CN210802198U - Incomplete core pulling device for portable heat exchanger - Google Patents
Incomplete core pulling device for portable heat exchanger Download PDFInfo
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- CN210802198U CN210802198U CN201921464656.3U CN201921464656U CN210802198U CN 210802198 U CN210802198 U CN 210802198U CN 201921464656 U CN201921464656 U CN 201921464656U CN 210802198 U CN210802198 U CN 210802198U
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- half ring
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Abstract
The utility model relates to a nuclear power maintenance technical field specifically discloses a portable heat exchanger device of loosing core incompletely, when dismantling tube sheet flange and heat-transfer pipe, upper half ring and lower half ring pass through the bolt and install on the tube sheet flange, and wherein the kicking block is located and keeps away from barrel flange one side, and the strengthening rib is located and is close to barrel flange one side; and hydraulic jacks are arranged between the four jacking blocks and the cylinder flange, and act on the cylinder flange and the jacking blocks respectively, so that the tube plate flange and the heat transfer tube are pushed out of the cylinder flange together, the disassembly is completed, and the incomplete core pulling operation of the tube plate of the heat exchanger is realized. Adopt the utility model discloses the device is more convenient on the maintenance scheme, has avoided whole great work load of loosing core and bringing, simultaneously, and this device is more simple and convenient in dismouting modes such as traditional chain block, guide rail operation relatively, only through the jack dismantle can, improved work efficiency greatly.
Description
Technical Field
The utility model belongs to the technical field of the nuclear power maintenance, concretely relates to incomplete device of loosing core of portable heat exchanger.
Background
The drain cooler of Fuqing nuclear power STR system is a horizontal U-shaped tube heat exchanger, a tube box, a tube plate and a shell are connected through flanges, the flange leakage defect occurs in the operation process, the leakage point is at the joint of the tube plate flange and a barrel flange, if the gasket at the position needs to be replaced, a guide rail is arranged below the tube plate to support and guide in the traditional method, a plurality of lifting points are matched above the guide rail, the flange surface is pried open through tools such as a crowbar, and the tube plate and tube bundle assembly is drawn out by combining tools such as a chain block and a hanging strip to replace the gasket.
The traditional maintenance method is complex in operation, heavy in maintenance workload, time-consuming and labor-consuming. It is therefore desirable to design a new and more portable service device.
Disclosure of Invention
An object of the utility model is to provide a device is not loosed core completely to portable heat exchanger can reduce the work of loosing core of onerous whole.
The technical scheme of the utility model as follows:
a portable incomplete core-pulling device for a heat exchanger can be fixed on a cylinder flange of a heat exchanger cylinder, and a tube plate flange and a heat transfer tube inserted in the tube plate flange are drawn out, so that a gasket can be conveniently replaced subsequently;
the device comprises an upper semi-ring, a lower semi-ring, a bolt and a hydraulic jack;
the two ends of the upper half ring and the lower half ring are fastened through bolts respectively to form a circular ring shape, and four reinforcing ribs are welded at the joint of the two ends of the upper half ring and the lower half ring to prevent deformation during fastening;
four jacking blocks are arranged on the circular ring formed by the upper half ring and the lower half ring at equal intervals, wherein two jacking blocks are arranged on the upper half ring, and two jacking blocks are arranged on the lower half ring;
the bottom surface of the top block and the reinforcing ribs are respectively positioned on the end surfaces of the two sides of the upper half ring and the lower half ring;
when the tube plate flange and the heat transfer tube are disassembled, the upper half ring and the lower half ring are installed on the tube plate flange through bolts, wherein the top block is located on one side far away from the cylinder body flange, and the reinforcing ribs are located on one side close to the cylinder body flange and can reserve operation space for bolt fastening;
hydraulic jacks are arranged between the four jacking blocks and the cylinder flange, and act on the cylinder flange and the jacking blocks respectively, so that the tube plate flange and the heat transfer tube are pushed out of the cylinder flange together, disassembly is completed, and incomplete core pulling operation of the tube plate of the heat exchanger is realized.
The middle position of the top of the upper half ring is welded with a lifting lug, and the lifting lug can be adjusted through a chain block and is used for preventing the tube plate flange and the heat transfer tube from sinking due to self weight after being separated from the heat exchanger cylinder.
And a cushion block is arranged between the hydraulic jack and the cylinder flange and is used for compensating the stroke of the hydraulic jack.
The diagonal connecting lines of the four jacking blocks form an included angle of 45 degrees with the vertical line.
And a gap is reserved between the upper half ring and the lower half ring, so that the bolt can be loaded with pretightening force conveniently.
And the top block is connected with the upper half ring and the lower half ring in a welding way.
The bolt is a standard component.
The heat exchanger further comprises four U-shaped structural members, and the four U-shaped structural members are used for providing stress pivots for the hydraulic jack when the pipe plate flange and the heat transfer pipe are installed back.
When the tube plate flange and the heat transfer tube are reassembled, the upper half ring and the lower half ring are installed on the tube plate flange through bolts, wherein the top block is located on one side far away from the cylinder flange, and the reinforcing rib is located on one side close to the cylinder flange; one sides of the four U-shaped structural members are fixed on the cylinder flange at equal intervals, and the other sides of the four U-shaped structural members are positioned on the outer side of the top block; the four hydraulic jacks are arranged between the outer sides of the four jacking blocks and the other sides of the four U-shaped structural members, and the tube plate flange and the heat transfer tube are pressed into the barrel flange by operating the four hydraulic jacks, so that the tube plate flange and the heat transfer tube are assembled back.
The beneficial effects of the utility model reside in that:
(1) adopt the utility model discloses the device is more convenient on the maintenance scheme, has avoided whole great work load of loosing core and bringing, simultaneously, and this device is more simple and convenient in dismouting modes such as traditional chain block, guide rail operation relatively, only through the jack dismantle can, improved work efficiency greatly.
(2) The utility model discloses the device is fixed through the design of pure machinery, and equipment structure is simple, uses conventional material and standard component, the preparation of being convenient for process, and the body is light, portable and installation operation.
Drawings
FIG. 1 is a plan view of an incomplete core pulling device;
FIG. 2 is a perspective view of the incomplete core pulling device;
FIG. 3 is a schematic view of a disassembled tube sheet bundle assembly;
FIG. 4 is a schematic view of a retro-fit tube sheet bundle assembly.
In the figure: 1. an upper half ring; 2. a top block; 3. lifting lugs; 4. reinforcing ribs; 5. a lower half ring; 6. a bolt; 7. a heat exchanger cylinder; 8. a cylinder flange; 9. cushion blocks; 10. a tube sheet flange; 11. a hydraulic jack; 12. a heat transfer tube; 13. u type structure.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the portable incomplete core-pulling device for a heat exchanger can be fixed on a cylinder flange 8 of a heat exchanger cylinder 7, a tube plate flange 10 and a heat transfer tube 12 inserted in the tube plate flange 10 are drawn out, so that gasket replacement is convenient for follow-up operation, and the incomplete core-pulling device comprises an upper half ring 1, a lower half ring 5, a hydraulic jack 11 and a U-shaped structural member 13.
The two ends of the upper half ring 1 and the lower half ring 5 are fastened through bolts 6 respectively to form a circular ring shape, and four reinforcing ribs 4 are welded at the joint of the two ends of the upper half ring 1 and the lower half ring 5 to prevent deformation during fastening. The bolt 6 is a standard component. A gap is reserved between the upper half ring 1 and the lower half ring 5, so that the bolt 6 can be loaded with pretightening force conveniently.
Four jacking blocks 2 are welded on a circular ring formed by the upper half ring 1 and the lower half ring 5 at equal intervals, wherein two jacking blocks are arranged on the upper half ring 1, and two jacking blocks are arranged on the lower half ring 5. The diagonal connecting lines of the four top blocks 2 form an included angle of 45 degrees with the vertical line.
The bottom surface of the top block 2 and the reinforcing ribs 4 are respectively positioned on the end surfaces of two sides of the upper half ring 1 and the lower half ring 5.
The middle position of the top of the upper half ring 1 is welded with a lifting lug 3 which can be adjusted by a chain block and is used for preventing the tube plate flange 10 and the heat transfer tube 12 from sinking due to self weight after being separated from the heat exchanger cylinder 7.
As shown in fig. 3, when the tube plate flange 10 and the heat transfer tubes 12 are disassembled, the upper half ring 1 and the lower half ring 5 are installed on the tube plate flange 10 through bolts 6, wherein the top block 2 is located on the side far away from the cylinder flange 8, and the reinforcing ribs 4 are located on the side close to the cylinder flange 8, so that operating space can be reserved for fastening the bolts 6.
And a cushion block 9 is arranged between the hydraulic jack 11 and the cylinder flange 8 and is used for compensating the stroke of the hydraulic jack 11.
The number of the U-shaped structural members 13 is four, and the U-shaped structural members are used for providing stress supporting points for the hydraulic jacks 11 when the pipe plate flanges 10 and the heat transfer pipes 12 are installed back.
As shown in fig. 4, when the tube plate flange 10 and the heat transfer tubes 12 are reinstalled, the upper half ring 1 and the lower half ring 5 are installed on the tube plate flange 10 through bolts 6, wherein the top block 2 is located on the side far away from the cylinder flange 8, and the reinforcing ribs 4 are located on the side close to the cylinder flange 8; one sides of the four U-shaped structural members 13 are fixed on the cylinder flange 8 at equal intervals, and the other sides are positioned on the outer side of the top block 2. The four hydraulic jacks 11 are arranged between the outer sides of the four jacking blocks 2 and the other sides of the four U-shaped structural members 13, and the tube plate flange 10 and the heat transfer tube 12 are pressed into the barrel flange 8 together by operating the four hydraulic jacks 11, so that the tube plate flange 10 and the heat transfer tube 12 are installed back.
Claims (9)
1. The utility model provides a device of incompletely loosing core of portable heat exchanger which characterized in that: the gasket can be fixed on a cylinder flange (8) of a heat exchanger cylinder (7), and the tube plate flange (10) and the heat transfer tube (12) inserted in the tube plate flange (10) are drawn out, so that gasket replacement is convenient to perform subsequently;
the device comprises an upper semi-ring (1), a lower semi-ring (5), a bolt (6) and a hydraulic jack (11);
two ends of the upper half ring (1) and the lower half ring (5) are fastened through bolts (6) respectively to form a circular ring shape, and four reinforcing ribs (4) are welded at the joint of the two ends of the upper half ring (1) and the lower half ring (5) together to prevent deformation during fastening;
four jacking blocks (2) are arranged on a circular ring formed by the upper half ring (1) and the lower half ring (5) at equal intervals, wherein two jacking blocks are arranged on the upper half ring (1), and two jacking blocks are arranged on the lower half ring (5);
the bottom surface of the top block (2) and the reinforcing ribs (4) are respectively positioned on the end surfaces of two sides of the upper half ring (1) and the lower half ring (5);
when the tube plate flange (10) and the heat transfer tube (12) are disassembled, the upper half ring (1) and the lower half ring (5) are installed on the tube plate flange (10) through bolts (6), wherein the top block (2) is located on one side far away from the cylinder flange (8), the reinforcing ribs (4) are located on one side close to the cylinder flange (8), and an operation space can be reserved for fastening the bolts (6);
the tube plate heat exchanger is characterized in that hydraulic jacks (11) are arranged between the four jacking blocks (2) and the cylinder flange (8), the hydraulic jacks (11) are respectively used on the cylinder flange (8) and the jacking blocks (2), the tube plate flange (10) and the heat transfer tube (12) are pushed out of the cylinder flange (8) together, disassembly is completed, and incomplete core pulling operation of the tube plate of the heat exchanger is realized.
2. The incomplete core pulling device for the portable heat exchanger as claimed in claim 1, wherein: the heat exchanger is characterized in that a lifting lug (3) is welded in the middle of the top of the upper half ring (1) and can be adjusted through a chain block, and the lifting lug is used for preventing the tube plate flange (10) and the heat transfer tube (12) from sinking due to self weight after being separated from the heat exchanger cylinder (7).
3. The incomplete core pulling device for the portable heat exchanger as claimed in claim 2, wherein: and a cushion block (9) is arranged between the hydraulic jack (11) and the cylinder flange (8) and is used for compensating the stroke of the hydraulic jack (11).
4. The incomplete core pulling device for the portable heat exchanger as claimed in claim 3, wherein: the diagonal connecting lines of the four top blocks (2) form an included angle of 45 degrees with the vertical line.
5. The incomplete core pulling device for the portable heat exchanger as claimed in claim 4, wherein: a gap is reserved between the upper half ring (1) and the lower half ring (5), so that the bolt (6) can be loaded with pretightening force conveniently.
6. The incomplete core pulling device for the portable heat exchanger as claimed in claim 5, wherein: the ejector block (2) is connected with the upper half ring (1) and the lower half ring (5) in a welding mode.
7. The incomplete core pulling device for the portable heat exchanger as claimed in claim 6, wherein: the bolt (6) is a standard component.
8. The incomplete core pulling device for the portable heat exchanger according to any one of claims 1 to 7, wherein: the device is characterized by further comprising four U-shaped structural members (13), wherein the four U-shaped structural members (13) are used for providing stress supporting points for the hydraulic jack (11) when the pipe plate flange (10) and the heat transfer pipe (12) are installed back.
9. The incomplete core pulling device for the portable heat exchanger as claimed in claim 8, wherein: when the tube plate flange (10) and the heat transfer tube (12) are reassembled, the upper half ring (1) and the lower half ring (5) are installed on the tube plate flange (10) through bolts (6), wherein the top block (2) is located on one side far away from the cylinder flange (8), and the reinforcing ribs (4) are located on one side close to the cylinder flange (8); one sides of the four U-shaped structural members (13) are fixed on the cylinder flange (8) at equal intervals, and the other sides are positioned on the outer side of the top block (2); the four hydraulic jacks (11) are arranged between the outer sides of the four jacking blocks (2) and the other sides of the four U-shaped structural members (13), and the tube plate flange (10) and the heat transfer tube (12) are pressed into the barrel flange (8) by operating the four hydraulic jacks (11), so that the tube plate flange (10) and the heat transfer tube (12) are installed again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921464656.3U CN210802198U (en) | 2019-09-05 | 2019-09-05 | Incomplete core pulling device for portable heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921464656.3U CN210802198U (en) | 2019-09-05 | 2019-09-05 | Incomplete core pulling device for portable heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210802198U true CN210802198U (en) | 2020-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921464656.3U Active CN210802198U (en) | 2019-09-05 | 2019-09-05 | Incomplete core pulling device for portable heat exchanger |
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| Country | Link |
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| CN (1) | CN210802198U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455110A (en) * | 2019-09-05 | 2019-11-15 | 福建福清核电有限公司 | A kind of incomplete core-pulling device of Portable heat exchanger |
-
2019
- 2019-09-05 CN CN201921464656.3U patent/CN210802198U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455110A (en) * | 2019-09-05 | 2019-11-15 | 福建福清核电有限公司 | A kind of incomplete core-pulling device of Portable heat exchanger |
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