CN113623635B - Two-row double-pipe type low-temperature economizer - Google Patents
Two-row double-pipe type low-temperature economizer Download PDFInfo
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- CN113623635B CN113623635B CN202110846446.6A CN202110846446A CN113623635B CN 113623635 B CN113623635 B CN 113623635B CN 202110846446 A CN202110846446 A CN 202110846446A CN 113623635 B CN113623635 B CN 113623635B
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- side wall
- shell
- fixedly connected
- ash
- rod
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/02—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
- F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
- F23J3/026—Cleaning furnace tubes; Cleaning flues or chimneys cleaning the chimneys
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F11/00—Arrangements for sealing leaky tubes and conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/01—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using means for separating solid materials from heat-exchange fluids, e.g. filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
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- 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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
The invention discloses a two-row double-pipe low-temperature economizer, which relates to the field of economizers and comprises a shell; when the dust removal device is used, firstly, the guide vanes guide the flow of flue gas entering the heat exchange pipe, so that the flow of the flue gas is more regular, after the flue gas passes through the heat exchange pipe, dust in the flue gas is filtered by the dust filter plate, and the flue gas can drive the dust removal vanes to rotate.
Description
Technical Field
The invention relates to the technical field of coal economizers, in particular to a two-row double-pipe low-temperature coal economizer.
Background
The economizer is a device which is arranged at the lower part of a flue at the tail part of a boiler and used for recovering the waste heat of exhausted smoke, heats the water fed by the boiler into a heating surface of saturated water under the pressure of a steam drum, and is called as the economizer because the economizer absorbs the heat of high-temperature smoke, reduces the exhaust temperature of the smoke, saves energy and improves the efficiency. The steel pipe type economizer is not limited by pressure, can be used as a boiling type, and is generally made of a carbon steel pipe having an outer diameter of 32 to 51 mm. Fins and fins are sometimes added to the tube to improve heat transfer. The steel pipe type economizer consists of parallel elbow pipes (commonly called coiled pipes) which are horizontally arranged. The main functions are as follows: absorb the heat of low temperature flue gas, reduce exhaust gas temperature, reduce the loss of discharging fume, save fuel. The economizer heats the feed water before entering the steam drum, so that the heat absorption of the feed water on the heating surface is reduced, and the economizer can be used for replacing part of the evaporation heating surface with higher cost. The temperature of the supplied water is increased, the temperature difference of the wall is reduced when the supplied water enters the steam drum, the thermal stress is correspondingly reduced, and the service life of the steam drum is prolonged.
When the existing economizer is used, dust generated by the economizer cannot be effectively cleaned, water in low-temperature smoke cannot be effectively utilized, resource waste is caused to a certain extent, and certain trouble is brought to cleaning of the economizer for personnel.
Disclosure of Invention
The invention aims to solve the problems that dust generated by an economizer cannot be effectively cleaned and moisture in low-temperature flue gas cannot be effectively utilized in the prior art, and provides a two-row double-pipe type low-temperature economizer.
In order to achieve the purpose, the invention adopts the following technical scheme:
a two-bank, two-pipe, low-temperature economizer comprising:
the water inlet pipe is mounted on the side wall of the shell, the water outlet pipe is mounted on the side wall of the shell, the water inlet pipe is connected with the water outlet pipe through a heat exchange pipe, and a flow guide device is mounted inside the side wall of the shell;
the ash removal mechanism is arranged on the inner side wall of the shell, is used for treating dust generated by smoke and providing driving force, and comprises ash removal blades, a rotating rod, a rotating disc, an ash discharge port and an ash filtering plate; the end part of the ash removal blade is fixedly connected with the outer side wall of the rotating rod, the opposite end part of the rotating rod is connected with the side wall of the shell through a bearing, the side wall of the rotating disc is fixedly connected with the end part of the rotating rod, the ash discharge port is formed in the side wall of the shell, the ash discharge port is formed in the bottom position of the ash removal blade, the inner side wall of the ash filtering plate is attached to the outer side wall of the ash removal blade, and the two ends of the ash filtering plate are fixedly connected with the inner side wall of the shell;
the compression mechanism compresses the cooled flue gas to generate water, is connected with the inner side wall of the shell in a sliding manner and comprises a fixed rod, an extrusion box, an exhaust hole, a sealing plate and a water outlet; the end part of the fixed rod is fixedly connected with the inner side wall of the extrusion box, the exhaust hole is formed in the side wall of the extrusion box, the top of the sealing plate is attached to the bottom of the extrusion box, the end part of the water outlet is attached to the side wall of the sealing plate, and the water outlet is formed in the side wall of the shell;
the reciprocating mechanism is used for connecting the ash cleaning mechanism and the compression mechanism, is arranged inside the side wall of the shell and comprises a connecting rod and a reciprocating rod; the outer side wall of the connecting rod is connected with the inner side wall of the reciprocating rod in a sliding mode, the end portion of the connecting rod is connected with the inner side wall of the shell in a sliding mode, the outer side wall of the reciprocating rod is connected with the inner side wall of the shell in a sliding mode, the side wall of the rotary table is connected with the end portion of the connecting rod through a bearing, and the bottom of the reciprocating rod is fixedly connected with the outer side wall of the fixing rod.
