Thermal power plant peak shaving device utilizing electrode boiler for heating and heat supply pipe network for heat storage

Abstract

The utility model relates to a thermal power plant peak shaving device utilizing an electrode boiler for heating and a heat supply pipe network for heat storage. Comprising a steam turbine, a generator, an electrode boiler, a primary heat supply network heater, a primary heat supply network circulating pump, a primary heat supply network heater water inlet valve, a primary heat supply network heater water return valve, a primary heat supply network heater bypass valve, an electrode boiler water inlet valve, an electrode boiler water return valve, an electrode boiler bypass valve, a primary heat supply network circulating water supply thermometer and a pressure gauge. The system comprises a primary heat supply network circulating water pressure regulating valve, a primary heat supply network circulating water buffer tank, a primary heat supply network circulating water make-up pump, a secondary heat supply network heater, a secondary heat supply network heater heat source side water inlet valve, a secondary heat supply network heater heat source side water return valve, a secondary heat supply network heater heat source side bypass valve, a heat consumer, a condensed water heater and a condensed water heater heat source side water inlet valve. And a condensation water heater heat source side water return valve, a condensation water heater heat source side bypass valve and a primary heat supply network circulating water pipeline. The peak regulation capacity of the thermal power plant can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of peak regulation of heating units, and in particular to a peak regulation device for a thermal power plant utilizing electrode boilers for heating and heating pipe networks for heat storage. Background Art

[0002] Energy is the foundation for human survival and development. With the development of society and economy, the demand for energy is increasing, and the development and rational use of energy are attracting more and more attention. With the adjustment of my country's economic policies, the electricity consumption structure has changed greatly. The electricity consumption of light industry and municipal life has continued to rise, and the proportion of nighttime electricity consumption in heavy industry has gradually decreased. The peak-to-valley difference of the day and night load of the large power grid has increased from the original 20% to 30%-50%, and will continue to rise. The peak-to-valley difference in developed countries has reached 50%-70%. The existing energy structure has also undergone significant changes. The proportion of renewable energy such as wind power and solar energy has continued to increase, and the proportion of fossil energy has continued to decrease. Due to the nature of renewable energy, the responsibility of maintaining the stability of the large power grid falls on coal-fired power plants, which puts higher requirements on the frequency regulation and peak regulation capabilities of coal-fired power plants.

[0003] However, at this stage, the power grid's peak-shaving capacity is insufficient, and peak-shaving difficulties have become the most prominent problem in power grid operation. Utility Model Content

[0004] The utility model aims to improve the peak-shaving capacity of the heating unit, and provides a thermal power plant peak-shaving device that utilizes electrode boiler heating and heating pipe network heat storage, utilizes the primary heating network circulating water pipe network (heating pipe network) of the thermal power plant, cooperates with electrode boiler and condensate water heater, can consume and store the excess steam extraction and power generation of the unit when the power consumption of the power grid is low, and releases the stored heat to the heating users and the condensate of the unit itself when the power consumption of the power grid is peak, thereby improving the peak-shaving capacity of the thermal power plant.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] A peak-shaving device for a thermal power plant using an electrode boiler for heating and a heating pipe network for heat storage, comprising a steam turbine, a generator, an electrode boiler, a primary heating network heater, a primary heating network circulating pump, a primary heating network circulating water buffer tank, a secondary heating network heater, a condensate water heater and a primary heating network circulating water pipeline;

