CN216557109U

CN216557109U - Cyclone separator capable of efficiently exchanging heat and adjusting temperature

Info

Publication number: CN216557109U
Application number: CN202122931138.1U
Authority: CN
Inventors: 刘上中; 刘骥翔; 王建新; 刘同华; 魏方琦; 井庆军; 王鹏; 李治平; 胡光伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-05-17
Anticipated expiration: 2031-11-26

Abstract

The utility model discloses a cyclone separator capable of efficiently exchanging heat and adjusting temperature, which comprises a water wall pipe, wherein the water wall pipe is the side wall of the cyclone separator, and a first grid plate and a second grid plate which are fixedly arranged on the water wall pipe, the first grid plate comprises a first welding groove, a first flow stabilizing groove and a first heat conducting hole, the first welding groove is in contact with the water wall pipe and is used for improving welding strength, the first flow stabilizing groove and the first heat conducting hole are arc-shaped notches, the first flow stabilizing groove is arranged on one side of the first grid plate, which is far away from the water wall pipe, the first heat conducting hole is arranged on the other side, the temperature adjusting function is realized by adjusting the welding angle of an abrasion-proof structure and the flow of a steam-water mixture in the water wall, the outer wall of the traditional cyclone separator is replaced into a water wall structure, and the problem that the temperature of reburning is over-high due to overhigh temperature in the cyclone separator is solved, The water wall pipe is easy to be worn and the heat exchange efficiency is low.

Description

Cyclone separator capable of efficiently exchanging heat and adjusting temperature

Technical Field

The utility model relates to the technical field of cyclone separators, in particular to a cyclone separator capable of efficiently exchanging heat and adjusting temperature.

Background

The cyclone separator is used as a part of material circulation of the circulating fluidized bed boiler, can separate a large amount of materials carried by the smoke gas, and enables the materials to be sent back into the boiler through the vertical pipe and the material returning device to participate in combustion and material circulation, if the temperature of the smoke gas in the cyclone separator is overhigh, the gas viscosity can be increased, the dragging force acting on particles is increased, the separation efficiency of the separator is reduced, the integral circulation multiplying power of the boiler is reduced, and the boiler efficiency is reduced, and the solid particles can not be completely separated, the problems of blockage, coking and the like are easily caused when the cyclone separator runs for a long time, if the problems can be effectively solved, the running stability of the cyclone separator is improved, and the heat exchange capability of the cyclone separator is enhanced, the boiler unit can be improved in overall efficiency, the economic efficiency of the boiler unit is greatly improved, and the conventional cyclone separator mainly comprises an adiabatic separator, an air-cooled separator and a water-cooled separator.

The prior art has the following disadvantages: (1) materials in the flue gas abrade the inner wall in the circulation process to cause pipe explosion; (2) in order to reduce the abrasion of the cyclone separator, a great amount of refractory castable is used on the inner wall surface of the cyclone separator, and because the refractory castable has poor heat conductivity, the heat absorption and heat exchange capability of a covered area is seriously reduced, so that the temperature of flue gas in the cyclone separator is easily increased; (3) due to the fact that thermal inertia is large, the outer wall is over-heated, or due to the fact that the temperature of the flue gas is too high, part of combustible materials are combusted in the separator, the heat transfer quantity of the flue gas to the tail convection heating surface is increased, and the reheater is over-heated, namely the post-combustion phenomenon of the circulating fluidized bed is caused.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects or the improvement requirements of the prior art, the utility model provides a cyclone separator capable of efficiently exchanging heat and adjusting temperature, which comprises a water wall pipe, a first grid plate and a second grid plate, wherein the water wall pipe is the side wall of the cyclone separator, the first grid plate and the second grid plate are fixedly arranged on the water wall pipe, the first grid plate comprises a first welding groove, a first flow stabilizing groove and a first heat conducting hole, the first welding groove is in contact with the water wall pipe and is used for improving the welding strength, the first flow stabilizing groove and the first heat conducting hole are arc-shaped notches, the first flow stabilizing groove is arranged on one side, away from the water wall pipe, of the first grid plate, the first heat conducting hole is arranged on the other side, the temperature adjusting function is realized by adjusting the welding angle of an abrasion-proof structure and the flow of a steam-water mixture in the water wall, the outer wall of the traditional cyclone separator is replaced into the water wall structure, and the problems that the smoke temperature in the cyclone separator is too high to cause reburning and over-temperature are solved, The water wall pipe is easy to be worn and the heat exchange efficiency is low.

