CN218600380U - Novel low temperature heat exchanger anticorrosion device - Google Patents

Abstract

The utility model discloses a novel low-temperature heat exchanger anti-corrosion device, which comprises a bottom steel structure and a support frame; the lower end of the supporting frame is fixedly connected with a plurality of bottom steel structures; the upper end of the supporting frame is fixedly connected with a heat exchanger bottom plate; the expansion guide frame is used for limiting the four directions of the low-temperature heat exchanger to be heated and expanded by two, so that the expansion of the low-temperature heat exchanger can be heated, expanded and displaced only along two directions which are not limited; the header end pipeline and the blind end pipeline are integrally welded with the flue plate, and a wall bushing and a blind end pipeline sealing box are omitted; the low-temperature heat exchanger and the flue form a whole, nonmetal expansion joints are arranged at the front and the back of the low-temperature heat exchanger, a bottom plate of the low-temperature heat exchanger is in sliding connection with a lower support, and an expansion guide frame is arranged to ensure that the whole new low-temperature heat exchanger can be expanded freely; the problem of corrosion of the blind end pipeline of the conventional low-temperature heat exchanger can be solved, and the overall corrosion resistance of the low-temperature heat exchanger is improved.

Description

A New Anticorrosion Device for Low Temperature Heat Exchanger

technical field

The utility model relates to the field of low-temperature heat exchangers, in particular to a novel anti-corrosion device for low-temperature heat exchangers.

Background technique

Low temperature heat exchanger is a kind of heat exchanger, which is a device that transfers part of the heat of hot fluid to cold fluid, also known as heat exchanger; it is widely used in thermal power generation, waste power generation, chemical industry and other industries.

Anti-corrosion refers to the practical technology of using physical and chemical means to effectively chemically corrode and electrochemically corrode metal and non-metallic materials such as equipment and structures, and prolong the service life of machinery, equipment and building structures; anti-corrosion technology can effectively prolong the service life of the equipment.

The low temperature heat exchanger can be arranged in front of the electrostatic precipitator, after the electrostatic precipitator and after the induced draft fan according to its different needs. The header pipe of the low temperature heat exchanger is welded with the wall plate, and the blind end pipe is provided with a wall pipe to ensure that the entire pipe The free expansion of the blind end pipe is provided with a sealing box to ensure the sealing of the device. Because the flue gas in the blind end pipe sealing box is easy to accumulate and condense to form low-temperature acid dew corrosion, resulting in corrosion leakage of the blind end pipe of the low-temperature heat exchanger, and the low-temperature heat exchanger is out of operation. , is not conducive to energy saving and consumption reduction.

Utility model content

The purpose of the utility model is to solve the above technical problems and provide a new anti-corrosion device for low temperature heat exchangers.

In order to achieve the above object, the utility model is realized by adopting the following technical solutions;

The technical solution adopted by the utility model to solve the technical problem is: a new anti-corrosion device for low temperature heat exchanger described in the utility model, including a bottom steel structure and a support frame; the lower end of the support frame is fixedly connected with multiple a bottom steel structure; the upper end of the supporting frame is fixedly connected to a heat exchanger bottom plate; the low temperature heat exchanger is fixedly connected to the heat exchanger bottom plate; one side of the low temperature heat exchanger is fixedly connected to a first sealing box The upper end of the bottom steel structure corresponds to the lower end of the low-temperature heat exchanger and is symmetrically fixed with an expansion guide frame; the low-temperature heat exchanger is symmetrically sleeved with blind-end pipes; The box-end pipe; the two sides of the blind-end pipe are symmetrically fixed with flue plates; the two ends of the blind-end pipe are sealed and fixed with a second sealing box; the two ends of the low-temperature heat exchanger are sleeved with expansion Festival.

Further, the fixing point between the bottom plate of the heat exchanger and the low-temperature heat exchanger is at the center of the low-temperature heat exchanger.

Further, the expansion guide frame is symmetrically located on both sides of the cryogenic heat exchanger; the expansion guide frame is made of angle steel.

Further, the expansion joint is made of non-metal; the thickness of the flue plate is 20mm.

Further, a plurality of expansion guide frames are fixed symmetrically to the corresponding flue plates on the low temperature heat exchanger.

A new anti-corrosion device for a low temperature heat exchanger provided by the utility model has the following beneficial effects:

1. The utility model forms a whole through the mutual solidification of the bottom steel structure and the supporting frame, so that the structural strength is large and the support is stable; through the expansion guide frame, two of the four directions of the low-temperature heat exchanger are limited by heat expansion, so that the low-temperature heat exchanger The expansion of the heater can only be thermally expanded and displaced in two unrestricted directions; through the integral welding of the header end pipe and the blind end pipe with the flue plate, the wall bushing and the blind end pipe seal box are cancelled; low temperature heat exchange The low-temperature heat exchanger and the flue form a whole. Non-metallic expansion joints are arranged at the front and rear of the low-temperature heat exchanger. The bottom plate of the low-temperature heat exchanger is connected with the lower support by sliding, and an expansion guide frame is set to ensure that the new low-temperature heat exchanger can expand freely as a whole; The blind-end pipe sealing box can solve the corrosion problem of the blind-end pipe of the low-temperature heat exchanger and improve the overall corrosion resistance of the low-temperature heat exchanger;

