LU101852A1 - Device for measuring negative pressure - Google Patents
Device for measuring negative pressure Download PDFInfo
- Publication number
- LU101852A1 LU101852A1 LU101852A LU101852A LU101852A1 LU 101852 A1 LU101852 A1 LU 101852A1 LU 101852 A LU101852 A LU 101852A LU 101852 A LU101852 A LU 101852A LU 101852 A1 LU101852 A1 LU 101852A1
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- measuring
- negative pressure
- pipe
- parts
- gas pipeline
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
- G01L21/02—Vacuum gauges having a compression chamber in which gas, whose pressure is to be measured, is compressed
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a device for measuring negative pressure, which includes a measuring device body, a measuring pipe, a piston pad, a connecting rod, a gas pipeline, a storage air bag, a pressure spring, and a rubber pad. A measuring pipe is provided above the measuring device body. The measuring pipe and the measuring device body are integrally formed. The bottom of the measuring pipe is provided with a storage air bag. The storage air bag is fixedly connected to the measuring pipe. The bottom of the storage air bag is provided with a gas transmission pipe. Connect with an external negative pressure device, and then insert the pressure gauge into the measuring pipe to measure the pressure. When the pressure gauge is removed after the measurement, the pressure spring will automatically lift the upper rubber pad to block the measuring pipe.
Description
lu101852 Device for measuring negative pressure Domain The invention belongs to the technical field of medical equipment, and in particular relates to a device for measuring negative pressure. Background technology Negative pressure is simply a state of atmospheric pressure below atmospheric pressure, which is commonly said. Its use is very common. People often make a certain part of the space appear negative pressure, and can use the ubiquitous atmospheric pressure to help us.
The original clinical negative pressure was estimated by medical staff based on the negative pressure device, which cannot be quantified and is very inaccurate. Moreover, there is no clinically accurate device for measuring negative pressure. Accuracy also requires some measures to ensure.
Contents of the invention The purpose of the present invention is to provide a device for measuring negative pressure, to solve the above-mentioned background technology that the original clinical negative pressure is estimated by medical staff based on the negative pressure device, which cannot be quantified, and is very inaccurate. The problem of measuring the negative pressure device, which cannot provide better and more accurate service for medical staff, the accuracy of the measuring device also needs some measures to ensure.
In order to achieve the above object, the present invention provides the followinglu101852 2 technical solution: a device for measuring negative pressure, including a measuring device body, a measuring pipe, a piston pad, a connecting rod, a gas pipeline, a storage bag, a pressure spring, and a rubber pad, The measuring pipe is provided above the inside of the measuring device body, the measuring pipe is integrally formed with the measuring device body, the bottom of the measuring pipe is provided with the reservoir airbag, and the reservoir airbag is fixedly connected to the measurement pipeline , The bottom of the reservoir airbag is provided with the gas delivery pipe, the gas delivery pipeline is fixedly connected with the reservoir airbag, the inside of the measurement pipe is provided with the piston pad, the piston pad and the measurement pipe Fixed connection, the bottom of the piston pad is provided with the connecting rod, the connecting rod is fixedly connected with the piston pad, the bottom of the connecting rod is provided with the rubber pad, the rubber pad and the reservoir airbag The connection is fixed, and the pressure spring is provided at the bottom of the rubber pad, and the pressure spring is fixedly connected to the rubber pad.
Preferably, a marking post is provided at a middle position of the outer side wall of the gas pipeline, and the marking post is detachably connected to the gas pipeline.
Preferably, the inner bottom end of the pressure spring is provided with a fixing rod, and the fixing rod is fixedly connected with the pressure spring.
Preferably, a first accommodating cavity is opened inside the measuring pipe, and the first accommodating chamber is integrally formed with the measuring pipe.
Preferably, a second accommodating cavity is opened inside the storage airbag, and the second accommodating cavity is integrally formed with the storage airbag.
Preferably, one end of the gas pipeline is connected to the inner bottom end oflu101852 3 the reservoir airbag, and the reservoir airbag is fixedly connected to the gas pipeline.
Preferably, a third volume cavity is opened inside the gas pipeline, and the third volume cavity is integrally formed with the gas pipeline.
