CN114046448A - Gas pipeline gas supply system - Google Patents
Gas pipeline gas supply system Download PDFInfo
- Publication number
- CN114046448A CN114046448A CN202111228087.4A CN202111228087A CN114046448A CN 114046448 A CN114046448 A CN 114046448A CN 202111228087 A CN202111228087 A CN 202111228087A CN 114046448 A CN114046448 A CN 114046448A
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- China
- Prior art keywords
- air supply
- gas supply
- gas
- channel
- air
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
Abstract
The invention provides a gas pipeline gas supply system, comprising: the two ends of the main gas supply channel are respectively connected with a first gas supply module and a second gas supply module; one end of the gas supply branch channel is communicated with the gas supply main channel, and the other end of the gas supply branch channel is connected with the melting furnace; a first conduction control piece is arranged between the communication part between the air supply branch channel and the air supply main channel and the first air supply module and between the communication part and the second air supply module respectively; the second conduction control piece is used for controlling the connection and disconnection of the air supply of the first air supply module to the air supply main channel; the third conduction control piece is used for controlling the second air supply module to supply air to the air supply main channel to be connected or disconnected; and the fourth conduction control pieces are respectively arranged on the gas supply branch channels and are used for controlling the on-off of the gas supply branch channels to the melting furnace. The system has the advantages that double air sources are introduced, the cut-off valves are respectively arranged on the air inlet, the air supply main channel and the air supply branch channel, the system can be overhauled in a segmented mode, and the system can be comprehensively overhauled without stopping all melting furnaces.
Description
Technical Field
The invention relates to the technical field of pipeline gas supply, in particular to a gas pipeline gas supply system.
Background
The gas pipeline gas supply system is widely applied to the glass industrial production industry, the glass industrial production is not stoppable, namely, a melting furnace needs to work uninterruptedly, and when a plurality of melting furnaces are put into production simultaneously and have a fault problem, the problem of maintenance is extremely troublesome.
Present gas pipeline gas supply system can only overhaul the gas supply branch pipe of the melting furnace of blowing out, and all the other smelting furnaces need continue to produce, consequently can't overhaul trunk line and air inlet, and gas pipeline system uses single air supply mostly for only can go on overhauing when all melting furnaces are blowing out comprehensively.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a gas pipeline gas supply system, which comprises:
the air supply main channel is connected with a first air supply module and a second air supply module at two ends respectively;
one end of the gas supply branch channel is communicated with the gas supply main channel, and the other end of the gas supply branch channel is correspondingly connected with a melting furnace;
a first conduction control part is respectively arranged between a communication part formed between the air supply branch channel and the air supply main channel and the first air supply module and between the communication part and the second air supply module;
the second conduction control piece is arranged at one end, facing the first air supply module, of the air supply main channel and used for controlling the connection and disconnection of the air supply of the first air supply module to the air supply main channel;
the third conduction control piece is arranged at one end, facing the second air supply module, of the air supply main channel and used for controlling the second air supply module to supply air to the air supply main channel to be switched on and off;
and the fourth conduction control pieces are respectively arranged on the gas supply branch channels and are used for controlling the on-off of the gas supply branch channels to the melting furnace.
Preferably, the first air supply module provides a first air source and delivers the first air source to one end of the air supply main channel.
Preferably, the second air supply module provides a second air source and conveys the second air source to the other end of the air supply main channel.
Preferably, the second and third conduction control members are check valves.
Preferably, the gas supply branch channel is a single branch pipeline or a double branch pipeline.
Preferably, the double branch pipe comprises:
one end of the first gas supply branch pipe is connected with the gas supply main channel, and the other end of the first gas supply branch pipe is connected with the melting furnace;
one end of the second gas supply branch pipe is connected with the gas supply main channel, and the other end of the second gas supply branch pipe is connected with the other end of the first gas supply branch pipe;
the first gas supply branch pipe and the second gas supply branch pipe are used for conveying the first gas source or the second gas source to the melting furnace.
Preferably, the air supply main channel and the first air supply branch pipe and the second air supply branch pipe form a communication part respectively, and at least two first conduction control parts are arranged between the communication parts.
