CN205373463U - Double tube-sheet heat exchanger to prevent cross-contamination - Google Patents

Abstract

The utility model discloses a double-tube plate heat exchanger for preventing cross contamination, which comprises a support, an inner sleeve, a front outer tube plate, a rear outer tube plate, a first front inner tube plate, a first rear inner tube plate, a second front inner tube plate, a second rear inner tube plate, a tube bundle and a baffle component; the first front inner pipe plate, the second rear inner pipe plate and the first rear inner pipe plate are sequentially arranged at intervals along the front-rear direction; two ends of the inner sleeve are respectively expanded and welded on the second front side inner tube plate and the second rear side inner tube plate, and leakage monitoring areas are respectively arranged between the first front side inner tube plate and the second front side inner tube plate and between the first rear side inner tube plate and the second rear side inner tube plate; therefore, the tube pass and the shell pass are respectively connected through the tube plates, cross contamination is effectively prevented, and meanwhile, whether leakage liquid exists or not is observed in real time by utilizing the leakage monitoring area to determine the working state of the heat exchanger.

Description

Double tube-sheet heat exchanger to prevent cross-contamination

technical field

The utility model relates to the technology in the field of heat exchangers, in particular to a double-tube plate heat exchanger for preventing cross-contamination.

Background technique

At present, double-tube-plate heat exchangers are widely used in the pharmaceutical industry and other high-sanitary requirements, such as heating or cooling of pharmaceutical products, cooling or heating of injection water, heating or cooling of purified water, cooling of injection water points, Condensation or cooling of clean steam, temperature control of clean liquid, etc.; however, after a long time of application, looseness between the tube bundle and the tube sheet is likely to cause liquid leakage, resulting in cross-contamination between two different media, resulting in drug loss.

Therefore, a new technical solution needs to be developed to solve the above problems.

Utility model content

In view of this, the utility model aims at the deficiencies in the prior art, and its main purpose is to provide a double-tube-sheet heat exchanger that prevents cross-contamination, which can effectively To prevent cross-contamination, at the same time, use the leakage monitoring area to observe in real time whether there is leakage of liquid to determine the working status of the heat exchanger.

In order to achieve the above object, the utility model adopts the following technical solutions:

A double-tube-sheet heat exchanger for preventing cross-contamination, including a support, an inner casing, a front outer tube sheet, a rear outer tube sheet, a first front inner tube sheet, a first rear inner tube sheet, The second front inner tube sheet, the second rear inner tube sheet, tube bundles and baffle components;

The tube bundle is composed of several heat exchange tubes, the first front inner tube sheet, the second front inner tube sheet, the second rear inner tube sheet, and the first rear inner tube sheet are arranged at intervals in sequence along the front-to-back direction. The first front inner tube sheet, the second front inner tube sheet, the second rear inner tube sheet, and the first rear inner tube sheet are all provided with a number of through holes, and the two ends of the heat exchange tubes extend into the corresponding through holes. and expansion welded on the inner wall of the through hole; the front outer tube plate is provided with a tube pass inlet, and the rear outer tube plate is provided with a tube pass outlet;

The two ends of the inner sleeve are respectively expanded and welded to the second front inner tube plate and the second rear inner tube plate, and the rear shell side inlet and the front side shell side outlet are connected to the inner sleeve; the aforementioned first front side Between the side inner tube sheet and the second front inner tube sheet, and between the first rear inner tube sheet and the second rear inner tube sheet, leakage monitoring areas are respectively provided, and the leakage monitoring areas are provided with transparent connecting shells , the transparent connection shell is connected between the first front inner tube plate and the first front inner tube plate, and a collection cavity for receiving leakage liquid is recessed in the transparent connection shell, and a leakage liquid is arranged in the collection cavity perception sensor;

The baffle assembly includes a number of baffles, the baffles are provided with relief holes for the heat exchange tubes to pass through, and a plurality of notches are formed at intervals on the edges of the baffles.

As a preferred solution, the baffle assembly also includes ribs for connecting and fixing the aforementioned baffles in series, the ribs extend in the same direction as the heat exchange tubes, and the baffles are provided with serial connection holes , the ribs are expanded and welded in the series connection holes, and the ribs are further provided with rib holes for increasing the process flow, and the rib holes pass through both sides of the ribs.

