A steam temperature regulating system

Abstract

The utility model provides a kind of steam temperature regulating system, belong to the field of steam supply of thermal power generating unit.The steam temperature regulating system includes: pressure matcher, temperature reducing device and monitoring device, the output of pressure matcher is connected the input of temperature reducing device by steam pipeline, monitoring device is located in steam pipeline;Pressure matcher is used to use high-quality steam from thermal power generating unit to inject low-quality steam of thermal power generating unit, and obtain mixed steam;Monitoring device is used to monitor the steam parameter of mixed steam in steam pipeline in real time, and obtain real-time steam parameter value;Temperature reducing device is used to reduce temperature according to real-time steam parameter value to mixed steam device, and the mixed steam after being reduced temperature is supplied to steam supply main pipe for steam supply.The system obtains the steam parameter value of mixed steam by monitoring module, and reduces temperature to mixed steam device according to real-time steam parameter value using temperature reducing device, accurately meets the steam supply demand of user and saves energy.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of steam supply of thermal power generating unit, in particular to a steam supply temperature adjusting system. BACKGROUND

[0002] With the diversification of power plant operation development, in addition to residential heating, a considerable number of power plants also provide high parameter industrial steam supply to the surrounding enterprises. The energy quality of various parameters of steam generated in the production process of thermal power generating unit has a big difference, and according to the actual needs of users, the quality and quantity of steam are reasonably distributed, which not only can improve the utilization rate of energy, but also can improve the economic benefit of enterprises. In industrial production, high pressure and high temperature steam (generally heat extraction and steam extraction) is often throttled and decompressed by valves to meet the needs of users. The throttling and decompression of the valve causes the invalid depreciation of energy, and the high quality steam is converted into low quality steam without doing work, which belongs to the waste of energy quality. Generally, the industrial steam supply unit supplies the industrial users with the reheat hot section extraction steam after temperature reduction and pressure reduction, and the serious mismatch between supply and demand causes huge work loss of high parameter steam. Obviously, this steam supply mode is extremely uneconomical.

[0003] Therefore, the pressure matching device technology (also called introduction and injection convergence technology) uses high quality steam (such as reheat steam) as driving steam source to inject low quality steam (such as four-stage extraction steam or exhaust steam), and the mixed steam of the two kinds of quality is supplied to the heat user. The technology is more practical as the standard coal consumption rate of the unit decreases with the increase of steam supply, that is, when the steam extraction amount is not large, the influence of the temperature reduction and pressure reduction device and the pressure matching device on the terminal difference and the difference is not much, but as the extraction amount gradually increases, the economic and energy-saving effect of the pressure matching device is more obvious.

[0004] However, in the prior art, the pressure matching device is added to improve the steam supply economy, but there is a deviation between the steam supply temperature after injection and the demand steam temperature, and the steam supply demand cannot be accurately realized. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical defects, the utility model provides a steam supply temperature adjusting system, the system obtains the steam parameter value of the mixed steam through the monitoring module, and the mixed steam device is temperature reduced according to the real-time steam parameter value by using the temperature reduction device. The mixed steam after temperature reduction is supplied to the steam supply mother pipe, which accurately meets the steam supply demand of the user and saves energy.

[0006] The utility model provides a steam supply temperature adjusting system in the first aspect, which comprises: a pressure matching device, a temperature reduction device and a monitoring device, the output end of the pressure matching device is connected with the input end of the temperature reduction device through a steam pipeline, and the monitoring device is arranged in the steam pipeline.

[0007] The pressure matcher is used for using high-quality steam from the thermal power generating unit to entrain low-quality steam of the thermal power generating unit, obtaining mixed steam, and outputting the mixed steam to the desuperheating device through the steam pipeline;

[0008] The monitoring device is used for monitoring the steam parameters of the mixed steam in the steam pipeline in real time, obtaining real-time steam parameter values;

[0009] The desuperheating device is used for desuperheating the mixed steam according to the real-time steam parameter values obtained by the monitoring device;

[0010] The desuperheating device is connected with a steam supply main pipe, and the desuperheated mixed steam is transported through the steam supply main pipe.

