An exhaust transient pressure sensor filter device

Abstract

The utility model discloses an exhaust transient pressure sensor filter device, which belongs to the technical field of engine performance testing, and includes a connector, which is a tubular structure with open ends, an inner wall surface of the connector is provided with an internal thread, and an outer wall surface of the connector is provided with an external thread; one end of the connector is connected to an angle flange, and the other end is provided with a filter. The utility model is a filter device installed on an exhaust transient pressure sensor, which has a simple structure and is easy to install. It can effectively prevent particulate matter in the engine exhaust from clogging the sensor probe, avoid repeated cleaning of the exhaust transient pressure sensor, and will not damage the exhaust transient pressure sensor.

Description

Technical Field

[0001] The utility model belongs to the technical field of engine performance testing, in particular to an exhaust transient pressure sensor filtering device. Background Art

[0002] At present, in the process of engine thermodynamic development experiment, it is necessary to dynamically monitor and collect data of exhaust transient pressure. During the experiment, the front-end probe of the existing exhaust transient pressure sensor is often blocked by particulate matter in the engine exhaust, resulting in inaccurate data measurement. When the blockage is serious, no data can be measured. The blocked exhaust transient pressure sensor needs to be cleaned with a special cleaning agent. Frequent and repeated cleaning can easily damage the sensor and affect the sensor accuracy. It is necessary to design a device to solve the problem of easy blockage of the front-end probe of the exhaust transient pressure sensor. Utility Model Content

[0003] The purpose of the utility model is to provide an exhaust transient pressure sensor filtering device to solve at least one aspect of the problems and defects raised in the above-mentioned background technology.

[0004] An exhaust transient pressure sensor filter device includes a connector, wherein the connector is a tubular structure with both ends open, an inner wall surface of the connector is provided with an internal thread, and an outer wall surface of the connector is provided with an external thread;

[0005] One end of the connector is connected with an angle flange, and the other end is provided with a filter screen.

[0006] Furthermore, the filter screen is configured to be dome-shaped, the bottom surface of the dome is connected to the end surface of the connector, and the outer diameter of the bottom surface of the dome is smaller than the major diameter of the external thread and not smaller than the minor diameter of the external thread.

[0007] Furthermore, the filter screen is made of metal.

[0008] Furthermore, the corner flange is a polygonal structure, an interface hole is opened at the center of the corner flange, and the diameter of the interface hole is larger than the minor diameter of the internal thread.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The connector in this solution adopts a tubular structure with open ends. A filter is provided at one end of the connector and an angle flange is provided at the other end. The front end probe of the exhaust transient pressure sensor enters the connector from the angle flange. The internal thread of the connector is meshed and sealed with the thread of the pressure sensor until the end face of the front end of the probe is flush with the end face of the connector. Then, the end of the connector with the filter is extended into the transient pressure collection port on the exhaust pipe. The angle flange is turned to make the external thread of the connector mesh and the thread of the transient pressure collection port on the exhaust pipe mesh and seal. When the exhaust pipe sprays exhaust gas, the particles in the exhaust gas will be blocked by the filter to avoid affecting the sensor probe. This solution has a simple structure and is easy to disassemble and assemble. You only need to use a wrench to turn the angle flange to tighten the filter device on the exhaust pipe or remove it from the exhaust pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

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

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from another angle;

[0014] Figure 3 It is a front view cross-sectional structural schematic diagram of the utility model;

[0015] Figure 4 It is a schematic diagram of the structure of the utility model when viewed from above.