[0007] The steam turbine is connected to the primary heating network heater, and the steam turbine is connected to the electrode boiler through the generator; the primary heating network circulation pump is arranged on the primary heating network circulating water pipeline; a primary heating network heater water inlet valve and a primary heating network heater water return valve are respectively arranged between the primary heating network heater and the primary heating network circulating water pipeline, and a primary heating network heater bypass valve is arranged between the primary heating network heater water inlet valve and the primary heating network heater water return valve on the primary heating network circulating water pipeline; an electrode boiler water inlet valve and an electrode boiler water return valve are respectively arranged between the electrode boiler and the primary heating network circulating water pipeline, and an electrode boiler bypass valve is arranged between the electrode boiler water inlet valve and the electrode boiler water return valve on the primary heating network circulating water pipeline; a primary heating network circulating water buffer water tank is respectively arranged between the primary heating network circulating water pipeline and the primary heating network circulating water pipeline A primary heating network circulating water pressure regulating valve and a primary heating network circulating water make-up pump; a secondary heating network heater heat source side water inlet valve and a secondary heating network heater heat source side water return valve are respectively provided between the secondary heating network heater and the primary heating network circulating water pipeline, a secondary heating network heater heat source side bypass valve is provided between the secondary heating network heater heat source side water inlet valve and the secondary heating network heater heat source side water return valve on the primary heating network circulating water pipeline, and the secondary heating network heater is connected to a heat user; a condensate water heater heat source side water inlet valve and a condensate water heater heat source side water return valve are respectively provided between the condensate water heater and the primary heating network circulating water pipeline, a condensate water heater heat source side bypass valve is provided between the condensate water heater heat source side water inlet valve and the condensate water heater heat source side water return valve on the primary heating network circulating water pipeline.

[0008] A primary heating network circulating water supply thermometer and a primary heating network circulating water pressure gauge are provided on the primary heating network circulating water pipeline between the electrode boiler and the circulating water buffer tank.

[0009] A primary heating network heater front circulating water thermometer is provided on the primary heating network circulating water pipeline at the front end of the primary heating network heater water inlet valve of the primary heating network heater.

[0010] A primary heating network heater rear circulating water thermometer is provided on the primary heating network circulating water pipeline at the rear end of the primary heating network heater return valve of the primary heating network heater.

[0011] The beneficial effects of the utility model are as follows: the utility model utilizes the primary heat network circulating water pipeline of the thermal power plant to supply heat to the pipe network, cooperates with the electrode boiler and the condensate heater, can store the excess steam extraction and power generation of the unit when the power grid is in a low power consumption period, and releases the stored heat to the heating users and the condensate of the unit itself when the power grid is in a peak power consumption period, thereby improving the peak load regulation capacity of the thermal power plant. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] In the figure: 1-steam turbine; 2-generator; 3-electrode boiler; 4-primary heating network heater; 5-primary heating network circulating pump; 6-primary heating network heater inlet valve; 7-primary heating network heater return valve; 8-primary heating network heater bypass valve; 9-electrode boiler inlet valve; 10-electrode boiler return valve; 11-electrode boiler bypass valve; 12-primary heating network circulating water supply thermometer; 13-primary heating network circulating water pressure gauge; 14-primary heating network circulating water pressure regulating valve; 15-primary heating network circulating water buffer water tank; 16-primary heating network circulating Water replenishment pump; 17-secondary heating network heater; 18-secondary heating network heater heat source side inlet valve; 19-secondary heating network heater heat source side return valve; 20-secondary heating network heater heat source side bypass valve; 21-heat user; 22-condensate heater; 23-condensate heater heat source side inlet valve; 24-condensate heater heat source side return valve; 25-condensate heater heat source side bypass valve; 26-primary heating network heater front circulating water thermometer; 27-primary heating network heater rear circulating water thermometer; 28-primary heating network circulating water pipeline;

[0014] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0015] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0016] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] A peak load regulation device for a thermal power plant using an electrode boiler for heating and a heating network for heat storage, such as Figure 1 As shown, it includes a steam turbine 1, a generator 2, an electrode boiler 3, a primary heat network heater 4, a primary heat network circulating pump 5, a primary heat network circulating water buffer tank 15, a secondary heat network heater 17, a condensate heater 22 and a primary heat network circulating water pipeline 28;

