Heat preservation pipeline for automobile exhaust detection

Abstract

The utility model discloses a heat preservation pipeline for automobile exhaust detection, and belongs to the technical field of automobiles. The problem that in the prior art, when automobile tail gas detection is carried out by an automobile production enterprise, the temperature of tail gas entering a tail gas detection instrument is obviously reduced is solved. The device mainly comprises thermal insulation pipes on the front side and the rear side, a rotating seat is arranged at the bottom of the thermal insulation pipe on the front side, a plurality of universal wheels are installed at the bottom of the rotating seat, a front hoop is installed at the top of the rotating seat, the front hoop comprises a front lower half hoop and a front upper half hoop, and the front lower half hoop and the front upper half hoop are fixed through bolts and nuts. The front thermal insulation pipe is arranged between the front upper half hoop and the front lower half hoop, the front thermal insulation pipe and the rear thermal insulation pipe are connected through a middle hose, the front end of the front thermal insulation pipe is connected with a front connecting pipe, and the rear end of the rear thermal insulation pipe is connected with a rear connecting pipe.

Description

Technical Field

[0001] This utility model belongs to the field of automotive technology, and more specifically, it relates to a heat-insulated pipe for automotive exhaust gas detection. Background Technology

[0002] Automobile manufacturers must conduct rigorous exhaust emission tests on vehicles leaving the factory in accordance with national emission standards. This is to ensure that newly produced cars meet environmental protection requirements, control vehicle exhaust emissions at the source, and reduce environmental pollution. The tests include the levels of pollutants such as carbon monoxide, hydrocarbons, nitrogen oxides, and particulate matter in vehicle exhaust. Only vehicles that pass the exhaust emission tests can be sold on the market.

[0003] When conducting emissions tests on vehicles, automakers connect the exhaust pipe to the vehicle's exhaust pipe via an exhaust gas pipeline, which then transmits the exhaust gases to the emissions testing instrument. Currently, the exhaust gas pipeline has poor heat insulation during the transmission of exhaust gases to the testing instrument, resulting in a significant drop in the temperature of the exhaust gases reaching the instrument and affecting the accuracy of the emissions tests. Summary of the Invention

[0004] The purpose of this invention is to provide a heat-insulated pipeline for automobile exhaust gas testing, so as to overcome the problem in the prior art that the temperature of the exhaust gas entering the exhaust gas testing instrument drops significantly when automobile manufacturers conduct automobile exhaust gas testing.

[0005] This utility model is achieved using the following technical solution: a heat-insulating pipe for automobile exhaust gas detection, comprising front and rear heat-insulating pipes. The bottom of the front heat-insulating pipe is provided with a rotating seat, and multiple casters are installed at the bottom of the rotating seat. A front clamp is installed on the top of the rotating seat. The front clamp includes a lower front clamp and a higher front clamp, which are fixed together by bolts and nuts. The front heat-insulating pipe is located between the upper front clamp and the lower front clamp. The front heat-insulating pipe and the rear heat-insulating pipe are connected by a flexible intermediate tube. The front end of the front heat-insulating pipe is connected to a front connecting pipe, and the rear end of the rear heat-insulating pipe is connected to a rear connecting pipe. The heat-insulating pipe includes a pipe body, around which an electric heating wire is wound. The electric heating wire is connected to a temperature controller, which is also connected to a temperature sensor. One end of the temperature sensor is inserted into the pipe body. The pipe body has an insulation layer on the outside of the electric heating wire.

[0006] Furthermore, the bottom of the rear insulation pipe is provided with a fixing seat, and the top of the fixing seat is equipped with a rear clamp. The rear clamp includes a lower rear clamp and an upper rear clamp, which are fixed together by bolts and nuts. The rear insulation pipe is located between the upper rear clamp and the lower rear clamp.

[0007] Furthermore, two rear clamps are installed on the rear insulation pipe.

[0008] Furthermore, a push rod is mounted on the top of the rotating seat.

[0009] Furthermore, flanges are installed at both ends of the pipe body.

[0010] Furthermore, the pipe body is made of stainless steel corrugated pipe.

[0011] Furthermore, the insulation layer is made of insulation felt, and the two ends of the insulation layer are connected by Velcro. The outer side of the insulation layer is also provided with straps, and the two ends of the straps are connected by buckles. The insulation layer is made of silica insulation felt.

