CN205014884U - Heat exchange pipe and pipe plate's mandatory seal structure of non - welding - Google Patents

Heat exchange pipe and pipe plate's mandatory seal structure of non - welding Download PDF

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Publication number
CN205014884U
CN205014884U CN201520761403.8U CN201520761403U CN205014884U CN 205014884 U CN205014884 U CN 205014884U CN 201520761403 U CN201520761403 U CN 201520761403U CN 205014884 U CN205014884 U CN 205014884U
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CN
China
Prior art keywords
tube
sealing structure
tube sheet
tubesheets
heat exchange
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN201520761403.8U
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Chinese (zh)
Inventor
林进华
黄嗣罗
赵梦梦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maoming gravity Petrochemical Equipment Co Ltd
Original Assignee
Challenge Petrochemical Machinery Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Challenge Petrochemical Machinery Corp filed Critical Challenge Petrochemical Machinery Corp
Priority to CN201520761403.8U priority Critical patent/CN205014884U/en
Application granted granted Critical
Publication of CN205014884U publication Critical patent/CN205014884U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a heat exchange pipe and pipe plate's mandatory seal structure of non - welding, includes tube sheet and heat exchange tube, and the tube sheet is equipped with the tube hole, and incline for the shell side for tube side side, opposite side in one side of tube sheet, and wherein, the heat exchange tube passes the tube hole and can dismantle sealing connection in the tube side side with the tube sheet. Adopt this structure, the heat exchange tube need not weld in the tube side of tube sheet side, can be conveniently demolishs heat exchange pipe and pipe plate's hookup location to take the change heat exchange tube out, realize that heat exchange pipe and pipe plate's non - seal connects. To the sleeve pipe, the unable problem of changing the outer tube under the circumstances of not damaging the inner tube is examined in the maintenance process to the equipment of having solved, has improved the utilization ratio of inner tube retrieval and utilization, in addition because the tube sheet with interior union coupling is the mandatory seal structure of non - welded of thin tubesheet structure, this application for the tube sheet does not produce the deformation, is favorable to more sealing. To the monodromy heat pipe, the life of heat exchange tube and the cycle of operation that maintenance, extension equipment were dismantled to the convenience have equally also been improved.

