Economical device for individual flue temperature regulation, and control method

Abstract

The present invention relates to the technical field of coke oven heating, and in particular to an economical device for individual flue temperature regulation, and a control method. An input end of each heating gas unit I and an input end of each heating gas unit II are respectively connected to a heating gas main, and an output end of each heating gas unit I and an output end of each heating gas unit II are connected to corresponding flues; one end of a regulating unit is connected to the corresponding heating gas unit I, and the other end of the regulating unit is connected to the corresponding heating gas unit II. The method comprises control under normal operating conditions, control in a steam purging state, and control in a maintenance state. The present invention has the following advantages: the communication of two heating gas mains is realized, one regulating valve can be used to complete flow regulation of two heating gas lines in a same flue, and online maintenance and manual regulation can be implemented by changing the opening degree position of a T-type plug valve; and the regulating valve is connected to shut-off valves by means of a tee fitting, so that the regulating valve can be disassembled at any time in the event of a failure.

Description

An economical single-hole combustion chamber temperature control device and control method Technical Field

[0001] This invention relates to the field of coke oven heating technology, and in particular to an economical single-hole combustion chamber temperature control device and control method. Background Technology

[0002] Single-hole combustion chamber temperature regulation is a popular technology in coke oven heating. The mainstream approach is to add a regulating valve between the regulating cock and orifice plate box, or between the orifice plate box and the exchange cock, for each combustion chamber. In the prior art, patent CN221051793U, entitled "A Coke Oven Single-Hole Combustion Chamber Temperature Regulation Device," includes a gas horizontal pipe, an exchange cock, branch pipe adjustment cocks, an orifice plate box, and a coke oven gas main pipe. The gas horizontal pipe is vertically connected to the exchange cock via a pipe, and the exchange cock is connected to the branch pipe adjustment cock via a pipe. An orifice plate box is installed on the pipe connecting the exchange cock and the branch pipe adjustment cock. The branch pipe adjustment cock is connected to the coke oven gas main pipe via a pipe. The device is characterized by further including a regulating valve, a manual valve, a regulating valve cylinder, and a regulating controller. The system includes a gas supply pipe, signal cable, and cable tray. The regulating valve is located on the pipe between the exchange cock and the orifice plate box. The inlet of the regulating valve is connected to a manual valve, and the inlet of the manual valve is connected to the regulating valve cylinder. The air inlet of the regulating valve cylinder is connected to the main gas supply pipe via the gas supply pipe. The electrical signal line of the regulating valve cylinder is connected to the I / O port of the regulating controller. The signal cable of the regulating controller is connected to the control system via the cable tray. The system has the following defects:

[0003] 1. The regulating valve is large in size, and its adjustment accuracy can only achieve coarse adjustment, which cannot accurately adjust the combustion chamber temperature, and the adjustment effect is not significant.

[0004] 2. Due to the large number of coke oven combustion chambers, taking a 6.25m tamping coke oven with 65 carbonization chambers as an example, 132 DN100 regulating valves are required. The investment cost, maintenance workload and subsequent energy consumption are all very high, which brings huge economic pressure to the factory owner. Summary of the Invention

[0005] The purpose of this invention is to provide an economical single-hole combustion chamber temperature control device and control method. It uses a small-diameter regulating valve connected between the first heating gas unit and the second heating gas unit, which greatly reduces the number of regulating valves and improves the regulation accuracy. It has the advantages of low cost and high efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An economical single-hole combustion chamber temperature control device includes a first heating gas unit, a second heating gas unit, a regulating gas pipeline, and a regulating unit. The input end of each first heating gas unit and the input end of each second heating gas unit are respectively connected to the main heating gas pipeline. The output end of each first heating gas unit and the output end of each second heating gas unit are connected to the corresponding combustion chamber. One end of the regulating unit is connected to the corresponding first heating gas unit, and the other end of the regulating unit is connected to the corresponding second heating gas unit.

[0008] The regulating unit includes branch pipe 1, branch pipe 2, and branch pipe 3. One end of branch pipe 1 and branch pipe 2 are respectively connected to the corresponding heating gas unit 1, and the other end of branch pipe 1 and branch pipe 2 are respectively connected to the corresponding heating gas unit 2. One end of branch pipe 3 is connected to branch pipe 1, and the other end of branch pipe 3 is connected to branch pipe 2.

