Waste heat recycling device utilizing industrial steam condensate water

Abstract

The utility model relates to a waste heat recycling device utilizing industrial steam condensate water, which comprises a cooling water tank and a plurality of heat exchange group plates, the plurality of heat exchange group plates are installed along the length direction of the cooling water tank in an interception mode, vertical medium flow channels are arranged in the heat exchange group plates, and the upper ends and the lower ends of the heat exchange group plates are exposed outside the cooling water tank. Flow channel openings communicated with the medium flow channels are formed in the upper ends and the lower ends of the heat exchange group plates, and every two adjacent heat exchange group plates are connected through bent pipes installed at the flow channel openings; and each heat exchange group plate is provided with a through hole which is vertical to the medium flow channel and is not communicated with the medium flow channel. The effect of multiple times of heat exchange in cooling water is achieved. The communicating pipes are installed on the heat exchange assembly plates to form the through holes penetrating through the heat exchange assembly plates, the blocking effect of the heat exchange assembly plates on cooling water flow is reduced, the flowability of cooling water is enhanced, a high-temperature area in the cooling water is eliminated, the contact area is increased in cooperation with the communicating pipes, and therefore the heat exchange efficiency is improved, and recovery of waste heat of condensate water is achieved.

Description

Technical Field

[0001] This utility model relates to the field of condensate waste heat recovery, and in particular to a waste heat recovery and reuse device that utilizes industrial steam condensate. Background Technology

[0002] The condensate formed from industrial steam after heat exchange or cooling still has a high temperature, reaching over 70°C. Directly discharging the condensate would result in significant heat loss, therefore, it is necessary to recover the waste heat from the condensate.

[0003] Heat exchange can take many forms, with heat exchange plates being a common one. A heat exchange plate has a thermally conductive metal body, with internal medium flow channels and external cooling channels. Heat exchange occurs between the medium and cooling water through the plate's heat conduction. The cooling channels can be formed by immersing the heat exchange plate in a cooling water tank, or by creating channels on the plate's surface using a plate structure. The second method requires a more sophisticated and complex plate structure. While the first method is simpler in structure, the heat exchange plate acts as an interceptor of the cooling water, hindering its flow and resulting in poor water mobility. This tends to create high-temperature zones near the plate and low-temperature zones further away, leading to a small temperature difference between the high-temperature zones and the heat exchange plate, thus reducing heat exchange efficiency. Utility Model Content

[0004] The purpose of this application is to provide a waste heat recovery and reuse device for industrial steam condensate, which aims to solve the problems existing in the prior art.

[0005] This application provides a waste heat recovery and reuse device for industrial steam condensate, including a cooling water tank filled with cooling water. The cooling water tank has a cooling water inlet and a cooling water outlet at its two ends. It also includes multiple heat exchange plates installed along the length of the cooling water tank. Each heat exchange plate has a vertical medium flow channel. The upper and lower ends of the heat exchange plates are exposed outside the cooling water tank, and flow channel openings communicating with the medium flow channels are provided at both the upper and lower ends of the heat exchange plates. Adjacent heat exchange plates are connected by bends installed at the flow channel openings. The multiple heat exchange plates and bends combine to form a rotating medium flow channel. Each heat exchange plate has a through hole perpendicular to the medium flow channel and not communicating with it, allowing communication between the two cooling water tank spaces separated by the heat exchange plates.

[0006] Furthermore, condensate is introduced into the medium flow channels of the heat exchange plate, and the flow direction of the condensate is opposite to that of the cooling water.

[0007] Furthermore, there are multiple through holes, which are distributed in a matrix on the heat exchanger plate.

[0008] Furthermore, the heat exchange assembly includes a base plate and a mounting plate assembled together. The base plate has a raised frame around its perimeter, and multiple connecting pipes are fixed on the base plate within the frame. The length of the connecting pipes is greater than the thickness of the frame. The mounting plate also has a frame around its perimeter, and insertion holes are opened on the mounting plate within the frame corresponding to the connecting pipes. The connecting pipes are inserted into the insertion holes, and a seal is provided between the connecting pipes and the insertion holes.

