A steam heat energy recovery system

Abstract

This utility model discloses a steam heat energy recovery system, including a flash high-pressure tank and a heat exchanger. The flash high-pressure tank has a water inlet pipe at the top and a condensate tank on one side. The bottom of the flash high-pressure tank and the condensate tank are connected by a delivery pipe. The heat exchanger is located on one side of the condensate tank and is connected to the condensate tank through two sets of water delivery pipes. The top of the flash high-pressure tank is connected to the heat exchanger through a steam pipe, and a steam valve is installed on the steam pipe. A water tank is located on one side of the condensate tank, and the bottom of the water tank is connected to the heat exchanger through a water pipe. By recovering the steam condensate and reusing its heat, the waste of the heat energy contained in the condensate after steam use is reduced. After the steam releases heat energy and condenses into water, the heat contained in it is collected again and used to heat other media. The heat that would have been directly discharged is reused, which improves the overall energy utilization efficiency and reduces the energy consumption and production costs of enterprises.

Description

Technical Field

[0001] This utility model belongs to the field of steam heat energy recovery technology, and specifically relates to a steam heat energy recovery system. Background Technology

[0002] In the industrial production sector, steam is widely used as a highly efficient heat carrier. After releasing heat energy, steam condenses into water. If the large amount of heat energy contained in the steam is not recovered and utilized, it will not only cause a huge waste of energy, but also increase the production costs of enterprises. Therefore, in order to avoid the waste of heat energy in steam, the steam condensate can be recovered and the heat in it can be reused, or the condensate can be treated and recycled, thereby improving the energy utilization rate to a certain extent.

[0003] When existing steam heat recovery pipelines are started up, the temperature of the pipeline rises sharply as steam enters the pipeline rapidly. Due to differences in the materials and structures of different parts of the pipeline, the expansion rates of different parts are inconsistent, which can easily generate thermal stress. The long-term accumulation of thermal stress can lead to cracks, deformation, and even leakage in the pipeline, which seriously affects the safe and stable operation of the system. Once the pipeline fails, it will not only cause steam leakage and energy loss, but may also cause safety accidents and threaten the lives of operators. Utility Model Content

[0004] The purpose of this invention is to provide a steam heat energy recovery system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a steam heat energy recovery system, comprising:

[0006] A flash evaporation high-pressure tank, wherein a water inlet pipe is provided at the top of the flash evaporation high-pressure tank and a condensate tank is provided on one side of the flash evaporation high-pressure tank, and the bottom of the flash evaporation high-pressure tank and the condensate tank are connected by a delivery pipe;

[0007] The heat exchanger is located on one side of the condensate tank and is connected to the condensate tank through two sets of water supply pipes. The top of the flash high-pressure tank is connected to the heat exchanger through a steam pipe and a steam valve is provided on the steam pipe. By adjusting the opening of the steam valve, a small amount of steam is first introduced into the steam pipe for warm-up operation.

[0008] Preferably, the delivery pipe is equipped with a condensate pump.

[0009] Preferably, the condensate tank has a water tank on one side and the bottom of the water tank is connected to the heat exchanger through a water pipe, and a water pump is installed on the water pipe.

[0010] Preferably, the water tank is equipped with a water supply pipe for replenishing tap water.

[0011] Preferably, the bottom of the condensate tank is connected to a high-temperature water storage tank via a bend, and control valves are provided on the delivery pipe, the water supply pipe, and the bend.

[0012] Preferably, the high-temperature water storage tank is provided with a sampling pipe on one side and a drain pipe on the other side.

[0013] Preferably, both the flash high-pressure tank and the high-temperature water storage tank are equipped with level gauges.

[0014] Preferably, the flash high-pressure tank is equipped with a safety valve and a pressure gauge on its top.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) By recovering and reusing the heat of steam condensate, the waste of heat energy contained in the condensate after steam is used is reduced. After steam releases heat energy and condenses into water, the heat contained in it is collected again and used to heat other media. The heat that would have been directly discharged is reused, thereby improving the overall energy utilization efficiency and reducing the energy consumption and production costs of enterprises.

