CN110657915B - Fire extinguisher pressure indicating liquid anti-mixing device - Google Patents
Fire extinguisher pressure indicating liquid anti-mixing device Download PDFInfo
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- CN110657915B CN110657915B CN201910947339.5A CN201910947339A CN110657915B CN 110657915 B CN110657915 B CN 110657915B CN 201910947339 A CN201910947339 A CN 201910947339A CN 110657915 B CN110657915 B CN 110657915B
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- 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
- G01L19/08—Means for indicating or recording, e.g. for remote indication
- G01L19/10—Means for indicating or recording, e.g. for remote indication mechanical
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/50—Testing or indicating devices for determining the state of readiness of the equipment
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Abstract
The invention discloses a fire extinguisher pressure indicating liquid anti-mixing device, which comprises a spherical transparent outer shell and a spherical inner shell, wherein the spherical inner shell is positioned in the transparent outer shell; transparent shell one end fixedly connected with outer tube, the one end integrated into one piece that transparent shell was kept away from to the outer tube has the annular plate. The inner shell is fixedly connected with an inner tube, and one end of the inner tube penetrates through the inner shell; the inner pipe penetrates through the outer pipe; the inner side of the annular plate is connected with a second constant pressure spring, a first constant pressure spring and an annular piston in sequence. The first anti-mixing device is arranged in the outer pipe, and the second anti-mixing device is arranged in the inner pipe. A closed liquid storage cavity is formed among the cylindrical piston, the inner wall of the inner pipe, the threaded passage, the inner wall of the transparent outer shell, the outer wall of the inner shell, the inner wall of the outer pipe, the bent passage and the annular piston; yellow indicating liquid, green indicating liquid and red indicating liquid are sequentially arranged in the liquid storage cavity from the cylindrical piston to the annular piston. Through two anti-mixing devices, the indicating liquid with different colors can be prevented from mixing together.
Description
The application has the following application numbers: 201711425099X
The name is: pressure range display of fire extinguisher
The application date is: 2017-12-25
The divisional application of (1).
Technical Field
The invention belongs to the field of pressure gauges of fire extinguishers, and particularly relates to a pressure indicating liquid anti-mixing device of a fire extinguisher.
Background
Because the surfaces of the prior air pressure gauges of the fire extinguisher are all vertical, the fire extinguisher placed on the ground and in the box is very troublesome to check, and the fire extinguisher needs to be squat down, even the fire extinguisher needs to be taken out of the box and rotated, so that the indication condition of the air pressure gauge can be seen. This is very laborious and time consuming. The applicant's patent application No. 201711425099X entitled indicator of the pressure range of a fire extinguisher solves the above problems, but also encounters a new problem in that indicator liquids of different colors are easily mixed together if the fire extinguisher is shaken vigorously.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the defects in the prior art, the invention designs the indicating device which is convenient for knowing the pressure range of the fire extinguisher.
In order to realize the purpose of the invention, the following technical scheme is adopted for realizing the purpose:
a pressure indicating liquid anti-mixing device of a fire extinguisher comprises a spherical transparent outer shell and a spherical inner shell which is positioned in the transparent outer shell and coaxially arranged with the transparent outer shell; the inner diameter of the transparent outer shell is 1-2mm larger than the outer diameter of the inner shell;
one end of the transparent shell is provided with an opening, an outer tube is fixedly connected to the opening, and an annular plate is integrally formed at one end of the outer tube, which is far away from the transparent shell;
two symmetrical opening parts are formed at two ends of the inner shell along the same diameter, wherein the inner side of one opening part is fixedly connected with an inner tube, and the other end of the inner tube penetrates through the other opening part; the inner pipe penetrates through the outer pipe; one end of the inner tube, which is positioned outside the transparent shell, is in threaded connection with a connecting cap, and the connecting cap is integrally formed with a connecting tube connected with a fire extinguisher bottle;
the inner annular wall of the annular plate is fixedly connected with the outer wall of the inner pipe; a second constant pressure spring is fixedly connected to the inner side of the annular plate, a first constant pressure spring is fixedly connected to one end, far away from the annular plate, of the second constant pressure spring, and an annular piston is fixedly connected to one end, far away from the second constant pressure spring, of the first constant pressure spring; the second constant pressure spring, the first constant pressure spring and the annular piston are sleeved outside the inner pipe; a cylindrical piston matched with the wall of the inner pipe is arranged in the inner pipe;
