Observation window for PIV underwater observation

Abstract

The utility model belongs to the technical field of observation windows, and particularly relates to an observation window for PIV underwater observation, which comprises a base, the upper end of the base is in contact with a pressing plate, quartz glass is arranged in the base, a first sealing O-shaped ring is arranged in the base, the first sealing O-shaped ring is in contact with the quartz glass, and a second sealing O-shaped ring is arranged in the base. A first sealing O-shaped ring is arranged on the pressing plate, a second sealing O-shaped ring is arranged in the base, and the second sealing O-shaped ring is in contact with the quartz glass. By designing components such as the annular groove, the sliding block, the supporting ring, the guide block, the sliding rod and the pull rod, the sliding block is pulled to move, after the sliding block moves to a designated position, the cross-recessed countersunk bolt, the connecting sleeve and the annular groove are installed at designated positions in the pressing plate, then the sliding block moves into the annular groove, and then the cross-recessed countersunk bolt is limited; and the cross recess countersunk bolt is prevented from loosening after the observation window is used for a long time.

Description

Technical Field

[0001] This utility model relates to the field of observation window technology, specifically an observation window for PIV underwater observation. Background Technology

[0002] With the continuous development of science and technology, many technical issues related to ships are constantly being raised, such as PIV (Particle Image Velocimetry) experiments. The observation window for PIV underwater observation is usually made of transparent, watertight material. When designing the observation window, its size, shape, and position must be considered to ensure researchers obtain accurate and reliable experimental data. There are many different designs and material options for PIV underwater observation windows, and the appropriate type can be selected based on specific experimental needs. For example, utility model patent CN210670356U discloses an underwater observation device, including a waterproof shell, a controller housed within the waterproof shell, a camera device, a display device, and a power supply all connected to the controller. The waterproof shell has a sealed camera window at its front end and a sealed display window at its rear end. The camera device captures real-time video through the camera window and transmits the first video signal to the controller. The controller then transmits the first video signal to the display device for viewing through the display window by underwater personnel. This underwater observation device ensures waterproofing, allows real-time camera recording, enables the display device to view the video through the waterproof shell, and allows underwater personnel to observe more clearly and carefully. It also boasts good endurance and high waterproof performance. However, in the prior art, when the observation window is used for extended periods, the lack of a limiting mechanism makes it difficult to limit the movement of the countersunk head bolts, leading to loosening of these bolts over time. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this utility model is to provide an observation window for PIV underwater observation, which solves the problem that when the observation window is used for a long time, the lack of a limiting mechanism makes it difficult to limit the cross-slot countersunk bolts, which leads to the easy loosening of the cross-slot countersunk bolts after long-term use.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an observation window for PIV underwater observation, comprising a base, a pressure plate at the upper end of the base, quartz glass inside the base, a first sealing O-ring inside the base in contact with the quartz glass, a first sealing O-ring on the pressure plate, a second sealing O-ring inside the base in contact with the quartz glass, a POM gasket inside the base, a rubber gasket inside the POM gasket in contact with the base, a cross-slot countersunk bolt threaded into the base in contact with the pressure plate, a connecting sleeve fixedly connected to the outside of the cross-slot countersunk bolt in contact with the pressure plate, and a limit mechanism inside the pressure plate.

[0005] Preferably, the limiting mechanism includes an annular groove. The connecting sleeve has an annular groove inside, and a slider is slidably connected inside the annular groove. A support ring is fixedly connected to the end of the slider away from the annular groove. The pressure plate is slidably connected to the support ring. A sliding rod is fixedly connected to the side of the support ring away from the slider. A pull rod is fixedly connected to the end of the sliding rod away from the support ring. The pressure plate is slidably connected to the pull rod. A sliding plate is fixedly connected to the upper end of the pull rod. The upper end of the pressure plate contacts the sliding plate. The pressure plate is slidably connected to the sliding rod. A spring is provided on the outer side of the sliding rod. The pressure plate is slidably connected to the slider. By pulling the slider, after it moves to a designated position, the cross-slot countersunk bolt, the connecting sleeve, and the annular groove are installed in the designated position within the pressure plate. Then, the slider is moved into the annular groove, thereby limiting the cross-slot countersunk bolt and preventing it from loosening during prolonged use.

[0006] Preferably, the pressure plate has a guide block that is slidably connected inside, and the guide block is fixedly connected to the support ring. By designing the guide block, the support ring can be guided.

[0007] Preferably, a handle is fixedly connected to the upper end of the sliding plate. The handle is made of iron, which makes the handle more durable.