[0017] (2) By slowly opening the steam valve on the steam pipe and introducing a small amount of steam at a small opening to warm up the pipe, the thermal stress caused by the rapid temperature rise of the steam pipe and the inconsistent expansion rate of the materials and structures of each part can be effectively avoided. By warming up the steam pipe, the generation of thermal stress can be fundamentally reduced, ensuring the safe and stable operation of the steam pipe system.

[0018] (3) The level gauges installed on the flash high pressure tank and the high temperature water storage tank can monitor the liquid level in the tank in real time, which makes it easy for operators to grasp the liquid storage in the tank and make timely adjustments and operations. The safety valve and pressure gauge on the top of the flash high pressure tank can monitor and control the pressure in the tank. When the pressure exceeds the safety threshold, the safety valve will automatically open to release pressure and ensure the safety of the equipment. Attached Figure Description

[0019] Figure 1 This is a process flow diagram of the present invention.

[0020] In the diagram: 1. Flash high-pressure tank; 2. Condensate tank; 3. Delivery pipe; 4. Heat exchanger; 5. Water supply pipe; 6. Steam pipe; 7. Steam valve; 8. Condensate pump; 9. Water tank; 10. Water pipe; 11. Water pump; 12. Make-up water pipe; 13. Bend; 14. High-temperature water storage tank; 15. Control valve; 16. Sampling pipe; 17. Drain pipe; 18. Level gauge; 19. Inlet pipe; 20. Safety valve; 21. Pressure gauge. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides, for example Figure 1 The steam heat recovery system shown includes:

[0023] Flash evaporation high pressure tank 1, the top of the flash evaporation high pressure tank 1 is provided with a water inlet pipe 19 and a condensate tank 2 is provided on one side of the flash evaporation high pressure tank 1, and the bottom of the flash evaporation high pressure tank 1 and the condensate tank 2 are connected by a conveying pipe 3.

[0024] Heat exchanger 4 is located on one side of condensate tank 2 and is connected to condensate tank 2 through two sets of water supply pipes 5. The top of flash high pressure tank 1 is connected to heat exchanger 4 through steam pipe 6 and steam valve 7 is provided on steam pipe 6. By adjusting the opening of steam valve 7, a small amount of steam is first introduced into steam pipe 6 for pipe warming operation.

[0025] The conveying pipe 3 is equipped with a condensate pump 8, which can transport the condensate in the flash high-pressure tank 1 to the condensate tank 2.

[0026] The condensate tank 2 has a water tank 9 on one side, and the bottom of the water tank 9 is connected to the heat exchanger 4 through a water pipe 10. A water pump 11 is installed on the water pipe 10.

[0027] The water tank 9 is equipped with a water supply pipe 12 for replenishing tap water. When the water level in the water tank 9 drops or the water quality needs to be adjusted, tap water can be replenished through the water supply pipe 12 to maintain the water quantity and water quality balance of the system.

[0028] The bottom of the condensate tank 2 is connected to a high-temperature water storage tank 14 via a bend 13. Control valves 15 are provided on the delivery pipe 3, the water supply pipe 12, and the bend 13.

[0029] The high-temperature water storage tank 14 is provided with a sampling pipe 16 on one side and a drain pipe 17 on the other side.

[0030] Both the flash high-pressure tank 1 and the high-temperature water storage tank 14 are equipped with level gauges 18. These level gauges 18 are used to monitor the liquid level in the tanks. Operators can adjust the system's operating parameters in a timely manner based on the values ​​displayed by the level gauges 18, such as controlling the working status of the condensate pump 8 and the water pump 11, and adjusting the pipeline flow through the control valve 15, to ensure the normal operation of the system.

[0031] The top of the flash high-pressure tank 1 is equipped with a safety valve 20 and a pressure gauge 21. The pressure gauge 21 monitors the pressure inside the flash high-pressure tank 1 in real time. When the pressure exceeds the set safety value, the safety valve 20 automatically opens to release the pressure inside the tank and prevent the tank from being dangerous due to excessive pressure.

