阅读说明：本技术 一种便于除垢的燃煤锅炉 (Coal-fired boiler convenient to scale removal ) 是由 李鑫 于 2020-12-17 设计创作，主要内容包括：一种便于除垢的燃煤锅炉,涉及一种燃煤锅炉。本发明解决了现有的避免因水冷壁结垢造成燃煤锅炉的换热效果差的问题。本发明包括燃煤锅炉本体(1),它还包括至少一个能量收集层(2)和多个除垢套(3),至少一个能量收集层(2)安装在燃煤锅炉本体(1)内的水冷壁支撑板(4)的下方,且至少一个能量收集层(2)可拆卸安装在燃煤锅炉本体(1)内的水冷壁(5)上,至少一个能量收集层(2)位于燃煤锅炉本体(1)内燃烧室(6)的上部,每根水冷壁(5)上套装有多个除垢套(3),且每个除垢套(3)与水冷壁(5)之间为间隙配合,并可拆卸连接。本发明用于燃煤锅炉。(A coal-fired boiler convenient for descaling relates to a coal-fired boiler. The invention solves the problem of poor heat exchange effect of the existing coal-fired boiler caused by scaling of the water-cooled wall. The coal-fired boiler comprises a coal-fired boiler body (1), and further comprises at least one energy collecting layer (2) and a plurality of descaling sleeves (3), wherein the at least one energy collecting layer (2) is arranged below a water-cooled wall support plate (4) in the coal-fired boiler body (1), the at least one energy collecting layer (2) is detachably arranged on a water-cooled wall (5) in the coal-fired boiler body (1), the at least one energy collecting layer (2) is positioned at the upper part of a combustion chamber (6) in the coal-fired boiler body (1), the descaling sleeves (3) are sleeved on each water-cooled wall (5), and the descaling sleeves (3) are in clearance fit with the water-cooled wall (5) and are detachably connected. The invention is used for coal-fired boilers.)

1. The utility model provides a coal fired boiler convenient to scale removal, it includes coal fired boiler body (1), its characterized in that: it still includes at least one energy collection layer (2) and a plurality of scale removal cover (3), the below of water-cooling wall backup pad (4) in coal fired boiler body (1) is installed in at least one energy collection layer (2), and at least one energy collection layer (2) demountable installation is on water-cooling wall (5) in coal fired boiler body (1), at least one energy collection layer (2) are located the upper portion of firing chamber (6) in coal fired boiler body (1), every water-cooling wall (5) is gone up the cover and is equipped with a plurality of scale removal cover (3), and be clearance fit between every scale removal cover (3) and water-cooling wall (5), and the connection can be dismantled.

2. A coal fired boiler facilitating descaling according to claim 1, wherein: the energy collecting layer (2) is an energy collecting net made of tungsten wires.

3. A coal fired boiler facilitating descaling according to claim 2, wherein: the mesh shape of the energy collecting net is diamond or circular.

4. A coal-fired boiler facilitating descaling according to claim 3, wherein: the mesh number of the energy collecting net is 200-500.

5. A coal fired boiler facilitating descaling according to claim 4, wherein: the descaling sleeve (3) is formed by enclosing a grid plate.

6. A coal fired boiler facilitating descaling according to claim 5, wherein: the intersections of the grid plates are connected by a plurality of bolts 7.

7. A coal fired boiler facilitating descaling according to claim 5, wherein: the intersections of the grid plates are connected by tungsten wires.

8. A coal-fired boiler for facilitating descaling according to claim 5, 6 or 7, wherein: the descaling device also comprises at least one stirring rod (8) with a handle, and the stirring rod (8) is inserted in the descaling sleeve (3) along the axial direction of the water wall (5).

9. A coal fired boiler facilitating descaling according to claim 8, wherein: the descaling sleeve (3) and the stirring rod (8) are both made of tungsten wires.

Technical Field

The invention relates to a coal-fired boiler, in particular to a coal-fired boiler convenient for descaling.

Background

The coal-fired boiler refers to coal which is burnt by fuel, the heat of the coal is converted to generate steam or become hot water, but not all the heat is converted effectively, and a part of the heat is consumed without work, so that the efficiency problem exists, and the efficiency of the general large boiler is higher and is between 60% and 80%. Due to the increasing market demand, the number of production enterprises is increased rapidly, and the industry scale is enlarged continuously.

The development of industrial boiler industry has been successful, but there is still a worry. First, the overall state of the art is on the rise. The problems of too many manufacturers, scattered production, low production capacity of most enterprises, unbalanced development among the enterprises, low production concentration and the like still exist in the existing industry. Through investigation, although most enterprises effectively improve the activity of the enterprises and obviously enhance the market reaction capability by converting the operation mechanism, part of the enterprises still lack the long-term development strategy, so that the autonomous development and innovation capability of the enterprises is not strong and the investment is insufficient, the grade and level of product development are still not high, and the product performance quality is not obviously improved. The obvious problem is that the market competition is low, and the technical level and economic benefit of the industry are not rapidly improved.