[0020] The steam turbine 1 is connected to the primary heating network heater 4, and the steam turbine 1 is connected to the electrode boiler 3 through the generator 2; the primary heating network circulation pump 5 is arranged on the primary heating network circulating water pipeline 28; a primary heating network heater water inlet valve 6 and a primary heating network heater water return valve 7 are respectively arranged between the primary heating network heater 4 and the primary heating network circulating water pipeline 28, and a primary heating network heater bypass valve 8 is arranged between the primary heating network heater water inlet valve 6 and the primary heating network heater water return valve 7 on the primary heating network circulating water pipeline 28; an electrode boiler water inlet valve 9 and an electrode boiler water return valve 10 are respectively arranged between the electrode boiler 3 and the primary heating network circulating water pipeline 28, and an electrode boiler bypass valve 11 is arranged between the electrode boiler water inlet valve 9 and the electrode boiler water return valve 10 on the primary heating network circulating water pipeline 28; a primary heating network circulating water buffer water tank 15 is respectively arranged between the primary heating network circulating water pipeline 28 A heat network circulating water pressure regulating valve 14 and a primary heat network circulating water make-up pump 16; a secondary heat network heater heat source side water inlet valve 18 and a secondary heat network heater heat source side water return valve 19 are respectively provided between the secondary heat network heater 17 and the primary heat network circulating water pipeline 28, a secondary heat network heater heat source side bypass valve 20 is provided between the secondary heat network heater heat source side water inlet valve 18 and the secondary heat network heater heat source side water return valve 19 on the primary heat network circulating water pipeline 28, and a heat user 21 is connected to the secondary heat network heater 17; a condensate water heater heat source side water inlet valve 23 and a condensate water heater heat source side water return valve 24 are respectively provided between the condensate water heater 22 and the primary heat network circulating water pipeline 28, and a condensate water heater heat source side bypass valve 25 is provided between the condensate water heater heat source side water inlet valve 23 and the condensate water heater heat source side water return valve 24 on the primary heat network circulating water pipeline 28.

[0021] A primary heating network circulating water supply thermometer 12 and a primary heating network circulating water pressure gauge 13 are provided on the primary heating network circulating water pipeline 28 between the electrode boiler 3 and the circulating water buffer tank 15 .

[0022] A primary heating network heater front circulating water thermometer 26 is provided on the primary heating network circulating water pipeline 28 at the front end of the primary heating network heater water inlet valve 6 of the primary heating network heater 4 .

[0023] A primary heating network heater rear circulating water thermometer 27 is provided on the primary heating network circulating water pipeline 28 at the rear end of the primary heating network heater return valve 7 of the primary heating network heater 4 .

[0024] The steam extraction from the steam turbine 1 is supplied to the primary heating network heater 4 for heating the primary heating network circulating water. The steam extraction amount can be adjusted according to the heating load requirements and the heat storage capacity of the heating network, as well as the temperature values ​​displayed by the circulating water thermometer 26 before the primary heating network heater and the circulating water thermometer 27 after the primary heating network heater. The primary heating network circulating water has a primary heating network heater inlet valve 6 before entering the primary heating network heater 4 and a primary heating network heater return valve 7 after flowing out of the primary heating network heater 4. The primary heating network circulating water may not flow through the primary heating network heater 4, but may directly circulate by opening the primary heating network heater bypass valve 8 after closing the primary heating network heater inlet valve 6 and the primary heating network heater return valve 7. Similarly, the primary heating network circulating water is also equipped with corresponding electrode boiler inlet valve 9, electrode boiler return valve 10, and electrode boiler bypass valve 11 when entering and leaving the electrode boiler 3.

[0025] The primary heating network circulating water is continuously circulated in the primary heating network circulating water pipeline 28 through the primary heating network circulating pump 5 .

[0026] The steam turbine 1 drives the generator 2 to generate electricity. When the power grid is in a low power consumption period, the unit can supply the excess power generated to the electrode boiler 3 to convert it into heat to further heat the circulating water of the primary heat network. The load of the electrode boiler 3 can be adjusted according to the heating load requirements and the heat storage capacity of the heating pipe network, as well as the temperature value displayed by the primary heat network circulating water supply thermometer 12.

[0027] In order to maintain the stability of the primary heat network circulating water pressure, a primary heat network circulating water pressure gauge 13 is provided on the primary heat network circulating water pipeline 28. According to the pressure value displayed by the primary heat network circulating water pressure gauge 13, when the primary heat network circulating water pressure is high, the opening of the primary heat network circulating water pressure regulating valve 14 can be adjusted to discharge the primary heat network circulating water into the primary heat network circulating water buffer tank 15 for pressure regulation; when the primary heat network circulating water pressure is low, the primary heat network circulating water make-up pump 16 can be opened to make up the water in the primary heat network circulating water buffer tank 15 into the primary heat network circulating water pipeline 28.

