CN211317599U - Isolated hydrogen measurement pressure sensor - Google Patents
Isolated hydrogen measurement pressure sensor Download PDFInfo
- Publication number
- CN211317599U CN211317599U CN201921305532.0U CN201921305532U CN211317599U CN 211317599 U CN211317599 U CN 211317599U CN 201921305532 U CN201921305532 U CN 201921305532U CN 211317599 U CN211317599 U CN 211317599U
- Authority
- CN
- China
- Prior art keywords
- pressure
- stainless steel
- sensing head
- pressure sensing
- pressure sensor
- 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.)
- Active
Links
Images
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model belongs to the technical field of pressure sensor, in particular to an isolated hydrogen measurement pressure sensor, which comprises a pressure sensing head, wherein the lower end of the pressure sensing head is integrally formed with an installation thread, the interior of the pressure sensing head is provided with a pressure guiding cavity, the top end of the pressure sensing head is integrally formed with a stainless steel diaphragm, and the upper surface of the stainless steel diaphragm is fixed with a silicon strain gauge through high-temperature sintering; the induction pressure device is formed by processing a whole stainless steel bar, the pressure of hydrogen gas as a measuring medium is introduced from a pressure introduction cavity, weak deformation is transmitted to the silicon strain gauge on the other side through the stainless steel diaphragm, the silicon strain gauge transmits signals to a subsequent circuit, the silicon strain gauge and the pressure medium are completely isolated through the stainless steel diaphragm, no filled silicon oil is arranged inside, no sealing element exists, the hydrogen brittleness phenomenon is thoroughly avoided, and the product can stably measure the pressure of the hydrogen gas for a long time.
Description
Technical Field
The utility model belongs to the technical field of pressure sensor, concretely relates to keep apart hydrogen measuring pressure sensor.
Background
The existing domestic pressure measurement technology comprises several types: the pressure range of the sensor based on the principle is universal between 100KPA and 35MPA in industrial environment, but when measuring hydrogen, hydrogen molecules can penetrate through the diaphragm to enter the silicon oil due to the thin corrugated diaphragm, and the silicon oil is expanded continuously, so that the product fails. When the ceramic thick film technology is adopted, the ceramic material is used for sensing pressure, the measurement is suitable for measuring medium and low measuring ranges, the range is 500KPAa to 5MPA, and meanwhile, the hidden danger of leakage is avoided because the sealing ring is used for sealing when the stainless steel shell is packaged; in view of the problems exposed during the use of the current pressure sensors, there is a need for structural optimization and improvement of the pressure sensors.
SUMMERY OF THE UTILITY MODEL
For solving the above-mentioned problem that exists among the prior art, the utility model provides an keep apart and survey hydrogen pressure sensor has and is convenient for carry out the characteristics measured to hydrogen pressure.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an keep apart and survey hydrogen pressure sensor, includes pressure sensing head, the lower extreme integrated into one piece of pressure sensing head has the installation screw thread, the inside of pressure sensing head is equipped with draws the pressure cavity, the bottom surface that the installation screw thread was run through to the bottom that draws the pressure cavity, the side surface that the top of installation screw thread is located pressure sensing head is equipped with hexagon nut through the cutting, the top integrated into one piece of pressure sensing head has the stainless steel diaphragm, the upper surface of stainless steel diaphragm is fixed with the silicon strainometer through the high temperature sintering.
As the utility model discloses an keep apart and survey preferred technical scheme of hydrogen pressure sensor, the outside surface of pressure sensing head is fixed with stainless steel shell through laser welding, stainless steel shell's top is equipped with electrical connector, the jack has been seted up to electrical connector's upper surface.
As the utility model discloses an keep apart the preferred technical scheme of hydrogen pressure sensor that surveys, the mounting thread is hollow cylinder component, the thread groove has evenly been seted up on the outside surface of mounting thread.
As the utility model discloses an keep apart and survey preferred technical scheme of hydrogen pressure sensor, the pressure sensing head is formed by the integrative processing of 316L stainless steel bar material.
As the utility model discloses an keep apart and survey preferred technical scheme of hydrogen pressure sensor, the inside sheetmetal electric connection of silicon strainometer and jack.
