Safety device

Abstract

The invention provides a safety device which comprises an induction system and a control module, the induction system comprises a temperature sensor and a control module, and the temperature sensor is arranged in a blast hole to monitor the real-time temperature in the blast hole; the temperature sensor is in communication connection with the control module, so that the control module receives the real-time temperature sent by the temperature sensor and compares the real-time temperature with the first preset temperature and the second preset temperature; wherein the first preset temperature is higher than the second preset temperature; the water injection system is in communication connection with the control module, and when the real-time temperature is larger than the first preset temperature, the control module controls the water injection system to inject water into the blast hole; and when the real-time temperature is smaller than the second preset temperature, the control module controls the water injection system to stop injecting water into the blast hole. According to the safety device, the problem that in the high-temperature blasting operation in a fire area in the prior art, the safety of blasting equipment is low is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of blasting equipment, in particular to a safety device. Background Art

[0002] In high-temperature blasting operations in fire zones, reasonable blasting equipment and safety techniques are prerequisites.

[0003] However, even under this premise, there are still huge safety hazards due to the harsh environment. If the high temperature generated in the fire area makes the explosives reach thermal sensitivity, the explosives will explode prematurely. Even if the blasting temperature is not reached, the high temperature can still cause the explosives to thermally decompose and lose their explosiveness, affecting the overall effect of the blasting operation, thereby threatening the lives of the operators in the blasting work. Summary of the invention

[0004] The main purpose of the present invention is to provide a safety device to solve the problem of low safety of blasting equipment in high-temperature blasting operations in fire areas in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a safety device, including: a sensing system, including a temperature sensor and a control module, the temperature sensor is used to be arranged in a blasthole to monitor the real-time temperature in the blasthole; the temperature sensor is communicatively connected to the control module, so that the control module receives the real-time temperature sent by the temperature sensor and compares the real-time temperature with a first preset temperature and a second preset temperature; wherein the first preset temperature is greater than the second preset temperature; a water injection system, which is communicatively connected to the control module, when the real-time temperature is greater than the first preset temperature, the control module controls the water injection system to inject water into the blasthole; when the real-time temperature is less than the second preset temperature, the control module controls the water injection system to stop injecting water into the blasthole.

[0006] Furthermore, the safety device also includes: a structure inside the blasthole, including a borehole wall tube and explosives arranged in the borehole wall tube, the borehole wall tube is used to be arranged in the blasthole and fit with the inner wall of the blasthole; a tubular structure, at least part of the tubular structure is arranged in the borehole wall tube, and one end of the tubular structure extends into the explosive setting; wherein the water injection system includes a water outlet structure for water injection, and the water outlet structure is arranged in the tubular structure.

[0007] Furthermore, the water outlet structure has a water inlet for water intake and a plurality of water outlets for water injection, and the plurality of water outlets are evenly arranged around the circumference of the water outlet structure.

[0008] Furthermore, the water injection system includes a water tank, a water pipe and a control valve, one end of the water pipe is connected to the water tank, and the other end of the water pipe is connected to the water outlet structure. The control valve is arranged on the water pipe and is communicatively connected to the control module so that the control module controls the control valve to open or close.

[0009] Furthermore, the temperature sensor is a fiber grating temperature sensor, the fiber grating temperature sensor is inserted into the tubular structure and the explosive, and the fiber grating temperature sensor is arranged along the axial direction of the blasthole.

[0010] Furthermore, the sensing system also includes a fiber Bragg grating demodulator, the fiber Bragg grating demodulator includes a control module, and the fiber Bragg grating temperature sensor is connected to the fiber Bragg grating demodulator.

[0011] Furthermore, one end of the fiber grating temperature sensor extends to the bottom of the explosive, and the other end of the fiber grating temperature sensor extends out of the tubular structure and is connected to the fiber grating demodulator.

[0012] Furthermore, the safety device also includes: a detonation system, including a detonating cord, a one-way detonating tube and a powder roll, wherein a powder roll is provided at one end of the detonating cord and extends through the tubular structure to the bottom end of the explosive; the one-way detonating tube is provided on the detonating cord and is located between the two ends of the detonating cord.

[0013] Furthermore, the structure inside the blasthole also includes a rock powder layer, which is arranged inside the hole wall tube and below the explosive.

[0014] Furthermore, one end of the hole wall tube extends to the bottom of the blasthole, and the second end of the hole wall tube is flush with the muzzle of the blasthole; or, the structure inside the blasthole includes a filling layer arranged in the hole wall tube, the filling layer is located on the top of the explosive, the tubular structure is penetrated in the filling layer, and the other end of the tubular structure protrudes from the filling layer.

[0015] The technical solution of the present invention is applied, and the safety device includes a sensing system and a water injection system. The high temperature environment causes the temperature in the blasthole to rise, and the temperature sensor monitors the actual temperature in real time. If the actual temperature reaches the first preset temperature of the control module, the control module transmits a signal to the water injection system, and water is injected into the explosive in the blasthole, thereby achieving the effect of lowering the temperature and rendering the explosive ineffective; if the actual temperature reaches the second preset temperature of the control module, the control module transmits a signal to the water injection system to stop water injection to avoid excessive water injection that affects the blasting operation. It can be seen that the safety device solves the problem of low safety of blasting equipment in high-temperature blasting operations in fire areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram showing an embodiment of a safety device according to the present invention is shown;

[0018] Figure 2 A schematic diagram showing a water outlet structure of a safety device according to the present invention is shown;

[0019] Figure 3 A first partial enlarged view of the safety device according to the present invention is shown;

[0020] Figure 4 A second partial enlarged view of the safety device according to the present invention is shown.

[0021] The above drawings include the following reference numerals:

[0022] 1. Detonation system; 11. Detonating cord; 111. Explosive coil; 12. One-way detonator;

[0023] 2. Sensing system; 21. Tubular structure; 22. Temperature sensor; 221. Fiber Bragg grating demodulator;

[0024] 23. Water outlet structure; 231. Water inlet; 232. Water outlet;

[0025] 3. Water injection system; 31. Water tank; 32. Water pipe; 33. Control valve;

[0026] 4. Structure inside the blasthole; 41. Explosives; 42. Borehole wall tube; 43. Rock powder layer; 44. Filling layer. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0030] The present invention provides a safety device, please refer to Figures 1 to 4, including: a sensing system 2, including a temperature sensor 22 and a control module, the temperature sensor 22 is used to be set in the blasthole to monitor the real-time temperature in the blasthole; the temperature sensor 22 is communicatively connected with the control module, so that the control module receives the real-time temperature sent by the temperature sensor 22 and compares the real-time temperature with a first preset temperature and a second preset temperature; wherein the first preset temperature is greater than the second preset temperature; a water injection system 3, communicatively connected with the control module, when the real-time temperature is greater than the first preset temperature, the control module controls the water injection system 3 to inject water into the blasthole; when the real-time temperature is less than the second preset temperature, the control module controls the water injection system 3 to stop injecting water into the blasthole.

[0031] The safety device of the present invention includes a sensing system 2 and a water injection system 3. The high temperature environment causes the temperature in the blasthole to rise. The temperature sensor 22 monitors the actual temperature in real time. If the actual temperature reaches the first preset temperature of the control module, the control module transmits a signal to the water injection system 3, and water is injected into the explosive in the blasthole, thereby achieving the effect of lowering the temperature to render the explosive ineffective; if the actual temperature reaches the second preset temperature of the control module, the control module transmits a signal to the water injection system 3 to stop water injection to avoid excessive water injection that affects the blasting operation. It can be seen that the safety device solves the problem of low safety of blasting equipment in high-temperature blasting operations in fire areas.