[0009] The first gas heating unit is equipped with an adjusting valve A, an orifice box A, and an exchange valve A from bottom to top. The second gas heating unit is equipped with an adjusting valve B, an orifice box B, and an exchange valve B from bottom to top. A T-type plug valve is installed on the branch pipe. The pipe connection between the orifice box A and the exchange valve A is connected to the first passage of the T-type plug valve. The pipe connection between the orifice box B and the exchange valve B is connected to the second passage of the T-type plug valve. The third passage of the T-type plug valve is connected to one end of the branch pipe.

[0010] Branch pipe three is equipped with a regulating valve and a shut-off valve D from bottom to top. The pipe connection between the regulating valve and the shut-off valve D is connected to one end of the shut-off valve C, and the other end of the shut-off valve C is connected to the steam purging pipeline.

[0011] Branch pipe 2 is equipped with stop valve A, stop valve B, and a tee connector. The other two ends of the tee connector are connected to stop valve A and stop valve B respectively, and the remaining end of the tee connector is connected to the other end of branch pipe 3.

[0012] Economical single-orifice combustion chamber temperature control methods specifically include:

[0013] S1. Control under normal operating conditions;

[0014] S2, Steam purging status control;

[0015] S3, Maintenance Status Control.

[0016] In S1, under normal operating conditions, the T-type plug valve is positioned at 90°, specifically including:

[0017] 1) When the regulating cock A, orifice plate box A, exchange cock A, exchange cock B, and regulating valve are working, the regulating cock B and orifice plate box B are in standby mode, and the regulating cock B, stop valve B, and stop valve D are closed; the regulating cock A, stop valve A11, and stop valve C are open, and the exchange cock A and exchange cock B are alternately opened and closed with the exchanger.

[0018] 2) When the regulating cock B, orifice plate box B, exchange cock A, exchange cock B, and regulating valve are working, regulating cock A and orifice plate box A are in standby mode, and regulating cock A, stop valve A, and stop valve D are closed; regulating cock B, stop valve B, and stop valve C are open, and exchange cock A and exchange cock B are alternately opened and closed with the exchanger.

[0019] In S2, the steam purging status control, with the T-type plug valve at 0°, involves steam purging of the orifice plate box A and the regulating valve, specifically including:

[0020] Open the regulating valve B and close the shut-off valve B. The heated gas enters the combustion chamber through the regulating valve B, the orifice plate box B, and the exchange valve B.

[0021] When the hydraulic exchanger closes the exchange valve A, it opens the regulating valve A, the shut-off valve A11, the shut-off valve B, and the shut-off valve D, allowing purge steam to enter from the shut-off valve D.

[0022] After purging is completed, close the adjusting stopcock B, adjust the T-type stopcock valve to 90°, and restore the orifice plate box A and the adjusting valve to their working state.

[0023] In S2, the steam purging status control, with the T-type plug valve at 180°, involves steam purging of the orifice box B and the regulating valve, specifically including:

[0024] Close the shut-off valve A11 and open the regulating cock A. The heated gas enters the combustion chamber through the regulating cock A, orifice plate box A, and exchange cock A.

[0025] When the hydraulic exchanger closes the exchange valve B, it opens the regulating valve B, the shut-off valve B, the shut-off valve C, and the shut-off valve D, and the purging steam enters from the shut-off valve D.

[0026] After purging is completed, close the regulating stopcock A, the T-type stopcock valve is at 90°, and the orifice plate box B and regulating valve return to their working state.

[0027] In S3, during maintenance control, the T-type plug valve is located at 0° or 180°. When the regulating valve is being maintained, shut-off valves A11, B, C, and D are closed.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. A T-type plug valve is installed on branch pipe one. The pipe connection between orifice plate box A and exchange plug A is connected to the first passage of the T-type plug valve. The pipe connection between orifice plate box B and exchange plug B is connected to the second passage of the T-type plug valve. The third passage of the T-type plug valve is connected to branch pipe three. This structure realizes the connection of two heating gas main pipes. It can use one regulating valve to complete the flow regulation of two gas heating pipes in the same combustion chamber. By changing the opening position of the T-type plug valve, online maintenance and manual adjustment can be realized.

[0030] 2. A stop valve D is provided between the regulating valve and the T-type plug valve. The regulating valve is connected to the stop valve A and the stop valve B respectively using a three-way connector, which ensures that the regulating valve can be disassembled at any time in case of failure, without affecting normal production.

[0031] 3. One end of the shut-off valve A and shut-off valve B is connected to the heating gas pipeline via the regulating cock, and the other end is connected to the regulating valve via a tee connector, which can realize the switching between the working circuit and the standby circuit of the heating gas pipeline at any time.

