阅读说明：本技术 一种两排双管式低温省煤器 (Two-row double-pipe type low-temperature economizer ) 是由 祁运苓 王怀福 曹敬国 鲍教旗 张文静 朱乾 王宇 刘同昌 周勇 张国珍 于 2021-07-26 设计创作，主要内容包括：本发明公开了一种两排双管式低温省煤器,涉及省煤器领域,本发明包括壳体；本发明在使用时,首先将会由导流叶片对进入换热管内的烟气进行导流,使得烟气流通更有规律,烟气经过换热管后,由滤灰板对烟气中的灰尘进行过滤,并且烟气还会带动清灰叶片的转动,由于滤灰板为异形设置和清灰叶片的转动,并且清灰叶片与滤灰板相贴合,造成滤灰板产生一定程度的振动,使得滤灰板上的灰尘进入清灰叶片所在位置,并且由于清灰叶片在转动时呈圆台型,使得灰尘将会在清灰叶片的转动向壳体的内侧壁上移动,使得灰尘经过排灰口排出,实现了对水平烟道积灰的有效清理,防止了低温段烟道出口管子出现腐蚀的情况,延长了省煤器的使用寿命,减轻了人员的负担。(The invention discloses a two-row double-pipe low-temperature economizer, which relates to the field of economizers and comprises a shell; when the invention is used, the guide vanes firstly guide the flue gas entering the heat exchange tube, the smoke circulation is more regular, the dust in the smoke is filtered by the dust filter plate after the smoke passes through the heat exchange pipe, and the smoke can drive the ash removal blades to rotate, because the ash filtering plate is arranged in a special shape and rotates with the ash removing blades, and the ash removing blades are jointed with the ash filtering plate, the ash filtering plate generates certain vibration, so that the dust on the ash filtering plate enters the position of the ash removing blades, and because the ash removing blade is in a round table shape when rotating, the dust can move to the inner side wall of the shell body when the ash removing blade rotates, the dust is discharged through the dust discharge port, the dust accumulated in the horizontal flue is effectively cleaned, the corrosion of the low-temperature section flue outlet pipe is prevented, the service life of the economizer is prolonged, and the burden of personnel is reduced.)

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 cleaning mechanism (9), the ash cleaning mechanism (9) is arranged on the inner side wall of the shell (1), 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 in sliding connection with the inner side wall of the shell (1);

the reciprocating mechanism (10), the reciprocating mechanism (10) is used for connecting the ash removal mechanism (9) and the compression mechanism (11), and the reciprocating mechanism (10) is arranged inside the side wall of the shell (1).

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-pipe low-temperature economizer according to claim 1, wherein the ash removal mechanism (9) comprises ash removal blades (91), a rotating rod (92), a rotating disc (93), an ash removal port (94) and an ash filtering plate (95); the tip of deashing blade (91) with the lateral wall fixed connection of bull stick (92), bull stick (92) to the tip with the lateral wall of casing (1) is connected through the bearing, the lateral wall of carousel (93) with the tip fixed connection of bull stick (92), arrange ash mouth (94) and set up the lateral wall of casing (1), arrange ash mouth (94) and set up the bottom position at deashing blade (91), strain the inside wall of hawk (95) with the outside wall of deashing blade (91) is laminated mutually, strain the both ends of hawk (95) with the inside wall fixed connection of casing (1).

4. The two-bank two-pipe low-temperature economizer according to claim 1, characterized in that the reciprocating mechanism (10) comprises a connecting rod (101) and a reciprocating rod (102); the outer side wall of the connecting rod (101) is in sliding connection with the inner side wall of the reciprocating rod (102), the end portion of the connecting rod (101) is in sliding connection with the inner side wall of the shell (1), and the outer side wall of the reciprocating rod (102) is in sliding connection with the inner side wall of the shell (1).

5. The two-row double-pipe low-temperature economizer according to claim 1, wherein the compression mechanism (11) comprises a fixing rod (111), a pressing box (112), an exhaust hole (113), a sealing plate (114) and a drain 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).

