CN115451335A - Carrier gas undisturbed switching device - Google Patents
Carrier gas undisturbed switching device Download PDFInfo
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- CN115451335A CN115451335A CN202211262773.8A CN202211262773A CN115451335A CN 115451335 A CN115451335 A CN 115451335A CN 202211262773 A CN202211262773 A CN 202211262773A CN 115451335 A CN115451335 A CN 115451335A
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- Prior art keywords
- pressure
- inlet channel
- air
- air inlet
- cavity
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- 239000012159 carrier gas Substances 0.000 title claims abstract description 16
- 239000007789 gas Substances 0.000 claims abstract description 70
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 34
- 239000010959 steel Substances 0.000 claims description 34
- 230000009467 reduction Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
- F17C7/02—Discharging liquefied gases
- F17C7/04—Discharging liquefied gases with change of state, e.g. vaporisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0107—Single phase
- F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/04—Methods for emptying or filling
- F17C2227/046—Methods for emptying or filling by even emptying or filling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The application relates to the field of gas supply equipment, in particular to a carrier gas undisturbed switching device. A carrier gas undisturbed switching device comprises a first air inlet channel, a second air inlet channel, an air outlet channel and a switching mechanism, wherein a first pressure reducing valve is installed on the first air inlet channel, a second pressure reducing valve is installed on the second air inlet channel, and a fixed value pressure reducing valve is installed on the air outlet channel; the switching mechanism comprises a movable cavity, the air outlet channel is connected with the side surface of the movable cavity, a movable part moving along the movable cavity is arranged in the movable cavity, the movable cavity is divided into a first cavity and a second cavity by the movable part, the first cavity is communicated with the first air inlet channel, and the second cavity is communicated with the second air inlet channel; when the air pressure in the first chamber is greater than the air pressure in the second chamber, the air outlet channel is only communicated with the first chamber; when the air pressure in the second chamber is greater than the air pressure in the first chamber, the air outlet channel is only communicated with the second chamber. This scheme can all maintain gaseous stable continuous output at whole in-process.
Description
Technical Field
The application relates to the field of gas supply equipment, in particular to a carrier gas undisturbed switching device.
Background
Currently, in an air supply system, due to the need of maintaining continuous and stable operation of the air supply system, a standby air source is usually required to be arranged to meet the requirement of continuous air supply. When the liquefied gas in one steel cylinder is used up, the used steel cylinder needs to be detached and then replaced with a new steel cylinder.
However, this method has the following problems: the gas can not be stably supplied to the outside continuously in the process of replacing a new steel cylinder.
Disclosure of Invention
In order to realize continuous and stable gas supply of a gas supply system, the application provides a carrier gas undisturbed switching device.
The carrier gas undisturbed switching device provided by the application adopts the following technical scheme:
a carrier gas undisturbed switching device comprises a first air inlet channel, a second air inlet channel, an air outlet channel and a switching mechanism, wherein a first pressure reducing valve is installed on the first air inlet channel, a second pressure reducing valve is installed on the second air inlet channel, and a fixed value pressure reducing valve is installed on the air outlet channel; the switching mechanism comprises a movable cavity, an air outlet channel is connected with the side surface of the movable cavity, a movable part moving along the movable cavity is arranged in the movable cavity, the movable cavity is divided into a first cavity and a second cavity by the movable part, the first cavity is communicated with a first air inlet channel, and the second cavity is communicated with a second air inlet channel; when the air pressure in the first chamber is greater than the air pressure in the second chamber, the air outlet channel is only communicated with the first chamber; when the air pressure in the second chamber is greater than the air pressure in the first chamber, the air outlet channel is only communicated with the second chamber.