[0011] In the embodiment of the utility model, the desuperheating device includes: bypass pipeline and desuperheating pipeline, the output end of pressure matcher is connected with bypass pipeline and desuperheating pipeline respectively, and the desuperheating module is arranged in the desuperheating pipeline;

[0012] When the real-time steam parameter values obtained by the monitoring device are greater than the first preset value, the pressure matcher is communicated with the desuperheating pipeline, the desuperheating module desuperheats the mixed steam, and the desuperheated mixed steam is used for supplying steam to the user;

[0013] When the real-time steam parameter values obtained by the monitoring device are equal to the first preset value, the pressure matcher is communicated with the bypass pipeline, and the mixed steam is supplied to the user.

[0014] In the embodiment of the utility model, the pressure matcher includes: pressure matcher body;

[0015] The pressure matcher body includes: entrained steam source end, driving steam source end and mixed steam output end;

[0016] The entrained steam source end is used for receiving low-quality steam from the thermal power generating unit;

[0017] The driving steam source end is used for receiving high-quality steam from the thermal power generating unit;

[0018] The mixed steam output end is used for outputting the mixed steam.

[0019] In the embodiment of the utility model, the pressure matcher further includes: first control module;

[0020] The entrained steam source end is provided with a first adjusting valve, the driving steam source end is provided with a second adjusting valve, and the first control module is used for adjusting the opening degrees of the first adjusting valve and the second adjusting valve.

[0021] In the embodiment of the utility model, the temperature reducing device comprises: a second control module, which is used for controlling the opening and closing of the bypass pipeline or the temperature reducing pipeline.

[0022] In the embodiment of the utility model, the temperature reducing module comprises: a temperature reducing water pipeline, a temperature reducer and a temperature reducing water valve.

[0023] The input end of the temperature reducing water pipeline inputs temperature reducing water, the output end of the temperature reducing water pipeline is connected with the temperature reducing pipeline, and the temperature reducing water pipeline is used for conveying temperature reducing water to the temperature reducing pipeline.

[0024] The temperature reducer reduces the temperature of the mixed steam in the temperature reducing pipeline by using temperature reducing water.

[0025] The temperature reducing water valve is arranged on the temperature reducing water pipeline.

[0026] In the embodiment of the utility model, the second control module is also used for adjusting the opening degree of the temperature reducing water valve.

[0027] In the embodiment of the utility model, the ejector steam source end is connected with four-stage steam extraction pipelines of the thermal power generating unit, and the driving steam source end is connected with heat re-extraction pipelines of the thermal power generating unit.

[0028] In the embodiment of the utility model, the ejector steam pipeline is connected between the ejector steam source end and the four-stage steam extraction pipelines, the first regulating valve is arranged in the ejector steam pipeline, a first stop valve, a check valve and a second stop valve are also arranged in the ejector steam pipeline, and the first stop valve, the check valve, the first regulating valve and the second stop valve are sequentially connected.

[0029] In the embodiment of the utility model, the first preset value is a steam supply parameter value required by a user.

[0030] The utility model obtains the steam parameter value of the mixed steam through the monitoring module, reduces the temperature of the mixed steam according to the real-time steam parameter value by using the temperature reducing device, and supplies the mixed steam after temperature reduction to the steam supply main pipe, thereby accurately meeting the steam supply demand of the user and saving energy.

[0031] Other features and advantages of the technical scheme of the utility model will be described in detail in the specific implementation part below. BRIEF DESCRIPTION OF DRAWINGS

[0032] The drawings described herein are used to provide further understanding of the utility model, and form a part of the utility model, the illustrative embodiment of the utility model and its description are used to explain the utility model, and do not constitute improper limitation to the utility model.

[0033] Figure 1is a structural block diagram of a steam temperature adjusting system provided by the embodiment of the utility model;

[0034] Figure 2 is a structural schematic diagram of a steam temperature adjusting system provided by the embodiment of the utility model;

[0035] Figure 3 is a flow chart of a steam temperature adjusting method provided by the embodiment of the utility model.

