Coal bunker coal level monitoring device

Abstract

The utility model discloses a coal bunker coal level monitoring device, which belongs to the technical field of coal level monitoring and comprises an outer protective layer mounted on the outer side of a coal bunker along the height direction of the coal bunker, and a soft pressure measuring air pipe mounted in an inner cavity of the outer protective layer along the height direction of the outer protective layer. The outer wall of the outer protection layer is provided with a pressure intensity sensor which extends into the pressure measuring air pipe and monitors the air pressure in the pressure measuring air pipe, and an inner cavity of the outer protection layer is provided with a plurality of sets of side-standing sensing triggering mechanisms which are distributed in a linear array mode and are elastically arranged in the height direction of the inner cavity of the outer protection layer. The coal seam in the coal bunker is sensed through the side-standing sensing triggering mechanism, the side pressure of the coal seam can be transmitted to the pressure measuring gas pipe through the side-standing sensing triggering mechanism, and finally whether the height of the coal seam in the coal bunker is changed or not is monitored in real time through the pressure intensity sensor; due to the fact that the side-standing sensing trigger mechanism is elastically arranged, impact of a coal seam can be relieved, the side-standing sensing trigger mechanism is not prone to deformation or damage when being impacted by the coal seam, the side-standing sensing trigger mechanism has better durability, and the later maintenance cost can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal level monitoring, in particular to a coal level monitoring device for a coal bunker. Background Art

[0002] Coal bunkers are facilities used to store coal, usually located in thermal power plants, steel mills, chemical plants or other industrial facilities that require large amounts of coal. In addition, coal bunkers need to take into account coal fluidity, dust prevention, fire prevention, explosion prevention and other safety measures, so the coal level in the bunker needs to be monitored.

[0003] Among the existing patent documents, there is a patent with publication number CN 214268818 U, entitled “A Pressure Sensor Coal Bin Coal Level Monitoring Device”. This patent sets a screw in the coal bin and sets a pressure sensor in the screw, and drives the screw up and down into the coal pile to monitor the coal level in real time. However, in actual application, since the coal flows from top to bottom in the coal bin, the coal will frequently impact the screw, which will cause deformation or thread damage of the screw. At that time, the screw will not be able to complete the lifting task. Since the screw is too prone to failure, the subsequent maintenance cost will increase. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a coal level monitoring device for a coal bunker. The monitoring device senses the coal seam in the coal bunker through a lateral sensing trigger mechanism. The lateral pressure of the coal seam is transmitted to the pressure measuring air pipe through the lateral sensing trigger mechanism. Finally, the pressure sensor is used to monitor in real time whether the height of the coal seam in the coal bunker changes. Due to the elastic setting of the lateral sensing trigger mechanism, it can reduce the impact of the coal seam. It is not easy to be deformed or damaged when impacted by the coal seam. It has better durability and can effectively reduce the subsequent maintenance cost.

[0005] In order to solve the above technical problems, the technical solution of the utility model is implemented as follows:

[0006] A coal level monitoring device for a coal bunker comprises an outer protective layer installed on the outer side of the coal bunker along the height direction of the coal bunker;

[0007] The inner cavity of the outer protective layer is installed with a soft pressure measuring air pipe along its height direction, and a pressure sensor extending into the pressure measuring air pipe and monitoring the air pressure in the pressure measuring air pipe is installed on the outer wall of the outer protective layer; the inner cavity of the outer protective layer is installed with multiple sets of linear array distributed and elastically arranged side-standing sensor trigger mechanisms along its height direction, and whether the coal seam height in the coal bunker changes can be monitored in real time through the side-standing sensor trigger mechanisms;

[0008] The side-standing sensing trigger mechanism includes a side-standing trigger tube, which extends from the inner cavity of the outer protective layer into the coal bunker; two sets of upper and lower slides are fixed on the side of the side-standing trigger tube away from the coal bunker, and the slide is slidably connected to a guide rod fixed in the inner cavity of the outer protective layer, and a spring is mounted on the guide rod for pushing the side-standing trigger tube to move toward the coal bunker; a sensing touch pressure head is fixed on the side of the side-standing trigger tube away from the coal bunker.

