CN216811921U - Dual-fuel switching device for gas turbine and gas turbine - Google Patents
Dual-fuel switching device for gas turbine and gas turbine Download PDFInfo
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- CN216811921U CN216811921U CN202220267616.5U CN202220267616U CN216811921U CN 216811921 U CN216811921 U CN 216811921U CN 202220267616 U CN202220267616 U CN 202220267616U CN 216811921 U CN216811921 U CN 216811921U
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Abstract
The device comprises a gas fuel pipeline, a liquid fuel pipeline, a first cleaning and blowing fluid pipeline, a second cleaning and blowing fluid pipeline, a detection unit, a control unit, a first switch unit arranged on the gas fuel pipeline, a second switch unit arranged on the liquid fuel pipeline, a third switch unit arranged on the first cleaning and blowing fluid pipeline and a fourth switch unit arranged on the second cleaning and blowing fluid pipeline; the device comprises a gas fuel pipeline, a first blowing fluid pipeline, a first branch pipeline, a second branch pipeline, a detection unit and a control unit, wherein the first blowing fluid pipeline is communicated with a first blowing point of the gas fuel pipeline; the detection unit, the first switch unit and the second switch unit are electrically connected with the control unit, so that the switching efficiency and the reliability are improved.
Description
Technical Field
The application relates to the technical field of gas turbines, in particular to a dual-fuel switching device for a gas turbine and the gas turbine.
Background
Gas turbines, whether as gas turbine power plants for power generation or as gas turbine drive plants for drive, require continuous and stable operation during operation. Because of the structure of the gas turbine and the characteristics of the thermodynamic cycle, the gas turbine needs to operate stably and continuously with fuel in a stable process parameter range (such as pressure, temperature, flow, cleanliness and the like). In an actual operation site, because one fuel is difficult to continuously maintain in a required range, the fuel needs to be switched to another fuel for supply before the currently used fuel is insufficient or the condition is exceeded, so that the gas turbine is prevented from tripping and even the operation is interrupted. However, when switching from liquid fuel to gaseous fuel, it is usually necessary to manually determine whether the gas in the gaseous fuel line satisfies the safe switching condition, resulting in low switching efficiency and reliability.
SUMMERY OF THE UTILITY MODEL
The application provides a double fuel auto-change over device and gas turbine for gas turbine to when carrying out liquid fuel and switching to gaseous fuel in solving current, need the manual work to judge usually whether gaseous in the gaseous fuel pipeline satisfies the safe switching condition, lead to switching efficiency and the lower technical problem of reliable degree.
In a first aspect, the present application provides a dual fuel switching apparatus for a gas turbine, the apparatus includes a gas fuel pipeline, a liquid fuel pipeline, a first pipeline for cleaning and blowing fluid, a second pipeline for cleaning and blowing fluid, a detection unit, a control unit, and a first switch unit disposed on the gas fuel pipeline, a second switch unit disposed on the liquid fuel pipeline, a third switch unit disposed on the first pipeline for cleaning and blowing fluid, and a fourth switch unit disposed on the second pipeline for cleaning and blowing fluid;
the gas fuel pipeline at the downstream of the first blowing point is provided with a first detection point, the gas fuel pipeline at the downstream of the first detection point is divided into a first branch pipeline and a second branch pipeline, the detection unit is arranged on the first branch pipeline, and the second branch pipeline is communicated with the gas turbine;
said second purge fluid conduit being in communication with a second purge point of said liquid fuel conduit, said liquid fuel conduit downstream of said second purge point being in communication with said gas turbine;
the detection unit, the first switch unit, the second switch unit, the third switch unit and the fourth switch unit are all electrically connected with the control unit.
Optionally, the first switching unit comprises a first block valve located upstream of the first purge point, a second block valve located on the first branch line, and a third block valve located on the second branch line;
the detection unit comprises a detector which is arranged on the first branch pipeline at the downstream of the second block valve.
Optionally, the first switch unit further comprises a check valve disposed on the gas fuel line between the first purge point and the first detection point.
Optionally, the apparatus further comprises a fluid displacement line and a fifth switching unit;
wherein the fluid displacement line communicates with the gas fuel line upstream of the first shut-off valve, and the fifth switching unit is provided on the fluid displacement line.
Optionally, the device further comprises a fluid temperature regulating pipeline, a heat exchanger and a regulating valve;
the temperature of the fluid in the fluid temperature adjusting pipeline is higher than that of the fluid in the first cleaning and blowing fluid pipeline, and the heat exchanger is arranged at the intersection position of the first cleaning and blowing fluid pipeline and the fluid temperature adjusting pipeline;
the regulating valve is arranged on the fluid temperature regulating pipeline.
