Hearth assembly of coal-fired power generation boiler

Abstract

The utility model relates to the technical field of hearths, and discloses a hearth assembly of a coal-fired power generation boiler, which comprises a hearth mechanism, a feeding door and an air inlet pipe, the feeding door and the air inlet pipe are respectively communicated with the front side and the left side of the hearth mechanism, the right side of the hearth mechanism is communicated with a square pipe, and a filter module is inserted in an inner cavity of the square pipe. An air outlet of the square pipe is communicated with a three-way valve set, the back face of the three-way valve set is communicated with a bent pipe, the bent pipe is communicated with the air inlet pipe, a limiting mechanism is inserted into the top of the filtering module and comprises a T-shaped arm, and a spring is connected between the T-shaped arm and the filtering module. According to the hearth assembly of the coal-fired power generation boiler, the combustion effect of fuel is improved, then waste gas is recycled, energy loss is reduced, the filtering module is rapidly assembled and disassembled from the interior of the square pipe through the additionally-arranged T-shaped arm, spring, connecting rod, clamping block and clamping frame, and therefore the assembling and disassembling speed of the filtering module is increased, and the assembling and disassembling efficiency of the filtering module is improved. And a worker can conveniently maintain and overhaul the filtering module.

Description

Technical Field

[0001] This utility model relates to the field of furnace technology, specifically to a furnace assembly for a coal-fired power generation boiler. Background Technology

[0002] Coal-fired boilers convert chemical energy into thermal energy by burning coal, which in turn generates high-temperature, high-pressure steam to drive a steam turbine to generate electricity.

[0003] Coal-fired boilers mainly consist of a furnace and water-cooled walls, superheaters and reheaters, and air preheaters. In order to improve the combustion efficiency, a fan is added inside the furnace during use. However, the airflow generated by the fan is directly discharged after being filtered after entering the furnace, which increases energy loss and reduces the overall efficiency of the unit. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a furnace assembly for a coal-fired power generation boiler, thereby solving the technical problem that the airflow generated by the aforementioned fan is directly discharged after entering the furnace through filtration, which increases energy consumption and reduces the overall performance of the device.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a furnace assembly for a coal-fired power generation boiler, comprising: a furnace mechanism, a feed gate, and an air inlet pipe. The feed gate and the air inlet pipe are respectively connected to the front and left side of the furnace mechanism. A square tube is connected to the right side of the furnace mechanism. A filter module is inserted into the inner cavity of the square tube. A three-way valve assembly is connected to the outlet of the square tube. A bend is connected to the back of the three-way valve assembly. The bend is connected to the air inlet pipe.

[0008] A limiting mechanism is inserted into the top of the filter module. The limiting mechanism includes a T-shaped arm. A spring connects the T-shaped arm to the filter module. Both sides of the T-shaped arm are connected to connecting rods via hinges. The other end of the connecting rod is connected to a locking block via a hinge. A locking frame is fitted around the locking block. The locking frame is assembled on the top left and right sides of the square tube.

[0009] Preferably, the feed door includes a door frame, and a door panel is connected to the front of the door frame by a hinge. A sealing sleeve and a door lock are installed between the door panel and the door body. The feed door facilitates the cleaning of fuel in the inner cavity of the furnace mechanism.

[0010] Preferably, the filter module includes a filter element, and a fixing plate is mounted on the top of the filter element. The filter module can filter and clean the exhaust gas entering the inner cavity of the square tube.

[0011] Preferably, the top of the square tube is provided with a vertical groove that is compatible with the filter module, and a sealing gasket is connected between the vertical groove and the filter module. The vertical groove facilitates the assembly of the filter module and the square tube.

[0012] Preferably, the top of the filter module is provided with a sliding groove that is adapted to the T-shaped arm. The sliding groove is connected to the spring, which facilitates the sliding connection of the T-shaped arm and the fixed connection of the spring.