6. The two-row double-pipe low-temperature economizer according to claim 1, wherein an upper guide plate (4) is 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 pipe (5), a lower guide plate (8) is 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).

7. The two-row double-pipe low-temperature economizer according to claim 6, 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).

8. The two-row double-pipe type low-temperature economizer according to any one of claims 3, 4 or 5, wherein the side wall of the rotary disc (93) is connected with the end part 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).

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 economizer and is generally made of carbon steel pipes with the outer diameter of 32-51 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. Because the feed water is heated in the economizer before entering the steam pocket, 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 manufacturing 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 cleaning mechanism is arranged on the inner side wall of the shell and is used for treating dust generated by smoke and providing driving force;

the compression mechanism compresses the cooled flue gas to generate water, and is in sliding connection with the inner side wall of the shell;

the reciprocating mechanism is used for connecting the ash cleaning mechanism and the compression mechanism, and is arranged inside the side wall of the shell.

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 ash removing mechanism comprises an ash removing blade, a rotating rod, a rotating disc, an ash discharging port and an ash filtering plate; the tip of deashing blade with the lateral wall fixed connection of bull stick, the bull stick to the tip with the lateral wall of casing is connected through the bearing, the lateral wall of carousel with the tip fixed connection of bull stick, the ash discharge opening is seted up the lateral wall of casing, the bottom position at the deashing blade is seted up to the ash discharge opening, strain the inside wall of grey board with the laminating of the lateral wall of deashing blade, strain the both ends of grey board with the inside wall fixed connection of casing.

Preferably, the reciprocating mechanism 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, and the outer side wall of the reciprocating rod is connected with the inner side wall of the shell in a sliding mode.

Preferably, the compression mechanism comprises a fixing rod, a squeezing 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.

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.

Preferably, the side wall of the turntable is connected with the end part 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.

Compared with the prior art, the invention has the beneficial effects that:

1. when the invention is used, when flue gas enters, the flue gas entering the heat exchange pipe is firstly guided by the guide vanes to ensure that the circulation of the flue gas is more regular, after the flue gas completely exchanges heat through the heat exchange pipe, dust in the flue gas is filtered by the dust filter plate, and the flue gas can also drive the rotation of the ash removal vanes, because the dust filter plate is in special-shaped arrangement and the ash removal vanes rotate, and the ash removal vanes are attached to the dust filter plate, the dust filter plate can generate a certain vibration effect to ensure that the dust on the dust filter plate enters the positions of the ash removal vanes, and because the ash removal vanes are in a circular truncated cone shape when rotating, the dust can move towards the inner side wall of the shell when the ash removal vanes rotate, because the ash discharge port and the ash removal vanes rotate, the dust can be discharged through the ash discharge port, the effective cleaning of accumulated dust in a horizontal flue is realized, and the corrosion condition of an outlet pipe of a flue at a low temperature section is prevented, the service life of the economizer is prolonged, and the burden of personnel is lightened.

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 view of the middle part 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 schematic structural diagram of a two-row double-pipe low-temperature economizer according to the present 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-bank double-pipe type 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 the resource is saved, and the utilization rate of the resource 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.

The side wall of the turntable 93 is connected with the end 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.

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, flue gas can enter through the top of the shell 1, the flue gas can exchange heat through the heat exchange pipe 5 and the fins 6, the flue gas can push the guide vanes 72 to rotate, the flue gas can regularly and uniformly flow, and the flue gas can be uniformly blown to the ash removal vanes 91 after the 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 removal blade 91 drives the rotation of the rotating rod 92, and then drives the rotation of the rotating disk 93, the rotation of the rotating disk 93 will drive the connecting rod 101 to rotate, and then drive the reciprocating rod 102 to move up and down, the reciprocating rod 102 will move up and down, 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 right opposite to the through hole 14, so that the gas is exhausted, 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 generated water will be completely exhausted, the operation is simple and fast, the energy-saving performance is high, and the use of convenience is facilitated for personnel and the popularization.

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 to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.