JPH03230097A - Tube bundle drawing and inserting apparatus for lateral multitube type heat exchanger - Google Patents

Abstract

PURPOSE:To draw and insert a tube bundle without damaging a shell, etc., by incorporating lateral position regulating means in supporting means of sliders of frontmost and rearmost rows and providing drive means for driving to draw and insert the bundle from/to a truck body. CONSTITUTION:Support jigs 15 for level-adjustably supporting the lower ends of tube sheets C or baffle plates D are disposed on sliders 13a, 13b, 13c, and each jig 15 has lateral position regulating means 23 for regulating a lateral position. Pulleys 35a-35e are provided in a winding unit 16. When a tube bundle B is drawn, one end of a wire 35 is wound on a drum 16a, engaged with the pulley 35e through a pulley 14c of a coupler 14 for mounting the wire 35 on the sheet C, further engaged with the pulleys 35a, 35b through a pulley 34b, the other end of the wire 35 is wound on the drum 16a, the drum 16a is driven to be wound to drive the bundle B in a drawing direction. When the bundle B is inserted, the wire 35 is driven to wind the drum 16a and driven in a direction for inserting the bundle B.

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a method for pulling out a tube bundle of a horizontal multi-tube heat exchanger installed at a predetermined location from within its shell for maintenance or the like, or after maintenance. This device relates to a device for pushing a tube bundle into a shell, and is particularly designed to prevent the center of the tube bundle from swinging against the tube when being pulled out or pushed in.
The present invention also relates to a device for pulling out and pushing in a bundle of tubes in a horizontal multi-tube heat exchanger, which transports the bundle of drawer tubes to a predetermined maintenance location and from the predetermined maintenance location to a shell installation location.

2. Conventional technology In general, horizontal shell-and-tube heat exchangers, which are installed horizontally at a predetermined location, are often used as heat exchangers in process plants such as oil refineries and chemical plants. Several or more of these horizontal multitubular heat exchangers are installed in one place.

These horizontal multi-tube heat exchangers have a large number of heat transfer tubes (tubes), and their front ends are shaped like disk-shaped tube sheets (tube notes).
The heat exchanger tube is installed through the baffle plate (
A tube bundle consisting of a bundle of L heat transfer tubes is installed through a baffle plate) or inserted into a cylindrical shell, and in the case of the above plant, the tube bundle has a length of Some of them are about 6 to 16 meters long and weigh more than about 10 tons.

In the above-mentioned plants, etc., these tube handles are periodically pulled out from inside the shell for maintenance etc., transported to a predetermined place (washing area) for maintenance/inspection, and the inspected tube handles are returned to the shell. I had to insert it inside.

Conventionally, when pulling out the tube bundle of the above-mentioned horizontal multitubular heat exchanger from inside the shell or pushing the tube bundle into the shell, a plurality of crane trucks have been used to perform the work.

That is, as shown in FIG. 6, first, the lid of shell A (
Remove the head plate), place one crane truck 1 in front of the heat exchanger A, and place the other crane truck 2 (
The main body is located near the side of the heat exchanger A, and the wire 3 of the first crane truck 1 is connected and fixed to the tube notebook 7 at the front end of the tube handle 6 via the pulley 4.5. , by winding up the wire 3 of the first crane car 1 while suspending one end of the tube handle 6 by the second crane car 2, the tube handle 6 is horizontally moved by a predetermined length via the pulley 45. slowly pull it out.

When the tube handle 6 is pulled out halfway, the other wire 8 suspended from the first crane truck I
Hang the tube bundle 6 on one end of the tube bundle 6 and suspend it around the center using the second crane truck 2. In the second state, pull out the bundle while adjusting the wire 3 of the first crane truck in the same way as above. Continue to completely remove the tube buff dollar 6 from inside the SOEL A.

Then, the extracted tube bundle 6 is once lowered to the ground, the crane truck 1.2 is evacuated, and the extracted tube bundle 6 is loaded onto a transport truck and transported to a washing area.

Then, the tube handle 6 that has been cleaned and inspected at the washing area is transported again by a transport truck to the installation position of the shell A, and, as above, two crane trucks! ,2
It is lifted up by the shell, and one end of it is aligned with the edge of the shell, and it is pushed into the shell.

