Anti-caving casing connection device for sand formation geology and installation method

Abstract

The application provides a hole collapse prevention casing pipe connecting device for sand layer geology and a mounting method, which comprises an upper communicating pipe, a lower communicating pipe, a sealing mechanism, a connecting mechanism, a locking mechanism and a compacting mechanism. The upper and lower communicating pipes are both cylindrical pipe structures with a hole cavity in the center, and are symmetrically connected. The sealing mechanism is arranged at the opening of the hole cavity and corresponds to the leakage prevention. The connecting mechanism is arranged on the abutting surface of the upper and lower communicating pipes and corresponds to the insertion and connection. The locking mechanism is arranged on the outer wall of the upper and lower communicating pipes and prevents the disengagement. The compacting mechanism is arranged on the outer wall of the connection of the upper and lower communicating pipes and is compacted. The application effectively solves the problems of the fixation between the pipeline and the wall surface, the wall surface sealing and the fastening, and has good sealing performance.

Description

Technical Field

[0001] This invention belongs to the technical field of pipeline connection, and particularly relates to an anti-collapse hole sleeve connection device and installation method for sandy geological layers. Background Technology

[0002] The working principle of an anchor bolt is that the pull-out load is transferred to the bolt body through the interaction between the longitudinal steel reinforcement and the concrete, and then the load is transferred to the surrounding strata through the friction between the bolt body and the surrounding soil and rock. During anchor bolt drilling, hole collapse frequently occurs due to the influence of sandy geological conditions. A more economical solution is to place casings inside the hole; however, due to the limited length of the casings, multiple casings are required for a single drilling operation, and the sealing effect at the casing joints is often poor, thus affecting the drilling results. Therefore, it is indeed necessary to improve the existing technology to address its shortcomings. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a hole casing connection device and installation method for sandy geological layers, which addresses the above-mentioned problems.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a casing connection device for preventing collapse in sandy geology, characterized in that it includes an upper connecting pipe, a lower connecting pipe, a sealing mechanism, a connecting mechanism, a locking mechanism, and a compaction mechanism. The upper and lower connecting pipes are both cylindrical pipe structures with a central cavity, which are symmetrically fitted together. The sealing mechanism is located at the opening of the cavity of the upper and lower connecting pipes, which is correspondingly engaged to prevent leakage. The connecting mechanism is located on the mating surface of the upper and lower connecting pipes, which are correspondingly inserted and connected. The locking mechanism is located on the outer wall of the upper and lower connecting pipes, which is wound to prevent detachment. The compaction mechanism is located on the outer wall of the connection between the upper and lower connecting pipes, which is compacted tightly.

[0005] According to the above scheme, the sealing mechanism includes an upper sealing ring and a lower sealing ring. The opening of the cavity of the upper and lower connecting pipes is provided with an annular sealing groove, and the upper and lower sealing rings are respectively placed in the sealing groove.

[0006] According to the above scheme, the connecting mechanism includes an insertion rod and an insertion hole. The insertion rod is embedded in the upper or lower connecting pipe with its end exposed. The insertion hole is located in the lower or upper connecting pipe, and the insertion rod and the insertion hole are configured to be inserted together.

[0007] According to the above scheme, the locking mechanism includes locking pins and binding wires. The locking pins are symmetrically installed on the outer walls of the upper and lower connecting pipes. The binding wires are two turns, one turn passing around the locking pins on the left side of the upper connecting pipe and the right side of the lower connecting pipe, and the other turn passing around the locking pins on the right side of the upper connecting pipe and the left side of the lower connecting pipe.

[0008] According to the above scheme, the compaction mechanism includes a fixed pipe support, a compaction screw, and a compaction nut. The fixed pipe support is a U-shaped plate structure, with the openings of the two fixed pipe supports surrounding the connection between the upper and lower connecting pipes. The inner wall of the fixed pipe support is in contact with the outer wall of the upper and lower connecting pipes. The outer wall of the connection between the upper and lower connecting pipes is provided with a plurality of compaction holes evenly spaced along the circumference. A through hole is provided at a corresponding position on the fixed pipe support. The compaction screw passes through the through hole and extends into the compaction hole, and is tightly fixed in place by the compaction nut.

[0009] According to the above scheme, the mating surfaces of the upper and lower sealing rings are respectively provided with interlocking teeth, which mesh with each other.

[0010] The installation method of the anti-collapse borehole casing connection device for sandy geology is characterized by the following steps:

[0011] S1) Connection of upper and lower connecting pipes: Place the two sleeves to be connected into the upper and lower connecting pipes respectively, place the upper and lower sealing rings into the sealing grooves, and then connect the upper and lower connecting pipes. The teeth on the upper and lower sealing rings engage, and the insertion rod is inserted into the insertion hole to complete the connection of the upper and lower connecting pipes.

[0012] S2) Joint compression: Place the fixed pipe support over the joint of the upper and lower connecting pipes, insert the compression screw, and then tighten the position with the compression nut;

[0013] S3) Device fixing: Take two turns of wire, one turn and wrap it around the locking pins on the left side of the upper connecting pipe and the right side of the lower connecting pipe, and the other turn and wrap it around the locking pins on the right side of the upper connecting pipe and the left side of the lower connecting pipe to complete the installation.

[0014] The beneficial effects of this invention are: it provides a connection device and installation method for anti-collapse borehole sleeves in sandy geology, which effectively solves the problems of fixing the pipe and the wall, as well as sealing and fastening the wall. The connection and positioning are achieved by inserting a rod, and a sealing ring is set at the contact surface to effectively prevent leakage. A locking post is set on the outer wall, and the stability of the device is further improved by wrapping with wire. A compaction mechanism is also set to improve the tightness of the device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the installation state according to an embodiment of the present invention.

[0017] Figure 2This is a schematic diagram of the split state according to an embodiment of the present invention.

[0018] Figure 3 This is a top view of the compaction state according to an embodiment of the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., 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 product of this application is in use. They are only for the convenience of describing this application 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 on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] The features and performance of this application will be further described in detail below with reference to the embodiments.

[0027] like Figures 1-3 As shown, the anti-collapse casing connection device for sandy geology includes an upper connecting pipe 1, a lower connecting pipe 2, a sealing mechanism, a connecting mechanism, a locking mechanism, and a compaction mechanism. Both the upper and lower connecting pipes are cylindrical pipe structures with a central cavity, symmetrically fitted together. The sealing mechanism is located at the opening of the cavity of the upper and lower connecting pipes, correspondingly locking to prevent leakage. The connecting mechanism is located on the mating surface of the upper and lower connecting pipes, correspondingly inserting and connecting. The locking mechanism is located on the outer wall of the upper and lower connecting pipes, winding to prevent detachment. The compaction mechanism is located on the outer wall of the connection between the upper and lower connecting pipes, compacting tightly.

[0028] The sealing mechanism includes an upper sealing ring 3 and a lower sealing ring 4. The opening of the cavity of the upper and lower connecting pipes is provided with an annular sealing groove. The upper and lower sealing rings are respectively placed in the sealing groove. The mating surfaces of the upper and lower sealing rings are respectively provided with interlocking teeth 5, which can effectively prevent leakage.

[0029] The connecting mechanism includes an insertion rod 6 and an insertion hole 7. The insertion rod is embedded in the upper or lower connecting pipe with its end exposed. The insertion hole is located in the lower or upper connecting pipe. The insertion rod and the insertion hole are configured to achieve the positioning connection of the upper and lower connecting pipes through the insertion rod.

[0030] The locking mechanism includes locking pins 8 and binding wires. The locking pins are symmetrically installed on the outer walls of the upper and lower connecting pipes. The binding wires are two turns. One turn passes around the locking pins on the left side of the upper connecting pipe and the right side of the lower connecting pipe, and the other turn passes around the locking pins on the right side of the upper connecting pipe and the left side of the lower connecting pipe, forming a locking state, which can achieve the function of fixing the pipe.

[0031] The compaction mechanism includes a fixed pipe support 9, a compaction screw 10, and a compaction nut 11. The fixed pipe support is a U-shaped plate structure. The openings of the two fixed pipe supports are closed relative to the connection of the upper and lower connecting pipes. The inner wall is in contact with the outer wall of the upper and lower connecting pipes. Multiple compaction holes 12 are evenly spaced along the circumference of the outer wall of the connection of the upper and lower connecting pipes. A through hole is provided at the corresponding position on the fixed pipe support. The compaction screw passes through the through hole and extends into the compaction hole. It is fixed in place by the compaction nut.

