Energy-saving and efficient blowing and drying device for air pre-heater

Abstract

The invention relates to the technical field of air pre-heater cleaning, in particular to an energy-saving and efficient air pre-heater purging and drying device which comprises a purging and drying assembly, a purging part and a heat transfer part arranged on the purging part. The dismounting and mounting assembly comprises a bearing piece arranged on the purging piece, a locking piece arranged on the bearing piece, a connecting piece arranged on the bearing piece and a plugging piece arranged on the purging piece; and the sealing assembly comprises a driving piece arranged on the blowing piece, a rotating piece arranged on the blowing piece and a clinging piece arranged on the rotating piece. Heat generated by waste gas in a thermal power plant is recycled through the heat transmitter, unnecessary energy waste is reduced, the spiral pipe is arranged to improve the heat transfer efficiency, uniform drying of the air pre-heater is facilitated, the spiral pipe can be rapidly disassembled and assembled, dust in the spiral pipe can be cleaned, the stable heat transfer efficiency is kept, the manhole door is sealed through the attaching piece, and the service life of the manhole door is prolonged. And impurities in the environment are prevented from being brought into the air pre-heater by the fan to cause blockage.

Description

Technical Field

[0001] The invention relates to the technical field of air preheater cleaning, and in particular to an energy-saving and efficient air preheater purging and drying device. Background Art

[0002] In a thermal power plant, the air preheater is one of the indispensable equipment. The air preheater mainly transfers the heat carried in the flue gas discharged from the tail flue of the boiler to the air before entering the boiler through heat transfer elements such as heat sinks or heat pipes, thereby preheating the air to a certain temperature. This process not only increases the inlet air temperature of the boiler, but also reduces the exhaust gas temperature, thereby improving the thermal efficiency and combustion efficiency of the boiler.

[0003] In reality, with the long-term operation of the generator set, a large amount of dust will accumulate on the heat exchanger plates of the air preheater, affecting the heat exchange effect of the air preheater. At the same time, it will cause ventilation obstruction, affecting the safe operation of the blower and the primary fan, and even causing the air preheater to trip due to current overlimit, causing unplanned shutdown of the unit, and having an adverse effect on the stable operation of the power grid. At present, the air preheater is dried after flushing by placing a temporary axial flow fan at the maintenance manhole door for ventilation. The debris in the environment may be brought into the air preheater by the fan, causing blockage, affecting the safe operation after startup. In addition, because the low temperature environment is not conducive to ventilation, a temporary baking lamp will be installed near the maintenance manhole door for heating in reality, but it can only be heated locally, the effect is poor, and it requires a lot of energy. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and invention title of this application to avoid blurring the purpose of this section, specification abstract and invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the fact that the debris in the above environment may be brought into the air preheater by the fan and cause blockage, and the problem of poor effect and energy consumption caused by installing a baking lamp, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide an energy-saving and efficient air preheater purge and drying device.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: an energy-saving and efficient air preheater purging and drying device, comprising a purging and drying assembly, comprising a purging part, and a heat transfer part arranged on the purging part; a disassembly and assembly assembly, comprising a receiving part arranged on the purging part, a locking part arranged on the receiving part, a connecting part arranged on the receiving part, and a sealing part arranged on the purging part; and a sealing assembly, comprising a driving part arranged on the purging part, a rotating part arranged on the purging part, and a tight part arranged on the rotating part.

[0008] As a preferred solution of the energy-saving and efficient air preheater purge and drying device described in the present invention, the purge component includes a base, a cylinder arranged on the base, a filter arranged on the cylinder, a first motor arranged in the cylinder, a rotating shaft arranged on the output end of the first motor, and blades arranged on the rotating shaft.

[0009] As a preferred solution of the energy-saving and efficient air preheater purge and drying device of the present invention, the heat transfer element includes a base, a heat transfer device arranged on the base, and a spiral tube arranged on the heat transfer device.

