CN204214318U - U-shaped double tubesheet heat exchanger - Google Patents

Abstract

The utility model relates to a U-shaped double-tube plate heat exchanger, which comprises an outer sealing plate, a welded tube plate, an expansion tube plate, a shell-side connecting plate, a shell-side interface, a shell-side outlet, a tube-side interface, and several U-shaped heat exchangers. Tubes, shell-side sleeves, baffles, and exhaust pipes, the outer edges of the U-shaped ends of the U-shaped heat exchange tubes are respectively welded to the welded tube plate, and the right side of the welded tube plate is provided with an expansion joint tube plate, The left side of the welded tube plate is provided with an outer sealing plate, the right side of the expanded tube plate is provided with a shell-side connecting plate, the shell-side connecting plate is fixed with a shell-side sleeve, and the top of the shell-side sleeve is provided with a shell-side interface and The exhaust pipe is provided with a shell-side outlet at the bottom of the shell-side casing, and the outer sealing plate, welded tube plate, expansion joint plate and shell-side connecting plate are flange-connected together by bolts. The utility model completely separates the shell side and the tube side to ensure no pollution, the reasonable structure avoids the generation of internal stress caused by thermal expansion and cold contraction of the shell side and the tube side, and greatly improves the efficiency of the heat exchanger.

Description

U-shaped double tube plate heat exchanger

technical field

The utility model relates to a heat exchanger, in particular to a U-shaped double tube plate heat exchanger.

Background technique

With the further deepening of the new version of GMP demonstration in the domestic pharmaceutical industry, the country has also made new requirements for energy saving and consumption reduction; in the pharmaceutical industry, heat energy is the most important and most effective means of microbial control, and the selection in the production and operation process meets the requirements. It is not only required that the product cannot become a breeding place for microorganisms and meets the hygienic requirements, but also requires that the product be modified to reduce energy consumption, and ultimately reduce production costs, in line with national energy-saving standards.

For various systems in pharmaceutical engineering, the double tube plate heat exchanger is one of the only products that meet the above two requirements; first of all, it is widely used in the pharmaceutical industry, and will be used in the occasions of boring preparation, cooling of water for injection, and sterilizing lamps of pharmaceutical water this product.

However, domestic double-tube-sheet heat exchangers are mostly used in chemical, refrigeration and ventilation industries, and their structural design, material selection, and inner surface treatment do not meet the standards of the pharmaceutical industry.

At present, the double tube plate heat exchanger has the following problems: the U-shaped heat exchange tube is fixedly installed inside the shell side, and it is very troublesome to disassemble, and the inside of the U-shaped heat exchange tube is often blocked by sediment or impurities, and the shell side cannot be mechanically It is difficult to clean and check the shell side. When there is no temperature difference compensation element between the shell and the U-shaped heat exchange tube, a large temperature difference stress will be generated.

In view of the above situation, we have developed this double tube plate heat exchanger, which fully meets the requirements of the pharmaceutical industry, reduces production costs, improves heat exchange efficiency, and achieves the purpose of convenience and energy saving.

Contents of the invention

In view of the above situation, the utility model provides a U-shaped double-tube plate heat exchanger. First, a shell-side turbulence device is added to greatly improve the efficiency of the heat exchanger, reduce the heat exchanger area of the product, and shorten the heat exchanger time. . Second, the double tube plate design is adopted to completely separate the shell side and the tube side to ensure no pollution. Third, there is no dead angle in the tubes in the heat exchanger, and the liquid on the sanitary side can be completely removed from the heat exchanger when it is evacuated at normal pressure; during operation, there will be no gas on the sanitary side, and it will never exist in the heat exchanger. Fourth, the structure is reasonable to avoid internal stress caused by thermal expansion and contraction of the shell side and the tube side.

In order to achieve the above object, the technical scheme of the utility model is as follows:

U-shaped double tube plate heat exchanger, including outer sealing plate, welded tube plate, expansion tube plate, shell-side connection plate, shell-side interface, shell-side outlet, tube-side interface, several U-shaped heat exchange tubes, and shell-side casing , baffles, and exhaust pipes, the outer edges of the U-shaped ends of the U-shaped heat exchange tubes are respectively welded to the welded tube plate, the right side of the welded tube plate is provided with an expansion joint plate, and the left side of the welded tube plate There is an outer sealing plate, and the position corresponding to the U-shaped heat exchange tube on the outer sealing plate is provided with an inflow pipe and an outflow pipe. One side of the inflow pipe and outflow pipe is connected with the U-shaped heat exchange tube, and the other side is provided with a tube The right side of the expansion joint tube plate is provided with a shell-side connecting plate, a shell-side sleeve is fixed on the shell-side connecting plate, a shell-side interface and an exhaust pipe are provided on the top of the shell-side sleeve, and a shell-side interface and an exhaust pipe are installed on the bottom of the shell-side sleeve. There is a shell-side outlet, and the outer sealing plate, welded tube plate, expansion tube plate and shell-side connection plate are flange-connected together by bolts, and several baffles are arranged at equal intervals on the U-shaped heat exchange tubes.

The setting of the baffle greatly improves the efficiency of the heat exchanger, reduces the area of the heat exchanger of the product, shortens the time of the heat exchanger, and also plays the role of supporting the tube bundle. There are two types of baffles: bow-shaped and disc-circular, and bow-shaped baffles include single-bow, double-bow and triple-bow.

The outer sealing plate, welded tube plate, expansion tube plate and shell-side connection plate are flange-connected together by bolts. This double tube plate can be disassembled, so that the shell side and the tube side are completely separated. Even if leakage is caused by expansion joints, welding, etc., it will not pollute the medium on the sanitary side. It is easy to disassemble and replace, and has a long service life. The expansion tube plate design is adopted to isolate the heat exchange medium in the closed shell side, and the sealing performance is good.