[0012] Furthermore, baffles are provided on both sides of the tube, and the insulation felt is located between the two baffles.

[0013] Furthermore, the front connecting pipe is a flexible pipe.

[0014] Furthermore, the intermediate hose is made of stainless steel.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model provides a front and rear heat insulation pipe, which can heat and insulate the vehicle exhaust gas passing through it, so that the temperature of the vehicle exhaust gas entering the exhaust gas detection instrument is within a certain range.

[0017] 2. This utility model allows for easy movement of the front insulation pipe by setting a rotating seat on the lower side of the front insulation pipe. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the heat insulation pipe described in this utility model.

[0020] In the diagram: 1. Insulation pipe; 2. Rotating seat; 3. Casters; 4. Front lower half clamp; 5. Front upper half clamp; 6. Fixed seat; 7. Rear lower half clamp; 8. Rear upper half clamp; 9. Intermediate flexible hose; 10. Front connecting pipe; 11. Rear connecting pipe; 12. Push rod; 13. Pipe body; 14. Baffle; 15. Temperature controller; 16. Insulation layer; 17. Flange; 18. Velcro; 19. Strap; 20. Buckle. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort should fall within the scope of protection of this utility model.

[0022] A heat-insulated pipe for automobile exhaust gas testing includes front and rear heat-insulated pipes 1. The front end of the front heat-insulated pipe 1 is connected to a front connecting pipe 10, and the rear end of the rear heat-insulated pipe 1 is connected to a rear connecting pipe 11. In this invention, the front connecting pipe 10 can be a flexible pipe. By making the front connecting pipe 10 a flexible pipe, it can be bent, thereby facilitating the connection of the front connecting pipe 10 to the exhaust pipe of the automobile. The rear connecting pipe 11 is connected to the automobile testing instrument.

[0023] The front insulation pipe 1 and the rear insulation pipe 1 are connected by an intermediate flexible hose 9. The intermediate flexible hose 9 is made of stainless steel and can have an insulation layer installed on its outer side. The insulation layer can be made of a flexible insulation felt to avoid affecting the bending of the intermediate flexible hose 9. The front insulation pipe 1 can rotate relative to the rear insulation pipe 1 through the intermediate flexible hose 9. When the car is parked at the exhaust gas detection position, rotating the front insulation pipe 1 can move it to the rear of the vehicle, thereby bringing the front connecting pipe 10 closer to the car's exhaust pipe.

[0024] The bottom of the front insulation pipe 1 is provided with a rotating seat 2, and multiple casters 3 are installed at the bottom of the rotating seat 2. A front clamp is installed on the top of the rotating seat 2. The front clamp includes a front lower clamp 4 and a front upper clamp 5. The front lower clamp 4 and the front upper clamp 5 are fixed together by bolts and nuts. The front insulation pipe 1 is located between the front upper clamp 5 and the front lower clamp 4.

[0025] This invention uses a front clamp to mount the front insulation pipe 1 onto the rotating seat 2. When we need to rotate the front insulation pipe 1, we only need to push the rotating seat 2. To facilitate the pushing of the rotating seat 2, a push rod 12 is installed on the top of the rotating seat 2. During use, we can push the rotating seat 2 to move it using the push rod 12. Four casters 3 can be installed at the bottom of the rotating seat 2.

[0026] The bottom of the rear insulation pipe 1 is provided with a fixing seat 6, and the top of the fixing seat 6 is equipped with a rear clamp. The rear clamp includes a lower rear clamp 7 and an upper rear clamp 8, which are fixed together by bolts and nuts. The rear insulation pipe 1 is located between the upper rear clamp 8 and the lower rear clamp 7, and two rear clamps are installed on the rear insulation pipe 1. The rear insulation pipe 1 of this utility model is fixedly installed on the ground by the two rear clamps.