a first anti-mixing device is arranged in the outer pipe, and a second anti-mixing device is arranged in the inner pipe; the first anti-mixing device comprises a bent pipe with a continuously bent pipe wall and two annular partition plates fixedly connected with one of two ends of the bent pipe respectively; the two annular partition plates are respectively and fixedly connected with the inner wall of the outer pipe, and one of the annular partition plates is close to the opening of the transparent outer cover; a bending passage is formed in the bending pipe, a plurality of arc-shaped holes which are uniformly arranged along the circumferential direction of the annular partition plate are formed in the annular partition plate, and the width of each arc-shaped hole is 1-2 mm; the bent passage is communicated with the arc-shaped hole; the second anti-mixing device comprises a threaded pipe and two circular clapboards connected to two ends of the threaded pipe; one end of the threaded pipe is fixedly connected with a circular clapboard; the two circular partition plates are respectively and fixedly connected with the inner wall of the inner pipe, and one of the two circular partition plates is positioned on a pipe orifice of the inner pipe far away from the connecting cap; a threaded passage is formed in the threaded pipe, a through hole is formed in the middle of the circular partition plate, and the diameter of the through hole is 1-2 mm; the threaded passage is communicated with the through hole; a closed liquid storage cavity is formed among the cylindrical piston, the inner wall of the inner pipe, the threaded passage, the inner wall of the transparent outer shell, the outer wall of the inner shell, the inner wall of the outer pipe, the bent passage and the annular piston; the liquid storage cavity is stored with three sections of indicating liquid with different colors, and the indicating liquid is yellow indicating liquid, green indicating liquid and red indicating liquid in sequence from the cylindrical piston to the annular piston.
Further optimally: the volumes of the red indicating liquid and the yellow indicating liquid are both 2v, the volume of the green indicating liquid is v, the volume of a space between the outer wall of the inner shell and the inner wall of the outer tube is v, and the volumes of the threaded tube and the bent tube are both v; initial state: yellow indicating liquid is totally arranged in the inner tube, green indicating liquid is arranged in the threaded tube, half of red indicating liquid is arranged between the outer wall of the inner shell and the inner wall of the outer tube, and the other half of the red indicating liquid is arranged in the bent tube.
Compared with the prior art, the invention has the beneficial effects that: the first anti-mixing device is arranged in the outer pipe, the second anti-mixing device is arranged in the inner pipe, the contact area between the indicating liquids with two different colors is reduced, the indicating liquids with two different colors cannot be mixed together when the fire extinguisher is shaken vigorously, and the reliability and the stability of the fire extinguisher are improved.
Drawings
Fig. 1 is an external view schematically showing the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is an enlarged view of fig. 2 at B.
FIG. 4 is a schematic view of the inner shell and inner tube of the present invention.
FIG. 5 is a schematic view of a transparent outer shell and an outer tube according to the present invention.
Fig. 6 is a schematic view of the structure of the connecting cap of the present invention.
FIG. 7 is a schematic view of the internal structure of embodiment 2.
Fig. 8 is a schematic structural view of a second anti-mix device in embodiment 2.
Fig. 9 and 10 are schematic structural views of the first anti-mix device in embodiment 2.
1. A transparent housing; 11. an outer tube; 111. an annular plate; 12. an annular partition plate; 121. an arc-shaped hole; 13. bending the tube; 131. bending the passage; 2. an inner shell; 21. an inner tube; 22. A circular separator plate; 221. a through hole; 23. a threaded pipe; 3. a connecting cap; 31. a connecting pipe; 4. a cylindrical piston; 5. an annular piston; 6. a first constant pressure spring; 7. a second constant pressure spring.
Detailed Description
The following describes in detail an embodiment of the present invention with reference to the accompanying drawings.
Example 1
As shown in fig. 1 to 6, the present embodiment is a pressure range indicator for fire extinguishers, which comprises a spherical transparent outer shell 1, a spherical inner shell 2 coaxially arranged in the transparent outer shell; the inner diameter of the transparent outer shell is 1-2mm larger than the outer diameter of the inner shell.
Transparent shell one end opening, opening part fixedly connected with outer tube 11, the outer tube keeps away from the one end integrated into one piece of transparent shell and has annular plate 111.
Two symmetrical opening parts are formed at two ends of the inner shell 2 along the same diameter, wherein the inner side of one opening part is fixedly connected with an inner tube 21, and the other end of the inner tube penetrates through the other opening part; the inner pipe penetrates through the outer pipe; the end of the inner tube, which is positioned outside the transparent shell, is in threaded connection with a connecting cap 3, and the connecting cap is integrally formed with a connecting pipe 31 connected with a fire extinguisher bottle.
