CN110961853B - Tube bundle assembly auxiliary turnover device and turnover method using same - Google Patents
Tube bundle assembly auxiliary turnover device and turnover method using same Download PDFInfo
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- CN110961853B CN110961853B CN201911387405.4A CN201911387405A CN110961853B CN 110961853 B CN110961853 B CN 110961853B CN 201911387405 A CN201911387405 A CN 201911387405A CN 110961853 B CN110961853 B CN 110961853B
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- plate
- assembly
- fixing
- bundle assembly
- tube bundle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a tube bundle assembly auxiliary turnover device which mainly comprises a main frame and a baffle plate supporting assembly. The auxiliary turnover device for the tube bundle assembly provided by the invention has the advantages of simple structure, good safety, convenience in assembly and disassembly and high flexibility, and can stably complete the turnover operation of the tube bundle assembly before the welding process of the tube plate and the tube bundle, thereby achieving the purpose of erecting the tube bundle assembly.
Description
Technical Field
The invention relates to an auxiliary turning-over device for a tube bundle assembly when the tube bundle assembly and a shell assembly are vertically assembled in the production and manufacturing process of a tube-shell heat exchanger, in particular to the auxiliary turning-over device for the tube bundle assembly when the tube bundle assembly and the shell assembly of the tube-shell heat exchanger in the nuclear power field are assembled.
Background
The shell-and-tube heat exchanger has a wide application range and is mainly used in the industrial fields of nuclear power, chemical machinery and the like. In the production and manufacturing process of the shell-and-tube heat exchanger, especially in the production and manufacturing process of the shell-and-tube heat exchanger in a nuclear power project, the assembly of the tube bundle assembly and the shell assembly is very important process content, and the requirements on the cleanliness of products and the surface quality of parts of the products are very strict.
However, in the process of assembling the tube bundle assembly and the shell assembly, the tube and plate welding process is not performed between the tube plate and the tube bundle, and the tube bundle assembly has the characteristic of flexibility, so that the vertical sleeving process of the tube bundle assembly and the shell assembly is difficult.
Therefore, the auxiliary turning device which can complete the vertical sleeving of the tube bundle assembly and the shell on the premise of meeting the production and manufacturing requirements of nuclear-grade products and not performing the welding process of the tube plate and the tube bundle is required to be researched and designed.
Disclosure of Invention
In order to solve the above problems, the present inventors have conducted intensive studies to design a tube bundle assembly turn-over assisting device, which includes a main frame, a baffle plate supporting assembly, a baffle plate fixing assembly, and a supporting beam. The device fixes the tube bundle assembly by using the main frame, the baffle plate supporting assembly and the baffle plate fixing assembly, enlarges the included angle of the steel wire rope during hoisting by using the supporting beam, realizes the stable turnover operation of the tube bundle assembly, and has good safety, convenient assembly and disassembly and high flexibility, thereby completing the invention.
Specifically, the present invention aims to provide the following:
the invention provides a tube bundle assembly turnover assisting device which comprises a main frame and a baffle plate supporting assembly, wherein the main frame comprises a bottom plate 11 and a long tube 12 arranged on the same side of the bottom plate 11.
In another aspect, the present invention provides a method for turning over a bundle assembly by using the turning-over assisting apparatus of the first aspect of the present invention, the method comprising the steps of:
step 1, sleeving a main frame on a tube bundle assembly;
step 2, connecting the baffle plate supporting assembly and the baffle plate fixing assembly to the main frame;
step 3, connecting the supporting beam, and performing turning operation;
and 4, removing the turnover device.
The invention has the advantages that:
1) the auxiliary turnover device for the tube bundle assembly provided by the invention is simple in structure and low in manufacturing difficulty, can be transformed according to actual products to be used, is not easy to damage, and can be repeatedly used;
2) according to the auxiliary turnover device for the tube bundle assembly, the baffle plate supporting assembly and the baffle plate fixing assembly are detachably connected to the main frame, so that the turnover device is easy to mount and dismount when in use and can be repeatedly used;
3) according to the auxiliary turnover device for the tube bundle assembly, the short tubes and the isolation base plate are arranged, so that the using amount of stainless steel can be reduced, and the manufacturing cost is reduced;
4) the method for turning over the tube bundle assembly by using the tube bundle assembly turning-over assisting device provided by the invention is stable in turning over and high in safety.
