Elastic vibration device

Abstract

The present invention relates to an elastic rapping device, belonging to the technical field of tubular heat exchange, wherein the tube bundle in the furnace body is divided into a plurality of rapping groups along the length direction of the furnace body, the rapping groups are connected by tube bundle connecting plates, and each rapping group is provided with a rapping rod that crosses the furnace body; the rapping rod is connected to the tube bundle connecting plate, and both ends are supported on supports located outside the furnace body, and one end is provided with a rapper that acts on the rapping rod. The rapping rod of the present invention is arranged to cross the furnace body, and compared with the prior art, the same tube bundle only needs half the rappers, which not only saves investment costs, but also reduces floor space.

Description

Technical Field

[0001] The invention belongs to the technical field of tubular heat exchange and relates to an elastic rapping device. Background Art

[0002] For tubular heat exchange equipment that processes flue gas containing adhesive components, such as boilers and heat exchangers, the adhesive dust in the flue gas will adhere to the surface of the tube, which may reduce the heat recovery rate or cause equipment blockage and affect the normal operation of the equipment. To solve the problem of dust accumulation in tubes or tube bundles, a dust cleaning device is needed, and the elastic vibration device is one of the most effective dust cleaning devices.

[0003] For tubular heat exchange equipment that uses an elastic rapping device for dust cleaning, the tube bundles of the tubular heat exchange equipment are usually divided into several rapping groups along the length and width of the equipment using a tube bundle connecting plate, and then a rapping rod is set for each tube bundle to connect with the tube bundle connecting plate. The elastic rapping device strikes the rapping rod through an elastic rapper to apply a rapping force to the dusty tube bundle, loosening and falling off the dust attached to the outer surface of the tube bundle, thereby removing the dust on the tube bundle and keeping the outer surface of the tube bundle clean.

[0004] Taking a group of evaporators in the convection heat exchange zone of a horizontal boiler as an example, the traditional elastic rapping device is arranged as follows: the evaporator tube bundle is symmetrically divided into two parts along the length of the equipment, and multiple groups are set in each part. For each group, the rapping rod is fixed to the tube bundle connection plate inside the boiler by welding or bundling, one end of which remains inside the boiler, and the other end passes through the boiler furnace wall and is exposed outside the boiler. The entire rapping rod is supported by the tube bundle in the furnace, and the elastic rapper exerts a rapping force on the dust-accumulated tube bundle by knocking on the end of the rapping rod that is exposed outside the equipment. This arrangement has the following shortcomings:

[0005] First, the traditional elastic rapping device is arranged symmetrically on both sides, with a large number of devices, a large floor space, and high investment and maintenance costs;

[0006] Secondly, the entire rapping rod is fixed on the connecting plate of the tube bundle inside the boiler. The tube bundle usually adopts a suspension structure, and the rapping rod will move with the tube bundle as the temperature of the medium in the boiler changes. This will not only cause the rapping force of the elastic rapper to be eccentric, but if the furnace wall opening is small, it will also cause the rapping rod to contact the furnace wall, and the friction between the rapping rod and the furnace wall will affect the rapping effect and the life of the rapping rod. If the furnace wall opening is large, it will increase the air leakage of the boiler, affecting the economy of the boiler;

[0007] Third, the rapping rod is fixed to the tube bundle and one end is exposed outside the furnace. Due to the small spacing between the tube bundles, the installation, maintenance and replacement of the rapping rod and the replacement of the entire tube bundle are very difficult. Summary of the invention

[0008] In view of this, the purpose of the present application is to provide an elastic rapping device to reduce equipment investment and reduce floor space.

[0009] In order to achieve the above object, the present invention provides the following technical solutions:

[0010] An elastic rapping device divides the tube bundles in the furnace body into multiple rapping groups along the length direction of the furnace body. The rapping groups are connected by tube bundle connecting plates. Each rapping group is correspondingly provided with a rapping rod that crosses the furnace body. The rapping rod is connected to the tube bundle connecting plate, and its two ends are supported on supports located outside the furnace body. One end is provided with a rapper that acts on the rapping rod.

