Air heater heat preservation connecting structure

Abstract

The utility model discloses an air heater heat preservation connecting structure, include: connecting pipe, and the one end of connecting pipe is connected with the connecting flange, the heat preservation pipe is equipped with the inner tube in the heat preservation pipe, the compensation component is equipped in the heat preservation pipe, and the compensation component includes: fixed plate, first bellow, fixed flange, fixed block and spacing rod, the heat preservation component is equipped between connecting pipe and heat preservation pipe, and the heat preservation component includes: heat preservation cover, side plate, locating block and locating groove. The utility model realizes through the setting of compensation component, can cause the heat compensation of the expansion or shrinkage of metal to temperature variation, and the air sandwich layer between double -deck bellow can reduce the conduction of heat, reduce the loss of heat, and reduce the transmission of mechanical vibration, through heat preservation component, one aspect can full coverage flange and bellow, avoid partial heat dissipation, on the other hand can to heat preservation cover quick dismantlement.

Description

Technical Field

[0001] This utility model relates to the field of waste removal equipment technology, specifically to an air heater insulation connection structure. Background Technology

[0002] In industrial production, air heaters are widely used in processes such as drying, heat treatment, and chemical reactions to heat air or other gases to the required temperature and then deliver them to heat-using equipment. To ensure heating efficiency and reduce heat loss, an insulated connection structure is usually installed between the air heater and the external equipment to achieve efficient transmission of high-temperature airflow.

[0003] During use, the insulation connection structure of existing air heaters is prone to bolt breakage due to the expansion or contraction of the pipe metal caused by temperature changes. At the same time, existing insulation structures mostly use a single insulation layer or simple wrapping method, which has poor heat insulation effect, especially at the flange connection, where heat is easily lost through the gaps, resulting in energy waste and increased ambient temperature. Utility Model Content

[0004] The technical problem to be solved by this utility model embodiment is to provide an air heater insulation connection structure. By setting the compensation component, thermal compensation can be performed on the metal expansion or contraction caused by temperature changes. At the same time, the air gap between the double-layered corrugated pipes can reduce heat conduction, reduce heat loss, and reduce the transmission of mechanical vibration. Through the insulation component, on the one hand, the flange and corrugated pipe can be fully covered to avoid local heat dissipation, and on the other hand, the insulation cover can be quickly removed.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an air heater insulation connection structure, comprising: A connecting pipe for connecting to an air heater and other equipment, one end of which is connected to a connecting flange; Insulation pipe, used to transport hot air from air heater into the equipment, the insulation pipe is provided with an inner tube; A compensation component is disposed inside the insulation pipe to compensate for the expansion and contraction of the insulation pipe. The compensation component includes: a fixing plate, a first corrugated pipe, a fixing flange, fixing blocks, and a limiting rod. The insulation pipe is connected to both ends of the fixing plate. The first corrugated pipe is fixedly connected to one side of the fixing plate. The first corrugated pipe is connected to one end of the fixing flange for connection with the connecting flange. Three fixing blocks are connected to the outside of the fixing plate. A limiting rod is fixedly connected to one side of each fixing block. An insulation component is provided between the connecting pipe and the insulation pipe to insulate the connecting flange. The insulation component includes an insulation cover, side plates, positioning blocks, and positioning grooves. An insulation cover is provided on the outside of the connecting flange and the fixed flange. Two symmetrically arranged side plates are connected to the outside of the insulation cover. The bottom of one side plate is connected to a positioning block, and the bottom of the other side plate is provided with a positioning groove.

[0006] Furthermore, multiple support plates are connected between the insulation pipe and the inner pipe, and the space between the insulation pipe and the inner pipe is divided into multiple insulation layers by the multiple support plates, and the heat insulation medium in the insulation layer is a static air layer.

[0007] Furthermore, a second corrugated pipe is connected between the fixing plate and the fixing flange, and the second corrugated pipe is located outside the first corrugated pipe. Both the first and second corrugated pipes are made of 304 stainless steel.

[0008] Furthermore, the first and second corrugated pipes directly form an air gap to isolate the hot airflow inside the first corrugated pipe.

[0009] Furthermore, the connecting flange has multiple connecting holes, which are evenly distributed in a circular array. The fixing flange has multiple fixing holes, which correspond to the positions of the connecting holes. Connecting bolts are threaded into the connecting holes.

[0010] Furthermore, a space is provided between the connecting flange and the fixed flange to accommodate the thickness of the insulation cover. The insulation cover has multiple through holes corresponding to the positions of the connecting holes, and the connecting bolts pass through the connecting holes and through holes to be threadedly connected to the fixed holes.

