CN214373071U - Differential pressure transmitter sensor mounting mechanism - Google Patents
Differential pressure transmitter sensor mounting mechanism Download PDFInfo
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- CN214373071U CN214373071U CN202023240703.1U CN202023240703U CN214373071U CN 214373071 U CN214373071 U CN 214373071U CN 202023240703 U CN202023240703 U CN 202023240703U CN 214373071 U CN214373071 U CN 214373071U
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Abstract
The utility model discloses a differential pressure transmitter sensor mounting mechanism, including sensor mount pad and diaphragm type pressure sensor, be equipped with on this sensor mount pad and place counter bore and two and draw and press pipe socket, place the counter bore and be located two draw and press between the pipe socket, it has the pressure channel to draw respectively to run through on the sensor mount pad corresponding two draw and press the pipe socket; the lower portion of the diaphragm type pressure sensor is suspended in the placing counter bore, two pressure guiding pipes are led out of the diaphragm type pressure sensor, the free ends of the two pressure guiding pipes are respectively inserted into two pressure guiding pipe sockets, and the pressure guiding pipes are communicated with the corresponding pressure guiding channels. Adopt the utility model discloses a showing the effect and separating the installation with diaphragm formula pressure sensor, avoiding in the later stage assembly process of being convenient for to support with other parts and lean on, the clamping stress is eliminated in the cooperation.
Description
Technical Field
The utility model relates to a pressure measurement device, concretely relates to differential pressure transmitter sensor installation mechanism.
Background
The core detecting component of the capacitance differential pressure transmitter is a diaphragm type capacitance differential pressure sensor (diaphragm type pressure sensor), which converts two externally-applied different pressure signals into corresponding capacitance changes, a rear detecting circuit converts the capacitance changes into electric signals, and the electric signals are processed and detected to obtain the differential pressure value of the externally-applied 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, external pressure to be measured is introduced into the two sides of the measuring diaphragm, and the size of the deformation of the measuring diaphragm reflects the size of differential pressure.
The traditional diaphragm type pressure sensor is installed in a way that an isolation diaphragm is arranged on the outer wall of a diaphragm seat, the isolation diaphragm seals an outer port of a pressure transmission channel, a welding ring is generally arranged on the outer side of the isolation diaphragm for the convenience of installation and stability of the isolation diaphragm, and then silicone oil is filled in the pressure transmission channel and a diaphragm deformation cavity, so that a measurement diaphragm is kept at a fixed initial position, and a stable pressure system is formed inside the diaphragm type pressure sensor; the isolation diaphragms are fixed on the diaphragm type pressure sensor and then are installed together at the later stage; this leads to two major problems:
1. in the later assembling process, the isolation diaphragm and/or the welding ring is abutted against the assembling part and is influenced by clamping stress, the isolation diaphragm is easy to deform, so that the internal silicone oil is pushed to flow, the initial position of the measuring diaphragm of each transmitter is changed under different conditions, and the measuring precision is influenced;
2. when high-pressure fluid is measured, the internal pressure of the deformation cavity is obviously increased, the tendency that the welding seam of the two membrane seats is cracked is achieved, the condition is increased along with the time and the pressure is increased, and the service life of the diaphragm type pressure sensor is not prolonged.
Therefore, it is necessary to fully consider and solve the above problems and design a set of suitable technical solutions.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a differential pressure transmitter sensor installation mechanism.
The technical scheme is as follows:
the utility model provides a differential pressure transmitter sensor installation mechanism which the main points are: the pressure sensor comprises a sensor mounting seat and a diaphragm type pressure sensor, wherein a placing counter bore and two pressure guiding pipe sockets are arranged on the sensor mounting seat, the placing counter bore is positioned between the two pressure guiding pipe sockets, and pressure guiding channels penetrate through the sensor mounting seat corresponding to the two pressure guiding pipe sockets respectively;
the lower portion of the diaphragm type pressure sensor is suspended in the placing counter bore, two pressure guiding pipes are led out of the diaphragm type pressure sensor, the free ends of the two pressure guiding pipes are respectively inserted into two pressure guiding pipe sockets, and the pressure guiding pipes are communicated with the corresponding pressure guiding channels.
Adopt the beneficial effects of the utility model: the diaphragm type pressure sensor is installed in a separated mode, so that the diaphragm type pressure sensor is prevented from being abutted to other parts in the later-stage assembling process, and clamping stress is eliminated in a matched mode.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of section C of FIG. 1;
fig. 3 is a schematic structural view of the pressure guiding seat 2;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a cross-sectional view of C-C' of FIG. 4;
fig. 6 is a schematic view showing an assembled relationship between the pressure guide seat 2 and the sealing cover 3;
FIG. 7 is an enlarged view of portion A of FIG. 6;
FIG. 8 is an enlarged view of portion B of FIG. 6;
FIG. 9 is a schematic structural view after assembling the pressure-taking seat 1;
fig. 10 is an enlarged view of a portion D of fig. 9.
