A sub-surface rescue device for a valve pit

Abstract

The application provides a downhole rescue device for a valve well, and belongs to the technical field of downhole operation of valve wells. The device comprises a device main body arranged at the well mouth of the valve well, a multifunctional helmet worn by a downhole worker and a controller, and the multifunctional helmet is provided with a speed and gas sensor. The overall weight of the downhole rescue device is less than 40 kg, and two postures of operation and storage are arranged, the device can be manually carried to the valve well in a complex operation environment, and the device has strong adaptability to the working environment. Through an advanced downhole and uphole linkage system, video, voice and downhole environment detection data are realized in real time interaction and are dynamically connected to a winch mechanism, so that the safety of downhole workers is ensured. Two sets of independent lifting speed monitoring systems can confirm that the device can immediately stop when the personnel or the device is stuck in the downhole.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valve well downhole operation, in particular to a downhole rescue equipment for valve well. BACKGROUND

[0002] In the technical field of valve well downhole operation, the city underground pipe network has become mature today, and the cleaning, repair and maintenance of the city underground website are also important parts of the city government. However, due to the long-term closed space in the deep part of the valve well, combined with the possible leakage or marsh gas, harmful gases such as methane and hydrogen sulfide often accumulate, and the oxygen content is insufficient, which seriously threatens the safety of downhole operation personnel. The rescue device can successfully rescue the trapped personnel from the well by lowering the rescue equipment, thereby saving the lives of 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 delayed information transmission during the rescue process, increasing the complexity of the rescue. The valve well is often accompanied by high temperature, corrosive gas, 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 have an accident during rescue, the operating state of the rescue equipment cannot be adjusted well, which also threatens the lives of the rescued personnel. Therefore, how to ensure smooth signal rescue in the well and how to quickly adjust the equipment in case of an emergency are one of the problems that need to be solved by those skilled in the art.

[0003] Reference 1: Chinese utility model patent (CN221165748U) disclosed on June 18, 2024, "Mine vertical rescue lifting device", including basic components, zooming components and fixing components, the basic components are installed with fixing components at both ends, the fixing components are installed with zooming components at the bottom, the basic components include a crossbar, the crossbar outer wall middle part is provided with a rope, the rope bottom end is fixedly connected with a hook, the zooming components include a line reel, the line reel right end is fixedly connected with a first motor, the first motor bottom end is fixedly connected with a support rod, the left side support rod top end is rotationally connected to the line reel left end bottom side. The rope is put out or retracted by the line reel rotation, and the rescue personnel is lowered or lifted away from the mine. However, this device only provides a rescue equipment, and does not consider detecting toxic gases in the well, and does not have measures to deal with emergencies.

[0004] Reference 2: Chinese utility model patent (CN221810854U) disclosed on October 8, 2024, "A coal mine underground rescue device", including a support seat, the top of the support seat is circularly arrayed and fixedly connected with one end of a plurality of reinforcing arms, the other end of the reinforcing arm is provided with a support top, the support top is provided with an underground rescue auxiliary mechanism; the output end of the second drive motor penetrates the bottom of the assembly seat and is fixedly connected with the outer wall of the camera, before the rescue personnel wear protective equipment into the well, the connecting chain is placed in the well, the assembly seat is driven into the well and is located below the rescue personnel, when the rescue personnel continuously move downward, the second drive motor can be started to drive the camera to rotate, the environment in the well can be observed in real time through the camera, and the specific situation of the well is known in advance. However, the device does not detect toxic gases in the well, and there is no response measure for unexpected situations.

[0005] In summary, the existing underground rescue device has the following problems:

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

[0007] 2. Reference 2 only considers real-time monitoring of the well, and does not have a speed detection system and a speed sensor on the multifunctional helmet, which cannot ensure that the device can stop immediately when the personnel or equipment is stuck in the well through the controller

[0008] 3. The device body in reference 1 and 2 is relatively heavy, and does not set two postures of operation and storage, which is not convenient to move in complex operation environment and has poor adaptability to working environment. SUMMARY

[0009] The technical problem to be solved by the present application is to overcome the problems in the prior art. Specifically, a device for underground rescue of valve well is provided. The device aims to provide a device that can monitor the underground situation in real time, detect toxic gases, and judge the running 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 application is as follows.