Drawings
Fig. 1 shows a perspective view of a main frame;
fig. 2 shows a front view of the main frame;
FIG. 3 shows a side view of the mainframe of FIG. 2;
FIG. 4 shows a schematic view showing the construction of the base plate;
FIG. 5 shows a perspective view of the trunnion assembly;
FIG. 6 shows a schematic structural view of the trunnion assembly;
FIG. 7 is a perspective view of the tube bundle assembly turnover assisting apparatus;
FIG. 8 shows a schematic structural view of a baffle support assembly;
FIG. 9 shows a schematic structural view of a baffle support assembly;
FIG. 10 shows a top view of the baffle support assembly;
fig. 11 shows a front view of the connection assembly;
FIG. 12 shows a top view of the connection assembly;
fig. 13 shows a side view of the connection assembly;
FIG. 14 shows a partial enlarged view at A in FIG. 22;
FIG. 15 is a perspective view of a baffle fixing assembly;
FIG. 16 is a perspective view of a baffle fixing assembly;
FIG. 17 is a schematic view of a baffle fixing assembly;
FIG. 18 shows a front view of the support beam;
FIG. 19 shows a top view of the support beam;
FIG. 20 is a partial enlarged view of FIG. 19 at B
FIG. 21 shows a turn-over schematic view of a bundle assembly;
FIG. 22 shows an assembly view of the bundle assembly with the turnover device.
The reference numbers illustrate:
11-a base plate;
12-long tube;
13-inclined tube;
14-a connecting ring;
15-short pipe;
16-a baffle ring;
17-a hanging shaft;
18-hanging shaft fixing plate;
21-a support plate;
211-a vertical plate;
212-a transverse plate;
2121-left panel;
2122-plate;
2123-right plate;
22-supporting plate fixing seat;
23-an isolation backing plate;
31-connecting plate fixing seat;
32-a connecting plate;
41-a fixed head;
411-a holding notch;
42-a top rod;
421-a regulating hole;
43-ejector pin fixing plate;
44-a bend pipe;
45-a connector;
51-a support bar;
52-a lifting lug;
53-fixing bolts;
54-a fixing nut;
6-a tube plate;
7-heat exchange tube bundle;
8-baffle plate.
Detailed Description
The invention is explained in more detail below with reference to the figures and examples. The features and advantages of the present invention will become more apparent from the description.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
In the present invention, the tube sheet assembly comprises a tube sheet 6, a heat exchange tube bundle 7 and a baffle plate 8. In the production process of the waste heat discharge heat exchanger of the ACP1000 nuclear power project, a tube plate, a heat exchange tube bundle and a baffle plate need to be assembled well before welding the heat exchange tube and the tube plate. Before welding, the bundle assembly needs to be turned over, and the horizontally placed bundle assembly is changed into a vertical placement.
According to the past experience, in the operation of turning over the tube bundle assembly, the turning over operation is mostly carried out by adopting a mode of installing and welding lifting lugs or binding ropes. However, in the nuclear power field, the quality requirement of the heat exchange tube is very strict, and the tube bundle assembly is damaged to different degrees by the two turning modes.
When the operation of standing up is welded the lug to the dress on the baffling board, because do not weld the process between tube sheet and the heat exchange tube, the in-process heat exchange tube of standing up drops from the tube sheet easily, splashes and the smoke and dust that the process production of demolising at the lug moreover falls into the tube bank subassembly easily, not only can increase clear work load, leaves the potential safety hazard in addition easily. When the turnover operation is carried out by adopting the rope binding mode, the tube bundle assembly has the characteristic of flexibility due to large self gravity, and the risk of cutting the heat exchange tube exists when the tube bundle assembly is in contact with the rope.
In order to realize the turnover operation of the tube bundle assembly on the premise of not damaging the tube bundle assembly, the invention provides a tube bundle assembly turnover assisting device on the one hand, which comprises a main frame, a baffle plate supporting assembly, a baffle plate fixing assembly and a supporting beam, as shown in fig. 7.
The main frame, the baffle plate supporting component and the baffle plate fixing component are used for fixing the tube bundle component, so that the relative movement between the heat exchange tube and the tube plate in the turnover process is avoided. The supporting beam is used for enlarging the included angle of the steel wire rope during lifting, and the steel wire rope is prevented from contacting the pipe bundle assembly to cause damage to the pipe bundle assembly.
