Emergency coal falling pipeline system
By adding auxiliary channel components to the electric plug-in doors of the emergency coal-falling pipeline system, the valve plate clamping problem caused by coal accumulation in the guide rail is solved, ensuring the normal operation of the electric plug-in doors and the safe discharge of raw coal.
Patent Information
- Application Number
- CN202421709961.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-18
AI Technical Summary
In the emergency coal-falling pipeline system, coal will fall into the guide rail during the opening and closing of the electric plug-in door, causing coal to accumulate in the guide rail, causing the valve plate to be stuck and unable to close normally. In severe cases, the screw rod may be bent and the valve cannot be completely closed, causing the problem of raw coal leakage.
An emergency coal-fall pipeline system is designed, including an emergency coal-fall pipe connected to the coal bin and a first electric plug-in door, and an auxiliary channel assembly is connected to the electric plug-in door to prevent jamming. The auxiliary passage assembly is connected to the end mechanism of the electric plug door, and the coal pushed into the end mechanism by the guide rail can be discharged downstream of the emergency coal drop pipe through the auxiliary passage assembly.
Through the design of auxiliary channel components, the problem of coal accumulation in the guide rail of the electric plug-in door is solved, the valve plate is blocked, the normal opening and closing of the electric plug-in door is ensured, and the leakage of raw coal is avoided.
Smart Images
Figure CN222922157U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical equipment, and more specifically to the technical field of an emergency coal dropping pipeline system. Background Art
[0002] In some coal-fired power plants, the raw coal stored in the raw coal bunker belongs to easily self-igniting coal types (such as lignite). In order to prevent the accident of self-ignition of easily self-igniting raw coal in the coal bunker from expanding, an inclined downward emergency coal dropping pipe needs to be installed in the raw coal bunker, and an electric slide gate that can respond quickly and open fully instantaneously is installed at the interface of the emergency coal dropping pipe close to the raw coal bunker to ensure that the raw coal bunker can be quickly emptied in the state of a self-ignition accident in the raw coal bunker.
[0003] The electric slide gate of the emergency coal dropping pipe is installed on the inclined downward emergency coal dropping pipe. The plane where the valve plate and the guide rail of the electric slide gate are located has an angle of about 45 degrees with the horizontal plane. As a result, during the opening and closing process of the electric slide gate, a small amount of coal will fall into the guide rail. During the opening and closing process of the electric slide gate, the coal in the guide rail will be pushed by the valve plate into the end mechanism of the valve to accumulate. After multiple openings and closings, the coal in the guide rail cannot be smoothly pushed into the end mechanism due to the space limitation of the end mechanism and can only accumulate in the guide rail, resulting in the valve plate being stuck and unable to close normally. Seriously, it will cause problems such as the screw rod connecting the valve plate and the driving motor being bent during the closing process of the valve, the valve being unable to close completely, and there being continuous leakage of raw coal in the emergency coal dropping pipe.
[0004] Ultimately, the key to solving the problem of the stuck electric slide gate is to solve the problem that the coal falling into the guide rail of the electric slide gate during the opening and closing process cannot be smoothly discharged from the inside of the electric slide gate. Summary of the Utility Model
[0005] The purpose of the utility model is to provide an emergency coal dropping pipeline system in order to solve the above technical problems.
[0006] The utility model specifically adopts the following technical solutions to achieve the above purpose:
[0007] The utility model provides an emergency coal dropping pipeline system, which includes an emergency coal dropping pipe connected to the coal bunker. A first electric slide gate is arranged on the inclined pipe section where the emergency coal dropping pipe is directly connected to the coal bunker. An auxiliary channel assembly for preventing the electric slide gate from getting stuck is connected to the electric slide gate.
[0008] Specifically, the auxiliary channel assembly is connected to the end mechanism of the first electric slide gate. The coal pushed into the end mechanism by the guide rail during the opening and closing process of the first electric slide gate can be discharged into the emergency coal dropping pipe downstream of the first electric slide gate of the emergency coal dropping pipe through this auxiliary channel assembly.
