System for providing heat for circulating water of plate heat exchanger in heating heat exchange station

Abstract

The utility model belongs to the technical field of heating, and particularly relates to a system for providing heat for circulating water of a plate heat exchanger in a heating heat exchange station, which comprises a condensate header pipe connected with a heat medium inlet of the plate heat exchanger through a pipeline with a second gate valve. A heat medium outlet of the plate heat exchanger is connected with a condensate recycling station through a pipeline with a first gate valve, a cold medium inlet of the plate heat exchanger is connected with an outlet of a first water pump through a pipeline with a fourth gate valve, and an inlet of the first water pump is connected with a water outlet of a heat exchange station user through a pipeline with a fifth gate valve. A water inlet of the heat exchange station user is connected with a cold medium outlet of the plate heat exchanger through a pipeline with a third gate valve, the plate heat exchanger uses waste heat of steam condensate as a heating medium, the heat is exchanged to heating circulating water, the purpose of heat recovery is achieved, and the waste heat of a steam condensate system can be effectively utilized.

Description

Technical Field

[0001] This utility model belongs to the field of heating technology, specifically relating to a system for providing heat to the circulating water of a plate heat exchanger in a heating heat exchange station. Background Technology

[0002] During the operation of heating heat exchange stations in winter, a large amount of steam heat is required to maintain the normal operation of the stations. The common method is to use 0.5MPa low-pressure steam in the steam system as the heat medium to raise the temperature of each heat exchange station. To maintain the normal operation of the heat exchange stations, during periods when other production units using low-pressure steam are operating at high loads, the steam system may experience insufficient reserve capacity. This forces other production units to reduce their load, and there is even a risk of partial shutdowns. Simultaneously, the condensate recovery station in the water supply system experiences frequent overflows and large amounts of steam leakage. The heat dissipation in the steam-condensate system is highly mismatched and unbalanced, resulting in a serious waste of waste heat from the steam condensate. Utility Model Content

[0003] This invention addresses the aforementioned problems by providing a system for supplying heat to the circulating water of a plate heat exchanger in a heating station.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A system for providing heat to the circulating water of a plate heat exchanger in a heating heat exchange station includes a condensate main pipe, which is connected to the heat medium inlet of the plate heat exchanger via a pipe equipped with a No. 2 gate valve. The heat medium outlet of the plate heat exchanger is connected to a condensate recovery station via a pipe equipped with a No. 1 gate valve. The cold medium inlet of the plate heat exchanger is connected to the outlet of a No. 1 water pump via a pipe equipped with a No. 4 gate valve. The inlet of the No. 1 water pump is connected to the outlet of the heat exchange station user via a pipe equipped with a No. 5 gate valve. The inlet of the heat exchange station user is connected to the cold medium outlet of the plate heat exchanger via a pipe equipped with a No. 3 gate valve.

[0006] Furthermore, the inlet of the No. 1 water pump is connected to the outlet of the makeup water pump via a pipeline with a No. 6 gate valve, and the inlet of the makeup water pump is connected to the water storage tank via a pipeline.

[0007] Furthermore, there are two water replenishment pumps, which are connected in parallel.

[0008] Furthermore, a second water pump is connected in parallel between the inlet and outlet of the first water pump.

[0009] Furthermore, a check valve is installed on the pipe at the cold medium inlet of the plate heat exchanger.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] This utility model's plate heat exchanger uses the waste heat of steam condensate as a heat medium to transfer heat to the heating circulating water, achieving the purpose of heat recovery. It can effectively utilize the waste heat of the steam condensate system, avoiding the waste of the waste heat of the steam condensate system, and reducing the consumption of 0.5MPa low-pressure steam in winter. It achieves winter heating while effectively ensuring the high-load stable operation of other production equipment.

