Wellhead probe cable fixing device for earthquake underground fluid observation

Abstract

The utility model relates to a cable fixing device for an earthquake underground fluid observation wellhead probe, and belongs to the technical field of earthquake monitoring. The device mainly comprises a hoop, a support, a connecting shaft, a fixed pulley, a wiring groove and a limiting assembly. The device is fixed on the outer wall of a well casing through the hoop, stable support is provided, the fixed pulley enables a cable to be effectively guided and fixed at a well mouth, the weight of the cable can be shared, the cable is prevented from greatly moving up and down due to the gravity of the cable, shaking and displacement of the cable are reduced, and stability and accuracy of an observation instrument are ensured. The limiting assembly is installed on the support, a plurality of cables can be orderly separated when penetrating through the limiting assembly and then extend into the wiring groove, orderly management of different cables is achieved, the difficulty of observation environment management is reduced, and meanwhile mutual interference between the cables is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of earthquake monitoring technology, specifically relating to a cable fixing device for a wellhead probe for earthquake underground fluid observation. Background Technology

[0002] Seismic fluid observation wells are important facilities for monitoring seismic activity. They can obtain earthquake precursor information by measuring the physical and chemical properties of underground fluids. Currently, in seismic fluid monitoring, a sealing cap is installed at the top of the well pipe, and a cable runs through the sealing cap to connect to the observation probe of the observation instrument inside the well pipe for observation work.

[0003] However, existing observation wells lack dedicated devices for fixing the cables of observation instruments, which may lead to instability of the instruments during use and cause them to shift significantly up and down. In addition, since some observation instruments are not single cables but multiple cables that are intertwined and messy, it is impossible to separate and fix the multiple cables, which increases the difficulty of managing the observation environment. Utility Model Content

[0004] To overcome the problem that existing observation wells lack dedicated devices for fixing observation instrument cables, which may lead to instability during use, and that the complex arrangement of multiple cables increases the difficulty of managing the observation environment, this invention provides a seismic underground fluid observation wellhead probe cable fixing device. The device is fixed to the outer wall of the well casing using clamps, providing stable support. Fixed pulleys effectively guide and fix the cables at the wellhead, ensuring the stability and accuracy of the observation instruments. A limiting component mounted on a bracket allows multiple cables to be orderly separated as they pass through the limiting component, then extend into the cable tray, achieving orderly management of different cables, reducing the difficulty of managing the observation environment, and also reducing mutual interference between cables.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A seismic underground fluid observation wellhead probe cable fixing device mainly includes a clamp, a bracket, a connecting shaft, a fixed pulley, a cable routing groove, and a limiting component. The clamp is installed on the outer wall of the well pipe by fastening bolts. The bracket is installed on the clamp. The connecting shaft is installed on the top of the bracket. The fixed pulley is rotatably installed on the connecting shaft. There are 4 sets of fixed pulleys, which are installed at equal intervals on the connecting shaft. The cable routing groove is connected to the bracket and located on one side of the well pipe. The limiting component is installed on the bracket. The sealing cover is installed on the top of the well pipe. The cable is wound on the fixed pulley. One end passes through the sealing cover and connects to the internal detection instrument. The other end passes through the limiting component and extends into the cable routing groove.

[0006] The bracket includes a first angle steel, a second angle steel, and a third angle steel. Two first angle steels are vertically mounted on the clamp. The second angle steel is detachably mounted horizontally on the first angle steel by fastening bolts. The third angle steel is detachably mounted on the top of the second angle steel and is located between the two second angle steels.

[0007] The second angle steel supporting the cable is rounded.

[0008] The limiting component includes a connecting plate and a rectangular frame. The connecting plate is mounted on the second angle steel, and the rectangular frame is mounted on the connecting plate at equal intervals. A limiting groove is formed between the connecting plate and the rectangular frame to facilitate the passage of cables.

[0009] The connecting plate and rectangular frame are both covered with silicone to prevent damage to the cable during movement.

[0010] The cable tray is designed with an L-shaped structure and an internal cavity structure. Inside the cable tray, there are partitions to separate the cables. At the right-angle joint of the L-shaped structure, there are limiting shafts to limit the cables.

