CN116252123A - A method for importing internal parts of large-scale heat exchange equipment - Google Patents

Abstract

The method for introducing the internal parts of the large heat exchange equipment comprises the following steps: 1. placing and restraining the shell on the basal plane horizontally; 2. the inner piece is supported on the base surface through a first trolley and a second trolley, the first trolley is arranged at the second port of the shell adjacent to the first end part of the inner piece and is axially movably supported on the bottom surface of the inner wall of the shell, the second trolley is arranged adjacent to the second end part of the inner piece and is movably supported on the base surface outside the second port of the shell, and the moving direction of the second trolley is consistent with that of the first trolley; 3. the introduction of the inner piece is accomplished by applying a horizontal pulling force in the direction of introduction of the inner piece on the first end of the inner piece by means of a pulling mechanism located outside the first port of the housing, thereby pulling the inner piece and the first trolley towards the first port of the housing. Compared with the prior art, the crane is not required to be used for hoisting, and the risk of scraping internal parts is reduced.

Description

A method for importing internal parts of large-scale heat exchange equipment

This application is a divisional application based on the Chinese invention patent application with the application number 202210437179.1, the application date is April 18, 2022, and the invention title is "A method for introducing internal parts of large-scale heat exchange equipment".

technical field

The invention belongs to the technical field of introducing internal parts of large-scale heat exchange equipment, and in particular relates to a method for introducing internal parts of large-scale heat exchange equipment.

Background technique

Large-scale heat exchange equipment usually includes a cylindrical shell and internal parts constrained in the shell. The weight of internal parts of heat exchange equipment over 200 tons can reach more than 100 tons. During final assembly, the prefabricated internal parts must be integrated Introduce into the shell of the equipment, and the internal parts should not be in contact with the inner wall of the shell to cause scratches during the introduction process, otherwise the internal parts will be easily damaged. However, due to the large tonnage and volume of the internal parts, there is great inconvenience in the import work.

At present, the internal parts introduction technology of large-scale heat exchange equipment, such as the scheme disclosed in the invention patent application "Plate Heat Exchanger Core Assembly Pulley and Its Using Method" (application publication number CN105129615A) with the application number CN201510594433.9, has three structures: Pulley, flat plate and baffle; the flat plate is welded on the three pulleys, and the baffle is at the left and right ends of the plate; the method of use is: place the pulley at the lower port of the shell, lift the core, and place the reinforced part of one end of the core on the On the pulley, use the crane to slowly push the core body into the cylinder through the shoulder pole until it is in place, exit the pulley, and assemble the positioning plate and the positioning slide plate at the end of the core body. The use of the above assembly pulley can adjust the installation position of the core body.

Another example is the invention patent application "Large-diameter Tube Bundle Hoisting Assembly Tooling and Its Using Method" with the application publication number CN105775991A, which discloses a lifting assembly tooling whose structure includes: a tube bundle hanging plate assembly, a fixed pulley assembly, and a tube bundle tension assembly, wherein The tube bundle hanging plate assembly is composed of arc plates and lifting lugs, and the fixed pulley assembly is fixed on the foundation platform. When in use: install the tension component of the tube bundle in the middle of the front end of the tube bundle; the wire rope goes around the fixed pulley assembly, one end of which passes through the tube bundle and connects with the tension component of the tube bundle, and the other end of the wire rope is connected to another crane; the wire rope passes through the fixed pulley block Pull the tube bundle into the casing at a uniform speed in the horizontal direction. The tooling of this structure makes the speed uniform and controllable when the large-diameter tube bundle is hoisted in and out of the shell, and the operation risk is small; it is also versatile and can be applied to the assembly of tube bundles of various diameters; thus greatly improving the tube bundle assembly efficiency and reducing reduced tube bundle assembly costs.

The above scheme has the following technical problems:

1. Both need to be used with a crane, which is not conducive to open-air operation or use in places without lifting equipment; and there is shaking when the crane is lifted, and there is a risk of scratching the internal parts and the inner wall of the shell;

2. In actual working conditions, the size of the shell of the heat exchange equipment is different. When the inner diameter of the shell increases or decreases, the curvature of the inner wall of the shell will also change. It is only suitable for a certain size of heat exchanger and cannot be adjusted according to the shell size. And if the assembly block in the above application can be adjusted according to the size of the housing, it also needs to be carried out in the housing, which is inconvenient in operation.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method for introducing internal parts of large-scale heat exchange equipment that does not need to be hoisted by a crane in order to reduce the risk of internal parts scratching.

