CN114294991B - Adjustable buffer type impact-resistant mechanism and coiled tube type heat exchanger - Google Patents
Adjustable buffer type impact-resistant mechanism and coiled tube type heat exchanger Download PDFInfo
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- CN114294991B CN114294991B CN202111450186.7A CN202111450186A CN114294991B CN 114294991 B CN114294991 B CN 114294991B CN 202111450186 A CN202111450186 A CN 202111450186A CN 114294991 B CN114294991 B CN 114294991B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 21
- 238000011010 flushing procedure Methods 0.000 claims abstract description 10
- 230000003139 buffering effect Effects 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 230000003628 erosive effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 5
- 238000013016 damping Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Abstract
The application discloses an adjustable buffer type anti-collision mechanism and a coiled tube heat exchanger, wherein the adjustable buffer type anti-collision mechanism comprises: the anti-flushing rods are arranged in the shell pass and positioned between the shell pass inlet and the heat exchange tube, and are arranged in an upper row and a lower row, and are distributed at equal intervals between the two rows of anti-flushing rods and between the anti-flushing rods in the same row; the anti-collision rod comprises a rod core and a rod sleeve, wherein buffering components which are axially distributed at equal intervals are arranged between the rod core and the rod sleeve, and the outer diameter of the rod core is smaller than the inner diameter of the rod sleeve. According to the adjustable buffer type anti-impact mechanism and the coiled tube type heat exchanger, the anti-impact rod is provided with the buffer performance and the erosion positions are continuously switched, so that the anti-impact rod has stronger impact stress resistance, longer service life and difficult damage, the heat exchange tube is prevented from being broken by the anti-impact rod, and the heat exchange tube of the heat exchanger is better protected.
Description
Technical Field
The application relates to the technical field of coiled tube heat exchangers, in particular to an adjustable buffer type impact-resistant mechanism and a coiled tube heat exchanger.
Background
The anti-impact rod is used as a heat exchange tube protection part of the heat exchanger and is widely applied to shell-and-tube heat exchangers, the anti-impact rod of the current heat exchanger is usually directly welded on a shell or a baffle plate and is of a round steel structure, in the operation process of the heat exchanger, impact stress and erosion influence of a medium on the anti-impact rod can lead to damage of the anti-impact rod, and in the use process of the current shell-and-tube heat exchanger, once the anti-impact rod is damaged, the heat exchange tube is directly crushed, so that serious safety accidents occur, and therefore, improvement is needed.
Disclosure of Invention
The application aims to provide an adjustable buffer type anti-impact mechanism and a coiled tube type heat exchanger, and the anti-impact rod is provided with the buffer performance and continuously switches the erosion positions, so that the anti-impact rod has stronger impact stress resistance, longer service life and less damage, and further the anti-impact rod is prevented from directly exchanging heat exchange tubes, and the heat exchange tubes of the heat exchanger are better protected.
In order to achieve the above purpose, the main technical scheme adopted by the application comprises the following steps:
an adjustable buffer-type impact mechanism, comprising:
the anti-flushing rods are arranged in the shell pass and positioned between the shell pass inlet and the heat exchange tube, and are arranged in an upper row and a lower row, and are distributed at equal intervals between the two rows of anti-flushing rods and between the anti-flushing rods in the same row;
the anti-collision rod comprises a rod core and a rod sleeve, buffering components which are axially distributed at equal intervals are arranged between the rod core and the rod sleeve, the outer diameter of the rod core is smaller than the inner diameter of the rod sleeve, and the anti-collision rod comprises the following components:
the buffer component comprises a sheath, a buffer ring and a ring sleeve, wherein the ring sleeve is rotatably sleeved in an annular groove on the surface of the rod core, the outer ring of the ring sleeve is inserted into the sheath and is in rotary fit with the sheath, and the buffer ring is arranged in the inner cavity of the sheath and is positioned between the sheath and the ring sleeve;
the rod cores are fixed on the shell through hanging rods, the same side ends of the same row of rod cores are jointly fixed on a cross rod, the hanging rods are arranged in a pair corresponding to each cross rod, the bottom ends of the hanging rods are fixed with the end parts of the cross rods, and the top ends of the hanging rods are connected to the shell and parallel to the axis of a shell side inlet;
the top of the suspender corresponding to the upper row penetrates through the shell and extends to the upper side of the shell, and a buffer section positioned above the shell is formed; the buffer section is sleeved with a buffer spring, the shell is provided with a sealing sleeve sleeved on the buffer section, the sealing sleeve is in sliding fit with the buffer section, and the buffer spring is positioned between the top of the sealing sleeve and the top of the buffer section;
the surface of the sealing sleeve is in threaded fit with a top sleeve, and the top sleeve is supported on the bottom surface of the bottom spring seat of the buffer spring; the top of buffer section is equipped with the screw thread section, the bottom of screw thread section is used for right buffer spring's top spring holder is spacing, just the screw thread section runs through the backup pad of fixing on the casing, just the screw thread section pass through adjusting bolt with the backup pad is fixed.