[0011] Optionally, the rappers are all located on the same side of the furnace body.

[0012] Optionally, the rapping rod is located above the tube bundle connecting plate, and a comb plate is provided at a position of the rapping rod corresponding to the tube bundle connecting plate, the upper end of the comb plate is fixedly connected to the rapping rod, and the lower end is plugged into the tube bundle connecting plate.

[0013] Optionally, the lower end of the comb-shaped plate has a slot with an opening facing downward and capable of accommodating the tube bundle connecting plate, and the comb-shaped plate is plugged into the tube bundle connecting plate through the slot.

[0014] Optionally, the slot is V-shaped or U-shaped.

[0015] Optionally, the support is provided with a guide hole, and the rapping rod passes through the guide hole and is slidably connected thereto.

[0016] Optionally, the support is a split structure, including an upper half and a lower half that are arranged up and down and detachably connected, and a guide hole matching the rapping rod is formed between the upper half and the lower half.

[0017] Optionally, an inspection door is provided at a position of the furnace body corresponding to the rapping rod. The inspection door is a split structure, including two parts arranged up and down or left and right, and a rapping rod avoidance hole is formed between the two parts.

[0018] Optionally, each rapping group includes 4 to 6 heat exchange tube strokes, and the rapping rod is located in the middle of the rapping group.

[0019] The beneficial effects of the present invention are:

[0020] 1. The rapping rod of the present invention is arranged across the furnace body. Compared with the prior art, the same tube bundle only needs half the rappers, which not only saves investment costs but also reduces floor space.

[0021] 2. The connection mode between the rapping rod and the tube bundle of the present invention is plug-in. By changing the connection mode between the rapping rod and the tube bundle, the influence of the thermal displacement of the tube bundle on the rapping rod is weakened, and the support is used to bear the gravity of the rapping rod and the radial thrust of the tube bundle on the rapping rod, thereby ensuring that the rapping is not eccentric and enhancing the rapping effect of the rapping device.

[0022] 3. The present invention supports both ends of the rapping rod on supports located outside the furnace body, thereby eliminating friction with the furnace body and increasing the service life of the rapping rod.

[0023] 4. The elastic rapping device is very convenient to transport, install, overhaul and replace, which greatly reduces the installation, overhaul and replacement time, and also greatly reduces the workload, thereby reducing the impact on the operation of the main equipment and improving efficiency.

[0024] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0026] Figure 1 It is a structural schematic diagram of an elastic rapping device of the present invention;

[0027] Figure 2 for Figure 1 AA section view;

[0028] Figure 3 for Figure 2 A partial enlarged view of location Ⅰ.

[0029] Reference numerals: rapper 1, support 2, inspection door 3, rapping rod 4, comb plate 5, tube bundle connecting plate 6. DETAILED DESCRIPTION

[0030] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0031] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] See also Figure 1 to Figure 3 , an elastic rapping device, which divides the tube bundle in the furnace body into multiple rapping groups along the length direction of the furnace body, each rapping group is connected by a tube bundle connecting plate 6, and each rapping group is correspondingly provided with a rapping rod 4 that crosses the furnace body, and the rapping rod 4 is connected to the tube bundle connecting plate 6. Both ends of the rapping rod 4 are supported on a support 2 located outside the furnace body, and one end of the rapping rod 4 is provided with a rapper 1 that acts on the rapping rod 4. The rapper 1 can be located on the same side of the furnace body or staggered on both sides of the furnace body. Preferably, the rapper 1 is located on the same side of the furnace body to facilitate maintenance and reduce the footprint.

[0034] In order to facilitate the installation and maintenance of the rapping rod 4, the rapping rod 4 of the present invention is located above the tube bundle connecting plate 6 and arranged crosswise therewith, and a comb plate 5 is provided at the position of the rapping rod 4 corresponding to the tube bundle connecting plate 6, and the upper end of the comb plate 5 is fixedly connected to the rapping rod 4, and the lower end is plugged with the tube bundle connecting plate 6. The comb plate 5 is plugged with the heat exchange tube, which not only facilitates the installation and maintenance of the rapping rod 4, but also reduces the influence of the thermal displacement of the tube bundle on the rapping rod 4.

