CN109632177A - Superhigh temperature pressure transmitter - Google Patents
Superhigh temperature pressure transmitter Download PDFInfo
- Publication number
- CN109632177A CN109632177A CN201910012323.5A CN201910012323A CN109632177A CN 109632177 A CN109632177 A CN 109632177A CN 201910012323 A CN201910012323 A CN 201910012323A CN 109632177 A CN109632177 A CN 109632177A
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- Prior art keywords
- liquid
- sensor
- connect
- flange
- superhigh temperature
- 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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Links
- 239000007788 liquid Substances 0.000 claims abstract description 49
- 238000002955 isolation Methods 0.000 claims abstract description 27
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 229910003251 Na K Inorganic materials 0.000 claims abstract description 8
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 8
- 239000000956 alloy Substances 0.000 claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims description 12
- 229920002545 silicone oil Polymers 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 210000005239 tubule Anatomy 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 abstract description 10
- 238000006243 chemical reaction Methods 0.000 description 12
- 238000006073 displacement reaction Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009021 linear effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000019491 signal transduction Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- G01L9/12—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 capacitance, i.e. electric circuits therefor
-
- 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
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0681—Protection against excessive heat
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a kind of superhigh temperature pressure transmitters, wherein includes: that pressure sensor is connect with pressure transmission module, high temperature isolation module is equipped on the pressure sensor；The high temperature isolation module includes: to connect to connect between liquid portion and sensor attachment portion by capillary, and Na-K alloy is filled in the capillary.The present invention solves the problems, such as to be unable to satisfy high-temperature molten salt measurement in the prior art, liquid portion and sensor attachment portion are connect by being respectively set, it connects and connects capillary between liquid portion and sensor attachment portion, and Na-K alloy is filled in capillary, to compensate for the domestic not no pressure transmitter of the mature pressure transmitter for being used in molten salt reactor and fast reactor currently on the market.The transmitter of superhigh temperature, which is researched and developed, successfully provides solution to molten salt reactor and fast reactor measurement.
Description
Technical field
The present invention relates to a kind of transmitter more particularly to a kind of superhigh temperature pressure transmitters.
Background technique
High temperature pressure transmitter selects import high temperature resistant sensing element to be made, and uses between core and stainless steel casing
Laser welding process makes it fuse into one completely, inside fills silicone oil or other transfer media, it is ensured that transmitter is at high operating temperatures
Safe handling, it is heat-insulated with excellent material between the pressure core and amplifying circuit of sensor, and added with radiator, it is internal
Fairlead filling high efficiency heat insulation material effectively prevents heat transfer, guarantees that amplification conversion circuit part works at ideal temperature.
Pressure transmitter currently on the market, highest use environment at 350 DEG C or so, fill by the isolation of this kind of transmitter
Liquid is mostly silicone oil AN-140 and DC-705 etc., uses silicone oil for filling liquid pressure transmitter, is not to be able to satisfy user in high temperature melting
Measurement of the salt circuit to pressure.
Summary of the invention
The invention discloses a kind of superhigh temperature pressure transmitters, are unable to satisfy high-temperature molten salt survey in the prior art to solve
The problem of amount.
Above-mentioned purpose of the invention is achieved through the following technical solutions:
A kind of superhigh temperature pressure transmitter, wherein it include: that pressure sensor is connect with pressure transmission module, the pressure
High temperature isolation module is installed on sensor；The high temperature isolation module includes: to connect to pass through between liquid portion and sensor attachment portion
Capillary connection, the capillary is interior to fill Na-K alloy.
Superhigh temperature pressure transmitter as described above, wherein the pressure sensor is capacitance type sensor.
Superhigh temperature pressure transmitter as described above, wherein the pressure sensor includes: to cover in tubular shell two is open
Two isolation diaphragms are stamped, a center measuring diaphragm are installed in the middle part of the tubular shell, center measuring diaphragm two sides are all provided with
There are capacitor fixed polar plate, vitreum, round tube one end is mounted on isolation diaphragm, and the round tube other end passes through vitreum, capacitor
Fixed polar plate is filled with silicone oil between the center measurement film and the vitreum.
