Heat exchanger with loose lining structure

A technology of heat exchangers and heat exchange tubes, which is applied in the direction of heat exchanger types, heat exchanger shells, indirect heat exchangers, etc., can solve the problems of wasting time, manpower and cost, medium leakage, high cost, etc., to ensure safety Use, prevent medium leakage, high corrosion resistance

Pending Publication Date: 2019-12-10
杨万鹏
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AI-Extracted Technical Summary

Problems solved by technology

[0002] At present, in the field of heat exchanger manufacturing, full loose lining is usually used, so that the lining layer cannot be used under vacuum conditions. Under the working condition of -0.1MPa, it is very easy to lose stability, resulting in medium leakage, endangering the environment and life safety. wait for the accident
In addition, heat exchangers with a full loose lining structure generally use non-ferrous metal screws to fix the loose lining. This ...
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Method used

Heat exchanger of the present invention, by arranging inward reinforcing ring on tube box shell corrosion-resistant layer 8, can improve the corrosion resistance strength of tube box shell corrosion-resistant layer 8, strengthen the stability of heat exchanger , so that the heat exchanger can be used safely under vacuum and negative pressure conditions.
In one embodiment, as shown in Figure 2, the pipe box part is a cylindrical structure, the second end of the pipe box housing 7 is provided with a second pipe box flange 19, the The pipe box part is also provided with a pipe box flat cover 9 matched with the second end of the pipe box shell 7; the loose lining structure also includes a pipe box flat cover corrosion-resistant layer 10, and the pipe box flat cover is resistant to corrosion. The corrosion layer 10 is arranged on the side of the tube box flat cover 9 that matches the second end of the tube box shell 7, thereby improving the corrosion resistance of the tube box flat cover 9 and further improving the service life of the heat exchanger. safety.
In one embodiment, as shown in Figure 3, described tube box flat cover 9 is provided with tube box flat cover connection 15 on the side away from described tube box shell 7, and described loose liner structure also Including the pipe box flat cover takeover corrosion resistant layer 16, the pipe box flat cover takeover corrosion resistant layer 16 is arranged on the inner surface of the pipe box flat cover takeover 15, thereby improving the corrosion resistance of the pipe box flat cover takeover 15, further Improve the safety of heat exchanger use.
In one embodiment, described loose liner structure also comprises pipe box flange corrosion-resistant layer 6, and described pipe box flange corrosion-resistant layer 6 is arranged on described pipe box flange 5 and described pipe box flange The side where the plate 2 is connected, thereby improving the corrosion resistance of the pipe box flange 5 and further improving the safety of the heat exchanger.
In one embodiment, the end of the pipe box connection 11 is provided with a pipe box connection flange 13, and the loose lining structure also includes a pipe box connection flange corrosion-resistant layer 14, and the pipe box connection flange The flange corrosion-resistant layer 14 is arranged on the inner side of the pipe box connecting flange 13, thereby improving the corrosion resistance of the pipe box connecting flange 13, and further improving the safety of the heat e...
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Abstract

The invention provides a heat exchanger with a loose lining structure. The heat exchanger comprises a main body part and a pipe box part. The main body part comprises a shell, a pipe plate and a heatexchange pipe. The pipe plate is vertically arranged at one end of the shell, and the heat exchange pipe is vertical to the pipe plate in the shell; the pipe box part comprises a pipe box shell, and the pipe box shell is provided with a pipe box flange at a first end connected to the pipe plate; the heat exchanger also comprises the loose lining structure which comprises a pipe box shell corrosion-resistant layer which is arranged on the inner surface of the pipe box shell, at least one inward reinforcing ring is arranged on the pipe box shell corrosion-resistant layer in an extruding manner,and the ring surface of the reinforcing ring is parallel to the pipe plate. The heat exchanger provided with the reinforcing structure is high in corrosion resistant strength and good in stability, and can be used safely in vacuum and negative pressure working conditions. The heat exchanger is provided with leakage detection equipment capable of detecting sealing property of the heat exchanger anytime so as to prevent leakage of a medium, so that safe use is guaranteed.

