Coal economizer sealing device

Abstract

This utility model provides an economizer sealing device, relating to the field of economizer technology. The utility model includes an economizer body, which is supported by legs placed on the ground. An inlet and an outlet are respectively located at both ends of the economizer body. A sealing ring is fixedly connected to the inlet of the economizer body, allowing the inlet to connect to an external flue pipe. Several heat exchange tubes are installed inside the economizer body, each with a serpentine cross-section. An inlet and outlet water pipe are fixedly connected to both ends of the heat exchange tubes, and both are fixedly connected to the economizer body. A cleaning device is installed inside the economizer body to clean the surface of the heat exchange tubes. This utility model achieves the effect of cleaning the surface of the heat exchange tubes through the cleaning device, preventing dust accumulation on the surface and thus avoiding poor flue gas heat exchange.

Description

Technical Field

[0001] This utility model relates to the field of economizer technology, and in particular to an economizer sealing device. Background Technology

[0002] The working principle of the economizer is based on the basic principle of heat exchange, that is, to transfer the heat in the flue gas to the lower temperature boiler feedwater through heat conduction, convection and radiation.

[0003] In existing economizers, flue gas needs to enter the interior of the economizer. After prolonged use, dust in the flue gas easily adheres to the surface of the heat exchange tubes inside the economizer. The dust blocks the contact between the flue gas and the heat exchange tubes, resulting in poor heat exchange performance of the economizer. Utility Model Content

[0004] This utility model proposes an economizer sealing device to overcome the shortcomings of existing technologies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an economizer sealing device, comprising an economizer body, the economizer body being placed on the ground by means of support legs to provide overall support, the flue gas inlet and the flue gas outlet being respectively opened at both ends of the economizer body, the economizer body being fixedly connected to a sealing ring by means of the flue gas inlet, wherein the flue gas inlet can be connected to an external flue pipe by means of the sealing ring, a plurality of heat exchange tubes being installed inside the economizer body, wherein the heat exchange tubes have a serpentine cross-section, the water inlet pipe and the water outlet pipe being respectively fixedly connected to both ends of the heat exchange tubes, wherein the water inlet pipe and the water outlet pipe are both fixedly connected to the economizer body, and the cleaning device being installed inside the economizer body, wherein the cleaning device can clean the surface of the heat exchange tubes.

[0006] The aforementioned components achieve the following effects: When using the economizer body, the operator connects the external flue pipe to the flue gas inlet of the economizer body. At this time, the sealing ring seals the gap between the flue pipe and the economizer body. The flue gas enters the interior of the economizer body through the flue pipe. Water is then introduced into the heat exchange tubes through the water inlet pipe. The heat in the flue gas is absorbed by the water in the heat exchange tubes. Finally, the flue gas is discharged from the economizer body through the flue gas outlet, while the water in the heat exchange tubes is discharged from the economizer body through the water outlet pipe. When there is a lot of dust on the heat exchange tubes, the operator cleans the surface of the heat exchange tubes using a cleaning device.

[0007] Preferably, the cleaning device includes a motor mounted on the upper surface of the economizer body. The motor is fixedly connected to a screw via a reducer. The screw is located inside the economizer body. Several movable plates are arranged inside the economizer body and are interconnected via connecting plates. The screw is threadedly connected to one of the movable plates. A pre-drilled hole is formed on the surface of the movable plate, and a heat exchange tube is located inside the pre-drilled hole. A fixing ring is arranged inside the pre-drilled hole, and the fixing ring is fitted onto the arc surface of the heat exchange tube. The fixing ring is fixedly connected to the movable plate via a support rod. A sponge pad is fixedly connected inside the fixing ring, and the inside of the sponge pad is in contact with the surface of the heat exchange tube.

[0008] The effect achieved by the above components is as follows: when there is a lot of dust on the surface of the heat exchange tubes, the operator turns on the motor, which drives the screw to rotate through the reducer. The screw moves multiple moving plates up and down. When the moving plates move downward, the sponge pad inside the fixed ring cleans the surface of the heat exchange tubes. When the moving plates move upward, the sponge pad inside the fixed ring cleans the surface of the heat exchange tubes at the same time. The cleaned dust falls to the bottom of the economizer body through the reserved holes of the moving plates. The cleaning device achieves the effect of cleaning the surface of the heat exchange tubes, avoiding the accumulation of dust on the surface of the heat exchange tubes, thus preventing poor flue gas heat exchange.

