CN220162343U - Quick disassembly tool for large-scale plate heat exchanger - Google Patents

Abstract

The utility model discloses a rapid disassembly tool for a large-scale plate heat exchanger, which solves the problem of how to design a tool for conveniently disassembling and assembling the plate heat exchanger; a front lower extension screw (12) is arranged between the front side of the fixed clamping plate (1) and the front side of the movable clamping plate (2), the right end of the front lower extension screw (12) is overhung and extends to the right side of the movable clamping plate (2), a rear lower extension screw (13) is arranged between the rear side of the fixed clamping plate (1) and the rear side of the movable clamping plate (2), the right end of the rear lower extension screw (13) is overhung and extends to the right side of the movable clamping plate (2), a lower end plate (14) is connected between the right end of the front lower extension screw (12) and the rear end of the rear lower extension screw (13), and a lower jack (15) is arranged between the left vertical face of the lower end plate (14) and the right vertical face of the movable clamping plate; not only ensuring that the bolt and the nut are not tripped.

Description

Quick disassembly tool for large-scale plate heat exchanger

Technical Field

The utility model relates to a mechanical disassembly tool, in particular to a rapid disassembly tool for a large-scale plate heat exchanger.

Background

The plate heat exchanger is a high-efficiency heat exchanger formed by stacking a plurality of metal plates with certain corrugated shapes, and the plate heat exchanger stands out from a plurality of heat exchangers by virtue of a specific working principle and a unique composition structure; the plate heat exchanger consists of a group of metal plates, and four corner holes are formed in the plates for passing through cold and hot media. When in assembly, the plates A and B are alternately arranged, a reticular channel is formed between the plates, the sealing gasket seals the cold and hot media in the heat exchanger, and simultaneously, the cold and hot media are reasonably separated from each other without mixing; the cold and hot fluid flows in the channel at intervals and can flow reversely or forward as required, and the cold and hot fluid exchanges heat through the plate wall in the flowing process, so that the required effect is achieved; in the practical use of the plate heat exchanger in power plants and other fields, the surface of the metal plate can be scaled or a large amount of sediment and oily suspended matters in water are adhered to the surface of the metal plate due to long-time operation, so that the cooling effect is reduced, and the metal plate needs to be cleaned regularly; the heat exchange plates are cleaned after being completely disassembled, after the cleaning is finished, the sealing gasket is reinstalled, the heat exchange plates are compressed by the plate wall exchange and then are adjusted to a working state, so that the sealing among the heat exchange plates is tight, and no leakage exists; because the plate heat exchanger is formed by stacking and compressing metal plates, the compression amount is large, the bolts on the plate wall are subjected to large stress, the bolts and nuts of the plate wall (movable clamping plate) are extremely easy to damage in disassembly and assembly, and the leakage phenomenon is caused by the fact that the sealing gasket is not tight, so that the maintenance cost and the construction period are increased; taking a 350MW unit power plant as an example, the unit uses a plate heat exchanger with the height of 2 meters and the width of 0.8 meter, the distance between the wall exchanging parts of the plate heat exchanger is 57 cm in a working state, the heat exchanging plate is required to be overhauled and replaced, the bolts at the wall exchanging (movable clamping plate) ends of the plate are required to be loosened, the direct distance between the two plate wall exchanging parts is loosened from 57 cm to about 1 meter, the compressed stress can be completely released, the heat exchanger is thoroughly opened, the heat exchanging plate is smoothly taken out, and the heat exchanging plate is cleaned. On the contrary, during installation, the distance between the two plate wall-changing plates is adjusted to 57 cm by adjusting the nuts continuously from the bearing of the two plate wall-changing plates (the distance is about 1 m), so that the heat exchange of the heat exchanger is ensured to be normal, the heat exchange of the heat exchanger is ensured to be free from leakage phenomenon, and how to design a tool which is convenient for disassembling and assembling the plate heat exchanger becomes a problem to be solved on site.

Disclosure of Invention

The utility model provides a rapid disassembly tool for a large-scale plate heat exchanger, which solves the technical problem of how to design a tool for conveniently disassembling and assembling the plate heat exchanger.

