Blanking hole working tube suspension support structure

Abstract

This invention discloses a suspension support structure for the working pipe of a discharge hole, including an annular steel plate beam and a working pipe joint. A supporting steel plate is welded circumferentially to the side wall of the working pipe joint. The outer diameter of the supporting steel plate is larger than the inner diameter of the annular steel plate beam. One end of the working pipe joint is inserted into the annular steel plate beam, and the supporting steel plate rests on the surface of the annular steel plate beam. The annular steel plate beam is installed on the wellhead, and its outer diameter is larger than the diameter of the wellhead. The end of the working pipe joint inserted into the annular steel plate beam is fixedly connected to the end of the working pipe inside the discharge hole. By setting the working pipe joint, it is easy to connect to the working pipe of the discharge hole, and in conjunction with the annular steel plate beam, it facilitates the disassembly and assembly of the working pipe. By arranging a ring of supporting steel plates around the working pipe joint, axial support is provided. Multiple supporting steel plates can evenly distribute the pressure onto the upper surface of the annular steel plate beam, improving the stability and safety of the suspension.

Description

Technical Field

[0001] This invention relates to the field of coal mine material feeding pipeline technology. Specifically, it relates to a suspension support structure for the working pipe of the material feeding hole. Background Technology

[0002] The main functions of coal mine discharge holes are twofold: firstly, to alleviate transportation pressure in auxiliary shafts, and secondly, to save on mine construction costs. The diameter of discharge holes is smaller than that of discharge shafts. For single-layer pipe discharge holes, the rough diameter is generally no more than 500mm, while for double-layer pipe discharge holes, it is generally no more than 1000mm. Early coal mine discharge holes were mainly single-layer pipes; however, in recent years, with improvements in drilling and installation equipment capabilities, double-layer pipes have become more common. In double-layer pipe discharge holes, the outer protective sleeve is fixed to the rock wall, while the inner pipe serves as the working pipe for material discharge. During material discharge, friction against the inner pipe wall results in a short lifespan for the inner pipe. When the inner pipe is damaged, it is lifted out of the protective sleeve and a new working pipe is installed. The working pipe of the discharge hole is independently suspended inside the protective sleeve. The weight of the working pipe increases with the depth of the hole, ranging from tens of tons to over a hundred tons. The suspension structure must not only bear the weight of the working pipe, but also withstand the impact forces from different directions of the material. How to safely suspend the working pipe of the discharge hole in the outer tube and make it easy to replace the working pipe of the discharge hole has always been an important issue. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to provide a simple structure that enables the feed hole working pipe to be suspended in the protective sleeve for a long time.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a suspension support structure for the working pipe of the discharge hole, comprising an annular steel plate beam and a working pipe joint, wherein a supporting steel plate is welded circumferentially to the side wall of the working pipe joint, the outer diameter of the supporting steel plate being larger than the inner diameter of the annular steel plate beam, one end of the working pipe joint being inserted into the annular steel plate beam, and the supporting steel plate being supported on the surface of the annular steel plate beam; the annular steel plate beam is installed on the wellhead, the outer diameter of the annular steel plate beam being larger than the diameter of the wellhead, and the end of the working pipe joint inserted into the annular steel plate beam being fixedly connected to the end of the working pipe in the discharge hole.

[0005] The above-mentioned material discharge hole working pipe suspension support structure has three or more supporting steel plates welded at equal intervals in the circumferential direction of the working pipe joint. The diameter of the circumference of the side of the three or more supporting steel plates away from the working pipe joint is larger than the inner diameter of the annular steel plate beam.

[0006] In the above-mentioned material discharge hole working pipe suspension support structure, the supporting steel plate is welded along the axial direction of the working pipe joint to the outer wall surface of the working pipe joint.

[0007] The above-mentioned suspension support structure for the working pipe of the discharge hole has a support steel plate in the shape of a right-angled trapezoid. One waist of the support steel plate on the right-angle side is welded to the side wall of the working pipe joint, and the bottom of the support steel plate is supported on the surface of the annular steel plate beam.

[0008] In the above-mentioned suspension support structure for the working pipe of the discharge hole, the surfaces of the supporting steel plate and the annular steel plate beam are perpendicular to each other.

[0009] In the above-mentioned suspension support structure for the working pipe of the discharge hole, the outer diameter of the working pipe joint is smaller than the inner diameter of the annular steel plate beam, the distance between the outer wall of the working pipe joint and the inner wall of the annular steel plate beam is A, and the length of the supporting steel plate overlapping the annular steel plate beam is B, where A < B.

[0010] The above-mentioned suspension support structure for the working pipe of the discharge hole includes an annular steel plate beam comprising an outer support cylinder, an inner support cylinder, an annular upper cover plate, and an annular lower cover plate. The inner support cylinder is coaxially arranged inside the outer support cylinder. The outer edges of the annular upper cover plate and the annular lower cover plate are respectively welded to both ends of the outer support cylinder, and the inner edges of the annular upper cover plate and the annular lower cover plate are respectively welded to both ends of the inner support cylinder.

