Quickly-mounted coil heat exchanger

Abstract

The utility model relates to the technical field of heat exchangers, in particular to a fast-assembly type coil heat exchanger. Comprising a barrel, tube plates are fixed to the two sides in the barrel, a plurality of multi-return-stroke tube fittings are arranged in the barrel, each multi-return-stroke tube fitting comprises a plurality of heating tubes, the heating tubes penetrate through tube holes of the two tube plates, and the heating tubes are connected with the tube plates in a sealed mode. The multiple heating pipes of the same multi-return-stroke pipe fitting are connected end to end in a sealed mode through multiple quick connecting pipes to form a multi-return-stroke coiled pipe, the two ends of the multi-return-stroke coiled pipe fixedly communicate with communicating pipes, the ends, away from the multi-return-stroke coiled pipe, of the communicating pipes extend to the outer side of the barrel, and the two ends of the barrel are detachably and fixedly connected with panels in a sealed mode. And the lower end of the barrel between the two tube plates is fixedly communicated with a shell pass inlet, a shell pass outlet and a discharge port. According to the fast-assembly coil heat exchanger, the tube plates on the two sides in the barrel are used for replacing end sockets, internal supporting pieces are omitted, and the fast-assembly coil heat exchanger is simple and compact in structure, material-saving, easy to manufacture and low in manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a quick-assembly coil heat exchanger. Background Art

[0002] The shell-and-tube heat exchanger is an essential equipment in industries such as petrochemical, thermal power generation, heating and refrigeration, catering and bathing, etc., for heating and cooling media. Therefore, its performance directly affects the safe operation during use. The structure of the traditional floating-head shell-and-tube heat exchanger is as Figure 3 shown: The cylinder body 103 is connected to the front head tube box 110 and the rear head tube box 107 by flange bolts 104 (abbreviation: shell side); both ends of the heating tubes 130 inside the cylinder body 103 are respectively welded in the tube holes of the front tube sheet 140 and the rear tube sheet 105, and the inner head tube box 106 is connected to the rear tube sheet 105 by flange bolts 104 (abbreviation: tube side); hot water enters from the shell side water inlet pipe 108 and the water outlet is discharged from the shell side water outlet pipe 102; cold water enters from the tube side water inlet pipe 101, enters the upper heating tubes 130 of the shunt partition plate 120, flows through the rear inner shunt tube box 106 and the lower heating tubes 130 of the shunt partition plate 120, and is discharged from the tube side water outlet pipe 100.

[0003] Over the years, due to the heating of highly corrosive media in the petroleum and chemical industries, leakage accidents of heating tubes due to corrosion perforation have occurred frequently; during operation, problems such as deposition of medium particles in the tubes or aggregation on the tube walls that cannot be cleaned and removed; and the structure of the traditional heat exchanger is seriously insufficient, and the maintenance work has to be carried out back at the processing factory, which seriously affects normal use. At present, it has to be returned to the factory for maintenance within less than two years of operation, resulting in unnecessary losses. The reasons are: the overall structure of the existing technology is backward, with high maintenance costs, low thermal efficiency, large external dimensions, and difficulty in cleaning and removing slag and scale. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is a quick-assembly coil heat exchanger with a compact structure, easy to manufacture, convenient for maintenance, convenient for removing scale in the heating tubes, and capable of reducing maintenance costs. To achieve the above object, the technical solution provided by the utility model is:

[0005] The quick-assembly coil heat exchanger includes a cylinder body, tube plates are fixed on both sides inside the cylinder body, multiple multi-pass pipe fittings are arranged inside the cylinder body, each multi-pass pipe fitting includes multiple heating tubes, the heating tubes all penetrate through the tube holes of the two tube plates, and the heating tubes are hermetically connected to the tube plates. Multiple quick-connect union pipes are used to hermetically connect the multiple heating tubes of the same multi-pass pipe fitting end to end to form a multi-pass serpentine tube. Both ends of the multi-pass serpentine tube are fixedly connected and communicated with a communicating pipe, and the end of the communicating pipe away from the multi-pass serpentine tube extends to the outside of the cylinder body. Panels are detachably and fixedly hermetically connected to both ends of the cylinder body. The lower end of the cylinder body between the two tube plates is fixedly communicated with a shell side inlet, a shell side outlet, and a drain port.

