CN113358268A - Pressure sensor - Google Patents
Pressure sensor Download PDFInfo
- Publication number
- CN113358268A CN113358268A CN202110633255.1A CN202110633255A CN113358268A CN 113358268 A CN113358268 A CN 113358268A CN 202110633255 A CN202110633255 A CN 202110633255A CN 113358268 A CN113358268 A CN 113358268A
- Authority
- CN
- China
- Prior art keywords
- pressure sensor
- elastic body
- connecting cable
- strain gauge
- adapter plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/02—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning
- G01L9/04—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning of resistance-strain gauges
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a pressure sensor, which relates to the field of sensors and comprises a nozzle base, an elastic body, a connecting cable, a strain gauge assembly and a bridge adapter plate, wherein the elastic body is fixedly arranged at the upper end of the nozzle base; when the pressure sensor is installed, the nozzle base is directly welded on a container of a measured product, a threaded sleeve and a nozzle in a traditional structure are omitted, the height of the pressure sensor is reduced, the limitation of the pressure sensor on the use space is reduced, and the sensor can be normally used under the condition that the use space is limited.
Description
Technical Field
The invention relates to the field of sensors, in particular to a pressure sensor.
Background
The pressure sensor is the most common sensor in industrial practice, is widely applied to various industrial automatic control environments, relates to water conservancy and hydropower, railway transportation, intelligent buildings, production automatic control, aerospace, military industry, petrochemical industry, oil wells, electric power, ships, machine tools, pipelines and other industries, and when a certain measured product is limited in installation position space and is in a strong space electromagnetic field interference environment formed by high-voltage and high-current pulses and in a dynamic working environment with random directions and random magnitude vibration and impact in a test, a real-time measured value of the pressure change of high-pressure gas in the pressure sensor is important data for analyzing the working state of the measured product, and the traditional pressure sensor cannot be normally used in the environment.
Disclosure of Invention
The present invention is directed to a pressure sensor designed to solve the above problems.
The invention realizes the purpose through the following technical scheme:
the pressure sensor comprises a nozzle base, an elastic body, a connecting cable, a strain gauge component and a bridge adapter plate, wherein the elastic body is fixedly arranged at the upper end of the nozzle base, the strain gauge component is arranged in the elastic body, the nozzle base is welded at a measured point of a measured product when the pressure sensor is installed, and the signal input end of the connecting cable is connected with the signal output end of the bridge adapter plate.
The invention has the beneficial effects that: when the pressure sensor is installed, the nozzle base is directly welded at a measured point of a measured product, a threaded sleeve and a nozzle in the traditional structure are omitted, the height of the pressure sensor is reduced, the limitation of the pressure sensor on the use space is reduced, and the sensor can be normally used under the condition of limited use space.
Drawings
FIG. 1 is a schematic diagram of the pressure sensor of the present invention;
FIG. 2 is a schematic view of the mounting structure of the pressure sensor of the present invention;
FIG. 3 is a schematic diagram of the structure of the elastomer in the pressure sensor of the present invention;
FIG. 4 is a schematic view of a strain gage assembly in the pressure sensor of the present invention;
FIG. 5 is a circuit diagram of the pressure sensor of the present invention;
wherein corresponding reference numerals are:
1-connecting cable, 101-lead, 2-electric connector, 3-elastomer, 301-metal circular diaphragm, 302-thread mounting hole, 303-first step, 304-mounting step, 4-nozzle base, 5-countersunk screw, 6-strain gauge component, 7-silicone gel, 8-bridge adapter plate, 9-sealing gasket, 10-upper cover and 11-tested product.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inside", "outside", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention are conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is also to be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The following detailed description of embodiments of the invention refers to the accompanying drawings.
As shown in fig. 1, 2 and 3, the pressure sensor includes a nozzle base 4, an elastic body 3, a connecting cable 1, a strain gauge assembly 6 and a bridge adapter plate 8, wherein the elastic body 3 is fixedly installed at the upper end of the nozzle base 4, the strain gauge assembly 6 is installed in the elastic body 3, when the pressure sensor is installed, the nozzle base 4 is welded on a container of a tested product 11, and a signal input end of the connecting cable 1 is connected with a signal output end of the bridge adapter plate 8.
When the pressure sensor is installed, the nozzle base 4 is directly welded on a container of a measured product 11, a threaded sleeve and a nozzle in a traditional structure are omitted, the radial size of the pressure sensor is reduced, the limitation of the pressure sensor on the use space is reduced, and the sensor can be normally used under the condition that the use space is limited.
