CN218763604U

CN218763604U - High-low side combined heating system

Info

Publication number: CN218763604U
Application number: CN202221588335.6U
Authority: CN
Inventors: 周国锋; 罗冰; 姜培鹏; 刘广耀; 邹萌; 王爱民; 崔国辉; 李青
Original assignee: Shandong Huadian Energy Saving Technology Co ltd
Current assignee: Shandong Huadian Energy Saving Technology Co ltd
Priority date: 2022-06-23
Filing date: 2022-06-23
Publication date: 2023-03-28
Anticipated expiration: 2032-06-23

Abstract

The utility model belongs to the technical field of heating system, a other joint heating system of height is provided, include: the boiler is internally fixed with a reheater, an outlet of the reheater is communicated with a first pipeline, and an outlet of the first pipeline is communicated with a second pipeline; the heat exchange initial station is communicated with the reheater through the first pipeline and the second pipeline, and a first valve and a first low-side valve are mounted on the second pipeline; a superheater is further fixed inside the boiler, an outlet of the superheater is communicated with a high-pressure cylinder through a fourth pipeline, and the high-pressure cylinder is communicated with an inlet of the reheater through a fifth pipeline; a sixth pipeline is communicated between the fourth pipeline and the fifth pipeline; a second valve and a high bypass valve are arranged on the sixth pipeline; the utility model discloses can realize the purpose of thermoelectric decoupling zero, the unit can realize the many heats of few electricity generation promptly, when reaching the new forms of energy of absorption, can also guarantee the heat supply of civilian life.

Description

High-low side combined heating system

Technical Field

The utility model belongs to the technical field of heating system, concretely relates to other joint heating system of height.

Background

In recent years, the installed capacity of new energy electric power such as wind power, photovoltaic and hydropower is continuously and rapidly increased. New energy sources such as wind power and photovoltaic power provide a large amount of clean power for people, but the randomness and instability of the generated output of the new energy sources also bring great challenges to the safe operation and power supply guarantee of a power system. From the current situation, the power system regulating capability is difficult to completely adapt to the requirements of large-scale development and consumption of new energy, and the problems of wind abandonment, light abandonment and water abandonment are more serious in partial regions.

In order to solve the problem of increasing wind (light and water) abandonment, the improvement of the consumption capability of new energy and the improvement of the operation flexibility of a thermal power generating unit are urgent tasks. Particularly, aiming at a cogeneration unit in a cold area, the heat supply period needs to ensure the heat supply of people and respond to the trend of reducing the electric load and absorbing new energy.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned problem, provided a other combined heating system of height, the utility model discloses can realize the purpose of thermoelectric decoupling zero, the unit can realize the many heats of few electricity generation promptly, when reaching the new forms of energy of absorption, can also guarantee the heat supply of livelihood.

According to some embodiments, the utility model provides a other heating system that unites of height adopts following technical scheme:

other combined heating system of height includes:

the boiler is internally fixed with a reheater, an outlet of the reheater is communicated with a first pipeline, and an outlet of the first pipeline is communicated with a second pipeline;

the heat exchange initial station is communicated with the reheater through the first pipeline and the second pipeline, and a first valve and a first low-side valve are mounted on the second pipeline;

a superheater is further fixed inside the boiler, an outlet of the superheater is communicated with a high-pressure cylinder through a fourth pipeline, and the high-pressure cylinder is communicated with an inlet of the reheater through a fifth pipeline; a sixth pipeline is communicated between the fourth pipeline and the fifth pipeline; and a second valve and a high bypass valve are arranged on the sixth pipeline.

Furthermore, the outlet of the first pipeline is also communicated with a third pipeline which is mutually connected with the second pipeline in parallel.

Further, still include the condenser, through first pipeline with the third pipeline with the reheater intercommunication, install the second low side valve on the third pipeline.

Further, the condenser is communicated with an inlet of the superheater through a pipeline.

Further, the first pipeline is connected with an intermediate pressure cylinder through a seventh pipeline.

Further, a third valve is installed on the seventh pipeline.

Furthermore, the intermediate pressure cylinder is communicated with a low pressure cylinder through a pipeline.

Further, the low-pressure cylinder is communicated with the condenser through a pipeline.

Further, a pressurizer is installed on the first pipeline.

