Underground rescue equipment for valve pit

Abstract

The invention provides underground rescue equipment for a valve well, and belongs to the technical field of underground operation of valve wells. The equipment comprises an equipment main body arranged at the wellhead of the valve well, a multifunctional helmet worn by a person going into the well, and a controller, wherein the multifunctional helmet is provided with a speed and gas sensor. The overall weight of the underground rescue equipment is only less than 40 kg, two postures of operation and storage are set, the underground rescue equipment can be manually carried to a valve well in a complex operation environment, and the capacity of adapting to the working environment is high. Through an advanced underground and aboveground linkage system, real-time interaction of video, voice and underground environment detection data is realized, dynamic connection with a winch mechanism is realized, and the safety of underground operating personnel is ensured. The two sets of independent lifting speed monitoring systems can confirm that the equipment can stop acting immediately when personnel or the equipment is stuck underground.

Description

Technical Field

[0001] The invention relates to the technical field of valve well downhole operation, in particular to downhole rescue equipment for valve wells. Background Art

[0002] In the field of valve well underground operation technology, nowadays, urban underground pipelines have become increasingly mature, and the cleaning, repair and maintenance of urban underground pipelines are also an important part of urban municipal administration. However, due to the long-term confined space in the depths of the valve well, coupled with possible leakage or methane, harmful gases such as methane and hydrogen sulfide often accumulate, and the oxygen content is insufficient, which seriously threatens the safety of underground workers. The rescue device can successfully rescue the trapped personnel from the well by lowering the rescue equipment, thereby saving the lives of the trapped personnel. However, the communication conditions in the well are poor, and the communication equipment cannot achieve efficient and clear communication between the well and the ground, resulting in untimely information transmission during the rescue process, which increases the complexity of the rescue. Valve wells are often accompanied by high temperatures, corrosive gases, hydrogen sulfide and other toxic gases, which pose a serious threat to the health of the rescued personnel. At the same time, if the trapped personnel encounter an accident during the rescue, the operating status of the rescue equipment cannot be adjusted well, which will also threaten the lives of the rescued personnel. Therefore, how to ensure the smooth signal of underground rescue and how to quickly adjust the equipment in case of an accident are one of the problems that technicians in this field need to solve.

[0003] Reference 1: China's invention patent (CN221165748U) disclosed on June 18, 2024, "A Mine Vertical Rescue Lifting Device", includes a basic component, a zoom component and a fixed component, the left and right ends of the basic component are equipped with fixed components, the bottom end of the fixed component is equipped with a zoom component, the basic component includes a cross bar, a rope is provided in the middle of the outer wall of the cross bar, the bottom end of the rope is fixedly connected with a hook, the zoom component includes a wire wheel, the right end of the wire wheel is fixedly connected with a first motor, the bottom end of the first motor is fixedly connected with a support rod, and the top end of the left support rod is rotatably connected to the bottom side of the left end of the wire wheel. The rope is released or retracted by rotating the wire wheel to lower or lift the rescuer out of the mine. However, the device only provides a rescue device, and does not consider the detection of toxic gases underground, and there are no response measures for emergencies.

[0004] Reference 2: The Chinese invention patent (CN221810854U) disclosed on October 8, 2024, "A coal mine underground rescue device", includes a support seat, the top of which is fixedly connected to one end of a plurality of reinforcement arms in a circular array, and the other end of the reinforcement arm is provided with a support top seat, and the support top seat is provided with an underground rescue auxiliary mechanism; the output end of the second drive motor passes through the bottom of the assembly seat and is fixedly connected to the outer wall of the camera. Before the rescue personnel wear protective equipment and enter the well, the connection chain is placed in the well, driving the assembly seat to be placed in the well and located below the rescue personnel. When the rescue personnel continue to move downward, the second drive motor can be started, and the second drive motor drives the camera to rotate. The camera can be used to observe the environment in the well in real time, and then the specific situation in the well can be understood in advance. However, the device does not detect toxic gases underground, and there are no response measures for emergencies.

[0005] In summary, the existing underground rescue devices have the following deficiencies:

[0006] 1. Reference 1 only provides a rescue device, and does not realize the real-time interaction of video, voice, and valve downhole environment detection data through the downhole and uphole linkage system and dynamically connect with the electric winch to ensure the safety of underground workers.

[0007] 2. Reference 2 only considers real-time monitoring underground, and does not include a speed detection system or a speed sensor on a multi-function helmet. It cannot ensure that the equipment can stop immediately when personnel or equipment get stuck underground through the controller.