The technical solution adopted by the present invention to solve the above technical problems is: a method for introducing internal parts of large-scale heat exchange equipment. The heat exchange equipment includes a cylindrical shell and internal parts. Each end surface has a cavity with a first port and a second port, respectively, for the introduction of the inner part, and the inner part has opposite first and second ends in the direction of introduction;

It is characterized in that the import steps of internal parts are as follows:

1. Place the shell horizontally and constrain it on the base surface;

2. The inner part is supported on the base surface by the first trolley and the second trolley, and the first end of the first trolley adjacent to the inner part is arranged at the second port of the housing, and is axially movable supported on the On the bottom surface of the inner wall of the housing, the second trolley is arranged adjacent to the second end of the inner part, and is movably supported on the base surface outside the second port of the housing, and the moving direction of the second trolley is the same as that of the first trolley. moving in the same direction;

3. On the first end of the inner part, apply a horizontal pulling force along the direction of inner part introduction through the traction mechanism located outside the first port of the housing, so as to pull the inner part and the first trolley toward the housing The first port is moved to complete the introduction of the internals.

Preferably, the outer side of the first port of the housing is provided with a frame assembly connected to the housing, the traction mechanism is installed on the frame assembly and the output end extends into the housing from the first port, and is connected to the second port of the inner part. connected at one end.

In order to further reduce the risk of internal parts being scratched, preferably, the frame assembly includes:

The frame body has a passageway extending horizontally along the introduction direction of the inner parts and the inlet passes through its side wall. Horizontally extending slide rails;

The follow-up trolley is movably arranged on the above, and the follow-up trolley is provided with a supporting part;

The first end of the inner part is provided with a first support tube extending axially along the housing. In step 3, after the first support tube on which the inner part is moved extends out of the first port of the housing, The first support tube is supported on the supporting part of the above-mentioned follower trolley, and moves along the slide rail together with the follower trolley under the action of the traction mechanism until the first end of the inner part moves to the first port to complete the inner file import. In this way, the cooperation of the slide rail, the trolley and the traction mechanism can realize that the inner part can only move along its introduction direction, and there will be no shaking during the process, thereby reducing the risk of scraping between the inner part and the inner wall of the housing.

At the same time, the cooperation of the frame assembly and the traction mechanism makes the introduction work of the present application not limited by the site, and is suitable for open-air operations or occasions without lifting equipment.

In order to realize the connection between the frame body and the housing, further, a plurality of connectors are provided on the side wall where the inlet of the frame body is located, and the plurality of connectors are arranged at intervals along the circumference of the inlet, and on each connector Each has a connecting head capable of being connected to the end surface where the first port of the housing is located.

There are differences in the port sizes of different shells. In order to make the frame assembly of the present application applicable to shells of any port size, further, the frame assembly also includes a plurality of strip-shaped mounting plates. The number matches the number of the above-mentioned connecting pieces, and the multiple mounting plates are installed radially on the side wall of the frame body, and each connecting piece is mounted on a corresponding mounting plate and can move along the length direction of the mounting plate Post fixed. In this way, the positions of the connecting parts can be adjusted according to the diameter of the first port of the housing, so as to realize the connection with the housing.

Preferably, the second end of the inner part is provided with a second support tube extending axially along the housing. Before the introduction operation, the first support tube and the second support tube are supported on the base surface by their respective brackets. superior. When the introduction operation is suspended, the second support pipe can also be supported by the bracket. When the introduction operation continues, the bracket can be removed. In this way, the safety and stability of the operation can be improved.

In order to pull the inner part to move more smoothly, preferably, the traction mechanism includes a chain with one end connected to the first end of the inner part, a driving device that drives the chain to move in the direction of introducing the inner part, and a lock that can prevent the chain from moving in the opposite direction stop structure.

