CN113421394A - Whole detection control system of domestic gas of intelligence - Google Patents
Whole detection control system of domestic gas of intelligence Download PDFInfo
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- CN113421394A CN113421394A CN202110602357.7A CN202110602357A CN113421394A CN 113421394 A CN113421394 A CN 113421394A CN 202110602357 A CN202110602357 A CN 202110602357A CN 113421394 A CN113421394 A CN 113421394A
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- 238000001514 detection method Methods 0.000 title claims abstract description 48
- 230000002265 prevention Effects 0.000 claims abstract description 16
- 230000009471 action Effects 0.000 claims abstract description 13
- 238000004880 explosion Methods 0.000 abstract description 10
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 119
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 230000007306 turnover Effects 0.000 description 5
- 239000002737 fuel gas Substances 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 239000003034 coal gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000010763 heavy fuel oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/06—Fire prevention, containment or extinguishing specially adapted for particular objects or places of highly inflammable material, e.g. light metals, petroleum products
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/16—Combustible gas alarms
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Public Health (AREA)
- Safety Valves (AREA)
- Fire Alarms (AREA)
Abstract
The invention discloses an intelligent household gas whole-course detection control system which comprises a host module, a plurality of extension detection modules and a gas control module, wherein the host module is respectively connected with the extension detection modules and the gas control module; an extension detection module: a gas leakage detection unit; the gas control module: the gas stove valve, the explosion-proof valve and the fireproof and fire-proof groove unit; a host module: and receiving and processing data detected by the extension detection module, and controlling the extension detection module and the gas control module to perform exhaust and fire prevention actions if the detected signal exceeds a threshold value. The hidden danger of fire caused by explosion of the gas pipeline due to gas leakage is eliminated. The lower part of the gas pipe is provided with a fireproof fire-avoiding groove, open fire can be heated for a prolonged period, a gas pipeline is protected, and the gas whole-course detection control system can complete the exhaust, explosion-proof and fire-avoiding operation. When a fire disaster happens, the gas furnace valve is automatically controlled to be opened, the explosion-proof valve is closed, residual gas in the pipeline is discharged, and the pipeline explosion is prevented.
Description
Technical Field
The invention relates to the field of gas protection devices, in particular to an intelligent household gas whole-process detection control system.
Background
With the improvement of living standard of people, natural gas is increasingly popularized. The natural gas pipeline of registering one's residence is the pipeline that introduces the natural gas from pipeline indoor for being connected to cooking utensils, in daily life, to the improper use of gas or equipment all probably arouse the gas leakage, often can appear that the gas leaks and cause dangerous accidents such as explosion, conflagration, in daily top of a kitchen range use, often use naked light, the conflagration very easily takes place when having combustible object in the kitchen, when the kitchen takes place the conflagration, there is a large amount of gas in the gas pipeline, the gas of pipeline takes place a little and leaks and will arouse the problem of pipeline gas explosion. For example, a "fire alarm gas shutoff linkage system" disclosed in chinese patent literature, whose publication No. CN210865001U includes a fire alarm controller and a combustible gas alarm controller provided in a building fire control center, a gas shutoff valve is provided on a gas pipeline in a kitchen area of a building, the combustible gas alarm controller is electrically connected to a control module of the gas shutoff valve to close the gas shutoff valve when receiving an alarm signal, an alarm signal output terminal of the fire alarm controller is electrically connected to an alarm signal input terminal of the combustible gas alarm controller through a connecting wire to send an alarm signal to the combustible gas alarm controller when receiving a fire alarm signal from a fire detector or a fire alarm trigger device, thereby performing linkage gas shutoff when a fire breaks out in the building. Above-mentioned scheme has just cut off the gas supply, still leaves remaining gas in the gas pipeline, still has the potential safety hazard.
Disclosure of Invention
The invention provides a control system capable of detecting the gas leakage condition in the whole process, aiming at overcoming the problems that the gas pipeline in the prior art is easy to leak and the gas cannot be detected and controlled in the whole process.
In order to achieve the purpose, the invention adopts the following technical scheme:
an intelligent household gas whole-course detection control system comprises a host module, a plurality of extension detection modules and a gas control module, wherein the host module is respectively connected with the extension detection modules and the gas control module; a plurality of extension detection modules can be arranged in rooms around the kitchen and are in wired and/or wireless connection with the host computer module.
