Core jacking device for overhauling heat exchanger

Abstract

The utility model discloses a top core device for heat exchanger maintenance, which relates to the technical field of heat exchanger maintenance and comprises a top plate, two pulling plates are symmetrically arranged on the front surface of the top plate, first lug plates are symmetrically and fixedly connected to the side surfaces, close to each other, of the two pulling plates, and a limiting sleeve is fixedly connected to the center of each pulling plate. A jack is movably inserted into the limiting sleeve, and a supporting assembly is arranged on the front face of the top plate and used for supporting the jack. During use, the limiting sleeve is arranged and located in the center of the front face of the top plate, so that a worker only needs to directly insert one end of the jack into the limiting sleeve, the jack can be conveniently and rapidly positioned and installed, the top core machining operation is effectively simplified, the labor intensity of the worker is reduced, and the working efficiency is improved. And the machining efficiency of the ejector core is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchanger maintenance, and particularly relates to a core jacking device for heat exchanger maintenance. Background Technique

[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid, also known as a heat exchanger. Heat exchangers play an important role in many industrial productions such as chemical industry, petroleum, power, food and others. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators, reboilers, etc.

[0003] In industries such as petrochemical and coal chemical industries, heat exchangers are important components of process equipment. Because heat exchangers are in direct contact with the medium for a long time, affected by various reasons such as the viscosity of the medium and medium corrosion, the heat transfer capacity of the heat exchanger becomes poor. During equipment maintenance and repair, it is necessary to regularly remove the core of the heat exchanger for maintenance. Since the core of the heat exchanger is adhered to the inner wall of the heat exchanger shell through a solid medium, it often causes the core of the heat exchanger to be unable to be removed, greatly increasing the safety risk during maintenance and affecting the maintenance progress.

[0004] The Chinese utility model patent with the utility model patent number CN202120781518.9 records a special core jacking device for heat exchangers. By setting a jack and a square steel shoulder pole, a jacking force can be applied to the core of the heat exchanger. In this way, it can cooperate with a core extraction machine to pull the core of the heat exchanger from another direction through a steel wire rope, so that the core of the heat exchanger is stressed from both the front and the back, and thus the core of the heat exchanger can be smoothly removed, reducing the difficulty of removing the core of the heat exchanger. However, in the above device, during the core jacking operation, the staff needs to manually adjust the position of the jack to make the jack align with the center position of the square steel shoulder pole and the center position of the core of the heat exchanger. Since the jack generally has a certain weight, even with the assistance of the suspension of the steel wire rope, adjusting the position of the jack is still relatively laborious, increasing the labor intensity of the staff and reducing the efficiency of the core jacking operation. Content of the Utility Model

[0005] The purpose of the utility model is to provide a core jacking device for heat exchanger maintenance, so as to solve the problem that the existing core jacking device needs to manually adjust the position of the jack, which is relatively laborious, increases the labor intensity of the staff, and reduces the efficiency of the core jacking operation as mentioned in the above background technique.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a jacking core device for repairing a heat exchanger, comprising a top plate, two pull plates are symmetrically arranged on the front side of the top plate, first ear plates are symmetrically fixedly connected to the adjacent sides of the two pull plates, a limiting sleeve is fixedly connected to the central position of the pull plate, a jack is movably inserted in the limiting sleeve, the support assembly is used to support the jack, the support assembly comprises two rotating plates symmetrically rotatably connected to the top surface of the top plate through a first rotating rod and a first torsion spring, and two groups of arc-shaped support plates are symmetrically fixedly connected to the front sides of the two rotating plates.

[0007] Preferably, a support assembly is provided on the front side of the top plate, and the support assembly also includes a limit unit provided on the top plate, and the limit unit is used to limit the two rotating plates in a separated state. The advantage of such a setting is that the two support plates can be stably located in positions away from each other, thereby making it convenient for the staff to insert the jack into the limit sleeve or remove it from the limit sleeve.

[0008] Preferably, the number of the support plates in each group is multiple, and the support plates in each group are equidistantly distributed along the length direction of the rotating plate, and the length of each group of multiple support plates gradually increases from the direction away from the limiting sleeve to the direction close to the limiting sleeve. The advantage of such an arrangement is that when the two rotating plates cooperate with the two groups of support plates to clamp the jack, the two rotating plates are in an eight-shape, so that the jack can be more stably limited and supported, further improving the reliability of the device.

