An overload protection device for ash hopper of coal-fired power station

Abstract

The present invention discloses a coal-fired power station ash hopper overload protection device, including a dust collector body, fastening bolts and an alarm switch, a telescopic spring is connected between the inner bottom surface of the lifting tube and the upper surface of the fixed rod, the inner surface of the main body bracket is provided with a fixed track, the outer surface of the fixed track is provided with a sliding plate, the bottom surface of the sliding plate is provided with a support frame, the support frame, the sliding plate and the fixed track are all connected with fastening bolts, and the upper surface of the sliding plate is provided with an alarm switch. The coal-fired power station ash hopper overload protection device can timely adjust the operation mode by displaying weighing data during operation, which can prevent high material level alarms, and the operating environment is better, and its principle defects are not affected by the harsh internal environment. At the same time, the steel structure of the bracket that separates the dust collector body from the hopper has a reinforcing effect, which effectively prevents the safety risk of dust collector collapse. At the same time, the weighing measurement has high accuracy and no erroneous operation.

Description

Technical Field

[0001] The invention relates to the technical field of ash hoppers in power plants, and in particular to an ash hopper overload protection device for a coal-fired power plant. Background Art

[0002] A thermal power plant is a plant that uses combustibles (such as coal) as fuel to produce electricity. Its basic production process is: when the fuel is burned, it heats water to generate steam, converting the chemical energy of the fuel into thermal energy. The steam pressure drives the turbine to rotate, converting the thermal energy into mechanical energy. The turbine then drives the generator to rotate, converting the mechanical energy into electrical energy.

[0003] The prime mover is usually a steam engine or gas turbine, and in some smaller power stations, an internal combustion engine may also be used. They all generate electricity by using the pressure drop during the process of high-temperature, high-pressure steam or gas passing through a turbine to become low-pressure air or condensed water.

[0004] The existing level meters on the market measure the material level and are installed on the electrostatic precipitator hopper. The protection device is single and the internal environment is harsh. If the level meter fails, it is easy to cause the material level to be too high and cause the risk of collapse. Therefore, we propose a coal-fired power plant ash hopper overload protection device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an ash hopper overload protection device for a coal-fired power plant to solve the problem raised in the above background technology that the existing level meters on the market for measuring the material level are installed on the electrostatic precipitator hopper, the protection device is single, and the internal environment is harsh. If the level meter fails, it is easy to cause the material level to be too high and cause the risk of collapse.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a coal-fired power plant ash hopper overload protection device, comprising a dust collector body, a fastening bolt and an alarm switch, a feed port is provided on the left side of the dust collector body, a discharge port is provided on the right side of the dust collector body, a main body bracket is provided on the bottom surface of the dust collector body, a soft connection is provided on the bottom surface of the dust collector body, a hopper is connected to the bottom of the soft connection, connecting plates are provided on both sides of the outer surface of the hopper, an outlet is provided at the bottom of the hopper, auxiliary brackets are provided on both sides of the hopper, a fixing rod is provided on the upper surface of the auxiliary bracket, a lifting pipe is provided on the outer surface of the fixing rod, and the lifting pipe is connected to the bottom surface of the connecting plate. A telescopic spring is connected between the inner bottom surface of the lifting tube and the upper surface of the fixed rod, a fixed track is provided on the inner surface of the main bracket, a sliding plate is provided on the outer surface of the fixed track, a support frame is provided on the bottom surface of the sliding plate, fastening bolts are connected between the support frame, the sliding plate and the fixed track, an alarm switch is provided on the upper surface of the sliding plate, the auxiliary brackets are symmetrically arranged on both sides of the hopper, the connecting plates are symmetrically arranged on both sides of the outer surface of the hopper, and the connecting plates and the hopper are fixedly connected, the fixed track and the inner surface of the main bracket are fixedly connected, the support frame and the sliding plate are fixedly connected, and the sliding plate, the support frame and the fixed track are all slidably connected.

[0007] Preferably, the main body bracket is symmetrically arranged on the bottom surface of the dust collector body, and the main body bracket and the dust collector body are fixedly connected, the size of the bottom surface of the flexible connection is equal to the size of the top of the hopper, and the flexible connection and the hopper are fixedly connected.

