CN106768590A - Diaphragm pressure transmitter liquid filling body - Google Patents
Diaphragm pressure transmitter liquid filling body Download PDFInfo
- Publication number
- CN106768590A CN106768590A CN201611196917.9A CN201611196917A CN106768590A CN 106768590 A CN106768590 A CN 106768590A CN 201611196917 A CN201611196917 A CN 201611196917A CN 106768590 A CN106768590 A CN 106768590A
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- CN
- China
- Prior art keywords
- liquid
- potassium
- sodium
- pressure transmitter
- diaphragm pressure
- 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.)
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Classifications
-
- 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
- G01L7/18—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements using liquid as the pressure-sensitive medium, e.g. liquid-column gauges
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The present invention discloses diaphragm pressure transmitter liquid filling body, including transmitter body, and fluid passage is provided with transmitter body, and fluid is filled with fluid passage；The fluid is liquid sodium-potassium eutectic, and potassium content is more than 50% in liquid sodium-potassium eutectic；The potassium content of liquid sodium-potassium eutectic is 78%, and sodium content is 22%.Diaphragm pressure transmitter liquid filling body of the present invention, is greatly improved temperature applicable range, from 12.6 DEG C -880 DEG C, effectively prevents liquid vaporization at relatively high temperatures, and protection device extends its service life；Its own thermal expansion is relatively low, and thermal expansion is smaller at relatively high temperatures, and the influence to measurement apparatus is small, improves measurement apparatus precision.
Description
Technical field
The present invention relates to the liquid used in pressure transmitter, especially diaphragm pressure transmitter liquid filling body.
Background technology
In diaphragm pressure transmitter, in the fluid passage in it（Capillary channel or bigger pipeline）It is required for filling
Liquid is filled out, by liquid transfering pressure signal, typically silicone oil, mineral oil, vegetable oil etc. the hydraulic medium for being filled in it now；
Such conventional fill liquid medium, operating temperature is generally within 400 DEG C, and corresponding temperature range is narrower, higher in temperature
Occasion medium easily vaporize, and medium once vaporize, it is easy to just damage measurement apparatus；Further, itself heat of this class I liquid I is swollen
It is swollen larger, there is detrimental effect to certainty of measurement, thermal expansion belongs to systematic error, it is difficult to eliminate, causes such liquid medium
The precision of measurement apparatus is undesirable always, does not reach requirement very high, it is impossible to the need for meeting high-acruracy survey.
The content of the invention
The present invention is for diaphragm pressure transmitter liquid filling body above shortcomings in the prior art, there is provided a kind of barrier film
Pressure transmitter liquid filling body, improves its temperature applicable range to prevent vaporizing liquid under higher temperature, reduces itself thermal expansion
To improve precision.
Technical scheme：Diaphragm pressure transmitter liquid filling body, including transmitter body, in transmitter
Fluid passage is provided with body, fluid is filled with fluid passage；It is characterized in that:The fluid is liquid potassium sodium
Alloy, potassium content is more than 50% in liquid sodium-potassium eutectic.
Further feature is：The potassium content of liquid sodium-potassium eutectic is 78%, and sodium content is 22%.
The potassium content of liquid sodium-potassium eutectic is 56%, and sodium content is 44%.
Diaphragm pressure transmitter liquid filling body of the present invention, relative to prior art, with following feature：
1st, temperature applicable range is greatly improved, from -12.6 DEG C -880 DEG C, liquid vapour at relatively high temperatures is effectively prevented
Change, protection device extends its service life；
2nd, its own thermal expansion is relatively low, and thermal expansion is smaller at relatively high temperatures, and the influence to measurement apparatus is small, improves measurement dress
Put precision.
Brief description of the drawings
The structure sectional view of Fig. 1 present invention typical case's transmitters.
Specific embodiment
Diaphragm pressure transmitter liquid filling body of the present invention, including transmitter body 1, liquid is provided with transmitter body 1
Body passage 2, the capillary that fluid passage 2 is just known as is filled with fluid media (medium), Jie of the invention in fluid passage 2
Matter is fluid, and the fluid is liquid sodium-potassium eutectic, and liquid sodium-potassium eutectic, through treatment, is at normal temperatures liquid（Fluid）, liquid potassium
The potassium content of sodium alloy is more than 50%, from 50% -99%.Liquid is under liquid sodium-potassium eutectic, normal temperature.
