CN109748191B - Core-pulling process for floating head heat exchanger - Google Patents
Core-pulling process for floating head heat exchanger Download PDFInfo
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- CN109748191B CN109748191B CN201711085682.0A CN201711085682A CN109748191B CN 109748191 B CN109748191 B CN 109748191B CN 201711085682 A CN201711085682 A CN 201711085682A CN 109748191 B CN109748191 B CN 109748191B
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- heat exchanger
- core
- hoist
- winch
- saddle
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000007667 floating Methods 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The invention provides a core-pulling process of a floating head heat exchanger, which comprises the following steps: arranging a bracket; a supporting base is arranged at the top of the bracket; arranging a plurality of track beams, and arranging a first hoist and a second hoist on the track beams; arranging a winch, a first upper fixed pulley and a first lower fixed pulley, and connecting a steel wire rope of the winch to the core body of the first heat exchanger; starting the winch to enable the core of the first heat exchanger to move out of the shell of the first heat exchanger, and then synchronously placing the core of the first heat exchanger at a designated position on the ground by using the first hoist and the second hoist; arranging a second upper fixed pulley and a second lower fixed pulley, and connecting a steel wire rope of the winch to the core body of the second heat exchanger; and starting the winch, so that the core of the second heat exchanger moves out of the shell of the second heat exchanger, and placing the core of the second heat exchanger at a designated position on the ground. The invention reduces the use cost of the large-scale hoisting machinery machine; the construction time is shortened, and the labor efficiency of maintenance operation is improved; the maintenance cost is saved.
Description
Technical Field
The invention relates to the field of heat exchanger maintenance, in particular to a core pulling process of a floating head heat exchanger.
Background
The ammonia still heat exchanger that uses among the prior art, for example Bao Steel chemical industry company, ammonia still heat exchanger totally 3 groups 6, every two are a set of about every, for floating head heat exchanger, belongs to the single shell side structure of multitube journey, is the material medium in the shell side, and the tube side is the cooling water. Due to ammonia corrosion and impurity blockage, the heat exchanger needs to be subjected to loose core cleaning and leakage catching for many times every year, and leakage of a leaked tube bundle is blocked.
Because the three-ammonia-distilling heat exchanger is of a multi-tube-pass structure, if the original shell of the heat exchanger is utilized to press and catch leakage, the tube bundle where the leakage point is located cannot be accurately found, but water permeating into the leakage point can emerge from a plurality of tube bundles through the end socket, and the leakage and blockage conditions are very easily caused. Meanwhile, the heat exchanger is heavy, core-pulling operation is very difficult, and large-scale hoisting machinery needs to be used for multiple times to be matched and implemented.
The heat exchanger needs to perform core-pulling, cleaning, pressure testing and leaking stoppage operation once every 3 months, the operation needs to be performed 24 times per year on average, 50 motor cranes are put in 50 shifts per year in total, and the mechanical shift cost is very high.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a core pulling process for a floating head heat exchanger, so as to overcome the defects in the prior art.
