Maintenance device for round block hole type graphite heat exchanger

Abstract

A round block hole type graphite heat exchanger maintenance device comprises a first supporting workpiece and a second supporting workpiece, a tray is arranged at the bottom of the first supporting workpiece, a center jacking column is connected to the middle of the tray, first mounting holes are machined in the periphery of the tray, and the second supporting workpiece is located above the first supporting workpiece and comprises an upper supporting beam. The upper supporting beams are symmetrically arranged on the two sides of the center supporting column, the middles of the upper supporting beams are connected with the side supporting columns, second installation holes are machined in the peripheries of the upper supporting beams, and the hole positions of the first installation holes and the second installation holes are machined according to the installation hole positions of the lower end socket of the heat exchanger. Compared with the prior art, the maintenance device can be replaced and maintained on site, hoisting equipment is not needed, after the maintenance device is adopted, the maintenance period is shortened, the cost is reduced, on-site maintenance can be achieved, and continuous production of enterprises is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a maintenance device for a circular block hole type graphite heat exchanger. Background Art

[0002] As Figure 15 shown, a circular block hole type graphite heat exchanger generally consists of a steel upper cover plate 100, a graphite upper head 200, a graphite heat exchange unit block 300, a graphite lower head 400, and a steel lower cover plate 500. It is assembled in a modular way, with an outer steel shell, and fixed into a whole by bolt assembly and compression springs. Usually, when used on-site, the block hole type graphite heat exchanger is installed vertically. During use, faults such as damage to the pipe orifice of the graphite lower head or cracking of the lower head are likely to occur. If a fault occurs, due to this assembly method of the circular block hole type graphite heat exchanger, usually only the whole heat exchanger can be hoisted offline and returned to the manufacturer for replacement and repair. This repair method takes a long time, is costly, and delays production. Some user factories even have to demolish the factory building to lift out the heat exchanger, which is very cumbersome. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a maintenance device for a circular block hole type graphite heat exchanger aiming at the above-mentioned deficiencies of the prior art.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is:

[0005] A maintenance device for a circular block hole type graphite heat exchanger includes a first supporting workpiece and a second supporting workpiece. A tray is arranged at the bottom of the first supporting workpiece. A central jack is connected in the middle of the tray. First mounting holes are machined on the periphery of the tray. The second supporting workpiece is located above the first supporting workpiece. The second supporting workpiece includes an upper supporting beam symmetrically arranged on both sides of the central jack. A side jack is connected in the middle of the upper supporting beam. Second mounting holes are machined on the periphery of the upper supporting beam. The hole positions of the first mounting holes and the second mounting holes are machined according to the mounting hole positions of the lower head of the heat exchanger.

[0006] Further, the tray includes a first supporting leg arranged in a "cross" shape. The first supporting legs are strengthened by diagonal braces. The end of the first supporting leg is connected with a first backing plate. The first mounting holes are arranged on the first backing plate. A central backing plate is connected at the center of the first supporting leg. The central jack is connected to the central backing plate.

[0007] Further, the first supporting leg includes two channel steels. The two channel steels are connected by a connecting plate.

[0008] Further, the central jack includes a first central jack and a second central jack.

[0009] Further, the second supporting workpiece includes second supporting legs, with second cushion plates connected to both ends of the second supporting legs. The second mounting holes are provided on the second cushion plates. A central cushion plate two is connected to the center of the second supporting legs, and the side jack columns are connected to the central cushion plate two.

[0010] Further, the second supporting legs include two channel steels two, which are connected by a connecting plate two between the channel steels two.

