CN219284565U - Pressure sensor - Google Patents
Pressure sensor Download PDFInfo
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- CN219284565U CN219284565U CN202320798701.9U CN202320798701U CN219284565U CN 219284565 U CN219284565 U CN 219284565U CN 202320798701 U CN202320798701 U CN 202320798701U CN 219284565 U CN219284565 U CN 219284565U
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Abstract
The utility model discloses a pressure sensor, the sensor body includes: the base is hollow and is detachably connected with the pipe wall for conveying the medium to be tested. The main body is concave, is arranged on the base, is positioned on the upper surface of the base and fixedly connected with the upper surface, and the base is used for guiding the medium to be measured into the main body. The isolation detection assembly is arranged in the main body and is integrally connected with the inner bottom surface of the main body. The isolation detection assembly is integrally connected with the main body, and the side wall of the isolation detection assembly is separated from the inner wall of the main body, so that the pressure is detected independently. The pressure-guiding blind hole is designed to prevent the medium to be measured from meeting the sensitive detection element, so that the medium to be measured and the sensitive detection element are in a complete physical isolation state, the contact between the medium to be measured and the electric element is thoroughly stopped, the potential danger of leakage of the medium to be measured is reduced or stopped, even the potential ignition and detonation danger of the electric element to the medium is avoided, and the pressure-guiding blind hole has important practicability in the application field of hydrogen energy and hydrogen strict absolute seal monitoring detection.
Description
Technical Field
The utility model relates to the technical field of pressure detection components, in particular to a pressure sensor.
Background
The function of a pressure sensor is usually to convert measured non-electricity into electricity, and more precisely to convert a pressure signal into an electrical signal for the purpose of measuring pressure.
For sensing the pressure of the medium to be measured in the pipe wall, such as liquid, colloid, gas, sauce, sand, petroleum, oil sludge, slurry, starch, etc., a pressure sensor is also required to measure the pressure of the medium to be measured in the pipe wall, and in the prior art, the pressure sensor is generally used to measure the pressure of the medium to be measured in the pipe wall. In the process of installing the pressure sensor, the pressure sensor needs to be connected with a pipe wall flowing through a medium to be measured, in particular to a threaded or other connecting part of the pressure sensor, which is connected with the pipe wall through a mounting tool in a screwing, welding or flange clamping way. The pressure sensor can generate torque or other stress in the processes of tightening, welding or flange clamping and the like, at the moment, the pressure sensor can deform, the sensitive grids on the pressure sensor can be affected or damaged to different degrees, the sensitive grids can not accurately detect the pressure in the pipe wall, so that the performance of the pressure sensor is affected to a certain extent, the deviation between the sensed pressure and the actual pressure is larger, the problem of inaccurate pressure test occurs, the detection precision of the pressure sensor is affected, and the trouble is brought to the work of detecting the pipe wall pressure. Furthermore, some sensors employ plungers, which, once damaged, are extremely prone to risk of leakage of the medium through electrical parts and the like.
Therefore, when the existing pressure sensor is installed on the pipe wall, the connection part of the existing pressure sensor and the pipe wall is deformed by torque, welding or flange clamping and the like, so that the detection precision is affected and leaked, and finally the detection and the safe use of the pressure of the medium to be detected in the pipe wall are affected.
Disclosure of Invention
In order to solve the problems that the detection precision is affected and the risk of medium leakage is avoided due to the fact that the connection part of the pressure sensor and the pipe wall is deformed due to torque, welding or flange clamping and the like, the utility model provides the pressure sensor which is used for independently detecting the pressure of a medium to be detected through an isolation detection component.
In order to achieve the above purpose, the utility model is realized by the following technical scheme:
a pressure sensor for detecting a pressure of a medium to be measured inside thereof by a sensor body comprising:
the base is hollow and is detachably connected with the pipe wall for conveying the medium to be tested.
The main body is concave, is arranged on the base, is positioned on the upper surface of the base and fixedly connected with the upper surface, and the base is used for guiding the medium to be measured into the main body.
The isolation detection assembly is arranged in the main body, is integrally connected with the inner bottom surface of the main body and is used for being separated from the main body through the side wall of the isolation detection assembly so as to independently detect the pressure of the medium to be detected injected into the main body by the surge.