More preferably, the driving device includes a hook and a driver for driving the hook to reciprocate along the inner part introduction direction, wherein one end of the hook is a hook structure adapted to the chain, and the hook of the hook is The other end is connected to the output end of the driver, and when the output end of the driver moves toward the direction of introducing the inner parts, one end of the hook hooks into the chain and pulls the chain to move along the direction of introducing the inner parts; When the output end of the driver is moving in the opposite direction to the introduction of the inner parts, one end of the hook is separated from the chain and moves along the length of the chain in the opposite direction to the introduction of the inner parts;

The locking structure includes a ratchet and a pawl cooperating with the ratchet, the ratchet is in driving connection with the chain, and the ratchet is rotatably connected to a position close to the ratchet on the frame assembly.

In the above solution, in order to make the first trolley suitable for housings of different sizes, preferably, the first trolley includes a frame and wheels, wherein the top of the frame is provided with a support for supporting the inner parts; the The bottom of the vehicle frame is provided with two wheel frames arranged at intervals along the first direction horizontal and perpendicular to the axial direction of the housing. The wheels have two groups and are respectively rotatably constrained on the bottom of the corresponding wheel frames. so that the first trolley can move axially along the casing; the tops of the two wheel frames can be relatively rotatably constrained on the frame, so that the two groups of wheels can approach or move away from each other in the first direction. In this way, the angle between the two wheel frames can be adjusted according to the inner diameter of the casing, so that the wheels on the two wheel frames can approach or move away from each other, so as to be stably supported on the inner wall of the casing, so that the The application can be applied to shells with different inner diameters.

In order to be able to adjust the first trolley outside the casing, preferably, a debugging platform is provided beside the second port of the casing, the debugging platform is supported on the base surface, and includes a base, the The top surface of the base is provided with a first adjusting plate and a second adjusting plate which are arranged side by side along the above-mentioned first direction with the plate facing upwards and engaged with the inner wall of the housing, and the first adjusting plate has an angle opposite to the second adjusting plate. The first side of the second adjustment plate has a second side opposite to the first side, the first adjustment plate can be rotated around its first side up and down on the top surface of the base, the second adjustment plate It can be constrained on the top surface of the base so as to rotate up and down around its second side, so that the inclination angles of the first adjusting plate and the second adjusting plate can be adjusted so that the first adjusting plate, the second adjusting plate and the inner wall of the housing The corresponding part of the bottom surface is substantially flush;

The commissioning platform also includes a first limiting member acting on the first adjusting plate for positioning the first adjusting plate at the desired inclination angle, and acting on the second adjusting plate for positioning the second adjusting plate at the required angle of inclination. The second limit piece that needs to be tilted;

In step 2, the two sets of wheels of the first trolley are respectively supported on the first adjustment plate and the second adjustment plate of the above-mentioned debugging platform before entering the casing, and the angles of the two wheel frames are adjusted so that the rotation axes of the two sets of wheels They are respectively parallel to the board surfaces of the first and second adjustment boards; then the first trolley moves from the debugging platform to the bottom surface of the inner wall of the housing under the action of the above-mentioned pulling force.

In this way, the inclination angles of the first and second adjustment plates can be adjusted according to the size of the housing, and then the first trolley can be adjusted on the first and second adjustment plates, so that the application can adjust the first trolley outside the housing. Make adjustments to facilitate the introduction of internal parts.

Compared with the prior art, the present invention has the advantage that: during the introduction operation, the first end of the inner part is supported on the bottom surface of the inner wall of the housing by the first trolley, and the second end of the inner part is supported on the bottom surface of the inner wall by the second trolley. base surface, and both the first trolley and the second trolley can move axially along the housing. When a horizontal pulling force is applied to the first end of the inner part along the direction of inner part introduction, the inner part and the inner part can be pulled. The first trolley and the second trolley move to complete the introduction of the internal parts. During this process, there is no need to use the crane for lifting, which is convenient for open-air operations or occasions without lifting equipment, and can improve the stability and safety of the internal parts introduction operation. and reduce the risk of internal parts being scratched.

