CN113375973A - Liquid propellant sampling device - Google Patents
Liquid propellant sampling device Download PDFInfo
- Publication number
- CN113375973A CN113375973A CN202110584647.3A CN202110584647A CN113375973A CN 113375973 A CN113375973 A CN 113375973A CN 202110584647 A CN202110584647 A CN 202110584647A CN 113375973 A CN113375973 A CN 113375973A
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- Prior art keywords
- sampling
- hole
- thread
- propellant
- sampling bottle
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- 238000005070 sampling Methods 0.000 title claims abstract description 98
- 239000003380 propellant Substances 0.000 title claims abstract description 49
- 239000007788 liquid Substances 0.000 title claims abstract description 23
- 238000002347 injection Methods 0.000 claims abstract description 36
- 239000007924 injection Substances 0.000 claims abstract description 36
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000006073 displacement reaction Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 10
- 239000000126 substance Substances 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- BRUFJXUJQKYQHA-UHFFFAOYSA-O ammonium dinitramide Chemical compound [NH4+].[O-][N+](=O)[N-][N+]([O-])=O BRUFJXUJQKYQHA-UHFFFAOYSA-O 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- CRJZNQFRBUFHTE-UHFFFAOYSA-N hydroxylammonium nitrate Chemical compound O[NH3+].[O-][N+]([O-])=O CRJZNQFRBUFHTE-UHFFFAOYSA-N 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to the technical field of propellant measuring devices, and provides a liquid propellant sampling device which comprises a device body, wherein the device body comprises a sampling bottle, a sampling unit is connected onto the sampling bottle, and the sampling bottle is also respectively provided with an injection unit for injecting propellant and a discharge port for discharging the propellant; by adopting the technical scheme, the propellant can be injected into the sampling bottle through the injection unit before sampling, and does not need to be filled in the sampling process. Because other substances, equipment and the like are not needed to intervene in the sampling process, parameters such as reference and temperature can be measured in the sampling bottle, and the accuracy of experimental data is improved.
Description
Technical Field
The invention relates to the technical field of propellant measuring devices, in particular to a liquid propellant sampling device.
Background
The liquid propellant used in the space attitude and orbit control engine is mainly based on hydrazine substances, the defects of high risk, incapability of being filled in advance, overlong preparation time, corrosivity and the like are gradually shown due to high toxicity of the liquid propellant, part of metals also have catalytic action on the liquid propellant to different degrees, and the liquid propellant provides challenges for storage, parameter measurement and the like of the propellant.
The green nontoxic liquid propellant consisting of the fuel such as ammonium dinitramide, ammonium nitrate and the like, the stabilizer and the like becomes a key research direction of the advanced space chemical propulsion technology in the 21 st century, and the propellant gains wide attention of researchers due to the advantages of high density ratio, adjustable burning speed and the like. However, chemical reaction processes such as evaporation, thermal decomposition and combustion of fuels such as ammonium dinitramide and hydroxylammonium nitrate are very complicated, and the necessary condition for exploring various parameters lies in developing experimental research on mechanicalness. Therefore, sampling it is one of the important steps. In the prior art, the accuracy of propellant filling and experimental data needs to be improved in the sampling process.
How to effectively solve the technical problems is a problem to be solved by the technical personnel in the field at present.
Disclosure of Invention
To solve the above technical problem or at least partially solve the above technical problem, the present invention provides a liquid propellant sampling device.
The liquid propellant sampling device includes a device body, the device body includes:
the sampling bottle is connected with a sampling unit;
and the sampling bottle is also provided with an injection unit for injecting propellant and a discharge port for discharging the propellant.
Optionally, the sampling unit includes a first support cover connected to the sampling bottle, and the first support cover is provided with a first through hole and a second through hole respectively;
the sampling pipe is inserted into the first through hole, and the thermometer is arranged on the second through hole.
Optionally, the first support cover comprises a first cover body, a second cover body is arranged at the edge of the first cover body, and an included angle between the first cover body and the second cover body is a right angle;
the first through hole and the second through hole are both positioned on the first cover body;
be close to the sampling bottle side the surface of second lid body is provided with first screw thread, be close to second lid body department the surface of sampling bottle is provided with the second screw thread, first screw thread with threaded connection between the second screw thread.
