Coal bunker temperature sensing alarm safety device

Abstract

The utility model discloses a coal bunker temperature sensing alarm safety device, and belongs to the technical field of fuel power plants. A coal bunker temperature sensing alarm safety device comprises a coal bunker and an alarm host. The alarm host is installed outside the coal bunker. The device further comprises a cooling device, a smoke probe, a temperature measuring rod and a second temperature measuring sensor. The cooling device comprises a water spraying device and an electromagnetic valve; the electromagnetic valve is communicated with the water spraying device through a pipeline; in a normal state, the electromagnetic valve is in a closed state; the smoke probe is located at the upper end of the middle of the coal bunker and detachably connected with the upper end of the middle of the coal bunker. The temperature measuring rod extends to the lower end of the coal bunker from the upper end of the coal bunker and penetrates through a vertical inner cavity of the coal bunker; the outer wall of the temperature measuring rod is provided with a plurality of circumferentially arranged first temperature measuring sensors from top to bottom at equal intervals. The second temperature measuring sensors are circumferentially arranged on the inner wall of the coal bunker at equal intervals and fixedly connected with the inner wall of the coal bunker. The internal temperature of the coal bunker can be detected in multiple directions, and hidden dangers in the coal bunker are analyzed through the smoke probe.

Description

Technical Field

[0001] The utility model belongs to the technical field of fuel power plants, and more specifically, relates to a temperature-sensing alarm safety device for a coal bunker. Background Art

[0002] With the rapid development of the economy, the construction of large-scale coal storage yards in China is increasing day by day. Compared with traditional open-air coal storage, the enclosed coal storage in the yard can effectively reduce dust pollution and reduce the loss of coal during storage. However, there are relatively large potential safety hazards in the existing technology of using the yard for enclosed coal storage. In practice, due to the long storage time of flammable coal types, the stored coal heats up, which may lead to spontaneous combustion, and even cause an explosion due to the generation of combustible gases caused by the spontaneous combustion of the coal pile. To prevent such situations from occurring, it is particularly important to monitor the temperature inside the circular coal bunker in real time and provide timely and effective safety warnings.

[0003] The existing coal storage bins do not have the functions of integrated visual monitoring and automatic alarm such as flue gas, temperature, and material level monitoring. At the same time, there are few low-energy cooling measures and inerting explosion-proof measures during the coal storage process. Once the coal body has a tendency to spontaneous combustion, it cannot be known in the first time, so as to take effective fire and explosion prevention measures to minimize the losses. Moreover, the coal temperature at the lower end or the center of most V-shaped coal bunkers cannot be accurately detected, resulting in fire hazards in the middle or lower part of the coal bunker. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a temperature-sensing alarm safety device for a coal bunker, which can realize multi-directional detection of the temperature inside the coal bunker and analyze the potential hazards inside the coal bunker by using a smoke detector.

[0005] A temperature-sensing alarm safety device for a coal bunker of the utility model includes a coal bunker and an alarm host; the alarm host is installed outside the coal bunker; it further includes a cooling device, a smoke detector, a temperature measuring rod, and a second temperature sensor; the cooling device includes a water spraying device and a solenoid valve, and the solenoid valve is connected to the water spraying device through a pipeline; under normal conditions, the solenoid valve is in a closed state; the smoke detector is located at the upper end of the middle part of the coal bunker, and the smoke detector is detachably connected to the upper end of the middle part of the coal bunker; the temperature measuring rod extends from the upper end of the coal bunker to the lower end of the coal bunker, passing through the inner cavity of the coal bunker in the vertical direction; a plurality of first temperature sensors arranged in a circumferential array at equal intervals are provided on the outer wall of the temperature measuring rod from top to bottom; the second temperature sensors are arranged in a circumferential array at equal intervals on the inner wall of the coal bunker, and the second temperature sensors are fixedly connected to the inner wall of the coal bunker.

[0006] As a further improvement of the utility model, an alarm is further provided outside the alarm host, the alarm is installed outside the coal bunker, the alarm is fixedly connected to the outside of the coal bunker, and the alarm is electrically connected to the output end of the alarm host.