[0011] Compared with the prior art, a maintenance device for a circular block hole type graphite heat exchanger of the present utility model can perform replacement and maintenance on-site without the need for hoisting equipment. After adopting this maintenance device, the maintenance cycle is shortened, the cost is reduced, and on-site maintenance can be achieved, which is beneficial to the continuous production of enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is a schematic structural diagram of the tray of the present utility model;

[0014] Figure 3 is a schematic structural diagram of the first central jack column of the present utility model;

[0015] Figure 4 is a schematic structural diagram of the second central jack column of the present utility model;

[0016] Figure 5 is a schematic structural diagram of the upper supporting beam of the present utility model;

[0017] Figure 6 is a schematic structural diagram of the side jack column of the present utility model;

[0018] Figure 7 is a state diagram of the first step of using the present utility model;

[0019] Figure 8 is a state diagram of the second step of using the present utility model;

[0020] Figure 9 is a state diagram of the third step of using the present utility model;

[0021] Figure 10 is a state diagram of the fourth step of using the present utility model;

[0022] Figure 11 is a state diagram of the fifth step of using the present utility model;

[0023] Figure 12 is a state diagram of the sixth step of using the present utility model;

[0024] Figure 13 is a state diagram of the seventh step of using the present utility model;

[0025] Figure 14 It is the state diagram of the eighth step of the use of the present utility model;

[0026] Figure 15 It is a schematic structural diagram of an existing circular block hole type graphite heat exchanger;

[0027] Among them, 1. Supporting workpiece one, 2. Supporting workpiece two, 3. First mounting hole, 4. Second mounting hole, 5. Long bolt, 11. Tray, 12. Central jack column, 21. Upper supporting beam, 22. Side jack column, 111. Supporting leg one, 112. Connecting plate one, 113. Inclined support, 114. Lining plate one, 115. Central lining plate one, 121. Central jack column one, 122. Central jack column two, 211. Supporting leg two, 212. Connecting plate two, 213. Lining plate two, 214. Central lining plate two. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be described clearly and completely.

[0029] As Figures 1 to 6 shown, a maintenance device for a circular block hole type graphite heat exchanger includes a supporting workpiece one 1 and a supporting workpiece two 2. The supporting workpiece one 1 and the supporting workpiece two 2 are connected to the heat exchanger and are used to support the graphite heat exchange unit block. A tray 11 is arranged at the bottom of the supporting workpiece one 1, a central jack column 12 is connected in the middle of the tray 11, and a first mounting hole 3 is machined on the periphery of the tray 11. The supporting workpiece two 2 is located above the supporting workpiece one 1. The supporting workpiece two 2 includes an upper supporting beam 21, and the upper supporting beam 21 is symmetrically arranged on both sides of the central jack column 12. A side jack column 22 is connected in the middle of the upper supporting beam 21, and a second mounting hole 4 is machined on the periphery of the upper supporting beam 21. The hole positions of the first mounting hole 3 and the second mounting hole 4 are machined according to the mounting hole positions of the lower head of the heat exchanger.

[0030] In this embodiment, the tray 11 includes supporting legs one 111 arranged in a "cross" shape. The supporting legs one 111 include two channel steels one, the channel steels one are arranged back to back, and the channel steels one are connected by a connecting plate one 112 and then welded into a "cross" shape. The supporting legs one 111 are strengthened and connected by inclined supports 113. The inclined supports 113 also adopt channel steels. The end of the supporting legs one 111 is connected with a lining plate one 114, and the first mounting hole 3 is arranged on the lining plate one 114. A central lining plate one 115 is connected at the center of the supporting legs one 111, and the central jack column 12 is connected to the central lining plate one 115. In this embodiment, the central jack column 12 includes a central jack column one 121 and a central jack column two 122. The central jack column one 121 and the central jack column two 122 are welded by upper and lower two support plates and channel steels, and the combined central jack column one 121 and central jack column two 122 are fixed on the central lining plate one 115 by welding or screw connection.

[0031] In this embodiment, the second supporting workpiece 2 includes second supporting legs 211. The second supporting legs 211 include two channel steels. The two channel steels are arranged back to back and are connected by a second connecting plate 212. Both ends of the second supporting legs 211 are connected with second backing plates 213. The second mounting holes 4 are arranged on the second backing plates 213. A central backing plate 214 is connected to the center of the second supporting legs 211. The side jacking posts 22 are connected to the central backing plate 214. The side jacking posts 22 are also welded by two support plates and channel steels. The combined side jacking posts 22 are fixed to the central backing plate 214 by welding or screw connection.