Superhigh temperature pressure transmitter as described above, wherein the liquid portion that connects includes: to connect one side surface of liquid flange to be covered with
Connect liquid film piece, it is described connect relatively another side surface of liquid flange and be equipped with connect liquid flange support tube, the capillary passes through described connect
Liquid flange support tube connects liquid flange described in being projecting axially into, and the liquid flange that connects axially offers through-hole.
Superhigh temperature pressure transmitter as described above, wherein the liquid flange that connects is covered with the side for connecing liquid film piece
Transit joint is installed.
Superhigh temperature pressure transmitter as described above, wherein the sensing interconnecting piece includes: sensor support pipe both ends point
Bellows, sensor connecting flange are not installed, the capillary is through the bellows, the sensor support pipe along axial
Protrude into the sensor connecting flange；The sensor connecting flange is provided in the axial direction with through-hole；The bellows connects with described
The welding of liquid flange support tube.
Superhigh temperature pressure transmitter as described above, wherein the sensor connecting flange is mounted on the pressure sensing
On device.
Superhigh temperature pressure transmitter as described above, wherein the sensor connecting flange, described connects the capillary
Liquid film piece uses 316 stainless steels.
In conclusion by adopting the above-described technical solution, the present invention solves is unable to satisfy high temperature melting in the prior art
The problem of salt measures, connects liquid portion and sensor attachment portion by being respectively set, connects and connect hair between liquid portion and sensor attachment portion
Tubule, and Na-K alloy is filled in capillary domestic unmature is currently on the market used in molten salt reactor to compensate for
Pressure transmitter and fast reactor pressure transmitter.The transmitter of superhigh temperature, which is researched and developed, successfully to be provided to molten salt reactor and fast reactor measurement
Solution.
Detailed description of the invention
Fig. 1 is the structural block diagram of superhigh temperature pressure transmitter of the present invention；
Fig. 2 is the structural schematic diagram of the high temperature isolation module of superhigh temperature pressure transmitter of the present invention；
Fig. 3 is the structural schematic diagram of the pressure sensor of superhigh temperature pressure transmitter of the present invention；
Fig. 4 is the circuit diagram of the conversion portion circuit of superhigh temperature pressure transmitter of the present invention.
Specific embodiment
The present invention is described further with reference to the accompanying drawings and examples:
Fig. 1 is the structural schematic diagram of superhigh temperature pressure transmitter of the present invention, and Fig. 2 is superhigh temperature pressure transmitter of the present invention
The structural schematic diagram of high temperature isolation module 111, referring to Figure 1, Fig. 2, a kind of superhigh temperature pressure transmitter, wherein include: pressure
Sensor is connect with pressure transmission module 113, and high temperature isolation module 111 is equipped on pressure sensor；High temperature isolation module 111
Include: to connect to connect between liquid portion and sensor attachment portion by capillary 9, Na-K alloy 8 is filled in capillary 9.High temperature pressure
Transmitter selects energy isolation module resistant to high temperature and teletransmission Flange changer to form, and liquid-contacting part can be long-term under 550 DEG C of high temperature
Steady operation.Laser welding process is used between liquid-contacting part and transmitter, so that it is fused into one completely, is inside filled silicone oil or other
Transfer medium, it is ensured that the safe handling of transmitter at high operating temperatures is transmitted in the pressure of teletransmission isolation flange and transmitter
Medium uses special transfer medium -- Na-K alloy 8, and the boiling point of this medium can achieve 784 DEG C, play and high temperature every
From and have the function of pressure transmitting, the activity of Na-K alloy 8 is very high, water is met, that humid air releases hydrogen is explosive, so when charging
Necessary and air insulated.
Superhigh temperature pressure transmitter such as is applied molten to meet the measurement in superhigh temperature work condition environment to pressure
The pressure in high-temperature molten salt circuit is measured in salt heap, is shown and record.Hyperpressure transmitter is by developing new isolation
The liquid temperature that connects of process attachment device is increased to 650 DEG C using all-welded remote transmitter mechanism by formula dosing technology.
Further, pressure sensor is capacitance type sensor.