The inner annular wall of the annular plate 111 is fixedly connected with the outer wall of the inner pipe; the inner side of the annular plate 111 is fixedly connected with a second constant pressure spring 7, one end of the second constant pressure spring, far away from the annular plate, is fixedly connected with a first constant pressure spring 6, and one end of the first constant pressure spring, far away from the second constant pressure spring, is fixedly connected with an annular piston 5; the second constant pressure spring, the first constant pressure spring and the annular piston are sleeved outside the inner pipe; a cylindrical piston 4 matched with the wall of the inner pipe is arranged in the inner pipe.
A closed liquid storage cavity is formed among the cylindrical piston, the inner wall of the inner pipe, the inner wall of the transparent outer shell, the outer wall of the inner shell, the inner wall of the outer pipe and the annular piston; the liquid storage cavity is stored with three sections of indicating liquid with different colors, the indicating liquid, the green indicating liquid and the red indicating liquid are sequentially arranged from the cylindrical piston to the annular piston, the yellow indicating liquid and the green indicating liquid are arranged in the inner tube, the red indicating liquid is filled in the space between the transparent outer shell and the inner shell, and the green indicating liquid is not dissolved with the other two types.
The yellow indicating liquid, the green indicating liquid and the red indicating liquid are respectively in an amount which can at least fill the space between the transparent outer shell and the inner shell.
Constant pressure springs are known in the art, and such as swiss document CH645959a5 and chinese application No. 2016107879803 disclose technical features of constant pressure springs. The constant pressure spring is compressed when the pressure reaches the pressure value of the constant pressure spring, and the gas is diffused all around under the action of the gas pressure, so that the gas pressure provides a continuous forward force, and the constant pressure spring is completely compressed once the constant pressure spring starts to be compressed.
As for the constant pressure spring having an error within a certain range, it is possible to compensate by appropriately increasing the amount of each indicating liquid, thereby reducing the error. For those skilled in the art, creative labor is not needed, and the problem is easily solved.
The following description will be made by taking a dry chemical extinguisher having an air pressure of 1-1.4MPa in the green region as an example:
1. when the pressure of the fire extinguisher is less than 1MPa, the two constant pressure springs can not be compressed, the fire extinguisher is in an initial state at the moment, the red indicating liquid is filled in the space between the transparent outer shell and the inner shell, and the pressure of the fire extinguisher displayed by the display is red and indicates the underpressure.
2. When the pressure of the fire extinguisher is more than or equal to 1MPa (but not more than 1.4 MPa), the first constant pressure spring starts to be compressed and is completely compressed, the red indicating liquid is completely pressed into the outer tube, and the green indicating liquid is filled in the space between the transparent outer shell and the inner shell. At the moment, the display of the display is green, and the pressure of the fire extinguisher is normal.
When the pressure is reduced to less than 1MPa, the first constant pressure spring is completely reset and pushes the annular piston, so that the red indicating liquid enters and fills the space between the transparent outer shell and the inner shell, and the green indicating liquid is pressed into the inner tube to return to the condition of the indication 1.
3. When the pressure in the fire extinguisher is more than 1.4MPa, the second constant pressure spring starts to be compressed and is completely compressed, the green indicating liquid is completely pressed into the outer tube, and the yellow indicating liquid is pressed into and fills the space between the transparent outer shell and the inner shell. At the moment, the display displays that the pressure is yellow, and the pressure of the fire extinguisher is overlarge.
When the pressure is reduced to 1-1.4MPa, the second constant pressure spring resets to extrude the annular piston, so that the green indicating liquid is pressed into and fills the space between the transparent outer shell and the inner shell, the yellow indicating liquid is pressed into the inner tube, the display displays that the pressure is green at the moment, and the pressure of the fire extinguisher is normal.
Example 2
A pressure range display of a fire extinguisher comprises a spherical transparent outer shell and a spherical inner shell which is positioned in the transparent outer shell and coaxially arranged with the transparent outer shell; the inner diameter of the transparent outer shell is 1-2mm larger than the outer diameter of the inner shell.
Transparent shell one end opening, opening part fixedly connected with outer tube, the outer tube is kept away from the one end integrated into one piece of transparent shell and is had the annular plate.