Preferably, a sealing valve is fixed on the gas pipeline.
Preferably, the measurement pipeline is coated with a waterproof layer, and the preparation method of the waterproof layer comprises: Take the following raw materials for each component by weight: acrylic ester
19.3-21.5 parts, epoxy resin 12.6-14.2 parts, dimethyl phosphate 5-6 parts, ethyl acetate 0.9-1.3 parts, trichloroethylene 1.5-2.5 parts , 3.4-5.2 parts lemon oil, 1.1-2.3 parts urea, 10-15 parts absolute ethanol.
S1. Prefabricated organic solvent: mix acrylate, epoxy resin, dimethyl phosphate and lemon oil, heat to 32-36 °C, stir evenly, and keep warm for 5-8min; S2. Preparation of waterproof coating: add ethyl acetate, trichloroethylene, urea, and absolute ethanol to the organic solvent in S1 in sequence. After stirring evenly, heat the temperature to 45 ° C and hold for 10 minutes; S3. Treatment: Ultrasonic treatment of the water-repellent coating prepared by S2 for 12-15min, then cooling to room temperature and stirring at 1500r / min speed for 0.5h; S4. Coating: The waterproof coating obtained by S3 is evenly coated on the surface of the measuring pipe by electrostatic coating; S5. Drying: Place the measuring pipe obtained by S4 in a cool and ventilated place and blow dry for 5-6h.
Compared with the prior art, the beneficial effects of the present invention are: designing a device for measuring negative pressure, connecting the storage bag withlu101852 4an external negative pressure device through a gas pipeline, and then inserting a pressure gauge into the measuring pipe to perform pressure measurement When the pressure gauge is removed after the measurement, the pressure spring will automatically lift the upper rubber pad to block the measurement pipeline, which can ensure that the gas in the storage bag will not circulate, increase the air tightness of the negative pressure measurement device and Accuracy, the normal movement of the piston pad affects the accuracy of the final measurement result, so a waterproof layer is coated on the measurement pipeline to prevent water droplets from remaining on the pipe wall and affecting the movement of the piston pad.
Figure illustration
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the internal structure of the measuring pipeline of the present invention;
FIG. 3 is a schematic structural view of the pressure spring of the present invention;
In the figures: 11, measuring device body; 12, measuring pipeline; 13, piston pad; 14, connecting rod; 15, gas pipeline; 16, storage bag; 17, pressure spring; 18, rubber pad; 151, marking post; 171. Fixing rod.
Specific implementation modalities
The technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention.
Obviously, the described embodiments are only a part of thelu101852 embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.
Example 1 Please refer to FIGS. 1-3. The present invention provides a technical solution for a device for measuring negative pressure: a device for measuring negative pressure, including a measuring device body 11, a measuring pipe 12, a piston pad 13, a connecting rod 14, and a gas transmission pipe 15 , A storage bag 16, a compression spring 17, and a rubber pad 18, a measuring pipe 12 is provided above the measuring device body 11 inside, the measuring pipe 12 is integrally formed with the measuring device body 11, and a measuring bag 12 is provided with a storage bag 16 at the bottom The air bag 16 is fixedly connected to the measuring tube 12, the bottom of the storage air bag 16 is provided with a gas delivery pipe 15 which is fixedly connected to the storage air bag 16, the interior of the measurement pipe 12 is provided with a piston pad 13, the piston pad 13 is connected to the measurement pipe 12 Fixed connection, the bottom of the piston pad 13 is provided with a connecting rod 14, the connecting rod 14 is fixedly connected with the piston pad 13, the bottom of the connecting rod 14 is provided with a rubber pad 18, the rubber pad 18 is fixedly connected with the reservoir airbag 16, the bottom of the rubber pad 18 A pressure spring 17 is provided, and the pressure spring 17 is fixedly connected to the rubber pad 18.
In this embodiment, the rubber pad 18 and the piston pad 13 can ensure the airtightness of the measuring device, and ensure that the gas inside the storage bag
| lu101852 6 16 will not circulate.