Optionally, a fixing piece for fixing the thermometer is arranged on the surface of the second through hole;
the fixing piece comprises a first fixing barrel and a second fixing barrel which are connected with the second through hole simultaneously, the first fixing barrel extends towards the side far away from the sampling bottle, and the second fixing barrel extends towards the inside of the sampling bottle;
the first fixed cylinder and the second fixed cylinder are communicated through the second through hole.
Optionally, a third through hole is formed in the end part, far away from the sampling bottle side, of the first fixed cylinder, and a first cap is connected to the third through hole;
the surface of the first fixed cylinder close to the first cap side is provided with third threads, the surface of the first cap close to the third thread side is provided with fourth threads, and the third threads are connected with the fourth threads.
Optionally, a fixing edge is arranged at the end part of the second fixing cylinder close to the sampling bottle side, and a fourth through hole for the thermometer to pass through is arranged on the fixing edge.
Optionally, the injection unit includes a fifth through hole disposed on the sampling bottle, and an injection cylinder is disposed on the fifth through hole;
the injection device comprises an injection barrel, a first cover cap and a second cover cap, wherein the inner surface of the injection barrel is provided with a fifth thread for connecting a syringe, the outer surface of the injection barrel is provided with a sixth thread for connecting the second cover cap, the surface of the second cover cap connected with the sixth thread is provided with a seventh thread, and the sixth thread and the seventh thread are in threaded connection.
Optionally, a slide plate unit for adjusting the size of the fifth through hole is arranged on the sampling bottle close to the injection unit.
Optionally, the sliding plate unit includes a slide way arranged on the body of the sampling bottle and connected with the fifth through hole, a first displacement plate is slidably connected in the slide way, a second displacement plate is connected to the end of the first displacement plate, and an included angle between the first displacement plate and the second displacement plate is a right angle.
Optionally, an eighth thread is provided on the syringe connected to the fifth thread, and the syringe is connected to the fifth thread through the eighth thread.
In the present invention, the propellant can be injected into the sampling bottle through the injection unit before sampling without being filled during sampling. Because other substances, equipment and the like are not needed to intervene in the sampling process, parameters such as reference and temperature can be measured in the sampling bottle, and the accuracy of experimental data is improved.
Drawings
FIG. 1 is a schematic structural diagram of a sampling unit provided in the present invention;
FIG. 2 is a schematic structural view of a sample bottle provided by the present invention;
FIG. 3 is a schematic diagram of the structure of the syringe provided by the present invention;
reference numerals:
1. a sampling unit; 11. a first through hole; 12. a second through hole; 13. a third through hole; 14. a first fixed cylinder; 15. a second fixed cylinder; 16. fixing the edge; 161. a fourth via hole; 17. a first cover body; 18. a second cover body; 181. a first thread;
2. a sampling tube;
3. a first cap; 31. a fourth thread;
4. a thermometer;
5. a sampling bottle; 51. a fifth through hole; 52. a second thread;
6. a discharge port;
7. an injection unit; 71. an injection cylinder; 711. a fifth thread; 72. a slide plate unit; 721. a first displacement plate; 722. a second displacement plate;
8. a second cap; 81. a seventh thread;
9. an injector; 91. and an eighth thread.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The following examples are intended to illustrate the invention, but not to limit it. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "connected" and "coupled" are used broadly and may include, for example, a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In an embodiment of the present invention, with reference to fig. 1 and 2, a liquid propellant sampling device includes a device body, where the device body includes:
the sampling bottle 5 is connected with the sampling unit 1;
the sample bottle 5 is further provided with an injection unit 7 for injecting propellant and a discharge port 6 for discharging propellant, respectively.
In this embodiment, the propellant can be injected into the sampling bottle 5 by the injection unit 7 before sampling without the need to prime the propellant during sampling. Because other materials, equipment and the like are not needed to intervene in the sampling process, parameters such as reference and temperature can be measured in the sampling bottle 5, and the accuracy of experimental data is improved.
In another embodiment of the present invention, as shown in fig. 1, the sampling unit 1 includes a first supporting cover connected to the sampling bottle 5, and the first supporting cover is provided with a first through hole 11 and a second through hole 12;
the sampling pipe 2 is inserted into the first through hole 11, and the thermometer 4 is arranged on the second through hole 12.