[0013] Preferably, a pressure plate is connected to the top of the T-arm, and the top of the pressure plate is provided with anti-slip texture, which makes it convenient for the operator to drive the T-arm to move.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides a furnace assembly for a coal-fired power generation boiler, which has the following beneficial effects:

[0016] The furnace assembly of this coal-fired power boiler, through the addition of square tubes, three-way valve groups, bends, and filter modules, can filter and clean the gas inside the furnace before it is discharged back into the furnace, improving the combustion efficiency of the fuel and recycling the exhaust gas to reduce energy consumption. The filter modules can be quickly installed and removed from the inside of the square tubes through the addition of T-shaped arms, springs, connecting rods, locking blocks, and locking frames, thereby increasing the installation and removal speed of the filter modules and facilitating maintenance and repair by the staff. Attached Figure Description

[0017] Figure 1 This is a front view of the present utility model;

[0018] Figure 2 This is a front view of the square tube of this utility model;

[0019] Figure 3 This is a schematic diagram of the external appearance of the filter module of this utility model;

[0020] Figure 4 This is an external schematic diagram of the limiting mechanism of this utility model.

[0021] In the diagram: 1. Furnace mechanism; 2. Feed gate; 3. Air inlet pipe; 4. Square tube; 41. Three-way valve assembly; 42. Bend; 5. Filter module; 6. Limiting mechanism; 61. T-arm; 62. Spring; 63. Connecting rod; 64. Locking block; 65. Locking frame; 66. Pressure plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides a technical solution, please refer to Figure 1 and Figure 2 A furnace assembly for a coal-fired power generation boiler includes: a furnace mechanism 1, a feed gate 2, and an air inlet pipe 3. The feed gate 2 and the air inlet pipe 3 are respectively connected to the front and left side of the furnace mechanism 1. A square tube 4 is connected to the right side of the furnace mechanism 1. A filter module 5 is inserted into the inner cavity of the square tube 4. A three-way valve group 41 is connected to the outlet of the square tube 4. A bend pipe 42 is connected to the back of the three-way valve group 41. The bend pipe 42 is connected to the air inlet pipe 3.

[0024] The furnace mechanism 1, the feed gate 2, and the air inlet pipe 3 are furnace components in existing coal-fired power generation boilers. The square tube 4, together with the filter module 5, can filter the exhaust gas generated by the furnace mechanism 1. The three-way valve group 41 is a common three-way valve in the prior art, used to control the reverse flow of exhaust gas. The bend 42 is used to discharge the recovered exhaust gas back into the interior of the furnace mechanism 1. An air pump can be installed on the outside of the furnace mechanism 1.

[0025] Please see Figure 3 and Figure 4 A limiting mechanism 6 is inserted into the top of the filter module 5. The limiting mechanism 6 includes a T-shaped arm 61. A spring 62 is connected between the T-shaped arm 61 and the filter module 5. Both sides of the T-shaped arm 61 are connected to a connecting rod 63 by hinges. The other end of the connecting rod 63 is connected to a locking block 64 by hinges. A locking frame 65 is sleeved on the outside of the locking block 64. The locking frame 65 is assembled on the top left and right sides of the square tube 4.

[0026] The T-shaped arm 61 can drive the connecting rod 63 for transmission. The connecting rod 63 can drive the locking block 64 to insert into the inside of the locking frame 65. The top two sides of the filter module 5 are provided with track grooves that are slidably connected to the locking block 64. The track grooves can restrict the linear movement of the locking block 64. The locking frame 65 can restrict the locking block 64 and the filter module 5.

[0027] The feed door 2 includes a door frame, and a door panel is connected to the front of the door frame by a hinge. A sealing sleeve and a door lock are installed between the door panel and the door body. The feed door 2 facilitates the cleaning of fuel in the inner cavity of the furnace mechanism 1. The filter module 5 includes a filter element, and a fixing plate is installed on the top of the filter element. The filter module 5 can filter and clean the exhaust gas entering the inner cavity of the square tube 4.