In a preferred embodiment, the main frame comprises a bottom plate 11 and a long tube 12, wherein the long tube 12 comprises a plurality of long tubes, the long tubes are arranged in parallel with each other, preferably 4 to 8 long tubes, and are arranged on the upper surface of the bottom plate 11, and a rectangular parallelepiped frame is formed on the bottom plate 11. Preferably, the long tube 12 is a long square tube.
Further preferably, the long tubes 12 comprise 4 long tubes, and in the rectangular frame, the side surfaces surrounded by the 4 long tubes are sequentially marked as a first side surface, a second side surface, a third side surface and a fourth side surface of the rectangular frame. Wherein the first side and the third side are opposite and the second side and the fourth side are opposite. More preferably, the first side and the third side have a larger area than the second side and the fourth side, as shown in fig. 1-3.
According to the present invention, when four long tubes parallel to each other constitute a rectangular parallelepiped frame, it can be considered that one set is composed of one long tube each above and below, and the above-mentioned second side surface and fourth side surface are side surfaces formed by the upper and lower long tubes of each set, out of two sets of long tubes constituting the rectangular parallelepiped frame. That is when placing the cuboid frame level, two relative upper and lower sides of cuboid frame in the horizontal direction are the first side and the third side of cuboid frame respectively, and two relative front and back sides of cuboid frame in the vertical direction are the second side and the fourth side of cuboid frame respectively. Preferably, the area of the side surface of the rectangular parallelepiped frame in the horizontal direction is larger than the area of the side surface of the rectangular parallelepiped frame in the vertical direction.
In a preferred embodiment, in the two sets of long tubes 12 forming the rectangular parallelepiped frame, a plurality of inclined tubes 13, preferably 2 to 5, more preferably 3, are arranged between the upper and lower long tubes 12 of each set (i.e. on the long tubes 12 in the second and fourth sides of the rectangular parallelepiped frame), and further preferably, the inclined tubes 13 are inclined square tubes.
Preferably, the angle a between the tube 13 and the long tube 12 is 20-90 °, further preferably 30-60 °, for example 45 °.
The inclined tube is arranged between the long tubes on the second side face and the fourth side face, and the main frame can be used for enhancing the stability. Preferably, the angle between the inclined tube 13 and the long tube 12 is 90 ° at both ends of the second side and the fourth side.
Preferably, the inclination directions between adjacent inclined tubes 13 are opposite on the same side. Compared with the arrangement mode with the same inclination direction, the stability between the two long pipes connected with the inclined pipe is higher when the inclined pipe is arranged in the reverse direction.
Preferably, the connection mode between the inclined tube 13 and the long tube 12 is welding.
In a preferred embodiment, a plurality of connecting rings 14 are arranged on the long tube 12 in the first side of the rectangular parallelepiped frame, and the connecting rings 14 are welded to the long tube 12.
The inclined tube can connect the two long tubes on the second side surface and the fourth side surface into a whole respectively, but the long tubes between the two side surfaces are not connected. The purpose of the coupling rings is to couple the elongated tubes between the second and fourth sides together, i.e. to connect all the elongated tubes in the main frame as a whole.
In the present invention, the shape of the connection ring is not particularly limited, and in order to avoid the mutual contact between the connection ring and the bundle assembly and damage to the bundle assembly, the connection ring 14 is preferably arc-shaped.
In a preferred embodiment, a short pipe 15 is disposed on the lower surface of the bottom plate 11, and further preferably, the short pipe 15 is a short square pipe for enhancing the rigidity of the bottom plate 11. The connection mode between the short pipe 15 and the bottom plate 11 is welding, as shown in fig. 4.
In the process of turning over the tube bundle assembly, the bottom plate provides a bearing force for the tube bundle assembly, and the heat exchange tubes can be prevented from sliding off the tube plates. Because of the weight of the bundle assembly itself, the base plate should be sufficiently rigid to perform its supporting function.
In the present invention, the bottom plate is in direct contact with the tube plate, and the bottom plate is preferably stainless steel in order to meet the cleanliness requirement of the tube plate. Because the price of the stainless steel is higher, the short pipe is welded on the lower surface of the bottom plate, and the rigidity of the bottom plate can be ensured on the premise of reducing the using amount of the stainless steel.
In a preferred embodiment, the main frame further comprises a hanger shaft assembly attached to the elongated tubes 12 on both sides of the rectangular parallelepiped frame with the down tubes 12, i.e., the hanger shaft assembly is attached to the elongated tubes 12 in the second and fourth sides of the rectangular parallelepiped frame, as shown in FIGS. 1-2.