[0008] Preferably, a sealing sleeve is fixedly fitted inside the sliding plate, and the sealing sleeve is in contact with the pressure plate. By designing the sealing sleeve, the connection between the pressure plate and the sliding plate can be sealed.

[0009] Preferably, one end of the spring is fixedly connected to the support ring, and the other end of the spring is fixedly connected to the pressure plate. By designing the spring, the support ring has an elastic force.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] This utility model designs components such as an annular groove, slider, support ring, guide block, slide rod, and pull rod to move the slider. After the slider moves to the designated position, the cross-slot countersunk bolt, connecting sleeve, and annular groove are installed in the designated position in the pressure plate. Then, the slider is moved into the annular groove, thereby limiting the cross-slot countersunk bolt and preventing it from loosening after long-term use of the observation window. Attached Figure Description

[0012] Figure 1 This is a front sectional view of the overall structure of this utility model;

[0013] Figure 2 This utility model Figure 1 Enlarged view of the connecting sleeve;

[0014] Figure 3 This utility model Figure 2 Enlarged view of point A;

[0015] Figure 4 This utility model Figure 1 Top view of the connecting sleeve.

[0016] In the diagram: 1. Base; 2. Pressure plate; 3. Quartz glass; 4. First sealing O-ring; 5. Second sealing O-ring; 6. POM gasket; 7. Rubber gasket; 8. Cross-groove countersunk bolt; 9. Connecting sleeve; 10. Limiting mechanism; 101. Annular groove; 102. Slider; 103. Support ring; 104. Guide block; 105. Slide rod; 106. Pull rod; 107. Sliding plate; 108. Handle; 109. Sealing sleeve; 1010. Spring. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-4An observation window for PIV underwater observation includes a base 1, a pressure plate 2 at the upper end of the base 1, a quartz glass 3 inside the base 1, a first sealing O-ring 4 inside the base 1 in contact with the quartz glass 3, a first sealing O-ring 4 on the pressure plate 2, a second sealing O-ring 5 inside the base 1 in contact with the quartz glass 3, a POM gasket 6 inside the base 1, a rubber gasket 7 inside the POM gasket 6 in contact with the base 1, a cross-slot countersunk bolt 8 threadedly connected inside the base 1 in contact with the pressure plate 2, a connecting sleeve 9 fixedly connected to the outside of the cross-slot countersunk bolt 8 in contact with the pressure plate 2, and a limit mechanism 10 inside the pressure plate 2.

[0019] Please see Figure 2 , Figure 3 The limiting mechanism 10 includes an annular groove 101. The connecting sleeve 9 has an annular groove 101 inside. A slider 102 is slidably connected inside the annular groove 101. A support ring 103 is fixedly connected to the end of the slider 102 away from the annular groove 101. A guide block 104 is slidably connected inside the pressure plate 2. The guide block 104 is fixedly connected to the support ring 103. By designing the guide block 104, the support ring 103 can be guided. The pressure plate 2 is slidably connected to the support ring 103. A slide rod 105 is fixedly connected to the side of the support ring 103 away from the slider 102. A pull rod 106 is fixedly connected to the end of the slide rod 105 away from the support ring 103. The pressure plate 2 is slidably connected to the pull rod 106. A sliding plate 107 is fixedly connected to the upper end of the pull rod 106. A handle 108 is fixedly connected to the upper end of the sliding plate 107. The handle 108 is made of iron. By designing the handle 108 to be made of iron, the handle 108 becomes more durable.

[0020] Please see Figure 2 , Figure 3A sealing sleeve 109 is fixedly fitted inside the sliding plate 107. The sealing sleeve 109 contacts the pressure plate 2. By designing the sealing sleeve 109, the connection between the pressure plate 2 and the sliding plate 107 can be sealed. The upper end of the pressure plate 2 contacts the sliding plate 107. The pressure plate 2 is slidably connected to the slide rod 105. A spring 1010 is provided on the outside of the slide rod 105. One end of the spring 1010 is fixedly connected to the support ring 103, and the other end of the spring 1010 is fixedly connected to the pressure plate 2. By designing the spring 1010, the support ring 103 has an elastic force. The pressure plate 2 is slidably connected to the slider 102. By pulling the slider 102, after the slider 102 moves to the designated position, the cross-slot countersunk bolt 8, the connecting sleeve 9, and the annular groove 101 are installed in the designated position inside the pressure plate 2. Then the slider 102 is moved into the annular groove 101, thereby limiting the cross-slot countersunk bolt 8 and preventing the cross-slot countersunk bolt 8 from loosening after long-term use of the observation window.