[0036] Explanation of reference signs

[0037] 01-pressure matching device, 02-bypass pipeline, 03-temperature reducing pipeline, 04-monitoring device, 05-temperature reducing water pipeline, 06-temperature reducer, 07-injected steam source end, 08-driving steam source end, 09-steam pipeline, 10-first stop valve, 11-check valve, 12-first regulating valve, 13-second stop valve. CONCRETE IMPLEMENTATION

[0038] In order to make the technical scheme and advantages in the embodiments of the utility model clearer and more apparent, the exemplary embodiments of the utility model are further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than an exhaustive enumeration of all embodiments. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0039] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0040] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0041] In the utility model, unless otherwise expressly provided and limited, the terms such as ''installation'', ''connection'', ''connection'', ''fixing'' and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or can communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication or interaction relationship between two elements. For ordinary skilled persons in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0042] In the process of realizing the utility model, the inventors found that with the diversification of power plant operation and development, in addition to residential heating, a considerable number of power plants also provide high-parameter industrial steam supply to surrounding enterprises. The energy quality of various parameters of steam generated in the production process of thermal power generating units has a big difference, and according to the actual needs of users, the quality and quantity of steam are reasonably distributed, which not only can improve the utilization rate of energy, but also can improve the economic benefit of enterprises. In industrial production, high-pressure high-temperature steam (generally heat extraction and steam extraction) is often throttled and decompressed by valves to meet the needs of users. Throttling and decompression of valves cause invalid devaluation of energy, and high-quality steam is converted into low-quality steam without external work, which belongs to waste of energy quality. Generally, industrial steam units supply industrial users with reheat hot section extraction steam after decompression and temperature reduction, and the serious mismatch between supply and demand causes huge work loss of high-parameter steam. Obviously, this steam supply method is extremely uneconomical.

[0043] Therefore, the pressure matching device technology (also called introduction and injection convergence technology) uses high-quality steam (such as reheat steam) as a driving steam source to inject low-quality steam (such as four-stage extraction steam or exhaust steam), and the two kinds of steam are mixed to form a kind of intermediate-quality steam to supply heat users. The technology is more practical with the trend of reducing the standard coal consumption rate of the unit with the increase of steam supply, that is, when the steam extraction amount is not large, the influence of adding a temperature and pressure reducer and adding a pressure matching device on the terminal difference and difference is not much different, but with the gradual increase of the extraction amount, the economic and energy-saving effect of adding the pressure matching device is more obvious.

[0044] However, in the prior art, the pressure matching device is added to improve the steam supply economy, but there is a deviation between the injection steam temperature and the demand steam temperature, and the steam supply demand cannot be accurately realized.

[0045] To solve the above problems, the utility model embodiment provides a kind of steam temperature regulating system, comprising: pressure matcher, temperature reducing device and monitoring device, the output of the pressure matcher is connected with the input of the temperature reducing device by steam pipeline, and the monitoring device is arranged in the steam pipeline;The pressure matcher is used to use the high-quality steam from thermal power generating unit to inject the low-quality steam of thermal power generating unit, obtains mixed steam, and the mixed steam is output to the temperature reducing device by the steam pipeline;The monitoring device is used to monitor the steam parameter of mixed steam in the steam pipeline in real time, and obtains real-time steam parameter value;The temperature reducing device is used to reduce the temperature of mixed steam device according to real-time steam parameter value, and the mixed steam after being reduced in temperature is used to supply steam by steam main pipe.The system obtains the steam parameter value of mixed steam by monitoring module, and the mixed steam device is reduced in temperature according to real-time steam parameter value using temperature reducing device, and the mixed steam after being reduced in temperature is used to supply steam by steam main pipe, accurately meets the steam demand of user and saves energy.

[0046] Figure 1 It is the structure diagram of the steam temperature regulating system provided by the utility model embodiment, Figure 2 It is the structure diagram of the steam temperature regulating system provided by the utility model embodiment. Figures 1-2 As shown in the utility model embodiment, a kind of steam temperature regulating system provided by the utility model embodiment, comprising: pressure matcher 01, temperature reducing device and monitoring device 04, the output of the pressure matcher 01 is connected with the input of the temperature reducing device by steam pipeline 09, and the monitoring device 04 is arranged in the steam pipeline 09;

[0047] The pressure matcher 01 is used to use the high-quality steam from thermal power generating unit to inject the low-quality steam of thermal power generating unit, obtains mixed steam, and the mixed steam is output to the temperature reducing device;

[0048] The monitoring device 04 is used to monitor the steam parameter of mixed steam in real time, and obtains real-time steam parameter value;

[0049] The temperature reducing device includes bypass pipeline 02 and temperature reducing pipeline 03, the output of the pressure matcher 01 is communicated with the bypass pipeline 02 or the temperature reducing pipeline 03, and temperature reducing module is arranged in the temperature reducing pipeline 03;

[0050] When real-time steam parameter value is greater than first preset value, the pressure matcher 01 is communicated with the temperature reducing pipeline 03, and the temperature reducing module reduces the temperature of mixed steam, and the mixed steam after being reduced in temperature is used to supply steam to user;

[0051] When real-time steam parameter value is equal to first preset value, the pressure matcher 01 is communicated with the bypass pipeline 02, and the mixed steam in bypass pipeline 02 is used to supply steam to user.