[0009] In one embodiment, the electric slide gate includes a valve body, a guide rail disposed within the valve body, a valve plate disposed on the guide rail, and a drive mechanism disposed outside the valve body to drive the valve plate to move within the guide rail to achieve opening and closing. On the outer wall of the valve body on the side away from the drive mechanism, a hollow end mechanism is provided. A part of the guide rail on the side away from the drive mechanism is located within the hollow end mechanism, and the auxiliary channel assembly is detachably connected to the hollow end mechanism.
[0010] In one embodiment, the hollow end mechanism is a square hollow pipe, and a flange is provided on the outer side of the square hollow pipe. A blind plate is detachably provided on the flange through bolts and nuts.
[0011] In one embodiment, the hollow end mechanism is a square hollow pipe, and a flange is provided on the outer side of the square hollow pipe. The auxiliary channel assembly is detachably connected to the flange on the outer side of the square hollow pipe.
[0012] In one embodiment, the auxiliary channel assembly includes a square elbow, a flange provided at one end of the square elbow, and a square-to-round reducer connected to the other end of the square elbow. The square-to-round reducer is connected to a pipeline system, and the flange of the square elbow mates with the flange of the square hollow pipe.
[0013] Specifically, for a new project, at the procurement stage, it is required that the tail mechanism of the electric slide gate be manufactured into a flange interface, that is, the flange in Figure 1 A temporary blind plate is provided as a plug for the flange during the supply stage. A set of auxiliary channel assemblies is designed synchronously, which is specifically composed of a square elbow, a square-to-round reducer, and a pipeline system. The square elbow is connected to the end flange of the electric slide gate (the flange of the square hollow pipe) through bolts and bolts. The flange size of the square elbow needs to ensure that it is exactly the same as the flange size of the square hollow pipe.
[0014] In one embodiment, the pipeline system is communicated with the emergency coal dropping pipe.
[0015] In one embodiment, the square-to-round reducer serves as a transition section connecting the square elbow and the pipeline system. Its square end is connected to the non-flange end of the square elbow by welding, and its round end is connected to the pipeline system by welding.
[0016] Specifically, the size of the square end of the square-to-round reducer is the same as the size of the non-flange end of the square elbow, and its square end is connected to the non-flange end of the square elbow by welding. The size of the round end of the square-to-round reducer is the same as the size of the pipeline system, and welding is also used for connection.
[0017] In one embodiment, the nominal diameter of the pipeline system is not less than 200 mm.
[0018] Specifically, to reduce the frictional resistance during the coal discharge process, the nominal diameter of the pipeline system is not less than 200 mm.
[0019] In one embodiment, the radius of curvature of the square elbow is 1.5 times the height of the square hollow pipe.
[0020] Specifically, the width of the square elbow is consistent with the horizontal width of the end mechanism (square hollow pipe) of the electric slide gate, and the radius of curvature of the square elbow is considered as 1.5 times the height of the end mechanism (square hollow pipe) of the electric slide gate. The pipeline system is arranged according to the actual situation on site, and it is required to be as short as possible and maintain a large downward slope (not less than 45 degrees).
[0021] In one embodiment, a second electric slide gate is provided on the pipeline system, and the second electric slide gate is installed on the vertical section of the pipeline system close to the emergency coal dropping pipe to ensure that coal slag will not fall into the guide rail of the second electric slide gate during the opening and closing of the second electric slide gate.
[0022] The beneficial effects of the present utility model are as follows:
[0023] 1. The design of the present utility model is reasonable, and it is not necessary to make large-scale modifications to the original design scheme. The designed coal collection and discharge system has a relatively simple structure and is easy to implement on site; moreover, the newly added flanged elbows, reducing pipes, and coal discharge pipes are all processed from standardized commodities, and the quality is easy to guarantee;
[0024] 2. The valves provided on the pipeline of the coal collection and discharge system are electric slide gates, and all operations can be automated. The problem of coal accumulation inside the guide rail of the electric slide gate is solved, thereby solving the problem of jamming of the electric slide gate. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.