Preferably, the buffer ring is fixed on the outer surface of the ring sleeve.
Preferably, the top ends of the suspenders corresponding to the lower row of the rod cores are welded and fixed with the inner wall of the top of the shell.
Preferably, a reinforcing support ring is sleeved outside the suspender corresponding to the lower row, and the reinforcing support ring is welded with the suspender and fixed in an annular mounting groove on the inner wall of the shell.
The application also provides a coiled tube type heat exchanger, which comprises the adjustable buffer type anti-collision mechanism.
The application has at least the following beneficial effects:
according to the adjustable buffer type anti-collision mechanism, the anti-collision rod is provided with the rotatable rod sleeve and the buffer part is additionally arranged for the rod sleeve, so that the anti-collision rod has stronger shock resistance, and meanwhile, the erosion position of the rod sleeve is continuously changed, so that the anti-collision rod has the advantages of stronger stability, stronger shock resistance and longer service life.
After the adjustable buffer type impact-resistant mechanism is adopted in the coiled tube type heat exchanger, the impact-resistant rod is longer in service life and stronger in impact stress resistance, the heat exchange tube can be prevented from being broken after the impact-resistant rod is damaged, and the heat exchange tube is better protected.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
fig. 1 is a schematic structural view of an adjustable buffer type impact protection mechanism of the present application.
Fig. 2 is a schematic diagram illustrating the disassembly of the impact-resistant rod of the adjustable buffer impact-resistant mechanism of the present application.
Fig. 3 is a schematic view of the adjustable buffer type impact mechanism of the present application on a heat exchanger.
Fig. 4 is a schematic view of a coiled tube heat exchanger of the present application.
Detailed Description
The following detailed description of embodiments of the present application will be given with reference to the accompanying drawings and examples, by which the implementation process of how the present application can be applied to solve the technical problems and achieve the technical effects can be fully understood and implemented.
Referring to fig. 1 to 3, the present application provides an adjustable buffer type impact protection mechanism, comprising:
the anti-impact rod 1 is arranged in the shell side and positioned between the shell side inlet and the heat exchange tube, and the anti-impact rod 1 is provided with an upper row and a lower row, and the two rows of anti-impact rods 1 and the anti-impact rods 1 in the same row are distributed at equal intervals;
the anti-impact rod 1 comprises a rod core 1-1 and a rod sleeve 1-2, buffer components 1-3 which are axially and equally distributed at intervals are arranged between the rod core 1-1 and the rod sleeve 1-2, the outer diameter of the rod core 1-1 is smaller than the inner diameter of the rod sleeve 1-2, through the arrangement mode, the distance between the rod core 1-1 and the rod sleeve 1-2 is used as the buffer stroke of the rod sleeve 1-2, and the anti-impact rod comprises the following components:
the buffer component 1-3 comprises a sheath 1-3a, a buffer ring 1-3b and a ring sleeve 1-3c, wherein the ring sleeve 1-3c is rotatably sleeved in an annular groove 1-1a on the surface of the rod core 1-1, the outer ring of the ring sleeve 1-3c is inserted into the sheath 1-3a and is in rotary fit with the sheath 1-3a, the buffer ring 1-3b is arranged in the inner cavity of the sheath 1-3a and is positioned between the sheath 1-3a and the ring sleeve 1-3c, the buffer ring 1-3b is of an annular buffer structure and can be made of annular rubber or other materials which have a buffer function and strong stability and can be applied to a heat exchanger and are not easy to corrode by media.