Compared with the prior art, the utility model has the following advantages:
the isolation detection component is integrally connected with the main body, so that the pressure of the medium to be detected, which is guided by the main body, is sensed, and meanwhile, the side wall of the isolation detection component is separated from the inner wall of the main body, so that the isolation detection component is isolated independently, and the pressure is detected independently. When the pressure sensor is installed on the pipe wall, the connection part of the pressure sensor and the pipe wall cannot deform due to the fact that the pressure sensor is subjected to welding, flange clamping or the like, the pressure sensor is prevented from being influenced by any external installation mode, the detection precision is prevented from being influenced, the normal detection precision of the sensor is ensured, and the pressure of a medium to be detected in the pipe wall can be normally detected in any installation mode. Moreover, the pressure-guiding blind hole is designed to prevent the medium to be measured from meeting with the sensitive detection element, so that the medium to be measured and the sensitive detection element are in a complete physical isolation state, the contact between the medium to be measured and the electric element is thoroughly stopped, the potential danger of leakage of the medium to be measured is effectively reduced or stopped, even the potential ignition and detonation danger of the electric element to the medium is effectively reduced or stopped, and the pressure-guiding blind hole has important practicability in the field of hydrogen energy and hydrogen strict absolute seal monitoring and detection application.
Further preferably, the isolation detection assembly includes:
the blind pipe boss is arranged in the main body, the bottom surface of the blind pipe boss is fixedly connected with the bottom surface inside the main body, and the blind pipe boss is used for sensing the pressure of a medium to be tested entering the blind pipe boss.
And the isolation force groove is formed between the main body and the blind pipe boss, one inner wall of the isolation force groove is integrally connected with the side wall of the blind pipe boss, and the other inner wall of the isolation force groove is integrally connected with the inner wall of the main body and is used for separating the blind pipe boss from the main body so as to independently blind pipe bosses.
By adopting the technical scheme, the isolation force groove is formed between the isolation step and the blind pipe boss, the blind pipe boss is separated from the main body through the isolation force groove and the isolation step, so that the blind pipe boss can independently sense the pressure of a medium to be detected, the influence of torque, welding or flange clamping and the like generated when the base is connected with the pipe wall is avoided, and the integral detection precision of the sensor is further ensured.
It is further preferable that a pressure guiding blind hole is formed in the base, the inner top surface of the pressure guiding blind hole is located in the blind pipe boss, and the pressure guiding blind hole is used for guiding the medium to be measured into the blind pipe boss.
By adopting the technical scheme, the medium to be detected and the sensitive detection element are in a complete physical isolation state, so that the contact between the medium to be detected and the electric element is thoroughly stopped, and the potential danger of leakage of the medium to be detected is effectively reduced or stopped.
Further preferably, the side wall of the main body is provided with a clamping area, and the clamping area is concave and distributed on the side wall of the main body.
By adopting the technical scheme, the base stretches into the pipe wall to deeper and deeper degree in the process of connecting the base and the pipe wall, the main body is screwed up by clamping the clamping area by the tool, the sensor is firmly installed on the pipe wall, and the sensing precision of the blind pipe boss cannot be influenced.
Further preferably, the blind pipe boss is provided with a sensitive grating, the sensitive grating is adhered to the surface of the blind pipe boss, and the blind pipe boss is used for transmitting the pressure of the medium to be tested to the sensitive grating so as to enable the sensitive grating to generate strain.
By adopting the technical scheme, the pressure of the medium to be detected in the first cavity is perceived independently through the strain generated by the sensing grid, so that the detection precision of the sensor is ensured not to be influenced by the outside.
Further preferably, the inner top surface of the pressure guiding blind hole is any one of a curved surface and a plane.
By adopting the technical scheme, the inner top surface of the curved surface can bear stronger impact force, so that the pressure guiding blind hole has the characteristic of impact resistance, and meanwhile, the sensor also has good linearity, impact resistance and the like when detecting pressure. The inner top surface of the planar pressure guiding blind hole is easy to process, so that the sensor has the characteristic of simple preparation.
Drawings
Fig. 1 is a schematic plan view of the present embodiment.
Fig. 2 is a schematic diagram of a mechanism after the sensitive grid is attached in this embodiment.
Fig. 3 is a schematic structural diagram of the first detection chamber in this embodiment.