In this embodiment, a device for measuring negative pressure is designed, and the airbag 15 is connected to the external negative pressure gas through the gas pipeline 15, and then the pressure gauge is inserted into the measurement pipeline 12 to make it lift the piston pad 13 and the rubber. The pad 18 is used for pressure measurement. When the pressure gauge is removed after the measurement, the pressure spring 17 will automatically lift the upper rubber pad 18. At this time, under the action of force, the rubber pad 18 will block the measuring pipe 12, which can ensure the gas in the storage bag 16 will not circulate, increasing the air tightness and accuracy of the negative pressure measurement device.
Further, a marking post 151 is provided at the middle position of the outer side wall of the gas pipeline 15, and the marking post 151 is detachably connected to the gas pipeline 15.
In this embodiment, a marking post 151 is provided in the middle of the outer side wall of the gas pipeline 15, and the measuring negative pressure device can be marked through the marking post 151 to avoid confusion.
Further, a fixing rod 171 is provided at the inner bottom end of the pressure spring 17, and the fixing rod 171 is fixedly connected to the pressure spring 17.
In this embodiment, a fixing rod 171 is provided at the inner bottom end of the pressure spring 17 to ensure that the pressure spring 17 does not fall off during operation.
Further, a first accommodating cavity is opened inside the measuring pipe 12, and the first accommodating chamber and the measuring pipe 12 are integrally formed.
lu101852 7 In this embodiment, a first volume cavity is opened inside the measurement pipeline 12, and the pressure gauge can be inserted into the measurement pipeline 12 for measurement through the first volume cavity.
Further, a second accommodating cavity is opened inside the reservoir airbag 16, and the second cavity is integrally formed with the reservoir airbag 16. In this embodiment, a second chamber is opened inside the reservoir airbag 16, and the gas in the gas transmission pipe 15 can be stored.
Further, one end of the gas transmission duct 15 is connected to the inner bottom end of the storage airbag 16, and the storage airbag 16 is fixedly connected to the air transmission duct 15. In this embodiment, one end of the gas transmission pipe 15 is located at the inner bottom end of the reservoir airbag 16, so that the gas in the gas transmission pipe 15 can be transported to the interior of the reservoir airbag 16, and then the negative pressure is measured.
Further, a third volume cavity is opened inside the gas pipeline 15, and the third volume cavity is integrally formed with the gas pipeline 15. In this embodiment, a third volume cavity is provided inside the gas pipeline 15, and the external negative pressure gas can be transported through the gas pipeline through the third volume cavity to ensure the normal use of the negative pressure measurement device.
Further, a sealing valve is fixed on the gas pipeline 15. In this embodiment, the sealing valve can ensure the sealing of the device when it is not measured, and at the same time, it can also seal the device in time after the negative pressure gas is delivered to prevent the measurement result from beinglu101852 8 affected.
The working principle and use process of the present invention: After the present invention is installed, a device for measuring negative pressure is designed, and the gas bag 16 is connected to the external negative pressure gas through the gas pipeline 15, and then the pressure gauge is inserted into the measuring pipeline So that it lifts the piston pad 13 and the rubber pad 18 to perform pressure measurement. When the pressure gauge is removed after the measurement, the pressure spring 17 | will automatically lift the upper rubber pad 18. At this time, the rubber pad 18 is under the force. The measurement pipeline 12 will be blocked, so that the gas in the storage air bag 16 will not be circulated, and the air tightness and accuracy of the measurement negative pressure device will be increased.
Example 2 The difference from Example 1 is that the measuring pipe 12 is coated with a waterproof layer, and the preparation method of the waterproof layer comprises: Take the following raw materials for each component by weight: 19.3 parts of acrylate, 12.6 parts of epoxy resin, 5 parts of dimethyl phosphate, 0.9 parts of ethyl acetate, 1.5 parts of trichloroethylene, 3.4 parts of lemon oil, 1.1 parts of urea, 10 parts of absolute ethanol.