In order to achieve the above object, the present invention provides a cyclone separator capable of high-efficiency heat exchange and temperature regulation, which comprises a vertical part and an inclined part, and further comprises:

the water wall pipe to and fixed locating first grid board and second grid board on the water wall pipe, vertical part with the slope part by the preparation of water wall pipe, first grid board includes first welding groove, first steady flow groove and first heat conduction hole, first welding groove with water wall pipe contact for improve welding strength, first steady flow groove with first heat conduction hole is the arc breach, first steady flow groove is located first grid board deviates from one side of water wall pipe, the opposite side is located to first heat conduction hole.

Furthermore, the water wall tubes comprise water cooling tubes and fins, the water cooling tubes are arranged in parallel, and two sides of each fin are respectively fixed on two adjacent water cooling tubes.

Further, the first grid plate is horizontally fixed in the vertical portion, and the second grid plate is vertically fixed in the vertical portion.

Further, in the inclined portion, the first grid plate is fixedly arranged by inclining obliquely downward by an angle of between degrees.

Further, the slope part, the second grid board be for adopting the rhombus structure, the second grid board includes second steady flow groove, second welding groove and second heat conduction hole, the second steady flow groove with the second heat conduction hole is the arc breach, the second steady flow groove is located the second grid board deviates from one side of water wall pipe, the opposite side is located to the second heat conduction hole.

In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:

1. the utility model provides a cyclone separator with high-efficiency heat exchange and temperature regulation, which comprises a water wall tube used for manufacturing the side wall of the inner wall of the separator, the two grating plates are respectively fixed on the water wall tube in a horizontal and vertical state in a welding way, play a role in preventing boring particles from affecting the separator and the water wall tube, and can form a new high-efficiency heating surface with the water wall tube, improve the heat exchange capacity of the cyclone separator, effectively reduce the smoke temperature and increase the heat exchange capacity of the boiler, first grid board includes first welding groove, first steady flow groove and first heat conduction hole, and first welding groove makes first grid board welding position more firm, and first steady flow groove and first heat conduction hole play the effect of stabilizing the flue gas flow and improving heat conduction efficiency respectively, have solved among the cyclone that flue gas temperature is too high and have leaded to the overfire super temperature, the easy problem that is worn and torn and heat exchange efficiency is low of water wall pipe.

2. The utility model provides a cyclone separator capable of efficiently exchanging heat and adjusting temperature, which comprises a water wall pipe, a first grid plate and a second grid plate, wherein the water wall pipe is fixed along the inner wall of an inner cyclone separator, the first grid plate and the second grid plate are respectively welded and fixed on the water wall pipe by adopting horizontal postures and vertical postures in the vertical part of the inner wall of the cyclone separator, the first grid plate can be adjusted to be welded in the same inclined downward posture on the inclined inner wall at the bottom of the separator, the second grid plate can adopt different edge shapes, and the postures of the two grid plates can be adjusted to play roles in adjusting the blocking effect of the flow velocity of flue gas and the heat exchange efficiency.

3. The utility model provides a cyclone separator capable of efficiently exchanging heat and adjusting temperature, wherein a water wall tube comprises water-cooling tubes and fins, the water-cooling tubes are arranged in parallel, the fins are fixed between two adjacent water-cooling tubes, the fins play a role in fixing and simultaneously increase the heat exchange area of the water-cooling tubes, meanwhile, water flow is externally connected into the water-cooling tubes, and the flue gas temperature in the cyclone separator can be controlled by adjusting the flow velocity of the water flow.