Fig. 3 is the structural schematic diagram of the pressure sensor of superhigh temperature pressure transmitter of the present invention, refers to Fig. 3, further
, pressure sensor includes: that two isolation diaphragms 17 are covered in tubular shell two is open, and is equipped with a center in the middle part of tubular shell
Measuring diaphragm 13,13 two sides of center measuring diaphragm are equipped with capacitor fixed polar plate 12, vitreum 14, and round tube one end is mounted on isolation
On diaphragm 17, the round tube other end passes through vitreum 14, capacitor fixed polar plate 12, fills between center measurement film 13 and vitreum 14
There is silicone oil.
Specifically, pressure sensor block 112 uses capacitance type sensor, actually a pressure/differential pressure signal transduction component is such as
Shown in Fig. 3, three weld seams 16 are by the isolation diaphragm 17 of sensor two sides, center measuring diaphragm 13, with capacitor plate 12 and glass
The pedestal of the sintering composition of body 14 is welded together to form differential capacitor, completes the pressure measurement of high-temp liquid.The pressure of measured medium
Power acts on the isolation diaphragm 17 of the positive pressure side of the room transmitter bellows δ, then is transmitted on center measuring diaphragm 13 by silicone oil 15
It is set to generate corresponding displacement.Center measuring diaphragm 13 is a kind of pre-tensioned elastic element, the pressure of displacement and measured medium
Power is directly proportional, maximum displacement about 0.08mm.The change in displacement of measuring diaphragm 13 is led to by the capacitor fixed polar plate 12 of its two sides
The variation for crossing capacitance detected, then through having the cellular conductor 11 of oil-filled function to export.
The variation of capacitance need to be converted the 4~20mA electric current that can be just converted to standard by pressure transmission module 113
Output, which should include following functions: demodulator, oscillator, vibrational control amplifier, zeroing
Circuit, tune range circuit, current control amplifier, current converter, current limit circuit, reverse protection etc..Conversion portion electricity
Road pressure inverting the functional block diagram as shown in Figure 4.
The measurement accuracy of the transmitter is made of three parts: turn of pressure and the conversion accuracy of displacement, displacement and capacitor
Change the conversion accuracy of precision and circuit-switched portions.
Pressure and the conversion accuracy of displacement are analyzed: since the measuring diaphragm thickness displacement of the transmitter is only 0.08mm, being
Guarantee that displacement is with pressure difference linear, in a free state using the flat diaphragm being tauted, with initial tension.This is not only
Linear effects are helped to improve, the hysteresis quality for reducing signal is additionally aided.Guarantee the good linear relationship of the two, can make to convert
Precision controlling is being less than 0.1%F.S；
Displacement and the conversion accuracy of capacitor are analyzed: in order to keep the displacement of measuring diaphragm anti-by the variation of capacitance
It mirrors and, which uses the design of differential capacitive structure, and keep the variation of pressure directly proportional to the variation of differential capacitor value, and
These variations are unrelated with dielectric constant, and conversion accuracy control can be made to be less than 0.1%F.S；
The conversion accuracy of circuit-switched portions is analyzed: the effect of conversion portion is will to measure the obtained capacity ratio in part to become
Change(CL be capacitance type sensor normal pressure room, CH be capacitance type sensor suction type) be converted into standard 4~
20mADC current output signal, due to the selected component all army's of use grades, this is from source just to used component
Reference voltage and the input current potential of operational amplifier controlled, the small 0.05%F.S of conversion accuracy can be made.
Every regulation as described above is designed, so that the transmitter measurement accuracy is less than the finger of 0.25%F.S
Mark is guaranteed.
111 major function of high temperature isolation module: the 1. high temperature of isolation measurement medium, due to 112 He of pressure sensor block
Pressure transmission module 113 is thermally sensitive element, will be high with isolation module in order to obtain that higher measurement accuracy needs
Warm medium is isolated with pressure sensor block 112 and pressure transmission module 113；2. is by high-temperature liquid state pressure medium with as far as possible
The small pressure loss is transmitted to pressure sensor block 112.
The function of pressure sensor block 112: will be isolated the pressure of remaining high-temperature medium through high temperature isolation module 111, conversion
The electric signal being capable of handling for pressure transmission module 113.
The function of pressure transmission module 113: the electric signal that pressure sensor block 112 exports is converted into DCS system (collection
Dissipate control system) standard 4~20mADC signal for being capable of handling.