[0009] By adopting the above scheme, the monitoring device senses the coal seam in the coal bunker through the side sensor trigger mechanism, and the lateral pressure of the coal seam will be transmitted to the pressure measuring air pipe through the side sensor trigger mechanism, and finally the pressure sensor will be used to monitor in real time whether the height of the coal seam in the coal bunker changes; due to the elastic setting of the side sensor trigger mechanism, it can reduce the impact of the coal seam, and it is not easy to be deformed or damaged when impacted by the coal seam. It has better durability and can effectively reduce the subsequent maintenance cost.

[0010] As a preferred implementation of a coal bunker coal level monitoring device, when the coal seam does not touch the side trigger cylinder, the sensing pressure head does not touch the pressure measuring gas pipe; when the coal seam touches the side trigger cylinder, the sensing pressure head will touch the pressure measuring gas pipe, and then the pressure sensor can monitor the change in the air pressure of the pressure measuring gas pipe;

[0011] The pressure measuring gas pipe is filled with inert gas through a gas injection nozzle located at the bottom thereof;

[0012] Among them, the gas pressure of the inert gas is 1.2-1.5 times the external standard atmospheric pressure.

[0013] By adopting the above scheme, in order to ensure the stability of the gas in the pressure measuring tube, an inert gas, such as nitrogen, is filled in and pressurized to 1.2-1.5 times the external standard atmospheric pressure. At this time, the air pressure in the pressure measuring tube is not easily affected by changes in temperature and other conditions and changes too much, thereby ensuring the stability of the gas in the pressure measuring tube.

[0014] As a preferred embodiment of a coal bunker coal level monitoring device, a touch-sensitive light-emitting component is installed in the sensing touch-pressure head. When the sensing touch-pressure head touches the surface of the pressure measuring air pipe, the touch-sensitive light-emitting component lights up.

[0015] The touch-sensitive lighting assembly includes a light bulb, and a battery is electrically connected to one side of the light bulb; an avoidance groove is provided on the opposite side of the light bulb, and a stylus base is installed in the avoidance groove, and the stylus base is slidably connected to a guide rod 2 fixed in the sensing touch head, and a spring 2 is mounted on the guide rod 2 to push the stylus base to move away from the light bulb; the battery switch includes two electrical connection guide heads distributed on both sides of the light bulb, and a V-shaped electrical connection guide head corresponding to the guide head is fixed on the stylus base;

[0016] Among them, the electrical connection lead and the V-shaped electrical connection guide frame are both conductive bodies; the contact pin base frame is a non-conductive body;

[0017] Among them, a plurality of visual grooves are arranged on the outer side wall of the outer protective layer in a linear array along the length direction thereof, and each visual groove corresponds to the position of each touch-sensitive light-emitting component.

[0018] By adopting the above scheme, in order to conveniently and intuitively observe the coal level height of the coal bunker from the outside, a touch-sensitive light-emitting component is set; when the feeler base does not touch the pressure measuring air pipe, the electrical connection guide head and the V-shaped electrical connection guide frame do not contact each other; when the feeler base touches the pressure measuring air pipe, the electrical connection guide head and the V-shaped electrical connection guide frame will come into contact, and then the battery switch forms a closed circuit, then the light bulb will light up, and the lit light bulb can be observed through the visual slot at this time. The height of the lit light bulb is the height of the coal level in the coal bunker, which roughly indicates the height of the coal level.

[0019] After adopting the above technical solution, the beneficial effects of the utility model are:

[0020] 1. The monitoring device senses the coal seam in the coal bunker through the side-standing sensor trigger mechanism. The side pressure of the coal seam will be transmitted to the pressure measuring gas pipe through the side-standing sensor trigger mechanism, and finally the pressure sensor will be used to monitor in real time whether the height of the coal seam in the coal bunker changes. Due to the elastic setting of the side-standing sensor trigger mechanism, it can reduce the impact of the coal seam. It is not easy to be deformed or damaged when it is impacted by the coal seam. It has better durability and can effectively reduce the subsequent maintenance cost.