[0011] Furthermore, the heat insulation cover is configured with a semi-cylindrical structure, and a first fitting hole and a second fitting hole are respectively opened on both sides of the heat insulation cover. The first fitting hole fits with the connecting pipe, the second fitting hole fits with the heat insulation pipe, and a rubber ring is provided inside the second fitting hole.

[0012] Furthermore, three limiting blocks are connected to the outside of the fixing plate, and the limiting blocks correspond to the positions of the fixing blocks. Limiting holes are opened on the limiting blocks, and one end of the limiting rod passes through the limiting hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up the compensation components, thermal compensation can be provided for the expansion or contraction of metal caused by temperature changes. At the same time, the air gap between the double-layered bellows can reduce heat conduction, reduce heat loss, and reduce the transmission of mechanical vibration. Furthermore, the insulation components can fully cover the flange and bellows to avoid local heat dissipation, and the insulation cover can be quickly removed. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0016] Figure 3 This is a half-sectional view of the overall structure of this utility model.

[0017] Figure 4 This is a side sectional view of the fixed flange structure of this utility model.

[0018] Figure 5 This is a side sectional view of the heat insulation cover structure of this utility model.

[0019] Figure 6 This is a schematic diagram of the thermal insulation cover structure of this utility model.

[0020] Figure 7 This is a schematic diagram of the heat insulation cover structure of this utility model from another angle.

[0021] Figure 8 This is a schematic diagram of the connecting flange structure of this utility model.

[0022] Figure 9 This is a schematic diagram of the insulation pipe structure of this utility model.

[0023] Figure 10 For the present utility model Figure 2 Enlarged view of point A in the image.

[0024] In the diagram: 1. Connecting pipe; 101. Connecting hole; 102. Connecting bolt; 103. Connecting flange; 2. Insulation pipe; 201. Inner pipe; 202. Support plate; 203. Insulation layer; 3. Fixing plate; 301. First corrugated pipe; 302. Second corrugated pipe; 303. Fixing flange; 304. Fixing hole; 4. Insulation cover; 401. Through hole; 402. Side plate; 403. Positioning block; 404. Positioning groove; 405. Rubber ring; 5. Fixing block; 501. Limiting rod; 502. Limiting block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] This application provides an air heater insulation connection structure that solves the problem of bolt breakage at the connection due to metal expansion or contraction caused by temperature changes, as well as the problem of heat loss at the flange connection.

[0027] By setting up the compensation components, thermal compensation can be provided for the expansion or contraction of metal caused by temperature changes. At the same time, the air gap between the double-layered bellows can reduce heat conduction, reduce heat loss, and reduce the transmission of mechanical vibration. The insulation components can fully cover the flange and bellows to avoid local heat dissipation, and the insulation cover 4 can be quickly removed.

[0028] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0029] Reference Figure 1 , Figure 2 As shown, an air heater insulation connection structure includes: a connecting pipe 1 for connecting to the air heater and other equipment, with a connecting flange 103 connected to one end of the connecting pipe 1; an insulation pipe 2 for conveying hot air from the air heater into the equipment, with an inner pipe 201 inside the insulation pipe 2; and a compensation component, located inside the insulation pipe 2, for compensating for the expansion and contraction of the insulation pipe 2, the compensation component including: a fixing plate 3, a first corrugated pipe 301, a fixing flange 303, a fixing block 5, and a limiting rod 501, with fixing plates 3 connected to both ends of the insulation pipe 2, and the first corrugated pipe 301 fixedly connected to one side of the fixing plate 3, with a fixing flange 103 connected to one end of the first corrugated pipe 301. The fixed flange 303 is used to connect to the connecting flange 103. Three fixing blocks 5 are connected to the outside of the fixing plate 3. A limit rod 501 is fixedly connected to one side of the fixing block 5. The insulation component is located between the connecting pipe 1 and the insulation pipe 2 and is used to insulate the connecting flange 103. The insulation component includes: insulation cover 4, side plate 402, positioning block 403 and positioning groove 404. The connecting flange 103 and the fixed flange 303 are provided with insulation cover 4 on the outside. Two symmetrically arranged side plates 402 are connected to the outside of the insulation cover 4. The bottom of one side plate 402 is connected to the positioning block 403, and the bottom of the other side plate 402 is provided with positioning groove 404.