[0009] Preferably, a bearing is provided at one end of the screw, the outer ring of the bearing is fixedly connected to the bottom of the economizer body, and the inner ring of the bearing is fixedly connected to the screw.

[0010] The effect achieved by the above components is to improve the stability of screw rotation by setting bearings, and to prevent screw from shaking.

[0011] Preferably, four limiting rods slide through the surface of the movable plate, and the two ends of the four limiting rods are fixedly connected to the inner wall of the economizer body.

[0012] The effect achieved by the above components is that by setting the limit rod, the moving direction of the moving plate is restricted, thus preventing the moving plate from shaking.

[0013] Preferably, a protective plate is fixedly connected inside the economizer body, and the protective plate is located between the screw and the flue gas inlet.

[0014] The effect achieved by the above components is that the protective plate protects the screw and minimizes the amount of dust that can adhere to its surface.

[0015] Preferably, the bottom of the economizer body is provided with a collection device, the collection device including a collection frame, the collection frame being slidably disposed at the bottom of the economizer body, a fixing plate being fixedly connected to one side of the collection frame, a pad being fixedly connected to the economizer body at the location corresponding to the fixing plate, an insert plate being slidably passed through the surface of the pad, wherein the fixing plate has an insertion hole at the insertion point, and the size of the insert plate is adapted to the size of the insertion hole.

[0016] The aforementioned components achieve the following effect: Before cleaning the heat exchange tubes inside the economizer body, the operator moves the fixing plate, which, along with the collection frame, is inserted into the bottom of the economizer body. When the fixing plate is in contact with the economizer body, the operator moves the insert plate on the pad, which passes through the pad and inserts into the hole of the fixing plate, thus securing the fixing plate. When the sponge pad cleans the heat exchange tubes, the cleaned dust falls into the collection frame, making it convenient for the operator to handle uniformly and providing convenience.

[0017] Preferably, a handle is fixedly connected to one side of the fixing plate, wherein the surface of the handle is provided with anti-slip texture.

[0018] The effect achieved by the above components is to increase the contact area between the worker's hand and the fixed plate by setting handles, thereby making it easier for the worker to move the fixed plate and the collection box.

[0019] Preferably, a rubber ring is fixedly connected to the side of the fixing plate near the collection frame, wherein the size of the rubber ring is adapted to the size of the fixing plate.

[0020] The effect achieved by the above components is that by setting the rubber ring, the gap between the fixed plate and the economizer body is sealed, preventing flue gas from flowing out through the gap.

[0021] In summary, the beneficial effects of this utility model are as follows:

[0022] When there is a lot of dust on the surface of the heat exchange tubes, the operator turns on the motor. The motor drives the screw to rotate with the help of the reducer. The screw moves multiple moving plates up and down. When the moving plates move downward, the sponge pad inside the fixed ring cleans the surface of the heat exchange tubes. When the moving plates move upward, the sponge pad inside the fixed ring cleans the surface of the heat exchange tubes at the same time. The dust is cleaned and falls to the bottom of the economizer body through the reserved holes of the moving plates. The cleaning device achieves the effect of cleaning the surface of the heat exchange tubes, avoiding the accumulation of dust on the surface of the heat exchange tubes, which would lead to poor flue gas heat exchange effect. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This utility model Figure 1 A sectional view;

[0025] Figure 3 This is a three-dimensional structural diagram of the internal parts of the economizer body of this utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of the cleaning device of this utility model;

[0027] Figure 5 This is a three-dimensional structural diagram of the reserved hole in this utility model;

[0028] Figure 6 This is a three-dimensional structural diagram of the collection device of this utility model;

[0029] Figure 7 This is a three-dimensional structural diagram of the rear side of the collection frame of this utility model.