[0032] 4. A shut-off valve C is installed between the regulating valve and the shut-off valve D. The shut-off valve C can be used to perform online steam purging of the heating gas pipeline to prevent tar and naphthalene from clogging the heating gas pipeline and valves.

[0033] 5. A small-diameter regulating valve is used to connect between heating gas pipeline one and heating gas pipeline two. This reduces the size of the regulating valve without affecting its regulating function, significantly reducing the number of regulating valves and lowering investment costs. Attached Figure Description

[0034] Figure 1 is a schematic diagram of an economical single-hole combustion chamber temperature control device and its usage method;

[0035] Figure 2. Schematic diagram of process operation with A-path working and B-path in standby state.

[0036] Figure 3. Schematic diagram of process operation with B-path working and A-path in standby state.

[0037] Figure 4. Schematic diagram of process operation under maintenance conditions of Route A.

[0038] Figure 5. Schematic diagram of process operation under maintenance conditions of route B.

[0039] Figure 6. Schematic diagram of the overhaul process of the control valve.

[0040] Figure 7 Schematic diagram of a device that replaces an orifice plate with a regulating valve.

[0041] Figure 8 Schematic diagram of T-type plug operation

[0042] In the diagram: 1-Adjusting cock A; 2-Orifice plate box A; 3-Exchange cock A; 4-T-connector A; 5-Adjusting cock B; 6-Orifice plate box B; 7-Exchange cock B; 8-T-connector B; 9-T-type cock valve; 10-Adjusting valve; 11-Stop valve A; 12-Stop valve B; 13-Stop valve C; 14-Stop valve D; 15-T-connector. Detailed Implementation

[0043] The present invention will now be described in detail with reference to the accompanying drawings, but it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0044] The following embodiments are implemented based on the technical solution of the present invention, providing detailed implementation methods and specific operation processes. However, the scope of protection of the present invention is not limited to the following embodiments. Unless otherwise specified, the methods used in the following embodiments are conventional methods.

[0045] Example 1:

[0046] An economical single-hole combustion chamber temperature control device, as shown in Figure 1, includes a heating gas unit one, a heating gas unit two, a regulating gas pipeline, and a regulating unit. The input ends of each heating gas unit one and heating gas unit two are connected to the main heating gas pipe, respectively. The output ends of each heating gas unit one and heating gas unit two are connected to the corresponding combustion chamber. Heating gas unit one, from bottom to top, has a regulating valve A1, an orifice plate box A2, and an exchange valve A3 arranged sequentially. The remaining two ends of a tee connector A4 are connected to the orifice plate box A2 and the exchange valve A3, respectively. Heating gas unit two, from bottom to top, has a regulating valve B5, an orifice plate box B6, and an exchange valve B7 arranged sequentially. The remaining two ends of a tee connector B8 are connected to the orifice plate box B6 and the exchange valve B7, respectively. The unit includes branch pipe 1, branch pipe 2, and branch pipe 3. Branch pipe 1 is equipped with a T-type plug valve 9. Branch pipe 2 is equipped with a stop valve A11, a stop valve B12, and a tee connector 15. Branch pipe 3 is equipped with a regulating valve 10 and a stop valve D14 from bottom to top. The pipe connection between regulating valve 10 and stop valve D14 is connected to one end of stop valve C13. The other end of stop valve C13 is connected to the steam purging pipeline. The remaining end of tee connector A4 is connected to the first passage of T-type plug valve 9. The remaining end of tee connector B8 is connected to the second passage of T-type plug valve 9. The third passage of T-type plug valve 9 is connected to one end of branch pipe 3. The remaining two ends of tee connector 15 are connected to stop valve A11 and stop valve B12, respectively. The remaining end of tee connector 15 is connected to the other end of branch pipe 3.

[0047] The regulating valve 10 can be a pneumatic or electric regulating valve, and can be a single-seat valve, butterfly valve, or V-ball valve. The size is between DN15 and DN40, and the flow regulation range is adjustable. The design temperature of the regulating valve 10 is 200°C, and the design pressure of the regulating valve 10 is 1MPa. The positioner of the regulating valve 10 is explosion-proof. In case of failure, the valve position of the regulating valve 10 can be maintained, and a valve position feedback signal can be output.

[0048] The shut-off valve D14 is used to replace the regulating valve 10 during production. The size of the shut-off valve D14 is the same as the pipe diameter of the branch pipe 3 where the regulating valve 10 is located. The shut-off valve C13 is used for steam purging.