[0032] This steam heat recovery system uses steam carrying a large amount of heat energy to enter the production process. After use, the steam condenses into water and flows into the flash high-pressure tank 1 through the inlet pipe 19. The bottom of the flash high-pressure tank 1 is connected to the condensate tank 2 via the delivery pipe 3. Under the action of the condensate pump 8, the condensate in the flash high-pressure tank 1 is transported to the condensate tank 2. The top of the flash high-pressure tank 1 is connected to the heat exchanger 4 via the steam pipe 6. The steam pipe 6 is equipped with a steam valve 7. During the warm-up operation, the steam valve 7 is slowly opened to allow a small amount of steam to enter the steam pipe 6 to warm up the pipe. The warm-up time is determined according to factors such as the pipe length and diameter, and is generally 10 to 15 minutes. The purpose is to avoid damage to the pipe due to thermal stress caused by rapid temperature rise. After the warm-up is completed, an appropriate amount of steam enters the heat exchanger 4 through the steam pipe 6. At the same time, the water in the water tank 9 on one side of the condensate tank 2 is pumped by the water pump 11. The water enters the heat exchanger 4, where it absorbs heat from the steam transferred to the condensate, causing its temperature to rise. The heated water is then transported to the condensate tank 2 via the water supply pipe 5. The bottom of the condensate tank 2 is connected to the high-temperature water storage tank 14 via a bend pipe 13. The high-temperature condensate heated by the heat exchanger 4, along with some condensate that has not been fully heated, flows into the high-temperature water storage tank 14 through the bend pipe 13 for storage. A sampling pipe 16 is provided on one side of the high-temperature water storage tank 14 to periodically sample and test the water quality to determine if it meets the usage standards. A drain pipe 17 is provided on the other side, allowing the high-temperature water in the high-temperature water storage tank 14 to be drained when needed. Control valves 15 are provided on the delivery pipe 3, the water supply pipe 12, and the bend pipe 13. These control valves 15 can precisely control the flow rate and direction of the medium in the pipes according to the system's operating conditions, ensuring the coordinated and stable operation of all parts of the system.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A steam heat energy recovery system, characterized by, include: A flash high-pressure tank (1) is provided with a water inlet pipe (19) at the top and a condensate tank (2) on one side of the flash high-pressure tank (1). The bottom of the flash high-pressure tank (1) and the condensate tank (2) are connected by a conveying pipe (3). The heat exchanger (4) is located on one side of the condensate tank (2) and is connected to the condensate tank (2) through two sets of water supply pipes (5). The top of the flash high pressure tank (1) is connected to the heat exchanger (4) through a steam pipe (6) and a steam valve (7) is provided on the steam pipe (6). By adjusting the opening of the steam valve (7), a small amount of steam is first introduced into the steam pipe (6) for pipe warming operation.

2. A vapour heat energy recovery system as claimed in claim 1, characterised in that: A condensate pump (8) is installed on the delivery pipe (3).

3. A steam heat energy recovery system according to claim 1, wherein: The condensate tank (2) has a water tank (9) on one side and the bottom of the water tank (9) is connected to the heat exchanger (4) through a water pipe (10). A water pump (11) is provided on the water pipe (10).

4. A vapour heat energy recovery system as claimed in claim 3, wherein: The water tank (9) is equipped with a water supply pipe (12) for replenishing tap water.

5. A vapour heat energy recovery system as claimed in claim 4, wherein: The bottom of the condensate tank (2) is connected to a high-temperature water storage tank (14) via a bend (13). Control valves (15) are provided on the delivery pipe (3), the water supply pipe (12), and the bend (13).

6. A vapour heat energy recovery system as claimed in claim 5, wherein: The high-temperature water storage tank (14) is equipped with a sampling pipe (16) on one side and a drain pipe (17) on the other side.

7. A steam heat energy recovery system according to claim 5, wherein: Both the flash high-pressure tank (1) and the high-temperature water storage tank (14) are equipped with level gauges (18).

8. A steam heat energy recovery system according to claim 1, wherein: The flash high-pressure tank (1) is equipped with a safety valve (20) and a pressure gauge (21) on its top.

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