[Problem to be solved by the invention 1 However, in the conventional technology, multiple crane trucks are used to pull out and push in the tube bundle 6. Therefore, if there are individual differences in the operation of each crane truck, the tube bundle 6 6 tends to tilt, in which case it is necessary for each operator to operate in coordination with each other, such as by operating only a specific crane depending on the tilt, which requires skilled operating techniques and requires coordination. Mistakes are likely to occur, and center runout may occur between the tube bundle 6 and shell A when punching out or pushing in. At that time, the inside of shell A may be rubbed with the baffle plate 9, etc., and the tube bundle 6 and shell A may be damaged. There was a problem with it being damaged.

In other words, when pulling out using crane trucks 1 and 2,
At each crane truck 1 and 2, each driver handles the tube bundle 6.
The tube bundle 6 is suspended while adjusting the direction of the crane so that the center runout with respect to the shell A does not occur, and the pulling direction is set by the crane wheel 1 in front of the wire 3.
It is difficult to adjust by using the hanging wire 8 and the drawing wire 3, and if the drawing direction is eccentric and the drawing direction is eccentric, the heat transfer tubes 6a and 6a may be damaged inside the shell A. Compressive force due to bending and pull-out force acts between shell A and baffle plates 99, and in some cases, baffle plates 9, 9, etc. press against the inner wall of shell A. The heat exchanger tubes 6a and the baffle plate 9 will be bent due to excessive pulling force.

Furthermore, if the tube is eccentric, the expanded tube portion of the tube notebook 7 through which the heat transfer tube 6a passes will become loose, causing liquid leakage, making it difficult to repair the leaking portion, and making it difficult to repair the portion. However, there is a problem in that the tube bundle is easily damaged after being inserted, and as a result, liquid tends to leak easily.

If a liquid leak occurs, not only will it cause an emergency shutdown of the plant, but if the liquid is used for flammable liquids, it may leak outside and cause a fire, and it will take time to repair. It's coming.

Also, tube bread!・When pushing in the lever 6, using the conventional technique using the crane truck 1.2, it is difficult to align the initial alignment and alignment during pushing in, and if the center is misaligned, the same problem as when pulling out Soful plate 9,9
There were problems such as stiffening of the inner wall of the shell and bending of the heat exchanger tubes due to...

Then, the tube bundle 6 cannot be carried to the washing area while being suspended by the crane truck 12, and must be loaded onto a new transport truck and transported, and a large number of tube bundles must be pulled out and pushed in in a short period of time. It was inconvenient in some cases.

This invention has been made in view of the above circumstances, and its objects are to enable the tube bundle to be pulled out from inside the shell without causing the tube bundle to become eccentric with respect to the shell, and to push the tube bundle into the shell. When inserting, the tube bundle can be reliably centered with respect to the shell, and in any case, the tube bundle can be pulled out and pushed in without having to replace the shell, etc., and the tube bundle can be moved without using other transportation means. An object of the present invention is to provide a device for pulling out and pushing in a tube bundle in a horizontal multi-tube heat exchanger that can be transported to a predetermined location.

: Means for Solving the Problems: 1 A device for pulling out and pushing in a tube bundle in a horizontal multi-tube heat exchanger according to the present invention is such that one end of each of a large number of heat transfer tubes penetrates a tube sheet, and A device for pulling out and pushing a tube bundle in a horizontal multi-tubular heat exchanger for pulling out and pushing a tube bundle configured by passing through a plurality of baffle plates from inside a cylindrical shell along its longitudinal direction. A position fixing means for fixing the position of the trolley body relative to the heat exchanger when the tube bundle is pulled out and pushed in is provided on the trolley body having a plurality of wheels that can change the position of the trolley, and the position fixing means fixes the position of the trolley. A lifting means is provided for raising and lowering the trolley body during the flight to adjust its height position, and on the upper surface of the trolley, the lifting means extends in the width direction of the trolley body and extends along its longitudinal direction. A plurality of sliders movable along the direction are provided, and these sliders are provided with support means for supporting the lower end peripheral edge of the tube plate or baffle plate in the tube bundle in a height-adjustable manner, Of these sliders, at least the support means of the sliders in the front row and the rear row have one width direction position adjustment means for adjusting the width direction position thereof, and furthermore, the support means for the sliders in the front row and the last row are provided with one width direction position adjustment means, and furthermore, the support means for the sliders in the front row and the last row are attached to the navigation tube plate on the bogie body. The tube bundle is characterized in that it is provided with a driving means connected to the connected connector for pulling out and pushing the tube bundle.

