CN210513523U - Pressure transmitter - Google Patents
Pressure transmitter Download PDFInfo
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- CN210513523U CN210513523U CN201921581535.7U CN201921581535U CN210513523U CN 210513523 U CN210513523 U CN 210513523U CN 201921581535 U CN201921581535 U CN 201921581535U CN 210513523 U CN210513523 U CN 210513523U
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Abstract
The utility model discloses a pressure transmitter relates to instrument and meter technical field, include: a transmitter body; the pressure joint is arranged at one end part of the transmitter body, and a pressure guide hole is formed in the pressure joint; a buffer screw disposed at an inner end position of the pressure joint; a pressure core disposed at a distal end of the cushion screw; a seal assembly disposed between the pressure core and the pressure fitting; one end of the connecting pipe is connected with one end of the pressure joint; an electrical connector; the circuit board assembly solves the technical problems that the pressure transmitter in the prior art is poor in moisture resistance, prone to failure in a humid environment and complex in assembly process flow in production, improves the reliability of the transmitter, can adapt to the humid environment, can resist condensate water, can measure small-range gauge pressure and is not prone to leakage.
Description
Technical Field
The utility model belongs to the technical field of instrument and meter, especially, relate to a pressure transmitter.
Background
When a common pressure transmitter is used for pressure measurement, due to the water hammer effect of liquid in a pipeline, even if the pressure in the pipeline does not exceed the allowable upper limit of the transmitter, the transmitter can be damaged when the pressure is changed severely. When the ordinary pressure transmitter is used for pressure measurement, two sealing schemes are selected: all welded or with sealing rings. The all-welded structure has no sealing ring, so that no leakage risk exists in a pressure allowable range. In the structure with the sealing ring, because the deformation of the sealing ring is different when the pressure changes, certain leakage is possible.
When ordinary pressure transmitter is carrying out pressure measurement, the negative pressure chamber of small-range gauge pressure core body needs to communicate with the atmosphere, and the scheme of selection has two kinds: the circuit is filled with glue and an air duct is used or the circuit is not filled with glue. In the scheme of glue filling and air duct use of the circuit, the production is troublesome, and care is taken that the glue cannot flow to the gauge pressure core body. In the non-glue-pouring scheme of the circuit, the moisture resistance of the circuit is poor, and the circuit is easy to break down in a humid environment. In the scheme of no glue pouring of the circuit, three-proofing paint can be selectively coated to enhance the moisture resistance, but the assembly process flow in production is complex, and the operation is difficult when the three-proofing paint is coated on welding spots.
Disclosure of Invention
The embodiment of the application solves the technical problems that a pressure transmitter in the prior art is poor in moisture resistance, easy to break down in a humid environment and complex in assembly process flow in production, achieves the reliability of improving the transmitter, can adapt to the humid environment, can resist condensed water, can measure small-range gauge pressure and is not easy to leak.
An embodiment of the utility model provides a pressure transmitter, include: a transmitter body; the pressure joint is arranged at one end part of the transmitter body, and a pressure guide hole is formed in the pressure joint; a buffer screw disposed at an inner end position of the pressure joint; the pressure core body is arranged at the tail end of the buffer screw, and a measured medium enters through the pressure guide hole and passes through the buffer screw so that pressure is exerted on the pressure core body; a seal assembly disposed between the pressure core and the pressure fitting; one end of the connecting pipe is connected with one end of the pressure joint; the electric connector is connected with one end, far away from the pressure joint, of the connecting pipe and is connected with the pressure core body through a lead, and an accommodating space is formed inside the electric connector; the circuit board assembly is arranged in the accommodating space and is encapsulated by pouring sealant.
Preferably, the seal assembly comprises: the first sealing ring is arranged between the top end of the pressure core body and the tail end of the pressure joint; and the second sealing ring is arranged between the inner side wall of the pressure core body and the outer side wall of the pressure joint.
Preferably, the method further comprises the following steps: the first check ring is arranged between the first sealing ring and the tail end of the pressure joint; and the second retaining ring is arranged between the second sealing ring and the outer side wall of the pressure joint.
Preferably, the circuit board assembly includes: the first circuit board is arranged at a first position in the accommodating space; the second circuit board is arranged at a second position in the accommodating space.
Preferably, the second circuit board is arranged in parallel with the first circuit board, and the first position is different from the second position.
Preferably, the method further comprises the following steps: the air hole is formed in the electric connector, and the waterproof breathable film or the waterproof breathable plug is accommodated in the air hole.
Preferably, the welding points on the pressure core body are coated with insulating glue.
