CN212645482U

CN212645482U - Tube plate sealing structure

Info

Publication number: CN212645482U
Application number: CN202021342523.1U
Authority: CN
Inventors: 申志波; 张凯; 姚文
Original assignee: SHANXI FENGXI CHEMICAL EQUIPMENT CO Ltd
Current assignee: SHANXI FENGXI CHEMICAL EQUIPMENT CO Ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2021-03-02
Anticipated expiration: 2030-07-10

Abstract

The utility model relates to a heat exchanger structure, in particular to a tube plate sealing structure; the welding device comprises two equipment flanges and a tube plate connected between the two equipment flanges, wherein gaskets are respectively arranged between the tube plate and the two equipment flanges, two groups of welding rings which are symmetrically arranged with the flanges are arranged on the circumference of the tube plate, the two groups of welding rings are respectively welded with the flanges, each group of welding rings comprises a welding ring I and a welding ring II, the two welding rings II are axially adjacent and leave a gap, the two welding rings I are respectively axially connected with the two equipment flanges, the welding ring I and the welding ring II of each group are axially adjacent and the connection surface is an annular step surface, a semicircular ring is arranged on the welding ring II along the radial outer side end part of the welding ring II, and the semicircular rings of the two adjacent welding rings I are spliced to form a hollow circular ring; the utility model has reasonable and novel structural design and reasonable welding ring structure, so that the welding ring II is like a small expansion joint, thereby not only absorbing the stress generated by expansion and contraction, but also preventing the equipment leakage caused by the leakage of the gasket; the safety factor of the equipment is improved.

Description

Tube plate sealing structure

Technical Field

The utility model relates to a heat exchanger structure, concretely relates to tube sheet seal structure.

Background

The safe production is a basic national policy permeating all corners of the industrial production field and is also a content of great importance for the industrial development. At present, the sealing position of a tube plate of a common tube bundle detachable heat exchange device is usually a flange clamping gasket sealing structure. However, in the actual use process of the equipment, the heat exchange equipment usually has the phenomenon of local expansion with heat and contraction with cold, once the sealing part of the tube plate has expansion with heat and contraction with cold, the pretightening force of the fastening bolt is insufficient or the fastening piece is damaged, the gasket is not tightly sealed, even leakage accidents occur, and especially, the safety accidents are easily caused aiming at extremely harmful and explosive media. Therefore, a sealing structure is needed, in the using process of equipment, once the pretightening force of the fastener is insufficient due to expansion with heat and contraction with cold, a device which does not cause medium leakage is not needed, the defects of the common sealing structure are overcome, and the occurrence of safety accidents is avoided.

Disclosure of Invention

The utility model discloses a solve current centre gripping formula tube sheet seal structure and produce expend with heat and contract with cold when equipment operation, cause the bolt pretightning force not enough or the fastener damages, what the problem of emergence leakage provided a tube sheet seal structure, simple structure is reasonable, can not only absorb the stress that expend with heat and contract with cold and produce, can also prevent that gasket department from leaking the equipment leakage phenomenon that causes, improve equipment's factor of safety.

For solving the technical problem, the utility model discloses the technical scheme who adopts does: the utility model provides a tube sheet seal structure, includes two equipment flanges and connects the tube sheet between two equipment flanges, be provided with the gasket between tube sheet and two equipment flanges respectively, the tube sheet border is arranged respectively with two sets of mutual symmetry settings of two equipment flange welded weld the ring, every group welds the ring and all includes and welds ring I and weld ring II, wherein two weld that II axial of ring are adjacent nevertheless leave the clearance, two sets of welding ring I meet with two equipment flange axial respectively, the welding ring I of every group with weld that II axial of ring are adjacent and the face of meeting mutually is cyclic annular ladder face, it is equipped with the semicircle ring along its radial lateral surface tip to weld ring II, two adjacent semicircle rings of welding ring I splice and form a hollow circular ring structure, and two semicircle rings keep away from the one end welding of welding ring II bodies and be in the same place.

The working principle is as follows: when equipment runs, even if leakage occurs in the sealing of the gasket, the leakage of the equipment to the outside cannot be generated, and the whole welding ring forms a closed ring, so that potential safety hazards are avoided. Simultaneously, reasonable welding ring I and welding ring II structure are selected for use in the design, make two adjacent II concatenations of welding ring be like a small-size expansion joint, can compensate the stress that produces of here expend with heat and contract with cold, can block again because of the gasket leaks the passageway that makes the medium outwards leak. Thereby improving the operation safety factor of the equipment and reducing the occurrence of safety accidents.