[0026] Figure 1 It is a schematic structural diagram of the first electric slide gate of the present utility model;
[0027] Figure 2 It is a schematic structural diagram of the auxiliary passage component and the pipeline system;
[0028] Figure 3 It is Figure 2 a top view of
[0029] Figure 4 It is Figure 2 a left view of
[0030] Figure 5 is Figure 1 a partial top view of;
[0031] Figure 6 is a schematic diagram of an emergency coal dropping pipeline system;
[0032] Reference numerals: 1 - coal bunker, 2 - first electric slide gate, 3 - blind plate, 4 - bolt, 5 - nut, 6 - square elbow, 7 - square-to-round reducer, 8 - pipeline system. Specific embodiments
[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.
[0034] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.
[0035] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.
[0036] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model.
[0037] Embodiment 1
[0038] As Figures 1 to 6 shown, this embodiment provides an emergency coal dropping pipeline system, including an emergency coal dropping pipe connected to the coal bunker 1. A first electric slide gate 2 is provided on the inclined pipe section directly connected to the coal bunker 1 of the emergency coal dropping pipe, and an auxiliary channel assembly for preventing the electric slide gate from jamming is connected to the electric slide gate.
[0039] Specifically, the auxiliary channel assembly is connected to the end mechanism of the first electric slide gate. During the opening and closing process of the first electric slide gate, the coal pushed into the end mechanism by the guide rail can be discharged through the auxiliary channel assembly into the emergency coal dropping pipe downstream of the first electric slide gate of the emergency coal dropping pipe.
[0040] Embodiment 2
[0041] This embodiment is further optimized on the basis of Embodiment 1. Specifically:
[0042] The electric slide gate includes a valve body, a guide rail arranged inside the valve body, a valve plate arranged on the guide rail, and a driving mechanism arranged outside the valve body to drive the valve plate to move inside the guide rail to achieve opening and closing. A hollow end mechanism is arranged on the outer side wall of the valve body away from the driving mechanism. Part of the guide rail away from the driving mechanism is located inside the hollow end mechanism. The auxiliary channel assembly is detachably connected to the hollow end mechanism.
[0043] The hollow end mechanism is a square hollow pipe. A flange is arranged on the outer side of the square hollow pipe. A blind plate 3 is detachably arranged on the flange through bolts 4 and nuts 5.
[0044] The hollow end mechanism is a square hollow pipe. A flange is arranged on the outer side of the square hollow pipe. The auxiliary channel assembly is detachably connected to the flange on the outer side of the square hollow pipe.
[0045] The auxiliary channel assembly includes a square elbow 6, a flange arranged at one end of the square elbow 6, and a square-to-round reducer 7 connected to the other end of the square elbow 6. The square-to-round reducer 7 is connected to a pipeline system 8. The flange of the square elbow 6 cooperates with the flange of the square hollow pipe.
[0046] Specifically, for a new project, during the procurement stage, it is required that the tail mechanism of the electric slide gate be manufactured into a flange interface, that is, the flange in Figure 2 During the supply stage, the flange is equipped with a temporary blind plate 3 as a plug. Synchronously design a set of auxiliary channel assemblies, specifically composed of a square elbow 6, a square-to-round reducer 7, and a pipeline system 8. The square elbow 6 is connected to the end flange of the electric slide gate (the flange of the square hollow pipe) through bolts 4 and bolts 4. The flange size of the square elbow 6 needs to ensure that it is exactly the same as the flange size of the square hollow pipe.
[0047] Embodiment 3
[0048] This embodiment is further optimized on the basis of Embodiment 2. Specifically:
[0049] The pipeline system 8 is communicated with the emergency coal dropping pipe.
[0050] The square-to-round reducer 7 serves as a transition section connecting the square elbow 6 and the pipeline system 8. Its square end is connected to the non-flange end of the square elbow 6 by welding, and its round end is connected to the pipeline system 8 by welding.
[0051] Specifically, the size of the square end of the square-to-round reducer 7 is consistent with the size of the non-flange end of the square elbow 6, and its square end is connected to the non-flange end of the square elbow 6 by welding. The size of the round end of the square-to-round reducer 7 is consistent with the size of the pipeline system 8, and welding is also used for connection.
[0052] Embodiment 4
[0053] This embodiment is further optimized based on Embodiment 3. Specifically:
[0054] The nominal diameter of the pipeline system 8 is not less than 200 mm.