Preferably, the method further comprises the following steps: and the grounding copper sheet is arranged at the edge of the outer side of one end, close to the pressure core body, of the electric connector.
Preferably, the method further comprises the following steps: a gasket disposed between a distal end of the pressure core and the nipple inner wall.
Preferably, the method further comprises the following steps: a third seal ring disposed on the electrical connector; and the fourth sealing ring is arranged between the inner wall of one end of the connecting pipe close to the pressure joint and the outer side of the pressure joint.
The embodiment of the utility model provides an in above-mentioned one or more technical scheme, have following one or more technological effect at least:
the embodiment of the utility model provides a pressure transmitter, include: a transmitter body; the pressure joint is arranged at one end part of the transmitter body, and a pressure guide hole is formed in the pressure joint; a buffer screw disposed at an inner end position of the pressure joint; the pressure core body is arranged at the tail end of the buffer screw, and a measured medium enters through the pressure guide hole and passes through the buffer screw so that pressure is exerted on the pressure core body; a seal assembly disposed between the pressure core and the pressure fitting; one end of the connecting pipe is connected with one end of the pressure joint; the electric connector is connected with one end, far away from the pressure joint, of the connecting pipe and is connected with the pressure core body through a lead, and an accommodating space is formed inside the electric connector; the circuit board assembly, circuit board assembly sets up in the accommodation space, just circuit board assembly adopts the pouring sealant embedment to it is poor to have solved the pressure transmitter humidity resistance among the prior art, breaks down easily in humid environment, assembles the technical problem that the technology flow is complicated in the production, has reached the reliability that improves the changer, can adapt to humid environment, can anti comdenstion water, can measure the technical effect that small-scale gauge pressure just is difficult for leaking.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
Fig. 1 is a schematic structural diagram of a pressure transmitter according to an embodiment of the present invention.
Description of reference numerals: the pressure joint comprises a pressure joint 1, a first sealing ring 2, a first retainer ring 3, a second retainer ring 4, a second sealing ring 5, a pressure core body 6, a gasket 7, a connecting pipe 8, a first circuit board 9, a third sealing ring 10, an electric connector 11, a waterproof breathable film 12, a second circuit board 13, a pouring sealant 14, a grounding copper sheet 15, a buffer screw 16 and a fourth sealing ring 17.
Detailed Description
The embodiment of the application provides a pressure transmitter, and solves the technical problems that the pressure transmitter in the prior art is poor in moisture resistance, easy to break down in a humid environment and complex in assembly process flow in production.
The embodiment of the utility model provides an in technical scheme, the general thinking is as follows:
the embodiment of the utility model provides a pair of pressure transmitter, include: a transmitter body; the pressure joint is arranged at one end part of the transmitter body, and a pressure guide hole is formed in the pressure joint; a buffer screw disposed at an inner end position of the pressure joint; the pressure core body is arranged at the tail end of the buffer screw, and a measured medium enters through the pressure guide hole and passes through the buffer screw so that pressure is exerted on the pressure core body; a seal assembly disposed between the pressure core and the pressure fitting; one end of the connecting pipe is connected with one end of the pressure joint; the electric connector is connected with one end, far away from the pressure joint, of the connecting pipe and is connected with the pressure core body through a lead, and an accommodating space is formed inside the electric connector; the circuit board assembly is arranged in the accommodating space and encapsulated by the potting adhesive, so that the reliability of the transmitter is improved, the transmitter can adapt to a humid environment, can resist condensed water, can measure small-range gauge pressure and is not easy to leak.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
Referring to fig. 1, the present embodiment provides a pressure transmitter, including: the pressure transmitter comprises a transmitter body and a pressure connector 1, wherein the pressure connector 1 is arranged at one end part of the transmitter body, and a pressure leading hole is formed in the pressure connector 1.
Particularly, the changer body is this pressure transmitter's whole appearance structure, can convert pneumatic signal or electric signal with pressure through this pressure transmitter to reach control and teletransmission's purpose, pressure joint 1 is the part that is arranged in this pressure transmitter for inserting pressure, and it installs the tip at the changer body, still has seted up a recess in pressure joint 1's inside simultaneously, and this recess is promptly for drawing the pressure hole, is one-step type shape in pressure joint 1's the outside simultaneously, that is to say, pressure joint 1's the outside including a plurality of bosss.
The pressure transmitter further includes: a cushion screw 16 and a pressure core 6, the cushion screw 16 being provided at an inner end position of the pressure joint 1; the pressure core 6 is arranged at the end of the buffer screw 16, wherein the medium to be measured enters through a pressure-guiding hole and passes through the buffer screw 16, so that pressure is exerted on the pressure core 6.
