Valve body bore detection device

Abstract

The utility model discloses a valve body inner chamber detection device, including handle, control box and outer tube that fixed connection in proper order, the inside of outer tube is equipped with drive cavity one side close to control box, is equipped with slide cavity in the outer tube, and the slide cavity is slidably connected with the slide sleeve, and the slide sleeve is rotatably connected with the movable pipe on, and the one end fixed connection of movable pipe has detection assembly, and the slide sleeve is through and through with movable pipe, and the spline connection of movable pipe has transmission rod in, and transmission rod and outer tube are rotatably connected through the bearing, and the one end of transmission rod extends to drive cavity, and the other end is close to the opening of outer tube, and the outer tube is equipped with the moving mechanism of drive movable pipe axial motion and the rotating mechanism of drive transmission rod rotation in, and detection assembly includes the mount pad fixed connection on movable pipe, and two sets of detection units are arranged respectively in the end face and the side of mount pad, the end face and the side of mount pad are all provided with detection unit, and the side and the end face detection of valve body inner wall can be carried out simultaneously through two sets of detection units, and the detection efficiency and range have been improved.

Description

Technical Field

[0001] This utility model relates to the field of valve body detection technology, specifically a valve body cavity detection device. Background Technology

[0002] Valves are key control components in fluid transport systems. The quality of their inner surface, such as the presence of cracks, sand holes, corrosion, casting defects, and foreign matter residue, directly affects the valve's sealing performance and service life.

[0003] Currently, the inspection of the internal cavity of valve bodies is mostly done manually using a handheld endoscope. During inspection, the probe is inserted into the valve body, and the probe is equipped with only one set of cameras. After inspecting one direction of the valve body, the probe needs to be rotated or its angle changed to inspect another direction of the inner wall. In other words, it is impossible to simultaneously inspect multiple directions of the valve body's inner wall (such as the sides and ends of the inner wall), resulting in low inspection efficiency. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present invention provides a valve body cavity detection device to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A valve body cavity detection device includes: a handle, a control box, and an outer tube fixedly connected in sequence; the outer tube has a drive cavity inside the side near the control box, a sliding cavity inside the outer tube, a sliding sleeve slidably connected inside the sliding cavity, a movable tube rotatably connected to the sliding sleeve via a bearing, one end of the movable tube passing through the outer tube, and a detection component fixedly connected to the passing end, the movable tube communicating with the sliding sleeve, and a transmission rod splined inside the movable tube, the sliding sleeve and the movable tube being able to move axially along the transmission rod, the transmission rod rotatably connected to the outer tube via a bearing, one end of the transmission rod extending into the drive cavity, and the other end near the opening of the outer tube, the outer tube having a moving mechanism for driving the axial movement of the movable tube, and a rotating mechanism for driving the transmission rod to rotate; the detection component includes a mounting base fixedly connected to the movable tube, and two sets of detection units respectively disposed on the end face and side face of the mounting base.

[0006] Preferably, the moving mechanism includes a guide rod and a lead screw fixed in the sliding cavity, and a first motor installed in the drive cavity. One side of the sliding sleeve has a sliding hole, and the other side has a threaded hole. The sliding sleeve is slidably connected to the guide rod through the sliding hole and threadedly connected to the lead screw through the threaded hole. The motor shaft of the first motor is drively connected to the lead screw. Starting the first motor drives the lead screw to rotate, which in turn drives the sliding sleeve to move linearly along the guide rod.

[0007] Preferably, the rotating mechanism includes a second motor mounted in the drive cavity, a first bevel gear connected to the motor shaft of the second motor, and a second bevel gear connected to one end of the transmission rod, with the first and second bevel gears meshing. When the second motor is started, the engagement of the first and second bevel gears drives the transmission rod to rotate, which in turn drives the movable tube to rotate, ultimately rotating the detection assembly. Additionally, the outer tube has heat dissipation holes communicating with the drive cavity to cool the first and second motors.

[0008] Preferably, the detection unit includes an image acquisition unit, an illumination unit, and a distance sensor. The image acquisition unit is a waterproof industrial-grade endoscope camera, and the illumination unit is a ring-shaped LED supplementary light located around the endoscope camera to ensure clear images are obtained even in the complex environment inside the valve. The distance sensor is used to detect the distance between the image acquisition unit and the inner wall of the valve body in real time, facilitating control of the detection distance and ensuring image quality.

[0009] Preferably, the control box contains a PLC controller and a battery, and the side wall of the control box has heat dissipation holes. The control box is equipped with a display screen and control buttons. The mounting base contains an integrated circuit board, and the detection unit is electrically connected to the integrated circuit board. The PLC controller is electrically connected to the battery, the first motor, the second motor, the integrated circuit board, the display screen, and the control buttons. The display screen can simultaneously display images captured by two endoscopic cameras to allow simultaneous viewing of the internal wall detection status.