[Function] According to the device for pulling out and pushing in a tube bundle in a horizontal multi-tube heat exchanger according to the present invention, when pulling out a tube bundle,
First, move the trolley in front of the heat exchanger, align it along its extension line, drive the lifting means to raise the trolley body, adjust its height, and then move the trolley in front of the heat exchanger. The trolley body is fixed to the support legs by position fixing means.

Then, while all the sliders on the truck are moved to the end of the soil, the connectors are fixed to the tube plate of the tube bundle.

Next, the tube sheet is pulled in the drawing direction by a driving means connected to the connector, and a predetermined distance (for example, about 60 cm) is pulled.
When the tube bundle is pulled out, the slider in the front row is moved below the tube sheet, and the height of the support means is adjusted to support the lower edge of the tube sheet.

At this time, the position of the support means in the width direction is adjusted to achieve accurate center alignment.

Next, after alignment, the driving means is further activated to pull out the tube bundle to a predetermined length.

Then, by moving the next slider to the position of the pulled-out baffle plate and adjusting the height position of the support means, the lower end periphery of the baffle plate is supported, and the driving means is driven again to pull out the tube bundle. Then, at every predetermined extraction, the drawn baffle plate is pulled out while being supported in the same manner as above by the support means of the other slider.

In this way, after adjusting the width direction and aligning the center using the supporting means of the slider in the front row, the slider is moved along the extension line of the shell while supporting the tube bundle at multiple locations in the longitudinal direction. By pulling out the tube bundle, the tube bundle can be pulled out smoothly with almost no misalignment in the vertical and horizontal directions.

Next, the tube bundle is pulled out as described above, and the tube bundle is placed on the trolley in a state where it is placed in a cage, and its wheels are directed, for example, in a direction perpendicular to the pulling direction, the position fixing means is released, and the elevating means is driven. The truck body is lowered, the wheels are brought into contact with the ground, and the truck is moved in that direction. This allows the trolley to be moved to the washing area with minimal changes in direction.

In addition, when pushing the tube bundle into the shell, the widthwise position of the tube bundle is adjusted and centered using the support means of the slider in the last row, in the same way as when pulling out the tube bundle, and
Each slider is supported by the supporting means and placed on a cart, and the cart is placed along the extension line of the shell, and the driving means is driven in the pushing direction to move it until it reaches the front end of the shell. By sequentially removing the slider supports, the tube bundle can be accurately pushed into the shell without misalignment.

Embodiment] Hereinafter, an embodiment of a device for pulling out and pushing a tube bundle in a horizontal multi-tubular heat exchanger according to the present invention will be described with reference to FIGS. 1 to 4.

First, the schematic structure will be explained with reference to FIG. 1 and FIG. .11..., and supports the trolley body lO on the ground near the wheels 11.11 and between the wheels 11.11, and supports the trolley body lO on the ground.
6 outriggers (elevating means) to adjust the height of
12, 12... and a stay (fixing means) 13 for fixing one side of the truck body IO to the support leg A' of the heat exchanger.

Two rails l Oa and 10a are laid along the longitudinal direction on the upper surface of the bogie main body IO,
On the rail I Oa, 10a, three sliders l 3
a , l 3b , and l 3c are arranged to extend in the width direction of the truck body IO and to be movable in the longitudinal direction thereof.

On the other hand, a disk-shaped connector 14 fixed with bolts or the like is attached to the front surface of a tube sheet C at the front end of the tube bundle B.

At the front of the connector 14 are attached four pulleys 14a to 14d, on which wires 35 are hung for pulling when pulling out or pushing in.

The front row slider 13a and the remaining sliders 13b and 13c respectively support the tube sheet C or baffle plate D at their lower ends in a height-adjustable manner, and hold the tube sheet C or baffle plate D from both sides. Support jigs (supporting means) 15 for supporting the lower edge of the baffle plate D at approximately three points are arranged respectively, and the sliders 13a in the front row and the rear row
, 13c has a width direction position adjustment means 23 (see FIG. 5) for forcibly adjusting its width direction position.
exists.