[0030] When using the air heater, the fixed flange of the insulation pipe 2 can be aligned with the connecting flange 103 on the connecting pipe 1 and connected to each other, so that the insulation pipe 2 is connected to the connecting pipe 1 on the air heater. Similarly, the other end of the insulation pipe 2 can be connected to the connecting pipe 1 of the equipment that needs to be heated, thus completing the connection between the air heater and the equipment that needs to be heated.

[0031] Reference Figure 1 , Figure 2 As shown, multiple support plates 202 are connected between the insulation pipe 2 and the inner pipe 201, and the space between the insulation pipe 2 and the inner pipe 201 is divided into multiple insulation layers 203 by the multiple support plates 202. The heat insulation medium in the insulation layer 203 is a static air layer.

[0032] In use, the hot airflow generated by the air heater enters the insulation pipe 2 through the connecting pipe 1 and is discharged into the equipment to be heated from the connecting pipe 1 on the other side. When the hot airflow flows through the insulation pipe 2, the double-layer tubular structure of the insulation pipe 2 and the inner pipe 201 can prevent heat loss during the transport process. At the same time, the support plate 202 can provide support for the inner pipe 201 and the insulation pipe 2, and can also separate the space between the inner pipe 201 and the insulation pipe 2, so that the separated spaces are sealed to form a static air layer. The static air layer has a low thermal conductivity, which further reduces heat transfer and heat loss.

[0033] Reference Figure 3 , Figure 10 As shown, a second bellows 302 is connected between the fixed plate 3 and the fixed flange 303, and the second bellows 302 is located outside the first bellows 301. Both the first bellows 301 and the second bellows 302 are made of 304 stainless steel. The first bellows 301 and the second bellows 302 directly form an air gap to isolate the hot airflow inside the first bellows 301.

[0034] During operation, the temperature of the internal pipes of the air heater rises from room temperature to several hundred degrees Celsius, causing the metal pipes to expand linearly. The first corrugated pipe 301 and the second corrugated pipe 302 absorb this expansion through their elastic deformation, preventing excessive stress at the rigid connection points and thus avoiding breakage of the connecting bolt 102. Simultaneously, the mechanical vibrations generated by the fans, pumps, and other equipment in the air heater, if directly transmitted to the pipes, can cause loosening of the pipe connections. The corrugated structure of the first and second corrugated pipes 301 and 302 reduces the transmission of vibrations. Furthermore, the first and second corrugated pipes 301 and 302 provide positional compensation for the fixed flange 303 when the insulation pipe 2 is connected to the connecting pipe 1, preventing any error space between the insulation pipe 2 and the connecting pipe 1 during installation, which could prevent the insulation pipe 2 from failing to connect to the connecting pipe 1.

[0035] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the connecting flange 103 has multiple connecting holes 101, which are evenly distributed in a ring array. The fixed flange 303 has multiple fixing holes 304, which correspond to the positions of the connecting holes 101. The connecting holes 101 are threaded with connecting bolts 102. There is a space between the connecting flange 103 and the fixed flange 303 to accommodate the thickness of the insulation cover 4. The insulation cover 4 has multiple through holes 401 corresponding to the positions of the connecting holes 101, and the connecting bolts 102 pass through the connecting holes 101 and the through holes 401 to be threadedly connected to the fixing holes 304.

[0036] Combination Figure 10 As shown, the insulation cover 4 has a semi-cylindrical structure. A first fitting hole and a second fitting hole are respectively opened on both sides of the insulation cover 4. The first fitting hole fits with the connecting pipe 1, and the second fitting hole fits with the insulation pipe 2. A rubber ring 405 is provided inside the second fitting hole. During installation, the fixed flange 303 is brought into contact with the connecting pipe 1, and the connecting hole 101 is aligned with the fixed hole 304. Then, one side of each of the two insulation covers 4 is placed between the connecting flange 103 and the fixed flange 303, and the through hole 401 on the insulation cover 4 is aligned with the connecting hole 101. Then, the connecting bolt 102 is threaded through the connecting hole 101 and the through hole 401 and the fixed hole 304, so that the fixed flange 303 and the upper insulation cover 4 can be connected to the connecting flange 103. When it is necessary to disassemble the insulation pipe 2, the connecting bolt 102 can be unscrewed to contact the connection and fixation of the insulation pipe 2 and the insulation cover 4, which is convenient and quick.

[0037] When the two insulation covers 4 are placed between the connecting flange 103 and the fixed flange 303, the positioning block 403 of the insulation cover 4 is inserted into the positioning groove 404 of the other insulation cover 4, so that the two insulation covers 4 form a complete cylinder and wrap the fixed flange 303, the first bellows 301, the second bellows 302 and the fixed plate 3, so as to prevent heat from being lost from the first bellows 301 and the second bellows 302. Then, by setting the rubber ring 405, an elastic contact can be formed between the heat insulation cover 4 and the heat insulation tube 2, and the space inside the heat insulation cover 4 can be sealed to reduce further heat loss.