[0010] In addition, the movable tube is hollow, and both ends of the outer tube have through holes aligned with the center of the movable tube, through which the mounting base and the control box are connected. Wires on the integrated circuit board can pass through the center of the movable tube and extend into the control box, with the extended end connected to a first conductive element. The PLC controller inside the control box is electrically connected to a second conductive element, which is electrically connected to the first conductive element through a conductive slip ring to ensure that the wires are not broken when the movable tube rotates.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The detection component is inserted into the valve body. The moving mechanism moves the movable tube to the outside of the outer tube, bringing the detection component closer to the detection part. The rotating mechanism rotates the movable tube, thereby adjusting the direction of the detection component to detect the detection part, thus improving the detection distance and range.

[0012] In addition, detection units are provided on both the end face and the side face of the mounting base. The two sets of detection units can simultaneously detect the side and end faces of the valve body, improving detection efficiency and range. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the present invention; Figure 2 This is a cross-sectional view of the transmission rod; Figure 3 This is a cross-sectional view of the present invention; In the diagram: 1-Handle, 2-Control box, 3-Outer tube, 4-Sliding cavity, 5-Sliding sleeve, 6-Moving tube, 7-Detection component, 701-Mounting base, 702-Distance sensor, 703-Endoscope camera, 704-LED fill light, 705-Integrated circuit board, 8-Transmission rod, 9-Guide rod, 10-Lead screw, 11-First motor, 12-Second motor, 13-First bevel gear, 14-Second bevel gear. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-3 A valve body cavity detection device includes a handle 1, a control box 2, and an outer tube 3, which are fixedly connected in sequence.

[0016] The outer tube 3 has a drive cavity inside the side near the control box. A sliding cavity 4 is located inside the outer tube 3, and a sliding sleeve 5 is slidably connected within the sliding cavity 4. A movable tube 6 is rotatably connected to the sliding sleeve 5 via a bearing. One end of the movable tube 6 extends out of the outer tube 3 and is fixedly connected to a detection component 7. The movable tube 6 communicates with the sliding sleeve 5, and a transmission rod 8 is splinedly connected inside the movable tube 6. Specifically, the inner wall of the movable tube has a spline groove, and the outer wall of the transmission rod has an external spline. The external spline on the transmission rod 8 connects to the spline groove of the movable tube. Furthermore, the inner diameter of the sliding sleeve is greater than or equal to the combined outer diameter of the transmission rod and the external spline, allowing the sliding sleeve 5 and the movable tube 6 to move axially along the transmission rod 8. Simultaneously, the rotation of the transmission rod drives the movable tube to rotate. The transmission rod 8 is rotatably connected to the outer tube 3 via a bearing. One end of the transmission rod 8 extends into the drive cavity, and the other end is near the opening of the outer tube 3. The outer tube 3 contains a moving mechanism for driving the axial movement of the movable tube 6 and a rotating mechanism for driving the rotation of the transmission rod 8.

[0017] The detection assembly 7 includes a mounting base 701 fixedly connected to the movable tube, and two sets of detection units respectively disposed on the end face and side face of the mounting base 701. Each detection unit includes an image acquisition unit, an illumination unit, and a distance sensor 702. The image acquisition unit is a waterproof industrial-grade endoscope camera 703, and the illumination unit is a ring-shaped LED supplementary light 704 located around the endoscope camera 703 to ensure clear images are obtained in the complex environment inside the valve. The distance sensor is used to detect the distance between the image acquisition unit and the inner wall of the valve body in real time, facilitating control of the detection distance and ensuring image quality.

[0018] The moving mechanism includes a guide rod 9 and a lead screw 10 fixed in the sliding cavity 4, and a first motor 11 installed in the drive cavity. The sliding sleeve 5 has a sliding hole on one side and a threaded hole on the other side. The sliding sleeve 5 is slidably connected to the guide rod 9 through the sliding hole and threadedly connected to the lead screw 10 through the threaded hole. The motor shaft of the first motor 11 is drively connected to the lead screw 10. Starting the first motor drives the lead screw to rotate, which in turn causes the sliding sleeve to move linearly along the guide rod.

[0019] The rotating mechanism includes a second motor 12 installed in the drive cavity, a first bevel gear 13 connected to the motor shaft of the second motor, and a second bevel gear 14 connected to one end of the transmission rod. The first bevel gear 13 and the second bevel gear 14 mesh. When the second motor is started, the transmission rod is driven to rotate through the engagement of the first and second bevel gears. The transmission rod drives the movable tube to rotate, which in turn drives the detection component to rotate.