In the invention, the hanging shaft assembly provides a hanging point for the auxiliary turnover device, and the hanging of the main frame and the turnover operation of the tube bundle assembly are convenient. The stop ring can play a limiting role, so that a steel wire rope on the crane can be prevented from falling off, and the safety in the turning-over process is improved.
Preferably, the hanging shaft assembly comprises a baffle ring 16, a hanging shaft 17 and a hanging shaft fixing plate 18, wherein one end of the hanging shaft 17 is connected to the hanging shaft fixing plate 18, and the other end is provided with the baffle ring 16, as shown in fig. 5-6.
Preferably, the hanging shaft assembly is provided in a plurality of, for example, 4 or 6, and is symmetrically connected to the long tubes 12 in the second and fourth sides of the rectangular parallelepiped frame by the hanging shaft fixing plate 18. The connection between the hanger shaft fixing plate 18 and the long tubes 12 on the second side and the fourth side is welding.
In a preferred embodiment, the baffle support assembly preferably includes a support plate 21, the support plate 21 being disposed on the elongated tube 12 in the third side of the rectangular parallelepiped frame, as shown in FIG. 7.
In the invention, in order to avoid the damage of the heat exchange tube during the turning operation of the tube bundle assembly, the turning device or the lifting device is ensured not to be in direct contact with the heat exchange tube.
Preferably, the supporting plate 21 includes two vertical plates 211 and a horizontal plate 212, wherein the two vertical plates 211 are vertically disposed at two ends of the horizontal plate 212, as shown in fig. 8.
It is further preferred that the cross plate 212 comprises a left plate 2121, a flat plate 2122 and a right plate 2123, wherein the left plate 2121 and the right plate 1123 are symmetrically disposed on both sides of the flat plate 3122, and form an included angle with the flat plate 2122, as shown in fig. 9. Wherein, the atress of backup pad can be optimized in the setting of left side board and right board, alleviates the weight of backup pad self.
In the present invention, the support plate 21 may be engaged with the long tube 12 in the third side surface of the rectangular parallelepiped frame, and the vertical plate 211 may be welded to the long tube 12. However, since the turnover device needs to be removed after the bundle assembly is turned over, in order to simplify the operation and prevent the support plate from contaminating the bundle assembly during the removal process, it is preferable that the baffle assembly further includes a support plate holder 22, and the support plate 21 is detachably attached to the long tubes 12 in the third side of the rectangular parallelepiped frame by means of the support plate holder 22 and the connecting member.
Preferably, the supporting plate fixing seat 22 is disposed on the upper surface of the vertical plate 211, and a plurality of light holes are opened on the supporting plate fixing seat 22, as shown in fig. 10.
The connecting assembly comprises a connecting plate fixing seat 31 and a connecting plate 32, the connecting plate fixing seat 31 is fixedly connected to the long pipe 12 in the third side face of the cuboid frame, the connecting plate 32 is fixedly connected to the lower surface of the connecting plate fixing seat 31, and a plurality of unthreaded holes are formed in the connecting plate 32.
The supporting plate holders 22 and the connecting plates 32 are connected by bolts and nuts as shown in fig. 14.
Wherein, the bolt can run through the unthreaded hole on backup pad fixing base and the connecting plate, then utilizes the nut to connect the baffling board supporting component on the long tube. After the turnover operation of the tube bundle assembly is completed, the disassembly of the baffle plate supporting assembly can be completed only by disassembling the bolt and the nut, and the cleanliness of the tube bundle assembly can be ensured without performing unsoldering.
In the present invention, in order to enhance the connection strength between the connecting member and the long pipe, the connecting plate fixing seat 31 is preferably triangular, and the number thereof may be provided in plural, as shown in fig. 11 to 13.
Preferably, the support plate 21 is made of stainless steel. This is because the support plate is in direct contact with the baffle plate, and the contact surface between the support plate and the baffle plate is preferably made of stainless steel in order to ensure the cleanliness of the product.
In order to reduce the manufacturing cost of the turn-over device, it is further preferable that the support plate 21 is made of other material than stainless steel, and a stainless steel spacer 23 is provided at the center of the support plate 21, as shown in fig. 8 to 10.
In a preferred embodiment, the baffle fixing assemblies are disposed on long tubes 12 in the second and fourth sides of the rectangular parallelepiped frame.
In the invention, the baffle plate fixing assemblies are arranged on the second side surface and the fourth side surface, so that radial constraint force can be provided for the tube bundle assembly, the situation that the tube bundle assembly shakes left and right in the turning process can be avoided, and the tube bundle assembly can be prevented from toppling over in the turning process.
