Fixing and sealing device for temperature and humidity sensor of air inlet pressure stabilizing cavity for single-cylinder engine test
By designing a fixed sealing device for single-cylinder engine testing, the problem of temperature and humidity sensor fixing and sealing is solved, and the stability of intake pressure and the accuracy of temperature and humidity detection is achieved.
Patent Information
- Application Number
- CN202421851537.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-01
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-08-01
AI Technical Summary
In the single-cylinder engine test, it is difficult for the prior art to effectively fix and seal the temperature and humidity sensor, resulting in poor in intake pressure stability and temperature and humidity detection.
A fixed sealing device including a cavity, a first mounting hole, a first pressing hole, a second pressing hole, a second pressing hole, a third mounting hole and a sealing ring is designed. By cooperating these holes and pressing holes, the temperature and humidity sensor probes are fixed and sealed.
The device realizes stable fixation and sealing of the temperature and humidity sensor, ensures the stability of the intake pressure, and improves the accuracy and reliability of temperature and humidity detection.
Smart Images
Figure CN222825082U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of engine experiments, in particular to a fixing and sealing device for a temperature and humidity sensor of an intake pressure stabilizing chamber used for testing a single-cylinder engine. Background Art
[0002] During the current single-cylinder engine test developed by thermodynamics, it is necessary to install a pressure stabilizing chamber on the engine intake pipe to stabilize the engine's intake pressure and reduce intake pressure fluctuations. At the same time, it is also necessary to install a temperature and humidity sensor on the pressure stabilizing chamber to detect the temperature and humidity of the gas entering the engine. Because the temperature and humidity of the intake air are one of the key factors affecting engine performance, a set of devices that can install temperature and humidity sensors on the intake pressure stabilizing chamber and fix and seal it is necessary to design. Utility Model Content
[0003] The purpose of the utility model is to provide a fixing and sealing device for an intake pressure stabilizing chamber temperature and humidity sensor for testing a single-cylinder engine, so as to solve at least one aspect of the problems and defects raised in the above-mentioned background technology.
[0004] A device for fixing and sealing a temperature and humidity sensor of an intake pressure stabilizing chamber for testing a single-cylinder engine comprises a cavity, a first mounting hole communicating with the inside and outside of the cavity is formed on a side wall of the cavity, a first pressing block with a second mounting hole formed on an outer wall of the cavity is fixedly mounted, the second mounting hole corresponds to the first mounting hole, a second pressing block is fixed to a side of the first pressing block away from the cavity, a third mounting hole is formed on the second pressing block, the third mounting hole corresponds to the second mounting hole, a sealing ring is sandwiched between the first pressing block and the second pressing block, and the centers of the first mounting hole, the second mounting hole, the third mounting hole and the sealing ring are collinear.
[0005] Furthermore, the inner diameter of the sealing ring is smaller than the apertures of the first mounting hole, the second mounting hole, and the third mounting hole, and the outer diameter of the sealing ring is larger than the apertures of the first mounting hole, the second mounting hole, and the third mounting hole.
[0006] Furthermore, a surface of the first pressing block in contact with the cavity is configured to be arc-shaped, and the arc matches the outer wall of the cavity.
[0007] Furthermore, the cavity is provided with an air inlet at one end and an air outlet at the other end.
[0008] Compared with the prior art, the beneficial effects of the utility model are:
[0009] In this scheme, a first mounting hole is opened on the outer wall of the temperature and pressure chamber to connect the inside and outside of the chamber, a first pressure block is installed at the first mounting hole position, a second pressure block is installed on the first pressure block, a sealing ring is sandwiched between the first pressure block and the second pressure block, and the temperature and humidity sensor probe passes through the first pressure block, the sealing ring, and the second pressure block into the temperature and pressure chamber to detect the temperature and humidity in the chamber. This design has a simple structure, is easy to process and install, and has a good sealing effect, which is stable and reliable. In the single-cylinder engine test, the intake air temperature and humidity can be measured while ensuring the stability of the intake pressure. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.
[0011] Figure 1 This is a schematic diagram of the exploded structure of the utility model;
[0012] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model.
[0013] In the figure: 1, cavity; 101, air inlet; 102, air outlet; 103, first mounting hole; 2, first pressure block; 201, second mounting hole; 202, threaded fixing hole; 203, contact surface; 3, second pressure block; 301, third mounting hole; 302, positioning through hole; 4, sealing ring. DETAILED DESCRIPTION
[0014] 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.