Further, reference numeral 16 denotes a winder (driving means) for winding up the wire 35 that is hung on the connector I4 attached to the slider 13a.

Reference numeral 17 denotes a chain block driven by power or manually for lifting the end plate (cover) of the heat exchanger when the end plate is removed.

An example part of the truck body lO includes operation of the wheels 11,
Operating consoles 18a, 18b, 18c, and 18d are provided for operating the support jig 15 and driving the trolley 10, respectively (see FIG. 2).

Next, to explain the details of each of the above parts, the wheel II is as follows:
As shown in FIG. 2, it is rotatably attached to the lower surface of the truck body 10. That is, a heald or chain lla is hooked between the rotating shaft and a gear hook llb disposed near the center of the lower surface, and the gear of the gear hook llb is connected to the operating part 11c provided on the operating table 18a (+8d). The direction of the wheel 11 can be changed to any desired direction by operating the wheel 11, and the direction can be fixed either parallel to the trolley body IO or perpendicular to the trolley body IO. ing.

The outrigger 12 has hollow prismatic columns 12b that stand vertically on both sides of the horizontal member 12a that extends in the width direction of the lower surface of the truck main body IO and protrudes on both sides without contacting the ground. As shown in FIG. 1, a support +2c is built into the column 12b so as to be movable up and down.

These supports 12c are arranged in pairs with hydraulic units 20 (shown only in the center of FIG. 1,
(not shown in FIG. 2) so as to move up and down synchronously.

Further, abutting bodies 12d are attached to the lower ends of the supports 12c, respectively, so as to be able to swing freely so as to hold the truck main body 1O horizontally even on an inclined ground.

Next, as shown in FIG.
In 3c, the trapezoidal) side plate 21 is lit, and the side plate 21
Two wheels 22 and 22 are attached to each of the rails 22 and 22, and the rails are configured to be movable along the longitudinal direction of the rail IOa.

A substrate 24 having a U-shaped cross section is attached between the side plates 21 and 21 so as to extend in the width direction of the truck main body IO, as shown in FIG. 1
Rectangular elongated holes 24a and 24b (see FIG. 3) are formed in which the supports 15a and 5b of No. 5 are movably fitted.

As shown in FIG. 3, each slider 13a to +3
A shaft 25 is rotatably attached near the top between each of the side plates 21 and 21 of c. Female screws 25a and 25b are respectively formed.

The supports 15a and 15b on both sides of the support jig 15 are screwed into the male screws 25a and 25b of the shaft 25,
The tube plate C is provided so as to be able to approach and separate freely so as to hold the baffle plate, and the base plate 24 is provided with a support 15c that supports the lower end of the tube plate C or L block.
are attached in a height-adjustable manner, and these supports 15a
-15c constitutes the support jig 15.

That is, the supports 15a and I5b are connected to the male screw 25a of the shaft 25, as shown in FIGS. 3 and 4.
(25b) and fitted into the elongated hole 24a (24b), and a slider 13b (13a, 13c) rotatably attached to the lower end of the main body 26.
) consists of a wheel portion 27 that slides on the back surface of the base plate 24, a support wheel holder 28 formed to protrude from the upper part of the main body 26, and a support wheel 29 rotatably attached to the support wheel holder 28. has been done.

The support body 15c is provided with a support rod 31 that is screwed into a female screw portion 30 embedded in the base plate 24 so as to be movable up and down, and a branch portion 32 that branches into two is provided on the upper part of the support rod 31. The supporting wheels 33a and 33bh are rotatably attached to the upper ends of the branch portions 32, respectively.

As shown in FIG. 5, the widthwise position adjustment means for the sliders 13a13c in the frontmost row and the rearmost row are arranged by means of a shaft 37 for position adjustment or a side plate 21 parallel to the surface shaft 25.
The two shafts 25 and 37 are screwed onto the female threaded portion 21a and can be adjusted in position in the longitudinal direction. They are connected via a connecting member 39 that passes through them.