[0052] In the embodiment, the pressure matcher 01 uses high-quality steam to inject low-quality steam, mixes to form mixed steam, the mixed steam is intermediate quality, and the pressure matcher 01 is used to form the steam of intermediate quality to provide steam for users, and as the steam supply increases, the trend of reducing the standard coal consumption rate of the unit is more practical, and energy saving and consumption reduction can be achieved.

[0053] The temperature of the mixed steam generated by the pressure matcher 01 is reduced by using the temperature reducing device, so that the steam temperature is adjusted; and the mixed steam is monitored by using the monitoring device 04, and the temperature reduction amount of the mixed steam is further adjusted according to the steam parameter value of the mixed steam obtained by monitoring, so that the users are provided with more accurate steam, and energy waste is further avoided.

[0054] In the embodiment, the real-time steam parameter value of the mixed steam is obtained by the monitoring module, and it is judged whether the obtained mixed steam needs to be reduced in temperature according to the real-time steam parameter value, so that the steam parameter required by the user is obtained, and the purpose of energy saving is achieved.

[0055] By setting the first preset value, the mixed steam generated by the pressure matcher 01 can be branched, the mixed steam with the real-time steam parameter value greater than the first preset value is reduced in temperature and then supplied to the user, so that the deviation between the generated mixed steam and the steam parameter required by the user is avoided; and the mixed steam with the real-time steam parameter value equal to the first preset value is directly supplied to the user through the bypass pipeline 02, so that the steam supply demand is accurately met.

[0056] In the embodiment, the first preset value is the steam parameter value required by the user.

[0057] In the embodiment, the real-time steam parameter value is the temperature of the mixed steam.

[0058] In the embodiment, the pressure matcher 01 comprises a pressure matcher body.

[0059] The pressure matcher body comprises an injected steam source end 07, a driving steam source end 08 and a mixed steam output end.

[0060] The injected steam source end 07 is used for receiving low-quality steam from a thermal power generating unit.

[0061] The driving steam source end 08 is used for receiving high-quality steam from the thermal power generating unit.

[0062] The mixed steam output end is used for outputting the mixed steam.

[0063] In the embodiment of the utility model, the pressure matcher 01 further comprises a first control module.

[0064] The first control module is used for determining the flow values of the low-quality steam and the high-quality steam entering the pressure matcher 01 in real time according to the required steam parameter value of the user, the real-time parameter value of the low-quality steam and the real-time parameter value of the high-quality steam, so that the real-time steam parameter value of the mixed steam is always greater than the second preset value.

[0065] In the embodiment, the injection steam source end 07 is provided with a first adjusting valve 12, the driving steam source end 08 is provided with a second adjusting valve, and the first control module is used for adjusting the opening degrees of the first adjusting valve 12 and the second adjusting valve. The first control module adjusts the flow values of the low-quality steam and the high-quality steam entering the pressure matcher 01 by adjusting the opening degrees of the first adjusting valve 12 and the second adjusting valve.

[0066] In the embodiment, the second preset value is higher than the required steam parameter value of the user, so as to avoid that the temperature loss of the mixed steam flowing in the steam supply pipeline causes the mixed steam provided for the steam user to not meet the requirement of the user.

[0067] In the embodiment, the second preset value is greater than a first preset value, and the first preset value is the required steam parameter value of the user.

[0068] In the embodiment of the utility model, the temperature reducing device includes: a second control module, the second control module is used for controlling the opening and closing of the bypass pipeline 02 or the temperature reducing pipeline 03.

[0069] Further, the bypass pipeline 02 and the temperature reducing pipeline 03 are provided with a shut-off valve.