The utility model solves the technical problems by the following technical proposal:

the quick disassembly tool for the large-sized plate heat exchanger comprises a plate heat exchanger, an upper end plate, a lower end plate, an upper jack and a lower jack, wherein the plate heat exchanger consists of a fixed clamping plate, a movable clamping plate, heat exchange plates and opposite-pulling screws; a rear lower extension screw and a rear upper extension screw are respectively arranged between the rear side of the fixed clamping plate and the rear side of the movable clamping plate at intervals, the right end of the rear lower extension screw is overhanging and extends to the right side of the movable clamping plate, and the right end of the rear upper extension screw is overhanging and extends to the right side of the movable clamping plate; a lower end plate is connected between the right end of the front lower extension screw and the rear end of the rear lower extension screw, and a lower jack is arranged between the left vertical face of the lower end plate and the right vertical face of the movable clamping plate; an upper end plate is arranged between the right end of the front upper extension screw and the right end of the rear upper extension screw, and an upper jack is arranged between the left vertical face of the upper Fang Duanban and the right vertical face of the movable clamping plate.

A fixed plate upper jacking nut is arranged between the fixed clamping plate and the left end of the opposite-pulling screw rod, and a movable plate upper jacking nut is arranged between the movable clamping plate and the right end of the opposite-pulling screw rod; a hot medium inlet flange and a cold medium inlet flange are respectively arranged on the left vertical face of the fixed clamping plate, and a hot medium outlet flange and a cold medium outlet flange are respectively arranged on the right vertical face of the movable clamping plate.

The utility model changes the traditional method of using the large hammer to strike the bolt of the plate wall (the movable clamping plate) in the disassembly work of the plate heat exchanger, not only ensures that the bolt and the nut do not have the tripping condition, but also ensures that the bolt is not uniformly stressed to leak when the plate is replaced, shortens the working time, saves time and labor, and improves the working efficiency.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Description of the embodiments

The utility model is described in detail below with reference to the attached drawing figures:

the quick disassembly tool for the large-scale plate heat exchanger comprises a plate heat exchanger, an upper end plate 18, a lower end plate 14, an upper jack 19 and a lower jack 15, wherein the plate heat exchanger consists of a fixed clamping plate 1, a movable clamping plate 2, heat exchange plates 4 and opposite-pulling screws 3, the heat exchange plates 4 stacked together are arranged between the fixed clamping plate 1 and the movable clamping plate 2, opposite-pulling screws 3 are arranged at intervals between the front side of the fixed clamping plate 1 and the front side of the movable clamping plate 2, opposite-pulling screws 3 are arranged at intervals between the rear side of the fixed clamping plate 1 and the rear side of the movable clamping plate 2, two groups of opposite-pulling screws 3 stack the heat exchange plates 4 together, sealing rubber strips 9 are arranged between two adjacent heat exchange plates, front-side lower extension screws 12 and front-side upper extension screws 16 are respectively arranged between the front side of the fixed clamping plate 1 and the front side of the movable clamping plate 2 at intervals, the right ends of the front-side lower extension screws 12 are protruded to the right sides of the movable clamping plate 2, and the right ends of the front-side upper extension screws 16 are protruded to the right sides of the movable clamping plates 2; a rear lower extension screw 13 and a rear upper extension screw 17 are respectively arranged between the rear side of the fixed clamping plate 1 and the rear side of the movable clamping plate 2 at intervals, the right end of the rear lower extension screw 13 overhangs to the right side of the movable clamping plate 2, and the right end of the rear upper extension screw 17 overhangs to the right side of the movable clamping plate 2; a lower end plate 14 is connected between the right end of the front lower extension screw 12 and the rear end of the rear lower extension screw 13, and a lower jack 15 is arranged between the left vertical surface of the lower end plate 14 and the right vertical surface of the movable clamping plate 2; an upper end plate 18 is provided between the right end of the front upper extension screw 16 and the right end of the rear upper extension screw 17, and an upper jack 19 is provided between the left side elevation of the upper end plate 18 and the right side elevation of the movable clamp plate 2.

A fixed plate upper jacking nut 10 is arranged between the fixed clamping plate 1 and the left end of the opposite-pulling screw rod 3, and a movable plate upper jacking nut 11 is arranged between the movable clamping plate 2 and the right end of the opposite-pulling screw rod 3; a hot medium inlet flange 5 and a cold medium inlet flange 6 are respectively arranged on the left side vertical surface of the fixed clamping plate 1, and a hot medium outlet flange 8 and a cold medium outlet flange 7 are respectively arranged on the right side vertical surface of the movable clamping plate 2.