[0006] Specifically, a manhole is fixedly communicated with the upper end of the cylinder body between the two tube sheets.

[0007] Specifically, a support is fixedly connected to the lower end of the cylinder body.

[0008] Specifically, the connecting pipe on one side of the multi-pass serpentine tube is communicated with the tube side inlet, and the connecting pipe on the other side of the multi-pass serpentine tube is communicated with the tube side outlet.

[0009] Specifically, the quick-connect coupling pipe is integrally arc-shaped, and the quick-connect coupling pipe is fixedly connected to the tube sheet on one side thereof through bolts.

[0010] Specifically, the panel is composed of two arc-shaped plates, and the panel is connected to the tube sheet on one side thereof through bolts.

[0011] Specifically, the axial direction of the heating tube is parallel to the axial direction of the cylinder body, and the heating tube is a thin-walled stainless steel tube.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. For this quick-assembly coil heat exchanger, the tube sheets on both sides inside the cylinder body are used to replace the head, and the internal support members are cancelled. The structure is simple and compact, material-saving, easy to manufacture, and low in cost.

[0014] 2. The heating tube adopts a thin-walled stainless steel tube, with a seamless connection structure, free of welding, easy to replace, corrosion-resistant, easy to clean, and good in heat transfer.

[0015] 3. The panel is convenient to disassemble, which is convenient for inspection or maintenance.

[0016] 4. A manhole is provided at the top of the cylinder body, which can not only inspect the inside of the cylinder body, but also discharge the gas in the cylinder body.

[0017] 5. The heating tubes are connected by quick-connect coupling pipes, replacing the head tube box and the cylinder body interface flange. The overall structure is simple and compact. All the connecting points of the components are arranged outside the two tube sheets, which is convenient and fast for inspection and maintenance. The heating straight tubes can be drawn out, which is convenient for cleaning the scale in the heating tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of this quick-assembly coil heat exchanger.

[0019] Figure 2 is Figure 1 the view from direction A in

[0020] Figure 3 is a schematic diagram of a traditional floating head shell-and-tube heat exchanger.

[0021] The names of the components in the attached drawings are as follows: 1. Quick-connect pipe; 2. Tube sheet; 3. Heating tube; 4. Cylinder body; 5. Manhole; 6. Connecting pipe; 7. Tube-side outlet; 8. Shell-side inlet; 9. Drain port; 10. Shell-side outlet; 11. Tube-side inlet; 12. Panel. Specific embodiments

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

[0023] Embodiment 1: Refer to Figures 1 - 2 As shown, the quick-installable coil heat exchanger includes a cylinder body 4, and a support is fixedly connected to the lower end of the cylinder body 4. Tube sheets 2 are fixedly arranged on both sides inside the cylinder body 4, and a shell-side inlet 8, a shell-side outlet 10, and a drain port 9 are fixedly communicated with the lower end of the cylinder body 4 between the two tube sheets 2.

[0024] A plurality of multi-pass pipe fittings are arranged inside the cylinder body 4. Each multi-pass pipe fitting includes a plurality of heating tubes 3. The heating tubes 3 all penetrate through the tube holes of the two tube sheets 2, and the heating tubes 3 are hermetically connected to the tube sheets 2. The plurality of heating tubes 3 of the same multi-pass pipe fitting are hermetically connected end to end through a plurality of quick-connect pipes 1 to form a multi-pass serpentine tube. The quick-connect pipe 1 is integrally arc-shaped, and the quick-connect pipe 1 is fixedly connected to the tube sheet 2 on one side thereof by bolts.

