CN2103408U

CN2103408U - Wire rope guiding device for detaching and assembling pipe bundle of heat exchanger

Info

Publication number: CN2103408U
Application number: CN 91211211
Authority: CN
Inventors: 赵衍申; 李献东
Original assignee: SHENGLI OIL REFINERY QILU PETR
Current assignee: SHENGLI OIL REFINERY QILU PETR
Priority date: 1991-02-01
Filing date: 1991-02-01
Publication date: 1992-05-06

Abstract

The utility model relates to a wire rope guiding device for detaching and assembling the pipe bundle of an array pipe type heat exchanger, which can cause the wire rope passing by the end surface of the pipe bundle to be fixed on the required direction, causing the direct slide contact between the wire rope and the end surface of the pipe bundle of the heat exchanger to be changed into indirect contact, and eliminating deflecting torque or twisting deviation caused by inhomogeneous pressure provided by the wire rope to the pipe bundle. The utility model is provided with a pulley wheel installed on a flat plate-shaped base, the pulley wheel is supported on a pulley wheel clamping plate and a pulley wheel shaft, and a rope blocking plate is arranged at the end of the pulley wheel clamping plate. The utility model is fixed on the end face of the pipe bundle by a positioning pin through a positioning pin hole and the pipe hole of the pipe bundle when working.

Description

Wire rope guiding device for detaching and assembling pipe bundle of heat exchanger

Invention field and title the invention belongs to operation field of tool by hand, are a kind ofly to be used for tubular heat exchanger tube bank and to take out the steel wire rope guider of pretending industry.

The technical background of invention in oil plant and chemical plant, heat exchanger be a kind of use equipment very widely, and wherein the most frequently used be tubular heat exchanger.In overhaul of the equipments, heat exchanger tube take out dress, be the work that often runs into.The extraction and the filling of tube bank can be adopted diverse ways by its residing operating condition.

A kind of method is to use tube bundle extracting machine.This tube bundle extracting machine is to drive the rolling sport car with leading screw, will restrain extraction or packs into.This device structure complexity, the cost height, operation is difficult and operating speed is slow, is applicable to that generally the operation place is narrow, is difficult for being provided with the occasion of anchor point.

Another kind method is to insert two one ends screw thread is arranged in the hole of tube bank, and an end has the garden steel that hangs nose, at the end of thread nut of screwing on, hangs nose with hoist engine by rope traction then, and tube bank is released.

Also have plenty of to give to restrain earlier to eject more than the 60MM in the housing and (be as the criterion), be pulled outwardly with hoist engine, steel wire rope then can fasten steel wire rope.

When filling tube bank in housing, also be to use hoist engine, steel wire rope is provided with anchor point, hangs up leading block.Earlier will restrain an end and penetrate housing, steel wire rope will longitudinally be walked around tube bank one end, and start hoist engine, haulage cable, to the pressure of restraining end face tube bank pushed away firmly in housing by steel wire rope with lifting appliance.Too fast for preventing that steel wire rope from damaging, between steel wire rope and tube bank end face, fill in a lumps of wood.Steel wire rope is positioned on the arc of garden with two contact points of tube bank end face, easily slippage.The lumps of wood of filling in, fixing because of being difficult for, also fall down easily and hurt sb.'s feelings.The tube sheet of tube bank is easy to damage with the direct sliding-contact of steel wire rope.Steel wire rope causes deflection torque or torsional deflection to tube bank pressure inequality.In order to restrain the convenience of taking out dress and to guarantee safety, just must solve the fixation problem of steel wire rope on the tube bank end face.

Purpose of the present invention, just provide a kind of instrument, this instrument has a pulley, the steel wire rope of walking around the tube bank end face is fixed on the direction that requires, make the direct sliding-contact between steel wire rope and the heat exchanger tube end face change into mediate contact, and can eliminate deflection torque or torsional deflection that steel wire rope causes the pressure inequality of restraining.Make heat exchanger tube take out when dress laborsaving, save time, improve work quality, and can guarantee the security of operation.

The invention be described in detail the invention provides a kind of be used for heat exchanger tube take out pretend the industry the steel wire rope guider, as shown in Figure 1, it has a rectangle base ［ 1 ］, be to make, at an end of base ［ 1 ］, by two pulley clamping plate ［ 3 ］ with steel plate, pulley spindle ［ 6 ］ and four clamp nuts ［ 7 ］, supporting and can go up the pulley ［ 4 ］ that rotates at pulley spindle ［ 6 ］, there is the garden arc groove pulley outer, to hold steel wire rope.In order to increase pulley clamping plate ［ 3 ］ rigidity,, a reinforcement ［ 2 ］ is arranged respectively in the outside of two pulley clamping plate.At the other end of base, be drilled with the locating hole ［ 8 ］ that can insert alignment pin ［ 9 ］.The heat exchanger of various models, pore size arrangement mode is inequality, at least two holes being arranged by them, alignment pin is inserted pore, and the most a lot of brills of dowel hole are several, in the present invention, the number of dowel hole is 8--9, and the aperture is 1/10 for the 12mm--16mm tapering.In order to make the unlikely slippage of steel wire rope, keep better guide effect, in the end of two pulley clamping plate a rope blocking plate ［ 5 ］ is arranged respectively, rope blocking plate can be made into integration with the pulley clamping plate.At an end of base, there is half garden v notch v in the place of close pulley, is to pass through from this breach for the steel wire rope of walking around pulley.The face of sitting down the end of at, the end near pulley has a backing plate ［ 10 ］, is for the recess with the tube sheet outer ring matches, and protects tube sheet and pore when pretending industry as far as possible taking out.This pad is to make with nonmetallic materials such as hard rubber or plastics, and thick 5-6mm is fixed on base lower surface with at least two countersink head screws.