By adopting the technical scheme, the anti-impact rod 1 is arranged into the rod core 1-1 and the rod sleeve 1-2 which can rotate relatively, the buffer part 1-3 is arranged between the rod core 1-1 and the rod sleeve 1-2, the ring sleeve 1-3c in the buffer part 1-3 is arranged to be in running fit with the rod core 1-1, when the anti-impact rod 1 is subjected to the medium pressure entering from the shell side inlet, the buffer ring 1-3b is pressed and deformed to enable the rod sleeve 1-2 to have the pressed buffer function, so that the buffer function is provided for the anti-impact rod 1, the anti-impact rod 1 has stronger stress resistance, the service life of the anti-impact rod 1 is prolonged, meanwhile, the anti-impact rod 1 is fixed on the shell, after the method is adopted, the stress transmission to the shell can be reduced, and the stress received at the connecting part between the anti-impact rod 1 and the shell is reduced, further, the rod sleeve 1-2 can rotate on the rod core 1-1 by utilizing the annular sleeve 1-3c, so that the rod sleeve 1-2 can rotate under the condition of unbalanced pressure after being subjected to medium pressure, and the buffer ring 1-3b can continuously change the pressure surface by utilizing the rotation, on one hand, the self-recovery capacity and the service life of the buffer ring 1-3b are improved, meanwhile, the erosion position of the surface of the rod sleeve 1-2 can be continuously changed, the service life of the anti-impact rod 1 is further improved, and the anti-impact rod 1 has a force unloading effect when the impact stress of the anti-impact rod 1 is uneven by utilizing the rotation of the rod sleeve 1-2, so that the service life and the stability of the anti-impact rod 1 are further improved.
Further, the driving grooves 1-2a are uniformly formed in the rod sleeve 1-2, the driving grooves 1-2a are in a step shape and are arranged on the surface of the rod sleeve 1-2 along the tangential direction, a plurality of driving grooves 1-2a are uniformly distributed on the same circumferential surface to form a circle, a plurality of circles of driving grooves 1-2a are uniformly distributed on the surface of the rod sleeve 1-2 along the axial direction at intervals, meanwhile, the driving grooves 1-2a are arranged in such a way that when the driving grooves are positioned on one side surface of the rod sleeve 1-2 close to the shell side inlet, the groove bottoms are positioned below, the groove depths are gradually shallower from bottom to top, so that when a medium impacts the rod sleeve 1-2, the medium impacts the groove bottoms to drive the rod sleeve 1-2 to rotate better, and the rod sleeve 1-2 is convenient to continuously and effectively switch the flushing surfaces all the time.
Specifically, the inner ring of the sheath 1-3a is provided with an annular cavity outwards, the buffer ring 1-3b is positioned in the annular cavity, one side, close to the cavity opening, of the inner walls of the two sides of the annular cavity is provided with annular sliding grooves, one side, close to the outer surface, of the two end faces of the sheath 1-3c is provided with annular sliding parts matched with the annular sliding grooves, the annular sliding parts are arranged in the annular sliding grooves in a sliding manner, the radial width of the annular sliding grooves is larger than the radial thickness of the annular sliding parts, the size difference of the annular sliding parts and the annular sliding parts is larger than the size of a gap between the rod sleeve 1-2 and the rod core 1-1, and in the mode, the inner wall faces of the cavity of the sheath 1-3a are in contact with the surface of the buffer ring 1-3 b.
Wherein, the buffer ring 1-3b is fixed on the outer surface of the ring sleeve 1-3c, and in the implementation process, the buffer ring 1-3b can be adhered on the surface of the ring sleeve 1-3c or formed on the surface of the ring sleeve 1-3c in a pouring mode.
