A water pressure balance tracking particle spreading device

Abstract

The present invention belongs to the technical field of flow field tracking, and discloses a water pressure balance tracking particle broadcasting device, including a mounting frame and a storage barrel, a partition is arranged in the storage barrel, the partition divides the storage barrel into a storage chamber and a driving chamber, tracking particles are placed in the storage chamber, a waterproof stepper motor is installed in the driving chamber, the output end of the waterproof stepper motor is fixedly connected with a screw rod, the other end of the screw rod is rotatably connected to the partition, a pushing mechanism is arranged on the screw rod, and the waterproof stepper motor drives the pushing mechanism to move forward and backward through the screw rod, thereby extrapolating and broadcasting the tracking particles in the storage chamber. The particle broadcasting device of the present invention can broadcast the tracking particles evenly at the required speed, and is not affected by the underwater high pressure, so as to facilitate the tracking and identification of the flow field in various ways such as video and laser; it can directly feedback the local motion state of the fluid, and realize accurate process state tracking.

Description

Technical Field

[0001] The invention belongs to the technical field of flow field tracking, and in particular relates to a water pressure balance tracking particle spreading device. Background Art

[0002] Flow field tracking is a very important research method in the field of fluid research. Flow field tracking mainly uses smoke and dye tracking technology. Among them, smoke tracking is used in the field of gas medium tracking, and dye tracking is used in the field of liquid medium tracking. By spreading tracking smoke / dye in the boundary layer, the flow state is analyzed. This method is mainly used for tracking laminar fluids and is only suitable for stable tracking conditions under laboratory conditions.

[0003] The existing flow field tracking technology has the following problems: 1). It mainly focuses on laminar flow tracking, the optical environment for tracking is relatively simple, and the impact of interfering particles is less considered; 2). Existing devices are mainly used under laboratory conditions and have not been applied in practice; 3). There are many suspended particles in the underwater environment, and suspended particles of different shapes and sizes will interfere with the recognition and tracking accuracy of the tracking equipment; 4). Limitations: It is mainly used for laminar flow tracking and cannot be applied to turbulent flow. The tracking medium will disperse under turbulent conditions, resulting in unstable tracking signals.

[0004] In order to meet the needs of video tracking technology, particle tracking can be used to analyze the motion state of each part of the fluid through video analysis technology. However, it is difficult for existing particle spreading devices to adjust the spreading speed of tracking particles, and it is difficult to smoothly release tracking particles under high pressure conditions underwater. Summary of the invention

[0005] In view of this, the object of the present invention is to provide a water pressure balanced tracking particle scattering device. The present invention aims to solve the problem that the existing particle scattering device is difficult to adjust the scattering speed of the tracking particles and is difficult to smoothly release the tracking particles under high pressure conditions underwater.

[0006] To achieve the above-mentioned purpose, the present invention provides a water pressure balance tracking particle sowing device, comprising a mounting frame and a material storage barrel arranged on the mounting frame, wherein a partition is arranged in the material storage barrel, and the partition divides the material storage barrel into a material storage chamber and a driving chamber, wherein tracking particles are placed in the material storage chamber, and a waterproof stepping motor is installed in the driving chamber, wherein a screw rod is fixedly connected to the output end of the waterproof stepping motor, and the other end of the screw rod is rotatably connected to the partition, and a pushing mechanism is arranged on the screw rod, and the waterproof stepping motor drives the pushing mechanism to move forward and backward through the screw rod, thereby pushing and sowing the tracking particles in the material storage chamber; The particle spreading device is also equipped with a controller, and the waterproof stepping motor is electrically connected to the controller.

[0007] Furthermore, the entire storage cavity of the storage barrel is used to store tracking particles, and a discharge port is provided at one end of the storage cavity away from the driving cavity, and an electrically controlled switching valve is installed at the discharge port. A loading port communicating with the storage cavity is provided on the outside of the storage barrel, and a sealing cover is provided at the loading port.

[0008] Furthermore, the pushing mechanism includes a push plate arranged in the material storage chamber, a piston is fixedly connected to the side of the push plate away from the driving chamber, the piston is tightly slidably connected to the inner wall of the material storage chamber, a push rod is fixedly connected to the middle part of the push plate and passes through the partition and extends into the driving chamber, a cross plate is provided on the push rod, and a transmission nut threadedly connected to the screw rod is provided on the cross plate.