S1. Prefabricated organic solvent: mix acrylate, epoxy resin, dimethyl phosphate, and lemon oil, heat to 36 ° C, stir evenly, and keep warm for 8 minutes; S2. Preparation of waterproof coating: add ethyl acetate, trichloroethylene, urea, and absolute ethanol to the organic solvent in S1 in sequence. After stirring evenly, heat the temperature to 45 ° C and hold for 10 minutes
9 lu101852 S3. Treatment: Ultrasonic treatment of the water-repellent coating made by S2 for 15min, then cooling to room temperature and stirring at 1500r / min speed for 0.5h; S4. Coating: The waterproof coating obtained by S3 is evenly coated on the surface of the measuring pipe 12 by electrostatic coating; S5. Drying: Place the measuring pipe 12 obtained by S4 in a cool and ventilated place and blow dry for 5 hours.
In this embodiment, the movement of the piston pad 13 affects the accuracy of | the final data. If there are water droplets on the measurement pipe 12, it will inevitably cause a large error in the measurement result, so the measurement pipe 12 is coated with a waterproof layer, to prevent external penetration of moisture, to ensure the normal movement of the piston pad 13, to ensure the accuracy of the measurement results.
Example 3 The difference from Example 2 is that the specific gravity of the formula is modified. The modified formula is: Take the following raw materials for each component by weight: 21.5 parts of acrylate, 14.2 parts of epoxy resin, 6 parts of dimethyl phosphate, 1.3 parts of ethyl acetate, 2.5 parts of trichloroethylene, 5.2 parts of lemon oil, 2.3 parts of urea, 15 parts of absolute ethanol.
S1. Prefabricated organic solvent: mix acrylate, epoxy resin, dimethyl phosphate, and lemon oil, heat to 36 ° C, stir evenly, and keep warm for 8 minutes; S2. Preparation of waterproof coating: add ethyl acetate, trichloroethylene, urea, and absolute ethanol to the organic solvent in S1 in sequence. After stirring evenly,
lu101852 heat the temperature to 45 ° C and hold for 10 minutes; S3. Treatment: Ultrasonic treatment of the water-repellent coating made by S2 for 15min, then cooling to room temperature and stirring at 1500r / min speed for 0.5h; S4. Coating: The waterproof coating obtained by S3 is evenly coated on the surface of the measuring pipe 12 by electrostatic coating; S5. Drying: Place the measuring pipe 12 obtained by S4 in a cool and ventilated place and blow dry for 5 hours.
In this embodiment, the proportion of the formula is modified and kept for | comparison, so as to obtain the optimal formula.
Example 4 The difference from Example 2 is that the specific gravity of the formula is modified. The modified formula is: Take the following raw materials for each component by weight: 20.4 parts of acrylate, 13.4 parts of epoxy resin, 5.5 parts of dimethyl phosphate, 1.1 parts of ethyl acetate, 2 parts of trichloroethylene, 4.3 parts of lemon oil, 1.7 parts of urea, 12.5 parts of absolute ethanol.
S1. Prefabricated organic solvent: mix acrylate, epoxy resin, dimethyl phosphate, and lemon oil, heat to 36 ° C, stir evenly, and keep warm for 8 minutes: S2. Preparation of waterproof coating: add ethyl acetate, trichloroethylene, urea, and absolute ethanol to the organic solvent in S1 in sequence. After stirring evenly, heat the temperature to 45 ° C and hold for 10 minutes; S3. Treatment: Ultrasonic treatment of the water-repellent coating made by S2 for 15min, then cooling to room temperature and stirring at 1500r / min speed for 0.5h;
1 1u101852 S4. Coating: The waterproof coating obtained by S3 is evenly coated on the surface of the measuring pipe 12 by electrostatic coating; S5. Drying: Place the measuring pipe 12 obtained by S4 in a cool and ventilated place and blow dry for 5 hours.
In this embodiment, the proportion of the formula is modified and kept for comparison, so as to obtain the optimal formula.
The water resistance and peel strength of the measuring pipes 12 coated with waterproof coatings with different specific gravity in Examples 1, 2, 3, and 4 were tested. For comparison, the data of all examples are summarized based on the data of Example 1. One.