Fig. 4 is a schematic structural diagram of the second detection chamber in this embodiment.
Reference numerals: 1-a base; 2-a main body; 4-blind pipe bosses; 5-sensitive grid; 6-isolating force slots; 3-pressing the blind hole; 7-threading; 8-clamping area; 9-signal lines.
Detailed Description
For sensing the pressure of the medium to be measured in the pipe wall, such as liquid, colloid, gas, sauce, sand, petroleum, oil sludge, slurry, starch, etc., a pressure sensor is also required to measure the pressure of the medium to be measured in the pipe wall, and in the prior art, the pressure sensor is generally used to measure the pressure of the medium to be measured in the pipe wall. In the process of installing the pressure sensor, the pressure sensor needs to be connected with the pipe wall flowing through the medium to be measured, and particularly the threaded part of the pressure sensor is screwed, welded or clamped on the pipe wall through an installing tool. The pressure sensor can generate torque or other stress in the processes of tightening, welding or flange clamping and the like, at the moment, the pressure sensor can deform, the sensitive grids on the pressure sensor can be affected or damaged to different degrees, the sensitive grids can not accurately detect the pressure in the pipe wall, so that the performance of the pressure sensor is affected to a certain extent, the deviation between the sensed pressure and the actual pressure is larger, the problem of inaccurate pressure test occurs, the detection precision of the pressure sensor is affected, and the trouble is brought to the work of detecting the pipe wall pressure. Furthermore, some sensors employ plungers, which, once damaged, are extremely susceptible to the risk of leakage of the medium.
Therefore, when the existing pressure sensor is installed on the pipe wall, the connection part of the existing pressure sensor and the pipe wall is deformed by torque, welding or flange clamping and the like, so that the detection precision is affected and leaked, and finally the detection and the safe use of the pressure of the medium to be detected in the pipe wall are affected.
In order to solve the above technical problems, the present application has devised and conceived the following ways, in order to prevent the sensor grid generating strain from being affected, the sensor grid can be mounted or connected by a certain structure, and the sensor grid can not be affected by mounting stress or force transition.
Based on the above design and conception, the following technical solutions are described in detail below with reference to fig. 1 to 4.
A pressure sensor, as shown in fig. 1, for detecting a pressure of a medium to be measured inside thereof by a sensor body, the sensor body comprising:
the base 1 is hollow and is detachably connected with the pipe wall for conveying the medium to be tested. Furthermore, the side wall of the pipe is provided with threads 7, and the pipe can be screwed with the pipe wall through the threads 7.
The main body 2 is concave and arranged on the base 1, is positioned on the upper surface of the base 1 and fixedly connected with the upper surface, and the base 1 is used for guiding a medium to be measured into the main body 2.
The isolation detection component is arranged in the main body 2, is integrally connected with the inner bottom surface of the main body 2 and is used for being separated from the main body 2 through the side wall of the isolation detection component so as to independently detect the pressure of the medium to be detected injected into the main body by the surge.
The isolation detection component is integrally connected with the main body 2, so that the pressure of the medium to be detected, which is guided by the main body 2, is sensed, and meanwhile, the side wall of the isolation detection component is separated from the inner wall of the main body 2, so that the isolation detection component is isolated independently, and the pressure is detected independently. When the pressure sensor is installed on the pipe wall, the connection part of the pressure sensor and the pipe wall cannot deform due to the torque, so that the pressure sensor is prevented from being influenced by any external installation mode, the detection precision is prevented from being influenced, the normal detection precision of the sensor is ensured, and the pressure of a medium to be detected in the pipe wall can be normally detected in any installation mode.
Specifically, as shown in fig. 1 and 2, the isolation detection assembly in this embodiment includes:
the blind pipe boss 4 is arranged in the main body 2, and the bottom surface of the blind pipe boss 4 is fixedly connected with the bottom surface inside the main body 2 and is used for sensing the pressure of a medium to be detected entering the blind pipe boss 4. Furthermore, the blind pipe boss 4 is in any shape, so long as the sensitive grid 5 can be installed or attached, and the medium to be detected can be injected into the blind pipe boss through the inrush current.
And an isolation force groove 6 which is arranged between the main body 2 and the blind pipe boss 4, one inner wall of the isolation force groove is integrally connected with the side wall of the blind pipe boss 4, and the other inner wall of the isolation force groove is integrally connected with the inner wall of the main body 2 and is used for isolating the blind pipe boss 4 from the main body 2 so as to independently separate the blind pipe boss 4.
