Tubular heat exchanger with vibration cleaning function and vibration mechanism of tubular heat exchanger

Abstract

The invention discloses a heat exchanger, and particularly relates to a tubular heat exchanger with a vibration cleaning function, which comprises a reinforced heat exchange tube, an ash removal trolley is arranged on the reinforced heat exchange tube, a support frame is arranged on the ash removal trolley, and a vibration assembly and a driving device are arranged on the support frame. The driving device works to drive the supporting frame to move along the reinforced heat exchange tubes, so that translation of the toothed plate assembly between the heat exchange tubes can be achieved, and ash removal operation is achieved. Meanwhile, due to the arrangement of the vibration part, the toothed plate assembly can be driven to reciprocate up and down, the toothed plate can reciprocate from top to bottom in gaps of the heat exchange tubes, sticky or hardened accumulated dust on the heat exchange tubes is cut and vibrated off, and long-term stable dust removal is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of power equipment, and in particular to a tubular heat exchanger with a vibration cleaning function. Background Art

[0002] In order to improve the thermal efficiency of the boiler and reduce the heat loss of flue gas, the existing solution is usually to install a heat exchanger at the tail of the furnace. However, after long-term use, dust will generally accumulate on the surface of the heat exchanger, resulting in a decrease in the thermal efficiency of the heat exchanger and hindering the flow of flue gas. And these dusts usually contain sulfur, which will corrode the heat exchange tubes of the heat exchanger. The current dust cleaning equipment usually uses push-pull and vibration methods to clean the dust. The vibration device mostly uses a cylinder. However, the air pipe of the cylinder is easy to rupture in a high temperature and high corrosion environment, and the vibration frequency of the cylinder is difficult to adjust. At the same time, the installation space requirements of the cylinder vibration device are relatively high. Therefore, there is an urgent need for a highly reliable, easy-to-adjust tubular heat exchanger with a vibration cleaning function. Summary of the invention

[0003] In order to solve the problems existing in the above-mentioned prior art, the present invention provides a tubular heat exchanger with a vibration cleaning function to solve the current technical problems.

[0004] The technical solution adopted by the present invention to solve the technical problem is: A vibration mechanism of a heat exchanger cleaning device includes: a vibration component, the vibration component includes a transmission shaft, an eccentric wheel is arranged on the transmission shaft, the eccentric wheel is supported on the main shaft of the vibration component for up and down vibration, a spring for resetting the main shaft is arranged below the main shaft, a tooth plate is connected to the main shaft, the tooth plate is arranged between the heat exchange tubes, and the vibration component is arranged on a support frame.

[0005] A tubular heat exchanger with a vibration cleaning function comprises: a vibration component and a heat exchange tube box, the heat exchange tube box is provided with a track, a dust cleaning trolley which reciprocates along the track is provided on the track, a support frame is provided on the dust cleaning trolley, the support frame is provided with a vibration component which reciprocates in a vertical direction and a driving device which drives the dust cleaning trolley to move in a horizontal direction.

[0006] Preferably, the track is a reinforced heat exchange tube.

[0007] Preferably, the heat exchange tube box is provided with a plurality of heat exchange tubes.

[0008] Preferably, a dust cleaning trolley is provided on the reinforced heat exchange tube, and wheels are provided on the dust cleaning trolley. The wheels are connected to the wheel frame plate through a wheel axle, the wheel frame plate is connected to the clamping plate through a pad, and the clamping plate is fixed on the support frame.

[0009] Preferably, the vibration assembly includes a transmission shaft, an eccentric wheel is arranged on the transmission shaft, the eccentric wheel is pressed on the main shaft of the vibration assembly for up and down vibration, the main shaft is connected with a tooth plate, the tooth plate is arranged between the heat exchange tubes, and the vibration assembly is arranged on a support frame.

[0010] Preferably, the vibration assembly includes a main shaft, and an upper fixed seat and a lower fixed seat are arranged on the upper and lower sides of the main shaft, the upper fixed seat and the lower fixed seat are connected to each other, and a reset guide rod is connected to the lower fixed seat, and the lower end of the reset guide rod passes through a second support plate, and the second support plate is arranged on the support frame.

[0011] Preferably, the transmission shaft is connected to the motor, and a reset spring is sleeved on the outer side of the reset guide rod.

