A multi-point displacement meter bore protection structure

Abstract

The utility model relates to multi -point displacement meter installation technical field, concretely relates to a kind of multi -point displacement meter orifice protection structure, including protective cover, the side of protective cover is equipped with chassis, through hole is passed and is established on chassis, the other side of protective cover is equipped with cover, the inside of chassis is equipped with hollow sleeve, hollow sleeve is coaxial with through hole and is detachably connected with chassis, the inner diameter of hollow sleeve and through hole are all adapted to the shield of multi -point displacement meter, the side of protective cover is equipped with cable through hole.The utility model is through detachable combination formula structure, without damaging slope or protective layer can take out damaged multi -point displacement meter, to guarantee the continuity of monitoring;Through the closed structure of stainless steel material, not only can effectively resist external object impact, but also can effectively block internal water seepage.

Description

Technical Field

[0001] This utility model relates to the field of multi-point displacement meter installation technology, and more specifically, to a multi-point displacement meter orifice protection structure. Background Technology

[0002] Multi-point displacement gauges are core instruments in the field of safety monitoring of major infrastructure such as dams, slope engineering, and arch engineering. They are mainly used to monitor the displacement and deformation of structures in real time. Their installation stability and long-term operation and maintenance quality directly determine the continuity, accuracy and reliability of engineering safety monitoring data, and are a key technical support for ensuring the safe operation of engineering structures.

[0003] In practical engineering applications, multi-point displacement gauges need to be installed inside pre-designated orifices. These orifices, as the connection point between the instrument and the external environment, are exposed to complex outdoor environments such as open slopes and damp roof arches for extended periods, facing multiple risks and threats. Therefore, targeted protection measures for orifices are essential. Currently, the industry's core requirements for orifice protection focus on three dimensions: firstly, impact protection to prevent damage to the instrument body or connecting components from construction debris, falling rocks, and external collisions; secondly, waterproof sealing to prevent rainwater infiltration, groundwater seepage, and substances precipitated from within the engineering structure from entering the orifice, thus avoiding instrument short circuits, component corrosion, and other malfunctions; and thirdly, protection against external interference to isolate dust, debris, insects, and other foreign objects from entering, ensuring the sensitivity of the instrument's sensing elements and guaranteeing stable monitoring data.

[0004] To meet the aforementioned basic protection requirements, the industry generally adopts a "complete concrete pouring" protection method. Taking the protection of multi-point displacement gauges in slope engineering as an example, the specific implementation of this technical solution is as follows: Structurally, after the multi-point displacement gauge is accurately installed and fixed inside the borehole, concrete is poured around the perimeter of the borehole and the instrument base to form a closed concrete protective layer. This protective layer not only completely covers the slope surface around the borehole but also wraps around the base of the multi-point displacement gauge and part of the instrument body, forming a protective whole that fits tightly with the slope structure. Relying on the high strength physical properties of concrete itself, it resists the impact and collision of external objects, achieving anti-impact protection. Utilizing the dense structure of the cured concrete, it blocks the seepage path of rainwater and groundwater into the borehole, while also isolating the intrusion of substances precipitated from the engineering structure, achieving a waterproof and sealing effect. In addition, the concrete protective layer can also form a physical barrier, effectively preventing dust, debris, and other external interference factors from directly contacting the instrument, ensuring the normal working environment of the instrument. Installation method: After the multi-point displacement gauge is fixed in the orifice, a concrete pouring template is set up on site, and then the concrete pouring operation is carried out. After the concrete is cured and formed, the protective layer, slope structure and instrument base form an integrated structure to achieve long-term protection.

[0005] However, the existing "complete concrete pouring" protection method has significant technical defects and cannot meet the actual needs of long-term operation and maintenance of projects. On the one hand, instrument replacement is extremely difficult. Because the concrete protective layer forms a solid integrated structure with the slope structure and instrument base, when the multi-point displacement gauge needs to be replaced due to aging from long-term use or sudden failure, the concrete layer cannot be easily removed. Forcibly breaking it not only easily damages the surrounding engineering structure, but also makes it difficult to remove the old instrument completely, directly causing the monitoring work to be interrupted. On the other hand, if new instruments are to be installed by drilling new holes, the process is not only complicated and time-consuming, but also requires a high investment of manpower and material resources, making it extremely uneconomical. On the other hand, the limitations of this protection method are even more prominent in dam engineering scenarios. There are joint gaps between the multi-point displacement gauge boreholes inside the dam body and the rock mass. The existing concrete pouring method cannot effectively seal these gaps, causing seepage or structural exudates to easily flow out from the gaps and seep into the borehole. Such liquids can not only corrode instrument components, but may also accumulate in the orifice, eventually causing the multi-point displacement meter to malfunction, seriously affecting the normal operation of dam safety monitoring and posing a potential hazard to the dam's structural safety.