As a preferred solution, the baffles are in the shape of a D-shaped disc, and the baffles are arranged in a staggered manner along the ribs, and the different sides of the adjacent baffles are respectively formed with the inner casing. Make room for gaps.

As a preferred solution, an outer sleeve is sheathed on the outside of the inner sleeve, and a heat insulation cavity is formed between the outer sleeve and the outer wall of the inner sleeve, and the heat insulation cavity is filled with a heat insulation layer.

As a preferred solution, a liquid leakage port is opened at the bottom of the transparent connection shell, a liquid leakage hose is connected to the liquid leakage port, and a switch is provided at the liquid leakage port.

Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be known from the above technical scheme that it mainly prevents cross-contamination by connecting the tube side and the shell side through their respective tube sheets. At the same time, the leakage monitoring area is used to observe in real time whether there is leakage of liquid to determine the working status of the heat exchanger; at the same time, it has the advantages of sufficient heat transfer contact and high heat exchange efficiency.

In order to illustrate the structural features and functions of the utility model more clearly, the utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is the assembly perspective view of the embodiment of the utility model;

Fig. 2 is the sectional view of the embodiment of the utility model;

Fig. 3 is another angle sectional view of the embodiment of the present utility model;

Fig. 4 is a perspective view of a partial structure of an embodiment of the utility model;

FIG. 5 is a schematic structural view of the baffles, the ribs and the heat exchange tubes in this embodiment.

Explanation of the accompanying drawings:

1. Support 2. Inner casing

3. Front outer tube sheet 4. Rear outer tube sheet

5. The first front inner tube sheet 6. The first rear inner tube sheet

7. The second front inner tube sheet 8. The second rear inner tube sheet

9. Outer casing 10. Heat insulation layer

11. Heat exchange tube 12. Tube inlet

13. Tube exit 14. Baffle

15, give way hole 16, notch

17. Rib 18. Rib hole

19. Serial connection hole 20. Rear shell side entrance

21. Front side shell side exit.

detailed description

Please refer to Fig. 1 to Fig. 5, which shows the specific structure of the embodiment of the present invention, which includes a support 1, an inner casing 2, a front outer tube plate 3, a rear outer tube plate 4, The first front inner tube sheet 5, the first rear inner tube sheet 6, the second front inner tube sheet 7, the second rear inner tube sheet 8, the tube bundle and the baffle assembly; the inner casing 2 outer casing An outer sleeve 9 is provided, and a heat insulation cavity is formed between the outer sleeve 9 and the outer wall of the inner sleeve 2, and the heat insulation layer 10 is filled in the heat insulation cavity.

The tube bundle is composed of several heat exchange tubes 11, the first front inner tube sheet 5, the second front inner tube sheet 7, the second rear inner tube sheet 8, and the first rear inner tube sheet 6 in sequence along the front and back direction. The spacing is set, the first front inner tube sheet 5, the second front inner tube sheet 7, the second rear inner tube sheet 8, and the first rear inner tube sheet 6 are all provided with a number of through holes. Both ends of the heat pipe 11 extend into the corresponding through holes and are expanded and welded on the inner wall of the through holes; the front outer tube plate 3 is provided with a tube pass inlet 12, and the rear outer tube plate 4 is provided with a tube pass outlet 13 .

Both ends of the inner sleeve 2 are expanded and welded on the second front inner tube plate 7 and the second rear inner tube plate 8 respectively, and the rear shell side inlet 20 and the front side shell side outlet are connected to the inner sleeve 2 21. Leakage monitoring areas are respectively set between the first front inner tube sheet 5 and the second front inner tube sheet 7, and between the first rear inner tube sheet 6 and the second rear inner tube sheet 8, The leakage monitoring area is provided with a transparent connection shell, which is connected between the first front inner tube sheet and the first front inner tube sheet, and the transparent connection shell is concavely provided with a collector for receiving leakage liquid. cavity, the collection cavity is provided with a leakage sensing sensor; the bottom of the transparent connection shell is provided with a leakage outlet, and the leakage hose is connected to the leakage outlet, and a switch is arranged at the leakage outlet .