[0021] 2. In order to ensure the stability of the gas in the pressure measuring tube, fill it with inert gas, such as nitrogen, and pressurize it to 1.2-1.5 times the external standard atmospheric pressure. At this time, the pressure in the pressure measuring tube is not easily affected by changes in temperature and other conditions and changes too much, thereby ensuring the stability of the gas in the pressure measuring tube;

[0022] 3. In order to conveniently and intuitively observe the coal level height of the coal bunker from the outside, a touch-sensitive light-emitting component is set; when the stylus base does not touch the pressure measuring air pipe, the electrical connection guide head and the V-shaped electrical connection guide frame do not contact each other; when the stylus base touches the pressure measuring air pipe, the electrical connection guide head and the V-shaped electrical connection guide frame will come into contact, and then the battery switch forms a closed circuit, then the light bulb will light up, and the lit light bulb can be observed through the visual slot. The height of the lit light bulb is the height of the coal level in the coal bunker, which roughly indicates the height of the coal level. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 A three-dimensional structural diagram of the utility model as the main view;

[0025] Figure 2 It is a three-dimensional structural diagram of the utility model from the rear;

[0026] Figure 3 It is a three-dimensional structural diagram of the utility model when viewed from above;

[0027] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0028] Figure 5 For display Figure 1 Internal structure diagram of the location of the middle coal seam;

[0029] Figure 6 for Figure 5 The local three-dimensional structure diagram in ;

[0030] Figure 7 for Figure 6 A three-dimensional structural diagram of the medial and lateral sensing trigger mechanism when it does not touch the pressure measuring airway;

[0031] Figure 8 for Figure 6 A three-dimensional structural diagram of the medial and lateral sensing trigger mechanism when it touches and presses the pressure measuring air tube;

[0032] Fig. 9 For display Figure 7 A diagram of the state of the internal structure at this time;

[0033] Fig.10 For display Figure 8 State diagram of the internal structure at this point.

[0034] Markings in the figure: 1-coal bunker; 2-outer protective layer; 3-pressure measuring air pipe; 4-pressure sensor; 5-side sensing trigger mechanism; 501-side trigger tube; 502-sliding seat; 503-guide rod one; 504-spring one; 505-sensing touch pressure head; 6-coal seam; 7-touch-type light-emitting component; 701-bulb; 702-battery; 703-avoidance groove; 704-contact pin base; 705-guide rod two; 706-spring two; 707-electrical connection guide head; 708-V-type electric connection guide frame; 8-gas injection nozzle; 9-visual slot. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] like Figures 1 to 8 As shown, a coal bunker coal level monitoring device comprises an outer protective layer 2 installed on the outer side of the coal bunker 1 along the height direction of the coal bunker 1;

[0037] The inner cavity of the outer protective layer 2 is installed with a soft pressure measuring air pipe 3 along its height direction, and a pressure sensor 4 is installed on the outer wall of the outer protective layer 2, which extends into the pressure measuring air pipe 3 and monitors the air pressure in the pressure measuring air pipe 3; the inner cavity of the outer protective layer 2 is installed with multiple groups of linear array distributed and elastically arranged side-standing sensor trigger mechanisms 5 along its height direction, and the side-standing sensor trigger mechanisms 5 can monitor in real time whether the height of the coal seam 6 in the coal bunker 1 changes;

[0038] The side-standing sensing trigger mechanism 5 includes a side-standing trigger tube 501, which extends from the inner cavity of the outer protective layer 2 into the coal bunker 1; two sets of upper and lower slides 502 are fixed on the side of the side-standing trigger tube 501 away from the coal bunker 1, and the slide 502 is slidably connected to a guide rod 503 fixed in the inner cavity of the outer protective layer 2, and a spring 504 is mounted on the guide rod 503 to push the side-standing trigger tube 501 to move toward the coal bunker 1; a sensing touch pressure head 505 is fixed on the side of the side-standing trigger tube 501 away from the coal bunker 1.

[0039] The monitoring device senses the coal seam 6 in the coal bunker 1 through the lateral sensing trigger mechanism 5, and the lateral pressure of the coal seam 6 is transmitted to the pressure measuring air pipe 3 through the lateral sensing trigger mechanism 5, and finally monitors in real time through the pressure sensor 4 whether the height of the coal seam 6 in the coal bunker 1 changes; since the lateral sensing trigger mechanism 5 is elastically set, it can reduce the impact of the coal seam 6, and it is not easy to be deformed or damaged when impacted by the coal seam 6. It has better durability and can effectively reduce the subsequent maintenance cost.

[0040] like Figures 6 to 8 As shown, when the coal seam 6 does not touch the side trigger cylinder 501, the sensing pressure head 505 does not touch the pressure measuring gas pipe 3; when the coal seam 6 touches the side trigger cylinder 501, the sensing pressure head 505 will touch the pressure measuring gas pipe 3, and then the pressure sensor 4 can monitor the change of the air pressure in the pressure measuring gas pipe 3;

[0041] The pressure measuring gas pipe 3 is filled with inert gas through the gas injection nozzle 8 located at the bottom thereof;

[0042] Among them, the gas pressure of the inert gas is 1.2-1.5 times the external standard atmospheric pressure.

