Waste heat recycling device

Abstract

The utility model discloses a waste heat recycling device, relates to the field of recycling and heat exchange, and aims to solve the problems that heat of condensed water cannot be recycled and energy consumption cannot be reduced in the prior art, and adopts the following scheme that the waste heat recycling device comprises a heat exchange device, two groups of pipelines are respectively arranged at two ends of the heat exchange device; the four sets of pipelines are connected with electric valves, the electric valve at the top of one end of the heat exchange device is connected to condensed water through a pipeline, the electric valve at the bottom of the heat exchange device is connected to a deaerator through a pipeline, and the electric valve at the top of the other end of the heat exchange device is connected to the deaerator through a pipeline. The electric valve at the bottom end is connected to condensed water through a pipeline, and the deaerator pipeline connected with the electric valve at one end of the heat exchange device and the deaerator pipeline connected with the electric valve at the other end of the heat exchange device are in a circulating state. The condensation water energy recovery device is novel in structure, and effectively solves the problems that energy recovery cannot be conducted on condensation water, energy consumption is wasted, and efficiency is not high.

Description

Technical Field

[0001] The utility model relates to the field of heat recovery and exchange, in particular to a waste heat recovery and utilization device. Background Art

[0002] The rotary film deaerator is an alternative to the spray packing deaerator and is the latest type of thermal deaerator produced. The principle of the rotary film deaerator is that the feed water is spirally ejected at a certain angle through the membrane tube to exchange heat with the heating steam for deoxygenation. The feed water is heated to the saturation temperature under the working pressure of the deaerator to remove oxygen and other gases dissolved in the feed water, thereby preventing and reducing corrosion of the boiler feed water pipe, economizer and other ancillary equipment.

[0003] The disadvantage of the existing technology is that the inlet water temperature of the deaerator is room temperature. Raising it to 104°C inside the deaerator requires a large amount of steam, and the heat of the condensed water cannot be recovered. In order to increase the temperature of the desalted water entering the deaerator and reduce steam usage, energy conservation and consumption reduction can be achieved. Therefore, in order to optimize the above problems, we propose a waste heat recovery and utilization device. Utility Model Content

[0004] The utility model provides a waste heat recovery and utilization device, which solves the existing problem that the heat of condensed water cannot be recovered, resulting in a large amount of energy consumption and steam usage being wasted.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A waste heat recovery and utilization device includes a heat exchange device, two groups of pipelines are respectively provided at both ends of the heat exchange device, and the four groups of pipelines are all connected to electric valves. The electric valve at the top of one end of the heat exchange device is connected to condensate through a pipeline, and the electric valve at the bottom is connected to a deaerator through a pipeline. The top electric valve at the other end of the heat exchange device is connected to the deaerator through a pipeline, and the electric valve at the bottom is connected to condensate through a pipeline. The deaerator pipeline connected to the electric valve at one end of the heat exchange device and the deaerator pipeline connected to the electric valve at the other end are in a circulation state, and the condensate pipeline connected to the electric valve at one end of the heat exchange device and the condensate pipeline connected to the electric valve at the other end are also in a circulation state.

[0007] As an optimal technical solution of the present invention, the heat exchange device includes a condensate transmission pipe, and five groups of holes are provided at both ends of the condensate transmission pipe. Three of the five groups of holes are connected to pipelines, and the remaining two groups are connected to water inlet pipes. The water inlet pipe is two water pipes merged into one, and is connected to an electric valve after the merger. The three groups of pipelines are respectively connected to electric valves, and the electric valve at one end is arranged horizontally. A desalted water transmission pipe is provided inside the condensate transmission pipe, and a stirring mechanism is provided inside the desalted water transmission pipe.

[0008] As an optimal technical solution of the present invention, a support frame is provided at the bottom end of the condensate transmission pipe, and brackets are evenly arranged at the bottom end of the support frame. The brackets are centrally symmetrically arranged at both ends of the support frame, and there are six groups in total.

[0009] As an optimal technical solution of the present invention, the stirring mechanism includes a motor, which is arranged at one end of the interior of the condensate water transmission pipe, and a fixed plate is provided on the outside of the motor. The shaft of the motor is fixedly connected to the transmission shaft, and the surface of the transmission shaft is provided with stirring rods, and the stirring rods are staggered, first longitudinally and then transversely. The other end of the transmission shaft is rotatably connected to a bearing, and the outside of the bearing is connected to a fixed frame, and the top of the fixed frame is fixedly connected to the inner top of the desalted water transmission pipe.

