CN105202963B - A kind of non-solder forced sealing structure of exchanger tubes and tubesheets - Google Patents

A kind of non-solder forced sealing structure of exchanger tubes and tubesheets Download PDF

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Publication number
CN105202963B
CN105202963B CN201510630723.4A CN201510630723A CN105202963B CN 105202963 B CN105202963 B CN 105202963B CN 201510630723 A CN201510630723 A CN 201510630723A CN 105202963 B CN105202963 B CN 105202963B
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China
Prior art keywords
tube
tubesheets
heat exchanger
tube sheet
sealing
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CN201510630723.4A
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CN105202963A (en
Inventor
林进华
黄嗣罗
赵梦梦
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Maoming Gravity Petrochemical Equipment Co Ltd
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Maoming Gravity Petrochemical Equipment Co Ltd
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Abstract

A kind of non-solder forced sealing structure of exchanger tubes and tubesheets of the application, including tube sheet and heat exchanger tube, tube sheet is provided with pore, and the side of tube sheet is tube side side, opposite side is shell side side, wherein, heat exchanger tube with tube sheet removable seal is connected through pore and in tube side side.Using this structure, heat exchanger tube need not be welded in the tube side side of tube sheet, you can easily removed the link position of exchanger tubes and tubesheets, to extract replacing heat exchanger tube out, realized that the non-solder of exchanger tubes and tubesheets is tightly connected.For sleeve pipe, solve the problems, such as that during equipment checking maintenance outer tube can not be changed in the case where not damaging inner tube, improve the utilization rate of inner tube reuse, and the tube sheet due to being connected with inner tube is light wall pipe harden structure, the forced sealing structure of the non-solder of the application, so that tube sheet is not deformed, advantageously in sealing.For monodromy heat pipe, equally also improve the service life of heat exchanger tube and be easy to remove and repair, the cycle of operation of extension device.