Description

A kind of non-solder forced sealing structure of exchanger tubes and tubesheets
Technical field
The application relates to petrochemical equipment technical field, relate to the waste heat boiler technical field of the superheater of the pre-heat recovery system of heating furnace, chemical fertilizer factory's synthetic ammonia installation and urea plant further, particularly relate to a kind of non-solder forced sealing structure of exchanger tubes and tubesheets.
Background technology
In heat-energy recovering apparatus, the effect of such as primary waste heat boiler is energy recovery, and it is one of key equipment of synthesis ammonia system, and superheater is also the heat-energy recovering apparatus of residual neat recovering system.Heat exchange tube core in above-mentioned heat-energy recovering apparatus generally adopts bayonet tube structure, and this structure is conducive to the circulation of steam, belongs to natural circulation waste-heat boiler.Boiler feedwater is by going waste heat boiler and the heat exchange of high temperature shift gas, and the high steam of generation enters drum by tedge and carries out carbonated drink separation.
Under this kind of operating mode, the corrosion of waste heat boiler pipe bundle core, cracking, damaging the leakage caused is whole the topmost injury pattern of equipment, and restrain core and generally adopt bayonet tube structure, namely each heat exchanger tube is made up of pipe in the sleeve pipe in an outside and inner side, sleeve pipe welds with large tubesheet, interior Guan Yu little tube sheet welds, because structure is special, pyroprocess conductance causes after tube bank outer tube damages and leaks, when this kind of outer tube finds that damage needs to change, first need to strike off pad, in excision, in Guan Houzai extraction, pipe can carry out replacing outer tube, so, interior pipe will be damaged, cause interior pipe cannot reuse, the welding manner of above-mentioned interior tube hydroforming of the prior art cannot change heat exchanger tube separately, the life-span that equipment is run reduces greatly.
In the art, also there is the connected mode that an other class is not the exchanger tubes and tubesheets of sleeve structure, connection due to the tube side side of exchanger tubes and tubesheets is all the modes adopting welding, when causing heat exchanger tube to go wrong needing changing, then need at least to damage section of a pipe could realize, cause the body of heat exchanger tube to be wasted like this, cannot recycle after again keeping in repair again.
Therefore, improve for the problems referred to above of the prior art, how to research and develop a kind of connection hermetically-sealed construction of exchanger tubes and tubesheets, heat exchanger tube can be changed separately with solution and not need the problem of integral replacing heat-exchanging tube bundle, extremely important to the service life of extension device, in field of engineering technology, there is very far-reaching and great meaning.
Summary of the invention
The object of the application be to avoid weak point of the prior art and provide a kind of can avoid damage heat exchange pipe body just can realize exchanger tubes and tubesheets separation, facilitate installation and removal, improve the non-solder forced sealing structure of the exchanger tubes and tubesheets of service life of equipment.
The object of the application is achieved through the following technical solutions:
Provide a kind of non-solder forced sealing structure of exchanger tubes and tubesheets, include tube sheet and heat exchanger tube, described tube sheet is provided with pore, the side of described tube sheet is tube side side, the opposite side of described tube sheet is shell side side, wherein, described heat exchanger tube passes described pore and is connected with described tube sheet removable seal in described tube side side.
Wherein, described tube side side is provided with self-locking pressing sealing structure, and described heat exchanger tube is connected with described tube sheet removable seal in described tube side side by described self-locking pressing sealing structure.
Wherein, described self-locking pressing sealing structure comprises keeper, compressing member, and the seal be arranged between described keeper and described heat exchanger tube, described keeper is fixed on described tube sheet, described keeper offers locating hole, described heat exchanger tube passes described locating hole, and under the effect of described compressing member and described seal, described heat exchanger tube and described tube sheet are tightly connected.
Wherein, described compressing member is provided with external screw thread, and described keeper is provided with the internal thread be connected with described external screw thread.
Wherein, the outer circumferential side of described compressing member is provided with described external screw thread.
Wherein, the outer circumferential side of described compressing member is provided with described external screw thread near a section of described seal.
Wherein, the side that described compressing member abuts described seal is set to the conical surface.
Wherein, described compressing member is abutted with described seal by linear contact lay.
Wherein, described compressing member is abutted with described seal by face contact.
Wherein, described keeper is fixed on described 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, adopt and the syndeton of exchanger tubes and tubesheets is designed to dismountable forced sealing structure, heat exchanger tube does not need to weld in the tube side side of tube sheet, easily the link position of exchanger tubes and tubesheets can be removed, extract out and change heat exchanger tube, the non-solder realizing exchanger tubes and tubesheets is tightly connected.For sleeve pipe, solve the problem cannot changing outer tube in equipment checking maintenance process when not damaging interior pipe, improve the utilization rate of interior pipe reuse, and due to the tube sheet be connected with interior pipe be thin tubesheet structure, the forced sealing structure of the non-solder of the application, tube sheet is made not produce distortion, advantageously in sealing.For monodromy heat pipe, also improve the service life of heat exchanger tube equally and be easy to remove and repair, the cycle of operation of extension device.
Accompanying drawing explanation
Utilize accompanying drawing to be described further application, but the embodiment in accompanying drawing does not form any restriction to the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the following drawings.
Fig. 1 is the structural representation of the non-solder forced sealing structure of a kind of exchanger tubes and tubesheets of the application.
Include in FIG:
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.
Detailed description of the invention
With the following Examples the application is further described.
embodiment 1
One of detailed description of the invention of the non-solder forced sealing structure of a kind of exchanger tubes and tubesheets of the application, as shown in Figure 1, comprise tube sheet 2 of the prior art and heat exchanger tube 1, described tube sheet 2 is provided with pore, the side of described tube sheet 2 is tube side side A, the opposite side of described tube sheet 2 is shell side side B, and the improvement of the application is, described heat exchanger tube 1 passes described pore and is connected with described tube sheet 2 removable seal at described tube side side A.Adopt and heat exchanger tube 1 and the syndeton of tube sheet 2 are designed to dismountable forced sealing structure, heat exchanger tube 1 does not need to weld at the tube side side A of tube sheet 2, easily the link position of heat exchanger tube 1 with tube sheet 2 can be removed, extract out and change heat exchanger tube 1, realize heat exchanger tube 1 and be tightly connected with the non-solder of tube sheet 2.For sleeve pipe, solve the problem cannot changing outer tube in equipment checking maintenance process when not damaging interior pipe, improve the utilization rate of interior pipe reuse, and due to the tube sheet 2 be connected with interior pipe be thin tubesheet structure, the forced sealing structure of the non-solder of the application, tube sheet 2 is made not produce distortion, advantageously in sealing.For monodromy heat pipe 1, also improve the service life of heat exchanger tube 1 equally and be easy to remove and repair, the cycle of operation of extension device.
embodiment 2
The detailed description of the invention two of the non-solder forced sealing structure of a kind of exchanger tubes and tubesheets of the application, as shown in Figure 1, the main technical schemes of the present embodiment is identical with embodiment 1, in the present embodiment unaccounted feature, adopt the explanation in embodiment 1, no longer repeat at this.The difference of the present embodiment and embodiment 1 is, described tube side side A is provided with self-locking pressing sealing structure, and described heat exchanger tube 1 is connected with described tube sheet 2 removable seal at described tube side side A by described self-locking pressing sealing structure.This self-tightening pressing sealing structure is by applying axial compressive force to limit heat exchanger tube 1 axial displacement and circumferential displacement.
Concrete, described self-locking pressing sealing structure comprises keeper 3, compressing member 5, and the seal 4 be arranged between described keeper 3 and described heat exchanger tube 1, described keeper 3 is fixed on described tube sheet 2, described keeper 3 offers locating hole, described heat exchanger tube 1 passes described locating hole, and under the effect of described compressing member 5 and described seal 4, described heat exchanger tube 1 is tightly connected with described tube sheet 2.Heat exchanger tube 1 passes the locating hole at pore and keeper 3 center, between keeper 3 and heat exchanger tube 1, adopt seal 4 to seal by reserved gap, heat exchanger tube 1, keeper 3, seal 4 compress by arranging compressing member 5 by the outside of keeper 3, by this structure, heat exchanger tube 1 can not carry out welding with tube sheet 2 and just can realize sealing function, avoid the distortion that thin tubesheet produces due to welding, and by taking self-locking pressing sealing structure apart, checking maintenance work can be carried out to equipment tube bank easily.Wherein, keeper 3 can be positioning thread insert, and seal 4 can be gasket seal, and compressing member 5 can be hold-down ring.
Concrete, described compressing member 5 is provided with external screw thread, and described keeper 3 is provided with the internal thread be connected with described external screw thread.The outer circumferential side of described compressing member 5 is provided with described external screw thread.Can also be that the outer circumferential side of described compressing member 5 is provided with described external screw thread near a section of described seal 4.Locating hole after heat exchanger tube 1 passes from tube sheet 2 in the middle of keeper 3 passes, seal 4 is adopted to seal between locating hole and heat exchanger tube 1, outside is tightened by the screw fastening between compressing member 5 and keeper 3, in Renewal process, by unclamping the screw fastening unscrewed between compressing member 5 and keeper 3, dismountable seal 4, therefore can extract heat exchanger tube 1 out easily.
Concrete, the side that described compressing member 5 abuts described seal 4 is set to the conical surface.Described compressing member 5 is abutted with described seal 4 by linear contact lay.Such as described in Fig. 1, seal 4 is under the effect of compressing member 5, and the direction along the inclination conical surface is stretched with sealed airspace; Another kind of technical scheme is, described compressing member 5 is abutted with described seal 4 by face contact, and what contact with described seal 4 here is plane, and namely compressing member 5 just starts the centroclinal formation conical surface to compressing member 5 after the inside one section of transition of outer circumference surface.
Concrete, described keeper 3 is fixed on described tube sheet 2 by spot welding 6.The keeper 3 be arranged on tube sheet 2 carries out spot welding 6 in tube sheet 2 position, does not need all welderings tight.
Finally should be noted that; above embodiment is only in order to illustrate the technical scheme of the application; but not the restriction to the application's protection domain; although done to explain to the application with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical scheme of the application or equivalent replacement, and not depart from essence and the scope of technical scheme.