Preferably, the first gas supply bronchus and the second gas supply bronchus are respectively provided with at least two fourth conduction control pieces.
Preferably, the air supply branch channel and the air supply main channel are formed by a three-way valve at the communication position for controlling the on-off of the air supply main channel by the first air supply module or the second air supply module.
Preferably, the first and fourth conduction control members are shut-off valves.
The technical scheme has the following advantages or beneficial effects: the system introduces double air sources, and the air inlet, the air supply main channel and the air supply branch channel are respectively provided with a cut-off valve, so that the system can be controlled in a segmented mode to overhaul, and the melting furnace can be comprehensively overhauled without stopping working.
Drawings
FIG. 1 is a schematic diagram of the system in accordance with the preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of a system employing a dual branch pipe configuration in accordance with a preferred embodiment of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present invention is not limited to the embodiment, and other embodiments may be included in the scope of the present invention as long as the gist of the present invention is satisfied.
In accordance with the above-mentioned problems occurring in the prior art, there is provided, in a preferred embodiment of the present invention, a gas pipeline maintenance system, as shown in fig. 1, including:
the device comprises a main air supply channel 1, wherein two ends of the main air supply channel 1 are respectively connected with a first air supply module 2 and a second air supply module 3;
one end of the gas supply branch channel 4 is communicated with the gas supply main channel 1, and the other end of the gas supply branch channel 4 is correspondingly connected with a melting furnace 5;
a first conduction control part 6 is respectively arranged between a communication part formed between the air supply branch channel 4 and the air supply main channel 1 and the first air supply module and between the communication part and the second air supply module 3;
the second conduction control piece 7 is arranged at one end, facing the first air supply module 2, of the air supply main channel 1 and is used for controlling the connection and disconnection of the air supply of the first air supply module 2 to the air supply main channel 1;
the third conduction control piece 8 is arranged at one end, facing the second air supply module 3, of the air supply main channel 1 and is used for controlling the second air supply module 3 to supply air to the air supply main channel 1 to be switched on and off;
and at least one fourth conduction control part 9 which is respectively arranged on each gas supply branch channel 4 and is used for controlling the on-off of the gas supply branch channels 4 to the melting furnace 5.
In the preferred embodiment of the present invention, the first air supply module 2 provides a first air source and delivers the first air source to one end of the main air supply channel 1.
In the preferred embodiment of the present invention, the second air supply module 3 provides a second air source and delivers the second air source to the other end of the main air supply channel 1.
Specifically, in the present embodiment, considering that the production process of the glass industry is continuous production, i.e. requiring continuous supply of gas for 24 hours a day in one kiln period, the design campaign of each melting furnace 5 is typically 8-10 years, and when there are a plurality of melting furnaces 5 in one glass industry park, they will not be shut down at the same time, even if one melting furnace 5 is shut down, the gas supply branch passage 4 corresponding to the melting furnace 5 can be shut down for maintenance, the gas supply main passage 1 and its upstream gas source pipeline are not capable of being shut down, unless all melting furnaces 5 are shut down, the gas supply main passage 1 never has the opportunity of shutting down for maintenance, which is not reliable or feasible in reality, so that when the glass enterprises use gas fuel as the only fuel, they must have two relatively independent gas sources, and when the only gas source is used, if the gas source supply device fails, each melting furnace is rendered inoperable, and therefore, a first gas supply module 2 is provided to provide a first gas source and a second gas supply module 3 is provided to provide a second gas source in the system.
Preferably, considering that each pipe section of each air supply branch channel 4 and the air supply main channel 1 needs to be overhauled, a first conduction control part 6 is arranged on the air supply main channel 1, when the pipe section above the communication part of the air supply branch channel 4 and the air supply main channel 1 needs to be overhauled, the first conduction control part 6 above is only needed to be closed, meanwhile, the melting furnace 5 is supplied with air by a second air source, a fourth conduction control part 9 is arranged on the air supply branch channel 4, and when the overhaul is needed, the fourth conduction control part 9 on the corresponding air supply branch channel 4 is only needed to be closed.