[0010] As a preferred solution of the energy-saving and efficient air preheater purging and drying device described in the present invention, the receiving part includes a connecting cylinder arranged on the base, a hole opened on the connecting cylinder, a pressing cylinder arranged in the connecting cylinder, and a card slot opened on the pressing cylinder.

[0011] As a preferred solution of the energy-saving and efficient air preheater purge and drying device described in the present invention, the locking member includes a clamping rod arranged on the connecting tube, a locking rod arranged on the clamping rod, a first spring arranged on the clamping rod, and a clamping block arranged at the end of the first spring.

[0012] As a preferred solution of the energy-saving and efficient air preheater purging and drying device described in the present invention, the connecting part includes a connecting seat arranged in the connecting cylinder, a clamping plate arranged on the connecting seat, and a rubber pad arranged on the clamping plate.

[0013] As a preferred solution of the energy-saving and efficient air preheater purging and drying device of the present invention, the blocking member includes a cover plate arranged on the base and a perforated plug plate arranged on the base.

[0014] As a preferred solution of the energy-saving and efficient air preheater purging and drying device of the present invention, the driving member includes a second motor arranged on the base, and a gear arranged on the output end of the second motor.

[0015] As a preferred solution of the energy-saving and efficient air preheater purge and drying device described in the present invention, the rotating part includes a rotating plate arranged on the cylinder, a tooth groove opened on the rotating plate, and a lever arranged on the rotating plate.

[0016] As a preferred solution of the energy-saving and efficient air preheater purging and drying device described in the present invention, the clamping member includes a top rod arranged on the push rod, a connecting rod arranged in the top rod, a second spring arranged on the top rod, and a rubber sheet sleeved on the second spring.

[0017] The beneficial effects of the present invention are as follows: the present invention recycles the heat generated in the exhaust gas in the thermal power plant by arranging a heat transfer device, thereby effectively reducing unnecessary energy waste, and improves the heat transfer efficiency by arranging a spiral tube, which helps to evenly dry the air preheater. The connecting parts are driven by the receiving parts to enable the spiral tube to be quickly disassembled and assembled, and the dust in the spiral tube is cleaned in time to maintain a stable heat transfer efficiency. The driving parts drive the rotating parts to rotate, so that the sealing parts seal the manhole door, thereby preventing debris in the environment from being brought into the air preheater by the fan to cause blockage, affecting the safe operation after startup. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 It is an overall schematic diagram of an energy-saving and efficient air preheater purge and drying device.

[0020] Figure 2 The present invention is a schematic diagram of a purge component of an energy-saving and efficient air preheater purge and drying device.

[0021] Figure 3 The schematic diagram is a disassembly and assembly component of an energy-saving and efficient air preheater purge and drying device.

[0022] Figure 4 The present invention is a schematic diagram of a receiving part and a locking part of an energy-saving and efficient air preheater purge and drying device.

[0023] Figure 5 It is a cross-sectional view of an energy-saving and efficient air preheater purge and drying device.

[0024] Figure 6 for Figure 5 Enlarged view of point A in .

[0025] Figure 7The present invention is a schematic diagram of the driving parts and rotating parts of an energy-saving and efficient air preheater purge and drying device.

[0026] Figure 8 The present invention is a schematic diagram of a sealing component of an energy-saving and efficient air preheater purge and drying device.

[0027] Fig. 9 The present invention is a schematic diagram of a fastening part of an energy-saving and efficient air preheater purge and drying device. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0031] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0032] Example 1

[0033] Reference Figure 1-Figure 9, which is the first embodiment of the present invention, and provides an energy-saving and efficient air preheater purging and drying device, including a purging and drying assembly 100, including a purging member 101, which blows air into the air preheater through a manhole door, and a heat transfer member 102 arranged on the purging member 101, which is used to recycle the waste gas from the thermal power plant; a disassembly assembly 200, including a receiving member 201 arranged on the purging member 101, which is used to receive a locking member 202 and a connecting member 203, a locking member 202 arranged on the receiving member 201, which is used to lock the connecting member 203, and a connecting member 203 arranged on the receiving member 201, which is connected to the heat transfer member 102. The purge member 102 is connected and fixed, and the blocking member 204 is arranged on the purge member 101, which blocks the gap of the purge member 101 after the disassembly assembly 200 is removed, so that the purge member 101 can be used alone; and the sealing assembly 300, including a driving member 301 arranged on the purge member 101, which provides a driving force for the rotating member 302, the rotating member 302 arranged on the purge member 101, drives the clamping member 303 to open and tighten, and the clamping member 303 arranged on the rotating member 302, which is close to the edge of the manhole door for sealing, to prevent debris in the environment from being brought into the air preheater by the purge member 101 to cause blockage.