Specifically, as shown in fig. 1 and 2, a preset distance exists between the main body 2 and the blind pipe boss 4, and the distance can be designed according to actual detection requirements, so that effective stress between the blind pipe boss 4 and the sensor body is separated through the isolation force groove 6.
Furthermore, chamfers are arranged on the top surface and the bottom surface of the main body 2, so that the main body 2 is more delicate and attractive.
Specifically, the base 1 in this embodiment is provided with a pressure guiding blind hole 3, the inner top surface of which is located in the blind pipe boss, as shown in fig. 1 and 4, the whole body extends from the end surface of the base 1 to the blind pipe boss 4, and forms a medium cavity to be tested with the inner wall of the blind pipe boss 4, the pressure guiding blind hole 3 is used for guiding the medium to be tested into the blind pipe boss 4 through the medium cavity to be tested, preventing the medium to be tested from meeting with the sensitive detection element, so that the medium to be tested and the sensitive detection element are in a complete physical isolation state, the contact between the medium to be tested and the electric element is thoroughly stopped, the potential danger of leaking the medium to be tested is effectively reduced or stopped, and even the danger of potential ignition and detonation of the electric element to the medium is avoided. Especially in the hydrogen energy industry field, because the hydrogen molecule is little, and the pressure is very easy escape when big, can prevent hydrogen and electrical part contact and appear unsafe accident through leading to pressing blind hole 3, so have important practicality in the strict absolute seal monitoring detection application field of hydrogen energy hydrogen. And the purpose of independently sensing the pressure of the medium to be measured is achieved by isolating the blind pipe boss 4.
Specifically, the side wall of the main body 2 in this embodiment is provided with a clamping area 8, and the clamping area 8 is concave and symmetrically distributed on the side wall of the main body 2. In the process of connecting the base 1 with the pipe wall, the base 1 stretches into the pipe wall to a deeper and deeper extent, the main body 2 is screwed down by clamping the clamping area 8 by a tool, the sensor is firmly installed on the pipe wall, and the sensing precision of the blind pipe boss 4 cannot be affected.
Specifically, the blind pipe boss 4 in this embodiment is provided with a sensitive grating 5, the sensitive grating 5 is used as a sensitive detection element, the sensitive grating 5 is adhered to the surface of the blind pipe boss 4, and the blind pipe boss 4 is used for transmitting the pressure of the medium to be detected to the sensitive grating 5, so that the sensitive grating 5 generates strain. The pressure of the medium to be detected in the first cavity is sensed independently through the strain generated by the sensing grid 5, so that the detection accuracy of the sensor is ensured not to be influenced by the outside.
Further, a signal wire 9 is arranged on the sensitive grid 5, and the signal wire 9 is fixedly connected to the surface of the sensitive grid 5 and is used for transmitting strain generated by the sensitive grid 5 to an electric element in a signal mode so as to achieve the purpose of sensing pressure.
Furthermore, the inner top surface of the pressure guiding blind hole 3 is any one of a curved surface and a plane. The inner top surface of the curved surface can bear stronger impact force, so that the pressure guiding blind hole 3 has the characteristic of impact resistance, and the sensor has good linearity and impact resistance when detecting pressure, so that the detection precision and the service performance of the sensor are improved, the sensor is suitable for general detection occasions, can be completely applied to detection in tight occasions, and has good practicability. The inner top surface of the planar pressure guiding blind hole is easy to process, so that the sensor has the characteristic of simple preparation. According to different detection environments or detection occasions, the pressure guiding blind holes with planes or curved surfaces and the inner wall of the blind pipe boss 4 can be selected to form different medium cavities to be detected.