[0030] Legend: 1. Economizer body; 2. Flue gas inlet; 3. Flue gas outlet; 4. Sealing ring; 5. Heat exchange tube; 6. Water inlet pipe; 7. Water outlet pipe; 8. Cleaning device; 81. Motor; 82. Screw; 83. Moving plate; 84. Reserved hole; 85. Fixing ring; 86. Sponge pad; 87. Limiting rod; 88. Bearing; 89. Protective plate; 9. Collection device; 91. Fixing plate; 92. Collection frame; 93. Pad; 94. Insert plate; 95. Insertion hole; 96. Handle; 97. Rubber ring. Detailed Implementation

[0031] Reference Figure 1-7As shown, this embodiment discloses an economizer sealing device, including an economizer body 1, which is supported by legs placed on the ground; a flue gas inlet 2 and a flue gas outlet 3, which are respectively opened at both ends of the economizer body 1; a sealing ring 4 is fixedly connected to the economizer body 1 via the flue gas inlet 2, wherein the flue gas inlet 2 can be connected to an external flue gas pipe via the sealing ring 4; heat exchange tubes 5, a plurality of heat exchange tubes 5 are installed inside the economizer body 1, wherein the cross-section of the heat exchange tubes 5 is serpentine; a water inlet pipe 6 and a water outlet pipe 7, which are respectively fixedly connected to both ends of the heat exchange tubes 5, wherein the water inlet pipe 6 and the water outlet pipe 7 are both fixedly connected to the economizer body 1; and a cleaning device 8, which is installed inside the economizer body 1, wherein the cleaning device 8 can clean the surface of the heat exchange tubes 5. When using the economizer body 1, the operator connects the external flue pipe to the flue gas inlet 2 of the economizer body 1. At this time, the sealing ring 4 seals the gap between the flue pipe and the economizer body 1. The flue gas enters the interior of the economizer body 1 through the flue pipe. Then, water is sent into the interior of the heat exchange tube 5 through the water inlet pipe 6. The heat in the flue gas is absorbed by the water in the heat exchange tube 5. Finally, the flue gas is discharged from the economizer body 1 through the flue gas outlet 3, and the water in the heat exchange tube 5 is discharged from the economizer body 1 through the water outlet pipe 7. When there is a lot of dust on the heat exchange tube 5, the operator cleans the surface of the heat exchange tube 5 through the cleaning device 8.

[0032] Reference Figure 1-7 As shown, the cleaning device 8 includes a motor 81, which is mounted on the upper surface of the economizer body 1. The motor 81 is fixedly connected to a screw 82 via a reducer. The screw 82 is located inside the economizer body 1. Several movable plates 83 are arranged inside the economizer body 1 and are interconnected via connecting plates. The screw 82 is threadedly connected to one of the movable plates 83. A pre-drilled hole 84 is formed on the surface of the movable plate 83. The heat exchange tube 5 is located inside the pre-drilled hole 84. A fixing ring 85 is arranged inside the pre-drilled hole 84. The fixing ring 85 is fitted onto the arc surface of the heat exchange tube 5 and is fixedly connected to the movable plate 83 via a support rod. A sponge pad 86 is fixedly connected inside the fixing ring 85, and the inside of the sponge pad 86 is in contact with the surface of the heat exchange tube 5. When there is a lot of dust on the surface of the heat exchange tube 5, the operator turns on the motor 81. The motor 81 drives the screw 82 to rotate through the reducer. The screw 82 moves multiple moving plates 83 up and down. When the moving plate 83 moves downward, the sponge pad 86 inside the fixing ring 85 cleans the surface of the heat exchange tube 5. When the moving plate 83 moves upward, the sponge pad 86 inside the fixing ring 85 cleans the surface of the heat exchange tube 5 at the same time. The dust cleaned falls to the bottom of the economizer body 1 through the reserved hole 84 of the moving plate 83. The cleaning device 8 achieves the effect of cleaning the surface of the heat exchange tube 5, avoiding the accumulation of dust on the surface of the heat exchange tube 5, which would result in poor flue gas heat exchange effect.