By adopting the technical scheme, the first air inlet channel and the second air inlet channel are connected with the air storage steel cylinder, and air is supplied from one side with large air pressure in the air inlet channel input switching mechanism. When the liquefied gas in the gas storage steel cylinder at the side is used up, the gas pressure output outwards by the gas storage steel cylinder is sharply reduced, the gas storage steel cylinder at the other side starts to supply gas, and the used gas storage steel cylinder can be replaced at the moment. Because the whole switching process does not need manual intervention operation, the position change of the movable block is instantly completed due to the pressure difference change at the two sides of the movable block when the air pressure changes, and the seamless switching is realized. And because the fixed value pressure reducing valve is arranged on the air outlet channel, the pressure of the gas output after passing through the fixed value pressure reducing valve is kept unchanged no matter the gas is conveyed by the first air inlet channel or the second air inlet channel. Therefore, the stable and continuous output of the gas can be maintained in the whole process.
Preferably, the pressure reduction amplitude of the first pressure reduction valve is smaller than the pressure reduction amplitude of the second pressure reduction valve.
Through adopting above-mentioned technical scheme, the decompression range that sets up first relief pressure valve is less than the decompression range of second relief pressure valve for when using the same standard gas storage steel bottle, connect the gas storage steel bottle of first inlet channel and outwards supply gas earlier, only after the liquefied gas in this gas storage steel bottle finishes using, connect the gas storage steel bottle of second inlet channel and just can outwards supply gas.
Preferably, the first chamber and the second chamber are internally provided with a limiting structure which prevents the volume of the first chamber and the volume of the second chamber from being reduced to zero.
Through adopting above-mentioned technical scheme, set up limit structure and make the volume of first cavity and second cavity can not reduce to zero. The situation that after the volume of the cavity disappears, the pressure applying area of the movable block by the air inlet pipeline is reduced, so that the movable block cannot be switched in time after the liquefied gas in one gas storage steel cylinder is used up is avoided.
Preferably, one side of the first air inlet channel, which is located at the position where the first pressure reducing valve faces the position where the first air inlet channel is connected with the first pressure transmitter, and one side of the second air inlet channel, which is located at the position where the second pressure reducing valve faces the position where the second air inlet channel is connected with the second pressure transmitter.
Through adopting above-mentioned technical scheme, set up first pressure transmitter and second pressure transmitter and detect the atmospheric pressure of gas storage steel bottle, when the liquefied gas in the gas storage steel bottle used and finishes, the atmospheric pressure that detects reduces, can remind operating personnel to change the gas storage steel bottle through the mode that external alarm was reported to the police this moment.
Preferably, one side of the first air inlet channel, which is located at the first pressure reducing valve and faces the switching mechanism, is connected with a first pressure gauge, and one side of the second air inlet channel, which is located at the second pressure reducing valve and faces the switching mechanism, is connected with a second pressure gauge.
Through adopting above-mentioned technical scheme, set up first manometer and second manometer and monitor whether the gas pressure who exports after first relief pressure valve and second relief pressure valve reaches the requirement
Preferably, a third pressure gauge is connected to one side, facing the air outlet external interface, of the air outlet channel, of the constant value pressure reducing valve.
Through adopting above-mentioned technical scheme, come the monitoring through the third manometer whether the gas pressure of output reaches the requirement after the definite value relief pressure valve.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the whole process of switching the gas storage steel cylinder does not need manual intervention operation, and when the air pressure changes, the position change of the movable block is instantly completed due to the pressure difference change at the two sides of the movable block, so that seamless switching is realized. And because the fixed value pressure reducing valve is arranged on the air outlet channel, the pressure of the gas output after passing through the fixed value pressure reducing valve is kept unchanged no matter the gas is conveyed by the first air inlet channel or the second air inlet channel. Therefore, the stable and continuous output of the gas can be maintained in the whole process.
Drawings
FIG. 1 is a schematic structural view of an embodiment;
FIG. 2 is a schematic view of the structure of the movable part in the embodiment.