Description of drawings

Fig. 1 is a schematic structural view of a working state of Embodiment 1 of the present invention;

Fig. 2 is another working state diagram of Embodiment 1 of the present invention (the housing, the first trolley, the second trolley and other components are omitted);

Fig. 3 is a three-dimensional exploded view of the frame assembly in Embodiment 1 of the present invention (the accompanying trolley is omitted);

Fig. 4 is the right view of Fig. 2;

Fig. 5 is a schematic structural diagram of direction B in Fig. 1;

Fig. 6 is a schematic structural diagram of direction C in Fig. 1;

Fig. 7 is a three-dimensional exploded view of the first trolley supported on the inner wall of the housing in Embodiment 1 of the present invention;

Figure 8 is an enlarged view of part A in Figure 1;

FIG. 9 is a schematic structural diagram of the debugging platform in Embodiment 1 of the present invention;

Fig. 10 is a cross-sectional view of the commissioning platform in Embodiment 1 of the present invention;

Fig. 11 is another cross-sectional view of the commissioning platform in Embodiment 1 of the present invention;

Fig. 12 is a cross-sectional view of the D direction in Embodiment 1 of the present invention (omitting the inner part, part of the first trolley and part of the housing);

Fig. 13 is a partial structural schematic diagram of the working state of Embodiment 2 of the present invention;

FIG. 14 is an enlarged view of part B in FIG. 13 .

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Embodiment one:

As shown in Figures 1 to 12, it is a preferred embodiment 1 of the introduction method of a large-scale heat exchange equipment internal part of the present invention. The heat exchange equipment includes a cylindrical shell 10 and an internal part 20, and the shell 10 has a The cavity extending axially and having the first port 11 and the second port 12 respectively on the two end faces is used for the introduction of the inner part 20. The direction) has opposite first end portion 21, second end portion 22. In this embodiment, as shown in Figure 1, the housing 10 is placed horizontally and constrained on the base surface 1a, the axial direction of the housing 10 extends along the left and right directions, the first port 11 is located on the left end surface of the housing 10, the second The port 12 is located on the end face on the right side of the housing 10 . In order to realize the introduction of the inner part 20, the first end 21 of the inner part 20 is provided with a first support tube 23 extending to the left, and the second end 22 of the inner part 20 is provided with a second support tube extending to the right twenty four. After the introduction work is completed, the first support tube 23 and the second support tube 24 can be disassembled from the inner part 20 .

In order to complete the introduction of the internal parts 20 , this embodiment also includes a first trolley 100 , a frame assembly 200 , a debugging platform 300 , a second trolley 400 and a bracket 500 .

As shown in FIGS. 1-4 , the frame assembly 200 is disposed on the left side of the casing 10 , and the frame assembly 200 includes a frame body 210 , a plurality of connecting pieces 220 , a mounting plate 230 and a following trolley 270 . Inside the frame body 210 is a channel 211 extending horizontally along the introduction direction of the inner part 20 and having an inlet 212 passing through its side wall. The inlet 212 of the channel 211 is opposite to the first port 11 of the housing 10 . The bottom wall of the channel 211 is provided with a slide rail 260 extending horizontally along the introduction direction of the inner part 20. The slide rail 260 is provided with a follow-up trolley 270 that can move along the slide rail 260. The top of the follow-up trolley 270 is provided for supporting the interior The supporting part 271 of the piece 20. A plurality of connecting pieces 220 are arranged on the side wall of the above-mentioned frame body 210 through respective mounting plates 230 and arranged at intervals along the circumference of the entrance 212 of the channel 211, and each connecting piece 220 has an end surface capable of being connected to the above-mentioned housing 10 The connector 221. In this embodiment, each connecting piece 220 is a component that can expand and contract along the direction in which the inner piece 20 is introduced, and the connecting head 221 is located at the flexible end of the component. In this way, the lengths of the connecting pieces 220 can be adjusted according to the distance between the frame body 210 and the end surface of the housing 10 , so that the connecting head 221 can be better connected to the end surface of the housing 10 . The connection between the connecting head 221 and the end surface of the housing 10 may be connected by bolts, buckled, or connected in other detachable ways.

The number of the mounting plates 230 matches the number of the connectors 220, and the multiple mounting plates 230 are radially installed on the side wall of the frame body 210. The space 233 through which part of . Each connecting piece 220 is mounted on a corresponding mounting plate 230 , and can be moved along the length direction of the mounting plate 230 before being fixed. Specifically, the surface of each mounting plate 230 is provided with a mounting groove 231 extending along its length direction, each connector 220 is inserted into the mounting groove 231 of the corresponding mounting plate 230, and the groove wall of the mounting groove 231 There are a plurality of mounting holes 232 spaced along its length direction. In this way, each connecting piece 220 can move along the installation groove 231 to adjust its position, and then the positioning of the connecting piece 220 is realized through the cooperation of bolts and other components with the installation hole 232 .

