High-position long drill hole iron sleeve installation guide device

Abstract

The utility model discloses a high-position long drill hole iron casing pipe installation guiding device which comprises an inner pipe, internal threads are arranged at the two ends of the inner pipe respectively, a casing pipe is fixedly connected to the periphery of the inner pipe in a sleeved mode, and chamfers are arranged between the two ends of the casing pipe and the periphery of the inner pipe. The casing pipe installation guiding device is designed, the casing pipe installation guiding device is installed at the position 0.2 m away from the interior of the first bag, the bags are protected, and the effect of two-blocking and one-injecting of an iron pipe in the whole drilling process is achieved.

Description

Technical Field

[0001] The utility model relates to a high-position long-drilling iron casing installation guide device, belonging to the technical field of drilling auxiliary equipment. Background Art

[0002] A mine used a long borehole instead of a high-extraction tunnel in the construction of a high-level drilling site on a mining face to solve the problem of gas pressure relief during mining. The depth of all boreholes was more than 200 meters. Initially, Ф50mm PVC casing was used, but it was impossible to run the casing throughout the entire process. Therefore, it was changed to Ф50mm iron pipe for full casing.

[0003] During the installation of the iron casing, the first bag is easily damaged by the friction between the iron pipe and the surrounding area of ​​the drill hole, and the sealing grouting cannot achieve two blocking and one grouting. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a high-position long-drilled iron casing installation guide device to solve the technical problems existing in the above-mentioned prior art.

[0005] The technical solution adopted by the utility model is: a high-position long-drilled iron casing installation guide device, including an inner tube, both ends of the inner tube are respectively provided with internal threads, the outer periphery of the inner tube is fixedly sleeved with a casing, and chamfers are provided between the two ends of the casing and the outer periphery of the inner tube.

[0006] Preferably, the inner tube is a G2-inch tube with a length of 350-400 mm, and the sleeve is a G3-inch tube with a length of 110-120 mm.

[0007] Preferably, the length of the threads at both ends of the inner tube is 20-40 mm.

[0008] Preferably, the distances between the two ends of the sleeve and the two ends of the inner tube are equal.

[0009] Preferably, the sleeve and the inner tube are both iron tubes.

[0010] The beneficial effects of this utility model: Compared with the existing technology, the utility model has a casing installation guide device designed. A casing installation guide device is installed 0.2 meters inward from the first bladder bag to protect the bladder bag, achieving the effect of two-way blocking and one-time injection of the iron pipe during the entire drilling process. After a four-month trial, it has been promoted and used in all mining working faces throughout the mine, and it has been proven to be stable, safe, reliable, economical and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0012] The reference numerals in the drawings of the specification include: internal thread section 1, inner tube 2, sleeve 3, chamfer 4. DETAILED DESCRIPTION

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0014] Example 1:

[0015] A high-position long-drilled iron casing installation guide device, such as Figure 1 As shown, the inner tube 2 is a G2-inch tube with a length of 350 mm. An internal threaded section 1 is provided at each end of the inner tube 2. The inner tube 2 is fixedly sleeved with a sleeve 3 on its outer periphery. Chamfers 4 are provided between the ends of the sleeve 3 and the outer periphery of the inner tube 2. The sleeve 3 is a G3-inch tube with a length of 117 mm. In this embodiment, the ends of the sleeve 3 are equidistant from the ends of the inner tube 2. Both the sleeve 3 and the inner tube 2 are iron pipes.

[0016] An iron casing installation guide was installed 0.2 meters inward from the first bladder to protect the bladder, achieving the double-blocking and one-injection effect of the iron pipe throughout the drilling process. After a four-month trial, it was promoted and used in all mining working faces throughout the mine, demonstrating stability, safety, reliability, economy, and efficiency.

[0017] The above is only a specific implementation method of the present invention, but the scope of protection of the present invention is not limited to this. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A high level long borehole iron casing installation guide characterized by: The inner tube is provided with internal threads at both ends, and a sleeve is fixedly sleeved on the outer periphery of the inner tube, and a chamfer is arranged between the outer periphery of the sleeve and the two ends of the inner tube.

2. A high level long borehole iron casing installation guide device according to claim 1, characterized in that: The inner tube is a G2 inch tube with a length of 350-400 mm, and the sleeve is a G3 inch tube with a length of 110-120 mm.

3. A high level long borehole iron casing installation guide device according to claim 1, characterized in that: The length of the threads at both ends of the inner tube is 20-40 mm.

4. A high long borehole iron casing installation guide device according to claim 1, characterized in that: The distance between the two ends of the sleeve and the two ends of the inner tube is equal.

5. A high long borehole iron casing installation guide device according to claim 1, characterized in that: The sleeve and the inner tube are both iron pipes.

Images