CN215865617U - Differential pressure transmitter base - Google Patents
Differential pressure transmitter base Download PDFInfo
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- CN215865617U CN215865617U CN202121610772.9U CN202121610772U CN215865617U CN 215865617 U CN215865617 U CN 215865617U CN 202121610772 U CN202121610772 U CN 202121610772U CN 215865617 U CN215865617 U CN 215865617U
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Abstract
The utility model discloses a differential pressure transmitter base which comprises a pressure guide seat body, wherein two pressure guide cavities are arranged on the pressure guide seat body and are arranged oppositely, two drainage channels are also arranged in the pressure guide seat body and correspond to the pressure guide cavities one by one, the lower ends of the drainage channels are communicated with the corresponding pressure guide cavities, the upper ends of the drainage channels penetrate out of the upper end of the pressure guide seat body, liquid storage cavities are also arranged in the pressure guide seat body and are communicated with any pressure guide cavity. By adopting the differential pressure transmitter base, the liquid storage cavity is arranged at the bottom of the pressure guide seat body and serves as a storage point of silicon oil, and the quantity of the silicon oil at the low-pressure side is supplemented, so that the quantity of the silicon oil at the high-pressure side (a pressure stabilizing chamber and a high-pressure end diaphragm deformation cavity) is equal to that at the low-pressure side (a low-pressure end diaphragm deformation cavity), the pressure balance at the two sides is ensured, and the influence on the measurement precision is avoided.
Description
Technical Field
The utility model relates to an installation base, in particular to a differential pressure transmitter base.
Background
The core detection component of the capacitance differential pressure transmitter is a diaphragm capacitance differential pressure transmitter (diaphragm pressure sensor), which converts two external different pressure signals into corresponding capacitance changes, and the rear detection circuit converts the capacitance changes into electric signals, and the electric signals are processed and detected to obtain the differential pressure value of the external pressure.
The diaphragm type pressure sensor comprises two cake-shaped diaphragm seats, the edges of the two diaphragm seats are welded, a diaphragm deformation cavity is arranged between the two diaphragm seats, a measuring diaphragm is arranged between the two diaphragm seats, pressure transmission channels penetrate through the two diaphragm seats respectively, silicone oil is filled in the pressure transmission channels and the diaphragm deformation cavity, the fluid pressure to be measured outside is introduced into the two sides of the measuring diaphragm as a pressure transmission medium, and the size of the deformation of the measuring diaphragm reflects the size of differential pressure.
In order to solve the above problems, the applicant proposes that a pressure stabilizing chamber is arranged at the outer side of the diaphragm type pressure sensor, silicone oil is filled in the pressure stabilizing chamber, the fluid pressure (the pressure of the high-pressure side) is led to the pressure stabilizing chamber, and the silicone oil in the pressure stabilizing chamber and the silicone oil in the diaphragm type deformation cavity jointly act on the diaphragm type pressure sensor, so as to offset/weaken the internal pressure of the deformation cavity (Chinese patent: CN 202011592010.0).
However, in the course of subsequent studies, researchers have found that the above solution still has the following technical problems: the volume of the silicon oil changes along with the temperature change, and the quantity of the silicon oil on the high-pressure side (a pressure stabilizing chamber and a high-pressure end diaphragm deformation cavity) and the quantity of the silicon oil on the low-pressure side (a low-pressure end diaphragm deformation cavity) are greatly different, so that the silicon oil on the high-pressure side and the silicon oil on the low-pressure side are changed in different degrees and scales, the internal and external pressure unbalance of the high-pressure side and the low-pressure side is caused, the measurement precision is influenced, and a new difference transmitter base is needed for balancing the quantity of the silicon oil on the high-pressure side and the low-pressure side.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a differential pressure transmitter base, which is helpful to balance the amount of silicone oil on the high-pressure side and the low-pressure side.
The technical scheme is as follows:
the utility model provides a differential pressure transmitter base, its key lies in, presses the seat body including drawing, draw to be equipped with two on pressing the seat body and draw and press the chamber, two draw and press the chamber to set up dorsad, draw and press this internal two drainage channel that still is equipped with of seat, drainage channel with draw and press chamber one-to-one, drainage channel's lower extreme and corresponding draw and press the chamber switch-on, drainage channel's upper end is followed the upper end of drawing and pressing the seat body is worn out its characterized in that:
and a liquid storage cavity is also arranged in the pressure guiding seat body and communicated with any pressure guiding cavity.
