A device for installing and positioning an osmometer in a pressure pipe

Abstract

The utility model discloses a kind of installation and positioning device of osmometer in pressure measuring tube, it is related to osmometer installation technical field, and its technical solution main point includes bottom plate, filter cartridge and osmometer, the osmometer is composed of osmometer main body and pressure gauge, the osmometer main body is located in filter cartridge;First height adjusting assembly is equipped on the bottom plate, the first height adjusting assembly includes fixed frame, two first slide rail, screw rod, knob, lifting plate, the fixed frame is installed in the upper end of bottom plate, two the first slide rail is installed in the front side of fixed frame.The utility model aims to realize the independent accurate positioning of osmometer and filter cartridge by double height adjusting structure, cooperate with the stable clamping assembly and detachable filtering protection structure of strong adaptability, break through traditional device positioning precision low, clamping compatibility is poor, filter cartridge is easy to block and the core problem such as installation and maintenance inconvenience, finally improve the reliability of osmometer monitoring data and the engineering applicability of device.

Description

Technical Field

[0001] This utility model relates to the field of piezometer installation technology, and in particular to a piezometer installation and positioning device inside a pressure measuring tube. Background Technology

[0002] In fields such as water conservancy engineering, geological exploration, and foundation pit monitoring, piezometers are core instruments for monitoring groundwater levels and pore water pressure. Their installation accuracy directly determines the reliability and validity of the monitoring data. Piezometers, as the conventional mounting medium for piezometers, allow for long-term stable monitoring of pressure in different soil layers or water bodies by placing the piezometer at a specific depth inside the pipe. This provides crucial data support for engineering safety assessments and geological disaster early warning systems.

[0003] As engineering monitoring demands increasingly higher data accuracy, the installation and positioning device for piezometers has gradually become a core element of technological optimization. Currently, the installation of piezometers within the mandrel often employs simple suspension or rigid support. However, these methods reveal numerous shortcomings in practical applications and are insufficient to meet the needs of complex engineering scenarios.

[0004] On the one hand, the height adjustment function of traditional devices has significant shortcomings. Some devices use steel wire rope suspension or fixed height sleeves to achieve depth positioning of the piezometer. Not only does the adjustment process rely on manual visual judgment, but the positioning error usually exceeds 5cm, which cannot meet the installation accuracy requirements of refined monitoring. Other devices, although equipped with a preliminary height adjustment structure, have cumbersome adjustment methods that require multiple people to operate together, and lack a reliable locking mechanism after adjustment. They are prone to displacement under the influence of water flow impact or soil settlement in the piezometer tube, resulting in continuous deviations in the monitoring data. Especially in multi-layer soil monitoring scenarios, the inability to accurately position the piezometer to the target monitoring section directly affects the representativeness of the monitoring data.

[0005] On the other hand, the filtration protection of piezometers often relies on independently installed simple filter screens. This structure is easily clogged by impurities such as silt and sand in the pressure measuring tube, causing the piezometer sensor to not make sufficient contact with the water, resulting in data response lag or even failure. In addition, some devices have an integrated design of the filter cartridge and mounting bracket, making it impossible to adjust the position of the filter cartridge according to the height of silt accumulation in the pressure measuring tube, further increasing the risk of filtration failure.