[0011] The beneficial effects of this utility model are:

[0012] The device is secured to the outer wall of the well casing by clamps, providing stable support. Fixed pulleys effectively guide and fix the cable at the wellhead, distributing the cable's weight and preventing large vertical displacement due to its own weight. This reduces cable swaying and displacement, ensuring the stability and accuracy of the observation instrument. Limiting components are installed on the bracket, allowing multiple cables to be orderly separated as they pass through the limiting components and then extend into the cable tray, achieving orderly management of different cables, reducing the difficulty of managing the observation environment, and also reducing mutual interference between cables. Attached Figure Description

[0013] Figure 1 This is an isometric schematic diagram of the present invention.

[0014] Figure 2 This is a top view of the structure of this utility model.

[0015] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0016] Figure 4 This is a three-dimensional schematic diagram of the present invention.

[0017] Figure 5 This is a partial cross-sectional view of the present invention.

[0018] Figure 6 yes Figure 5 A magnified view of a section at point B in the middle. Detailed Implementation

[0019] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0020] This utility model discloses a cable fixing device for a seismic underground fluid observation wellhead probe. The cable fixing device mainly includes a clamp 1, a bracket 2, a connecting shaft 3, a fixed pulley 4, a cable routing groove 5, and a limiting component 6. The clamp 1 is installed on the outer wall of the well pipe 7 by fastening bolts. The bracket 2 is installed on the clamp 1. The connecting shaft 3 is installed on the top of the bracket 2. The fixed pulley 4 is rotatably installed on the connecting shaft 3. There are 4 sets of fixed pulleys 4, which are installed at equal intervals on the connecting shaft 3. The cable routing groove 5 is connected to the bracket 2 and is located on one side of the well pipe 7. The limiting component 6 is installed on the bracket 2. The sealing cover 8 is installed on the top of the well pipe 7. The cable 9 is wound on the fixed pulley 4. One end passes through the sealing cover 8 and connects to the internal detection instrument. The other end passes through the limiting component 6 and extends into the cable routing groove 5.

[0021] like Figure 2 , Figure 4 As shown, the bracket 2 includes a first angle steel 21, a second angle steel 22, and a third angle steel 23. The two first angle steels 21 are vertically mounted on the clamp 1. The second angle steel 22 is detachably and horizontally mounted on the first angle steel 21 by fastening bolts. The third angle steel 23 is detachably mounted on the top of the second angle steel 22 and located between the two second angle steels 22. When it is necessary to replace or maintain the bracket 2, the first angle steel 21, the second angle steel 22, and the third angle steel 23 can be easily disassembled to perform the corresponding operations.

[0022] like Figure 3 As shown, the third angle steel 23 supports the cable 9 with rounded corners to prevent the cable 9 from being scratched or worn.

[0023] like Figure 3 As shown, the limiting component 6 includes a connecting plate 61 and a rectangular frame 62. The connecting plate 61 is mounted on the third angle steel 23, and the rectangular frame 62 is mounted on the connecting plate 61 at equal intervals. A limiting groove is formed between the connecting plate 61 and the rectangular frame 62 to facilitate the passage of the cable 9. This further limits the movement range of the cable 9 and prevents the cable 9 from swinging excessively or getting tangled.

[0024] The connecting plate 61 and the rectangular frame 62 are both covered with silicone to prevent damage to the cable 9 during movement; to prevent the cable 9 from being scratched or worn.

[0025] like Figure 1 , Figure 2 , Figure 4 , Figure 5As shown, the cable tray 5 is designed with an L-shaped structure and an internal cavity structure. Inside the cable tray 5, there is a partition 10 to facilitate the separation of cables 9. At the right-angle connection of the L-shaped structure, there is a limiting shaft 11 to limit the cables 9. The design of the cable tray 5 and the partition 10 makes the cables 9 neat and orderly, which is convenient for management and maintenance. The limiting shaft 11 prevents the cables 9 from bending or shifting excessively, ensuring that the cables 9 are neat and orderly in the cable tray 5 and avoiding the tangling and mess between the cables 9.