The bottom of the frame body 210 is provided with a plurality of vertically extending supporting legs 240, and each supporting leg 240 is a telescopic adjustment structure capable of adjusting the height. Specifically, each supporting leg 240 is a screw nut assembly, and the first screw 241 in the screw nut assembly is vertically arranged, and the top of the first screw 241 is inserted in the socket on the bottom surface of the frame body 210, and the screw nut The nut 1 242 in the assembly is threadedly connected with the threaded rod 1 241 , and the upper end surface of the nut 1 242 is against the bottom surface of the frame body 210 . By rotating the nut one 242, the height of the supporting leg 240 can be adjusted.

In this embodiment, the frame body 210 includes a lower frame 213, and an upper frame 214 detachably constrained on the lower frame 213. bottom. The upper frame 213 is provided with a traction mechanism 250 for pulling the inner part 20 to move. The traction mechanism 250 can be a hydraulic cylinder, a pneumatic cylinder, an electric cylinder, etc. arranged horizontally. The first support tube 23 pulls the inner part 20 to move and be introduced into the casing 10 .

As shown in FIGS. 1 , 7 , 8 , and 12 , the above-mentioned first trolley 100 includes a vehicle frame 110 , wheels 120 and a lifting mechanism capable of lifting. The top of the vehicle frame 110 is provided with a supporting member 130 for supporting the first end portion 21 of the inner part 20 , and the supporting member 130 is a plate-shaped body arranged horizontally. In order to support the inner part 20 better, in this embodiment, the top surface of the support member 130 is provided with a limiting groove 131 for inserting the first end 21 of the inner part 20 therein, and the bottom wall of the limiting groove 131 is provided with a Anti-slip mat 170, and the two side walls of the limiting groove 131 along the horizontal first direction (ie the front and rear direction in Figure 1, the left and right direction in Figure 7) are respectively provided with push rods that can move along the first direction 132 , each push rod 132 is arranged horizontally and its inner end extends into the limiting groove 131 . Specifically, threaded holes 133 extending along the first direction are respectively defined on two side walls of the limiting groove 131 in the first direction, and the push rod 132 is a screw threaded in the corresponding threaded holes 133 . By rotating the push rod 132 , the position of the push rod 132 can be adjusted, so that the inner end of the push rod 132 abuts against the inner part 20 , and the inner part 20 can be limited.

Meanwhile, in order to adjust the height of the support member 130, the support member 130 is supported on the top of the vehicle frame 110 through the above-mentioned jacking mechanism. The jacking mechanism includes a telescopic power member 150 disposed on the top of the vehicle frame 110 , the telescopic power member 150 is a pneumatic cylinder, a hydraulic cylinder or an electric cylinder, and the output end of the telescopic power member 150 faces upward and abuts against the support member 130 . The lifting mechanism also includes a screw nut pair 160, and the screw nut pair 160 has at least two groups and is arranged on the periphery of the telescopic power part 150, and the screw mandrel two 161 in each group of screw nut pairs 160 are vertically arranged, and the screw mandrel The top of the second screw 161 is offset against the above-mentioned support member 130 , and the second screw nut 162 in each set of screw nut pairs 160 is threadedly connected with the second screw screw 161 and constrained on the top of the vehicle frame 110 . In this embodiment, since the support member 130 is a plate-shaped body arranged horizontally, in order to support the plate-shaped body more stably, the output end of the telescopic power member 150 is arranged corresponding to the center of the plate-shaped body, and each group of screw nut pairs 160 are adjacent to each other. The edge setting of the plate.

The bottom of the above-mentioned vehicle frame 110 is provided with two wheel frames 140 arranged at intervals along the first horizontal direction. There are two groups of wheels 120 and they are rotatably constrained on the bottoms of the corresponding wheel frames 140 respectively, and each set of wheels 120 The rotation axes both extend along the above-mentioned first direction, and the tops of the two wheel frames 140 are relatively rotatably constrained on the frame 110 , so that the two groups of wheels 120 can approach or move away from each other in the first direction. In this embodiment, the top of the wheel frame 140 is rotatably connected to the vehicle frame 110 through respective rotating shafts 141, and each rotating shaft 141 is horizontal and perpendicular to the first direction in a second direction (i.e. the front-rear direction in FIG. The left and right directions in Figure 8) extend. Each set of wheels 120 has two wheel units 121 , and the two wheel units 121 are arranged on the wheel frame 140 at intervals along the second direction.