[0020] In addition, the outer tube has heat dissipation holes that communicate with the drive cavity to dissipate heat from the first motor and the second motor.

[0021] The control box 2 houses a PLC controller and a battery. The control box also features a snap-on cover for easy battery replacement. Ventilation holes are located on the side walls of the control box to dissipate heat from the battery and PLC controller.

[0022] The control box 2 is equipped with a display screen and control buttons. An integrated circuit board 705 is housed within the mounting base 701. The detection unit is electrically connected to the integrated circuit board 705. The PLC controller is electrically connected to the battery, the first motor 11, the second motor 12, the integrated circuit board 705, the display screen, and the control buttons. The display screen can simultaneously show images captured by two endoscopic cameras, allowing for simultaneous observation of the internal wall inspection. Additionally, the movable tube is hollow, with through holes at both ends of the outer tube aligned with the center of the movable tube. These through holes connect the mounting base and the control box. Wires on the integrated circuit board can pass through the center of the movable tube and extend into the control box. The extended ends are connected to a first conductive element. The PLC controller inside the control box is electrically connected to a second conductive element, which is electrically connected to the first conductive element via a conductive slip ring to ensure that the wires are not broken when the movable tube rotates.

[0023] The working principle of this utility model is as follows: The detection component is inserted into the valve body. The moving mechanism moves the movable tube to the outside of the outer tube, bringing the detection component closer to the detection part. The rotating mechanism rotates the movable tube to adjust the direction of the detection component for detection, thereby increasing the detection distance and range.

[0024] During inspection, two sets of inspection units simultaneously inspect the side and end faces of the valve body, and the two sets of images are displayed on the screen so that workers can inspect two different inspection surfaces at the same time.

[0025] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A valve body cavity detection device, characterized in that, include: The handle (1), control box (2) and outer tube (3) are fixedly connected in sequence. The outer tube (3) has a drive cavity inside the side near the control box. The outer tube (3) has a sliding cavity (4). A sliding sleeve (5) is slidably connected inside the sliding cavity (4). A movable tube (6) is rotatably connected to the sliding sleeve (5) through a bearing. One end of the movable tube (6) passes through the outer tube (3) and a detection component (7) is fixedly connected to the end of the tube. The movable tube (6) is connected to the sliding sleeve (5) and a transmission rod (8) is splined inside the movable tube (6). The sliding sleeve (5) and the movable tube (6) can move axially along the transmission rod (8). The transmission rod (8) is rotatably connected to the outer tube (3) through a bearing. One end of the transmission rod (8) extends into the drive cavity, and the other end is close to the opening of the outer tube (3). The outer tube (3) has a moving mechanism for driving the movable tube (6) to move axially and a rotating mechanism for driving the transmission rod (8) to rotate. The detection component (7) includes a mounting base (701) fixedly connected to the movable tube, and two sets of detection units respectively disposed on the end face and side face of the mounting base (701).

2. The valve body cavity detection device according to claim 1, characterized in that: The moving mechanism includes a guide rod (9) and a lead screw (10) fixed in the sliding cavity (4) and a first motor (11) installed in the drive cavity. The sliding sleeve (5) has a sliding hole on one side and a screw hole on the other side. The sliding sleeve (5) is slidably connected to the guide rod (9) through the sliding hole and threadedly connected to the lead screw (10) through the screw hole. The motor shaft of the first motor (11) is connected to the lead screw (10) for transmission.

3. The valve body cavity detection device according to claim 2, characterized in that: The rotating mechanism includes a second motor (12) installed in the drive cavity, a first bevel gear (13) connected to the motor shaft of the second motor, and a second bevel gear (14) connected to one end of the transmission rod, wherein the first bevel gear (13) meshes with the second bevel gear (14).

4. The valve body cavity detection device according to claim 3, characterized in that: The detection unit includes an image acquisition unit, an illumination unit, and a distance sensor (702).

5. The valve body cavity detection device according to claim 4, characterized in that: The image acquisition unit is a waterproof industrial endoscope camera (703), and the lighting unit is a ring-shaped LED fill light (704), which is located around the endoscope camera (703).

6. The valve body cavity detection device according to claim 5, characterized in that: The control box (2) is equipped with a PLC controller and a battery. The control box (2) is equipped with a display screen and control buttons. The mounting base (701) is equipped with an integrated circuit board (705). The detection unit is electrically connected to the integrated circuit board (705). The PLC controller is electrically connected to the battery, the first motor (11), the second motor (12), the integrated circuit board (705), the display screen, and the control buttons.

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