Preferably, the flow guiding device comprises a rotating shaft and a flow guiding blade; the end part of the rotating shaft is connected with the inner side wall of the shell through a bearing, and the end part of the guide vane is fixedly connected with the outer side wall of the rotating shaft.
Preferably, the inside wall fixedly connected with upper guide plate of casing, the lateral wall fixedly connected with fin of heat exchange tube, the inside wall fixedly connected with lower floor's guide plate of casing, the one-way filter plate of inside wall fixedly connected with of casing, the bottom fixedly connected with control box of one-way filter plate, the control box with the inside wall fixed connection of casing, the through-hole has been seted up to the lateral wall of control box.
Preferably, the rotating shaft is connected with the fins through bearings, the one-way filter plate is arranged right opposite to the bottom of the ash removal mechanism, the top of the ash filter plate is fixedly connected with the bottom of the lower guide plate, and the outer side wall of the extrusion box is slidably connected with the inner side wall of the operation box.
Compared with the prior art, the invention has the beneficial effects that:
1. when the dust removal device is used, when smoke enters, the smoke entering the heat exchange pipe is guided by the guide vanes to enable the smoke to circulate more regularly, after the smoke completely exchanges heat through the heat exchange pipe, dust in the smoke is filtered by the dust filter plate, the smoke can drive the dust removal vanes to rotate, the dust filter plate is in special-shaped arrangement and rotates along with the dust removal vanes, the dust removal vanes are attached to the dust filter plate, a certain vibration effect is generated on the dust filter plate, the dust on the dust filter plate enters the positions of the dust removal vanes, the dust is enabled to move towards the inner side wall of the shell through the rotation of the dust removal vanes due to the rotation of the dust discharge port and the dust removal vanes, the dust is discharged through the dust discharge port, the effective cleaning of accumulated dust in a horizontal flue is realized, the corrosion of a low-temperature section flue outlet pipe is prevented, the service life of the coal economizer is prolonged, and the burden of personnel is reduced.
2. The rotary rod is driven to rotate by the rotation of the ash removal blade, so that the rotary disk is driven to rotate, the connecting rod is driven to rotate by the rotation of the rotary disk, the reciprocating rod is driven to move up and down, the extrusion box is driven to move up and down by the fixed rod, when the extrusion box moves upwards, gas entering the operation box through the one-way filter plate is compressed, when the extrusion box moves upwards to the highest position, the exhaust hole is aligned to the through hole, so that the gas is exhausted, when the extrusion box moves downwards, the sealing plate is pushed to move downwards, so that the water outlet is opened, and when the extrusion box reaches the bottommost part of the operation direction, the generated water is completely exhausted, so that the energy is effectively saved, and good economic benefit is brought.
Drawings
Fig. 1 is a schematic front perspective view of a two-row double-pipe low-temperature economizer according to the present invention;
FIG. 2 is a schematic cross-sectional view of the middle part of the front surface of a two-row double-pipe low-temperature economizer according to the present invention;
FIG. 3 is a schematic cross-sectional view of the middle portion of the front side wall of a two-row double-pipe low-temperature economizer according to the present invention;
FIG. 4 is a schematic cross-sectional structural view of the middle portion of the side surface of a two-row double-pipe low-temperature economizer according to the present invention;
FIG. 5 is an enlarged schematic structural diagram of the position A in FIG. 3 of a two-row double-pipe low-temperature economizer according to the present invention;
FIG. 6 is an enlarged schematic structural diagram at B in FIG. 4 of a two-row double-pipe low-temperature economizer according to the present invention;
fig. 7 is an enlarged structural schematic diagram of a two-row double-pipe low-temperature economizer provided by the invention at a position C in fig. 3.