Preferably, the first gas source includes, but is not limited to, natural gas, coal gas, etc., the second gas source may be pipeline gas, liquefied natural gas, liquefied petroleum premixed gas, etc., of other delivery stations, the second gas source has the same characteristics or interchangeability with the fuel gas of the first gas source, the first gas source and the second gas source are different as far as possible, and when the gas sources of the same type or the same source are used, if a gas supply problem occurs, the whole system cannot work normally.
In the preferred embodiment of the present invention, the second and third conduction control members 7 and 8 are check valves.
Specifically, in this embodiment, a check valve is set to prevent the first air source and the second air source from communicating with each other.
In the preferred embodiment of the present invention, the gas supply branch passage 4 is a single branch pipe or a double branch pipe.
In a preferred embodiment of the present invention, as shown in fig. 2, the double branch pipe includes:
a first gas supply branch pipe 41, wherein one end of the first gas supply branch pipe 41 is connected with the gas supply main channel 1, and the other end of the first gas supply branch pipe 42 is connected with the melting furnace 5;
a second gas supply branch pipe 42, one end of the second gas supply branch pipe 42 is connected with the gas supply main channel 1, and the other end of the second gas supply branch pipe 42 is connected with the other end of the first gas supply branch pipe 41;
the first and second gas supply branch pipes 41 and 42 are used for supplying the first gas source or the second gas source to the melting furnace 5.
Specifically, in this embodiment, three air supply situations may occur simultaneously in the double branch pipes at different positions, which are respectively:
in the first case: the first supply bronchus 41 and the second supply bronchus 42 simultaneously supply the first gas source;
in the second case: the first and second gas supply bronchi 41 and 42 simultaneously deliver the second gas source;
in the third case: first supply bronchus 41 delivers a first source of gas and second supply bronchus 42 delivers a second source of gas.
In the preferred embodiment of the present invention, a connection is formed between the main air supply channel 1 and the first and second branch air supply pipes 41 and 42, and at least two first conduction control members 6 are disposed between the two connections.
Specifically, in this embodiment, two first conduction control members 6 are disposed between two communicating portions, when the first gas supply branch pipe 41 needs to be overhauled, only the first conduction control member 6 above the communicating portion between the first gas supply branch pipe 41 and the gas supply main channel 1 needs to be closed, and when the first conduction control member 6 below the communicating portion between the first gas supply branch pipe 41 and the gas supply main channel 1 needs to be overhauled, only the first conduction control member 6 above the communicating portion between the second gas supply branch pipe 42 and the gas supply main channel 1 needs to be closed.
In the preferred embodiment of the present invention, at least two fourth conduction control members 9 are respectively disposed on the first and second gas supply branch pipes 41 and 42.
Specifically, in this embodiment, two fourth conduction control members 9 are respectively disposed on the first gas supply branch pipe 41 and the second gas supply branch pipe 42, and when the fourth conduction control member 9 on the first gas supply branch pipe 41 near the gas supply main channel 1 needs to be repaired, the fourth conduction control member 9 on the first gas supply branch pipe 41 near the melting furnace 5 only needs to be closed.
In a preferred embodiment of the present invention, a three-way valve is disposed at the communication position formed between the branch air supply channel 4 and the main air supply channel 1, and is used for controlling the on/off of the air supply from the first air supply module 2 or the second air supply module 3 to the main air supply channel 1.
Specifically, in this embodiment, the three-way valve is disposed on the main channel between the two check valves, several three-way valves are disposed in several branch gas supply channels 4, and when the branch gas supply channels 4 are double branch pipes, two three-way valves are required for each branch gas supply channel 4, and the branch gas supply channels 4 are respectively connected from the corresponding three-way valves.
Preferably, considering that the three-way valves are divided into an L-shaped three-way valve and a T-shaped three-way valve, wherein the L-shaped three-way valve cannot be conducted simultaneously in three directions, the T-shaped three-way valve is used in the present system to achieve simultaneous conduction in three directions of the main gas supply channel 1 and the branch gas supply channel 4.
In the preferred embodiment of the present invention, the first and fourth conduction control members 6 and 9 are shut-off valves.
