Automatic anti-clogging device of denitration ash conveying system

Abstract

The utility model discloses a kind of automatic anti-dust blocking devices of denitration ash conveying system, a kind of automatic anti-dust blocking devices of denitration ash conveying system, including ash conveying pipe body, the ash conveying pipe body top is provided with first hopper, second hopper and third hopper, ash conveying pipe body and first hopper, second hopper and third hopper between are all provided with warehouse pump, second pressure detection meter and third pressure detection meter are equipped on the warehouse pump of first hopper and second hopper lower end, ash conveying pipe body side is provided with air compressor pump, air compressor pump is connected with shunt pipe, total valve is provided on shunt pipe, shunt pipe side is connected with third connecting pipe, second connecting pipe, first connecting pipe and fourth connecting pipe, fourth connecting pipe, third connecting pipe, second connecting pipe and first connecting pipe other end are all connected with ash conveying pipe body.This device can realize the automatic dredging of ash conveying pipe body, avoid ash conveying pipe body blockage, guarantee the ash conveying efficiency of ash conveying pipe body.

Description

Technical Field

[0001] This utility model relates to the technical field of denitrification and ash conveying systems, specifically to an automatic anti-clogging device for denitrification and ash conveying systems. Background Technology

[0002] A denitrification and ash conveying system typically refers to a system used in thermal power plants or other industrial production processes to treat nitrogen oxides, converting them into nitrogen gas and water. This system is part of environmental protection measures aimed at reducing the emission of air pollutants.

[0003] Dust collection hoppers are typically installed at the bottom of the reactor in denitrification equipment. However, the amount of dust collected in the hopper is limited, so it needs to be discharged in a timely manner. Dust discharge pipes can facilitate dust discharge, but they are prone to clogging during the discharge process, so improvements are needed. Utility Model Content

[0004] The purpose of this invention is to provide an automatic anti-clogging device for a denitrification ash conveying system, so as to solve the problem of easy clogging of the ash discharge pipe at the bottom of the ash hopper mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic anti-clogging device for a denitrification ash conveying system, comprising an ash conveying pipe body, wherein a first ash hopper, a second ash hopper, and a third ash hopper are provided at the top of the ash conveying pipe body, and a hopper pump is provided between the ash conveying pipe body and each of the first, second, and third ash hoppers. A second pressure gauge and a third pressure gauge are provided on the hopper pumps at the lower ends of the first and second ash hoppers, and an air compressor pump is provided on one side of the ash conveying pipe body. A diversion pipe is connected to the air compressor pump, and a main valve is provided on the diversion pipe. A third connection is provided on one side of the diversion pipe. The pipe consists of a first connecting pipe, a second connecting pipe, a first connecting pipe, and a fourth connecting pipe. The other ends of the fourth connecting pipe, the third connecting pipe, the second connecting pipe, and the first connecting pipe are all connected to the ash conveying pipe body. A first pressure monitoring gauge is installed on the third connecting pipe. A fourth sealing solenoid valve, a third sealing solenoid valve, a second sealing solenoid valve, and a first sealing solenoid valve are respectively installed near the ash conveying pipe body on the fourth connecting pipe, the third connecting pipe, the second connecting pipe, and the first connecting pipe. A main ash discharge valve is installed at the output end of the ash conveying pipe body. An electromagnetic ball valve is installed at the connection between the silo pump at the lower end of the first ash hopper and the ash conveying pipe body.

[0006] Preferably, a discharge pipe is provided at the bottom of the first ash hopper, and a first discharge valve is provided at the bottom of the first ash hopper.

[0007] Preferably, a second ash discharge valve is provided at the bottom of the second ash hopper, and a third ash discharge valve is provided at the bottom of each of the third ash hoppers.

[0008] Compared with the prior art, the beneficial effects of this utility model are:

[0009] (1) This device can automatically clear the ash conveying pipe, avoid blockage of the ash conveying pipe, and ensure the ash discharge efficiency of the ash conveying pipe.

[0010] (2) This device can detect the flow rate of multiple sections of the ash conveying pipe in a timely manner by setting a first pressure detector, a second pressure detector and a third pressure detector on the ash conveying pipe. By detecting the change in pressure, the air compressor pump can be turned on in time to clear the blockage and avoid the ash conveying pipe from becoming blocked.

[0011] (3) This device sets a second connecting pipe, a fourth connecting pipe and a first connecting pipe at the corresponding positions on the first pressure gauge, the second pressure gauge and the third pressure gauge at the bottom of the ash conveying pipe. The second connecting pipe, the fourth connecting pipe and the first connecting pipe can be controlled independently to unclog a certain blockage area of ​​the ash conveying pipe, thereby improving the unclogging efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an automatic anti-clogging device for a denitrification ash conveying system according to the present invention;

[0013] Figure 2 This is a top view of the diversion pipe of an automatic anti-clogging ash conveying device for a denitrification ash conveying system according to this utility model;

[0014] Figure 3 This is a left view of an automatic anti-clogging device for a denitrification and ash conveying system according to the present invention.