[0012] The beneficial effect of the present invention is that the support frame can be driven to move along the reinforced heat exchange tube by the driving device, so that the tooth plate assembly can be translated between the heat exchanger tubes to achieve dust cleaning. At the same time, due to the setting of the vibration part, the tooth plate assembly can be driven to reciprocate up and down, so that the tooth plate can reciprocate from top to bottom in the gap between the heat exchange tubes, cut and shake off the sticky or hardened dust on the heat exchange tube, and clean the dust on the tube plates at both ends of the heat exchanger, thereby avoiding the problem of the tooth plate travel range being gradually compressed due to sticky dust accumulation, and achieving long-term stable dust cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a structural schematic diagram of a tubular heat exchanger with a vibration cleaning function according to an embodiment of the present invention; Figure 2 is a structural schematic diagram of a tubular heat exchanger with a vibration cleaning function according to an embodiment of the present invention; Figure 3 is a structural schematic diagram of a part of the structure of a tubular heat exchanger with a vibration cleaning function according to an embodiment of the present invention; Figure 4 is a structural schematic diagram of a part of the structure of a tubular heat exchanger with a vibration cleaning function according to an embodiment of the present invention; Figure 5 is a structural schematic diagram of a part of the structure of a tubular heat exchanger with a vibration cleaning function according to an embodiment of the present invention; Figure 6 is a structural schematic diagram of a part of the structure of a tubular heat exchanger with a vibration cleaning function according to an embodiment of the present invention; Figure 7 is a structural schematic diagram of a part of the structure of a tubular heat exchanger with a vibration cleaning function according to an embodiment of the present invention; Figure 8is a structural schematic diagram of a part of the structure of a tubular heat exchanger with a vibration cleaning function according to an embodiment of the present invention; Fig. 9 is a structural schematic diagram of a part of the structure of a tubular heat exchanger with a vibration cleaning function according to an embodiment of the present invention; Fig.10 is a structural schematic diagram of a part of the structure of a tubular heat exchanger with a vibration cleaning function according to an embodiment of the present invention; Fig.11 It is a structural schematic diagram of a partial structure of a tubular heat exchanger with a vibration cleaning function according to an embodiment of the present invention. Description of Reference Numerals

[0014] exist Figure 1-Figure 11 Among them, the dust cleaning trolley 1-1; the main shaft 2-1; the bearing seat 2-2; the eccentric wheel 2-3; the clamping plate 2-4; the driving motor 2-5; the transmission shaft 2-6; the driving shaft 2-7; the supporting frame 2-8; the guide plate 2-9; the upper fixing seat 2-10; the lower fixing seat 2-11; the bolt 2-12; the reset guide rod 2-13; the spring 2-14; the second supporting plate 2-15; the reset guide rod 2-16; the connecting frame 2-17; the tooth plate 2-18; the tooth plate mounting seat 2-19; ​​the end connecting plate 2-20; the supporting guide plate 2-21; the wheel 3-1; the wheel frame plate 3-2; the anti-drop straight hanging plate 3-3; the heat exchange tube 3-4; the reinforced heat exchange tube 3-5; the heat exchange tube box 3-6. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] The present invention provides a vibration mechanism of a heat exchanger cleaning device, comprising: a vibration component, the vibration component comprising: a bearing seat 2-2, a bearing structure, an eccentric wheel 2-3, a drive motor 2-5, a transmission shaft 2-6, a drive shaft 2-7, a second support plate 2-15, a lower fixed seat 2-11, an upper fixed seat 2-10, a bolt 2-12, a reset guide rod 2-13, a reset spring 2-14, a reset guide rod 2-16 and a guide plate 2-9.

[0017] Among them, the bearing seat 2-2 is fixedly supported on the support frame 2-8, and the bearing structure is installed on the bearing seat 2-2. The transmission shaft and the bearing structure on the support frame 2-8 match each other, and the transmission shaft is fixedly connected with the eccentric wheel 2-3, and the eccentric wheel 2-3 is supported on the main shaft 2-1 and matches with the main shaft 2-1. The driving motor 2-5 is located on the outside of the air preheater tube plate, and is connected to the driving shaft 2-7 through a coupling. The driving shaft 2-6 has a transmission hole, and the driving shaft 2-7 extends into the transmission hole and axially slides with the driving shaft 2-6; the front section of the driving shaft 2-7 is a cylindrical structure, and the rear section is a hexagonal structure, and the transmission hole is an inner hexagonal hole.

