A load cell structure for use in underwater high pressure applications

Abstract

This utility model relates to the field of force sensor technology and discloses a force sensor structure for underwater high-pressure resistance, including a housing and a load cell. The inner wall of the housing has a slot and a threaded hole. A plug is fixedly installed at the bottom of the load cell. This force sensor structure for underwater high-pressure resistance allows for quick installation of the load cell through the cooperation of the plug with the slot and bolt, and the threaded hole with the threaded hole. After prolonged use, it facilitates maintenance or replacement. The sealing rings, made of rubber, have good elasticity and sealing performance, effectively preventing water from seeping into the load cell through the gap between the load-bearing slider and the housing. This significantly reduces the risk of water seepage damaging internal components in the high-pressure underwater environment, ensuring the normal operation of the load cell and extending its service life and maintenance cycle.

Description

Technical Field

[0001] This utility model relates to the field of force sensor technology, specifically a force sensor structure for withstanding high pressure underwater. Background Technology

[0002] The high-pressure force sensor employs a pressure-resistant, sealed design. Its core structure includes a sensing element, a pressure-bearing housing, and a signal transmission module. The sensing element typically uses strain gauges or piezoelectric crystals, converting force deformation into an electrical signal. The housing is made of high-strength alloy or titanium alloy, sealed by welding or O-rings to resist deep-water pressure penetration. An internal pressure compensation device balances the internal and external pressure differences, preventing water pressure from interfering with force measurement accuracy. Signal transmission uses waterproof cables or wireless modules to ensure stable data transmission. The sensor surface undergoes anti-corrosion treatment to adapt to harsh environments such as seawater. The overall structure undergoes high-pressure chamber testing to ensure accurate force measurement even at depths of thousands of meters. It is widely used in underwater engineering, marine exploration, and other fields.

[0003] Chinese Utility Model Patent Publication No. CN203132911U discloses a high-pressure indoor underwater sensor device. The specification of this high-pressure indoor underwater sensor device describes a design where a first boss is fixedly connected to the sensor, and the outer shell is fixed to the sensor via through-bolts. An isolation layer and a diaphragm sealing device are also included. This structure improves waterproof performance in high-pressure environments, enhances anti-interference capabilities, and ensures measurement accuracy. However, this high-pressure indoor underwater sensor device relies solely on an annular rubber diaphragm for sealing, resulting in poor sealing performance. Furthermore, it lacks a quick-installation structure for the weighing sensor, making it inconvenient to repair or replace after prolonged use. This reduces its practicality and hinders its widespread adoption. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a force sensor structure for underwater high pressure resistance. It can effectively solve the problems of existing technologies that only use annular rubber diaphragms for sealing, resulting in poor sealing performance, lack of a quick installation structure for the weighing sensor, inconvenience for maintenance or replacement after long-term use, poor practicality, and difficulty in widespread use.

[0005] The technical solution adopted by this utility model is as follows: a force sensor structure for underwater high pressure resistance, including an outer shell and a weighing sensor. The inner wall of the outer shell has a slot and a threaded hole 1. A plug is fixedly installed at the bottom of the weighing sensor. A threaded hole 2 is opened on the side of the weighing sensor away from the plug. A bolt 1 that matches the threaded hole 2 and the threaded hole 1 is threadedly connected to the side of the weighing sensor away from the plug. A guide rod is fixedly installed on the inner wall of the outer shell. A load-bearing slider is provided on the inner wall of the outer shell. A guide groove is opened on the side of the load-bearing slider near the guide rod. A positioning groove 1 is opened on the side of the load-bearing slider away from the guide rod. A cover plate is provided on the side of the outer shell away from the guide rod. A positioning groove 2 and a threaded hole 3 are opened at the end of the outer shell near the cover plate. A positioning block 1 and a positioning block 2 are fixedly installed at the end of the cover plate near the outer shell. A threaded hole 4 is opened on the side of the cover plate away from the outer shell. A bolt 2 that matches the threaded hole 4 and the threaded hole 3 is threadedly connected to the side of the cover plate away from the outer shell.

[0006] Preferably, the insert and the slot are plugged in, and the bolt extends through the threaded hole 2 into the interior of the threaded hole 1. The threaded hole 2 and the threaded hole 1 have the same diameter.

[0007] With the above technical solution, the staff inserts the plug into the inside of the slot, and then extends the bolt through the threaded hole 2 into the inside of the threaded hole 1, which can realize the quick installation of the weighing sensor. After long-term use, it is convenient to repair or replace it.

