CN201449195U - Heating-medium double-tube plate heat exchanger - Google Patents

Abstract

The utility model discloses a heating-medium double-tube plate heat exchanger with simple manufacture process, high heat transfer efficiency as well as safe and reliable connection of inner tube plates and outer heat exchange tubes. The heating-medium double-tube plate heat exchanger comprises a shell and channel boxes arranged at the two ends of the shell. The end parts of the two sides of the shell are respectively provided with inner tube plates and outer tube plates, a heating-medium cavity is arranged between the inner tube plates and the outer tube plates, and the inner tube plates at the two sides form an inner cavity of the shell. A traverse baffle is arranged in the inner cavity of the shell. The bottom of the heating-medium cavity is provided with a heating-medium emptying tube communicated with the heat-medium cavity, and the top of the heat-medium cavity is provided with an alarming feed nozzle communicated with the heat-medium cavity. A plurality of pairs of inner heat exchange tubes and outer heat exchange tubes which are sleeved together penetrate through the inner cavity of the shell, a heating-medium channel is arranged between the inner heat exchange tubes and the outer heat exchange tubes, the two ends of all of the inner heat exchange tubes penetrate through the outer tube plates at the two sides, and the two ends of all of the outer heat exchange tubes penetrate through the inner tube plates at the two sides. The utility model is mainly applied to special occasions strictly prohibiting cross leakage of tubes and tube shell pass medium in industries of petroleum, chemical engineering, shipping, electricity, pharmacy and the like.

Description

Heating medium double tube plate heat exchanger

Technical field

The utility model relates to the shell-and-tube double tube plate heat exchanger, relates in particular to the heating medium double tube plate heat exchanger in the industries such as being applied to oil, chemical industry, electric power, pharmacy.

Background technology

At present, the shell-and-tube double tube plate heat exchanger overwhelming majority who is applied to industry such as petrochemical industry is the double tube plate heat exchanger of monodromy heat pipe, and this double tube plate heat exchanger can be avoided mixing the serious consequence that causes because of tube-to-tube sheet connection jointing place blow-by tube, shell side two media.But, along with operation hours is more and more longer, heat exchanger tube between shell side all may take place to cause leakage because of corrosion or because of the quality of heat exchanger tube own at any time, pipe, shell side medium string are leaked, cause that product is defective, product rejection and device damage, even can be because two media mixes and chemical reaction takes place cause catastrophic failure.

Along with development of technology, recently the two cooling tube double tube plate heat exchangers that two kinds of forms occurred, a kind of is to add conducting strip between the inside and outside pair of cooling tube, another kind is tube wall fluting, the inside and outside pair of structure that cooling tube fits tightly, these two kinds of structures have solved the existing monodromy heat pipe double tube plate heat exchanger cooling tube back two media that breaks and have mixed the accident cause, but, add the conducting strip structure that quantity does not wait between inside and outside two cooling tube, be difficult to guarantee fitting tightly between the conducting strip and the inside and outside pair of cooling tube, make manufacturing process complexity, heat transfer efficiency low; And tube wall is slotted, the inside and outside pair of structure that cooling tube fits tightly, not only increased operation to the pipe fluting, and require also extremely strict to the fineness and the caliber deviation of pipe, be not easy to meet the demands, have slightly deviation just cause can't poling or tube wall fit not tight, thereby influence heat transfer efficiency; Also there are problems in heat exchanger tube with being connected of internal tube plate in addition, can not realize independent pressure testing of internal tube plate joint and leak detection, in case seepage is arranged, must mend bloated to whole heat exchanger tubes and being connected of internal tube plate, cause workload to increase, some in addition cause to mend and expand excessively, make equipment scrapping.All these has determined two cooling tube double tube plate heat exchangers of these two kinds of forms to be difficult to be applied.

The utility model content

Technical problem to be solved in the utility model is: provide that a kind of manufacturing process is simple, heat transfer efficiency is high and internal tube plate is connected safe and reliable heating medium double tube plate heat exchanger with outer heat exchanger tube.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is: heating medium double tube plate heat exchanger, comprise: housing and the bobbin carriage that the housing two ends are set, in the end of housing both sides is respectively arranged with, outer tube plate, in, be provided with heat medium cavity between the outer tube plate, form the housing inner chamber between the internal tube plate of both sides, be provided with deflection plate in the housing inner chamber, the heat medium cavity bottom is provided with the heating agent emptying mouth of pipe, described heat medium cavity top is provided with to report to the police takes over mouth, be equipped with in the described housing inner chamber be sleeved on together in, outer heat exchanger tube, in, be provided with the heating agent passage between the outer heat exchanger tube, the two ends of heat exchanger tube are located in respectively in the outer tube plate of both sides in all, and the two ends of all outer heat exchanger tubes are located in respectively in the internal tube plate of both sides.

Described outer heat exchanger tube adopts the intensity weldering to be connected with internal tube plate; Heat exchanger tube adopts the intensity weldering to be connected with outer tube plate in described.