[0008] 3. The equipment in references 1 and 2 is bulky, and there are no two postures for operation and storage. It is not convenient to move in complex working environments, and its ability to adapt to the working environment is poor. Summary of the invention

[0009] The technical problem to be solved by the present invention is to overcome the problems existing in the above-mentioned prior art. Specifically, a downhole rescue device for a valve well is provided. The device is intended to provide a device that can monitor downhole conditions in real time and detect toxic gases, and can also judge the operating status of the device through the speed detection function and perform corresponding operations to ensure the safety of the rescued personnel.

[0010] The technical solution of the present invention is as follows.

[0011] A downhole rescue device for a valve well, comprising a device body installed at the wellhead of the valve well, a multifunctional helmet and a controller worn by downhole personnel; the device body comprises a frame, a display screen, an electric winch, a boom, a pulling arm, a shield and a speed detection system; the speed detection system comprises a rotatable detection sleeve, and the axis of the detection sleeve is perpendicular to the boom, and an encoder is installed on the detection sleeve;

[0012] The frame is a rectangular frame, one of the short sides is marked as side A, the position close to side A is a solid part, and the rest is hollow; a universal wheel is installed at each of the four corners of the lower surface of the frame, a handle is installed at the center of each of the two long sides of the upper surface of the frame, and a pull arm base is installed at the center of side A, the controller and the display screen are installed on one side of the solid part, and a battery and an electric winch are installed on the other side of the solid part, and the battery supplies power to the electric winch and the controller;

[0013] The boom is equipped with a speed detection system near the tail end, a hanging wheel near the top end, and a pulley between the two ends. After the steel cable of the electric winch is wound around the detection sleeve, it passes through the pulley and the hanging wheel upward along the boom, and forms a sling for the personnel going down the well at its tail end;

[0014] Pin holes are reserved at the tail end and top end of the pulling arm, the top end of the pulling arm base, and the lower part of the boom above the installation position of the speed retrieval system. The top end of the pulling arm is aligned with the pin hole at the tail end of the boom and locked by a connecting pin. When working, the tail end of the pulling arm is aligned with the pin hole at the top end of the pulling arm base and locked by a pull pin.

[0015] The multifunctional helmet is equipped with a monitoring camera, a speed sensor, a gas detection sensor, a microphone and a communication antenna. The images and data obtained by the monitoring camera, the speed sensor and the gas detection sensor are sent to the controller through the communication antenna.

[0016] Preferably, the controller includes a microcontroller, a receiving module and a control module; the monitoring camera, the speed sensor, and the gas detection sensor are electrically connected to the receiving module in one direction through a communication antenna, so as to transmit the captured images and data to the receiving module, and the encoder is electrically connected to the receiving module, so as to transmit the data obtained by the encoder to the receiving module; the microcontroller is electrically connected to the receiving module, so as to receive and process images and data, make judgments according to pre-stored strategies, and issue action control instructions and early warning instructions to the electric winch; the microcontroller is electrically connected to the control module, so as to issue action control instructions and early warning instructions to the electric winch, and the control module is electrically connected to the start switch and the operation indicator light of the electric winch, so as to control the action and alarm of the electric winch, and the microcontroller is electrically connected to the display screen, so as to transmit the processed image to the display screen.

[0017] Preferably, the device body further includes a shield, the shape of which matches the external shape of the display screen, the battery, and the electric winch, and is located above the display screen, the battery, and the electric winch;

[0018] The protective cover is provided with a start switch and an operation indicator light of the electric winch, wherein the indicator light includes a warning light.

[0019] Preferably, the connection cable of the communication antenna is retracted and released through a cable retractor, and the cable retractor is installed on the frame of the device body.

[0020] Preferably, the speed detection system comprises a core shaft, a detection sleeve, an inner ring spacer, an outer ring spacer and two pairs of bearings; the boom is composed of two parallel boom side plates, and both ends of the core shaft are provided with reduced diameters with external threads. The core shaft passes through the two boom side plates and is respectively locked by bolts on the outside of the two boom side plates, and is sequentially inserted into the inner ring spacer, the bearing, the outer ring spacer, the bearing, and the inner ring spacer between the two boom side plates, and the detection sleeve is embedded outside the inner ring spacer, the bearing, the outer ring spacer, the bearing, and the inner ring spacer.

[0021] Compared with the prior art, the beneficial effects of the present invention include:

[0022] 1. Through the advanced underground and surface linkage system, real-time interaction of video, voice, and valve underground environment detection data is achieved and dynamically connected with the electric winch to ensure the safety of underground workers.

[0023] 2. The present invention designs two independent lifting speed monitoring systems - a speed detection system installed on the boom and a speed sensor on the multifunctional helmet, and through the controller, it can ensure that the equipment can stop moving immediately when personnel or equipment are stuck underground.

