A fixing device for air preheater maintenance

Abstract

The utility model relates to air preheater overhauls technical field, and disclose a kind of fixing device for air preheater overhauls, including fixed structure, L-shaped support upper end between movable installation has pivot, both ends of pivot are equipped with mounting seat B, air preheater is placed in the inside between two groups of L-shaped bottom strip, motor operation, positive and negative tooth screw rod rotates, promote two groups of L-shaped bottom strip to move towards, two groups of inverted L-shaped top strip also move towards along pressing plate, which is provided with board groove, control cylinder is elongated, push pressing plate to move down, two groups of L-shaped bottom strip and inverted L-shaped top strip are clamped and fixed at the four corners of air preheater, it is convenient to position fixed for air preheater, telescopic cylinder is elongated, inner connecting rod, inclined link, support rod and limit strip rotate with clamping component, two groups of inverted L-shaped top strip are inclined, the bottom end of air preheater is exposed in environment, it is convenient for maintenance personnel to maintain the bottom end of air preheater.

Description

Technical Field

[0001] This utility model relates to the field of air preheater maintenance technology, specifically a fixed device for air preheater maintenance. Background Technology

[0002] An air preheater is a device used to improve the efficiency of a boiler or heat exchange system. It recovers heat from exhaust gases to preheat the air entering the boiler or system, thereby improving thermal efficiency and reducing energy consumption. The main function of an air preheater is to utilize the heat from the exhaust gases discharged from the boiler to exchange heat within the preheater. External air flows through the heat exchange surfaces (such as tube bundles) of the air preheater, absorbing heat from the exhaust gases, thus increasing its temperature. The heated air is then sent into the boiler to mix thoroughly with the fuel, ensuring more complete combustion and improving thermal efficiency.

[0003] For example, a fixing device for air preheater maintenance, authorized by announcement number CN217097420U, includes support legs, sliding grooves, and fastening bolts. Rotating shafts are provided on both sides of the support plate, and rotating rods are provided on the outer surfaces of the rotating shafts. Sliding grooves are formed on the rotating rods, and fastening bolts are installed inside the sliding grooves. This fixing device for air preheater maintenance includes a first fixing bracket with a limit plate fixedly connected to a second fixing bracket. The second fixing bracket, via a first threaded rod, forms a left-right moving structure within the limit sliding groove. A drive motor is provided on the outer surface of the second fixing bracket, and a turntable is provided inside the second fixing bracket. A support plate is provided between the bottom of the turntable, and a lifting groove is formed on the inner surface of the turntable. A clamping plate, via a second threaded rod, forms a vertical lifting structure within the lifting groove, facilitating the fixing of the air preheater requiring maintenance and allowing for angle adjustment of the air preheater.

[0004] The aforementioned patent proposes that a drive motor rotates a turntable, causing the support plate to rotate, which facilitates the maintenance of the air preheater. However, in actual use, the weight of an air preheater can range from several tons to tens of tons. Using a motor to drive the turntable to rotate makes it difficult to support the rotated air preheater, resulting in lower safety and inconvenience for maintenance personnel. Utility Model Content

[0005] The purpose of this utility model is to provide a fixing device for air preheater maintenance, so as to solve the problem mentioned in the background art of the difficulty in bearing the load on the rotated air preheater.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fixing device for air preheater maintenance, comprising a fixing structure, wherein the fixing structure includes a fixing frame and a clamping member installed inside the fixing frame, a connecting plate is installed at the upper end of the inside of the clamping member, and a control cylinder is installed through the middle end of the connecting plate;

[0007] The fixing frame includes an L-shaped bracket and a diagonal support rod installed inside the L-shaped bracket. A rotating shaft is movably installed at the upper end of the L-shaped bracket. Mounting seats B are installed at both ends of the rotating shaft. An inner connecting rod is installed on the inner side of the mounting seat B. A diagonal connecting rod is installed at the lower end of the inner connecting rod.

[0008] Preferably, the clamping component includes a fixed plate and side plates installed on both ends of the fixed plate on the same side. An operating groove is provided through the middle of the side plate. An L-shaped bottom strip is movably installed on the same side of the fixed plate and at the lower end of the side plate. An inverted L-shaped top strip is installed on the same side of the fixed plate and between the side plates. A positioning component is installed between the inverted L-shaped top strip and the L-shaped bottom strip. An adjustment component is provided between the bottom ends of the two sets of L-shaped bottom strips, and a pulley is installed at the bottom end of the L-shaped bottom strip.