Optionally, the device further comprises a temperature adjusting unit, and the temperature adjusting unit is arranged on the first pipeline of the cleaning and blowing fluid.
Optionally, the gas fuel line further includes a third branch line communicating with the gas fuel line upstream of the first shut-off valve, and a sixth switching unit provided on the third branch line.
Optionally, the number of the third branch pipelines, the sixth switch unit, and the second blowing fluid pipelines is N, each third branch pipeline is respectively communicated with one second blowing fluid pipeline, and N is an integer greater than or equal to 1.
Optionally, the liquid fuel line downstream of the second switching unit comprises N fourth branch lines; each second blowing fluid pipeline is communicated with a second blowing point of one fourth branch pipeline.
In a second aspect, the present application also provides a gas turbine comprising a dual fuel switching arrangement for a gas turbine as claimed in any one of the first aspect.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
in an embodiment of the application, the dual-fuel switching device for the gas turbine comprises a gas fuel pipeline, a liquid fuel pipeline, a first pipeline of a cleaning and blowing fluid, a second pipeline of the cleaning and blowing fluid, a detection unit, a control unit, a first switch unit arranged on the gas fuel pipeline, a second switch unit arranged on the liquid fuel pipeline, a third switch unit arranged on the first pipeline of the cleaning and blowing fluid, and a fourth switch unit arranged on the second pipeline of the cleaning and blowing fluid; the gas fuel pipeline at the downstream of the first blowing point is provided with a first detection point, the gas fuel pipeline at the downstream of the first detection point is divided into a first branch pipeline and a second branch pipeline, the detection unit is arranged on the first branch pipeline, and the second branch pipeline is communicated with the gas turbine; said second purge fluid conduit being in communication with a second purge point of said liquid fuel conduit, said liquid fuel conduit downstream of said second purge point being in communication with said gas turbine; the detection unit, the first switch unit, the second switch unit, the third switch unit and the fourth switch unit are all electrically connected with the control unit. By the device, before the liquid fuel is switched to the gas fuel, the control unit controls the switching states of the first switching unit, the second switching unit, the third switching unit and the fourth switching unit, the air in the gas fuel pipeline is cleaned by the cleaning fluid in the cleaning fluid first pipeline, the components and the content of the gas in the gas fuel pipeline are detected by the detection unit in real time, and when the components and the content of the gas in the gas fuel pipeline reach safe switching conditions, the control unit switches the switching states of the first switching unit, the second switching unit, the third switching unit and the fourth switching unit, turns off the cleaning fluid in the cleaning fluid first pipeline, and supplies the fuel to the gas turbine through the gas fuel pipeline, so that the switching of the liquid fuel to the gas fuel is completed. Therefore, the gas in the gas fuel pipeline can be automatically detected, and the switching process from the liquid fuel to the gas fuel can be automatically completed according to the detection result, so that the switching efficiency and the reliability are improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a dual fuel switching apparatus for a gas turbine according to an embodiment of the present application;
fig. 2 is a second schematic structural diagram of a dual fuel switching apparatus for a gas turbine according to an embodiment of the present application;
FIG. 3 is a third schematic structural diagram of a dual fuel switching apparatus for a gas turbine according to an embodiment of the present application;
fig. 4 is a fourth schematic structural diagram of a dual fuel switching apparatus for a gas turbine according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a dual fuel switching apparatus for a gas turbine according to an embodiment of the present application. As shown in fig. 1, the dual fuel switching apparatus for a gas turbine includes: the device comprises a gas fuel pipeline 110, a liquid fuel pipeline 210, a first pipeline 310 of purge fluid, a second pipeline 410 of purge fluid, a detection unit 510, a control unit 610, a first switch unit 120 arranged on the gas fuel pipeline 110, a second switch unit 220 arranged on the liquid fuel pipeline 210, a third switch unit 320 arranged on the first pipeline 310 of purge fluid and a fourth switch unit 420 arranged on the second pipeline 410 of purge fluid;
the first purge fluid pipeline 310 is communicated with a first purge point a of the gas fuel pipeline 110, the gas fuel pipeline 110 downstream of the first purge point a is provided with a first detection point B, the gas fuel pipeline 110 downstream of the first detection point B is divided into a first branch pipeline and a second branch pipeline, the detection unit 510 is arranged on the first branch pipeline, and the second branch pipeline is communicated with the gas turbine;
the second purge fluid conduit 410 is in communication with a second purge point C of the liquid fuel conduit 210, the liquid fuel conduit 210 downstream of the second purge point C being in communication with the gas turbine;
the detection unit 510, the first switch unit 120, the second switch unit 220, the third switch unit 320 and the fourth switch unit 420 are electrically connected to the control unit 610.
