CN113091985A - Wide-range miniaturized pressure transmitter - Google Patents
Wide-range miniaturized pressure transmitter Download PDFInfo
- Publication number
- CN113091985A CN113091985A CN202110432771.8A CN202110432771A CN113091985A CN 113091985 A CN113091985 A CN 113091985A CN 202110432771 A CN202110432771 A CN 202110432771A CN 113091985 A CN113091985 A CN 113091985A
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- Prior art keywords
- shell
- circular groove
- core body
- wire
- face
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
- G01L7/08—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the flexible-diaphragm type
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
- G01L7/022—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges constructional details, e.g. mounting of elastically-deformable gauges
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to the technical field of pressure sensing measurement, in particular to a wide-range miniaturized pressure transmitter.A butt joint is arranged and processed at the front end port of a shell, and a connecting thread is arranged and processed on the outer side wall of the butt joint; the front end of the shell is provided with a liquid guide hole in a penetrating way; the inside of the shell is provided with a mounting platform; the core body is fixedly arranged on the mounting table; the front end face of the core body is fixedly provided with a diaphragm; the front end face of the diaphragm is fixedly provided with a pressure ring; the rear end surface of the core body is provided with an upper circular groove; through holes are formed at the bottom of the upper circular groove at intervals in a penetrating manner; sintered glass is fixedly arranged inside the through hole; the bottom of the upper circular groove is also provided with an oil inlet in a penetrating way; the oil inlet end of the oil inlet hole is provided with a sealing steel ball; the front end surface of the core body is provided with a lower circular groove; the invention can provide a large-range miniaturized pressure transmitter which has the advantages of small and compact structural design, quick and simple positioning and installation, wide detectable range and reliable and stable operation.
Description
Technical Field
The invention belongs to the related technical field of pressure measurement equipment, and particularly relates to a wide-range miniaturized pressure transmitter.
Background
The pressure transmitter is the most common sensor in industrial practice, is widely applied to various industrial self-control environments, and relates to various industries such as water conservancy and hydropower, railway transportation, intelligent buildings, aerospace, military industry, pipelines and the like; the pressure transmitter is a device for converting pressure into pneumatic signal or electric signal to control and remotely transmit, and can convert physical pressure parameters of gas, liquid and the like sensed by a load cell sensor into standard electric signals to be supplied to secondary instruments such as an indication alarm instrument, a recorder and a regulator to carry out measurement, indication and process regulation. The transducer in the existing industry has a small range of measurement below 100KPa, and a common range of measurement is 100KPa to 7MPa, but the size of the equipment is greatly increased when the requirement of a larger range is realized, so that the equipment with a range of measurement larger than 7MPa and a more compact and small volume is required to be developed to meet the market requirement; in addition, the common pressure transmitter is inconvenient to connect and fix, cannot meet the installation and connection requirements of different use scenes, and causes the problems of narrow application range and difficult installation of products; in addition, after the internal circuit of the equipment in the industry is led out, the winding damage of the circuit can be caused normally without disorder, and the stable work of the product is not facilitated.
Disclosure of Invention
The invention aims to provide a large-range miniaturized pressure transmitter which is small and compact in structural design, quick and simple in positioning and installation, large in detectable range and reliable and stable in operation.