Compared with the prior art, the beneficial effects of the utility model are that:

in the utility model, the heat exchange initial station is communicated with the reheater through a first pipeline and a second pipeline, and a first valve and a first low side valve are arranged on the second pipeline; the outlet of the superheater is communicated with a high-pressure cylinder through a fourth pipeline, and the high-pressure cylinder is communicated with the inlet of the reheater through a fifth pipeline; a sixth pipeline is communicated between the fourth pipeline and the fifth pipeline; a second valve and a high bypass valve are arranged on the sixth pipeline; through the connection relation of a sixth pipeline, a second valve, a high side valve, a fifth pipeline, a first pipeline, a second pipeline, a first valve, a first low side valve and a heat exchange initial station, when the peak load needs to be adjusted in the heat supply period, the second valve, the high side valve, the first valve and the first low side valve are opened, and the second low side valve is closed; adjusting the heating steam pressure of the third valve, and adjusting the flow of the heating steam of the high side valve and the first low side valve; under the unchangeable prerequisite of heating capacity, the purpose of greatly reducing electric load realizes the purpose of thermoelectric decoupling zero, and the unit can realize few electricity generation many heats promptly, reaches when consuming and accepting the new forms of energy, can also guarantee the heat supply of livelihood.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.

Fig. 1 is a schematic structural view of embodiment 1 of the present invention;

FIG. 2 is a schematic view of a conventional high-low side combined heating system of the present invention;

wherein: 1. a boiler; 101. a reheater; 102. a superheater; 2. a first conduit; 3. a second pipe; 4. a third pipeline; 5. a seventh pipe; 6. a heat exchange initial station; 7. a condenser; 8. a first valve; 9. a first low bypass valve; 10. a second low bypass valve; 11. a third valve; 12. a high pressure cylinder; 13. an intermediate pressure cylinder; 14. a low pressure cylinder; 15. a fourth conduit; 16. a fifth pipeline; 17. a sixth pipeline; 18. a second valve; 19. a high bypass valve; 20. a water supply pipe; 21. a user water return pipeline; 22. a user heating pipe; 23. a solid electric thermal storage device; 24. a high voltage station transformer; 25. high-voltage cable of transformer substation.

The specific implementation mode is as follows:

the present invention will be further explained with reference to the accompanying drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

The noun interpretation: load shedding, which is the result of sudden load loss of a steam turbine for some reason when the steam turbine is under a certain load; for example, a steam turbine generator unit causes a steam turbine to lose electric load suddenly due to the sudden disconnection of a generator from a power grid; and a steam turbine and water pump coupling of the steam turbine and water pump unit is broken. In short, the load shedding of the steam turbine refers to a condition that the rotating speed of the steam turbine suddenly rises due to the fact that the reverse torque acting on the rotor suddenly reduces or disappears when the steam turbine is in a normal working state.

Example 1:

the embodiment provides a high-low side combined heating system, which comprises a boiler 1, a heat exchange initial station 6, a condenser 7, a high-pressure cylinder 12, an intermediate pressure cylinder 13, a low-pressure cylinder 14 and the like;

a reheater 101 is fixed inside the boiler 1, an outlet of the reheater 101 is fixedly communicated with an inlet of a first pipeline 2, and an outlet of the first pipeline 2 is simultaneously and fixedly communicated with a second pipeline 3 and a third pipeline 4 which are connected in parallel; part of the steam of the reheater 101 enters the intermediate pressure cylinder 13, and the other part of the steam enters the user heating pipeline 22 after passing through the heat exchange initial station, which belongs to the conventional arrangement;

the heat exchange initial station 6 is communicated with an outlet of the reheater 101 through the first pipeline 2 and the second pipeline 3, and a first valve 8 and a first low-side valve 9 are installed on the second pipeline 3;

the condenser 14 is communicated with an outlet of the reheater 101 through the first pipeline 2 and the third pipeline 4, and a second low-side valve 10 is installed on the third pipeline 4.

In this embodiment, the first valve 8, the first low-side valve 9 and the second low-side valve 10 can be selected according to the requirement, for example, the first valve 8 is configured as an on-off valve, and the first low-side valve 9 and the second low-side valve 10 are configured as regulating valves.

