CN211741213U

CN211741213U - Quick detection tool for tail gas of motor vehicle

Info

Publication number: CN211741213U
Application number: CN202020154528.5U
Authority: CN
Inventors: 李殿娟; 罗志华
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-06
Filing date: 2020-02-06
Publication date: 2020-10-23
Anticipated expiration: 2030-02-06

Abstract

The utility model belongs to the field of motor vehicle environmental protection detection devices, in particular to a motor vehicle exhaust rapid detection tool, which comprises a collecting pipe and a fixing clamp structure, and further comprises an air heater, wherein the collecting pipe structure comprises a pipe A and a pipe B, the outer side of the pipe A and the outer side of the pipe B are connected through a pin shaft, a torsional spring is arranged at the pin shaft, an antiskid block is respectively fixed on the pipe A and the pipe B, under the natural state, the two antiskid blocks always keep the motion trend of being close to each other under the elastic action of the torsional spring, and the two antiskid blocks respectively support the inner side and the outer side of an automobile exhaust pipe; the tube A is a double-layer tube consisting of an inner tube and an outer tube. The utility model adopts the hot air heat tracing mode to carry out thawing heat tracing, the hot air surrounds the tail gas channel to be thawed in all directions, and the thawing speed is faster; in addition, the collecting pipe of the utility model is not provided with cables and electric elements, so the collecting pipe has stronger impact resistance and abrasion resistance and longer service life.

Description

Quick detection tool for tail gas of motor vehicle

Technical Field

The utility model belongs to motor vehicle environmental protection detection device field especially relates to a motor vehicle tail gas short-term test instrument.

Background

Exhaust gas detection is an important part of motor vehicle detection work. When detecting the exhaust, it is necessary to use an exhaust detection tool to collect the exhaust. The core structure of tail gas detection instrument's structure includes collecting pipe and fixation clamp, and after the collecting pipe inserted the blast pipe, tail gas got into the collecting pipe and reachd the tail gas analysis appearance under the guide of collecting pipe, finally realizes the detection of tail gas, fixes the collecting pipe on automobile exhaust pipe during the effect of fixation clamp, prevents that the collecting pipe breaks away from the blast pipe in the course of the work. At present, when tail gas detection is carried out in cold weather in northern China, water vapor in automobile tail gas can be condensed in a tail gas detection tool, and finally a collecting pipe is frozen and blocked and cannot be used. In order to solve the problem, the prior art adopts an electric tracing mode to heat the collecting pipe, but the mode has obvious defects: 1. the heat tracing is not uniform, and the thawing time is long; 2. after long-time use, the heat tracing cable is easy to damage, the service life is short, and potential safety hazards of electric leakage exist. Therefore, it is necessary to develop a new exhaust gas detection tool to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a motor vehicle tail gas short-term test instrument to solve the problem that proposes in the above-mentioned background art.

The utility model provides a technical problem adopt following technical scheme to realize: the utility model provides a low pressure direct current accompanies frostproofing stifled motor vehicle exhaust detection device of heat, including collecting pipe and fixation clamp structure, still include the air heater, the structure of collecting pipe includes pipe A and pipe B, the outside of pipe A and the outside of pipe B are connected through a round pin axle and the round pin axle department is provided with the torsional spring, be fixed with an antiskid ribbed tile respectively on pipe A and the pipe B, under the natural state, two antiskid ribbed tiles remain the motion trend of being close to each other all the time under the elasticity of torsional spring, two antiskid ribbed tiles support respectively the inside and outside both sides of vehicle vent-pipe to fix pipe A and pipe B on vehicle vent-pipe;

the pipe A is a double-layer pipe consisting of an inner pipe and an outer pipe, wherein a channel on the inner side of the inner pipe is called a tail gas channel, a channel between the inner pipe and the outer pipe is called a heat tracing channel, one end of the tail gas channel is communicated with the pipe B through a corrugated pipe, the other end of the tail gas channel is communicated with a tail gas analyzer through a hose, one end of the heat tracing channel is provided with an air outlet, and the other end of the heat tracing channel is connected with the air heater through a hose.

The pipe A is sleeved with a handle. The anti-skid blocks are made of rubber.

The utility model has the advantages that:

1. the utility model adopts the hot air heat tracing mode to carry out thawing heat tracing, the hot air surrounds the tail gas channel to be thawed in all directions, and the thawing speed is faster; in addition, the collecting pipe of the utility model is not provided with cables and electric elements, so the collecting pipe has stronger impact resistance and abrasion resistance and longer service life.

2. The utility model discloses structurally combine fixation clamp and collecting pipe together, not only simplified the structure, make the fixation clamp more firm moreover, even frequent use every day is difficult also to damage.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of the retaining clip at A in FIG. 1;

FIG. 3 is a schematic view of the configuration of the plugged end of tube A;

FIG. 4 is a schematic view of one cross-sectional shape of tube A;

fig. 5 is a schematic view of another cross-sectional shape of tube a.