2. The utility model fixes the central position of the low-temperature heat exchanger and the bottom plate of the heat exchanger, and other positions are not fixed, so that when the low-temperature heat exchanger is heated and deformed, the central position of the low-temperature heat exchanger and the bottom plate of the heat exchanger is always Keep the alignment so that the thermal expansion of the low temperature heat exchanger is displaced from the center of the bottom plate of the heat exchanger to both ends, so that the deformation distance of the low temperature heat exchanger can be accurately measured.

Description of drawings

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail;

Figure 1 is a schematic diagram of the front view structure of a new anti-corrosion device for low temperature heat exchangers;

Fig. 2 is a top view structural schematic diagram of a novel cryogenic heat exchanger anti-corrosion device;

Fig. 3 is a side view sectional structural schematic diagram of a novel low temperature heat exchanger anti-corrosion device;

FIG. 4 is a schematic diagram of an enlarged structure at point A in FIG. 1 .

Explanation of symbols in the figure: 1. Bottom steel structure; 2. Support frame; 3. Low temperature heat exchanger; 4. Heat exchanger bottom plate; 5. First sealing box; 6. Expansion guide frame; 7. Header end pipe; 8. Blind end pipe; 9. Flue plate; 10. Second sealing box; 11. Expansion joint.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than Full examples. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that all directional indications (such as up-down-left-right-front-back...) in the embodiments of the present utility model are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection may be a direct connection or an indirect connection.

Please refer to Figures 1-4, a new anti-corrosion device for low-temperature heat exchangers, including a bottom steel structure 1 and a support frame 2; the lower end of the support frame 2 is fixedly connected with multiple bottom steel structures 1; the A heat exchanger bottom plate 4 is fixedly connected to the upper end of the support frame 2; a low-temperature heat exchanger 3 is fixedly connected to the heat exchanger bottom plate 4; a first sealing box 5 is fixedly connected to one side of the low-temperature heat exchanger 3; The lower end of the bottom steel structure 1 is symmetrically fixed with an expansion guide frame 6 corresponding to the upper end of the low-temperature heat exchanger 3; the low-temperature heat exchanger 3 is symmetrically sleeved with blind-end pipes 8; between the blind-end pipes 8 The header end pipe 7 is connected and fixed; the two sides of the blind end pipe 8 are symmetrically fixed with a flue plate 9; the two ends of the blind end pipe 8 are sealed and fixed with a second sealing box 10; the low temperature Both ends of the heat exchanger 3 are sleeved with expansion joints 11; when working, the bottom steel structure 1 and the supporting frame 2 are fixed to form a whole, which makes the structure strong and stable; the expansion guide frame 6 makes the low-temperature heat exchanger The thermal expansion of the four directions of 3 is limited to two, so that the expansion of the cryogenic heat exchanger 3 can only be displaced along the two unrestricted directions of thermal expansion; The plate 9 is integrally welded, and the wall casing and the blind-end pipe sealing box are cancelled; the low-temperature heat exchanger 3 and the flue form an integral body, and non-metallic expansion joints 11 are arranged before and after the low-temperature heat exchanger 3, and the bottom plate and the lower part of the low-temperature heat exchanger 3 The support adopts a sliding connection, and an expansion guide frame 6 is set to ensure that the new low-temperature heat exchanger 3 can expand freely as a whole; it can solve the corrosion problem of the blind-end pipe 8 of the low-temperature heat exchanger 3 at present, and improve the overall corrosion resistance of the low-temperature heat exchanger 3 performance.

The fixed connection point between the heat exchanger bottom plate 4 and the low temperature heat exchanger 3 is at the center of the low temperature heat exchanger 3; during operation, the center position of the low temperature heat exchanger 3 and the heat exchanger bottom plate 4 is fixed, and other positions are not fixed. Therefore, when the low-temperature heat exchanger 3 is heated and deformed, the central position of the low-temperature heat exchanger 3 and the heat exchanger bottom plate 4 is always aligned, so that the thermal expansion of the low-temperature heat exchanger 3 starts from the center of the heat exchanger bottom plate 4 The position is displaced toward both ends, so that the deformation distance of the cryogenic heat exchanger 3 can be accurately measured.

The expansion guide frame 6 is symmetrically located on both sides of the cryogenic heat exchanger 3; the expansion guide frame 6 is made of angle steel; during work, the expansion guide frame 6 is made of angle steel, which can be conveniently fixed on one side and the other side It is used to block the deformation and displacement of the low-temperature heat exchanger 3, so that the structure is stable and convenient to fix; through the symmetrically arranged expansion guide frame 6, the left and right displacement limit positions of the low-temperature heat exchanger 3 are limited, thereby ensuring that no deformation distance occurs, thereby The deformation in four directions of the cryogenic heat exchanger 3 is limited to two directions.

