Condensate water recovery device of steam heating system

Abstract

A condensate water recovery device of a steam heating system relates to the technical field of steelmaking equipment and comprises a water storage tank, a high-low liquid level sensor and a steam condensate water pipeline, the steam condensate water pipeline is respectively connected with a water inlet pipeline and a water drainage pipeline, and the water inlet pipeline is sequentially provided with an overhaul main valve and a bypass flow expansion valve and is connected with the water storage tank. A sealing cover is arranged at the top end of the water storage tank, a high-low liquid level sensor is arranged on the outer side wall of the water storage tank, the upper portion of the water storage tank is connected with a high-liquid-level overflow drainage pipe, the lower portion of the water storage tank is connected with a lowest-liquid-level drainage pipeline, a hot water pump is installed on the lowest-liquid-level drainage pipeline, and the lowest-liquid-level drainage pipeline is connected with a hot water user side. And the drainage pipeline is provided with a maintenance bypass drainage valve and is connected with the second drainage ditch. The condensate water recycling device of the steam heating system is suitable for various working conditions with large steam condensate water discharge capacity, the recycling rate of hot water and steam-water mixtures is high, facility operation is easy, and running is safe and reliable.

Description

Technical Field:

[0001] The utility model relates to the technical field of steelmaking equipment, and particularly relates to a condensate recovery device for a steam heating system. Background Art:

[0002] In steel and industrial and mining enterprises, steam heating is mostly adopted in production workshops. After steam heat exchange, a large amount of condensate is generated, which is discharged into the outdoor ditch sewage system in the form of a steam-water mixture through a drainer, resulting in energy waste and affecting the visibility of the surrounding environment. Content of the Utility Model:

[0003] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art, and provide a condensate recovery device for a steam heating system, which is suitable for various working conditions with a large steam condensate discharge. The device has a high recovery and utilization rate of hot water and steam-water mixture, simple facility operation, and safe and reliable operation.

[0004] To solve the problems in the background art, the utility model adopts the following technical scheme: it includes a water storage tank, high and low liquid level sensors, and a steam condensate pipeline. The steam condensate pipeline is respectively connected to an inlet pipeline and a drainage pipeline. An overhaul main valve and a bypass flow expansion valve are sequentially installed on the inlet pipeline. The inlet pipeline is connected to the water storage tank. The top of the water storage tank is provided with a sealing cover. High and low liquid level sensors are arranged on the outer side wall of the water storage tank. The upper part of the water storage tank is connected to a high liquid level overflow drainage pipe, and the high liquid level overflow drainage pipe is connected to a first drainage ditch. The lower part of the water storage tank is connected to a lowest liquid level drainage pipeline. A hot water pump is installed on the lowest liquid level drainage pipeline. The lowest liquid level drainage pipeline is connected to a hot water user end; an overhaul bypass drainage valve is installed on the drainage pipeline, and the drainage pipeline is connected to a second drainage ditch.

[0005] The water storage tank is filled with steam condensate.

[0006] An observation hole and a pressure relief pipe are arranged on the sealing cover.

[0007] A pipeline is arranged below the bypass flow expansion valve. The pipeline is connected to the inlet pipeline, and a steam trap is installed on the pipeline.

[0008] The high and low liquid level sensors are connected to the hot water pump through wires.

[0009] The beneficial effect of the utility model is that the utility model recovers the 70 - 100 °C steam-water mixture discarded by the steam heating system, comprehensively solves the problems of steam-water separation and recovery and utilization, and conducts special design in terms of safety, achieving safety and reliability and prominent benefits. Description of the Drawings:

[0010] Figure 1 It is a structural schematic diagram of the utility model. Specific implementation mode:

[0011] Referring to the figure, the specific implementation mode of the present utility model is as follows: It includes a water storage tank 4, a high and low liquid level sensor 7, and a steam condensate pipeline 1. The steam condensate pipeline 1 is respectively connected to a water inlet pipeline 3 and a drainage pipeline 12. A maintenance main valve 2 and a bypass flow expansion valve 14 are successively installed on the water inlet pipeline 3. The water inlet pipeline 3 is connected to the water storage tank 4. The top of the water storage tank 4 is provided with a sealing cover 18. The outer side wall of the water storage tank 4 is provided with a high and low liquid level sensor 7. The upper part of the water storage tank 4 is connected to a high liquid level overflow drainage pipe 8. The high liquid level overflow drainage pipe 8 is connected to a first drainage ditch 9. The lower part of the water storage tank 4 is connected to a lowest liquid level drainage pipeline 17. A hot water pump 16 is installed on the lowest liquid level drainage pipeline 17. The lowest liquid level drainage pipeline 17 is connected to a hot water user end; A maintenance bypass drainage valve 11 is installed on the drainage pipeline 12. The drainage pipeline 12 is connected to a second drainage ditch 10. The water storage tank 4 is filled with steam condensate 15. The sealing cover 18 is provided with an observation hole 5 and a pressure relief pipe 6. A pipeline is provided below the bypass flow expansion valve 14. The pipeline is connected to the water inlet pipeline 3. A steam trap 13 is installed on the pipeline. The high and low liquid level sensor 7 is connected to the hot water pump 16 through a wire.

[0012] When this steam heating system condensate recovery device is in use:

[0013] 1. A sealing cover 18 is installed at the top of the water storage tank 4. The sealing cover 18 is equipped with a pressure relief exhaust pipe 6 and an observation hole 5 to ensure that the water storage tank 4 is a non-pressure-bearing structure;

[0014] 2. A high and low liquid level sensor 7 is installed on the water storage tank 4 to automatically control the start and stop of the hot water pump 16, and an alarm prompt is required at the post before starting and stopping to facilitate adding or reducing water in a timely manner;

[0015] 3. The highest liquid level control needs to be lower than the high liquid level overflow drainage pipe 8, and the lowest liquid level needs to ensure that the hot water pump 16 does not cavitate.

[0016] When this steam heating system condensate recovery device is in normal use, the maintenance main valve 2 and the bypass flow expansion valve 14 are opened, and the maintenance bypass drainage valve 11 is closed; When maintenance is required, the bypass flow expansion valve 14 is closed, and the maintenance bypass drainage valve 11 is opened. The waste water enters the second drainage ditch 10 through the drainage pipeline 12.

[0017] Once the steam condensate 15 in the water storage tank 4 exceeds the highest liquid level, it is discharged to the first drainage ditch 9 through the high liquid level overflow drainage pipe 8.

[0018] To sum up, for this steam heating system condensate recovery device, in order to avoid scalding or burning caused by high temperature and splashing of molten iron, it is necessary to improve the convenience and practicability of replacing the bracket. In order to stabilize the operation of the equipment, it is necessary to improve the working efficiency of replacing the bracket and reduce the labor intensity of workers.

Claims

1. A condensate recovery device for a steam heating system, characterized in that: It includes a water storage tank (4), a high and low liquid level sensor (7) and a steam condensate pipeline (1). The steam condensate pipeline (1) is respectively connected to a water inlet pipeline (3) and a drainage pipeline (12). A main maintenance valve (2) and a bypass flow expansion valve (14) are sequentially installed on the water inlet pipeline (3). The water inlet pipeline (3) is connected to the water storage tank (4). The top of the water storage tank (4) is provided with a sealing cover (18). The outer side wall of the water storage tank (4) is provided with a high and low liquid level sensor (7). The upper part of the water storage tank (4) is connected to a high liquid level overflow drainage pipe (8), and the high liquid level overflow drainage pipe (8) is connected to a first drainage ditch (9). The lower part of the water storage tank (4) is connected to a lowest liquid level drainage pipeline (17). A hot water pump (16) is installed on the lowest liquid level drainage pipeline (17), and the lowest liquid level drainage pipeline (17) is connected to a hot water user end; A maintenance bypass drainage valve (11) is installed on the drainage pipeline (12), and the drainage pipeline (12) is connected to a second drainage ditch (10).

2. The condensate recovery device for the steam heating system according to claim 1, wherein: The water storage tank (4) is filled with steam condensate (15).

3. The condensate recovery device for the steam heating system according to claim 1, characterized in that: An observation hole (5) and a pressure relief pipe (6) are provided on the sealing cover (18).

4. The condensate recovery device for the steam heating system according to claim 1, characterized in that: A pipeline is provided below the bypass flow expansion valve (14). The pipeline is connected to the water inlet pipeline (3), and a steam trap (13) is installed on the pipeline.

5. The condensate recovery device for the steam heating system according to claim 1, characterized in that: The high and low liquid level sensor (7) is connected to the hot water pump (16) through a wire.

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