[0034] Specifically, the purge member 101 includes a base 101a, a cylinder 101b fixedly connected to the base 101a, a filter 101c fixedly connected to the end of the cylinder 101b, a first motor 101d arranged in the cylinder 101b, a rotating shaft 101e fixedly connected to the output end of the first motor 101d, and a blade 101f fixedly connected to the rotating shaft 101e. The base 101a is used to receive the cylinder 101b, the cylinder 101b is used to accommodate the first motor 101d, the rotating shaft 101e and the blade 101f, two filter screens 101c are provided and are symmetrically arranged, the rotating shaft 101e rotates as the first motor 101d is started, and a plurality of blades 101f are provided and are evenly distributed around the circumference.

[0035] Furthermore, the heat transfer element 102 includes a base 102a, a heat transfer device 102b fixedly connected to the base 102a, and a spiral tube 102c fixedly connected to the heat transfer device 102b. The base 102a provides support for the heat transfer device 102b. The heat transfer device 102b absorbs exhaust gas from the thermal power plant and absorbs heat for transmission. One end of the spiral tube 102c away from the heat transfer device 102b is connected to the inside of the cylinder 101b for transporting hot gas.

[0036] Operation process: when the air preheater needs to be purged and dried, the whole device is placed at the entrance of the manhole door, and the first motor 101d is started. The shaft 101e drives the blade 101f to rotate as the first motor 101d is started, and the air preheater is blown through the manhole door. The hot air transmitted by the heat transferer 102b increases the turbulent speed through the spiral tube 102c. The turbulent state is conducive to the transfer of heat because the turbulence can enhance the mixing and heat transfer inside the fluid. Under the blowing of the air, the hot air is driven to be blown into the air preheater for purging and drying, which effectively reduces unnecessary energy waste.

[0037] Example 2

[0038] Reference Figure 3-Figure 6 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the receiving member 201 includes a connecting tube 201a rotatably connected to one side of the base 101a, a hole 201b provided on the connecting tube 201a, a pressing tube 201c slidably connected in the connecting tube 201a, and a slot 201d provided on the pressing tube 201c. The connecting tube 201a is used to receive the pressing tube 201c, the hole 201b and the slot 201d are both used to connect the locking member 202, the end of the pressing tube 201c has an inclined surface, the size of the pressing tube 201c is adapted to the size of the opening of the connecting tube 201a, and two holes 201b and two slots 201d are provided and are symmetrically arranged.

[0039] Specifically, the locking member 202 includes a clamping rod 202a rotatably connected to the outside of the connecting tube 201a, a locking rod 202b rotatably connected to the end of the clamping rod 202a, a first spring 202c fixedly connected to the end of the clamping rod 202a away from the locking rod 202b, and a block 202d fixedly connected to the end of the first spring 202c. The clamping rod 202a is used to drive the first spring 202c and the block 202d to move. There are two clamping rods 202a and they are symmetrically arranged. A connecting shaft is provided at the intersection of the two clamping rods 202a. The locking rod 202b is used to lock the two clamping rods 202a to prevent them from opening. The first spring 202c provides driving force for the block 202d. The block 202d is stuck in the slot 201d. There are two first springs 202c and the block 202d and they are symmetrically arranged, corresponding to the hole 201b and the slot 201d.