That is, the navigation connecting member 39 is formed into a single-double cylindrical shape by connecting two large and small cylindrical members together at one periphery, one of which is connected to the shaft 37 and the other to the shaft 25, each of which has a thrust bearing. It is made to penetrate and is connected via 38a and 38b.

Note that the other slider 13b is not provided with the inscription width direction position adjustment means 23, and the vicinity of both ends of the noyaft 25 is arranged on the side plates 21 and 21 so that it can move freely by a predetermined length in the width direction. is supported by

The winding machine 16 is composed of a two-stage tram 16a and a motor section +6b for rotating and sorting the drum. Also,
At the rear of this winding machine 16, five pulleys 35a to 35 are installed.
e is provided and when the tube bundle B is to be bowed, one end of the wire 35 is connected to the drum 16a as shown by the solid line on the left in FIG.
the wire 35 is wrapped around the pulleys 35c and 35d,
It is applied to the pulley 35e via the pulley 14c of the connector 14 attached to the tube plate C, and then the pulley 14 of the connector 14 is
The other end is wound around the drum 16a by hooking it onto the pulleys 35a and 35b on the winding machine 16 side via the tube b, and by winding and driving the drum 16a, the tube bundle B is driven in the drawing direction via the connector 14. I am now able to do some things.

Also, two pulleys 36a and 3 are installed at the rear end of the trolley IO.
6b is attached, and when pushing the tube bundle B,
As shown by the dashed dotted line on the right side of FIG.
c, 35d, and then the pulleys 14a to +4cl of the connector 14 via the pulley 36a at the rear end of the truck 10, and then to the pulley 35a35b at the rear of the winder 16 via the pulley 36b, and then to the drum +6a. Winding, drum I6
By winding and driving tube bundle B to connecting tool 14
It is designed to be driven in the direction of pushing through.

The stay 13 is configured to protrude from the rear end of the truck body 10 after positioning the truck body 10, and connect its end to the support leg A' with a connecting means such as a bolt to fix the position of the truck body IO. It has become.

According to the tube bundle pull-out and push-in device in the horizontal multi-tube heat exchanger configured as described above, first, the support body 12C (see Fig. 1) of the outrigger I2, which is the elevating means, is retracted and the trolley is moved. While moving lO to the front of shell A,
While changing the direction of the wheel 11.11., the direction is adjusted so that it is approximately on the extension line of the shell A, and the direction relative to the shell A is determined. At this time, as shown in FIG. 1, the rear end of the truck 10 is positioned so as to fit slightly under the shell A.

Then, the outrigger I2 is driven by the hydraulic unit 20 to extend its support body 12c, and while the truck body 10 is held horizontally, the abutment body 12d is grounded to prevent the truck 10 from swinging to the left or right. The position is fixed and the trolley IO is raised to a position corresponding to the height of the shell A.

Next, the stay 13 is connected to the support leg A′ of the heat exchanger,
Completely position the trolley body IO.

Then, the cover at one end of the shell A is removed using the chain block 17.

In addition, all sliders 13a I 3b , I 3
Move c to the edge of shell A.

At this time, the support jig I5 for the sliders 13a-13c is
The central support body 15c is lowered lower than the shell A and is retracted, and the support bodies 15a and 15b on both sides are moved and retracted so as to be separated from each other.

In addition, a connecting tool 14 is attached to the tube plate C, and this connecting tool I4
A wire 35 is hung on the wire 35 as shown by the solid line on the left side of FIG.

Then, the wire 35 is wound up by the winding machine 16,
Pull the tube plate C in the pulling direction and pull out the tube bundle B by approximately 60 cm. Slider 13 in the front row at this position
A is moved below the tube sheet C, the tube sheet C is supported by the support jig 15, and the centering process is performed.

That is, the lower end of the tube plate C is raised and supported so as to come into contact with the central support member +5c, and the support members 15a and 1 on both sides
5b are brought close to support the tube sheet C from both sides so as to support the lower end periphery of the tube sheet C at approximately three points. At this time, the shaft 37 is moved by the width direction position adjustment means 23 to adjust the width direction of the shaft 25, and the support body 15a, ! 5b while keeping the distance between them constant, that is, while holding the tube bundle C,
Accurately center the tube bundle C against the shell A.