[0032] As Figures 9 to 14 shown, a method for using a repair device for a circular block hole type graphite heat exchanger includes the following steps.

[0033] Step 1: Symmetrically loosen all the bolts at the top of the heat exchanger to make the spring in an unloaded state. Install the first supporting workpiece 1 at the bottom of the heat exchanger. Loosen the bolts at the bottom of the heat exchanger at intervals and replace the bottom bolts with long bolts. Fix the first supporting workpiece 1 to the mounting holes at the bottom of the heat exchanger through the long bolts 5. The central jacking post 12 on the first supporting workpiece 1 supports the graphite heat exchange unit block.

[0034] Step 2: Loosen the remaining bolts at the bottom of the heat exchanger to move the lower cover plate and the graphite lower head downwards.

[0035] Step 3: Install the second supporting workpiece 2 and tighten the installation bolts so that the side jacking posts 22 on the installed second supporting workpiece 2 support the graphite heat exchange unit block.

[0036] Step 4: Loosen the long bolts 3, remove the first supporting workpiece 1, the lower cover plate and the graphite lower head, and replace them with a new graphite lower head.

[0037] Step 5: Install the first supporting workpiece 1, the lower cover plate and the new graphite lower head again, and fix them through the long bolts 3 to ensure that the central jacking post supports the graphite heat exchange unit block.

[0038] Step 6: Remove the second supporting workpiece 2.

[0039] Step 7: Reset the lower cover plate and the new graphite lower head.

[0040] Step 8: Loosen the long bolts 3, remove the first supporting workpiece 1, symmetrically tighten the bolts at the bottom of the heat exchanger, and then symmetrically tighten the bolts at the top to make the spring return to its original loaded state, that is, the replacement is completed.

[0041] The present utility model is not limited to the described embodiments. Those skilled in the art can still make some modifications or changes without departing from the spirit of the present utility model, that is, within the scope of disclosure. Therefore, the scope of the protection of the rights of the present utility model shall be subject to the scope defined by the claims.

Claims

1. A repair device for a circular block hole type graphite heat exchanger, characterized in that: It includes a supporting workpiece 1 and a supporting workpiece 2. A tray is provided at the bottom of the supporting workpiece 1. A central jack post is connected in the middle of the tray. First mounting holes are machined on the periphery of the tray. The supporting workpiece 2 is located above the supporting workpiece 1. The supporting workpiece 2 includes an upper supporting beam which is symmetrically arranged on both sides of the central jack post. A side jack post is connected in the middle of the upper supporting beam. Second mounting holes are machined on the periphery of the upper supporting beam. The hole positions of the first mounting holes and the second mounting holes are machined according to the mounting hole positions of the lower head of the heat exchanger.

2. The repair device for a circular block hole type graphite heat exchanger according to claim 1, characterized in that: The tray includes supporting legs 1 arranged in a "cross" shape. The supporting legs 1 are strengthened and connected by diagonal braces. A first backing plate is connected to the end of the supporting legs 1. The first mounting holes are arranged on the first backing plate. A central backing plate 1 is connected at the center of the supporting legs 1. The central jack post is connected to the central backing plate 1.

3. The repair device for a circular block hole type graphite heat exchanger according to claim 2, wherein: The supporting legs 1 include two channel steels 1 which are connected by a connecting plate 1.

4. A repair device for a circular block hole type graphite heat exchanger according to claim 1, characterized in that: The central jack post includes a central jack post 1 and a central jack post 2.

5. The maintenance device for a circular block hole type graphite heat exchanger according to claim 1, characterized in that: The supporting workpiece 2 includes supporting legs 2. Second backing plates are connected to both ends of the supporting legs 2. The second mounting holes are arranged on the second backing plates. A central backing plate 2 is connected at the center of the supporting legs 2. The side jack post is connected to the central backing plate 2.

6. The repair device for a circular block hole type graphite heat exchanger according to claim 5, characterized in that: The supporting legs 2 include two channel steels 2 which are connected by a connecting plate 2.

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