Table 1 EE es rm ewer | wn [em The movement of the piston pad 13 affects the accuracy of the final data. If there are water droplets on the measurement pipe 12, it will inevitably cause a large error in the measurement result, so a waterproof layer is coated on the measurement pipe 12 to prevent outside penetration Moisture ensures the normal movement of the piston pad 13 and ensures the accuracy of the measurement results. It can be seen from the data in the table that after the waterproof coating is applied, the waterproof strength of the measuring pipe 12 has been significantly enhanced, and Example 4 has the best effect, so the optimal raw material formula determined is: 20.4 parts of acrylic ester,
lu101852 ring Oxygen resin 13.4 parts, dimethyl phosphate 5.5 parts, ethyl acetate 1.1 parts, trichloroethylene 2 parts, lemon oil 4.3 parts, urea 1.7 parts, and absolute ethanol
12.5 parts.
Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, and substitutions can be made to these embodiments without departing from the principles and spirit of the present invention And variations, the scope of the invention is defined by the appended claims and their equivalents.
Claims (10)
1. A device for measuring negative pressure, characterized in that it includes a measuring device body (11), a measuring pipe (12), a piston pad (13), a connecting rod (14), a gas transmission pipe (15), and a storage air bag (16) , A pressure spring (17), and a rubber pad (18), the measuring pipe (12) is provided above the inside of the measuring device body (11), the measuring pipe (12) and the measuring device body (11 ) One-piece molding, the storage airbag (16) is provided at the bottom of the measurement pipe (12), the storage airbag (16) is fixedly connected to the measurement pipe (12), and the bottom of the storage airbag (16) The gas pipeline (15) is provided, and the gas pipeline (15) is fixedly connected to the storage air bag (16), and the piston pad (13) is provided inside the measurement pipeline (12). The piston pad (13) is fixedly connected to the measuring pipeline (12), the bottom of the piston pad (13) is provided with the connecting rod (14), and the connecting rod (14) and the piston pad (13) ) Fixed connection, the bottom of the connecting rod (14) is provided with the rubber pad (18), the rubber pad (18) is fixedly connected with the reservoir airbag (16), the bottom of the rubber pad (18) The compression spring (17) is provided, and the compression spring (17) is fixedly connected to the rubber pad (18).
2. The device for measuring negative pressure according to claim 1, characterized in that: a marking post (151) is provided at the middle position of the outer side wall of the gas pipeline (15), and the marking post (151) is connected to all The gas pipeline (15) is detachably connected.
3. The device for measuring negative pressure according to claim 1, characterized in that: the inner bottom end of the pressure spring (17) is provided with a fixing rod (171), and the fixing rod (171) and the pressure spring (17) Fixed connection.
4. The device for measuring negative pressure according to claim 1, characterized in that: a first accommodating cavity is opened inside the measuring pipe (12), the first accommodating chamber is integrated with the measuring pipe (12) forming. |
5. The device for measuring negative pressure according to claim 1, characterized in that: a second accommodating cavity is opened inside the reservoir airbag (16), the second cavity is integrated with the reservoir airbag (16) forming.
6. The device for measuring negative pressure according to claim 1, characterized in that: one end of the gas pipeline (15) and the inner bottom end of the storage airbag (16), and the storage airbag (16 ) Fixedly connected to the gas pipeline (15).
7. The device for measuring negative pressure according to claim 1, characterized in that: a third volume cavity is opened inside the gas pipeline (15), the third volume cavity and the gas pipeline are one piece.
8. The device for measuring negative pressure according to claim 1, wherein a
| lu101852 sealing valve is fixedly arranged on the gas pipeline (15).
9. The device for measuring negative pressure according to claim 1, characterized in that: the measurement pipe (12) is coated with a waterproof layer, and the formula of the waterproof layer is Take the following raw materials for each component by weight: acrylic ester
19.3-21.5 parts, epoxy resin 12.6-14.2 parts, dimethyl phosphate 5-6 parts, ethyl acetate 0.9-1.3 parts, trichloroethylene 1.5-2.5 parts , 3.4-5.2 parts lemon oil, 1.1-2.3 parts urea, 10-15 parts absolute ethanol.