[0010] As an optimal technical solution of the present invention, the water inlet pipes are combined into one water pipe and then connected to a pipeline, and a support frame is sheathed on the outside of this group of pipelines, and the bottom end of the support frame is flush with the bottom end of the bracket.

[0011] The beneficial effects of the utility model are:

[0012] 1. The device is equipped with a condensate transmission pipe inside, and a desalted water transmission pipe inside the condensate transmission pipe. After the liquid is sucked into the two sets of transmission pipes through the operation of the electric valve, heat exchange can be carried out, thereby reducing energy consumption.

[0013] 2. A motor is installed inside the device. Through the operation of the motor, the liquid inside the desalted water transmission pipe is stirred, so that the liquid can fully exchange heat with the liquid inside the condensate water transmission pipe, thereby improving efficiency and increasing the temperature of the desalted water entering the deaerator.

[0014] In summary, this device effectively solves the problem of being unable to recover the heat of condensed water and reduces energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a top cross-sectional view of the utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the utility model;

[0018] Figure 4 It is a side sectional view of the utility model;

[0019] Figure 5 This is a schematic diagram of the stirring mechanism of the present utility model;

[0020] Figure 6This is a block diagram of the heat exchange principle of the present utility model.

[0021] Numbers in the figure: 1. Condensate transmission pipe; 2. Electric valve; 3. Pipeline; 4. Support frame; 5. Water inlet pipe; 6. Bracket; 7. Support frame; 8. Desalted water transmission pipe; 9. Fixing plate; 10. Motor; 11. Drive shaft; 12. Stirring rod; 13. Bearing; 14. Fixing frame. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Reference Figures 1-6 , a waste heat recovery and utilization device includes a heat exchange device, two groups of pipelines 3 are respectively provided at both ends of the heat exchange device, and the four groups of pipelines 3 are all connected to electric valves 2. The electric valve 2 at the top of one end of the heat exchange device is connected to the condensate through the pipeline 3, and the electric valve 2 at the bottom is connected to the deaerator through the pipeline 3. The top electric valve 2 at the other end of the heat exchange device is connected to the deaerator through the pipeline 3, and the electric valve 2 at the bottom is connected to the condensate through the pipeline 3. The deaerator pipeline 3 connected by the electric valve 2 at one end of the heat exchange device and the deaerator pipeline 3 connected by the electric valve 2 at the other end are in a circulation state, and the condensate pipeline 3 connected by the electric valve 2 at one end of the heat exchange device and the condensate pipeline 3 connected by the electric valve 2 at the other end are also in a circulation state, and the condensate pipeline 3 and the deaerator pipeline 3 circulate independently and are not mixed.

[0024] The heat exchange device includes a condensate transmission pipe 1, which has five groups of holes at both ends of the condensate transmission pipe 1. Three of the five groups of holes are connected to pipelines 3, and the remaining two groups are connected to a water inlet pipe 5. The water inlet pipe 5 is formed by merging two water pipes into one and connected to an electric valve 2 after the merger. The three groups of pipelines 3 are respectively connected to the electric valve 2, and the electric valve 2 at one end is arranged horizontally. A desalted water transmission pipe 8 is provided inside the condensate transmission pipe 1, and a stirring mechanism is provided inside the desalted water transmission pipe 8. The water inlet pipe 5 is connected to the pipeline 3 after being merged into one water pipe, and the outside of this group of pipelines 3 is covered with a support frame 4, and the bottom end of the support frame 4 is flush with the bottom end of the bracket 6. The bottom end of the condensate transmission pipe 1 is provided with a support frame 7, and the bottom end of the support frame 7 is evenly provided with brackets 6. The brackets 6 are arranged symmetrically with the support frame 7 at both ends, and there are six groups in total, and the brackets 6 are nearly L-shaped, with the short end connected to the support frame 7 and the long end being the supporting part.