[0038] Reference Figure 4 , Figure 5 , Figure 8 and Figure 9As shown, three limiting blocks 502 are connected to the outside of the fixing plate 3, and the limiting blocks 502 correspond to the positions of the fixing block 5. Limiting holes are opened on the limiting blocks 502, and one end of the limiting rod 501 passes through the limiting hole. Through the setting of the limiting hole and the limiting rod 501, the movement direction of the fixing flange 303 can be limited.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An air heater insulation connection structure, characterized in that, include: A connecting pipe (1) is used to connect to an air heater and other equipment, and a connecting flange (103) is connected to one end of the connecting pipe (1). Insulation pipe (2) is used to transport hot air from the air heater into the equipment. The insulation pipe (2) is provided with an inner pipe (201). The compensation component is located inside the insulation pipe (2) and is used to compensate for the expansion and contraction of the insulation pipe (2). The compensation component includes: a fixing plate (3), a first corrugated pipe (301), a fixing flange (303), a fixing block (5), and a limiting rod (501). The insulation pipe (2) is connected to both ends of the fixing plate (3). The first corrugated pipe (301) is fixedly connected to one side of the fixing plate (3). The first corrugated pipe (301) is connected to one end of the first corrugated pipe (301) and is used to connect with the connecting flange (103). Three fixing blocks (5) are connected to the outside of the fixing plate (3). The limiting rod (501) is fixedly connected to one side of the fixing block (5). The insulation component is located between the connecting pipe (1) and the insulation pipe (2) and is used to insulate the connecting flange (103). The insulation component includes: insulation cover (4), side plate (402), positioning block (403) and positioning groove (404). The connecting flange (103) and the fixed flange (303) are provided with insulation cover (4). Two symmetrically arranged side plates (402) are connected to the outside of the insulation cover (4). The bottom of one side plate (402) is connected with positioning block (403), and the bottom of the other side plate (402) is provided with positioning groove (404).

2. The air heater insulation connection structure according to claim 1, characterized in that, Multiple support plates (202) are connected between the insulation pipe (2) and the inner pipe (201), and the space between the insulation pipe (2) and the inner pipe (201) is divided into multiple insulation layers (203) by the multiple support plates (202). The heat insulation medium in the insulation layer (203) is a static air layer.

3. The air heater insulation connection structure according to claim 1, characterized in that, A second corrugated pipe (302) is connected between the fixing plate (3) and the fixing flange (303), and the second corrugated pipe (302) is located outside the first corrugated pipe (301). Both the first corrugated pipe (301) and the second corrugated pipe (302) are made of 304 stainless steel.

4. The air heater insulation connection structure according to claim 3, characterized in that, The first corrugated pipe (301) and the second corrugated pipe (302) directly form an air gap to isolate the hot airflow inside the first corrugated pipe (301).

5. The air heater insulation connection structure according to claim 1, characterized in that, The connecting flange (103) has multiple connecting holes (101) and the multiple connecting holes (101) are evenly distributed in a ring array. The fixing flange (303) has multiple fixing holes (304) and the fixing holes (304) correspond to the positions of the connecting holes (101). The connecting holes (101) are threaded with connecting bolts (102).

6. The air heater insulation connection structure according to claim 5, characterized in that, There is a space between the connecting flange (103) and the fixed flange (303) to accommodate the thickness of the insulation cover (4). The insulation cover (4) has multiple through holes (401) corresponding to the position of the connecting hole (101). The connecting bolt (102) passes through the connecting hole (101) and the through hole (401) and is threaded to the fixed hole (304).

7. The air heater insulation connection structure according to claim 1, characterized in that, The heat insulation cover (4) is set in a semi-cylindrical structure. The heat insulation cover (4) has a first fitting hole and a second fitting hole on both sides respectively. The first fitting hole fits with the connecting pipe (1), and the second fitting hole fits with the heat insulation pipe (2). A rubber ring (405) is provided inside the second fitting hole.

8. The air heater insulation connection structure according to claim 1, characterized in that, The fixing plate (3) is connected to three limiting blocks (502) on the outside, and the limiting blocks (502) correspond to the fixing block (5) in position. Limiting holes are opened on the limiting blocks (502), and one end of the limiting rod (501) passes through the limiting hole.

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