The upper end plate 18 and the lower end plate 14 are respectively manufactured by steel plates with the thickness of 25 mm; when the plate heat exchanger is disassembled, the manufactured upper end plate 18 is installed between the right end of the front upper extension screw 16 and the right end of the rear upper extension screw 17, the upper end plate 18 and the movable clamping plate 2 are kept parallel to each other, meanwhile, the lower end plate 14 is installed between the right end of the front lower extension screw 12 and the rear end of the rear lower extension screw 13, the upper end plate 18 and the movable clamping plate 2 are kept parallel to each other, the upper jack 19 is placed at the center position of the upper end plate 18, and the left end of the upper jack 19 is propped against the right vertical surface of the movable clamping plate 2; a lower jack 15 is placed in the center of the lower end plate 14, so that the left end of the lower jack 15 is propped against the right side elevation of the movable clamping plate 2; the lengths of the two jacks are adjusted according to the proper distance until the end plate and the plate wall change (movable clamping plate) are uniformly stressed, and the phenomenon of tightening and loosening does not occur; then, two operators cooperate, uniformly press the two jacks at the same time, measure the extending length of the jacks at the same time and record, observe whether the locking nuts on the four lengthened screws are loosened, if the loosening phenomenon occurs, the locking nuts of the opposite-pull screw 3 are loosened backwards, and the measurement records; repeating the steps until the compressed heat exchange plates 4 reach the maximum expansion distance, and finally, dismantling the jack and the end plate; therefore, the plate heat exchanger can be quickly dismantled under the condition of not damaging the bolts of the end plates; cleaning scale of the metal sheet or adhering a large amount of sediment and oily suspended matters in water, and then carrying out reloading according to the opposite procedure; when the plate is assembled back, the cleaned plate is firstly and completely provided with sealing gaskets, then the sealing gaskets are hung in sequence, then the plate wall (movable clamping plate) is pushed to have a fastening state, after the plate wall is completed, the plate heat exchanger is subjected to a 1.25-time compression test twice, and the plate heat exchanger can be put into operation after being qualified.

Claims (2)

1. The utility model provides a quick dismantlement frock of large-scale plate heat exchanger, including plate heat exchanger, upper end board (18), below end board (14), upper jack (19) and below jack (15), plate heat exchanger is by fixed clamp plate (1), movable clamp plate (2), heat transfer slab (4) and to drawing screw rod (3) constitution, be provided with between fixed clamp plate (1) and movable clamp plate (2) and fold heat transfer slab (4) together, between fixed clamp plate (1) front side and movable clamp plate (2) front side, the interval is provided with to drawing screw rod (3), between fixed clamp plate (1) rear side and movable clamp plate (2) rear side, the interval is provided with to drawing screw rod (3), two sets of to drawing screw rod (3) fold each heat transfer slab (4) together, be provided with joint strip (9) between adjacent two heat transfer slab, characterized in that, between fixed clamp plate (1) front side and movable clamp plate (2) front side respectively, the interval is provided with front side lower part and extension screw rod (16) top extension screw rod (16) to the upper end of stretching out to the right side of extension screw rod (2); a rear lower extension screw (13) and a rear upper extension screw (17) are respectively arranged between the rear side of the fixed clamping plate (1) and the rear side of the movable clamping plate (2) at intervals, the right end of the rear lower extension screw (13) overhangs the right side of the movable clamping plate (2), and the right end of the rear upper extension screw (17) overhangs the right side of the movable clamping plate (2); a lower end plate (14) is connected between the right end of the front lower extension screw (12) and the rear end of the rear lower extension screw (13), and a lower jack (15) is arranged between the left vertical surface of the lower end plate (14) and the right vertical surface of the movable clamping plate (2); an upper end plate (18) is arranged between the right end of the front upper extension screw (16) and the right end of the rear upper extension screw (17), and an upper jack (19) is arranged between the left vertical surface of the upper end plate (18) and the right vertical surface of the movable clamping plate (2).

2. The quick disassembly tool for the large-scale plate heat exchanger according to claim 1, wherein a fixed plate upper jacking nut (10) is arranged between the fixed clamping plate (1) and the left end of the opposite-pulling screw rod (3), and a movable plate upper jacking nut (11) is arranged between the movable clamping plate (2) and the right end of the opposite-pulling screw rod (3); a hot medium inlet flange (5) and a cold medium inlet flange (6) are respectively arranged on the left side vertical face of the fixed clamping plate (1), and a hot medium outlet flange (8) and a cold medium outlet flange (7) are respectively arranged on the right side vertical face of the movable clamping plate (2).