Further, meeting liquid portion includes: to connect 5 one side surface of liquid flange and be covered with to connect liquid film piece 7, and it is relatively another to connect liquid flange 5
One side surface, which is equipped with, connects liquid flange support tube 4, and capillary 9, which passes through to connect liquid flange support tube 4 and be projecting axially into, connects liquid flange 5,
It connects liquid flange 5 and axially offers through-hole.
Further, it connects liquid flange 5 and is covered with and connect the side of liquid film piece 7 transit joint is installed.
Further, sensing interconnecting piece includes: that 2 both ends of sensor support pipe are separately installed with bellows 3, sensor connection
Flange 1, capillary 9 are projecting axially into sensor connecting flange 1 through bellows 3, sensor support pipe 2；Sensor connection method
Orchid 1 is provided in the axial direction with through-hole；Bellows 3 is welded with liquid flange support tube 4 is connect.
The leakage of high-temperature medium in order to prevent, using full welding between each component part of teletransmission high temperature isolation module 111
Form.To reach better pressure transfer effect, using the structure of jacketed bellows 3 outside capillary 9.
Further, sensor connecting flange 1 is mounted on pressure sensor.
Further, sensor connecting flange 1, capillary 9, connect liquid film piece 7 use 316 stainless steels.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work or according to the present invention can conceive by software programming to make many modifications and variations.Therefore, all
Technician in the art passes through logic analysis, reasoning or limited on the basis of existing technology under this invention's idea
The available technical solution of experiment, all should be within the scope of protection determined by the claims.
Claims (8)
1. a kind of superhigh temperature pressure transmitter characterized by comprising pressure sensor is connect with pressure transmission module, described
High temperature isolation module is installed on pressure sensor；The high temperature isolation module includes: to connect between liquid portion and sensor attachment portion
It is connected by capillary, Na-K alloy is filled in the capillary.
2. superhigh temperature pressure transmitter according to claim 1, which is characterized in that the pressure sensor is condenser type biography
Sensor.
3. superhigh temperature pressure transmitter according to claim 1, which is characterized in that the pressure sensor includes: tubulose
Shell two is covered with two isolation diaphragms in being open, and a center measuring diaphragm is equipped in the middle part of the tubular shell, and the center is surveyed
Amount diaphragm two sides are equipped with capacitor fixed polar plate, vitreum, and round tube one end is mounted on isolation diaphragm, and the round tube other end is worn
Vitreum, capacitor fixed polar plate are crossed, is filled with silicone oil between the center measurement film and the vitreum.
4. superhigh temperature pressure transmitter according to claim 1, which is characterized in that the liquid portion that connects includes: to connect liquid flange
One side surface, which is covered with, connects liquid film piece, it is described connect relatively another side surface of liquid flange and be equipped with connect liquid flange support tube, the hair
Tubule pass through it is described connect liquid flange support tube be projecting axially into it is described connect liquid flange, the liquid flange that connects axially offers through-hole.
5. superhigh temperature pressure transmitter according to claim 4, which is characterized in that the liquid flange that connects is covered with described connect
The side of liquid film piece is equipped with transit joint.
6. superhigh temperature pressure transmitter according to claim 4, which is characterized in that the sensing interconnecting piece includes: sensing
Device support tube both ends are separately installed with bellows, sensor connecting flange, and the capillary runs through the bellows, the sensing
Device support tube is projecting axially into the sensor connecting flange；The sensor connecting flange is provided in the axial direction with through-hole；It is described
Bellows and the liquid flange support tube that connects weld.
7. superhigh temperature pressure transmitter according to claim 6, which is characterized in that the sensor connecting flange is mounted on
On the pressure sensor.