Specifically, in this embodiment, three shut-off valves are disposed at each three-way valve, and the three shut-off valves are respectively disposed on the pipelines corresponding to the three-way valve connectors, and the shut-off valves are not limited to the type of the valves, and valves that can prevent media in the pipelines from flowing, such as ball valves, gate valves, and butterfly valves, may be used.
Preferably, if there is no three-way valve between two shut-off valves on the main gas supply channel 1, the shut-off valves may be directly connected with the shut-off valves, and there is no limitation that the valves must be connected with each other by a pipeline.
Specifically, in this embodiment, since there may be a case where the three-way valve is replaced with a three-way pipe for use in the system, different maintenance methods need to be adopted for the case where the three-way valve is used and the case where the three-way pipe is used in actual maintenance, including:
the three-way valve overhauling method comprises the following steps: when the three-way valve needs to be overhauled, the three-way valve can be overhauled by closing the first cut-off valve on the pipeline corresponding to the three-way valve;
the three-way pipe fitting overhauling method comprises the following steps: when the three-way pipe is used for communicating the main air supply channel 1 and the branch air supply channel 4, the pipelines corresponding to the three-way pipe connectors in three directions are required to be respectively provided with a cutting valve, so that when the three-way pipe is required to be overhauled, only the first cutting valve on the pipeline corresponding to the three-way pipe connector in three directions is required to be closed and the three-way pipe connector is required to be overhauled;
when the first cut-off valve on the pipeline that three direction interfaces of tee bend pipe fitting correspond overhauls, only need close the second cut-off valve on the pipeline that three direction interfaces of tee bend pipe fitting correspond and overhaul respectively first cut-off valve can.
Specifically, in this embodiment, the method for repairing the gas supply branch passage 4 using a single branch pipe includes:
the first maintenance method comprises the following steps: when the first air supply module 2 and the second conduction control piece 7 need to be overhauled, closing the first air supply module 2 and a first cut-off valve close to the first air supply module 2 and opening the second air supply module 3 for supplying air, and then immediately overhauling the first air supply module 2 and the second conduction control piece 7, similarly, when the second air supply module 3 and the third conduction control piece 8 need to be overhauled, closing the second air supply module 3 and a first cut-off valve close to the second air supply module 3 and opening the first air supply module 2 for supplying air, and then immediately overhauling the second air supply module 3 and the third conduction control piece 8;
the second maintenance method comprises the following steps: when a first air supply branch channel 4 close to a first air supply module 2 needs to be overhauled, closing first cut-off valves above and below the communication position of the air supply branch channel 4 and an air supply main channel 1, opening a second air supply module 3 for air supply, immediately overhauling the air supply branch channel 4 and the cut-off valves on the air supply branch channel 4, when the first air supply branch channel 4 close to the second air supply module 3 needs to be overhauled, closing the first cut-off valves above and below the communication position of the air supply branch channel 4 and the air supply main channel 1, opening the first air supply module 2 for air supply, and immediately overhauling the air supply branch channel 4 and the cut-off valves on the air supply branch channel 4;
the third maintenance method comprises the following steps: when the gas supply branch channel 4 at the middle position needs to be overhauled, the second gas supply module 2 and the third gas supply module 3 are simultaneously opened, the second stop valves above and below the communication position of the gas supply branch channel 4 to be overhauled and the gas supply main channel 1 are closed, and then the gas supply branch channel 4 and the first stop valves above and below the communication position of the gas supply branch channel 4 and the gas supply main channel 1 are overhauled.
