Regional hot water heating temperature compensation system

Abstract

The invention belongs to the technical field of heating equipment, and particularly relates to a regional hot water heating temperature compensation system which comprises a first steam-water heat exchanger, a second steam-water heat exchanger, a hot water supply pipeline and a steam supply pipeline. One of the two steam-water heat exchangers is used and the other is standby; the four interface valves of which steam-water heat exchanger is used can be opened, and the four interface valves of the other steam-water heat exchanger can be closed at the same time. Interface valves of the first steam-water heat exchanger are a fourth gate valve, a fifth gate valve, a ninth gate valve and a tenth gate valve in one group; and a sixth gate valve, a seventh gate valve, an eleventh gate valve and a twelfth gate valve of the second steam-water heat exchanger are in one group.

Description

Technical Field

[0001] The invention belongs to the technical field of heating equipment, and in particular relates to a regional hot water heating temperature compensation system. Background Art

[0002] When the temperature of the hot water for district heating is insufficient, it is difficult for the individual buildings heated by the hot water to reach the designed temperature value, causing human discomfort and even causing industrial production to stop. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a regional hot water heating temperature compensation system, characterized in that it includes a first steam-water heat exchanger, a second steam-water heat exchanger, a hot water supply pipeline and a steam supply pipeline;

[0004] The end of the main body of the hot water supply pipeline 1 is connected to the hot water end, and is provided with a first gate valve 26, a remote thermometer 27, and an ultrasonic flowmeter 28; a first branch pipeline 2 is led out from the middle of the hot water supply pipeline 1, and a third gate valve 3 and a first shut-off valve 4 are provided on the first branch pipeline 2 in sequence. The end of the first branch pipeline 2 is divided into a sub-pipeline A5 and a sub-pipeline B6, wherein the sub-pipeline A5 is connected to the first steam-water heat exchanger 7, and a fourth gate valve 8 is provided on the sub-pipeline A5; The sub-pipeline B6 is connected to the second steam-water heat exchanger 9, and a sixth gate valve 10 is provided on the sub-pipeline B6. The outlet of the first steam-water heat exchanger 7 is connected to a water outlet pipeline A11, which is provided with a fifth gate valve 12. The outlet of the second steam-water heat exchanger 9 is connected to a water outlet pipeline B13, which is provided with a seventh gate valve 14. The outlet pipeline A11 and the second half of the outlet pipeline B13 are combined and connected to the hot water supply pipeline 1.

[0005] The steam supply pipeline 14 is provided with an eighth gate valve 15, a second shut-off valve 16 and a vortex flowmeter 17 in sequence. The end of the pipeline is divided into two branches, namely the steam supply pipeline A18 and the steam supply pipeline B19. The steam supply pipeline A18 supplies hot steam to the first steam-water heat exchanger 7 and is provided with a ninth gate valve 20; the steam supply pipeline B19 supplies hot steam to the second steam-water heat exchanger 9 and is provided with an eleventh gate valve 21; among them, on the hot water supply pipeline 1, a third shut-off valve 22 is provided on the rear half of the pipeline at the connection of the first branch pipeline 2.

[0006] Furthermore, a steam condensate discharge pipe is led out from the first steam-water heat exchanger and the second steam-water heat exchanger respectively. The steam condensate discharge pipe of the first steam-water heat exchanger is provided with a tenth gate valve 23; the steam condensate discharge pipe of the second steam-water heat exchanger is provided with a twelfth gate valve 24.

[0007] The temperature control system automatically opens and closes the corresponding valves when the heating water temperature falls below the set point, cutting off the sub-temperature heating water supply and ensuring that steam enters the heat exchanger in time to heat the hot water, which is then used for heating. This automated setting eliminates the need for human supervision. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the system structure of the present invention;

[0009] Among them, 1. hot water supply pipeline; 2. first branch pipeline; 3. third gate valve; 4. first shut-off valve; 5. sub-pipeline A; 6. sub-pipeline B; 7. first steam-water heat exchanger; 8. fourth gate valve; 9. second steam-water heat exchanger; 10. sixth gate valve; 11. outlet pipeline A; 12. fifth gate valve; 13. outlet pipeline B; 14. seventh gate valve; 15. eighth gate valve; 16. second shut-off valve; 17. vortex flowmeter; 18. steam supply pipeline A; 19. steam supply pipeline B; 20. ninth gate valve; 21. eleventh gate valve; 22. third shut-off valve; 23. tenth gate valve; 24. twelfth gate valve; 25. second gate valve; 26. first gate valve; 27. remote thermometer; 28. ultrasonic flowmeter. DETAILED DESCRIPTION

[0010] The principles and features of the present invention are described below with reference to 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.

[0011] refer to Figure 1 , the present invention provides a regional hot water heating temperature compensation system, comprising a first steam-water heat exchanger, a second steam-water heat exchanger, a hot water supply pipeline and a steam supply pipeline;

[0012] The end of the main body of the hot water supply pipeline 1 is connected to the hot water end, and is provided with a first gate valve 26, a remote thermometer 27, and an ultrasonic flowmeter 28; a first branch pipeline 2 is led out from the middle of the hot water supply pipeline 1, and the first branch pipeline 2 is provided with a third gate valve 3 and a first shut-off valve 4 in sequence. The end of the first branch pipeline 2 is divided into a sub-pipeline A5 and a sub-pipeline B6, wherein the sub-pipeline A5 is connected to the first steam-water heat exchanger 7, and the sub-pipeline A5 is provided with a fourth gate valve 8; wherein the sub-pipeline B6 is connected to the second steam-water heat exchanger 9, and the sub-pipeline B6 is provided with a sixth gate valve 10; the outlet end of the first steam-water heat exchanger 7 is connected to a water outlet pipeline A11, and the water outlet pipeline A11 is provided with a fifth gate valve 12; the outlet end of the second steam-water heat exchanger 9 is connected to a water outlet pipeline B13, and the water outlet pipeline B13 is provided with a seventh gate valve 14; the water outlet pipeline A11 and the second half of the water outlet pipeline B13 are combined and connected to the hot water supply pipeline 1;