In order to achieve the above object, the present invention provides a core pulling process for a floating head heat exchanger, wherein the heat exchanger is provided with a plurality of groups and is arranged in parallel, each heat exchanger comprises a core body and a seal head for sealing the end part of the core body, and the process comprises the following steps:
s1, arranging a support, wherein the support is close to the end socket and comprises upright posts and cross beams, the upright posts and the cross beams form a frame structure, and each group of heat exchangers are located between two adjacent upright posts;
s2, arranging a supporting base at the top of the bracket, and fixedly connecting the supporting base to the cross beam;
s3, arranging a plurality of track beams at the bottom of the cross beam, wherein each track beam is positioned above the core body of the corresponding heat exchanger in the moving direction, adjacent track beams are communicated, and a first hoist and a second hoist are arranged on the track beams;
s4, arranging a winch on the supporting base at a position corresponding to the first heat exchanger, and fixedly connecting the winch to the supporting base through a bolt; arranging a first upper fixed pulley and a first lower fixed pulley on the bracket corresponding to the position of the first heat exchanger, and enabling a steel wire rope of the winch to sequentially pass through the first upper fixed pulley and the first lower fixed pulley and be connected to a core body of the first heat exchanger;
s5, starting a winch to enable the first end of the core body of the first heat exchanger to slowly move out of the shell of the first heat exchanger, suspending the winch, lining a first saddle on the lower portion, close to the first end, of the core body of the first heat exchanger, and hanging a first hoist on the first saddle; continuing to operate the winch to enable the core of the first heat exchanger to slowly move, lining a second saddle on the lower portion, close to the second end, of the core of the first heat exchanger when the second end of the core of the first heat exchanger is about to move out of the shell of the first heat exchanger, and hanging a second hoist on the second saddle; continuously operating the winch until the core of the first heat exchanger is completely drawn out of the shell of the first heat exchanger, removing a steel wire rope of the winch, and synchronously placing the core of the first heat exchanger at a designated position on the ground by using the first hoist and the second hoist;
s6, detaching the winch from the supporting base, moving the winch to a position, corresponding to the second heat exchanger, on the supporting base, fixedly connecting the winch to the supporting base through bolts, and moving the first hoist and the second hoist to a track beam corresponding to the second heat exchanger;
s7, arranging a second upper fixed pulley and a second lower fixed pulley on the bracket corresponding to the position of the second heat exchanger, and enabling a steel wire rope of the winch to sequentially pass through the second upper fixed pulley and the second lower fixed pulley and be connected to the core body of the second heat exchanger;
s8, starting a winch to enable the first end of the core body of the second heat exchanger to slowly move out of the shell of the second heat exchanger, suspending the winch, lining a first saddle on the lower portion, close to the first end, of the core body of the second heat exchanger, and hanging a second hoist on the first saddle; continuing to operate the winch to enable the core of the second heat exchanger to slowly move, lining a second saddle on the lower portion, close to the second end, of the core of the second heat exchanger when the second end of the core of the second heat exchanger is about to move out of the shell of the second heat exchanger, and hanging the first hoist on the second saddle; and continuously operating the winch until the core of the second heat exchanger is completely drawn out of the shell of the second heat exchanger, removing a steel wire rope of the winch, and synchronously placing the core of the second heat exchanger at a specified position on the ground by using the first hoist and the second hoist.
Preferably, the method further comprises the steps of: s9, detaching the winch from the supporting base, moving the winch to a position, corresponding to a third heat exchanger, on the supporting base, fixedly connecting the winch to the supporting base through bolts, and moving the first hoist and the second hoist to a track beam corresponding to the third heat exchanger; s10, arranging a third upper fixed pulley and a third lower fixed pulley on the bracket corresponding to the position of the third heat exchanger, and enabling a steel wire rope of the winch to sequentially pass through the third upper fixed pulley and the third lower fixed pulley and be connected to the core body of the third heat exchanger; s11, starting a winch to enable the first end of the core body of the third heat exchanger to slowly move out of the shell of the third heat exchanger, suspending the winch, lining a first saddle on the lower portion, close to the first end, of the core body of the third heat exchanger, and hanging a first hoist on the first saddle; continuing to operate the winch to enable the core of the third heat exchanger to slowly move, lining a second saddle on the lower portion, close to the second end, of the core of the third heat exchanger when the second end of the core of the third heat exchanger is about to move out of the shell of the third heat exchanger, and hanging a second hoist on the second saddle; and continuously operating the winch until the core of the third heat exchanger is completely drawn out of the shell of the third heat exchanger, removing a steel wire rope of the winch, and synchronously placing the core of the third heat exchanger at a specified position on the ground by using the first hoist and the second hoist.
Preferably, there are three track beams, and adjacent track beams are connected through bends.
Preferably, the support base includes two H-shaped steels arranged in parallel, and lubricating oil is added between the hoist and the support base and then the hoist is moved in a length direction of the H-shaped steel in step S6 or S9.
Preferably, in steps S4, S7, or S10, a connection is welded at an end of the core of the heat exchanger, and then a wire rope is tied to the connection.
Preferably, in step S1, a foundation is made of reinforced concrete on the ground, and then the bottom of the pillar is inserted into the foundation.
Preferably, in step S2, the supporting base is fixed on the beam by bolts, and leveled by thin iron pads, and after the bolts are fastened and the levelness of the foundation is checked to meet the requirement, the connecting position of the supporting base and the beam is fixed by full welding.
