Explosion-proof system of ash discharging main bin

Abstract

The utility model discloses an anti-explosion system for a main ash discharging bin, which comprises the main ash discharging bin, a pressure sensor and a nitrogen pipe are connected to the side of the main ash discharging bin, the pressure sensor is electrically connected with a PLC (programmable logic controller), the PLC is electrically connected with a control valve on the nitrogen pipe, and a bypass of the nitrogen pipe is connected with a pressure relief system. When the pressure is small, the nitrogen is filled into the ash discharging main bin to improve the internal pressure and guarantee the conveying stability, and when the pressure is large, the nitrogen is discharged into the buffer collector through the pressure relief pipe for pressure relief, so that the risk of explosion caused by overpressure in the ash discharging main bin is avoided; and dust in exhausted gas can be collected, and pollution to the surrounding environment is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of ash unloading general warehouse safety, specifically relates to an ash unloading general warehouse explosion -proof system. BACKGROUND

[0002] Ash unloading general warehouse is used for collecting ash produced by filtering system (dust remover). The ash enters ash unloading general warehouse through ash inlet pipe of pneumatic conveying pipeline, and the ash in ash unloading general warehouse is discharged to transport tank car through bottom outlet control valve for transportation. Since the existing ash unloading general warehouse has ash inlet and ash unloading process inside, pressure fluctuation problem exists. Since ash unloading general warehouse does not have explosion -proof system, once the pressure overpressure, explosion risk is easily produced. When the pressure in ash unloading general warehouse is small, ash transportation is not smooth, which affects the operation safety of the whole ash unloading general warehouse. SUMMARY

[0003] In order to solve the above -mentioned problems, the utility model provides an ash unloading general warehouse explosion -proof system.

[0004] The utility model discloses a following technical scheme realizes:

[0005] An ash unloading general warehouse explosion -proof system, including ash unloading general warehouse, ash unloading general warehouse side is connected with pressure sensor and nitrogen pipe, pressure sensor is electrically connected with PLC controller, and PLC controller is electrically connected with the control valve on nitrogen pipe, and nitrogen pipe bypass is connected with pressure relief system.

[0006] Further, the pressure relief system includes a pressure relief pipe, a pressure relief valve is installed on the pressure relief pipe, and the pressure relief valve is electrically connected with the PLC controller.

[0007] Further, a buffer collector for collecting dust is installed at the outlet of the pressure relief pipe.

[0008] Further, the buffer collector includes a corrugated pipe connected with the outlet of the pressure relief pipe, and a collection cloth bag is connected to the bottom of the corrugated pipe.

[0009] Further, the connection point of the pressure relief pipe and the nitrogen pipe is at the front end of the control valve.

[0010] Compared with the prior art, the utility model has the advantages that: the system can ensure that the pressure in the ash unloading general warehouse is stable, nitrogen is filled into the ash unloading general warehouse when the pressure is small to increase the internal pressure and ensure the stability of the transportation, and the pressure relief pipe is used to discharge the gas to the buffer collector when the pressure is large, thereby avoiding the risk of explosion caused by overpressure in the ash unloading general warehouse. The buffer collector not only buffers the impact of pressure, but also collects the dust in the discharged gas, avoiding environmental pollution. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1It is the system schematic diagram of the utility model;

[0012] Figure 2 It is the buffer collector structure schematic diagram of the utility model;

[0013] In the drawing: ash unloading warehouse 1, ash inlet pipe 2, pressure sensor 3, PLC controller 4, nitrogen pipe 5, control valve 6, pressure relief pipe 7, pressure relief valve 8, buffer collector 9, corrugated pipe 10, collection cloth bag 11. DETAILED DESCRIPTION

[0014] The utility model will be described in further detail below in combination with the drawings and specific embodiments:

[0015] As Figure 1 Indicated, a kind of ash unloading warehouse explosion-proof system, including ash unloading warehouse 1, ash unloading warehouse 1 side is connected with pressure sensor 3 and nitrogen pipe 5, pressure sensor 3 is electrically connected with PLC controller 4, PLC controller 4 is electrically connected with control valve 6 on nitrogen pipe 5, nitrogen pipe 5 bypass connection has pressure relief system.