[0008] Preferably, the outer diameter of the load-bearing slider is the same as the inner diameter of the outer shell, and the guide rod and the guide groove are connected by insertion.

[0009] Using the above technical solution, workers insert the load-bearing slider into the inside of the outer shell and simultaneously insert the guide rod into the inside of the guide groove, which enables the rapid positioning of the load-bearing slider.

[0010] Preferably, the outer wall of the load-bearing slider is provided with an installation groove, and the inner wall of the installation groove is provided with a sealing ring. Two identical sealing rings are provided, and the two sealing rings are distributed vertically. The sealing rings are made of rubber.

[0011] Through the above technical solution, the sealing ring made of rubber has good elasticity and sealing performance, which can effectively prevent water from seeping into the weighing sensor from the gap between the load-bearing slider and the outer shell, greatly reducing the risk of water seepage damaging internal components in the underwater high-pressure environment and ensuring the normal operation of the weighing sensor.

[0012] Preferably, the first positioning block and the first positioning groove are connected by a plug-in joint, and the second positioning block and the second positioning groove are connected by a plug-in joint.

[0013] With the above technical solution, after the load-bearing slider is quickly positioned, the operator inserts positioning block one into the inside of positioning slot one and positioning block two into the inside of positioning slot two. This enables the cover plate to be quickly positioned and the load-bearing slider to be quickly limited, facilitating quick assembly and disassembly during use or assembly.

[0014] Preferably, the bolt two extends through the threaded hole four into the interior of the threaded hole three, and the threaded hole four and the threaded hole three have the same diameter.

[0015] With the above technical solution, after the cover plate is quickly positioned, the workers can insert bolt 2 through threaded hole 4 and extend it into threaded hole 3, which can quickly fix the cover plate and facilitate its maintenance or replacement after long-term use.

[0016] Preferably, the outer casing has a second mounting groove near the cover plate, and the inner wall of the second mounting groove is provided with a second sealing ring. Two identical second sealing rings are provided, and the second sealing ring is made of rubber.

[0017] Through the above technical solution, the sealing ring II made of rubber has good elasticity and sealing performance, which can effectively prevent high-pressure water from seeping into the weighing sensor from the gap between the load-bearing slider and the outer shell. This ensures the sealing reliability of the weighing sensor in the long-term underwater high-pressure working environment and extends the service life and maintenance cycle of the weighing sensor.

[0018] Compared with the prior art, this utility model provides a force sensor structure for withstanding high pressure underwater, which has the following advantages:

[0019] 1. This structure for a force sensor subjected to high pressure underwater allows for quick installation of the load cell through the cooperation of the insert block and slot, bolt one, and threaded hole two and threaded hole one. After long-term use, it facilitates maintenance or replacement. The cooperation of the guide rod and guide groove enables quick positioning of the load-bearing slider. The cooperation of positioning block one and positioning groove one, and positioning block two and positioning groove two enables quick positioning of the cover plate and quick limiting of the load-bearing slider. This facilitates quick disassembly and assembly during use or assembly. With the cooperation of bolt two, threaded hole four, and threaded hole three, the cover plate can be quickly fixed, facilitating maintenance or replacement after long-term use.

[0020] 2. The structure of this force sensor for underwater high-pressure applications uses rubber sealing rings one and two, which have good elasticity and sealing performance. This effectively prevents water from seeping into the load cell through the gap between the load-bearing slider and the outer shell, greatly reducing the risk of water seepage damaging internal components in the high-pressure underwater environment. This ensures the normal operation of the load cell and extends its service life and maintenance cycle. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the half-section structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the installation structure of the weighing sensor of this utility model;

[0024] Figure 4 This is a schematic diagram of the installation structure of the load-bearing slider of this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of the load-bearing slider of this utility model;

[0026] Figure 6 This is a schematic diagram of the cover plate installation structure of this utility model;

[0027] Figure 7 This is a schematic diagram of the three-dimensional structure of the cover plate of this utility model.

[0028] The components are as follows: 1. Outer shell; 2. Weighing sensor; 3. Slot; 4. Threaded hole one; 5. Insert block; 6. Threaded hole two; 7. Bolt one; 8. Guide rod; 9. Load-bearing slider; 10. Guide groove; 11. Mounting groove one; 12. Sealing ring one; 13. Positioning groove one; 14. Mounting groove two; 15. Positioning groove two; 16. Threaded hole three; 17. Cover plate; 18. Positioning block one; 19. Positioning block two; 20. Threaded hole four; 21. Bolt two; 22. Sealing ring two. Detailed Implementation

[0029] 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.

