Plate heat exchanger maintenance tool

Abstract

The utility model discloses a plate heat exchanger maintenance tool, which comprises a heat exchanger frame main body, the heat exchanger frame main body comprises an upper clamping plate, a lower clamping plate and a plate sheet, the upper clamping plate and the lower clamping plate are correspondingly provided with a connecting hole and a guide hole, a short screw rod is arranged in the connecting hole, and the plate sheet is arranged in the short screw rod. The two ends of the short screw rod are connected with first nuts, a long screw rod is installed in the guide hole, the two ends of the long screw rod are connected with second nuts, the second nuts are sleeved with a supporting frame, and a hydraulic jack is arranged on the lower side of the supporting frame. The device is scientific and reasonable in structural design and uniform in extrusion force, the upper clamping plate and the lower clamping plate can be always kept parallel, damage to equipment is avoided, after screws are loosened, the other four first nuts are manually loosened, disassembly and assembly work can be rapidly completed, the maintenance efficiency and quality are improved, and the maintenance cost is reduced. Moreover, the labor intensity of maintainers is reduced, and a solid foundation is laid for timely power transmission of the rectifier cabinet.

Description

Technical Field

[0001] The utility model relates to the technical field of plate heat exchanger maintenance equipment, in particular to a plate heat exchanger maintenance tool. Background Art

[0002] The structure of the plate heat exchanger consists of gaskets, compression plates (movable end plates, fixed end plates) and frames (upper and lower guide rods, front pillars). The plates are sealed and diverted by sealing gaskets to separate the cold and hot fluid channels. In addition, when the plates are assembled, the two groups are arranged alternately, and the rubber sealing strips are fixed between the plates with adhesives. Its function is to prevent the leakage of the main and auxiliary water and to form a narrow mesh flow channel between the two plates. The heat exchange plates are pressed into various corrugated shapes to increase the area and rigidity of the heat exchange plates, and to make the cold and hot water form turbulence at low flow rates to achieve the effect of enhancing heat transfer. After two years of use, the plates on the secondary water side of the plate heat exchanger began to scale, the flow gradually narrowed, the heat exchange effect decreased, and it could not meet the operating requirements of the rectifier cabinet. It needed to be disassembled and replaced. When opening the plate heat exchanger, the bolts must be loosened to the same degree (when opening, the movable clamping plate should remain straight and move), the clamping bolts were removed from the top, and the movable clamping plate was lifted to the ground, and the plates could be inspected and disassembled; during the assembly process, the fixed clamping plate and the movable clamping plate were parallel up and down. Therefore, it is necessary to measure the clamping dimensions of the upper and lower plates before clamping. During the clamping process, the clamping should be repeatedly measured and clamped step by step until the specified clamping dimensions are reached.

[0003] Since the plates generate elastic force after compression, it is very difficult to disassemble them using a wrench. A force rod is required. It takes four people 4 hours to disassemble a single set of heat exchanger plates. During this period, two people tighten the diagonal bolts, which will cause uneven extrusion, deformation and water leakage of the rubber pads, and time-consuming rework. This not only increases the labor intensity of maintenance personnel, but also buries safety hazards for timely power supply of the rectifier cabinet. To this end, we propose a plate heat exchanger maintenance tool. Utility Model Content

[0004] The purpose of the utility model is to provide a plate heat exchanger maintenance tool to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plate heat exchanger maintenance tool, including a heat exchanger frame body, the heat exchanger frame body includes an upper clamping plate, a lower clamping plate and a plate, the upper clamping plate and the lower clamping plate are correspondingly provided with connecting holes and guide holes, a short screw is installed in the connecting hole, and the two ends of the short screw are connected with a first nut, a long screw is installed in the guide hole, and the two ends of the long screw are connected with a second nut, a support frame is sleeved on the second nut, and a hydraulic jack is arranged on the lower side of the support frame.

[0006] In the above solution, the number of the plates is 93.

[0007] In the above solution, a gasket is arranged below the upper clamping plate.

[0008] In the above solution, the support frame is a mountain-shaped support frame, and a through hole is opened on the support frame.

[0009] In the above solution, the bottom end of the hydraulic jack abuts against the surface of the upper clamping plate.

[0010] In the above solution, a level bubble is provided on the support frame.

[0011] In the above solution, washers are provided on the inner sides of the first nut and the second nut.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the plate heat exchanger maintenance tooling has a simple and reasonable structural design and strong practicality. By arranging a long screw, a second nut, a support frame and two hydraulic jacks for use, the two long screws are simultaneously passed through the upper clamping plate, the lower clamping plate and the force-bearing support frame during use, and the hydraulic jack is supported on the bottom plane of the mountain-shaped support frame. After manually adjusting the balance of the mountain-shaped support frame, the second nut on the long screw is tightened, and then two people simultaneously operate the hydraulic jack to extrude the plate with uniform extrusion force. This process can ensure that the upper clamping plate and the lower clamping plate are always kept parallel to avoid damage to the equipment. After the screws are loosened, the remaining four first nuts are manually loosened, and the disassembly and assembly work can be completed quickly, which not only improves the maintenance efficiency and quality, but also reduces the labor intensity of maintenance personnel, and at the same time lays a solid foundation for timely power supply of the rectifier cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model.

[0014] Figure 2 This is a schematic diagram of the support frame connection structure of the utility model.

[0015] Figure 3 It is a schematic diagram of the surface structure of the upper clamping plate of the utility model.