[0035] Preferably, the lower end of the comb-shaped plate 5 has a slot with an opening facing downward and capable of accommodating the tube bundle connecting plate 6 , and the comb-shaped plate 5 is plugged into the tube bundle connecting plate 6 through the slot.

[0036] The slots of the comb plate 5 in the present invention are V-shaped or U-shaped, preferably V-shaped, which can not only make the heat exchange tube always contact with the rapping rod, but also further reduce the influence of the thermal displacement of the tube bundle on the rapping rod 4.

[0037] In order to prevent eccentric rapping, the present invention provides a guide hole on the support 2, and the rapping rod 4 passes through the guide hole and is slidably connected thereto.

[0038] In order to facilitate the installation and maintenance of the rapping rod 4, the support 2 of the present invention is a split structure, including an upper half and a lower half that are arranged up and down and detachably connected, and a guide hole matching the rapping rod 4 is formed between the upper half and the lower half.

[0039] In order to further facilitate the installation and maintenance of the rapping rod 4, the furnace body of the present invention is provided with an inspection door 3 at the position corresponding to the rapping rod 4, and the inspection door 3 can allow the rapping rod 4 equipped with the comb-shaped plate 5 to pass through. The inspection door 3 is a split structure, including two parts arranged up and down or left and right, and a rapping rod avoidance hole is formed between the two parts. The aperture of the rapping rod avoidance hole is slightly larger than the outer diameter of the rapping rod 4 to reduce air leakage of the furnace body.

[0040] Preferably, each rapping group includes 4 to 6 heat exchange tube strokes, and the rapping rod 4 is located in the middle of the rapping group.

[0041] The elastic rapping device of the present invention can not only reduce the number of rappers, but also enhance the rapping effect, extend the service life of the rapping rod, and facilitate the installation, maintenance and replacement of the rapping rod and the heat exchange tube bundle.

[0042] Example

[0043] An elastic rapping device includes a rapper 1, a support 2, an inspection door 3, a rapping rod 4, a comb plate 5, and a tube bundle connecting plate 6, wherein the support 2 uses a standard bearing seat to reduce costs and shorten the manufacturing cycle of the rapping device; the rapper 1 uses an elastic rapper. The rapper 1 is arranged on one side outside the furnace, the support 2 is arranged on both sides outside the furnace, the two ends of the rapping rod 4 pass through the inspection door 3 on the furnace wall and are installed on the support 2 on both sides of the furnace, and the comb plate 5 is welded to the rapping rod 4 and clamped with the tube bundle connecting plate 6. The rapping rod 4 is arranged across the furnace body, and the rapper is only arranged on one side outside the furnace. Compared with the traditional arrangement, the number of rappers is reduced by half. Since the rapping rod 4 is supported and limited by the support 2, the displacement of the rapping rod 4 caused by the temperature change of the medium such as flue gas in the tube bundle is effectively avoided, which not only solves the problem of eccentric rapping force in the prior art, enhances the rapping effect, but also prolongs the service life of the rapping rod 4. By clamping the comb plate 5 with the tube bundle connecting plate 6 and arranging the support 2 and the inspection door 3 into an upper and lower half structure, it is very convenient to extend the rapping rod 4 into and out of the equipment.

[0044] Specifically:

[0045] The rapper 1 is arranged on one side outside the furnace and fixed on the boiler platform beam. Its function is to provide rapping force for the equipment by striking the rapping anvil on the rapping rod 4 at a certain frequency;

[0046] The support 2 is provided with two for each rapping group and arranged on both sides of the furnace, and its function is to support the rapping rod 4 and absorb the thrust transmitted by the tube bundle through the rapping rod 4. The support 2 adopts an upper and lower half structure, which is convenient for the installation and replacement of the rapping rod 4.