Description

A kind of non-solder forced sealing structure of exchanger tubes and tubesheets
Technical field
The application is related to petrochemical equipment technical field, superheater further to the pre- heat recovery system of heating furnace, The waste heat boiler technical field of chemical fertilizer factory's synthetic ammonia installation and urea plant, more particularly to a kind of non-weldering of exchanger tubes and tubesheets Connect forced sealing structure.
Background technology
In heat-energy recovering apparatus, such as the effect of primary waste heat boiler is energy recovery, and it is the key of synthesis ammonia system One of equipment, superheater are also the heat-energy recovering apparatus of residual neat recovering system.Heat exchange tube core one in above-mentioned heat-energy recovering apparatus As use bayonet tubular construction, the structure is advantageous to the circulation of steam, belongs to natural circulation waste-heat boiler.Boiler feedwater is given up by going Heat boiler exchanges heat with high temperature shift gas, and caused high steam enters drum by tedge and carries out steam-water separation.
Under such a operating mode, it is that whole equipment is most main that the burn into of waste heat boiler pipe bundle core, which ftractures, damaged caused leakage, The injury pattern wanted, and restrain core and typically use bayonet tubular construction, i.e. each heat exchanger tube is by the sleeve pipe on the outside of one and inner side Inner tube composition, sleeve pipe welded with large tubesheet, and inner tube is welded with small tube sheet, because structure is special, pyroprocess gas Cause to leak after restraining outer tube damage, when such a outer tube finds that damage needs to change, it is necessary first to strike off pad, cut off Replacing outer tube can be carried out by extracting inner tube after inner tube out again, so, will damage inner tube, cause inner tube can not reuse, it is above-mentioned The welding manner of inner tube of the prior art and tube sheet will be unable to carry out being individually replaced heat exchanger tube so that the life-span of equipment operation is big It is big to reduce.
In the art, the connected mode that other one kind is not the exchanger tubes and tubesheets of sleeve structure also be present, due to The connection of the tube side side of exchanger tubes and tubesheets is by the way of welding, when causing heat exchanger tube to go wrong needs to change, then Need at least damage section of a pipe could realize, so cause the body of heat exchanger tube to waste, can not again after repairing again again Utilize.
Therefore, it is improved for above mentioned problem of the prior art, how researches and develops a kind of connection of exchanger tubes and tubesheets Sealing structure, to solve the problems, such as to be individually replaced heat exchanger tube without integral replacing heat-exchanging tube bundle, to extension device Service life is extremely important, has extremely far-reaching and great meaning in field of engineering technology.
The content of the invention
The purpose of the application is to avoid weak point of the prior art and heat exchanger tube can be avoided damage to by providing one kind Body can be achieved with exchanger tubes and tubesheets separation, convenient installation and dismounting, improve the exchanger tubes and tubesheets of service life of equipment Non-solder forced sealing structure.
The purpose of the application is achieved through the following technical solutions:
A kind of non-solder forced sealing structure of exchanger tubes and tubesheets is provided, includes tube sheet and heat exchanger tube, it is described Tube sheet is provided with pore, and the side of the tube sheet is tube side side, and the opposite side of the tube sheet is shell side side, wherein, the heat exchange Pipe is connected through the pore and in the tube side side with the tube sheet removable seal.
Wherein, the tube side side is provided with self-locking pressing sealing structure, and the heat exchanger tube is compressed by the self-locking and sealed Structure is connected in the tube side side with the tube sheet removable seal.
Wherein, the self-locking pressing sealing structure include keeper, compressing member, and be arranged at the keeper with it is described Seal between heat exchanger tube, the keeper are fixed on the tube sheet, and the keeper offers positioning hole, the heat exchanger tube The positioning hole is passed, in the presence of the compressing member and the seal, the heat exchanger tube is tightly connected with the tube sheet.
Wherein, the compressing member is provided with external screw thread, the keeper is provided be connected with the external screw thread in Screw thread.
Wherein, the outer circumferential side of the compressing member is provided with the external screw thread.
Wherein, the outer circumferential side of the compressing member is provided with the external screw thread close to one section of the seal.
Wherein, the side of the compressing member abutting seal is arranged to the conical surface.
Wherein, the compressing member is abutted by linear contact lay with the seal.
Wherein, the compressing member is contacted by face and abutted with the seal.
Wherein, the keeper is fixed on the tube sheet by spot welding.
The beneficial effect of the application:
The non-solder forced sealing structure of a kind of exchanger tubes and tubesheets of the application, using by the company of exchanger tubes and tubesheets Binding structure is designed as dismountable forced sealing structure, and heat exchanger tube need not be welded in the tube side side of tube sheet, you can side Just the link position of exchanger tubes and tubesheets is removed, extracts out and change heat exchanger tube, realize the non-solder sealing of exchanger tubes and tubesheets Connection.For sleeve pipe, asking for outer tube can not be changed in the case where not damaging inner tube during equipment checking maintenance by solving Topic, improves the utilization rate of inner tube reuse, and the tube sheet due to being connected with inner tube is light wall pipe harden structure, the non-solder of the application Forced sealing structure so that tube sheet is not deformed, advantageously in sealing.For monodromy heat pipe, equally also carry The high service life of heat exchanger tube and it is easy to remove and repair, the cycle of operation of extension device.
Brief description of the drawings
