CN205603125U - Special hoist device that horizontal water tube cooler heat exchange tube was changed - Google Patents

Abstract

A special hoisting device for replacing heat exchange tubes of a horizontal tube cooler, including a gabled mast, two mast rotation supports and a winch, characterized in that: the gabled mast is two mast columns, and the two masts rotate The supports (9) each include a support bottom plate (91) and two vertical plates (92) with through holes (93) in the center, wherein: two mast rotating supports (9) are welded on the top of the horizontal tube cooler tower On the edge, a chain block (8) is provided between the lifting lug (11) on the top and the first lug of the herringbone mast, and the winch (4) is set on the ground; a lifting pulley is set, and the hoist wire rope passes through 3 hoists The heavy pulley is finally connected with the hoisting wire rope group to achieve a special hoisting device for replacing the heat exchange tube of the horizontal tube cooler. The utility model has the advantages of simple structure of the hoisting device, convenient manufacture, solving the shortcomings of the traditional horizontal tube cooler heat exchange tube replacement and hoisting method, saving costs, and improving the safety of the heat exchange tube hoisting.

Description

Special hoisting device for replacing heat exchange tubes of horizontal tube cooler

technical field

The utility model relates to a hoisting device, in particular to a special hoisting device for replacing heat exchange tubes of a horizontal tube cooler.

Background technique

The horizontal tube cooler is the main equipment in the gas purification area of the coking plant. It is used for cooling the gas. After a certain period of operation, the internal heat exchange tube needs to be replaced. The quantity is large (generally thousands of pieces), the location is high, and the operating space is small (the erected scaffolding affects the hoisting). This hoisting method is not economical and safe.

Therefore, there are above-mentioned various inconveniences and problems in the known mode of using a car crane to hoist the heat exchange tubes.

Contents of the invention

The purpose of this utility model is to propose a safe and reliable special hoisting device for replacing the heat exchange tubes of the horizontal tube cooler which solves the deficiency of the traditional horizontal tube cooler heat exchange tube replacement hoisting method.

For achieving the above object, the technical solution of the utility model is:

A special hoisting device for replacing the heat exchange tubes of a horizontal tube cooler. A platform for dismantling each layer of heat exchange tubes is set up on the side edge of the horizontal tube cooler, and a special hoisting device is set on the top of the horizontal tube cooler, including a herringbone mast, two Mast swivel support and hoist, characterized by:

The herringbone mast is composed of two mast columns in a herringbone shape. The mast columns are steel pipes. The top of the herringbone mast is equipped with a first lifting lug and a second lifting lug, the middle is equipped with a third lifting lug, and the two bottom ends are respectively equipped with rotating An ear seat, a rotating ear seat hole is arranged in the rotating ear seat;

The two mast rotating supports each include a support bottom plate and two vertical plates with through holes in the center, and the two vertical plates are parallel to each other with a certain interval; the two vertical plates are welded and fixed to the support bottom plate vertically; the two vertical plates Each of the two vertical plates of a mast rotating support accommodates a rotating ear seat of a herringbone mast, and a pin shaft is used to connect the hole of the rotating ear seat and the through hole of the vertical plate;

Among them: two mast rotating bearings are welded on the edge of the top of the cross-tube cooler tower, and a chain hoist is set between the lifting lug on the top of the cross-tube cooler and the first lug of the herringbone mast to control the pitch angle of the herringbone mast a;

The hoist is set on the ground; lifting pulleys are set, the first lifting pulley is connected with the second lifting lug with a steel wire rope, the second lifting pulley is connected with the third lifting lug at the middle of the mast column with a steel wire rope, and the third lifting pulley Set at the bottom of the horizontal tube cooler; the wire rope of the hoist turns upwards along the horizontal tube cooler through the third lifting pulley, turns upwards along the mast column through the second lifting pulley, turns vertically downward through the counterweight through the first lifting pulley , and finally connected with the hoisting steel wire rope group, which is used for binding and lifting the heat exchange tubes to achieve a special hoisting device for replacing the heat exchange tubes of the horizontal tube cooler.

The special hoisting device for replacing the heat exchange tubes of the horizontal tube cooler of the present invention can also be further realized by adopting the following technical measures.