The rod cores 1-1 are fixed on the shell through the hanging rods 2, the same side ends of the same row of rod cores 1-1 are jointly fixed on a cross rod 3, all rod cores 1-1 are synchronously fixed by the cross rod 3, all the anti-impact rods 1 can be synchronously supported, the rod cores 1-1 and the cross rod 3 can be fixed in a welding mode, the hanging rods 2 are arranged in a pair corresponding to the cross rods 3, the bottom ends of the hanging rods 2 are fixed with the end parts of the cross rods 3, the top ends of the hanging rods 2 are connected to the shell and parallel to the axis of a shell side inlet, the hanging rods 2 are in a vertical state and are fixedly supported on the anti-impact rods 1 through the top and the shell.
The top end of the boom 2 corresponding to the lower-row boom core 1-1 is welded and fixed with the inner wall of the top of the shell, wherein the boom 2 corresponding to the lower-row boom is sleeved with the reinforcing support ring 4, the reinforcing support ring 4 is welded with the boom 2 and fixed in the annular mounting groove of the inner wall of the shell, in this way, on one hand, the supporting performance of the bumper 1 is further improved by using the reinforcing support ring 4, so that the bumper 1 is more stable, on the other hand, compared with the prior art, the welding point on the boom 2 is increased by using the welding way between the reinforcing support ring 4 and the boom 2, the stability is further improved, and in this way, the reinforcing support ring 4 is fixed in the annular mounting groove in a welding way.
The top of the boom 2 corresponding to the upper row penetrates through the shell and extends to the upper side of the shell, and a buffer section 2-1 positioned above the shell is formed, wherein a buffer spring 5 is sleeved on the buffer section 2-1, the buffer spring 5 deforms when the boom 2 moves along the axial direction to provide damping acting force, a sealing sleeve 6 sleeved on the buffer section 2-1 is arranged on the shell, the sealing sleeve 6 is in sealing fit with the buffer section 2-1 and welded on the shell, the sealing sleeve 6 is in sliding fit with the buffer section 2-1, the buffer spring 5 is positioned between the top of the sealing sleeve 6 and the top of the buffer section 2-1, the buffer spring 5 is used for providing a buffer stroke for the buffer rod 1 positioned on the upper row so as to avoid the instantaneous impact stress of a medium, meanwhile, when the medium pressure becomes large, the buffer spring 5 enables the buffer rod 1 on the upper row to approach the buffer rod 1 arranged downwards in the buffer stroke through elastic deformation, at the moment, the gap between the two rows of buffer rods 1 becomes small, the throughput of the medium in the gap between the buffer rod 1 is reduced, more medium is enabled to pass through the gap between the buffer rod 1 from the upper row 1 and the top of the buffer rod 1 to the buffer rod, the buffer rod 1 is enabled to enter the heat exchange tube from the upper row side to the buffer rod 1, and the performance is improved.
The surface screw thread fit of seal cover 6 has top cover 7, and top cover 7 supports the bottom surface at buffer spring 5's bottom spring holder 5-1, and in this mode, utilize top cover 7 cooperation buffer section 2-1's top to carry out spacingly to buffer spring 5's both ends, simultaneously, utilize top cover 7 to rotate its position in seal cover 6 surface, the compression volume of adjustable buffer spring 5, and then adjust its damping effort's size, at this moment, can adjust buffer spring 5's damping effort according to preset medium pressure for anti-impact rod 1 is applicable to the medium of different impact forces.
The top of the buffer section 2-1 is provided with a thread section 2-1a, the bottom of the thread section 2-1a is used for limiting a top spring seat 5-2 of a buffer spring 5, the thread section 2-1a penetrates through a supporting plate 8 fixed on a shell, the thread section 2-1a is fixed with the supporting plate 8 through an adjusting bolt 9, the height of the upper-row impact preventing rod 1 above the lower-row impact preventing rod 1 can be adjusted through rotating the adjusting bolt 9, namely the distance between the upper-row impact preventing rod 1 and the lower-row impact preventing rod 1 is adjusted, meanwhile, the buffer spring 5 has the same damping acting force aiming at the upper-row impact preventing rods 1 with different heights by matching with the top sleeve 7, and when the buffer stroke of the upper-row impact preventing rod 1 is large, the distance between the upper-row impact preventing rod 1 can be increased by utilizing the mode.