[0006] In summary, existing orifice protection technologies for multi-point displacement gauges suffer from problems such as difficulty in instrument replacement, high maintenance costs, and protection failure in special scenarios. There is an urgent need for a new orifice protection structure that balances protective performance, ease of installation, and flexibility of operation and maintenance. Utility Model Content

[0007] The purpose of this utility model is to provide a protection structure for the orifice of a multi-point displacement gauge to solve the technical problems pointed out in the background art.

[0008] This utility model is achieved through the following technical solution: a multi-point displacement meter orifice protection structure, including a protective cover, a base plate on one side of the protective cover, a through hole in the base plate, a cover plate on the other side of the protective cover, a hollow sleeve on the inner side of the base plate, the hollow sleeve being coaxial with the through hole and detachably connected to the base plate, the inner diameter of the hollow sleeve and the through hole being adapted to the protective cover of the multi-point displacement meter, and a cable through hole on the side of the protective cover.

[0009] According to a preferred embodiment, the protective cover is a cylindrical or frustum-shaped cover.

[0010] According to a preferred embodiment, the protection is a polygonal cover.

[0011] According to a preferred embodiment, the cover plate is connected to the protective cover by bolts.

[0012] According to a preferred embodiment, the protective cover is integrally formed with the chassis.

[0013] According to a preferred embodiment, the protective cover and chassis are made of stainless steel.

[0014] According to a preferred embodiment, the hollow sleeve has a single-sided opening structure, the opening side of the hollow sleeve is connected to the chassis, and a wire hole is provided on the side of the hollow sleeve away from the chassis.

[0015] According to a preferred embodiment, a flange is provided on the outer side of the opening side of the hollow sleeve, and a through hole is provided on the base plate corresponding to the screw hole on the flange.

[0016] According to a preferred embodiment, the hollow sleeve and the flange are integrally formed.

[0017] According to a preferred embodiment, the flange is connected to the multi-point displacement gauge base on the outside of the chassis via a flange gasket located on the inside and / or outside of the chassis.

[0018] The technical solution of the orifice protection structure for a multi-point displacement meter provided by this utility model has at least the following advantages and beneficial effects: the detachable modular structure allows the damaged multi-point displacement meter to be removed without damaging the slope or protective layer, thus ensuring the continuity of monitoring; the stainless steel enclosed structure not only effectively resists the impact of external objects, but also effectively blocks internal water seepage. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the multi-point displacement gauge orifice protection structure provided in Embodiment 1 of this utility model; Reference numerals: 1-cover plate, 2-hollow sleeve, 3-bolt, 4-protective cover, 5-cable passage, 6-flange, 7-screw hole, 8-base. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Example 1 This utility model embodiment provides a protection structure for the orifice of a multi-point displacement gauge. Figure 1 This is a schematic diagram of the overall structure of the orifice protection structure for the multi-point displacement gauge. (See attached diagram) Figure 1 As shown, the orifice protection structure of the multi-point displacement gauge includes: Protective cover 4: It is made of stainless steel sheet and is cylindrical in shape. The side of the protective cover 4 is provided with cable through hole 5 for passing through the cable of the multi-point displacement meter. At the same time, by sealing the cable and the hole wall, water can be prevented from seeping in through the cable through hole 5, thus improving the waterproof performance of the multi-point displacement meter orifice protection structure. Chassis: It is integrally formed on one side of the protective cover 4, forming a cover structure with a single-sided opening; through holes are provided on the chassis for the multi-point displacement gauge to be inserted into the interior of the protective cover 4 for installation and fixation; Cover plate 1: Located on the side of the protective cover 4 away from the chassis, it is connected to the protective cover 4 by bolts 3 to achieve a detachable connection and to seal the inside of the cover structure to prevent internal water leakage; Hollow sleeve 2: The hollow sleeve 2 is located on the inner side of the chassis and is used to install and fix the multi-point displacement gauge inserted into the protective cover 4. Specifically, the hollow sleeve 2 is coaxial with the through hole and detachably connected to the chassis. The inner diameter of the hollow sleeve 2 and the through hole are both adapted to the protective cover of the multi-point displacement gauge, so as to effectively prevent the multi-point displacement gauge from shaking after it is inserted and improve its positional stability.