10. A method of manufacturing the waterproof layer of a device for measuring negative pressure according to claim 9, the method is characterized in that it comprises: S1. Prefabricated organic solvent: mix acrylate, epoxy resin, dimethyl phosphate and lemon oil, heat to 32-36 °C, stir evenly, and keep warm for 5-8min; S2. Preparation of waterproof coating: add ethyl acetate, trichloroethylene, urea, and absolute ethanol to the organic solvent in S1 in sequence. After stirring evenly, | heat the temperature to 45 ° C and hold for 10 minutes; S3. Treatment: Ultrasonic treatment of the water-repellent coating prepared by S2 for 12-15min, then cooling to room temperature and stirring at 1500r / min speed for 0.5h; | S4: Coating: The waterproof coating obtained by S3 is evenly coated on the surface of the measuring pipe (12) by electrostatic coating; S5. Drying: Place the measuring tube (12) obtained in S4 in a cool and ventilated place and blow dry for 5-6h.
ee ——
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811609625.2A CN109580078B (en) | 2018-12-27 | 2018-12-27 | Device for measuring negative pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| LU101852A1 true LU101852A1 (en) | 2020-07-02 |
| LU101852B1 LU101852B1 (en) | 2020-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU101852A LU101852B1 (en) | 2018-12-27 | 2018-12-28 | Device for measuring negative pressure |
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| Country | Link |
|---|---|
| CN (1) | CN109580078B (en) |
| LU (1) | LU101852B1 (en) |
| WO (1) | WO2020133195A1 (en) |
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| CN111272203B (en) * | 2020-01-20 | 2021-11-09 | 东营威联化学有限公司 | Industrial control equipment test system |
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| US5452613A (en) * | 1993-10-04 | 1995-09-26 | Granville-Phillips Company | Wide range vacuum gauge |
| CN2279489Y (en) * | 1996-09-25 | 1998-04-22 | 邵德福 | Low-pressure air-filling valve for tyre |
| JP2006284405A (en) * | 2005-04-01 | 2006-10-19 | Gunze Ltd | Simple apparatus for negative pressure test |
| CN2901272Y (en) * | 2005-12-01 | 2007-05-16 | 刘伟 | Tracheal catheter sleeve sac inner pressure monitor |
| CN201022866Y (en) * | 2007-05-12 | 2008-02-20 | 李秀英 | Disposable gastrointestinal decompression device |
| CN201096578Y (en) * | 2007-09-26 | 2008-08-06 | 张琪 | Automobile tire high pressure and low pressure alarm |
| CN101556198B (en) * | 2009-05-22 | 2010-12-08 | 中国电子科技集团公司第三十八研究所 | Device for detecting static pressure of low-speed aerostat |
| CN101798756B (en) * | 2010-01-06 | 2011-11-23 | 东华大学 | Method for preparing biomedical material of static self-assembly modified nano fiber |
| CN102607764A (en) * | 2012-02-27 | 2012-07-25 | 徐州中矿安达矿山科技有限公司 | Multipoint synchronous pressure testing and sampling device |
| CN203881482U (en) * | 2014-05-28 | 2014-10-15 | 榆林学院 | Non-condensable gas partial pressure measurement device |
| CN204287227U (en) * | 2014-12-09 | 2015-04-22 | 天津简仪科技有限公司 | A kind of optical fiber acceleration transducer structure for Structure stress monitoring |
| CN105031791B (en) * | 2015-09-02 | 2017-09-12 | 曹赞 | A kind of inflatable pressure indicating gage |
| CN206802432U (en) * | 2017-06-19 | 2017-12-26 | 刘微 | A kind of water purifier dismounting Water stop mechanism |
| CN207437448U (en) * | 2017-09-23 | 2018-06-01 | 广州天幸机电设备有限公司 | A kind of choked flow protective device of immersible pump |
| CN108905435A (en) * | 2018-09-21 | 2018-11-30 | 南通志乐新材料有限公司 | A kind of water-proof ventilation pipeline filter |
-
2018
- 2018-12-27 CN CN201811609625.2A patent/CN109580078B/en active Active
- 2018-12-28 LU LU101852A patent/LU101852B1/en active IP Right Grant
- 2018-12-28 WO PCT/CN2018/124801 patent/WO2020133195A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| LU101852B1 (en) | 2020-12-14 |
| CN109580078A (en) | 2019-04-05 |
| WO2020133195A1 (en) | 2020-07-02 |
| CN109580078B (en) | 2020-03-06 |
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Effective date: 20201214 |