Two symmetrical opening parts are formed at two ends of the inner shell along the same diameter, wherein the inner side of one opening part is fixedly connected with an inner tube, and the other end of the inner tube penetrates through the other opening part; the inner pipe penetrates through the outer pipe; one end of the inner tube, which is positioned outside the transparent shell, is in threaded connection with a connecting cap, and the connecting cap is integrally formed with a connecting pipe connected with a fire extinguisher bottle.
The inner annular wall of the annular plate is fixedly connected with the outer wall of the inner pipe; a second constant pressure spring is fixedly connected to the inner side of the annular plate, a first constant pressure spring is fixedly connected to one end, far away from the annular plate, of the second constant pressure spring, and an annular piston is fixedly connected to one end, far away from the second constant pressure spring, of the first constant pressure spring; the second constant pressure spring, the first constant pressure spring and the annular piston are sleeved outside the inner pipe; and a cylindrical piston matched with the wall of the inner pipe is arranged in the inner pipe.
As shown in fig. 7-10, a first anti-mixing device is installed in the outer pipe, and a second anti-mixing device is installed in the inner pipe; the first anti-mixing device comprises a bent pipe 13 with a continuously bent pipe wall and two annular partition plates 12 fixedly connected with one of two ends of the bent pipe respectively; the two annular partition plates are respectively and fixedly connected with the inner wall of the outer pipe, and one of the annular partition plates is close to the opening of the transparent outer cover; a bending passage 131 is formed in the bending pipe, a plurality of arc holes 121 which are uniformly arranged along the circumferential direction of the annular partition plate are formed in the annular partition plate, and the width of each arc hole is 1-2 mm; the bent passage is communicated with the arc-shaped hole; the second anti-mixing device comprises a threaded pipe 23 and two circular clapboards 22 connected to two ends of the threaded pipe; one end of the threaded pipe is fixedly connected with a circular clapboard; the two circular partition plates are respectively and fixedly connected with the inner wall of the inner pipe, and one of the two circular partition plates is positioned on a pipe orifice of the inner pipe far away from the connecting cap; a threaded passage is formed in the threaded pipe, a through hole 221 is formed in the middle of the circular partition plate, and the diameter of the through hole is 1-2 mm; the threaded passage communicates with the through hole.
A closed liquid storage cavity is formed among the cylindrical piston, the inner wall of the inner pipe, the threaded passage, the inner wall of the transparent outer shell, the outer wall of the inner shell, the inner wall of the outer pipe, the bent passage and the annular piston; the liquid storage cavity is internally stored with three sections of indicating liquid with different colors, and the indicating liquid sequentially comprises yellow indicating liquid, green indicating liquid and red indicating liquid from the cylindrical piston to the annular piston, wherein the volumes of the red indicating liquid and the yellow indicating liquid are both 2v, the volume of the green indicating liquid is v, the volume of a space between the outer wall of the inner shell and the inner wall of the outer tube is v, and the volumes of the threaded tube and the bent tube are both v; initial state: yellow indicating liquid is totally arranged in the inner tube, green indicating liquid is arranged in the threaded tube, half of red indicating liquid is arranged between the outer wall of the inner shell and the inner wall of the outer tube, and the other half of the red indicating liquid is arranged in the bent tube.
The following description will be made by taking a dry chemical extinguisher having an air pressure of 1-1.4MPa in the green region as an example:
1. when the pressure of the fire extinguisher is less than 1MPa, the two constant pressure springs can not be compressed, the fire extinguisher is in an initial state at the moment, the red indicating liquid is filled in the space between the transparent outer shell and the inner shell, and the pressure of the fire extinguisher displayed by the display is red and indicates the underpressure.
2. When the pressure of the fire extinguisher is greater than or equal to 1MPa (but not greater than 1.4 MPa), the first constant pressure spring starts to be compressed and is completely compressed, the red indicating liquid is completely pressed into the bent pipe and the outer pipe, the green indicating liquid is pressed into and fills the space between the transparent outer shell and the inner shell, and half of the yellow indicating liquid is pressed into the threaded pipe. At the moment, the display of the display is green, and the pressure of the fire extinguisher is normal.
When the pressure is reduced to less than 1MPa, the first constant pressure spring is completely reset and pushes the annular piston, so that half of the red indicating liquid enters and fills the space between the transparent outer shell and the inner shell, the green indicating liquid is pressed into the threaded pipe, and the yellow indicating liquid is pressed into the inner pipe, and the condition of 1 indication is returned.