A kind of specific embodiment formula：The potassium content of liquid sodium-potassium eutectic is 78%, and sodium content is 22%, can be obtained optimal
Effect.
Another specific embodiment formula：The potassium content of liquid sodium-potassium eutectic is 56%, and sodium content is 44%.
The present invention uses liquid sodium-potassium eutectic, and its -12.6 DEG C of measurement temperature scope -880 DEG C can adapt to such as trimerization
The production measurement of the higher temperatures such as the heating of cyanamide entropy salt, aluminum oxide, solid caustic soda production, expands the scope of application, and maximum temperature is reachable
880℃；And its own thermal expansion is relatively low, thermal expansion is smaller at relatively high temperatures, and the influence to measurement apparatus is small, improves survey
Amount device precision.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than restriction technologies side
Case, although applicant has been described in detail with reference to preferred embodiment to the present invention, one of ordinary skill in the art should manage
Solution, those modify or equivalent to technical scheme, without deviating from the objective and scope of the technical program,
All should cover in the middle of scope of the presently claimed invention.
Claims (4)
1. diaphragm pressure transmitter liquid filling body, including transmitter body（1）, in transmitter body（1）
Inside it is provided with fluid passage（2）, in fluid passage（2）It is interior filled with fluid；It is characterized in that:The fluid is liquid potassium
Sodium alloy.
2. diaphragm pressure transmitter liquid filling body according to claim 1, it is characterised in that：Potassium content in liquid sodium-potassium eutectic
More than 50%.
3. diaphragm pressure transmitter liquid filling body according to claim 2, it is characterised in that：The potassium content of liquid sodium-potassium eutectic
It is 78%, sodium content is 22%.
4. diaphragm pressure transmitter liquid filling body according to claim 2, it is characterised in that：The potassium content of liquid sodium-potassium eutectic
It is 56%, sodium content is 44%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611196917.9A CN106768590A (en) | 2016-12-22 | 2016-12-22 | Diaphragm pressure transmitter liquid filling body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611196917.9A CN106768590A (en) | 2016-12-22 | 2016-12-22 | Diaphragm pressure transmitter liquid filling body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106768590A true CN106768590A (en) | 2017-05-31 |
Family
ID=58899307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611196917.9A Withdrawn CN106768590A (en) | 2016-12-22 | 2016-12-22 | Diaphragm pressure transmitter liquid filling body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106768590A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4279160A (en) * | 1978-10-25 | 1981-07-21 | Doryokuro Kakunenryo Kaihatsu Jigyodan | Pressure measuring apparatus with temperature compensating means |
| CN105671394A (en) * | 2016-01-22 | 2016-06-15 | 上海洛丁森工业自动化设备有限公司 | Gallium liquid metal material and application of gallium liquid metal material to teletransmission pressure and different pressure transmitter |
| CN105865701A (en) * | 2016-03-24 | 2016-08-17 | 中国科学院上海应用物理研究所 | High-temperature villiaumite pressure meter |
-
2016
- 2016-12-22 CN CN201611196917.9A patent/CN106768590A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4279160A (en) * | 1978-10-25 | 1981-07-21 | Doryokuro Kakunenryo Kaihatsu Jigyodan | Pressure measuring apparatus with temperature compensating means |
| CN105671394A (en) * | 2016-01-22 | 2016-06-15 | 上海洛丁森工业自动化设备有限公司 | Gallium liquid metal material and application of gallium liquid metal material to teletransmission pressure and different pressure transmitter |
| CN105865701A (en) * | 2016-03-24 | 2016-08-17 | 中国科学院上海应用物理研究所 | High-temperature villiaumite pressure meter |
Non-Patent Citations (1)
| Title |
|---|
| 马夏尔•西蒂格: "《钠的制造、性质及用途》", 31 October 1959, 化学工业出版社 * |
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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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170531 |
|
| WW01 | Invention patent application withdrawn after publication |