[0024] 3. The overall weight of the equipment body in the present invention is less than 40kg, and two postures are set for operation and storage. In complex working environments, it can be manually transported to the valve well, and has a strong ability to adapt to the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the device body in the use state according to an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of the structure of the device body in the storage state in an embodiment of the present invention;

[0027] Figure 3 A top view of an embodiment of the present invention when the shield is removed;

[0028] Figure 4 A simplified structural diagram of the device body in the use state according to an embodiment of the present invention;

[0029] Figure 5 It is a partial enlarged diagram of the speed detection system in the embodiment of the present invention;

[0030] Figure 6 4 is a block diagram of a controller in an embodiment of the present invention.

[0031] In the figure: 1. frame, 2. universal wheel, 3. handle, 4. take-up device, 5. boom, 6. guard, 8. maintenance handle, 9. display screen, 10. arm base, 11. arm, 12. pull pin, 13. arm side plate, 14. hanging wheel, 15. electric winch start switch, 16. operation indicator light, 18. pulley, 19. speed detection system, 20. battery, 21. electric winch, 24. spindle, 25. detection sleeve, 26. inner ring spacer, 27. outer ring spacer, 28. bearing, 29. fixing bolt; 30. connecting pin, 31. monitoring camera, 32. speed sensor, 33. gas detection sensor, 34. communication antenna, 35. encoder, 40. controller, 41. microcontroller, 42. receiving module, 43. control module. DETAILED DESCRIPTION

[0032] The present invention is described in more detail below with reference to the accompanying drawings and embodiments.

[0033] Figure 1 is a schematic diagram of the structure of the device body in the use state according to an embodiment of the present invention, Figure 2 A schematic diagram of the structure of the device body in the storage state in an embodiment of the present invention, Figure 3 A top view of the embodiment of the present invention when the shield is removed, Figure 4 is a simplified structural diagram of the device body in the use state according to an embodiment of the present invention, Figure 5 This is a partial enlarged view of the speed detection system in an embodiment of the present invention. Figure 6 FIG. 1 is a block diagram of a controller according to an embodiment of the present invention. Figure 1-Figure 6 It can be seen that the present invention provides an underground rescue device for a valve well, including an equipment body installed at the wellhead of the valve well, a multifunctional helmet and a controller 40 worn by the personnel going down the well; the equipment body includes a frame 1, a display screen 9, an electric winch 21, a boom 5, a pulling arm 11, a shield 6 and a speed detection system 19. The speed detection system 19 includes a rotatable detection sleeve 25, and the axis of the detection sleeve 25 is perpendicular to the boom 5, and an encoder 35 is installed on the detection sleeve 25.

[0034] The frame 1 is a rectangular frame, one of the short sides is marked as side A, the position close to side A is a solid part, and the rest of the part is hollow; a universal wheel 2 is installed on each of the four corners of the lower surface of the frame 1, a handle 3 is installed at the center position of each of the two long sides of the upper surface of the frame, and a pull arm base 10 is installed at the center position of side A. The controller 40 and the display screen 9 are installed on one side of the solid part, and a battery 20 and an electric winch 21 are installed on the other side of the solid part. The battery 20 supplies power to the electric winch 21 and the controller 40.

[0035] In this embodiment, a maintenance handle 8 is also installed on the A side.

[0036] The boom 5 is provided with a speed detection system 19 near the tail end, a hanging wheel 14 near the top end, and a pulley 18 between the two ends. After the steel cable of the electric winch 21 is wound around the detection sleeve 25 for one circle, it passes upward along the boom 5 through the pulley 18 and the hanging wheel 14, and forms a sling for the personnel going down the well at its tail end.

[0037] Pin holes are reserved at the tail end and top end of the pulling arm 11, the top end of the pulling arm base 10, and the lower part of the boom 5 above the installation position of the speed retrieval system 19. The top end of the pulling arm 11 is aligned with the pin hole at the tail end of the boom 5 and locked by a connecting pin 30. When working, the tail end of the pulling arm 11 is aligned with the pin hole at the top end of the pulling arm base 10 and locked by a pull pin 12.

[0038] In this embodiment, when not in operation, the pull pin 12 is removed, the pull arm 11 is separated from the pull arm base 10, and then the pull arm 11 is reversed and laid flat in the direction of the boom 5, that is, the pull arm 11 is turned to the horizontal direction. Figure 2 Shown in stowed state.