The first pipeline 2 is also provided with a pressure reducer, the heat exchange initial station 6 is connected with a user heating pipeline 22 and a user water return pipeline 21, the heat exchange initial station 6 is connected with a solid electric heat storage device 23 through a pipeline, and the like, and all the devices belong to conventional devices and are not detailed here.

In this embodiment, a superheater 102 is further fixed inside the boiler, an outlet of the superheater 102 is communicated with a high pressure cylinder 12 through a fourth pipeline 15, the high pressure cylinder 12 is communicated with an inlet of the reheater 102 through a fifth pipeline 16, a feedwater pipe may be disposed at the inlet of the superheater 102 for connection with the fifth pipeline 16, and the arrangement of the pipelines and the connection between the pipelines are conventional.

In this embodiment, a sixth duct 17 is communicated between the fourth duct 15 and the fifth duct 16; a second valve 18 and a high bypass valve 19 are arranged on the sixth pipeline 17; the second valve 18 and the high-side valve 19 may be selected as desired, for example, the second valve 18 may be configured as an on-off valve and the high-side valve 19 may be configured as a regulating valve.

In this embodiment, the condenser 7 may be in communication with an inlet of the superheater 102 through a pipe.

In this embodiment, the first pipeline 2 is further connected to an intermediate pressure cylinder 13 through a seventh pipeline 5, and a third valve 11 may be installed on the seventh pipeline 5.

The intermediate pressure cylinder 11 is communicated with a low pressure cylinder 14 through a pipeline, a valve and the like, and the low pressure cylinder 14 can be further connected with a high pressure station transformer 24, a transformer substation high voltage cable and the like through a lead, a generator and the like, which belong to conventional settings; the low pressure cylinder 14 passes through pipe connection condenser 7, and the steam extraction of low pressure cylinder 14 gets into condenser 7, and the condensate water of condenser 7 gets into the oxygen-eliminating device to and the condenser passes through the condensate pump and links to each other with the oxygen-eliminating device, and the oxygen-eliminating device passes through the feed pump and links to each other with heater group, the entry of over heater 102, belongs to conventional setting, does not detail again here.

When the unit is started, the second valve 18, the high bypass valve 19 and the second low bypass valve 10 are opened; closing the first valve 8, the first low bypass valve 9 and the third valve 11, wherein the high and low bypass valves play a role of starting a bypass; when the high-low side combined heat supply and load shedding are carried out, the second low side valve 10 is opened rapidly, the first valve 8 and the first low side valve 9 are closed simultaneously, heat supply steam rapidly passes through the third pipeline 4 and the second low side valve 10 and then enters the condenser 7, and unit safety is guaranteed.

In other embodiments, for the purpose of detecting the system, a flow meter and a temperature sensor may be installed or fixed on the second pipe 3 near the first valve 8, the third pipe 4 near the second low-side valve 10, and the sixth pipe 17 near the second valve 18, so as to realize real-time detection of the flow rate and the temperature in the pipe; the temperature sensor may be provided as a non-contact temperature sensor.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Other heating system that unites of height, its characterized in that includes:

a superheater is further fixed inside the boiler, an outlet of the superheater is communicated with a high-pressure cylinder through a fourth pipeline, and the high-pressure cylinder is communicated with an inlet of the reheater through a fifth pipeline; a sixth pipeline is communicated between the fourth pipeline and the fifth pipeline; a second valve and a high bypass valve are arranged on the sixth pipeline;

the outlet of the first pipeline is also communicated with a third pipeline which is mutually connected with the second pipeline in parallel; the first pipeline is also connected with a medium pressure cylinder through a seventh pipeline; a third valve is arranged on the seventh pipeline; the intermediate pressure cylinder is communicated with a low pressure cylinder through a pipeline.

2. A combined high and low side heating system according to claim 1, further comprising a condenser in communication with the reheater via the first conduit and the third conduit, the third conduit having a second low side valve mounted thereon.

3. The combined high-low side heating system as claimed in claim 2, wherein the condenser is communicated with the inlet of the superheater through a pipeline.

4. The combined high-low side heating system according to claim 2, wherein the low-pressure cylinder is communicated with the condenser through a pipeline.

5. A combined high and low side heating system according to claim 1, wherein a pressurizer is mounted to the first pipe.