CN2219478Y

CN2219478Y - Detachable corrosion-proof shell-and-tube heat exchanger

Info

Publication number: CN2219478Y
Application number: CN 95210175
Authority: CN
Inventors: 王平
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-05-12
Filing date: 1995-05-12
Publication date: 1996-02-07
Anticipated expiration: 2005-05-12

Abstract

The utility model relates to a tube-shell type heat exchanger which is mainly suitable for the heat exchange with corrosive mediums and no corrosive mediums. A tube plate is provided with a communicated through hole, an enlarging hole and an inner screw hole from right side to left side, the outer edge of the inner screw hole is also provided with a plurality of radial slots, and a heat exchange tube is sheathed with an elastic tube sleeve which is provided with an outer bulge ring and is arranged in the through hole of the tube plate. An elastic sealing ring is arranged between the enlarging hole of the tube plate and the heat exchange tube, lug check rings are arranged between the radial slots of the tube plate and the heat exchange tube, and a spiral locking ring is arranged in the inner screw hole of the tube plate. Therefore, the utility model can ensure good pressure resistance, can also prevent continuous damages caused by high temperature and expansion, and is also suitable for the heat exchange with the corrosive mediums.

Description

Removable corrosion-resistant shell heat exchanger

The utility model relates to a kind of shell-and-tube heat exchanger, mainly is suitable for having the exchange heat of corrosive medium and no corrosive medium.

At present, common shell-and-tube heat exchanger resistance to pressure is good, and heat conduction efficiency is higher, and still, when fixedlying connected with straight heat exchanger tube owing to the tube sheet in the casing, the elevated temperature heat expansion can cause continuous damage, and mounting or dismounting are inconvenient again, are not suitable for the heat exchange of strong corrosive medium.

In view of this, the purpose of this utility model provides a kind of removable corrosion-resistant shell heat exchanger, between the tube sheet and heat exchanger tube in housing, connects with removable hermetically-sealed construction, is provided with anticorrosive coat on heat exchange pipe external surface, shell inner surface and tube sheet surface again.

The purpose of this utility model is achieved in that it comprises bobbin carriage, tube sheet, housing and heat exchanger tube, on tube sheet, from the right side to the left side, be provided with the through hole of connection, expanded hole and inner bolt hole, also be provided with a plurality of radial slots in the inner bolt hole outer rim again, the elasticity pipe box of sheathed band evagination ring on heat exchanger tube, and place in the through hole of tube sheet, between the expanded hole of tube sheet and heat exchanger tube, be provided with elastic seal ring, in the radial slot of tube sheet and heat exchanger tube, be provided with the lug back-up ring, in the inner bolt hole of tube sheet, be provided with the spiral retainer, in addition, shell inner surface, heat exchange pipe external surface and tube sheet surface all have anticorrosive coat.

Expanded hole on the above-mentioned tube sheet is the taper hole that enlarges left, and above-mentioned lug back-up ring has the conical surface circle that enlarges to the right.

Above-mentioned elastic seal ring is that the cross section is circular rubber ring.

Above-mentioned shell inner surface has enamel polytetrafluoroethylene (PTFE) or fluorubber liner.

Above-mentioned heat exchanger tube is the steel pipe or the iron pipe of outer surface enamel coating.

Above-mentioned tube sheet is the steel plate or the polytetrafluoroethylene (PTFE) fiberglass of surperficial application of slip enamel coating.

Owing to adopt such scheme: can guarantee resistance to pressure good (≤1.6MPa), can prevent again that high temperature expands to cause continuous damage that mounting or dismounting are also convenient, can adapt to no corrosive medium simultaneously and the heat exchange of corrosive medium is arranged.

Below in conjunction with drawings and Examples the utility model is further specified.

The schematic diagram of Fig. 1 the utility model exemplary embodiments.

The A enlarged drawing of Fig. 2 the utility model exemplary embodiments Fig. 1.

The elasticity pipe box part drawing of Fig. 3 the utility model exemplary embodiments.

Among the figure: 1, bobbin carriage 11, tube inlet 12, pipe outlet 2, tube sheet 21, through hole 22, expanded hole 23, inner bolt hole 24, radial slot 3, housing 31, shell inlet 32, shell outlet 4, heat exchanger tube 5, elasticity pipe box 6, elastic seal ring 7, lug back-up ring 8, spiral retainer

Bobbin carriage 1 is upper and lower with the box pipe joint that dividing plate separates, left end seals, right-hand member opens wide, and upper and lower end is respectively equipped with tube inlet 11 and pipe outlet 12, and the upper and lower chamber of right-hand member is respectively through tube sheet 2 connection heat exchanger tubes 4 two-port; Also can adopt two bobbin carriages 1 that separate (being respectively equipped with tube inlet 11 and pipe outlet 12) to replace an above-mentioned bobbin carriage 1.