Specifically, the gas fuel line 110 is used to provide gas fuel, such as natural gas, to the gas turbine. The liquid fuel line 210 is used to provide liquid fuel, such as fuel or the like, to the gas turbine. The purge fluid first line 310 is used to purge the gaseous fuel lines with the purge fluid when the gaseous fuel line 110 is closed. The second purging fluid line 410 is used to purge the liquid fuel lines with the purging fluid when the liquid fuel line 210 is closed. The lengths and diameters of the gas fuel line 110, the liquid fuel line 210, the purge fluid first line 310 and the purge fluid second line 410 may be set according to actual needs, and the present application is not particularly limited. The gas fuel line 110, the liquid fuel line 210, the first purge fluid line 310, and the second purge fluid line 410 are all provided with a switch unit, such as a check valve, a shut-off valve, etc., for controlling the flow direction and the flow rate of the fuel or the fluid in each line. In addition, the gas fuel line 110, the liquid fuel line 210, the first purge fluid line 310, and the second purge fluid line 410 may be further provided with a temperature sensor, a pressure sensor, a flow meter, and other elements for monitoring the parameter state of the fuel or the fluid in each line.
The detecting unit 510 is used for detecting the composition and content of the gas in the first branch pipeline, and transmitting the detection result to the control unit 610. The control unit 610 may determine the switching states of the first switching unit 120, the second switching unit 220, the third switching unit 320 and the fourth switching unit 420 according to the detection result, for example, before the liquid fuel is switched to the gas fuel, the control unit 610 controls the switching states of the first switching unit 120, the second switching unit 220, the third switching unit 320 and the fourth switching unit 420, the air in the gas fuel pipeline 110 is purged by the purge fluid in the first pipeline 310 of the purge fluid, the composition and the content of the gas in the gas fuel pipeline 110 are detected by the detection unit 510 in real time, and when the composition and the content of the gas in the gas fuel pipeline 110 reach the safe switching condition, the control unit 610 switches the switching states of the first switching unit 120, the second switching unit 220, the third switching unit 320 and the fourth switching unit 420, the switching of liquid fuel to gaseous fuel is accomplished by shutting off the purge fluid in the purge fluid first line 310 and supplying fuel to the gas turbine through the gaseous fuel line 110. Therefore, the gas in the gas fuel pipeline 110 can be automatically detected, and the switching process from the liquid fuel to the gas fuel can be automatically completed according to the detection result, so that the switching efficiency and the reliability are improved.
Further, referring to fig. 2, fig. 2 is a second schematic structural diagram of a dual-fuel switching apparatus for a gas turbine according to an embodiment of the present application. The first switching unit 120 comprises a first block valve 1201, a second block valve 1202 and a third block valve 1203, the first block valve 1201 is located upstream of the first purge point a, the second block valve 1202 is located on the first branch line, the third block valve 1203 is located on the second branch line;
the detection unit 510 includes a detector disposed on the first branch line downstream of the second block valve 1202.
Specifically, the number of the first shut-off valves 1201 may be one or more. In an alternative embodiment, a plurality of first shut-off valves 1201 may be provided to switch-control a plurality of positions of gas fuel line 110. Each of the stop valves, such as the first stop valve 1201, the second stop valve 1202, the third stop valve 1203, etc., is correspondingly provided with a valve position sensor and an actuator, the valve position sensor and the actuator are electrically connected to the control unit 610, and the control unit 610 can send an adjustment instruction to the actuator and receive the state information of the stop valve collected by the valve position sensor, so as to complete the on-off control of the stop valve.
