CN216144454U - Micro differential pressure transmitter air inlet structure and micro differential pressure transmitter - Google Patents
Micro differential pressure transmitter air inlet structure and micro differential pressure transmitter Download PDFInfo
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- CN216144454U CN216144454U CN202121759761.7U CN202121759761U CN216144454U CN 216144454 U CN216144454 U CN 216144454U CN 202121759761 U CN202121759761 U CN 202121759761U CN 216144454 U CN216144454 U CN 216144454U
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Abstract
The utility model discloses a micro differential pressure transmitter air inlet structure and a micro differential pressure transmitter, which comprise a first pressure interface and a second pressure interface which are arranged on the back of a transmitter shell, wherein the first pressure interface is connected to a first detection port of a transmitter core through a first air pipe; the method is characterized in that: and a third pressure interface communicated with the first pressure interface and a fourth pressure interface communicated with the second pressure interface are respectively arranged on the side surface of the transmitter shell. The air inlet position of the utility model is diversified, and the utility model can adapt to different installation requirements of various conditions and positions.
Description
Technical Field
The utility model relates to the technical field of micro-differential pressure transmitters, in particular to a micro-differential pressure transmitter air inlet structure and a micro-differential pressure transmitter comprising the same, which are mainly used in the field of air or neutral gas detection.
Background
As shown in fig. 1, in the air inlet structure of most micro differential pressure transmitter products in the current market, two air inlets 101 are arranged on the back of the product, and are directly communicated with a core body 103 inside the transmitter through a silicone tube 102, and meanwhile, a standby air inlet 104 is arranged on the front of the product. When the front backup inlet 104 is activated, one inlet 101 on the back of the product needs to be sealed off to prevent pressure accuracy from being compromised.
This structure causes a great limitation to the installation and use of the product: because the air inlet 101 is fixed in position, the air inlet can only be connected from the back of the product, and the position selection of the product during installation and use is limited.
Disclosure of Invention
The utility model aims to solve the problems, and provides an air inlet structure of a micro differential pressure transmitter and the micro differential pressure transmitter, wherein the air inlet position is diversified, and the micro differential pressure transmitter can adapt to different installation requirements of various conditions and positions.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
a micro-differential pressure transmitter air inlet structure comprises a first pressure interface and a second pressure interface which are arranged on the back of a transmitter shell, wherein the first pressure interface is connected to a first detection port of a transmitter core through a first air pipe, and the second pressure interface is connected to a second detection port of the transmitter core through a second air pipe; and a third pressure interface communicated with the first pressure interface and a fourth pressure interface communicated with the second pressure interface are respectively arranged on the side surface of the transmitter shell. By adopting the structure, different interface combinations can be adopted according to actual use requirements during installation, so that different installation requirements of various environments and various positions are met, and better adaptability is achieved.
Preferably, the air inlet structure further comprises at least one plug.
Preferably, the plug includes a cylindrical threaded connection portion for being in threaded connection with the housing, a cap portion integrally formed at one end of the threaded connection portion, and a silicone gasket disposed in the threaded connection portion and closely attached to the cap portion. Namely, the plug is installed by adopting a threaded structure, and is sealed by adopting a silica gel pad, so that the sealing performance of the product after long-time use can be completely ensured.
Preferably, the plug is arranged on the first pressure interface or the third pressure interface, and the end part of the first pressure interface or the third pressure interface is abutted against the silica gel pad.
Preferably, there are two plugs, one of the two plugs is disposed on the first pressure port or the third pressure port, and the other plug is disposed on the second pressure port or the fourth pressure port.
Preferably, the front surface of the shell is also provided with a standby pressure interface, and the standby pressure interface is in a closed state in a factory state; when the standby pressure interface is started, the first pressure interface and the third pressure interface or the second pressure interface and the fourth pressure interface need to be blocked and sealed.
A micro-differential pressure transmitter, comprising:
a housing;
the core body is arranged in the shell and used for detecting pressure difference;
the waterproof joint is arranged on the shell;
the circuit board is arranged in the shell and connected with the core body; the output line of the water-proof connector extends to the outside of the shell through the water-proof connector;
the back of the shell is respectively provided with a first pressure interface and a second pressure interface, the first pressure interface is connected to a first detection port of the transmitter core through a first air pipe, and the second pressure interface is connected to a second detection port of the transmitter core through a second air pipe; and a third pressure interface communicated with the first pressure interface and a fourth pressure interface communicated with the second pressure interface are respectively arranged on the side surface of the transmitter shell. By adopting the structure, different interface combinations can be adopted according to actual use requirements during installation, so that different installation requirements of various environments and various positions are met, and better adaptability is achieved.
Preferably, the micro differential pressure transmitter further comprises at least one plug.