[0033] Reference Figure 1-7 As shown, a bearing 88 is provided at one end of the screw 82. The outer ring of the bearing 88 is fixedly connected to the bottom of the economizer body 1, while the inner ring of the bearing 88 is fixedly connected to the screw 82. The bearing 88 improves the stability of the screw 82's rotation and prevents it from shaking. Four limiting rods 87 slide through the surface of the moving plate 83, and both ends of the four limiting rods 87 are fixedly connected to the inner wall of the economizer body 1. The limiting rods 87 restrict the movement direction of the moving plate 83, preventing it from shaking. A protective plate 89 is fixedly connected inside the economizer body 1, located between the screw 82 and the flue gas inlet 2. The protective plate 89 protects the screw 82, minimizing dust accumulation on its surface.

[0034] Reference Figure 1-7 As shown, a collection device 9 is provided at the bottom of the economizer body 1. The collection device 9 includes a collection frame 92, which is slidably installed at the bottom of the economizer body 1. A fixing plate 91 is fixedly connected to one side of the collection frame 92. A pad 93 is fixedly connected to the economizer body 1 at the location corresponding to the fixing plate 91. An insert plate 94 slides through the surface of the pad 93. The fixing plate 91 has an insertion hole 95 at the insertion point, and the size of the insert plate 94 is adapted to the size of the insertion hole 95. Before cleaning the heat exchange tubes 5 inside the economizer body 1, the staff moves the fixing plate 91, which, along with the collection frame 92, is inserted into the bottom of the economizer body 1. When the fixing plate 91 is in contact with the economizer body 1, the staff moves the insert plate 94 on the pad 93. The insert plate 94 passes through the pad 93 and is inserted into the insertion hole 95 of the fixing plate 91, thus fixing the fixing plate 91. When the sponge pad 86 cleans the heat exchange tubes 5, the dust that is cleaned falls into the collection frame 92, making it convenient for the staff to handle it uniformly and bringing convenience to the staff.

[0035] Reference Figure 1-7 As shown, a handle 96 is fixedly connected to one side of the fixed plate 91, and the surface of the handle 96 is provided with anti-slip texture. The handle 96 increases the contact area between the operator's hand and the fixed plate 91, thus facilitating the movement of the fixed plate 91 and the collection frame 92. A rubber ring 97 is fixedly connected to the side of the fixed plate 91 near the collection frame 92, and the size of the rubber ring 97 is adapted to the size of the fixed plate 91. The rubber ring 97 effectively seals the gap between the fixed plate 91 and the economizer body 1, preventing flue gas from leaking out through the gap.

[0036] Working principle: When using the economizer body 1, the operator connects the external flue pipe to the flue gas inlet 2 of the economizer body 1. At this time, the sealing ring 4 seals the gap between the flue pipe and the economizer body 1. The flue gas enters the interior of the economizer body 1 through the flue pipe. Water is then introduced into the heat exchange tube 5 through the water inlet pipe 6. The heat in the flue gas is absorbed by the water in the heat exchange tube 5. Finally, the flue gas is discharged from the economizer body 1 through the flue gas outlet 3, while the water in the heat exchange tube 5 is discharged from the economizer body 1 through the water outlet pipe 7. When there is a lot of dust on the surface of the heat exchange tube 5, the operator turns on the motor 81. The motor 81 drives the screw 82 to rotate with the help of a reducer. The bearing 88 at one end of the screw 82 improves the stability of the screw 82 rotation. The protective plate 89 located between the screw 82 and the flue gas inlet 2 effectively protects the screw 82, minimizing the amount of dust in the flue gas from falling onto it. The screw 82 moves up and down with multiple moving plates 83. When the moving plates 83 move downwards, the sponge pad 86 inside the fixing ring 85 cleans the surface of the heat exchange tube 5. When the moving plates 83 move upwards, the sponge pad 86 inside the fixing ring 85 simultaneously cleans the surface of the heat exchange tube 5. The cleaned dust falls to the bottom of the economizer body 1 through the reserved holes 84 of the moving plates 83. The cleaning device 8 effectively cleans the surface of the heat exchange tube 5, preventing dust from accumulating on the surface of the heat exchange tube 5 and thus avoiding poor flue gas heat exchange.