[0040] Furthermore, the connecting member 203 includes a connecting seat 203a fixedly connected to the connecting tube 201a, a clamping plate 203b rotatably connected to the connecting seat 203a, and a rubber pad 203c fixedly connected to the clamping plate 203b. The connecting seat 203a is hollow and used to receive the clamping plate 203b. The end of the clamping plate 203b is provided with an inclined surface. There are multiple clamping plates 203b and they are evenly distributed around the circumference. The multiple clamping plates 203b are connected by rubber. The rubber pad 203c is used to seal the spiral tube 102c.

[0041] Furthermore, the sealing member 204 includes a cover plate 204a rotatably connected to one side of the base 101a, and a perforated bolt plate 204b fixedly connected to one side of the base 101a. The cover plate 204a is used to seal the gaps on the base 101a and the cylinder 101b after the disassembly assembly 200 is removed, and the perforated bolt plate 204b is used to fix the rotated cover plate 204a.

[0042] The rest of the structure is the same as that of Example 1.

[0043] Operation process: When the heat transfer element 102 needs to be installed, the end of the spiral tube 102c is inserted into the connecting tube 201a. As the pressing tube 201c is pressed, the block 202d moves outward in the hole 201b under the extrusion of the pressing tube 201c, and the first spring 202c is tightened. When it reaches a certain degree, under the thrust of the first spring 202c, the block 202d is inserted into the slot 201d to lock the pressing tube 201c. Because of the pressing of the pressing tube 201c and the extrusion of the inclined surface of the end of the pressing tube 201c, the multiple clamping plates 203b are tightened on the connecting seat 203a, and the spiral tube 102c is sealed by the rubber pad 203c fixed thereon to prevent When the hot air is lost, the locking rod 202b is rotated to cancel the lock of the two clamping rods 202a, and the ends of the two clamping rods 202a are pinched. The two clamping rods 202a drive the block 202d through the first spring 202c to cancel the lock of the pressing cylinder 201c, thereby realizing the rapid disassembly and assembly of the spiral tube 102c. After the overall disassembly and assembly component 200 is removed, the cover plate 204a is rotated, and the cover plate 204a is fixed by the perforated bolt plate 204b to block the gaps on the base 101a and the cylinder 101b after the disassembly and assembly component 200 is removed, so that the purge component 101 can also be used alone. The rapid disassembly and assembly of the spiral tube can clean the dust in the spiral tube 102c in time and maintain a stable heat transfer efficiency.

[0044] Example 3

[0045] Reference Figure 7-Figure 9, which is the third embodiment of the present invention. This embodiment is different from the above embodiments in that: the driving member 301 includes a second motor 301a fixedly connected to one side of the base 101a, and a gear 301b fixedly connected to the output end of the second motor 301a. The second motor 301a provides driving force for the gear 301b, and the gear 301b is used to drive the rotating member 302 to rotate.

[0046] Specifically, the rotating member 302 includes a rotating plate 302a rotatably connected to the end of the cylinder 101b, a tooth groove 302b provided on the rotating plate 302a, and a lever 302c rotatably connected to the rotating plate 302a. The rotating plate 302a is used to receive the lever 302c. The gear 301b meshes with the tooth groove 302b. The lever 302c is arranged in an arc shape. The lever 302c is used to drive the clamping member 303 to open and tighten. Two levers 302c are arranged and are evenly distributed around the circumference.

[0047] Furthermore, the clamping member 303 includes a push rod 303a rotatably connected to the end of the lever 302c, a connecting rod 303b slidably connected to the push rod 303a, a second spring 303c fixedly connected to the outside of the push rod 303a, and a rubber sheet 303d sleeved on the second spring 303c. The end of the lever 302c away from the rotating plate 302a is rotatably connected to the push rod 303a. The push rod 303a is provided with multiple push rods 303a and is evenly distributed around the circumference. Corresponding to the lever 302c, the connecting rod 303b is used to connect the multiple push rods 303a. The second spring 303c provides thrust for the rubber sheet 303d. The second spring 303c is provided with multiple push rods 303a and is evenly distributed around the circumference. The rubber sheet 303d is fixedly connected to the push rod 303a. The rubber sheet 303d seals the manhole door.