In order to achieve the purpose, the invention provides the following technical scheme: a wide-range miniaturized pressure transmitter comprises a shell, butt joints, connecting threads, a liquid guide hole, a mounting table, a core body, a diaphragm, a pressure ring, an upper circular groove, a through hole, sintered glass, a lead, an oil inlet hole, a sealing steel ball, a lower circular groove, a ceramic pad, a mounting cavity, an induction chip, a wire inlet hole and a gold wire, wherein the butt joints are formed and processed at the front end ports of the shell, and the connecting threads are formed and processed at the outer side walls of the butt joints; the front end of the shell is provided with a liquid guide hole in a penetrating way; an installation table is machined in the shell; a core body is fixedly arranged on the mounting table; the front end face of the core body is fixedly provided with a diaphragm; the front end face of the diaphragm is fixedly provided with a pressure ring; the rear end surface of the core body is provided with an upper circular groove; through holes are formed in the bottom of the upper circular groove at intervals in a penetrating manner; sintered glass is fixedly arranged inside the through hole; a lead is arranged in the sintered glass in a penetrating way; the bottom of the upper circular groove is also provided with an oil inlet in a penetrating way; the oil inlet end of the oil inlet hole is provided with a sealing steel ball; the front end surface of the core body is provided with a lower circular groove; a ceramic pad is arranged inside the lower circular groove; the front end face of the ceramic pad is provided with a mounting cavity; a pressure sensing chip is embedded and mounted in the mounting cavity; the front end surface of the ceramic pad is also provided with wire inlet holes at intervals in a through way; the front end of the lead is positioned in the lead-in hole; and a gold wire is connected and installed between the lead and the pressure sensing chip.
As a further improvement of the invention, the outermost outside diameter dimension of the core is no greater than 14.3 mm.
As a further improvement of the invention, the shell is integrally cast by metal materials, and the side walls of the shell are symmetrically provided with magnetic stripes.
As a further improvement of the invention, the side wall of the shell is also symmetrically and fixedly provided with slideways; a sliding groove is formed in the sliding way; the upper end and the lower end in the sliding chute are provided with an upper clamping plate and a lower clamping plate; and a tensioning rubber band is sleeved between the upper clamping plate and the lower clamping plate.
As a further improvement of the invention, the upper end of the shell is connected with an adjusting cap; the side wall of the adjusting cap is provided with knurling patterns.
As a further improvement of the invention, the upper end face of the shell is embedded with a wire combing disk; comb wire holes are formed in the side wall of the comb wire disc at intervals in a penetrating mode; the upper end face of the wire combing disc is fixedly provided with a positioning pressure rod; the upper end surface of the shell and the upper surface of the positioning pressure rod are provided with a connecting screw rod in a through connection mode.
Compared with the prior art, the invention has the beneficial effects that: the detectable range of the pressure transmitter in the technical scheme reaches 7MPa to 60MPa, the maximum outer diameter of the core body of the equipment does not exceed 14.3 mm, the range of the core body is large, the size is smaller, the equipment has the capacity of measuring the range in a wide range, the overall quality of the equipment is reduced, manufacturing raw materials are saved, and the technical effect of meeting the requirement of products on large range and realizing the size miniaturization of the equipment is achieved; according to the technical scheme, the upper end part and the lower end part of the core body are respectively provided with the upper circular groove and the lower circular groove, so that subsequent components can be conveniently and quickly placed and positioned and offset can be prevented, the pressure ring, the diaphragm, the ceramic pad and the sintered glass are sequentially arranged from the lower pressure sensing port upwards, the sintered glass on the ceramic pad is led out through a through hole penetrating through the core body through a wire, and the technical effects of reasonable and compact structural arrangement, small matching gaps among the components, quick and accurate assembly and butt joint and small assembly error are achieved; according to the technical scheme, the wire combing disc is arranged on the shell, the wire combing holes are formed in the wire combing disc, and the internal circuit is inserted into the wire combing holes, so that the winding damage of the circuit can be effectively avoided; the wire combing disk is provided with the positioning pressure rod, and the connecting screw rod is arranged between the shell and the positioning pressure rod, so that the wire combing disk can be effectively fixed on the shell through the connecting screw rod, and the wire combing disk is prevented from falling; according to the technical scheme, the adjusting cap is arranged on the shell, the knurling patterns are arranged on the adjusting cap, the adjusting cap can be conveniently grabbed and installed by an operator, and meanwhile, the knurling patterns can increase friction force; according to the technical scheme, the magnetic strips are arranged on the shell, so that the shell can be conveniently adsorbed and mounted; the shell is also provided with a slide way, the slide way is provided with a slide groove, an upper clamping plate, a lower clamping plate and a tensioning rubber band, and the shell can be effectively clamped and installed on external equipment through the matching of the upper clamping plate, the lower clamping plate and the tensioning rubber band; the lower end of the shell is also provided with a butt joint, the butt joint is provided with a connecting thread, and the shell and external equipment can be conveniently installed in a threaded connection mode through the connecting thread; the equipment adopts a diversified butt joint installation structure, so that the application range of the equipment can be effectively improved; this technical scheme casing inside is provided with miniature forced induction chip, is connected with the wire on the forced induction chip, and the forced induction chip can effectually convert the pressure parameter who detects into the signal of telecommunication and go out through the wire transmission like this.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the internal structure of the present invention.
