Remote alarm device for detecting blockage of slag discharging opening of slag crusher and boiler dry slag discharging system

Abstract

The utility model discloses a remote alarm device for detecting blockage of a slag discharge port of a slag crusher and a boiler dry slag discharge system. The remote alarm device comprises a detection probe, a signal transmitter, an on-site audible and visual alarm and a remote alarm, wherein the detection probe is arranged at a slag discharging opening of the slag crusher, and the detection probe is used for detecting the blockage condition of the slag discharging opening; the remote alarm is arranged in a duty room of equipment maintenance personnel; the detection probe is in communication connection with the signal transmitter and the local audible and visual alarm; and the signal transmitter is in communication connection with the remote alarm. The remote alarm device can detect the blockage condition of the slag discharge port of the slag crusher, can forecast the blockage condition in advance at the initial stage of a fault, and prevents equipment from tripping and stopping due to blockage and accumulation of ash in the boiler dry slag discharge system, so that the efficiency of the boiler dry slag discharge system is improved, and the long-term fault-free safe operation of the boiler dry slag discharge system is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of remote alarms, in particular to a remote alarm device for detecting blockage of a slag outlet of a slag crusher and a boiler dry slag discharge system. Background Art

[0002] During the thermal power generation process, the coal slag generated after the combustion of the power plant boiler needs to be crushed by the slag crusher. At present, the slag discharge method of power plant boilers mostly adopts dry slag discharge, which allows the waste remaining from the combustion of the boiler furnace to fall into the conveying device through the bottom of the furnace, and then slowly transported to the slag crusher through the conveying device, where the large slag is crushed and then discharged into the slag bin through the slag discharge port at the lower end of the slag crusher.

[0003] During the slag discharge process, the slag outlet of the slag crusher is prone to blockage, causing the boiler dry slag discharge system to trip. In addition, the high temperature generated by the accumulation of a large amount of ash will cause serious damage to the equipment, and the blockage of the slag outlet of the slag crusher cannot be discovered in time. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned problems and provide a remote alarm device for detecting blockage of the slag outlet of a slag crusher. The remote alarm device can detect the blockage of the slag outlet of the slag crusher, and can predict the blockage in advance at the early stage of the fault, thereby preventing the boiler dry slag discharge system from tripping and shutting down due to ash blockage and accumulation, thereby improving the efficiency of the boiler dry slag discharge system and ensuring long-term trouble-free and safe operation of the boiler dry slag discharge system.

[0005] Another object of the utility model is to provide a boiler dry slagging system comprising a remote alarm device.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] A remote alarm device for detecting blockage of a slag outlet of a slag crusher comprises a detection probe, a signal transmitter, an on-site sound and light alarm and a remote alarm; wherein the detection probe is arranged at the slag outlet of the slag crusher, and the detection probe is used to detect blockage of the slag outlet; the remote alarm is arranged in a duty room of an equipment maintenance personnel; the detection probe is communicatively connected to the signal transmitter and the on-site sound and light alarm; the signal transmitter is communicatively connected to the remote alarm.

[0008] The working principle of the above-mentioned remote alarm device for detecting blockage of the slag outlet of the slag crusher is:

[0009] When the detection probe detects that the slag outlet of the slag crusher is blocked, the detection probe generates a blockage signal and sends the blockage signal to the local sound and light alarm and the signal transmitter at the same time. After receiving the blockage signal, the local sound and light alarm will issue a sound and light alarm on site to notify the equipment maintenance personnel. At the same time, the signal transmitter will send the blockage signal to the remote alarm in the duty room. After receiving the blockage signal, the remote alarm will sound an alarm to notify the equipment maintenance personnel in the duty room to go to the site to clear the slag outlet of the slag crusher.

[0010] A preferred solution of the utility model, wherein the detection probe includes a housing, a slide bar slidably arranged on the housing, a reset spring arranged between the housing and the slide bar, and a travel switch arranged in the housing, one end of the reset spring acts on the housing, and the other end of the reset spring acts on the slide bar. In the above structure, the front end of the slide bar extends into the slag outlet, and the rear end is slidably connected with the housing. When the slag crusher operates normally and the material is unobstructed, the interior of the slag outlet at the bottom of the slag crusher is empty. At this time, there is no pressure at the front end of the slide bar. Under the action of the reset spring, the rear end of the slide bar is away from the travel switch. At this time, the travel switch is in a normally open state; if the slag outlet or the interior of the slag bin of the slag crusher is blocked and slag blocks are accumulated, the slide bar is pressed to move backward under the pressure of the accumulated slag blocks and overcomes the elastic force of the reset spring. When the rear end of the slide bar touches the travel switch, the travel switch is actuated and outputs a jam signal to the signal transmitter; the mechanical structure of the travel switch is triggered by using the reset spring and the slide bar to cooperate, which has the advantages of high reliability and no false alarm.