Referring to fig. 4, the present application further provides a coiled tube heat exchanger, and the adjustable buffer type anti-impact mechanism is applied.
Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art can solve the technical problem within a certain error range, substantially achieving the technical effect.
It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude that an additional identical element is present in a commodity or system comprising the element.
While the foregoing description illustrates and describes the preferred embodiments of the present application, it is to be understood that the application is not limited to the forms disclosed herein but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as described herein, either as a result of the foregoing teachings or as a result of the knowledge or skills in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the application are intended to be within the scope of the appended claims.
Claims (5)
1. An adjustable buffer type impact protection mechanism, which is characterized by comprising:
the anti-flushing rods are arranged in the shell pass and positioned between the shell pass inlet and the heat exchange tube, and are arranged in an upper row and a lower row, and are distributed at equal intervals between the two rows of anti-flushing rods and between the anti-flushing rods in the same row;
the anti-collision rod comprises a rod core and a rod sleeve, buffering components which are axially distributed at equal intervals are arranged between the rod core and the rod sleeve, the outer diameter of the rod core is smaller than the inner diameter of the rod sleeve, and the anti-collision rod comprises the following components:
the buffer component comprises a sheath, a buffer ring and a ring sleeve, wherein the ring sleeve is rotatably sleeved in an annular groove on the surface of the rod core, the outer ring of the ring sleeve is inserted into the sheath and is in rotary fit with the sheath, and the buffer ring is arranged in the inner cavity of the sheath and is positioned between the sheath and the ring sleeve;
the rod cores are fixed on the shell through hanging rods, the same side ends of the same row of rod cores are jointly fixed on a cross rod, the hanging rods are arranged in a pair corresponding to each cross rod, the bottom ends of the hanging rods are fixed with the end parts of the cross rods, and the top ends of the hanging rods are connected to the shell and parallel to the axis of a shell side inlet;
the top of the suspender corresponding to the upper row penetrates through the shell and extends to the upper side of the shell, and a buffer section positioned above the shell is formed; the buffer section is sleeved with a buffer spring, the shell is provided with a sealing sleeve sleeved on the buffer section, the sealing sleeve is in sliding fit with the buffer section, and the buffer spring is positioned between the top of the sealing sleeve and the top of the buffer section;
the surface of the sealing sleeve is in threaded fit with a top sleeve, and the top sleeve is supported on the bottom surface of the bottom spring seat of the buffer spring; the top of buffer section is equipped with the screw thread section, the bottom of screw thread section is used for right buffer spring's top spring holder is spacing, just the screw thread section runs through the backup pad of fixing on the casing, just the screw thread section pass through adjusting bolt with the backup pad is fixed.
2. The adjustable buffer type impact mechanism of claim 1, wherein the buffer ring is fixed on the outer surface of the ring sleeve.
3. An adjustable buffer type impact mechanism according to claim 1, wherein the top end of the boom corresponding to the lower row of the boom cores is welded and fixed with the inner wall of the top of the shell.
4. An adjustable buffer type impact mechanism according to claim 3, wherein a reinforcing support ring is sleeved outside the boom corresponding to the lower row, and the reinforcing support ring is welded with the boom and fixed in an annular mounting groove on the inner wall of the housing.
5. A coiled tube heat exchanger comprising an adjustable buffer type impact mechanism according to any of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111450186.7A CN114294991B (en) | 2021-12-01 | 2021-12-01 | Adjustable buffer type impact-resistant mechanism and coiled tube type heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111450186.7A CN114294991B (en) | 2021-12-01 | 2021-12-01 | Adjustable buffer type impact-resistant mechanism and coiled tube type heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114294991A CN114294991A (en) | 2022-04-08 |
| CN114294991B true CN114294991B (en) | 2023-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111450186.7A Active CN114294991B (en) | 2021-12-01 | 2021-12-01 | Adjustable buffer type impact-resistant mechanism and coiled tube type heat exchanger |
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| He, Zhao Hong.Study on flow resistance and heat transfer in rectangle tube bundle heat exchanger.2010,全文. * |
| 高压加热器泄漏原因分析、处理及防治;魏勇;;中国新技术新产品(04);687 * |
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