Preferably, the plug includes a cylindrical threaded connection portion for being in threaded connection with the housing, a cap portion integrally formed at one end of the threaded connection portion, and a silicone gasket disposed in the threaded connection portion and closely attached to the cap portion. Namely, the plug is installed by adopting a threaded structure, and is sealed by adopting a silica gel pad, so that the sealing performance of the product after long-time use can be completely ensured.
Preferably, the plug is arranged on the first pressure interface or the third pressure interface, and the end part of the first pressure interface or the third pressure interface is abutted against the silica gel pad.
Preferably, there are two plugs, one of the two plugs is arranged on the first pressure interface or the third pressure interface, and the other plug is arranged on the second pressure interface or the fourth pressure interface; the end part of the first pressure interface or the third pressure interface and the end part of the second pressure interface or the fourth pressure interface are abutted against the silica gel pad.
Preferably, the front surface of the shell is also provided with a standby pressure interface, and the standby pressure interface is in a closed state in a factory state; when the standby pressure interface is started, the first pressure interface and the third pressure interface or the second pressure interface and the fourth pressure interface need to be blocked and sealed.
The utility model has the beneficial effects that:
1. the side surface of the transmitter shell is respectively provided with a third pressure interface communicated with the first pressure interface and a fourth pressure interface communicated with the second pressure interface. By adopting the structure, different interface combinations can be adopted according to actual use requirements during installation, so that different installation requirements of various environments and various positions are met, and better adaptability is achieved.
2. The plug is installed by adopting a threaded structure, and is sealed by adopting the silica gel pad, so that the sealing performance of the product after long-time use can be completely ensured.
Drawings
Fig. 1 is a schematic structural diagram of the background art of the present invention.
Fig. 2 is a schematic structural diagram of a micro-differential pressure transmitter of the present invention.
Fig. 3 is a partially enlarged view of fig. 2.
Fig. 4 is a cross-sectional view of the bulkhead of the utility model after assembly.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, are within the scope of the present invention.
As shown in fig. 3, the micro-differential pressure transmitter air inlet structure of the present embodiment includes a first pressure interface 1 and a second pressure interface 2, which are disposed on the back of a transmitter housing 5, where the first pressure interface 1 is connected to a first detection port of a transmitter core 8 through a first air pipe 6, and the second pressure interface 2 is connected to a second detection port of the transmitter core 8 through a second air pipe 7; and the side surface of the transmitter shell 5 is respectively provided with a third pressure interface 3 communicated with the first pressure interface 1 and a fourth pressure interface 4 communicated with the second pressure interface 2. By adopting the structure, different interface combinations can be adopted according to actual use requirements during installation, so that different installation requirements of various environments and various positions are met, and better adaptability is achieved.
In practical application, the plug 9 needs to be arranged according to actual use conditions. As shown in fig. 4, the plug 9 includes a cylindrical threaded connection portion 9-1 for threaded connection with the housing 5, a cap portion 9-2 integrally formed at one end of the threaded connection portion 9-1, and a silicone pad 9-3 disposed in the threaded connection portion 9-1 and closely attached to the cap portion 9-2. Namely, the plug 9 is installed by adopting a threaded structure, and is sealed by adopting the silica gel pad 9-3, so that the sealing performance of the product after long-time use can be completely ensured. When measuring differential pressure, a first pressure interface 1 and a second pressure interface 2 can be selected to be connected with a high-pressure source and a low-pressure source, and a third pressure interface 3 and a fourth pressure interface 4 are blocked and sealed; or the third pressure interface 3 and the fourth pressure interface 4 are selected to be connected with a high-pressure source and a low-pressure source, and the first pressure interface 1 and the second pressure interface 2 are blocked and sealed; or the first pressure interface 1 and the fourth pressure interface 4 are selected to be connected with a high-pressure source and a low-pressure source, and the second pressure interface 2 and the third pressure interface 3 are blocked and sealed; or the second pressure interface 2 and the third pressure interface 3 are selected to be connected with a high-pressure source and a low-pressure source, so that the first pressure interface 1 and the fourth pressure interface 4 are blocked and sealed. After the installation is finished, the end parts of the pressure interfaces are abutted against the silica gel pads 9-3, and the sealing performance is ensured.