[0032] The installation method for the anti-collapse borehole casing connection device used in sandy geological layers includes the following steps:

[0033] S1) Connection of upper and lower connecting pipes: Place the two sleeves 13 to be connected into the upper and lower connecting pipes respectively, place the upper and lower sealing rings into the sealing grooves, and then connect the upper and lower connecting pipes. The teeth on the upper and lower sealing rings engage, and the insertion rod is inserted into the insertion hole to complete the connection of the upper and lower connecting pipes.

[0034] S2) Joint compression: Place the fixed pipe support over the joint of the upper and lower connecting pipes, insert the compression screw, and then tighten the position with the compression nut;

[0035] S3) Device fixing: Take two turns of wire, one turn and wrap it around the locking pins on the left side of the upper connecting pipe and the right side of the lower connecting pipe, and the other turn and wrap it around the locking pins on the right side of the upper connecting pipe and the left side of the lower connecting pipe to complete the installation.

[0036] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A casing connection device for preventing collapse in sandy geological layers, characterized in that, The system includes an upper connecting pipe, a lower connecting pipe, a sealing mechanism, a connecting mechanism, a locking mechanism, and a compaction mechanism. Both the upper and lower connecting pipes are cylindrical tubes with a central cavity, symmetrically fitted together. The sealing mechanism is located at the opening of the cavity in both the upper and lower connecting pipes, correspondingly engaging to prevent leakage. The connecting mechanism is located on the mating surfaces of the upper and lower connecting pipes, correspondingly inserting and connecting them. The locking mechanism is located on the outer wall of both the upper and lower connecting pipes, winding to prevent detachment. The compaction mechanism is located on the outer wall of the connection point of the upper and lower connecting pipes, compacting tightly. The sealing mechanism includes an upper sealing ring and a lower sealing ring. An annular sealing groove is provided at the opening of the cavity in both the upper and lower connecting pipes, and the upper and lower sealing rings are respectively placed within the sealing groove. The connecting mechanism includes an insertion rod and an insertion hole. The insertion rod is embedded in the upper or lower connecting pipe, with its end protruding. The insertion hole is located inside the lower or upper connecting pipe, and the insertion rod and the insertion hole are configured accordingly. The locking mechanism includes locking pins and binding wires. The locking pins are symmetrically installed on the outer walls of the upper and lower connecting pipes. The binding wires are two turns, one turn passing around the locking pins on the left side of the upper connecting pipe and the right side of the lower connecting pipe, and the other turn passing around the locking pins on the right side of the upper connecting pipe and the left side of the lower connecting pipe. The compaction mechanism includes a fixed pipe support, a compaction screw, and a compaction nut. The fixed pipe support is a U-shaped plate structure. The openings of the two fixed pipe supports are closed relative to the connection of the upper and lower connecting pipes. The inner wall is in contact with the outer wall of the upper and lower connecting pipes. Multiple compaction holes are evenly spaced along the circumference of the outer wall of the connection of the upper and lower connecting pipes. A through hole is provided at a corresponding position on the fixed pipe support. The compaction screw passes through the through hole and extends into the compaction hole, and is fixed in place by the compaction nut.

2. The anti-collapse casing connection device for sandy geology according to claim 1, characterized in that, The upper and lower sealing rings are respectively provided with interlocking teeth on their mating surfaces, which mesh with each other.

3. The installation method of the anti-collapse hole casing connection device for sandy geology as described in claim 2, characterized in that, Includes the following steps: S1) Connection of upper and lower connecting pipes: Place the two sleeves to be connected into the upper and lower connecting pipes respectively, place the upper and lower sealing rings into the sealing grooves, and then connect the upper and lower connecting pipes. The teeth on the upper and lower sealing rings engage, and the insertion rod is inserted into the hole to complete the connection of the upper and lower connecting pipes. S2) Joint compression: Place the fixed pipe support over the joint of the upper and lower connecting pipes, insert the compression screw, and then tighten the position with the compression nut; S3) Device fixing: Take two turns of wire, one turn and wrap it around the locking pins on the left side of the upper connecting pipe and the right side of the lower connecting pipe, and the other turn and wrap it around the locking pins on the right side of the upper connecting pipe and the left side of the lower connecting pipe to complete the installation.

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