The U-shaped heat exchange tubes are made of imported ASME BPE standard pipes. The BPE standard is one of the most in line with the standards of the biopharmaceutical industry and fully meets various requirements of the pharmaceutical industry, such as material, polishing and so on.

There is no dead angle in the inner tubes of the utility model, and the liquid on the sanitary side can be completely removed from the heat exchanger when emptying at normal pressure; during operation, there will be no gas on the sanitary side, and it will never exist in the heat exchanger.

The advantages of the utility model are: firstly, a shell-side turbulence device is added, which greatly improves the efficiency of the heat exchanger, reduces the area of the heat exchanger of the product, and shortens the time of the heat exchanger. Second, the double tube plate design is adopted to completely separate the shell side and the tube side to ensure no pollution. Third, there is no dead angle in the tubes in the heat exchanger, and the liquid on the sanitary side can be completely removed from the heat exchanger when it is evacuated at normal pressure; during operation, there will be no gas on the sanitary side, and it will never exist in the heat exchanger. Fourth, the structure is reasonable to avoid internal stress caused by thermal expansion and contraction of the shell side and the tube side.

Description of drawings

Fig. 1 is a sectional view of the utility model.

Fig. 2 is a left view of the utility model.

In the figure: 1-outer sealing plate, 2-welded tube plate, 3-expansion tube plate, 4-shell side connection plate, 5-tube side interface, 6-shell side interface, 7-U-shaped heat exchange tube, 8 - shell casing, 9 - baffle, 10 - exhaust pipe, 11 - inflow pipe, 12 - outflow pipe, 13 - bolt, 14 - shell side outlet.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific illustrations.

Refer to Fig. 1~Fig. 2, U-shaped double tube plate heat exchanger, including outer sealing plate, welded tube plate, expansion tube plate, shell-side connection plate, shell-side interface, shell-side outlet, tube-side interface, several U-shaped heat exchangers Heat pipes, shell-side casings, baffles, exhaust pipes, the outer edges of the U-shaped ends of the U-shaped heat exchange tubes are respectively welded to the welded tube plate, and the right side of the welded tube plate is provided with an expansion joint tube plate , the left side of the welded tube sheet is provided with an outer sealing plate, and the position corresponding to the U-shaped heat exchange tube on the outer sealing plate is provided with an inflow pipe and an outflow pipe, and one side of the inflow pipe and the outflow pipe is connected with the U-shaped heat exchange tube, The other side is provided with a tube-side interface, the right side of the expansion tube plate is provided with a shell-side connecting plate, the shell-side connecting plate is fixed with a shell-side sleeve, and the top of the shell-side sleeve is provided with a shell-side interface and an exhaust pipe , the bottom of the shell side casing is provided with a shell side outlet, the outer sealing plate, welded tube plate, expansion joint tube plate and shell side connecting plate are connected together by bolts and flanges, and the U-shaped heat exchange tubes are arranged at equal intervals There are several baffles.

The setting of the baffle greatly improves the efficiency of the heat exchanger, reduces the area of the heat exchanger of the product, shortens the time of the heat exchanger, and also plays the role of supporting the tube bundle. There are two types of baffles: bow-shaped and disc-circular, and bow-shaped baffles include single-bow, double-bow and triple-bow.

The outer sealing plate, welded tube plate, expansion tube plate and shell-side connection plate are flange-connected together by bolts. This double tube plate can be disassembled, so that the shell side and the tube side are completely separated. Even if leakage is caused by expansion joints, welding, etc., it will not pollute the medium on the sanitary side. It is easy to disassemble and replace, and has a long service life. The expansion tube plate design is adopted to isolate the heat exchange medium in the closed shell side, and the sealing performance is good.

The U-shaped heat exchange tubes are made of imported ASME BPE standard pipes. The BPE standard is one of the most in line with the standards of the biopharmaceutical industry and fully meets various requirements of the pharmaceutical industry, such as material, polishing and so on.

There is no dead angle in the inner tubes of the utility model, and the liquid on the sanitary side can be completely removed from the heat exchanger when emptying at normal pressure; during operation, there will be no gas on the sanitary side, and it will never exist in the heat exchanger.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions describe only the principle of the utility model. There will be various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The protection scope required by the utility model is defined by the appended claims and their equivalents.

Claims (2)

1.U type double tubesheet heat exchanger, it is characterized in that, comprise outer shrouding, welding tube sheet, expanded joint tube sheet, shell side connecting plate, shell side interface, shell-side outlet, tube side interface, some U heat exchange, shell side sleeve pipe, deflection plate, blast pipe, the U-shaped two ends outer rim of described U heat exchange is welded on welding tube sheet respectively, the right side of welding tube sheet is provided with expanded joint tube sheet, the left side of welding tube sheet is provided with outer shrouding, position corresponding to U heat exchange on outer shrouding is provided with flow ipe and outflow conduit, flow ipe is connected with U heat exchange with outflow conduit side, opposite side is provided with tube side interface, shell side connecting plate is provided with on the right side of described expanded joint tube sheet, shell side connecting plate is installed with shell side sleeve pipe, shell side cannula tip is provided with shell side interface and blast pipe, shell side sleeve bottom is provided with shell-side outlet, described outer shrouding, welding tube sheet, expanded joint tube sheet and shell side connecting plate linking together by bolt flange formula, at equidistant intervalsly in U heat exchange be provided with some deflection plates.

2. U-shaped double tubesheet heat exchanger according to claim 1, is characterized in that, described U heat exchange adopts the tubing of ASME BPE standard.