[0070] In the embodiment of the utility model, the temperature reducing module includes: a temperature reducing water pipeline 05, a temperature reducer 06 and a temperature reducing water valve.

[0071] The input end of the temperature reducing water pipeline 05 inputs temperature reducing water, the output end of the temperature reducing water pipeline 05 is connected with the temperature reducing pipeline 03, and the temperature reducing water pipeline 05 is used for conveying temperature reducing water to the temperature reducing pipeline 03.

[0072] The temperature reducer 06 reduces the temperature of the mixed steam in the temperature reducing pipeline 03 by using temperature reducing water.

[0073] The temperature reducing water valve is arranged on the temperature reducing water pipeline 05.

[0074] In the embodiment, the second control module is used for adjusting the opening degree of the temperature reducing water valve according to the real-time steam parameter value of the mixed steam entering the temperature reducing pipeline 03, and then adjusting the flow of the temperature reducing water entering the temperature reducing pipeline 03.

[0075] In the embodiment, the ejecting steam source end 07 is connected with four-stage extraction pipelines of the thermal power generating unit, and the driving steam source end 08 is connected with a hot re-extraction pipeline of the thermal power generating unit.

[0076] In the embodiment, the ejecting steam source end is connected with the four-stage extraction pipelines through an ejecting steam pipeline, the first regulating valve 12 is arranged in the ejecting steam pipeline, the first stop valve 10, the check valve 11, the second stop valve 13 and the first regulating valve 12 are sequentially connected.

[0077] In other embodiments of the utility model, the ejecting steam source end 07 is connected with a communication pipe of a middle-low pressure cylinder, and the driving steam source end 08 is connected with a main steam pipeline 09.

[0078] The pressure matching device 01 provided by the utility model has poor temperature adaptability under variable working conditions, and only needs to pass mixed steam at the outlet of the pressure matching device 01 into a steam temperature reducing nozzle to complete a temperature reducing process, without needing to switch steam source points, thereby avoiding the problems of poor temperature adaptability of the pressure matching device 01 under variable working conditions and having to frequently switch steam sources, and improving steam supply reliability.

[0079] Figure 3 It is a flow chart of the steam temperature adjusting method provided by the embodiment of the utility model. Figure 3 As shown in the figure, the embodiment provides a steam temperature adjusting method, which comprises the following steps:

[0080] S1. obtaining mixed steam by using high-quality steam from the thermal power generating unit to eject low-quality steam of the thermal power generating unit through the pressure matching device 01;

[0081] S2. obtaining real-time steam parameter values by monitoring steam parameters of the mixed steam in real time through the monitoring device 04;

[0082] S3. when the real-time steam parameter values are greater than first preset values, communicating the pressure matching device 01 through the temperature reducing pipeline 03 of the temperature reducing device, and reducing the temperature of the mixed steam through the temperature reducing module in the temperature reducing pipeline 03, and using the mixed steam after the temperature reduction to supply steam to users;

[0083] S4. when the real-time steam parameter values are equal to the first preset values, communicating the pressure matching device 01 through the bypass pipeline 02 of the temperature reducing device, and supplying steam to users through the mixed steam in the bypass pipeline 02.

[0084] In the embodiment, the method further comprises:

[0085] The first control module determines the flow value of the low-quality steam and the flow value of the high-quality steam entering the pressure matcher 01 in real time according to the required steam parameter value of the user, the real-time parameter value of the low-quality steam and the real-time parameter value of the high-quality steam, so that the real-time steam parameter value of the mixed steam is always greater than the second preset value.

[0086] In the embodiment, the method further comprises:

[0087] The second control module determines the adjustment value of the desuperheating module according to the real-time steam parameter value of the mixed steam entering the desuperheating pipeline 03, and generates an adjustment instruction signal;

[0088] The desuperheating module receives the adjustment instruction signal and executes the adjustment instruction signal to desuperheat the mixed steam in the desuperheating pipeline 03.

[0089] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all changes and modifications falling within the scope of the present application.

[0090] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

[0091] The optional embodiments of the present application are described in detail above in combination with the drawings, but the embodiments of the present application are not limited to the specific details in the above-described embodiments. Within the technical concept range of the embodiments of the present application, the technical solutions of the embodiments of the present application can be variously modified, and these simple modifications all belong to the protection range of the embodiments of the present application. In addition, it should be noted that the various specific technical features described in the above-described specific embodiments can be combined in any appropriate manner without contradiction, as long as the combination does not deviate from the idea of the embodiments of the present application, and it should be considered as the disclosed content of the embodiments of the present application.