As shown in fig. 1, 2, and 3, a threaded mounting hole 302 is provided at an upper end of a side wall of the elastic body 3, and the input end of the connection cable 1 is installed in the threaded mounting hole 302 in an interference fit manner.
The upper end of the side wall of the elastic body 3 is provided with a M3.5 threaded mounting hole 302, the effective depth of the threaded mounting hole 302 is about 0.19mm, the threaded mounting hole can be in interference fit with a connecting cable 1 with the outer diameter phi of 3.8mm, the connecting cable 1 is slowly screwed into the threaded mounting hole 302 of the elastic body 3 in assembly, a shielding layer of the connecting cable 1 is welded on the bridge adapter plate 8, four wires 101 in the connecting cable 1 and a silver wire of the strain gauge component 6 are all welded on the bridge adapter plate 8, a sensor working power supply and an output signal are all led out through the connecting cable 1, the axial size of the pressure sensor is further reduced by leading out a circuit signal of the pressure sensor from the side wall of the elastic body 3 through the connecting cable 1, the overall mass of the pressure sensor is reduced, and the reliability of the pressure sensor in vibration and impact working environments is improved.
As shown in fig. 1 and 3, an installation step 304 is provided on the elastic body 3, a bridge adapter plate 8 is installed in the installation step 304, a shielding layer of the connection cable 1 is welded on the bridge adapter plate 8, a silver wire led out from the strain gauge assembly 6 is welded to the lead 101 at the first end of the connection cable 1 through the bridge adapter plate 8, and the lead 101 at the input end of the connection cable 1 is fixedly connected to the elastic body 3 through the silicone gel 7.
The installation step 304 for installing the bridge adapter plate 8 is designed on the elastic body 3, the silver wire and the lead 101 are welded on the bridge adapter plate 8, the silver wire led out from the strain gauge component 6 is welded with the lead at the input end of the connecting cable 1 through the bridge adapter plate 8 in a switching manner, the problem that the lead 101 is not uniform in thickness and is easy to break due to direct welding is avoided, the silver wire and the lead 101 of the strain gauge component 6 are partially suspended, the suspended lead 101 is fixed by filling and sealing the silica gel 7, the reliability of the pressure sensor in the dynamic environment of vibration and impact is ensured from the manufacturing process, the shielding layer of the connecting cable 1 is directly welded on the bridge adapter plate, and the installation reliability of the connecting cable 1 is enhanced.
As shown in fig. 1, the pressure sensor further includes a sealing gasket 9 and an upper cover 10, the upper cover 10 is fixedly connected with the upper end of the elastic body 3 through a countersunk head screw 5, and the sealing gasket 9 is located between the upper cover 10 and the upper end of the elastic body 3.
As shown in fig. 3, a first side surface of a metal circular diaphragm 301 in the elastic body 3 is communicated with a product 11 to be measured and directly receives a gas pressure to be measured, the strain gauge assembly 6 is bonded to a second side surface of the metal circular diaphragm 301, the metal circular diaphragm 301 is perpendicular to a central axis of the elastic body 3, and the periphery of the metal circular diaphragm 301 is fixedly supported to form a cylindrical structure.
As shown in fig. 4 and 5, the strain gauge assembly 6 is integrated by four strain resistance discs, the four strain resistance discs form a wheatstone bridge through a bridge adapter plate 8, signals of the wheatstone bridge are led out through a connecting cable 1 and an electric connector 2, the connecting cable 1 is a four-core shielding cable, a pressure sensor transmits circuit signals through the four-core shielding cable, a shielding layer of the connecting cable 1 is connected with an elastic body 3, full shielding of a pressure sensor circuit is achieved, and the purpose of shielding space electromagnetic field interference formed by instantaneous high voltage and large current is achieved.
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.
Claims (8)
1. A pressure sensor, characterized by: the elastic body is fixedly arranged at the upper end of the connector base, the strain gauge assembly is arranged in the elastic body, the connector base is welded at a measured point of a measured product when the pressure sensor is installed, and a signal input end of the connecting cable is connected with a signal output end of the bridge adapter plate.
2. The pressure sensor of claim 1, wherein: the lateral wall upper end of elastomer is provided with the screw thread mounting hole, and the input of connecting cable line is installed in the screw thread mounting hole.
3. The pressure sensor of claim 2, wherein: the input end of the connecting cable is in interference fit with the elastic body.
4. A pressure sensor according to any one of claims 1-3, wherein: the elastic body is provided with an installation step, the bridge adapter plate is installed in the installation step, the silver wire led out by the strain gauge component and four wires in the connecting cable are all welded on the bridge adapter plate, and the silver wire led out by the strain gauge component is in switching welding with the wire at the first end of the connecting cable through the bridge adapter plate.
