CN207816505U - A kind of pressure transmitter - Google Patents
A kind of pressure transmitter Download PDFInfo
- Publication number
- CN207816505U CN207816505U CN201820200453.2U CN201820200453U CN207816505U CN 207816505 U CN207816505 U CN 207816505U CN 201820200453 U CN201820200453 U CN 201820200453U CN 207816505 U CN207816505 U CN 207816505U
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- probing shell
- pressure
- probe
- measuring cavity
- 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.)
- Expired - Fee Related
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a kind of pressure transmitters, belong to field of pressure measurement, including watchcase, wiring board and probe, probe is arranged in watchcase with wiring board and is connected by conducting wire, the probe includes probing shell, diaphragm, diffusion silicon load cell and pressure measuring cavity in probing shell, the diaphragm is made of the flexible material of water proof and blocks the front opening of probing shell, diffusion silicon load cell is located at the rear of diaphragm and surrounds the pressure measuring cavity with the inner wall of probing shell, diaphragm, and pure water is housed in the pressure measuring cavity.The utility model is provided with diaphragm; and pure water is installed in pressure measuring cavity; fluid to be measured will not be directly entered in pressure measuring cavity; but it is transferred to diffusion silicon load cell by diaphragm by pressure transmission to pure water and by pure water; so; particulate matter in liquid will not enter in pressure measuring cavity, therefore also do not allow load cell easy to pollute and result in blockage, and have the function that protect component.
Description
Technical field
The utility model is related to field of pressure measurement, more particularly to a kind of pressure transmitter.
Background technology
For diffused silicon pressure transmitter using diffusion silicon as pressure detecting element, the pressure of measured medium directly acts on biography
On the diffusion silicon diaphragm of sensor.CN 203719821U disclose a kind of pressure transmitter, by devising partial pressure axis and partial pressure hole
And can link compression shock, reduce damage of the pressure to diffused-silicon pressure element.However, when it is used to measure sewage, it is dirty
Meeting in water enters from partial pressure hole, is not only formed and is corroded to diffused-silicon pressure element, but also the particle in water is also possible to blocking point
Press hole.
Utility model content
To solve the above-mentioned problems, the utility model provides a kind of pressure transmitter, can protect load cell.
Technical solution used by the utility model is：
A kind of pressure transmitter, including watchcase, wiring board and probe, probe and wiring board are arranged in watchcase and by leading
Line connects, and the probe includes probing shell, diaphragm, diffusion silicon load cell and pressure measuring cavity in probing shell, institute
The front opening that diaphragm is made of the flexible material of water proof and blocks probing shell is stated, diffusion silicon load cell is located at diaphragm
Rear and surround the pressure measuring cavity with the inner wall of probing shell, diaphragm, pure water is housed in the pressure measuring cavity.
The diaphragm is silica gel piece or fluorine film as a further improvement of the utility model,.
The diaphragm has a ring wing of outside annular as a further improvement of the utility model, the ring wing with
Probing shell front opening is tightly connected.
The probing shell front opening is equipped with inside annular flange, institute as a further improvement of the utility model,
The upper surface of the bottom surface and flange of stating the ring wing fits closely.
Be additionally provided with can be with the loss prevention of feed liquor for the front opening of the probing shell as a further improvement of the utility model,
Pipe.
The loss prevention pipe includes the vertical section and level for being connected with each other and being connected to as a further improvement of the utility model,
Section, the concentric setting of the vertical section and probing shell and is sealedly attached at its front opening, and the horizontal segment is visited with installation
The exterior line of head is horizontal in the same direction.
The utility model has the beneficial effects that：The utility model is provided with diaphragm, and pure water is installed in pressure measuring cavity,
Fluid to be measured will not be directly entered in pressure measuring cavity, but pressure transmission to pure water and is passed through pure Water transport by diaphragm
To diffusion silicon load cell, then, the particulate matter in liquid will not enter in pressure measuring cavity, therefore also not allow pressure measurement member easy to pollute
It part and results in blockage, has haved the function that protect component.
Description of the drawings
The utility model is further illustrated with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the enlarged diagram of part A in Fig. 1.
Specific implementation mode
Pressure transmitter as depicted in figs. 1 and 2, including watchcase 1, wiring board 2 and probe, probe and wiring board 2 are arranged
It is connected in watchcase 1 and by conducting wire.Wiring board 2 is transmitted a signal to by conducting wire after probe detection pressure, later at signal
Data to gauge outfit is managed into be shown.
Probe in embodiment includes probing shell 3, diaphragm 4, the diffusion silicon load cell 5 in probing shell 3
With pressure measuring cavity 6, diaphragm 4 is made of the flexible material of water proof and blocks the front opening of probing shell 3, spreads silicon load cell
5 are located at the rear of diaphragm 4 and surround pressure measuring cavity 6 with the inner wall of probing shell 3, diaphragm 4, and pure water is housed in pressure measuring cavity 6.
