Stainless steel connecting pipe for emission test of lightweight automobile

Abstract

The utility model discloses a stainless steel connecting pipe for the emission test of a lightweight car, which comprises an emission mechanism, a connecting mechanism and an antiskid mechanism, the emission mechanism comprises a pipe body, a first emission groove is arranged in the pipe body, one end of the pipe body is fixedly connected with an expansion cylinder, a second emission groove is arranged in the expansion cylinder, and the expansion cylinder is fixedly connected with the connecting mechanism. The other end of the pipe body is fixedly connected with a conical pipe, and a third discharging groove is formed in the conical pipe. According to the stainless steel connecting pipe for the emission test of the light-duty car, the emission mechanism is arranged, and the port of the expanding cylinder at the left side end is connected with a pipeline of tail gas collecting and analyzing equipment by utilizing the connecting mechanism, so that the pipe body, the expanding cylinder and the conical pipe in the stainless steel connecting pipe for the emission test of the light-duty car are all made of stainless steel; normal connection of the automobile exhaust pipe and the tail gas collecting and analyzing equipment can be guaranteed, particulate matter cannot be generated in a high-temperature environment, the problem that particulate matter is generated in the connecting pipe in the high-temperature environment can be solved, and the accuracy of an automobile emission test is improved.

Description

Technical Field

[0001] The utility model relates to the field of light vehicle emission testing, in particular to a stainless steel connecting pipe for light vehicle emission testing. Background Art

[0002] Automobile emission testing refers to the measurement and evaluation of automobile exhaust emissions under specific conditions to ensure that its emissions comply with relevant environmental regulations and standards; the main purpose of such tests is to evaluate the pollutants emitted by vehicles in actual use in order to reduce pollution to the environment and the impact on human health.

[0003] Light vehicles use chassis dynamometers in emission test laboratories. During the emission test, the end of the vehicle's exhaust pipe needs to be connected to the exhaust gas collection and analysis equipment. However, the silicone tubes currently used produce particulate matter in high-temperature environments, which will cause inaccurate particulate matter results measured in the emission test and affect the accuracy of the test results. Therefore, if the problem of particulate matter generated by the connecting tube in a high-temperature environment can be solved, the accuracy of the emission test results can be improved. Utility Model Content

[0004] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a stainless steel connecting pipe for emission testing of light vehicles.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stainless steel connecting pipe for emission testing of light automobiles, comprising an emission mechanism, a connecting mechanism and an anti-skid mechanism, the emission mechanism comprising a pipe body, a first emission groove is provided inside the pipe body, an expansion tube is fixedly connected to one end of the pipe body, a second emission groove is provided inside the expansion tube, a conical tube is fixedly connected to the other end of the pipe body, a third emission groove is provided inside the conical tube, the connecting mechanism is arranged outside the expansion tube, the anti-skid mechanism is arranged outside the conical tube, the second emission groove in the expansion tube and the third emission groove in the conical tube are gradually expanded, so that the exhaust gas can be better discharged, two bolts are provided, which are respectively arranged on both sides of the quick-release clamp, the conical tube can be directly connected to the automobile exhaust pipe through an interference fit, and the rubber ring is in contact with the inner wall of the automobile exhaust pipe.

[0006] Preferably, the first discharge slot, the second discharge slot and the third discharge slot are interconnected, the tube body is cylindrical in shape, the connecting pipe is connected to the automobile via a tapered tube, and is connected to the exhaust gas collection and analysis equipment via an expansion tube.

[0007] Preferably, the connecting ring is arranged on one side of the expansion tube and fixedly connected to the expansion tube, and two quick-release clamps are provided. The two quick-release clamps are butt-jointed by bolts, and the quick-release clamps are butt-jointed up and down. The expansion tube can be connected to the exhaust gas collection and analysis equipment through the setting of the quick-release clamps and bolts.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0009] 1. The utility model sets up the emission mechanism, and the expansion tube at the left end uses the connection mechanism to connect the port with the pipeline of the exhaust gas collection and analysis equipment. The pipe body, expansion tube and tapered tube in the stainless steel connecting pipe for light automobile emission test of the utility model are all made of stainless steel, which can ensure the normal connection between the automobile exhaust pipe and the exhaust gas collection and analysis equipment, and will not generate particulate matter in a high temperature environment. It can solve the problem of particulate matter generated by the connecting pipe in a high temperature environment and improve the accuracy of the automobile emission test.

[0010] 2. The utility model clamps the quick-release clamp on the outside of the clamp ring through the setting of the connecting mechanism, and one side of the quick-release clamp is clamped on the outside of the connecting ring, and the other side of the quick-release clamp is clamped on the outside of the pipeline of the exhaust gas collection and analysis equipment. Then, the nut on the bolt is unscrewed to allow the bolt to pass through the two quick-release clamps, and then the nut is screwed on and tightened. The port is connected to the pipeline of the exhaust gas collection and analysis equipment through the quick-release clamp, so that the exhaust gas emitted by the car can make the stainless steel connecting pipe more firmly connected to the pipeline of the exhaust gas collection and analysis equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the first formal section of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the second formal cross-section of the utility model.

[0015] In the figure: 1, pipe body; 2, first discharge groove; 3, expansion tube; 4, second discharge groove; 5, tapered pipe; 6, third discharge groove; 7, connecting ring; 8, clamping ring; 9, quick-release clamp; 10, bolt; 11, rubber ring. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-3 A stainless steel connecting pipe for emission testing of light vehicles, comprising an emission mechanism, a connecting mechanism and an anti-skid mechanism, the emission mechanism comprising a pipe body 1, a first emission groove 2 is provided inside the pipe body 1, an expansion tube 3 is fixedly connected to one end of the pipe body 1, a second emission groove 4 is provided inside the expansion tube 3, a tapered tube 5 is fixedly connected to the other end of the pipe body 1, a third emission groove 6 is provided inside the tapered tube 5, the first emission groove 2, the second emission groove 4 and the third emission groove 6 are connected, the pipe body 1 is cylindrical in shape, the pipe body 1, the expansion tube 3 and the tapered tube 5 are all made of stainless steel, the expansion tube 3 and the tapered tube 5 are all tapered in shape, the non The conical tube 5 arranged at the right end of the stainless steel connecting pipeline has a certain taper, and can be directly connected to the automobile exhaust pipe through an interference fit relationship, thereby ensuring the sealing. The expansion tube 3 at the left end uses a connecting mechanism to connect the port to the pipeline of the exhaust gas collection and analysis equipment. The pipe body 1, expansion tube 3 and conical tube 5 in the stainless steel connecting pipe for light automobile emission testing of the utility model are all made of stainless steel, which can ensure the normal connection between the automobile exhaust pipe and the exhaust gas collection and analysis equipment. At the same time, no particulate matter will be generated in a high temperature environment, which can solve the problem of particulate matter generated in the connecting pipe under high temperature environment and improve the accuracy of automobile emission tests.

[0018] In one aspect of the present embodiment, the connection mechanism includes a connection ring 7, one side of the connection ring 7 is fixedly connected to a clamp ring 8, the outer clamp of the clamp ring 8 is provided with a quick-release clamp 9, the inside of the quick-release clamp 9 is provided with a bolt 10, the connection ring 7 is arranged on one side of the expansion tube 3 and is fixedly connected to the expansion tube 3, two quick-release clamps 9 are provided, and the two quick-release clamps 9 are butt-connected by bolts 10, the clamp ring 8 is fixedly connected to the expansion tube 3 through the connection ring 7, and when it is necessary to connect the expansion tube 3 to the pipeline of the exhaust gas collection and analysis equipment, firstly, the quick release clamp 9 is connected to the expansion tube 3. The mounting clamp 9 is stuck on the outside of the clamp ring 8, one side of the quick-release clamp 9 is stuck on the outside of the connecting ring 7, and the other side of the quick-release clamp 9 is stuck on the outside of the pipeline of the exhaust gas collection and analysis equipment. Then, the nut on the bolt 10 is unscrewed, so that the bolt 10 passes through the two quick-release clamps 9, and then the nut is screwed on and tightened. The port is connected to the pipeline of the exhaust gas collection and analysis equipment through the quick-release clamp 9, so that the exhaust gas emitted by the car can be transported to the pipeline of the exhaust gas collection and analysis equipment through the pipeline to detect, analyze and process the exhaust gas.