Application Domain

Reinforcing meansHeat exchange simulation +3

Technology Topic

Image

  • Heat exchanger with loose lining structure
  • Heat exchanger with loose lining structure
  • Heat exchanger with loose lining structure

Examples

  • Experimental program(1)

Example Embodiment

[0020] The technical solutions and effects of the present invention will be further described below through specific embodiments. The following embodiments are only used to illustrate the content of the present invention, and are not intended to limit the protection scope of the present invention. Simple changes made to the present invention by applying the concept of the present invention are all within the scope of protection of the present invention.
[0021] like figure 1 As shown, the heat exchanger with a loose lining structure of the present invention includes a main body part and a tube box part; the main body part includes a shell 1, a tube sheet 2 and a heat exchange tube 3, and the tube sheet 2 is vertically arranged at one end of the shell 1, and the heat exchange tube 3 is vertically fixed on the tube plate 2 in the shell 1; the tube box part includes a tube box shell 7, and the tube box The tank shell 7 is provided with a tube box flange 5 on the first end connected to the tube sheet 2; the heat exchanger also includes a loose lining structure, and the loose lining structure includes a corrosion-resistant layer of the tube box shell 8. The pipe box shell corrosion-resistant layer 8 is arranged on the inner surface of the pipe box shell 7, and at least one inward reinforcing ring 20 is extruded on the pipe box shell corrosion-resistant layer 8, so that The ring surface of the reinforcing ring 20 is parallel to the tube plate 2 .
[0022] In the heat exchanger of the present invention, by setting an inward reinforcing ring on the corrosion-resistant layer 8 of the tube-box shell, the corrosion-resistant strength of the corrosion-resistant layer 8 of the tube-box shell can be improved, and the stability of the heat exchanger can be enhanced, so that the heat exchanger can The heater can be used safely under vacuum and negative pressure conditions.
[0023] The reinforcement ring 20 is formed by extruding the corrosion-resistant layer 8 of the pipe box shell, and the ring surface of the reinforcement ring 20 is parallel to the tube sheet 2, and the plane where the circumference of the reinforcement ring is located is equal to one circle of the cross section cut by the pipe box shell 7. , with the same center as its circumference.
[0024] In one embodiment, the heat exchange tube 3 is a silicon carbide heat exchange tube.
[0025] In one embodiment, the pipe box shell 7 is a glass reinforced plastic shell or a glass-lined shell.
[0026] In one embodiment, the pipe box shell 7 is provided with a leak detection hole, and the outer surface of the pipe box shell 7 is provided with a leak detection pipe collar 21 matched with the leak detection hole. To install the leak detection tube; the other end of the leak detection tube is connected to the leak detection equipment, so that the liquid penetration test and the medium leakage test can be performed to detect the tightness of the heat exchanger at any time, prevent the medium from leaking, and further ensure the integrity of the heat exchanger. Safe to use.
[0027] In one embodiment, the loose lining structure includes a tube sheet corrosion-resistant lining 4, and the tube sheet corrosion-resistant lining 4 is arranged on the side of the tube sheet 2 that is in contact with the tube box part, Therefore, the corrosion resistance of the tube sheet 2 is improved, and the safety of the heat exchanger is further improved.
[0028] In one embodiment, the loose lining structure further includes a pipe box flange corrosion-resistant layer 6, and the pipe box flange corrosion-resistant layer 6 is arranged on the pipe box flange 5 to be in contact with the tube sheet 2. Connected side, thereby improving the corrosion resistance of the pipe box flange 5, and further improving the safety of the heat exchanger.
[0029] In one embodiment, the pipe box part is a tapered structure, the pipe box lifting lug 11 is sheathed on the second end of the pipe box shell 7, and the loose lining structure also includes the pipe box lifting lug to withstand Corrosion layer 22 , the corrosion resistant layer 22 of the pipe box lifting lug is arranged on the outside of the pipe box lifting lug 11 and parallel to the tube sheet 2 .