When carrying out pressure measurement, the pressure of external liquid acts on diaphragm 4, and diaphragm 4 is due to being flexible material system
At, therefore pressure can be deformed and transmit, pressure is passed to pure water and is transferred to diffusion silicon load cell 5 by pure water,
So as to complete pressure measurement.
Since external liquid, sewage will not enter directly into pressure measuring cavity 6, load cell is not polluted,
And for the pressure transmitter of CN 203719821U, probe will not be blocked, has reached the work of protection transmitter
With.
It is further preferred that diaphragm 4 is silica gel piece or fluorine film, these material corrosion resistances and service life is longer.
It is further preferred that diaphragm 4 has the ring wing 41 of outside annular, the ring wing 41 and 3 front opening of probing shell
It is tightly connected.3 front opening of probing shell is equipped with inside annular flange 31, and the bottom surface and the upper surface of flange 31 of the ring wing 41 are tight
Closely connected conjunction.The ring wing 41 is fitted closely with flange 31 so that diaphragm 4 can be good at sealing with probing shell 3 so that pure
Water will not be revealed, and external liquid also cannot be introduced into pressure measuring cavity 6.It is connected with pad in addition, also being compressed in the upper surface of the ring wing 41
Piece 8.
It is further preferred that be further connected with can be with the loss prevention pipe 7 of feed liquor for the front opening of probing shell 3.The loss prevention pipe 7
One end be inlet, the other end connects probing shell 3, by the guiding fluid diaphragm 4 in external pipeline to be measured.Loss prevention pipe 7
Liquid including enabling to keeps opposing stationary state, for preventing particle, hard object in liquid from being drawn when flowing
Broken diaphragm 4.
Specifically, loss prevention pipe 7 includes the vertical section 71 and horizontal segment 72 for being connected with each other and being connected to, vertical section 71 and probe
Shell 3 is concentric to be arranged and is sealedly attached at its front opening, and horizontal segment 72 and the exterior line of installation probe are horizontal in the same direction.
The liquid of horizontal segment 72 is relative static conditions, therefore liquid will not flow to vertical section 71, but pressure can be transmitted, and avoid
Damage of the particle to diaphragm 4.
Strainer 9 is also provided on loss prevention pipe 7.
The above is the utility model preferred embodiment, is not constituted to scope of protection of the utility model
Limitation.
Claims (6)
1. a kind of pressure transmitter, including watchcase (1), wiring board (2) and probe, probe and wiring board (2) are arranged in watchcase (1)
It is interior and connected by conducting wire, it is characterised in that：The probe includes probing shell (3), diaphragm (4), is located at probing shell (3)
Interior diffusion silicon load cell (5) and pressure measuring cavity (6), the diaphragm (4) are made of the flexible material of water proof and block probe
The front opening of shell (3), diffusion silicon load cell (5) be located at diaphragm (4) rear and with the inner wall of probing shell (3),
Diaphragm (4) surrounds the pressure measuring cavity (6), and pure water is housed in the pressure measuring cavity (6).
2. pressure transmitter according to claim 1, it is characterised in that：The diaphragm (4) is silica gel piece or fluorine film.
3. pressure transmitter according to claim 2, it is characterised in that：The diaphragm (4) has outside annular
The ring wing (41), the ring wing (41) are tightly connected with probing shell (3) front opening.
4. pressure transmitter according to claim 3, it is characterised in that：Probing shell (3) front opening be equipped with to
Interior annular flange (31), the bottom surface and the upper surface of flange (31) of the ring wing (41) fit closely.
5. pressure transmitter according to claim 1 or 2 or 3 or 4, it is characterised in that：The front end of the probing shell (3)
Opening is additionally provided with can be with the loss prevention pipe (7) of feed liquor.
6. pressure transmitter according to claim 5, it is characterised in that：The loss prevention pipe (7) includes being connected with each other and connecting
Logical vertical section (71) and horizontal segment (72), the concentric setting of the vertical section (71) and probing shell (3) and is sealedly attached to
At its front opening, the horizontal segment (72) and the exterior line of installation probe are horizontal in the same direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820200453.2U CN207816505U (en) | 2018-02-05 | 2018-02-05 | A kind of pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820200453.2U CN207816505U (en) | 2018-02-05 | 2018-02-05 | A kind of pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207816505U true CN207816505U (en) | 2018-09-04 |
Family
ID=63320750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820200453.2U Expired - Fee Related CN207816505U (en) | 2018-02-05 | 2018-02-05 | A kind of pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207816505U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341939A (en) * | 2018-12-13 | 2019-02-15 | 广东浪淘砂新型材料有限公司 | A kind of defroster of hydrostatic sensor |
-
2018
- 2018-02-05 CN CN201820200453.2U patent/CN207816505U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341939A (en) * | 2018-12-13 | 2019-02-15 | 广东浪淘砂新型材料有限公司 | A kind of defroster of hydrostatic sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180904 Termination date: 20200205 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |