Waste heat boiler drum structure of industrial furnace

Abstract

The utility model discloses a waste heat boiler drum structure of an industrial furnace, which relates to the technical field of industrial furnaces and comprises a shell, a water adding pipe is fixedly connected to one side of the shell, a steam pipe is fixedly connected to one side, far away from the water adding pipe, of the shell, and a water passing bin is fixedly connected to one side of the water adding pipe. A water guide pipe is fixedly connected to the side, away from the water adding pipe, of the water passing bin, a water baffle is rotatably connected to the interior of the water passing bin, a limiting bin is fixedly connected to one side of the water passing bin, a limiting plate is rotatably connected to the interior of the limiting bin, and a fixing block is fixedly connected to the bottom end of the limiting bin. By the adoption of the structure, the abutting blocks are installed on the two sides of the tip of the floating rod and connected with the springs, so that the abutting blocks make elastic contact with the limiting plate, direct hard friction between the abutting blocks and the limiting plate is avoided, abrasion is reduced, the service life is prolonged, the steam drum water level adjusting function is durable and reliable, and normal work of a waste heat boiler is prevented from being affected by out-of-control water level.

Description

Technical Field

[0001] This utility model belongs to the field of industrial furnace technology, and specifically relates to a waste heat boiler steam drum structure for an industrial furnace. Background Technology

[0002] In industrial production, a large amount of waste heat generated by industrial furnaces is recovered and utilized through waste heat boilers. As a key component of waste heat boilers, the steam drum plays an important role in steam-water separation, storage of boiler water and saturated steam.

[0003] For example, Chinese patent CN221611354U discloses a boiler drum structure, including an outer shell. Two legs are fixedly connected to the bottom of the outer shell. A steam pipe is connected to the top of the outer shell. A drain pipe is connected to the bottom of the outer shell. A steam-water separator is symmetrically arranged above the inner cavity of the outer shell. A steam-water pipe is connected to one side of the steam-water separator. A steam outlet pipe is connected to the other side of the steam-water separator. A downcomer is connected to the bottom of the steam-water separator. Louvers are installed at the top of the inner cavity of the outer shell. A water inlet pipe is connected to the outside of the outer shell. A water level control component is installed at one end of the water inlet pipe inside the outer shell. Four lifting rings are fixedly connected to the top of the outer shell.

[0004] Although the aforementioned patent addresses the problem that the sealing plug of the steam drum is located inside the water inlet pipe and directly bears the water pressure, making it difficult for the buoyancy of the float to move the sealing plug upward when the water pressure in the water inlet pipe is too high, thus preventing the water inlet pipe from closing and stopping water supply, the structure still has some defects that need improvement. The limiting rod at the tip of the float rod directly and rigidly contacts the limiting plate, which will cause significant wear. Over time, it will be difficult to smoothly lock the limiting plate, thus causing the water level control function to fail. Furthermore, operators cannot visually determine whether the limiting rod is accurately locked with the limiting plate. When there is inadequate locking or loosening due to wear, it cannot be detected and dealt with in time, which may lead to abnormal water level control. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a waste heat boiler steam drum structure for industrial furnaces to solve the problems mentioned in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A waste heat boiler steam drum structure for an industrial furnace includes an outer shell. A water inlet pipe is fixedly connected to one side of the outer shell, and a steam pipe is fixedly connected to the side of the outer shell away from the water inlet pipe. A water passage chamber is fixedly connected to one side of the water inlet pipe, and a water guide pipe is fixedly connected to the side of the water passage chamber away from the water inlet pipe. A baffle plate is rotatably connected inside the water passage chamber. A limiting chamber is fixedly connected to one side of the water passage chamber, and a limiting plate is rotatably connected inside the limiting chamber. A fixing block is fixedly connected to the bottom of the limiting chamber. A floating component is provided on one side of the fixing block, and a protective mechanism is provided on one side of the floating component. A drain pipe is fixedly connected to the bottom of the outer shell.

[0008] As a preferred technical solution, the floating component includes a float, which is slidably connected inside the fixed block. The protective mechanism is provided on the float, and a float cylinder is slidably connected to the outer surface of the float. An upper baffle is fixedly connected to the top of the float, and a lower baffle is fixedly connected to the bottom of the float.

[0009] As a preferred technical solution, the fixed block has grooves on both sides, a slider is slidably connected inside the groove, one side of the slider is fixedly connected to one side of the float, a slide rod is fixedly connected inside the groove, and the slider is slidably connected to the slide rod.

[0010] As a preferred technical solution, the protective mechanism includes abutment blocks, which are disposed on both sides of the float extending into the limiting chamber. A first spring is fixedly connected between the abutment blocks and the float, and a warning component is provided on one side of the float.

[0011] As a preferred technical solution, the prompting component includes a movable rod, which is fixedly connected to the side of the abutment block near the first spring. Fixed cylinders are fixedly connected to both sides of the float rod, and grooves are formed inside the fixed cylinders. A touch switch is fixedly connected inside the grooves, and a touch block is movably connected to one side of the touch switch. One side of the touch block is fixedly connected to one side of the movable rod. A second spring is fixedly connected to the movable rod on one side of the abutment block, and one side of the second spring is fixedly connected to one side of the groove.

[0012] As a preferred technical solution, the float has assembly slots on both sides, and the abutment block is fixedly connected in the assembly slot by a first spring.

[0013] In summary, the present invention has the following main advantages:

[0014] First, this utility model installs contact blocks on both sides of the tip of the float rod, and the contact blocks are connected to springs, so that the contact blocks and the limiting plate make elastic contact, avoiding direct hard friction between the two, reducing wear, improving service life, making the steam drum water level regulation function durable and reliable, and avoiding the impact of water level loss on the normal operation of the waste heat boiler.

[0015] Secondly, by setting up a prompting component, the operator can quickly determine the clamping status of the contact block and the limit plate without a complicated detection process. When a clamping abnormality occurs, it can be detected and dealt with immediately, avoiding water level control abnormalities caused by misjudgment or delayed handling, and improving equipment management efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the inner wall structure of one side of the outer shell of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the water-passing chamber of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the limiting chamber of this utility model;

[0020] Figure 5 This is a schematic diagram of the upper structure of the float of this utility model;

[0021] Figure 6 This is a schematic diagram of the separate structure of the movable rod and the fixed cylinder of this utility model.

[0022] Reference numerals: 1. Outer shell; 2. Water inlet pipe; 3. Drain pipe; 4. Steam pipe; 5. Water passage chamber; 6. Water guide pipe; 7. Water baffle; 8. Limiting chamber; 9. Limiting plate; 10. Fixing block; 11. Floating component; 111. Float rod; 112. Float cylinder; 113. Upper baffle; 114. Lower baffle; 12. Slide groove; 13. Sliding block; 14. Sliding rod; 15. Protective mechanism; 151. Abutment block; 152. Second spring; 153. Indication component; 1531. Moving rod; 1532. Fixing cylinder; 1533. Contact block; 1534. Contact switch; 1535. Groove; 16. Assembly slot. Detailed Implementation

[0023] Example

[0024] refer to Figures 1 to 6The waste heat boiler steam drum structure of an industrial furnace described in this embodiment includes an outer shell 1. A water inlet pipe 2 is fixedly connected to one side of the outer shell 1. A steam pipe 4 is fixedly connected to the side of the outer shell 1 away from the water inlet pipe 2. A water passage chamber 5 is fixedly connected to one side of the water inlet pipe 2. A water guide pipe 6 is fixedly connected to the side of the water passage chamber 5 away from the water inlet pipe 2. A baffle plate 7 is rotatably connected inside the water passage chamber 5. A limiting chamber 8 is fixedly connected to one side of the water passage chamber 5. A limiting plate 9 is rotatably connected inside the limiting chamber 8. A fixing block 10 is fixedly connected to the bottom of the chamber 8. A floating component 11 is provided on one side of the fixing block 10. A protective mechanism 15 is provided on one side of the floating component 11. A drain pipe 3 is fixedly connected to the bottom of the outer shell 1. It should be noted that a steam-water separator and other structures are also provided inside the outer shell 1 on the opposite side of the floating component 11. For details, please refer to the Chinese patent application number CN202322704592.2 for the structure of a boiler steam drum. The internal structure of this device is the same as that of the referenced device. Since it is prior art, it will not be described in detail here.

[0025] refer to Figure 2-3 The floating assembly 11 includes a float 111, which is slidably connected inside the fixed block 10. The protective mechanism 15 is provided on the float 111. A float cylinder 112 is slidably connected to the outer surface of the float 111. An upper baffle 113 is fixedly connected to the top end of the float 111, and a lower baffle 114 is fixedly connected to the bottom end of the float 111. By setting the floating assembly 11, when the water level drops, the float cylinder 112 moves down with the water level, causing the float 111 to slide down. The downward movement of the float 111 releases the limiting plate 9 from restricting the water baffle 7, and water flows into the outer shell 1. When the water level rises, the float cylinder 112 moves up, and the float 111 restricts the limiting plate 9 through the protective mechanism 15, thereby restricting the rotation of the water baffle 7.

[0026] refer to Figure 4 The fixed block 10 has sliding grooves 12 on both sides. A slider 13 is slidably connected inside the sliding groove 12. One side of the slider 13 is fixedly connected to one side of the float 111. A slide rod 14 is fixedly connected inside the sliding groove 12. The slider 13 is slidably connected to the slide rod 14. When the float 111 slides, the slider 13 moves along the slide rod 14 inside the sliding groove 12. The slide rod 14 provides guidance to ensure that the float 111 moves in a straight line, reduce the swaying of the float 111, and avoid misalignment with the limiting plate 9.

[0027] refer to Figure 5The protective mechanism 15 includes abutment blocks 151, which are located on both sides of the float 111 extending into the limiting chamber 8. A first spring is fixedly connected between the abutment blocks 151 and the float 111. A warning component 153 is provided on one side of the float 111. By setting the abutment blocks 151 and the first spring, when the float 111 rises, the abutment blocks 151 first contact the limiting plate 9, compressing the first spring. The spring deformation absorbs energy, reducing hard collisions and preventing the limiting rod from directly contacting the limiting plate 9, thus significantly reducing wear.

[0028] refer to Figure 6 The prompting component 153 includes a movable rod 1531, which is fixedly connected to the side of the abutment block 151 near the first spring. Fixed cylinders 1532 are fixedly connected to both sides of the float rod 111. A groove 1535 is formed inside the fixed cylinder 1532, and a touch switch 1534 is fixedly connected inside the groove 1535. A touch block 1533 is movably connected to one side of the touch switch 1534. One side of the touch block 1533 is fixedly connected to one side of the movable rod 1531. A second spring 152 is fixedly connected to the movable rod 1531 on the side of the abutment block 151. One side of 152 is fixedly connected to the inside side of the groove 1535; by setting the prompt component 153, when the abutment block 151 is pressed, the moving rod 1531 pushes the contact block 1533 to contact the touch switch 1534. The touch switch 1534 is a micro switch, and the mechanical contact trigger signal is direct and reliable, which is suitable for real-time feedback of the limit status. The touch switch 1534 transmits the electrical signal to the external control system to prompt the limit status and intuitively display the limit status. The operator can quickly judge whether it is locked correctly, and promptly find problems such as incomplete locking or loosening, and prevent abnormal water level control. During this process, the second spring 152 also deforms, which facilitates the subsequent restoration of the position of the abutment block 151.

[0029] refer to Figure 5 The float 111 has assembly slots 16 on both sides, and the abutment block 151 is fixedly connected in the assembly slot 16 by the first spring; the assembly slot 16 is provided for installing the abutment block 151 and the first spring.

[0030] Operating principle and advantages: When the water level is below the set threshold, the float 112 descends with the water level due to reduced buoyancy, causing the float rod 111 to slide downwards along the groove 12 of the fixed block 10. The slider 13 moves downwards synchronously on the slide rod 14, ensuring the vertical movement of the float rod 111. The float rod 111 slides down to the lower baffle 114 and contacts the float 112, continuing to pull the float rod 111 downwards. The limiting plate 9 rotates with the float rod 111, releasing the restriction on the baffle plate 7. The baffle plate 7 rotates under the impact of the water flow from the water inlet pipe 2. The water tank 5 is connected to the water guide pipe 6, and the water flows into the outer shell 1 through the water guide pipe 6. The water level begins to rise. When the water level rises back to the set threshold, the float 112 slides upwards due to increased buoyancy, and the slider 13 moves upwards along the slide rod 14. The upper baffle 113 at the top of the float rod 111 pushes the float 112 to its highest position. As the float 111 continues to move upward, the contact block 151 contacts the limiting plate 9. The contact block 151 is compressed by the first spring, and the spring deformation absorbs the impact force, preventing the float 111 from colliding hard with the limiting plate 9. The float 111 pushes the limiting plate 9 to rotate through the contact block 151, limiting the water baffle 7 to reset and gradually closing the water passage 5. When the contact block 151 is compressed, the moving rod 1531 moves into the fixed cylinder 1532, pushing the contact block 1533 to trigger the micro switch. The switch sends an electrical signal to the control system, indicating that the limit clamping is complete. If the gap between the limiting plate 9 and the float 111 is too large due to wear, the contact block 151 is not compressed enough. The second spring 152 pushes the moving rod 1531 to reset, the contact block 1533 separates from the micro switch, the signal is interrupted, and the operator is prompted to perform maintenance.

Claims

1. A waste heat boiler drum structure for an industrial furnace, comprising an outer shell (1), characterized in that: A water inlet pipe (2) is fixedly connected to one side of the outer shell (1). A steam pipe (4) is fixedly connected to the side of the outer shell (1) away from the water inlet pipe (2). A water passage chamber (5) is fixedly connected to one side of the water inlet pipe (2). A water guide pipe (6) is fixedly connected to the side of the water passage chamber (5) away from the water inlet pipe (2). A baffle plate (7) is rotatably connected inside the water passage chamber (5). A limiting chamber (8) is fixedly connected to one side of the water passage chamber (5). A limiting plate (9) is rotatably connected inside the limiting chamber (8). A fixing block (10) is fixedly connected to the bottom end of the limiting chamber (8). A floating component (11) is provided on one side of the fixing block (10). A protective mechanism (15) is provided on one side of the floating component (11). A drain pipe (3) is fixedly connected to the bottom end of the outer shell (1).

2. The waste heat boiler drum structure for an industrial furnace according to claim 1, characterized in that: The floating assembly (11) includes a float (111) which is slidably connected inside the fixed block (10). The protective mechanism (15) is provided on the float (111), and a float (112) is slidably connected to the outer surface of the float (111).

3. The waste heat boiler drum structure for an industrial furnace according to claim 2, characterized in that: The top end of the float (111) is fixedly connected to an upper baffle (113), and the bottom end of the float (111) is fixedly connected to a lower baffle (114).

4. The waste heat boiler steam drum structure for an industrial furnace according to claim 2, characterized in that: The fixed block (10) has a sliding groove (12) on both sides. A slider (13) is slidably connected inside the sliding groove (12). One side of the slider (13) is fixedly connected to one side of the float (111). A slide rod (14) is fixedly connected inside the sliding groove (12). The slider (13) is slidably connected to the slide rod (14).

5. The waste heat boiler steam drum structure for an industrial furnace according to claim 1, characterized in that: The protective mechanism (15) includes a stop block (151), which is located on both sides of the float (111) extending into the limiting chamber (8). A first spring is fixedly connected between the stop block (151) and the float (111), and a prompting component (153) is provided on one side of the float (111).

6. The waste heat boiler drum structure for an industrial furnace according to claim 5, characterized in that: The prompting component (153) includes a movable rod (1531), which is fixedly connected to the side of the abutment block (151) near the first spring. Both sides of the float (111) are fixedly connected to a fixed cylinder (1532). The fixed cylinder (1532) has a groove (1535) inside. A touch switch (1534) is fixedly connected inside the groove (1535). A touch block (1533) is movably connected to one side of the touch switch (1534). One side of the touch block (1533) is fixedly connected to one side of the movable rod (1531). A second spring (152) is fixedly connected to one side of the movable rod (1531) on the side of the abutment block (151). One side of the second spring (152) is fixedly connected to one side of the groove (1535).

7. The waste heat boiler drum structure of an industrial furnace according to claim 6, characterized in that: The float (111) has assembly slots (16) on both sides, and the abutment block (151) is fixedly connected in the assembly slot (16) by a first spring.

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