The effect of adopting above scheme: the bottom of the pressure guide seat body is provided with a liquid storage cavity which is used as a storage point of silicon oil, and the quantity of the silicon oil on the low-pressure side is supplemented, so that the quantity of the silicon oil on the high-pressure side (a pressure stabilizing chamber and a high-pressure end diaphragm deformation cavity) is equal to that of the silicon oil on the low-pressure side (a low-pressure end diaphragm deformation cavity), the pressure balance on the two sides is ensured, and the measurement precision is prevented from being influenced.
The liquid storage cavity is located at the bottom of the pressure guiding seat body and provided with an opening, the opening of the liquid storage cavity penetrates out of the bottom surface of the pressure guiding seat body, the opening of the liquid storage cavity is communicated with the outside, and the opening of the liquid storage cavity is provided with a sealing plug.
The side surface of the pressure guide seat body is also provided with two pressure guide ports, the pressure guide ports are arranged back to back, the pressure guide ports correspond to the pressure guide cavities one by one, and the pressure guide ports are communicated with the corresponding pressure guide cavities;
the pressure guiding opening is surrounded by an annular diaphragm mounting seat which is an annular welding boss, an isolation diaphragm is buckled on the pressure guiding opening, and the outer ring edge of the isolation diaphragm is fixedly connected with the inner ring edge of the diaphragm mounting seat.
The pressure guide seat body comprises a mounting base and a sensor mounting seat, the mounting base is in a cube shape, the sensor mounting seat is fixed on the upper end face of the mounting base, and the outlet ends of the two flow guide channels respectively penetrate out of the upper end face of the sensor mounting seat;
the sensor comprises a sensor mounting seat, a sensor mounting seat and a drainage channel, wherein the sensor mounting seat is arranged on the base, the sensor mounting seat is arranged on the sensor mounting seat, two pressure tube sockets are arranged on the sensor mounting seat, the pressure tube sockets are in one-to-one outlet at the upper end of the drainage channel, and the upper end of the sensor mounting seat penetrates out of the upper end of the corresponding pressure tube socket from the upper end of the sensor mounting seat.
The sensor mounting seat comprises a horizontally-arranged butt joint disc, the lower surface of the butt joint disc is fixed with the upper end face of the mounting base, the upper surface of the butt joint disc is fixedly provided with a butt joint seat, and the edge of the butt joint disc extends outwards and exceeds the butt joint seat.
Has the advantages that: the liquid storage cavity is arranged at the bottom of the pressure guide seat body and serves as a storage point of the silicone oil, and the quantity of the silicone oil on the low-pressure side is supplemented, so that the quantity of the silicone oil on the high-pressure side (a pressure stabilizing chamber and a high-pressure end diaphragm deformation cavity) is equal to that of the silicone oil on the low-pressure side (a low-pressure end diaphragm deformation cavity), the pressure balance of the two sides is guaranteed, and the measurement precision is prevented from being influenced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a schematic view of the cross-sectional structure A-A of FIG. 2;
fig. 4 is a partially enlarged view of fig. 3 at C.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
As shown in fig. 1 to 4, a differential pressure transmitter base mainly comprises a pressure guide seat body, wherein two pressure guide cavities 1c are arranged on the pressure guide seat body, the two pressure guide cavities 1c are arranged back to back, two drainage channels are further arranged in the pressure guide seat body, the drainage channels correspond to the pressure guide cavities 1c one to one, the lower ends of the drainage channels are communicated with the corresponding pressure guide cavities 1c, and the upper ends of the drainage channels penetrate out from the upper end of the pressure guide seat body, and the differential pressure transmitter base is characterized in that:
and a liquid storage cavity 25b is further arranged in the pressure guide seat body, and the liquid storage cavity 25b is communicated with any pressure guide cavity 1 c.
Wherein:
the liquid storage cavity 25b is located at the bottom of the pressure guiding seat body, an opening is formed in the liquid storage cavity 25b, the opening of the liquid storage cavity 25b penetrates out of the bottom surface of the pressure guiding seat body, the opening of the liquid storage cavity 25b is communicated with the outside, and a sealing plug is arranged at the opening of the liquid storage cavity 25 b.
The side surface of the pressure guide seat body is also provided with two pressure guide ports, the pressure guide ports are arranged back to back, the pressure guide ports correspond to the pressure guide cavities 1c one by one, and the pressure guide ports are communicated with the corresponding pressure guide cavities 1 c;
an annular diaphragm mounting seat 4 is further arranged around the pressure leading port, the diaphragm mounting seat 4 is an annular welding boss, an isolation diaphragm 4a is further buckled on the pressure leading port, and the outer ring edge of the isolation diaphragm 4a is fixedly connected with the inner ring edge of the diaphragm mounting seat 4.