An extension detection module: the fire-proof and fire-proof device comprises a gas leakage detection unit and a fire-proof and fire-proof groove unit; the gas leakage detection unit is a temperature sensor, a smoke sensor and a gas sensor. Detecting the smoke concentration, temperature and melting degree in the surrounding environment; whether natural gas, liquefied gas and coal gas are leaked or not is detected, detected data are fed back to the host module, and if the host module judges that the leakage of the coal gas or the abnormal temperature reaches a preset fire early warning threshold value, the branch detection module and the coal gas control module are controlled to perform exhaust fire-avoiding actions.
The gas control module: a gas valve control valve, an explosion-proof valve control valve;
a host module: and sending a detection signal to the extension detection module, receiving and processing data detected by the extension detection module, and controlling the extension detection module and the gas control module to perform an exhaust fire-avoiding action if the detected signal exceeds a threshold value. The extension detection module detects the safety condition of the gas and controls the gas control module to emit exhaust and fire-prevention actions and emit alarm signals.
Preferably, the fire prevention and fire prevention groove unit main part is H-shaped, the H-shaped main part is divided into an upper pipeline groove and a fire prevention groove arranged below the upper pipeline groove, and a cylindrical guide pipe is further arranged in the upper pipeline groove. The fire prevention is kept away the fire groove and is fixed on the wall of gas furnace top, the gas pipeline penetrates through the wall body and wears out after keeping away fire groove pipe and be connected with the gas furnace, and cylindric pipe forms explosion-proof safety cover in the gas pipeline outside, plays explosion-proof and the thermal-insulated effect of certain degree.
Preferably, the gas furnace valve is a three-way valve arranged on a gas pipeline between one end of the fireproof fire-avoiding groove and the gas furnace, and the explosion-proof valve is a two-way valve arranged on a gas pipeline at the other end of the fireproof fire-avoiding groove. The explosion-proof valve is a normally open valve, the gas furnace valve is a normally closed valve, and when the gas furnace valve is used, the first outlet and the second outlet of the valve are opened by the gas furnace valve to use the gas.
Preferably, the first outlet of the gas furnace valve is communicated with the gas pipeline, the first outlet faces the gas furnace, the second outlet is communicated with the gas pipeline and faces away from the gas furnace, and the third outlet faces the fire-avoiding groove. When the exhaust fire-avoiding action is executed, the explosion-proof valve is closed to cut off the external gas from entering the gas pipeline in the kitchen, the first outlet of the gas furnace valve is closed, the third outlet of the gas furnace valve is opened, the residual gas in the pipeline is discharged, and the hidden danger of fire hazard caused by explosion of the gas pipeline due to gas leakage is eliminated.
Preferably, the exhaust fire-avoiding device is used as a host module to send signals to the gas control module to control the explosion-proof valve to close and control the second outlet and the third outlet of the gas furnace valve to open. Residual fuel gas in the pipeline is discharged, and the hidden danger of fire caused by explosion of the fuel gas pipeline due to fuel gas leakage is eliminated.
Preferably, the explosion-proof valve is arranged outside the kitchen. The explosion-proof valve is a micro-electric valve, and the main control module detects the safety condition of the fuel gas through the extension detection module and controls the fuel gas control module to open and close. The extension detection module can be arranged in a kitchen or a room beside the kitchen, and is in wired or wireless connection with the host module.
Preferably, the host module further comprises a timing switch module, the timing switch module can be used for setting countdown, signals are transmitted to the host module after the countdown is completed, and the host module receives the signals to control the explosion-proof valve and/or the gas stove valve to be closed. If the user needs to stop burning when the countdown is not reached, the gas furnace valve can be closed by manually pressing a button, and the dangerous hidden danger that the user forgets to close the gas valve can be eliminated when the user uses the timing closing gas valve, so that the user can safely and reliably use the gas.
As preferred, H shape fire prevention groove unit of keeping away comprises two first risers and the second riser that are parallel to each other and the diaphragm of setting between first riser and second riser, be equipped with a plurality of bolt holes on the first riser, the bolt hole runs through first riser. The fire-proof and fire-proof groove is fixed on the wall through a bolt hole.
