Steam exhaust recovery economizer

Abstract

The utility model discloses a kind of exhausted steam recovery energy saver, it is related to energy saver technical field, including vapor-liquid separation tank, the front side outer wall of vapor-liquid separation tank is symmetrically provided with two groups of branch pipe, the upper end of two groups The power head of branch pipe is all provided with two groups, the rear side side wall of four groups The exhausted steam inlet pipe of power head is all provided with a group, the upper end of four groups The water inlet pipe of power head is all provided with a group, four groups The water inlet pipe is all the shape of bending downwards, the lower end outer wall of four groups The safety valve of water inlet pipe is all provided with two groups, the safety valve of the outer wall of each group The oxygen remover of water inlet pipe is all provided with a group between two groups, the lower end side wall of each group The water inlet branch pipe of water inlet pipe is still provided with a group, the both ends of water inlet branch pipe It is communicated with the inside of water inlet pipe, the middle of water inlet branch pipe Still be provided with switch valve. A kind of exhausted steam recovery energy saver of the utility model, utilize four groups of exhausted steam air inlet pipe, greatly improve the efficiency of exhausted steam recovery.

Description

Technical Field

[0001] This utility model relates to the field of energy-saving device technology, and in particular to a waste steam recovery energy-saving device. Background Technology

[0002] A waste steam recovery energy saver is a device that uses heat exchange, condensation recovery and other technologies to recover and reuse waste steam that would otherwise be directly emitted into the atmosphere. Through heat exchangers (such as shell and tube or plate heat exchangers), the heat of the waste steam is transferred to cold water (or other media that need to be heated), so that the cold water can be heated and used for boiler feedwater, process heat or domestic hot water. If the waste steam contains few impurities, the condensed water can also be directly reused in the system. It is widely used in industries with large steam consumption such as thermal power, chemical, textile and papermaking, and is one of the important equipment for industrial energy conservation and consumption reduction.

[0003] Existing waste steam recovery energy savers typically have only one set of waste steam inlet pipes, and the equipment can only connect to one set of pipes at a time, resulting in low waste steam recovery efficiency. Furthermore, the coordination between the waste steam pipe and the water inlet pipe is relatively complicated, affecting the operation of waste steam recovery. In order to overcome the shortcomings of existing technologies, we propose a waste steam recovery energy saver. Utility Model Content

[0004] The main objective of this invention is to provide a waste steam recovery energy-saving device that can effectively solve the problems in the background technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A waste steam recovery energy-saving device includes a vapor-liquid separator. Two sets of branch pipes are symmetrically arranged on the front outer wall of the vapor-liquid separator. Two sets of power heads are installed at the upper ends of each of the two sets of branch pipes. A waste steam inlet pipe is installed on the rear side wall of each of the four sets of power heads. A water inlet pipe is installed at the upper end of each of the four sets of power heads. All four sets of water inlet pipes are bent downwards. Two sets of safety valves are installed on the lower outer wall of each of the four sets of water inlet pipes. A deaerator is installed between the two sets of safety valves on the outer wall of each set of water inlet pipes. A water inlet branch pipe is also installed on the lower side wall of each set of water inlet pipes. Both ends of the water inlet branch pipe are connected to the interior of the water inlet pipe. A switch valve is installed in the middle of the water inlet branch pipe.

[0006] The lower end of the gas-liquid separator is provided with a discharge pipe. A set of discharge branch pipes is provided on both sides of the end of the discharge pipe. A set of control valves is provided on the outer wall of each set of discharge branch pipes. A mounting base is provided at the end of each set of discharge branch pipes. A set of water pumps is provided at the upper end of each mounting base. A connecting pipe is provided at the upper front side of each mounting base. The ends of the two sets of discharge branch pipes are connected to the side wall of the connecting pipe. A sewage pipe is provided between the upper ends of the two sets of connecting pipes. A sewage outlet is provided on the middle outer side wall of the sewage pipe.

[0007] Preferably, the front outer wall of the gas-liquid separator is provided with a first water outlet pipe, and the front outer wall of the discharge pipe is provided with a second water outlet pipe. The lower end of the first water outlet pipe is connected to the upper outer wall of the second water outlet pipe, and the upper end of the second water outlet pipe is provided with a switch valve behind the first water outlet pipe.

[0008] Preferably, the upper end of the vapor-liquid separator is provided with a gas phase outlet, and the interior of the vapor-liquid separator is provided with a baffle plate, a demister and a cyclone separator core.

[0009] Preferably, the upper end of the deaerator is equipped with an exhaust check valve, and the interior of the deaerator is also equipped with a waste steam heat recovery box and a heat exchanger.

[0010] Preferably, both sides of the sewage pipe are equipped with switch valves.