[0049] The economical single-hole combustion chamber temperature control method includes: control under normal operating conditions, control under steam purging conditions, and control under maintenance conditions; the T-type plug valve 9 has three positions: 0°, 90°, and 180°. 0° and 180° are for maintenance conditions, and 90° is for working conditions, as shown in Figure 8; the T-type plug valve 9, stop valve A11, stop valve B12, stop valve C13, and stop valve D14 are used for switching between working circuit, standby circuit, purging, and maintenance conditions, as shown in Figures 2-6.

[0050] See Figure 2. Process operation flow with loop A in operation and loop B in standby mode:

[0051] During normal operation, adjust the T-type plug valve 9 to 90°. When regulating plug A1, orifice plate box A2, exchange plug A3, exchange plug B7, and regulating valve 10 are working, regulating plug B4 and orifice plate box B5 are in standby mode. At this time, regulating plug B5, stop valve B12, and stop valve D14 are closed, while regulating plug A1, stop valve A11, and stop valve C13 are open. When the exchanger drives the exchange plug A3 to open, the exchange plug B7 automatically closes. At this time, regulating plug A1, orifice plate box A2, and exchange plug A3 in the main heating gas circuit are connected, and regulating plug A1 in the branch heating gas circuit is connected. 1. When the shut-off valve A11, regulating valve 10, shut-off valve C13, T-type plug valve 9, and exchange plug A3 are in operation, the exchanger reverses direction after a period of time. When exchange plug A3 is closed, exchange plug B7 is opened. At this time, the regulating plug A1, orifice box A2, T-type plug valve 9, and exchange plug B7 in the main heating gas circuit are in operation, and the regulating plug A1, shut-off valve A11, regulating valve 10, shut-off valve C13, T-type plug valve 9, and exchange plug B7 in the branch heating gas circuit are in operation. At this time, orifice box A2 controls the large flow rate, and regulating valve 10 achieves stable regulation of the combustion chamber by controlling the small flow rate.

[0052] See Figure 3. The process flow is as follows: Loop B is operational, and Loop A is in standby mode:

[0053] During normal operation, adjust the T-type plug valve 9 to 90°. When the regulating plug B5, orifice plate box B6, exchange plug A3, exchange plug B7, and regulating valve 10 are working, the regulating plug A1 and orifice plate box A2 are in standby mode. At this time, the regulating plug A1, stop valve A11, and stop valve D14 are closed; the regulating plug B5, stop valve B12, and stop valve C13 are open. When the exchanger drives the exchange plug A3 to open, the exchange plug B automatically closes the exchange plug B7. At this time, the regulating plug B5, orifice plate box B6, T-type plug valve 9, and exchange plug A3 in the main heating gas circuit are connected, and the regulating plug B5, stop valve B12, regulating valve 10, stop valve C13, T-type plug valve 9, and exchange plug A3 in the branch heating gas circuit are connected. After a period of time, the exchanger reverses direction. When the exchange valve A3 is closed, the exchange valve B7 is opened. At this time, the regulating valve B5, orifice box B6, and exchange valve B7 in the main heating gas circuit are connected, and the regulating valve B5, shut-off valve B12, regulating valve 10, shut-off valve C13, T-type plug valve 9, and exchange valve B7 in the branch heating gas circuit are connected. At this time, orifice box B6 controls the large flow rate, and regulating valve 10 can still achieve stable regulation of the combustion chamber by controlling the small flow rate.

[0054] See Figure 4, process operation flow under loop A purging state:

[0055] When orifice plate box A2 and regulating valve 10 require steam purging, adjust T-type plug valve 9 to 0°, open regulating plug B5, and close shut-off valve B12. Heated gas enters the combustion chamber through regulating plug B5, orifice plate box B6, and exchange plug B7. When the hydraulic exchanger drives exchange plug A4 to close, open regulating plug A1, shut-off valves A11, B13, and D14. Purging steam purifies regulating valve 10 through shut-off valve D14, regulating valve 10, shut-off valve A11, and regulating plug A1. Shut-off valves D14, B13, orifice plate box A2, and regulating plug A1 purge the orifice plate. After purging is complete, close regulating plug B5, adjust T-type plug valve 9 to 90°, and orifice plate box A2 and regulating valve 10 return to normal operation.