[0012] This invention delivers hot water to a plate heat exchanger via a steam condensate pipeline to heat the heating circulating water within the plate heat exchanger, thereby achieving the heat exchange purpose of the plate heat exchanger. A one-way valve and a No. 4 gate valve are installed on the cold medium inlet pipeline of the plate heat exchanger to prevent backflow of the heating circulating water in special circumstances and to adjust the heating circulating water flow rate according to actual conditions. A No. 2 gate valve is installed on the hot medium inlet pipeline of the plate heat exchanger to adjust the steam condensate flow rate according to actual conditions. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] In the diagram, the main condensate pipe is 1, gate valve 2 is 2, plate heat exchanger is 3, gate valve 1 is 4, condensate recovery station is 5, gate valve 4 is 6, water pump 1 is 7, gate valve 5 is 8, heat exchange station user is 9, gate valve 3 is 10, gate valve 6 is 11, water supply pump is 12, water storage tank is 13, water pump 2 is 14, and check valve is 15. Detailed Implementation

[0015] To further illustrate the technical solution of this utility model, the following embodiments will be used to further explain this utility model.

[0016] like Figure 1As shown, a system for providing heat to the circulating water of a plate heat exchanger in a heating heat exchange station includes a condensate main pipe 1. The condensate main pipe 1 is connected to the heat medium inlet of a plate heat exchanger 3 via a pipe equipped with a gate valve 2. The heat medium outlet of the plate heat exchanger 3 is connected to a condensate recovery station 5 via a pipe equipped with a gate valve 4. The cold medium inlet of the plate heat exchanger 3 is connected to the outlet of a water pump 7 via a pipe equipped with a gate valve 6 and a check valve 15. The inlet of the water pump 7 is connected to a pipe equipped with a gate valve 5. The pipe of gate valve 8 is connected to the outlet of user 9 in the heat exchange station. A second water pump 14 is connected in parallel between the inlet and outlet of the first water pump 7. The inlet of user 9 in the heat exchange station is connected to the cold medium outlet of plate heat exchanger 3 through a pipe with a third gate valve 10. The inlet of the first water pump 7 is also connected to the outlet of makeup water pump 12 through a pipe with a sixth gate valve 11. The inlet of makeup water pump 12 is connected to water storage tank 13 through a pipe. There are two makeup water pumps 12, and the two makeup water pumps 12 are set in parallel.

[0017] The foregoing has shown and described the main features and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0018] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A system for providing heat to the circulating water of a plate heat exchanger in a heating heat exchange station, characterized in that: The system includes a condensate main pipe (1), which is connected to the heat medium inlet of the plate heat exchanger (3) via a pipe with a gate valve (2). The heat medium outlet of the plate heat exchanger (3) is connected to the condensate recovery station (5) via a pipe with a gate valve (4). The cold medium inlet of the plate heat exchanger (3) is connected to the outlet of the first water pump (7) via a pipe with a gate valve (6). The inlet of the first water pump (7) is connected to the outlet of the heat exchange station user (9) via a pipe with a gate valve (8). The inlet of the heat exchange station user (9) is connected to the cold medium outlet of the plate heat exchanger (3) via a pipe with a gate valve (10).

2. The system for providing heat to the circulating water of a plate heat exchanger in a heating heat exchange station according to claim 1, characterized in that: The inlet of the No. 1 water pump (7) is also connected to the outlet of the water replenishment pump (12) through a pipeline with a No. 6 gate valve (11), and the inlet of the water replenishment pump (12) is connected to the water storage tank (13) through a pipeline.

3. A system for providing heat to the circulating water of a plate heat exchanger in a heating station according to claim 2, characterized in that: There are two water replenishment pumps (12), and the two water replenishment pumps (12) are connected in parallel.

4. A system for providing heat to the circulating water of a plate heat exchanger in a heating heat exchange station according to claim 1, characterized in that: A second water pump (14) is connected in parallel between the inlet and outlet of the first water pump (7).

5. A system for providing heat to the circulating water of a plate heat exchanger in a heating heat exchange station according to claim 1, characterized in that: A check valve (15) is installed on the pipeline at the cold medium inlet of the plate heat exchanger (3).

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