In the figure, 1-tube B, 2-tube A, 3-handle, 4-hose, 5-antiskid block, 6-corrugated tube, 7-pin shaft, 8-air outlet, 9-inner tube, 10-outer tube, 11-heat tracing channel, 12-tail gas channel, and 13-bending part.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

this embodiment includes a collection tube and retaining clip arrangement, which is a structure that is already present in the prior art and is not described in detail herein.

The utility model discloses a still include the air heater, adopt the bilayer pipe structure with the most (being pipe A2) of collecting pipe simultaneously. Specifically, the method comprises the following steps:

the collecting pipe structure comprises a pipe A2 and a pipe B1, the outer side of the pipe A2 and the outer side of the pipe B1 are connected through a pin 7, a torsion spring (not shown in the figure) is arranged at the position of the pin 7, and the pipe A2 and the pipe B1 are connected through the pin 7 to form a clamp structure. The anti-slip blocks 5 are fixed on the pipe A2 and the pipe B1 respectively, in a natural state, the two anti-slip blocks 5 always keep a mutually close movement trend under the action of the elastic force of the torsion spring, and the two anti-slip blocks 5 are respectively abutted against the inner side and the outer side of the automobile exhaust pipe, so that the pipe A2 and the pipe B1 are fixed on the automobile exhaust pipe. Through the structure, the utility model discloses combine fixation clamp and collecting pipe together, not only simplified the structure, make the fixation clamp more firm moreover, even frequent use every day is difficult also to damage. In use, tube B1 is inserted into an automobile exhaust pipe so that the wall of the pipe is between the two cleats 5.

In particular, a 180 ° bend 13 may be provided in tube a2 near one end of tube B1 to secure the engagement of tube a2 and tube B1 while forming a retaining clip structure.

In addition, it should be noted that the torsion spring is a basic structure on most clips, and the installation position and the installation mode thereof belong to common technical means, and are not described herein again.

The pipe A2 is a double-layer pipe composed of an inner pipe 9 and an outer pipe 10, wherein a channel on the inner side of the inner pipe 9 is called a tail gas channel 12, a channel between the inner pipe 9 and the outer pipe 10 is called a heat tracing channel 11, one end of the tail gas channel 12 is communicated with a pipe B1 through a corrugated pipe 6, the other end of the tail gas channel is communicated with a tail gas analyzer through a hose 4, one end of the heat tracing channel 11 is provided with an air outlet 8 (the air outlet 8 is processed on the outer pipe 10), and the other end of the heat tracing channel is connected with the hot air blower through the hose. In operation, hot air generated by the hot air blower enters the interlayer (i.e. the heat tracing channel 11) of the pipe A2 through the hose 4 and is discharged from the air outlet 8 at the other end of the pipe A2.

The utility model adopts the hot air heat tracing mode to carry out thawing heat tracing, the hot air surrounds the tail gas channel 12 to be thawed in all directions, and the thawing speed is faster; in addition, the collecting pipe of the utility model is not provided with cables and electric elements, so the collecting pipe has stronger impact resistance and abrasion resistance and longer service life.

The pipe A2 is sleeved with a handle 3, so that the pipe A2 is convenient to hold by hand for operation.

The anti-skid block 5 is made of rubber, and the rubber is selected from rubber with high temperature resistance.

In specific implementation, the inner tube 9 may be made of metal (such as copper, aluminum, steel, etc.) to ensure a higher heat transfer efficiency. In addition, the outer pipe can adopt the material with poor heat conductivity, such as engineering plastics.

In addition, the cross-sectional shape of the tube a2 may be circular for ease of manufacture, or rectangular for improved heat exchange area between the inside and outside of the inner tube 9 for further shorter thawing time.

Claims

1. A motor vehicle exhaust rapid detection tool comprises a collecting pipe and a fixing clamp structure, and further comprises an air heater, wherein the collecting pipe structure comprises a pipe A (2) and a pipe B (1), the outer side of the pipe A (2) and the outer side of the pipe B (1) are connected through a pin shaft (7), a torsion spring is arranged at the pin shaft (7), an anti-slip block (5) is respectively fixed on the pipe A (2) and the pipe B (1), the two anti-slip blocks (5) are always kept to be close to each other under the elastic action of the torsion spring in a natural state, and the two anti-slip blocks (5) are respectively abutted against the inner side and the outer side of an automobile exhaust pipe, so that the pipe A (2) and the pipe B (1) are fixed on the automobile exhaust pipe;

the pipe A (2) is a double-layer pipe consisting of an inner pipe (9) and an outer pipe (10), wherein a channel on the inner side of the inner pipe (9) is called a tail gas channel (12), a channel between the inner pipe (9) and the outer pipe (10) is called a heat tracing channel (11), one end of the tail gas channel (12) is communicated with the pipe B (1) through a corrugated pipe (6), the other end of the tail gas channel is communicated with a tail gas analyzer through a hose (4), one end of the heat tracing channel (11) is provided with an air outlet (8), and the other end of the heat tracing channel is connected with the air heater through the hose (4).

2. The tool for rapidly detecting the exhaust gas of the motor vehicle according to claim 1, wherein: the pipe A (2) is sleeved with a handle (3).

3. The tool for rapidly detecting the exhaust gas of the motor vehicle according to claim 1, wherein: the anti-skid block (5) is made of rubber.