[0011] Furthermore, a mounting flange is provided on the housing, and the housing is mounted on the side of the lower slag opening of the slag crusher through the mounting flange. The mounting flange is provided to facilitate installation and fixing. In addition, during installation, the mounting position can be adjusted by adjusting the mounting position of the bolts of the mounting flange to adjust the trigger sensitivity of the detection probe.

[0012] Preferably, the detection probe further comprises an output signal line, one end of which is connected to the travel switch, and the other end of which is connected to the signal transmitter. Through the output signal line, stable signal transmission can be achieved.

[0013] Preferably, the remote alarm device further includes a clutter signal filter for filtering out clutter in the signal, the input end of the clutter signal filter is communicatively connected to the detection probe, and the output end of the clutter signal filter is communicatively connected to the signal transmitter and the local sound and light alarm. In the above structure, the output signal line of the detection probe is connected to the clutter signal filter, and when the detection probe detects that the lower slag outlet of the slag crusher is blocked, the detection probe generates a blocking signal and transmits the blocking signal to the clutter signal filter. After the clutter signal filter filters out the clutter in the blocking signal, it transmits the blocking signal to the signal transmitter and the local sound and light alarm at the same time.

[0014] Preferably, the signal transmitter is a wireless signal transmitter, the remote alarm is a wireless remote alarm, and the wireless signal transmitter is wirelessly connected to the wireless remote alarm. By implementing wireless communication, the layout of signal lines can be reduced, and the structure is simpler.

[0015] Furthermore, the transmission distance between the wireless signal transmitter and the wireless remote alarm is more than 2 km.

[0016] Preferably, the remote alarm includes a host, a receiving antenna, an alarm buzzer and an alarm indicator light arranged on the host; the receiving antenna is used to receive the signal transmitted by the signal transmitter. When the receiving antenna receives the jam signal, the alarm buzzer sounds, and the alarm indicator light changes from green to red flashing state, notifying the equipment maintenance personnel in the duty room.

[0017] Preferably, the remote alarm further comprises a reset button arranged on the host. When the equipment maintenance personnel in the duty room receive the alarm of the remote alarm, the alarm can be turned off by pressing the reset button.

[0018] Preferably, the signal transmitter comprises a transmitting antenna, and the transmitting antenna is wirelessly connected to the receiving antenna. The transmitting antenna transmits the jam signal, and the receiving antenna receives the jam signal transmitted by the transmitting antenna.

[0019] A boiler dry slag discharge system comprises a boiler furnace, a slag crusher, a slag well arranged at the lower end of the boiler furnace, a conveying device arranged between the slag well and the slag crusher, a slag bin arranged below the slag lower opening of the slag crusher, and the remote alarm device; the detection probe is arranged on the side of the slag lower opening of the slag crusher, and the signal transmitter is arranged on the top of the slag crusher.

[0020] The working principle of the above boiler dry slagging system is:

[0021] The waste remaining from the combustion in the boiler furnace enters the slag pit through the bottom of the boiler furnace, is guided by the slag pit, and falls into the conveying device. The conveying device transports the waste to the inlet of the slag crusher, and enters the crushing mechanism in the slag crusher through the inlet to crush the waste. The crushed waste is discharged from the slag outlet at the lower end of the slag crusher into the slag bin. When the remote alarm device detects that the slag outlet of the slag crusher is blocked, it will issue a remote alarm to notify the equipment maintenance personnel in the duty room to go to the site to clear and clean the slag outlet of the slag crusher.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] 1. The remote alarm device in the utility model detects the blockage of the slag outlet of the slag crusher through the detection probe. When blockage occurs, the local sound and light alarm will sound an alarm, and the remote alarm will also sound an alarm to notify the equipment maintenance personnel in the duty room to go to the site to clear and clean the slag outlet of the slag crusher. Therefore, the remote alarm device can predict the blockage in advance at the early stage of the fault, prevent the boiler dry slag discharge system from tripping and stopping due to ash and slag blockage and accumulation, thereby improving the efficiency of the boiler dry slag discharge system and ensuring the long-term trouble-free and safe operation of the boiler dry slag discharge system.