[0039] The multifunctional helmet is equipped with a monitoring camera 31, a speed sensor 32, a gas detection sensor 33, a microphone and a communication antenna 34. The images and data obtained by the monitoring camera 31, the speed sensor 32 and the gas detection sensor 33 are sent to the controller 40 via the communication antenna 34.

[0040] In this embodiment, the controller 40 includes a microcontroller 41, a receiving module 42 and a control module 43; the monitoring camera 31, the speed sensor 32, and the gas detection sensor 33 are electrically connected to the receiving module 42 in one direction through the communication antenna 34, so as to transmit the captured images and data to the receiving module 42, and the encoder 35 is communicatively connected to the receiving module 42, so as to transmit the data obtained by the encoder 35 to the receiving module 42; the microcontroller 41 is electrically connected to the receiving module 42, so as to receive and process images and data, make judgments according to pre-stored strategies, and issue action control instructions and early warning instructions for the electric winch; the microcontroller 41 is electrically connected to the control module 43, so as to issue action control instructions for the electric winch and early warning instructions for the indicator light; the control module 43 is electrically connected to the start switch 15 and the operation indicator light 16 of the electric winch, so as to control the action and alarm of the electric winch, and the microcontroller 41 is electrically connected to the display screen 9, so as to transmit the processed images to the display screen 9.

[0041] In this embodiment, the device body further includes a shield 6 , the shape of which is adapted to the external shapes of the display screen 9 , the battery 20 , and the electric winch 21 , and is located above the display screen 9 , the battery 20 , and the electric winch 21 .

[0042] The protective cover 6 is provided with a start switch 15 and an operation indicator light 16 of the electric winch, wherein the indicator light 16 includes a warning light.

[0043] Depend on Figure 2 It can be seen that the start switch 15 includes three buttons, and the operation indicator light 16 includes two lights. From left to right, they are: an ascending button, a descending button, a stop button, a green operating light, and a stop red light. The red light is a warning light.

[0044] In this embodiment, the connection cable of the communication antenna 34 is retracted and released through a cable retractor 4, and the cable retractor 4 is installed on the frame 1 of the device body.

[0045] In this embodiment, the speed detection system 19 includes a core shaft 24, a detection sleeve 25, an inner ring spacer 26, an outer ring spacer 27 and two pairs of bearings 28; the boom 5 is composed of two parallel boom side plates 13, and both ends of the core shaft 24 have reduced diameters with external threads. The core shaft 24 passes through the two boom side plates 13 and is locked on the outside of the two boom side plates 13 by bolts 29 respectively, and is sequentially inserted into the inner ring spacer 26, the bearing 28, the outer ring spacer 27, the bearing 28, and the inner ring spacer 26 between the two boom side plates 13, and the detection sleeve 25 is embedded outside the inner ring spacer 26, the bearing 28, the outer ring spacer 27, the bearing 28, and the inner ring spacer 26.

[0046] In this embodiment, after the steel cable of the electric winch 21 is wound around the detection sleeve 25 once, the encoder 35 can measure the speed through the relationship between the rotation angle of the detection sleeve 25 and time, and transmit the signal to the controller 22 through the encoder 35.

[0047] The use process of the present invention is as follows.

[0048] Place the underground rescue equipment on the wellhead of the valve well, manually pull out the pull pin 12, then flip the pulling arm 11 and lock it with the pulling arm base 10 with the pull pin 12. At this time, the underground rescue equipment is changed from the storage state to the use state, and the switch of the electric winch 21 is turned on. After putting on the safety equipment, the safety equipment is hung on the hanging wheel 14, and a multi-functional helmet and microphone are carried down the well. At this time, the real-time video captured by the monitoring camera 31, the data obtained by the speed sensor 32 and the gas detection sensor 33 can be transmitted to the controller through the communication antenna 34, and the video can be displayed in real time on the display screen 9. The safety personnel on the well can understand the situation underground in real time. At the same time, the communication antenna 34 also ensures smooth communication between the underground and surface personnel;

[0049] After the safety equipment is put on and the lifting is completed, the electric winch 21 starts to slowly lower the personnel to the valve well. At the same time, the speed sensor 32 and the speed detection system 19 synchronously detect the speed. Once the winch speed is inconsistent with the steel cable speed, the controller 40 assumes that the personnel are stuck or there are other abnormalities, and will immediately issue a stop command, and the electric winch 21 will immediately stop.

[0050] In addition, when manual work is performed underground, the underground environmental data sent back through the communication antenna 34 mainly include the harmful gas content and oxygen content. Once the content exceeds the set value, the controller will also issue an action control instruction and notify the underground personnel through the communication antenna to stop working and immediately go up the well to ensure the safety of the underground workers.