[0008] Preferably, the fixing rod is arranged at a middle position of the upper surface of the auxiliary bracket, and the fixing rod and the auxiliary bracket are fixedly connected.

[0009] Preferably, the inner diameter of the lifting tube is equal to the outer diameter of the fixing rod, and the lifting tube forms an up and down lifting structure on the outer surface of the fixing rod through a telescopic spring.

[0010] Compared with the prior art, the beneficial effects of the present invention are: the ash hopper overload protection device of the coal-fired power plant can timely adjust the operating mode by displaying the weighing data during operation, which can prevent high material level alarms, and the operating environment is better, and its principle defects are not affected by the harsh internal environment. At the same time, the steel structure of the bracket that separates the dust collector body from the hopper has a reinforcement effect, which effectively prevents the safety risk of dust collector collapse. At the same time, the weighing measurement is highly accurate and there is no error in operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0012] Figure 2 For the present invention Figure 1 Schematic diagram of the structure at A in the middle;

[0013] Figure 3 It is a schematic diagram of the front structure of the sliding plate of the present invention.

[0014] In the figure: 1. Dust collector body; 2. Feed inlet; 3. Discharge outlet; 4. Main body bracket; 5. Flexible connection; 6. Hopper; 7. Connecting plate; 8. Outlet; 9. Auxiliary bracket; 10. Fixed rod; 11. Lifting tube; 12. Telescopic spring; 13. Fixed track; 14. Sliding plate; 15. Support frame; 16. Fastening bolts; 17. Alarm switch. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1-3The present invention provides a technical solution: a coal-fired power plant ash hopper overload protection device, comprising a dust collector body 1, a feed port 2, a discharge port 3, a main body bracket 4, a flexible connection 5, a hopper 6, a connecting plate 7, an outlet 8, an auxiliary bracket 9, a fixing rod 10, a lifting tube 11, a telescopic spring 12, a fixing rail 13, a sliding plate 14, a support frame 15, a fastening bolt 16 and an alarm switch 17. The left side of the dust collector body 1 is provided with a feed port 2, the right side of the dust collector body 1 is provided with a discharge port 3, the bottom surface of the dust collector body 1 is provided with a main body bracket 4, the bottom surface of the dust collector body 1 is provided with a flexible connection 5, the bottom of the flexible connection 5 is connected with the hopper 6, the outer surface of the hopper 6 is provided with connecting plates 7 on both sides, the bottom of the hopper 6 is provided with an outlet 8, the hopper 6 is provided with auxiliary brackets 9 on both sides, the upper surface of the auxiliary bracket 9 is provided with a fixing rod 10, the outer surface of the fixing rod 10 is provided with a lifting tube 11, and The lifting tube 11 is connected to the bottom surface of the connecting plate 7, a telescopic spring 12 is connected between the inner bottom surface of the lifting tube 11 and the upper surface of the fixed rod 10, a fixed track 13 is provided on the inner surface of the main bracket 4, a sliding plate 14 is provided on the outer surface of the fixed track 13, a support frame 15 is provided on the bottom surface of the sliding plate 14, fastening bolts 16 are connected between the support frame 15, the sliding plate 14 and the fixed track 13, an alarm switch 17 is provided on the upper surface of the sliding plate 14, the auxiliary bracket 9 is symmetrically arranged on both sides of the hopper 6, the connecting plate 7 is symmetrically arranged on both sides of the outer surface of the hopper 6, and the connecting plate 7 is fixedly connected to the hopper 6, the fixed track 13 and the inner surface of the main bracket 4 are fixedly connected, the support frame 15 and the sliding plate 14 are fixedly connected, and the sliding plate 14, the support frame 15 and the fixed track 13 are all slidably connected, so that the position of the alarm switch 17 can be adjusted.

[0017] The main body bracket 4 is symmetrically arranged on the bottom surface of the dust collector body 1, and the main body bracket 4 is fixedly connected to the dust collector body 1. The size of the bottom surface of the flexible connection 5 is equal to the size of the top of the hopper 6, and the flexible connection 5 is fixedly connected to the hopper 6 to avoid leakage.