[0030] In one embodiment, as figure 2 As shown, the pipe box part is a cylindrical structure, the second end of the pipe box shell 7 is provided with a second pipe box flange 19, and the pipe box part is also provided with a The pipe box flat cover 9 matched with the second end of 7; the loose lining structure also includes a pipe box flat cover corrosion-resistant layer 10, and the pipe box flat cover corrosion-resistant layer 10 is arranged on the pipe box flat cover 9 The side matching the second end of the tube box shell 7 improves the corrosion resistance of the tube box flat cover 9 and further improves the safety of the heat exchanger.
[0031] In one embodiment, the flat cover 9 of the pipe box is provided with a second leak detection hole and a second leak detection pipe collar 23 matched with the second leak detection hole for installing the second leak detection pipe The other end of the second leak detection tube is connected to a leak detection device, so that a liquid penetration test and a medium leakage test can be performed to detect the tightness of the heat exchanger at any time, prevent medium leakage, and further ensure the safe use of the heat exchanger. At the same time, the pipe box housing 7 is also provided with a leak detection pipe collar 21 .
[0032] In one embodiment, the middle part of the pipe box shell 7 is provided with a pipe box connection 11, and the loose lining structure also includes a pipe box connection corrosion-resistant layer 12, and the pipe box connection corrosion-resistant layer 12 is arranged on the The inner surface of the pipe box connecting pipe 11 is described, thereby improving the corrosion resistance of the pipe box connecting pipe 11, and further improving the safety of the use of the heat exchanger.
[0033] In one embodiment, the pipe box joint 11 is provided with a third leak detection hole and a third leak detection pipe collar 24 matched with the third leak detection hole for installing a third leak detection pipe; The other end of the third leak detection pipe is connected to leak detection equipment, so that liquid penetration test and medium leakage test can be performed to detect the tightness of the heat exchanger at any time to prevent medium leakage and further ensure the safe use of the heat exchanger.
[0034] In one embodiment, the end of the pipe box connection 11 is provided with a pipe box connection flange 13, and the loose lining structure also includes a corrosion resistance layer 14 for the pipe connection flange. The corrosion layer 14 is arranged on the inside of the pipe box connecting flange 13, thereby improving the corrosion resistance of the pipe box connecting flange 13, and further improving the safety of the heat exchanger.
[0035] In one embodiment, as image 3 As shown, the pipe box flat cover 9 is provided with a pipe box flat cover connecting pipe 15 on the side away from the pipe box shell 7, and the loose lining structure also includes a pipe box flat cover connecting corrosion resistant layer 16, the The corrosion resistance layer 16 of the pipe box flat cover connecting pipe is arranged on the inner surface of the pipe box flat cover connecting pipe 15, thereby improving the corrosion resistance of the pipe box flat cover connecting pipe 15 and further improving the safety of the heat exchanger.
[0036] In one embodiment, the end of the pipe box flat cover joint 15 is provided with a pipe box flat cover joint flange 17, and the loose lining structure also includes a pipe box flat cover joint flange corrosion-resistant layer 18. The corrosion-resistant layer 18 of the pipe box flat cover connecting flange is arranged on the inner side of the pipe box flat cover connecting flange 17, thereby improving the corrosion resistance of the pipe box flat cover connecting flange 17 and further improving the safety of the heat exchanger. .
[0037] In the heat exchanger structure of the present invention, the corrosion-resistant layer is arranged at a corresponding position by means of welding.
[0038]In one embodiment, when the pipe box part is connected with the main body part, a PTFE gasket or a graphite gasket can be used, so as to achieve a completely effective corrosion-resistant space.
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Description & Claims & Application Information

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