High-temperature tubular heat exchanger

Abstract

According to the high-temperature tubular heat exchanger provided by the utility model, the shell adopts a double-layer design, and an efficient heat insulation barrier is formed by the heat insulation filler filled between the inner-layer cavity and the outer-layer shell and the heat preservation layer on the inner side of the inner-layer cavity, so that the loss of heat of a heat medium is reduced to a great extent; heat is mainly concentrated in the heat exchanger for efficient heat exchange, the heat exchange efficiency is improved, and energy loss is reduced; meanwhile, a plurality of heat exchange pipelines are arranged to conduct dispersion heat exchange on the cold medium, the heat exchange pipelines are designed to be S-shaped bent pipes which are bent up and down in a reciprocating mode, heat exchange fins with hollowed-out holes are evenly distributed on the outer walls of the heat exchange pipelines at intervals, the contact area between the hot medium and the cold medium is greatly increased, sufficient absorption and transmission of heat are facilitated, and the heat exchange efficiency is improved. The heat exchange efficiency is further improved; in addition, a temperature control regulating valve is further arranged to control the temperature and the speed of the heat medium entering the heat exchanger, and the more stable and efficient heat exchange process is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tubular heat exchangers, in particular to a high-temperature tubular heat exchanger. Background Art

[0002] A tubular heat exchanger is a device that realizes heat transfer between materials among two or more media at different temperatures, aiming to transfer heat from a hot medium with a higher temperature to a cold medium with a lower temperature, fully utilize the energy of the hot medium, and enable the temperature of the cold medium to reach a preset index, thereby improving energy utilization efficiency.

[0003] However, in a high-temperature heat exchanger, during the heat exchange process of the hot medium energy, due to poor heat insulation effect of the heat exchanger body or too low heat exchange efficiency of the heat exchanger, heat often radiates from the heat exchanger body to the outside and the energy of the hot medium is discharged to the outside without being absorbed by the cold medium, so that the energy of the hot medium is not fully utilized by the cold medium, resulting in energy loss. At the same time, the increase in temperature makes the temperature of the heat exchanger body too high, which also brings potential safety hazards. Therefore, in order to improve the heat transfer efficiency and utilization rate of the heat exchanger and reduce energy loss, it is necessary to provide a high-temperature tubular heat exchanger. Summary of the Utility Model

[0004] Aiming at the technical problems in the prior art that the heat of the hot medium with a relatively high temperature is not fully absorbed by the cold medium during heat exchange, the heat exchange efficiency is relatively low, the energy consumption is large, and there are potential safety hazards, the utility model provides a high-temperature tubular heat exchanger with high heat conversion efficiency.

[0005] A high-temperature tubular heat exchanger includes a shell, on which a hot medium inlet pipe, a cold medium inlet pipe, and their corresponding hot medium outlet pipe and cold medium outlet pipe are provided; the shell includes an inner cavity and an outer shell; heat insulation filler is filled between the inner cavity and the outer shell; a heat preservation layer is laid on the inner side of the inner cavity; a temperature control regulating valve for detecting the temperature of the entering hot medium is provided on the hot medium inlet pipe; a first manifold and a second manifold are arranged in the shell, and the first manifold is communicated with the cold medium inlet pipe, and the second manifold is communicated with the cold medium outlet pipe; a plurality of heat exchange pipes are evenly distributed between the first manifold and the second manifold, and both ends of the heat exchange pipes are respectively communicated with the first manifold and the second manifold; the heat exchange pipes are serpentine bent pipes bent up and down reciprocally, and a plurality of heat exchange fins are evenly distributed at intervals on the outer wall of the heat exchange pipes, and hollow holes penetrating through the heat exchange fins are provided on the heat exchange fins.

[0006] Further, the heat insulation filler is heat preservation rock wool; the heat preservation layer is a heat insulation glass fiber board, and the heat exchange fins are made of high-temperature resistant steel.

[0007] Furthermore, a number of reinforcing ribs are evenly distributed on the inner side of the inner cavity and the outer shell.

[0008] Furthermore, high-temperature and corrosion-resistant coatings are provided on both the inner surface and the outer wall surface of the heat exchange pipe; and an endothermic coating is also plated on the high-temperature and corrosion-resistant coating on the outer surface of the heat exchange pipe.