The above-mentioned special hoisting device for replacing the heat exchange tubes of the cross tube cooler, wherein two parallel first struts and second struts are arranged between the two mast columns, and the distance between the first strut and the second strut is There is a certain interval, and diagonal braces are set in the interval to improve the strength of the gable mast.

In the special hoisting device for replacing the heat exchange tubes of the horizontal tube cooler, the first lifting lug and the second lifting lug are correspondingly and fixedly arranged on both sides of the gable mast.

The above-mentioned special hoisting device for replacing the heat exchange tubes of the horizontal tube cooler, wherein the specifications of the chain block must be able to bear the hoisting weight of the mast, the lifting capacity of the hoist must be able to bear the weight of the heat exchange tubes that are expected to be hoisted, and the structural strength of the herringbone mast must be To meet the hoisting bearing capacity requirements, the pitch angle of the gable mast must ensure that the protruding distance of the gable mast can exceed the heat exchange tube removal platform.

After adopting the above technical scheme, the special hoisting device for replacing the heat exchange tube of the horizontal tube cooler of the utility model has the following advantages:

1. The special hoisting device has a simple structure and is easy to manufacture;

2. The special hoisting device is easy and quick to install, the hoisting method is simple and practical, and the operability is strong. It is suitable for the replacement and hoisting of the heat exchange tubes of the horizontal tube coolers of various heights, sizes and working conditions, and can solve the problem of heat exchange tubes of traditional horizontal tube coolers. Replace the shortcomings of the hoisting method, save the cost of the heat exchange tube hoisting machinery, and improve the safety of the heat exchange tube hoisting;

3. The production cost of the special hoisting device is low, which reduces the cost of the replacement and overhaul project of the heat exchange tube of the horizontal tube cooler.

Description of drawings

Fig. 1 is the structural representation of the herringbone mast of the utility model embodiment;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is a schematic diagram of the structure of the mast rotating support of the utility model embodiment;

Fig. 4 is the side view of Fig. 3;

Fig. 5 is a schematic diagram of the pin shaft structure of the utility model embodiment;

Fig. 6 is a structural schematic diagram of a special hoisting device for replacing heat exchange tubes of a horizontal tube cooler according to an embodiment of the present invention;

Fig. 7 is a schematic diagram of the usage state of the special hoisting device for replacing the heat exchange tubes of the horizontal tube cooler according to the embodiment of the present invention.

In the figure: 1 the 1st hoisting pulley, 2 the 2nd hoisting pulley, 3 the 3rd hoisting pulley, 4 hoist, 5 counterweight, 6 hoisting wire rope group, 7 herringbone mast, 71 mast column, 72 the first strut , 73 No. 2 brace, 74 Diagonal brace, 75 No. 1 lug, 76 No. 2 lug, 77 No. 3 lug, 78 Rotating ear seat, 79 Rotating ear seat hole, 8 Chain hoist, 9 Mast rotating support Seat, 91 support base plates, 92 vertical plates, 93 through holes, 10 pin shafts, 11 lifting lugs, 12 heat exchange tubes, and 13 horizontal tube coolers.

detailed description

Below in conjunction with embodiment and accompanying drawing thereof, the utility model is described further.

Example 1

The special hoisting device for the replacement of the heat exchange tubes of the horizontal tube cooler of the utility model sets up a heat exchange tube removal platform (not shown in the figure) on the side edge of the horizontal tube cooler, and sets lifting lugs on the top of the horizontal tube cooler, including T-mast, two mast swivels and hoist.

Please refer to Fig. 1 and Fig. 2 now. Fig. 1 is a schematic diagram of the structure of a herringbone mast according to an embodiment of the present invention, and Fig. 2 is a side view of Fig. 1 . As shown in the figure, the herringbone mast 7 is formed in a herringbone shape by two mast columns 71, the mast columns are steel pipes, the top of which is provided with a first lug 75 and a second lug 76, and the middle is provided with a third lug 77 , the two bottom ends are respectively provided with a rotating ear seat 78, and the rotating ear seat is provided with a rotating ear seat hole 79; two parallel first struts 72 and the second strut 73 are arranged between the two mast columns, and the first There is a certain interval between the strut and the second strut, and a diagonal strut 74 is set in the interval to improve the strength of the chevron mast. The first lifting lug (75) and the first lifting lug (76) are correspondingly and fixedly arranged on both sides of the gable mast.