Tube sheet 2 is arranged on the flat partition board between bobbin carriage 1 and the housing 3, be provided with concentric pylone 21, expanded hole 22 (greater than through hole 21), the inner bolt hole 23 (greater than expanded hole 22) of a plurality of connections in right side to the left side of this tube sheet 2, be provided with a plurality of radial slots 24 (2～3) in inner bolt hole 23 outer rims again; Wherein expanded hole 22 is with conical bore the best, and in addition, steel plate or polytetrafluoroethylene (PTFE) fiberglass that this tube sheet 2 is the enamel superficial layer are all to there being the anti-corrosion function of anticorrosion medium.

Housing 3 is open type housings that right-hand member sealing, left end open wide, and upper and lower end is respectively equipped with shell inlet 31 and shell outlet 32, and these housing 3 inner surfaces have enamel polytetrafluoroethylene (PTFE) or fluorubber liner, play corrosion-resisting function.

Heat exchanger tube 4 is formed (straight tube, U-shaped pipe, disk-shaped tube and compound tube thereof) by many parallel tube banks, these heat exchanger tube 4 two-port are connected symmetrical position, a tube sheet 2 upper and lower chambeies, or be connected on two tube sheets 2 of separation, this heat exchanger tube 4 is the steel pipe or the iron pipe of outer surface enamel coating.

Elasticity pipe box 5 is rubber bush that the surface has prominent ring, this elasticity pipe box 5 is set on the heat exchanger tube 4 and places in the through hole 21 of tube sheet 2, only contact slightly with through hole 21 with its prominent loop section, both played medium (medium is corrosive) decompression damping action, the thermal expansion of (≤180 ℃) distortion in the time of allowing heat exchanger tube 4 high temperature again to (heat exchanger tube is outer) in the housing 3.

Elastic seal ring 6 is rubber ring or rubber rings that polytetrafluoroethylene (PTFE) is sealed, and the cross section is circular best, is enclosed within on the heat exchanger tube 4 and places in the expanded hole 22 of tube sheet 2, and when these elastic seal ring 6 cross sections be circle, expanded hole 22 was a taper seat.

Lug back-up ring 7 is to be made of cylindrical enclosure, the conical surface or plane circle, outerplanar circle and outwardly directed several (2 ,～3) radial lobes; Its cylindrical enclosure endoporus and heat exchanger tube 4 are slidingly matched, and radial lobes is slidingly matched with radial slot 24 two sides of its two sides and tube sheet 2, and restriction lug back-up ring 7 rotates.

Spiral retainer 8 is the external spirals with centre bore (greater than cylindrical enclosure external diameter of lug back-up ring); Be screwed on the inner bolt hole 23 of tube sheet 2,, compress elastic seal ring 6 distortion, to the medium (voltage endurance capability≤1.6MPa) that seals with itself and the corresponding end face of lug (conical surface or plane) pushing lug back-up ring 7; Make the medium (corrosive medium is arranged) in the housing 3 isolated, only can carry out heat exchange with the no corrosive medium in the bobbin carriage 1.

Claims

1, a kind of removable corrosion-resistant shell heat exchanger comprises bobbin carriage, tube sheet, housing and heat exchanger tube, it is characterized in that: the through hole that on tube sheet, from the right side to the left side, is provided with connection, expanded hole and inner bolt hole, also be provided with a plurality of radial slots in the inner bolt hole outer rim again, the worker is with the elasticity pipe box of evagination ring on heat exchanger tube, and place in the through hole of tube sheet, between the expanded hole of tube sheet and heat exchanger tube, be provided with elastic seal ring, between the radial slot of tube sheet and heat exchanger tube, be provided with the lug back-up ring, in the inner bolt hole of tube sheet, be provided with the spiral retainer, in addition, shell inner surface, heat exchange pipe external surface and tube sheet surface all have anticorrosive coat.

2, by the described removable corrosion-resistant shell heat exchanger of claim 1, it is characterized in that: the taper hole of the expanded hole on the above-mentioned tube sheet for enlarging left, above-mentioned lug back-up ring has the conical surface circle that enlarges to the right.

3, by the described removable corrosion-resistant shell heat exchanger of claim 1, it is characterized in that: above-mentioned elastic seal ring is that the cross section is circular rubber ring, or the rubber ring sealed of polytetrafluoroethylene (PTFE).

4, by the described removable corrosion-resistant shell heat exchanger of claim 1, it is characterized in that: above-mentioned shell inner surface has enamel, polytetrafluoroethylene (PTFE) or fluorubber liner.

5, by the described removable corrosion-resistant shell heat exchanger of claim 1, it is characterized in that: above-mentioned heat exchanger tube is the steel pipe or the iron pipe of outer surface enamel coating

6, by the described removable corrosion-resistant shell heat exchanger of claim 1, it is characterized in that: above-mentioned tube sheet is the steel plate or the polytetrafluoroethylene (PTFE) fiberglass of surperficial application of slip enamel coating