[0028] The primary heat network circulating water heated by the primary heat network heater 4 and the electrode boiler 3 flows through the secondary heat network heater 17, transfers the heat to the secondary heat network circulating water, and brings the heat to the heat user 21 through the secondary heat network circulating water. The primary heat network circulating water is also equipped with a secondary heat network heater heat source side water inlet valve 18, a secondary heat network heater heat source side water return valve 19 and a secondary heat network heater heat source side bypass valve 20 on the pipeline flowing through the secondary heat network heater 17, which can determine whether the primary heat network circulating water enters the secondary heat network heater 17 according to the working condition requirements.

[0029] The primary heat network circulating water can also supply heat to the condensate heater 22 to heat the condensate. The primary heat network circulating water is also equipped with a condensate heater heat source side water inlet valve 23, a condensate heater heat source side water return valve 24 and a condensate heater heat source side bypass valve 25 on the pipeline flowing through the condensate heater 22, which can determine whether the primary heat network circulating water enters the condensate heater 22 according to the working conditions.

[0030] After releasing heat, the primary heating network circulating water returns to the primary heating network heater 4 and the electrode boiler 3 to absorb heat and then undergoes the next cycle. Specific embodiment:

[0032] Heat storage process of the heating network: When the power consumption of the power grid is low, the steam turbine 1 can supply the excess extraction steam to the primary heating network heater 4 to heat the primary heating network circulating water. The primary heating network circulating pump 5 is in the starting state, the primary heating network heater water inlet valve 6 and the primary heating network heater return valve 7 are in the open state, the primary heating network heater bypass valve 8 is in the closed state, and the primary heating network circulating water enters the primary heating network heater 4 to absorb heat and rise from temperature T1 to temperature T2.

[0033] In the same heat storage process of the heating network as above, the steam turbine 1 drives the generator 2 to generate electricity, and the unit supplies the excess power generation to the electrode boiler 3 to convert it into heat, and further heats the primary heating network circulating water. The electrode boiler water inlet valve 9 and the electrode boiler water return valve 10 are in the open state, and the electrode boiler bypass valve 11 is in the closed state. The primary heating network circulating water flows through the primary heating network heater 4 and then enters the electrode boiler 3 to absorb heat, and rises from temperature T2 to temperature T3.

[0034] Similar to the above-mentioned heat storage process of the heating pipe network, during the heating period of the thermal power plant, it is necessary to continuously supply heat to the heat user 21, and the heated primary heat network circulating water needs to flow through the secondary heat network heater 17 to supply heat to the heat user 21. The secondary heat network heater heat source side water inlet valve 18 and the secondary heat network heater heat source side water return valve 19 need to be in an open state, and the secondary heat network heater heat source side bypass valve 20 needs to be in a closed state. During the non-heating period of the thermal power plant, it is not necessary to supply heat to the heat user 21, the secondary heat network heater heat source side water inlet valve 18 and the secondary heat network heater heat source side water return valve 19 are in a closed state, and the secondary heat network heater heat source side bypass valve 20 is in an open state.

[0035] Similar to the above-mentioned heat storage process of the heating network, the circulating water of the primary heating network does not flow through the condensate heater 22, the water inlet valve 23 on the heat source side of the condensate heater and the water return valve 24 on the heat source side of the condensate heater need to be in a closed state, and the bypass valve 25 on the heat source side of the condensate heater is in an open state.

[0036] Same as the above heat storage process of the heating network, assuming that Q1 is the steam extraction heat of the steam turbine 1, Q2 is the heating capacity of the electrode boiler 3, Q3 is the heat storage of the heating network, and P1 is the heat supply to the heat user 21 during the heating period. Assuming that the excess steam extraction and excess power generation of the unit can be stored in the heating network, then during the heating period: Q1+Q2=Q3+P1, the peak load regulation capacity of the unit can be increased by Q1+Q2-P1=Q3; during the non-heating period, Q1+Q2=Q3, and the peak load regulation capacity of the unit can be increased by Q3.