Preferably, one baffle in the bundle assembly is secured by two baffle securing assemblies and one baffle support assembly.
Preferably, the baffle fixing assembly comprises a fixing head 41, a push rod 42 and a push rod fixing plate 43, wherein the fixing head 41 is used for fixing the baffle, the push rod 42 is used for connecting the fixing head 41 and the push rod fixing plate 43, and the push rod fixing plate 43 is used for connecting the baffle fixing assembly to the long tube 12, as shown in fig. 15.
In order to facilitate the installation and the disassembly of the turnover device, the mandril fixing plate 43 is preferably connected with the long tubes 12 on the second side and the fourth side of the rectangular frame in a welding manner, and the mandril 42 is detachably connected with the fixing head 41 and the mandril fixing plate 43. Further preferably, the detachable connection is a threaded connection.
Preferably, a clamping notch 411 is provided at one end of the fixing head 41, and a screw hole is provided at the other end of the fixing head 41.
Wherein, the clamping notch 411 is used for tightly propping against the baffle plate so as to play a role of fixing the baffle plate, and in order to avoid scratching the baffle plate by the edge of the notch, it is further preferable that the edge of the groove bottom of the clamping notch 411 is set to be a chamfer.
More preferably, the baffle fixing assembly further comprises an elbow 44 and a connector 45. Wherein, the bent pipe 44 is a U-shaped bent pipe and is formed by bending a steel pipe. The fixed head 41 is arranged on the end head of the elbow 44; one end of the connector 45 is fixedly connected to the middle of the elbow 44, and the other end is provided with a threaded hole to be connected with the ejector rod 42 through threads, as shown in fig. 16.
The bent pipes can increase the installation number of the fixing heads, provide more fixing positions for the baffle plate, and enhance the fixing effect of the turnover device on the pipe bundle assembly.
Preferably, an unthreaded hole is formed in the ejector rod fixing plate 43, and the ejector rod 42 passes through the unthreaded hole in the ejector rod fixing plate 43 and is fixedly connected with the ejector rod fixing plate 43 through a nut, as shown in fig. 17. Further preferably, in order to avoid loosening of the nut, the nut and the ejector fixing plate may be spot-welded together after the nut is tightened and spot-welded.
Preferably, a thread is provided at both ends of the top bar 42, and further preferably, an adjusting hole 421 is further provided on the top bar 42.
The purpose of setting up the regulation hole is in order to adjust the position of fixed head with the help of appurtenance, with the centre gripping notch block to on the baffling board.
In a preferred embodiment, the support beam includes a support rod 51 and a lifting lug 52, and the lifting lug 52 is symmetrically disposed on the support rod 51.
In the invention, the support rods are used for enlarging the included angle of the steel wire rope during hoisting, and the steel wire rope is prevented from contacting the tube bundle assembly or the tube plate assembly to damage the tube bundle assembly or the tube plate assembly. The lifting lugs are used for lifting and fixing the supporting rod, so that the supporting rod cannot slide off the steel wire rope in the turnover process.
Preferably, notches are formed at both ends of the support rod 51, and the notches are used for placing a wire rope.
In order to prevent the wire rope from slipping out of the notch, it is further preferable that the support beam further includes a fixing bolt 53 and a fixing nut 54, as shown in fig. 19 and 20.
Wherein, the fixing bolt 53 penetrates through the notch and is fixedly connected to the support rod through the fixing nut 53, thereby sealing the steel wire rope in the notch.
In a second aspect, the invention provides a method for turning over a bundle assembly by the bundle assembly turning-over assisting device of the first aspect. In the invention, the assembling sequence of the tube bundle assembly auxiliary turnover device and the tube bundle assembly is not specially limited.
In a preferred embodiment, the method comprises the steps of:
step 1, sleeving a main frame on a tube bundle assembly;
in a preferred embodiment, a steel wire rope on a crane is used for hooking a hanging shaft on a main frame, the main frame is horizontally lifted and moved to the position above a tube bundle assembly, the main frame is sleeved on the tube bundle assembly from top to bottom, and then a pull rib plate is used for welding the bottom plate and the tube plate together.