In addition, if the first pressure port 1 and the third pressure port 3 are high pressure ports, the second pressure port 2 and the fourth pressure port 4 are low pressure ports; when measuring the negative pressure, the pressure source is connected with the second pressure interface 2, the fourth pressure interface 4 is blocked and sealed, and the first pressure interface 1 and/or the third pressure interface 3 are communicated with the atmosphere; or the pressure source is connected with the fourth pressure interface 4, the second pressure interface 2 is blocked and closed, and the first pressure interface 1 and/or the third pressure interface 3 are communicated with the atmosphere. When measuring the pressure, the pressure source is connected with the first pressure interface 1, the third pressure interface 3 is blocked and sealed, and the second pressure interface 2 and the fourth pressure interface 4 are communicated with the atmosphere; or the pressure source is connected with the third pressure interface 3, the first pressure interface 1 is blocked, and the second pressure interface 2 and the fourth pressure interface 4 are communicated with the atmosphere. After the installation is finished, the end parts of the pressure interfaces are abutted against the silica gel pads 9-3, and the sealing performance is ensured.
As a preferred implementation of this embodiment, the front surface of the housing 5 is further provided with a standby pressure interface 10, and in a factory state, the standby pressure interface 10 is in a closed state; when the standby pressure connection 10 is activated, the first pressure connection 1 and the third pressure connection 3, or the second pressure connection 2 and the fourth pressure connection 4, need to be sealed.
As shown in fig. 2, the micro differential pressure transmitter of the present embodiment includes:
a housing 5;
a core 8 disposed in the housing 5 for detecting a pressure difference;
a waterproof joint 11 mounted on the housing 5;
a circuit board 12 disposed in the housing 5 and connected to the core 8; the output line of the water-proof connector extends to the outside of the shell 5 through the water-proof connector 11;
the back of the shell 5 is respectively provided with a first pressure interface 1 and a second pressure interface 2, the first pressure interface 1 is connected to a first detection port of a transmitter core body 8 through a first air pipe 6, and the second pressure interface 2 is connected to a second detection port of the transmitter core body 8 through a second air pipe 7; and the side surface of the transmitter shell 5 is respectively provided with a third pressure interface 3 communicated with the first pressure interface 1 and a fourth pressure interface 4 communicated with the second pressure interface 2. When the installation, can adopt different interface combinations according to the actual use demand to satisfy the different installation demands of various environment, various positions, have better adaptability.
In practical application, the plug 9 needs to be arranged according to actual use conditions. As shown in fig. 4, the plug 9 includes a cylindrical threaded connection portion 9-1 for threaded connection with the housing 5, a cap portion 9-2 integrally formed at one end of the threaded connection portion 9-1, and a silicone pad 9-3 disposed in the threaded connection portion 9-1 and closely attached to the cap portion 9-2. Namely, the plug 9 is installed by adopting a threaded structure, and is sealed by adopting the silica gel pad 9-3, so that the sealing performance of the product after long-time use can be completely ensured. When measuring differential pressure, a first pressure interface 1 and a second pressure interface 2 can be selected to be connected with a high-pressure source and a low-pressure source, and a third pressure interface 3 and a fourth pressure interface 4 are blocked and sealed; or the third pressure interface 3 and the fourth pressure interface 4 are selected to be connected with a high-pressure source and a low-pressure source, and the first pressure interface 1 and the second pressure interface 2 are blocked and sealed; or the first pressure interface 1 and the fourth pressure interface 4 are selected to be connected with a high-pressure source and a low-pressure source, and the second pressure interface 2 and the third pressure interface 3 are blocked and sealed; or the second pressure interface 2 and the third pressure interface 3 are selected to be connected with a high-pressure source and a low-pressure source, so that the first pressure interface 1 and the fourth pressure interface 4 are blocked and sealed. After the installation is finished, the end parts of the pressure interfaces are abutted against the silica gel pads 9-3, and the sealing performance is ensured.
In addition, if the first pressure port 1 and the third pressure port 3 are high pressure ports, the second pressure port 2 and the fourth pressure port 4 are low pressure ports; when measuring the negative pressure, the pressure source is connected with the second pressure interface 2, the fourth pressure interface 4 is blocked and sealed, and the first pressure interface 1 and/or the third pressure interface 3 are communicated with the atmosphere; or the pressure source is connected with the fourth pressure interface 4, the second pressure interface 2 is blocked and closed, and the first pressure interface 1 and/or the third pressure interface 3 are communicated with the atmosphere. When measuring the pressure, the pressure source is connected with the first pressure interface 1, the third pressure interface 3 is blocked and sealed, and the second pressure interface 2 and the fourth pressure interface 4 are communicated with the atmosphere; or the pressure source is connected with the third pressure interface 3, the first pressure interface 1 is blocked, and the second pressure interface 2 and the fourth pressure interface 4 are communicated with the atmosphere. After the installation is finished, the end parts of the pressure interfaces are abutted against the silica gel pads 9-3, and the sealing performance is ensured.
As a preferred implementation of this embodiment, the front surface of the housing 5 is further provided with a standby pressure interface 10, and in a factory state, the standby pressure interface 10 is in a closed state; when the standby pressure connection 10 is activated, the first pressure connection 1 and the third pressure connection 3, or the second pressure connection 2 and the fourth pressure connection 4, need to be sealed.