[0025] The stirring mechanism includes a motor 10, which is arranged at one end of the interior of the condensate water transmission pipe 1, and a fixed plate 9 is provided on the outside of the motor 10. The shaft of the motor 10 is fixedly connected to the transmission shaft 11, and a stirring rod 12 is provided on the surface of the transmission shaft 11, and the stirring rod 12 is staggered, first longitudinally and then transversely. The other end of the transmission shaft 11 is rotatably connected to a bearing 13, and the outside of the bearing 13 is connected to a fixing frame 14, and the top of the fixing frame 14 is fixedly connected to the inner top of the desalted water transmission pipe 8. The motor 10 is waterproof, and the motor 10 is fixed at one end of the interior of the condensate water transmission pipe 1, and the fixed plate 9 also fixes the inner end of the condensate water transmission pipe 1.

[0026] Working principle: After placing the device at the designated position, connect the electric valve 2 at one end of the combined water inlet pipe 5 of the device to the desalted water pipe, and connect the electric valve 2 at the top to the condensate water pipe, connect the electric valve 2 at one end of the top pipe 3 at the other end of the device back to the desalted water pipe, and connect the electric valve 2 at one end of the bottom pipe 3 back to the condensate water pipe. After the electric valve 2 is opened by remote control, the desalted water will flow into the desalted water transmission pipe 8 through the pipe 3, and the condensate will flow into the condensate transmission pipe 1 through the pipe 3. Then the motor 10 will start to run and drive the transmission shaft 11 and the stirring rod 12 on the surface of the transmission shaft 11 to rotate. When it is stirring, the desalted water inside will fully exchange heat with the condensate. After the heat exchange is completed, it will be discharged from the electric valve 2 at the other end. After use, it will be sucked back into the condensate transmission pipe 1 and the desalted water transmission pipe 8 through the electric valve 2 again.

[0027] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A waste heat recovery and utilization device, comprising a heat exchange device, characterized in that: Two groups of pipelines (3) are respectively provided at both ends of the heat exchange device, and the four groups of pipelines (3) are all connected to electric valves (2). The electric valve (2) at the top of one end of the heat exchange device is connected to the condensate through the pipeline (3), and the electric valve (2) at the bottom is connected to the deaerator through the pipeline (3). The electric valve (2) at the top of the other end of the heat exchange device is connected to the deaerator through the pipeline (3), and the electric valve (2) at the bottom is connected to the condensate through the pipeline (3). The deaerator pipeline (3) connected to the electric valve (2) at one end of the heat exchange device and the deaerator pipeline (3) connected to the electric valve (2) at the other end are in a circulation state, and the condensate pipeline (3) connected to the electric valve (2) at one end of the heat exchange device and the condensate pipeline (3) connected to the electric valve (2) at the other end are also in a circulation state.

2. The waste heat recovery device according to claim 1, characterized in that: The heat exchange device comprises a condensate water transmission pipe (1), and five groups of holes are provided at both ends of the condensate water transmission pipe (1). Three of the five groups of holes are connected to pipelines (3), and the remaining two groups are connected to a water inlet pipe (5). The water inlet pipe (5) is formed by merging two water pipes into one, and is connected to an electric valve (2) after the merging. The three groups of pipelines (3) are respectively connected to the electric valve (2), and the electric valve (2) at one end is arranged horizontally. A desalted water transmission pipe (8) is provided inside the condensate water transmission pipe (1), and a stirring mechanism is provided inside the desalted water transmission pipe (8).

3. The waste heat recovery device according to claim 2, characterized in that: The bottom end of the condensate transmission pipe (1) is provided with a support frame (7), and the bottom end of the support frame (7) is evenly provided with brackets (6), and the brackets (6) are centrally symmetrically arranged at both ends of the support frame (7), and a total of six groups are provided.

4. The waste heat recovery device according to claim 2, characterized in that: The stirring mechanism comprises a motor (10), the motor (10) being arranged at one end inside the condensate water transmission pipe (1), and a fixing plate (9) being provided outside the motor (10), the shaft of the motor (10) being fixedly connected to a transmission shaft (11), the surface of the transmission shaft (11) being provided with stirring rods (12), and the stirring rods (12) being staggered, first longitudinally and then transversely, the other end of the transmission shaft (11) being rotatably connected to a bearing (13), the outside of the bearing (13) being connected to a fixing frame (14), and the top end of the fixing frame (14) being fixedly connected to the top end inside the desalted water transmission pipe (8).

5. The waste heat recovery device according to claim 2, characterized in that: The water inlet pipes (5) are combined into one water pipe and connected to a pipeline (3), and the pipeline (3) is covered with a support frame (4) on the outside, and the bottom end of the support frame (4) is flush with the bottom end of the bracket (6).

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