During use, according to the size of the inner diameter of the housing 10, adjust the angle between the two wheel frames 140, so that the two groups of wheels 120 on the two wheel frames 140 are arranged at intervals along the circumference of the housing, and can be supported on the housing. 10 on the inner wall. At this time, each set of wheels 120 can rotate along the axial direction of the casing 10 under the action of external force, and then guide the inner part 20 into the casing 10 .

As shown in Figures 1 and 5, the above-mentioned second trolley 400 is an existing four-wheeled vehicle structure, which is arranged on the base surface 1a on the right side of the second port 12 of the housing 10, and is used to support the second part of the inner part 20. end 22. The moving direction of the second cart 400 is consistent with the moving direction of the first cart 100 .

As shown in Figures 8-12, the above-mentioned debugging platform 300 is set on the right side of the housing 10, and the debugging platform 300 includes a base 310, a first adjusting plate 320, a second adjusting plate 330, a first limiting member 340, a second Two limiters 350. The first adjusting plate 320 and the second adjusting plate 330 face upward and are arranged side by side on the top surface of the base 310 . Moreover, the first adjusting plate 320 and the second adjusting plate 330 are provided with positioning slots 370 extending along the left and right directions. The first adjusting plate 320 has a first side 321 opposite to the second adjusting plate 330, the second adjusting plate 330 has a second side 331 opposite to the first side 321, and the first adjusting plate 320 can wrap around its first The side 321 is constrained on the top surface of the base 310 to rotate up and down, and the second adjustment plate 330 is constrained to rotate up and down around its second side 331 on the top surface of the base 310, so that the first adjustment plate 320 can be adjusted. 1. The inclination angle of the second adjusting plate 330 , so that the corresponding parts of the first adjusting plate 320 and the second adjusting plate 330 are substantially flush with the bottom surface of the inner wall of the casing 10 . Specifically, the first side 321 of the first adjusting plate 320 and the second side 331 of the second adjusting plate 330 both extend along the left and right directions, and the two are spaced apart. The first side 321 of the first adjusting plate 320 and the second side 331 of the second adjusting plate 330 are connected to the top surface of the base 310 through respective first pins 363 and first nuts 364 respectively, and each first The tops of the pin shafts 363 can be constrained on the corresponding adjustment plates forward and backward, and the top surface of the base 310 is provided with a strip-shaped hole 312 extending forward and backward, and the bottom ends of each first pin shaft 363 pass through the above-mentioned strips downwards. shaped hole 312, and threaded with the first nut 364. In this embodiment, there are four sets of first pin shafts 363 and first nuts 364, and they are arranged in pairs at the left and right ends of the first side 321 of the first adjusting plate 320 and at the ends of the second side 331 of the second adjusting plate 330. Left and right ends.

At the same time, the third side of the first regulating plate 320 opposite to the first side 321 and the fourth side of the second regulating plate 330 opposite to the second side 331 respectively pass through the respective second pin shafts 365, the first The two nuts 366 are connected to the top surface of the base 310, and the top ends of the second pin shafts 365 can be rotated back and forth and constrained on the corresponding adjustment plates respectively, and the bottom ends of the second pin shafts 365 pass through the above-mentioned strips downwards. Hole 312 (the strip hole 312 that the second pin 365 passes can communicate with the above-mentioned strip hole for the first pin 363 to pass, but preferably adopts a structure that is separated from each other in the figure), and is connected with the second nut 366 thread connection. Similarly, the second pin shaft 365 and the second nut 366 also have four groups and are arranged in twos at the left and right ends of the third side of the first adjusting plate 320 and at the left and right ends of the fourth side of the second adjusting plate 330 .