Claims

1. An underground rescue device for a valve well, characterized in that: The invention comprises an equipment body installed at the wellhead of a valve well, a multifunctional helmet and a controller (40) worn by personnel going down the well; the equipment body comprises a frame (1), a display screen (9), an electric winch (21), a boom (5), a pulling arm (11), a shield (6) and a speed detection system (19); the speed detection system (19) comprises a rotatable detection sleeve (25), the axis of the detection sleeve (25) is perpendicular to the boom (5), and an encoder (35) is installed on the detection sleeve (25); The frame (1) is a rectangular frame, one of the short sides is marked as side A, the position close to side A is a solid part, and the rest of the part is hollow; a universal wheel (2) is installed at each of the four corners of the lower surface of the frame (1), a handle (3) is installed at the center of each of the two long sides of the upper surface of the frame, and a pull arm base (10) is installed at the center of side A; the controller (40) and the display screen (9) are installed on one side of the solid part, and a battery (20) and an electric winch (21) are installed on the other side of the solid part, and the battery (20) supplies power to the electric winch (21) and the controller (40); The boom (5) is provided with a speed detection system (19) near the tail end, a suspension wheel (14) near the top end, and a pulley (18) between the two ends. After the steel cable of the electric winch (21) is wound around the detection sleeve (25) for one circle, it passes upward along the boom (5) through the pulley (18) and the suspension wheel (14), and forms a sling for the personnel going down the well at the tail end. Pin holes are reserved at the tail end and top end of the pulling arm (11), the top end of the pulling arm base (10), and the lower part of the suspension arm (5) above the installation position of the speed retrieval system (19). The top end of the pulling arm (11) is aligned with the pin hole at the tail end of the suspension arm (5) and locked by a connecting pin (30); when working, the tail end of the pulling arm (11) is aligned with the pin hole at the top end of the pulling arm base (10) and locked by a pull pin (12); The multifunctional helmet is equipped with a monitoring camera (31), a speed sensor (32), a gas detection sensor (33), a microphone (36) and a communication antenna (34); images and data obtained by the monitoring camera (31), the speed sensor (32) and the gas detection sensor (33) are sent to a controller (40) via the communication antenna (34).

2. The underground rescue equipment for valve well according to claim 1, characterized in that: The controller (40) comprises a microcontroller (41), a receiving module (42) and a control module (43); the monitoring camera (31), the speed sensor (32) and the gas detection sensor (33) are electrically connected to the receiving module (42) in a one-way manner via a communication antenna (34) for transmitting the captured images and data to the receiving module (42); the encoder (35) is electrically connected to the receiving module (42) for transmitting the data obtained by the encoder (35) to the receiving module (42); the microcontroller (41) and the receiving module (43) are electrically connected to each other. 2) electrically connected to receive and process images and data, make judgments based on pre-stored strategies, and issue action control instructions and warning instructions for the electric winch; the microcontroller (41) is electrically connected to the control module (43) to issue action control instructions and warning instructions for the electric winch, the control module (43) is electrically connected to the start switch (15) and the operation indicator light (16) of the electric winch to control the action and alarm of the electric winch, and the microcontroller (41) is electrically connected to the display screen (9) to transmit the processed image to the display screen (9).

3. The underground rescue equipment for valve wells according to claim 2, characterized in that: The device body also includes a protective cover (6), the shape of which matches the external shapes of the display screen (9), the battery (20), and the electric winch (21), and is located above the display screen (9), the battery (20), and the electric winch (21); The protective cover (6) is provided with a start switch (15) and an operation indicator light (16) of the electric winch, wherein the indicator light (16) includes a warning light.

4. The underground rescue equipment for a valve well according to claim 1, characterized in that: The connection cable of the communication antenna (34) is retracted and released through a cable retractor (4), and the cable retractor (4) is installed on the frame (1) of the device body.

5. The underground rescue equipment for valve well according to claim 1, characterized in that: The speed detection system (19) comprises a core shaft (24), a detection sleeve (25), an inner ring spacer (26), an outer ring spacer (27) and two pairs of bearings (28); the boom (5) is composed of two parallel boom side plates (13); both ends of the core shaft (24) are provided with reduced diameters with external threads; the core shaft (24) passes through the two boom side plates (13) and is respectively locked on the outer sides of the two boom side plates (13) by bolts (29); and is sequentially sleeved in the inner ring spacer (26), the bearing (28), the outer ring spacer (27), the bearing (28) and the inner ring spacer (26) between the two boom side plates (13); the detection sleeve (25) is sleeved outside the inner ring spacer (26), the bearing (28), the outer ring spacer (27), the bearing (28) and the inner ring spacer (26).

Images