3. When the pressure in the fire extinguisher is more than 1.4MPa, the second constant pressure spring starts to be compressed and is completely compressed, the red indicating liquid is completely pressed into the outer pipe, the green indicating liquid is completely pressed into the bent pipe, half of the yellow indicating liquid is pressed into and fills the space between the transparent outer shell and the inner shell, and the other half of the yellow indicating liquid enters the threaded pipe. At the moment, the display displays that the pressure is yellow, and the pressure of the fire extinguisher is overlarge.
When the pressure is reduced to 1-1.4MPa, the second constant-pressure spring resets and extrudes the annular piston, so that the green indicating liquid is pressed into and fills the space between the transparent outer shell and the inner shell, half of the yellow indicating liquid is in the threaded pipe, the other half of the yellow indicating liquid is in the inner pipe, the display displays that the pressure is green at the moment, and the pressure of the fire extinguisher is normal.
The present embodiment is structurally different from embodiment 1 in that a first anti-mixing device is installed in the outer pipe and a second anti-mixing device is installed in the inner pipe. This has the following advantages compared to the examples: the contact area between the two indicating liquids with different colors is reduced, the indicating liquids with different colors can not be mixed together when the fire extinguisher is shaken vigorously, and the reliability and the stability of the fire extinguisher are improved.
The three indicator liquids of the two embodiments can be selected by those skilled in the art according to actual conditions, and one scheme of the three indicator liquids of the embodiment 1 and the embodiment 2 is provided as follows:
yellow indicating liquid: a yellow iron sulfate solution was used.
Green indicator liquid: the green high-quality No. 97 gasoline is adopted.
Red indicator liquid: a red potassium permanganate solution was used.
The three indicating liquids are configured to have substantially the same density, and no delamination occurs. The density of the yellow indicator liquid and the red indicator liquid can be controlled by adding ferric sulfate or potassium permanganate. The green indicator liquid needs to be dissolved in a proper amount of carbon tetrachloride in gasoline to improve the density, so that the density of the green indicator liquid is basically the same as that of the other two indicator liquids.
Claims (2)
1. A pressure indicating liquid anti-mixing device of a fire extinguisher comprises a spherical transparent outer shell and a spherical inner shell which is positioned in the transparent outer shell and coaxially arranged with the transparent outer shell; the inner diameter of the transparent outer shell is 1-2mm larger than the outer diameter of the inner shell;
one end of the transparent shell is provided with an opening, an outer tube is fixedly connected to the opening, and an annular plate is integrally formed at one end of the outer tube, which is far away from the transparent shell;
two symmetrical opening parts are formed at two ends of the inner shell along the same diameter, wherein the inner side of one opening part is fixedly connected with an inner tube, and the other end of the inner tube penetrates through the other opening part; the inner pipe penetrates through the outer pipe; one end of the inner tube, which is positioned outside the transparent shell, is in threaded connection with a connecting cap, and the connecting cap is integrally formed with a connecting tube connected with a fire extinguisher bottle;
the inner annular wall of the annular plate is fixedly connected with the outer wall of the inner pipe; a second constant pressure spring is fixedly connected to the inner side of the annular plate, a first constant pressure spring is fixedly connected to one end, far away from the annular plate, of the second constant pressure spring, and an annular piston is fixedly connected to one end, far away from the second constant pressure spring, of the first constant pressure spring; the second constant pressure spring, the first constant pressure spring and the annular piston are sleeved outside the inner pipe; a cylindrical piston matched with the wall of the inner pipe is arranged in the inner pipe; the method is characterized in that:
a first anti-mixing device is arranged in the outer pipe, and a second anti-mixing device is arranged in the inner pipe; the first anti-mixing device comprises a bent pipe with a continuously bent pipe wall and two annular partition plates fixedly connected with one of two ends of the bent pipe respectively; the two annular partition plates are respectively and fixedly connected with the inner wall of the outer pipe, and one of the annular partition plates is close to the opening of the transparent outer cover; a bending passage is formed in the bending pipe, a plurality of arc-shaped holes which are uniformly arranged along the circumferential direction of the annular partition plate are formed in the annular partition plate, and the width of each arc-shaped hole is 1-2 mm; the bent passage is communicated with the arc-shaped hole; the second anti-mixing device comprises a threaded pipe and two circular clapboards connected to two ends of the threaded pipe; one end of the threaded pipe is fixedly connected with a circular clapboard; the two circular partition plates are respectively and fixedly connected with the inner wall of the inner pipe, and one of the two circular partition plates is positioned on a pipe orifice of the inner pipe far away from the connecting cap; a threaded passage is formed in the threaded pipe, a through hole is formed in the middle of the circular partition plate, and the diameter of the through hole is 1-2 mm; the threaded passage is communicated with the through hole; a closed liquid storage cavity is formed among the cylindrical piston, the inner wall of the inner pipe, the threaded passage, the inner wall of the transparent outer shell, the outer wall of the inner shell, the inner wall of the outer pipe, the bent passage and the annular piston; the liquid storage cavity is stored with three sections of indicating liquid with different colors, and the indicating liquid is yellow indicating liquid, green indicating liquid and red indicating liquid in sequence from the cylindrical piston to the annular piston.