Step 2, connecting the baffle plate supporting assembly and the baffle plate fixing assembly to the main frame;
in a preferred embodiment, after the tube bundle assembly is sleeved with the main frame, the baffle plate supporting assembly is integrally connected with the main frame through the connecting assembly welded on the main frame by using bolts and nuts, and the isolation cushion plate in the baffle plate supporting assembly is ensured to be in contact with the baffle plate in the tube bundle assembly.
In a preferred embodiment, the ejector rod penetrates through an ejector rod fixing plate welded on the main frame, then a fixing head is installed, and the position of the fixing head is adjusted to ensure that a clamping notch on the fixing head is clamped with the baffle plate. The nut is then tightened so that the retaining head abuts the baffle. Further preferably, after the nut is tightened, the nut and the ejector fixing plate are welded together after spot welding, as shown in fig. 22.
Step 3, connecting the supporting beam, and performing turning operation;
in a preferred embodiment, 2 short steel wire ropes with equal length are used, one end of each short steel wire rope is connected with the lifting lug on the supporting rod, and the other end of each short steel wire rope is connected with the lifting hook of the crane; the 2 steel wire ropes with the same length as the steel wire ropes connected with the hanging shafts are hooked on a hanging hook of a crane together, the steel wire ropes connected with the hanging shafts are respectively placed in notches at two ends of the supporting rod, and the upper part of the tube bundle component is continuously lifted under the pulling of the crane until the tube bundle component becomes vertical, as shown in fig. 21.
Step 4, dismantling the turnover device;
after the turning-over operation is completed, the fixing bolts and nuts in the supporting assembly, the bolt and nuts in the connecting assembly and the nuts in the baffle plate fixing assembly are disassembled, the main frame is lifted away by a crane, the turning-over operation of the tube bundle assembly can be completed, and the next production procedure is started.
Examples
The auxiliary turning-over device for the tube bundle assembly is applied to the turning-over process of the tube bundle assembly in the production process of the ACP1000 nuclear power project waste heat discharge heat exchanger.
In the tube bundle assembly turn-over assisting device used in this embodiment, the bottom plate 11 of the main frame is a stainless steel plate, and the short square tube 15 is welded to the lower surface, as shown in fig. 4.
The upper surface of the bottom plate is provided with 4 rectangular pipes 12, and the 4 rectangular pipes 12 form a rectangular frame on the bottom plate 11. On the second side of cuboid frame and fourth side, the welding has a plurality of pipe 13 to one side, and at the both ends of second side and fourth side, the contained angle between pipe 13 and the rectangular pipe 12 is 90, and the contained angle a between remaining pipe 13 and the rectangular pipe 12 is 45. On the first side of the rectangular parallelepiped frame, a plurality of arc-shaped connection rings 14 are welded, as shown in fig. 1.
The suspension shaft assembly in this embodiment comprises a baffle ring 16, a suspension shaft 17 and a suspension shaft fixing plate 18, wherein the number of the suspension shaft assemblies is 4, and the suspension shaft assemblies are symmetrically welded on the second side surface and the third side surface of the rectangular frame, as shown in fig. 5-6.
The baffle plate supporting assembly in this embodiment includes a supporting plate 21, a supporting plate fixing seat 22 and an isolation shim plate 23, and the structure of the supporting plate 21 is shown in fig. 9. The support plate 21 is detachably attached to the third side of the rectangular parallelepiped frame by means of the support plate holder 22 and the attachment member.
The connecting assembly in this embodiment, as shown in fig. 11-13, includes three triangular connecting plate holders 31 welded to the rectangular pipe 12, and 4 light holes are provided in the connecting plate 32. The connecting plate 32 and the supporting plate fixing seat 22 are connected together through 4 bolts and 16 nuts, as shown in fig. 14.
The baffle plate fixing assembly in this embodiment includes a fixing head 41, a ram 42, a ram fixing plate 43, a bent pipe 44, and a connecting head 45, as shown in fig. 16. Wherein, be provided with the centre gripping notch 411 that the edge set up to the chamfer on the fixed head 41, the fixed head welds on return bend 44, and return bend 44 welds on connector 45, is threaded connection between connector 45 and the ejector pin 42. The ejector fixing plate 43 is welded to the rectangular tube 12 in the second and fourth sides of the rectangular parallelepiped frame. The ejector rod 42 and the ejector rod fixing plate 43 are fixedly connected by a nut, and an adjusting hole 421 is provided at the lower end of the ejector rod 42.