[0011] Preferably, the lower end of the gas-liquid separator is provided with four sets of support frames.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. In this utility model, the four sets of water inlet pipes and the exhaust steam inlet pipe can be connected to multiple sets of equipment at the same time to recover exhaust steam. Compared with traditional exhaust steam recovery equipment, the exhaust steam recovery efficiency of this utility model is higher, which greatly improves the efficiency of exhaust steam recovery and heat energy recovery and utilization.

[0013] 2. In this utility model, the inlet branch pipe and safety valve can improve the working effect of the deaerator and prevent the deaerator from being affected by gas backflow. By controlling the opening and closing of the safety valve and the switch valve, the deaerator can operate in one direction to avoid being affected by gas or liquid backflow, making the device safer to use and preventing damage. In addition, the two sets of discharge branch pipes and water pumps of the discharge pipe branch can achieve alternating operation or dual water supply. In case of single-path failure, switch to the other path to ensure continuous water supply. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the rear structure of this utility model; Figure 3 This is a utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0015] In the diagram: 1. Vapor-liquid separator; 2. Support frame; 3. Branch pipe; 4. Power head; 5. Exhaust steam inlet pipe; 6. Water inlet pipe; 7. Discharge pipe; 8. First water outlet pipe; 9. Second water outlet pipe; 10. Discharge branch pipe; 11. Control valve; 12. Mounting base; 13. Connecting pipe; 14. Water pump; 15. Sewage pipe; 16. Sewage outlet; 17. Safety valve; 18. Deaerator; 19. Water inlet branch pipe; 20. Switch valve. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] like Figures 1-3 As shown, a waste steam recovery energy-saving device includes a vapor-liquid separator 1, which is used for vapor-liquid separation. The upper end of the vapor-liquid separator 1 has a gas phase outlet. The interior of the vapor-liquid separator 1 is equipped with baffles, a demister, and a cyclone separator core. Four sets of support frames 2 are provided at the lower end of the vapor-liquid separator 1 to support and fix it. Two sets of branch pipes 3 are symmetrically arranged on the front outer wall of the vapor-liquid separator 1. Two sets of power heads 4 are provided at the upper end of each of the two sets of branch pipes 3 to provide power for the flow of liquid or gas. A waste steam inlet pipe 5 is provided on the rear side wall of each of the four sets of power heads 4. Waste steam enters through the waste steam inlet pipe 5 and then enters the interior of the vapor-liquid separator 1 through the branch pipes 3. A water inlet pipe 6 is provided at the upper end of each of the four sets of power heads 4, through which water flows. 6. The water inlet pipes enter and heat exchange and heat up. All four sets of water inlet pipes 6 are bent downwards. Two sets of safety valves 17 are installed on the lower outer wall of each of the four sets of water inlet pipes 6. A deaerator 18 is installed between the two sets of safety valves 17 on the outer wall of each set of water inlet pipes 6. The two sets of safety valves 17 are used to control the opening and closing of the two sides of the deaerator 18. An exhaust check valve is installed at the upper end of the deaerator 18. The deaerator 18 also has a waste steam heat recovery box and a heat exchanger inside. A water inlet branch pipe 19 is also installed on the lower side wall of each set of water inlet pipes 6. Both ends of the water inlet branch pipe 19 are connected to the inside of the water inlet pipe 6. When the two sets of safety valves 17 are closed, the water inlet branch pipe 19 can be used to enter or exit water. A switch valve 20 is also installed in the middle of the water inlet branch pipe 19. The switch valve 20 is used to control the opening and closing of the water inlet branch pipe 19. A discharge pipe 7 is provided at the lower end of the gas-liquid separator 1. A set of discharge branch pipes 10 is provided on both sides of the end of the discharge pipe 7. A control valve 11 is provided on the outer wall of each set of discharge branch pipes 10. The control valve 11 is used to control the opening and closing of the discharge branch pipes 10. A mounting base 12 is provided at the end of each set of discharge branch pipes 10. A water pump 14 is provided at the upper end of each mounting base 12. The mounting base 12 is used to install and fix the water pump 14, which provides power for the water flow inside the discharge pipe 7 and the discharge branch pipes 10. A connecting pipe 13 is provided at the upper front side of each mounting base 12. The ends of both sets of discharge branch pipes 10 are connected to the side wall of the connecting pipe 13. A set of sewage pipes 15 is provided between the upper ends of 13. Sewage pipes 15 are used to discharge sewage. Both sides of the sewage pipe 15 are equipped with switch valves. The middle outer side wall of the sewage pipe 15 is equipped with a sewage outlet 16. The sewage outlet 16 is used to connect with sewage recovery equipment. The front outer wall of the gas-liquid separator 1 is equipped with a first water outlet pipe 8. The front outer wall of the discharge pipe 7 is equipped with a second water outlet pipe 9. The lower end of the first water outlet pipe 8 is connected to the upper outer wall of the second water outlet pipe 9. The first water outlet pipe 8 and the second water outlet pipe 9 are used to discharge the water after heat exchange. The upper end of the second water outlet pipe 9 is equipped with a switch valve behind the first water outlet pipe 8 to control the opening and closing of the second water outlet pipe 9.