[0007] As a further improvement of the present utility model, the output end of the alarm host is electrically connected to the solenoid valve, the smoke detector, the first temperature sensor, and the second temperature sensor respectively.

[0008] As a further improvement of the present utility model, the water spraying device includes a nozzle and a water storage tank. The nozzle is in communication with the water storage tank. The solenoid valve is located between the nozzle and the water storage tank. The nozzle, the water storage tank, and the solenoid valve are in communication with each other through connecting pipes.

[0009] As a further improvement of the present utility model, a coal bunker inlet is provided at the upper end of the coal bunker, and the coal bunker inlet is in communication with the inner cavity of the coal bunker; a coal bunker outlet is provided at the lower end of the coal bunker. The coal bunker outlet is closed under normal conditions, and the coal bunker outlet is in communication with the inner cavity of the coal bunker.

[0010] As a further improvement of the present utility model, when the processor of the alarm host simultaneously generates signals of high temperature and high smoke concentration, the alarm host starts to alarm. After receiving the signal from the alarm host, the solenoid valve opens, and the water in the water storage tank extinguishes the fire in the raw coal bunker through the nozzle until the temperatures of the first temperature measuring sensor and the second temperature sensor reach the set normal values and there is no alarm signal from the smoke detector, then the fire extinguishing device stops working.

[0011] As a further improvement of the present utility model, the alarm host is also electrically connected to a wireless module, and the wireless module is wirelessly connected to the client to enable the hidden dangers in the coal bunker and the values detected by the smoke detector, the first temperature sensor, and the second temperature sensor to be reflected in real time.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] Compared with the prior art, the present utility model can also detect the temperature of the coal in the central part of the coal bunker. At the same time, a cooling device is provided, and real-time monitoring is carried out on both temperature and smoke to cool the coal bunker at any time to prevent the spread of fire. In the prior art, most small coal bunkers are V-shaped, and it is not easy to detect the temperature of the coal in the middle of the V-shaped coal bunker, so that the hidden dangers in the coal bunker in the prior art cannot be completely solved. Through the temperature measuring rod in this embodiment and being electrically connected to the alarm host to control the cooling device in real time, the storage environment inside the coal bunker is ensured to be safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the schematic plan structure diagram of the coal bunker of the present utility model;

[0015] Figure 2 is the schematic system structure diagram of the alarm device of the present utility model;

[0016] Figure 3 is the schematic system structure diagram of the alarm device in Embodiment 2 of the present utility model.

[0017] Description of reference numerals in the figure:

[0018] Coal bunker 1, coal bunker inlet 11, coal bunker outlet 12, cooling device 2, spray head 21, water storage tank 22, solenoid valve 23, connecting pipe 24, smoke detector 3, temperature measuring rod 4, first temperature sensor 41, second temperature sensor 5, alarm host 6, alarm 61. Specific implementation mode

[0019] Specific embodiment 1: Please refer to Figure 1-2 A temperature-sensing alarm safety device for a coal bunker, comprising a coal bunker 1, a cooling device 2, a smoke detector 3, a temperature measuring rod 4, a temperature sensor 5 and an alarm host 6.

[0020] A coal bunker inlet 11 is provided at the upper end of the coal bunker 1, and the coal bunker inlet 11 communicates with the inner cavity of the coal bunker 1. A coal bunker outlet 12 is provided at the lower end of the coal bunker 1. The coal bunker outlet 12 is closed under normal conditions, and the coal bunker outlet 12 communicates with the inner cavity of the coal bunker 1.

[0021] The cooling device 2 is located on both sides of the upper end of the coal bunker 1. The cooling device 2 penetrates through the upper wall of the coal bunker 1 and is placed inside the inner cavity of the coal bunker 1. The cooling device 2 includes a spray head 21, a water storage tank 22, a solenoid valve 23 and a connecting pipe 24. The spray head 21 communicates with the water storage tank 22. The solenoid valve 23 is located between the spray head 21 and the water storage tank 22. The spray head 21, the water storage tank 22 and the solenoid valve 23 communicate with each other through the connecting pipe 24. Under normal conditions, the solenoid valve 23 is in a closed state. The solenoid valve 23 is used to convey the stored water in the water storage tank 22 to the spray head 21 to complete the cooling operation of the cooling device 2.