[0009] Furthermore, a locking block for engaging the buckle plate is fixed on the frame of the base plate, and the locking block has multiple screw holes; bolts are screwed onto the frame of the buckle plate corresponding to the screw holes.

[0010] The beneficial effects of this utility model are as follows: This utility model uses a heat exchanger plate partially immersed in cooling water for heat exchange, and multiple heat exchanger plates form a curved and rotating cooling flow channel through bent pipes, achieving the effect of multiple heat exchange in the cooling water. Connecting pipes are installed on the heat exchanger plates to form through holes penetrating the plates, reducing the obstruction of the cooling water flow by the heat exchanger plates, enhancing the fluidity of the cooling water, eliminating high-temperature zones in the cooling water, and increasing the contact area in conjunction with the connecting pipes, thereby improving heat exchange efficiency and realizing the recovery of waste heat from the condensate. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the front structure of the base plate.

[0013] Figure 3 This is a schematic diagram of the vertical cross-sectional structure of the heat exchanger plate.

[0014] In the picture:

[0015] 1. Cooling water tank; 2. Cooling water inlet; 3. Cooling water outlet; 4. Heat exchanger plate; 5. Medium flow channel; 6. Flow channel opening; 7. Bend; 8. Condensate inlet; 9. Condensate outlet; 10. Base plate; 11. Buckle plate; 12. Frame; 13. Connecting pipe; 14. Insertion hole; 15. Clip; 16. Screw hole; 17. Bolt. Detailed Implementation

[0016] 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.

[0017] like Figure 1The device shown is a waste heat recovery and reuse device for industrial steam condensate, comprising a cooling water tank 1 filled with cooling water. The cooling water tank 1 has a cooling water inlet 2 and a cooling water outlet 3 at its two ends. It also includes multiple heat exchange plates 4, which are installed along the length of the cooling water tank 1. Each heat exchange plate 4 has a vertical medium flow channel 5. The upper and lower ends of each heat exchange plate 4 are exposed outside the cooling water tank 1, and each heat exchange plate 4 has a flow channel opening 6 communicating with the medium flow channel 5 at both its upper and lower ends. Adjacent heat exchange plates 4 are connected by bends 7 installed at the flow channel openings 6. The multiple heat exchange plates 4 and bends 7 combine to form a rotating medium flow channel 5. Condensate flows into the medium flow channel 5 of the heat exchange plates 4, and the flow direction of the condensate is opposite to that of the cooling water. Figure 1 As shown, the cooling water tank 1 has a cooling water outlet 3 on the upper left side and a cooling water inlet on the lower right side. The upper left elbow 7 serves as a condensate inlet 8, and the upper right elbow 7 serves as a condensate outlet 9. The cooling water and condensate flow in opposite directions, improving heat exchange. Preferably, the elbow 7 has an insulation layer to prevent heat loss from the condensate.

[0018] Each heat exchange plate 4 has a through hole that is perpendicular to and does not communicate with the medium flow channel 5. The through hole connects the two cooling water tanks 1 separated by the heat exchange plate 4. Cooling water can flow from the right side to the left side of the cooling water tank 1 through the through hole, which enhances the fluidity of the cooling water, allows the cooling water to be continuously replenished with new low-temperature cooling water, and also increases the contact area between the heat exchange plate 4 and the cooling water, thereby enhancing the heat exchange efficiency.

