Offshore explosion measurement equipment release device based on water pressure signal

Abstract

The invention discloses an offshore explosion measurement equipment release device based on a water pressure signal, which comprises a test platform, measurement equipment and a release device are installed on the test platform, the measurement equipment and the release device are fixed on the test platform through fixing devices, a water pressure sensor is installed on the release device, and the water pressure sensor is connected with the test platform. And after the water pressure sensor acquires that a water depth signal exceeds a threshold value, the releasing device works, the fixing device is loosened, and the measuring equipment is released. The offshore explosion measurement equipment release device based on the water pressure signal is suitable for an automatic release system of the offshore explosion measurement equipment under a certain water depth condition, the water depth is judged by measuring the current water pressure according to the corresponding relation between the water depth and the water pressure, and the release time of the measurement equipment is determined.

Description

Technical Field

[0001] The invention relates to a release device for offshore explosion measurement equipment based on water pressure signals, belonging to the field of marine equipment testing. Background Art

[0002] Offshore explosion tests are a key means of testing the explosion and impact resistance of marine engineering equipment. After the test, the explosion measurement equipment may sink into the water with the test platform, causing irreversible losses. The design of explosion measurement equipment is difficult, the manufacturing cycle is long, and the cost is high. Therefore, the explosion measurement equipment needs to be recovered after each test to reduce the test cost. For small-equivalent explosion tests, the equipment can be withdrawn manually after the test; for large-equivalent explosion tests, due to the high risk of the test, the measurement personnel must stay away from the test area during the test, and the explosion measurement equipment is very likely to sink into the sea with the test platform. The manual withdrawal of the equipment has high risks and untimely release, causing irreversible losses. At present, the explosion measurement equipment is mainly released by remote control in the test, and the equipment is automatically released by sending instructions to the release device manually. However, the remote control method has certain requirements for communication distance, electromagnetic environment, etc., and the reliability under long-distance remote control is not good. In addition, for some test conditions that require test water depth, the explosion measurement device needs to be in a certain water depth with the object to be tested to carry out the test. The wired remote control method is not suitable for long-distance signal transmission, and the wireless remote control is limited by cross-medium signal transmission and cannot reliably transmit signals. Therefore, the development of a marine explosion measurement equipment release system that can be automatically released according to water depth requirements is of great significance to improving the anti-explosion and anti-shock performance test of marine equipment. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a release device for offshore explosive measurement equipment based on water pressure signals, which is suitable for the automatic release system of offshore explosive measurement equipment under certain water depth conditions. According to the corresponding relationship between water depth and water pressure, the water depth is judged by measuring the current water pressure to determine the time for the measurement equipment to be released.

[0004] Technical solution: In order to solve the above technical problems, the present invention provides a release device for offshore explosion measurement equipment based on water pressure signals, including a test platform, on which measurement equipment and a release device are installed, and both the measurement equipment and the release device are fixed to the test platform by a fixing device, and a water pressure sensor is installed on the release device. After the water pressure sensor collects a water depth signal exceeding a threshold value, the release device works, the fixing device is released, and the measurement equipment is rescued.

[0005] Preferably, the fixing device comprises a fixing rope, the fixing rope passes through the measuring equipment and the release device, and both ends of the fixing rope are fixed on the test platform through ground rods.

[0006] Preferably, a buffer is installed below the release device, and the buffer includes a main body and two layers of buffer devices. The first layer of buffer device is a vertical buffer device; the second layer of buffer device is composed of a transverse buffer device and a longitudinal buffer device. The first layer of buffer device is arranged on the main body, the first layer of buffer device is located below the release device, and the second layer of buffer device is located circumferentially of the release device, and one end of the second layer of buffer device is fixed on the main body.

[0007] Preferably, the release device comprises a shell, the fixing rope passes through the shell, and a cutting device is arranged inside the shell, and the cutting device cuts the fixing rope.