Description of the reference numerals: 1. a first air intake passage; 2. a second intake passage; 3. an air outlet channel; 4. a switching mechanism; 5. a first pressure reducing valve; 6. a second pressure reducing valve; 7. a constant value pressure reducing valve; 8. a gas storage steel cylinder; 9. a movable chamber; 10. a movable member; 11. a first chamber; 12. a second chamber; 13. a first pressure transmitter; 14. a first pressure gauge; 15. a second pressure transmitter; 16. a second pressure gauge; 17. and a third pressure gauge.
Detailed Description
The present application is described in further detail below with reference to figures 1 and 2.
The embodiment of the application discloses a carrier gas undisturbed switching device.
As shown in fig. 1, the carrier gas undisturbed switching device includes a first inlet channel 1, a second inlet channel 2, an outlet channel 3, and a switching mechanism 4. A first pressure reducing valve 5 is installed on the first air inlet channel 1, a second pressure reducing valve 6 is installed on the second air inlet channel 2, and a fixed value pressure reducing valve 7 is installed on the air outlet channel 3. One end of the first air inlet channel 1, which is far away from the first pressure reducing valve 5, and one end of the second air inlet channel 2, which is far away from the second pressure reducing valve 6, are both connected with the gas storage steel cylinder 8, and the pressure of the gas in the gas storage steel cylinder 8 after passing through the first pressure reducing valve 5 is greater than the pressure of the gas in the gas storage steel cylinder 8 after passing through the second pressure reducing valve 6. The first reducing valve 5 and the second reducing valve 6 can be selected from a constant value reducing valve 7, a constant differential reducing valve, a constant ratio reducing valve and the like, and the pressure reducing amplitude of the second reducing valve 6 is only required to be maintained to be larger than the pressure reducing amplitude of the first reducing valve 5.
As shown in fig. 1 and 2, a movable chamber 9 is arranged in the switching mechanism 4, the air outlet channel 3 is connected with a side surface of the movable chamber 9, a movable member 10 moving along the movable chamber 9 is arranged in the movable chamber 9, the movable chamber 9 is divided into a first chamber 11 and a second chamber 12 by the movable member 10, the first chamber 11 is communicated with the first air inlet channel 1, and the second chamber 12 is communicated with the second air inlet channel 2. When the air pressure in the first chamber 11 is greater than the air pressure in the second chamber 12, the movable element 10 moves towards the connection position of the second air inlet channel 2 under the action of the pressure difference, and the air outlet channel 3 is only communicated with the first chamber 11. When the air pressure in the second chamber 12 is greater than the air pressure in the first chamber 11, the movable element 10 moves toward the connection position of the first air inlet passage 1 under the action of the pressure difference, and at this time, the air inlet passage is only connected with the second chamber 12. The volume of the first chamber 11 and the second chamber 12 may not be reduced to zero by providing a limit structure in the first chamber 11 and the second chamber 12.
As shown in fig. 1, a first pressure transmitter 13 is connected to a side of the first air inlet channel 1, which is located at a position where the first pressure reducing valve 5 faces the position where the first air inlet channel is connected to the air storage cylinder 8, and a first pressure gauge 14 is connected to a side of the first air inlet channel 1, which is located at a position where the first pressure reducing valve 5 faces the switching mechanism 4. A second pressure transmitter 15 is connected to one side of the second air inlet channel 2, which is located at a position where the second pressure reducing valve 6 faces the air storage steel cylinder 8, and a second pressure gauge 16 is connected to one side of the second air inlet channel 2, which is located at a position where the second pressure reducing valve 6 faces the switching mechanism 4. And a third pressure gauge 17 is connected to one side of the air outlet channel 3, which is positioned on the constant value pressure reducing valve 7 and faces the air outlet external interface. And monitoring whether the pressure of the gas output by the first pressure reducing valve 5, the second pressure reducing valve 6 and the constant value pressure reducing valve 7 meets the requirement or not by a first pressure gauge 14, a second pressure gauge 16 and a third pressure gauge 17. Whether the gas in the gas storage steel cylinder 8 is conveyed or not is monitored through the first pressure transmitter 13 and the second pressure transmitter 15, and the gas storage steel cylinder 8 can be replaced by a worker in a mode of externally connecting an alarm when the gas conveying in the gas storage steel cylinder 8 is finished.