In this embodiment, the sampling tube 2 extends into the sampling bottle 5 through the first through hole 11, and the propellant in the sampling bottle 5 is sampled through the sampling tube 2.
The thermometer 4 extends through the second through-hole 12 into the sample bottle 5, and the temperature of the propellant in the sample bottle 5 is measured by the thermometer 4.
The discharge port 6 and the end of the sampling tube 2 far away from the sampling bottle 5 are respectively connected to the pipeline of the constant pressure experiment.
In another embodiment of the present invention, as shown in fig. 1, the first supporting cover includes a first cover body 17, a second cover body 18 is disposed at an edge of the first cover 17, and an included angle between the first cover body 17 and the second cover body 18 is a right angle;
the first through hole 11 and the second through hole 12 are both positioned on the first cover body 17;
the surface of the second cover body 18 close to the sampling bottle 5 is provided with a first thread 181, the surface of the sampling bottle 5 close to the second cover body 18 is provided with a second thread 52, and the first thread 181 is in threaded connection with the second thread 52.
In this embodiment, the first supporting cap is connected to the sampling bottle 5 by the screw thread connection between the first screw thread 181 and the second screw thread 52, so that good sealing performance can be maintained, and a constant pressure requirement in a wide range can be met. In addition, the first supporting cover and the sampling bottle 5 are convenient to disassemble, and repeated use is facilitated.
In order to further stabilize the thermometer 4 during the experiment, according to another embodiment of the present invention, as shown in fig. 1, a fixing member for fixing the thermometer 4 is disposed on the surface of the second through hole 12;
the fixing piece comprises a first fixing cylinder 14 and a second fixing cylinder 15 which are connected with the second through hole 12 simultaneously, the first fixing cylinder 14 extends towards the side far away from the sampling bottle 5, and the second fixing cylinder 15 extends towards the inside of the sampling bottle 5;
the first fixed cylinder 14 and the second fixed cylinder 15 communicate with each other through the second through hole 12.
In the present embodiment, the thermometer 4 is placed in the first fixed cylinder 14 and the second fixed cylinder 15, so that the thermometer 4 is vertically positioned.
In another embodiment of the present invention, as shown in fig. 1, a third through hole 13 is provided at an end of the first fixed cylinder 14 away from the sampling bottle 5, and the first cap 3 is connected to the third through hole 13;
the surface of the first fixed cylinder 14 near the first cap 3 side is provided with a third screw, and the surface of the first cap 3 near the third screw side is provided with a fourth screw 31, and the third screw is connected with the fourth screw 31.
In this embodiment, the thermometer 4 is put in or taken out through the third through hole 13.
In another embodiment of the present invention, as shown in fig. 1, a fixing edge 16 is disposed at an end of the second fixing cylinder 15 close to the sampling bottle 5, and a fourth through hole 161 for passing the thermometer 4 is disposed on the fixing edge 16.
In this embodiment, the fixing edge 16 further fixes the thermometer 4, and simultaneously, the thermometer 4 is limited, so that stable and continuous temperature measurement of the propellant in the sampling bottle 5 is realized.
In another embodiment of the present invention, as shown in fig. 2, the injection unit 7 includes a fifth through hole 51 disposed on the sampling bottle 5, and an injection cylinder 71 is disposed on the fifth through hole 51;
the inner surface of the injection cylinder 71 is provided with a fifth screw 711 for connecting the syringe 9, the outer surface of the injection cylinder 71 is provided with a sixth screw for connecting the second cap 8, the surface of the second cap 8 connected with the sixth screw is provided with a seventh screw 81, and the sixth screw and the seventh screw 81 are screwed together.
In this embodiment, the second cap 8 is separated from the sample bottle 5 and the operator is screwed into the injection cartridge 71 via the syringe 9 to effect injection of propellant into the sample bottle 5.
The second cap 8 is connected with the seventh thread 81 through the sixth thread, so that the outside is isolated from the injection cylinder 71, the sealing performance of the injection cylinder 71 and the sealing performance of the sampling bottle 5 can be kept, and the constant pressure requirement in a larger range is met. In addition, the second cap 8 and the injection cylinder 71 are convenient to disassemble, and repeated use is facilitated.