[0006] Therefore, it is necessary to design an installation and positioning device for the piezometer inside the pressure measuring tube to solve the above problems. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by proposing an installation and positioning device for a piezometer in a pressure measuring tube. This invention aims to achieve independent and precise positioning of the piezometer and filter cartridge through a dual-height adjustment structure, coupled with a highly compatible and stable clamping component and a detachable filter protection structure. It overcomes the core problems of traditional devices, such as low positioning accuracy, poor clamping compatibility, easy clogging of the filter cartridge, and inconvenient installation and maintenance, ultimately improving the reliability of piezometer monitoring data and the engineering applicability of the device.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A piezometer installation and positioning device in a pressure measuring tube includes a base plate, a filter cartridge, and a piezometer. The piezometer consists of a piezometer body and a pressure gauge, and the piezometer body is located inside the filter cartridge. The base plate is provided with a first height adjustment assembly, which includes a fixed frame, two first slide rails, a lead screw, a knob, and a lifting plate. The fixed frame is installed on the upper end of the base plate, the two first slide rails are installed on the front side of the fixed frame, the lead screw is rotatably connected between the fixed frame and the base plate, the knob is fixedly connected to the upper end of the lead screw, the lifting plate is slidably connected to the two first slide rails and threadedly connected to the lead screw, the filter cartridge is located on the front side of the lifting plate, and the filter cartridge is connected to the lifting plate through a connecting assembly.

[0009] Preferably, the connecting assembly includes two connecting strips fixedly connected to the front side of the lifting plate, and U-shaped blocks are fixedly connected to adjacent sides of the two connecting strips. A first bolt is threaded through each of the two U-shaped blocks. The filter cartridge is provided with multiple through holes, and the first bolt passes through the corresponding through holes.

[0010] Preferably, a fixing plate is fixedly connected between the two U-shaped blocks, and the fixing plate has a circular hole through which the piezometer body passes.

[0011] Preferably, the device further includes a clamping assembly for clamping the piezometer body. The clamping assembly includes two rectangular plates, each with a second bolt threaded through it. Each of the two rectangular plates has two guide rods slidably connected through it. A movable plate is fixedly connected between every two cooperating guide rods. Multiple arc-shaped clamping blocks are fixedly connected to adjacent sides of the two movable plates. The two second bolts are rotatably connected to the corresponding movable plates.

[0012] Preferably, it further includes a second height adjustment component, which includes two second slide rails fixedly connected to the upper end of the fixed plate, and a self-locking slider is slidably connected to each of the two second slide rails. The two rectangular plates are fixedly connected to the corresponding self-locking sliders.

[0013] Preferably, the base plate is provided with multiple mounting holes, and anchor bolts are provided in the multiple mounting holes to install the base plate in a designated position.

[0014] Preferably, the self-locking slider includes a slider body and a self-locking bolt. The slider body is provided with a groove that is adapted to the second slide rail. The self-locking bolt passes through the slider body and is threadedly connected to the slider body. The end of the self-locking bolt extends into the groove and is fixedly connected to an anti-slip pressure block. When the self-locking bolt is tightened, the anti-slip pressure block abuts tightly against the side wall of the second slide rail to achieve positioning.

[0015] Preferably, the outer wall of the filter cartridge is wrapped with a water-permeable filter cloth, and the edge of the filter cloth is fixed to the filter cartridge by elastic straps.

[0016] Compared with existing technologies, the advantages of this device are: 1. Compared with existing technologies, this device drives the overall lifting and lowering of the filter cartridge through a first height adjustment component, which can adjust the overall protective position of the filter cartridge according to the distribution of silt and water flow in the pressure measuring tube; at the same time, the second height adjustment component drives the clamping component to lift and lower independently, realizing fine adjustment of the monitoring height of the piezometer body inside the filter cartridge. The screw drive and slide rail guide ensure smooth lifting and lowering, and the combination of self-locking slider and anti-slip pressure block realizes reliable locking after adjustment, so that the overall positioning error is controlled within ±2mm, which is far superior to the positioning accuracy of traditional devices and can accurately match the monitoring section requirements of different depths; 2. Compared with the prior art, the clamping assembly of this device drives the moving plate to slide along the guide rod through the second bolt, which drives the arc-shaped clamping blocks to clamp or loosen synchronously. The design of multiple arc-shaped clamping blocks makes the piezometer body evenly stressed. The guide rod setting avoids the moving plate from shifting, ensuring that the clamping process is stable and controllable. 3. Compared with the existing technology, the filter cartridge is detachably connected to the lifting plate by the connecting strip, U-shaped block and the first bolt. When the filter cloth is blocked or the filter cartridge is damaged, it can be disassembled and replaced separately without disassembling the entire device. The permeable filter cloth wrapped on the outer wall of the filter cartridge is fixed by the elastic strap. It has a large filtration area and is easy to replace. It can effectively block sand, silt and other impurities from entering the interior of the filter cartridge and avoid the osmotic pressure sensor from becoming blocked and failing.

[0017] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the installation and positioning device for an in-tube piezometer proposed in this utility model; Figure 2 for Figure 1 A structural diagram from another perspective; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Base plate, 2. Fixing frame, 3. First slide rail, 4. Lead screw, 5. Knob, 6. Pressure gauge, 7. Filter cartridge, 8. Connecting strip, 9. U-shaped block, 10. First bolt, 11. Fixing plate, 12. Piezometer body, 13. Mounting hole, 14. Lifting plate, 15. Arc-shaped clamp, 16. Moving plate, 17. Second bolt, 18. Guide rod, 19. Second slide rail, 20. Self-locking slider. Detailed Implementation

[0020] 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.

[0021] In the description of the embodiments of this utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Reference Figures 1-3 A piezometer installation and positioning device in a pressure measuring tube includes a base plate 1, a filter cylinder 7, and a piezometer. The filter cylinder 7 is composed of a mesh cylinder and a fixing ring. The base plate 1 has multiple mounting holes 13, and anchor bolts are installed in the multiple mounting holes 13. The base plate 1 is installed in a designated position by means of the anchor bolts. The piezometer is composed of a piezometer body 12 and a pressure gauge 6. The pressure gauge 6 is fixedly connected to the top of the piezometer body 12 through a threaded joint. The joint is sealed with PTFE tape to prevent water from seeping in and affecting the monitoring accuracy. The piezometer body 12 is located inside the filter cylinder 7. The outer wall of the filter cylinder 7 is wrapped with a water-permeable filter cloth. The edge of the filter cloth is fixed to the filter cylinder 7 by means of elastic straps. The base plate 1 is equipped with a first height adjustment component, which includes a fixed frame 2, two first slide rails 3, a lead screw 4, a knob 5, and a lifting plate 14. The fixed frame 2 is installed on the upper end of the base plate 1 and is an L-shaped steel structure integrally formed with the base plate 1. The two first slide rails 3 are installed on the front side of the fixed frame 2. The lead screw 4 is rotatably connected between the fixed frame 2 and the base plate 1. The knob 5 is fixedly connected to the upper end of the lead screw 4. The lifting plate 14 is slidably connected to the two first slide rails 3 and threadedly connected to the lead screw 4. The threaded connection between the lifting plate 14 and the lead screw 4 is a fine thread with a pitch of 2mm, which improves the accuracy of height adjustment. The filter cartridge 7 is located on the front side of the lifting plate 14 and is connected to the lifting plate 14 through a connecting component.

[0024] The connecting components include two connecting strips 8 fixedly connected to the front side of the lifting plate 14. U-shaped blocks 9 are fixedly connected to adjacent sides of the two connecting strips 8. Rubber buffer pads with a thickness of 3mm are pasted on the inner side wall of the U-shaped blocks 9. The buffer pads are tightly fitted with the top fixing ring of the filter cylinder 7 to play an anti-slip buffering role. First bolts 10 are threaded through the two U-shaped blocks 9. The filter cylinder 7 is provided with multiple through holes. The first bolts 10 pass through the corresponding through holes. A fixing plate 11 is fixedly connected between the two U-shaped blocks 9. The fixing plate 11 is provided with a round hole through which the osmotic pressure gauge body 12 passes.