Application is described further using accompanying drawing, but the embodiment in accompanying drawing does not form any restrictions to the application, For one of ordinary skill in the art, on the premise of not paying creative work, it can also be obtained according to the following drawings Its accompanying drawing.
Fig. 1 is a kind of structural representation of the non-solder forced sealing structure of exchanger tubes and tubesheets of the application.
Include in Fig. 1:
1 --- heat exchanger tube,
2 --- tube sheet,
3 --- keeper,
4 --- seal,
5 --- compressing member,
6 --- spot welding,
A --- tube side side, B --- shell side side.
Embodiment
The application is further described with the following Examples.
Embodiment 1
A kind of one of embodiment of non-solder forced sealing structure of exchanger tubes and tubesheets of the application, such as scheme Shown in 1, including tube sheet of the prior art 2 and heat exchanger tube 1, the tube sheet 2 are provided with pore, and the side of the tube sheet 2 is pipe Journey side A, the opposite side of the tube sheet 2 is shell side side B, and the improvement of the application is, the heat exchanger tube 1 through the pore, And it is connected in the tube side side A with the removable seal of tube sheet 2.It is designed as using by the attachment structure of heat exchanger tube 1 and tube sheet 2 Dismountable forced sealing structure, heat exchanger tube 1 need not be welded in the tube side side A of tube sheet 2, you can easily will heat exchange The link position of pipe 1 and tube sheet 2 is removed, and is extracted out and is changed heat exchanger tube 1, realizes that the non-solder sealing of heat exchanger tube 1 and tube sheet 2 connects Connect.For sleeve pipe, solve the problems, such as that during equipment checking maintenance outer tube can not be changed in the case where not damaging inner tube, The utilization rate of inner tube reuse is improved, and the tube sheet 2 due to being connected with inner tube is light wall pipe harden structure, the non-solder of the application Forced sealing structure so that tube sheet 2 is not deformed, advantageously in sealing.For monodromy heat pipe 1, equally also carry The high service life of heat exchanger tube 1 and it is easy to remove and repair, the cycle of operation of extension device.
Embodiment 2
The two of the embodiment of the non-solder forced sealing structure of a kind of exchanger tubes and tubesheets of the application, such as scheme Shown in 1, the main technical schemes of the present embodiment are same as Example 1, in the present embodiment unaccounted feature, using embodiment Explanation in 1, is no longer repeated herein.The present embodiment and the difference of embodiment 1 are that the tube side side A is provided with self-locking Pressing sealing structure, the heat exchanger tube 1 are removable in the tube side side A and the tube sheet 2 by the self-locking pressing sealing structure Unload sealed connection.The self-tightening pressing sealing structure limits the axial displacement of heat exchanger tube 1 and circumferential position by applying axial compressive force Move.
Specifically, the self-locking pressing sealing structure includes keeper 3, compressing member 5, and it is arranged at the keeper 3 With the seal 4 between the heat exchanger tube 1, the keeper 3 is fixed on the tube sheet 2, and the keeper 3 offers positioning Hole, the heat exchanger tube 1 pass the positioning hole, in the presence of the compressing member 5 and the seal 4, the heat exchanger tube 1 with The tube sheet 2 is tightly connected.Heat exchanger tube 1 is through pore and the positioning hole at the center of keeper 3, between keeper 3 and heat exchanger tube 1 Sealed by reserved gap using seal 4, the outside of keeper 3 is by setting compressing member 5 by heat exchanger tube 1, positioning Part 3, seal 4 compress, and by this structure, heat exchanger tube 1 can not carry out welding with tube sheet 2 and can be achieved with sealing function, avoid Thin tubesheet caused deformation due to welding, and by taking self-locking pressing sealing structure apart, easily equipment can be restrained Carry out checking maintenance work.Wherein, keeper 3 can be positioning thread insert, and seal 4 can be gasket seal, and compressing member 5 can be Hold-down ring.
Specifically, the compressing member 5 is provided with external screw thread, the keeper 3 is provided with to be connected with the external screw thread Internal thread.The outer circumferential side of the compressing member 5 is provided with the external screw thread.It is also possible that the outer circumferential side of the compressing member 5 is close One section of the seal 4 is provided with the external screw thread.Heat exchanger tube 1 is worn from the positioning hole among keeper 3 after being passed through from tube sheet 2 Go out, sealed between positioning hole and heat exchanger tube 1 using seal 4, outside is locked into by the screw thread between compressing member 5 and keeper 3 Row is tightened, and in Renewal process, unscrews screw fastening between compressing member 5 and keeper 3 by unclamping, dismountable seal 4, because This can easily extract heat exchanger tube 1 out.
Specifically, the side that the compressing member 5 abuts the seal 4 is arranged to the conical surface.The compressing member 5 is connect by line Touch and abutted with the seal 4.Such as described in Fig. 1, seal 4 is in the presence of compressing member 5, along the direction stretching, extension for tilting the conical surface With sealed airspace;Another technical solution is, the compressing member 5 is contacted by face and abutted with the seal 4, here with it is described What seal 4 contacted is plane, i.e., inclines compressing member 5 is since after the inside one section of transition of outer circumference surface just to the center of compressing member 5 It is oblique into the conical surface.
Specifically, the keeper 3 is fixed on the tube sheet 2 by spot welding 6.The keeper 3 being arranged on the face of tube sheet 2 exists The position of tube sheet 2 carries out spot welding 6, it is not necessary to which all weldering is tight.
Finally it should be noted that above example is only to illustrate the technical scheme of the application, rather than the application is protected The limitation of scope is protected, although being explained with reference to preferred embodiment to the application, one of ordinary skill in the art should Work as understanding, the technical scheme of the application can be modified or equivalent substitution, without departing from the reality of technical scheme Matter and scope.

