Pulverized coal combustion steam boiler

Abstract

The utility model discloses a pulverized coal combustion steam boiler, and relates to the technical field of steam boilers. Comprising a boiler body, two combustors are sequentially and evenly arranged on the lower side wall of the boiler body from left to right, two water storage cavities are sequentially formed in the positions, corresponding to the upper surfaces of the combustors, of the boiler body from left to right, a smoke exhaust chamber is arranged in the boiler body and close to the left side, and deslagging mechanisms are arranged in the middle of the lower surface of the boiler body and close to the left and right positions; a separation mechanism is mounted between the front and rear parts of the boiler main body; a branch pipe is mounted on the upper surface of the boiler main body corresponding to the water storage cavity; according to use requirements, the combustors with the corresponding number can be selected, combustion is conducted on the corresponding water storage cavities, use is more energy-saving, dust in the combustion chambers can be conveniently cleaned, the high-pressure anti-explosion function is added, high-pressure gas can be conveniently exhausted, the temperature of the exhausted gas is lower, and installation hidden dangers and environmental pollution cannot be caused.

Description

Technical Field

[0001] The utility model relates to the technical field of steam boilers, in particular to a pulverized coal combustion steam boiler. Background Technique

[0002] A pulverized coal steam boiler is a boiler that produces steam by burning pulverized coal, which consists of a furnace, a burner, etc., improving the combustion rate of coal, being highly efficient and energy-saving, and having simple startup and shutdown.

[0003] In the prior art, during the use of a pulverized coal combustion steam boiler, the burner mostly burns the entire water chamber. When the steam demand is small, the burner cannot be adjusted according to the usage situation, resulting in waste of resources, and the combustion dust is not easily discharged. During the use process, the boiler lacks a protection function. When the internal pressure of the water storage chamber is too high, there are safety hazards such as explosion. Content of the Utility Model

[0004] The utility model provides a pulverized coal combustion steam boiler to solve the problems in the background technique.

[0005] To achieve the above object, the utility model provides the following technical solution: A pulverized coal combustion steam boiler, including a boiler main body. On the lower side wall of the boiler main body, two groups of burners are evenly arranged in sequence from left to right. On the upper surface of the burners, two water storage chambers are arranged in sequence from left to right on the corresponding boiler main body. A smoke exhaust chamber is arranged near the left side inside the boiler main body, and a smoke exhaust pipe is installed on the upper surface of the corresponding boiler main body of the smoke exhaust chamber. A slag discharge mechanism is arranged near the left and right positions in the middle of the lower surface of the boiler main body. A partition mechanism is installed between the front and rear inner sides of the boiler main body. A branch pipe is installed on the upper surface of the corresponding water storage chamber of the boiler main body. An exhaust pipeline is fixedly installed on the upper surface of the branch pipe. A protection mechanism is arranged on the exhaust pipeline, and the lower surface of the protection mechanism is communicated with a cooling mechanism.

[0006] Further, a filtering component is arranged in the smoke exhaust chamber.

[0007] Further, the slag discharge mechanism includes a slag discharge pipe and a sealing cover. The slag discharge pipe is fixedly installed on the lower surface of the boiler main body, and the sealing cover is installed on the lower surface of the slag discharge pipe in a threaded manner.

[0008] Further, the partition mechanism includes an electric linear module and a partition plate. The electric linear module is installed on the front and rear side walls of the boiler main body, and the partition plate is fixedly installed between the sliding platforms of the front and rear electric linear modules.

[0009] Further, one-way air valves are fixedly installed on the branch pipes.

[0010] Further, the protection mechanism includes a rectangular box, an air outlet pipe, a bolt rod, a bearing assembly, a moving plate, a spring, a pressing plate and a guide rod. The rectangular box is fixedly installed on the exhaust pipe. An air outlet pipe is fixedly installed on the upper surface of the exhaust pipe corresponding to the rectangular box. A bolt rod is threadedly installed on the upper surface of the rectangular box. The lower surface of the bolt rod is installed with a moving plate through the bearing assembly. A spring is fixedly installed on the lower surface of the moving plate in a rectangular shape. A pressing plate is fixedly installed on the lower surface of the spring. A guide rod is fixedly installed on the upper surface of the pressing plate, and the guide rod is movably inserted into the moving plate.

[0011] Further, the cooling mechanism includes a cold water tank, a connecting pipe and an air outlet head. The cold water tank is fixedly installed on the right side of the boiler body. The cold water tank is connected to the rectangular box through the connecting pipe. An air outlet head is installed on the upper surface of the cold water tank.

[0012] Compared with the prior art, the utility model provides a pulverized coal combustion steam boiler, which has the following beneficial effects:

[0013] 1. For this pulverized coal combustion steam boiler, by setting two groups of burners, two water storage chambers and a partition mechanism, one or two groups of burners can be opened according to the use requirements, the corresponding number of burners can be selected, and the corresponding water storage chamber can be burned, which is more energy-saving in use and is convenient for cleaning the dust in the combustion chamber.

[0014] 2. For this pulverized coal combustion steam boiler, by setting the protection mechanism, the high-pressure explosion-proof function of the water storage chamber is increased, the high-pressure gas is discharged conveniently, and the discharged gas is cooled by the cooling mechanism, so that no installation hidden danger and environmental pollution will be caused. Description of the Drawings

[0015] Figure 1 is a structural schematic diagram of the utility model;

[0016] Figure 2 is a sectional view of the boiler body of the utility model;

[0017] Figure 3 is a sectional view of the protection mechanism of the utility model.

[0018] In the figure: 1. Boiler main body; 2. Burner; 3. Water storage chamber; 4. Smoke exhaust chamber; 5. Smoke exhaust pipe; 6. Slag discharge mechanism; 601. Slag discharge pipe; 602. Sealing cover; 7. Partition mechanism; 701. Electric linear module; 702. Partition board; 8. Branch pipe; 9. Exhaust pipeline; 10. Protection mechanism; 101. Rectangular box; 102. Air outlet pipe; 103. Bolt rod; 104. Bearing assembly; 105. Moving plate; 106. Spring; 107. Pressing plate; 108. Guide rod; 11. Cooling mechanism; 111. Cold water tank; 112. Connecting pipe; 113. Air outlet head; 12. Filter assembly; 13. Check valve. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1 - 3 , the present invention discloses a pulverized coal combustion steam boiler, including a boiler main body 1. Two groups of burners 2 are evenly arranged on the lower side wall of the boiler main body 1 from left to right in sequence. Two water storage chambers 3 are arranged on the boiler main body 1 corresponding to the upper surface of the burners 2 from left to right in sequence. A smoke exhaust chamber 4 is arranged near the left side in the boiler main body 1, and a smoke exhaust pipe 5 is installed on the upper surface of the boiler main body 1 corresponding to the smoke exhaust chamber 4. A slag discharge mechanism 6 is arranged near the left and right positions in the middle of the lower surface of the boiler main body 1. A partition mechanism 7 is installed between the front and rear inner sides of the boiler main body 1. A branch pipe 8 is installed on the upper surface of the boiler main body 1 corresponding to the water storage chamber 3. An exhaust pipeline 9 is fixedly installed on the upper surface of the branch pipe 8. A protection mechanism 10 is arranged on the exhaust pipeline 9. The lower surface of the protection mechanism 10 is communicated with a cooling mechanism 11.

[0021] Specifically, a filter assembly 12 is arranged in the smoke exhaust chamber 4.

[0022] In this implementation manner, the filter assembly 12 can purify the flue gas, and the filter assembly 12 adopts a conventional flue gas filter element.

[0023] Specifically, the slag discharge mechanism 6 includes a slag discharge pipe 601 and a sealing cover 602. The slag discharge pipe 601 is fixedly installed on the lower surface of the boiler main body 1, and a sealing cover 602 is threadedly installed on the lower surface of the slag discharge pipe 601.

[0024] In this implementation manner, when the sealing cover 602 is opened, it is convenient for the slag to be discharged through the slag discharge pipe 601.

[0025] Specifically, the separation mechanism 7 includes an electric linear module 701 and a partition plate 702. The electric linear module 701 is installed on the front and rear side walls of the boiler main body 1, and a partition plate 702 is fixedly installed between the sliding tables of the front and rear electric linear modules 701.

[0026] In this embodiment, the front and rear electric linear modules 701 drive the partition plate 702 to move left and right. When the partition plate 702 is located between the left and right groups of burners 2, a separation is formed. At the same time, the partition plate 702 can scrape off the dust in the boiler main body 1.

[0027] Specifically, one-way air valves 13 are fixedly installed on the branch pipes 8.

[0028] In this embodiment, the one-way air valves 13 prevent the steam from flowing back through the branch pipes 8.

[0029] Specifically, the protection mechanism 10 includes a rectangular box 101, an air outlet pipe 102, a bolt rod 103, a bearing assembly 104, a moving plate 105, a spring 106, a pressing plate 107, and a guide rod 108. The rectangular box 101 is fixedly installed on the exhaust pipe 9. An air outlet pipe 102 is fixedly installed on the upper surface of the exhaust pipe 9 corresponding to the rectangular box 101. The bolt rod 103 is threadedly installed on the upper surface of the rectangular box 101. The lower surface of the bolt rod 103 is installed with a moving plate 105 through the bearing assembly 104. A spring 106 is fixedly installed on the lower surface of the moving plate 105 in a rectangular shape. The lower surface of the spring 106 is fixedly installed with a pressing plate 107. A guide rod 108 is fixedly installed on the upper surface of the pressing plate 107, and the guide rod 108 is movably inserted into the moving plate 105.

[0030] In this embodiment, when the air pressure in the exhaust pipe 9 is too high, the pressing plate 107 will be pushed upward to achieve the effect of pressure relief. The bearing assembly 104 is driven by the bolt rod 103 to move up and down, so that the bearing assembly 104 drives the spring 106 on the lower surface of the moving plate 105 to move up and down, and the spring 106 drives the pressing plate 107 to move up and down, and the pressure relief pressure can be adjusted.

[0031] Specifically, the cooling mechanism 11 includes a cold water tank 111, a connecting pipe 112, and an air outlet head 113. The cold water tank 111 is fixedly installed on the right side of the boiler main body 1. The cold water tank 111 is connected to the rectangular box 101 through the connecting pipe 112. An air outlet head 113 is installed on the upper surface of the cold water tank 111.

[0032] In this embodiment, the high-pressure steam flows into the cold water tank 111 through the connecting pipe 112. The cold water tank 111 cools and buffers the high-pressure steam, and then discharges it through the air outlet head 113.

[0033] In use, when high-load steam operation is required, the two groups of burners 2 synchronously combust the two water storage chambers 3. When low-load steam operation is required, the front and rear electric linear modules 701 in the partitioning mechanism 7 drive the partition plate 702 to move left and right. When the partition plate 702 is located between the left and right groups of burners 2, it forms a partition for the two groups of burners 2 and the water storage chambers 3. Only the left burner 2 combusts the left water storage chamber 3 to generate steam, which is more energy-efficient. After the boiler body 1 is used, the partition plate 702 reciprocates left and right, which can remove the slag on the inner wall of the combustion chamber corresponding to the burner 2 and discharge it through the left and right slag discharge pipes 601. During use, when the high pressure in the water storage chamber 3 is too high, at this time, the air outlet pipe 102 in the protection mechanism 10 will push the pressure plate 107 upward, and the pressure plate 107 compresses the spring 106 to achieve the effect of pressure relief. The bearing assembly 104 is driven to move up and down by the bolt rod 103, so that the bearing assembly 104 drives the spring 106 on the lower surface of the moving plate 105 to move up and down, and the spring 106 drives the pressure plate 107 to move up and down, which can adjust the pressure relief pressure. And the gas discharged from the rectangular box 101 flows into the cold water tank 111 through the connecting pipe 112 in the temperature reduction mechanism 11. The cold water tank 111 cools and buffers the high-pressure steam, and then discharges it through the air outlet head 113, which will not cause installation hazards and environmental pollution.

[0034] In summary, this pulverized coal combustion steam boiler can select the corresponding number of burners 2 according to the usage requirements and combust the corresponding water storage chambers 3, which is more energy-efficient, and is convenient for cleaning the dust in the combustion chamber, adding a high-pressure explosion-proof function, facilitating the discharge of high-pressure gas, and the discharged gas has a lower temperature, which will not cause installation hazards and environmental pollution.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pulverized coal combustion steam boiler, comprising a boiler body (1), characterized in that: Two groups of burners (2) are evenly arranged on the lower side wall of the boiler body (1) from left to right, and two water storage chambers (3) are arranged on the upper surface of the burner (2) corresponding to the boiler body (1) from left to right. A smoke exhaust chamber (4) is arranged near the left side of the boiler body (1), and a smoke exhaust pipe (5) is installed on the upper surface of the boiler body (1) corresponding to the smoke exhaust chamber (4). A slag discharge mechanism (6) is arranged near the left and right positions of the middle part of the lower surface of the boiler body (1), and a partition mechanism (7) is installed between the front and rear of the boiler body (1). A branch pipe (8) is installed on the upper surface of the boiler body (1) corresponding to the water storage chamber (3), and an exhaust pipe (9) is fixedly installed on the upper surface of the branch pipe (8). A protective mechanism (10) is arranged on the exhaust pipe (9), and the lower surface of the protective mechanism (10) is connected to the cooling mechanism (11).

2. A pulverized coal combustion steam boiler according to claim 1, characterized in that: A filter assembly (12) is arranged in the smoke exhaust chamber (4).

3. A pulverized coal combustion steam boiler according to claim 1, characterized in that: The slag discharge mechanism (6) comprises a slag discharge pipe (601) and a sealing cover (602); the slag discharge pipe (601) is fixedly mounted on the lower surface of the boiler body (1); and the sealing cover (602) is threadedly mounted on the lower surface of the slag discharge pipe (601).

4. A pulverized coal combustion steam boiler according to claim 1, characterized in that: The partition mechanism (7) comprises an electric linear module (701) and a partition plate (702); the electric linear module (701) is mounted on the front and rear side walls of the boiler body (1); and the partition plate (702) is fixedly mounted between the front and rear slides of the electric linear module (701).

5. A pulverized coal combustion steam boiler according to claim 1, characterized in that: A one-way air valve (13) is fixedly mounted on each of the branch pipes (8).

6. A pulverized coal combustion steam boiler according to claim 1, characterized in that: The protection mechanism (10) comprises a rectangular box (101), an air outlet pipe (102), a bolt rod (103), a bearing assembly (104), a movable plate (105), a spring (106), a pressure plate (107) and a guide rod (108); the rectangular box (101) is fixedly mounted on the exhaust pipe (9); the air outlet pipe (102) is fixedly mounted on the upper surface of the exhaust pipe (9) corresponding to the rectangular box (101); the bolt rod (103) is threadedly mounted on the upper surface of the rectangular box (101); the movable plate (105) is mounted on the lower surface of the bolt rod (103) via the bearing assembly (104); the lower surface of the movable plate (105) is rectangular and fixedly mounted with a spring (106); the lower surface of the spring (106) is fixedly mounted with a pressure plate (107); the upper surface of the pressure plate (107) is fixedly mounted with a guide rod (108); and the guide rod (108) is movably inserted in the movable plate (105).

7. A pulverized coal combustion steam boiler according to claim 1, characterized in that: The cooling mechanism (11) comprises a cold water tank (111), a connecting pipe (112) and an air outlet head (113); the cold water tank (111) is fixedly mounted on the right side of the boiler body (1); the cold water tank (111) is connected to the rectangular box (101) via the connecting pipe (112); and the air outlet head (113) is mounted on the upper surface of the cold water tank (111).

Images