Preferably, the end of the rail beam is provided with a stopper.
Preferably, the first saddle and the second saddle have the same structure and comprise a saddle body, the saddle body is provided with a fixing groove with a shape matched with the outer peripheral surface of the core body, and two sides of the saddle body are respectively provided with a lifting lug.
As described above, the core pulling process for the floating head heat exchanger according to the present invention has the following beneficial effects: the use cost of the large-scale hoisting machinery is reduced; the construction process is simplified, the construction time is shortened, and the labor efficiency of maintenance operation is improved; the maintenance cost is saved.
Drawings
Fig. 1 is a schematic structural view of a mounting bracket of the present invention.
Fig. 2 is a schematic structural view of the installation rail beam of the present invention.
Fig. 3 is a schematic drawing showing the configuration of the first group of heat exchangers according to the present invention when the cores are extracted.
Fig. 4 is a partial structural schematic diagram of the connection of the hoist and the cross beam.
Fig. 5 is a schematic structural view of the first saddle or the second saddle.
Description of the element reference numerals
1 Heat exchanger
11 first heat exchanger
12 second heat exchanger
13 third heat exchanger
14 core body
141 connecting part
15 end socket
2 support
21 column
22 Cross member
3 support the base
31 strength rib
4 track beam
41 first hoist
42 second hoist
43 curve
44 stop
5 hoisting machine
51 first upper fixed pulley
52 first lower fixed pulley
53 steel wire rope
61 first saddle
62 second saddle
63 saddle body
631 fixing groove
632 lifting lug
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship may be made without substantial technical changes.
As shown in fig. 1 to 5, the present invention provides a core pulling process for a floating head heat exchanger, wherein a plurality of sets of heat exchangers 1 are arranged in parallel, and in an embodiment of the present invention, the heat exchanger 1 includes three sets of heat exchangers, which are a first heat exchanger 11, a second heat exchanger 12, and a third heat exchanger 13. As shown in fig. 3, each of the heat exchangers 1 includes a core 14 and a head 15 for sealing an end of the core 14, the core 14 is located in a casing of the heat exchanger 1, and the end is sealed by the head 15, and the core pulling process of the floating head heat exchanger includes the following steps:
s1, as shown in FIG. 1, arranging a support 2, wherein the support 2 is close to the end socket 15, the support 2 comprises upright posts 21 and cross beams 22, a plurality of upright posts 21 and cross beams 22 form a permanent steel frame structure, and each group of heat exchangers 1 is located between two adjacent upright posts 21; the upright posts 21 and the cross beams 22 are made of H-shaped steel, the angle steel diagonal braces are fixed, the length and the height are specifically determined according to the size and the distance of the heat exchanger, a foundation is made of reinforced concrete on the ground, and then the bottom of the upright posts 21 is inserted into the foundation to ensure stability. The design and installation of the bracket are calculated through strict stress checking so as to meet the use requirement, and after the installation of the bracket is finished, the cable for the bracket is required to be introduced into the original grounding electrode on the spot so as to avoid generating static electricity.
S2, arranging a supporting base 3 on the top of the support 2, wherein the supporting base 3 is used for supporting a winch 5 and fixedly connecting the supporting base 3 to the cross beam 22; preferably, the supporting base 3 is fixed on the cross beam 22 through bolt connection and leveled by using thin iron pads, and after the bolts are fastened and the levelness of the foundation is checked to meet the requirements, the connecting position of the supporting base 3 and the cross beam 22 is fixed through full welding. And drilling foundation bolt holes at the positions corresponding to the heat exchangers of each group on the support base 3 respectively, wherein the foundation bolt holes are used for connecting a winch, and the two sides of each bolt hole are fixed by using a reinforcing rib made of 8mm steel plates.
S3, a plurality of track beams 4 are arranged at the bottom of the beam 22, each track beam 4 is located above the core 14 of the corresponding heat exchanger 1 in the moving direction, the adjacent track beams 4 are communicated, and the first hoist 41 and the second hoist 42 are arranged on the track beams 4, so as to ensure that the core 14 can be lifted when the first hoist 41 and the second hoist 42 move.