Claims

1. A steam temperature regulating system characterized by, The application relates to a pressure matching device, a temperature reducing device and a monitoring device, wherein the output end of the pressure matching device is connected with the input end of the temperature reducing device through a steam pipeline, and the monitoring device is arranged in the steam pipeline. The pressure matching device is used for using high-quality steam from a thermal power generating unit to inject low-quality steam from the thermal power generating unit, so as to obtain mixed steam, and the mixed steam is output to the temperature reducing device through the steam pipeline. The monitoring device is used for monitoring the steam parameters of the mixed steam in the steam pipeline in real time, so as to obtain real-time steam parameter values. The temperature reducing device is used for reducing the temperature of the mixed steam according to the real-time steam parameter values monitored by the monitoring device. The temperature reducing device is connected with a steam supply main pipeline, and the mixed steam after temperature reduction is transported through the steam supply main pipeline. The temperature reducing device comprises a bypass pipeline and a temperature reducing pipeline, the output end of the pressure matching device is connected with the bypass pipeline and the temperature reducing pipeline respectively, and a temperature reducing module is arranged in the temperature reducing pipeline.

2. The fired temperature regulating system of claim 1, wherein, When the real-time steam parameter values monitored by the monitoring device are greater than a first preset value, the pressure matching device is communicated with the temperature reducing pipeline, the temperature reducing module reduces the temperature of the mixed steam, and the mixed steam after temperature reduction is used for supplying steam to a user. When the real-time steam parameter values monitored by the monitoring device are equal to the first preset value, the pressure matching device is communicated with the bypass pipeline, and the mixed steam is used for supplying steam to the user. The pressure matching device comprises a pressure matching device body.

3. The fired temperature regulating system of claim 2, wherein, The pressure matching device body comprises a steam source end to be injected, a steam source end to be driven and a mixed steam output end. The steam source end to be injected is used for receiving low-quality steam from the thermal power generating unit. The steam source end to be driven is used for receiving high-quality steam from the thermal power generating unit. The mixed steam output end is used for outputting the mixed steam. The pressure matching device further comprises a first control module.

4. The fired temperature regulating system of claim 3, wherein, The steam source end to be injected is provided with a first adjusting valve, the steam source end to be driven is provided with a second adjusting valve, and the first control module is used for adjusting the opening degrees of the first adjusting valve and the second adjusting valve. The temperature reducing device comprises a second control module, which is used for controlling the opening and closing of the bypass pipeline or the temperature reducing pipeline.

5. The fired temperature regulating system of claim 4, wherein, The temperature reducing module comprises a temperature reducing water pipeline, a temperature reducer and a temperature reducing water valve.

6. The fired temperature regulating system of claim 5, wherein, The input end of the temperature reducing water pipeline inputs temperature reducing water, the output end of the temperature reducing water pipeline is connected with the temperature reducing pipeline, and the temperature reducing water pipeline is used for transporting temperature reducing water to the temperature reducing pipeline. The temperature reducer reduces the temperature of the mixed steam in the temperature reducing pipeline by using the temperature reducing water. The temperature reducing water valve is arranged on the temperature reducing water pipeline. The second control module is further used for adjusting the opening degree of the temperature reducing water valve.

7. The fired temperature regulating system of claim 6, wherein, The steam source end to be injected is connected with four-stage steam extraction pipelines of the thermal power generating unit, and the steam source end to be driven is connected with hot re-extraction pipelines of the thermal power generating unit.

8. The fired-turbine temperature regulating system according to claim 4, wherein ​ 9. The fired temperature regulating system of claim 8, wherein, The ejecting steam pipeline is connected between the ejecting steam source end and the four-stage steam extraction pipeline, the first regulating valve is arranged in the ejecting steam pipeline, the first stop valve, the check valve and the second stop valve are also arranged in the ejecting steam pipeline, and the first stop valve, the check valve, the first regulating valve and the second stop valve are sequentially connected.

10. The fired temperature regulating system of claim 2, wherein, The first preset value is a steam supply parameter value required by a user.

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