[0018] The fixing rod 10 is arranged at the middle position of the upper surface of the auxiliary bracket 9 , and the fixing rod 10 and the auxiliary bracket 9 are fixedly connected.

[0019] The inner diameter of the lifting tube 11 is equal to the outer diameter of the fixing rod 10 , and the lifting tube 11 forms an up and down lifting structure on the outer surface of the fixing rod 10 through the telescopic spring 12 , so that the lifting tube 11 can trigger the alarm switch 17 by lifting.

[0020] Working principle: When using the ash hopper overload protection device of the coal-fired power plant, first, assemble the parts required for the device. When ash enters the hopper 6, the hopper 6 moves downward. The hopper 6 drives the lifting tube 11 through the connecting plate 7 to squeeze the telescopic spring 12 downward, so that the lifting tube 11 moves downward on the outer surface of the fixed rod 10. The position of the support frame 15 and the sliding plate 14 is fixed by tightening the bolts 16. When the lifting tube 11 moves downward along the fixed rod 10, the distance between the plate on the outer surface of the lifting tube 11 and the alarm switch 17 becomes closer and closer until the position of the hopper 6 triggers the alarm switch 17, and then the entire device stops working and the inside of the hopper 6 is cleaned. The above is the working process of the device, and the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0021] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A coal-fired power plant ash hopper overload protection device, comprising a dust collector body (1), a fastening bolt (16) and an alarm switch (17), characterized in that: The dust collector body (1) is provided with a feed inlet (2) on the left side, and a discharge outlet (3) on the right side. The dust collector body (1) is provided with a main body bracket (4) on the bottom surface. The dust collector body (1) is provided with a soft connection (5) on the bottom surface. The bottom of the soft connection (5) is connected to a hopper (6). Connecting plates (7) are provided on both sides of the outer surface of the hopper (6). An outlet (8) is provided at the bottom of the hopper (6). Auxiliary brackets (9) are provided on both sides of the hopper (6). A fixing rod (10) is provided on the upper surface of the auxiliary bracket (9). A lifting pipe (11) is provided on the outer surface of the fixing rod (10), and the lifting pipe (11) is connected to the bottom surface of the connecting plate (7). A telescopic spring (12) is connected between the inner bottom surface of the lifting pipe (11) and the upper surface of the fixing rod (10). The inner surface of the main frame (4) is provided with a fixed track (13), the outer surface of the fixed track (13) is provided with a sliding plate (14), the bottom surface of the sliding plate (14) is provided with a support frame (15), the support frame (15), the sliding plate (14) and the fixed track (13) are all connected with fastening bolts (16), the upper surface of the sliding plate (14) is provided with an alarm switch (17), the auxiliary bracket (9) is symmetrically arranged on both sides of the hopper (6), the connecting plates (7) are symmetrically arranged on both sides of the outer surface of the hopper (6), and the connecting plates (7) and the hopper (6) are fixedly connected, the fixed track (13) and the inner surface of the main frame (4) are fixedly connected, the support frame (15) and the sliding plate (14) are fixedly connected, and the sliding plate (14), the support frame (15) and the fixed track (13) are all slidably connected.

2. The ash hopper overload protection device for a coal-fired power plant according to claim 1, characterized in that: The main body bracket (4) is symmetrically arranged on the bottom surface of the dust collector body (1), and the main body bracket (4) and the dust collector body (1) are fixedly connected. The size of the bottom surface of the flexible connection (5) is equal to the size of the top of the hopper (6), and the flexible connection (5) and the hopper (6) are fixedly connected.

3. The ash hopper overload protection device for a coal-fired power plant according to claim 1, characterized in that: The fixing rod (10) is arranged at a middle position on the upper surface of the auxiliary bracket (9), and the fixing rod (10) and the auxiliary bracket (9) are fixedly connected.

4. The ash hopper overload protection device for a coal-fired power plant according to claim 1, characterized in that: The inner diameter of the lifting tube (11) is equal to the outer diameter of the fixing rod (10), and the lifting tube (11) forms an up and down lifting structure on the outer surface of the fixing rod (10) through a telescopic spring (12).

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