Each part of steel wire rope guider except that backing plate, is mild steel and makes, base size 220 * 180 * 16mm, pulley clamping plate, rope blocking plate, the material of reinforcement is the steel plate of thickness 10mm, and diameter of pulley is 100mm, thickness 30mm, the pulley spindle diameter is 25mm, length 150mm, the pulley cleat heights is 200mm, the pulley clamping plate, reinforcement all is welded on the base with melting welding, and pulley spindle is clamped on the support that the pulley clamping plate form by four clamp nuts (two at an end).

The using method of steel wire rope guider is as follows: finish will pack tube bank into housing the time in maintenance, to restrain earlier and use crane, lifting rope is sling, one end is inserted housing one segment length, press then shown in the accompanying drawing 2, two guiders ［ 2 ］ are fixed on the end face of tube bank ［ 3 ］ with alignment pin, near the left and right edges place, steel wire rope ［ 9 ］ is penetrated guider, by the groove of guider pulley.Turn back backward in the steel wire rope two ends, an end be attached at steel wire rope stiff end ［ 4 ］, an end by leading block ［ 10 ］, go out door guide roller ［ 6 ］, be connected to hoist engine ［ 7 ］.At this moment to anchor point (as ［ 5 ］ and ［ 8 ］) be set by site specific.Start hoist engine,,, firmly tube bank is shifted onto housing ［ 1 ］ the inside and gone by guider by pull of steel wire.

Take out also available top said method outward if will restrain from the housing face.Because when tube bank was contained in the housing the inside, an end grew a segment length, utilizes this segment length, loads onto guider by said procedure, will restrain and release one section.Inserting an end then in pore has screw thread, and an end has the round steel that hangs nose.In hanging nose, penetrate steel wire rope, tube bank is pulled out with hoist engine.

Owing to used the steel wire rope guider, being equivalent to tube bank itself is exactly pulley, steel wire rope has become rolling with the sliding-contact of tube bank end face and has contacted, make full use of the tractive force of hoist engine, stressed even when taking out the tubulature bundle, accelerated speed and quality that dress is taken out in tube bank, guider pulley outside has installed rope blocking plate additional, and steel wire rope can slippage.Do not need between tube bank end face and steel wire rope, to fill in the lumps of wood, alleviated labour intensity, improved security.Because at this moment tube bank only bears the normal pressure that the end is come; can utilize the position of lifting rope and guider will restrain centering at the very start, reduce torsional deflection in the filling process, owing to be to contact with tube bank by guider; avoid the abrasion of steel wire rope and tube sheet, protected tube bank.When adjacent many heat exchanger tubes need be concentrated filling, can only hang once (two) guider pulley, thereby alleviate labour intensity.

Claims

1, a kind ofly is used for the steel wire rope guider that heat exchanger tube is taken out dress, it is characterized in that: 1. it has a base, being installed with one at an end of base is supporting with two pulley clamping plate and pulley spindle, the pulley that is slidingly matched with pulley spindle that there is a deep-slotted chip breaker outer; 2. respectively there are two clamp nuts at the pulley spindle two ends, are fixed in the hole of pulley clamping plate; 3. at the other end of base, bore 8-10 the hole that can insert alignment pin; 4. respectively there is inwardly a turn back rope blocking plate of 90 ° two pulley clamping plate ends; 5. in the base end of between two pulley clamping plate, locating, an arc notch is arranged; 6. near pulley one end a backing plate that matches with tube sheet outer ring recess is housed in base lower surface; 7. respectively there is a reinforcement in the two pulley clamping plate outside.

2, by the described steel wire rope guider of claim 1, it is characterized in that base, pulley, pulley spindle, clamp nut, pulley clamping plate, rope blocking plate and reinforcement are made by common low charcoal steel.

3, by the described steel wire rope guider of claim 1, it is characterized in that the pulley clamping plate, reinforcement all is welded on the base with melting welding.

4,, it is characterized in that backing plate makes with nonmetal by the described steel wire rope guider of claim 1.

5, by claim 1 or 4 described steel wire rope guiders, the material that it is characterized in that backing plate is an ebonite board.

6, by claim 1 or 4 described steel wire rope guiders, the material that it is characterized in that backing plate is plastics.

7, by claim 1 or 4 described steel wire rope guiders, it is characterized in that backing plate is contained in base lower surface with countersink head screw.

8,, it is characterized in that the countersink head screw that backing plate is used is at least two by claim 1, the 4 or 7 steel wire rope guiders of being stated.