[0025] The system also includes a clamping assembly for clamping the piezometer body 12. The clamping assembly includes two rectangular plates, each with a second bolt 17 threaded through it. Two guide rods 18 are slidably connected to each rectangular plate. A movable plate 16 is fixedly connected between every two cooperating guide rods 18. Multiple arc-shaped clamping blocks 15 are fixedly connected to adjacent sides of the two movable plates 16. The arc-shaped clamping blocks 15 are made of rubber, and their curvature matches the curvature of the outer wall of the piezometer body 12. The multiple clamping blocks are evenly distributed along the piezometer axis to improve clamping stability. The two second bolts 17 are rotatably connected to the corresponding movable plates 16. The system also includes a second height adjustment assembly, which includes two second slide rails 19 fixedly connected to the upper end of a fixed plate 11. Self-locking sliders 20 are slidably connected to each of the two second slide rails 19. The two rectangular plates are fixedly connected to the corresponding self-locking sliders 20.

[0026] The self-locking slider 20 includes a slider body and a self-locking bolt. The slider body has a groove that matches the second slide rail 19. The self-locking bolt passes through the slider body and is threadedly connected to it. The end of the self-locking bolt extends into the groove and is fixedly connected to an anti-slip block. The anti-slip block is made of copper and has a textured anti-slip structure on its end face that contacts the second slide rail 19 to increase friction and improve the self-locking effect. When the self-locking bolt is tightened, the anti-slip block abuts tightly against the side wall of the second slide rail 19 to achieve positioning.

[0027] The functional principle of this utility model can be explained by the following operation: First, the foundation of the device is fixed. Using the multiple mounting holes 13 on the base plate 1, the entire device is securely installed in the preset foundation position inside the pressure measuring tube with the help of anchor bolts.

[0028] Next, the overall height of the filter cartridge 7 is adjusted. The first height adjustment component adapts the filter cartridge 7 to the monitoring environment. The operator rotates the knob 5 fixed to the upper end of the lead screw 4. Since the lead screw 4 is threadedly connected to the lifting plate 14, and the lifting plate 14 slides along the two first slide rails 3 on the fixed frame 2 via a slider, rotating the knob 5 causes the lead screw 4 to rotate, causing the lifting plate 14 to rise and fall smoothly along the first slide rails 3, thus moving the connected filter cartridge 7 up and down synchronously. Based on the actual working conditions such as the sludge deposition height in the pressure measuring tube and the stable water flow area, after adjusting the filter cartridge 7 to a suitable protection height, the knob 5 is stopped. The threaded self-locking characteristic of the lead screw 4 initially fixes the position of the lifting plate 14.

[0029] The piezometer is then installed and its height is finely adjusted. The piezometer is precisely positioned using the clamping assembly and the second height adjustment assembly. First, the piezometer body 12 is passed through the round hole on the fixing plate 11, so that the pressure gauge 6 of the piezometer is exposed outside the filter cartridge 7 for easy reading. Then, the two second bolts 17 in the clamping assembly are rotated. Since the second bolts 17 are rotatably connected to the moving plate 16, and the moving plate 16 is slidably engaged with the rectangular plate through the guide rod 18, the rotation of the second bolts 17 will push the two moving plates 16 to move relative to each other along the guide rod 18, causing the multiple arc-shaped clamping blocks 15 on the moving plate 16 to move towards the piezometer body 12 simultaneously until the arc-shaped clamping blocks 15 are tightly fitted with the piezometer body 12, thus completing the clamping and fixing of the piezometer.

[0030] To precisely align the piezometer with the target monitoring section, loosen the self-locking bolt on the self-locking slider 20, pushing the rectangular plate up and down along the second slide rail 19. This causes the clamped piezometer to rise and fall synchronously. After adjusting to the specified height, retighten the self-locking bolt, ensuring the anti-slip block at the bolt end firmly abuts against the side wall of the second slide rail 19. Friction force reliably positions the self-locking slider 20, ultimately completing the fine-tuning of the piezometer's height. Finally, the piezometer is protected by the filtration structure of the filter cartridge 7. The permeable filter cloth wrapped around the outer wall of the filter cartridge 7 effectively blocks impurities such as sand and silt from entering the filter cartridge 7, preventing clogging of the piezometer sensor. The filter cloth is secured with elastic straps, ensuring a tight fit between the filter cloth and the filter cartridge 7 while facilitating subsequent periodic disassembly and replacement.