Fig. 3 is a schematic diagram of the structure of the mast rotating support of the embodiment of the utility model, Fig. 4 is a side view of Fig. 3, and Fig. 5 is a schematic diagram of the structure of the pin shaft of the embodiment of the utility model. The two mast swivel supports 9 each include a support base plate 91 and two vertical plates 92 with through holes 93 in the center, and the two vertical plates are parallel to each other with a certain interval; the two vertical plates are vertically welded and fixed on the support base plate In the middle of the two vertical plates of the two mast rotating bearings 9, each accommodates a rotating ear seat 78 of a herringbone mast, and connects the through hole 93 of the rotating ear seat hole 79 and the vertical plate 92 with a pin shaft;

Among them: two mast swivel supports 9 are welded on the edge of the top of the horizontal tube cooler tower, and a chain hoist 8 is provided between the lifting lug 11 on the top of the horizontal tube cooler and the first lifting lug 75 of the herringbone mast to control the herringbone The pitch angle of the mast; the specification of the chain hoist must be able to bear the lifting weight of the mast; The angle should ensure that the protruding distance of the gable mast can exceed the heat exchange tube removal platform.

The hoist 4 is set on the ground; a lifting pulley is set, the first lifting pulley 1 is connected with the second lifting lug 76 with a steel wire rope, and the second lifting pulley 2 is connected with the third lifting lug 77 in the middle of the mast column 71 with a steel wire rope , the third hoisting pulley 3 is set at the bottom of the cross tube cooler; the hoist wire rope passes through the third hoisting pulley 3 and turns upward along the cross tube cooler, turns upwards along the mast column 71 through the second hoisting pulley 2, and passes through the first The hoisting pulley 1 turns vertically downwards through the counterweight 5, and finally connects with the hoisting wire rope group 6. The hoisting wire rope group is used for binding and lifting the heat exchange tubes 12 to achieve a special hoisting device for replacing the heat exchange tubes of the horizontal tube cooler.

Example 2

A method for using a special hoisting device for replacing heat exchange tubes of a horizontal tube cooler, comprising the following steps:

a. Make and install the special hoisting device for replacing the heat exchange tubes of the horizontal tube cooler

The spreader is designed by referring to the lifting principle of the mast crane. The special lifting device is composed of a herringbone mast, a chain block, a support, a winch, a lifting pulley, a counterweight, and a lifting wire rope. The hoist is used as the lifting part of the special hoisting device, the mast is used as the guide support of the hoisting tool, and the pulley is used as the guide of the hoisting wire rope;

b. Install a special hoisting device at the replacement site of the heat exchange tube of the horizontal tube cooler

The herringbone mast is fixed on the top of the cross tube cooler through the two mast rotating supports made, and the pitch angle a of the herringbone mast is adjusted by a chain hoist fixed on the lifting lug on the top of the cooler, and a winch is fixed on the ground of the construction site , the hoist wire rope is guided through a hoisting pulley installed at the bottom of the cross-tube cooler and two hoisting pulleys installed on the lugs of the gable mast, and the hoist wire rope for hoisting the heat exchange tube is guided from the ground to the top of the cross-tube cooler, and passed through The pulley on the herringbone mast guides downward, and the end of the hoist wire rope is connected to two wire rope groups, and a counterweight is hung on the upper part of the hoisting wire rope for the up and down of the wire rope when there is no load;

c. Carry out a load test to check whether the lifting performance can meet the safety requirements

Since it is a lifting device, a load test is required, and the load test is carried out in the following steps.

(1) No-load test: start the winch, and conduct 1-2 tests within the full height range of the cross tube cooler to check whether the hoisting wire rope goes up and down smoothly, whether there is any jamming, whether the brake and control system of the winch are normal.

(2) Rated load test: Lift the rated load heavy object, carry out the lifting test, check whether the gable mast is deformed, whether the hoisting object is lifted and lowered smoothly without jamming, and whether there is any abnormality in the chain hoist used to fix the mast.

(3) Static load test

The hoist lifts the rated load heavy objects, at a height of 100-200mm from the ground, gradually loads to 1.25 times the rated load, and the suspension time is not less than 10 minutes. After the load is removed, check whether the mast is deformed, and whether there is any abnormality in the fixed chain hoist. So repeated 2-3 times, still no exception.