[0026] Work process:

[0027] I. Component Installation Process

[0028] First, the clamp 1 is installed on the outer wall of the well pipe 7 with fastening bolts. The clamp 1 fits tightly against the well pipe 7 to ensure that the components installed on it can work stably. Two first angle steels 21 are vertically installed on the fixed clamp 1 to form the base of the bracket 2. Next, the second angle steel 22 is detachably installed horizontally on the first angle steel 21 with fastening bolts. Then, the third angle steel 23 is detachably installed on the top of the second angle steel 22 to further improve the structure of the bracket 2 and provide installation positions for components such as the connecting shaft 3 and the limiting component 6. The connecting shaft 3 is installed at the position of the first angle steel 21. Four sets of fixed pulleys 4 for winding the cable 9 are rotatably installed on the connecting shaft 3 to guide and fix the cable 9. At the same time, the limiting component 6 is installed on the third angle steel 23. The connecting plate 61 and the rectangular frame 62 are covered with silicone to prevent the cable 9 from being damaged during movement. The L-shaped cable tray 5 is connected to the bracket 2 and positioned on one side of the well pipe 7.

[0029] II. Cable Connection and Fixing Process

[0030] Cable 9 is first wound around fixed pulley 4. One end of cable 9 passes through sealing cover 8 and connects to the detection instrument inside well casing 7. Fixed pulley 4 ensures the smoothness of cable 9 when entering well casing 7, and the rotating installation method of fixed pulley 4 can reduce the friction between cable 9 and connecting parts. The other end of cable 9 passes through the limiting groove formed by connecting plate 61 and rectangular frame 62. During the process of passing through the limiting groove, the silicone coating can prevent cable 9 from being scratched or worn. After passing through the limiting groove, cable 9 continues to extend into cable routing groove 5. Inside cable routing groove 5, partition plate 10 separates cable 9, so that multiple cables 9 are placed in an orderly manner. At the same time, at the right angle connection, limiting shaft 11 prevents cable 9 from bending or shifting excessively, ensuring that cable 9 is neat and orderly in cable routing groove 5 and avoiding tangling and mess between cables 9.

[0031] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A seismic subsurface fluid observation wellhead probe cable securing device, characterized by: The aforementioned seismic underground fluid observation wellhead probe cable fixing device includes a clamp (1), a bracket (2), a connecting shaft (3), a fixed pulley (4), a cable tray (5), and a limiting component (6). The clamp (1) is installed on the outer wall of the well pipe (7) by fastening bolts. The bracket (2) is installed on the clamp (1). The connecting shaft (3) is installed on the top of the bracket (2). The fixed pulley (4) is rotatably installed on the connecting shaft (3). There are 4 sets of fixed pulleys (4) installed at equal intervals on the connecting shaft (3). The cable tray (5) is connected to the bracket (2) and is located on one side of the well pipe (7). The limiting component (6) is installed on the bracket (2). The sealing cover (8) is installed on the top of the well pipe (7). The cable (9) is wound on the fixed pulley (4). One end passes through the sealing cover (8) and connects to the internal detection instrument. The other end passes through the limiting component (6) and extends into the cable tray (5).

2. A seismic subsurface fluid observation wellhead probe cable securing device as defined in claim 1, wherein: The bracket (2) includes a first angle steel (21), a second angle steel (22), and a third angle steel (23). Two first angle steels (21) are vertically installed on the clamp (1). The second angle steel (22) is detachably installed horizontally on the first angle steel (21) by fastening bolts. The third angle steel (23) is detachably installed on the top of the second angle steel (22) and located between the two second angle steels (22).

3. A seismic subsurface fluid observation wellhead probe cable securing device as defined in claim 2, wherein: The third angle steel (23) is rounded at the support cable (9).

4. A seismic subsurface fluid observation wellhead probe cable securing device as defined in claim 3, wherein: The limiting component (6) includes a connecting plate (61) and a rectangular frame (62). The connecting plate (61) is installed on the third angle steel (23), and the rectangular frame (62) is installed on the connecting plate (61) at equal intervals. A limiting groove is formed between the connecting plate (61) and the rectangular frame (62) to facilitate the passage of the cable (9).

5. A seismic subsurface fluid observation wellhead probe cable securing device as defined in claim 4, wherein: The connecting plate (61) and the rectangular frame (62) are both covered with silicone to prevent damage to the cable (9) during movement.

6. A seismic downhole fluid monitoring wellhead probe cable securing device as claimed in claim 1 or 2, characterized in that: The cable tray (5) is configured as an L-shaped structure with an internal cavity structure. A partition (10) is installed inside the cable tray (5) to facilitate the separation of cables (9). A limiting shaft (11) for limiting cables (9) is installed at the right-angle connection of the L-shaped structure.

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