In the figure: 1 shell, 2 water inlet pipes, 3 water outlet pipes, 4 upper-layer guide plates, 5 heat exchange pipes, 6 fins, 7 guide devices, 71 rotating shafts, 72 guide vanes, 8 lower-layer guide plates, 9 ash cleaning mechanisms, 91 ash cleaning vanes, 92 rotating rods, 93 rotating disks, 94 ash discharging ports, 95 ash filtering plates, 10 reciprocating mechanisms, 101 connecting rods, 102 reciprocating rods, 11 compression mechanisms, 111 fixing rods, 112 extrusion boxes, 113 exhaust holes, 114 sealing plates, 115 water discharging ports, 12 one-way filter plates, 13 operation boxes and 14 through holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1 to 7, a two-row double-pipe low-temperature economizer includes:
the water-saving device comprises a shell 1, wherein a water inlet pipe 2 is installed on the side wall of the shell 1, a water outlet pipe 3 is installed on the side wall of the shell 1, the water inlet pipe 2 is connected with the water outlet pipe 3 through a heat exchange pipe 5, and a flow guide device 7 is installed inside the side wall of the shell 1;
the ash cleaning mechanism 9 is arranged on the inner side wall of the shell 1, and the ash cleaning mechanism 9 is used for treating dust generated by flue gas and providing driving force;
the compression mechanism 11 compresses the cooled flue gas to generate water, and the compression mechanism 11 is connected with the inner side wall of the shell 1 in a sliding manner;
the reciprocating mechanism 10 is used for connecting the ash cleaning mechanism 9 and the compression mechanism 11, and the reciprocating mechanism 10 is arranged inside the side wall of the shell 1;
through the arrangement of the structure, the flue gas circulation is more uniform, the corrosion of the low-temperature section flue outlet pipe is prevented, the service life of the economizer is prolonged, the burden of personnel is reduced, and the resources are saved.
The guide device 7 comprises a rotating shaft 71 and guide vanes 72; the end part of the rotating shaft 71 is connected with the inner side wall of the shell 1 through a bearing, and the end part of the guide vane 72 is fixedly connected with the outer side wall of the rotating shaft 71;
through the arrangement of the structure, the flow guide of the flue gas is realized, so that the heat exchange tube 5 can exchange heat to the flue gas better and more regularly, and the heat exchange efficiency is improved.
Wherein, the ash removing mechanism 9 comprises an ash removing blade 91, a rotating rod 92, a rotating disc 93, an ash discharging port 94 and an ash filtering plate 95; the end part of the ash removal blade 91 is fixedly connected with the outer side wall of the rotating rod 92, the opposite end part of the rotating rod 92 is connected with the side wall of the shell 1 through a bearing, the side wall of the rotary disc 93 is fixedly connected with the end part of the rotating rod 92, the ash discharge port 94 is formed in the side wall of the shell 1, the ash discharge port 94 is formed in the bottom position of the ash removal blade 91, the ash removal blade 91 is in a circular table shape when rotating, the ash filter plate 95 is in a special shape, the inner side wall of the ash filter plate 95 is attached to the outer side wall of the ash removal blade 91, and two ends of the ash filter plate 95 are fixedly connected with the inner side wall of the shell 1;
through the arrangement of the structure, the effective filtering treatment of dust in the flue gas is realized, the dust in the flue gas is prevented from being accumulated in the economizer, the corrosion to the flue outlet pipe at the low-temperature section of the economizer is avoided, the service life of the pipeline is prolonged, the resource is saved, and the burden of personnel is reduced.
Wherein, the reciprocating mechanism 10 comprises a connecting rod 101 and a reciprocating rod 102; the outer side wall of the connecting rod 101 is connected with the inner side wall of the reciprocating rod 102 in a sliding mode, the end portion of the connecting rod 101 is connected with the inner portion of the side wall of the shell 1 in a sliding mode, and the outer side wall of the reciprocating rod 102 is connected with the inner portion of the side wall of the shell 1 in a sliding mode;
through the arrangement of the structure, the ash cleaning mechanism 9 can drive the compression mechanism 11 to work in a circulating reciprocating manner, and the stable work of the compression mechanism 11 is ensured.
Wherein, the compressing mechanism 11 comprises a fixing rod 111, a squeezing box 112, an air outlet 113, a sealing plate 114 and a water outlet 115; the end of the fixing rod 111 is fixedly connected with the inner side wall of the extrusion box 112, the exhaust hole 113 is formed in the side wall of the extrusion box 112, the top of the sealing plate 114 is attached to the bottom of the extrusion box 112, the end of the water outlet 115 is attached to the side wall of the sealing plate 114, and the water outlet 115 is formed in the side wall of the shell 1;
through the arrangement of the structure, the moisture in the cooled flue gas is effectively treated and collected, so that resources are saved, and the utilization rate of the resources is improved.