The baffle assembly includes a number of baffles 14, and the baffles 14 are provided with relief holes 15 for the heat exchange tubes to pass through, and a plurality of recesses 16 are formed at intervals on the edges of the baffles 14; The baffle assembly also includes ribs 17 for connecting and fixing the aforementioned baffles 14 in series. The ribs 17 extend in the same direction as the heat exchange tubes 11, and the baffles 14 are provided with series connection holes 19. The ribs are expanded and welded in the series connection holes, and the ribs 17 are further provided with rib holes 18 for increasing the flow process, and the rib holes 18 pass through both sides of the ribs 17; as shown in Figure 4, In this embodiment, the baffles 14 are designed as D-shaped discs, and the baffles 14 are arranged in a staggered manner along the upper ribs 17, and the different sides of the adjacent baffles are respectively formed with inner sleeves. There are gaps.

Next, a brief introduction to the general working process of this embodiment is as follows:

When performing heat exchange, one fluid enters through the tube side inlet 12, flows in the heat exchange tube 11, and flows out from the tube side outlet 13, that is, the tube side; the other fluid enters through the rear side shell side inlet 20, and the inner sleeve The flow in the tube 2 (through the baffle plate 14 and the rib plate 17 is a multi-flow flow), and flows out from the outlet 21 of the shell side on the front side, that is, the shell side.

The key point of the design of the utility model is that it mainly connects the tube side and the shell side through their respective tube sheets to effectively prevent cross-contamination. At the same time, it has the advantages of sufficient heat transfer contact and high heat exchange efficiency.

The above are only preferred embodiments of the present utility model, and do not limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model , all still belong to the scope of the technical solution of the utility model.

Claims (5)

1. the dual-tubesheet heat interchanger preventing cross-contamination, it is characterised in that: include bearing, inner sleeve, front side outer tube plate, rear side outer tube plate, internal tube plate on front side of first, internal tube plate on rear side of first, internal tube plate on front side of second, internal tube plate, tube bank and baffling assembly on rear side of second；

This tube bank is made up of some heat exchanger tubes, this internal tube plate on front side of first, internal tube plate on front side of second, internal tube plate on rear side of second, on rear side of first internal tube plate along the longitudinal direction successively spacing arrange, this internal tube plate on front side of first, internal tube plate on front side of second, internal tube plate on rear side of second, all offering some through holes on internal tube plate on rear side of first, described heat exchanger tube two ends are stretched in respective through hole and expanded and welded tube joint is in through-hole wall place；Described front side outer tube plate offers tube-side inlet, outer tube plate offers on rear side of this tube side outlet；

These inner sleeve two ends respectively expanded and welded tube joint on front side of second internal tube plate, on rear side of second on internal tube plate, on inner sleeve, be connected to rear side shell side inlet and front side shell-side outlet；It is respectively arranged with monitoring of leakage district between internal tube plate on rear side of internal tube plate and second on front side of in the of aforementioned first on front side of internal tube plate and second between internal tube plate, on rear side of first, this monitoring of leakage district is provided with transparent connection shell, this transparent connection shell is connected on front side of in the of first on front side of internal tube plate and first between internal tube plate, it is arranged with the collecting chamber for accepting leak fluid in this transparent connection shell, in this collecting chamber, is provided with leakage detecting sensor；

This baffling assembly includes some deflection plates, and this deflection plate offers the resigning hole for heat exchanger tube traverse, and this deflection plate edge space type is formed with multiple notch.

2. the dual-tubesheet heat interchanger preventing cross-contamination according to claim 1, it is characterized in that: described baffling assembly also includes for by floor fixing for aforementioned deflection plate concatenation, this floor is extended in the same direction with heat exchanger tube, described deflection plate offers concatenation hole, described floor expanded and welded tube joint is in concatenation hole, and, described floor offers the floor hole for increasing flow process, through floor both sides, this floor hole further.

3. the dual-tubesheet heat interchanger preventing cross-contamination according to claim 2, it is characterized in that: described deflection plate is D-shaped discoideus, described deflection plate space type interlaced arrangement along floor, the not homonymy of adjacent baffling floor is respectively formed with and is formed with, with inner sleeve, gap of stepping down.

4. the dual-tubesheet heat interchanger preventing cross-contamination according to claim 1, it is characterised in that: described inner sleeve outer cover is provided with trocar sheath, is formed with heat-insulation chamber between this trocar sheath and inner sleeve outer wall, is filled with thermal insulation layer in this heat-insulation chamber.

5. the dual-tubesheet heat interchanger preventing cross-contamination according to claim 1, it is characterised in that: the row's of offering leakage mouth bottom described transparent connection shell, described row's leakage mouth is connected to leakage flexible pipe, and, this row's leakage mouth place is provided with switch.