[0056] See Figure 5, process operation flow under maintenance condition of loop B:

[0057] When orifice plate box B6 and regulating valve 10 need to be purged, adjust T-type plug valve 9 to 180°, close stop valve A11, open regulating plug A1, and heated gas enters the combustion chamber through regulating plug A1, orifice plate box A2, and exchange plug A4; when the hydraulic exchanger drives the exchange plug B7 to close, open regulating plug B5, stop valve B12, stop valve C13, and stop valve D14, and purging steam passes through stop valve D14, regulating valve 10, stop valve B12, and regulating plug B5 to purge regulating valve 10, stop valve D14, stop valve B13, T-type plug valve 9, orifice plate box B6, and regulating plug B5 to purge the orifice plate. After purging is completed, close regulating plug A1, adjust T-type plug valve 9 to 90°, and orifice plate box B6 and regulating valve 10 resume operation.

[0058] See Figure 6, Control Valve Overhaul Process Flow:

[0059] When regulating valve 10 needs to be replaced or disassembled for maintenance, adjust T-type plug valve 9 to 0° or 180°, open regulating plug A1 and regulating plug B5, and close shut-off valves A11, B12, C13, and D14. At this time, regulating plug A1, orifice box A2, and exchange plug A3 are alternately connected with regulating plug B5, orifice box B6, and exchange plug B7 as the hydraulic exchanger operates, which will not affect the normal heating of the coke oven.

[0060] Example 2:

[0061] In this embodiment, the economical single-orifice combustion chamber temperature control device and control method are the same as in Embodiment 1, except that a regulating valve is used to replace the orifice plate A2. The orifice plate box A2 can also be replaced by a regulating valve, which is a pneumatic regulating butterfly valve with a flow rate range of 150~500m³. 3 At this time, the pneumatic regulating butterfly valve, regulating cock A1, exchange cock A3, exchange cock B6, and regulating valve 10 constitute the normal operating circuit. The pneumatic regulating butterfly valve replaces orifice box A2 for large flow regulation, and regulating valve 10 is used for small flow precision regulation. Regulating cock B5 and orifice box B6 serve as backup circuits, which can be activated in case of failure of the pneumatic regulating butterfly valve and its corresponding working circuit. The operation method is shown in Figure 2. This approach reduces the labor intensity of manually replacing orifice box A2, while achieving precise regulation of combustion chamber temperature and coping with sudden and significant disturbances. The backup orifice box A2 can still function as a regulator in case of failure of regulating valve 10. However, the investment cost will increase, but even so, it is still lower than the investment cost of existing technologies.

[0062] The present invention includes a T-type stopcock valve on branch pipe one. The pipe connection between orifice plate box A and exchange stopcock A is connected to the first passage of the T-type stopcock valve, and the pipe connection between orifice plate box B and exchange stopcock B is connected to the second passage of the T-type stopcock valve. The third passage of the T-type stopcock valve is connected to branch pipe three, thus realizing the connection between two main heating gas pipes. A single regulating valve can be used to regulate the flow rate of two gas heating pipes in the same combustion chamber. By changing the opening position of the T-type stopcock valve, online maintenance and manual adjustment can be achieved. A stop valve D is provided between the regulating valve and the T-type stopcock valve. The regulating valve is connected to stop valve A and stop valve B respectively using a three-way connector, ensuring the regulation... When a valve malfunctions, it can be disassembled at any time without affecting normal production. One end of gate valves A and B is connected to the heating gas pipeline via the regulating cock, and the other end is connected to the regulating valve via a tee connector, enabling the switching between the working circuit and the standby circuit of the heating gas pipeline at any time. A gate valve C is installed between the regulating valve and gate valve D, which allows for online steam purging of the heating gas pipeline to prevent tar and naphthalene from clogging the heating gas pipeline and valves. A small-diameter regulating valve is used to connect heating gas pipeline one and heating gas pipeline two, which reduces the size of the regulating valve without affecting the regulating function, greatly reducing the number of regulating valves and lowering investment costs.

Claims

1. An economical single-hole combustion chamber temperature control device, characterized in that, It includes a heating gas unit 1, a heating gas unit 2, a regulating gas pipeline, and a regulating unit. The input end of each heating gas unit 1 and the input end of each heating gas unit 2 are connected to the main heating gas pipeline. The output end of each heating gas unit 1 and the output end of each heating gas unit 2 are connected to the corresponding combustion chamber. One end of the regulating unit is connected to the corresponding heating gas unit 1, and the other end of the regulating unit is connected to the corresponding heating gas unit 2.