S4, arranging a winch 5 on the supporting base 3 at a position corresponding to the first heat exchanger 11, and fixedly connecting the winch 5 to the supporting base 3 through bolts; a first upper fixed sheave 51 and a first lower fixed sheave 52 are provided on the frame 2 at positions corresponding to the first heat exchanger 11, the first upper fixed sheave 51 and the first lower fixed sheave 52 are detachably attached to the frame 2, and a wire rope 53 of the hoist 5 is passed through the first upper fixed sheave 51 and the first lower fixed sheave 52 in this order and attached to the core 14 of the first heat exchanger 11.
S5, starting the hoist 5, so that the first end of the core 14 of the first heat exchanger is slowly moved out of the shell of the first heat exchanger 11, normally when the first end of the core 14 of the first heat exchanger is slowly moved out of the shell of the first heat exchanger 11 by about 0.5m, suspending the hoist 5, lining the first saddle 61 on the lower part of the core 14 of the first heat exchanger close to the first end, and hanging the first hoist 41 on the first saddle 61; continuing to operate the hoist 5 so that the core 14 of the first heat exchanger is slowly moved, pausing again when the second end of the core 14 of the first heat exchanger is about to be moved out of the shell of the first heat exchanger 11, typically when the second end of the core 14 of the first heat exchanger is still 0.5m inside the shell, lining a second saddle 62 on the lower portion of the core 14 of the first heat exchanger adjacent the second end, and suspending the second hoist 42 on the second saddle 62; continuing to operate the winch 5 until the core 14 of the first heat exchanger is completely drawn out of the shell of the first heat exchanger 11, removing a steel wire rope of the winch, and synchronously placing the core 14 of the first heat exchanger 11 at a designated position on the ground by using the first hoist 41 and the second hoist 42; the first saddle 61 and the second saddle 62 are used for protecting the core 14 of the first heat exchanger in the core pulling process, and the core 14 of the first heat exchanger is prevented from being damaged in the core pulling hoisting process.
S6, detaching the winch 5 from the supporting base 3, sliding the winch 5 to a position on the supporting base 3 corresponding to the second heat exchanger 12, fixedly connecting the winch 5 to the supporting base 3 through bolts, and moving the first hoist 41 and the second hoist 42 to the track beam 4 corresponding to the second heat exchanger 12.
S7, arranging a second upper fixed pulley and a second lower fixed pulley on the bracket 2 corresponding to the position of the second heat exchanger 12, and sequentially passing the wire rope 53 of the winding machine 5 through the second upper fixed pulley and the second lower fixed pulley and connecting to the core 14 of the second heat exchanger 12.
S8, starting the hoist 5, so that the first end of the core 14 of the second heat exchanger is slowly moved out of the shell of the second heat exchanger 12, stopping the hoist 5, lining the first saddle 61 on the lower part of the core 14 of the second heat exchanger close to the first end, and hanging the second hoist 42 on the first saddle 61, usually when the first end of the core 14 of the second heat exchanger is slowly moved out of the shell of the second heat exchanger 12 by about 0.5 m; continuing to operate the hoist 5 so that the core 14 of the second heat exchanger is slowly moved, pausing again when the second end of the core 14 of the second heat exchanger is about to be moved out of the shell of the second heat exchanger 12, typically when the second end of the core 14 of the second heat exchanger is still 0.5m inside the shell, lining a second saddle 62 on the lower portion of the core 14 of the second heat exchanger adjacent the second end, and suspending the first hoist 41 on the second saddle 62; and (3) continuing to operate the winch 5 until the core 14 of the second heat exchanger is completely pulled out of the shell of the second heat exchanger 12, removing a wire rope of the winch, and synchronously placing the core 14 of the second heat exchanger 12 at a specified position on the ground by using the first hoist 41 and the second hoist 42.