[0011] A device for underground rescue of valve well, comprising a device body placed at the wellhead of the valve well, a multifunctional helmet worn by a person going down the well and a controller; the device body comprises a frame, a display screen, an electric winch, a boom, an 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 mounted on the detection sleeve;

[0012] The frame is a rectangular frame, one of the short sides is called A side, the position close to the A side is solid part, and the rest is hollow; a universal wheel is installed on each of the four corners of the lower surface of the frame, a handle is installed on the center of each of the two long sides of the upper surface of the frame, and a pull arm base is installed on the center of the A side; 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 speed detection system is installed close to the tail end of the boom, the lifting wheel is installed close to the top end, and a pulley is installed between the two ends; after the steel cable of the electric winch winds around the detection sleeve for one turn, it passes through the pulley and the lifting wheel upwards along the boom, and forms a lifting belt for the downhole personnel at the tail end thereof;

[0014] The tail end and the top end of the pull arm, the top end of the pull arm base, and the lower part of the boom higher than the installation position of the speed detection system are all provided with a bolt hole, and the top end of the pull arm is locked by a connecting pin after being aligned with the bolt hole of the tail end of the boom; during operation, the tail end of the pull arm is locked by a pulling pin after being aligned with the bolt hole of the top end of the pull arm base;

[0015] The multifunctional helmet is provided 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 transmitted to the controller through the communication antenna.

[0016] Preferably, the controller comprises a microcontroller, a receiving module and a control module; the monitoring camera, the speed sensor and the gas detection sensor are unidirectionally electrically connected with the receiving module through the communication antenna, for transmitting the captured images and data to the receiving module; the encoder is electrically connected with the receiving module, for transmitting the data obtained by the encoder to the receiving module; the microcontroller is electrically connected with the receiving module, for receiving and processing the images and data, judging according to the pre-stored strategy, and issuing action control instructions and early warning instructions for the electric winch; the microcontroller is electrically connected with the control module, for issuing the action control instructions and the early warning instructions for the electric winch; the control module is electrically connected with the start switch and the running indicator light of the electric winch, for controlling the action of the electric winch and the alarm; and the microcontroller is electrically connected with the display screen, for transmitting the processed images to the display screen.

[0017] Preferably, the device body further comprises a protective cover, the shape of the protective cover is adapted to the external shapes of the display screen, the battery and the electric winch, and the protective cover is located above the display screen, the battery and the electric winch;

[0018] The shroud is provided with a starting switch and an operation indicating lamp of an electric winch, and the indicating lamp comprises a warning lamp.

[0019] Preferably, the connecting cable of the communication antenna is reeled through a reel installed on the frame of the device body.

[0020] Preferably, the speed detection system comprises a mandrel, a detection sleeve, an inner ring spacer sleeve, an outer ring spacer sleeve and two pairs of bearings; the hanging arm is composed of two parallel hanging arm side plates; the two ends of the mandrel are provided with a reduced diameter with external threads, the mandrel passes through the two hanging arm side plates and is locked outside the two hanging arm side plates by bolts respectively, and the inner ring spacer sleeve, the bearing, the outer ring spacer sleeve, the bearing and the inner ring spacer sleeve are sequentially sleeved between the two hanging arm side plates, and the detection sleeve is nested outside the inner ring spacer sleeve, the bearing, the outer ring spacer sleeve, the bearing and the inner ring spacer sleeve.

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

[0022] 1. Through the advanced downhole-uphole linkage system, video, voice and valve downhole environment detection data are realized to be interacted in real time and dynamically connected with the electric winch, so as to ensure the safety of downhole operation personnel.

[0023] 2. The present application designs two independent lifting speed monitoring systems, a speed detection system installed on the hanging arm and a speed sensor on the multifunctional helmet, and through the controller, it can be ensured that the equipment can stop immediately when the personnel or equipment is stuck in the well.

[0024] 3. The overall weight of the device body in the present application is less than 40 kg, and two postures of operation and storage are set, so that the device body can be manually carried to the valve well in a complex operation environment, and the adaptability to the working environment is strong. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic view of the device body in the present application in a use state;

[0026] Figure 2 is a structural schematic view of the device body in the present application in a storage state;

[0027] Figure 3 is a top view when the shroud in the present application is removed;

[0028] Figure 4 is a structural schematic view of the device body in the present application in a use state;

[0029] Figure 5 is a partial enlarged view of the speed detection system in the present application;

[0030] Figure 6The block diagram of the controller in the embodiment of the present application.

[0031] In the figure: 1. frame, 2. universal wheel, 3. handle, 4. take-up device, 5. boom, 6. shield, 8. maintenance handle, 9. display screen, 10. pull arm base, 11. pull arm, 12. pull pin, 13. boom side plate, 14. hoisting wheel, 15. electric winch start switch, 16. running indicator light, 18. pulley, 19. speed detection system, 20. battery, 21. electric winch, 24. mandrel, 25. detection sleeve, 26. inner ring spacer sleeve, 27. outer ring spacer sleeve, 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 application will be described in more detail below with reference to the drawings and embodiments.