[0009] Preferably, the limiting unit includes two inserting rods symmetrically and movably inserted on the outer peripheral surface of the limiting sleeve. Two fixing rings are symmetrically and fixedly sleeved on the outer peripheral surfaces of the two inserting rods. Two first elastic members are symmetrically and fixedly connected between the two fixing rings and the outer peripheral surface of the limiting sleeve. The two ends of the two inserting rods away from each other are symmetrically and fixedly connected with L-shaped plates. The two L-shaped plates are symmetrically and slidably connected to the front surface of the top plate through sliders and chutes. Two clamping plates are symmetrically and fixedly connected to the side surfaces of the two L-shaped plates close to each other. Two clamping grooves are symmetrically formed on the side surfaces of the two rotating plates away from each other. The two clamping plates can be movably inserted into the two clamping grooves. The two ends of the two inserting rods close to each other penetrate through the limiting sleeve and are symmetrically and fixedly connected with two first trapezoidal blocks. The limiting unit further includes a round rod movably inserted at the center of the back surface of the top plate. A limiting plate is fixedly connected to the rear end of the round rod. The front end of the round rod penetrates through the top plate and extends into the limiting sleeve. A second trapezoidal block is fixedly connected to the rear end of the round rod. The second trapezoidal block is an isosceles trapezoid. The two inclined waist surfaces of the second trapezoidal block are respectively in contact with the inclined waist surfaces of the two first trapezoidal blocks close to each other. The advantage of such a setting is that the staff only needs to insert one end of the jack into the limiting sleeve and push the second trapezoidal block forward, then the two clamping plates can be pushed in the direction away from each other until the two clamping plates are respectively pulled out from the two clamping grooves. In this way, the limitation on the two rotating plates can be released, and the two rotating plates can rotate and clamp the jack under the elastic force of the first torsion spring. When the jack needs to be removed, only need to push the two rotating plates in the direction away from each other to push open the clamping plates and fit them to the front surface of the L-shaped plates. Then the clamping plates can be inserted into the clamping grooves under the elastic force of the first elastic member to complete the limitation of the rotating plates, making the limitation and rotation operations of the rotating plates simple and convenient, greatly simplifying the core jacking operation, reducing the labor intensity of the staff, and improving the efficiency of the core jacking work.

[0010] Preferably, two pulling ropes are fixedly connected to the bottom of the upper pull plate. The bottom ends of the two pulling ropes are both fixedly connected with sleeve rings. The two sleeve rings can be movably sleeved on the outer side surface of the jack. The advantage of such a setting is that the jack can be lifted to prevent the jack from falling, further improving the reliability and safety of the device.

[0011] In summary, the technical effects and advantages of the present utility model are as follows:

[0012] 1. In the present utility model, through the setting of the limiting sleeve and the supporting assembly, the limiting sleeve is located at the central position of the front surface of the top plate. Thus, the staff only needs to directly insert one end of the jack into the limiting sleeve and then cooperate with the two groups of support plates to clamp the jack to provide position correction and support, and the positioning and installation work of the jack can be conveniently completed, effectively simplifying the core jacking processing operation, reducing the labor intensity of the staff, and improving the efficiency of the core jacking processing.

[0013] 2. In the present utility model, through the provided support assembly, when the two support plates clamp the jack under the elastic force of the first torsion spring, the position of the jack can be corrected, so that the jack is aligned with the central position of the front surface of the top plate and the middle position of the heat exchanger core. Thus, the adjustment and alignment work of the jack position is effectively simplified, and furthermore, the efficiency of the maintenance work of jacking the core is effectively improved, and the labor intensity of the staff is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those skilled in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0015] Figure 1 is a schematic structural diagram of a core jacking device for heat exchanger maintenance in an embodiment of the present utility model;

[0016] Figure 2 is a first partial structural diagram of a core jacking device for heat exchanger maintenance in an embodiment of the present utility model;

[0017] Figure 3 is a second partial structural diagram of a core jacking device for heat exchanger maintenance in an embodiment of the present utility model;

[0018] Figure 4 is a schematic diagram of the working state of a core jacking device for heat exchanger maintenance in an embodiment of the present utility model;

[0019] Figure 5 is in an embodiment of the present utility model Figure 2 is an enlarged schematic diagram of part A therein;

[0020] Figure 6 is in an embodiment of the present utility model Figure 3 is an enlarged schematic diagram of part B therein.

[0021] In the figure: 1, top plate; 2, pull plate; 3, first ear plate; 31, second ear plate; 4, limit sleeve; 5, jack; 6, support assembly; 61, rotating plate; 62, support plate; 63, limit unit; 631, insertion rod; 632, first elastic member; 633, L-shaped plate; 634, clamping plate; 6341, clamping groove; 635, first trapezoidal block; 636, round rod; 637, limit plate; 638, second trapezoidal block; 7, backing plate; 8, pull rope; 81, collar; 9, heat exchanger body; 10, core extraction machine; 11, steel wire rope. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment 1

[0024] Please refer to Figures 1-6 A core jacking device for heat exchanger maintenance as shown, which includes a top plate 1. Two pull plates 2 are symmetrically arranged on the front surface of the top plate 1. Two first ear plates 3 are symmetrically and fixedly connected to the side surfaces of the two pull plates 2 close to each other. A limit sleeve 4 is fixedly connected to the central position of the pull plate 2. A jack 5 is movably inserted into the limit sleeve 4.

