Tail pipe heating device for low-temperature emission test

Abstract

The utility model discloses a heating tail pipe device for a low-temperature emission test, which belongs to the technical field of heating tail pipes and comprises a pipe body, a heating wire, a thermocouple, a PVC (polyvinyl chloride) shell, a flange plate quick interface and a power supply. A layer of heating wire wraps the outer side of the pipe body, a thermocouple is arranged on the heating wire, the thermocouple is connected with a power source, a layer of PVC shell wraps the outer side of the heating wire, a flange plate quick connector is welded to one end of the pipe body, the power source is fixed in a control panel, and an equipment power-on switch, an equipment starting switch and a temperature displayer are further arranged on the control panel. A layer of flame retardant material is arranged between the PVC shell and the heating wire, and a layer of heat preservation cotton is arranged between the PVC shell and the heating wire. A plurality of groups of universal wheel brackets are arranged on the pipe body, and the fixing frame is clamped on the pipe body; according to the utility model, different tail pipes can be conveniently and quickly switched during different tests, and the automatic constant temperature device is adopted, so that the accuracy of the test in the test process is ensured, and visual operation is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating tail pipes, in particular to a heating tail pipe device used for low-temperature emission tests. Background Art

[0002] As the level of automobile technology continues to improve, automobile users' understanding of automobiles continues to deepen, and users' requirements for automobile quality are getting higher and higher, and they are paying more and more attention to emissions and fuel consumption. As a quality certification test in the automobile development stage, the accuracy of the vehicle emission and fuel consumption test is particularly important. Motor vehicle exhaust emission detection is an important task of environmental protection. The purpose is to ensure that motor vehicle exhaust emissions meet national environmental protection standards and reduce pollution to the environment. In the existing technology, when the whole vehicle is doing low-temperature emissions, the temperature in the compartment is low and the exhaust temperature is high during the test. When entering the analyzer, the water vapor in the tail pipe forms frost, which affects the accuracy of the emission and fuel consumption test. Utility Model Content

[0003] In view of the above problems, the utility model provides a heating tail pipe device for low-temperature emission testing, including a pipe body, a heating wire, a thermocouple, a PVC shell, a flange quick interface and a power supply; the outer side of the pipe body is coated with a layer of heating wire, the heating wire is provided with a thermocouple, the thermocouple is connected to the power supply, the outer side of the heating wire is coated with a layer of PVC shell, a flange quick interface is welded at one end of the pipe body, the power supply is fixed in the control panel, the control panel is also provided with an equipment power switch, an equipment start switch and a temperature display, a layer of flame retardant material is provided between the PVC shell and the heating wire, and a layer of thermal insulation cotton is provided between the PVC shell and the heating wire. The pipe body is provided with a plurality of sets of universal wheel brackets, and the fixing frame is clamped on the pipe body. The utility model adopts modular assembly, which is convenient for installation and maintenance. It adopts 220V power supply to ensure the accuracy of emissions and fuel consumption during low-temperature tests. A flange that can be quickly connected to the collection port of the emission analyzer is designed at the tail end of the tail pipe, which is convenient for fast switching of different tail pipes when doing different tests. An automatic constant temperature device is adopted to ensure the accuracy of the test during the test, and a liquid crystal display is used to display the real-time temperature of the equipment, which is convenient for intuitive operation. At the same time, a special key is used to control the start of the equipment to ensure safety.

[0004] The technical solution of the utility model is as follows: a heating tail pipe device for low temperature emission test, comprising: a pipe body, a heating wire, a thermocouple, a PVC shell, a flange quick interface and a power supply;

[0005] The outer side of the pipe body is coated with a heating wire, a thermocouple is arranged on the heating wire, the thermocouple is connected to a power supply, the outer side of the heating wire is coated with a PVC shell, and a flange quick interface is welded at one end of the pipe body.

[0006] Furthermore, it also includes a control panel, the power supply is fixed in the control panel, and the control panel is also provided with a device power-on switch, a device start switch and a temperature display.

[0007] Furthermore, it also includes flame retardant material, and a layer of flame retardant material is provided between the PVC shell and the heating wire.

[0008] Furthermore, it also includes thermal insulation cotton, and a layer of thermal insulation cotton is arranged between the PVC shell and the heating wire.

[0009] Furthermore, it also includes a universal wheel bracket, and a plurality of sets of universal wheel brackets are arranged on the tube body.

[0010] Furthermore, it also includes a fixing clamp, and the fixing frame can be clamped on the pipe body.

[0011] The beneficial effects of the utility model are:

[0012] The utility model adopts modular assembly, which is convenient for installation and maintenance. It adopts 220V power supply to ensure the accuracy of emissions and fuel consumption during low-temperature tests. A flange that can be quickly connected to the collection port of an emission analyzer is designed at the tail end of the tail pipe, which is convenient for quickly switching different tail pipes when doing different tests. An automatic constant temperature device is adopted to ensure the accuracy of the test during the test, and a liquid crystal display is used to display the real-time temperature of the equipment, which is convenient for intuitive operation. At the same time, a special key is used to control the start of the equipment to ensure safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the device of the utility model.

[0014] Figure 2 It is a schematic cross-sectional view of the device of the utility model.

[0015] Figure 3 This is a schematic diagram of a control panel of the utility model.