[0028] The top of the square tube 4 is provided with a vertical groove that is compatible with the filter module 5. A sealing gasket is connected between the vertical groove and the filter module 5. The vertical groove facilitates the assembly of the filter module 5 and the square tube 4. The top of the filter module 5 is provided with a sliding groove that is compatible with the T-shaped arm 61. The sliding groove is connected to the spring 62. The sliding groove facilitates the sliding connection of the T-shaped arm 61 and the fixed connection of the spring 62. The top of the T-shaped arm 61 is connected with a pressure plate 66. The top of the pressure plate 66 is provided with anti-slip texture. The pressure plate 66 facilitates the operation of the T-shaped arm 61 by the operator.

[0029] This solution connects an external fan to the furnace mechanism 1. Activating the fan increases the combustion speed of the fuel inside the furnace mechanism 1. The airflow generated by the fan passes through the inner cavity of the furnace mechanism 1 and enters the interior of the square tube 4. After being filtered by the filter element inside the filter module 5, it enters the interior of the three-way valve group 41. The operator can control the three-way valve group 41 to select whether the airflow is discharged directly or enters the interior of the air inlet pipe 3 and is discharged back into the interior of the furnace mechanism 1 to drive the fuel inside the furnace mechanism 1.

[0030] The staff can pull the pressure plate 66 up, thereby pulling the locking block 64 to slide closer to the T-shaped arm 61 via the connecting rod 63, thereby releasing the restriction of the locking block 64 by the locking frame 65. At this time, the filter module 5 can be pulled out from the inside of the square tube 4 for cleaning and maintenance.

[0031] By adding square tube 4, three-way valve group 41, elbow 42 and filter module 5, the gas inside the furnace mechanism 1 can be filtered and cleaned before being discharged back into the furnace mechanism 1, improving the combustion efficiency of the fuel and recycling the exhaust gas to reduce energy consumption. By adding T-shaped arm 61, spring 62, connecting rod 63, locking block 64 and locking frame 65, the filter module 5 can be quickly loaded and unloaded from the inside of square tube 4, thereby improving the loading and unloading speed of filter module 5 and facilitating the maintenance and repair of filter module 5 by staff.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A furnace assembly for a coal-fired power generation boiler, comprising: The furnace mechanism (1), the feed gate (2) and the air inlet pipe (3) are respectively connected to the front and left side of the furnace mechanism (1). The furnace mechanism (1) is characterized in that: a square tube (4) is connected to the right side of the furnace mechanism (1), a filter module (5) is inserted into the inner cavity of the square tube (4), a three-way valve group (41) is connected to the air outlet of the square tube (4), a bend pipe (42) is connected to the back of the three-way valve group (41), and the bend pipe (42) is connected to the air inlet pipe (3). A limiting mechanism (6) is inserted into the top of the filter module (5). The limiting mechanism (6) includes a T-shaped arm (61). A spring (62) is connected between the T-shaped arm (61) and the filter module (5). Both sides of the T-shaped arm (61) are connected to a connecting rod (63) by a hinge. The other end of the connecting rod (63) is connected to a locking block (64) by a hinge. A locking frame (65) is fitted on the outside of the locking block (64). The locking frame (65) is assembled on the top left and right sides of the square tube (4).

2. A furnace assembly for a coal-fired power boiler according to claim 1, characterized in that: The feed door (2) includes a door frame, and a door panel is connected to the front of the door frame by a hinge. A sealing sleeve and a door lock are installed between the door panel and the door body.

3. A furnace assembly for a coal-fired power boiler according to claim 1, characterized in that: The filter module (5) includes a filter element, and a fixing plate is mounted on the top of the filter element.

4. A furnace assembly for a coal-fired power boiler according to claim 1, characterized in that: The top of the square tube (4) is provided with a vertical groove that is compatible with the filter module (5), and a sealing gasket is connected between the vertical groove and the filter module (5).

5. A furnace assembly for a coal-fired power boiler according to claim 1, characterized in that: The top of the filter module (5) is provided with a sliding groove that is adapted to the T-shaped arm (61), and the sliding groove is connected to the spring (62).

6. The furnace assembly of a coal-fired power generation boiler according to claim 1, characterized in that: The top of the T-shaped arm (61) is connected to a pressure plate (66), and the top of the pressure plate (66) is provided with anti-slip texture.

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