[0022] The smoke detector 3 is located at the upper end of the middle part of the coal bunker 1. The smoke detector 3 is detachably connected to the upper end of the middle part of the coal bunker 1. The smoke detector 3 is used to detect the smoke content in the coal bunker 1 to prevent the coal in the coal bunker 1 from burning. The flue gas detector 3 transmits the real-time flue gas concentration signal to the processor of the alarm host 6 through the detection circuit. If there are no less than two sets of data among all the values transmitted back by all the flue gas detectors 3 greater than the set value of 20% LEL and the continuous duration exceeds 1 minute, or a certain set of data is greater than the set value of 20% LEL and the continuous duration exceeds 30 seconds, the processor generates a high flue gas concentration signal, and displays the high flue gas concentration signal on the liquid crystal display module of the alarm host 6, and displays the analog quantity value of the highest concentration point among all the flue gas detectors 3. When the processor of the alarm host 6 generates high temperature and high flue gas concentration signals at the same time, the alarm 61 is started to alarm. In this way, the solenoid valve 23 on the connecting pipe 24 is opened after receiving the signal from the alarm host 6, and the water in the water storage tank 22 extinguishes the fire of the original coal bunker through the spray head 21 until the temperatures of the first temperature sensor 41 and the second temperature sensor 5 reach the set normal values and there is no alarm signal from the flue gas detector, it is considered that the suffocation fire extinguishing has been completed and the fire extinguishing device stops working. The whole process is automatically completed without manual intervention.

[0023] The temperature measuring rod 4 is located in the middle of the coal bunker 1. The temperature measuring rod 4 extends from the upper end to the lower end of the coal bunker 1, so that the temperature measuring rod 4 can completely measure the temperature distribution from top to bottom in the middle of the coal bunker 1. A plurality of first temperature sensors 41 arranged in a circumferential pattern are equidistantly provided on the outer wall of the temperature measuring rod 4 from top to bottom. The first temperature sensors 41 are fixedly connected to the temperature measuring rod 4.

[0024] The second temperature sensors 5 are arranged in an equidistant circumferential pattern on the inner wall of the coal bunker 1. The second temperature sensors 5 are fixedly connected to the inner wall of the coal bunker 1. The second temperature sensors 5 are used to detect the coal temperature at the inner wall of the coal bunker 1.

[0025] The first temperature sensors 41 and the second temperature sensors 5 send real-time temperature signals to the processor of the alarm host 6 through a detection circuit. If there are no less than 2 groups of data among all the values transmitted back by the first temperature sensors 41 and the second temperature sensors 5 that are greater than the set value of 200 °C and the duration exceeds 1 minute, the processor generates a high temperature signal, and displays the high temperature signal on the liquid crystal display module of the alarm host 6, and displays the values of the highest temperature points of all the first temperature sensors 41 and the second temperature sensors 5.

[0026] The alarm host 6 is located outside the coal bunker 1. The alarm host 6 is fixedly connected to the outside of the coal bunker 1. An alarm 61 is further provided on the outside of the alarm host 6. The alarm 61 is installed on the outside of the coal bunker 1. The alarm 61 is fixedly connected to the outside of the coal bunker 1. The alarm 61 is electrically connected to the output end of the alarm host 6 to control the alarm 61 to give an alarm. The output end of the alarm host 6 is electrically connected to the solenoid valve 23, the smoke detector 3, the first temperature sensor 41 and the second temperature sensor 5 respectively.

[0027] Working principle:

[0028] When the present utility model is implemented, the temperature and smoke conditions in the coal bunker are respectively monitored by the smoke detector, the first temperature sensor and the second temperature sensor. When exceeding the thresholds set in the alarm host by the smoke detector, the first temperature sensor and the second temperature sensor, the alarm host first sends a signal to the alarm to drive the alarm to give an alarm; at the same time, a signal is sent to the solenoid valve to drive the solenoid valve to open the opening of the water storage tank and supply water to the sprinkler head, so as to prevent the spread of fire or potential fire hazards in the coal bunker in time.