[0055] Specifically, to reduce the frictional resistance during the coal discharge process, the nominal diameter of the pipeline system 8 is not less than 200 mm.
[0056] The radius of curvature of the square elbow 6 is 1.5 times the height of the square hollow pipe.
[0057] Specifically, the width of the square elbow 6 is consistent with the horizontal width of the end mechanism of the electric slide gate (square hollow pipe), and the radius of curvature of the square elbow 6 is considered as 1.5 times the height of the end mechanism of the electric slide gate (square hollow pipe). The pipeline system 8 is arranged according to the actual situation on site, and it is required to be as short as possible and maintain a relatively large downward slope (not less than 45 degrees).
[0058] A second electric slide gate is provided on the pipeline system 8. The second electric slide gate is installed on the vertical section of the pipeline system 8 close to the emergency coal dropping pipe to ensure that coal slag will not fall into the guide rail of the second electric slide gate during the opening and closing of the second electric slide gate.
[0059] Embodiment 5
[0060] Retrofit the first electric slide gate of the emergency coal dropping pipe that has been put into operation. The specific operation method is similar to that of Embodiment 4. First, it is necessary to transform the blind plate 3 with an exhaust hole at the tail mechanism of the installed first electric slide gate into a connecting flange, that is, the flange in Embodiment 4. Since the tail mechanism of the first electric slide gate is a non-pressure-bearing component, the on-site retrofit difficulty is very small.
Claims
1. An emergency coal dropping pipeline system, characterized in that: It comprises an emergency coal dropping pipe connected to the coal bunker (1), a first electric gate door (2) being arranged on the inclined pipe section directly connected to the coal bunker (1), and an auxiliary channel component for preventing the electric gate door from getting stuck being connected to the electric gate door; The electric gate door includes a valve body, a guide rail arranged in the valve body, a valve plate arranged on the guide rail, and a driving mechanism arranged on the outer side of the valve body to drive the valve plate to move in the guide rail to achieve opening and closing. A hollow end mechanism is arranged on the outer side wall of the valve body away from the driving mechanism, a part of the guide rail away from the driving mechanism is located in the hollow end mechanism, and the auxiliary channel assembly is detachably connected to the hollow end mechanism.
2. The emergency coal dropping pipeline system according to claim 1, characterized in that: The hollow end mechanism is a square hollow tube, a flange is arranged on the outside of the square hollow tube, and a blind plate (3) is detachably arranged on the flange via bolts (4) and nuts (5).
3. The emergency coal dropping pipeline system according to claim 1, characterized in that: The hollow end mechanism is a square hollow tube, a flange is arranged on the outside of the square hollow tube, and the auxiliary channel component is detachably connected to the flange on the outside of the square hollow tube.
4. The emergency coal dropping pipeline system according to claim 3, characterized in that: The auxiliary channel component comprises a square elbow (6), a flange arranged at one end of the square elbow (6), and a square-to-round reducer (7) connected to the other end of the square elbow (6); the square-to-round reducer (7) is connected to the pipeline system (8); and the flange of the square elbow (6) cooperates with the flange of the square hollow pipe.
5. The emergency coal dropping pipeline system according to claim 4, characterized in that: The pipeline system (8) is in communication with the emergency coal dropping pipe.
6. The emergency coal dropping pipeline system according to claim 4, characterized in that: The square-to-round reducer (7) serves as a transition section connecting the square elbow (6) and the pipeline system (8), wherein the square end is connected to the non-flange end of the square elbow (6) by welding, and the round end is connected to the pipeline system (8) by welding.
7. The emergency coal dropping pipeline system according to claim 4, characterized in that: The nominal diameter of the pipeline system (8) is not less than 200 mm.
8. The emergency coal dropping pipeline system according to claim 4, characterized in that: The curvature radius of the square elbow (6) is 1.5 times the height of the square hollow tube.
9. The emergency coal dropping pipeline system according to claim 5, characterized in that: The pipeline system (8) is provided with a second electric gate, which is installed on a vertical section of the pipeline system (8) close to the emergency coal drop pipe to ensure that coal slag does not fall into the guide rail of the second electric gate during opening and closing of the second electric gate.