Preferably, the method further comprises a step S9 of detaching the winch 5 from the supporting base 3, sliding the winch 5 to a position on the supporting base 3 corresponding to the third heat exchanger 13, fixedly connecting the winch 5 to the supporting base 3 through bolts, and moving the first hoist 41 and the second hoist 42 to the track beam 4 corresponding to the third heat exchanger 13; s10, arranging a third upper fixed pulley and a third lower fixed pulley on the bracket 2 corresponding to the position of the third heat exchanger 13, and sequentially passing the steel wire rope 53 of the winch 5 through the third upper fixed pulley and the third lower fixed pulley and connecting the steel wire rope to the core 14 of the third heat exchanger 13; s11, starting the hoist 5, so that the first end of the core 14 of the third heat exchanger is slowly moved out of the shell of the third heat exchanger 13, stopping the hoist 5, lining the first saddle 61 on the lower part of the core 14 of the third heat exchanger close to the first end, and hanging the first hoist 41 on the first saddle 61, usually when the first end of the core 14 of the third heat exchanger is slowly moved out of the shell of the third heat exchanger 13 by about 0.5 m; continuing to operate the hoist 5 so that the core 14 of the third heat exchanger is slowly moved, pausing again when the second end of the core 14 of the third heat exchanger is about to be moved out of the shell of the third heat exchanger 13, typically when the second end of the core 14 of the third heat exchanger is still 0.5m inside the shell, lining a second saddle 62 on the lower portion of the core 14 of the third heat exchanger adjacent the second end, and suspending the second hoist 42 on the second saddle 62; and (3) continuing to operate the winch 5 until the core 14 of the third heat exchanger is completely drawn out of the shell of the third heat exchanger 13, removing a wire rope of the winch, and synchronously placing the core 14 of the third heat exchanger 13 at a specified position on the ground by using the first hoist 41 and the second hoist 42. After the core of each group of heat exchangers is extracted, a core hydraulic test is required, and then plugging is carried out.
Preferably, the first upper fixed pulley, the second upper fixed pulley and the third upper fixed pulley are identical in structure and are detachably arranged, so that repeated installation and use are facilitated, and the first lower fixed pulley, the second lower fixed pulley and the third lower fixed pulley are identical in structure and are detachably arranged, so that repeated installation and use are facilitated.
As shown in fig. 2, preferably, there are three track beams 4, adjacent track beams 4 are connected by bends 43, the connected track beams 4 are S-shaped and are welded and fixed on the bracket beam, and the end of the track beam 4 is provided with a stop 44 for preventing the first hoist and the second hoist from sliding.
As shown in fig. 4, preferably, the support base 3 includes two H-shaped steels arranged in parallel, and lubricating oil is added between the hoist 5 and the support base 3 and then the hoist 5 is moved in the length direction of the H-shaped steel in step S6 or S9.
As shown in fig. 2, preferably, in steps S4, S7 or S10, a connection 141 is welded to an end of the core 14 of the heat exchanger, and then the wire rope 53 is tied to the connection 141, wherein the connection 141 may be selected from conventional lifting lugs.
As shown in fig. 5, preferably, the first saddle 61 and the second saddle 62 have the same structure, and include a saddle body 63, the saddle body 63 is provided with a fixing groove 631 having a shape matching with the outer peripheral surface of the core 14, so as to fix the core 14, and two sides of the saddle body 63 are respectively provided with a lifting lug 632, so as to connect the lifting rope of the first hoist or the second hoist.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (9)
1. The utility model provides a floating head heat exchanger technique of loosing core, heat exchanger (1) are equipped with multiunit and parallel arrangement, every heat exchanger (1) include core (14) and sealed head (15) of core (14) tip, its characterized in that includes following step:
s1, arranging a support (2), wherein the support (2) is close to the end socket (15), the support (2) comprises upright columns (21) and cross beams (22), a plurality of upright columns (21) and cross beams (22) form a frame structure, and each group of heat exchangers (1) is positioned between two adjacent upright columns (21);
s2, arranging a supporting base (3) at the top of the support (2), and fixedly connecting the supporting base (3) to the cross beam (22);
s3, arranging a plurality of track beams (4) at the bottom of the cross beam (22), wherein each track beam (4) is located above the moving direction of the core (14) of the corresponding heat exchanger (1), the adjacent track beams (4) are communicated, and a first hoist (41) and a second hoist (42) are arranged on the track beams (4);