Detailed Description
The present invention will be further described with reference to the following examples and accompanying drawings.
Example 1:
as shown in fig. 1 to 5, a differential pressure transducer sensor mounting mechanism includes a sensor mounting seat 24 and a diaphragm type pressure sensor 25, wherein the sensor mounting seat 24 is provided with a placing counter bore and two pressure leading pipe sockets 22, the placing counter bore is located between the two pressure leading pipe sockets 22, and pressure leading channels 2a are respectively penetrated through the sensor mounting seat 24 corresponding to the two pressure leading pipe sockets 22; the pressure guiding pipe socket 22 includes a socket body, and a jack is penetrated through the socket body and is connected to the outlet end of the pressure guiding passage 2 a.
The placing counter bore comprises two opposite arched hole walls and an arched hole bottom, and the arched edges of the two arched hole walls are respectively connected with the two arched side edges of the arched hole bottom. The lower portion of the diaphragm pressure sensor 25 is suspended within the placement counterbore.
Two pressure guiding pipes 251 are led out of the diaphragm pressure sensor 25, the free ends of the two pressure guiding pipes 251 are respectively inserted into the two pressure guiding pipe sockets 22, and the pressure guiding pipes 251 are communicated with the corresponding pressure guiding channels 2 a.
The sensor mounting seat 24 includes a horizontally disposed docking tray 241, a docking seat 242 is fixed on the upper surface of the docking tray 241, the edge of the docking tray 241 extends outward and exceeds the docking seat 242, the outer wall of the docking seat 242 is provided with a socket screw, and the pressure tube socket 22 is located on the upper end surface of the docking seat 242. The sensor mounting seat 24 is characterized in that a mounting base 23 is further arranged below the sensor mounting seat 24, the mounting base 23 is in a cube shape, the sensor mounting seat 24 is fixed on the upper end face of the mounting base 23, the pressure guide channel 2a penetrates through the mounting seat 24, and the pressure guide channel 2a penetrates out of the side face of the mounting seat 24.
Example 2:
as shown in fig. 1 to 8, a pressure sensor sealing and pressure stabilizing structure includes a sealed installation cavity, a diaphragm type pressure sensor 25 is disposed in the installation cavity, two pressure pipes 251 are led out of the diaphragm type pressure sensor 25, inner ends of the two pressure pipes 251 are communicated with an inside of the diaphragm type pressure sensor 25, outer ends of the two pressure pipes 251 respectively extend out of the installation cavity, and a pressure transmission medium is filled in the installation cavity, and the pressure transmission medium may be silicone oil.
The pressure balance effect is further improved, the installation cavity is further connected with a pressure balance channel 2b, the inner end of the pressure balance channel 2b is communicated with the installation cavity, and the outer end of the pressure balance channel 2b is connected with any one of the pressure guiding pipes 251 to form the same pressure source.
In a specific implementation, the free ends of the two pressure guiding pipes 251 are respectively connected with a high pressure source and a low pressure source, and the outer end of the pressure balancing channel 2b is connected with the high pressure source.
The mounting cavity is formed in the following way: the device also comprises a pressure guide seat 2 and a sealing cover 3, wherein two drainage channels 2a penetrate through the pressure guide seat 2, one end of each drainage channel 2a is an inlet, and the other end of each drainage channel 2a is an outlet; the sealing cover 3 is buckled on the pressure guiding seat 2 and sealed with the pressure guiding seat, and a space between the sealing cover 3 and the pressure guiding seat 2 forms the installation cavity;
the outlet end of the drainage channel 2a is communicated with the installation cavity, the inlet end of the drainage channel 2a penetrates out of the pressure guide seat 2, the two pressure guide pipes 251 are respectively communicated with the outlet ends of the two drainage channels 2a, and the outer wall of each pressure guide pipe 251 is sealed with the inner wall of the drainage channel 2 a.
The inlet ends of the two pressure guide channels 2a and the outer end of the pressure balance channel 2b are respectively provided with an isolation diaphragm 26, and the edge of the isolation diaphragm 26 is sealed and fixed with the pressure guide seat 2 at the corresponding part; the pressure guide channel 2a, the pressure guide pipe 251 and the diaphragm type pressure sensor 25 are communicated, the pressure balance channel 2b is communicated with the mounting cavity, and the inside and the outside of the diaphragm type pressure sensor 25 are isolated from each other; the pressure transmission medium is filled in the pressure leading channel 2a, the pressure leading pipe 251, the diaphragm pressure sensor 25, the pressure balance channel 2b and the installation cavity.