[0019] In one aspect of the present embodiment, the anti-slip mechanism includes a rubber ring 11, which is arranged on the outside of the tapered tube 5 and fixedly connected to the tapered tube 5. The tapered tube 5 has a certain taper and can be directly connected to the exhaust pipe of the automobile through an interference fit. When the tapered tube 5 is inserted into the exhaust pipe of the automobile, the rubber ring 11 will contact the inner wall of the exhaust pipe of the automobile. The rubber material has the effect of increasing friction, so that the tapered tube 5 connected to the exhaust pipe of the automobile through an interference fit is more stably and not easy to fall off.

[0020] The working principle of the utility model is as follows: when the stainless steel connecting pipe for light automobile emission test is used, firstly, the quick-release clamp 9 is clamped on the outside of the clamp ring 8, one side of the quick-release clamp 9 is clamped on the outside of the connecting ring 7, and the other side of the quick-release clamp 9 is clamped on the outside of the pipeline of the exhaust gas collection and analysis equipment, and then the nut on the bolt 10 is unscrewed, so that the bolt 10 passes through the two quick-release clamps 9, and then the nut is screwed on and tightened, and the port is connected to the pipeline of the exhaust gas collection and analysis equipment through the quick-release clamp 9. The conical tube 5 has a certain taper and can be directly connected to the automobile exhaust pipe through the interference fit relationship. When the conical tube 5 is clamped in the automobile exhaust pipe, the rubber The rubber ring 11 will contact the inner wall of the automobile exhaust pipe. The rubber material has the function of increasing friction, so that the tapered tube 5 is more stably connected to the automobile exhaust pipe through an interference fit. After the automobile is started, the exhaust gas of the automobile will enter the exhaust gas and collection and analysis equipment through the pipe for collection and analysis of the exhaust gas. The pipe body 1, the expansion tube 3 and the tapered tube 5 in the stainless steel connecting pipe for light automobile emission testing are all made of stainless steel, which can ensure the normal connection between the automobile exhaust pipe and the exhaust gas collection and analysis equipment. At the same time, no particulate matter will be generated in a high temperature environment. This can solve the problem of particulate matter generated in the connecting pipe under high temperature environment and improve the accuracy of automobile emission testing.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A stainless steel connecting pipe for light vehicle emission testing, comprising an emission mechanism, a connecting mechanism and an anti-slip mechanism, characterized in that: The discharge mechanism comprises a tube body (1), a first discharge groove (2) is provided inside the tube body (1), one end of the tube body (1) is fixedly connected to a expansion tube (3), a second discharge groove (4) is provided inside the expansion tube (3), the other end of the tube body (1) is fixedly connected to a conical tube (5), a third discharge groove (6) is provided inside the conical tube (5), the tube body (1), the expansion tube (3) and the conical tube (5) are all made of stainless steel, the expansion tube (3) and the conical tube (5) are both conical in shape, the connection mechanism comprises a connection ring (7), one side of the connection ring (7) is fixedly connected to a clamping ring (8), a quick-release clamp (9) is provided outside the clamping ring (8), a bolt (10) is provided inside the quick-release clamp (9), and the anti-slip mechanism comprises a rubber ring (11), the rubber ring (11) is provided outside the conical tube (5) and is fixedly connected to the conical tube (5).

2. A stainless steel connecting pipe for light vehicle emission testing according to claim 1, characterized in that: The first discharge groove (2), the second discharge groove (4) and the third discharge groove (6) are connected, and the shape of the tube body (1) is cylindrical.

3. The stainless steel connecting pipe for light vehicle emission testing according to claim 1, characterized in that: The connecting ring (7) is arranged on one side of the expansion tube (3) and is fixedly connected to the expansion tube (3). Two quick-release clamps (9) are provided, and the two quick-release clamps (9) are butt-jointed by bolts (10).

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