CN114251970B - Mechanical pneumatic hybrid air preheater ash removal device - Google Patents
Mechanical pneumatic hybrid air preheater ash removal device Download PDFInfo
- Publication number
- CN114251970B CN114251970B CN202111577134.6A CN202111577134A CN114251970B CN 114251970 B CN114251970 B CN 114251970B CN 202111577134 A CN202111577134 A CN 202111577134A CN 114251970 B CN114251970 B CN 114251970B
- Authority
- CN
- China
- Prior art keywords
- air
- air preheater
- pipe
- heat exchange
- ash removal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000009960 carding Methods 0.000 claims abstract description 41
- 230000001360 synchronised effect Effects 0.000 claims abstract description 16
- 239000000428 dust Substances 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000007664 blowing Methods 0.000 description 8
- 238000007790 scraping Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000004071 soot Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/08—Non-rotary, e.g. reciprocated, appliances having scrapers, hammers, or cutters, e.g. rigidly mounted
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/16—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris
- F28G1/166—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris from external surfaces of heat exchange conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
- F28G15/04—Feeding and driving arrangements, e.g. power operation
- F28G15/06—Automatic reversing devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
Abstract
The invention discloses a mechanical pneumatic hybrid air preheater ash removal device, which comprises a driving device and an ash removal comb driven by the driving device, and is characterized in that: the ash removal comb comprises a wind collecting pipe which is transversely arranged, a group of carding plates which are arranged in parallel are vertically arranged in connection with the wind collecting pipe, and the thickness of each carding plate is matched with a pipe seam between adjacent longitudinal pipe groups of the heat exchange pipe of the air preheater; the carding plate is of a hollow structure, and the air collecting pipe is connected with the air supply pipe of the air compressor; the bottom of the carding plate is a closed end, and the carding plate is transversely provided with an air spraying port towards the heat exchange tube of the air preheater from top to bottom. The air and scratch synchronous mixing double-dredging device has the advantages that dust collection of all longitudinal and transverse pipe joints of the air preheater is timely cleaned in all directions without dead angles, the action is stable, the timing operation is performed, the heat exchange pipe is not damaged, the application range is wide, the heat exchange efficiency of the air preheater is improved, and the power consumption is reduced.
Description
Technical Field
The invention relates to an ash removal technology of a thermal power plant, in particular to an ash removal device of a mechanical and pneumatic hybrid air preheater.
Background
In the equipment of the thermal power plant, clean air and flue gas are subjected to heat exchange through the heat exchange tubes of the air preheater in order to fully save energy and utilize heat, but because the flue gas contains dust, deposited ash on the surfaces of the heat exchange tubes must be cleaned in time, otherwise, the heat exchange effect is affected. The existing ash removing device has several modes, such as an ash removing device of an air preheater with a patent publication number of CN210346463U, and comprises a scraping plate, wherein a through hole corresponding to the position of the air preheater pipe is formed in the scraping plate, the size of the through hole is larger than the outer diameter of the air preheater pipe, the air preheater pipe penetrates through the through hole, steel wire fixing holes are formed in the scraping plate, two ends of the air preheater pipe are fixed on an air preheater pipe plate, transmission devices are respectively arranged on the outer sides of the two air preheater pipe plates, one end of each steel wire is fixedly connected with the steel wire fixing hole, and the other end of each steel wire penetrates through the air preheater pipe plate to be connected with the transmission devices. The structure is assembled before the heat exchange tubes of the air preheater are installed, and because the number of the heat exchange tubes is large, a plurality of scraping plate holes are in clearance fit with the outer diameter of the air preheater, so that the manufacturing difficulty is high, and the scraping plates and the heat exchange tubes are easily blocked due to uncleanness in the operation process, so that the scraping plates and the heat exchange tubes are hard rubbed or damaged. The other mode is a mode of directly using air blowing and water flushing to be overlapped, such as an automatic ash deposition removing device of an air preheater designed by patent publication No. CN204611801U, which comprises the air preheater, wherein a hot end and a cold end of the air preheater are respectively connected with a soot blowing motor, one path of the soot blowing motor is connected with a pipeline led in from an outlet of a rear screen superheater, a soot blowing steam source pressure reducing device is arranged on the pipeline, the other path of the soot blowing motor is connected with a high-pressure flushing water pipeline, and a high-pressure pump is arranged on the high-pressure flushing water pipeline. The ash blowing pipe in the device cannot penetrate into the interior of the calandria, is neither comprehensive nor specific, so the ash blowing pipe is cleaned by high-pressure water, and the sewage is required to be treated by the high-pressure water.