[0032] In this embodiment, the safety device also includes: a structure 4 inside the blasthole, including a borehole wall tube 42 and an explosive 41 arranged in the borehole wall tube 42, the borehole wall tube 42 is used to be arranged in the blasthole and fit with the inner wall of the blasthole; a tubular structure 21, at least a part of the tubular structure 21 is arranged in the borehole wall tube 42, and one end of the tubular structure 21 extends into the explosive 41 arrangement; wherein the water injection system 3 includes a water outlet structure 23 for water injection, and the water outlet structure 23 is arranged in the tubular structure 21.

[0033] In specific implementation, one end of the tubular structure 21 is inserted into the explosive 41 to facilitate the diffusion of water in the explosive, thereby achieving the effect of inactivating the explosive. Moreover, the length of the one end of the tubular structure 21 inserted into the explosive 41 is relatively small.

[0034] Specifically, the tubular structure 21 is made of high temperature resistant and flame retardant tubular material; the outer wall of the hole wall tube 42 is in contact with the inside of the blast hole, and the inner wall of the hole wall tube 42 is wrapped around the outside of the explosive.

[0035] In this embodiment, the water outlet structure 23 has a water inlet 231 for water intake and a plurality of water outlets 232 for water injection, and the plurality of water outlets 232 are evenly arranged around the circumference of the water outlet structure 23. It can be seen that the water injection form is a diffuse spraying form toward the wall of the tubular structure 21, which facilitates the water to diffuse and contact with the explosive 41, thereby achieving the effect of rendering the explosive 41 ineffective.

[0036] In this embodiment, the water injection system 3 includes a water tank 31, a water pipe 32 and a control valve 33. One end of the water pipe 32 is connected to the water tank 31, and the other end of the water pipe 32 is connected to the water outlet structure 23. The control valve 33 is arranged on the water pipe 32 and is communicatively connected to the control module so that the control module controls the control valve 33 to be opened or closed.

[0037] Specifically, the control valve 33 is a solenoid valve.

[0038] Specifically, the temperature sensor 22 is a fiber Bragg grating temperature sensor, which is inserted into the tubular structure 21 and the explosive 41 , and arranged along the axial direction of the blast hole.

[0039] Specifically, the sensing system 2 further includes a fiber Bragg grating demodulator 221, the fiber Bragg grating demodulator 221 includes a control module, and the fiber Bragg grating temperature sensor is connected to the fiber Bragg grating demodulator 221. In specific implementation, the fiber Bragg grating temperature sensor is connected to the corresponding channel of the fiber Bragg grating demodulator 221.

[0040] Specifically, the fiber Bragg grating demodulator 221 is dustproof, vibration-proof, and explosion-proof to avoid the impact of explosions on it.

[0041] In specific implementation, the fiber grating demodulator has a built-in control module, which transmits a signal to the control valve 33. According to the characteristics of the explosive, a temperature lower than that required for the explosive to take effect is preset, which is set as a high temperature threshold, that is, a first preset temperature. When the first preset temperature is reached, the control module transmits a signal to the control valve 33, and the water injection system starts to inject water; another low temperature threshold is set, that is, a second preset temperature. When the second preset temperature is reached, the control module transmits a signal to the control valve 33 to stop the water injection system from working, so as to avoid excessive water injection and affect the blasting operation. Among them, the control valve 33 has a built-in receiving module.

[0042] Specifically, one end of the fiber Bragg grating temperature sensor extends to the bottom of the explosive 41 , and the other end of the fiber Bragg grating temperature sensor extends out of the tubular structure 21 and is connected to the fiber Bragg grating demodulator 221 .

[0043] In this embodiment, the safety device also includes: a detonation system 1, including a detonating cord 11, a one-way detonating tube 12 and a powder roll 111, wherein the powder roll 111 is provided at one end of the detonating cord 11 and extends through the tubular structure 21 to the bottom end of the explosive 41; the one-way detonating tube 12 is provided on the detonating cord 11 and is located between the two ends of the detonating cord 11.

[0044] In specific implementation, the detonating cord 11 is inserted from the top of the tubular structure 21, passing through the entire tubular structure 21, and one end of the detonating cord 11 provided with the medicine roll 111 extends into the bottom end of the explosive 41, so as to detonate the explosive 41. The one-way detonator 12 prevents the bombardment wave from being transmitted along the detonating cord 11 and causing premature explosion of other blast holes.