With the continuous development of the field of coal-fired boilers in recent years, aiming at the problems existing in the use of the existing coal-fired boilers, the aspects of energy conservation, emission reduction, energy consumption reduction and the like are continuously optimized, and how to collect and utilize the heat in the coal-fired boilers to the maximum extent is one of the subjects researched by the industry.

At present, most of coal-fired boilers exchange heat between heat generated after coal in a combustion chamber is combusted and cold water in a water-cooled wall, and then directly supply hot water after heat exchange for users. The heat source of the heat exchange mainly depends on the heat of combustion of the combustion chamber, coal in the combustion chamber can generate smoke and coal ash when being combusted, when the heat exchange is carried out with the water-cooled wall, the scaling is easily generated outside the water-cooled wall, once the water-cooled wall is scaled, the heat exchange between the water-cooled wall and the heat generated after the coal in the combustion chamber is combusted can be influenced, and further the waste of energy is caused.

Disclosure of Invention

The invention avoids the problem of poor heat exchange effect of the coal-fired boiler caused by scaling of the water-cooled wall. Provides a coal-fired boiler convenient for descaling.

The invention has the technical scheme that the coal-fired boiler convenient for descaling comprises a coal-fired boiler body 1, at least one energy collecting layer 2 and a plurality of descaling sleeves 3, wherein the at least one energy collecting layer 2 is arranged below a water wall supporting plate 4 in the coal-fired boiler body 1, the water wall supporting plate 4 can be contacted with white and blue light of flame burning of coal to facilitate the absorption of heat of the flame, the at least one energy collecting layer 2 is detachably arranged on a water wall 5 in the coal-fired boiler body 1, one layer or two layers or three layers of energy collecting layers are generally adopted, the distance between every two adjacent energy collecting layers is 10-30cm, mainly in order to ensure that when a combustion chamber burns, the two energy collecting layers can receive the white and blue light layer of the flame, if the distance is too large, the energy collecting layer at the lowest layer can be contacted with only a part of the white and blue light of the flame, if the interval undersize, also do not benefit to thermal quick collection, at least one energy collecting layer 2 is located coal fired boiler body 1 internal combustion chamber 6's upper portion, every water-cooled wall 5 goes up the cover and is equipped with a plurality of scale sleeves 3, can provide necessary and nimble space for the installation of energy collecting layer, in addition, be clearance fit between every scale sleeve 3 and the water-cooled wall 5, mainly can produce the phenomenon of an expend with heat and contract with cold when preventing cold and hot water in the water-cooled wall in turn, prevent that the scale sleeve from influencing the expend with heat and contract with cold change of water-cooled wall self, and can dismantle the connection.

Compared with the prior art, the invention has the following improvement effects:

the invention mainly has two core beneficial effects, and the specific technical effects are as follows:

1. the invention installs a plurality of layers of energy collecting layers on the upper part of a combustion chamber of a coal-fired boiler, the energy collecting layers are woven into a grid shape by adopting tungsten wires and are installed in the combustion chamber at equal intervals or variable intervals, when the energy collecting layers are installed at equal intervals or variable intervals, the type of the coal to be combusted is considered, and the height and the position of flame generated by the coal are detected in the actual use process, so that the position where white and blue light in the flame has the highest probability is found. As the tungsten can resist the high temperature of 1400 DEG-1500 DEG, the energy collecting layer made of tungsten wires is heated, the energy collecting layer stores the heat after heating, when the coal in the combustion chamber is burnt out or the temperature in the combustion chamber is lower than the temperature collected by the energy collecting layer, the heat provided by the energy collecting layer is released, the heat is transferred to the water-cooled wall, and the heat exchange with the water-cooled wall is continued. Therefore, the invention can effectively collect the heat in the combustion chamber, release the heat and exchange heat with the water-cooled wall, thereby increasing the heat utilization rate of coal combustion and further reducing energy consumption.

2. When the scale is formed and slag is bonded on the outer pipe wall of the water-cooled wall, the scale removing sleeve which is also made of high-temperature-resistant tungsten is adopted, the scale removing sleeve can collect heat in the combustion chamber, can play a role in continuously preserving the water temperature of the water-cooled wall, and is effective and prolonged in heat energy utilization. The descaling sleeve is characterized in that the descaling sleeve is arranged on the outer wall of the coal-fired boiler, and the stirring rod 8 with a handle is arranged in the descaling sleeve.

3. Because the descaling sleeve of the invention has short length, the descaling sleeve is easier to operate when descaling. Saving manpower, material resources and financial resources.

4. The invention also provides a descaling mode of the stirring rod 8 without a handle, which is characterized in that the joint of the descaling sleeve is suddenly in a relaxed state by unscrewing the bolt, so that the scale and the slag on the scaled descaling sleeve are cracked, and the descaling and deslagging are realized.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a front view of an energy collection layer.

Fig. 3 is a top view of fig. 2.

FIG. 4 is a scale formation diagram of the junction of the water wall and the grid plate in a state of being connected by a plurality of bolts 7.

Fig. 5 is a top view of fig. 4.