[0009] Furthermore, clamping grooves are provided on the heat exchange pipes, and the heat exchange fins are detachably installed on the clamping grooves.

[0010] Furthermore, solenoid valves are provided on the cold medium inlet pipe, the hot medium outlet pipe and the cold medium outlet pipe.

[0011] Furthermore, sealing washers are provided at the connection between the first header pipe and the cold medium inlet pipe and at the connection between the second header pipe and the cold medium outlet pipe.

[0012] Furthermore, a chemical addition pipe is provided on the cold medium inlet pipe. The chemical addition pipe is communicated with a chemical storage tank containing scale removal agent through a chemical addition pump, and a chemical addition valve is provided on the chemical addition pipe.

[0013] Furthermore, a support assembly is provided below the shell. The support assembly includes a number of brackets. A shock-absorbing pad is provided on the contact surface between the brackets and the shell, and an anti-slip pad is provided at the bottom of the brackets.

[0014] The beneficial effects of the present utility model are as follows: The present utility model provides a high-temperature tubular heat exchanger. Its shell adopts a double-layer design, and an efficient heat insulation barrier is jointly formed by the heat insulation filler filled between the inner cavity and the outer shell and the heat insulation layer on the inner side of the inner cavity, greatly reducing the loss of heat of the hot medium, ensuring that the heat is mainly concentrated inside the heat exchanger for efficient heat exchange, improving the heat exchange efficiency and saving energy loss, while avoiding the safety hazard caused by excessive shell temperature due to heat overflow.

[0015] At the same time, the cold medium is dispersed for heat exchange by arranging a plurality of heat exchange pipes. The heat exchange pipes are designed as serpentine bent pipes bent up and down reciprocally, and heat exchange fins with hollow holes are evenly distributed at intervals on the outer wall of the heat exchange pipes, greatly increasing the contact area between the hot medium and the cold medium, being beneficial to the full absorption and transfer of heat, and further improving the heat exchange efficiency; in addition, a temperature control regulating valve is also provided to control the temperature and speed of the hot medium entering the heat exchanger, realizing a more stable and efficient heat exchange process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic plan view of a high-temperature tubular heat exchanger provided by the present utility model;

[0017] Figure 2Schematic cross-sectional structure diagram of a high-temperature tubular heat exchanger provided by the present utility model;

[0018] Figure 3 For Figure 2 Enlarged structure diagram of part A.

[0019] Reference signs

[0020] 1. Shell; 11. Inner cavity; 12. Outer shell; 13. Heat insulation filler; 14. Thermal insulation layer; 2. Hot medium inlet pipe; 15. First header; 16. Second header; 17. Heat exchange pipe; 18. Heat exchange fin; 3. Cold medium inlet pipe; 4. Hot medium outlet pipe; 5. Cold medium outlet pipe; 6. Temperature control regulating valve; 7. Solenoid valve; 8. Chemical addition pipe; 9. Chemical addition valve; 10. Support assembly; 101. Bracket. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Refer to Figure 1 As shown, the present utility model provides a high-temperature tubular heat exchanger, which includes a shell 1, and a hot medium inlet pipe 2, a cold medium inlet pipe 3, and their corresponding hot medium outlet pipe 4 and cold medium outlet pipe 5 are provided on the shell.

[0023] Specifically, refer to Figure 2 And Figure 3 As shown, the shell 1 includes an inner cavity 11 and an outer shell 12; a heat insulation filler 13 is filled between the inner cavity 11 and the outer shell 12; a thermal insulation layer 14 is laid on the inner side of the inner cavity 11.

[0024] By adopting a double-layer design for the shell 1, and jointly forming an efficient heat insulation barrier through the heat insulation filler 13 filled between the inner cavity 11 and the outer shell 12 and the thermal insulation layer 14 on the inner side of the inner cavity 13, the double-layer thermal insulation and sealing structure can greatly improve the heat insulation efficiency, greatly reduce the heat loss of the hot medium, ensure that the heat is mainly concentrated inside the heat exchanger for efficient heat exchange, improve the heat exchange efficiency and save energy consumption. At the same time, it can avoid the safety hazard of scalding users caused by the excessive temperature of the shell 1 due to the heat overflow of the hot medium. In this embodiment, the heat insulation filler 13 is heat-insulating rock wool; the thermal insulation layer 14 is a heat-insulating fiberglass board.

[0025] A number of reinforcing ribs 101 are evenly distributed on the inner side of the inner cavity 11 and the outer shell 12. By providing the reinforcing ribs 11, the overall strength of the shell 1 can be enhanced, the thermal stress generated by the temperature difference between the front and back of the shell 1 can be dispersed and balanced, the deformation of the shell 1 and the concentration of thermal stress caused by the temperature difference can be reduced, the stability and safety of the heat exchanger can be maintained, and the service life of the heat exchanger can be extended.

[0026] A temperature control regulating valve 6 for detecting the temperature of the incoming heat medium is provided on the heat medium inlet pipe 2; by providing the temperature control regulating valve 6, the temperature and speed of the heat medium entering the heat exchanger can be controlled by adjusting the opening of the valve, realizing a more stable and efficient heat exchange process.

[0027] Electromagnetic valves 7 are provided on the cold medium inlet pipe 3, the heat medium outlet pipe 4, and the cold medium outlet pipe 5. By controlling the opening and closing degree of the electromagnetic valve, the fluid inflow rate of each pipeline can be controlled, and the heat exchange process can be controlled.

[0028] A first manifold 15 and a second manifold 16 are provided in the shell 1, and the first manifold 15 is communicated with the cold medium inlet pipe 3, and the second manifold 16 is communicated with the cold medium outlet pipe 5; a number of heat exchange pipes 17 are evenly distributed between the first manifold and the second manifold, and both ends of the heat exchange pipe 17 are respectively communicated with the first manifold 15 and the second manifold 16.

[0029] When the heat exchanger works, the heat medium flows into the inner cavity 11 through the heat medium inlet pipe 2, flows in the inner cavity 11 and flows out from the heat medium outlet pipe 4; the cold medium flows through the cold medium inlet pipe 3 into the first manifold 15, and then flows into the heat exchange pipes 17. When the cold medium flows through the heat exchange pipes 17, it will absorb and exchange the heat of the heat medium in the inner cavity 11 through the pipe wall. Subsequently, each heat exchange pipe 17 converges into the second manifold and flows out from the cold medium outlet pipe 5, so that the flowing cold medium has a certain amount of heat, realizing the transfer of heat between the media and making full use of the heat.

[0030] Sealing gaskets (not shown in the figure) are provided at the connection between the first manifold 15 and the cold medium inlet pipe 3 and at the connection between the second manifold 16 and the cold medium outlet pipe 5 to ensure the sealing between the pipes and ensure the smooth progress of the heat exchange process.

[0031] The heat exchange pipe 17 is a serpentine elbow that bends up and down reciprocally. A number of heat exchange fins 18 are evenly distributed at intervals on the outer wall of the heat exchange pipe 17. The heat exchange fins are provided with hollow holes that penetrate the heat exchange fins. By arranging a plurality of heat exchange pipes 17 to disperse the heat exchange of the cold medium, and designing the heat exchange pipe 17 as a serpentine elbow that bends up and down reciprocally, and evenly distributing heat exchange fins 18 with hollow holes on the outer wall of the heat exchange pipe 17, the contact area between the hot medium and the cold medium is greatly increased, which is conducive to the full absorption and transfer of heat, and further improves the heat exchange efficiency and the utilization rate of heat. In this embodiment, the heat exchange fins 18 are made of high-temperature resistant steel.

[0032] The heat exchange pipe 17 is provided with a card slot, and the heat exchange fin 18 is detachably installed on the card slot. Through the detachable setting, it is convenient to replace the damaged heat exchange fins 18 during the maintenance of the heat exchanger.

[0033] The inner surface and the outer wall surface of the heat exchange pipe 17 are both provided with high-temperature resistant and corrosion-resistant coatings; and an endothermic coating is also plated on the high-temperature resistant and corrosion-resistant coating on the outer surface of the heat exchange pipe 17. The high-temperature resistant and corrosion-resistant coating can protect the heat exchange pipe 17 from corrosion in various working environments, effectively extending the service life of the heat exchange pipe 17. The endothermic coating on the outer wall surface of the heat exchange pipe 17 can better absorb heat, further improving the heat transfer efficiency.