Disclosure of Invention
The invention aims to solve the problems and provide a mechanical pneumatic hybrid type air preheater ash removing device which is used for mechanically cleaning longitudinal pipe seams and air-blowing cleaning transverse pipe seams and has the characteristics of synchronous air and scraping, omnibearing operation without dead angles, timing operation and the like.
The technical problems of the invention are mainly solved by the following technical proposal: the utility model provides a mechanical pneumatic hybrid air preheater ash handling equipment, includes drive arrangement, by the deashing comb of drive arrangement drive, its characterized in that: the ash removal comb comprises a wind collecting pipe which is transversely arranged, a group of carding plates which are arranged in parallel are vertically arranged in connection with the wind collecting pipe, and the thickness of each carding plate is matched with a pipe seam between adjacent longitudinal pipe groups of the heat exchange pipe of the air preheater; the carding plate is of a hollow structure, and the air collecting pipe is connected with the air supply pipe of the air compressor; the bottom end of the carding plate is a closed end, and the carding plate is transversely provided with an air spraying port towards the heat exchange tube of the air preheater from top to bottom; when the ash removal comb moves back and forth along the length direction of the heat exchange tube of the air preheater, the carding plate cleans the collected ash between the adjacent longitudinal tube groups of the heat exchange tube of the air preheater, and the cross wind sprayed by the air spraying port cleans the collected ash between the adjacent transverse tube groups of the heat exchange tube of the air preheater.
In the foregoing mechanical pneumatic hybrid air preheater ash removing device, preferably, two ends of the ash removing comb outside the heat exchange tube of the air preheater are provided with driving combined guiding mechanisms.
In the foregoing mechanical pneumatic hybrid air preheater ash removal device, preferably, the driving combination guiding mechanism includes a synchronous chain driven by a sprocket, the ash removal comb is fixed on an upper chain of the synchronous chain and vertically spans a lower chain and is provided with a support plate, and the support plate is matched with a support rail.
In the foregoing mechanical pneumatic hybrid air preheater ash removal device, preferably, the driving combination guide mechanism is located in a chain box, an elastic dust cover is arranged on the upper portion of the chain box, and a chute is arranged on the elastic dust cover along the movement direction of the ash removal comb.
In the foregoing mechanical pneumatic hybrid air preheater ash removing device, preferably, the driving device includes a motor, the motor drives a driving shaft through a transmission chain, and the driving shaft drives a driven shaft through a synchronous chain; the two ends of the air collecting pipe of the ash removing comb are respectively connected with the corresponding synchronous chains.
In the foregoing mechanical pneumatic hybrid air preheater ash removing device, preferably, the transverse cross-sectional surface of the carding plate has a flat elliptic tube structure.
In the foregoing mechanical pneumatic hybrid air preheater ash removing device, preferably, the air nozzle on the carding plate corresponds to a pipe seam between adjacent transverse pipe groups of the heat exchange pipe of the air preheater.
In the foregoing mechanical pneumatic hybrid air preheater ash removing device, preferably, the air spouts at the lateral sides of the carding plate are arranged in a single hole or multiple holes at the same horizontal position.