8. superhigh temperature pressure transmitter according to claim 6, which is characterized in that the sensor connecting flange, described
Capillary, the liquid film piece that connects are using 316 stainless steels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910012323.5A CN109632177B (en) | 2019-01-07 | Ultra-high temperature pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910012323.5A CN109632177B (en) | 2019-01-07 | Ultra-high temperature pressure transmitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109632177A true CN109632177A (en) | 2019-04-16 |
| CN109632177B CN109632177B (en) | 2024-05-31 |
Family
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693210A (en) * | 2020-07-01 | 2020-09-22 | 陕西省计量科学研究院 | Siphon type negative pressure alternating test method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060162459A1 (en) * | 2004-06-25 | 2006-07-27 | Broden David A | High temperature pressure transmitter assembly |
| CN201488849U (en) * | 2009-04-24 | 2010-05-26 | 上海皓鹰测控技术有限公司 | Combined high-temperature fusant pressure transmitter |
| CN103017974A (en) * | 2011-09-26 | 2013-04-03 | 上海洛丁森工业自动化设备有限公司 | Novel transmissible pressure and differential pressure transmitter for measuring pressure of ultrahigh temperature medium |
| US20140090476A1 (en) * | 2012-09-28 | 2014-04-03 | Rosemount Inc. | Remote seal process pressure measuring system |
| CN105021325A (en) * | 2015-07-02 | 2015-11-04 | 上海自动化仪表有限公司 | Capacitive pressure sensor |
| CN105352651A (en) * | 2015-12-04 | 2016-02-24 | 中国原子能科学研究院 | High-temperature-resistant corrosion-resistant anti-crystallization pressure and differential pressure transmitter isolation module |
| US20160091383A1 (en) * | 2014-09-30 | 2016-03-31 | Rosemount Inc. | Fill fluid thermal management |
| CN107909118A (en) * | 2017-12-11 | 2018-04-13 | 北京映翰通网络技术股份有限公司 | A kind of power distribution network operating mode recording sorting technique based on deep neural network |
| CN209525047U (en) * | 2019-01-07 | 2019-10-22 | 上海自动化仪表有限公司 | Superhigh temperature pressure transmitter |
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060162459A1 (en) * | 2004-06-25 | 2006-07-27 | Broden David A | High temperature pressure transmitter assembly |
| CN201488849U (en) * | 2009-04-24 | 2010-05-26 | 上海皓鹰测控技术有限公司 | Combined high-temperature fusant pressure transmitter |
| CN103017974A (en) * | 2011-09-26 | 2013-04-03 | 上海洛丁森工业自动化设备有限公司 | Novel transmissible pressure and differential pressure transmitter for measuring pressure of ultrahigh temperature medium |
| US20140090476A1 (en) * | 2012-09-28 | 2014-04-03 | Rosemount Inc. | Remote seal process pressure measuring system |
| US20160091383A1 (en) * | 2014-09-30 | 2016-03-31 | Rosemount Inc. | Fill fluid thermal management |
| CN105021325A (en) * | 2015-07-02 | 2015-11-04 | 上海自动化仪表有限公司 | Capacitive pressure sensor |
| CN105352651A (en) * | 2015-12-04 | 2016-02-24 | 中国原子能科学研究院 | High-temperature-resistant corrosion-resistant anti-crystallization pressure and differential pressure transmitter isolation module |
| CN107909118A (en) * | 2017-12-11 | 2018-04-13 | 北京映翰通网络技术股份有限公司 | A kind of power distribution network operating mode recording sorting technique based on deep neural network |
| CN209525047U (en) * | 2019-01-07 | 2019-10-22 | 上海自动化仪表有限公司 | Superhigh temperature pressure transmitter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693210A (en) * | 2020-07-01 | 2020-09-22 | 陕西省计量科学研究院 | Siphon type negative pressure alternating test method |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20220914 Address after: 102413 Beifang, Xinzhen, Fangshan District, Beijing Applicant after: CHINA INSTITUTE OF ATOMIC ENERGY Address before: Building 7, 191 Guangzhong West Road, Zhabei District, Shanghai 200072 Applicant before: SHANGHAI AUTOMATION INSTRUMENTATION Co.,Ltd. |
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| TA01 | Transfer of patent application right | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cui Guosheng Inventor after: Yang Jianwei Inventor after: Dong Kangle Inventor after: Liu Xiaoshen Inventor after: Wang Zhixin Inventor after: Jin Lihua Inventor after: Yao Lianghang Inventor after: Bao Weihua Inventor after: Chen Kai Inventor before: Jin Lihua Inventor before: Yao Lianghang Inventor before: Bao Weihua Inventor before: Chen Kai |
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