[0021] The specific implementation process of this utility model is as follows: When the observation window is in use, pull the handle 108 to move away from the spring 1010. The movement of the handle 108 causes the sliding plate 107 to move. The movement of the sliding plate 107 causes the sealing sleeve 109 and the pull rod 106 to move. The movement of the pull rod 106 causes the sliding rod 105 to move. The movement of the sliding rod 105 causes the support ring 103 to move. The movement of the support ring 103 causes the slider 102 and the guide block 104 to move. After the slider 102 moves to the designated position, the connecting sleeve 9 moves. The movement of the connecting sleeve 9 causes the annular groove 101 and the cross-slot countersunk bolt 8 to move. The cross-slot countersunk bolt 8 moves and is inserted from the designated position of the pressure plate 2. The cross-slot countersunk bolt 8 and the annular groove 101 rotate within the base 1. The rotation of the connecting sleeve 9 causes the cross-slot countersunk bolt 8 and the annular groove 101 to rotate. The rotation of the cross-slot countersunk bolt 8 causes the base 1 to move, which in turn causes the cross-slot countersunk bolt 8 to have a relative displacement. After the cross-slot countersunk bolt 8, the connecting sleeve 9 and the annular groove 101 rotate to the designated position, the handle 108 is released. The elastic force of the spring 1010 pushes the support ring 103 to move. The movement of the support ring 103 causes the slider 102 and other components to move. The slider 102 moves into the annular groove 101, which limits the cross-slot countersunk bolt 8 and prevents the cross-slot countersunk bolt 8 from loosening after long-term use of the observation window.

[0022] 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. An observation window for PIV underwater observation, comprising a base (1), characterized in that: The upper end of the base (1) is in contact with a pressure plate (2). Quartz glass (3) is disposed inside the base (1). A first sealing O-ring (4) is disposed inside the base (1) and contacts the quartz glass (3). The pressure plate (2) is also provided with the first sealing O-ring (4). A second sealing O-ring (5) is disposed inside the base (1) and contacts the quartz glass (3). The pressure plate (2) is also provided with the second sealing O-ring (5). The base (1) is provided with a POM washer (6) inside, and a rubber pad (7) is provided inside the POM washer (6). The rubber pad (7) is in contact with the base (1). The base (1) is connected to a cross-slot countersunk bolt (8) by a thread. The cross-slot countersunk bolt (8) is in contact with the pressure plate (2). A connecting sleeve (9) is fixedly connected to the outside of the cross-slot countersunk bolt (8). The connecting sleeve (9) is in contact with the pressure plate (2). The pressure plate (2) is provided with a limit mechanism (10).

2. The observation window for PIV underwater observation according to claim 1, characterized in that: The limiting mechanism (10) includes an annular groove (101). The connecting sleeve (9) has an annular groove (101) inside. A slider (102) is slidably connected inside the annular groove (101). A support ring (103) is fixedly connected to one end of the slider (102) away from the annular groove (101). The pressure plate (2) is slidably connected to the support ring (103). A slide rod (105) is fixedly connected to one side of the support ring (103) away from the slider (102). A pull rod (106) is fixedly connected to the end of the slide rod (105) away from the support ring (103). The pressure plate (2) is slidably connected to the pull rod (106). A sliding plate (107) is fixedly connected to the upper end of the pull rod (106). The upper end of the pressure plate (2) contacts the sliding plate (107). The pressure plate (2) is slidably connected to the slide rod (105). A spring (1010) is provided on the outside of the slide rod (105). The pressure plate (2) is slidably connected to the slider (102).

3. The observation window for PIV underwater observation according to claim 2, characterized in that: The pressure plate (2) is internally slidably connected to a guide block (104), which is fixedly connected to a support ring (103).

4. An observation window for PIV underwater observation according to claim 2, characterized in that: A handle (108) is fixedly connected to the upper end of the sliding plate (107), and the handle (108) is made of iron.

5. An observation window for PIV underwater observation according to claim 2, characterized in that: A sealing sleeve (109) is fixedly fitted inside the sliding plate (107), and the sealing sleeve (109) is in contact with the pressure plate (2).

6. An observation window for PIV underwater observation according to claim 2, characterized in that: One end of the spring (1010) is fixedly connected to the support ring (103), and the other end of the spring (1010) is fixedly connected to the pressure plate (2).

Images