[0016] In the figure:

[0017] 1 tube body, 2 heating wire, 3 thermocouple, 4 flame retardant material, 5 thermal insulation cotton, 6 PVC shell, 7 flange quick interface, 8 universal wheel bracket, 9 power supply, 10 equipment power switch, 11 control panel, 12 equipment start switch, 13 temperature display, 14 fixing clamp. DETAILED DESCRIPTION

[0018] It should be noted that in the description of the present invention, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise", "counterclockwise", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction.

[0019] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connection", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral connection; the connection can be a mechanical connection or an electrical connection; the connection can be a direct connection or an indirect connection through an intermediate medium, and can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] This equipment adopts modular assembly, which is easy to install and maintain. It uses 220V power supply to ensure that the tail pipe will not form frost inside due to high-temperature exhaust gas during the test, which will affect the test results. At the same time, multiple universal wheels are designed at the bottom of the heated tail pipe to facilitate movement during low-temperature emission tests. An automatic constant temperature device is used to ensure the accuracy of the test during the test, and a liquid crystal display is used to display the real-time temperature of the equipment for intuitive operation. A special key is used to control the start of the equipment to ensure safety.

[0021] A heating tail pipe device for low temperature emission test, comprising: a pipe body 1, a heating wire 2, a thermocouple 3, a flame retardant material 4, a heat insulation cotton 5, a PVC shell 6, a flange quick interface 7, a universal wheel bracket 8, a 220V power supply 9, a device power switch 10, a control panel 11, a device start switch 12, a temperature display 13 and a fixing clamp 14,

[0022] All accessories of this equipment are composed of a heating tail pipe. First, the pipe body 1 is coated with an integrated structure of a heating wire 2 and a thermocouple 3 to realize the integration of heating and temperature measurement functions. A layer of flame retardant material 4 is coated to prevent the heating wire 2 from continuously heating and causing a fire when a thermocouple fails. During the experiment, the temperature in the warehouse is low, and a layer of thermal insulation cotton 5 is coated to keep the temperature insulated. Finally, it is coated with a PVC shell 6 to extend the service life. A fixing clip 14 is provided to facilitate fixing the connection. The inner wall of the flange quick interface 7 and the outer wall of the pipe body 1 are circumferentially welded to achieve sealing. The 220V power supply 9 is connected to the equipment power switch 10 to power on the equipment. The equipment start switch 12 is started, and the heating tail pipe is set to about 23 degrees with the control panel 11. This can ensure that the high-temperature exhaust gas during the experiment will not condense into frost in the pipe. The temperature display 13 is observed in real time to see if it is within the setting range to avoid damage to the equipment caused by overheating. At the same time, multiple universal wheel brackets 8 are designed at the bottom of the heating tail pipe to facilitate movement during low-temperature emission tests.

[0023] In a low temperature environment, water vapor in the exhaust gas may condense into ice, affecting the accuracy of the test results. Heating the tail pipe can prevent water vapor condensation and reduce test errors.

[0024] The temperature page is an electronic display screen that displays the temperature of the tail pipe in real time, making it easy for personnel to observe and operate;

[0025] Thermocouples are set in the heating area of ​​the heating wire to directly measure the internal temperature of the heating area of ​​the heating tube. It is convenient to control the temperature and not easy to overheat. It is usually made of high temperature resistant materials to ensure reliability and long life during the heating process.

[0026] In a low temperature environment, harmful substances in the exhaust gas may accumulate in the tail pipe, posing a safety hazard. Heating the tail pipe can fully volatilize the harmful substances and improve the safety of the experiment.

[0027] When the gas temperature is low, the acidic substances in the tail gas may corrode the experimental equipment. Heating the tail pipe can increase the tail gas temperature, reduce the corrosion of the acidic substances on the equipment, and extend the service life of the equipment.

[0028] The heated tail pipe device can make the exhaust gas emission smoother, thereby shortening the experimental time, improving the experimental efficiency and facilitating the operation of the experimenters.

[0029] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any modification, equivalent replacement and improvement made by any technician familiar with the technical field within the technical scope disclosed by the utility model and within the spirit and principle of the utility model shall be covered by the protection scope of the utility model. At the same time, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A tail pipe heating device for low temperature emission test, characterized in that: include: Tube body, heating wire, thermocouple, PVC shell, flange quick connector and power supply; The outer side of the pipe body is coated with a heating wire, a thermocouple is arranged on the heating wire, the thermocouple is connected to a power supply, the outer side of the heating wire is coated with a PVC shell, and a flange quick interface is welded at one end of the pipe body.

2. The tail pipe heating device for low temperature emission test according to claim 1, characterized in that: The utility model also comprises a control panel, a power source is fixed in the control panel, and a device power-on switch, a device start switch and a temperature display are also arranged on the control panel.

3. The tail pipe heating device for low temperature emission test according to claim 1, characterized in that: It also includes flame retardant material, and a layer of flame retardant material is arranged between the PVC shell and the heating wire.

4. The tail pipe heating device for low temperature emission test according to claim 3, characterized in that: It also includes thermal insulation cotton, and a layer of thermal insulation cotton is arranged between the PVC shell and the heating wire.

5. A tail pipe heating device for low temperature emission test according to any one of claims 1 to 4, characterized in that: It also includes a universal wheel bracket, and a plurality of sets of universal wheel brackets are arranged on the tube body.

6. The tail pipe heating device for low temperature emission test according to claim 5, characterized in that: Also included is a fixing clip, and the fixing frame can be clamped on the pipe body.

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