[0019] like Figure 2 and Figure 3 As shown, the heat exchange plate 4 includes a base plate 10 and a mounting plate 11 assembled together. Both the base plate 10 and the mounting plate 11 are made of thermally conductive metal. The base plate 10 has a raised frame 12 around its perimeter. Multiple connecting pipes 13 are fixed on the base plate 10 within the frame 12. The length of the connecting pipes 13 is greater than the thickness of the frame 12. The mounting plate 11 also has a frame around its perimeter. The mounting plate 11 within the frame has insertion holes 14 corresponding to the connecting pipes 13. The connecting pipes 13 are inserted into the insertion holes 14. To ensure the sealing of the medium flow channel 5 at the insertion holes 14, a seal is provided between the connecting pipes 13 and the insertion holes 14. The seal can be made by using a rubber ring or by direct welding. The base plate 10 and the snap plate 11 are aligned and fitted together, with the frame corresponding to the frame. The space formed between the raised frame 12 and the surface of the base plate 10 / snap plate 11 is the medium flow channel 5. Condensate can enter the medium flow channel 5 through the flow port 6 at one end, pass through the gaps between the connecting pipes 13, and then exit through the flow port 6 at the other end. The connecting pipes 13 form through holes on the heat exchange plate 4 for cooling water to pass through, allowing cooling water to flow through the heat exchange plate 4 and increasing the contact area between the medium flow channel 5 and the cooling water, thereby increasing the heat exchange efficiency.

[0020] A locking block 15 for engaging with the buckle plate 11 is fixed on the frame 12 of the base plate 10. The locking block 15 has multiple screw holes 16. A corresponding slot is formed on the frame of the buckle plate 11, allowing the base plate 10 and the buckle plate 11 to engage. Bolts 17 are screwed onto the frame of the buckle plate 11 corresponding to the screw holes 16. When the buckle plate 11 and the base plate 10 are assembled, tightening the bolts 17 ensures a tight connection between the buckle plate 11 and the base plate 10. In addition, sealing washers are installed on both the inner and outer sides of the locking block 15. The sealing washers rest between the frame of the base plate and the frame of the buckle plate. Tightening the bolts 17 compresses the sealing washers, achieving a seal on the frame 12 for the medium flow channel 5.

[0021] Preferably, there are multiple through holes (connecting pipes 13), and the multiple through holes (connecting pipes 13) are distributed in a matrix on the heat exchange plate 4.

[0022] The condensate generated from the heat exchange of industrial steam enters this waste heat recovery device through condensate inlet 8. From condensate inlet 8, it passes through multiple heat exchange plates 4 and undergoes multiple heat exchanges with cooling water before finally exiting from condensate outlet 9. The cooling water flows in the opposite direction, and fresh low-temperature cooling water is continuously replenished to the cooling water tank 1. The cooling water that has absorbed heat and increased in temperature leaves from the cooling water outlet 3 in a timely manner, avoiding a decrease in heat exchange efficiency due to the increase in cooling water temperature and the decrease in temperature difference.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects.

Claims

1. A waste heat recovery and reuse device using industrial steam condensate water, characterized by, The application relates to a cooling water tank, which is filled with cooling water, and comprises a plurality of heat exchange plates, which are installed along the length direction of the cooling water tank, and a plurality of bend pipes, which are arranged between the heat exchange plates and connect the heat exchange plates.

2. The apparatus for recovering and reusing waste heat of industrial steam condensate water according to claim 1, wherein The medium flow channel of the heat exchange plate is filled with condensate water, and the flow direction of the condensate water is opposite to that of the cooling water.

3. The apparatus for recovering and reusing waste heat of industrial steam condensate water according to claim 1, wherein The heat exchange plate comprises a bottom plate and a buckle plate which are spliced together, the periphery of the bottom plate is provided with a raised frame, a plurality of communication pipes are fixed on the bottom plate in the frame, the length of the communication pipes is greater than the thickness of the frame, the periphery of the buckle plate is also provided with a frame, and the buckle plate in the frame is provided with a plurality of insertion holes corresponding to the communication pipes.

4. The apparatus for recovering and reusing waste heat of industrial steam condensate water according to claim 1, wherein The frame of the bottom plate is provided with a clamping block for clamping the buckle plate, a plurality of screw holes are formed in the clamping block, and the frame of the buckle plate is provided with bolts corresponding to the screw holes.

5. The apparatus for recovering and reusing waste heat of industrial steam condensate water according to claim 4, wherein ​

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