Wherein, the inside wall fixedly connected with upper guide plate 4 of casing 1, the lateral wall fixedly connected with fin 6 of heat exchange tube 5, the inside wall fixedly connected with lower floor guide plate 8 of casing 1, the one-way filter plate 12 of inside wall fixedly connected with of casing 1, the bottom fixedly connected with control box 13 of one-way filter plate 12, control box 13 and the inside wall fixed connection of casing 1, through-hole 14 has been seted up to the lateral wall of control box 13.
The rotating shaft 71 is connected with the fins 6 through bearings, the one-way filter plate 12 is arranged right opposite to the bottom of the ash removal mechanism 9, the top of the ash filter plate 95 is fixedly connected with the bottom of the lower guide plate 8, and the outer side wall of the extrusion box 112 is slidably connected with the inner side wall of the operation box 13.
Wherein, the lateral wall of carousel 93 is connected through the bearing with the tip of connecting rod 101, and the bottom of reciprocating lever 102 and the lateral wall fixed connection of dead lever 111.
When the device is used, firstly, water is added through the water inlet pipe 2, so that cooling water is fully filled in the heat exchange pipe 5 and then is discharged through the water outlet pipe 3, then smoke can enter the device through the top of the shell 1, the smoke can exchange heat through the heat exchange pipe 5 and the fins 6, and the smoke can push the guide vanes 72 to rotate, so that the smoke regularly and uniformly flows, and the smoke can be uniformly blown to the dust removing vanes 91 after heat exchange is finished;
the flue gas after heat exchange is filtered by the ash filtering plate 95, and due to the rotation of the ash cleaning blade 91 and the attachment of the ash cleaning blade 91 and the ash filtering plate 95, the rotation of the ash cleaning blade 91 causes the ash filtering plate 95 to generate certain vibration, so that the dust on the ash filtering plate 95 enters the position of the ash cleaning blade 91, and the dust is discharged through the ash discharge port 94 under the rotation of the ash cleaning blade 91;
the rotation of the ash cleaning blade 91 drives the rotation of the rotating rod 92 and further drives the rotation of the rotating disk 93, the rotation of the rotating disk 93 will drive the connecting rod 101 to rotate and further drive the reciprocating rod 102 to move up and down, the reciprocating rod 102 will move up and down and the extrusion box 112 will be driven to move up and down through the fixing rod 111, when the extrusion box 112 moves up, the gas entering the operation box 13 through the one-way filter plate 12 will be compressed, when the extrusion box 112 moves up to the highest position, the exhaust hole 113 will be opposite to the through hole 14 for gas exhaust, when the extrusion box 112 moves down, the sealing plate 114 will be pushed to move down, so that the water outlet 115 is opened, when the extrusion box 112 reaches the bottommost part of the operation direction, the produced water will be completely discharged, the operation is simple and fast, the energy-saving performance is high, and the use of a person is convenient and the popularization is achieved.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (4)
1. A two-row double-pipe low-temperature economizer is characterized by comprising:
the water inlet pipe comprises a shell (1), wherein a water inlet pipe (2) is installed on the side wall of the shell (1), a water outlet pipe (3) is installed on the side wall of the shell (1), the water inlet pipe (2) is connected with the water outlet pipe (3) through a heat exchange pipe (5), and a flow guide device (7) is installed inside the side wall of the shell (1);
the ash removal mechanism (9), the ash removal mechanism (9) is arranged on the inner side wall of the shell (1), the ash removal mechanism (9) is used for treating dust generated by flue gas and providing driving force, and the ash removal mechanism (9) comprises ash removal blades (91), a rotating rod (92), a rotating disc (93), an ash discharge port (94) and an ash filtering plate (95); the end part of the ash removal blade (91) is fixedly connected with the outer side wall of the rotating rod (92), the opposite end part of the rotating rod (92) is connected with the side wall of the shell (1) through a bearing, the side wall of the rotating disc (93) is fixedly connected with the end part of the rotating rod (92), the ash discharge port (94) is formed in the side wall of the shell (1), the ash discharge port (94) is formed in the bottom position of the ash removal blade (91), the inner side wall of the ash filtering plate (95) is attached to the outer side wall of the ash removal blade (91), and two ends of the ash filtering plate (95) are fixedly connected with the inner side wall of the shell (1);