Claims (10)

1. the non-solder forced sealing structure of an exchanger tubes and tubesheets, include tube sheet and heat exchanger tube, described tube sheet is provided with pore, the side of described tube sheet is tube side side, the opposite side of described tube sheet is shell side side, it is characterized in that: described heat exchanger tube passes described pore and is connected with described tube sheet removable seal in described tube side side.
2. the non-solder forced sealing structure of a kind of exchanger tubes and tubesheets according to claim 1, it is characterized in that: described tube side side is provided with self-locking pressing sealing structure, described heat exchanger tube is connected with described tube sheet removable seal in described tube side side by described self-locking pressing sealing structure.
3. the non-solder forced sealing structure of a kind of exchanger tubes and tubesheets according to claim 2, it is characterized in that: described self-locking pressing sealing structure comprises keeper, compressing member, and the seal be arranged between described keeper and described heat exchanger tube, described keeper is fixed on described tube sheet, described keeper offers locating hole, described heat exchanger tube passes described locating hole, and under the effect of described compressing member and described seal, described heat exchanger tube and described tube sheet are tightly connected.
4. the non-solder forced sealing structure of a kind of exchanger tubes and tubesheets according to claim 3, is characterized in that: described compressing member is provided with external screw thread, and described keeper is provided with the internal thread be connected with described external screw thread.
5. the non-solder forced sealing structure of a kind of exchanger tubes and tubesheets according to claim 4, is characterized in that: the outer circumferential side of described compressing member is provided with described external screw thread.
6. the non-solder forced sealing structure of a kind of exchanger tubes and tubesheets according to claim 4, is characterized in that: the outer circumferential side of described compressing member is provided with described external screw thread near a section of described seal.
7. the non-solder forced sealing structure of a kind of exchanger tubes and tubesheets according to claim 3, is characterized in that: the side that described compressing member abuts described seal is set to the conical surface.
8. the non-solder forced sealing structure of a kind of exchanger tubes and tubesheets according to claim 7, is characterized in that: described compressing member is abutted with described seal by linear contact lay.
9. the non-solder forced sealing structure of a kind of exchanger tubes and tubesheets according to claim 7, is characterized in that: described compressing member is abutted with described seal by face contact.
10. the non-solder forced sealing structure of a kind of exchanger tubes and tubesheets according to claim 3, is characterized in that: described keeper is fixed on described tube sheet by spot welding.
CN201520761403.8U 2015-09-29 2015-09-29 Heat exchange pipe and pipe plate's mandatory seal structure of non - welding Withdrawn - After Issue CN205014884U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520761403.8U CN205014884U (en) 2015-09-29 2015-09-29 Heat exchange pipe and pipe plate's mandatory seal structure of non - welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520761403.8U CN205014884U (en) 2015-09-29 2015-09-29 Heat exchange pipe and pipe plate's mandatory seal structure of non - welding

Publications (1)

Publication Number Publication Date
CN205014884U true CN205014884U (en) 2016-02-03

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Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105202963A (en) * 2015-09-29 2015-12-30 茂名重力石化机械制造有限公司 Non-welding forced sealing structure for heat exchange tube and tube plate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105202963A (en) * 2015-09-29 2015-12-30 茂名重力石化机械制造有限公司 Non-welding forced sealing structure for heat exchange tube and tube plate
CN105202963B (en) * 2015-09-29 2017-12-08 茂名重力石化装备股份公司 A kind of non-solder forced sealing structure of exchanger tubes and tubesheets

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP03 Change of name, title or address

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

Patentee after: Maoming gravity Petrochemical Equipment Co Ltd

Address before: 525024 Maoming City, Guangdong Province West Road, Maoming City, the gravity of the Petrochemical Machinery Manufacturing Co., Ltd.,

Patentee before: The Challenge Petrochemical Machinery Corporation

AV01 Patent right actively abandoned
AV01 Patent right actively abandoned

Granted publication date: 20160203

Effective date of abandoning: 20171208