[0031] When the filter cloth becomes clogged or damaged, the first bolt 10 on the U-shaped block 9 can be loosened first, and the filter cartridge 7 can be removed from between the two connecting strips 8. The filter cloth can be replaced by untying the elastic strap. After maintenance, the filter cartridge 7 can be fixed again by the first bolt 10. The operation is convenient and efficient.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A piezometer installation and positioning device in a manometer tube, characterized in that, include: The base plate (1), filter cartridge (7) and piezometer, wherein the piezometer consists of a piezometer body (12) and a pressure gauge (6), and the piezometer body (12) is located inside the filter cartridge (7); The base plate (1) is provided with a first height adjustment assembly, which includes a fixed frame (2), two first slide rails (3), a lead screw (4), a knob (5), and a lifting plate (14). The fixed frame (2) is installed on the upper end of the base plate (1), the two first slide rails (3) are installed on the front side of the fixed frame (2), the lead screw (4) is rotatably connected between the fixed frame (2) and the base plate (1), the knob (5) is fixedly connected to the upper end of the lead screw (4), the lifting plate (14) is slidably connected to the two first slide rails (3) and threadedly connected to the lead screw (4), the filter cylinder (7) is located on the front side of the lifting plate (14), and the filter cylinder (7) is connected to the lifting plate (14) through a connecting assembly.

2. The piezometer installation and positioning device according to claim 1, characterized in that: The connecting assembly includes two connecting strips (8) fixedly connected to the front side of the lifting plate (14). U-shaped blocks (9) are fixedly connected to the adjacent sides of the two connecting strips (8). A first bolt (10) is threaded through the two U-shaped blocks (9). The filter cylinder (7) is provided with multiple through holes, and the first bolt (10) passes through the corresponding through holes.

3. The piezometer installation and positioning device according to claim 2, characterized in that: A fixing plate (11) is fixedly connected between the two U-shaped blocks (9). The fixing plate (11) has a round hole, through which the piezometer body (12) passes.

4. The piezometer installation and positioning device according to claim 3, characterized in that: It also includes a clamping assembly for clamping the piezometer body (12). The clamping assembly includes two rectangular plates, each of which is threaded with a second bolt (17). Each of the two rectangular plates is slidably connected with two guide rods (18). A movable plate (16) is fixedly connected between each pair of cooperating guide rods (18). Multiple arc-shaped clamping blocks (15) are fixedly connected to adjacent sides of the two movable plates (16). The two second bolts (17) are rotatably connected to the corresponding movable plates (16).

5. The piezometer installation and positioning device according to claim 4, characterized in that: It also includes a second height adjustment component, which includes two second slide rails (19) fixedly connected to the upper end of the fixed plate (11), and a self-locking slider (20) is slidably connected to each of the two second slide rails (19), and the two rectangular plates are fixedly connected to the corresponding self-locking sliders (20).

6. The piezometer installation and positioning device according to claim 1, characterized in that: The base plate (1) is provided with multiple mounting holes (13), and anchor bolts are provided in the multiple mounting holes (13) to install the base plate (1) in a designated position.

7. The piezometer installation and positioning device according to claim 5, characterized in that: The self-locking slider (20) includes a slider body and a self-locking bolt. The slider body is provided with a groove that is adapted to the second slide rail (19). The self-locking bolt passes through the slider body and is threadedly connected to the slider body. The end of the self-locking bolt extends into the groove and is fixedly connected to an anti-slip pressure block. When the self-locking bolt is tightened, the anti-slip pressure block abuts tightly against the side wall of the second slide rail (19) to achieve positioning.

8. The piezometer installation and positioning device according to claim 1, characterized in that: The outer wall of the filter cartridge (7) is covered with a water-permeable filter cloth, and the edge of the filter cloth is fixed to the filter cartridge (7) by elastic straps.

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