In the foregoing mechanical pneumatic hybrid air preheater ash removing device, preferably, the ash removing comb is provided with two or more parallel air collecting pipes, and each air collecting pipe is provided with a group of carding plates; the maximum length of the moving direction formed by two or more air collecting pipes is less than half of the length of the heat exchange pipe of the air preheater.
The heat exchange tube of the air preheater generally comprises a box body, heat tube bundles arranged in parallel in the box body and header plates at two ends, wherein the heat tube bundles arranged in parallel are arranged in parallel from top to bottom and from left to right, and the distances among the branch tubes are equal to form a rectangular (square) matrix with the cross section. According to the technical scheme, the ash removal comb which is used for cleaning the pipe seams among all longitudinal pipe groups of the air preheater heat exchange pipe like a comb is designed according to the structural characteristics of the air preheater heat exchange pipe, and meanwhile, the gaps among the adjacent transverse pipe groups are purged by transverse wind, so that all points in all directions of the whole air preheater heat exchange pipe are comprehensively cleaned.
The ash removal comb in the device is driven by a driving device, the air collecting pipe and the carding plate which form the basic framework are of hollow structures, the air collecting pipe which is horizontally arranged is connected with a chain, and the carding plate which is vertically arranged is matched with the heat exchange pipe of the air preheater. In order to ensure the structural strength of the whole device, it is generally preferable to form a stable integral frame by two air collecting pipes and corresponding carding plates, and the maximum length of the whole frame in the moving direction is less than half of the length (cleaning pushing direction) of the heat exchange pipe of the air preheater so as to ensure that all pipe joints are cleaned.
The ash removal comb is connected with an air compressor through an air collecting pipe for supplying air, the transverse cross-section of the comb plate is of a flat elliptic hollow pipe structure, the bottom end of the comb plate is closed, and the upper end of the comb plate is connected with the air collecting pipe to obtain enough internal pressure. The flat elliptic structure is like a wing with small sharp corners at the two ends in the moving direction, so that the resistance is small during reciprocating movement, and the middle protruding part is used as a main contact position between the air preheater heat exchange tube and the air preheater, so that even if polarization is generated, the loss to the air preheater is minimum. The flat elliptic structure also enables the strength of the carding plate to be excellent, the small-circle-sharp-angle direction dimensions at the two ends are high in strength, the force born by the moving direction is met, the thickness dimension is smaller, the requirements of pipe joints between the rows and the columns of the heat exchange pipe of the air preheater are met, but the tiny extrusion between the air preheater and the dust collection is basically not stressed, and the tiny extrusion is ignored even though the air is swept symmetrically. The transverse air spraying openings of the carding plate from top to bottom can be set in position and number according to the pipe seams between the actual adjacent transverse pipe groups, and the application of air pre-heaters of different specifications and models is met. When the ash removal comb moves reciprocally, the longitudinal tube group seam and the transverse tube group seam of the heat exchange tube of the air preheater are cleaned in an omnibearing manner without dead angles through the carding plate, so that the flue gas heat exchange efficiency is improved.
The air preheater is used as a closed system, and other parts except the power mechanism are arranged in the air preheater. The ash removing comb is provided with a driving combined guide mechanism outside the heat exchange tube of the air preheater. The driving combined guide mechanism provides a series of functions of moving power, stable support, closed type dustproof protection and the like of the ash removal comb, and improves the operation stability and the service life of the ash removal comb through reasonable structural distribution.
Compared with the prior art, the invention has the beneficial effects that: the design of the mechanical pressure air combined ash removal comb enables ash collection of all longitudinal and transverse pipe joints of the air preheater to be cleaned in time in all directions without dead angles, the action is stable, the timing operation is performed, the heat exchange pipe is not damaged, the application range is wide, the heat exchange efficiency of the air preheater is improved, and the power consumption is reduced.
Drawings
Fig. 1 is a schematic view of a structure of the present invention.
Fig. 2 is a schematic view of the A-A direction structure of fig. 1.