[0025] It further includes a heat exchanger body 9. Two second ear plates 31 are symmetrically and fixedly connected to the outer side surface of the heat exchanger body 9. The two first ear plates 3 are respectively fixedly connected to the two second ear plates 31 through fastening bolts. It further includes a core extraction machine 10. A steel wire rope 11 is fixedly connected between the core extraction machine 10 and the heat exchanger core. One end of the jack 5 away from the top plate 1 is fixedly connected with a backing plate 7. The side surface of the backing plate 7 away from the jack 5 abuts tightly against the heat exchanger core. A support assembly 6 is arranged on the front surface of the top plate 1. The support assembly 6 is used to support the jack 5. The support assembly 6 includes two rotating plates 61 symmetrically rotatably connected to the top surface of the top plate 1 through a first rotating rod and a first torsion spring. Two groups of arc-shaped support plates 62 are symmetrically fixedly connected to the front surfaces of the two rotating plates 61.

[0026] Specifically, the jack can be supported by the two rotating plates and the two groups of support plates, so that the jack can perform the core jacking work more stably, improving the reliability of the device. And when the two groups of support plates clamp the jack under the elastic force of the first torsion spring, the position of the jack can be corrected, making the jack align with the central position on the front surface of the top plate and the middle position of the heat exchanger core, thus effectively simplifying the adjustment and alignment work of the jack position, and further effectively improving the efficiency of the maintenance core jacking work and reducing the labor intensity of the staff.

[0027] Refer to Figures 1-4 The support assembly 6 further includes a limit unit 63 arranged on the top plate 1. The limit unit 63 is used to limit the two rotating plates 61 in the separated state.

[0028] Specifically, it can make the two rotating plates 61 stably in the position of being away from each other, so that it is convenient for the staff to insert the jack 5 into the limit sleeve 4 or take it out of the limit sleeve 4.

[0029] Refer to Figures 1-4, the number of each group of support plates 62 is multiple, and each group of multiple support plates 62 is equidistantly distributed along the length direction of the rotating plate 61. The length of each group of multiple support plates 62 gradually increases from the direction away from the limit sleeve 4 to the direction close to the limit sleeve 4.

[0030] Specifically, when the two rotating plates 61 cooperate with the two groups of support plates 62 to clamp the jack 5, the two rotating plates 61 are in a V-shaped configuration. In this way, the jack 5 can be more stably limited and supported, further improving the reliability of the device.

[0031] Reference Figures 2-6 , the limiting unit 63 includes two insertion rods 631 symmetrically and movably inserted on the outer peripheral surface of the limit sleeve 4. Two fixing rings are symmetrically and fixedly sleeved on the outer peripheral surfaces of the two insertion rods 631. Two first elastic members 632 are symmetrically and fixedly connected between the two fixing rings and the outer peripheral surface of the limit sleeve 4. The ends of the two insertion rods 631 away from each other are symmetrically and fixedly connected with L-shaped plates 633. The two L-shaped plates 633 are symmetrically slidably connected to the front surface of the top plate 1 through sliders and chutes. Two clamping plates 634 are symmetrically and fixedly connected to the side surfaces of the two L-shaped plates 633 close to each other. Two clamping grooves 6341 are symmetrically formed on the side surfaces of the two rotating plates 61 away from each other. The two clamping plates 634 can be movably inserted into the two clamping grooves 6341. The ends of the two insertion rods 631 close to each other both penetrate through the limit sleeve 4 and are symmetrically and fixedly connected with two first trapezoidal blocks 635. The limiting unit 63 further includes a round rod 636 movably inserted at the central position of the back surface of the top plate 1. A limiting plate 637 is fixedly connected to the rear end of the round rod 636. The front end of the round rod 636 penetrates through the top plate 1 and extends into the limit sleeve 4. A second trapezoidal block 638 is fixedly connected to the rear end of the round rod 636. The second trapezoidal block 638 is an isosceles trapezoid, and the two inclined waist surfaces of the second trapezoidal block 638 are respectively in contact with the inclined waist surfaces of the two first trapezoidal blocks 635 close to each other.