As the utility model discloses an keep apart and survey preferred technical scheme of hydrogen pressure sensor, the silicon strainometer is equipped with four.
Compared with the prior art, the beneficial effects of the utility model are that: the induction pressure device is formed by processing a whole stainless steel bar, the pressure of hydrogen gas as a measuring medium is introduced from a pressure introduction cavity, weak deformation is transmitted to the silicon strain gauge on the other side through the stainless steel diaphragm, the silicon strain gauge transmits signals to a subsequent circuit, the silicon strain gauge and the pressure medium are completely isolated through the stainless steel diaphragm, no filled silicon oil is arranged inside, no sealing element exists, the hydrogen brittleness phenomenon is thoroughly avoided, and the product can stably measure the pressure of the hydrogen gas for a long time.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the connection structure of the present invention;
fig. 3 is a schematic top view of the present invention;
fig. 4 is a schematic diagram of the internal structure of the pressure sensing head of the present invention;
FIG. 5 is a schematic circuit diagram of a silicon strain gauge of the present invention;
in the figure: 1. a stainless steel housing; 2. an electrical connector; 3. a pressure sensing head; 4. a hexagonal nut; 5. installing threads; 6. a stainless steel diaphragm; 7. a silicon strain gauge; 8. a jack; 9. and a pressure guide cavity.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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. 1-5, the present invention provides the following technical solutions: the utility model provides an keep apart and survey hydrogen pressure sensor, including pressure sensing head 3, the lower extreme integrated into one piece of pressure sensing head 3 has mounting thread 5, the inside of pressure sensing head 3 is equipped with draws pressure cavity 9, the bottom surface that mounting thread 5 was run through to the bottom of drawing pressure cavity 9, the side surface that the top of mounting thread 5 is located pressure sensing head 3 is equipped with hexagon nut 4 through the cutting, the top integrated into one piece of pressure sensing head 3 has stainless steel diaphragm 6, the upper surface of stainless steel diaphragm 6 is fixed with silicon strainometer 7 through the high temperature sintering, stainless steel diaphragm 6 makes silicon strainometer 7 resistance change through its faint deformation, in this embodiment, silicon strainometer 7 is used for measuring the hydrogen pressure value.
In this embodiment, the measurement range of the pressure sensor is determined by the processing aperture and the thickness of the diaphragm for sensing pressure. Specifically, the outside surface of pressure sensing head 3 is fixed with stainless steel shell 1 through laser welding, and the top of stainless steel shell 1 is equipped with electrical connector 2, and jack 8 has been seted up to electrical connector 2's upper surface, and jack 8 is convenient for external cable and electrical connector 2 to keep being connected in this embodiment.
Specifically, the mounting thread 5 is a hollow cylindrical member, and a thread groove is uniformly formed in the outer side surface of the mounting thread 5, and the thread groove is convenient for the mounting thread 5 to be connected with a pipeline in the embodiment.
Specifically, the pressure sensing head 3 is integrally formed by processing a 316L stainless steel bar material.
Specifically, the silicon strain gauge 7 is electrically connected with a metal sheet inside the jack 8, so that circuit signals can be conveniently transmitted to a receiving device.
Specifically, four silicon strain gauges 7 are arranged, the four silicon strain gauges 7 form an electric bridge, when gas or pressure exists on the other side of the stainless steel diaphragm 6, the diaphragm is slightly deformed, resistance changes of the four silicon strain gauges 7 are caused, and when the electric bridge is powered by voltage, voltage output in proportion to the pressure is generated.
The utility model discloses a theory of operation and use flow: the utility model discloses pressure sensing head 3 is fixed on the hydrogen pipeline through mounting thread 5 when well this equipment uses, and hydrogen in the hydrogen pipeline gets into to draw and pressurizes stainless steel diaphragm 6 in the pressure cavity 9, and deformation appears when stainless steel diaphragm 6 is pressurized, and its deformation volume is measured and follow-up circuit is transmitted with the signal to silicon strainometer 7.