[0030] Example 1:

[0031] like Figure 1-7As shown, this utility model provides a force sensor structure for underwater high-pressure resistance, including a housing 1 and a load cell 2. The inner wall of the housing 1 has a slot 3 and a threaded hole 4. A plug 5 is fixedly installed at the bottom of the load cell 2. A threaded hole 6 is provided on the side of the load cell 2 away from the plug 5. A bolt 7, compatible with the threaded hole 6 and the threaded hole 4, is threadedly connected to the side of the load cell 2 away from the plug 5. A guide rod 8 is fixedly installed on the inner wall of the housing 1. A load-bearing slider 9 is provided on the inner wall of the housing 1. The load-bearing slider 9 is close to the guide rod 8. A guide groove 10 is provided on one side of the rod 8. A positioning groove 13 is provided on the side of the load-bearing slider 9 away from the guide rod 8. A cover plate 17 is provided on the side of the load-bearing slider 9 away from the guide rod 8. A positioning groove 25 and a threaded hole 36 are provided on the end of the outer shell 1 near the cover plate 17. A positioning block 18 and a positioning block 29 are fixedly installed on the end of the cover plate 17 near the outer shell 1. A threaded hole 40 is provided on the side of the cover plate 17 away from the outer shell 1. A bolt 21 that matches the threaded hole 40 and the threaded hole 316 is threadedly connected to the side of the cover plate 17 away from the outer shell 1.

[0032] Specifically, the insert 5 and the slot 3 are plugged in. Bolt 7 extends through threaded hole 6 into threaded hole 4. The diameters of threaded hole 6 and threaded hole 4 are the same. The advantage is that the operator can quickly install the load cell 2 by inserting the insert 5 into the slot 3 and then extending bolt 7 through threaded hole 6 into threaded hole 4. After long-term use, it is convenient to inspect or replace it.

[0033] Specifically, the outer diameter of the load-bearing slider 9 is the same as the inner diameter of the outer casing 1, and the guide rod 8 and the guide groove 10 are installed by insertion. The advantage is that the operator can quickly position the load-bearing slider 9 by inserting it into the inner casing 1 and simultaneously inserting the guide rod 8 into the inner guide groove 10.

[0034] Specifically, the outer wall of the load-bearing slider 9 has a mounting groove 11, and the inner wall of the mounting groove 11 is provided with a sealing ring 12. Two identical sealing rings 12 are provided, arranged vertically. The sealing rings 12 are made of rubber. The advantage is that the rubber sealing rings 12 have good elasticity and sealing performance, effectively preventing water from seeping into the load cell 2 through the gap between the load-bearing slider 9 and the outer shell 1. This greatly reduces the risk of water seepage damaging internal components in the high-pressure underwater environment, ensuring the normal operation of the load cell 2.

[0035] Example 2:

[0036] like Figure 2-7As shown, as an improvement to the previous embodiment, to further facilitate the limiting of the load-bearing slider 9, specifically, positioning block 18 and positioning groove 13 are plug-in installed, and positioning block 2 19 and positioning groove 2 15 are plug-in installed. The advantage is that after quickly positioning the load-bearing slider 9, the operator inserts positioning block 18 into the interior of positioning groove 13 and simultaneously inserts positioning block 2 19 into the interior of positioning groove 2 15, achieving rapid positioning of the cover plate 17 and rapid limiting of the load-bearing slider 9, facilitating quick assembly and disassembly during use or assembly.

[0037] Specifically, bolt 21 extends through threaded hole 4 20 into threaded hole 3 16, with threaded hole 4 20 and threaded hole 3 16 having the same diameter. The advantage is that after quickly positioning cover plate 17, workers can quickly fix cover plate 17 by extending bolt 21 through threaded hole 4 20 into threaded hole 3 16, facilitating maintenance or replacement after prolonged use.

[0038] Specifically, a mounting groove 14 is provided at one end of the outer casing 1 near the cover plate 17. A sealing ring 22 is installed on the inner wall of the mounting groove 14. Two identical sealing rings 22 are provided, and the sealing rings 22 are made of rubber. The advantage is that the rubber sealing rings 22 have good elasticity and sealing performance, effectively preventing high-pressure water from seeping into the load cell 2 through the gap between the load-bearing slider 9 and the outer casing 1. This ensures the sealing reliability of the load cell 2 in long-term underwater high-pressure working environments, extending the service life and maintenance cycle of the load cell 2.