Claims (8)

1. a kind of non-solder forced sealing structure of exchanger tubes and tubesheets, includes tube sheet and heat exchanger tube, the tube sheet is set There is pore, the side of the tube sheet is tube side side, and the opposite side of the tube sheet is shell side side, it is characterised in that:The heat exchanger tube It is connected through the pore and in the tube side side with the tube sheet removable seal, the tube side side is provided with self-locking compression Sealing structure, the heat exchanger tube are connected by the self-locking pressing sealing structure in the tube side side and the tube sheet removable seal Connect, the self-locking pressing sealing structure includes keeper, compressing member, and is arranged between the keeper and the heat exchanger tube Seal, the keeper is fixed on the tube sheet, and the keeper offers positioning hole, and the heat exchanger tube passes described fixed Position hole, in the presence of the compressing member and the seal, the heat exchanger tube is tightly connected with the tube sheet.
A kind of 2. non-solder forced sealing structure of exchanger tubes and tubesheets according to claim 1, it is characterised in that:Institute State compressing member and be provided with external screw thread, the keeper is provided with the internal thread being connected with the external screw thread.
A kind of 3. non-solder forced sealing structure of exchanger tubes and tubesheets according to claim 2, it is characterised in that:Institute The outer circumferential side for stating compressing member is provided with the external screw thread.
A kind of 4. non-solder forced sealing structure of exchanger tubes and tubesheets according to claim 2, it is characterised in that:Institute The outer circumferential side of compressing member is stated close to the seal one section is provided with the external screw thread.
A kind of 5. non-solder forced sealing structure of exchanger tubes and tubesheets according to claim 1, it is characterised in that:Institute The side for stating the compressing member abutting seal is arranged to the conical surface.
A kind of 6. non-solder forced sealing structure of exchanger tubes and tubesheets according to claim 5, it is characterised in that:Institute Compressing member is stated to abut with the seal by linear contact lay.
A kind of 7. non-solder forced sealing structure of exchanger tubes and tubesheets according to claim 5, it is characterised in that:Institute Compressing member is stated to abut with the seal by face contact.
A kind of 8. non-solder forced sealing structure of exchanger tubes and tubesheets according to claim 1, it is characterised in that:Institute State keeper and the tube sheet is fixed on by spot welding.
CN201510630723.4A 2015-09-29 2015-09-29 A kind of non-solder forced sealing structure of exchanger tubes and tubesheets Active CN105202963B (en)

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Application Number Priority Date Filing Date Title
CN201510630723.4A CN105202963B (en) 2015-09-29 2015-09-29 A kind of non-solder forced sealing structure of exchanger tubes and tubesheets

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CN105202963B true CN105202963B (en) 2017-12-08

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106404576A (en) * 2016-08-23 2017-02-15 上海交通大学 Thread compression type in-circular-pipe test section device
CN106704716A (en) * 2017-01-10 2017-05-24 青岛安能电力环保设备有限公司 Detachable multi-cavity connecting piece sealing structure
CN108507238A (en) * 2018-03-12 2018-09-07 孔瑞清 evaporator and its application in heat pump unit
CN108507401A (en) * 2018-03-12 2018-09-07 孔瑞清 Pipe heat exchanger and its application in biomedical product production technology
CN108759501B (en) * 2018-06-15 2020-06-23 孙崇正 Assembled flue gas condenser

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0334817A1 (en) * 1988-03-24 1989-09-27 BORLETTI CLIMATIZZAZIONE S.r.l. A radiator for motor vehicles
CN202630779U (en) * 2012-05-07 2012-12-26 武汉金中石化工程有限公司 Welding structure of heat exchange tube and tube plate
CN103056580A (en) * 2013-01-17 2013-04-24 苏州海陆重工股份有限公司 Tool for welding of heat exchanging tube and tube plate in waste heat boiler
CN203132414U (en) * 2013-03-19 2013-08-14 中国石油化工股份有限公司 Floating head sealing structure of floating head heat exchanger with built-in packing cavity
CN205014884U (en) * 2015-09-29 2016-02-03 茂名重力石化机械制造有限公司 Heat exchange pipe and pipe plate's mandatory seal structure of non - welding

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0334817A1 (en) * 1988-03-24 1989-09-27 BORLETTI CLIMATIZZAZIONE S.r.l. A radiator for motor vehicles
CN202630779U (en) * 2012-05-07 2012-12-26 武汉金中石化工程有限公司 Welding structure of heat exchange tube and tube plate
CN103056580A (en) * 2013-01-17 2013-04-24 苏州海陆重工股份有限公司 Tool for welding of heat exchanging tube and tube plate in waste heat boiler
CN203132414U (en) * 2013-03-19 2013-08-14 中国石油化工股份有限公司 Floating head sealing structure of floating head heat exchanger with built-in packing cavity
CN205014884U (en) * 2015-09-29 2016-02-03 茂名重力石化机械制造有限公司 Heat exchange pipe and pipe plate's mandatory seal structure of non - welding

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
重叠式多套管换热器结构与管头密封设计;张治川,黄磊,周波;《压力容器》;20120331;第29卷(第3期);22-25,79 *

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Address after: 525024 Guangdong City, Maoming Province Ring West Road, No. 91

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