2. The economical single-hole combustion chamber temperature control device according to claim 1, characterized in that, The regulating unit includes branch pipe one, branch pipe two, and branch pipe three. One end of branch pipe one and branch pipe two are respectively connected to the corresponding heating gas unit one, and the other end of branch pipe one and branch pipe two are respectively connected to the corresponding heating gas unit two. One end of branch pipe three is connected to branch pipe one, and the other end of branch pipe three is connected to branch pipe two.

3. The economical single-hole combustion chamber temperature control device according to claim 2, characterized in that, The first gas heating unit is provided with an adjusting valve A, an orifice plate box A, and an exchange valve A in sequence from bottom to top. The second gas heating unit is provided with an adjusting valve B, an orifice plate box B, and an exchange valve B in sequence from bottom to top. A T-type stopcock valve is provided on the first branch pipe. The pipe connection between the orifice plate box A and the exchange valve A is connected to the first passage of the T-type stopcock valve. The pipe connection between the orifice plate box B and the exchange valve B is connected to the second passage of the T-type stopcock valve. The third passage of the T-type stopcock valve is connected to one end of the third branch pipe.

4. The economical single-hole combustion chamber temperature control device according to claim 2, characterized in that, The branch pipe is provided with a regulating valve and a shut-off valve D from bottom to top. The pipe connection between the regulating valve and the shut-off valve D is connected to one end of the shut-off valve C, and the other end of the shut-off valve C is connected to the steam purging pipeline.

5. The economical single-hole combustion chamber temperature control device according to claim 2, characterized in that, The second branch pipe is equipped with a stop valve A, a stop valve B, and a tee connector. The other two ends of the tee connector are connected to the stop valve A and the stop valve B respectively, and the remaining end of the tee connector is connected to the other end of the third branch pipe.

6. An economical single-hole combustion chamber temperature control method for implementing the device according to any one of claims 1-5, characterized in that, Specifically, it includes: S1. Control under normal operating conditions; S2, Steam purging status control; S3, Maintenance Status Control.

7. The economical single-hole combustion chamber temperature control method according to claim 6, characterized in that, In S1, the control under normal operating conditions, with the T-type plug valve positioned at 90°, specifically includes: 1) When the regulating cock A, orifice plate box A, exchange cock A, exchange cock B, and regulating valve are working, the regulating cock B and orifice plate box B are in standby mode, and the regulating cock B, stop valve B, and stop valve D are closed; the regulating cock A, stop valve A11, and stop valve C are open, and the exchange cock A and exchange cock B are alternately opened and closed with the exchanger. 2) When the regulating cock B, orifice plate box B, exchange cock A, exchange cock B, and regulating valve are working, regulating cock A and orifice plate box A are in standby mode, and regulating cock A, stop valve A, and stop valve D are closed; regulating cock B, stop valve B, and stop valve C are open, and exchange cock A and exchange cock B are alternately opened and closed with the exchanger.

8. The economical single-hole combustion chamber temperature control method according to claim 6, characterized in that, In S2, the steam purging state control, with the T-type plug valve at 0°, specifically includes steam purging of the orifice plate box A and the regulating valve, including: Open the regulating valve B and close the shut-off valve B. The heated gas enters the combustion chamber through the regulating valve B, the orifice plate box B, and the exchange valve B. When the hydraulic exchanger closes the exchange valve A, it opens the regulating valve A, the shut-off valve A11, the shut-off valve B, and the shut-off valve D, allowing purge steam to enter from the shut-off valve D. After purging is completed, close the adjusting stopcock B, adjust the T-type stopcock valve to 90°, and restore the orifice plate box A and the adjusting valve to their working state.

9. The economical single-hole combustion chamber temperature control method according to claim 6, characterized in that, In S2, the steam purging state control, with the T-type plug valve at 180°, specifically includes steam purging of the orifice plate box B and the regulating valve, as follows: Close the shut-off valve A11 and open the regulating cock A. The heated gas enters the combustion chamber through the regulating cock A, orifice plate box A, and exchange cock A. When the hydraulic exchanger closes the exchange valve B, it opens the regulating valve B, the shut-off valve B, the shut-off valve C, and the shut-off valve D, and the purging steam enters from the shut-off valve D. After purging is completed, close the regulating stopcock A, the T-type stopcock valve is at 90°, and the orifice plate box B and regulating valve return to their working state.

10. The economical single-hole combustion chamber temperature control method according to claim 6, characterized in that, In S3, the maintenance status control means that when the T-type plug valve is at 0° or 180°, the shut-off valves A11, B, C, and D are closed during maintenance of the regulating valve.

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