlet; 4. an interface module; 5. a gas condenser; 6. a filter; 7. a vacuum pump; 8. a sensor assembly; 9. a data processing module; 10. a driving circuit module; 11. a support module; 111. a support plate; 112. magnetic attraction buckles; 113. a fixing groove; 12. a hose; 13. a seal; 131. a first ferrule; 132. a reinforcing ring; 133. an anti-slip ring; 134. a second ferrule; 14. a screen; 15. a handle; 16. supporting feet; 161. an anti-slip mat.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

As shown in fig. 1 to 3, in one embodiment, an exhaust gas analyzer includes a housing 1, and an air inlet 2, an air outlet 3 and an interface module 4 are sequentially disposed at the rear of the housing 1 from top to bottom; the gas condenser 5, the filter 6 and the sensor assembly 8 are arranged in the shell 1, and the gas condenser 5, the filter 6 and the sensor assembly 8 are connected in sequence through a hose 12; the front part of the shell 1 is provided with a screen 14, the upper part of the shell 1 is provided with a handle 15, the bottom of the shell 1 is provided with a supporting foot 16, the bottom of the supporting foot 16 is adhered with an anti-slip pad 161, a vacuum pump 7 is arranged between the filter 6 and the sensor assembly 8, and the vacuum pump 7 is a negative pressure pump.

After the tester puts the instrument in place through the handle 15, the tester starts the instrument, and the tail gas enters the gas condenser 5 through the gas inlet 2 to cool down, then some solid particles are filtered through the filter 6, and the tail gas rapidly enters the sensor assembly 8 through the pipeline under the action of the vacuum pump 7.

The data processing module 9 and the drive circuit module 10 are connected respectively to sensor subassembly 8 both sides, and sensor subassembly 8 includes multiple type sensor, can test multiple gaseous composition, has test life-span length, measurement accuracy advantage such as high: a non-spectroscopic infrared absorption sensor (york SM series) which can be used for analyzing and testing the concentration of gases such as carbon monoxide, carbon dioxide, hydrocarbon and the like; an ultraviolet differential absorption spectrum gas sensor (GasBoard series is pointed out) which can be used for analyzing and testing the concentration of the oxynitride gas; an oxygen sensor (the foxsch series) may be used to analyze the concentration of the test oxygen. The sensor assembly 8 is fixed to the bottom of the housing 1 through a support module 11, the support module 11 includes a support plate 111, and a magnetic attraction buckle 112 and a fixing groove 113 are disposed on the support plate 111. The various sensors can be freely assembled and installed through the supporting plate 111 assembly according to the requirements; the design of the magnetic attraction buckle 112 and the fixing groove 113 can be used for rapidly and conveniently disassembling, assembling and overhauling the sensor.

The hose 12 junction is provided with sealing member 13, and sealing member 13 includes first cutting ferrule 131, and first cutting ferrule 131 connects gradually reinforcing ring 132, non-slip ring 133 and second cutting ferrule 134. The reinforcing ring 132 and the anti-slip ring 133 are made of rubber, and the number of turns of the anti-slip ring 133 is 2-8. By providing the reinforcing ring and the anti-slip ring 133 so that the portion of the inside of the sealing member 13 in contact with the hose 12 has good abrasion resistance and increases friction, it is possible to secure air tightness of the pipe and improve accuracy of the instrument test.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An exhaust gas analyzer, comprising: the device comprises a shell (1), wherein the rear part of the shell (1) is sequentially provided with an air inlet, an air outlet (3) and an interface module (4) from top to bottom; the gas condenser (5), the filter (6) and the sensor component (8) are arranged inside the shell (1), the gas condenser (5), the filter (6) and the sensor component (8) are connected through the hose (12) in sequence, and a sealing element (13) is arranged at the joint of the hose (12).

2. An exhaust gas analyser according to claim 1, wherein a vacuum pump (7) is arranged between the filter (6) and the sensor assembly (8), the vacuum pump (7) being a negative pressure pump.

3. An exhaust gas analyzer according to claim 1, wherein the sensor assembly (8) is connected to the data processing module (9) and the driving circuit module (10) on both sides thereof.

4. An exhaust gas analyser according to claim 3, wherein the sensor assembly (8) comprises three types of sensors, the sensor assembly (8) being adapted to test a plurality of gas components in the exhaust gas.

5. An exhaust gas analyser according to claim 1, wherein the sensor assembly (8) is fixed inside the housing (1) by means of a support module (11).

6. The exhaust gas analyzer according to claim 5, wherein the support module (11) comprises a support plate (111), and a magnetic attraction buckle (112) and a fixing groove (113) are arranged on the support plate (111).

7. An exhaust gas analyser according to claim 1, wherein the sealing member (13) comprises a first ferrule (131), the first ferrule (131) being in turn connected to a reinforcing ring (132), a non-slip ring (133) and a second ferrule (134).

8. The exhaust gas analyzer according to claim 7, wherein the reinforcing ring (132) and the anti-slip ring (133) are made of rubber, and the number of turns of the anti-slip ring (133) is 2-8.

9. An exhaust gas analyser according to claim 1, wherein the front part of the housing (1) is provided with a screen (14) and the upper part of the housing (1) is provided with a handle (15).

10. The exhaust gas analyzer according to claim 1, wherein the bottom of the housing (1) is provided with a supporting foot (16), and an anti-slip pad (161) is adhered to the bottom of the supporting foot (16).