In this way, before the liquid fuel is switched to the gas fuel, the first block valve 1201 and the second block valve 1202 are opened, the third block valve 1203 is closed, the second switch unit 220 on the purge fluid first pipe 310 is opened, the gas fuel pipe 110 is purged with the purge fluid in the purge fluid first pipe 310 and/or the gas fuel input from the input end of the gas fuel pipe 110, and the residual air on the gas fuel pipe 110 is purged from the first branch pipe. Since the detector is disposed on the first branch line, the detector can detect the gas cost and the gas content in the gas fuel line 110 in the purging process in real time, and transmit the detection result to the control unit 610 in real time. The control unit 610 determines whether the gas in the gas fuel pipeline 110 meets a safe switching condition, such as the oxygen content is lower than a preset threshold, according to the detection result, and when the gas in the gas fuel pipeline 110 meets the safe switching condition, the control unit controls the first block valve 1201 and the third block valve 1203 to be opened, and controls the second block valve 1202 and the second switch unit 220 to be closed, so as to transmit the input gas fuel to the wheel of the internal combustion engine through the second branch pipeline of the gas fuel pipeline 110.
It should be noted that, before and after the liquid fuel is switched to the gas fuel, the control unit 610 also controls the third switching unit 320 and the fourth switching unit 420 to change accordingly. For example, before switching from liquid fuel to gas fuel, the gas turbine needs to be supplied with liquid fuel through the liquid fuel line 210 by turning on the third switch unit 320 and turning off the fourth switch; after the liquid fuel is completely switched to the gas fuel, the third switch unit 320 needs to be closed, the fourth switch needs to be opened, and the liquid fuel remained in the liquid fuel pipeline 210 needs to be purged through the purge fluid second pipeline 410.
In this embodiment, the positions of the first cut-off valve 1201, the second cut-off valve 1202 and the third cut-off valve 1203 are set, which is beneficial to real-time detection of gas components and content in the gas fuel pipeline 110 during the purging process, so as to ensure that the gas fuel pipeline 110 meets the safe switching condition and improve the switching safety.
Further, the first switching unit 120 further includes a check valve 1204, and the check valve 1204 is disposed on the gas fuel line 110 between the first purge point a and the first detection point B.
In one embodiment, a check valve 1204 may be provided in the gaseous fuel line 110 between the first purge point A and the first check point B, which provides the benefits of: compared to the prior art, where the check valve 1204 is usually arranged upstream of the purge point, there is a problem that it is not possible to purge the section of the pipe between the first purge point a and the check valve 1204. While the present embodiment may purge all gaseous fuel conduits downstream of the first purge point a, including the conduit between the check valve 1204 to the third shut-off valve 1203. Therefore, the effect of cleaning and blowing the pipeline is improved, and the switching safety is improved.
Further, the apparatus further comprises a fluid displacement line 710 and a fifth switching unit 720;
the fluid replacement line 710 communicates with the gas fuel line 110 upstream of the first shut-off valve 1201, and the fifth switching unit 720 is provided in the fluid replacement line 710.
Specifically, the fluid replacement pipeline 710 is used to replace air in the gas fuel pipeline, such as with an inert gas, before the gas fuel pipeline is first used. Before the gas fuel pipeline is used for the first time, the control unit 610 may control the fifth switching unit 720, the first block valve 1201 and the second block valve 1202 to be opened, and the third block valve 1203 to be closed, so that the inert gas input through the fluid replacement pipeline 710 discharges the original air in the gas fuel pipeline, thereby effectively preventing the risk of explosion caused by the fact that the air in the gas fuel pipeline and the natural gas are conveyed to the combustion chamber of the gas turbine together.
Further, with continued reference to fig. 2, the dual fuel switching apparatus further includes a fluid temperature conditioning circuit 810, a heat exchanger 820, and a conditioning valve 830;
the temperature of the fluid in the fluid temperature adjusting pipeline 810 is higher than that of the fluid in the first blowing fluid pipeline 310, and the heat exchanger 820 is arranged at the intersection position of the first blowing fluid pipeline 310 and the fluid temperature adjusting pipeline 810;
the regulating valve 830 is disposed on the fluid temperature regulating line 810.
In an embodiment, the heat exchanger 820 is used for transferring the temperature of the fluid in the fluid temperature adjusting pipeline 810 to the fluid in the first blowing fluid pipeline 310, so that the temperature of the fluid in the first blowing fluid pipeline 310 is increased, and the fluid in the fluid temperature adjusting pipeline 810 after heat exchange by the heat exchanger 820 is output to an external heating device for heating, and thus, the fluid in the first blowing fluid pipeline 310 can be heated in a circulating manner. The adjusting valve 830 can adjust the speed of the fluid in the fluid temperature adjusting pipeline 810, so as to adjust the heat exchange amount of the heat exchanger 820. In this way, the purging fluid in the first purging fluid pipeline 310 can be heated by adding the fluid temperature adjusting pipeline 810, the heat exchanger 820 and the adjusting valve 830, so as to improve the pipeline purging efficiency.