Drawings

FIG. 1 is a sectional front view of a high efficiency heat exchange temperature adjustable cyclone separator in accordance with an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a water wall tube of a cyclone separator with high heat exchange efficiency and temperature regulation according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a first grid plate welding of a cyclone separator with high heat exchange efficiency and temperature regulation according to an embodiment of the utility model;

FIG. 4 is a schematic view of the welding of the second grid plate of the cyclone separator with high heat exchange efficiency and temperature regulation according to the embodiment of the utility model

FIG. 5 is a schematic structural diagram of a second grid plate of a cyclone separator with high heat exchange efficiency and temperature regulation according to an embodiment of the utility model.

In all the figures, the same reference numerals denote the same features, in particular: 1-water wall pipe, 2-first grid plate, 3-second grid plate, 11-water cooling pipe, 12-fin, 21-first welding groove, 22-first flow stabilizing groove, 23-first heat conducting hole, 31-second flow stabilizing groove, 32-second welding groove and 33-second heat conducting hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1-4, the present embodiment provides a novel cyclone separator with high efficiency tube heat temperature adjustment, which comprises a water wall tube 1 for making the side wall of the separator, and a first grid plate 2 and a second grid plate 3, wherein the separator comprises a vertical part and an inclined part, the two parts are the side wall of the separator, heat is taken away by introducing water flow into the water wall tube 1, the heat exchange efficiency can be adjusted by adjusting the flow rate of the water flow in the water wall tube 1, the water wall tube 1 further increases the evaporation heating surface, the heat exchange efficiency is improved, the first grid plate 2 and the second grid plate 3 are respectively welded on the water wall tube 1, the new evaporation heating surface is formed, simultaneously, the flue gas flow rate of the inner wall of the separator can be effectively reduced, the abrasion of particles in the flue gas to the water wall tube is reduced, the angles of the water wall tube 1 are welded by adjusting the first grid plate 2 and the second grid plate 3, the blocking effect of the cyclone separator and the blocking effect of the water cooling wall tube on the flue gas can be regulated and controlled, and the problems that the flue gas temperature is too high in the cyclone separator, the reburning is over-temperature, the water cooling wall tube is easily abraded and the heat exchange efficiency is low are solved.

Further, as shown in fig. 1-3, the water wall tube 1 includes water cooling tubes 11 and fins 12, preferably, the water cooling tubes 11 are arranged in parallel, the plate-shaped fins 12 connect two adjacent water cooling tubes 11 and can be fixed by welding, water flows exist in the water cooling tubes 11 and evaporate into steam due to continuous heat absorption to form a steam-water mixture, the steam-water mixture continuously contacts with the inner walls of the water cooling tubes 11 to take away heat on the water wall tube, when the feed water flow is increased, the rate of heat taken away by the steam-water mixture is increased, the heat exchange capacity of the evaporation heating surface of the water cooling tubes 11 is increased, and vice versa, the heat exchange capacity is reduced. Further, the fins 12 not only play a role in fixing, but also can increase the contact area with the flue gas, increase the heat exchange efficiency, and the fins 12 also have the function of fixing the first grating plate 2 and the second grating plate 3.

Further, as shown in fig. 1 and 3, the first grid plate 2 has a sheet-like structure, and includes a first welding groove 21, a first flow stabilizing groove 22, and a first heat conduction hole 23, wherein the first welding groove 21 is disposed at the edge of the contour contacting with the fin 12, and the first grid plate 2 is fixed by welding the first welding groove to the fin 12, the welding groove improves the welding firmness when the first grid plate 2 is installed, and can stably block high-temperature particles and achieve the effect of heat conduction under the condition of high flue gas flow velocity, further, the first grid plate 2 and the water cooling tube 11 are perpendicular to the water cooling wall tube 1, i.e. horizontal, the edge of the first grid plate 2 contacting with the water cooling tube 11 is provided with a heat conduction hole 5, which is an arc-shaped notch, and is disposed in a direction away from the water cooling tube 11, the heat conduction hole 5 can increase the heat exchange efficiency, and at the edge of the first grid plate 2 completely away from the fin 12, that is, the edge position of the first grid plate 2 near the center of the cyclone separator is provided with a flow stabilizing groove 23, the flow stabilizing groove 23 is also an arc-shaped notch, and the flow stabilizing groove 23 plays a role in stabilizing the flow of flue gas in the working process of the cyclone separator.