The pressure guide seat body comprises a mounting base 2a and a sensor mounting seat, the mounting base 2a is in a cubic shape, the sensor mounting seat is fixed on the upper end face of the mounting base 2a, and the outlet ends of the two drainage channels respectively penetrate out of the upper end face of the sensor mounting seat;
the sensor mounting seat is characterized in that two pressure tube sockets 22 are further arranged on the upper end face of the sensor mounting seat respectively, the pressure tube sockets 22 are fixed on the upper end face of the sensor mounting seat, the pressure tube sockets 22 correspond to outlets at the upper end of the drainage channel one by one, and the upper end of the drainage channel penetrates out of the upper end face of the corresponding pressure tube socket 22.
The sensor mounting seat comprises a horizontally-placed butt joint disc 2b, the lower surface of the butt joint disc 2b is fixed with the upper end surface of the mounting base 2a, a butt joint seat 2c is fixed on the upper surface of the butt joint disc 2b, and the edge of the butt joint disc 2b extends outwards and exceeds the butt joint seat 2 c.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (5)
1. The utility model provides a differential pressure transmitter base, presses the seat body including drawing, it presses chamber (1c), two to draw to be equipped with two on pressing the seat body draw and press chamber (1c) to set up back to back, draw and press this internal two drainage channel that still is equipped with of seat, drainage channel with draw and press chamber (1c) one-to-one, drainage channel's lower extreme and corresponding draw and press chamber (1c) switch-on, drainage channel's upper end is followed draw and press the upper end of seat body to wear out its characterized in that:
the pressure guiding seat is characterized in that a liquid storage cavity (25b) is further formed in the pressure guiding seat body, and the liquid storage cavity (25b) is communicated with any pressure guiding cavity (1 c).
2. The differential pressure transmitter mount of claim 1, wherein: the liquid storage cavity (25b) is located at the bottom of the pressure guiding seat body, an opening is formed in the liquid storage cavity (25b), the opening of the liquid storage cavity (25b) penetrates out of the bottom surface of the pressure guiding seat body, the opening of the liquid storage cavity (25b) is communicated with the outside, and a sealing plug is arranged at the opening of the liquid storage cavity (25 b).
3. The differential pressure transmitter mount of claim 2, wherein: the side surface of the pressure guide seat body is also provided with two pressure guide ports which are arranged back to back, the pressure guide ports correspond to the pressure guide cavities (1c) one by one, and the pressure guide ports are communicated with the corresponding pressure guide cavities (1 c);
the pressure guiding opening is surrounded with an annular membrane mounting seat (4), the membrane mounting seat (4) is an annular welding boss, an isolation membrane (4a) is further buckled on the pressure guiding opening, and the outer ring edge of the isolation membrane (4a) is fixedly connected with the inner ring edge of the membrane mounting seat (4).
4. The differential pressure transmitter mount of claim 3, wherein: the pressure guide seat body comprises a mounting base (2a) and a sensor mounting seat, the mounting base (2a) is in a cubic shape, the sensor mounting seat is fixed on the upper end face of the mounting base (2a), and the outlet ends of the two drainage channels respectively penetrate out of the upper end face of the sensor mounting seat;
the sensor mounting seat is characterized in that two pressure tube sockets (22) are further arranged on the upper end face of the sensor mounting seat respectively, the pressure tube sockets (22) are fixed on the upper end face of the sensor mounting seat, the pressure tube sockets (22) correspond to outlets at the upper end of the drainage channel in a one-to-one mode, and the upper end of the drainage channel penetrates out of the corresponding upper end face of the pressure tube socket (22).
5. The differential pressure transmitter mount of claim 4, wherein: the sensor mounting seat comprises a horizontally-placed butt joint disc (2b), the lower surface of the butt joint disc (2b) is fixed with the upper end surface of the mounting base (2a), a butt joint seat (2c) is fixed on the upper surface of the butt joint disc (2b), and the edge of the butt joint disc (2b) extends outwards and exceeds the butt joint seat (2 c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121610772.9U CN215865617U (en) | 2021-07-15 | 2021-07-15 | Differential pressure transmitter base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121610772.9U CN215865617U (en) | 2021-07-15 | 2021-07-15 | Differential pressure transmitter base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215865617U true CN215865617U (en) | 2022-02-18 |
Family
ID=80334150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121610772.9U Active CN215865617U (en) | 2021-07-15 | 2021-07-15 | Differential pressure transmitter base |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215865617U (en) |
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2021
- 2021-07-15 CN CN202121610772.9U patent/CN215865617U/en active Active
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