Further, referring to fig. 3, fig. 3 is a third schematic structural diagram of a dual-fuel switching apparatus for a gas turbine according to an embodiment of the present application. The dual fuel switching device further comprises a temperature adjusting unit 840, and the temperature adjusting unit 840 is arranged on the first blowing fluid pipeline 310.
In another embodiment, a temperature adjusting unit 840 is directly added to the first pipeline 310 of the purge fluid without adding the fluid temperature adjusting pipeline 810, the heat exchanger 820 and the adjusting valve 830, and the temperature adjusting unit 840 is an independent structure or a structure electrically connected to the control unit 610. Specifically, the temperature adjusting unit 840 may be a device having a temperature adjusting function, such as a heater. In this way, the temperature adjusting unit 840 can also heat the purge fluid in the purge fluid first pipeline 310 to improve the pipeline purge efficiency.
Further, referring to fig. 4, fig. 4 is a fourth schematic structural diagram of a dual fuel switching apparatus for a gas turbine according to an embodiment of the present application. The gaseous fuel line 110 further comprises a third branch line 1103 and a sixth switching unit 130, one end of the third branch line 1103 communicating with the gaseous fuel line 110 upstream of the first shut-off valve 1201, the other end of the third branch line 1103 communicating with the second purge fluid line 410;
the sixth switching unit 130 is disposed on the third branch line 1103.
In an embodiment, the purge fluid may be provided to the purge fluid second pipeline 410 through the third branch pipeline 1103 of the gas fuel pipeline 110, so that not only the number of the whole pipelines can be reduced, but also the liquid fuel in the liquid fuel pipeline can be purged by using the gas fuel as the purge fluid.
Further, with reference to fig. 4, the number of the third branch conduits 1103, the sixth switching units 130 and the second purging fluid conduits 410 is N, each third branch conduit 1103 is communicated with one second purging fluid conduit 410, and N is an integer greater than or equal to 1.
In an embodiment, the number of the third branch line 1103, the sixth switching unit 130, and the second purging fluid line 410 may be one or more, and the application is not limited in this application. When the number of the third branch pipes 1103, the sixth switching unit 130 and the second purging fluid pipes 410 is plural, each third branch pipe 1103 can be communicated with each second purging fluid pipe 410, and the gaseous fuel in the gaseous fuel pipeline is output to each second purging fluid pipe 410 through the third branch pipe 1103, so as to purge the liquid fuel pipeline. For example, as shown in fig. 4, the number of the third branch 1103 and the second blowing fluid line 410 is 2, and 2 blowing fluid lines 410 are supplied with the blowing fluid through 2 third branch 1103.
Further, the liquid fuel line 210 downstream of the second switching unit 220 includes N fourth branch lines 2101; each second purging fluid line 410 communicates with a second purging point C of a respective fourth branch line 2101.
In an embodiment, the number of the fourth branch pipes 2101 of the liquid fuel pipe 210 may be one or more, and the present application is not particularly limited. When the number of the fourth branch pipes 2101 of the liquid fuel pipe 210 is plural, the number of the fourth branch pipes 2101 of the liquid fuel pipe 210 corresponds to the number of the purge fluid second pipes 410. Purging of liquid fuel in the fourth branch 2101 of each liquid fuel line 210 is performed by each purging fluid second line 410 in number. Specifically, during the process of switching the liquid fuel to the gas fuel, the control unit 610 controls the second switch unit 220 to be closed, the fourth switch unit 420 to be opened, and the liquid fuel in the liquid fuel line 210 is purged to the combustion chamber of the fuel turbine to be combusted through the purge fluid in the second type purge line 410. After the liquid fuel is switched to the gas fuel, the control unit 610 controls the second switch unit 220 to be continuously turned off, the fourth switch unit 420 is continuously turned on, and the liquid fuel remained in the liquid fuel pipeline 210 is cleaned and blown out of the pipeline through the cleaning fluid in the second type cleaning and blowing pipeline 410, so that carbon deposition in the pipeline is prevented.
In this embodiment, since N may be any integer greater than or equal to 1, it is possible to meet the requirements of different types of gas turbines, and achieve flexible control.