[0018] Among them, the support plate is supported on the support frame 2-8, the lower fixed seat 2-11 and the upper fixed seat 2-10 are respectively located on the lower and upper sides of the main shaft 2-1, and the upper fixed seat 2-10 and the lower fixed seat 2-11 are fixedly connected by bolts 2-12, so as to realize the connection between the upper fixed seat 2-10, the lower fixed seat 2-11 and the main shaft 2-1. The reset guide rod 2-13 is located at the lower side of the lower fixed seat 2-11 and is fixedly connected to the lower fixed seat 2-11, and the lower end of the reset guide rod 2-13 passes through the second support plate 2-15. The reset spring 2-14 is sleeved on the outer periphery of the reset guide rod 2-13 and is located between the second support plate 2-15 and the lower fixed seat 2-11. The reset guide rod 2-16 is located on the upper side of the upper fixed seat 2-10 and is fixedly connected to the upper fixed seat 2-10, one end of the guide plate 2-9 is fixedly connected to the upper side of the clamping plate 2-4, and the reset guide rod 2-16 passes through the guide plate 2-9 and slides with the guide plate 2-9.

[0019] When in use, the motor rotates to drive the eccentric wheel 2-3 to rotate. Every time the eccentric wheel 2-3 rotates one circle, it turns to the distal end of the eccentric section to press the main shaft 2-1 downward. The main shaft 2-1 slides down a distance along the U-shaped groove on the upper part of the clamping plate 2-4, and the reset spring 2-14 is compressed; then it turns to the proximal end of the eccentric section, and the main shaft 2-1 is extended and pushed by the reset spring 2-14, and slides upward along the U-shaped groove to reset. As a result, the main shaft 2-1 reciprocates up and down with the rotation of the motor. The movement distance is the eccentric distance of the eccentric section, and the frequency of the reciprocating motion is determined by the motor speed. In this way, several cleaning tooth plates fixed to the main shaft 2-1 reciprocate up and down with the rotation of the motor, and the saw teeth on them can cut the accumulated dust and break it off. The cutting stroke of the cleaning tooth plate on the accumulated dust can be set by setting the eccentric distance of the eccentric section, and the reciprocating cutting frequency and working cycle of the cleaning tooth plate can be adjusted by adjusting the start / stop / speed of the motor during use.

[0020] Optimally, the eccentric wheel 2-3 is fixed on the transmission shaft 2-6.

[0021] Optimally, the sliding transmission of the regular hexagonal shaft / hole can adopt non-circular cross-sections such as triangular prism cross-sections, star cross-sections, and elliptical cross-sections. A simpler method is to use a flat key or a spline.

[0022] Optimized, an anti-wear spacer is added between the main shaft 2-1 and the U-shaped groove to reduce wear and increase service life.

[0023] Optimally, the main shaft 2 - 1 is not limited to a cylinder.

[0024] The optimized outer edge surface of the eccentric section is in an arc shape, which increases the contact area with the main shaft 2-1 section and reduces wear.

[0025] Optimally, the eccentric section is composed of an inner eccentric section, a bearing, and an outer ring. The inner hole of the bearing is sleeved on the outer edge of the inner eccentric section, and the inner hole of the outer ring is sleeved on the outer ring of the bearing.

[0026] Optimally, the two monomers (eccentric wheels 2-3) are connected in series and driven by the same motor, and the main shaft 2-1 can perform synchronous or asynchronous up and down reciprocating motion.

[0027] The present invention provides a tubular heat exchanger with a vibration cleaning function, comprising: the aforementioned vibration assembly and a heat exchange tube box 3-6, wherein the heat exchange tube box 3-6 is provided with a plurality of heat exchange tubes 3-4, wherein two heat exchange tubes on the top of the heat exchange box are reinforced heat exchange tubes 3-5, whose wall thickness can be 3-5 times that of ordinary heat exchange tubes 3-4, whose appearance is the same as that of ordinary heat exchange tubes 3-4, and whose installation method is the same as that of ordinary heat exchange tubes 3-4, and on which a dust cleaning trolley 1-1 is placed, and a wheel 3-1 is provided on the dust cleaning trolley 1-1, and the wheel 3-1 rolls on the reinforced heat exchange tube 3-5, and the wheel 3-1 is connected to the wheel frame plate 3-2 through a wheel axle, and the wheel frame plate 3-2 is connected to the card plate 2-4 through a pad, and the card plate 2-4 is fixed to the support frame 2-8. The trolley is also connected to an anti-slip straight hanging plate 3-3, and the anti-slip straight hanging plate 3-3 is sleeved on the reinforced heat exchange tube 3-5.