[0039] Working principle: During installation, the operator inserts the insert block 5 into the slot 3, and then inserts bolt 7 through threaded hole 6 to threaded hole 4, enabling quick installation of the load cell 2. This facilitates maintenance or replacement after prolonged use. Next, the operator inserts the load-bearing slider 9 into the housing 1, and simultaneously inserts the guide rod 8 into the guide groove 10, enabling quick positioning of the load-bearing slider 9. After quickly positioning the load-bearing slider 9, the operator inserts positioning block 18 into positioning groove 13, and simultaneously inserts positioning block 19 into positioning groove 15, enabling quick positioning of the cover plate 17 and quick limiting of the load-bearing slider 9. This facilitates quick disassembly and assembly during use or assembly. After quickly positioning the cover plate 17, the operator inserts bolt 21 through… The threaded hole 20 extends into the threaded hole 16, allowing for quick fixing of the cover plate 17. This facilitates maintenance or replacement after prolonged use. During use, the rubber sealing ring 12 has good elasticity and sealing performance, effectively preventing water from seeping into the load cell 2 through the gap between the load-bearing slider 9 and the outer shell 1. This greatly reduces the risk of water seepage damaging internal components in the underwater high-pressure environment, ensuring the normal operation of the load cell 2. The rubber sealing ring 22 also has good elasticity and sealing performance, effectively preventing high-pressure water from seeping into the load cell 2 through the gap between the load-bearing slider 9 and the outer shell 1. This ensures the sealing reliability of the load cell 2 in the long-term underwater high-pressure working environment, extending the service life and maintenance cycle of the load cell 2.

[0040] 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 load cell structure for use in underwater high pressure applications, comprising an outer housing (1) and a load cell (2), characterized in that: The inner wall of the outer casing (1) is provided with a slot (3) and a threaded hole (4). A plug (5) is fixedly installed at the bottom of the load cell (2). A threaded hole (6) is provided on the side of the load cell (2) away from the plug (5). A bolt (7) that matches the threaded hole (6) and the threaded hole (4) is threadedly connected to the side of the load cell (2) away from the plug (5). A guide rod (8) is fixedly installed on the inner wall of the outer casing (1). A load-bearing slider (9) is provided on the inner wall of the outer casing (1). A guide groove (10) is provided on the side of the load-bearing slider (9) near the guide rod (8). A positioning groove 1 (13) is provided on the side away from the guide rod (8). A cover plate (17) is provided on the side of the load-bearing slider (9) away from the guide rod (8). A positioning groove 2 (15) and a threaded hole 3 (16) are provided on the end of the outer shell (1) near the cover plate (17). A positioning block 1 (18) and a positioning block 2 (19) are fixedly installed on the end of the cover plate (17) near the outer shell (1). A threaded hole 4 (20) is provided on the side of the cover plate (17) away from the outer shell (1). A bolt 2 (21) that matches the threaded hole 4 (20) and the threaded hole 3 (16) is threadedly connected to the side of the cover plate (17) away from the outer shell (1).

2. A load cell structure for use in high pressure underwater applications according to claim 1 wherein: The insert (5) and the slot (3) are plugged in and installed together. The bolt (7) extends through the threaded hole (6) into the inside of the threaded hole (4). The threaded hole (6) and the threaded hole (4) have the same diameter.

3. The force sensor structure for underwater high pressure resistance according to claim 1, characterized in that: The outer diameter of the load-bearing slider (9) is the same as the inner diameter of the outer shell (1), and the guide rod (8) and the guide groove (10) are connected by insertion.

4. The force sensor structure for underwater high pressure resistance according to claim 1, characterized in that: The outer wall of the load-bearing slider (9) is provided with an installation groove (11), and the inner wall of the installation groove (11) is provided with a sealing ring (12). There are two identical sealing rings (12), which are distributed vertically. The sealing rings (12) are made of rubber.

5. The force sensor structure for underwater high pressure resistance according to claim 1, characterized in that: The first positioning block (18) and the first positioning groove (13) are connected by a plug-in joint, and the second positioning block (19) and the second positioning groove (15) are connected by a plug-in joint.

6. The force sensor structure for underwater high pressure resistance according to claim 1, characterized in that: The second bolt (21) extends through the fourth threaded hole (20) into the interior of the third threaded hole (16), the fourth threaded hole (20) and the third threaded hole (16) having the same diameter.

7. The force sensor structure for underwater high-pressure resistance according to claim 1, characterized in that: The outer shell (1) has a mounting groove (14) at one end near the cover plate (17). The inner wall of the mounting groove (14) is provided with a sealing ring (22). There are two identical sealing rings (22), and the sealing rings (22) are made of rubber.

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