[0027] The insulation pipe 1 includes a pipe body 13, with an electric heating wire wound around the outside of the pipe body 13. The electric heating wire is connected to a temperature controller 15, which is also connected to a temperature sensor. One end of the temperature sensor is inserted into the pipe body 13. An insulation layer 16 is provided on the outside of the electric heating wire in the pipe body 13. This invention heats the pipe body 13 using the electric heating wire, while the temperature sensor detects the temperature inside the pipe body 13. The temperature controller 15 adjusts the heating power of the electric heating wire based on the temperature detected by the temperature sensor to maintain a constant temperature inside the pipe body 13 of the insulation pipe 1.

[0028] Flanges 17 are installed at both ends of the pipe body 13. In this utility model, the front insulation pipe 1 is connected to the intermediate hose 9 and the front connecting pipe 10 through the flanges 17, and the rear insulation pipe 1 is connected to the intermediate hose 9 and the rear connecting pipe 11 through the flanges 17.

[0029] The pipe body 13 is made of stainless steel corrugated pipe.

[0030] The insulation layer 16 is made of insulation felt, and its two ends are connected by Velcro 18. A strap 19 is also provided on the outer side of the insulation layer 16, and the two ends of the strap 19 are connected by buckles 20. The insulation layer 16 is made of silica insulation felt. Baffles 14 are provided on both sides of the tube body 13, and the insulation felt is located between the two baffles 14.

Claims

1. A heat-insulated pipeline for automobile exhaust emission testing, characterized in that, The system includes front and rear insulation pipes (1). A rotating seat (2) is located at the bottom of the front insulation pipe (1). Multiple casters (3) are installed at the bottom of the rotating seat (2). A front clamp is installed at the top of the rotating seat (2). The front clamp includes a lower front clamp (4) and an upper front clamp (5). The lower front clamp (4) and the upper front clamp (5) are fixed together by bolts and nuts. The front insulation pipe (1) is located between the upper front clamp (5) and the lower front clamp (4). The front insulation pipe (1) and the rear insulation pipe (1) The two sides are connected by a middle hose (9). The front end of the front insulation pipe (1) is connected to the front connecting pipe (10), and the rear end of the rear insulation pipe (1) is connected to the rear connecting pipe (11). The insulation pipe (1) includes a pipe body (13), and an electric heating wire is wound around the outside of the pipe body (13). The electric heating wire is connected to a temperature controller (15). The temperature controller (15) is also connected to a temperature sensor. One end of the temperature sensor is inserted into the pipe body (13). The pipe body (13) has an insulation layer (16) on the outside of the electric heating wire.

2. The insulated pipeline for automobile exhaust gas detection according to claim 1, characterized in that, The bottom of the rear insulation pipe (1) is provided with a fixing seat (6), and the top of the fixing seat (6) is equipped with a rear clamp. The rear clamp includes a rear lower clamp (7) and a rear upper clamp (8). The rear upper clamp (8) and the rear lower clamp (7) are fixed together by bolts and nuts. The rear insulation pipe (1) is located between the rear upper clamp (8) and the rear lower clamp (7).

3. The insulated pipeline for automobile exhaust gas detection according to claim 2, characterized in that, Two rear clamps are installed on the insulation pipe (1) on the rear side.

4. The insulated pipeline for automobile exhaust gas detection according to claim 1, characterized in that, A push rod (12) is mounted on the top of the rotating seat (2).

5. The insulated pipeline for automobile exhaust gas detection according to claim 1, characterized in that, Flanges (17) are installed at both ends of the pipe body (13).

6. The insulated pipeline for automobile exhaust gas detection according to claim 1, characterized in that, The pipe body (13) is made of stainless steel corrugated pipe.

7. The insulated pipeline for automobile exhaust gas detection according to claim 1, characterized in that, The insulation layer (16) is made of insulation felt. The two ends of the insulation layer (16) are connected by Velcro (18). The outer side of the insulation layer (16) is also provided with a strap (19). The two ends of the strap (19) are connected by buckles (20). The insulation layer (16) is made of silica insulation felt.

8. The insulated pipeline for automobile exhaust gas detection according to claim 7, characterized in that, The tube (13) is provided with baffles (14) on both sides, and the heat insulation felt is between the two baffles (14).

9. The insulated pipeline for automobile exhaust gas detection according to claim 1, characterized in that, The front connecting pipe (10) is a flexible pipe.

10. The insulated pipeline for automobile exhaust gas detection according to claim 1, characterized in that, The intermediate hose (9) is made of stainless steel.

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