[0009] Furthermore, a plurality of storage barrels are arranged in the storage cavity of the storage barrel, the diameter of the storage barrels is slightly larger than the diameter of the tracking particles, and one storage barrel can only hold one row of tracking particles. A miniature waterproof motor is installed at the end of the storage barrel away from the driving cavity, and a cover plate is fixedly connected to the output end of the miniature waterproof motor, and the cover plate is rotatably connected to the storage barrel, and through holes are opened on the cover plate at the position corresponding to the storage barrel.

[0010] Furthermore, the pushing mechanism includes a support plate threadedly connected to the screw rod, and the support plate is fixedly connected to a push rod at a position corresponding to the storage barrel. Each push rod penetrates the partition and extends into the storage barrel and is fixedly connected to a push plate and a piston. The piston is tightly slidably connected to the inner wall of the storage barrel.

[0011] Furthermore, an encoder and a travel switch are also provided in the driving cavity.

[0012] Furthermore, the pushing mechanism pushes and spreads the tracking particles at a speed of 0.1kg / h - 1.0kg / h.

[0013] Furthermore, the storage capacity of the tracking particles in the storage barrel is 5kg - 10kg.

[0014] Furthermore, a fairing is provided on the mounting frame, and the fairing is used to reduce the influence of the particle spreading device on the original fluid.

[0015] The beneficial effects of the present invention are: 1. The present invention can evenly spread tracking particles at the required speed and is not affected by underwater high pressure, making it easy to track and identify flow fields in a variety of ways such as video and laser.

[0016] 2. The particle spreading device of the present invention can be installed in the underwater part of the vehicle, and the externally discharged tracking particles are mixed with the fluid, which can directly feedback the local motion state of the fluid and realize accurate process state tracking.

[0017] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the particle spreading device in Example 1; Figure 2 It is a top cross-sectional view of the storage barrel in Example 1; Figure 3 It is the control logic diagram of the stepper motor of the particle spreading device; Figure 4 It is a top cross-sectional view of the storage barrel in Example 2; The reference numerals in the figure are as follows: storage barrel 1, tracking particles 2, piston 3, screw rod 4, waterproof stepping motor 5, mounting frame 6, charging port 7, electric control switch valve 8, fairing 9, support plate 10, storage barrel 11, micro waterproof motor 12, cover plate 13. DETAILED DESCRIPTION

[0019] In order to make the technical solutions, advantages and purposes of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of this application. Example 1.

[0020] like Figure 1 and Figure 2 As shown, the present invention provides a water pressure balanced tracking particle scattering device, including a mounting frame 6 and a storage barrel 1 arranged on the mounting frame 6, a partition is arranged in the storage barrel 1, the partition divides the storage barrel 1 into a storage chamber and a driving chamber, tracking particles 2 are placed in the storage chamber, a waterproof stepping motor 5 is installed in the driving chamber, the output end of the waterproof stepping motor 5 is fixedly connected to a screw rod 4, the left end of the screw rod 4 is rotatably connected to the partition, the screw rod 4 is connected to a pushing mechanism, and the waterproof stepping motor 5 drives the pushing mechanism to move forward and backward through the screw rod 4, thereby pushing and scattering the tracking particles 2 in the storage chamber.

[0021] In this embodiment, the entire storage cavity of the storage barrel 1 is used to store the tracking particles 2. A discharge port is provided at the left end of the storage cavity, and an electrically controlled switching valve 8 is installed on the discharge port. A loading port 7 communicating with the storage cavity is provided on the outer side of the storage barrel 1, and a sealing cover is threadedly connected to the loading port 7.

[0022] In this embodiment, the pushing mechanism includes a push plate arranged in the material storage chamber, a piston 3 is fixedly connected to the left side of the push plate, the piston 3 is tightly slidably connected to the inner wall of the material storage chamber, a push rod is fixedly connected to the middle of the right side of the push plate and passes through the partition and extends into the driving chamber, a cross plate is fixedly connected to the right end of the push rod, and a transmission nut threadedly connected to the screw rod 4 is arranged on the cross plate.

[0023] As a preferred embodiment of this embodiment, an encoder and a travel switch are also installed in the driving chamber. The encoder is used to monitor the travel of the piston 3. Two travel switches are provided to feedback the lower limit position and the upper limit position of the piston 3.