FIG. 3 is a schematic view of a comb for removing ash according to the invention.
FIG. 4 is a schematic view of a card structure of a comb of the present invention.
FIG. 5 is a schematic cross-sectional view of a comb plate.
Fig. 6 is a schematic diagram of a drive mechanism arrangement of the present invention.
Fig. 7 is a schematic view of a drive combination guide mechanism according to the present invention.
Fig. 8 is a schematic view of the B-B direction structure of fig. 7.
Fig. 9 is an electrical diagram of the operation control of the ash removal comb of the present invention.
In the figure: 1. the dust-proof air preheater comprises an air preheater body, an ash removal comb body, an air collecting pipe, a carding plate, an air spraying port, an air inlet, a driving device, a heat exchange pipe, a chain box, a driving shaft, a driven shaft, a supporting plate, a supporting rail and a dust cover.
Detailed Description
The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings.
In the mechanical and pneumatic hybrid air preheater ash removal device, as shown in fig. 1 and 2, a driving device 3 is arranged outside the air preheater 1, and the driving device 3 drives an ash removal comb 2 matched with a heat exchange tube of the air preheater 1.
The ash removal comb 2 comprises two parallel air collecting pipes 201 which are transversely arranged at the top, a rectangular frame is formed by welding two parallel connecting rods between the two parallel air collecting pipes 201, a group of parallel carding plates 202 are vertically arranged in a penetrating connection with the air collecting pipes 201, as shown in fig. 3, the number of the carding plates 202 is equal to the number of the tube joints of the longitudinal tube groups of the air preheater heat exchange tubes 4, and the length of the carding plates 202 is equal to the matrix height of the air preheater heat exchange tubes 4. The thickness of the carding plate 202 is in clearance fit with the seam between adjacent longitudinal tube groups of the air preheater heat exchange tubes 4.
The carding plate 202 has a hollow structure, as shown in fig. 4 and 5, the cross-sectional surface of which is a flat oval tube structure, and the length of the flat oval is more than 5 times (including 5 times) the width of the flat oval when seen from the cross-section, so as to ensure the strength of the flat oval, two ends of the flat oval in the moving direction of the ash removal comb 2 are small sharp corners, the middle of the flat oval bulges, and the bottom end of the flat oval is a closed end. An air nozzle 203 with the diameter of 6mm is arranged on the carding plate 202 from top to bottom towards the transverse direction (two side positions) of the heat exchange tube of the air preheater. The opening positions of the air outlets 203 are in one-to-one correspondence with the pipe seams between the adjacent transverse pipe groups of the heat exchange pipes 4 of the air preheater. The air jets 203 are arranged in a single hole or multiple holes on the lateral side of the carding plate 202 at the same level.
The two ends of the ash removal comb 2, which are positioned outside the heat exchange tube 4 of the air preheater, are symmetrically provided with driving combination guide mechanisms. Referring to fig. 7 and 8, the driving combination guide mechanism comprises a synchronous chain driven by a chain wheel, an air collecting pipe 201 of the ash removal comb 2 is fixed at the upper chain part of the synchronous chain, a supporting plate 8 is vertically arranged across the lower chain, and a supporting rail 9 is matched with the supporting plate 8. All the components of the drive combined guide mechanism are arranged in a chain box 5, an elastic dust cover 10 is arranged at the upper part of the chain box 5, and the elastic dust cover 10 is provided with a chute along the moving direction of the ash removal comb 2. In the embodiment, the synchronous chain is made to reciprocate in a pulse control mode, so that the connection part of the ash removal comb 2 and the synchronous chain is not influenced by a driving sprocket.