[0008] Preferably, the cutting device includes a cutting knife, a motor, a motor base, a slide rail and a limit device. The shell is provided with a pair of rope holes, and the fixed rope passes through the rope holes. A slide rail is installed inside the shell, and a motor base is installed on the slide rail. The motor base is connected to the cutting knife, and a limit device is provided on the slide rail. The cutting knife is driven by the motor to cut the fixed rope.

[0009] Preferably, a recovery device and a controller are installed on the side of the housing, and the controller is connected to the motor and the water pressure sensor signal. After the water pressure sensor collects a water depth signal exceeding a threshold, the controller sends a cutting instruction to the cutting device, and the motor starts to work, driving the cutting knife to rotate at high speed, and the motor base moves along the slide rail toward the fixed rope side. When the motor base moves to the limit device, the motor base stops moving, and the controller sends a recovery instruction to the recovery device to make the release device float to the water surface.

[0010] Preferably, both ends of the motor are provided with output shafts, which are the first output shaft and the second output shaft respectively. The first output shaft is connected to the cutting knife, the second output shaft is connected to the reduction mechanism, the reduction mechanism is connected to the moving gear, and a rack is provided on the slide rail. The moving gear drives the motor base to move along the slide rail through the rack.

[0011] Preferably, the recovery device comprises a float storage cabin, a float and a small gas cylinder, the float and the small gas cylinder are located in the float storage cabin, and the float and the small gas cylinder are connected.

[0012] Beneficial effects: The offshore explosion measurement equipment release device based on water pressure signals of the present invention has the following advantages: 1. The device of the present invention and the explosion measurement equipment are on the same test platform and can be automatically released after entering the water without being restricted by distance, environment, medium, etc., and has high release reliability.

[0013] 2. The water pressure sensor of the present invention has a certain measuring range. One sensor can be used to meet the requirements of release under different water depths. The water pressure sensor can also be replaced to meet the requirements of release under different water depths.

[0014] 3. The device of the present invention is equipped with a three-way buffer, which can reduce the impact of the release system during the explosion test and ensure that the release system can work reliably after the test.

[0015] 4. Based on this device, other sensors can be added to customize other control schemes to achieve series and parallel control of multiple control methods.

[0016] 5. The device of the present invention can not only realize the recovery of the measuring equipment, but also realize the recovery of the release device, thereby achieving the purpose of reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the composition of a release system for offshore explosion measurement equipment based on water pressure signals according to the present invention.

[0018] Figure 2 It is a structural schematic diagram of the buffer of the present invention.

[0019] Figure 3 yes Figure 2 sectional view of .

[0020] Figure 4 is a schematic diagram of the controller.

[0021] Figure 5 It is a schematic diagram of the release device. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Embodiment 1: like Figures 1 to 4 As shown, a release device for offshore explosion measurement equipment based on water pressure signals includes a water pressure sensor, a release device 2, and a buffer 3. The water pressure sensor includes a water pressure sensor, a controller, and a packaging shell 13. The water pressure sensor transmits signals to the release device 2 via a communication cable. The water pressure sensor is fixed on the release device 2, and the release device 2 is fixed on the buffer 3. The buffer 3 is fixed on a test platform 5.

[0024] During the test, the tying cable 6 passes through the ground order 7 to sequentially tie the measuring equipment 4, passes through the release device 2, and is fixed to the ground order 7 on the other side of the test platform 5. Before the test begins, ensure that the tying cable 6 is tightened and the measuring equipment 4 and the release system are fastened to the test platform 5.

[0025] The controller receives the water pressure signal measured by the water pressure sensor, and sets different water pressure thresholds in the main control board 2 through programming according to the release depth requirements of the measuring equipment 4. When the measured value of the water pressure sensor exceeds the set water pressure threshold, the controller sends a release command signal to the release device 2 via the signal transmission port and the communication cable.

[0026] The release device 2 starts to work after receiving the release command signal, cuts the binding cable 6 of the measuring equipment, and the measuring equipment 4 is separated from the test platform 5, thereby achieving the purpose of release.

