A condensate water recycling device

Abstract

The application discloses a condensate water recycling device and relates to the technical field of condensate water recycling.The technical scheme is characterized by comprising a condensate water collecting tank, a drainage pipe arranged on the condensate water collecting tank and used for introducing condensate water, a cooling mechanism arranged between the condensate water collecting tank and the drainage pipe and communicating with both, which is used for reducing the temperature of the condensate water introduced into the condensate water collecting tank, and a driving mechanism arranged on the cooling mechanism and used for driving the cooling mechanism.The device can heat exchange the condensate water before the condensate water is introduced into the condensate water collecting tank through the arrangement of the cooling mechanism, so that the situation that the condensate water is flashed and the heat energy is lost due to the low boiling point and the high temperature when the condensate water enters the condensate water collecting tank is avoided.

Description

Technical Field

[0001] This invention relates to the field of condensate water recycling technology, and more specifically to a condensate water recycling device. Background Technology

[0002] In copper smelting plants, to ensure the full utilization of energy during the smelting process, a circulating water and steam pipeline system is usually installed to condense and recover the exhaust gas generated by the steam turbine in the power area, and then reheat it for reuse. During the recovery and reuse of condensate, the condensate will first be collected into the condensate tank for temporary storage. However, since the condensate is in a saturated pressurized state when it is transported in the pipeline, when it enters the tank, it will suddenly change to a larger volume state, causing a sharp drop in pressure and a decrease in boiling point. Then, flash evaporation will occur, causing the liquid to vaporize, resulting in the loss of heat in the water.

[0003] In view of this, a design or technical improvement is proposed to solve the above problems.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a condensate recycling device.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A condensate recycling device includes a condensate collection tank and a drain pipe installed on the condensate collection tank for introducing condensate, and further includes:

[0008] A cooling mechanism is installed between and connected to the condensate collection tank and the drainage pipe to reduce the temperature of the condensate introduced into the condensate collection tank.

[0009] The drive mechanism is mounted on the cooling mechanism and is used to drive the cooling mechanism.

[0010] Furthermore, the cooling mechanism includes a flow pipe with one end connected to a condensate collection tank and the other end connected to a drainage pipe, as well as a heat exchange component mounted on the flow pipe.

[0011] Furthermore, the heat exchange assembly includes an outer sleeve disposed outside the flow tube and forming a hollow cavity between the outer sleeve and the flow tube, and a liquid storage tank communicating with the hollow cavity for storing the heat exchange medium.

[0012] Furthermore, the drive mechanism includes a turbine rotor with bearings installed inside the drain pipe and a centrifugal pump with one end connected to the hollow chamber via a delivery pipe and the other end connected to the liquid storage tank via a suction pipe. The shaft on the turbine rotor is connected to the impeller inside the centrifugal pump.

[0013] Furthermore, the flow passage is also provided with evenly distributed side protrusions that communicate with it. The side protrusions are located on the rear side of the turbine rotor in the direction of liquid flow in the flow passage. The side protrusions are located in the hollow cavity and form a flow cavity for liquid flow between them and the outer sleeve.

[0014] Compared with the prior art, the beneficial effects of this solution are: by setting up a cooling mechanism, this device can exchange heat with the condensate before it is introduced into the condensate collection tank, thus avoiding the situation where the condensate is flashed and loses heat energy when it enters the condensate collection tank due to the lower boiling point and the high temperature.

[0015] This device, through the setting of the drive mechanism, can convert some of the kinetic energy during the transport of condensate, and thus decelerate it during the heat exchange process, thereby improving the heat exchange time and achieving a high-efficiency heat exchange effect.

[0016] Meanwhile, the drive mechanism uses the kinetic energy of the condensate itself to drive the heat exchange components to circulate and exchange heat with the condensate. This reduces the kinetic energy of the condensate, enabling efficient heat exchange and avoiding heat loss due to flash evaporation. It does not require an additional drive source, thus achieving efficient energy utilization. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the cooperation between the heat exchange component and the drive mechanism in this invention;

[0020] Figure 3 This is a side view of the heat exchange components and drive mechanism in this invention;

[0021] Figure 4 This is a side-sectional perspective view of the flow tube and hollow cavity in this invention;

[0022] Figure 5 This is a three-dimensional cross-sectional view of the flow tube and hollow cavity in this invention.

[0023] In the diagram: 1. Condensate collection tank; 11. Drainage pipe; 2. Flow pipe; 21. Hollow chamber; 22. Outer sleeve; 23. Liquid storage tank; 24. Outer pipe; 3. Turbine rotor; 31. Delivery pipe; 32. Suction pipe; 33. Centrifugal pump; 34. Shaft; 4. Side groove; 41. Flow cavity. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] like Figure 1-5 The illustrated condensate recycling device includes a condensate collection tank 1 and a drain pipe 11 installed on the condensate collection tank 1 for introducing condensate. It also includes a cooling mechanism installed between and connected to the condensate collection tank 1 and the drain pipe 11 to reduce the temperature of the condensate introduced into the condensate collection tank 1. A drive mechanism is installed on the cooling mechanism to drive it. Since the condensate is under saturated pressure during transport in the pipe, its pressure drops instantly when it enters the open condensate collection tank 1, leading to a decrease in boiling point. Because the condensate itself is at a high temperature, some water vaporizes when the boiling point decreases, resulting in flash evaporation. This vaporization causes some heat loss. To avoid flash evaporation, the drive mechanism and cooling mechanism are combined. The drive mechanism drives the cooling mechanism to cool the condensate before it enters the condensate collection tank 1, preventing vaporization due to high temperature and avoiding energy loss.