[0045] In this embodiment, the blasthole internal structure 4 further includes a rock powder layer 43, which is arranged in the hole wall tube 42 and below the explosive 41. In specific implementation, the rock powder is filled at the bottom of the explosive to form a rock powder layer, which has high temperature resistance and flame retardancy, and prevents the heat source at the bottom of the hole from diffusing to the explosive.

[0046] Specifically, one end of the hole wall tube 42 extends to the bottom of the blast hole, and the second end of the hole wall tube 42 is flush with the muzzle of the blast hole.

[0047] Specifically, the blasthole internal structure 4 includes a filling layer 44 disposed in a hole wall tube 42, the filling layer 44 is located on the top of the explosive 41, the tubular structure 21 is penetrated in the filling layer 44, and the other end of the tubular structure 21 protrudes from the filling layer 44. In addition, the other end of the tubular structure 21 protrudes from the muzzle of the blasthole.

[0048] Specifically, the tubular structure 21 is disposed at the center of the bore wall tube 42, that is, the axes of the two coincide with each other.

[0049] In other embodiments, Figure 4 As shown, the safety device includes a plurality of temperature sensors 22 , each of which is disposed in the tubular structure 21 or between the tubular structure 21 and the bore wall tube 42 ; wherein the real-time temperature is the highest temperature monitored by the plurality of temperature sensors 22 .

[0050] The present invention provides a safety device for instant failure of high-temperature blasthole charges, which solves the following problem: during high-temperature blasting operations in a fire zone, if the high temperature generated in the fire zone causes the explosive to reach thermal sensitivity, the explosive will explode prematurely, and the detonator can still be subjected to high temperature to cause thermal decomposition of the explosive and lose its explosiveness, thereby affecting the overall effect of the blasting operation and threatening the life safety of the operators performing the blasting work.

[0051] In specific implementation, the sensing system has high temperature resistance and flame retardancy, which is convenient for monitoring temperature and conducive to water injection and cooling after an alarm.

[0052] In specific implementation, the hole wall tube 42 and the rock powder layer have high temperature resistance and flame retardancy, which prevent the high temperature environment from causing the explosive to heat up and explode.

[0053] During specific implementation, the probe of the fiber grating temperature sensor is placed in the blast hole.

[0054] In specific implementation, the explosive 41 is placed inside the blasthole inner structure 4 using a coupled charge, and is wrapped around the outside of the tubular structure 21, buried at the lower end of the blasthole, and filled at the upper end.

[0055] In specific implementation, the inner structure 4 of the blasthole is to only add high temperature resistant flame retardant material to the inner wall of the blasthole, and the bottom of the blasthole is not provided with high temperature resistant flame retardant material which is directly connected to the bottom end of the blasthole.

[0056] The beneficial effects of the safety device of the present invention are as follows: by using a fiber grating temperature sensor to extend into the blasthole to monitor the ambient temperature of the explosive and triggering the control module to control the water injection of the water pipe, the temperature of the blasthole is reduced, premature explosion of the explosive is avoided, and thermal decomposition of the explosive is avoided, resulting in loss of blasting performance and refusal to explode, thereby ensuring the life safety of the workers in the blasting work.

[0057] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0058] The safety device of the present invention includes a sensing system 2 and a water injection system 3. The high temperature environment causes the temperature in the blasthole to rise. The temperature sensor 22 monitors the actual temperature in real time. If the actual temperature reaches the first preset temperature of the control module, the control module transmits a signal to the water injection system 3, and water is injected into the explosive in the blasthole, thereby achieving the effect of lowering the temperature to render the explosive ineffective; if the actual temperature reaches the second preset temperature of the control module, the control module transmits a signal to the water injection system 3 to stop water injection to avoid excessive water injection that affects the blasting operation. It can be seen that the safety device solves the problem of low safety of blasting equipment in high-temperature blasting operations in fire areas.