Preferably, the lower surface of the second vertical plate is provided with a turning plate, the turning plate is hinged to the lower surface of the second vertical plate, the turning plate is provided with an electromagnetic lock, the electronic lock is electrically connected with the host module, and the end face of the turning plate can be fixed with the first vertical plate by the electronic lock after the turning plate is turned up. When the electronic lock is locked, magnetic force can be generated, the turning plate and the first vertical plate are fixed in a magnetic attraction mode, the turning plate is folded and fixed with the first vertical plate to save space when no gas leakage occurs, the operation space of a user is increased, and the edge of the turning plate is folded to increase the use safety.
Preferably, the exhaust fire-fighting action further comprises opening an electromagnetic lock. The electromagnetic lock loses magnetic force after the electromagnetic lock is opened, turns over the board and forms the fire-sheltering groove along with the action of gravity around articulated department is turned down, and the fire-sheltering groove meets open fire and can the extension time rise in temperature, and protection gas pipeline ensures that the whole detection control system of gas can accomplish the explosion-proof fire-sheltering operation of exhausting.
Therefore, the invention has the following beneficial effects: (1) the timing switch of the gas valve is combined with the safety protection device of the fire-proof and fire-avoiding groove of the gas pipeline, so that the hidden danger of fire hazard caused by explosion of the gas pipeline due to gas leakage is eliminated. (2) The lower part of the gas pipe is provided with a fireproof fire-avoiding groove, open fire can be heated for a prolonged period, a gas pipeline is protected, and the gas whole-course detection control system can complete the exhaust, explosion-proof and fire-avoiding operation. (3) When a fire disaster happens, the gas furnace valve is automatically controlled to be opened, the explosion-proof valve is closed, residual gas in the pipeline is discharged, and the pipeline explosion is prevented.
Drawings
Fig. 1 is a block diagram of the structure of an embodiment of the present invention.
Fig. 2 is a schematic structural view of a fire prevention and prevention groove according to an embodiment of the present invention.
FIG. 3 is a schematic view of a folding structure of a flap of the fireproof fire-proof slot according to an embodiment of the present invention.
In the figure: 1. first riser 2, second riser 3, bolt hole 4, diaphragm 5, pipe 6, turn over board 7, electromagnetic lock.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings.
Example (b):
as shown in fig. 1-3, whole detection control system of whole of intelligence domestic gas, including a host computer module, gas control module and extension detection module, host computer module and gas control module and extension detection module are connected respectively, host computer module sends detected signal to extension detection module, receive and handle the data that extension detection module detected, if the signal that detects surpasss the threshold value then control extension detection module and gas control module and make the action of exhausting and keeping away the fire, extension detection module is temperature sensor, smoke transducer, gas sensor, gas control module is gas furnace valve, explosion-proof valve and fire prevention and keeps away fire groove unit, gas sensor sets up in the kitchen, smoke transducer sets up in the room on kitchen next door, extension detection module and host computer module wireless connection.
The fire prevention is kept away fire groove unit main part and is the H shape, and the H shape main part comprises two risers 1 and the second riser 2 that are parallel to each other and the diaphragm 4 of setting between riser 1 and second riser 2, and the H shape main part is according to upper and lower dividable pipeline groove and the fire prevention groove of setting in the pipeline groove below, goes up the pipeline inslot and still is equipped with cylindric pipe 5, and 2 lower surfaces of second riser are equipped with and turn over board 6, turn over board 6 and second riser 2 lower surface articulated, turn over and be equipped with electromagnetic lock 7 on the board 6, the electronic lock is connected with the host computer module electricity, turn over 6 usable electronic locks of board 6 terminal surfaces of turning over after turning over board 6 and turn up and fix with riser 1. When the electronic lock is locked, magnetic force is generated, the turning plate 6 and the first vertical plate 1 are fixed in a magnetic absorption mode, when no gas leakage occurs, the turning plate 6 is folded and fixed with the first vertical plate 1, space is saved, the operation space of a user is increased, the edge of the turning plate 6 is folded to increase the use safety, when exhaust fire avoidance is performed, the electromagnetic lock 7 is opened to enable the electromagnetic lock 7 to lose the magnetic force, the turning plate 6 is turned down around a hinge joint along with the action of gravity to form a fire avoidance groove, the temperature of the fire avoidance groove can be prolonged when exposed fire occurs, a gas pipeline is protected, the gas whole-course detection control system can complete exhaust explosion-proof fire avoidance operation, the first vertical plate 1 is provided with a plurality of bolt holes 3, the fire-proof fire avoidance groove is fixed on the wall above the gas furnace through the bolt holes 3, the gas pipeline penetrates through the wall body and penetrates through the fire avoidance groove guide pipe 5 to be connected with the gas furnace, and the cylindrical guide pipe 5 forms an explosion-proof protective cover outside the gas pipeline, has the functions of explosion prevention and heat insulation to a certain degree.