[0026] In one embodiment, the cooling mechanism includes a flow pipe 2 with one end connected to a condensate collection tank 1 and the other end connected to a drain pipe 11, and a heat exchange assembly disposed on the flow pipe 2. The heat exchange assembly includes an outer sleeve 22 disposed outside the flow pipe 2 and forming a hollow cavity 21 between the outer sleeve 2 and the flow pipe 2, and a liquid storage tank 23 connected to the hollow cavity 21 for storing the heat exchange medium. The driving mechanism includes a turbine rotor 3 with bearings disposed inside the drain pipe 11 and a centrifugal pump 33 with one end connected to the hollow cavity 21 via a delivery pipe 31 and the other end connected to the liquid storage tank 23 via a suction pipe 32. The rotating shaft 34 on the turbine rotor 3 is connected to the impeller inside the centrifugal pump 33. The entire system of this device is connected to the condenser through the drain pipe 11 and connected to another set of circulating pipe networks that require the use of a heat source via an external pipe 24 disposed on the outer sleeve 22, thereby operating the system. When condensate is introduced into the condensate collection tank 1, it will first enter the flow pipe 2. Then, the water passes through the turbine rotor 3, which drives the turbine rotor 3 to rotate. During the rotation of the turbine rotor 3, the impeller in the centrifugal pump 33 will rotate synchronously, thereby starting the centrifugal pump 33. The centrifugal pump 33 will then pump the heat exchange medium in the storage tank 23 through the suction pipe 32 and enter the hollow chamber 21 through the delivery pipe 31. The wall of the hollow chamber 21, which is covered by the outer sleeve 22, is made of a material with high thermal conductivity. As the condensate passes through the turbine rotor 3, some of its energy is converted into mechanical energy. The reduction in kinetic energy reduces its transport speed in the flow pipe 2, increases the heat exchange time between the water and the heat exchange medium, and makes the heat exchange process sufficient. As a result, the temperature of the condensate entering the condensate collection tank 1 is reduced to below the vaporization temperature, avoiding heat loss due to vaporization.

[0027] In one embodiment, the flow pipe 2 is also provided with evenly distributed side protrusions 4 communicating with it. The side protrusions 4 are located on the rear side of the turbine rotor 3 in the direction of liquid flow in the flow pipe 2. The side protrusions 4 are located in the hollow cavity 21 and form a flow cavity 41 for liquid flow between the side protrusions 4 and the outer sleeve 22. Since the length of the flow pipe 2 will cause certain pipe loss due to condensation, it is necessary to reduce the length to the maximum extent. However, since reducing the pipe length will affect the heat exchange efficiency between condensation and heat exchange medium, the side protrusions 4 are provided so that when condensation passes through the part provided with the side protrusions 4, it will preferentially expand the cross section, thereby releasing some pressure and greatly increasing the contact area between the outer wall of the flow pipe 2 and the heat exchange medium in this section. This ensures heat exchange efficiency while minimizing the length of the flow pipe 2 and reducing pipe loss.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A condensate recycling device, comprising a condensate collection tank (1) and a drain pipe (11) disposed on the condensate collection tank (1) for introducing condensate, characterized in that, include: A cooling mechanism is installed between and connected to the condensate collection tank (1) and the drain pipe (11) to reduce the temperature of the condensate introduced into the condensate collection tank (1); The drive mechanism, mounted on the cooling mechanism, is used to drive the cooling mechanism; The cooling mechanism includes a flow pipe (2) with one end connected to a condensate collection tank (1) and the other end connected to a drain pipe (11), and a heat exchange assembly installed on the flow pipe (2); The heat exchange assembly includes an outer sleeve (22) disposed outside the flow tube (2) and forming a hollow cavity (21) between the outer sleeve (2) and the flow tube (2), and a liquid storage tank (23) connected to the hollow cavity (21) for storing the heat exchange medium. The drive mechanism includes a turbine rotor (3) with bearings installed in the drain pipe (11) and a centrifugal pump (33) with one end connected to the hollow chamber (21) via the delivery pipe (31) and the other end connected to the liquid storage tank (23) via the suction pipe (32). The shaft (34) on the turbine rotor (3) is connected to the impeller in the centrifugal pump (33), thereby operating the system. When condensate is introduced into the condensate collection tank (1) through the drain pipe (11), the condensate will preferentially enter the flow pipe. (2) Then the water passes through the turbine rotor (3), which drives the turbine rotor (3) to rotate. During the rotation of the turbine rotor (3), the impeller in the centrifugal pump (33) will rotate synchronously, thereby starting the centrifugal pump (33) and making it pump the heat exchange medium in the storage tank (23) through the suction pipe (32) and enter the hollow chamber (21) through the delivery pipe (31). The wall part of the hollow chamber (21) covered by the outer tube (22) is made of a material with high thermal conductivity. The flow pipe (2) is also provided with side protrusions (4) that communicate with it. The side protrusions (4) are located on the rear side of the turbine rotor (3) in the direction of liquid flow in the flow pipe (2). The side protrusions (4) are located in the hollow cavity (21) and form a flow cavity (41) for liquid flow between the side protrusions (4) and the outer sleeve (22).

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