[0018] It should be noted that this utility model is a waste steam recovery energy-saving device. In use, open the switch valve 20 of the inlet pipe 6 to inject cold water into the system through the inlet branch pipe 19 until water flows out of the first outlet pipe 8. Close the switch valve 20, open the exhaust check valve of the deaerator 18, start the four sets of power heads 4, and slowly open the valve of the waste steam inlet pipe 5 to connect the waste steam to the system. Initially, maintain low flow rate operation, observe the pressure gauge to ensure stable system pressure, and monitor the exhaust status of the deaerator 18 in real time. If the exhaust volume is too large, adjust it appropriately. Exhaust steam inlet valve; if the inlet water temperature does not reach the expected level, increase the exhaust steam input and enhance heat exchange through the heat exchanger. Check the status of control valve 11 of discharge pipe 7 and discharge branch pipe 10. The dual water pumps 14 operate alternately to avoid long-term operation of a single pump leading to losses. Adjust the water supply through the on / off valves of the first outlet pipe 8 and the second outlet pipe 9 to meet the water demand of the downstream. When shutting down, first close the valve of exhaust steam inlet pipe 5, then close the power head 4. After the system pressure drops to 0MPa, open the drain valve to drain the water in the pipeline.

[0019] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A waste steam recovery energy-saving device, comprising a vapor-liquid separator (1), characterized in that: The front outer wall of the gas-liquid separator (1) is symmetrically provided with two sets of branch pipes (3). The upper end of each of the two sets of branch pipes (3) is provided with two sets of power heads (4). The rear side wall of each of the four sets of power heads (4) is provided with a set of exhaust steam inlet pipes (5). The upper end of each of the four sets of power heads (4) is provided with a set of water inlet pipes (6). The four sets of water inlet pipes (6) are all bent downwards. The lower outer wall of each of the four sets of water inlet pipes (6) is provided with two sets of safety valves (17). A deaerator (18) is provided between the two sets of safety valves (17) on the outer wall of each set of water inlet pipes (6). The lower side wall of each set of water inlet pipes (6) is also provided with a set of water inlet branch pipes (19). Both ends of the water inlet branch pipes (19) are connected to the inside of the water inlet pipes (6). A switch valve (20) is also provided in the middle of 19); a discharge pipe (7) is provided at the lower end of the gas-liquid separator (1), a set of discharge branch pipes (10) is provided on both sides of the end of the discharge pipe (7), a set of control valves (11) is provided on the outer wall of the two sets of discharge branch pipes (10), a mounting base (12) is provided at the end of the two sets of discharge branch pipes (10), a set of water pumps (14) is provided at the upper end of the mounting base (12), a connecting pipe (13) is provided at the upper front side of the mounting base (12), the ends of the two sets of discharge branch pipes (10) are connected to the side wall of the connecting pipe (13), a set of sewage pipes (15) is provided between the upper ends of the two sets of connecting pipes (13), and a sewage outlet (16) is provided on the middle outer side wall of the sewage pipe (15).

2. The waste steam recovery energy-saving device according to claim 1, characterized in that: The front outer wall of the gas-liquid separator (1) is provided with a first water outlet pipe (8), and the front outer wall of the discharge pipe (7) is provided with a second water outlet pipe (9). The lower end of the first water outlet pipe (8) is connected to the upper outer wall of the second water outlet pipe (9), and the upper end of the second water outlet pipe (9) is provided with a switch valve behind the first water outlet pipe (8).

3. The waste steam recovery energy-saving device according to claim 1, characterized in that: The upper end of the vapor-liquid separator (1) is provided with a gas phase outlet, and the interior of the vapor-liquid separator (1) is provided with a baffle plate, a demister and a cyclone separator core.

4. The waste steam recovery energy-saving device according to claim 1, characterized in that: The upper end of the deaerator (18) is equipped with an exhaust check valve, and the interior of the deaerator (18) is also equipped with a waste steam heat recovery box and a heat exchanger.

5. The waste steam recovery energy-saving device according to claim 1, characterized in that: Both sides of the drain pipe (15) are equipped with switch valves.

6. The waste steam recovery energy-saving device according to claim 1, characterized in that: The lower end of the vapor-liquid separator (1) is provided with four sets of support frames (2).

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