The support beam in this embodiment includes a support rod 51, and two lifting lugs 52, 2 fixing bolts 53 and 4 fixing nuts 54 symmetrically disposed on the support rod 51, as shown in fig. 18 to 19. Wherein, the two ends of the support rod 51 are provided with notches, and the fixing bolt 53 can penetrate through the notches and is fixedly connected on the support rod through the fixing nut 53.
When in use:
1) the steel wire rope on the crane is used for hooking the hanging shaft 17 on the main frame, the main frame is horizontally lifted and moved to the position above the tube bundle assembly, the tube bundle assembly is sleeved with the main frame from top to bottom, and then the bottom plate and the tube plate are welded together by adopting the pull rib plate.
2) After the tube bundle assembly and the main frame are sleeved, the baffle plate supporting assembly and the main frame are connected into a whole by bolts and nuts through the connecting assembly welded on the main frame, and the contact between the isolation base plate 23 in the baffle plate supporting assembly and the baffle plate in the tube bundle assembly is ensured.
3) The ejector rod 42 penetrates through an ejector rod fixing plate 43 welded on the main frame, then an elbow pipe 44 welded with a fixing head 41 is installed, the position of the fixing head 41 is adjusted, and the clamping notch on the fixing head 41 is ensured to be clamped with the baffle plate. The nut is then tightened so that the fixing head 41 is pressed against the baffle. After the nut is tightened, the nut and the jack fixing plate 43 are welded together by spot welding.
Step 3, connecting the supporting beam, and performing turning operation;
2 short steel wire ropes with equal length are utilized, one end of each short steel wire rope is connected with the lifting lug on the supporting rod, and the other end of each short steel wire rope is connected with the lifting hook of the crane; the 2 steel wire ropes with the same length as the steel wire ropes connected with the hanging shafts are hooked on a hanging hook of a crane together, the steel wire ropes connected with the hanging shafts are respectively placed in notches at two ends of the supporting rod, and are fixedly connected to the supporting rod through a fixing bolt 53 and a fixing nut 54. The upper part of the bundle assembly is continuously lifted under the pulling of the crane until the bundle assembly becomes vertical.
Step 4, dismantling the turnover device;
after the turning-over operation is completed, the fixing bolts 53 and the fixing nuts 54 in the supporting components, the bolts and the nuts in the connecting components and the nuts in the baffle plate fixing components are disassembled, the main frame is lifted away by a crane, the turning-over operation of the tube bundle component can be completed, and the next production process is started.
The tube bundle assembly turnover assisting device provided by the invention is used for turning over the tube bundle assembly without directly contacting with a heat exchange tube, so that the tube bundle assembly is stably turned over, and the tube bundle assembly turnover assisting device is good in safety, convenient to assemble and disassemble, high in flexibility and high in universality.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on an operating state of the present invention, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The present invention has been described above in connection with preferred embodiments, but these embodiments are merely exemplary and merely illustrative. On the basis of the above, the invention can be subjected to various substitutions and modifications, and the substitutions and the modifications are all within the protection scope of the invention.
Claims (3)
1. A method for turning over a tube bundle assembly by using a tube bundle assembly auxiliary turning-over device is characterized by comprising the following steps: the turnover device comprises a main frame and a baffle plate supporting assembly, wherein the main frame comprises a bottom plate (11) and a long pipe (12) arranged on the same side of the bottom plate (11);
the number of the long pipes (12) is 4-8, the long pipes are arranged in parallel, the upper long pipe (12) and the lower long pipe (12) form a group, and a rectangular frame is formed on the bottom plate (11);
in two groups of long pipes (12) forming the cuboid frame, 2 to 5 inclined pipes (13) are arranged between the upper long pipe (12) and the lower long pipe (12) of each group, namely the long pipes (12) in the second side surface and the fourth side surface of the cuboid frame, the included angle between each inclined pipe (13) and the long pipe (12) is 30 to 60 degrees, and the included angle between each inclined pipe (13) and the long pipe (12) is 90 degrees at the two ends of the second side surface and the fourth side surface;
a plurality of connecting rings (14) are arranged on the long pipe (12) in the first side surface of the rectangular frame; the connecting ring (14) is arc-shaped;
the baffle plate supporting assembly comprises a supporting plate (21) and a supporting plate fixing seat (22);
the supporting plate (21) consists of a transverse plate (212) and vertical plates (211) vertically arranged at two ends of the transverse plate (212), the transverse plate (212) comprises a left plate (2121), a flat plate (2122) and a right plate (2123), and the left plate (2121) and the right plate (2123) are symmetrically arranged at two sides of the flat plate (2122);
the support plate (21) is detachably connected to the two long tubes (12) through a support plate fixing seat (22);
the turnover device further comprises a baffle plate fixing component, the baffle plate fixing component is arranged on long pipes (12) on two sides of the rectangular frame with inclined pipes (13), and the baffle plate fixing component comprises:
a fixing head (41) for fixing the baffle plate;
the ejector rod fixing plate (43) is used for connecting the baffle plate fixing component to the main frame;
the ejector rod (42) is used for connecting the fixed head (41) and the ejector rod fixing plate (43);
the baffle plate fixing assembly further comprises an elbow (44) and a connector (45), wherein the elbow (44) is a U-shaped elbow and is formed by bending a steel pipe, and the fixing head (41) is arranged on the end head of the elbow (44); one end of the connector (45) is fixedly connected to the middle of the bent pipe (44), and the other end of the connector is provided with a threaded hole and is connected with the ejector rod (42) through threads;
the turning-over device also comprises a supporting beam;
the method of turning over a bundle assembly comprises the steps of:
step 1, sleeving a main frame on a tube bundle assembly;
step 2, connecting the baffle plate supporting assembly and the baffle plate fixing assembly to the main frame;
step 3, connecting the supporting beam, and performing turning operation;
and 4, removing the turnover device.