FIG. 6 is a schematic diagram of scaling at the junction of the water wall and the grid plate in a state of being connected by tungsten filament sewing.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 6, and the coal-fired boiler convenient for descaling of the embodiment includes a coal-fired boiler body 1, at least one energy collection layer 2 and a plurality of descaling sleeves 3, wherein the at least one energy collection layer 2 is installed below a water-cooled wall support plate 4 in the coal-fired boiler body 1, the at least one energy collection layer 2 is detachably installed on a water-cooled wall 5 in the coal-fired boiler body 1, the at least one energy collection layer 2 is located on the upper portion of a combustion chamber 6 in the coal-fired boiler body 1, the plurality of descaling sleeves 3 are sleeved on each water-cooled wall 5, and each descaling sleeve 3 is in clearance fit with the water-cooled wall 5 and is detachably connected with the water-cooled wall 5.

In this embodiment, on the basis of the first embodiment, specifically, the number of the energy collection layers 2 is optimally 2 layers, or 3 layers, or 4 layers.

Because the length and the size of the energy collecting layer are similar to the size of a combustion chamber in the coal-fired boiler, the energy collecting layer can store more heat, especially under the condition of adopting a plurality of layers of energy collecting layers, the energy can be mutually kept and supplied, the coal resource is effectively saved, and the combustion cost of the coal-fired boiler is further reduced.

The energy collecting layer can be used for 5 to 8 years after being installed once, and has high economic benefit and no need of a large amount of maintenance cost in the long term.

In this embodiment, based on the first embodiment, specifically, the energy collection layer 2 is an energy collection mesh made of tungsten wires.

Because tungsten is high temperature resistant, be fit for using in coal fired boiler, tungsten can store a large amount of heat energy moreover, can also transmit the heat.

In this embodiment, based on the first embodiment, specifically, the mesh shape of the energy collecting net is a diamond shape or a circular shape.

The rhombus or the circle is mainly used for facilitating upward movement of flame, and certain obstruction to normal combustion of flame in the combustion chamber is avoided.

And the rhombic or round hole is convenient to process, a plurality of tungsten wires are adopted to be screwed into a strand of thick tungsten wire, and then the screwed thick tungsten wire is used for processing into the energy collecting layer of the rhombic or round hole.

The present embodiment is based on the first embodiment, and specifically, the mesh number of the energy collecting net is 200-500.

The collection net with the purposes of 200-500 is used for not only satisfying the heat storage but also not preventing the upward movement of the flame.

If too large a number of collecting meshes are used, the storage of heat is not favoured, i.e. the amount of heat stored is reduced.

On the contrary, if the collection net mesh number is too small, the upward movement of flames is not facilitated, and the multi-layer collection net is adopted in the application, and if the collection net mesh number is small, the heat of white and blue light of the flames, which can be received by the collection net located at the uppermost layer, is reduced.

When the multi-layer energy collecting net is actually used, the mesh number of the multi-layer energy collecting net is gradually increased from bottom to top.

In this embodiment, based on the first embodiment, specifically, the descaling jacket 3 is formed by enclosing a grid plate.

The grid plate is adopted, so that heat can be conveniently and quickly transferred to the water-cooled wall, and the problem that heat exchange of the water-cooled wall is influenced after the outer wall of the water-cooled wall is wrapped by a layer of thin plate is solved.

In addition, the grid plate is adopted for enclosing, so that the installation and the disassembly are convenient.

In this embodiment, on the basis of the first embodiment, specifically, the intersections of the grid plates are connected by a plurality of bolts 7.

The connecting mode is simple, and in practical use, one descaling sleeve is connected by 4 or 6 bolts. And the distance between two adjacent bolts will be a bit bigger, like this when loosening the bolt, the net board can be smooth quick flick, realize the separation and the piece that collapses to scale deposit and slagging scorification. The descaling speed is improved and accelerated, and the manpower and time can be effectively saved.

In this embodiment, on the basis of the first embodiment, specifically, the intersections of the grid plates are connected by tungsten filament sewing.

The grid plates are connected by using a tungsten wire sewing mode, mainly for matching with the stirring rod 8, and the sewing of the grid plates is not too tight, otherwise, the insertion of the stirring rod 8 is influenced.

The embodiment is based on the first embodiment, and particularly, the descaling device further comprises at least one stirring rod 8 with a handle, and the stirring rod 8 is inserted into the descaling sleeve 3 along the axial direction of the water wall 5.

Stirring stick 8 mainly is for using when using with the intersection of grid plate adopts the tungsten filament to sew up the connection, and stirring stick 8 is motionless at ordinary times, and stirring stick 8 also is that the tungsten filament is made, can be high temperature resistant, and when needs scale removal, only need we rock stirring stick 8, will stir stick 8 and loosen the grid plate. Therefore, the scaled impurities can be broken and fall off without being knocked by workers, and the service life of the water-cooled wall is ensured.

In this embodiment, based on the first embodiment, specifically, the descaling jacket 3 and the stirring rod 8 are made of tungsten wire.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. 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," "second," etc. 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 otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.