[0015] 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.
[0016] See also Figure 1-2As shown, in an embodiment of the utility model, a fixing and sealing device for a temperature and humidity sensor of an intake stabilizing chamber for testing a single-cylinder engine comprises a chamber 1, a first mounting hole 103 communicating with the inside and outside of the chamber 1 is opened on the side wall of the chamber 1, a first pressing block 2 is welded on the outer wall of the chamber 1, a second mounting hole 201 is opened on the first pressing block 2, and the second mounting hole 201 corresponds to the first mounting hole 103, a side of the first pressing block 2 that is in contact with the chamber 1 is a contact surface 203, and the contact surface 203 is designed to be arc-shaped, and the arc matches the outer wall of the chamber 1, so as to better weld and maintain air tightness; a second pressing block 3 is provided on a side of the first pressing block 2 away from the chamber 1, a sealing ring 4 is sandwiched between the first pressing block 2 and the second pressing block 3, a third mounting hole 301 is opened on the second pressing block 3, and the third mounting hole 301 corresponds to the second mounting hole 201, and the centers of the first mounting hole 103, the second mounting hole 201, the sealing ring 4, and the third mounting hole 301 are collinear and connected to each other. The temperature and humidity sensor probe passes through the third mounting hole 301, the sealing ring 4, the second mounting hole 201, and the first mounting hole 103 in sequence, and probes into the cavity 1 to detect the temperature and humidity.
[0017] It should be noted that the outer diameter of the sealing ring 4 is larger than the apertures of the first mounting hole 103, the second mounting hole 201, and the third mounting hole 301, and the inner diameter of the sealing ring 4 is smaller than the apertures of the first mounting hole 103, the second mounting hole 201, and the third mounting hole 301, and is smaller than the diameter of the temperature and humidity sensor probe, so that the diameter of the temperature and humidity sensor probe can maintain good airtightness when it penetrates into the cavity 1 to detect temperature and humidity.
[0018] The second pressing block 3 is provided with a positioning through hole 302, and the first pressing block 2 is provided with a threaded fixing hole 202 matching the positioning through hole 302. The threaded rod passes through the positioning through hole 302 and is screwed into the threaded fixing hole 202, thereby fixing the second pressing block 3 on the first pressing block 2. The second pressing block 3 can be removed from the first pressing block 2 by simply unscrewing the threaded rod, thereby replacing the sealing ring 4 between the first pressing block 2 and the second pressing block 3, and the disassembly and assembly are simple and convenient.
[0019] The cavity 1 is provided with an air inlet 101 at one end and an air outlet 102 at the other end. The air in the engine air intake line enters the cavity 1 through the air inlet 101 and is discharged from the air outlet 102 .
[0020] 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. A fixing and sealing device for a temperature and humidity sensor of an intake pressure stabilizing chamber for a single-cylinder engine test, characterized in that: It includes a cavity, a first mounting hole connecting the inside and outside of the cavity is opened on the side wall of the cavity, a first pressing block with a second mounting hole is fixedly installed on the outer wall of the cavity, the second mounting hole corresponds to the first mounting hole, a second pressing block is fixed on the side of the first pressing block away from the cavity, a third mounting hole is opened on the second pressing block, the third mounting hole corresponds to the second mounting hole, a sealing ring is sandwiched between the first pressing block and the second pressing block, and the centers of the first mounting hole, the second mounting hole, the third mounting hole and the sealing ring are collinear.
2. The fixing and sealing device for the temperature and humidity sensor of the intake pressure stabilizing chamber for testing a single-cylinder engine according to claim 1 is characterized in that: The inner diameter of the sealing ring is smaller than the apertures of the first mounting hole, the second mounting hole and the third mounting hole, and the outer diameter of the sealing ring is larger than the apertures of the first mounting hole, the second mounting hole and the third mounting hole.
3. The fixing and sealing device for the temperature and humidity sensor of the intake pressure stabilizing chamber for testing a single-cylinder engine according to claim 1 is characterized in that: A surface of the first pressing block in contact with the cavity is set to be arc-shaped, and the arc matches the outer wall of the cavity.
4. The fixing and sealing device for the temperature and humidity sensor of the intake stabilizing chamber for testing a single-cylinder engine according to claim 1 is characterized in that: An air inlet is arranged at one end of the cavity, and an air outlet is arranged at the other end.