5. The pressure sensor of claim 4, wherein: the lead connected with the input end of the cable is fixedly connected with the elastic body through silicone gel.
6. The pressure sensor of claim 1, wherein: the pressure sensor further comprises a sealing gasket and an upper cover, the upper cover is fixedly connected with the upper end of the elastic body, and the sealing gasket is located between the upper cover and the upper end of the elastic body.
7. The pressure sensor of claim 1, wherein: the first side of the metal circular diaphragm in the elastic body is communicated with a product to be measured, the strain gauge assembly is bonded to the second side of the metal circular diaphragm, and the metal circular diaphragm is perpendicular to the central axis of the elastic body.
8. The pressure sensor of claim 7, wherein: the strain gauge assembly comprises four strain resistance discs which form a Wheatstone bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110633255.1A CN113358268A (en) | 2021-06-07 | 2021-06-07 | Pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110633255.1A CN113358268A (en) | 2021-06-07 | 2021-06-07 | Pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113358268A true CN113358268A (en) | 2021-09-07 |
Family
ID=77532881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110633255.1A Pending CN113358268A (en) | 2021-06-07 | 2021-06-07 | Pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113358268A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566514A (en) * | 2009-06-02 | 2009-10-28 | 中国航天科技集团公司第四研究院第四十四研究所 | Integrated temperature thin film pressure sensor |
| CN107449537A (en) * | 2016-04-20 | 2017-12-08 | 森萨塔科技有限公司 | The manufacture method of pressure sensor |
| CN110553768A (en) * | 2019-09-26 | 2019-12-10 | 深圳市鑫精诚科技有限公司 | Novel shear beam tension and compression force measuring sensor |
| CN211954535U (en) * | 2020-06-15 | 2020-11-17 | 蚌埠市长达力敏仪器有限责任公司 | Miniature fire control low-power consumption pressure sensor |
-
2021
- 2021-06-07 CN CN202110633255.1A patent/CN113358268A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566514A (en) * | 2009-06-02 | 2009-10-28 | 中国航天科技集团公司第四研究院第四十四研究所 | Integrated temperature thin film pressure sensor |
| CN107449537A (en) * | 2016-04-20 | 2017-12-08 | 森萨塔科技有限公司 | The manufacture method of pressure sensor |
| CN110553768A (en) * | 2019-09-26 | 2019-12-10 | 深圳市鑫精诚科技有限公司 | Novel shear beam tension and compression force measuring sensor |
| CN211954535U (en) * | 2020-06-15 | 2020-11-17 | 蚌埠市长达力敏仪器有限责任公司 | Miniature fire control low-power consumption pressure sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204679204U (en) | A kind of pressure unit | |
| CN105490076A (en) | Capacitive sensor lead sealing plug suitable for vacuum or high-voltage environment | |
| CN213336610U (en) | Novel pressure transmitter | |
| CN113358268A (en) | Pressure sensor | |
| CN204202549U (en) | The protective device that a kind of sensor immersion uses | |
| CN210893491U (en) | Flexible connection pressure sensor | |
| CN215677405U (en) | High-precision pressure sensor | |
| CN207649725U (en) | A kind of liquid level sensor | |
| CN212059230U (en) | Novel vacuum degree detection sensor assembly | |
| CN212871591U (en) | Pressure transmitter with anti-electromagnetic interference function | |
| CN212133961U (en) | Pressure transmitter | |
| CN209214813U (en) | The micro- fusion pressure force snesor of glass | |
| CN212621246U (en) | Pressure transmitter | |
| CN212871585U (en) | Novel pressure sensor | |
| CN216309281U (en) | Full-sealed high-pressure transmitter | |
| CN110763395A (en) | Pressure measuring device | |
| CN210981593U (en) | Wellhead pressure transmitter | |
| CN216246963U (en) | Pressure sensor with double-path redundant output | |
| CN113340516B (en) | Pressure measuring cell | |
| CN217716719U (en) | Impact-resistant engineering machinery pressure sensor | |
| CN109029632A (en) | A kind of differential pressure controller and measurement method for level sensing | |
| CN209446211U (en) | A kind of pressure sensor with high-insulativity | |
| CN217111258U (en) | Pressure sensor with strong impact resistance | |
| CN219284565U (en) | Pressure sensor | |
| CN217845471U (en) | High-pressure flat-film pressure sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210907 |
|
| RJ01 | Rejection of invention patent application after publication |