the compression mechanism (11) compresses the cooled flue gas to generate water, the compression mechanism (11) is connected with the inner side wall of the shell (1) in a sliding manner, and the compression mechanism (11) comprises a fixing rod (111), a squeezing box (112), an exhaust hole (113), a sealing plate (114) and a water outlet (115); the end part of the fixing rod (111) is fixedly connected with the inner side wall of the extrusion box (112), the exhaust hole (113) is formed in the side wall of the extrusion box (112), the top of the sealing plate (114) is attached to the bottom of the extrusion box (112), the end part of the water outlet (115) is attached to the side wall of the sealing plate (114), and the water outlet (115) is formed in the side wall of the shell (1);
the reciprocating mechanism (10) is used for connecting the ash cleaning mechanism (9) and the compression mechanism (11), the reciprocating mechanism (10) is arranged inside the side wall of the shell (1), and the reciprocating mechanism (10) comprises a connecting rod (101) and a reciprocating rod (102); the outer side wall of the connecting rod (101) is connected with the inner side wall of the reciprocating rod (102) in a sliding mode, the end portion of the connecting rod (101) is connected with the inner side wall of the shell (1) in a sliding mode, the outer side wall of the reciprocating rod (102) is connected with the inner side wall of the shell (1) in a sliding mode, the side wall of the turntable (93) is connected with the end portion of the connecting rod (101) through a bearing, and the bottom of the reciprocating rod (102) is fixedly connected with the outer side wall of the fixing rod (111).
2. The two-bank two-pipe low-temperature economizer according to claim 1, characterized in that the flow guiding device (7) comprises a rotating shaft (71) and a flow guiding vane (72); the end part of the rotating shaft (71) is connected with the inner side wall of the shell (1) through a bearing, and the end part of the guide vane (72) is fixedly connected with the outer side wall of the rotating shaft (71).
3. The two-row double-tube type low-temperature economizer according to claim 2 is characterized in that an upper layer of guide plates (4) are fixedly connected to the inner side wall of the shell (1), fins (6) are fixedly connected to the outer side wall of the heat exchange tube (5), a lower layer of guide plates (8) are fixedly connected to the inner side wall of the shell (1), a one-way filter plate (12) is fixedly connected to the inner side wall of the shell (1), an operation box (13) is fixedly connected to the bottom of the one-way filter plate (12), the operation box (13) is fixedly connected to the inner side wall of the shell (1), and a through hole (14) is formed in the outer side wall of the operation box (13).
4. The two-row double-pipe low-temperature economizer according to claim 3, wherein the rotating shaft (71) is connected with the fins (6) through bearings, the one-way filter plate (12) is arranged right opposite to the bottom of the ash removal mechanism (9), the top of the ash filter plate (95) is fixedly connected with the bottom of the lower guide plate (8), and the outer side wall of the extrusion box (112) is slidably connected with the inner side wall of the operation box (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110846446.6A CN113623635B (en) | 2021-07-26 | 2021-07-26 | Two-row double-pipe type low-temperature economizer |
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| CN202110846446.6A CN113623635B (en) | 2021-07-26 | 2021-07-26 | Two-row double-pipe type low-temperature economizer |
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| CN113623635B true CN113623635B (en) | 2023-04-07 |
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| CN114738728A (en) * | 2022-03-24 | 2022-07-12 | 华能国际电力股份有限公司营口电厂 | Thermal power station boiler flue gas heat transfer system |
| CN114738730A (en) * | 2022-03-24 | 2022-07-12 | 华能国际电力股份有限公司营口电厂 | High-efficient low temperature economizer of boiler |
| CN116146970B (en) * | 2023-04-24 | 2023-07-25 | 厦门铭光能源科技有限公司 | Welded plate-type coal economizer |
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| CN213589970U (en) * | 2020-06-24 | 2021-07-02 | 刘华萍 | Dust removal mechanism for denitration of straw combustion flue gas |
| CN111773905B (en) * | 2020-07-20 | 2022-07-19 | 山东瀚江环保科技有限公司 | Flue gas desulfurization system and flue gas desulfurization method |
| CN212841520U (en) * | 2020-08-14 | 2021-03-30 | 江苏衡鼎新能源科技有限公司 | Corrosion-resistant low-temperature economizer |
| CN112946198A (en) * | 2021-02-04 | 2021-06-11 | 江苏建筑职业技术学院 | System and device for monitoring sensing of people in building |
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