In another embodiment of the present invention, as shown in fig. 2, a slide plate unit 72 for adjusting the size of the fifth through hole 51 is provided on the sample bottle 5 near the injection unit 7.
In this embodiment, the sliding plate unit 72 is displaceable, and the size of the fifth through hole 51 is changed by the sliding plate unit 72, so as to control the injection and emptying processes of the propellant.
In another embodiment of the present invention, as shown in fig. 2, the sliding plate unit 72 includes a slide way disposed on the body of the sampling bottle 5 and connected to the fifth through hole 51, a first displacement plate 721 is slidably connected to the slide way, a second displacement plate 722 is connected to an end of the first displacement plate 721, and an included angle between the first displacement plate 721 and the second displacement plate 722 is a right angle.
In this embodiment, the worker applies a force to the second displacement plate 722 to synchronously displace the first displacement plate 721 on the fifth through hole 51, so as to adjust the size of the fifth through hole 51 and control the injection and emptying processes of the propellant.
In another embodiment of the present invention, as shown in fig. 3, the syringe 9 connected to the fifth screw 711 is provided with an eighth screw 91, and the syringe 9 is connected to the fifth screw 711 by the eighth screw 91.
In this embodiment, the syringe 9 is firmly connected to the sampling bottle 5 by the threaded connection between the eighth thread 91 and the fifth thread 711, so that the syringe 9 is prevented from slipping out during propellant injection to cause outflow of propellant.
In the invention, in consideration of the general corrosiveness of the liquid propellant and the potential catalytic property of a metal material, the materials of all structural components on the sampling unit and the sampling bottle are made of insulating materials which are high-temperature resistant and corrosion resistant in the prior art, the thermometer is made of mercury thermometer, and the injector is made of transparent glass materials in the prior art, so that the change of the propellant can be observed more visually.
The above description is not intended to limit the present invention, and it should be finally explained that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments. Those of ordinary skill in the art will understand that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments without departing from the spirit of the present invention.
Claims (10)
1. A liquid propellant sampling device comprising a device body, wherein the device body comprises:
the sampling bottle is connected with a sampling unit;
and the sampling bottle is also provided with an injection unit for injecting propellant and a discharge port for discharging the propellant.
2. The liquid propellant sampling device of claim 1,
the sampling unit comprises a first supporting cover connected with the sampling bottle, and a first through hole and a second through hole are respectively formed in the first supporting cover;
the sampling pipe is inserted into the first through hole, and the thermometer is arranged on the second through hole.
3. The liquid propellant sampling device of claim 2,
the first supporting cover comprises a first cover body, a second cover body is arranged at the edge of the first cover body, and an included angle between the first cover body and the second cover body is a right angle;
the first through hole and the second through hole are both positioned on the first cover body;
be close to the sampling bottle side the surface of second lid body is provided with first screw thread, be close to second lid body department the surface of sampling bottle is provided with the second screw thread, first screw thread with threaded connection between the second screw thread.
4. The liquid propellant sampling device of claim 3,
a fixing piece for fixing the thermometer is arranged on the surface of the second through hole;
the fixing piece comprises a first fixing barrel and a second fixing barrel which are connected with the second through hole simultaneously, the first fixing barrel extends towards the side far away from the sampling bottle, and the second fixing barrel extends towards the inside of the sampling bottle;
the first fixed cylinder and the second fixed cylinder are communicated through the second through hole.
5. The liquid propellant sampling device of claim 4,
a third through hole is formed in the end part, far away from the sampling bottle side, of the first fixed cylinder, and a first cover cap is connected to the third through hole;
the surface of the first fixed cylinder close to the first cap side is provided with third threads, the surface of the first cap close to the third thread side is provided with fourth threads, and the third threads are connected with the fourth threads.
6. The propellant liquid sampling device of claim 4 wherein the end of the second stationary canister adjacent the side of the sampling bottle is provided with a stationary rim, the stationary rim being provided with a fourth through hole for the thermometer to pass through.