[0028] The support frame 2-8 is connected to the connecting frame 2-17, and a main shaft 2-1 is arranged above the support frame 2-8, and a plurality of tooth plate assemblies are arranged at intervals on the main shaft 2-1. The support frame 2-8 can be driven to move along the reinforced heat exchange tube 3-5 by a driving device such as a cylinder or a motor, so that the tooth plate assembly can be translated between the heat exchanger tubes to achieve dust cleaning operation.

[0029] The tooth plate assembly includes a tooth plate mounting seat 2-19 and a tooth plate 2-18. The tooth plate mounting seat 2-19 is fixedly connected to the main shaft 2-1, and the tooth plate 2-18 is fixedly connected to the tooth plate mounting seat 2-19. The tooth plate 2-18 has a self-cleaning function, and a cleaning sawtooth is provided on the tooth plate 2-18, and the sawtooth of the cleaning sawtooth on the tooth plate 2-18 faces away from the tooth plate mounting seat 2-19.

[0030] When in use, the rotation of the eccentric wheel 2-3 causes the tooth plate 2-18 to continuously move up and down, shearing the dust on the heat exchange tube 3-4, resulting in a better cleaning effect. In addition, the equipment occupies very little space outside the furnace and has better adaptability.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vibration mechanism of a heat exchanger cleaning device, comprising: A vibration assembly, characterized in that: the vibration assembly includes a transmission shaft, an eccentric wheel is arranged on the transmission shaft, the eccentric wheel is supported on the main shaft of the vibration assembly for up and down vibration, a spring for resetting the main shaft is arranged under the main shaft, a tooth plate is connected to the main shaft, the tooth plate is arranged between the heat exchange tubes, and the vibration assembly is arranged on a support frame.

2. A tubular heat exchanger with a vibration cleaning function, comprising: A vibration assembly and a heat exchange tube box, characterized in that: a track is provided on the heat exchange tube box, a dust cleaning trolley that reciprocates along the track is provided on the track, a support frame is provided on the dust cleaning trolley, and a vibration assembly that reciprocates in the vertical direction and a driving device that drives the dust cleaning trolley to move in the horizontal direction are provided on the support frame.

3. The tubular heat exchanger with vibration cleaning function according to claim 2, characterized in that: The track is a reinforced heat exchange tube.

4. The tubular heat exchanger with vibration cleaning function according to claim 2, characterized in that: The heat exchange tube box is provided with a plurality of heat exchange tubes.

5. The tubular heat exchanger with vibration cleaning function according to claim 2, characterized in that: A dust cleaning trolley is arranged on the track, and wheels are arranged on the dust cleaning trolley. The wheels are connected to a wheel frame plate through a wheel axle, and the wheel frame plate is connected to a clamping plate through a cushion block, and the clamping plate is fixed on a supporting frame.

6. The tubular heat exchanger with vibration cleaning function according to claim 2, characterized in that: The vibration component includes a transmission shaft, an eccentric wheel is arranged on the transmission shaft, the eccentric wheel is pressed on the main shaft of the vibration component for up and down vibration, the main shaft is connected with a tooth plate, the tooth plate is arranged between the heat exchange tubes, and the vibration component is arranged on a support frame.

7. The tubular heat exchanger with vibration cleaning function according to claim 6, characterized in that: The vibration assembly includes a main shaft, an upper fixed seat and a lower fixed seat are arranged on the upper and lower sides of the main shaft, the upper fixed seat and the lower fixed seat are connected to each other, a reset guide rod is connected to the lower fixed seat, the lower end of the reset guide rod passes through a second support plate, and the second support plate is arranged on the support frame.

8. The tubular heat exchanger with vibration cleaning function according to claim 6, characterized in that: The transmission shaft is connected to the motor, and a reset spring is sleeved on the outer side of the reset guide rod.

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