[0024] As a preferred embodiment of the present invention, the pushing mechanism pushes and spreads the tracking particles 2 at a speed of 0.1 kg / h-1.0 kg / h.

[0025] As a preferred embodiment of this embodiment, the storage capacity of the tracking particles 2 in the optical storage barrel 1 is 5kg - 10kg.

[0026] As a preferred embodiment of this embodiment, a fairing 9 is installed on the mounting frame 6, and the fairing 9 is used to reduce the impact of the particle spreading device on the original fluid.

[0027] The particle spreading device of the present invention is also equipped with a controller, and the waterproof stepping motor 5, the encoder, the travel switch and the electrically controlled switch valve are all electrically connected to the controller.

[0028] The operation process of the water pressure balance tracking particle spreading device in this embodiment is as follows: First, the mounting frame 6 is mounted on the outside of the ship or diving equipment through the external connection interface of the mounting frame 6. Then the particle spreading device of the present invention is started. The controller first initializes each component and checks the status of the encoder, travel switch and other components. The control logic of the controller is as follows: Figure 3As shown. When the device starts working, the controller controls the stepper motor to rotate according to the preset spreading speed requirement (between 0.1kg / h - 1.0kg / h), and the stepper motor drives the screw 4 to rotate, and converts the force of the screw 4 rotation into the force to drive the push rod to move forward and backward through the transmission nut. The push rod drives the push plate and the piston 3 to move synchronously, so as to push out the tracking particles 2 at the front end of the storage barrel 1. The electric control switch valve 8 is linked with the piston 3 to open, so that the tracking particles 2 are spread into the external fluid. During the working process, the encoder monitors the stroke of the piston 3 in real time, and the stroke switch feeds back the upper and lower limit positions of the piston 3. The controller adjusts the rotation speed of the stepper motor in real time according to these signals and the remaining tracking particle 2 reserves and other information to ensure that the tracking particle 2 spreading speed is adapted to different fluid flow speeds, and continuously monitors the number of remaining tracking particles 2. When the tracking particle 2 reserves are close to the lower limit (estimated according to the working time and spreading speed), a prompt signal can be issued. When the device stops working, the electric control switch valve 8 is closed to prevent the tracking particles 2 from scattering.

[0029] The tracking particles 2 are mixed with the external fluid, and the movement of the particles in the fluid is recorded by the matching video tracking equipment, and the movement state of each particle is determined by the video analysis algorithm, so as to obtain the accurate flow state of the fluid. Example 2.

[0030] like Figure 4 As shown, this embodiment provides a water pressure balance tracking particle broadcasting device, which is different from the first embodiment in that: in this embodiment, the storage cavity of the storage barrel 1 is cylindrical, and a plurality of storage barrels 11 are arranged in the storage cavity. The diameter of the storage barrel 11 is slightly larger than the diameter of the tracking particles 2. One storage barrel 11 can only hold one row of tracking particles 2. A micro waterproof motor 12 is installed at the left end of the storage barrel 1. The output end of the micro waterproof motor 12 is fixedly connected with a cover plate 13. The cover plate 13 is rotatably connected to the storage barrel 1. The position of the cover plate 13 corresponding to the storage barrel 11 is provided with a through hole, and the diameter of the through hole is equal to the diameter of the storage barrel 11. The pushing mechanism of this embodiment includes a support plate 10 threadedly connected to the screw rod 4. The position of the support plate 10 corresponding to the storage barrel 11 is fixedly connected with a push rod. Each push rod penetrates the partition and extends into the storage barrel 11. It is fixedly connected with a push plate and a piston 3. The piston 3 is closed and slidably connected with the inner wall of the storage barrel 11. The rest of the structure of this embodiment is the same as that of the first embodiment.