The driving device 3 is formed as shown in fig. 6, and comprises a motor, the motor drives a driving shaft 6 through a transmission chain pair, the driving shaft 6 is positioned at the end part of a chain box 5, driving chain wheels are arranged at the two ends of the driving shaft 6, the driving chain wheels of the driving shaft 6 drive driven chain wheels at the two ends of a driven shaft 7 through a synchronous chain, and the driven shaft 7 and the driven chain wheels at the two ends are also positioned in the chain box 5. The two ends of the air collecting pipe 201 of the ash removal comb 2 are respectively connected with the corresponding synchronous chain upper chains, and the supporting rail 9 is matched with the supporting plate 8 to serve as a supporting guide body.
QYJ series of non-contact pulse controllers are arranged in the control system for the reciprocating motion of the ash removal comb 2, and parameters of the pulse controllers are set: the pulse period is 10min, the pulse width is 2S, the pulse interval is 15S, and the pulse path number is 32, see fig. 9. The pulse interval, the pulse width, the output path number and the period interval of the pulse controller can be specifically adjusted according to practical application conditions, and the output path number can be adjusted according to requirements. The pulse controller adopts an industrial chip as a control core, and the output side is provided with working instructions of all output points, so that the state of the output points can be rapidly judged, and manual operation buttons are arranged, so that the debugging and running operation of the equipment can be conveniently carried out. The waterproof shell structure is adopted, and the waterproof connector is matched, so that the waterproof shell can be used outdoors and in a dust environment. Other control circuits are conventional and are not described in detail herein.
When in use, the air collecting pipe 201 is connected with the air supply pipe of the air compressor by a hose, and the hose can follow when the ash removal comb 2 moves. The air compressor provides 0.5MP of pressure air. When the ash removal comb 2 moves back and forth along the length direction of the air preheater heat exchange tube 4, the carding plate 202 cleans the collected ash between the adjacent longitudinal tube groups of the air preheater heat exchange tube 4, and the cross wind sprayed by the air spraying port 203 sweeps the collected ash between the adjacent transverse tube groups of the air preheater heat exchange tube 4.
In this embodiment, terms such as "length", "transverse", "up" and "down" are used with respect to the specific component structure. The above embodiment is not intended to limit the present invention, for example, for the ash removal comb 2 used in the air preheater with larger volume, more than two parallel air collecting pipes 201 may be provided, each air collecting pipe 201 is respectively provided with a group of carding plates 202, the maximum length of the moving direction formed by more than two air collecting pipes 201 is also less than half of the length of the heat exchange pipe 4 of the air preheater, and any simple transformed method, process, structure, etc. of the present invention are all within the scope of the present invention.
Claims (4)
1. The utility model provides a mechanical pneumatic hybrid air preheater ash handling equipment, includes drive arrangement (3), by the deashing comb (2) of drive arrangement drive, its characterized in that: the ash removal comb comprises a wind collecting pipe (201) which is transversely arranged, a group of carding plates (202) which are arranged in parallel are vertically arranged in connection with the wind collecting pipe, and the thickness of each carding plate is matched with a pipe seam between the adjacent longitudinal pipe groups of the heat exchange pipe (4) of the air preheater; the carding plate is of a hollow structure, and the air collecting pipe is connected with the air supply pipe of the air compressor; the bottom end of the carding plate is a closed end, and the carding plate is transversely provided with an air spraying port (203) from top to bottom towards the heat exchange tube of the air preheater; when the ash removal comb moves back and forth along the length direction of the heat exchange tube of the air preheater, the carding plate cleans the collected ash between the adjacent longitudinal tube groups of the heat exchange tube (4) of the air preheater, and meanwhile, the cross wind sprayed by the air spraying port cleans the collected ash between the adjacent transverse tube groups of the heat exchange tube of the air preheater;
the ash removal comb (2) is provided with two or more than two air collecting pipes (201) which are arranged in parallel, and a group of carding plates (202) are respectively arranged on each air collecting pipe; the maximum length of the moving direction formed by two or more air collecting pipes is less than half of the length of the heat exchange pipe (4) of the air preheater;
the transverse cross-section of the carding plate (202) is of a flat elliptic tube structure; the carding plate (202) is provided with a lateral side air spraying opening (203) which is arranged in a single hole or multiple holes at the same horizontal position;
the ash removal comb (2) is located air preheater heat exchange tube (4) outside both ends are equipped with drive combination guiding mechanism, drive combination guiding mechanism includes the synchronous chain by sprocket drive, and ash removal comb (2) are fixed on the synchronous chain and are equipped with backup pad (8) vertically striden the lower extreme, with backup pad cooperation supporting rail (9).