[0009] Preferably, the adjusting component includes a bottom strip and a top sliding groove formed at the top of the bottom strip. A motor is installed at one end of the bottom strip, and a positive and negative threaded screw is installed at the output end of the motor. The positive and negative threaded screw is movably installed inside the top sliding groove, and threaded hole plates are threadedly sleeved at both ends inside the top sliding groove.

[0010] Preferably, the positioning component includes a bottom tube installed at the top of the L-shaped bottom strip, a T-shaped groove is provided inside the top of the bottom tube, a compression spring is installed at the bottom of the T-shaped groove, and an inverted T-shaped rod is installed at the bottom of the inverted L-shaped top strip.

[0011] Preferably, a mounting base A is installed between the lower ends of the L-shaped bracket, a support rod is installed at the top of the inner connecting rod of the telescopic cylinder between the mounting base B and the mounting base A, and a limit strip is installed between the support rods and on the inner connecting rod. There are four sets of support rods and two sets of limit strips. A connecting plate is installed between the two sets of limit strips.

[0012] Preferably, the connecting plate is installed between two sets of limiting strips, and the upper ends of the two sets of inverted L-shaped top strips are transversely provided with plate grooves, and the bottom end of the control cylinder is equipped with a pressure plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The present invention discloses a fixing device for air preheater maintenance. The air preheater is placed inside the space between two sets of L-shaped bottom strips. When the motor operates, the positive and negative threaded screws rotate, causing the two sets of L-shaped bottom strips to move towards each other. The two sets of inverted L-shaped top strips with plate grooves also move towards each other along the pressure plate. The control cylinder extends, pushing the pressure plate downward. The two sets of L-shaped bottom strips and inverted L-shaped top strips clamp and fix the four corners of the air preheater, which facilitates the fixation of the air preheater position.

[0015] 2. The present invention discloses a fixing device for air preheater maintenance. When the telescopic cylinder extends, the inner connecting rod, the oblique connecting rod, the support rod and the limiting strip will carry the clamping component to rotate. The two sets of inverted L-shaped top strips are inclined, and the bottom end of the air preheater is exposed to the environment, which makes it convenient for maintenance personnel to maintain the bottom end of the air preheater. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the fixing frame of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the clamping component and adjusting component of this utility model;

[0019] Figure 4 For the present utility model Figure 3 Enlarged view of point A in the middle.

[0020] In the diagram: 1. Fixed structure; 11. Fixed frame; 111. L-shaped bracket; 112. Diagonal support rod; 113. Mounting seat A; 114. Mounting seat B; 115. Rotating shaft; 116. Internal connecting rod; 117. Diagonal connecting rod; 118. Support rod; 119. Limiting strip; 12. Clamping component; 121. Fixed plate; 122. Side plate; 123. Operating groove; 124. L-shaped bottom strip; 125. Inverted L-shape 126. Top bar; 127. Pulley; 128. Plate groove; 13. Adjusting component; 131. Bottom bar; 132. Motor; 133. Top slide groove; 134. Positive and negative threaded screw; 135. Threaded hole plate; 14. Connecting plate; 15. Control cylinder; 16. Telescopic cylinder; 17. Positioning component; 171. Bottom tube; 172. T-shaped circular groove; 173. Compression spring; 174. Inverted T-shaped rod; 18. Pressure plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1: Please refer to Figures 1-4 A fixing device for air preheater maintenance includes a fixing structure 1. The fixing structure 1 includes a fixing frame 11 and a clamping member 12 installed inside the fixing frame 11. A connecting plate 14 is installed at the upper end of the inside of the clamping member 12, and a control cylinder 15 is installed through the middle end of the connecting plate 14.

[0023] The fixed frame 11 includes an L-shaped bracket 111 and an inclined support rod 112 installed inside the L-shaped bracket 111. A rotating shaft 115 is movably installed at the upper end of the L-shaped bracket 111. Mounting seats B114 are installed at both ends of the rotating shaft 115. An inner connecting rod 116 is installed on the inner side of the mounting seat B114. An inclined connecting rod 117 is installed at the lower end of the inner connecting rod 116.