[0034] A chemical addition pipe 8 is provided on the cold medium inlet pipe 3. The chemical addition pipe is communicated with a chemical agent storage tank containing scale removal agent through a chemical addition pump, and a chemical addition valve 9 is provided on the chemical addition pipe.

[0035] Through the action of the chemical addition pump, the scale removal cleaning liquid is extracted from the chemical agent storage tank and conveyed through the chemical addition pipe 8 into the heat exchange pipe 17, so that the scale removal agent chemically reacts with the scale layer and impurities attached to the inner wall of the heat exchange pipe 17 to remove the dirt in the heat exchange pipe 17, and by adjusting the opening degree of the chemical addition valve 9, the amount of the scale removal cleaning liquid put into the pipe can be accurately controlled.

[0036] A support assembly 10 is provided below the housing 1. The support assembly 10 includes a number of brackets 101. A shock-absorbing pad is provided on the contact surface between the bracket 101 and the housing 1, and an anti-slip pad is provided at the bottom of the bracket. By providing the shock-absorbing pad, the vibration caused by equipment operation or the external environment can be absorbed and reduced, thereby protecting the heat exchanger from damage and extending its service life. By providing the anti-slip pad, the friction between the bracket 101 and the ground is increased, preventing the heat exchanger from sliding or shifting during operation due to vibration or other reasons.

[0037] The above are only embodiments of the present utility model, and do not thus limit the patent scope of the present utility model. Any equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A high-temperature tubular heat exchanger, comprising a shell, on which a hot medium inlet pipe, a cold medium inlet pipe and corresponding hot medium outlet pipes and cold medium outlet pipes are provided; characterized in that: The shell comprises an inner cavity and an outer shell; a heat-insulating filler is filled between the inner cavity and the outer shell; a heat-insulating layer is laid inside the inner cavity; a temperature-control regulating valve for detecting the temperature of the incoming heat medium is provided on the heat medium inlet pipe; The shell is provided with a first header and a second header, and the first header is connected to the cold medium inlet pipe, and the second header is connected to the cold medium outlet pipe; a plurality of heat exchange pipes are evenly distributed between the first header and the second header, and both ends of the heat exchange pipes are connected to the first header and the second header respectively; The heat exchange pipe is a serpentine curved pipe that bends back and forth up and down. A plurality of heat exchange fins are evenly distributed at intervals on the outer wall of the heat exchange pipe. The heat exchange fins are provided with hollow holes that penetrate the heat exchange fins.

2. A high temperature tubular heat exchanger according to claim 1, characterized in that: The heat-insulating filler is heat-insulating rock wool; the heat-insulating layer is a heat-insulating glass fiber board, and the heat-exchanging fins are made of high-temperature resistant steel.

3. A high temperature tube heat exchanger according to claim 1, characterized in that: A plurality of reinforcing ribs are evenly distributed on the inner side of the inner cavity and the inner side of the outer shell.

4. A high temperature tube heat exchanger according to claim 1, characterized in that: The inner surface and outer wall surface of the heat exchange pipe are both provided with a high temperature resistant and corrosion resistant coating; and the high temperature resistant and corrosion resistant coating on the outer surface of the heat exchange pipe is also plated with a heat absorbing coating.

5. The high temperature tube heat exchanger according to claim 1, characterized in that: The heat exchange pipes are all provided with slots, and the heat exchange fins are detachably mounted on the slots.

6. A high temperature tube heat exchanger according to claim 1, characterized in that: The cold medium inlet pipe, the hot medium outlet pipe and the cold medium outlet pipe are all provided with solenoid valves.

7. The high temperature tube heat exchanger according to claim 1, characterized in that: Sealing gaskets are provided at the connection between the first header and the cold medium inlet pipe and at the connection between the second header and the cold medium outlet pipe.

8. The high temperature tube heat exchanger according to claim 1, characterized in that: A dosing pipe is arranged on the cold medium inlet pipe, the dosing pipe is communicated with a medicine storage tank containing a descaling agent through a dosing pump, and a dosing valve is arranged on the dosing pipe.

9. The high temperature tube heat exchanger according to claim 1, characterized in that: A support assembly is arranged below the shell, and the support assembly comprises a plurality of brackets. A shock-absorbing pad is arranged on the contact surface between the bracket and the shell, and an anti-skid pad is arranged at the bottom of the bracket.

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