Besides, the embodiment of the application also provides a gas turbine which comprises the dual-fuel switching device for the gas turbine. The gas turbine can comprise the structure of any embodiment of the dual-fuel switching device for the gas turbine, and the same functions are realized, so that the detailed description is omitted.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely illustrative of particular embodiments of the utility model that enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A dual-fuel switching device for a gas turbine is characterized by comprising a gas fuel pipeline, a liquid fuel pipeline, a first cleaning and blowing fluid pipeline, a second cleaning and blowing fluid pipeline, a detection unit, a control unit, a first switch unit, a second switch unit, a third switch unit and a fourth switch unit, wherein the first switch unit, the second switch unit, the third switch unit and the fourth switch unit are arranged on the gas fuel pipeline, the second switch unit, the third switch unit and the fourth switch unit respectively;
the gas fuel pipeline at the downstream of the first blowing point is provided with a first detection point, the gas fuel pipeline at the downstream of the first detection point is divided into a first branch pipeline and a second branch pipeline, the detection unit is arranged on the first branch pipeline, and the second branch pipeline is communicated with the gas turbine;
said second purge fluid conduit being in communication with a second purge point of said liquid fuel conduit, said liquid fuel conduit downstream of said second purge point being in communication with said gas turbine;
the detection unit, the first switch unit, the second switch unit, the third switch unit and the fourth switch unit are all electrically connected with the control unit.
2. The apparatus according to claim 1, wherein the first switching unit comprises a first cut-off valve located upstream of the first purge point, a second cut-off valve located on the first branch line, and a third cut-off valve located on the second branch line;
the detection unit comprises a detector which is arranged on the first branch pipeline at the downstream of the second cut-off valve.
3. The device according to claim 2, characterized in that the first switching unit further comprises a one-way valve arranged on the gas fuel line between the first purging point and the first detection point.
4. The device of claim 2, further comprising a fluid displacement line and a fifth switching unit;
wherein the fluid replacement line is in communication with the gas fuel line upstream of the first shutoff valve, and the fifth switching unit is disposed on the fluid replacement line.
5. The apparatus of claim 1, further comprising a fluid temperature conditioning circuit, a heat exchanger, and a conditioning valve;
the temperature of the fluid in the fluid temperature adjusting pipeline is higher than that of the fluid in the first cleaning and blowing fluid pipeline, and the heat exchanger is arranged at the intersection position of the first cleaning and blowing fluid pipeline and the fluid temperature adjusting pipeline;
the regulating valve is arranged on the fluid temperature regulating pipeline.
6. The apparatus of claim 1, further comprising a temperature regulating unit disposed on the first purging fluid line.
7. The apparatus according to claim 2, wherein the gaseous fuel line further comprises a third branch line and a sixth switching unit, one end of the third branch line being in communication with the gaseous fuel line upstream of the first shut-off valve, the other end of the third branch line being in communication with the second line of purge fluid;
the sixth switching unit is disposed on the third branch line.
8. The device according to claim 7, wherein the number of the third branch pipes, the sixth switch unit and the second blowing fluid pipes is N, each third branch pipe is respectively communicated with one second blowing fluid pipe, and N is an integer greater than or equal to 1.
9. The apparatus of claim 8, wherein the liquid fuel line downstream of the second switching unit comprises N fourth branch lines; each second blowing fluid pipeline is communicated with a second blowing point of one fourth branch pipeline.
10. A gas turbine comprising a dual fuel switching arrangement for a gas turbine as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220267616.5U CN216811921U (en) | 2022-02-09 | 2022-02-09 | Dual-fuel switching device for gas turbine and gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220267616.5U CN216811921U (en) | 2022-02-09 | 2022-02-09 | Dual-fuel switching device for gas turbine and gas turbine |
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| CN216811921U true CN216811921U (en) | 2022-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220267616.5U Active CN216811921U (en) | 2022-02-09 | 2022-02-09 | Dual-fuel switching device for gas turbine and gas turbine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508427A (en) * | 2022-02-09 | 2022-05-17 | 烟台杰瑞石油装备技术有限公司 | Multi-fuel switching device and method for gas turbine and gas turbine |
-
2022
- 2022-02-09 CN CN202220267616.5U patent/CN216811921U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508427A (en) * | 2022-02-09 | 2022-05-17 | 烟台杰瑞石油装备技术有限公司 | Multi-fuel switching device and method for gas turbine and gas turbine |
| WO2023151152A1 (en) * | 2022-02-09 | 2023-08-17 | 烟台杰瑞石油装备技术有限公司 | Multi-fuel switch device and method used for gas turbine, and gas turbine |
| CN114508427B (en) * | 2022-02-09 | 2024-06-11 | 烟台杰瑞石油装备技术有限公司 | Multi-fuel switching device and method for gas turbine and gas turbine |
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