The above-mentioned first limiting member 340 acts on the first adjusting plate 320 for positioning the first adjusting plate 320 at a desired inclination angle; the second limiting member 350 acts on the second adjusting plate 330 for positioning the first adjusting plate 320 The second adjusting plate 330 is positioned at the desired inclination angle. Specifically, the first limiting member 340 includes a first limiting block 341 inserted between the bottom surface of the first adjusting plate 320 and the top surface of the base 310 from front to rear, and the first limiting block 341 has a The first inclined surface 342 matched with the bottom surface of the first adjusting plate 320, the first inclined surface 342 slopes downward from front to back (that is, the first inclined surface 342 makes the thickness of the first limiting block 341 smaller from front to rear); The second limiting member 350 includes a second limiting block 351 inserted between the bottom surface of the second adjusting plate 330 and the top surface of the base 310 from back to front. The bottom surface of the adjusting plate 330 is matched with the second slope 352 , and the second slope 352 slopes downward from back to front (that is, the second slope 352 makes the thickness of the second limiting block 351 smaller from back to front). In this embodiment, there are multiple first limiting blocks 341 and second limiting blocks 351 arranged at intervals along the left and right directions. Simultaneously, in order to realize the positioning of each first limiting block 341 and the second limiting block 351, each first limiting block 341 and the second limiting block 351 are provided with a vertical limiting hole 360, and the base 310 Positioning holes 311 opposite to respective limiting holes 360 are provided on the top surface of the top surface, and each first limiting block 341 and second limiting block 351 pass through respective bolts 361 and nuts 362 (that is, bolts 361 pass through corresponding limiting holes). The position hole 360, the positioning hole 311 are connected with the nut 362) and constrained on the top surface of the base 310.

In order to adjust the height of the first adjustment plate 320 and the second adjustment plate 330, a plurality of vertically extending support columns 380 are provided at the bottom of the base 310, and each support column 380 is a telescopic adjustment structure capable of adjusting the height. In this embodiment, each supporting column 380 is a screw nut pair, and the screw rod three 381 in the screw rod nut pair are arranged vertically, and the top of the screw rod three 381 is inserted in the socket on the bottom surface of the base 310, and the screw rod three 381 The nut three 82 in the rod nut pair is threadedly connected with the screw rod three 381, and the upper end surface of the nut three 382 is against the bottom surface of the above-mentioned base 310.

Before the inner part 20 is introduced into work, the debugging platform 300 is placed on the right side of the second port 12 of the housing 10, and the inclination angles of the first adjusting plate 320 and the second adjusting plate 330 are adjusted according to the radian of the inner peripheral wall of the housing 10, Make the first adjustment plate 320, the second adjustment plate 330 substantially flush with the corresponding part of the inner peripheral wall of the housing 10; then the first trolley 100 is placed on the debugging platform, and the two groups of wheel frames 140 of the first trolley 100 are adjusted so that The two groups of wheels 120 of the first trolley 100 can be respectively supported on the positioning grooves 370 of the first adjusting plate 320 and the second adjusting plate 330, and the tires of the two groups of wheels 120 are attached to the bottom walls of the respective corresponding positioning grooves 370 .

The importing steps of internal parts 20 in this embodiment are as follows:

1. Place the casing 10 horizontally and constrain it on the base surface 1a;

2. Place the first trolley 100 on the adjustment plate of the debugging platform 300, place the second trolley 400 on the base surface 1a on the right side of the housing 10, and then support the first end 21 of the inner part 20 on the first On the support member 130 of the trolley 100, the second end 22 of the inner part 20 is supported on the second trolley 400;

3. Drive the traction mechanism 250, thereby exerting a horizontal pulling force along the introduction direction of the inner part 20 on the first end 21 of the inner part 20, thereby pulling the inner part 20, the first trolley 100, and the second trolley 400 toward the inner part 20 is moved in the introduction direction, after the first support tube 23 on which the inner part 20 is moved extends out of the first port 11 of the housing 10, the first support tube 23 is supported on the support portion 271 of the above-mentioned follower trolley 270, and Under the action of the traction mechanism 250 , it moves along the slide rail 260 together with the follower trolley 270 until the first end 21 of the inner part 20 moves to the first port 11 to complete the introduction of the inner part 20 .

After the first support tube 23 is supported on the support portion 271 of the above-mentioned follower trolley 270 , the first trolley 100 can be moved in the opposite direction of the introduction direction, and moved out of the housing 10 .

In order to improve the safety and stability of the inner part introduction operation, when the traction mechanism 250 is working tentatively, the first support tube 23 and the second support tube 24 on the inner part 20 are supported on the base surface 1a by respective brackets 500 .