[0031] The particle spreading process of this embodiment is as follows: first start the micro waterproof motor 12, and the micro waterproof motor 12 drives the cover plate 13 to rotate, so that the through hole on the cover plate 13 is facing the corresponding storage barrel 11, so as to subsequently spread the tracking particles 2. The controller controls the stepper motor to rotate according to the preset spreading speed requirement (between 0.1kg / h - 1.0kg / h), and the stepper motor drives the screw rod 4 to rotate. Due to the limiting effect of the push rod, the screw rod 4 drives the support plate 10 to move forward and backward, and then drives the push rod and the piston 3 to move synchronously, so as to push out the tracking particles 2 at the front end of the storage barrel 1. After the tracking particles 2 are spread, start the micro waterproof motor 12 to reverse, so that the through hole on the cover plate 13 is misaligned with the storage barrel 11, and the storage barrel 11 is sealed to prevent the tracking particles 2 from flowing out. The particle spreading device of this embodiment can accurately control the spreading amount of the tracking particles 2, and can discharge all the tracking particles 2 in the storage barrel 1 without residue.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the protection scope of the present invention.

Claims

1. A hydraulic pressure balance tracking particle spreading device, characterized in that: It comprises a mounting frame (6) and a material storage barrel (1) arranged on the mounting frame (6), wherein a partition is arranged in the material storage barrel (1), wherein the partition divides the material storage barrel (1) into a material storage chamber and a driving chamber, wherein tracking particles (2) are placed in the material storage chamber, wherein a waterproof stepping motor (5) is installed in the driving chamber, wherein the output end of the waterproof stepping motor (5) is fixedly connected to a screw rod (4), wherein the other end of the screw rod (4) is rotatably connected to the partition, wherein a pushing mechanism is arranged on the screw rod (4), wherein the waterproof stepping motor (5) drives the pushing mechanism to move forward and backward through the screw rod (4), thereby pushing and spreading the tracking particles (2) in the material storage chamber; The particle spreading device is also equipped with a controller, and the waterproof stepping motor (5) is electrically connected to the controller.

2. A water pressure balance tracking particle spreading device according to claim 1, characterized in that: The entire storage chamber of the storage barrel (1) is used to store tracking particles (2); an end of the storage chamber away from the driving chamber is provided with a discharge port, and an electrically controlled switch valve (8) is installed at the discharge port; a loading port (7) communicating with the storage chamber is provided on the outside of the storage barrel (1), and a sealing cover is provided at the loading port (7).

3. A water pressure balance tracking particle spreading device according to claim 2, characterized in that: The pushing mechanism comprises a pushing plate arranged in the material storage chamber, a piston (3) being fixedly connected to a side of the pushing plate away from the driving chamber, the piston (3) being slidably connected to the inner wall of the material storage chamber in a sealed manner, a pushing rod which penetrates the partition and extends into the driving chamber being fixedly connected to the middle of the pushing plate, a cross plate being provided on the pushing rod, and a transmission nut which is threadedly connected to the screw rod (4) being provided on the cross plate.

4. The water pressure balance tracking particle spreading device according to claim 1, characterized in that: A plurality of storage barrels (11) are arranged in the storage chamber of the storage barrel (1), the diameter of the storage barrel (11) is slightly larger than the diameter of the tracking particles (2), and one storage barrel (11) can only hold one row of tracking particles (2). A micro waterproof motor (12) is installed at one end of the storage barrel (1) away from the driving chamber, and a cover plate (13) is fixedly connected to the output end of the micro waterproof motor (12). The cover plate (13) is rotatably connected to the storage barrel (1), and through holes are provided on the cover plate (13) at positions corresponding to the storage barrel (11).

5. A water pressure balance tracking particle spreading device according to claim 4, characterized in that: The pushing mechanism comprises a support plate (10) threadedly connected to the screw rod (4); the support plate (10) is fixedly connected to a push rod at a position corresponding to the storage barrel (11); each push rod penetrates a partition plate and extends into the storage barrel (11) and is fixedly connected to a push plate and a piston (3); the piston (3) is tightly slidably connected to the inner wall of the storage barrel (11).

6. The water pressure balance tracking particle spreading device according to claim 1, characterized in that: An encoder and a travel switch are also arranged in the driving cavity.

7. The water pressure balance tracking particle scattering device according to claim 1, characterized in that: The pushing mechanism pushes the tracking particles (2) at a speed of 0.1 kg / h - 1.0 kg / h.

8. The water pressure balance tracking particle scattering device according to claim 1, characterized in that: The storage volume of the tracking particles (2) in the storage barrel (1) is 5kg to 10kg.

9. The hydraulic pressure balance tracking particle scattering device according to claim 1, characterized in that: The installation frame (6) is provided with a fairing (9), and the fairing (9) is used to reduce the impact of the particle spreading device on the original fluid.

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