Then, the winding machine 16 is driven again to wind up the wire 35, and the wire 35 is pulled out of the shell A from the second part where the baffle is provided (the third baffle plate D in FIG. 1). Then, the next slider 13b is placed below the baffle plate, the support jig 15 supports the baffle plate at approximately three points in the same way as the tube plate C, and the winder 16 is driven again. When the specified extraction is completed, move the baffle plate near the rear part to the rearmost slider +
After supporting the tube bundle B at three points with the support body 15 of 3c, it is pulled out again and the entire tube bundle B is pulled out.

In this way, by aligning the core with the support means 15 of the slider 13a in the front row and pulling out while supporting the tube bundle B at multiple locations along the longitudinal direction, a smooth flow without misalignment can be achieved. You can make withdrawals.

Next, the truck body 10 releases the fixation of the stay 13 with the tube bundle B placed thereon, and the wheels 11.
1, for example, in a direction perpendicular to the shell A, and then drive the outrigger 2 to lower it.

When the wheels 11.11 touch the ground, the wheels 11.11...
Since it faces perpendicularly to shell A, it can proceed along the passage as it is, minimizing the change of direction of trolley IO and moving trolley 0 to the washing area. Ru.

Next, when pushing in, move the trolley IO to the installation location of shell A with the tube bundle B supported by the above-mentioned hinges, and set the position to shell A while adjusting the direction with wheels 11 and 11. , the height is adjusted by the outrigger 12, the trolley IO is placed easily on the shell A, and the stay 13 is
The trolley body 10 is fixed to the shell A by.

After the support means 15 of the slider 13c in the last row is used to accurately prepare the core base, the tube bundle B is pushed in.

That is, by hanging the wire 35 in the state shown by the dashed-dotted line on the right side of FIG. 2 and driving the winder 16 to wind it, the tube sheet B is pushed by the wire 35, and the sliders 13a, l 3b, I3c moves in the pushing direction while supporting the baffle plate.

Then, the slider 13c has reached the front end of the shell A,
By sequentially removing the supports l 3b and l 3a, the tube bundle B can be accurately pushed into the shell A without misalignment.

Finally, the connector 14 is released and the cover is attached to complete the insertion of the tube bundle B.

According to the tube bundle pulling out and pushing device in the horizontal multi-tube heat exchanger according to the above embodiment, the wheels 1 of the trolley IO
1.11 is provided so that it can be changed in any direction, so by adjusting the direction and moving it, it is possible to accurately position it on the extension line of the heat exchanger, and also to change the direction of change after pulling out. can be carried out to a minimum, and the work can be carried out efficiently.

And a trolley! 0 can be raised and lowered to any desired height by the outrigger 12, and after positioning the trolley, it is fixed to the heat exchanger leg A' by the stay 13, making it easier to cut out or insert the tube bundle B. Sometimes, it is possible to hold the trolley body IO at an arbitrary height and fix it so that it does not move.During the work, it is possible to prevent the trolley body IO from swinging due to the load of the tube bundle B, and to ensure a smooth pull-out operation. It is possible to perform push-in work.

In addition, in the above-mentioned embodiment, the traveling direction of each wheel 11° 11 may be changed individually, or may be changed by connecting them to each other. It is only necessary that the directions of all the wheels 11, 11, and 11 are always parallel to each other, and that f2 are on the same line, and the structure for attaching the wheels 11, 11, . . . to the truck body lO becomes extremely simple. Further, the turning light among these wheels may be made to be able to rotate by power.

In addition, three supports 15a are attached to the lower end periphery of the tube plate C or the baffle plate at approximately three points on the plurality of sliders l3a, 13b, I3c that are movable along the longitudinal direction of the truck lO.
15b, 15c are provided, and their positioning is achieved by raising the center support 15c so that it comes into contact with the lower end of the tube plate C2 and the baffle plate, and supporting members 15a on both sides.
15b is held close to the tube plate C or the baffle 1iD, so it is easy to center the tube bundle B to the shell A, and the baffle plate does not get caught on the inner wall of the shell A when it is inserted. Since no extra force is applied, accidents such as breakage are unlikely to occur, and as mentioned above, the supporting work is simple and can be done easily and in a short time even by an unskilled person.