Finally, it should be noted that: 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 modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. 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. An isolated hydrogen measurement pressure sensor comprising a pressure sensing head (3), characterized in that: the lower extreme integrated into one piece of pressure sensing head (3) has mounting thread (5), the inside of pressure sensing head (3) is equipped with draws pressure cavity (9), the bottom surface that mounting thread (5) were run through to the bottom of drawing pressure cavity (9), the side surface that the top of mounting thread (5) is located pressure sensing head (3) is equipped with hexagon nut (4) through the cutting, the top integrated into one piece of pressure sensing head (3) has stainless steel diaphragm (6), the upper surface of stainless steel diaphragm (6) is fixed with silicon strainometer (7) through high temperature sintering.
2. An isolated hydrogen measurement pressure sensor according to claim 1, wherein: the outside surface of pressure sensing head (3) is fixed with stainless steel shell (1) through laser welding, the top of stainless steel shell (1) is equipped with electrical connector (2), jack (8) have been seted up to the upper surface of electrical connector (2).
3. An isolated hydrogen measurement pressure sensor according to claim 1, wherein: the mounting thread (5) is a hollow cylindrical component, and thread grooves are uniformly formed in the surface of the outer side of the mounting thread (5).
4. An isolated hydrogen measurement pressure sensor according to claim 1, wherein: the pressure sensing head (3) is integrally processed by a 316L stainless steel bar material.
5. An isolated hydrogen measurement pressure sensor according to claim 1, wherein: and the silicon strain gauge (7) is electrically connected with a metal sheet in the jack (8).
6. An isolated hydrogen measurement pressure sensor according to claim 1, wherein: the number of the silicon strain gauges (7) is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921305532.0U CN211317599U (en) | 2019-08-12 | 2019-08-12 | Isolated hydrogen measurement pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921305532.0U CN211317599U (en) | 2019-08-12 | 2019-08-12 | Isolated hydrogen measurement pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211317599U true CN211317599U (en) | 2020-08-21 |
Family
ID=72081561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921305532.0U Active CN211317599U (en) | 2019-08-12 | 2019-08-12 | Isolated hydrogen measurement pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211317599U (en) |
-
2019
- 2019-08-12 CN CN201921305532.0U patent/CN211317599U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203163913U (en) | Diaphragm type fiber bragg grating pressure sensor with temperature compensation | |
| CN211317599U (en) | Isolated hydrogen measurement pressure sensor | |
| CN103884399B (en) | Fluid level transmitter | |
| CN110044541A (en) | A kind of fiber bragg grating pressure sensor based on rectangular diaphragm | |
| CN106404843A (en) | Electrical measurement based four-point type nondestructive test probe with adaptive adjustment | |
| CN211425427U (en) | Seawater depth sensor | |
| CN112798172A (en) | Multifunctional sensor | |
| CN115628840B (en) | Pressure sensor and electronic equipment | |
| CN201653609U (en) | Fiber bragg grating pressure sensor | |
| CN208095049U (en) | Solder joint thrust measurement pen and solder joint thrust measurement tooling comprising it | |
| CN203100779U (en) | Combination air bag temperature and pressure detection device | |
| CN209214813U (en) | The micro- fusion pressure force snesor of glass | |
| CN103575450A (en) | Diaphragm sealing device for measuring liquid pressure, mechanical finger pressure gauge and pressure transmitter | |
| CN102620866A (en) | Digital-type temperature pressure oil-filled core | |
| US2477026A (en) | Electric fluid pressure gauge | |
| CN203177902U (en) | Online replacing type concealed induction flow meter | |
| CN206470007U (en) | A kind of multidirectional force snesor | |
| CN219348004U (en) | Sensor with temperature and pressure dual current output | |
| CN218545851U (en) | Phthalic anhydride device high pressure steam pocket liquid level measurement device | |
| CN115493744B (en) | Wide-range capacitive thin film vacuum gauge and vacuum degree detection method | |
| CN214334107U (en) | Pressure sensor | |
| CN216012547U (en) | Pressure transmitter for ship | |
| Chattopadhyay et al. | Design and development of a reluctance type pressure transmitter | |
| CN114323415B (en) | Pressure sensor with overpressure alarm function | |
| CN209992098U (en) | Pressure gauge for flow channel pressure detection convenient to carry |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |