CN107084887B - Detachable tube bundle tube side reliability pressure testing device - Google Patents
Detachable tube bundle tube side reliability pressure testing device Download PDFInfo
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- CN107084887B CN107084887B CN201710491612.9A CN201710491612A CN107084887B CN 107084887 B CN107084887 B CN 107084887B CN 201710491612 A CN201710491612 A CN 201710491612A CN 107084887 B CN107084887 B CN 107084887B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention discloses a detachable tube bundle tube side reliability pressure testing device which comprises a fixed end flange cover, a heat exchange tube, a fixed end sealing ring, a fixed end O-ring, a fixed end stud, a fixed end nut, a tube seat, a limit cylinder, a fixed tube plate, a split wedge-shaped ring, a fixed end hook ring, a distance tube, a baffle plate, a support plate, a pull rod nut, a pull rod, a floating end hook ring, a floating tube plate, a floating end stud, a floating end flange cover, a floating end nut, a floating end O-ring, a floating end sealing ring and the like. When pressure test is performed, the split wedge ring positioned at the fixed end is strictly limited in the limit cylinder, and the hook ring at the fixed end is in self-locking relation with the split wedge ring, so that the pressure test process has high reliability; also, the floating end has high reliability. The fixed end sealing ring and the floating end sealing ring are respectively provided with a ring groove for placing the O-shaped ring, so that the sealing capacity is high, the sealing device can bear the pressure of tens of megapascals, and the sealing device is particularly suitable for the high-pressure test occasion of the tube side. The invention solves the defects that the installation of a general detachable tube bundle tube side pressure test tool is complex, the safety is poor, the sealing performance is poor, and the high pressure test cannot be realized.
Description
Technical Field
The invention relates to the technical field of shell-and-tube heat exchangers, in particular to a detachable tube bundle tube side reliability pressure testing device convenient for flexible testing.
Background
The shell-and-tube heat exchanger belongs to a dividing wall type heat exchanger, and is divided into a tube side and a shell side. According to the process requirement, different parameters and different types of mediums are respectively flowed in the tube pass and the shell pass and used for heating or cooling the required mediums. The floating head type and U-shaped tube type heat exchangers are typical structures, are mainly used in occasions where the temperature difference between the tube and the shell side is large and the tube bundle needs frequent cleaning, and are the main structural types in the refining industry. In the manufacturing and overhauling process, the pressure test of the tube head (the connecting joint of the tube plate and the heat exchange tube) is required to be carried out on the detachable tube bundle, and the pressure test can be realized only by designing a special shell side pressure test tool, so that the pressure test cost is increased.
When the heat exchange tubes are arranged in square, and the tube side test pressure value is greater than or equal to the shell side test pressure, the tube side pressure test can be used for replacing the shell side pressure test. At this time, the leakage condition is checked from the back of the tube plate by means of the peeping mirror, and the mark of the leakage tube head is made according to the position of the tube distribution diagram, so that the accurate position can be quickly found during repair. The shell side pressure test can be realized.
In order to realize tube side pressure test, a tube box, a floating head cover and a hook ring of original equipment can be adopted, but the design of a flange ring connected with the tube box through a fastener is a difficult problem. From the safety aspect, the flange ring is of an integral structure, but almost the whole tube bundle, such as a floating tube plate, a supporting plate, a baffle plate and the like, needs to be sequentially penetrated when being installed, and the implementation difficulty is very high for the occasion that the tube bundle is usually horizontal and supported at the bottom of the tube bundle, so that the application is not needed in engineering.
In order to smoothly carry out the pressure test process, the flange ring is generally required to be split, so that the flange ring can be installed from the side, the difficulty of passing through the tube bundle is avoided, and in order to avoid the split flange ring from being scattered, the flange ring is simply connected by using a connecting plate and screws. Because the split flange ring is not uniformly stressed, the joint is easy to fail in the pressure test process, and great potential safety hazard is caused.
The pipe box, the floating head cover and the hook ring cannot be obtained, or when a user only needs to manufacture the pipe bundle, the parts are required to be manufactured by a manufacturer, although the pipe box and the floating head cover can be simplified into the flange cover with a certain inner space, the flange cover is generally designed according to the sealing design of original equipment, the pressure test tool is quite heavy, the forging is required to be manufactured, and the pressure test cost is high.
Therefore, the tube side pressure testing device which is high in safety, can be used for manufacturing enterprises and user overhauling, is relatively simple to manufacture, and is wide in application range and good in economy is necessary.
Disclosure of Invention
The invention aims to provide a detachable tube bundle tube side reliability pressure test device convenient for flexible test, the sealing structure can realize test pressure of tens of megapascals, and the device is simple in structure, safe and reliable, can be used for testing pressure of a floating head type tube bundle and a U-shaped tube type tube bundle tube side, and is particularly very effective for tube head leakage test of square distribution tubes. The high cost of manufacturing the shell side pressure test cylinder body is avoided.
The invention aims at realizing the following technical scheme: the utility model provides a can dismantle tube bank tube side reliability pressure testing device, it is including stiff end portion and floating end portion, heat exchange tube, its characterized in that: the fixed end portion includes: the fixed end flange cover with the flow inlet tube seat is characterized in that a limit cylinder and a fixed end hook ring are sequentially arranged at one end of the fixed end flange cover, a fixed tube plate is further arranged at the inner side of the limit cylinder, a fixed end sealing ring with a fixed end O-ring is arranged between the fixed end flange cover and the fixed tube plate, a split wedge ring is embedded between the fixed tube plate and the fixed end hook ring, a fixed end stud and a fixed end nut are connected between the fixed end flange cover and the fixed end hook ring, a channel communicated with the flow inlet tube seat is further arranged at the inner side of the fixed end flange cover, and the channel is communicated with a gap between the fixed end flange cover and the fixed tube plate; the floating end portion includes: the floating end hook ring is symmetrically arranged with the fixed end part, the floating end hook ring is outwards provided with a floating tube plate, a floating end sealing ring with a floating end O-ring and a floating end flange cover in sequence, the floating end hook ring and the floating tube plate are of an embedded structure, and a floating end stud and a floating end nut are connected between the floating end flange cover and the floating end hook ring; a distance tube is fixedly arranged on the fixed tube plate between the fixed end part and the floating end part, and the other end of the distance tube is limited on the supporting plate through a pull rod and a pull rod nut; the heat exchange tube is arranged between the fixed tube plate and the floating tube plate and is communicated with a gap between the fixed end flange cover and the fixed tube plate.
In order to further improve the sealing effect, the side surfaces of the fixed end sealing ring and the floating end sealing ring are respectively provided with a ring groove, and the fixed end O-shaped ring and the floating end O-shaped ring are respectively arranged in the ring grooves.
The split wedge ring is embedded into the fixed end hook ring to meet the self-locking condition that the lift angle range is 11-17 degrees. And the lift angle of the hook ring of the floating end is determined according to the lift angle of the floating pipe plate structure.
A fluid channel is processed on the flange cover of the fixed end, and a flow inlet tube seat for injecting and exhausting pressure test media and communicating with a pressure gauge is welded on the upper part of the flange cover of the fixed end.
In addition, a self-sealing taper pipe thread is processed on the inlet pipe seat.
When pressure test is performed, the split wedge ring positioned at the fixed end is strictly limited in the limit cylinder, and the hook ring at the fixed end is in self-locking relation with the split wedge ring, so that the pressure test process has high reliability; also, the floating end has high reliability. The fixed end sealing ring and the floating end sealing ring are respectively provided with a ring groove for placing O-shaped rings, the sealing capability is strong, and the sealing device is suitable for high, medium and low pressure test occasions of a tube side.
Specifically, when the fixed end nut is screwed, sealing surfaces of the fixed end flange cover, the fixed end sealing ring, the fixed tube plate and the like are mutually stuck, so that the fixed end O-shaped ring arranged in the fixed end sealing ring is forced to deform, and the tube side of the fixed tube plate is sealed; and when the floating end nut is screwed in the same way, the tube side of the floating tube plate can be sealed.
The beneficial effects of the invention are as follows: because the O-shaped ring is adopted for sealing, the bolt load in the pre-tightening and pressure testing states is smaller, and the thickness of the flange cover is greatly reduced. Compared with the prior art that an integral forging flange cover is adopted, the sealing adopts a sealing form of a winding pad or a tooth-shaped pad used in original equipment, and the economical efficiency is much better; the concave flange cover with the cavity and the sealing shoulder is divided into the pure flange cover and the sealing ring, so that the parts are simple, the precision is high, the plate is directly selected for a little processing, and the manufacturing cost is greatly reduced; the O-shaped ring can be made by using strips, so that the cost of expensive winding and tooth-shaped gaskets is saved; the key point is that the limit sleeve, the split wedge ring and the hook ring combined structure are adopted, namely: the wedge-shaped ring and the hook ring split surfaces form 90 degrees, the wedge-shaped ring and the hook ring have a self-locking relationship, and the safety of the pressure test process is ensured; the O-shaped ring has strong sealing capability, can bear very high pressure, and is suitable for various high, medium and low pressure occasions.
Drawings
FIG. 1 is a schematic diagram of a semi-sectional structure of the present invention
Fig. 2 is an enlarged schematic view of fig. 1.
Description of the main components in the drawings: 1. a fixed end flange cover; 2. a heat exchange tube; 3. a fixed end sealing ring; 4. a fixed O-ring; 5. a fixed end stud; 6. a fixed end nut; 7. a tube seat; 8. a limit cylinder; 9. fixing the tube plate; 10. splitting the wedge ring; 11. a fixed end hook ring; 12. a distance tube; 13. a baffle plate; 14. a support plate; 15. a pull rod nut; 16. a pull rod; 17. a floating end hook ring; 18. a floating tube sheet; 19. a floating end stud; 20. a floating end flange cover; 21. a floating end nut; 22. a floating O-ring; 23. a floating end seal ring.
The invention will now be described in further detail by way of example with reference to the accompanying drawings, which are only examples of the invention and are not intended to limit the scope of the invention as defined in the claims.
Detailed Description
1-2, the invention comprises a fixed end part and a floating end part, and a heat exchange tube 2 to be tested; the fixed end portion includes: a fixed end flange cover 1 with a flow inlet tube seat 7, wherein one end of the fixed end flange cover 1 is sequentially provided with a limit cylinder 8 and a fixed end hook ring 11, the inner side of the limit cylinder 8 is also provided with a fixed tube plate 9, a fixed end sealing ring 3 with a fixed end O-shaped ring 4 is arranged between the fixed end flange cover 1 and the fixed tube plate 9, a split wedge ring 10 is embedded between the fixed tube plate 9 and the fixed end hook ring 11, a wedge part is embedded in the fixed end hook ring 11, a fixed end stud 5 and a fixed end nut 6 are connected between the fixed end flange cover 1 and the fixed end hook ring 11, and a channel communicated with the flow inlet tube seat 7 is also arranged on the inner side of the fixed end flange cover 1 and is communicated with a gap between the fixed end flange cover 1 and the fixed tube plate 9; the floating end portion includes: the floating end hook ring 17 is symmetrically arranged with the fixed end part, the floating end hook ring 17 is outwards provided with a floating tube plate 18, a floating end sealing ring 23 with a floating end O-ring 22 and a floating end flange cover 20 in sequence, the floating end hook ring 17 and the floating tube plate 18 are of an embedded structure, and a floating end stud 19 and a floating end nut 21 are connected between the floating end flange cover 20 and the floating end hook ring 17; a distance tube 12 is fixedly arranged on the fixed tube plate 9 between the fixed end part and the floating end part, and the other end of the distance tube 12 is limited on a supporting plate 14 through a pull rod 16 and a pull rod nut 15; the heat exchange tube 2 to be tested is arranged between the fixed tube plate 9 and the floating tube plate 18 and is communicated with a gap between the fixed end flange cover 1 and the fixed tube plate 9. In addition, 13 in the figure is a baffle plate.
Firstly, processing parts meeting the requirements, wherein the specific size requirements are as follows: the outer diameter sizes of the fixed end sealing ring 3 and the split wedge ring 10 are consistent with the outer diameter of the fixed tube plate 9, the limiting cylinder 8 is in clearance fit with the parts, the maximum clearance is 0.4 mm, and the minimum clearance is 0.2 mm. The outer diameter of the split wedge ring 10 is consistent with the inner diameter of the fixed end hook ring 11, and the split wedge ring 10 is limited by the limiting cylinder 8, the fixed tube plate 9 and the fixed end hook ring 11; the length of the limit cylinder 8 is required to ensure that at least half of the split wedge ring 10 is contained in the cylinder, and a gap of not less than 2 mm is reserved between the limit cylinder 8 and the fixed end hook ring 11 after the limit cylinder is installed. The split wedge ring 10 and the fixed end hook ring 11 meet the self-locking condition, and the lift angle range is 11-17 degrees (90-alpha); the outer diameter of the floating end sealing ring 23 is consistent with the outer diameter of the floating tube plate 18, and the floating end hook 17 is designed according to the structural type of the floating tube plate 18; the ring grooves on the fixed end sealing ring 3 and the floating end sealing ring 23 are determined according to the specifications of the fixed O-ring 4 and the floating O-ring 22.
When the end part of the fixed tube plate 9 of the pressure testing device is installed, the fixed end sealing ring 3 embedded with the fixed end O-ring 4, the limit cylinder 8, the split wedge ring 10, the fixed end flange cover 1 processed with the fluid channel and welded with the tube seat 7 and the fixed end hook ring 11 are sequentially installed, the split wedge ring 10 and the split surface of the fixed end hook ring 11 are made to form 90 degrees, and then the fixed end stud 5 and the fixed end nut 6 are installed. When the fixed end nut 6 is screwed, sealing surfaces of the fixed end flange cover 1, the fixed end sealing ring 3, the fixed tube plate 9 and the like are tightly adhered to each other, so that the fixed end O-shaped ring 4 arranged in the fixed end sealing ring 3 is forced to deform, and the tube side of the fixed tube plate 9 is sealed.
When the end of the floating tube plate 18 of the pressure testing device is installed, the floating end sealing ring 23 embedded with the floating end O-ring 22, the floating end flange cover 20, the floating end hook ring 17, the floating end stud 19 and the floating end nut 21 are sequentially arranged, and when the floating end nut 21 is screwed, the tube side of the floating tube plate 18 can be sealed.
At this time, all the installation procedures of the detachable tube bundle tube side high-reliability pressure testing device are finished, and water injection pressure testing can be performed.
The tool structure is also suitable for tube bundle tube side pressure test of the U-shaped tube type heat exchanger except for tube bundle tube side pressure test of the floating head type heat exchanger, and at the moment, the floating end part is omitted.
Claims (4)
1. The utility model provides a can dismantle tube bank tube side reliability pressure testing device, it is including stiff end portion and floating end portion, baffling board, heat exchange tube, its characterized in that: the fixed end portion includes: the fixed end flange cover with the flow inlet tube seat is characterized in that a limit cylinder and a fixed end hook ring are sequentially arranged at one end of the fixed end flange cover, a fixed tube plate is further arranged at the inner side of the limit cylinder, a fixed end sealing ring with a fixed end O-ring is arranged between the fixed end flange cover and the fixed tube plate, a split wedge ring is embedded between the fixed tube plate and the fixed end hook ring, a fixed end stud and a fixed end nut are connected between the fixed end flange cover and the fixed end hook ring, a channel communicated with the flow inlet tube seat is further arranged at the inner side of the fixed end flange cover, and the channel is communicated with a gap between the fixed end flange cover and the fixed tube plate; the floating end portion includes: the floating end hook ring is symmetrically arranged with the fixed end part, the floating end hook ring is outwards provided with a floating tube plate, a floating end sealing ring with a floating end O-ring and a floating end flange cover in sequence, the floating end hook ring and the floating tube plate are of an embedded structure, and a floating end stud and a floating end nut are connected between the floating end flange cover and the floating end hook ring; a distance tube is fixedly arranged on the fixed tube plate between the fixed end part and the floating end part, and the other end of the distance tube is limited on the supporting plate through a pull rod and a pull rod nut; the heat exchange tube is arranged between the fixed tube plate and the floating tube plate and is communicated with a gap between the fixed end flange cover and the fixed tube plate; the split wedge ring is embedded into the fixed end hook ring to meet the self-locking condition that the lift angle range is 11-17 degrees.
2. The removable tube bundle tube side reliability pressure test device of claim 1, wherein: the side surfaces of the fixed end sealing ring and the floating end sealing ring are respectively provided with a ring groove, and the fixed end O-shaped ring and the floating end O-shaped ring are respectively arranged in the ring grooves.
3. The removable tube bundle tube side reliability pressure test device of claim 1, wherein: a fluid channel is processed on the flange cover of the fixed end, and a flow inlet tube seat for injecting and exhausting pressure test media and communicating with a pressure gauge is welded on the upper part of the flange cover of the fixed end.
4. The removable tube bundle tube side reliability test device according to claim 1, wherein self-sealing taper tube threads are formed on the inlet tube seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710491612.9A CN107084887B (en) | 2017-06-20 | 2017-06-20 | Detachable tube bundle tube side reliability pressure testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710491612.9A CN107084887B (en) | 2017-06-20 | 2017-06-20 | Detachable tube bundle tube side reliability pressure testing device |
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| CN107084887A CN107084887A (en) | 2017-08-22 |
| CN107084887B true CN107084887B (en) | 2023-07-28 |
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| CN201710491612.9A Active CN107084887B (en) | 2017-06-20 | 2017-06-20 | Detachable tube bundle tube side reliability pressure testing device |
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0267350A1 (en) * | 1986-11-13 | 1988-05-18 | Hamon-Sobelco S.A. | Assembly by flanges of tube plates in heat exchangers comprising solid titanium tube plates |
| CN2384194Y (en) * | 1999-09-01 | 2000-06-21 | 南海市桂城宝峰胜高新科技开发有限公司 | Double float tube sheet heat exchanger |
| CN2446487Y (en) * | 2000-09-14 | 2001-09-05 | 李铁 | Floating end structure of floating heat exchanger |
| CN201503332U (en) * | 2009-07-29 | 2010-06-09 | 洛阳双瑞特种装备有限公司 | Packing box for hydraulic test on floating tube sheet end of floating head type heat exchanger |
| CN102359850A (en) * | 2011-09-26 | 2012-02-22 | 张家港化工机械股份有限公司 | Assembly for pressure test of floating head type heat exchanger |
| CN103673692A (en) * | 2013-12-10 | 2014-03-26 | 山东蓝星清洗防腐公司 | Novel raw oil top circulation oil heat exchanger |
| CN203657978U (en) * | 2013-12-31 | 2014-06-18 | 陕西理工学院 | Novel floating head heat exchanger pressure test tool |
| CN103996420A (en) * | 2014-04-16 | 2014-08-20 | 中国核电工程有限公司 | Fuel assembly grab using wedge to realize self-locking |
| CN204314019U (en) * | 2015-01-06 | 2015-05-06 | 辽宁华源风力发电设备制造有限公司 | Hook circle movable tube sheets heat exchanger shell side structure for pressure test |
| CN204663459U (en) * | 2015-04-13 | 2015-09-23 | 河北博路天宝石油设备制造有限公司 | A kind of hydraulic pressure self-locking mechanism of preventer |
| CN204757793U (en) * | 2015-06-18 | 2015-11-11 | 中石化洛阳工程有限公司 | A sealing device for float head heat -exchanger |
| CN105699201A (en) * | 2016-04-14 | 2016-06-22 | 沈阳汇博热能设备有限公司 | High-pressure floating-head heat exchanger shell side pressure test device |
| CN205352169U (en) * | 2015-12-11 | 2016-06-29 | 四川天华富邦化工有限责任公司 | A floating end cover for heat exchanger |
| CN206177122U (en) * | 2016-09-30 | 2017-05-17 | 甘肃蓝科石化高新装备股份有限公司 | Single tube journey floating head heat exchanger screw locking intussuseption material letter seal structure |
| CN206876499U (en) * | 2017-06-20 | 2018-01-12 | 沈阳汇博热能设备有限公司 | Demountable tube beam tube journey reliability pressure testing device |
-
2017
- 2017-06-20 CN CN201710491612.9A patent/CN107084887B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0267350A1 (en) * | 1986-11-13 | 1988-05-18 | Hamon-Sobelco S.A. | Assembly by flanges of tube plates in heat exchangers comprising solid titanium tube plates |
| CN2384194Y (en) * | 1999-09-01 | 2000-06-21 | 南海市桂城宝峰胜高新科技开发有限公司 | Double float tube sheet heat exchanger |
| CN2446487Y (en) * | 2000-09-14 | 2001-09-05 | 李铁 | Floating end structure of floating heat exchanger |
| CN201503332U (en) * | 2009-07-29 | 2010-06-09 | 洛阳双瑞特种装备有限公司 | Packing box for hydraulic test on floating tube sheet end of floating head type heat exchanger |
| CN102359850A (en) * | 2011-09-26 | 2012-02-22 | 张家港化工机械股份有限公司 | Assembly for pressure test of floating head type heat exchanger |
| CN103673692A (en) * | 2013-12-10 | 2014-03-26 | 山东蓝星清洗防腐公司 | Novel raw oil top circulation oil heat exchanger |
| CN203657978U (en) * | 2013-12-31 | 2014-06-18 | 陕西理工学院 | Novel floating head heat exchanger pressure test tool |
| CN103996420A (en) * | 2014-04-16 | 2014-08-20 | 中国核电工程有限公司 | Fuel assembly grab using wedge to realize self-locking |
| CN204314019U (en) * | 2015-01-06 | 2015-05-06 | 辽宁华源风力发电设备制造有限公司 | Hook circle movable tube sheets heat exchanger shell side structure for pressure test |
| CN204663459U (en) * | 2015-04-13 | 2015-09-23 | 河北博路天宝石油设备制造有限公司 | A kind of hydraulic pressure self-locking mechanism of preventer |
| CN204757793U (en) * | 2015-06-18 | 2015-11-11 | 中石化洛阳工程有限公司 | A sealing device for float head heat -exchanger |
| CN205352169U (en) * | 2015-12-11 | 2016-06-29 | 四川天华富邦化工有限责任公司 | A floating end cover for heat exchanger |
| CN105699201A (en) * | 2016-04-14 | 2016-06-22 | 沈阳汇博热能设备有限公司 | High-pressure floating-head heat exchanger shell side pressure test device |
| CN206177122U (en) * | 2016-09-30 | 2017-05-17 | 甘肃蓝科石化高新装备股份有限公司 | Single tube journey floating head heat exchanger screw locking intussuseption material letter seal structure |
| CN206876499U (en) * | 2017-06-20 | 2018-01-12 | 沈阳汇博热能设备有限公司 | Demountable tube beam tube journey reliability pressure testing device |
Non-Patent Citations (2)
| Title |
|---|
| 战洪峰 等.内置膨胀节单管程浮头式换热器拆装技术.《石油工程建设》.2015,(第02期),第60-64页. * |
| 李永泰 等.波纹管换热器管束整体失稳分析及设计计算要考虑的问题.《压力容器》.2013,第30卷(第06期),第12-15页. * |
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