The beneficial effects of the utility model: heating medium double tube plate heat exchanger being provided with described in the utility model is used in the heat exchange, outer heat exchanger tube, in, be provided with the heating agent passage between the outer heat exchanger tube, be filled with heating agent in the heating agent passage, like this, no matter interior heat exchanger tube or outer heat exchanger tube damage, medium all only can contact with hot coal earlier and be reported to the police, and can be because of pipe, the shell side medium contacts and has an accident, thereby can guarantee that device security is reliable. simultaneously, outer heat exchanger tube adopts the intensity weldering to be connected with internal tube plate, the tube sheet pipe joint can carry out pressure testing and leak detection separately, in case seepage is found in pressure testing, can only carry out repair welding to seepage place, reduced workload, improved operating efficiency. in addition, because in, outer heat exchanger tube relies on heating agent to conduct heat, not only the heat transfer efficiency height, and in, the tube wall of outer heat exchanger tube need not to fit tightly, pipe fineness and caliber deviation are not had specific (special) requirements, and processing technology is simple, and is easy to make.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the local structure for amplifying schematic diagram of A among Fig. 1.

Among Fig. 1 to Fig. 2: 1, left pipe box, 2, report to the police to take over mouthful, 3, housing, 4, deflection plate, 5, internal tube plate, 6, heat medium cavity, 7, outer tube plate, 8, right pipe box, 9, the tube side dielectric cavity, 10, interior heat exchanger tube, 11, outer heat exchanger tube, 12, the shell side dielectric cavity, 13, the heating agent emptying mouth of pipe.

The specific embodiment

Below in conjunction with accompanying drawing, describe specific embodiments of the present invention in detail.

As shown in Figure 1, heating medium double tube plate heat exchanger described in the utility model, comprise: a housing 3 and a left side that is arranged on housing 3 two ends, right pipe box 1 and 8, in the end of housing 3 both sides is respectively arranged with, outer tube plate 5 and 7, in the homonymy, be provided with heat medium cavity 6 between the outer tube plate 5 and 7, forming the housing inner chamber between the internal tube plate 5 of both sides is shell side dielectric cavity 12, be provided with deflection plate 4 in the shell side dielectric cavity 12, the bottom of heat medium cavity 6 is provided with the heating agent emptying mouth of pipe 13, the top of described heat medium cavity 6 is provided with to report to the police takes over mouth 2, be equipped with in the shell side dielectric cavity 12 some to be sleeved on together in, outer heat exchanger tube 10 and 11, in, between the outer heat exchanger tube 10 and 11 the heating agent passage is set---referring to shown in Figure 2, the two ends of heat exchanger tube 10 are located in respectively in the outer tube plate 7 of both sides in all, and the two ends of all outer heat exchanger tubes 11 are located in respectively in the internal tube plate 5 of both sides.In the present embodiment, outer heat exchanger tube 11 adopts the intensity weldering to be connected with internal tube plate 5, connects the back tube sheet pipe joint and carries out independent pressure testing and leak detection; Interior heat exchanger tube 10 adopts the intensity weldering to be connected with outer tube plate 7.

During practical application, all be filled with heating agent in heat medium cavity 6 and the heating agent passage, inside and outside heat exchanger tube 10 and 11 relies on heating agent to conduct heat.Like this, no matter interior heat exchanger tube 10 or outer heat exchanger tube 11 are damaged, media in tube side dielectric cavity 9 or the shell side dielectric cavity 12 are all only understood heating agent first and in the heating agent passage and are contacted, flow to heat medium cavity 6, and the pressure of heat medium cavity 6 is changed, take over mouth 2 by reporting to the police and reported to the police, can not have an accident, thereby can guarantee the safe and reliable of equipment because of pipe, the direct contact of shell side medium.

Claims (2)

1. heating medium double tube plate heat exchanger, comprise: housing and the bobbin carriage that the housing two ends are set, in the end of housing both sides is respectively arranged with, outer tube plate, in, be provided with heat medium cavity between the outer tube plate, form the housing inner chamber between the internal tube plate of both sides, be provided with deflection plate in the housing inner chamber, the heat medium cavity bottom is provided with the heating agent discharging hole, the top of described heat medium cavity is provided with the warning that communicates with heat medium cavity and takes over mouth, it is characterized in that: be equipped with in the described housing inner chamber be sleeved on together in, outer heat exchanger tube, in, be provided with the heating agent passage between the outer heat exchanger tube, the two ends of heat exchanger tube are located in respectively in the outer tube plate of both sides in all, and the two ends of all outer heat exchanger tubes are located in respectively in the internal tube plate of both sides.

2. heating medium double tube plate heat exchanger as claimed in claim 1 is characterized in that: described outer heat exchanger tube adopts the intensity weldering to be connected with internal tube plate; Heat exchanger tube adopts the intensity weldering to be connected with outer tube plate in described.

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