Specifically, in this embodiment, the method for repairing the air supply branch passage 4 using the double branch pipe includes:
a first maintenance method, when needing to maintain a first gas supply branch pipe 41 close to a first gas supply module 2, closing a second conduction control member 7, a first cut-off valve above the connection part of the second gas supply branch pipe 42 and a gas supply main channel 1 and a first cut-off valve on the first gas supply branch pipe 41 close to a melting furnace 5, supplying gas to the melting furnace 5 by the second gas supply branch pipe 42, then maintaining the first gas supply branch pipe 41 and the cut-off valve on the first gas supply branch pipe 41 close to the gas supply main channel 1, when needing to maintain the second gas supply branch pipe 42 close to the first gas supply module 2, closing the first cut-off valve below the connection part of the first gas supply branch pipe 41 and the gas supply main channel 1 and the first cut-off valve on the second gas supply branch pipe 42 close to the melting furnace 5, supplying gas to the melting furnace 5 by the first gas supply branch pipe 41, then, the second gas supply branch pipe 42 and a cut-off valve on the second gas supply branch pipe 42 close to the gas supply main channel 1 are overhauled;
in the second maintenance method, when the first gas supply bronchus 41 and the second gas supply bronchus 42 at the middle position need to be maintained, the second cut-off valve above the communication position of the first gas supply bronchus 41 and the gas supply main channel 1 and the second cut-off valve below the communication position of the second gas supply bronchus 42 and the gas supply main channel 1 are closed, and then the first gas supply bronchus 41 and the second gas supply bronchus 42 are maintained respectively according to the first maintenance method, and it is noted that the second conduction control element 7 or the third conduction control element 8 does not need to be closed according to the first maintenance method.
Specifically, in this embodiment, the principle that the main gas supply channel 1 can be overhauled in sections is as follows: when a certain melting furnace 5 is shut down, the corresponding gas supply branch channel 4 can be closed, the segmented cut-off valve on the gas supply main channel 1 is closed at the same time, a part of main channel associated with the gas supply branch channel 4 is isolated for gas shutdown maintenance, at the moment, the gas supply branch channels 4 on the upper and lower streams of the isolation part can be supplied with gas respectively by two gas sources, when another melting furnace 5 is shut down, the pipe section and the cut-off valve associated with another melting furnace 5 can be maintained, and according to the shutdown maintenance period of each melting furnace 5, each pipe section and the cut-off valve on the gas supply main channel 1 have the opportunity of periodic batch maintenance.
In particular, in this embodiment, because the pipelines, valves, etc. involved in the system are static facilities and have low operating frequency, and the probability of sudden failure is low, it is reasonable to use a glass kiln period as the maintenance period for each branch gas supply channel 4 and its related main pipe segment, if the pipelines are laid in a highly corrosive environment, or the glass enterprises have higher requirements for the reliability of the gas pipeline system, a double-branch gas supply mode can be adopted, so that most of the main gas supply channels 1, the branch gas supply channels 4, the cut-off valves, etc. can be maintained at any time, and only the cut-off valves and the branch gas supply channels 4 at individual positions need to be stopped for maintenance.
Wherein, the maintenance principle of two branch pipelines is: each melting furnace 5 is provided with two gas supply branch pipes, one for one and one for standby, which are respectively connected with the gas supply main channel 1 and converged at a gas supply interface, one end of each gas supply branch pipe close to the melting furnace 5 at the upper and lower reaches of the convergence point is respectively provided with a cut-off valve, and except that the two cut-off valves and the lower reaches of the two cut-off valves can only be shut down for maintenance, the gas supply main channel 1, the gas supply branch channel 4 and each cut-off valve and part attached to the gas supply branch channel can be switched to a standby state at any time for maintenance.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A gas pipeline gas supply system, comprising:
the air supply main channel is connected with a first air supply module and a second air supply module at two ends respectively;
one end of the gas supply branch channel is communicated with the gas supply main channel, and the other end of the gas supply branch channel is correspondingly connected with a melting furnace;
a first conduction control part is respectively arranged between a communication part formed between the air supply branch channel and the air supply main channel and the first air supply module and between the communication part and the second air supply module;
the second conduction control piece is arranged at one end, facing the first air supply module, of the air supply main channel and used for controlling the connection and disconnection of the air supply of the first air supply module to the air supply main channel;
the third conduction control piece is arranged at one end, facing the second air supply module, of the air supply main channel and used for controlling the second air supply module to supply air to the air supply main channel to be switched on and off;
and the fourth conduction control pieces are respectively arranged on the gas supply branch channels and are used for controlling the on-off of the gas supply branch channels to the melting furnace.