[0043] In order to ensure the stability of the gas in the pressure measuring tube 3, an inert gas, such as nitrogen, is filled in and pressurized to 1.2-1.5 times the external standard atmospheric pressure. At this time, the air pressure in the pressure measuring tube 3 is not easily affected by changes in temperature and other conditions and changes too much, thereby ensuring the stability of the gas in the pressure measuring tube 3.

[0044] like Figures 9 and 10 As shown, a touch-sensitive light-emitting component 7 is installed in the sensing touch-pressure head 505. When the sensing touch-pressure head 505 touches and presses the surface of the pressure measuring air pipe 3, the touch-sensitive light-emitting component 7 will light up;

[0045] The touch-sensitive lighting assembly 7 includes a light bulb 701, and a battery 702 is electrically connected to one side of the light bulb 701; an avoidance groove 703 is provided on the opposite side of the light bulb 701, and a stylus base frame 704 is installed in the avoidance groove 703, and the stylus base frame 704 is slidably connected to a second guide rod 705 fixed in the sensing touch pressure head 505, and a second spring 706 is mounted on the second guide rod 705 to push the stylus base frame 704 to move away from the light bulb 701; the switch of the battery 702 includes two electrical connection guide heads 707 distributed on both sides of the light bulb 701, and a V-shaped electrical connection guide frame 708 corresponding to the guide head is fixed on the stylus base frame 704;

[0046] The electrical connection lead 707 and the V-shaped electrical connection guide frame 708 are both conductive bodies; the contact pin base frame 704 is a non-conductive body;

[0047] The outer side wall of the outer protective layer 2 is provided with a plurality of visible grooves 9 distributed in a linear array along the length direction thereof, and each visible groove 9 corresponds to the position of each touch-sensitive light-emitting component 7 .

[0048] In order to conveniently and intuitively observe the coal level height of the coal bunker 1 from the outside, a touch-sensitive light-emitting component 7 is provided; when the stylus base 704 does not touch the pressure measuring air pipe 3, the electrical connection lead 707 and the V-shaped electrical connection guide frame 708 are not in contact with each other; when the stylus base 704 touches the pressure measuring air pipe 3, the electrical connection lead 707 and the V-shaped electrical connection guide frame 708 will come into contact, and then the switch of the battery 702 forms a closed circuit, and then the light bulb 701 will light up, and at this time the lit light bulb 701 can be observed through the visual slot 9. The height of the lit light bulb 701 is the height of the coal level in the coal bunker 1, so as to roughly indicate the height of the coal level.

[0049] The working principle of this utility model:

[0050] When in use, the coal seam 6 in the coal bin 1 will be transmitted to the pressure measuring air pipe 3 through the side sensing trigger mechanism 5. When transmitting pressure, the coal seam 6 first applies side pressure to the side trigger tube 501. At this time, the spring 1 504 is compressed and touches the pressure measuring air pipe 3 through the sensing pressure contact head 505. At this time, the air pressure in the pressure measuring air pipe 3 is monitored in real time through the pressure sensor 4.

[0051] Once the height of the coal level changes, the lateral pressure transmitted by the coal seam 6 to the pressure measuring gas pipe 3 through the lateral sensor trigger mechanism 5 will change; assuming that the monitored air pressure at this time is APa, and the error of the measured air pressure is designed to be nPa, when the measured air pressure is (An, A+n)Pa, it indicates that the height of the coal level has not changed; otherwise, the surface coal level height has changed.