(4) Dynamic load test

The winch lifts 1.1 times the rated load, and tests the functions of the components of the special hoisting device and the brake of the winch. The test shall not be less than 3 times. Visually check whether there is any damage to the components of the special hoisting hoisting, whether the joints are loose or damaged, and whether the operation of the winch and its control equipment is normal.

It can be used formally only after passing all the tests;

d. Official hoisting of heat exchange tubes

Control the up and down of the hoisting wire rope through the hoist, and lift to the hoisting position of each layer of the heat exchange tube of the horizontal tube cooler according to the heat exchange tube replacement process, and start hoisting the removed heat exchange tube to the ground and the new heat exchange tube to the installation position.

The utility model has substantive features and significant technical progress. The special hoisting device for replacing the heat exchange tubes of the horizontal tube cooler of the utility model can solve the shortcomings of the traditional horizontal tube cooler heat exchange tube replacement and hoisting method, saving heat exchange Reduce the cost of the tube hoisting machine shift, reduce the cost of overhaul, and improve the safety of the heat exchange tube hoisting. At the same time, the special hoisting device for the replacement of the heat exchange tubes of the horizontal tube cooler of the utility model is simple and quick to manufacture and install, with low manufacturing cost, simple and practical hoisting method, strong operability, and is suitable for horizontal tube cooling of various heights, sizes, and working conditions. The heat exchange tube of the device is replaced and hoisted.

The above embodiments are only for illustrating the utility model, rather than limiting the utility model. Those skilled in the relevant technical fields can also make various transformations or changes without departing from the spirit and scope of the utility model. Therefore, all equivalent technical solutions should also belong to the category of the present utility model, and should be defined by each claim.

Claims (3)

1. A special lifting device for replacing the heat exchange tubes of the horizontal tube cooler. A platform for dismantling each layer of the heat exchange tubes is set up on the side edge of the horizontal tube cooler (13), and a special lifting device is installed on the top of the horizontal tube cooler, including manpower Word mast, two mast swivel bearings and hoist, characterized by: The herringbone mast (7) is composed of two mast columns (71) forming a herringbone shape, the mast columns are steel pipes, the top of the herringbone mast is provided with the first lifting lug (75) and the second lifting lug (76), and the middle part is equipped with The third lifting lug (77), the two bottom ends are respectively provided with a rotating ear seat (78), and the rotating ear seat is provided with a rotating ear seat hole (79); The two mast rotation supports (9) each include a support base plate (91) and two vertical plates (92) with through holes (93) in the center, and the two vertical plates are parallel to each other at a certain interval; The plate is welded vertically to the bottom plate of the support; the middle of the two vertical plates of the two mast rotating supports (9) each accommodates a rotating lug (78) of a herringbone mast, and is connected with a pin (10) to rotate The through hole (93) of ear seat hole (79) and vertical plate (92); Among them: two mast swivel supports (9) are welded on the edge of the top of the cross tube cooler tower, and a chain hoist is set between the top of the cross tube cooler (11) and the first lug (75) of the herringbone mast (8) to control the pitching angle a of the gable mast; The hoist (4) is arranged on the ground; a lifting pulley is set, the first lifting pulley (1) is connected with the second lifting lug (76) with a wire rope, and the second lifting pulley (2) is connected with the mast column ( 71) The third lifting lug (77) in the middle is connected, and the third hoisting pulley (3) is set at the bottom of the cross tube cooler; 2 The hoisting pulley (2) turns upward along the mast column (71), turns vertically downward through the first hoisting pulley (1), passes through the counterweight (5), and finally connects with the hoisting wire rope group (6), and the hoisting wire rope group It is a special hoisting device for bundling and lifting the heat exchange tubes (12) to replace the heat exchange tubes of the horizontal tube cooler. 2. The special hoisting device for replacing the heat exchange tubes of the horizontal tube cooler according to claim 1, characterized in that, two parallel first struts (72) and second The struts (73), the first struts and the second struts are at a certain interval, and the diagonal struts (74) are set in the interval to improve the strength of the herringbone mast. 3. The special hoisting device for replacing the heat exchange tubes of the horizontal tube cooler according to claim 1, characterized in that, the first lifting lug (75) and the second lifting lug (76) are correspondingly and fixedly arranged on the herringbone sides of the mast.