[0015] In the diagram: 1. First pressure gauge; 2. Ash conveying pipe; 3. First sealing solenoid valve; 4. Second pressure gauge; 5. First connecting pipe; 6. Second sealing solenoid valve; 7. Third pressure gauge; 8. Second connecting pipe; 9. Third sealing solenoid valve; 10. Third connecting pipe; 11. First ash discharge valve; 12. First ash hopper; 13. Second ash discharge valve; 14. Second ash hopper; 15. Third ash discharge valve; 16. Third ash hopper; 17. Diverter pipe; 18. Air compressor pump; 19. Fourth connecting pipe; 20. Fourth sealing solenoid valve; 21. Silo pump. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-3This utility model provides a technical solution: an automatic anti-clogging device for a denitrification ash conveying system, including an ash conveying pipe body 2. A first ash hopper 12, a second ash hopper 14, and a third ash hopper 16 are provided at the top of the ash conveying pipe body 2. A hopper pump 21 is provided between the ash conveying pipe body 2 and the first ash hopper 12, the second ash hopper 14, and the third ash hopper 16. A second pressure gauge 4 and a third pressure gauge 7 are provided on the hopper pump 21 at the lower end of the first ash hopper 12 and the second ash hopper 14. An air compressor pump 18 is provided on one side of the ash conveying pipe body 2. A diverter pipe 17 is connected to the air compressor pump 18. A main valve is provided on the diverter pipe 17. An electromagnetic ball valve is provided at the connection between the hopper pump 21 at the lower end of the first ash hopper 12 and the second ash hopper 14 and the ash conveying pipe body 2.

[0018] Furthermore, a discharge pipe is provided at the bottom of the first ash hopper 12, and a first discharge valve 11 is provided at the bottom of the first ash hopper 12. When the first discharge valve 11 causes blockage at the lower end of the first ash hopper 12, the discharge of the first ash hopper 12 can be closed in time.

[0019] Furthermore, a second ash discharge valve 13 is provided at the bottom of the second ash hopper 14, and a third ash discharge valve 15 is provided at the bottom of the third ash hopper 16. When the second ash discharge valve 13 and the third ash discharge valve 15 cause blockage at the lower end of the second ash hopper 14 and the third ash hopper 16, the discharge of the second ash hopper 14 and the third ash hopper 16 can be closed in time.

[0020] One side of the diversion pipe 17 is connected to the third connecting pipe 10, the second connecting pipe 8, the first connecting pipe 5 and the fourth connecting pipe 19. The other end of the fourth connecting pipe 19, the third connecting pipe 10, the second connecting pipe 8 and the first connecting pipe 5 are all connected to the ash conveying pipe body 2. The third connecting pipe 10 is equipped with a first pressure monitoring gauge 1.

[0021] The fourth connecting pipe 19, the third connecting pipe 10, the second connecting pipe 8, and the first connecting pipe 5 are respectively equipped with a fourth sealing solenoid valve 20, a third sealing solenoid valve 9, a second sealing solenoid valve 6, and a first sealing solenoid valve 3 near the ash conveying pipe body 2. The output end of the ash conveying pipe body 2 is equipped with a main ash discharge valve. It should be noted that the above-mentioned sealing solenoid valves are all electrically connected to the controller via wires. The ash discharge valve in the scheme also adopts the existing electric control valve, and this electric control valve is also electrically connected to the controller via wires. In addition, the pressure gauge in the scheme is also electrically connected to the controller via wires. The controller is electrically connected to the air compressor pump 18 via wires. The pressure gauge can be the existing TXZC2 type intelligent electronic pressure switch controller, with a measurement range of -0.1 to 100 MPa and an operating temperature of -25 to 80℃. It monitors the detection part by detecting the pressure set value. When the set range value is reached, it outputs the simulated value to the controller through the equipment for control. The sealing solenoid valve can be the existing high-pressure solenoid valve.

[0022] Working principle: When using the automatic anti-clogging device of the denitrification ash conveying system, the first ash discharge valve 11, the second ash discharge valve 13, and the third ash discharge valve 15 are initially open, and the solenoid ball valve is also open. At this time, the dust inside the first ash hopper 12, the second ash hopper 14, and the third ash hopper 16 falls downwards into the silo pump 21. The lower end of the silo pump 21 is connected to the ash conveying pipe 2 until the dust falls into the ash conveying pipe 2. At this time, the air compressor pump 18, the third sealing solenoid valve 9, and the main ash discharge valve are all open, and the generated compressed air enters the ash conveying pipe 2. The dust and air are pushed into the ash conveying pipe 2 and flowed to the other end of the ash conveying pipe 2 for discharge. During the conveying process, the third pressure sensor 7, the second pressure sensor 4 and the first pressure sensor 1 perform pressure detection in real time. If the detected pressure value fluctuates only around the normal set value (without reaching the set peak value), it indicates that there is slight dust blockage inside the ash conveying pipe 2. At this time, the air delivery volume of the air compressor pump 18 can be increased to improve the conveying force of the airflow formed by the air and dust, so as to clear the slightly accumulated dust.