The pressure guide seat 2 comprises an installation base 23 and a sensor installation seat 24, the installation base 23 is in a cubic shape, the sensor installation seat 24 is fixed on the upper end face of the installation base 23, and the sealing cover 3 is buckled on the sensor installation seat 24 and sealed with the sensor installation seat 24; the inlet ends of the two pressure guide channels 2a respectively penetrate out from two opposite side surfaces of the mounting base 23, and the outlet ends of the two pressure guide channels 2a respectively penetrate out from the upper end surface of the sensor mounting base 24;
the pressure balance channel 2b is vertically arranged, the upper end of the pressure balance channel 2b penetrates out of the sensor mounting seat 24 upwards, and the lower end of the pressure balance channel 2b penetrates out of the mounting base 23 downwards.
A steering counter bore 2c is arranged on the bottom surface of the mounting base 23 around the outer end port of the pressure balance channel 2b, an isolation diaphragm 26 for plugging the outer end port of the pressure balance channel 2b is arranged at the bottom of the steering counter bore 2c, a plugging plug 27 is fixedly arranged at the outer end of the steering counter bore 2c, a balance pressure taking area is formed between the plugging plug 27 and the corresponding isolation diaphragm 26, a balance pressure taking hole 2d penetrates through the hole wall of the steering counter bore 2c, the inner end of the balance pressure taking hole 2d is communicated with the balance pressure taking area, the outer end of the balance pressure taking hole 2d penetrates through the mounting base 23, and the outer end of the balance pressure taking hole 2d and the inlet end of any pressure guide channel 2a are positioned on the same side surface of the mounting base 23.
The sensor mounting seat 24 includes a horizontally placed docking tray 241, a lower surface of the docking tray 241 is fixed to an upper end surface of the mounting base 23, a docking seat 242 is fixed to an upper surface of the docking tray 241, an edge of the docking tray 241 extends outward and exceeds the docking seat 242, a socket screw is arranged on an outer wall of the docking seat 242, the sealing cover 3 is screwed on the docking seat 242, the sealing cover 3 abuts against the docking tray 241 and is welded and sealed, and an outlet end of the pressure guide channel 2a penetrates out of the upper end surface of the docking seat 242;
the side where the inlet end port of the pressure guiding channel 2a is located on the mounting base 23 is a mounting side, the mounting side is vertically arranged, the outlet end ports of the two pressure guiding channels 2a are located at the same horizontal height, the included angle between the projection of the connecting line of the outlet end ports of the two pressure guiding channels 2a on the horizontal plane and the mounting side is alpha, and alpha is 45 degrees.
A diaphragm mounting seat 21 is arranged on the pressure guide seat 2 around the inlet end of the pressure guide channel 2a, a pressure guide pipe socket 22 is arranged on the butt joint seat 242 around the outlet end of the pressure guide channel 2a, the outer end of the pressure guide pipe 251 is inserted into the corresponding pressure guide pipe socket 22, and the space between the outer wall of the pressure guide pipe 251 and the pressure guide pipe socket 22 is sealed;
the diaphragm mounting seat 21 is an annular welding boss, a pressure guiding area is defined by the interior of the diaphragm mounting seat 21, the inlet end ports of the pressure guiding channels 2a are respectively positioned in the corresponding pressure guiding areas, and the annular welding boss is welded, fixed and sealed with the edge of the corresponding isolation diaphragm 26;
the pressure guide channel 2a comprises a vertical flow guide section 2a1 and a horizontal flow guide section 2a2, the upper end of the vertical flow guide section 2a1 penetrates out of the upper end face of the butt joint seat 242, the lower end of the vertical flow guide section 2a1 is communicated with the inner end of the horizontal flow guide section 2a2, and the outer end of the horizontal flow guide section 2a2 penetrates out of the side face of the installation base 23.
As shown in fig. 9 and fig. 10, the pressure measuring device further includes two pressure measuring seats 1 disposed opposite to each other, the pressure guide seat 2 is disposed between the two pressure measuring seats 1, inlet ends of the two pressure guide channels 2a face the two pressure measuring seats 1, the two pressure measuring seats 1 are respectively penetrated through the pressure measuring channels 1a, inner ends of the pressure measuring channels 1a are in butt joint with the corresponding inlet ends of the pressure guide channels 2a, and outer ends of the pressure measuring channels 1a penetrate through the corresponding pressure measuring seats 1; the two pressure taking seats 1 correspond to the two installation side surfaces one by one, an assembly plane is arranged on the pressure taking seat 1 corresponding to the installation side surface of the pressure taking seat, the assembly plane is attached to and sealed with the corresponding installation side surface, a pressure taking area 1b is arranged on the assembly plane corresponding to the pressure leading area, the inner end of the pressure taking channel 1a is communicated with the pressure taking area 1b, and the pressure taking area 1b is in butt joint with the corresponding pressure leading area; the pressure taking seat 1 is further provided with a pressure taking branch hole 1c, the other end of the pressure taking branch hole 1c is communicated with the pressure taking area 1b, and the balance pressure taking hole 2d is communicated with the pressure taking branch hole 1c on any one pressure taking seat 1.