[0032] Specifically, it enables the staff to only insert one end of the jack 5 into the limit sleeve 4 and push the second trapezoidal block 638 forward, then the two clamping plates 634 can be pushed to move away from each other until the two clamping plates 634 are respectively withdrawn from the two clamping grooves 6341. In this way, the limit on the two rotating plates 61 can be released, and the two rotating plates 61 can rotate and clamp the jack 5 under the elastic force of the first torsion spring. When the jack 5 needs to be removed, the two rotating plates 61 only need to be pushed away from each other to push open the clamping plates 634 and fit them to the front surfaces of the L-shaped plates 633. Then, the clamping plates 634 can be inserted into the clamping grooves 6341 under the elastic force of the first elastic members 632 to complete the limit on the rotating plates 61, making the limit and rotation operations of the rotating plates 61 simple and convenient, greatly simplifying the core jacking operation, reducing the labor intensity of the staff, and improving the efficiency of the core jacking work.

[0033] Reference Figure 1 and Figure 4, at the bottom of the pull plate 2 located on the upper side, two pull ropes 8 are fixedly connected, and at the bottom ends of the two pull ropes 8, collar rings 81 are fixedly connected, and the two collar rings 81 are movably sleeved on the outer side surface of the jack 5.

[0034] Specifically, it can lift the jack 5 to prevent the jack 5 from falling, further improving the reliability and safety of the device.

[0035] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A core-lifting device for overhauling a heat exchanger, comprising a top plate (1), characterized in that: Two pull plates (2) are symmetrically arranged on the front side of the top plate (1), and first ear plates (3) are symmetrically fixedly connected to the adjacent sides of the two pull plates (2). A limiting sleeve (4) is fixedly connected to the central position of the pull plate (2), and a jack (5) is movably inserted in the limiting sleeve (4). A support assembly (6) is arranged on the front side of the top plate (1), and the support assembly (6) is used to support the jack (5). The support assembly (6) includes two rotating plates (61) symmetrically connected to the top surface of the top plate (1) through a first rotating rod and a first torsion spring, and two groups of arc-shaped support plates (62) are symmetrically fixedly connected to the front sides of the two rotating plates (61).

2. A core-lifting device for heat exchanger maintenance according to claim 1, characterized in that: The supported assembly (6) further comprises a limiting unit (63) provided on the top plate (1), wherein the limiting unit (63) is used to limit the two rotating plates (61) in a separated state.

3. The core-lifting device for heat exchanger maintenance according to claim 2, characterized in that: The number of the support plates (62) in each group is multiple, and the support plates (62) in each group are equidistantly distributed along the length direction of the rotating plate (61), and the length of the support plates (62) in each group gradually increases from the direction away from the limiting sleeve (4) to the direction close to the limiting sleeve (4).

4. A core-lifting device for heat exchanger maintenance according to claim 3, characterized in that: The limiting unit (63) comprises two insertion rods (631) symmetrically and movably inserted on the outer circumference of the limiting sleeve (4); two fixing rings are symmetrically and fixedly sleeved on the outer circumference of the two insertion rods (631); two first elastic members (632) are symmetrically and fixedly connected between the two fixing rings and the outer circumference of the limiting sleeve (4); an L-shaped plate (633) is symmetrically and fixedly connected to the ends of the two insertion rods (631) that are away from each other; the two L-shaped plates (633) are symmetrically and slidably connected to the front of the top plate (1) through sliders and sliding grooves; two clamping plates (634) are symmetrically and fixedly connected to the sides of the two L-shaped plates (633) that are close to each other; two clamping grooves (6341) are symmetrically provided on the sides of the two rotating plates (61) that are away from each other; and the two clamping plates (6341) are symmetrically and fixedly connected to the sides of the two rotating plates (61) that are away from each other. 34) can be movably inserted in the two slots (6341), the adjacent ends of the two insertion rods (631) are both inserted through the limiting sleeve (4) and are symmetrically fixedly connected to the two first trapezoidal blocks (635), the limiting unit (63) also includes a round rod (636) movably inserted in the center position of the back side of the top plate (1), the rear end of the round rod (636) is fixedly connected to the limiting plate (637), the front end of the round rod (636) penetrates the top plate (1) and extends to the inside of the limiting sleeve (4), the rear end of the round rod (636) is fixedly connected to the second trapezoidal block (638), the second trapezoidal block (638) is an isosceles trapezoid, and the two oblique waist surfaces of the second trapezoidal block (638) are respectively in conflict with the adjacent oblique waist surfaces of the two first trapezoidal blocks (635).

5. The core-lifting device for heat exchanger maintenance according to claim 4, characterized in that: Two pull ropes (8) are fixedly connected to the bottom of the pull plate (2) located on the upper side, and the bottom ends of the two pull ropes (8) are fixedly connected to rings (81), and the two rings (81) can be movably sleeved on the outer surface of the jack (5).

Images