Embodiment two:

As shown in Figures 13 and 14, it is the second preferred embodiment of the method for introducing the internal parts of a large-scale heat exchange equipment of the present invention. This embodiment is basically the same as the first embodiment, except that the traction mechanism 250 in this embodiment includes one (i.e. the right end in Fig. 13 ) the chain 251 that connects the first end 21 of the inner part 20, the driving device that drives the chain 251 to the inner part 20 introduction direction (i.e. the direction indicated by the arrow in Fig. 1 ) and can stop the chain 251 The locking structure that moves in the opposite direction. The driving device includes a hook 252 and a driver 253 that drives the hook 252 to reciprocate along the introduction direction of the inner part 20, wherein one end of the hook 252 is a hook structure that is compatible with the chain 251, and the other end of the hook 252 is connected to the driver 253. The output end is connected, and the driver 322 of the present embodiment selects hydraulic jack for use. The locking structure includes a ratchet 254 and a pawl 255 matched with the ratchet 254 . The ratchet 254 is in transmission connection with the chain 251 . The ratchet 255 is rotatably connected to a position close to the ratchet 254 on the frame assembly 200 . In the state where the output end of the driver 253 moves toward the direction of introducing the inner part 20, one end of the hook 252 hooks into the chain 251 and pulls the chain 251 to move along the direction of introducing the inner part 20, and the pawl 255 does not affect the chain 251 In the state that the output end of the driver 253 moves in the opposite direction to the introduction of the inner part 20, one end of the hook 252 breaks away from the chain 251 and moves along the length of the chain 251 in the opposite direction of the introduction of the inner part 20, while the ratchet One end of 255 snaps in the draw-in groove of ratchet 254, to prevent chain 251 from moving in the opposite direction.

Claims (2)

1. A method of introducing an inner part of a large heat exchange device, the heat exchange device comprising a tubular housing (10) and an inner part (20), the housing (10) having a chamber therein extending axially and having a first port (11) and a second port (12) at both end faces, respectively, for introducing the inner part (20), the inner part (20) having opposite first (21) and second (22) ends in an introduction direction;

the method is characterized by comprising the following steps of:

1. placing and restraining the housing (10) horizontally on the base surface (1 a);

2. the inner piece (20) is supported on the base surface (1 a) through a first trolley (100) and a second trolley (400), the first trolley (100) is arranged at a second port (12) of the shell (10) adjacent to a first end (21) of the inner piece (20) and is axially movably supported on the bottom surface of the inner wall of the shell (10), the second trolley (400) is arranged adjacent to a second end (22) of the inner piece (20) and is movably supported on the base surface (1 a) outside a second port (12) of the shell (10), and the moving direction of the second trolley (400) is consistent with that of the first trolley (100);

3. applying a horizontal pulling force along the direction of introduction of the inner piece (20) on the first end (21) of the inner piece (20) by means of a pulling mechanism (250) located outside the first port (11) of the housing (10), thereby pulling the inner piece (20) and the first trolley (100) to move towards the first port (11) of the housing (10) to complete the introduction of the inner piece (20);

the traction mechanism (250) comprises a chain (251) with one end connected with the first end (21) of the inner member (20), a driving device for driving the chain (251) to move towards the leading direction of the inner member (20), and a locking structure capable of preventing the chain (251) from moving in the opposite direction.

2. The method of introduction of claim 1, wherein: the driving device comprises a hook hand (252) and a driver (253) for driving the hook hand (252) to reciprocate along the guiding direction of the inner piece (20), wherein one end of the hook hand (252) is of a clamping hook structure matched with the chain (251), the other end of the hook hand (252) is connected with the output end of the driver (253), and in a state that the output end of the driver (253) moves towards the guiding direction of the inner piece (20), one end of the hook hand (252) is hooked into the chain (251) and pulls the chain (251) to move along the guiding direction of the inner piece (20); in a state in which the output end of the driver (253) moves in the opposite direction of the introduction of the inner member (20), one end of the hook (252) is separated from the chain (251) and moves in the opposite direction of the introduction of the inner member (20) along the length of the chain (251);

the locking structure comprises a ratchet wheel (254) and a pawl (255) matched with the ratchet wheel (254), the ratchet wheel (254) is in transmission connection with the chain (251), and the pawl (255) is rotatably connected to the frame assembly (200) at a position close to the ratchet wheel (254).

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