[0011] In the above-mentioned suspension support structure for the working pipe of the discharge hole, a partition is provided in the space between the outer support cylinder and the inner support cylinder, and the two sides of the partition are respectively welded to the inner support cylinder and the outer support cylinder.

[0012] In the above-mentioned suspension support structure for the working pipe of the discharge hole, two or more partitions are equally spaced in the space between the outer support cylinder and the inner support cylinder.

[0013] In the above-mentioned suspension support structure for the working pipe of the discharge hole, the density of the partition plate is greater than the density of the supporting steel plate.

[0014] The technical solution of the present invention achieves the following beneficial technical effects:

[0015] 1. By setting a working pipe connector, it can be easily connected to the working pipe of the discharge hole, and with the cooperation of the annular steel plate beam, it is easy to disassemble and assemble the working pipe of the discharge hole, so as to realize the quick replacement of the working pipe of the discharge hole.

[0016] 2. By arranging a ring of supporting steel plates around the working pipe joint, axial support is provided to suspend the working pipe of the discharge hole. Multiple supporting steel plates can evenly distribute the pressure onto the surface of the annular steel plate beam. The annular steel plate beam, designed with multiple square cavities, further disperses the pressure, ensuring uniform stress on the wellhead and improving the stability and safety of the suspension. When the working pipe of the discharge hole is suspended, the suspension support structure must not only bear the weight of the working pipe but also withstand the impact of the material during the discharge process. To mitigate the impact force generated by the working pipe, this invention utilizes a supporting steel plate supported on an annular steel plate beam. A certain gap exists between the working pipe joint and the annular steel plate beam, allowing the working pipe joint to move radially and axially within a certain range within the annular steel plate beam. This allows for a slightly floating connection, preventing the lateral impact force borne by the working pipe from directly acting on the wellhead. Simultaneously, the square-shaped cavity structure of the annular steel plate beam provides a buffering effect, further preventing the axial impact force from directly acting on the wellhead. This ensures that the working pipe of the discharge hole can be safely suspended within the protective casing for an extended period. Attached Figure Description

[0017] Figure 1 A front view schematic diagram of the suspension support structure for the feed hole working pipe of the present invention;

[0018] Figure 2 A top view of the suspension support structure for the feed hole working pipe of the present invention;

[0019] Figure 3 A top-view perspective view of the annular steel plate beam of this invention;

[0020] Figure 4 A front view sectional schematic diagram of the annular steel plate beam of the present invention.

[0021] The reference numerals in the figure are as follows: 1-ring steel plate beam; 2-supporting steel plate; 3-working pipe joint; 4-ring upper cover plate; 5-ring lower cover plate; 6-outer support cylinder; 7-inner support cylinder; 8-partition plate. Detailed Implementation

[0022] The suspension support structure of the feeding hole working pipe in this embodiment is as follows: Figure 1 As shown, the device includes an annular steel plate beam 1 and a working pipe joint 3. A supporting steel plate 2 is welded circumferentially to the side wall of the working pipe joint 3. The outer diameter of the supporting steel plate 2 is larger than the inner diameter of the annular steel plate beam 1. One end of the working pipe joint 3 is inserted into the annular steel plate beam 1, and the supporting steel plate 2 is supported on the surface of the annular steel plate beam 1. The annular steel plate beam 1 is installed on the wellhead, and the outer diameter of the annular steel plate beam 1 is larger than the diameter of the wellhead. The end of the working pipe joint 3 inserted into the annular steel plate beam 1 is fixedly connected to the end of the working pipe in the discharge hole.

[0023] like Figure 2 As shown, the supporting steel plate 2 is welded along the axial direction of the working pipe joint 3 to the outer wall surface of the working pipe joint 3, and the surfaces of the supporting steel plate 2 and the annular steel plate beam 1 are perpendicular to each other. Six supporting steel plates 2 are welded at equal intervals in the circumferential direction of the working pipe joint 3, and the diameter of the circumference of the side of the six supporting steel plates 2 away from the working pipe joint 3 is larger than the inner diameter of the annular steel plate beam 1.

[0024] like Figure 1 As shown, the supporting steel plate 2 is a right-angled trapezoid. One side of the supporting steel plate 2 located on the right-angle side is welded to the side wall of the working pipe joint 3. The lower base of the supporting steel plate 2 is supported on the surface of the shaped steel plate beam 1, as shown. Figure 2 As shown, the outer diameter of the working pipe joint 3 is smaller than the inner diameter of the annular steel plate beam 1, the distance between the outer wall of the working pipe joint 3 and the inner wall of the annular steel plate beam 1 is A, and the length of the supporting steel plate 2 overlapping the annular steel plate beam 1 is B, A < B, so that the working pipe joint 3 can move within a certain range within the annular steel plate beam 1, while also preventing the working pipe joint 3 from falling out of the annular steel plate beam 1, thus ensuring stability.

[0025] like Figure 3-4 As shown, the annular steel plate beam 1 includes an outer support cylinder 6, an inner support cylinder 7, an annular upper cover plate 4, and an annular lower cover plate 5. The inner support cylinder 7 is coaxially arranged inside the outer support cylinder 6. The outer edges of the annular upper cover plate 4 and the annular lower cover plate 5 are respectively welded to both ends of the outer support cylinder 6, and the inner edges of the annular upper cover plate 4 and the annular lower cover plate 5 are respectively welded to both ends of the inner support cylinder 7. A partition plate 8 is provided in the space between the outer support cylinder 6 and the inner support cylinder 7. The two sides of the partition plate 8 are respectively welded to the inner support cylinder 7 and the outer support cylinder 6. Two or more partition plates 8 are equally spaced in the space between the outer support cylinder 6 and the inner support cylinder 7. The arrangement density of the partition plates 8 between the outer support cylinder 6 and the inner support cylinder 7 is greater than the arrangement density of the support steel plate 2 on the working pipe joint 3.

[0026] After the annular steel plate beam 1 is assembled, it is placed at the wellhead, and the diameter of the wellhead generally does not exceed the inner diameter of the annular steel plate beam 1. When the last section of the working pipe is connected to the well, the supporting steel plate 2 is first welded to the working pipe joint 3, and then the working pipe joint 3 is connected to the last section of the working pipe. The last section of the working pipe is then connected to the working pipe that has already entered the well. In this way, the weight of the entire working pipe rests on the annular steel plate beam 1 through the right-angled trapezoidal supporting steel plate 2.

[0027] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of the claims of this patent application.

Claims

1. A suspension support structure for the working pipe of the discharge hole, characterized in that, The device includes an annular steel plate beam (1) and a working pipe joint (3). A supporting steel plate (2) is welded circumferentially to the side wall of the working pipe joint (3). The outer diameter of the supporting steel plate (2) is larger than the inner diameter of the annular steel plate beam (1). One end of the working pipe joint (3) is inserted into the annular steel plate beam (1), and the supporting steel plate (2) is supported on the surface of the annular steel plate beam (1). The annular steel plate beam (1) is installed on the wellhead. The outer diameter of the annular steel plate beam (1) is larger than the diameter of the wellhead. One end of the working pipe joint (3) inserted into the annular steel plate beam (1) is fixedly connected to the end of the working pipe in the discharge hole. Three or more supporting steel plates (2) are welded at equal intervals in the circumferential direction of the working pipe joint (3). The diameter of the circumference of the side of the three or more supporting steel plates (2) away from the working pipe joint (3) is larger than the inner diameter of the annular steel plate beam (1). The supporting steel plate (2) is welded along the axial direction of the working pipe joint (3) to the outer wall surface of the working pipe joint (3). The supporting steel plate (2) is in the shape of a right trapezoid. One waist of the supporting steel plate (2) located on the right angle side is welded to the side wall of the working pipe joint (3). The bottom of the supporting steel plate (2) is supported on the surface of the annular steel plate beam (1). The outer diameter of the working pipe joint (3) is smaller than the inner diameter of the annular steel plate beam (1), the distance between the outer wall of the working pipe joint (3) and the inner wall of the annular steel plate beam (1) is A, and the length of the supporting steel plate (2) overlapping the annular steel plate beam (1) is B, A < B; By setting a support steel plate to support the ring steel plate beam, and having a certain gap between the working pipe joint and the ring steel plate beam, the working pipe joint can move radially and axially within a certain range within the ring steel plate beam.

2. The suspension support structure for the working pipe of the discharge hole according to claim 1, characterized in that, The surfaces of the supporting steel plate (2) and the annular steel plate beam (1) are perpendicular to each other.

3. The suspension support structure for the working pipe of the discharge hole according to claim 1, characterized in that, The annular steel plate beam (1) includes an outer support cylinder (6), an inner support cylinder (7), an annular upper cover plate (4), and an annular lower cover plate (5). The inner support cylinder (7) is coaxially arranged inside the outer support cylinder (6). The outer edges of the annular upper cover plate (4) and the annular lower cover plate (5) are respectively welded to the two ends of the outer support cylinder (6). The inner edges of the annular upper cover plate (4) and the annular lower cover plate (5) are respectively welded to the two ends of the inner support cylinder (7).

4. The suspension support structure for the working pipe of the discharge hole according to claim 3, characterized in that, A partition (8) is provided in the space between the outer support cylinder (6) and the inner support cylinder (7), and the two sides of the partition (8) are welded to the inner support cylinder (7) and the outer support cylinder (6) respectively.

5. The suspension support structure for the feeding hole working pipe according to claim 4, characterized in that, Two or more partitions (8) are provided at equal intervals in the space between the outer support cylinder (6) and the inner support cylinder (7).

6. The suspension support structure for the feeding hole working pipe according to claim 5, characterized in that, The density of the partition (8) is greater than the density of the supporting steel plate (2).

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