[0024] 2. The remote alarm device in the utility model is stable and reliable. When the boiler dry slag discharge system is operating normally, the slag temperature is as high as about 300°C. Abnormal conditions such as slag accumulation can be discovered and handled in time to ensure that the equipment will not be damaged by the high temperature generated by the slag accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The utility model is a schematic diagram of a principle block diagram of a specific implementation method of a remote alarm device for detecting blockage of a slag outlet of a slag crusher.

[0026] Figure 2 It is a schematic diagram of the structure of the detection probe in the utility model.

[0027] Figure 3 It is a structural schematic diagram of the remote alarm in the utility model.

[0028] Figure 4 The utility model is a schematic structural diagram of a boiler dry slag discharge system. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is further described below in conjunction with embodiments and drawings, but the implementation methods of the utility model are not limited thereto.

[0030] Example 1

[0031] See also Figure 1 and Figure 4 This embodiment discloses a remote alarm device for detecting the blockage of the slag outlet of a slag crusher, comprising a detection probe 1, a signal transmitter 2, an on-site sound and light alarm 3, and a remote alarm 4; wherein the detection probe 1 is arranged at the slag outlet 6 of the slag crusher 5, and the detection probe 1 is used to detect the blockage of the slag outlet 6 of the slag crusher 5; the remote alarm 4 is arranged in the duty room of the equipment maintenance personnel; the detection probe 1 is connected to the signal transmitter 2 and the on-site sound and light alarm 3; the signal transmitter 2 is connected to the remote alarm 4. The detection probe 1 can detect the blockage of the slag outlet 6 of the slag crusher 5, and the remote alarm 4 can realize the remote alarm function, which can predict the blockage in advance at the early stage of the fault, and solve the problem that the slag crusher 5 is overloaded and tripped after the ash and slag fill the slag outlet 6 at the bottom of the slag crusher 5 after the material is blocked, and then the entire boiler dry slag discharge system interlocking protection trips.

[0032] See also Figure 1-Figure 2 and Figure 4 The detection probe 1 includes a shell 1-1, a slide bar 1-2 slidably arranged on the shell 1-1, a return spring 1-3 arranged between the shell 1-1 and the slide bar 1-2, and a travel switch 1-4 arranged in the shell 1-1, one end of the return spring 1-3 acts on the shell 1-1, and the other end of the return spring 1-3 acts on the slide bar 1-2. In the above structure, the front end of the slide bar 1-2 extends into the slag outlet 6, and the rear end is slidably connected to the shell 1-1. When the slag crusher 5 operates normally and the material is discharged smoothly, the interior of the slag outlet 6 at the bottom of the slag crusher 5 is empty. At this time, there is no pressure at the front end of the slide bar 1-2. Under the action of the reset spring 1-3, the rear end of the slide bar 1-2 is away from the travel switch 1-4. At this time, the travel switch 1-4 is in a normally open state; if the slag outlet 6 of the slag crusher 5 or the inside of the slag bin 7 is blocked, and slag blocks are accumulated, the slide bar 1-2 is pressed backward under the pressure of the accumulated slag blocks and overcomes the elastic force of the reset spring 1-3. When the rear end of the slide bar 1-2 touches the travel switch 1-4, the travel switch 1-4 is actuated to output a jam signal to the signal transmitter 2; the mechanical structure of the travel switch 1-4 is triggered by cooperating with the reset spring 1-3 and the slide bar 1-2, which has the advantages of high reliability and no false alarm.

[0033] See also Figure 1-Figure 2 and Figure 4 The housing 1-1 is provided with a mounting flange 1-5, and the housing 1-1 is mounted on the side of the lower slag opening 6 of the slag crusher 5 through the mounting flange 1-5. The mounting flange 1-5 is provided to facilitate installation and fixing. In addition, during installation, the trigger sensitivity of the detection probe 1 can be adjusted by adjusting the mounting position through the bolts of the mounting flange 1-5.