[0029] Specific embodiment two: Please refer to Figure 3 A temperature-sensing alarm safety device for a coal bunker, which is different from the first specific embodiment in that the alarm host 6 is also electrically connected to a wireless module, and the wireless module is wirelessly connected to a client, so that the hidden dangers in the coal bunker 1 and the values detected by the smoke detector 3, the first temperature sensor 41 and the second temperature sensor 5 are reflected in real time, which is convenient for manual observation and intervention.

Claims

1. A temperature-sensing alarm safety device for a coal bunker, comprising a coal bunker (1) and an alarm host (6); the alarm host (6) is installed outside the coal bunker (1); characterized in that: It also includes a cooling device (2), a smoke detector (3), a temperature measuring rod (4) and a second temperature sensor (5); the cooling device (2) includes a water spraying device and an electromagnetic valve (23), and the electromagnetic valve (23) and the water spraying device are interconnected through a pipeline; under normal conditions, the electromagnetic valve (23) is in a closed state; the smoke detector (3) is located at the upper middle part of the coal bunker (1), and the smoke detector (3) is detachably connected to the upper middle part of the coal bunker (1); the temperature measuring rod (4) extends from the upper end of the coal bunker (1) to the lower end of the coal bunker (1), penetrating the inner cavity of the coal bunker (1) in the vertical direction; a plurality of first temperature sensors (41) arranged in a circumferential pattern are equidistantly provided on the outer wall of the temperature measuring rod (4) from top to bottom; the second temperature sensors (5) are arranged in a circumferential pattern at equal intervals on the inner wall of the coal bunker (1), and the second temperature sensors (5) are fixedly connected to the inner wall of the coal bunker (1).

2. The temperature-sensing alarm safety device for a coal bunker according to claim 1, characterized in that: An alarm (61) is also provided outside the alarm host (6), the alarm (61) is installed on the outside of the coal bunker (1), the alarm (61) is fixedly connected to the outside of the coal bunker (1), and the alarm (61) is electrically connected to the output end of the alarm host (6).

3. The temperature-sensing alarm safety device for a coal bunker according to claim 2, characterized in that: The output end of the alarm host (6) is electrically connected to the electromagnetic valve (23), the smoke detector (3), the first temperature sensor (41) and the second temperature sensor (5) respectively.

4. A temperature-sensing alarm safety device for a coal bunker according to claim 1, characterized in that: The water spraying device includes a nozzle (21) and a water storage tank (22), the nozzle (21) is interconnected with the water storage tank (22), the electromagnetic valve (23) is located between the nozzle (21) and the water storage tank (22), and the nozzle (21), the water storage tank (22) and the electromagnetic valve (23) are interconnected through a connecting pipeline (24).

5. A temperature-sensing alarm safety device for a coal bunker according to claim 1, characterized in that: A coal bunker inlet (11) is provided at the upper end of the coal bunker (1), and the coal bunker inlet (11) is interconnected with the inner cavity of the coal bunker (1); a coal bunker outlet (12) is provided at the lower end of the coal bunker (1), the coal bunker outlet (12) is in a closed state under normal conditions, and the coal bunker outlet (12) is interconnected with the inner cavity of the coal bunker (1).

6. The temperature-sensing alarm safety device for a coal bunker according to claim 1, wherein: When the processor of the alarm host (6) simultaneously generates signals of high temperature and high flue gas concentration, the alarm host (6) starts to alarm. After receiving the signal from the alarm host (6), the electromagnetic valve (23) opens, and the water in the water storage tank (22) extinguishes the fire of the original coal bunker through the nozzle (21). When the temperatures of the first temperature sensor (41) and the second temperature sensor (5) reach the set normal values and there is no alarm signal from the flue gas detector, the fire extinguishing device stops working.

7. A temperature-sensing alarm safety device for a coal bunker according to claim 1, characterized in that: The alarm host (6) is also electrically connected to a wireless module, and the wireless module is wirelessly connected to a client, so as to reflect the hidden dangers in the coal bunker (1) and the values detected by the smoke detector (3), the first temperature sensor (41) and the second temperature sensor (5) in real time.

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