Claims (11)
1. The micro-differential pressure transmitter air inlet structure comprises a first pressure interface (1) and a second pressure interface (2) which are arranged on the back surface of a transmitter shell (5), wherein the first pressure interface (1) is connected to a first detection port of a transmitter core body (8) through a first air pipe (6), and the second pressure interface (2) is connected to a second detection port of the transmitter core body (8) through a second air pipe (7); the method is characterized in that: and the side surface of the transmitter shell (5) is respectively provided with a third pressure interface (3) communicated with the first pressure interface (1) and a fourth pressure interface (4) communicated with the second pressure interface (2).
2. The differential pressure transmitter air intake structure of claim 1, wherein: the air inlet structure also comprises at least one plug (9).
3. The differential pressure transmitter air intake structure of claim 2, wherein: the plug (9) comprises a cylindrical threaded connecting part (9-1) which is used for being in threaded connection with the shell (5), a cap part (9-2) which is integrally formed at one end of the threaded connecting part (9-1), and a silica gel pad (9-3) which is arranged in the threaded connecting part (9-1) and clings to the cap part (9-2).
4. The micro-differential pressure transmitter air intake structure of claim 3, wherein: the plug (9) is arranged on the first pressure interface (1) or the third pressure interface (3), and the end part of the first pressure interface (1) or the third pressure interface (3) is abutted against the silica gel pad (9-3).
5. The differential pressure transmitter air intake structure of claim 2, wherein: the number of the plugs (9) is two, one plug is arranged on the first pressure interface (1) or the third pressure interface (3), and the other plug is arranged on the second pressure interface (2) or the fourth pressure interface (4).
6. The differential pressure transmitter air intake structure of claim 1, wherein: and the front surface of the shell (5) is also provided with a standby pressure interface (10).
7. A micro-differential pressure transmitter, comprising:
a housing (5);
a core (8) disposed in the housing (5) for detecting a pressure difference;
a waterproof joint (11) mounted on the housing (5);
the circuit board (12) is arranged in the shell (5) and is connected with the core body (8); the output line of the water-proof connector extends to the outside of the shell (5) through the water-proof connector (11);
the method is characterized in that: the back of the shell (5) is respectively provided with a first pressure interface (1) and a second pressure interface (2), the first pressure interface (1) is connected to a first detection port of the transmitter core body (8) through a first air pipe (6), and the second pressure interface (2) is connected to a second detection port of the transmitter core body (8) through a second air pipe (7); and the side surface of the transmitter shell (5) is respectively provided with a third pressure interface (3) communicated with the first pressure interface (1) and a fourth pressure interface (4) communicated with the second pressure interface (2).
8. The micro differential pressure transmitter of claim 7, wherein: the micro differential pressure transmitter also comprises at least one plug (9).
9. The micro differential pressure transmitter of claim 8, wherein: the plug (9) comprises a cylindrical threaded connecting part (9-1) which is used for being in threaded connection with the shell (5), a cap part (9-2) which is integrally formed at one end of the threaded connecting part (9-1), and a silica gel pad (9-3) which is arranged in the threaded connecting part (9-1) and clings to the cap part (9-2).
10. The micro differential pressure transmitter of claim 9, wherein: the plug (9) is arranged on the first pressure interface (1) or the third pressure interface (3), and the end part of the first pressure interface (1) or the third pressure interface (3) is abutted against the silica gel pad (9-3).
11. The micro differential pressure transmitter of claim 9, wherein: two plugs (9) are arranged, wherein one plug is arranged on the first pressure interface (1) or the third pressure interface (3), and the other plug is arranged on the second pressure interface (2) or the fourth pressure interface (4); the end part of the first pressure interface (1) or the third pressure interface (3) and the end part of the second pressure interface (2) or the fourth pressure interface (4) are abutted against the silica gel pad (9-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121759761.7U CN216144454U (en) | 2021-07-30 | 2021-07-30 | Micro differential pressure transmitter air inlet structure and micro differential pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121759761.7U CN216144454U (en) | 2021-07-30 | 2021-07-30 | Micro differential pressure transmitter air inlet structure and micro differential pressure transmitter |
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| Publication Number | Publication Date |
|---|---|
| CN216144454U true CN216144454U (en) | 2022-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121759761.7U Active CN216144454U (en) | 2021-07-30 | 2021-07-30 | Micro differential pressure transmitter air inlet structure and micro differential pressure transmitter |
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| CN (1) | CN216144454U (en) |
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- 2021-07-30 CN CN202121759761.7U patent/CN216144454U/en active Active
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