[0034] See also Figure 1 The detection probe 1 also includes an output signal line 1-6, one end of which is connected to the travel switch 1-4, and the other end is connected to the signal transmitter 2. Through the output signal line 1-6, stable signal transmission can be achieved, and the output signal line 1-6 can be a core in a multi-core cable.

[0035] See also Figure 1 The remote alarm device also includes a clutter signal filter 8 for filtering out clutter in the signal. The input end of the clutter signal filter 8 is communicatively connected to the detection probe 1, and the output end of the clutter signal filter 8 is communicatively connected to the signal transmitter 2 and the local sound and light alarm 3. In the above structure, the output signal line 1-6 of the detection probe 1 is connected to the clutter signal filter 8. When the detection probe 1 detects that the lower slag port 6 of the slag crusher 5 is blocked, the detection probe 1 generates a blocking signal and transmits the blocking signal to the clutter signal filter 8. After the clutter signal filter 8 filters out the clutter in the blocking signal, it transmits the blocking signal to the signal transmitter 2 and the local sound and light alarm 3 at the same time.

[0036] See also Figure 1 The signal transmitter 2 is a wireless signal transmitter, the remote alarm 4 is a wireless remote alarm, and the wireless signal transmitter is wirelessly connected to the wireless remote alarm. By realizing wireless communication, the layout of signal lines can be reduced, and the structure is simpler.

[0037] Furthermore, the transmission distance between the wireless signal transmitter and the wireless remote alarm is more than 2 km.

[0038] See also Figure 1 and Figure 3 The remote alarm device 4 includes a host 4-1, a receiving antenna 4-2, an alarm buzzer 4-3 and an alarm indicator light 4-4 arranged on the host 4-1; the receiving antenna 4-2 is used to receive the signal transmitted by the signal transmitter 2. When the receiving antenna 4-2 receives the jam signal, the alarm buzzer 4-3 sounds, and the alarm indicator light 4-4 changes from green to red flashing state, notifying the equipment maintenance personnel in the duty room.

[0039] See also Figure 3 There are two warning indicator lights 4-4.

[0040] See also Figure 1 and Figure 3 The remote alarm 4 also includes a reset button arranged on the host 4-1. When the equipment maintenance personnel in the duty room receive the alarm of the remote alarm 4, the alarm can be turned off by the reset button.

[0041] See also Figure 1 and Figure 3 The remote alarm 4 also includes a power cord 4 - 6 arranged on the host 4 - 1 for connecting to a 220V power supply 14 , and the signal transmitter 2 is also connected to the 20V power supply 14 .

[0042] See also Figure 1 The signal transmitter 2 includes a transmitting antenna 2-1, and the transmitting antenna 2-1 is wirelessly connected to the receiving antenna 4-2. The transmitting antenna 2-1 transmits the jam signal, and the receiving antenna 4-2 receives the jam signal transmitted by the transmitting antenna 2-1.

[0043] See also Figure 1 In this embodiment, the various components of the remote alarm device (i.e., between the detection probe 1 and the clutter signal filter 8, between the clutter signal filter 8 and the local sound and light alarm 3, and between the clutter signal filter 8 and the signal transmitter 2) are connected through a multi-core cable for power supply and signal transmission.

[0044] See also Figure 1 and Figure 4 The working principle of the above-mentioned remote alarm device for detecting blockage of the slag outlet of the slag crusher is:

[0045] When the detection probe 1 detects that the lower slag outlet 6 of the slag crusher 5 is blocked, the detection probe 1 generates a blockage signal and sends the blockage signal to the local sound and light alarm 3 and the signal transmitter 2 at the same time. After receiving the blockage signal, the local sound and light alarm 3 will issue a sound and light alarm on site to notify the equipment maintenance personnel; at the same time, the signal transmitter 2 will send the blockage signal to the remote alarm 4 in the duty room. After receiving the blockage signal, the remote alarm 4 will alarm to notify the equipment maintenance personnel in the duty room to go to the site to clear and clean the lower slag outlet 6 of the slag crusher 5.