[0023] In one embodiment, when the ash conveying pipe 2 becomes blocked, the pressure values ​​detected by the second pressure gauge 4, the third pressure gauge 7, and the first pressure gauge 1 increase. At this time, it can be determined that the blockage of the ash conveying pipe 2 is located on the left side of the first ash hopper 12. The controller controls the closure of multiple ash discharge valves and the main ash discharge valve, and multiple solenoid ball valves are in the open state. The third sealing solenoid valve 9 is closed, and the fourth sealing solenoid valve 20 is opened. Compressed gas from the air compressor pump 18 is introduced through the fourth connecting pipe 19 to pressurize and clear the ash conveying pipe 2 in the reverse direction, thereby dispersing the blocked dust. When the detection values ​​of the three sets of pressure gauges return to normal, it indicates that the blockage has been cleared. Then, the multiple ash discharge valves and the main ash discharge valve are opened to allow normal ash discharge.

[0024] In one embodiment, when the pressure value detected by the second pressure gauge 4 is normal, while the pressure values ​​detected by the third pressure gauge 7 and the first pressure gauge 1 increase, it can be determined that the blockage of the ash conveying pipe 2 is located between the right side of the first ash hopper 12 and the left side of the second ash hopper 14. Then, following the above steps, the first sealing solenoid valve 3 can be opened and the solenoid ball valve at the lower end of the first ash hopper 12 can be closed, while the other solenoid ball valves are all open. The air compressor pump 18 is used to compress air into the first connecting pipe 5 separately, and the ash conveying pipe 2 is pressurized and cleared in the reverse direction. When the pressure value detected by the pressure gauge on the right side of the blockage returns to normal, it indicates that the blockage has been cleared.

[0025] In one embodiment, when the pressure values ​​detected by the second pressure gauge 4 and the third pressure gauge 7 are normal, while the pressure value detected by the first pressure gauge 1 increases, it can be determined that the blockage of the ash conveying pipe 2 is located between the right side of the second ash hopper 14 and the left side of the third ash hopper 16. Then, following the above steps, the second sealing solenoid valve 6 is opened, the solenoid ball valve at the lower end of the second ash hopper 14 is closed, and the other solenoid ball valves are in the open state. The air compressor pump 18 is used to compress air into the second connecting pipe 8 separately, and the ash conveying pipe 2 is pressurized and cleared in the reverse direction. When the detection value of the first pressure gauge 1 on the right side of the blockage returns to normal, it can be indicated that the blockage has been cleared.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic anti-clogging device for a denitration ash conveying system, comprising an ash conveying pipe body (2), characterized in that: The top of the ash conveying pipe body (2) is provided with a first ash hopper (12), a second ash hopper (14) and a third ash hopper (16). A hopper pump (21) is provided between the ash conveying pipe body (2) and the first ash hopper (12), the second ash hopper (14) and the third ash hopper (16). A second pressure gauge (4) and a third pressure gauge (7) are provided on the hopper pump (21) at the lower end of the first ash hopper (12) and the second ash hopper (14). An air compressor pump (18) is provided on one side of the ash conveying pipe body (2). A diverter pipe (17) is connected to the air compressor pump (18). A main valve is provided on the diverter pipe (17). A third connecting pipe (10), a second connecting pipe (8), a first connecting pipe (5) and a fourth connecting pipe (5) are connected to one side of the diverter pipe (17). The other ends of the pipe (19), the fourth connecting pipe (19), the third connecting pipe (10), the second connecting pipe (8) and the first connecting pipe (5) are all connected to the ash conveying pipe body (2). The third connecting pipe (10) is equipped with a first pressure monitoring gauge (1). The fourth connecting pipe (19), the third connecting pipe (10), the second connecting pipe (8) and the first connecting pipe (5) are respectively equipped with a fourth sealing solenoid valve (20), a third sealing solenoid valve (9), a second sealing solenoid valve (6) and a first sealing solenoid valve (3) near the ash conveying pipe body (2). The output end of the ash conveying pipe body (2) is equipped with a main ash discharge valve. The silo pump (21) at the lower end of the first ash hopper (12) and the second ash hopper (14) is equipped with an electromagnetic ball valve at the connection between it and the ash conveying pipe body (2).

2. The automatic anti-clogging device of a denitration ash conveying system according to claim 1, characterized in that: The bottom of the first ash hopper (12) is provided with an ash discharge pipe and the bottom of the first ash hopper (12) is provided with a first ash discharge valve (11).

3. The automatic anti-clogging device for a denitrification ash conveying system according to claim 1, characterized in that: The bottom of the second ash hopper (14) is provided with a second ash discharge valve (13), and the bottom of the third ash hopper (16) is provided with a third ash discharge valve (15).

Images