2. The anti-mixing device for the pressure indicator liquid of the fire extinguisher according to claim 1, wherein: the volumes of the red indicating liquid and the yellow indicating liquid are both 2v, the volume of the green indicating liquid is v, the volume of a space between the outer wall of the inner shell and the inner wall of the outer tube is v, and the volumes of the threaded tube and the bent tube are both v; initial state: yellow indicating liquid is totally arranged in the inner tube, green indicating liquid is arranged in the threaded tube, half of red indicating liquid is arranged between the outer wall of the inner shell and the inner wall of the outer tube, and the other half of the red indicating liquid is arranged in the bent tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910947339.5A CN110657915B (en) | 2017-12-25 | 2017-12-25 | Fire extinguisher pressure indicating liquid anti-mixing device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711425099.XA CN108132122B (en) | 2017-12-25 | 2017-12-25 | A kind of fire extinguisher pressure limit display |
| CN201910947339.5A CN110657915B (en) | 2017-12-25 | 2017-12-25 | Fire extinguisher pressure indicating liquid anti-mixing device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711425099.XA Division CN108132122B (en) | 2017-12-25 | 2017-12-25 | A kind of fire extinguisher pressure limit display |
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| CN110657915A CN110657915A (en) | 2020-01-07 |
| CN110657915B true CN110657915B (en) | 2021-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711425099.XA Active CN108132122B (en) | 2017-12-25 | 2017-12-25 | A kind of fire extinguisher pressure limit display |
| CN201910947339.5A Active CN110657915B (en) | 2017-12-25 | 2017-12-25 | Fire extinguisher pressure indicating liquid anti-mixing device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711425099.XA Active CN108132122B (en) | 2017-12-25 | 2017-12-25 | A kind of fire extinguisher pressure limit display |
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Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH041956Y2 (en) * | 1986-07-30 | 1992-01-23 | ||
| CN2077122U (en) * | 1990-05-17 | 1991-05-15 | 胡志俊 | Liquid display pressure gauge for fire fighting |
| CN1074729C (en) * | 1996-05-07 | 2001-11-14 | 创新企业有限公司 | Pressure indicating device |
| US6167912B1 (en) * | 1997-11-25 | 2001-01-02 | Patrick J. Stephens | Method and composition for grouting water-flooded conduits |
| KR200256308Y1 (en) * | 2001-08-17 | 2001-12-24 | 코리아세이프티닷컴(주) | Powder fire-extinguisher with transparency window |
| US7412877B1 (en) * | 2005-10-24 | 2008-08-19 | Hongfeng Bi | High pressure viscometer with chamber preventing sample contamination |
| CN201974270U (en) * | 2011-02-22 | 2011-09-14 | 杭州吉星仪表机械有限公司 | Pressure display of film-type fire extinguisher |
| US9482220B2 (en) * | 2012-06-07 | 2016-11-01 | Asco Power Technologies, L.P. | Dual redundancy in fire pump controllers |
| CN204319572U (en) * | 2014-11-14 | 2015-05-13 | 天津港海科技有限公司 | A kind of aerosol pot type fire extinguisher with pressure-display device |
| CN106983974B (en) * | 2016-10-31 | 2019-08-09 | 消防贸易私营有限公司 | A kind of fire extinguisher of multifunctional equipment |
| CN106679855B (en) * | 2017-01-17 | 2019-03-05 | 太原理工大学 | A kind of device and method mixing discoloration monitoring unidirectional force using liquid |
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2017
- 2017-12-25 CN CN201711425099.XA patent/CN108132122B/en active Active
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| CN108132122A (en) | 2018-06-08 |
| CN108132122B (en) | 2019-11-08 |
| CN110657915A (en) | 2020-01-07 |
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