Furthermore, the welding points on the pressure core body 6 are coated with insulating glue.
Specifically, the buffer screw 16 is a component for achieving the buffering purpose, the buffer screw 16 is installed at the central position of the end of the pressure joint 1, and the buffer screw 16 is located inside the pressure joint 1, so that the buffer screw 16 and the pressure guiding hole of the pressure joint 1 have the same central axis, and further, the pressure core 6 is installed at the tail end of the buffer screw 16, wherein the central position of the pressure core 6 is a hollow structure, so that the buffer screw 16 can be accommodated in the hollow part, in other words, the buffer screw 16 is installed inside the pressure joint 1, and the pressure core 6 is sleeved outside the end of the pressure joint 1. When the pressure transmitter is used for pressure measurement, the medium to be measured enters from the pressure connection 1, passes the buffer screw 16 and exerts a pressure on the pressure core 6. The buffer screw 16 can reduce the impact on the transmitter when the flow is changed violently, thereby relieving the problem of transmitter damage caused by the water hammer effect when the transmitter is used for liquid medium pipeline pressure, and greatly improving the reliability of the transmitter. Further, the surface of the pressure core 6 (except for the welding points) is subjected to an insulation treatment, and the welding points on the pressure core 6 are subjected to a waterproofing treatment in the assembly. Ensuring that even if moisture enters the transmitter interior, transmitter performance is not affected. Namely, the purpose of moisture resistance is achieved by coating waterproof glue on the welding spot of the pressure core body 6.
The pressure transmitter further includes: a sealing assembly arranged between the pressure core 6 and the pressure joint 1.
Further, the seal assembly includes: the first sealing ring 2 is arranged between the top end of the pressure core body 6 and the tail end of the pressure joint 1; and the second sealing ring 5 is arranged between the inner side wall of the pressure core body 6 and the outer side wall of the pressure joint 1, and the second sealing ring 5 is arranged between the inner side wall of the pressure core body and the outer side wall of the pressure joint 1.
Specifically, the seal assembly is a component that plays a role of sealing in the pressure transmitter, and in the present embodiment, the seal assembly is installed between the pressure core 6 and the pressure joint 1. Specifically, the method comprises the following steps: the seal assembly includes: the sealing device comprises a first sealing ring 2 and a second sealing ring 5, wherein the first sealing ring 2 is installed between the upper surface of a pressure core body 6 and the tail end step structure of the pressure joint 1, and the second sealing ring 5 is installed between the inner side wall of the pressure core body 6 and the outer side wall of the tail end of the pressure joint. When this changer is used for pressure measurement, the measured medium need pass through second sealing washer 5, again through first sealing washer 2, just can take place to leak, consequently, through the installation and the design of first sealing washer 2 and second sealing washer 5, has improved the sealing performance of changer, simultaneously also greatly reduced the possibility of leaking.
The pressure transmitter further includes: and one end of the connecting pipe 8 is connected with one end of the pressure joint 1.
The pressure transmitter further includes: the electric connector 11 is connected with one end, far away from the pressure joint 1, of the connecting pipe 8, the electric connector 11 is connected with the pressure core body 6 through a conducting wire, and an accommodating space is formed inside the electric connector 11.
Specifically, the connection pipe 8 is a component for connecting the pressure connector 1 and the electrical connector 11 in the pressure transmitter, that is, one end of the connection pipe 8 is connected to the pressure connector 1, and the other end of the connection pipe 8 is connected to the electrical connector 11. Further, the electrical connector 11 is connected to the pressure core 6 by a wire, and a potting compound 14 is used for potting at a position where the wire is connected to the pressure core 6. The electrical connector 11 may be a Packard connector. The pressure core 6 and the electrical connector 11 are connected by a wire (a wire with an insulating layer or a flexible circuit board). All live parts are protected, and the performance of the transmitter is not affected even if moisture enters the transmitter. Meanwhile, the electric connector 11 in the embodiment is specially designed for the application of resisting condensed water, and the condensed water resistance of the gauge pressure type transmitter can be obviously improved.
The pressure transmitter further includes: and the circuit board assembly is arranged in the accommodating space and is encapsulated by pouring sealant 14.
Further, the circuit board assembly includes: the first circuit board 9, the first circuit board 9 is arranged at a first position in the accommodating space; the second circuit board 13 is arranged at a second position in the accommodating space, the second circuit board 13 is arranged in parallel with the first circuit board 9, and the first position is different from the second position.