Compared with the prior art the utility model discloses following beneficial effect has:

the utility model has the advantages of reasonable design and novel, reasonable ring structure that welds makes and welds ring II like a small-size expansion joint, can not only absorb the stress that expend with heat and contract with cold produced, can also prevent that gasket department from leaking the equipment leakage phenomenon that causes. The safety factor of the equipment is improved. The occurrence of safety accidents is reduced.

Drawings

Fig. 1 is a schematic view of the tube plate sealing structure of the present invention.

Fig. 2 is a partial enlarged view at I in fig. 1.

The figures are labeled as follows:

1-equipment flange, 2-tube plate, 3-gasket, 4-welding ring I and 5-welding ring II.

Detailed Description

The present invention will be further described with reference to the following specific examples.

Examples

As shown in fig. 1 and 2, a tube plate sealing structure comprises two equipment flanges 1 and a tube plate 2 connected between the two equipment flanges 1, wherein gaskets 3 are respectively arranged between the tube plate 2 and the two equipment flanges 1, two groups of welding rings which are symmetrically arranged with each other and are respectively welded with the two equipment flanges 1 are arranged around the tube plate 2, each group of welding rings comprises a welding ring i 4 and a welding ring ii 5, wherein the two welding rings ii 5 are axially adjacent and leave a gap, the two welding rings i 4 are respectively axially connected with the two equipment flanges 1, the welding ring i 4 and the welding ring ii 5 of each group are axially adjacent and the connection surface is an annular step surface, and as shown in the figure, the annular step surfaces respectively formed by the two groups of welding rings are also symmetrical with each other; weld II 5 of rings along its radial lateral surface tip and be equipped with the semicircle ring, two adjacent semicircle rings of welding ring I4 splice and form a hollow ring structure, and two semicircle rings keep away from the one end welding of welding ring II 5 body and be in the same place.

The reasonable structure of the welding ring I4 and the welding ring II 5 ensures that two adjacent welding rings II are spliced into a same small expansion joint, thereby not only compensating the stress generated by expansion with heat and contraction with cold at the position, but also blocking a channel for leaking a medium to the outside due to the leakage of a gasket. Thereby improving the operation safety factor of the equipment and reducing the occurrence of safety accidents.

Furthermore, a welding ring I (4) close to one side of the tube plate 2 is welded with the axial butt joint surface of the equipment flange (1), and a welding ring I (4) close to one side of the tube plate (2) is welded with the axial butt joint surface of a welding ring II (5). The welding ring and the tube plate 2 are not welded.

Further, the welding ring I4 comprises a first circular ring, and a second circular ring with the diameter smaller than that of the first circular ring extends from the radial inner end of the first circular ring along the axial direction of the first circular ring; the welding ring II 5 comprises a third circular ring, and a fourth circular ring with the outer diameter equal to but the inner diameter larger than that of the third circular ring extends from the radially outer side end of the third circular ring along the axial direction of the third circular ring; the inner diameters and the outer diameters of the first circular ring and the second circular ring are consistent, and the second circular ring and the fourth circular ring are matched and jointed with each other.

Claims

1. The utility model provides a tube sheet seal structure, includes two equipment flanges (1) and connects tube sheet (2) between two equipment flanges (1), be provided with gasket (3), its characterized in that between tube sheet (2) and two equipment flanges (1) respectively: pipe sheet (2) border is arranged respectively with two sets of mutual symmetries of two equipment flange (1) welded weld the ring, every group welds the ring and all includes and welds ring I (4) and weld ring II (5), wherein two weld ring II (5) axial is adjacent but leave the clearance, two weld ring I (4) meet with two equipment flange (1) axial respectively, the welding of every group encircles I (4) and welds ring II (5) axial adjacent and the face of meeting mutually and be cyclic annular ladder face, it is equipped with the semicircle ring to weld ring II (5) along its radial lateral surface tip, and two adjacent semicircle rings of welding ring I (4) splice and form a hollow ring structure, and two semicircle rings keep away from the one end welding of welding ring II (5) bodies and be in the same place.

2. A tube sheet sealing structure according to claim 1, wherein: the welding ring I (4) close to one side of the tube plate (2) is welded with the axial butt joint surface of the equipment flange (1), and the welding ring I (4) close to one side of the tube plate (2) is welded with the axial butt joint surface of the welding ring II (5).

3. A tube sheet sealing structure according to claim 1, wherein: the welding ring I (4) comprises a first circular ring, and a second circular ring with the diameter smaller than that of the first circular ring extends from the radial inner end of the first circular ring along the axial direction of the first circular ring; the welding ring II (5) comprises a third circular ring, and a fourth circular ring with the outer diameter equal to but the inner diameter larger than that of the third circular ring extends from the radially outer end of the third circular ring along the axial direction of the third circular ring; the inner diameters and the outer diameters of the first circular ring and the second circular ring are consistent, and the second circular ring and the fourth circular ring are matched and jointed with each other.