Principle and process of operation
Referring to fig. 1, 2, 3 and 4, during the process of connecting the base 1 with the pipe wall flowing through the medium to be measured, the installation tool is clamped in the clamping area 8 and rotated, the base 1 rotates on the pipe wall of the medium to be measured, the threads 7 on the base 1 gradually rotate into the pipe wall, and the installation is gradually completed. When the pressure sensor is installed on the pipe wall, the blind pipe boss 4 is separated from the main body 2 by the isolating force groove 6, so that the influence of the installation stress of the sensor is greatly reduced, the influence of any external installation mode on the pressure sensor is avoided, the detection precision is influenced, the pressure of a medium to be detected in the pipe wall can be normally detected in any installation mode, and the detection precision of the sensor is ensured. After the sensitive grid 5 is stuck on the blind pipe boss 4, the medium to be measured enters from the pressure guiding blind hole and contacts with the inner top surface of the blind pipe boss, so that the blind pipe boss 4 transmits the pressure generated by the medium to be measured to the sensitive grid 5 through the inner top surface, the sensitive grid 5 is strained, the pressure change is sensed, and the pressure change signal is transmitted through the signal wire 9.
In summary, the structure of the utility model is simple, and the blind pipe boss 4 is separated from the main body 2 only by the isolation force groove 6, so that the blind pipe boss 4 can independently detect the pressure in the medium cavity to be detected. The pressure sensor has the characteristics of convenient installation, the connection part with the pipe wall can not deform due to any form of stress, and can not be influenced by force transition, so that the detection precision is prevented from being influenced by any external installation mode, the normal detection precision of the sensor is ensured, and the pressure of a medium to be detected in the pipe wall can be normally detected in any installation mode.
The present embodiment is merely illustrative of the utility model and is not intended to limit the utility model, and those skilled in the art, after having read the present specification, may make modifications to the embodiment without creative contribution as required, but are protected by patent laws within the protection scope of the present utility model.
Claims (6)
1. A pressure sensor for detecting a pressure of a medium to be measured inside thereof by a sensor body, the sensor body comprising:
the base (1) is hollow and is detachably connected with the pipe wall for conveying the medium to be tested;
the main body (2) is concave and is arranged on the base (1) and is positioned on the upper surface of the base (1) and fixedly connected with the upper surface, and the base (1) is used for guiding the medium to be measured into the main body (2);
the isolation detection assembly is arranged in the main body (2), is integrally connected with the inner bottom surface of the main body (2), and is used for being separated from the main body (2) through the side wall of the isolation detection assembly so as to independently detect the pressure of the medium to be detected injected into the main body by the surge.
2. The pressure sensor of claim 1, wherein the isolation detection assembly comprises:
the blind pipe boss (4) is arranged in the main body (2), the bottom surface of the blind pipe boss is fixedly connected with the bottom surface of the inside of the main body (2) and is used for sensing the pressure of the medium to be detected entering the inside of the blind pipe boss (4);
and an isolation force groove (6) is formed between the main body (2) and the blind pipe boss (4), one inner wall of the isolation force groove is integrally connected with the side wall of the blind pipe boss (4), and the other inner wall of the isolation force groove is integrally connected with the inner wall of the main body (2) and is used for separating the blind pipe boss (4) from the main body (2) so as to independently form the blind pipe boss (4).
3. The pressure sensor according to claim 2, characterized in that a pressure guiding blind hole (3) is formed in the base (1), the inner top surface of the pressure guiding blind hole is located in the blind pipe boss (4), and the pressure guiding blind hole (3) is used for guiding the medium to be measured into the blind pipe boss (4).
4. A pressure sensor according to claim 3, characterized in that the side wall of the main body (2) is provided with clamping areas (8), the clamping areas (8) are concave and distributed on the side wall of the main body (2).
5. The pressure sensor according to claim 4, wherein a sensitive grating (5) is arranged on the blind pipe boss (4), the sensitive grating (5) is adhered to the surface of the blind pipe boss (4), and the blind pipe boss (4) is used for transmitting the pressure of the medium to be measured to the sensitive grating (5) so as to enable the sensitive grating (5) to generate strain.
6. The pressure sensor according to claim 4, characterized in that the inner top surface of the pressure guiding blind hole (3) is any one of a curved surface or a plane surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320798701.9U CN219284565U (en) | 2023-04-12 | 2023-04-12 | Pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320798701.9U CN219284565U (en) | 2023-04-12 | 2023-04-12 | Pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219284565U true CN219284565U (en) | 2023-06-30 |
Family
ID=86918806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320798701.9U Active CN219284565U (en) | 2023-04-12 | 2023-04-12 | Pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219284565U (en) |
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2023
- 2023-04-12 CN CN202320798701.9U patent/CN219284565U/en active Active
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