[0016] In the figure: 1 heat exchanger frame body, 11 upper clamping plate, 12 lower clamping plate, 13 plate, 14 connecting hole, 15 guide hole, 16 short screw, 17 first nut, 18 long screw, 19 second nut, 2 support frame, 21 hydraulic jack, 22 level bubble. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3 The utility model provides a technical solution: a plate heat exchanger maintenance tool, including a heat exchanger frame body 1, the heat exchanger frame body 1 includes an upper clamping plate 11, a lower clamping plate 12 and a plate 13, the upper clamping plate 11 and the lower clamping plate 12 are correspondingly provided with connecting holes 14 and guide holes 15, a short screw 16 is installed in the connecting hole 14, and the two ends of the short screw 16 are connected with a first nut 17, a long screw 18 is installed in the guide hole 15, and the two ends of the long screw 18 are connected with a second nut 19, the second nut 19 is sleeved with a support frame 2, and a hydraulic jack 21 is provided at the lower side of the support frame 2. When in use, the two long screws 18 are simultaneously passed through the upper clamping plate 11, the lower clamping plate 12 and the load-bearing support frame 2, and the hydraulic jack 21 is supported on the bottom plane of the U-shaped support frame. After manually adjusting the balance of the U-shaped support frame, the second nut 19 on the long screw 18 is tightened, and then two people simultaneously operate the hydraulic jack 21 to extrude the plate, and the extrusion force is uniform.

[0019] This process can ensure that the upper clamping plate 11 and the lower clamping plate 12 always remain parallel to avoid damage to the equipment. No force rod is required, and the disassembly efficiency of a single set of heat exchanger plates is higher. It solves the problem of uneven extrusion when two people tighten the diagonal bolts during use of ordinary maintenance tools, which can easily lead to deformation and leakage of the rubber pads, resulting in time-consuming rework.

[0020] In the above solution, the number of the plates 13 is 93. The interior of the frame body is formed by stacking metal plates with a certain corrugated shape, and thin rectangular channels are formed between the plates, and heat exchange is performed through the plates.

[0021] In the above solution, a gasket is arranged below the upper clamping plate 11. Specifically, the gasket is arranged at the corresponding connection between the upper clamping plate 11, the lower clamping plate 12 and the plate 13 to play a buffering effect.

[0022] In the above solution, the support frame 2 is a mountain-shaped support frame, and a through hole is opened on the support frame 2. The long screw 18 passes through the through hole to connect the support frame 2.

[0023] In the above solution, the bottom end of the hydraulic jack 21 abuts against the surface of the upper clamping plate 11. Under normal conditions, the plurality of first nuts 17 are locked on the short screw rods 16 under the elastic force of the plate.

[0024] In the above scheme, the support frame 2 is provided with a level bubble 22. The level bubble 22 is used in conjunction with the support frame 2, and the user determines the horizontal state of the support frame 2 by observing the state of the level bubble 22, so that the horizontal state of the upper clamping plate 11 can be easily maintained, ensuring that the upper clamping plate 11 and the lower clamping plate 12 are always kept parallel.

[0025] In the above solution, washers are disposed inside the first nut 17 and the second nut 19 .

[0026] Working principle:

[0027] The plate heat exchanger maintenance tooling is used in conjunction with a long screw 18, a second nut 19, a support frame 2 and two hydraulic jacks 21. When in use, the two long screws 18 are simultaneously passed through the upper clamping plate 11, the lower clamping plate 12 and the force-bearing support frame 2, and the hydraulic jack 21 is supported on the bottom plane of the mountain-shaped support frame. After manually adjusting the balance of the mountain-shaped support frame, the second nut 19 on the long screw 18 is tightened, and then two people simultaneously operate the hydraulic jack 21 to squeeze the plate with uniform squeezing force. This process can ensure that the upper clamping plate 11 and the lower clamping plate 12 are always kept parallel to avoid damage to the equipment. After the screws are loosened, the remaining four first nuts 17 are manually loosened, and the disassembly and assembly work can be completed quickly. Subsequently, the hydraulic jack 21 is removed to realize the disassembly and maintenance of the heat exchanger frame structure. The cooperation of the above-mentioned tooling equipment not only improves the maintenance efficiency and quality, but also reduces the labor intensity of the maintenance personnel, and at the same time lays a solid foundation for the timely power supply of the rectifier cabinet.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plate heat exchanger maintenance tool, comprising a heat exchanger frame body (1), characterized in that: The heat exchanger frame body (1) comprises an upper clamping plate (11), a lower clamping plate (12) and a plate (13); the upper clamping plate (11) and the lower clamping plate (12) are provided with connecting holes (14) and guide holes (15) respectively; a short screw (16) is installed in the connecting hole (14); both ends of the short screw (16) are connected to a first nut (17); a long screw (18) is installed in the guide hole (15); both ends of the long screw (18) are connected to a second nut (19); a support frame (2) is sleeved on the second nut (19); a hydraulic jack (21) is provided on the lower side of the support frame (2).

2. The plate heat exchanger maintenance tool according to claim 1, characterized in that: The number of the plates (13) is 93.

3. The plate heat exchanger maintenance tool according to claim 1, characterized in that: A gasket is arranged below the upper clamping plate (11).

4. The plate heat exchanger maintenance tool according to claim 1, characterized in that: The support frame (2) is a mountain-shaped support frame, and a through hole is provided on the support frame (2).

5. The plate heat exchanger maintenance tool according to claim 1, characterized in that: The bottom end of the hydraulic jack (21) abuts against the surface of the upper clamping plate (11).

6. The plate heat exchanger maintenance tool according to claim 1, characterized in that: The support frame (2) is provided with a level bubble (22).

7. The plate heat exchanger maintenance tool according to claim 1, characterized in that: Washers are arranged on the inner sides of the first nut (17) and the second nut (19).

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