2. The gas pipeline air supply system of claim 1 wherein said first air supply module provides a first air supply and delivers said first air supply to one end of said air supply main channel.
3. The gas pipeline air supply system according to claim 2, wherein the second air supply module provides a second air supply and delivers the second air supply to the other end of the main air supply channel.
4. The gas pipeline air supply system of claim 1, wherein the second and third conduction controls are one-way valves.
5. The gas pipeline gas supply system of claim 1, wherein the gas supply branch channel is a single branch channel or a double branch channel.
6. The gas pipeline air supply system of claim 5, wherein the double branch pipeline comprises:
one end of the first gas supply branch pipe is connected with the gas supply main channel, and the other end of the first gas supply branch pipe is connected with the melting furnace;
one end of the second gas supply branch pipe is connected with the gas supply main channel, and the other end of the second gas supply branch pipe is connected with the other end of the first gas supply branch pipe;
the first gas supply branch pipe and the second gas supply branch pipe are used for conveying the first gas source or the second gas source to the melting furnace.
7. The gas pipeline gas supply system according to claim 6, wherein a communication point is formed between the main gas supply channel and each of the first and second gas supply branch pipes, and at least two first conduction control members are disposed between the two communication points.
8. The gas pipeline gas supply system according to claim 6, wherein at least two of said fourth conduction control members are provided on said first gas supply branch pipe and said second gas supply branch pipe, respectively.
9. The gas pipeline gas supply system according to claim 1, wherein a three-way valve is provided at the communication between the gas supply branch channel and the gas supply main channel, and is used for controlling the on-off of the gas supply from the first gas supply module or the second gas supply module to the gas supply main channel.
10. The gas pipeline air supply system of claim 1, wherein the first and fourth conduction controls are shutoff valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111228087.4A CN114046448A (en) | 2021-10-21 | 2021-10-21 | Gas pipeline gas supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111228087.4A CN114046448A (en) | 2021-10-21 | 2021-10-21 | Gas pipeline gas supply system |
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| CN114046448A true CN114046448A (en) | 2022-02-15 |
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| CN202111228087.4A Pending CN114046448A (en) | 2021-10-21 | 2021-10-21 | Gas pipeline gas supply system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201439864U (en) * | 2009-06-16 | 2010-04-21 | 武汉钢铁(集团)公司 | Double source air supply system |
| CN202430106U (en) * | 2011-12-29 | 2012-09-12 | 陕西彩虹电子玻璃有限公司 | Natural gas supply guaranteeing system of glass tank furnace |
| WO2013046660A1 (en) * | 2011-09-30 | 2013-04-04 | 株式会社フジキン | Gas supply device |
| CN108533964A (en) * | 2018-05-25 | 2018-09-14 | 钦州学院 | A kind of more gas source feed systems and its air supply method |
| KR20200030942A (en) * | 2018-09-13 | 2020-03-23 | 주식회사 포스코 | Sealing gas supply system for pump shaft |
| CN213930428U (en) * | 2020-10-22 | 2021-08-10 | 长兴合成树脂(常熟)有限公司 | Safety instrument system with multiple gas sources |
-
2021
- 2021-10-21 CN CN202111228087.4A patent/CN114046448A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201439864U (en) * | 2009-06-16 | 2010-04-21 | 武汉钢铁(集团)公司 | Double source air supply system |
| WO2013046660A1 (en) * | 2011-09-30 | 2013-04-04 | 株式会社フジキン | Gas supply device |
| CN202430106U (en) * | 2011-12-29 | 2012-09-12 | 陕西彩虹电子玻璃有限公司 | Natural gas supply guaranteeing system of glass tank furnace |
| CN108533964A (en) * | 2018-05-25 | 2018-09-14 | 钦州学院 | A kind of more gas source feed systems and its air supply method |
| KR20200030942A (en) * | 2018-09-13 | 2020-03-23 | 주식회사 포스코 | Sealing gas supply system for pump shaft |
| CN213930428U (en) * | 2020-10-22 | 2021-08-10 | 长兴合成树脂(常熟)有限公司 | Safety instrument system with multiple gas sources |
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