2. The mechanical and pneumatic hybrid air preheater ash removal device according to claim 1, wherein the driving combination guide mechanism is located in a chain box (5), an elastic dust cover (10) is arranged at the upper part of the chain box, and a chute is arranged on the elastic dust cover along the moving direction of the ash removal comb (2).
3. The mechanical pneumatic hybrid air preheater ash handling system according to claim 1, wherein the driving device (3) comprises a motor which drives a driving shaft (6) through a transmission chain, and the driving shaft drives a driven shaft (7) through a synchronous chain; two ends of a wind collecting pipe (201) of the ash removing comb (2) are respectively connected with the corresponding synchronous chains.
4. The mechanical pneumatic hybrid air preheater ash removal device according to claim 1, wherein the air jet ports (203) on the carding plate (202) correspond to pipe joints between adjacent transverse pipe groups of the air preheater heat exchange pipes (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111577134.6A CN114251970B (en) | 2021-12-22 | 2021-12-22 | Mechanical pneumatic hybrid air preheater ash removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111577134.6A CN114251970B (en) | 2021-12-22 | 2021-12-22 | Mechanical pneumatic hybrid air preheater ash removal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114251970A CN114251970A (en) | 2022-03-29 |
| CN114251970B true CN114251970B (en) | 2024-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111577134.6A Active CN114251970B (en) | 2021-12-22 | 2021-12-22 | Mechanical pneumatic hybrid air preheater ash removal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114251970B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11211390A (en) * | 1998-01-27 | 1999-08-06 | Sakae Sangyo Kk | Dust removing device for heat-exchanger |
| JPH11211389A (en) * | 1998-01-27 | 1999-08-06 | Sakae Sangyo Kk | Dust removing device for tube for heat-exchange |
| JP3140954U (en) * | 2008-01-31 | 2008-04-17 | 陶 建中 | Heat exchanger |
| CN104696937A (en) * | 2015-02-12 | 2015-06-10 | 安徽海螺川崎工程有限公司 | Boiler for recovering heat from exhaust gas |
| CN210346465U (en) * | 2019-08-08 | 2020-04-17 | 厦门热工环保系统工程有限公司 | Ash removal device of flue gas waste heat recoverer |
| WO2021130952A1 (en) * | 2019-12-26 | 2021-07-01 | 三菱電機株式会社 | Heat exchanger, outdoor unit, and refrigeration cycle device |
-
2021
- 2021-12-22 CN CN202111577134.6A patent/CN114251970B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11211390A (en) * | 1998-01-27 | 1999-08-06 | Sakae Sangyo Kk | Dust removing device for heat-exchanger |
| JPH11211389A (en) * | 1998-01-27 | 1999-08-06 | Sakae Sangyo Kk | Dust removing device for tube for heat-exchange |
| JP3140954U (en) * | 2008-01-31 | 2008-04-17 | 陶 建中 | Heat exchanger |
| CN104696937A (en) * | 2015-02-12 | 2015-06-10 | 安徽海螺川崎工程有限公司 | Boiler for recovering heat from exhaust gas |
| CN210346465U (en) * | 2019-08-08 | 2020-04-17 | 厦门热工环保系统工程有限公司 | Ash removal device of flue gas waste heat recoverer |
| WO2021130952A1 (en) * | 2019-12-26 | 2021-07-01 | 三菱電機株式会社 | Heat exchanger, outdoor unit, and refrigeration cycle device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114251970A (en) | 2022-03-29 |
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