The gas stove valve is a three-way microcurrent durable explosion-proof gas valve, the gas stove valve is arranged on a gas pipeline between one end of the fire-proof fire-avoiding groove and the gas stove, a first outlet faces the gas stove and is communicated with the gas pipeline, a second outlet is communicated with the gas pipeline and faces away from the gas stove, and a third outlet faces the fire-avoiding groove. The explosion-proof valve is a two-way micro-current durable explosion-proof gas valve arranged on a gas pipeline at the other end of the fireproof fire-proof groove, the explosion-proof valve is arranged outside a kitchen in a low-temperature area and can be arranged inside a wall body, the explosion-proof valve is a normally open valve, the gas furnace valve is a normally closed valve, and a first outlet and a second outlet of the valve are opened by the gas furnace valve when gas is used. When the exhaust fire-avoiding action is executed, the explosion-proof valve is closed to cut off the external gas from entering the gas pipeline in the kitchen, the first outlet of the gas furnace valve is closed, the third outlet of the gas furnace valve is opened, the residual gas in the pipeline is discharged, and the hidden danger of fire hazard caused by explosion of the gas pipeline due to gas leakage is eliminated.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms fire protection chute, gas stove valve, exhaust fire protection action etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. An intelligent household gas whole-course detection control system is characterized by comprising a host module, a plurality of extension detection modules and a gas control module, wherein the host module is respectively connected with the extension detection modules and the gas control module;
an extension detection module: a gas leakage detection unit;
the gas control module: the gas stove valve, the explosion-proof valve and the fireproof and fire-proof groove unit;
a host module: and sending a detection signal to the extension detection module, receiving and processing data detected by the extension detection module, and controlling the extension detection module and the gas control module to perform an exhaust fire-avoiding action if the detected signal exceeds a threshold value.
2. The system according to claim 1, wherein the fire prevention and prevention groove unit body is H-shaped, the H-shaped body is divided into an upper pipeline groove and a fire prevention groove arranged below the upper pipeline groove, and a cylindrical guide pipe is further arranged in the upper pipeline groove.
3. The system according to claim 2, wherein the gas stove valve is a three-way valve disposed on the gas pipeline between one end of the fire-proof and fire-proof tank and the gas stove, and the explosion-proof valve is a two-way valve disposed on the gas pipeline at the other end of the fire-proof and fire-proof tank.
4. An intelligent household gas whole-course detection control system as claimed in claim 2 or 3, wherein a first outlet of the gas furnace valve is communicated with the gas pipeline, the first outlet faces the gas furnace, a second outlet is communicated with the gas pipeline and faces away from the gas furnace, and a third outlet faces the fire-avoiding groove.
5. The system according to claim 4, wherein the exhaust fire-prevention device is used as a host module to send signals to the gas control module to control the explosion-proof valve to close and control the second outlet and the third outlet of the gas stove valve to open.
6. The intelligent household gas full-range detection control system as claimed in claim 5, wherein the explosion-proof valve is arranged outside a kitchen.
7. The system according to claim 6, wherein the host module further comprises a timing switch module, the timing switch module can set a countdown, a signal is transmitted to the host module after the countdown is completed, and the host module receives the signal to control the explosion-proof valve and/or the gas stove valve to be closed.
8. The system according to claim 7, wherein the H-shaped fireproof and fireproof groove unit comprises two first and second vertical plates parallel to each other and a transverse plate arranged between the first and second vertical plates, the first vertical plate is provided with a plurality of bolt holes, and the bolt holes penetrate through the first vertical plate.