The expansion joint 11 is made of non-metal; the thickness of the flue plate 9 is 20 millimeters; when working, the expansion joint 11 made of non-metal will not rust in long-term use, ensuring The service life of stable operation.

The low temperature heat exchanger 3 is symmetrically fixed with a plurality of expansion guide frames 6 corresponding to the flue plate 9; during operation, two sets of four expansion guide frames 6 are fixed on both sides of the flue plate 9, so that the flue The plate 9 and the blind-end pipe 8 are restricted left and right in the thermal expansion direction, so that they can only move forward and backward, so that the expansion can move along the designed direction.

With the above scheme, when the utility model is in use, the bottom steel structure 1 and the support frame 2 are fixed together to form a whole, so that the structural strength is strong and the support is stable; the four directions of the low-temperature heat exchanger 3 are heated and expanded by the expansion guide frame 6 Two are restricted, so that the expansion of the low temperature heat exchanger 3 can only be heated and expanded in two unrestricted directions; through the integral welding of the header end pipe 7 and the blind end pipe 8 with the flue plate 9, the wear-through The wall casing and the blind-end pipe seal box; the low-temperature heat exchanger 3 and the flue form an integral body, and non-metallic expansion joints 11 are arranged before and after the low-temperature heat exchanger 3 ; The guide frame 6 ensures that the new low-temperature heat exchanger 3 can expand freely as a whole; it can solve the corrosion problem of the blind-end pipe 8 of the current low-temperature heat exchanger 3 and improve the overall corrosion resistance of the low-temperature heat exchanger 3; through the low-temperature heat exchanger 3 and the center position of the heat exchanger bottom plate 4 are fixed, and other positions are not fixed, so that when the low temperature heat exchanger 3 is heated and deformed, the center positions of the low temperature heat exchanger 3 and the heat exchanger bottom plate 4 are always aligned, thereby realizing The thermal expansion of the low-temperature heat exchanger 3 is displaced from the center position of the heat exchanger bottom plate 4 to both ends, so that the deformation distance of the low-temperature heat exchanger 3 can be accurately measured; the expansion guide frame 6 is made of angle steel, that is, It is convenient to fix on one side, and the other side is used to block the deformation and displacement of the low-temperature heat exchanger 3, so that the structure is stable and convenient to fix; through the symmetrically arranged expansion guide frame 6, the limit position of the left and right displacement of the low-temperature heat exchanger 3 is limited, thereby ensuring There will be no deformation distance, so that the deformation of the four directions of the cryogenic heat exchanger 3 is limited to two directions; through the expansion joint 11 made of non-metal, it will not rust during long-term use, ensuring stability The service life of the work; two sets of four expansion guide frames 6 are fixed on both sides of the flue plate 9, so that the left and right of the thermal expansion direction of the flue plate 9 and the blind end pipe 8 are limited, so that they can only be along the Move back and forth so that the inflation moves in the designed direction.

In the description of this specification, descriptions referring to the terms "one embodiment", "example", "specific example" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in the description of the present invention. In at least one embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model.

Claims (5)

1. A novel anti-corrosion device for a low temperature heat exchanger, characterized in that it comprises a bottom steel structure (1) and a support frame (2); the lower end of the support frame (2) is affixed with a plurality of bottom steel structures ( 1); the upper end of the support frame (2) is fixedly connected with a heat exchanger base plate (4); the low temperature heat exchanger (3) is fixedly connected with the heat exchanger base plate (4); the low temperature heat exchanger One side of (3) is affixed with a first sealing box (5); the upper end of the bottom steel structure (1) is symmetrically affixed with an expansion guide frame (6) corresponding to the lower end of the low-temperature heat exchanger (3); The low-temperature heat exchanger (3) is symmetrically sleeved with blind-end pipes (8); the blind-end pipes (8) are communicated and fixedly connected with header-end pipes (7); the blind-end pipes (8) A flue plate (9) is symmetrically fixed on both sides; a second sealing box (10) is sealed and fixed at both ends of the blind-end pipe (8); both ends of the low-temperature heat exchanger (3) are socketed There are expansion joints (11). 2. A new anti-corrosion device for a low temperature heat exchanger according to claim 1, characterized in that: the bottom plate of the heat exchanger (4) and the low temperature heat exchanger (3) are fixed at the low temperature heat exchanger ( 3) The center position. 3. A new anti-corrosion device for a low temperature heat exchanger according to claim 2, characterized in that: the expansion guide frame (6) is symmetrically located on both sides of the low temperature heat exchanger (3); Guide frame (6) is made by angle steel. 4. A new anti-corrosion device for a low temperature heat exchanger according to claim 3, characterized in that: the expansion joint (11) is made of non-metal; the thickness of the flue plate (9) is two ten millimeters. 5. A new anti-corrosion device for a low temperature heat exchanger according to claim 4, characterized in that: said low temperature heat exchanger (3) is symmetrically fixed with a plurality of expansion guides corresponding to the flue plate (9) rack (6).

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