[0024] The clamping component 12 includes a fixed plate 121 and side plates 122 installed on both ends of the fixed plate 121 on the same side. An operating groove 123 is provided through the middle of the side plates 122. An L-shaped bottom strip 124 is movably installed on the lower end of the side plates 122 on the same side of the fixed plate 121. An inverted L-shaped top strip 125 is installed on the same side of the fixed plate 121 between the side plates 122. A positioning component 17 is installed between the inverted L-shaped top strip 125 and the L-shaped bottom strip 124. The L-shaped bottom strip 124 has an adjustment member 13 between its bottom ends, and a pulley 126 is installed at the bottom end of the L-shaped bottom strip 124. The L-shaped bottom strip 124 and the inverted L-shaped top strip 125 on the same side can restrict the top and bottom ends of the air preheater on the same side. The inner sides of the L-shaped bottom strip 124 and the inverted L-shaped top strip 125 are in the same vertical direction. The inner connecting rod 116 and the oblique connecting rod 117 are installed on the outer side of the side plate 122 to support the position of the side plate 122.

[0025] The adjusting component 13 includes a bottom strip 131 and a top sliding groove 133 opened at the top of the bottom strip 131. A motor 132 is installed at one end of the bottom strip 131. A positive and negative thread screw 134 is installed at the output end of the motor 132. The positive and negative thread screw 134 is movably installed inside the top sliding groove 133. Threaded hole plates 135 are threadedly connected to both ends of the top sliding groove 133. The threaded hole plates 135 are installed at the bottom end of the L-shaped bottom strip 124.

[0026] The positioning component 17 includes a bottom tube 171 installed at the top of the L-shaped bottom strip 124. A T-shaped groove 172 is provided inside the top of the bottom tube 171. A compression spring 173 is installed at the bottom of the T-shaped groove 172. An inverted T-shaped rod 174 is installed at the bottom of the inverted L-shaped top strip 125. The bottom of the inverted T-shaped rod 174 is slidably installed inside the T-shaped groove 172, and the top of the compression spring 173 is installed at the bottom of the inverted T-shaped rod 174.

[0027] In this embodiment: the air preheater is placed inside the space between two sets of L-shaped bottom strips 124, with one side of the air preheater contacting the fixing plate 121. The motor 132 operates, causing the positive and negative threaded screws 134 to rotate, thus moving the two sets of L-shaped bottom strips 124 towards each other. The pulleys 126 facilitate the movement of the L-shaped bottom strips 124. Since the positioning member 17 is installed between the L-shaped bottom strips 124 and the inverted L-shaped top strips 125, when the two sets of L-shaped bottom strips 124 move towards each other, the two sets of inverted L-shaped top strips 125 with grooves 127 also move towards each other along the pressure plate 18, affecting the lower sides of the air preheater. During clamping and fixing, the two sets of inverted L-shaped top bars 125 move to the top sides of the air preheater, and the control cylinder 15 extends, pushing the pressure plate 18 downward, so that the inverted L-shaped top bars 125 installed at both ends of the pressure plate 18 move downward, and the inverted T-shaped rod 174 moves downward inside the T-shaped circular groove 172. The inverted L-shaped top bars 125 are stuck at the top sides of the air preheater. The four corners of the air preheater are clamped and fixed by the two sets of L-shaped bottom bars 124 and the inverted L-shaped top bars 125, which facilitates the maintenance of the air preheater after fixing its position. Maintenance personnel can maintain the two sides of the air preheater through the operating groove 123.

[0028] Example 2: This example is an improvement upon Example 1. For details, please refer to [link / reference]. Figures 2-4 A mounting base A113 is installed between the lower ends of the L-shaped bracket 111. A telescopic cylinder 16 is installed between the mounting base B114 and the mounting base A113. A support rod 118 is installed at the top of the inner connecting rod 116. A limit strip 119 is installed between the support rods 118 and on the inner connecting rod 116. There are four sets of support rods 118 and two sets of limit strips 119. A connecting plate 14 is installed between the two sets of limit strips 119. The telescopic cylinder 16 can control the placement angle of the mounting base B114, the inner connecting rod 116, the diagonal connecting rod 117, the support rod 118 and the limit strip 119.