[0013] Steam supply line 14 is sequentially equipped with an eighth gate valve 15, a second shut-off valve 16, and a vortex flowmeter 17. The line branches into two branches: steam supply line A18 and steam supply line B19. Steam supply line A18 supplies hot steam to the first steam-water heat exchanger 7 and is equipped with a ninth gate valve 20. Steam supply line B19 supplies hot steam to the second steam-water heat exchanger 9 and is equipped with an eleventh gate valve 21. A third shut-off valve 22 is installed on the hot water supply line 1, in the rear half of the line where the first branch line 2 connects. A second gate valve 23 is installed on the hot water supply line 1, in the rear portion of the line where water line B13 connects to the hot water supply line 1.

[0014] As an improvement to the solution, a steam condensate discharge pipe is led out from the first steam-water heat exchanger and the second steam-water heat exchanger respectively. The steam condensate discharge pipe of the first steam-water heat exchanger is provided with a tenth gate valve 23; the steam condensate discharge pipe of the second steam-water heat exchanger is provided with a twelfth gate valve 25.

[0015] This solution provides a heat exchanger station process for a district heating system. Normally, hot water is used. When the hot water temperature falls below a set point, an electric valve automatically opens steam to the heat exchanger, simultaneously shutting off the remaining sub-zero water. The hot water heated by steam in the heat exchanger is then supplied to the external network for heating.

[0016] The usage process of this solution:

[0017] Two steam-water heat exchangers are used, one in use and one in backup. The four interface valves of the heat exchanger in use are opened, while the four interface valves of the other heat exchanger are closed. The interface valves of the first heat exchanger are gate valves 4, 5, 9, and 10, forming a group. The interface valves of the second heat exchanger are gate valves 6, 7, 11, and 12, forming a group.

[0018] The normally open valve CSO shown in the figure is manual. In this solution, the normally open valves are the first gate valve, the second gate valve, the third gate valve, and the eighth gate valve, which are normally open. The equipment or pipelines after this valve are closed when maintenance is required.

[0019] When the feed water temperature is higher than 45°C, the electric valve D3-01 (i.e., the third shut-off valve 22) is in the open state, the electric valve D3-02 (i.e., the first shut-off valve) is in the closed state, and the electric valve D3-03 (i.e., the second shut-off valve) is in the closed state; at this time, the hot water does not flow through the heat exchanger.

[0020] When the feed water temperature is lower than 45℃, the electric valve D3-01 is closed, the electric valve D3-02 is opened, and the electric valve D3-03 is opened; at this time, the hot water goes to the heat exchanger.

[0021] Temperature-related interlocking devices (electric valves, thermometers) and flow meters are installed within the heat exchange station, and display and operating signals are displayed in the control room via remote transmission. No need to visit the heat exchange station for inspections, heating supply switching is automatically completed when the heating temperature is insufficient, ensuring that the heating hot water supply meets the standards.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A regional hot water heating temperature compensation system, characterized in that: It includes a first steam-water heat exchanger, a second steam-water heat exchanger, a hot water supply pipeline and a steam supply pipeline; The end of the hot water supply pipeline (1) is connected to the hot water end, and is provided with a first gate valve (26), a remote thermometer (27), and an ultrasonic flowmeter (28); a first branch pipeline (2) is led out from the middle of the hot water supply pipeline (1), and a third gate valve (3) and a first shut-off valve (4) are provided on the first branch pipeline (2) in sequence. The end of the first branch pipeline (2) is divided into a sub-pipeline A (5) and a sub-pipeline B (6), wherein the sub-pipeline A (5) is connected to the first steam-water heat exchanger (7), and the sub-pipeline A (5) is provided with a fourth gate valve (8); The sub-pipeline B (6) is connected to the second steam-water heat exchanger (9), and the sub-pipeline B (6) is provided with a sixth gate valve (10); the outlet end of the first steam-water heat exchanger (7) is connected to a water outlet pipeline A (11), and the water outlet pipeline A (11) is provided with a fifth gate valve (12); the outlet end of the second steam-water heat exchanger (9) is connected to a water outlet pipeline B (13), and the water outlet pipeline B (13) is provided with a seventh gate valve (14); the water outlet pipeline A (11) and the rear half of the water outlet pipeline B (13) are combined and connected to the hot water supply pipeline (1); The steam supply pipeline (14) is provided with an eighth gate valve (15), a second shut-off valve (16) and a vortex flowmeter (17) in sequence. The end of the pipeline is divided into two branches, namely a steam supply pipeline A (18) and a steam supply pipeline B (19). The steam supply pipeline A (18) supplies hot steam to the first steam-water heat exchanger (7) and is provided with a ninth gate valve (20); the steam supply pipeline B (19) supplies hot steam to the second steam-water heat exchanger (9) and is provided with an eleventh gate valve (21). In particular, a third shut-off valve (22) is provided on the rear half of the hot water supply pipeline (1) at the connection point with the first branch pipeline (2).

2. A regional hot water heating temperature compensation system according to claim 1, characterized in that: A steam condensate discharge pipe is led out from the first steam-water heat exchanger and the second steam-water heat exchanger respectively. A tenth gate valve (23) is provided on the steam condensate discharge pipe of the first steam-water heat exchanger; a twelfth gate valve (24) is provided on the steam condensate discharge pipe of the second steam-water heat exchanger.

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