[0033] Figure 1 The structural schematic diagram of the device main body in the use state in the embodiment of the present application, Figure 2 The structural schematic diagram of the device main body in the storage state in the embodiment of the present application, Figure 3 The plan view when the shield is removed in the embodiment of the present application, Figure 4 The structural schematic diagram of the device main body in the use state in the embodiment of the present application, Figure 5 The local enlarged view of the speed detection system in the embodiment of the present application, Figure 6 The block diagram of the controller in the embodiment of the present application. By Figures 1-6 It can be seen that the present application provides a downhole rescue device for valve well, which comprises a device main body arranged at the well mouth of the valve well, a multifunctional helmet worn by a downhole worker and a controller 40; the device main body comprises a frame 1, a display screen 9, an electric winch 21, a boom 5, a pull arm 11, a shield 6 and a speed detection system 19. The speed detection system 19 comprises a rotatable detection sleeve 25, and the axis of the detection sleeve 25 is perpendicular to the boom 5, and an encoder 35 is arranged on the detection sleeve 25.

[0034] The frame 1 is a rectangular frame, one of the short sides is marked as A side, the position close to the A side is a solid part, and the rest is a hollow part; one universal wheel 2 is arranged at each of the four corners of the lower surface of the frame 1, one handle 3 is arranged at the center of each of the two long sides of the upper surface of the frame, one pull arm base 10 is arranged at the center of the A side, the controller 40 and the display screen 9 are arranged on one side of the solid part, a battery 20 and an electric winch 21 are arranged on the other side of the solid part, and 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 speed detection system 19 is installed near the tail end of the boom 5, and the lifting wheel 14 is installed near the top end. A pulley 18 is installed between the two ends. After the steel cable of the electric winch 21 winds around the detection sleeve 25, it passes through the pulley 18 and the lifting wheel 14 along the boom 5 upwards, and forms a lifting belt for the personnel at the tail end.

[0037] The tail end and the top end of the pull arm 11, the top end of the pull arm base 10, and the lower part of the boom 5 higher than the installation position of the speed detection system 19 are all provided with a pin hole. The top end of the pull arm 11 is locked by a connecting pin 30 after aligning with the pin hole of the tail end of the boom 5. During work, the tail end of the pull arm 11 is locked by a pulling pin 12 after aligning with the pin hole of the top end of the pull arm base 10.

[0038] In this embodiment, the pulling pin 12 is removed in the non-working state, the pull arm 11 is separated from the pull arm base 10, and then the pull arm 11 is reversed towards the boom 5 and laid flat, that is, it enters Figure 2 the storage state shown.

[0039] The multifunctional helmet is provided 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 through 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 unidirectionally electrically connected to the receiving module 42 through the communication antenna 34, for transmitting the captured images and data to the receiving module 42. The encoder 35 is communicatively connected to the receiving module 42, for transmitting the data obtained by the encoder 35 to the receiving module 42. The microcontroller 41 is electrically connected to the receiving module 42, for receiving and processing the images and data, judging according to the pre-stored strategy, and issuing action control instructions and early warning instructions for the electric winch. The microcontroller 41 is electrically connected to the control module 43, for issuing the action control instructions for the electric winch and the early warning instructions for the indicator light. The control module 43 is electrically connected to the start switch 15 of the electric winch and the running indicator light 16, for controlling the action of the electric winch and the alarm. The microcontroller 41 is electrically connected to the display screen 9, for transmitting the processed images to the display screen 9.

[0041] In the embodiment, the device body further comprises a shield 6, which is shaped to match the external shape 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 shield 6 is provided with a start switch 15 of the electric winch and an operation indicator 16, which comprises a warning light.

[0043] The start switch 15 comprises three buttons, and the operation indicator 16 comprises two lights. Figure 2 As can be seen, the start switch 15 comprises three buttons, and the operation indicator 16 comprises two lights. From left to right, they are: an up button, a down button, a stop button, a green operation light and a red stop light. The red light is a warning light.

[0044] In the embodiment, the connecting cable of the communication antenna 34 is wound and unwound by a take-up device 4, which is mounted on the frame 1 of the device body.

[0045] In the embodiment, the speed detection system 19 comprises a mandrel 24, a detection sleeve 25, an inner ring spacer sleeve 26, an outer ring spacer sleeve 27 and two pairs of bearings 28. The boom 5 is composed of two parallel boom side plates 13. The mandrel 24 is provided with a reduced diameter with external threads at both ends, passes through the two boom side plates 13 and is locked outside the two boom side plates 13 by bolts 29, and sequentially has the inner ring spacer sleeve 26, the bearings 28, the outer ring spacer sleeve 27, the bearings 28 and the inner ring spacer sleeve 26 between the two boom side plates 13. The detection sleeve 25 is nested outside the inner ring spacer sleeve 26, the bearings 28, the outer ring spacer sleeve 27, the bearings 28 and the inner ring spacer sleeve 26.