[0037] Before cleaning the heat exchange tubes 5 inside the economizer body 1, the staff moves the fixing plate 91 by the handle 96. The fixing plate 91, along with the collection frame 92, is inserted into the bottom of the economizer body 1. When the fixing plate 91 is in contact with the economizer body 1 with the help of the sponge ring, the staff moves the insert plate 94 on the pad 93. The insert plate 94 passes through the pad 93 and is inserted into the insertion hole 95 of the fixing plate 91, thus fixing the fixing plate 91. When the sponge pad 86 cleans the heat exchange tubes 5, the dust that is cleaned falls into the collection frame 92, which is convenient for the staff to handle uniformly and brings convenience to the staff.

Claims

1. An economizer seal apparatus, characterized by: Includes an economizer body (1), which is placed on the ground by means of outriggers to provide support for the whole; The inlet (2) and outlet (3) are respectively located at both ends of the economizer body (1). The economizer body (1) is fixedly connected to a sealing ring (4) via the inlet (2). The inlet (2) can be connected to an external smoke pipe via the sealing ring (4). Heat exchange tubes (5), a plurality of said heat exchange tubes (5) are installed inside the economizer body (1), wherein the cross section of the heat exchange tubes (5) is serpentine; Water inlet pipe (6) and water outlet pipe (7) are fixedly connected to both ends of heat exchange tube (5), and both water inlet pipe (6) and water outlet pipe (7) are fixedly connected to economizer body (1). A cleaning device (8) is installed inside the economizer body (1) and can clean the surface of the heat exchange tubes (5).

2. The economizer sealing device according to claim 1, characterized in that: The cleaning device (8) includes a motor (81), which is installed on the upper surface of the economizer body (1). The motor (81) is fixedly connected to a screw (82) by means of a reducer. The screw (82) is located inside the economizer body (1). The economizer body (1) is provided with a plurality of movable plates (83). The plurality of movable plates (83) are connected to each other by means of a connecting plate. The screw (82) is threadedly connected to one of the movable plates (83). A reserved hole (84) is provided on the surface of the movable plate (83), wherein the heat exchange tube (5) is located inside the reserved hole (84), and a fixing ring (85) is provided inside the reserved hole (84), wherein the fixing ring (85) is fitted on the arc surface of the heat exchange tube (5), and the fixing ring (85) is fixedly connected to the movable plate (83) by means of a support rod; A sponge pad (86) is fixedly connected inside a fixing ring (85), wherein the inside of the sponge pad (86) is in contact with the surface of the heat exchange tube (5).

3. The economizer sealing device according to claim 2, characterized in that: One end of the screw (82) is provided with a bearing (88), the outer ring of the bearing (88) is fixedly connected to the bottom of the economizer body (1), and the inner ring of the bearing (88) is fixedly connected to the screw (82).

4. The economizer sealing device according to claim 2, characterized in that: Four limiting rods (87) slide through the surface of the movable plate (83), and the two ends of the four limiting rods (87) are fixedly connected to the inner wall of the economizer body (1).

5. The economizer sealing device according to claim 2, characterized in that: The economizer body (1) is internally fixedly connected to a protective plate (89), which is located between the screw (82) and the flue gas inlet (2).

6. The economizer sealing device according to claim 1, characterized in that: The bottom of the economizer body (1) is provided with a collection device (9), which includes a collection frame (92). The collection frame (92) is slidably installed at the bottom of the economizer body (1). A fixing plate (91) is fixedly connected to one side of the collection frame (92). A pad (93) is fixedly connected to the economizer body (1) at the location corresponding to the fixing plate (91). An insert plate (94) slides through the surface of the pad plate (93). The fixing plate (91) has an insertion hole (95) at the insertion point. The size of the insert plate (94) is adapted to the size of the insertion hole (95).

7. The economizer sealing device according to claim 6, characterized in that: A handle (96) is fixedly connected to one side of the fixing plate (91), wherein the surface of the handle (96) is provided with anti-slip texture.

8. The economizer sealing device according to claim 6, characterized in that: A rubber ring (97) is fixedly connected to the side of the fixing plate (91) near the collection frame (92), wherein the size of the rubber ring (97) is adapted to the size of the fixing plate (91).

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