CN111998701A - Double-sleeve heat exchange device easy to maintain - Google Patents
Double-sleeve heat exchange device easy to maintain Download PDFInfo
- Publication number
- CN111998701A CN111998701A CN202010860311.0A CN202010860311A CN111998701A CN 111998701 A CN111998701 A CN 111998701A CN 202010860311 A CN202010860311 A CN 202010860311A CN 111998701 A CN111998701 A CN 111998701A
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- China
- Prior art keywords
- sleeve
- tube plate
- double
- threaded hole
- pipe plate
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F11/00—Arrangements for sealing leaky tubes and conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
- F28F9/10—Arrangements for sealing elements into header boxes or end plates by dismountable joints by screw-type connections, e.g. gland
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
- F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
- F28F9/266—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators by screw-type connections
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Automatic Assembly (AREA)
Abstract
The invention relates to the technical field of double-sleeve heat exchangers, in particular to a double-sleeve heat exchange device easy to overhaul; the pipe plate connecting device comprises an upper pipe plate, a lower pipe plate, an inner sleeve and an outer sleeve, wherein the upper end of the outer sleeve is welded on the lower pipe plate, a pipe plate threaded hole is formed in the upper pipe plate which is positioned right above the outer sleeve, a pipe plate connecting screw head is arranged in the pipe plate threaded hole, a first external thread is arranged on the outer circular surface of the pipe plate connecting screw head, a screwing block is fixedly connected to the upper surface of the pipe plate connecting screw head, penetrating inner sleeve connecting threaded holes are formed in the pipe plate connecting screw head and the screwing block, a second external thread is arranged on the outer circular surface of the upper end of the inner sleeve, and the; the whole process of removing and replacing the inner sleeve and the outer sleeve is very simple and quick, the 15-30-day maintenance time of the traditional double-sleeve heat exchanger is effectively shortened to several hours, and the huge economic loss of enterprises caused by replacing and maintaining the double sleeves is greatly reduced.
Description
Technical Field
The invention relates to the technical field of double-sleeve heat exchangers, in particular to a double-sleeve heat exchange device easy to overhaul.
Background
The heat exchanger is the most commonly used chemical mechanical equipment in chemical production, and the structural form of the heat exchanger is various, wherein the double-sleeve heat exchange is very suitable for being used in a working environment with large temperature difference of a heat exchange medium due to the special structure of the double-sleeve heat exchange and is commonly used in a synthetic waste heat boiler.
In recent years, double-casing pipes are applied to a shift reaction furnace by design and manufacture units, but due to the special structure of the double-casing pipes, an inner casing pipe and an outer casing pipe are respectively welded on an upper pipe plate and a lower pipe plate in the design and manufacture process, the number of the inner casing pipe and the outer casing pipe on each double-casing pipe heat exchanger is up to hundreds of thousands, and when a few of the outer casing pipes are damaged due to corrosion and the like, media in different areas can flow mutually, so that the double-casing pipe heat exchanger cannot work normally. The traditional double-pipe heat exchanger has the defects that the inner pipe and the outer pipe are difficult to remove and replace, the overhaul time is long, generally 15 days to 30 days, and the economic loss caused to a user unit is huge. Therefore, the design of the double-sleeve heat exchange device easy to overhaul is a technical problem to be solved aiming at the defect that the overhauling time is too long due to the difficulty in dismantling and replacing the inner sleeve and the outer sleeve of the existing double-sleeve heat exchanger.
Disclosure of Invention
The invention aims to solve the technical problem that the maintenance time is too long due to the difficulty in removing and replacing the inner sleeve and the outer sleeve of the traditional double-sleeve heat exchanger after leakage occurs, and designs a double-sleeve heat exchange device easy to maintain.
The invention is realized by the following technical scheme:
the utility model provides an easy double cannula heat transfer device who overhauls, includes tube sheet, lower tube sheet, interior sleeve pipe and outer tube, the upper end welding of outer tube is located on the tube sheet down set up tube sheet screw hole on the last tube sheet directly over the outer tube sheet, be provided with tube sheet connecting screw head in the tube sheet screw hole, the outer disc of tube sheet connecting screw head is provided with the first external screw thread with tube sheet screw hole matched with, the last fixed surface of tube sheet connecting screw head is connected with twists the piece, the interior sleeve connection screw hole that runs through is all seted up on tube sheet connecting screw head and the twisting piece, the outer disc of interior sheathed tube upper end is provided with the second external screw thread with interior sleeve connection screw hole matched with, the inside setting that interior sheathed tube lower extreme stretched into the outer tube.
As a further arrangement of the above scheme, a plurality of outer sleeves are arranged on the lower tube plate, and are uniformly welded on the lower tube plate in a rectangular array, and the upper tube plate above each outer sleeve is provided with a first external thread.
As a further arrangement of the above scheme, a cross-shaped opening is formed on the top end surface of the inner sleeve.
According to the scheme, the first external thread and the tube plate threaded hole are NPT sealed tapered threads, and the second external thread and the inner sleeve connecting threaded hole are also NPT sealed tapered threads.
As a further arrangement of the scheme, high-temperature sealing glue is arranged at the joint of the first external thread and the tube plate threaded hole and at the joint of the second external thread and the inner sleeve connecting threaded hole.
As a further arrangement of the above scheme, the screwing block is a regular polygon cylindrical block.
When one or more outer sleeves are corroded to generate a leak point, an operator clamps a screwing block through a wrench and other tools, the screwing block is rotated by force, so that a tube plate connecting screw head and an inner sleeve at the position are taken out from an upper tube plate together, then the operator puts a plugging plug into the outer sleeve with the leak point through a tube plate threaded hole, the plugging plug is prevented above the leak point, the outer sleeve can be sealed, a heat exchange medium can be prevented from entering between an upper tube plate and a lower tube plate through the leak point, finally the operator uses a standby screw plug to screw into the tube plate threaded hole, the tube plate threaded hole is sealed, and after the tube plate threaded hole is sealed, the whole maintenance process is finished, and the whole double-sleeve heat exchange device can still be normally used.
Has the advantages that:
1. the inner sleeve connected with the upper tube plate can be quickly detached, and the access hole is exposed on the upper tube plate, so that the outer sleeve with leakage points can be conveniently plugged and overhauled in the next step.
2. After the outer sleeve with leakage points is plugged and overhauled by using the plugging plug, an operator can complete all overhauling work by plugging the tube plate threaded hole in the upper tube plate by using the plug, so that the aim of quick overhauling is fulfilled, the whole process of detaching and replacing the inner sleeve and the outer sleeve is very simple and quick, the overhauling time of 15-30 days of the traditional double-sleeve heat exchanger is effectively shortened to a few hours, and the huge economic loss brought to an enterprise by replacing and overhauling the double sleeves is greatly reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a partial front plan view of the present invention;
FIG. 2 is a partial top plan view of the present invention;
FIG. 3 is a partial front plan view of the invention after inspection;
FIG. 4 is a three-dimensional structure view of the connecting screw head and the screwing block of the tube plate in the invention;
FIG. 5 is a partial perspective view of the upper end of the inner sleeve in the present invention;
wherein, 1-an upper tube plate, 2-a lower tube plate, 3-an inner sleeve, 4-an outer sleeve, 5-a tube plate connecting screw head, 6-a twisting block, 7-an inner sleeve connecting threaded hole and 8-a plug;
301-second external thread, 302-cross opening, 501-first external thread, 401-leak point.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The invention discloses a double-sleeve heat exchange device easy to overhaul, which is further described with reference to the attached drawings 1-5.
The invention discloses a double-sleeve heat exchange device easy to overhaul, which refers to an attached drawing 1 and an attached drawing 2, and the main structure of the double-sleeve heat exchange device comprises an upper tube plate 1, a lower tube plate 2, hundreds of inner tubes 3 and outer tubes 4 arranged corresponding to the inner tubes 3. Wherein, the upper end of hundreds of outer sleeves 4 is directly welded on the lower tube plate 2, and the outer sleeves 4 are uniformly welded on the lower tube plate 2 in a rectangular array when being specifically arranged.
Referring to fig. 4 and 5, a tube plate threaded hole (not shown) is formed in the upper tube plate 1 directly above each outer sleeve 4, a tube plate connecting screw head 5 is arranged in each tube plate threaded hole, a first external thread 501 is arranged on the outer circular surface of the tube plate connecting screw head 5, the first external thread 501 is matched with the tube plate threaded hole, in order to achieve a sealing effect during setting, the first external thread 501 and the tube plate threaded hole are NPT-sealed conical threads, and a high-temperature sealant (not shown) is coated between the connection positions of the first external thread 501 and the tube plate threaded hole during screwing. In addition, a screwing block 6 is fixedly connected to the upper surface of the tube plate connecting screw head 5, the screwing block 6 is arranged to facilitate the use of tools to screw the tube plate connecting screw head 5 into or screw the tube plate threaded hole, and specifically, the screwing block 6 may be arranged to be a regular polygon cylindrical block, which is a regular hexagon in the figure of the embodiment.
The tube plate connecting screw head 5 and the screwing block 6 are both provided with a penetrating inner sleeve connecting threaded hole 7, the outer circular surface of the upper end of the inner sleeve 3 is provided with a second outer thread 301 matched with the inner sleeve connecting threaded hole 7, the two threads also adopt NPT sealing tapered threads in order to achieve a sealing effect when connected, and high-temperature sealing glue is coated between the connecting parts. When the upper end of each inner sleeve 3 is connected with each tube plate connecting screw head 5 in a threaded connection mode, the lower end of the inner sleeve 3 extends into the outer sleeve 4.
Finally, a cruciform opening 302 is provided on the top end surface of the inner tube 3, which is mainly used to assist tightening with a cruciform screwdriver.
The invention discloses a specific implementation application and specific operation steps of a double-sleeve heat exchange device easy to overhaul in the specific overhaul and replacement processes, wherein the specific implementation application and the specific operation steps are as follows:
referring to fig. 1 and 3, since the outer wall of the outer jacket tube 4 is in contact with the heat exchange medium for a long time, it is easily corroded, and thus a leak point 401 as shown in fig. 1 occurs.
At the moment, after the maintainer judges which specific outer sleeve 4 has a leak source according to actual conditions, the screwing block 6 on the upper surface of the tube plate connecting screw head 5 is clamped tightly by using a corresponding tool (such as a wrench), and the tube plate connecting screw head 5 is screwed out of the tube plate threaded hole after being rotated, at the moment, the inner sleeve 3 is connected with the tube plate connecting screw head 5, so that the inner sleeve can be pulled out of the outer sleeve 4 together, and the tube plate threaded hole on the tube plate 1 becomes an access hole after being pulled out.
At the moment, the operator plugs the plugging plug 9 into the outer sleeve 4 from the access hole, and the plugging plug 9 is positioned above the leakage point 401 when the plug is plugged, so that the upper end and the lower end of the whole outer sleeve 4 can be sealed by the plugging plug 9, and a heat exchange medium can be prevented from entering between the upper tube plate and the lower tube plate through the leakage point 401.
And finally, the operator uses the spare pipe plug 8 to plug the threaded hole of the pipe plate, and before screwing the pipe plug 8, a layer of high-temperature sealant is coated on the surface of the pipe plug 8 to enhance the sealing property of the connection between the pipe plug 8 and the threaded hole of the pipe plate.
The double-sleeve heat exchange device after the overhaul is finished can refer to an attached drawing 3, the whole process of the outer sleeve 3 with leakage points is quick and convenient, the overhaul time of 15-30 days of the traditional double-sleeve heat exchanger is effectively shortened to several hours, and the huge economic loss brought to enterprises by replacing and overhauling the double sleeves is greatly reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A double-sleeve heat exchange device easy to overhaul comprises an upper tube plate (1), a lower tube plate (2), an inner sleeve (3) and an outer sleeve (4), wherein the upper end of the outer sleeve (4) is welded on the lower tube plate (2), a tube plate threaded hole is formed in the upper tube plate (1) positioned right above the outer sleeve (4), a tube plate connecting screw head (5) is arranged in the tube plate threaded hole, a first external thread (501) matched with the tube plate threaded hole is arranged on the outer circular surface of the tube plate connecting screw head (5), a screwing block (6) is fixedly connected to the upper surface of the tube plate connecting screw head (5), inner sleeve connecting threaded holes (7) which penetrate through the tube plate connecting screw head (5) and the screwing block (6), a second external thread (301) matched with the inner sleeve connecting threaded holes (7) is arranged on the outer circular surface of the upper end of the inner sleeve (3), the lower end of the inner sleeve (3) extends into the inner part of the outer sleeve (4).
2. The easy-to-service double-sleeve heat exchange device of claim 1, wherein: the outer sleeve (4) that sets up on lower tube sheet (2) are a plurality of, and are the even welding of rectangle array form under on tube sheet (2), and are located every first external screw thread (501) have all been seted up on last tube sheet (1) of outer sleeve (4) top.
3. The easy-to-service double-sleeve heat exchange device of claim 1, wherein: the top end surface of the inner sleeve (3) is provided with a cross-shaped opening (302).
4. The easy-to-service double-sleeve heat exchange device of claim 1, wherein: the first external thread (501) and the tube plate threaded hole are NPT sealed tapered threads, and the second external thread (301) and the inner sleeve connecting threaded hole (7) are also NPT sealed tapered threads.
5. The double-sleeve heat exchange device easy to overhaul according to claim 4, wherein a high-temperature sealant is arranged at the joint of the first external thread (501) and the threaded hole of the tube plate and at the joint of the second external thread (301) and the threaded hole (7) of the internal sleeve.
6. The easy-to-service double-sleeve heat exchange device of claim 1, wherein: the screwing block (6) is a regular polygon cylindrical block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010860311.0A CN111998701A (en) | 2020-08-25 | 2020-08-25 | Double-sleeve heat exchange device easy to maintain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010860311.0A CN111998701A (en) | 2020-08-25 | 2020-08-25 | Double-sleeve heat exchange device easy to maintain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111998701A true CN111998701A (en) | 2020-11-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010860311.0A Pending CN111998701A (en) | 2020-08-25 | 2020-08-25 | Double-sleeve heat exchange device easy to maintain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111998701A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446614A (en) * | 2021-06-25 | 2021-09-28 | 宁波久丰热电有限公司 | Flue gas waste heat recovery device |
| CN114294980A (en) * | 2022-01-13 | 2022-04-08 | 吉林建筑大学 | Double-sleeve heat exchange device easy to maintain |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000180089A (en) * | 1998-12-17 | 2000-06-30 | Toyo Radiator Co Ltd | Radiator incorporating oil cooler |
| CN102829654A (en) * | 2012-09-21 | 2012-12-19 | 中冶长天国际工程有限责任公司 | Tube plate-tube bundle assembly, tube type heat exchanger and desorption tower |
| CN203479098U (en) * | 2013-07-25 | 2014-03-12 | 长沙民亿新能源科技有限公司 | Boiler flue gas waste heat recovery device with detachable heat exchange pipes |
| CN203853074U (en) * | 2014-05-05 | 2014-10-01 | 湖南安淳高新技术有限公司 | Heat exchange reactor with pollution discharging and steam supplementing device and heat exchange waste pot |
| CN107049037A (en) * | 2017-04-13 | 2017-08-18 | 宁波云川环保科技有限公司 | A kind of speed heat water dispenser double-jacket tube heated sealed device |
-
2020
- 2020-08-25 CN CN202010860311.0A patent/CN111998701A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000180089A (en) * | 1998-12-17 | 2000-06-30 | Toyo Radiator Co Ltd | Radiator incorporating oil cooler |
| CN102829654A (en) * | 2012-09-21 | 2012-12-19 | 中冶长天国际工程有限责任公司 | Tube plate-tube bundle assembly, tube type heat exchanger and desorption tower |
| CN203479098U (en) * | 2013-07-25 | 2014-03-12 | 长沙民亿新能源科技有限公司 | Boiler flue gas waste heat recovery device with detachable heat exchange pipes |
| CN203853074U (en) * | 2014-05-05 | 2014-10-01 | 湖南安淳高新技术有限公司 | Heat exchange reactor with pollution discharging and steam supplementing device and heat exchange waste pot |
| CN107049037A (en) * | 2017-04-13 | 2017-08-18 | 宁波云川环保科技有限公司 | A kind of speed heat water dispenser double-jacket tube heated sealed device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446614A (en) * | 2021-06-25 | 2021-09-28 | 宁波久丰热电有限公司 | Flue gas waste heat recovery device |
| CN114294980A (en) * | 2022-01-13 | 2022-04-08 | 吉林建筑大学 | Double-sleeve heat exchange device easy to maintain |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201127 |
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| RJ01 | Rejection of invention patent application after publication |