[0048] The rest of the structure is the same as that of Example 2.

[0049] Operation process: when the second motor 301a is started, the gear 301b drives the rotating plate 302a to rotate as the second motor 301a is started. When the rotating plate 302a rotates, the multiple levers 302c rotatably connected thereto perform an opening and contraction movement. The levers 302c drive the push rods 303a to perform an opening and contraction movement. The multiple push rods 303a are opened, and under the thrust of the second spring 303c, the rubber sheet 303d seals the manhole door to prevent debris in the environment from being brought into the air preheater by the fan to cause blockage, thereby affecting the safe operation after startup.

[0050] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be changed or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0051] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0052] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions 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 solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An energy-saving and efficient air preheater purge and drying device, characterized in that: include, A purge and drying assembly (100) comprises a purge member (101) and a heat transfer member (102) disposed on the purge member (101); A disassembly assembly (200), comprising a receiving member (201) arranged on the purge member (101), a locking member (202) arranged on the receiving member (201), a connecting member (203) arranged on the receiving member (201), and a blocking member (204) arranged on the purge member (101); and, The sealing assembly (300) comprises a driving member (301) arranged on the purge member (101), a rotating member (302) arranged on the purge member (101), and a pressing member (303) arranged on the rotating member (302).

2. The energy-saving and efficient air preheater purge and drying device according to claim 1 is characterized in that: The purge component (101) comprises a base (101a), a cylinder (101b) arranged on the base (101a), a filter (101c) arranged on the cylinder (101b), a first motor (101d) arranged in the cylinder (101b), a rotating shaft (101e) arranged on the output end of the first motor (101d), and a blade (101f) arranged on the rotating shaft (101e).

3. The energy-saving and efficient air preheater purge and drying device according to claim 2 is characterized in that: The heat transfer element (102) comprises a base (102a), a heat transfer device (102b) arranged on the base (102a), and a spiral tube (102c) arranged on the heat transfer device (102b).

4. The energy-saving and efficient air preheater purge and drying device according to claim 3 is characterized in that: The receiving component (201) comprises a connecting tube (201a) arranged on the base (101a), a hole (201b) provided on the connecting tube (201a), a pressing tube (201c) arranged in the connecting tube (201a), and a slot (201d) provided on the pressing tube (201c).

5. The energy-saving and efficient air preheater purge and drying device according to claim 4 is characterized in that: The locking member (202) comprises a clamping rod (202a) arranged on the connecting tube (201a), a locking rod (202b) arranged on the clamping rod (202a), a first spring (202c) arranged on the clamping rod (202a), and a clamping block (202d) arranged at the end of the first spring (202c).

6. The energy-saving and efficient air preheater purge and drying device according to claim 5, characterized in that: The connecting member (203) comprises a connecting seat (203a) arranged in the connecting tube (201a), a clamping plate (203b) arranged on the connecting seat (203a), and a rubber pad (203c) arranged on the clamping plate (203b).

7. The energy-saving and efficient air preheater purge and drying device according to claim 6, characterized in that: The blocking member (204) comprises a cover plate (204a) arranged on the base (101a), and a perforated bolt plate (204b) arranged on the base (101a).

8. The energy-saving and efficient air preheater purge and drying device according to claim 7, characterized in that: The driving member (301) comprises a second motor (301a) arranged on the base (101a), and a gear (301b) arranged on the output end of the second motor (301a).

9. The energy-saving and efficient air preheater purge and drying device according to claim 8, characterized in that: The rotating member (302) comprises a rotating plate (302a) arranged on the cylinder (101b), a tooth groove (302b) provided on the rotating plate (302a), and a lever (302c) arranged on the rotating plate (302a).

10. The energy-saving and efficient air preheater purge and drying device according to claim 9, characterized in that: The pressing member (303) comprises a push rod (303a) arranged on the shift rod (302c), a connecting rod (303b) arranged in the push rod (303a), a second spring (303c) arranged on the push rod (303a), and a rubber sheet (303d) sleeved on the second spring (303c).

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