Fig. 3 is an enlarged schematic exploded view of the core of the present invention.
FIG. 4 is a schematic diagram of the front end face structure of the ceramic pad of the present invention.
Fig. 5 is an enlarged structural schematic view of the wire combing plate of the invention.
In the figure: 1. a housing; 2. a butt joint; 3. connecting threads; 4. a drain hole; 5. an installation table; 6. a core body; 7. a membrane; 8. pressing a ring; 9. an upper circular groove; 10. a through hole; 11. sintering glass; 12. a wire; 13. an oil inlet hole; 14. sealing the steel balls; 15. a lower circular groove; 16. a ceramic pad; 17. a mounting cavity; 18. a pressure sensing chip; 19. a wire inlet hole; 20. gold wire; 21. a magnetic strip; 22. a slideway; 23. a chute; 24. an upper splint; 25. a lower splint; 26. tensioning the rubber band; 27. an adjusting cap; 28. rolling patterns; 29. combing and coiling the disc; 30. a comb wire hole; 31. positioning the compression bar; 32. and connecting the screw rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, the present invention provides a technical solution: a large-range miniaturized pressure transmitter comprises a shell 1, wherein a butt joint 2 is arranged and processed at the front end opening of the shell 1, and a connecting thread 3 is arranged and processed on the outer side wall of the butt joint 2; the front end of the shell 1 is provided with a liquid guide hole 4 in a penetrating way; a mounting table 5 is processed in the shell 1; a core body 6 is fixedly arranged on the mounting table 5; the front end face of the core body 6 is fixedly provided with a diaphragm 7; a compression ring 8 is fixedly arranged on the front end face of the diaphragm 7; the rear end surface of the core body 6 is provided with an upper circular groove 9; through holes 10 are formed at the bottom of the upper circular groove 9 at intervals in a penetrating manner; sintered glass 11 is fixedly arranged in the through hole 10; a lead wire 12 is installed inside the sintered glass 11 in a penetrating manner; the bottom of the upper circular groove 9 is also provided with an oil inlet 13 in a penetrating way; the oil inlet end of the oil inlet hole 13 is provided with a sealing steel ball 14; the front end surface of the core body 6 is provided with a lower circular groove 15; a ceramic pad 16 is arranged in the lower circular groove 15; the front end face of the ceramic pad 16 is provided with a mounting cavity 17; a pressure sensing chip 18 is embedded in the mounting cavity 17; the front end surface of the ceramic pad 16 is also provided with wire inlet holes 19 at intervals; the front end of the wire 12 is positioned in the wire inlet hole 19; a gold wire 20 is connected and installed between the lead 12 and the pressure sensing chip; the side wall of the shell 1 is symmetrically provided with magnetic strips 21; the side wall of the shell 1 is also symmetrically and fixedly provided with slideways 22; a chute 23 is processed on the slideway 22; an upper clamping plate 24 and a lower clamping plate 25 are arranged at the upper end and the lower end in the sliding chute 23; a tensioning rubber band 26 is sleeved between the upper clamping plate 24 and the lower clamping plate 25; the upper end of the shell 1 is connected with an adjusting cap 27; the side wall of the adjusting cap 27 is provided with knurling 28; the upper end face of the shell 1 is embedded with a wire combing disk 29; comb wire holes 30 are formed in the side wall of the comb wire disc 29 at intervals in a penetrating mode; the upper end surface of the wire combing disk 29 is fixedly provided with a positioning pressure rod 31; the upper end surface of the shell 1 and the upper surface of the positioning pressure rod 31 are provided with a connecting screw rod 32 in a through connection mode.