Since the support members 15a and 15b on both sides support the cart by hugging it from both sides, the cart body 10 does not roll off, making it safe.

In this way, there is no risk of contacting or damaging equipment during operation or overturning the vehicle, so by having appropriate explosion-proof equipment specifications, it can be used even within the plant area during operation.

In addition, in the above embodiment, the support column 1 of the outrigger 12
2c is moved up and down to raise and lower the truck main body IO, but the structure may be such that the outrigger 12 is simply grounded and fixed, and the truck 10 itself is moved up and down relative to the support column.

Further, in the above embodiment, the driving means was constructed by the winding machine 16 and the wire 35, but it may be constructed by other driving means such as a power source or a connecting means.

[Effects of the Invention] As explained above, the drawing and pushing device for a shell-and-tube heat exchanger according to the present invention can provide the following effects.

■The front slider of the plurality of sliders that can float along the longitudinal direction of the truck is provided with support means that supports the lower edge of the tube plate and whose position in the height and width directions can be adjusted. Since the tube bundle is aligned with the shell, it is easy to align the tube bundle with the shell, and the inner wall of the shell is easily aligned when the tube bundle is pulled out or inserted. There is no galling of the baffle plate, and no extra force is applied, so accidents such as damage rarely occur.As mentioned above, the supporting work is simple, and even unskilled people can easily and quickly install it. It can be carried out.

■The wheels of the trolley are installed so that they can be fixed along the longitudinal direction of the heat exchanger, and can be changed in any direction after the tube bundle is pulled out, making it possible to accurately position the wheels with respect to the heat exchanger, and The direction of change can be minimized and work can be done efficiently.

■ Conventionally, two or three large crane trucks were used, but this device can be used to raise a small crane truck for unloading tube handles from a truck. Fewer workers are needed.

■Able to work safely and quickly in narrow spaces.

■Even if a malfunction such as a leak in the heat exchanger tube bundle occurs in an operating plant and urgent repair is required,
Can be safely repaired.

[Brief explanation of drawings]

FIG. 1 is a side view showing one embodiment of a tube bundle pulling out and pushing device in a horizontal multi-tubular heat exchanger according to the present invention;
The figure is a plan view of the same embodiment, FIG. 3 is a front view showing the support means in the same embodiment, FIG. 4 is a side view of the support means, and FIG.
The figure is a plan view showing widthwise position adjustment means for the front and rear sliders in an embodiment of the pull-out and push-in device according to the present invention, and FIG. FIG. 2 is a schematic configuration diagram for explaining a conventional technique in this case. 0. - Trolley, 11... Wheels, 2 - Outrigger (elevating means), 3 - Stay (position fixing means) 3a, I 3b, I 3c - Slider, 4 - Connector, 5 - Support jig, 5a, 15b, +5cm... Support body, 6... Winder (driving means), 3... Width direction position adjustment means.

Claims (1)

[Scope of Claims] A tube bundle constituted by a plurality of heat exchanger tubes, each of which has one end penetrating a tube sheet and a middle portion penetrating a plurality of baffle plates, is inserted into a cylindrical shell in its longitudinal direction. In a device for pulling out and pushing in a tube bundle in a horizontal multi-tubular heat exchanger, the position of the truck body is controlled when pulling out and pushing the tube bundle along a trolley body having a plurality of wheels whose direction can be changed. A position fixing means for fixing the trolley to the heat exchanger is provided, and a lifting means is provided for raising and lowering the trolley body to adjust its height position before the position fixing means fixes the position of the trolley. , A plurality of sliders are provided on the upper surface of the truck, extending across the width direction of the truck body and movable along the longitudinal direction thereof, and these sliders are provided with a plurality of sliders that extend across the width direction of the truck body and are movable along the longitudinal direction. A support means is provided to support the lower edge of the plate or the baffle plate in a height-adjustable manner, and the support means for the sliders in the front row and the rear row among these sliders are adjustable in width direction to adjust their width direction positions. The horizontal multi-tube type is characterized in that the truck body is further provided with a drive means for connecting to the connector attached to the tube plate and driving the tube bundle to be pulled out and pushed in. A device for pulling out and pushing tube bundles in heat exchangers.