[0025] Both ends of the multi-pass serpentine tube are fixedly communicated with a connecting pipe 6, and one end of the connecting pipe 6 away from the multi-pass serpentine tube extends outside the cylinder body 4. The connecting pipe 6 on one side of the multi-pass serpentine tube is communicated with the tube-side inlet 11, and the connecting pipe 6 on the other side of the multi-pass serpentine tube is communicated with the tube-side outlet 7.

[0026] Both ends of the cylinder body 4 are detachably, fixedly, and hermetically connected with a panel 12. The panel 12 is composed of two arc-shaped plates, and the panel 12 is connected to the tube sheet 2 on one side thereof by bolts.

[0027] Hot water enters the cylinder body 4 through the shell-side inlet 8 and is discharged through the shell-side outlet 10; the medium enters through the tube-side inlet 11 and is heated by the hot water in the cylinder body 4 when flowing through the heating tubes 3, and the heated medium is discharged through the tube-side outlet 7.

[0028] When it is necessary to clean the scale in the heating tubes 3, the panel 12 and the quick-connect pipes 1 are disassembled, and then the heating tubes 3 can be taken out to clean the scale therein.

[0029] Embodiment 2: On the basis of Embodiment 1, refer to Figures 1 - 2 As shown, a manhole 5 is fixedly communicated with the upper end of the cylinder body 4 between the two tube sheets 2.

[0030] A manhole 5 is provided at the top of the cylinder body 4, which can not only inspect the inside of the cylinder body 4, but also exhaust the gas inside the cylinder body 4.

[0031] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Quick-installed coil heat exchanger, including a cylinder body (4), and tube sheets (2) are fixed on both sides inside the cylinder body (4), characterized in that, Multiple multi-pass pipe fittings are arranged inside the cylinder body (4). Each multi-pass pipe fitting includes multiple heating pipes (3). The heating pipes (3) all penetrate through the pipe holes of the two tube sheets (2). The heating pipes (3) are hermetically connected to the tube sheets (2). Multiple heating pipes (3) of the same multi-pass pipe fitting are hermetically connected end to end through multiple quick-connect couplings (1) to form a multi-pass serpentine pipe. Both ends of the multi-pass serpentine pipe are fixedly connected and communicated with a communicating pipe (6). One end of the communicating pipe (6) far from the multi-pass serpentine pipe extends to the outside of the cylinder body (4). Both ends of the cylinder body (4) are detachably, fixedly and hermetically connected with a panel (12). The lower end of the cylinder body (4) between the two tube sheets (2) is fixedly communicated with a shell-side inlet (8), a shell-side outlet (10) and a drain port (9).

2. The quick-installable coil heat exchanger according to claim 1, wherein, A manhole (5) is fixedly communicated with the upper end of the cylinder body (4) between the two tube sheets (2).

3. The quick-installable coil heat exchanger according to claim 1, wherein The lower end of the cylinder body (4) is fixedly connected with a support.

4. The quick-installable coil heat exchanger according to claim 1, wherein One communicating pipe (6) on one side of the multi-pass serpentine pipe is communicated with a tube-side inlet (11), and the communicating pipe (6) on the other side of the multi-pass serpentine pipe is communicated with a tube-side outlet (7).

5. The quick-installable coil heat exchanger according to claim 1, wherein, The quick-connect coupling (1) is integrally arc-shaped. The quick-connect coupling (1) is fixedly connected to the tube sheet (2) on one side thereof through bolts.

6. The quick-installable coil heat exchanger according to claim 1, wherein, The panel (12) is composed of two arc-shaped plates. The panel (12) is connected to the tube sheet (2) on one side thereof through bolts.

7. The quick-installable coil heat exchanger according to claim 1, wherein The axial direction of the heating pipe (3) is parallel to the axial direction of the cylinder body (4). The heating pipe (3) is a thin-walled stainless steel pipe.

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