Two first negative pressure oil injection holes are further formed in the pressure guiding seat 2, two first negative pressure oil injection holes penetrate through the sealing cover 3 and correspond to the two pressure guiding areas respectively, one end of each first negative pressure oil injection hole penetrates out of the pressure guiding seat 2, the other end of each first negative pressure oil injection hole is communicated with the corresponding pressure guiding area, a second negative pressure oil injection hole 3a penetrates through the sealing cover 3, and the inside and the outside of the sealing cover 3 are communicated through the second negative pressure oil injection hole 3 a;
in the structure, except for the sealing cover 3, other parts are firstly installed into a whole, the two first negative pressure oil injection holes are vacuumized and kept consistent in vacuum degree, then silicon oil is injected into the two first negative pressure oil injection holes by switching valves of an air path and an oil path, the silicon oil is filled in the pressure guide area, the pressure guide channel 2a, the pressure guide pipe 251 and the diaphragm type pressure sensor 25, and then a first oil plug is arranged in the first negative pressure oil injection hole for plugging; and then observing whether oil leaks or not, if no oil leaks, assembling the sealing cover 3, sealing, vacuumizing through the second negative pressure oil injection hole 3a, injecting silicon oil into the second negative pressure oil injection hole 3a through a valve for switching an air path and an oil path, filling the inside (an installation cavity) of the sealing cover 3 and the pressure balance channel 2b with the silicon oil, and finally arranging a second oil plug 32 in the negative pressure oil injection hole 3a for plugging.
Finally, it should be noted that the above 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 the scope of the present invention.
Claims (5)
1. A differential pressure transmitter sensor mounting mechanism is characterized in that: the pressure sensor comprises a sensor mounting seat (24) and a diaphragm type pressure sensor (25), wherein a placing counter bore and two pressure guiding pipe sockets (22) are arranged on the sensor mounting seat (24), the placing counter bore is positioned between the two pressure guiding pipe sockets (22), and pressure guiding channels (2a) penetrate through the sensor mounting seat (24) corresponding to the two pressure guiding pipe sockets (22) respectively;
the lower portion of the diaphragm type pressure sensor (25) is suspended in the placing counter bore, two pressure guiding pipes (251) are led out of the diaphragm type pressure sensor (25), the free ends of the two pressure guiding pipes (251) are respectively inserted into the two pressure guiding pipe sockets (22), and the pressure guiding pipes (251) are communicated with the corresponding pressure guiding channels (2 a).
2. The differential pressure transmitter sensor mounting mechanism of claim 1, wherein: the sensor mounting seat (24) comprises a horizontally-arranged butt joint disc (241), a butt joint seat (242) is fixed on the upper surface of the butt joint disc (241), the edge of the butt joint disc (241) extends outwards and exceeds the butt joint seat (242), a socket thread is arranged on the outer wall of the butt joint seat (242), and the pressure guiding pipe socket (22) is located on the upper end face of the butt joint seat (242).
3. The differential pressure transmitter sensor mounting mechanism of claim 1, wherein: the placing counter bore comprises two opposite arched hole walls and an arched hole bottom, and the arched edges of the two arched hole walls are respectively connected with the two arched side edges of the arched hole bottom.
4. The differential pressure transmitter sensor mounting mechanism of claim 1, 2 or 3, wherein: the pressure guiding pipe socket (22) comprises a socket body, a jack penetrates through the socket body, and the jack is communicated with the outlet end of the pressure guiding channel (2 a).
5. The differential pressure transmitter sensor mounting mechanism of claim 1, 2 or 3, wherein: the sensor mounting seat is characterized in that a mounting base (23) is further arranged below the sensor mounting seat (24), the mounting base (23) is in a cube shape, the sensor mounting seat (24) is fixed on the upper end face of the mounting base (23), the pressure guide channel (2a) penetrates through the mounting seat (24), and the pressure guide channel (2a) penetrates out of the side face of the mounting seat (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023240703.1U CN214373071U (en) | 2020-12-29 | 2020-12-29 | Differential pressure transmitter sensor mounting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023240703.1U CN214373071U (en) | 2020-12-29 | 2020-12-29 | Differential pressure transmitter sensor mounting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214373071U true CN214373071U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023240703.1U Active CN214373071U (en) | 2020-12-29 | 2020-12-29 | Differential pressure transmitter sensor mounting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214373071U (en) |
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2020
- 2020-12-29 CN CN202023240703.1U patent/CN214373071U/en active Active
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