s4, arranging a winch (5) on the supporting base (3) at a position corresponding to the first heat exchanger (11), and fixedly connecting the winch (5) on the supporting base (3) through bolts; arranging a first upper fixed pulley (51) and a first lower fixed pulley (52) on the bracket (2) corresponding to the position of the first heat exchanger (11), and sequentially passing a steel wire rope (53) of the winch (5) through the first upper fixed pulley (51) and the first lower fixed pulley (52) and connecting the steel wire rope to a core (14) of the first heat exchanger (11);
s5, starting the winch (5), enabling the first end of the core (14) of the first heat exchanger to slowly move out of the shell of the first heat exchanger (11), suspending the winch (5), lining a first saddle (61) on the core (14) of the first heat exchanger close to the lower part of the first end, and hanging a first hoist (41) on the first saddle (61); continuing to operate the hoist (5) so that the core (14) of the first heat exchanger is slowly moved, lining a second saddle (62) on the core (14) of the first heat exchanger near the lower portion of the second end when the second end of the core (14) of the first heat exchanger is about to be moved out of the shell of the first heat exchanger (11), and hanging a second hoist (42) on the second saddle (62); continuously operating the winch (5) until the core (14) of the first heat exchanger is completely drawn out of the shell of the first heat exchanger (11), removing a steel wire rope of the winch, and synchronously placing the core (14) of the first heat exchanger (11) at a designated position on the ground by using a first hoist (41) and a second hoist (42);
s6, detaching a winch (5) from the supporting base (3), moving the winch to a position, corresponding to the second heat exchanger (12), on the supporting base (3), fixedly connecting the winch (5) to the supporting base (3) through bolts, and moving the first hoist (41) and the second hoist (42) to a track beam (4) corresponding to the second heat exchanger (12);
s7, arranging a second upper fixed pulley and a second lower fixed pulley on the bracket (2) corresponding to the position of the second heat exchanger (12), and enabling a steel wire rope (53) of the winch (5) to sequentially pass through the second upper fixed pulley and the second lower fixed pulley and be connected to a core body (14) of the second heat exchanger (12);
s8, starting the hoist (5) to make the first end of the core (14) of the second heat exchanger slowly move out of the shell of the second heat exchanger (12), suspending the hoist (5), lining a first saddle (61) on the core (14) of the second heat exchanger near the lower part of the first end, and hanging the second hoist (42) on the first saddle (61); continuing to operate the hoist (5) so that the core (14) of the second heat exchanger is slowly moved, lining a second saddle (62) on the core (14) of the second heat exchanger near the lower part of the second end when the second end of the core (14) of the second heat exchanger is about to move out of the shell of the second heat exchanger (12), and hanging the first hoist (41) on the second saddle (62); and (3) continuing to operate the winch (5) until the core (14) of the second heat exchanger is completely drawn out of the shell of the second heat exchanger (12), removing a wire rope of the winch, and synchronously placing the core (14) of the second heat exchanger (12) at a specified position on the ground by using the first hoist (41) and the second hoist (42).
2. The core pulling process of the floating head heat exchanger according to claim 1, further comprising the steps of:
s9, detaching a winch (5) from the supporting base (3), moving the winch to a position, corresponding to a third heat exchanger (13), on the supporting base (3), fixedly connecting the winch (5) to the supporting base (3) through bolts, and moving the first hoist (41) and the second hoist (42) to a track beam (4) corresponding to the third heat exchanger (13);
s10, arranging a third upper fixed pulley and a third lower fixed pulley on the bracket (2) corresponding to the position of the third heat exchanger (13), and enabling a steel wire rope (53) of the winch (5) to sequentially pass through the third upper fixed pulley and the third lower fixed pulley and be connected to a core body (14) of the third heat exchanger (13);
s11, starting the winch (5), enabling the first end of the core (14) of the third heat exchanger to slowly move out of the shell of the third heat exchanger (13), suspending the winch (5), lining a first saddle (61) on the core (14) of the third heat exchanger at the lower part close to the first end, and hanging a first hoist (41) on the first saddle (61); continuing to operate the hoist (5) so that the core (14) of the third heat exchanger is slowly moved, lining a second saddle (62) on the core (14) of the third heat exchanger near the lower portion of the second end when the second end of the core (14) of the third heat exchanger is about to be moved out of the shell of the third heat exchanger (13), and hanging a second hoist (42) on the second saddle (62); and (3) continuing to operate the winch (5) until the core (14) of the third heat exchanger is completely drawn out of the shell of the third heat exchanger (13), removing a wire rope of the winch, and synchronously placing the core (14) of the third heat exchanger (13) at a specified position on the ground by using the first hoist (41) and the second hoist (42).