When the environment pressure condition of an external medium needs to be detected, the external liquid medium firstly enters the cavity of the shell 1 through the liquid guide hole 4, the liquid medium is in contact with the diaphragm 7, the diaphragm 7 can feel the pressure of the external liquid medium to deform at the moment, then the diaphragm 7 can transmit the deformation parameter feedback to the pressure sensing chip 18, the pressure sensing chip 18 converts the pressure parameter into an electric signal after being processed, the electric signal is transmitted to the lead 12 through the gold wire 20, the lead 12 transmits the electric signal to an external pressure display device to be displayed, and therefore the rapid measurement and display of the pressure parameter are achieved; when equipment meets the service environment that can not directly connect through screw thread butt joint, this equipment can adsorb on outside metal equipment inner wall through magnetic stripe 21, if meet can be convenient for when the outstanding position of centre gripping can also through the cooperation centre gripping of punch holder 24, lower plate 25 and tensioning rubber band 26 on external equipment, also can install on external equipment through the connecting thread butt joint on the butt joint in addition.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a miniaturized pressure transmitter of wide range which characterized in that: the welding device comprises a shell (1), a butt joint (2), connecting threads (3), a liquid guide hole (4), a mounting table (5), a core body (6), a diaphragm (7), a pressing ring (8), an upper circular groove (9), a through hole (10), sintered glass (11), a wire (12), an oil inlet hole (13), a sealing steel ball (14), a lower circular groove (15), a ceramic pad (16), a mounting cavity (17), an induction chip (18), a wire inlet hole (19) and a gold wire (20), wherein the butt joint (2) is formed and processed at the front end opening of the shell (1), and the connecting threads (3) are formed and processed at the outer side wall of the butt joint (2); the front end of the shell (1) is provided with a liquid guide hole (4) in a penetrating way; an installation table (5) is arranged and processed in the shell (1); a core body (6) is fixedly arranged on the mounting table (5); a diaphragm (7) is fixedly arranged on the front end face of the core body (6); a compression ring (8) is fixedly arranged on the front end face of the diaphragm (7); an upper circular groove (9) is formed in the rear end face of the core body (6); through holes (10) are formed at the bottom of the upper circular groove (9) at intervals in a penetrating manner; sintered glass (11) is fixedly arranged in the through hole (10); a lead (12) is mounted in the sintered glass (11) in a penetrating manner; the bottom of the upper circular groove (9) is also provided with an oil inlet hole (13) in a penetrating way; the oil inlet end of the oil inlet hole (13) is provided with a sealing steel ball (14); a lower circular groove (15) is machined in the front end face of the core body (6); a ceramic pad (16) is arranged in the lower circular groove (15); the front end face of the ceramic pad (16) is provided with a mounting cavity (17); a pressure sensing chip (18) is embedded in the mounting cavity (17); the front end surface of the ceramic pad (16) is also provided with wire inlet holes (19) at intervals in a through way; the front end of the lead (12) is positioned in the wire inlet hole (19); and a gold wire (20) is connected and mounted between the lead (12) and the pressure sensing chip.
2. The wide range miniaturized pressure transmitter of claim 1 wherein: the outer diameter of the outermost side of the core body (6) is not more than 14.3 mm.
3. The wide range miniaturized pressure transmitter of claim 1 wherein: the shell (1) is formed by integrally casting metal materials, and the magnetic strips are symmetrically arranged on the side wall of the shell (1).
4. The wide range miniaturized pressure transmitter of claim 1 wherein: the side wall of the shell (1) is also symmetrically and fixedly provided with slideways (22); a sliding chute (23) is formed in the sliding way (22); the upper end and the lower end of the inside of the sliding groove (23) are provided with an upper clamping plate (24) and a lower clamping plate (25); and a tensioning rubber band (26) is sleeved between the upper clamping plate (24) and the lower clamping plate (25).