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

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

[0048] The downhole rescue device is placed on the wellhead of the valve well, the pulling pin 12 is manually pulled out, the pulling arm 11 is then turned over and locked with the pulling arm base 10 by the pulling pin 12, at this time the downhole rescue device is changed from the storage state to the use state, and the switch of the electric winch 21 is turned on. After wearing safety equipment, the safety equipment is hung on the hoisting wheel 14, and the multifunctional helmet and the microphone are taken downhole. At this time, the real-time video taken 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 on the display screen 9 in real time, and the safety personnel on the well can know the situation in the well in real time, and the communication between the personnel in the well and the personnel on the well is smooth.

[0049] After the safety equipment is worn and the hoisting is completed, the electric winch 21 starts to slowly lower the personnel to the valve well, and the speed sensor 32 and the speed detection system 19 synchronously detect the speed. Once the winch speed and the steel cable speed are inconsistent, the controller 40 defaults that the personnel is stuck or there is other abnormality, and a stop command is immediately issued. The electric winch 21 immediately stops the action.

[0050] In addition, when the personnel is working in the well, the downhole environment data mainly including the harmful gas content and the oxygen content sent back through the communication antenna 34 is once more than the set value, the controller will also issue an action control command, and the downhole personnel is informed to stop working through the communication antenna, and immediately ascends the well to ensure the safety of the downhole operation personnel.

Claims

1. A downhole rescue device for valve wells, characterized in that, The equipment includes the main body of the equipment placed at the wellhead of the valve well, a multi-functional helmet and controller (40) worn by the personnel going down into the well; the main body of the equipment includes a frame (1), a display screen (9), an electric winch (21), a boom (5), a tie rod (11), a protective cover (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 mounted on the detection sleeve (25); The frame (1) is a rectangular frame. One of its short sides is designated as side A. The part near side A is solid, and the rest is hollow. A caster 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. 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. 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). The boom (5) is equipped with a speed detection system (19) near the tail end and a wheel (14) near the top end, and a pulley (18) is installed between the two ends. After the steel cable of the electric winch (21) wraps around the detection sleeve (25) once, it goes up along the boom (5) through the pulley (18) and the wheel (14) and forms a sling for the personnel going down into the well at its tail end. Pin holes are provided at the tail end and top end of the pull arm (11), the top end of the pull arm base (10), and the lower part of the boom (5) above the installation position of the speed detection system (19). The top end of the pull arm (11) is aligned with the pin hole at the tail end of the boom (5) and locked by a connecting pin (30). During operation, the tail end of the pull arm (11) is aligned with the pin hole at the top end of the pull arm base (10) and locked by a pull pin (12). The multi-functional 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). 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) through the communication antenna (34).

2. The downhole rescue equipment for valve wells according to claim 1, characterized in that, 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 unidirectionally electrically connected to the receiving module (42) via a communication antenna (34) to transmit the captured images and data to the receiving module (42); the encoder (35) is electrically connected to the receiving module (42) to transmit the data obtained by the encoder (35) to the receiving module (42); the microcontroller (41) and the receiving module (42) are connected to the receiving module (43). 2) Electrical connection, used to receive and process images and data, make judgments according to the pre-stored strategy, and issue action control commands and warning commands to the electric winch; the microcontroller (41) is electrically connected to the control module (43) and is used to issue action control commands and warning commands to the electric winch; the control module (43) is electrically connected to the start switch (15) and the running indicator (16) of the electric winch and is used to control the action of the electric winch and alarm; the microcontroller (41) is electrically connected to the display screen (9) and is used to transmit the processed images to the display screen (9).

3. The downhole rescue equipment for valve wells according to claim 2, characterized in that, The main body of the equipment also includes a protective cover (6), the shape of which is adapted to the external shape of the display screen (9), battery (20) and electric winch (21), and is located above the display screen (9), battery (20) and electric winch (21); The protective cover (6) is equipped with an electric winch start switch (15) and a running indicator light (16), the indicator light (16) including a warning light.

4. The downhole rescue equipment for valve wells according to claim 1, characterized in that, The connection cable of the communication antenna (34) is wound up and down through a take-up device (4), which is mounted on the frame (1) of the main body of the device.

5. A downhole rescue device for valve wells according to claim 1, characterized in that, The speed detection system (19) includes a spindle (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). The two ends of the spindle (24) have reduced diameters with external threads. The spindle (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). The inner ring spacer (26), bearing (28), outer ring spacer (27), bearing (28), and inner ring spacer (26) are sequentially installed between the two boom side plates (13). The detection sleeve (25) is nested outside the inner ring spacer (26), bearing (28), outer ring spacer (27), bearing (28), and inner ring spacer (26).

Images