[0052] In order to conveniently and intuitively observe the coal level height of the coal bunker 1 from the outside, a touch-sensitive lighting component 7 is also provided; when the stylus base 704 does not touch the pressure measuring air pipe 3, the electrical connection lead 707 and the V-shaped electrical connection guide frame 708 are not in contact with each other; when the stylus base 704 touches the pressure measuring air pipe 3, the electrical connection lead 707 and the V-shaped electrical connection guide frame 708 will come into contact, and then the switch of the battery 702 forms a closed circuit, and then the light bulb 701 will light up, and the lighted light bulb 701 can be observed through the visual slot 9 at this time. The height of the lighted light bulb 701 is the same as the height of the coal level in the coal bunker 1, so that the height of the coal level can be roughly indicated.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. 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 level monitoring device for a coal bunker, comprising an outer protective layer (2) installed on the outer side of the coal bunker (1) along the height direction of the coal bunker (1); Features: The inner cavity of the outer protective layer (2) is provided with a flexible pressure measuring air pipe (3) along its height direction, and a pressure sensor (4) is provided on the outer wall of the outer protective layer (2) and extends into the pressure measuring air pipe (3) and monitors the air pressure in the pressure measuring air pipe (3); the inner cavity of the outer protective layer (2) is provided with a plurality of sets of linear array distributed and elastically arranged side-standing sensing trigger mechanisms (5) along its height direction, and the side-standing sensing trigger mechanisms (5) can be used to monitor in real time whether the height of the coal seam (6) in the coal bunker (1) changes; The side-standing sensing trigger mechanism (5) comprises a side-standing trigger tube (501), the side-standing trigger tube (501) extending from the inner cavity of the outer protective layer (2) into the coal bunker (1); two sets of upper and lower slide seats (502) are fixed on the side of the side-standing trigger tube (501) away from the coal bunker (1); the slide seat (502) is slidably connected to a guide rod (503) fixed in the inner cavity of the outer protective layer (2); a spring (504) is mounted on the guide rod (503) for pushing the side-standing trigger tube (501) to move toward the coal bunker (1); a sensing touch pressure head (505) is fixed on the side of the side-standing trigger tube (501) away from the coal bunker (1).

2. The coal level monitoring device for coal bunker according to claim 1 is characterized in that: When the coal seam (6) does not touch the side trigger cylinder (501), the sensing pressure head (505) does not touch the pressure measuring gas pipe (3); when the coal seam (6) touches the side trigger cylinder (501), the sensing pressure head (505) will touch the pressure measuring gas pipe (3), and then the pressure sensor (4) can monitor the change of the air pressure of the pressure measuring gas pipe (3).

3. The coal level monitoring device for coal bunker according to claim 2 is characterized in that: The pressure measuring gas pipe (3) is filled with inert gas through a gas injection nozzle (8) located at the bottom thereof.

4. The coal level monitoring device for coal bunker according to claim 3 is characterized in that: The gas pressure of the inert gas is 1.2-1.5 times the external standard atmospheric pressure.

5. The coal level monitoring device for a coal bunker according to any one of claims 1 to 4, characterized in that: The sensing touch pressure head (505) is provided with a touch-sensitive light-emitting component (7). When the sensing touch pressure head (505) touches and presses the surface of the pressure measuring air pipe (3), the touch-sensitive light-emitting component (7) lights up. The touch-sensitive lighting assembly (7) comprises a light bulb (701), one side of which is electrically connected to a battery (702); an avoidance groove (703) is provided on the opposite side of the light bulb (701), a stylus base (704) is installed in the avoidance groove (703), the stylus base (704) is slidably connected to a second guide rod (705) fixed in a sensing touch head (505), the second guide rod (705) is sleeved with a second spring (706) for pushing the stylus base (704) to move away from the light bulb (701); the switch of the battery (702) comprises two electrical connection guide heads (707) distributed on both sides of the light bulb (701), and a V-shaped electrical connection guide head (708) corresponding to the guide head is fixed on the stylus base (704).

6. The coal level monitoring device for coal bunker according to claim 5, characterized in that: The electrical connection lead (707) and the V-shaped electrical connection guide frame (708) are both electrical conductors; the contact pin base frame (704) is a non-electrical conductor.

7. The coal level monitoring device for coal bunker according to claim 6, characterized in that: When the stylus base (704) does not touch the pressure measuring air pipe (3), the electrical connection lead (707) and the V-shaped electrical connection guide frame (708) are not in contact with each other; when the stylus base (704) touches the pressure measuring air pipe (3), the electrical connection lead (707) and the V-shaped electrical connection guide frame (708) come into contact, and then the switch of the battery (702) forms a closed circuit, and the light bulb (701) lights up.

8. The coal level monitoring device for coal bunker according to claim 7, characterized in that: The outer side wall of the outer protective layer (2) is provided with a plurality of visible grooves (9) distributed in a linear array along its length direction, and each visible groove (9) corresponds to the position of each touch-sensitive light-emitting component (7).

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