Further, as shown in fig. 1, 3, 4 and 5, the second grid plate 3 is thin and includes a second flow stabilizing groove 31, a second welding groove 32 and a second heat conducting hole 33, which are respectively identical to the first flow stabilizing groove 22, the first welding groove 21 and the first heat conducting hole 23 in shape and function, further, the second grid plate 3 is vertically welded and fixed on the fin 12, the first grid plate 2 and the second grid plate 3 are respectively fixed on the water wall tube 1 in a horizontal posture and a vertical posture, which can effectively reduce the flue gas flow velocity of the wall adhering part, prevent the flue gas from wearing the water wall tube, reduce the accident risk of tube explosion and the like, and meanwhile, the first grid plate 2 and the second grid plate 3 are both cast by using an alloy with good heat conductivity, which is welded on the fin 12, thereby increasing the effective heat exchange area of the evaporation heating surface, further, the welding angle of the two grid plates is adjustable, during specific engineering construction, can adjust welding angle according to the holistic heat transfer demand of boiler unit, adjust the effect that blocks of grid plate to adherence flue gas velocity of flow, thereby adjustment adherence flue gas velocity of flow and effective heat transfer area, play the effect of control heat transfer volume and temperature, preferably, can weld first grid plate 2 level at the vertical part of cyclone inner wall, the vertical welding of second grid plate 3, and can weld first grid plate 2 toward the angle that the separator center skew is 10 to 50 downwards to the slope inner wall, and simultaneously, second grid plate 3 on the slope inner wall adopts rhombus second grid plate 3 in FIG 5, this grid plate 3 is along fin 12 welding fixation down in the slant.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the utility model, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a but cyclone of high-efficient heat transfer temperature regulation, cyclone include vertical part and slope part, its characterized in that includes:

water wall pipe (1) to and fixed locating first grid board (2) and second grid board (3) on the water wall pipe (1), vertical portion with the slope part by water wall pipe (1) preparation, first grid board (2) include first welding groove (21), first steady flow groove (22) and first heat conduction hole (23), first welding groove (21) with water wall pipe (1) contact for improve welding strength, first steady flow groove (22) with first heat conduction hole (23) are the arc breach, first steady flow groove (22) are located first grid board (2) deviate from one side of water wall pipe (1), the opposite side is located in first heat conduction hole (23).

2. The cyclone separator with high-efficiency heat exchange and temperature regulation functions as claimed in claim 1, wherein the water wall tubes (1) comprise water cooling tubes (11) and fins (12), the water cooling tubes (11) are arranged in parallel, and two sides of each fin (12) are respectively fixed on two adjacent water cooling tubes (11).

3. A high efficiency heat exchange attemperable cyclone separator according to claim 1, wherein said first grid plate (2) is horizontally fixed to said vertical portion and said second grid plate (3) is vertically fixed to said vertical portion.

4. A high efficiency heat exchange attemperable cyclone separator according to claim 1, wherein said first grid plate (2) is inclined obliquely downwards at 10 ° to 50 ° fixed arrangement in said inclined section.

5. A cyclone separator with high-efficiency heat exchange and temperature regulation functions as claimed in claim 4, characterized in that in the inclined part, the second grid plate (3) adopts a diamond structure, the second grid plate (3) comprises a second flow stabilizing groove (31), a second welding groove (32) and a second heat conduction hole (33), the second flow stabilizing groove (31) and the second heat conduction hole (33) are arc-shaped notches, the second flow stabilizing groove (31) is arranged on one side of the second grid plate (3) away from the water wall tube (1), and the second heat conduction hole (33) is arranged on the other side.