5. The wide range miniaturized pressure transmitter of claim 1 wherein: the upper end of the shell (1) is connected with an adjusting cap (27); the side wall of the adjusting cap (27) is provided with knurling (28).
6. The wide range miniaturized pressure transmitter of claim 1 wherein: a wire combing disk (29) is embedded in the upper end face of the shell (1); comb wire holes (30) are formed in the side wall of the comb wire coil (29) at intervals in a penetrating manner; the upper end face of the wire combing disc (29) is fixedly provided with a positioning compression bar (31); the upper end surface of the shell (1) is connected with the upper surface of the positioning pressure rod (31) in a penetrating way, and a connecting screw rod (32) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110432771.8A CN113091985B (en) | 2021-04-21 | 2021-04-21 | Wide-range miniaturized pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110432771.8A CN113091985B (en) | 2021-04-21 | 2021-04-21 | Wide-range miniaturized pressure transmitter |
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| Publication Number | Publication Date |
|---|---|
| CN113091985A true CN113091985A (en) | 2021-07-09 |
| CN113091985B CN113091985B (en) | 2022-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110432771.8A Active CN113091985B (en) | 2021-04-21 | 2021-04-21 | Wide-range miniaturized pressure transmitter |
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| Country | Link |
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| CN (1) | CN113091985B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113739987A (en) * | 2021-09-27 | 2021-12-03 | 南京沃天科技股份有限公司 | Self-powered wireless transmission pressure transmitting equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204679205U (en) * | 2015-06-05 | 2015-09-30 | 合肥中亚传感器有限责任公司 | The two damping pressure transmitter of a kind of high withstand voltage binodal |
| CN106768592A (en) * | 2017-02-24 | 2017-05-31 | 中国电子科技集团公司第三十八研究所 | A kind of pressure transmitter oil filling core body of band signal processing function |
| CN206670840U (en) * | 2017-05-04 | 2017-11-24 | 厦门乃尔电子有限公司 | A kind of small-sized silicon piezoresistance type gas pressure sensor structure |
| CN108375428A (en) * | 2018-01-04 | 2018-08-07 | 南京沃天科技有限公司 | A kind of pressure sensor for fixing absolute pressure chip using no plastic structure |
| CN109946014A (en) * | 2019-03-29 | 2019-06-28 | 江西新力传感科技有限公司 | A kind of miniature digital pressure sensor |
| CN111964811A (en) * | 2020-10-20 | 2020-11-20 | 南京沃天科技有限公司 | Anti-interference pressure transmitter |
-
2021
- 2021-04-21 CN CN202110432771.8A patent/CN113091985B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204679205U (en) * | 2015-06-05 | 2015-09-30 | 合肥中亚传感器有限责任公司 | The two damping pressure transmitter of a kind of high withstand voltage binodal |
| CN106768592A (en) * | 2017-02-24 | 2017-05-31 | 中国电子科技集团公司第三十八研究所 | A kind of pressure transmitter oil filling core body of band signal processing function |
| CN206670840U (en) * | 2017-05-04 | 2017-11-24 | 厦门乃尔电子有限公司 | A kind of small-sized silicon piezoresistance type gas pressure sensor structure |
| CN108375428A (en) * | 2018-01-04 | 2018-08-07 | 南京沃天科技有限公司 | A kind of pressure sensor for fixing absolute pressure chip using no plastic structure |
| CN109946014A (en) * | 2019-03-29 | 2019-06-28 | 江西新力传感科技有限公司 | A kind of miniature digital pressure sensor |
| CN111964811A (en) * | 2020-10-20 | 2020-11-20 | 南京沃天科技有限公司 | Anti-interference pressure transmitter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113739987A (en) * | 2021-09-27 | 2021-12-03 | 南京沃天科技股份有限公司 | Self-powered wireless transmission pressure transmitting equipment |
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| CN113091985B (en) | 2022-10-28 |
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