[0027] The buffer 3 is composed of two layers of buffer devices. The first layer of buffer devices is a vertical buffer device 31, which is used to reduce vertical vibration during measurement. The second layer of buffer devices is composed of a transverse buffer device 32 and a longitudinal buffer device 33, which is used to reduce transverse and longitudinal vibrations during measurement.

[0028] Optionally, water pressure sensors with different ranges may be selected according to the release water depth requirement of the measuring equipment 4 .

[0029] Optionally, the release device 3 can select pyrotechnics to cut the binding cables.

[0030] Embodiment 2: like Figure 5 As shown, a release device for offshore explosion measurement equipment based on water pressure signals includes a water pressure sensor, a release device 2, and a buffer 3. The water pressure sensor transmits signals to the release device 2 via a communication cable. The water pressure sensor is fixed on the release device 2, and the release device 2 is fixed on the buffer 3. The buffer 3 is fixed on a test platform 5.

[0031] During the test, the tying cable 6 passes through the ground order 7 to sequentially tie the measuring equipment 4, passes through the release device 2, and is fixed to the ground order 7 on the other side of the test platform 5. Before the test begins, ensure that the tying cable 6 is tightened and the measuring equipment 4 and the release system are fastened to the test platform 5.

[0032] In the present invention, the controller receives the water pressure signal measured by the water pressure sensor. When the water pressure sensor detects that the pressure exceeds a threshold, the controller sends a release command signal to the release device 2 via a signal transmission port and a communication cable.

[0033] In the present invention, the release device 2 starts to work after receiving the release command signal, cuts the binding cable 6 of the measuring equipment, and separates the measuring equipment 4 from the test platform 5, thereby achieving the purpose of release.

[0034] In the present invention, the buffer 3 is composed of two layers of buffer devices. The first layer of buffer devices is a vertical buffer device 31, which is used to reduce vertical vibration during measurement; the second layer of buffer devices is composed of a lateral buffer device 32 and a longitudinal buffer device 33, which is used to reduce lateral and longitudinal vibrations during measurement.

[0035] In the present invention, the release device includes a cutting device, a recovery device, a controller and a rope hole. The cutting device includes a cutting knife, a motor, a motor base, a slide rail and a limit device. The recovery device includes a floating storage compartment, a floating body and a small gas cylinder. When in use, the fixed rope is passed through the rope holes on both sides of the release device, and the fixed rope is kept in a tensioned state. After the water pressure sensor collects a water depth signal exceeding the threshold, the motor starts to work, driving the cutting knife to rotate at high speed, and the motor base moves along the slide rail toward the fixed rope side. When the motor base moves to the limit device, the motor and the motor base stop moving, and a recovery signal is sent to the recovery device. The float pops out from the float storage compartment, and the float is inflated by the small gas cylinder. After the float is inflated, it provides buoyancy for the release device, so that the release device floats to the water surface.

[0036] In the present invention, the release device 2 includes a cutting device 21, a recovery device 22, a controller 23 and a rope hole 24. The cutting device includes a cutting knife 211, a motor 212, a motor base 213, a slide rail 214 and a limit device 215. The structures and interfaces of the motor 212 and the motor base 213 are watertight. The recovery device 22 includes a floating storage compartment 221, a floating body 222, and a small gas cylinder 223. The controller 23 includes a water pressure sensor, a control mainboard 231, a signal transmission port 232 and a power supply port 233. The probe of the water pressure sensor is exposed outside the controller housing, and the entire housing of the controller 23 is watertight. Output shafts are provided at both ends of the motor, namely a first output shaft and a second output shaft, the first output shaft is connected to the cutting knife, the second output shaft is connected to the speed reduction mechanism, the speed reduction mechanism is connected to the motion gear, a rack is provided on the slide rail, and the motion gear drives the motor base to move along the slide rail through the rack.