The specific using process is as follows:
after the first air inlet channel 1 and the second air inlet channel 2 are connected with the air storage steel cylinder 8, because the air pressure of the air input into the switching mechanism 4 by the first air inlet channel 1 is greater than the air pressure of the air input into the switching mechanism 4 by the second air inlet channel 2, the air outlet channel 3 is communicated with the first cavity 11, and the air storage steel cylinder 8 connected with the first air inlet channel 1 supplies air at the moment. When the liquefied gas in the gas storage steel cylinder 8 connected with the first gas inlet channel 1 is used up, the gas pressure output from the gas storage steel cylinder 8 is sharply reduced, the gas pressure input into the switching mechanism 4 from the second gas inlet channel 2 is greater than the gas pressure input into the switching mechanism 4 from the first gas inlet channel 1, the gas outlet channel 3 is communicated with the second chamber 12, the gas storage steel cylinder 8 connected with the second gas inlet channel 2 supplies gas at the moment, and the first chamber 11 is not connected with the gas outlet channel 3 any more. The gas storage steel cylinder 8 connected with the first gas inlet channel 1 can be replaced at this time, and gas can be supplied through the gas storage steel cylinder 8 connected with the first gas inlet channel 1 again after the replacement is completed. Because the whole switching process does not need manual intervention operation, the position change of the movable block is instantly completed due to the pressure difference change of the two sides of the movable block when the air pressure changes, and the seamless switching is realized. And because the fixed value pressure reducing valve 7 is arranged on the air outlet channel 3, the pressure of the gas output after passing through the fixed value pressure reducing valve 7 is kept unchanged no matter the gas is conveyed by the first air inlet channel 1 or the second air inlet channel 2. Therefore, the stable and continuous output of the gas can be maintained in the whole process.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (6)
1. A carrier gas undisturbed switching device is characterized in that: the air inlet valve comprises a first air inlet channel (1), a second air inlet channel (2), an air outlet channel (3) and a switching mechanism (4), wherein a first pressure reducing valve (5) is installed on the first air inlet channel (1), a second pressure reducing valve (6) is installed on the second air inlet channel (2), and a constant pressure reducing valve (7) is installed on the air outlet channel (3); the switching mechanism (4) comprises a movable cavity (9), the air outlet channel (3) is connected with the side face of the movable cavity (9), a movable part (10) moving along the movable cavity (9) is arranged in the movable cavity (9), the movable cavity (9) is divided into a first cavity (11) and a second cavity (12) by the movable part (10), the first cavity (11) is communicated with the first air inlet channel (1), and the second cavity (12) is communicated with the second air inlet channel (2); when the air pressure in the first chamber (11) is greater than the air pressure in the second chamber (12), the air outlet channel (3) is only communicated with the first chamber (11); when the air pressure in the second chamber (12) is greater than the air pressure in the first chamber (11), the air outlet channel (3) is only communicated with the second chamber (12).
2. The carrier gas undisturbed switching apparatus as claimed in claim 1 wherein: the pressure reduction amplitude of the first pressure reduction valve (5) is smaller than that of the second pressure reduction valve (6).
3. The carrier gas undisturbed switching apparatus as claimed in claim 1 wherein: and limiting structures which enable the volumes of the first cavity (11) and the second cavity (12) not to be reduced to zero are arranged in the first cavity (11) and the second cavity (12).
4. The carrier gas undisturbed switching apparatus as claimed in claim 1 wherein: one side of the first air inlet channel (1) located at the position where the first pressure reducing valve (5) faces the position where the first air inlet channel is connected with the gas storage steel cylinder (8) is connected with a first pressure transmitter (13), and one side of the second air inlet channel (2) located at the position where the second pressure reducing valve (6) faces the position where the second air inlet channel is connected with a second pressure transmitter (15).