9. The system according to claim 8, wherein a turning plate is arranged on the lower surface of the second vertical plate, the turning plate is hinged to the lower surface of the second vertical plate, an electromagnetic lock is arranged on the turning plate, the electromagnetic lock is electrically connected with the host module, and the end face of the turning plate can be fixed to the first vertical plate through an electronic lock after the turning plate is turned up.
10. The system according to claim 7, wherein the exhaust and fire prevention action further comprises unlocking an electromagnetic lock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110602357.7A CN113421394B (en) | 2021-05-31 | 2021-05-31 | Whole detection control system of domestic gas of intelligence |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110602357.7A CN113421394B (en) | 2021-05-31 | 2021-05-31 | Whole detection control system of domestic gas of intelligence |
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| CN113421394A true CN113421394A (en) | 2021-09-21 |
| CN113421394B CN113421394B (en) | 2022-05-17 |
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| CN202110602357.7A Active CN113421394B (en) | 2021-05-31 | 2021-05-31 | Whole detection control system of domestic gas of intelligence |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2490728A1 (en) * | 1980-09-25 | 1982-03-26 | Snecma | AIR FILM COOLING DEVICE FOR FLAME TUBE OF GAS TURBINE ENGINE |
| JP2006161277A (en) * | 2004-12-02 | 2006-06-22 | Takenaka Komuten Co Ltd | Dry fire-resistant coat unit construction method |
| JP2008241233A (en) * | 2007-02-27 | 2008-10-09 | Yazaki Corp | Alarm device |
| CN101673451A (en) * | 2008-09-10 | 2010-03-17 | 王志刚 | Flammable gas alarm device |
| JP2015025247A (en) * | 2013-07-24 | 2015-02-05 | 菊水化学工業株式会社 | Insulation |
| CN204533705U (en) * | 2015-06-16 | 2015-08-05 | 浙江商业职业技术学院 | A kind of family expenses anti-explosion gas emergency cut-off calutron |
| CN105189636A (en) * | 2013-06-28 | 2015-12-23 | 株式会社吴羽 | Rubber member for drilling tool, drilling tool, and method for recovering oil and gas resources |
| EP3135342A1 (en) * | 2015-08-28 | 2017-03-01 | Stöbich Brandschutz GmbH | Fire or smoke curtain |
| CN208919707U (en) * | 2018-09-21 | 2019-05-31 | 广州发展集团股份有限公司 | Applied to the combustion gas tube seat and its exhaust system in ceiling |
-
2021
- 2021-05-31 CN CN202110602357.7A patent/CN113421394B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2490728A1 (en) * | 1980-09-25 | 1982-03-26 | Snecma | AIR FILM COOLING DEVICE FOR FLAME TUBE OF GAS TURBINE ENGINE |
| JP2006161277A (en) * | 2004-12-02 | 2006-06-22 | Takenaka Komuten Co Ltd | Dry fire-resistant coat unit construction method |
| JP2008241233A (en) * | 2007-02-27 | 2008-10-09 | Yazaki Corp | Alarm device |
| CN101673451A (en) * | 2008-09-10 | 2010-03-17 | 王志刚 | Flammable gas alarm device |
| CN105189636A (en) * | 2013-06-28 | 2015-12-23 | 株式会社吴羽 | Rubber member for drilling tool, drilling tool, and method for recovering oil and gas resources |
| US20160108165A1 (en) * | 2013-06-28 | 2016-04-21 | Kureha Corporation | Rubber member for downhole tools, downhole tool, and method for recovering hydrocarbon resource |
| JP2015025247A (en) * | 2013-07-24 | 2015-02-05 | 菊水化学工業株式会社 | Insulation |
| CN204533705U (en) * | 2015-06-16 | 2015-08-05 | 浙江商业职业技术学院 | A kind of family expenses anti-explosion gas emergency cut-off calutron |
| EP3135342A1 (en) * | 2015-08-28 | 2017-03-01 | Stöbich Brandschutz GmbH | Fire or smoke curtain |
| CN208919707U (en) * | 2018-09-21 | 2019-05-31 | 广州发展集团股份有限公司 | Applied to the combustion gas tube seat and its exhaust system in ceiling |
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| CN113421394B (en) | 2022-05-17 |
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