[0037] When the present invention is used, the fixing rope is passed through the rope holes 24 on both sides of the release device, and the fixing rope is kept in a tensioned state. After the water pressure sensor collects a water depth signal exceeding the threshold, the controller 23 sends a cutting command to the cutting device 21, and the motor 212 starts to work, driving the cutting knife 211 to rotate at high speed, and the motor base 213 moves toward the fixing rope side along the slide rail 214. When the motor base 213 moves to the limit device 214, the motor base 213 stops moving, and the controller 23 sends a recovery command to the recovery device 22, and the float 222 pops out from the float storage cabin 221, and the small gas cylinder 223 inflates the float 222. After the float 222 is inflated, it provides buoyancy for the release device 2, so that the release device 2 floats to the water surface.

Claims

1. A release device for offshore explosion measurement equipment based on water pressure signals, characterized in that: The method comprises a test platform, on which measuring equipment and a release device are installed, both of which are fixed on the test platform by a fixing device, a water pressure sensor is installed on the release device, and after the water pressure sensor collects a water depth signal exceeding a threshold value, the release device works, the fixing device is released, and the measuring equipment is freed.

2. The release device for offshore explosion measurement equipment based on water pressure signal according to claim 1 is characterized in that: The fixing device comprises a fixing rope, the fixing rope passes through the measuring equipment and the release device, and the two ends of the fixing rope are fixed on the test platform through ground rods.

3. The release device for offshore explosion measurement equipment based on water pressure signal according to claim 2 is characterized in that: A buffer is installed below the release device, and the buffer includes a main body and two layers of buffer devices. The first layer of buffer device is a vertical buffer device; the second layer of buffer device is composed of a transverse buffer device and a longitudinal buffer device. The first layer of buffer device is arranged on the main body, the first layer of buffer device is located below the release device, the second layer of buffer device is located circumferentially of the release device, and one end of the second layer of buffer device is fixed on the main body.

4. The release device for offshore explosion measurement equipment based on water pressure signal according to claim 2 is characterized in that: The release device comprises a shell, the fixing rope passes through the shell, and a cutting device is arranged inside the shell, and the cutting device cuts the fixing rope.

5. The release device for offshore explosion measurement equipment based on water pressure signal according to claim 4 is characterized in that: The cutting device includes a cutting knife, a motor, a motor base, a slide rail and a limit device. A pair of rope holes are provided on the shell, and a fixed rope passes through the rope holes. A slide rail is installed inside the shell, and a motor base is installed on the slide rail. The motor base is connected to the cutting knife, and a limit device is provided on the slide rail. The cutting knife is driven by the motor to cut the fixed rope.

6. The release device for offshore explosion measurement equipment based on water pressure signal according to claim 5 is characterized in that: A recovery device and a controller are installed on the side of the shell, and the controller is connected with the motor and the water pressure sensor signal. After the water pressure sensor collects a water depth signal exceeding the threshold, the controller sends a cutting instruction to the cutting device, the motor starts to work, drives the cutting knife to rotate at high speed, and the motor base moves along the slide rail toward the fixed rope side; when the motor base moves to the limit device, the motor base stops moving, and the controller sends a recovery instruction to the recovery device to make the release device float to the water surface.

7. The release device for offshore explosion measurement equipment based on water pressure signal according to claim 6 is characterized by: The recovery device comprises a floating body storage cabin, a floating body and a small gas cylinder. The floating body and the small gas cylinder are located in the floating body storage cabin, and the floating body and the small gas cylinder are connected.

8. The release device for offshore explosion measurement equipment based on water pressure signal according to claim 6 is characterized by: Both ends of the motor are provided with output shafts, which are the first output shaft and the second output shaft respectively. The first output shaft is connected to the cutting knife, and the second output shaft is connected to the reduction mechanism, and the reduction mechanism is connected to the moving gear. A rack is provided on the slide rail, and the moving gear drives the motor base to move along the slide rail through the rack.

Images