[0047] Two inspection doors 3 are provided corresponding to the position of each rapping rod. The size of the inspection door 3 is determined according to the size of the rapping rod 4 and the comb plate 5. The inspection door 3 adopts a two-half structure to facilitate the installation and replacement of the rapping rod 4. A small hole is opened inside to ensure that the work is not affected and the air leakage is small. A corrosion-resistant heat-insulating layer is provided on the inner side of the inspection door 3.

[0048] A rapping rod 4 is provided in each rapping group, which crosses the furnace and is arranged on the support 2, with one end close to the rapper 1 and welded to the rapping anvil, and the other side being a free end.

[0049] The comb-shaped plate 5 is welded to the rapping rod 4 on one side and clamped to the tube bundle connecting plate 6 on the other side. The rapping force of the rapper is transmitted to the tube bundle connecting plate 6 through the comb-shaped plate 5 and then to the tube bundle.

[0050] The tube bundle connecting plate 6 is welded on multiple trips of each heat exchange tube. Its function is to group the tube bundle as needed and receive the rapping force of the comb plate 5 to drive the tube bundle to vibrate, loosen and fall off the dust attached to the outer surface of the tube bundle, thereby removing the dust on the tube bundle.

[0051] When installing the elastic rapping device, the tube bundle connecting plate 6 is first installed before the tube bundle enters the furnace. After the tube bundle is installed in place, the rapping rod 4 welded with the comb plate 5 extends from one side outside the furnace into the furnace through the inspection door 3 and extends from the other side, and the comb plate 5 is locked with the tube bundle connecting plate 6. Finally, the support 2, the inspection door 3 and the rapping device (1) are installed in sequence. When replacing or inspecting the rapping rod 4 or when the rapping rod 4 needs to be pulled out due to tube bundle replacement, it is only necessary to remove the upper half of the support 2 and the inspection door 3, lift the rapping rod 4 upward to separate the comb plate 5 from the tube bundle connecting plate 6, and then pull the rapping rod 4 with the comb plate 5 from the side of the furnace where the rapping device is not installed.

[0052] The present invention can be arranged on boilers and heat exchangers. Compared with common elastic rapping devices, the elastic rapping device has the characteristics of less number of rappers, good rapping effect, long service life of the rapping rod, and convenient installation, maintenance and replacement of the rapping rod and the heat exchange tube bundle.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. An elastic rapping device, characterized in that: The tube bundles in the furnace body are divided into multiple rapping groups along the length direction of the furnace body. The rapping groups are connected by tube bundle connecting plates. Each rapping group is provided with a rapping rod that crosses the furnace body. The rapping rod is connected to the tube bundle connecting plate, and both ends are supported on supports located outside the furnace body. One end is provided with a rapper that acts on the rapping rod. The support is provided with a guide hole, and the rapping rod passes through the guide hole and is slidably connected thereto; The support is a split structure, including an upper half and a lower half which are arranged up and down and detachably connected, and a guide hole matching the rapping rod is formed between the upper half and the lower half; The rapping rod is located above the tube bundle connecting plate. A comb plate is provided at the position of the rapping rod corresponding to the tube bundle connecting plate. The upper end of the comb plate is fixedly connected to the rapping rod, and the lower end is plugged into the tube bundle connecting plate.

2. An elastic rapping device according to claim 1, characterized in that: The lower end of the comb-shaped plate is provided with a slot which opens downward and can accommodate the tube bundle connecting plate, and the comb-shaped plate is plugged with the tube bundle connecting plate through the slot.

3. An elastic rapping device according to claim 2, characterized in that: The slot is V-shaped or U-shaped.

4. An elastic rapping device according to claim 1, characterized in that: An inspection door is provided at the position of the furnace body corresponding to the rapping rod. The inspection door is a split structure, including two parts arranged up and down or left and right, and a rapping rod avoidance hole is formed between the two parts.

5. An elastic rapping device according to claim 1, characterized in that: Each rapping group includes 4 to 6 heat exchange tube strokes, and the rapping rod is located in the middle of the rapping group.

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