3. The core pulling process of the floating head heat exchanger according to claim 2, characterized in that: the number of the track beams (4) is three, and the adjacent track beams (4) are connected through bent pipes (43).
4. The core pulling process of the floating head heat exchanger according to claim 2, characterized in that: the support base (3) includes two H-shaped steels arranged in parallel, and lubricating oil is added between the hoist (5) and the support base (3) and then the hoist (5) is moved in the length direction of the H-shaped steels in step S6 or S9.
5. The core pulling process of the floating head heat exchanger according to claim 2, characterized in that: in steps S4, S7, or S10, a connection (141) is welded to an end of a core (14) of the heat exchanger, and then a wire rope (53) is tied to the connection (141).
6. The core pulling process of the floating head heat exchanger according to claim 1, characterized in that: in step S1, a foundation is made of reinforced concrete on the ground, and then the bottom of the pillar (21) is inserted into the foundation.
7. The core pulling process of the floating head heat exchanger according to claim 1, characterized in that: in step S2, the supporting base (3) is fixed on the cross beam (22) in a bolt connection mode, a thin sizing block is used for leveling, and after the bolt is fastened and the levelness of the foundation is checked to meet the requirements, the connecting position of the supporting base (3) and the cross beam (22) is fixed in a full-welding mode.
8. The core pulling process of the floating head heat exchanger according to claim 1, characterized in that: and a stop block (44) is arranged at the end part of the track beam (4).
9. The core pulling process of the floating head heat exchanger according to claim 1, characterized in that: the first saddle (61) and the second saddle (62) have the same structure and comprise a saddle body (63), a fixing groove (631) with the shape matched with the peripheral surface of the core body (14) is formed in the saddle body (63), and lifting lugs (632) are arranged on two sides of the saddle body (63).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711085682.0A CN109748191B (en) | 2017-11-07 | 2017-11-07 | Core-pulling process for floating head heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711085682.0A CN109748191B (en) | 2017-11-07 | 2017-11-07 | Core-pulling process for floating head heat exchanger |
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| Publication Number | Publication Date |
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| CN109748191A CN109748191A (en) | 2019-05-14 |
| CN109748191B true CN109748191B (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711085682.0A Active CN109748191B (en) | 2017-11-07 | 2017-11-07 | Core-pulling process for floating head heat exchanger |
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| CN111633398A (en) * | 2020-06-17 | 2020-09-08 | 森松（江苏）重工有限公司 | Heat exchange equipment tube bundle mounting and dismounting device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202006361U (en) * | 2011-01-24 | 2011-10-12 | 中国石油天然气股份有限公司西部管道新疆输油分公司 | Core extraction machine |
| CN204508567U (en) * | 2015-02-03 | 2015-07-29 | 寿光市亚亨节能设备制造有限公司 | A kind of spiral-plate heat exchanger turning device |
| CN204607359U (en) * | 2015-02-09 | 2015-09-02 | 中江能源回收(上海)有限公司 | Structure is hung in propping up of a kind of fused salt heat exchanging device |
| CN205245880U (en) * | 2015-12-21 | 2016-05-18 | 邢建文 | Heat exchanger wiper mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050279973A1 (en) * | 2004-03-09 | 2005-12-22 | Rea Jared A | Luggage cart vertical reciprocating conveyor |
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2017
- 2017-11-07 CN CN201711085682.0A patent/CN109748191B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202006361U (en) * | 2011-01-24 | 2011-10-12 | 中国石油天然气股份有限公司西部管道新疆输油分公司 | Core extraction machine |
| CN204508567U (en) * | 2015-02-03 | 2015-07-29 | 寿光市亚亨节能设备制造有限公司 | A kind of spiral-plate heat exchanger turning device |
| CN204607359U (en) * | 2015-02-09 | 2015-09-02 | 中江能源回收(上海)有限公司 | Structure is hung in propping up of a kind of fused salt heat exchanging device |
| CN205245880U (en) * | 2015-12-21 | 2016-05-18 | 邢建文 | Heat exchanger wiper mechanism |
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| CN109748191A (en) | 2019-05-14 |
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