7. The liquid propellant sampling device of claim 1,
the injection unit comprises a fifth through hole arranged on the sampling bottle, and an injection cylinder is arranged on the fifth through hole;
the injection device comprises an injection barrel, a first cover cap and a second cover cap, wherein the inner surface of the injection barrel is provided with a fifth thread for connecting a syringe, the outer surface of the injection barrel is provided with a sixth thread for connecting the second cover cap, the surface of the second cover cap connected with the sixth thread is provided with a seventh thread, and the sixth thread and the seventh thread are in threaded connection.
8. The liquid propellant sampling device of claim 7 wherein a slide plate unit is provided on the sample bottle adjacent the injection unit for adjusting the size of the fifth through-hole.
9. The liquid propellant sampling device of claim 8, wherein the slide plate unit comprises a slide way arranged on the body of the sampling bottle and connected with the fifth through hole, a first displacement plate is connected in the slide way in a sliding way, a second displacement plate is connected to the end part of the first displacement plate, and the included angle between the first displacement plate and the second displacement plate is a right angle.
10. The liquid propellant sampling device of claim 9 wherein the syringe connected to the fifth thread is provided with an eighth thread, the syringe being connected to the fifth thread by the eighth thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110584647.3A CN113375973A (en) | 2021-05-27 | 2021-05-27 | Liquid propellant sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110584647.3A CN113375973A (en) | 2021-05-27 | 2021-05-27 | Liquid propellant sampling device |
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| Publication Number | Publication Date |
|---|---|
| CN113375973A true CN113375973A (en) | 2021-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110584647.3A Pending CN113375973A (en) | 2021-05-27 | 2021-05-27 | Liquid propellant sampling device |
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| CN (1) | CN113375973A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6114178A (en) * | 1997-06-25 | 2000-09-05 | Institut Francais Du Petrole | Device for removing and/or injecting a fluid sample enabling the chemical and/or thermodynamic equilibrium to be preserved |
| CN2450654Y (en) * | 2000-11-15 | 2001-09-26 | 中国石油化工股份有限公司 | Sampler |
| CN203108552U (en) * | 2013-03-06 | 2013-08-07 | 李冬丽 | Multi-purpose chemical reagent bottle |
| CN104297421A (en) * | 2014-05-30 | 2015-01-21 | 中国石油化工股份有限公司 | Hydrogen sulfide-containing sewage treatment agent test apparatus |
| CN105806660A (en) * | 2015-06-07 | 2016-07-27 | 付世权 | Pollution-free and waste-free online automatic sampling device for lubricating oil |
| CN208599782U (en) * | 2018-08-02 | 2019-03-15 | 安阳师范学院 | A kind of pressurized type chemical reaction bottle bottle stopper |
| CN211096680U (en) * | 2019-10-09 | 2020-07-28 | 武汉大学中南医院 | Drip alarm for transfusion monitoring |
| CN112729960A (en) * | 2021-02-04 | 2021-04-30 | 宁夏福瑞硅烷材料有限公司 | Movable liquid closed sampler |
-
2021
- 2021-05-27 CN CN202110584647.3A patent/CN113375973A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6114178A (en) * | 1997-06-25 | 2000-09-05 | Institut Francais Du Petrole | Device for removing and/or injecting a fluid sample enabling the chemical and/or thermodynamic equilibrium to be preserved |
| CN2450654Y (en) * | 2000-11-15 | 2001-09-26 | 中国石油化工股份有限公司 | Sampler |
| CN203108552U (en) * | 2013-03-06 | 2013-08-07 | 李冬丽 | Multi-purpose chemical reagent bottle |
| CN104297421A (en) * | 2014-05-30 | 2015-01-21 | 中国石油化工股份有限公司 | Hydrogen sulfide-containing sewage treatment agent test apparatus |
| CN105806660A (en) * | 2015-06-07 | 2016-07-27 | 付世权 | Pollution-free and waste-free online automatic sampling device for lubricating oil |
| CN208599782U (en) * | 2018-08-02 | 2019-03-15 | 安阳师范学院 | A kind of pressurized type chemical reaction bottle bottle stopper |
| CN211096680U (en) * | 2019-10-09 | 2020-07-28 | 武汉大学中南医院 | Drip alarm for transfusion monitoring |
| CN112729960A (en) * | 2021-02-04 | 2021-04-30 | 宁夏福瑞硅烷材料有限公司 | Movable liquid closed sampler |
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