[0029] The connecting plate 14 is installed between the two sets of limiting strips 119. The upper ends of the two sets of inverted L-shaped top strips 125 are transversely provided with plate grooves 127. The bottom end of the control cylinder 15 is equipped with a pressure plate 18, which is located inside the plate groove 127, so as to facilitate the adjustment of the position of the two sets of inverted L-shaped top strips 125.

[0030] In this embodiment: when maintenance personnel perform maintenance on the bottom end of the air preheater, the telescopic cylinder 16 extends, and the mounting base B114 rotates along the outer side of the rotating shaft 115. The inner connecting rod 116, the oblique connecting rod 117, the support rod 118, and the limiting strip 119 rotate the clamping component 12. The two sets of inverted L-shaped top strips 125 are inclined, and the bottom end of the air preheater is exposed to the environment. Since the two sets of inverted L-shaped top strips 125 clamp the two sides of the bottom end of the air preheater, it is convenient for maintenance personnel to maintain the bottom end of the air preheater. The two sets of inverted L-shaped top strips 125 and the fixing plate 121 restrict the inclined air preheater and prevent the air preheater from hitting the device when adjusting the maintenance angle of the air preheater.

[0031] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fixing device for air preheater maintenance, comprising a fixing structure (1), characterized in that: The fixing structure (1) includes a fixing frame (11) and a clamping member (12) installed inside the fixing frame (11). A connecting plate (14) is installed at the upper end of the inside of the clamping member (12), and a control cylinder (15) is installed through the middle end of the connecting plate (14). The fixing frame (11) includes an L-shaped bracket (111) and a diagonal support rod (112) installed inside the L-shaped bracket (111). A rotating shaft (115) is movably installed between the upper ends of the L-shaped bracket (111). Mounting seats B (114) are installed at both ends of the rotating shaft (115). An inner connecting rod (116) is installed on the inner side of the mounting seat B (114). A diagonal connecting rod (117) is installed at the lower end of the inner connecting rod (116).

2. The fixing device for air preheater maintenance according to claim 1, characterized in that: The clamping member (12) includes a fixed plate (121) and side plates (122) installed on both ends of the fixed plate (121). An operating groove (123) is provided through the middle of the side plate (122). An L-shaped bottom strip (124) is movably installed on the same side of the fixed plate (121) and at the lower end of the side plate (122). An inverted L-shaped top strip (125) is installed on the same side of the fixed plate (121) and between the side plates (122). A positioning member (17) is installed between the inverted L-shaped top strip (125) and the L-shaped bottom strip (124). An adjustment member (13) is provided between the bottom ends of the two sets of L-shaped bottom strips (124). A pulley (126) is installed at the bottom end of the L-shaped bottom strip (124).

3. A fixing device for air preheater maintenance according to claim 2, characterized in that: The adjusting component (13) includes a bottom strip (131) and a top sliding groove (133) opened at the top of the bottom strip (131). A motor (132) is installed at one end of the bottom strip (131). A positive and negative thread screw (134) is installed at the output end of the motor (132), and the positive and negative thread screw (134) is movably installed inside the top sliding groove (133). Threaded hole plates (135) are threaded at both ends inside the top sliding groove (133).

4. A fixing device for air preheater maintenance according to claim 2, characterized in that: The positioning component (17) includes a bottom tube (171) installed at the top of the L-shaped bottom strip (124), a T-shaped groove (172) is provided inside the top of the bottom tube (171), a compression spring (173) is installed at the bottom of the T-shaped groove (172), and an inverted T-shaped rod (174) is installed at the bottom of the inverted L-shaped top strip (125).

5. A fixing device for air preheater maintenance according to claim 2, characterized in that: Mounting seat A (113) is installed between the lower ends of the L-shaped bracket (111). A telescopic cylinder (16) is installed between mounting seat B (114) and mounting seat A (113). A support rod (118) is installed at the top of the inner rod (116). A limit strip (119) is installed between the support rods (118) and on the inner rod (116). There are four sets of support rods (118) and two sets of limit strips (119). A connecting plate (14) is installed between the two sets of limit strips (119).

6. A fixing device for air preheater maintenance according to claim 5, characterized in that: The connecting plate (14) is installed between two sets of limiting strips (119), and the upper ends of the two sets of inverted L-shaped top strips (125) are transversely provided with plate grooves (127), and the bottom end of the control cylinder (15) is equipped with a pressure plate (18).

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