5. The undisturbed switching device of carrier gas as claimed in claim 1 wherein: one side that lies in first relief pressure valve (5) on first inlet channel (1) towards switching mechanism (4) is connected with first manometer (14), one side that lies in second relief pressure valve (6) on second inlet channel (2) towards switching mechanism (4) is connected with second manometer (16).
6. The undisturbed switching device of carrier gas as claimed in claim 1 wherein: and a third pressure gauge (17) is connected to one side, facing the air outlet external interface, of the air outlet channel (3) and positioned on the constant value pressure reducing valve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211262773.8A CN115451335A (en) | 2022-10-15 | 2022-10-15 | Carrier gas undisturbed switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211262773.8A CN115451335A (en) | 2022-10-15 | 2022-10-15 | Carrier gas undisturbed switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115451335A true CN115451335A (en) | 2022-12-09 |
Family
ID=84311418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211262773.8A Pending CN115451335A (en) | 2022-10-15 | 2022-10-15 | Carrier gas undisturbed switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115451335A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2147415Y (en) * | 1993-03-25 | 1993-11-24 | 张傲义 | Multi-kind air source automatic distributing combined device |
| CN203322738U (en) * | 2013-07-01 | 2013-12-04 | 金宗友 | Full-automatic gas busbar and pneumatic switching device |
| CN208935814U (en) * | 2018-06-26 | 2019-06-04 | 南京瑞杨医用科技有限公司 | A kind of gas cylinder manifold device with automatic switching function |
| CN214375994U (en) * | 2021-05-01 | 2021-10-08 | 岳阳长炼机电工程技术有限公司 | Automatic control system for carrier gas switching of online analytical instrument |
| WO2021232544A1 (en) * | 2020-05-22 | 2021-11-25 | 湖州贝德流体设备有限公司 | Asc semi-automatic switching system |
| CN113790395A (en) * | 2021-09-03 | 2021-12-14 | 湖州贝德流体设备有限公司 | Full-automatic steel bottle switching air supply system |
| CN113790396A (en) * | 2021-08-03 | 2021-12-14 | 北京市公用工程设计监理有限公司 | Remote monitoring system and method for gas supply of LPG gasification pry |
| CN216894644U (en) * | 2022-03-22 | 2022-07-05 | 华能（天津）煤气化发电有限公司 | Ignition gas constant-pressure switching device of IGCC (integrated gasification combined cycle) gas turbine, ignition system, gas turbine and IGCC unit |
-
2022
- 2022-10-15 CN CN202211262773.8A patent/CN115451335A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2147415Y (en) * | 1993-03-25 | 1993-11-24 | 张傲义 | Multi-kind air source automatic distributing combined device |
| CN203322738U (en) * | 2013-07-01 | 2013-12-04 | 金宗友 | Full-automatic gas busbar and pneumatic switching device |
| CN208935814U (en) * | 2018-06-26 | 2019-06-04 | 南京瑞杨医用科技有限公司 | A kind of gas cylinder manifold device with automatic switching function |
| WO2021232544A1 (en) * | 2020-05-22 | 2021-11-25 | 湖州贝德流体设备有限公司 | Asc semi-automatic switching system |
| CN214375994U (en) * | 2021-05-01 | 2021-10-08 | 岳阳长炼机电工程技术有限公司 | Automatic control system for carrier gas switching of online analytical instrument |
| CN113790396A (en) * | 2021-08-03 | 2021-12-14 | 北京市公用工程设计监理有限公司 | Remote monitoring system and method for gas supply of LPG gasification pry |
| CN113790395A (en) * | 2021-09-03 | 2021-12-14 | 湖州贝德流体设备有限公司 | Full-automatic steel bottle switching air supply system |
| CN216894644U (en) * | 2022-03-22 | 2022-07-05 | 华能（天津）煤气化发电有限公司 | Ignition gas constant-pressure switching device of IGCC (integrated gasification combined cycle) gas turbine, ignition system, gas turbine and IGCC unit |
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