Specifically, the electrical connector 11 has a certain accommodating space therein, so that the circuit board assembly can be mounted in the accommodating space. The circuit board assembly in this embodiment includes: first circuit board 9 and second circuit board 13, first circuit board 9 and second circuit board 13 are parallel to each other and set up in the inside accommodation space of electric connector 11, and have certain spacing distance between the two, and first circuit board 9 and second circuit board 13 pass through the wire and connect to first circuit board 9 and second circuit board 13 all adopt pouring sealant 14 to carry out the embedment. Therefore, with the electrical connector 11 designed for preventing condensed water in the present embodiment, the first circuit board 9 and the second circuit board 13 can be installed inside the electrical connector 11 and encapsulated by the potting compound 14, and the solder points on the pressure core 6 are coated with the insulating compound, so that moisture has no influence on the circuit. And the pressure core body 6 is connected with the circuit board assembly through a lead (a lead with an insulating layer or a flexible circuit board). All live parts are protected to ensure that even moisture enters the transmitter interior, no effect is caused. That is, the inner space of the electrical connector 11 is large, so that the signal conditioning circuit can be conveniently installed, and after the circuit is installed, the insulating pouring sealant can be used for pouring and sealing, so as to achieve the purpose of water and moisture prevention for the circuit.
Further, the pressure transmitter further includes: the first check ring 3 is arranged between the first sealing ring 2 and the tail end of the pressure joint 1; and the second retaining ring 4 is arranged between the second sealing ring 5 and the outer side wall of the pressure joint 1.
Specifically, the first retainer ring 3 is installed between the outer side of the first seal ring 2 and the end of the pressure joint 1; second retaining ring 4 is installed between second sealing washer 5 and the lateral wall of pressure joint 1, can further promotion this pressure transmitter's sealing performance through second retaining ring 3 and second retaining ring 4.
Further, the pressure transmitter further includes: the air hole is formed in the electric connector 11, and the waterproof breathable film 12 or the waterproof breathable plug is accommodated in the air hole.
Particularly, the electric connector 11 is provided with the air holes, and then the waterproof breathable film 12 or the waterproof breathable plug is pasted in the air holes, so that the balance between the inside of the transmitter and the external pressure is ensured, a certain waterproof and dustproof effect is achieved, and the electric connector can be used for testing the small-range gauge pressure. When this pressure transmitter is used for pressure measurement, inside external moisture can get into the changer through dustproof and waterproof ventilated membrane 12, through dustproof and waterproof ventilated membrane 12 and structure cooperation on every side like this, can block dust and drop of water entering.
Further, the pressure transmitter further includes: and the grounding copper sheet 15 is arranged at the outer edge of one end of the electric connector 11 close to the pressure core body 6.
Further, the pressure transmitter further includes: a gasket 7, said gasket 7 being arranged between the end of said pressure core 6 and the inner wall of said nipple 8.
Further, the pressure transmitter further includes: a third sealing ring 10, wherein the third sealing ring 10 is arranged on the electric connector 11; and a fourth sealing ring 17, wherein the fourth sealing ring 17 is arranged between the inner wall of one end of the connecting pipe 8 close to the pressure joint 1 and the outer side of the pressure joint 1.
Specifically, the pressure transmitter further includes: the ground connection copper sheet 15, packing ring 7, third sealing washer 10 and fourth sealing washer 17, specifically: the grounding copper sheet 15 is positioned at one end part of the electric connector 11, namely the outer edge of one end of the electric connector 11 close to the pressure core body 6; the gasket 7 is arranged between the tail end of the pressure core body 6 and the inner wall of the connecting pipe 8; the third sealing ring 10 is installed on the electrical connector 11, and the fourth sealing ring 17 is installed at one end of the connection pipe 8 close to the pressure joint 1 and is located between the inner wall of the connection pipe 8 and the outer wall of the pressure joint 1.
Therefore, the electric connector in the pressure transmitter in the embodiment has a large inner cavity, can completely install the circuit board inside, and ensures the anti-condensation performance through glue filling. The electric connector is provided with the air holes, and the waterproof breathable film or the waterproof breathable plug is pasted in the air holes, so that the balance between the inside of the transmitter and the external pressure is ensured, a certain waterproof and dustproof effect can be realized, and the electric connector can be used for testing the small-range gauge pressure. The purpose of moisture prevention is achieved by coating waterproof glue on the welding spots of the pressure core body. Therefore, the pressure transmitter which can adapt to a humid environment, can resist condensed water and can measure gauge pressure with a small range and is not easy to leak is provided.