[0037] Heat release process of the heating network: During the peak period of power consumption in the power grid, the heat stored in the heating network can be released to the heat user 21 or condensed water, thereby reducing the steam extraction of the unit and increasing the power generation of the unit. The primary heating network circulation pump 5 is in the starting state. During the peak period of power consumption in the power grid, the electrode boiler 3 is no longer used to heat the circulating water, so the electrode boiler water inlet valve 9 and the electrode boiler return valve 10 are in the closed state, and the electrode boiler bypass valve 11 is in the open state.

[0038] Similar to the heat release process of the heating network, during the heating period of the thermal power plant, the primary heating network heater inlet valve 6 and the primary heating network heater return valve 7 are in the open state, and the primary heating network heater bypass valve 8 is in the closed state. The primary heating network circulating water after heat storage enters the primary heating network heater 4 again to absorb heat and continuously supplies heat to the heat user 21. The heated primary heating network circulating water needs to flow through the secondary heating network heater 17 to supply heat to the heat users. The secondary heating network heater heat source side inlet valve 18 and the secondary heating network heater heat source side return valve 19 need to be in the open state, and the secondary heating network heater heat source side bypass valve 20 needs to be in the closed state.

[0039] Similar to the heat release process of the heating network, during the heating period of the thermal power plant, the circulating water of the primary heating network does not flow through the condensate heater 22, the inlet valve 23 on the heat source side of the condensate heater and the return valve 24 on the heat source side of the condensate heater need to be in a closed state, and the bypass valve 25 on the heat source side of the condensate heater is in an open state.

[0040] Similar to the heat release process of the heating network, during the non-heating period of the thermal power plant, heating is no longer provided to the heat user 21, and the steam turbine 1 no longer extracts steam to the primary heating network heater 4; the primary heating network heater inlet valve 6 and the primary heating network heater return valve 7 are in a closed state, the primary heating network heater bypass valve 8 is in an open state, the secondary heating network heater heat source side inlet valve 18 and the secondary heating network heater heat source side return valve 19 are in a closed state, and the secondary heating network heater heat source side bypass valve 20 is in an open state.

[0041] Similar to the heat release process of the heating network, during the non-heating period of the thermal power plant, the primary heating network circulating water after heat storage flows through the condensate heater 22, and the condensate is heated by using the heat storage of the heating network, thereby providing heat to the generator set to increase the power generation. The inlet valve 23 on the heat source side of the condensate heater and the return valve 24 on the heat source side of the condensate heater need to be in the open state, and the bypass valve 25 on the heat source side of the condensate heater should be in the closed state.

[0042] Same as the heat release process of the heating network, assuming that Q1 is the steam extraction heat of the steam turbine 1, Q3 is the heat storage of the heating network, P1 is the heat supply to the heat user 21 during the heating period, and P2 is the heat absorption of the condensate during the non-heating period. In the heating period: Q1+Q3=P1, assuming that Q3 can be fully used for heating, the amount of steam extraction for heating that can be reduced is P1-Q1=Q3; in the non-heating period, Q3=P2, assuming that P2 can be fully used for power generation, the amount of power generation that can be increased by the unit is Q3.

[0043] In particular, assuming that the pressure of the primary heating network circulating water needs to be stabilized at P0, a primary heating network circulating water pressure gauge 13 is provided on the primary heating network circulating water pipeline. According to the pressure value P1 displayed by the primary heating network circulating water pressure gauge 13, when P1>P0, the opening of the primary heating network circulating water pressure regulating valve 14 can be adjusted to discharge the primary heating network circulating water into the primary heating network circulating water buffer tank 15 for pressure relief; when P1<P0, the primary heating network circulating water make-up pump 16 can be opened to make up the water in the primary heating network circulating water buffer tank 15 into the primary heating network circulating water pipeline 28.

[0044] In particular, it is assumed that Q1 is the steam extraction heat of the steam turbine 1, Q2 is the heating capacity of the electrode boiler 3, Q3 is the heat storage of the heating network, P1 is the heat supply to the heat user 21 during the heating period, P2 is the heat absorption of the condensed water, T1 is the circulating water temperature before the primary heating network heater 4, T2 is the circulating water temperature after the primary heating network heater 4, and T3 is the circulating water temperature of the primary heating network after heating by the electrode boiler 3. The steam extraction amount from the steam turbine 1 to the primary heating network heater 4 can be adjusted according to P1 and Q3, as well as T1 and T2; the output of the electrode boiler 3 can be adjusted according to P1 and Q3, as well as T2 and T3.