[0046] Example 2

[0047] See also Figure 1 and Figure 4 The present embodiment discloses a boiler dry slag discharge system, comprising a boiler furnace 9, a slag crusher 5, a slag well 10 arranged at the lower end of the boiler furnace 9, a conveying device 11 arranged between the slag well 10 and the slag crusher 5, a slag bin 7 arranged below the lower slag opening 6 of the slag crusher 5, and the remote alarm device as described in Example 1; the detection probe 1 is arranged on the side of the lower slag opening 6 of the slag crusher 5, and the signal transmitter 2 is arranged on the top of the slag crusher 5.

[0048] There are two slag pits 10. The conveying device 11 can be a conveyor belt or an auger conveying device 11.

[0049] See also Figure 1 and Figure 4 The working principle of the above boiler dry slagging system is:

[0050] The remaining waste material from the combustion of the boiler furnace 9 enters the slag well 10 through the furnace bottom of the boiler furnace 9, is guided by the slag well 10, and falls into the conveying device 11. The conveying device 11 conveys the waste material to the inlet 13 of the slag crusher 5, and enters the crushing mechanism in the slag crusher 5 through the inlet 13 to crush the waste material. The crushed waste material is discharged from the slag outlet 6 at the lower end of the slag crusher 5 into the slag bin 7. When the remote alarm device detects that the slag outlet 6 of the slag crusher 5 is blocked, a remote alarm is issued to notify the equipment maintenance personnel in the duty room to go to the site to clear and clean the slag outlet 6 of the slag crusher 5.

[0051] The above is a preferred implementation mode of the present invention, but the implementation mode of the present invention is not limited by the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A remote alarm device for detecting blockage of the slag outlet of a slag crusher, characterized in that: It includes a detection probe, a signal transmitter, an on-site sound and light alarm and a remote alarm; wherein the detection probe is arranged at the slag outlet of the slag crusher, and the detection probe is used to detect the blockage of the slag outlet; the remote alarm is arranged in the duty room of the equipment maintenance personnel; the detection probe is connected to the signal transmitter and the on-site sound and light alarm in communication; the signal transmitter is connected to the remote alarm in communication; The detection probe includes a shell, a slide rod slidably arranged on the shell, a return spring arranged between the shell and the slide rod, and a travel switch arranged in the shell, one end of the return spring acts on the shell, and the other end of the return spring acts on the slide rod.

2. A remote alarm device for detecting blockage of a slag outlet of a slag crusher according to claim 1, characterized in that: The shell is provided with a mounting flange, and the shell is mounted on the side of the lower slag opening of the slag crusher through the mounting flange.

3. A remote alarm device for detecting blockage of a slag outlet of a slag crusher according to claim 1, characterized in that: The detection probe also includes an output signal line, one end of which is connected to the travel switch, and the other end of which is connected to the signal transmitter.

4. A remote alarm device for detecting blockage of a slag outlet of a slag crusher according to claim 1, characterized in that: The remote alarm device also includes a clutter signal filter for filtering out clutter in the signal, the input end of the clutter signal filter is communicatively connected to the detection probe, and the output end of the clutter signal filter is communicatively connected to the signal transmitter and the local sound and light alarm.

5. A remote alarm device for detecting blockage of a slag outlet of a slag crusher according to claim 1, characterized in that: The signal transmitter is a wireless signal transmitter, the remote alarm is a wireless remote alarm, and the wireless signal transmitter is wirelessly connected to the wireless remote alarm.

6. A remote alarm device for detecting blockage of a slag outlet of a slag crusher according to claim 5, characterized in that: The remote alarm includes a host, a receiving antenna arranged on the host, an alarm buzzer and an alarm indicator light; the receiving antenna is used to receive the signal transmitted by the signal transmitter.

7. A remote alarm device for detecting blockage of a slag outlet of a slag crusher according to claim 6, characterized in that: The remote alarm further comprises a reset button arranged on the host.

8. A remote alarm device for detecting blockage of a slag outlet of a slag crusher according to claim 6, characterized in that: The signal transmitter comprises a transmitting antenna, and the transmitting antenna is wirelessly connected to the receiving antenna.

9. A boiler dry slag removal system, characterized in that: It includes a boiler furnace, a slag crusher, a slag well arranged at the lower end of the boiler furnace, a conveying device arranged between the slag well and the slag crusher, a slag bin arranged below the lower slag opening of the slag crusher, and a remote alarm device as described in any one of claims 1 to 8; the detection probe is arranged on the side of the lower slag opening of the slag crusher, and the signal transmitter is arranged on the top of the slag crusher.

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