[0016] As Figure 1 Indicated, pressure relief system includes pressure relief pipe 7, pressure relief valve 8 is installed on pressure relief pipe 7, pressure relief valve 8 is electrically connected with PLC controller 4.

[0017] As Figure 1 Indicated, the outlet of pressure relief pipe 7 is installed with the buffer collector 9 for collecting dust.

[0018] As Figure 2 Indicated, buffer collector 9 includes corrugated pipe 10 connected with the outlet of pressure relief pipe 7, corrugated pipe 10 is connected with the flange of pressure relief pipe 7 and it is set with metal corrugated pipe, metal corrugated pipe is cross-section as bending, it has good buffer interception, reduce high-pressure gas directly impact on collection cloth bag 11, the bottom of corrugated pipe 10 is connected with collection cloth bag 11, collection cloth bag 11 can use the dust cloth bag in waste cloth bag dust collector, it can filter out gas under the premise of collecting dust, when the dust collected in collection cloth bag 11 is more, collection cloth bag 11 can be taken down and handled.

[0019] As Figure 1 Indicated, the connecting point of pressure relief pipe 7 and nitrogen pipe 5 is at the front end of control valve 6, so that when pressure relief pipe 7 is relieved, it will not be unloaded through nitrogen pipe 5.

[0020] The implementation principle of the ash unloading warehouse explosion-proof system of the embodiment of the application is:

[0021] The pressure sensor 3 monitors the pressure inside the ash discharging bin 1 in real time, and when the detected pressure value is less than 50 Pa (the set value can be set according to the working condition of the ash discharging bin 1 in actual operation), the pressure sensor 3 transmits a signal to the PLC controller 4, the PLC controller 4 controls to open the control valve 6 on the nitrogen gas pipe 5, the nitrogen gas pipe 5 connected with a certain pressure fills nitrogen into the ash discharging bin 1 to increase the internal pressure and ensure the stability of conveying, and the nitrogen gas has the function of explosion prevention, which can significantly reduce the risk of fire and explosion, and when the pressure reaches 500 Pa, the PLC controller 4 controls to close the control valve 6 to stop the gas supply.

[0022] When the internal pressure of the ash discharging bin 1 reaches an ultra-high pressure, the set value is 3000 Pa, the pressure sensor 3 transmits a pressure signal to the PLC controller 4, the PLC controller 4 controls to open the pressure relief valve 8 of the pressure relief system, the internal pressure of the ash discharging bin 1 is discharged along the nitrogen gas pipe 5 and the pressure relief pipe 7 to the buffer collector 9 for pressure relief, when the internal pressure of the ash discharging bin 1 decreases to 2000 Pa, the PLC controller controls the pressure relief valve 8 to be closed, so as to avoid the risk of explosion caused by the overpressure in the ash discharging bin 1, and the set buffer collector can not only buffer the impact of pressure, but also collect the dust in the discharged gas, so as to avoid the pollution of the surrounding environment.

[0023] The basic principle, main features and advantages of the utility model are shown and described. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof system for an ash unloading silo, comprising an ash unloading silo (1), characterized in that: The ash unloading silo (1) is connected to a pressure sensor (3) and a nitrogen pipe (5) on its side. The pressure sensor (3) is electrically connected to a PLC controller (4). The PLC controller (4) is electrically connected to a control valve (6) on the nitrogen pipe (5). The nitrogen pipe (5) is connected to a pressure relief system via a bypass.

2. The explosion-proof system for a main ash unloading silo according to claim 1, characterized in that: The pressure relief system includes a pressure relief pipe (7), on which a pressure relief valve (8) is installed, and the pressure relief valve (8) is electrically connected to the PLC controller (4).

3. The explosion-proof system for a main ash unloading silo according to claim 2, characterized in that: The outlet of the pressure relief pipe (7) is equipped with a buffer collector (9) for collecting dust.

4. The explosion-proof system for a main ash unloading silo according to claim 3, characterized in that: The buffer collector (9) includes a bellows (10) connected to the outlet of the pressure relief pipe (7), and a collection bag (11) is connected to the bottom of the bellows (10).

5. The explosion-proof system for a main ash unloading silo according to claim 4, characterized in that: The connection point between the pressure relief pipe (7) and the nitrogen pipe (5) is located at the front end of the control valve (6).

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