2. The method of turning a bundle assembly using a bundle assembly turnover assist device according to claim 1, wherein: the main frame is also provided with a hanging shaft assembly which comprises a baffle ring (16), a hanging shaft (17) and a hanging shaft fixing plate (18);
the hanging shaft assembly is connected on the long pipes (12) on two sides with the inclined pipes (13) in the rectangular frame through the hanging shaft fixing plate (18), namely on the long pipes (12) in the second side and the fourth side of the rectangular frame.
3. The method of turning a bundle assembly using a bundle assembly turnover assist device according to claim 1, wherein: the support beam includes:
a supporting rod (51) for opening the steel wire rope,
and a lifting lug (52) for lifting the support beam.
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| CN201911387405.4A CN110961853B (en) | 2019-12-27 | 2019-12-27 | Tube bundle assembly auxiliary turnover device and turnover method using same |
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| CN201911387405.4A CN110961853B (en) | 2019-12-27 | 2019-12-27 | Tube bundle assembly auxiliary turnover device and turnover method using same |
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| CN110961853B true CN110961853B (en) | 2022-04-22 |
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| CN112247537B (en) * | 2020-10-16 | 2022-07-15 | 抚顺机械设备制造有限公司 | Tube bundle assembly auxiliary turnover mechanism for assembling tube shell heat exchanger |
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| CN105382778A (en) * | 2015-11-27 | 2016-03-09 | 中航成飞民用飞机有限责任公司 | Large-component turnover tool and large-component turnover method |
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| KR101444857B1 (en) * | 2013-04-24 | 2014-09-26 | 삼성중공업 주식회사 | Movable heat exchanger tube bundle handling device and method |
| CN103303783B (en) * | 2013-05-24 | 2014-11-12 | 哈电集团（秦皇岛）重型装备有限公司 | Turnover device for pressure stabilizer |
| CN203474284U (en) * | 2013-09-05 | 2014-03-12 | 卓然(靖江)设备制造有限公司 | Lifting equalizing beam for module of petrochemical industrial furnace |
| CN105108719A (en) * | 2015-08-28 | 2015-12-02 | 艾尼科环保技术(安徽)有限公司 | Electrostatic dust collector pole bar turning-over rack |
| CN105174058B (en) * | 2015-09-17 | 2017-01-25 | 东方电气(广州)重型机器有限公司 | Vertical turnover method for moisture separator reheater pipe system |
| CN205603037U (en) * | 2016-05-16 | 2016-09-28 | 兰州兰石重型装备股份有限公司 | Assembly fixture is lifted by crane in major diameter tube bank |
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| CN206899116U (en) * | 2017-05-18 | 2018-01-19 | 常州工程职业技术学院 | A kind of servicing unit for being easy to tube bank dismounting in shell-and-tube heat exchanger |
| CN108213887B (en) * | 2018-04-03 | 2023-12-26 | 哈电集团（秦皇岛）重型装备有限公司 | Manufacturing and tipping device for heat exchanger tube bundle assembly |
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| CN105382778A (en) * | 2015-11-27 | 2016-03-09 | 中航成飞民用飞机有限责任公司 | Large-component turnover tool and large-component turnover method |
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