[0045] The utility model utilizes the primary heat network circulating water pipeline 28 (heating network) of the thermal power plant, cooperates with the electrode boiler 3 and the condensate heater 22, and can store the excess steam extraction and power generation of the unit when the power grid is in a low power consumption period, and release the stored heat to the heating user 21 and the unit's own condensate when the power grid is in a peak power consumption period, thereby improving the peak-shaving capacity of the thermal power plant.

[0046] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A peak load regulation device for a thermal power plant using an electrode boiler for heating and a heating network for heat storage, characterized in that: It comprises a steam turbine (1), a generator (2), an electrode boiler (3), a primary heat network heater (4), a primary heat network circulating pump (5), a primary heat network circulating water buffer tank (15), a secondary heat network heater (17), a condensate heater (22) and a primary heat network circulating water pipeline (28); The steam turbine (1) is connected to a primary heating network heater (4), and the steam turbine (1) is connected to an electrode boiler (3) via a generator (2); a primary heating network circulating pump (5) is arranged on a primary heating network circulating water pipeline (28); a primary heating network heater water inlet valve (6) and a primary heating network heater water return valve (7) are respectively arranged between the primary heating network heater (4) and the primary heating network circulating water pipeline (28); A primary heating network heater bypass valve (8) is provided between the electrode boiler (3) and the primary heating network heater return valve (7); an electrode boiler water inlet valve (9) and an electrode boiler water return valve (10) are provided between the electrode boiler (3) and the primary heating network circulating water pipeline (28); an electrode boiler bypass valve (11) is provided between the electrode boiler water inlet valve (9) and the electrode boiler water return valve (10) on the primary heating network circulating water pipeline (28); a primary heating network circulating water buffer tank (15) and the primary heating network circulating water pipeline (28) are provided between the electrode boiler water inlet valve (9) and the electrode boiler water return valve (10 ... A primary heating network circulating water pressure regulating valve (14) and a primary heating network circulating water replenishing pump (16) are separately provided; a secondary heating network heater heat source side water inlet valve (18) and a secondary heating network heater heat source side water return valve (19) are respectively provided between the secondary heating network heater (17) and the primary heating network circulating water pipeline (28); a secondary heating network heater heat source side water inlet valve (18) and a secondary heating network heater heat source side water return valve (19) are provided on the primary heating network circulating water pipeline (28). A side bypass valve (20), the secondary heating network heater (17) is connected to a heat user (21); a condensate heater heat source side water inlet valve (23) and a condensate heater heat source side water return valve (24) are respectively provided between the condensate heater (22) and the primary heating network circulating water pipeline (28); a condensate heater heat source side bypass valve (25) is provided on the primary heating network circulating water pipeline (28) between the condensate heater heat source side water inlet valve (23) and the condensate heater heat source side water return valve (24).

2. A peak load regulation device for a thermal power plant using an electrode boiler for heating and a heating network for heat storage according to claim 1, characterized in that: A primary heating network circulating water supply thermometer (12) and a primary heating network circulating water pressure gauge (13) are provided on the primary heating network circulating water pipeline (28) between the electrode boiler (3) and the circulating water buffer tank (15).

3. A peak load regulation device for a thermal power plant using electrode boilers for heating and heat storage in a heating pipe network according to claim 2, characterized in that: A primary heating network heater front circulating water thermometer (26) is provided on the primary heating network circulating water pipeline (28) at the front end of the primary heating network heater water inlet valve (6) of the primary heating network heater (4).

4. A peak load regulation device for a thermal power plant using electrode boilers for heating and heat storage in a heating pipe network according to claim 3, characterized in that: A primary heating network heater rear circulating water thermometer (27) is provided on the primary heating network circulating water pipeline (28) at the rear end of the primary heating network heater return valve (7) of the primary heating network heater (4).

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