The embodiment of the utility model provides an in above-mentioned one or more technical scheme, have following one or more technological effect at least:
the embodiment of the utility model provides a pressure transmitter, include: a transmitter body; the pressure joint is arranged at one end part of the transmitter body, and a pressure guide hole is formed in the pressure joint; a buffer screw disposed at an inner end position of the pressure joint; the pressure core body is arranged at the tail end of the buffer screw, and a measured medium enters through the pressure guide hole and passes through the buffer screw so that pressure is exerted on the pressure core body; a seal assembly disposed between the pressure core and the pressure fitting; one end of the connecting pipe is connected with one end of the pressure joint; the electric connector is connected with one end, far away from the pressure joint, of the connecting pipe and is connected with the pressure core body through a lead, and an accommodating space is formed inside the electric connector; the circuit board assembly, circuit board assembly sets up in the accommodation space, just circuit board assembly adopts the pouring sealant embedment to it is poor to have solved the pressure transmitter humidity resistance among the prior art, breaks down easily in humid environment, assembles the technical problem that the technology flow is complicated in the production, has reached the reliability that improves the changer, can adapt to humid environment, can anti comdenstion water, can measure the technical effect that small-scale gauge pressure just is difficult for leaking.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A pressure transmitter, comprising:
a transmitter body;
the pressure joint is arranged at one end part of the transmitter body, and a pressure guide hole is formed in the pressure joint;
a buffer screw disposed at an inner end position of the pressure joint;
the pressure core body is arranged at the tail end of the buffer screw, and a measured medium enters through the pressure guide hole and passes through the buffer screw so that pressure is exerted on the pressure core body;
a seal assembly disposed between the pressure core and the pressure fitting;
one end of the connecting pipe is connected with one end of the pressure joint;
the electric connector is connected with one end, far away from the pressure joint, of the connecting pipe and is connected with the pressure core body through a lead, and an accommodating space is formed inside the electric connector;
the circuit board assembly is arranged in the accommodating space and is encapsulated by pouring sealant.
2. The pressure transmitter of claim 1 wherein the seal assembly comprises:
the first sealing ring is arranged between the top end of the pressure core body and the tail end of the pressure joint;
and the second sealing ring is arranged between the inner side wall of the pressure core body and the outer side wall of the pressure joint.
3. The pressure transmitter of claim 2, further comprising:
the first check ring is arranged between the first sealing ring and the tail end of the pressure joint;
and the second retaining ring is arranged between the second sealing ring and the outer side wall of the pressure joint.
4. The pressure transmitter of claim 1 wherein the circuit board assembly comprises:
the first circuit board is arranged at a first position in the accommodating space;
the second circuit board is arranged at a second position in the accommodating space.
5. The pressure transmitter of claim 4 wherein the second circuit board is disposed parallel to the first circuit board and wherein the first position is different from the second position.
6. The pressure transmitter of claim 1 further comprising:
the air hole is formed in the electric connector, and the waterproof breathable film or the waterproof breathable plug is accommodated in the air hole.
7. The pressure transmitter of claim 1 wherein the weld points on the pressure core are coated with an insulating glue.
8. The pressure transmitter of claim 1 further comprising:
and the grounding copper sheet is arranged at the edge of the outer side of one end, close to the pressure core body, of the electric connector.
9. The pressure transmitter of claim 1 further comprising:
a gasket disposed between a distal end of the pressure core and the nipple inner wall.
10. The pressure transmitter of claim 1 further comprising:
a third seal ring disposed on the electrical connector;
and the fourth sealing ring is arranged between the inner wall of one end of the connecting pipe close to the pressure joint and the outer side of the pressure joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921581535.7U CN210513523U (en) | 2019-09-20 | 2019-09-20 | Pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921581535.7U CN210513523U (en) | 2019-09-20 | 2019-09-20 | Pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210513523U true CN210513523U (en) | 2020-05-12 |
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ID=70571487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921581535.7U Active CN210513523U (en) | 2019-09-20 | 2019-09-20 | Pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210513523U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114383771A (en) * | 2022-01-13 | 2022-04-22 | 北京卫星环境工程研究所 | Space vacuum sensor suitable for vacuum and complex electromagnetic environment |
-
2019
- 2019-09-20 CN CN201921581535.7U patent/CN210513523U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114383771A (en) * | 2022-01-13 | 2022-04-22 | 北京卫星环境工程研究所 | Space vacuum sensor suitable for vacuum and complex electromagnetic environment |
| CN114383771B (en) * | 2022-01-13 | 2024-01-19 | 北京卫星环境工程研究所 | Space vacuum sensor suitable for vacuum and complex electromagnetic environment |
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