[0016] In the figure: 1. Connector; 2. Flush surface; 3. Filter screen; 4. Angle flange; 5. External thread; 6. Internal thread; 7. Interface hole. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-4 As shown, in an embodiment of the utility model, an exhaust transient pressure sensor filtering device includes a connector 1, which is a tubular structure with open ends. The inner wall surface of the connector 1 is provided with an internal thread 6, and the outer wall surface of the connector 1 is provided with an external thread 5. The inner diameter of the connector 1 should ensure that the front end probe of the exhaust transient pressure sensor can enter smoothly; one end of the connector 1 is provided with a flush plane 2, and the front end probe of the exhaust transient pressure sensor enters the interior of the connector 1 from the end away from the flush plane 2. After the front end probe of the exhaust transient pressure sensor extends into the internal space of the connector 1, it is necessary to ensure that the detection end of the front end probe of the exhaust transient pressure sensor is flush with the flush plane 2. Such installation can avoid affecting the sensor measurement and will not cause errors.

[0020] In one embodiment, see Figure 3 As shown, a filter screen 3 is provided at one end of the connector 1, and the filter screen 3 is provided at the end where the flush plane 2 is located. The filter screen 3 is set to a dome-shaped structure, and the bottom surface of the dome is connected to the end surface of the connector 1. The outer diameter of the bottom surface of the dome is smaller than the major diameter of the external thread 5, and is not smaller than the minor diameter of the external thread 5. After the filter device is tightened on the exhaust pipe, the end where the filter screen 3 is located directly faces the exhaust gas, and the exhaust gas is sprayed from the filter screen 3 to the flush plane 2. The particles in the exhaust gas will be blocked by the filter screen 3 and cannot contact the flush plane 2, thereby not affecting the front end probe of the sensor flush with the flush plane 2. The dome-shaped structural design makes it difficult for the particles in the exhaust gas to adhere to the surface of the filter screen 3, thereby reducing the risk of clogging of the filter screen 3 and extending the service life of the filter screen 3.

[0021] It should be noted that the filter screen 3 is made of metal, so that the filter screen 3 can stably maintain a dome-shaped structure. The dome-shaped structure of the metal material can enhance the structural strength and pressure resistance of the filter screen 3, thereby improving the stability and durability of the filtering equipment.

[0022] In one embodiment, see Figure 2 As shown, the other end of the connector 1 is provided with an angle flange 4, and an interface hole 7 is opened in the center of the angle flange 4. The diameter of the interface hole 7 is larger than the minor diameter of the internal thread 6, and the contact position of the interface hole 7 and the connector 1 is set in a step shape, so that the front end probe of the sensor can smoothly enter the connector 1 through the interface hole 7; the end where the filter 3 is located is inserted into the exhaust pipe, and the external thread 5 of the connector 1 is engaged with the transient pressure collection port thread on the exhaust pipe by rotating the angle flange 4. The angle flange 4 is a polygonal structure and can be easily twisted using a wrench.

[0023] In one embodiment, see Figure 3As shown, the internal thread 6 on the connector 1 is engaged with the thread of the exhaust transient pressure sensor. After the exhaust transient pressure sensor enters the connector 1 from the end where the angle flange 4 is located, the exhaust transient pressure sensor is screwed into the flush plane 2. After the front end probe of the exhaust transient pressure sensor is flush with the flush plane 2, the connector 1 is connected to the exhaust pipe.

[0024] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. An exhaust transient pressure sensor filter device, characterized in that: It includes a connector, which is a tubular structure with open ends, an inner wall surface of the connector is provided with an internal thread, and an outer wall surface of the connector is provided with an external thread; One end of the connector is connected with an angle flange, and the other end is provided with a filter screen.

2. The exhaust transient pressure sensor filter device according to claim 1, characterized in that: The filter screen is arranged in a dome shape, the bottom surface of the dome shape is connected to the end surface of the connector, and the outer diameter of the bottom surface of the dome shape is smaller than the major diameter of the external thread and not smaller than the minor diameter of the external thread.

3. The exhaust transient pressure sensor filter device according to claim 1, characterized in that: The filter screen is made of metal.

4. The exhaust transient pressure sensor filter device according to claim 1, characterized in that: The angle flange is a polygonal structure, an interface hole is opened at the center of the angle flange, and the diameter of the interface hole is larger than the minor diameter of the internal thread.

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