[0059] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0060] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A safety device, characterized in that: include: The sensing system (2) comprises a temperature sensor (22) and a control module, wherein the temperature sensor (22) is arranged in a blasthole to monitor the real-time temperature in the blasthole; the temperature sensor (22) is communicatively connected with the control module so that the control module receives the real-time temperature sent by the temperature sensor (22) and compares the real-time temperature with a first preset temperature and a second preset temperature; wherein the first preset temperature is greater than the second preset temperature; The water injection system (3) is communicatively connected with the control module. When the real-time temperature is greater than the first preset temperature, the control module controls the water injection system (3) to inject water into the blasthole; when the real-time temperature is less than the second preset temperature, the control module controls the water injection system (3) to stop injecting water into the blasthole.

2. The safety device according to claim 1, characterized in that: The safety device also includes: The blast hole internal structure (4) comprises a blast hole wall tube (42) and explosive (41) arranged in the blast hole wall tube (42), wherein the blast hole wall tube (42) is used to be arranged in the blast hole and fit with the inner wall of the blast hole; A tubular structure (21), at least a portion of the tubular structure (21) is disposed in the hole wall tube (42), and one end of the tubular structure (21) extends into the explosive (41); Wherein, the water injection system (3) comprises a water outlet structure (23) for water injection, and the water outlet structure (23) is arranged in the tubular structure (21).

3. The safety device according to claim 2, characterized in that: The water outlet structure (23) comprises a water inlet (231) for water intake and a plurality of water outlets (232) for water injection, and the plurality of water outlets (232) are evenly arranged around the circumference of the water outlet structure (23).

4. The safety device according to claim 2, characterized in that: The water injection system (3) comprises a water tank (31), a water pipe (32) and a control valve (33); one end of the water pipe (32) is connected to the water tank (31), and the other end of the water pipe (32) is connected to the water outlet structure (23); the control valve (33) is arranged on the water pipe (32) and is communicatively connected to the control module so that the control module controls the control valve (33) to be opened or closed.

5. The safety device according to claim 2, characterized in that: The temperature sensor (22) is a fiber Bragg grating temperature sensor, the fiber Bragg grating temperature sensor is inserted into the tubular structure (21) and the explosive (41), and the fiber Bragg grating temperature sensor is arranged along the axial direction of the blast hole.

6. The safety device according to claim 5, characterized in that: The sensing system (2) further comprises a fiber Bragg grating demodulator (221), the fiber Bragg grating demodulator (221) comprises the control module, and the fiber Bragg grating temperature sensor is connected to the fiber Bragg grating demodulator (221).

7. The safety device according to claim 6, characterized in that: One end of the fiber grating temperature sensor extends to the bottom of the explosive (41), and the other end of the fiber grating temperature sensor extends out of the tubular structure (21) and is connected to the fiber grating demodulator (221).

8. The safety device according to any one of claims 2 to 7, characterized in that The safety device also includes: The detonation system (1) comprises a detonating cord (11), a one-way detonating tube (12) and a powder roll (111); the powder roll (111) is arranged at one end of the detonating cord (11) and passes through the tubular structure (21) and extends to the bottom end of the explosive (41); the one-way detonating tube (12) is arranged on the detonating cord (11) and is located between the two ends of the detonating cord (11).

9. The safety device according to any one of claims 2 to 7, characterized in that: The blasthole internal structure (4) further comprises a rock powder layer (43), wherein the rock powder layer (43) is arranged in the hole wall tube (42) and is located below the explosive (41).

10. The safety device according to claim 2, characterized in that: One end of the hole wall tube (42) extends to the bottom of the blast hole, and the second end of the hole wall tube (42) is flush with the muzzle of the blast hole; or The structure (4) inside the blasthole includes a filling layer (44) arranged inside the hole wall tube (42), the filling layer (44) is located on the top of the explosive (41), the tubular structure (21) is inserted into the filling layer (44), and the other end of the tubular structure (21) protrudes from the filling layer (44).

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