[0022] In summary, the embodiments of the present invention, through the aforementioned detachable modular structure, allow for the removal of damaged multi-point displacement gauges without damaging the slope or protective layer, thus ensuring the continuity of monitoring; the stainless steel enclosed structure not only effectively resists impacts from external objects but also effectively prevents internal water seepage.

[0023] Example 2 This embodiment further explains the structure of the protective cover 4 based on the technical solution provided in Embodiment 1: In this embodiment, the protective cover 4 is cylindrical, frustum-shaped, or polygonal. In a preferred embodiment, a frustum-shaped protective cover 4 is selected, wherein the base is integrally formed at the small end of the frustum-shaped protective cover 4, and the cover plate 1 is detachably connected to the large end of the frustum-shaped protective cover 4 by bolts 3, forming a frustum-shaped protective cavity sealed at both ends. With the sealing of the cable through hole 5, it can effectively prevent external rainwater and seepage water from entering the multi-point displacement gauge orifice.

[0024] Example 3 This embodiment further explains the structure of the hollow sleeve 2 based on the technical solution provided in Embodiment 2: In this embodiment, the hollow sleeve 2 has a single-sided opening structure, wherein the opening side is connected to the chassis, and a cable hole is provided on the side of the hollow sleeve 2 away from the chassis, so that the cable of the multi-point displacement meter can pass through and finally be led out from the cable hole 5 provided on the side of the protective cover 4.

[0025] Furthermore, a flange 6 is provided on the outer side of the opening side of the hollow sleeve 2. The hollow sleeve 2 and the flange 6 are integrally formed. A through hole is provided on the base plate corresponding to the screw hole 7 on the flange 6. The flange 6 is connected to the multi-point displacement meter base 8 on the outer side of the base plate through a flange gasket located on the inner and / or outer side of the base plate, so as to realize the fixation of the multi-point displacement meter after installation.

[0026] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A protection structure for the orifice of a multi-point displacement gauge, characterized in that, The protective cover (4) includes a chassis on one side, with a through hole through the chassis. The other side of the protective cover (4) is provided with a cover plate (1). A hollow sleeve (2) is provided inside the chassis. The hollow sleeve (2) is coaxial with the through hole and detachably connected to the chassis. The inner diameter of the hollow sleeve (2) and the through hole are both adapted to the cover of the multi-point displacement gauge. A cable through hole (5) is provided on the side of the protective cover (4).

2. The multi-point displacement gauge orifice protection structure as described in claim 1, characterized in that, The protective cover (4) is a cylindrical or frustum-shaped cover.

3. The multi-point displacement gauge orifice protection structure as described in claim 1, characterized in that, The protection is a polygonal cover.

4. The multi-point displacement gauge orifice protection structure as described in any one of claims 2 to 3, characterized in that, The cover plate (1) is connected to the protective cover (4) by bolts (3).

5. The multi-point displacement gauge orifice protection structure as described in claim 4, characterized in that, The protective cover (4) is integrally formed with the chassis.

6. The multi-point displacement gauge orifice protection structure as described in claim 5, characterized in that, The protective cover (4) and the chassis are made of stainless steel.

7. The multi-point displacement gauge orifice protection structure as described in claim 6, characterized in that, The hollow sleeve (2) has a single-sided opening structure. The opening side of the hollow sleeve (2) is connected to the chassis. A wire hole is opened on the side of the hollow sleeve (2) away from the chassis.

8. The multi-point displacement gauge orifice protection structure as described in claim 7, characterized in that, A flange (6) is provided on the outer side of the opening side of the hollow sleeve (2), and a through hole is provided on the base plate corresponding to the screw hole (7) on the flange (6).

9. The multi-point displacement gauge orifice protection structure as described in claim 8, characterized in that, The hollow sleeve (2) and the flange (6) are integrally formed.

10. The multi-point displacement gauge orifice protection structure as described in claim 8, characterized in that, The flange (6) is connected to the multi-point displacement gauge base (8) on the outside of the chassis via a flange gasket located on the inside and / or outside of the chassis.

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