Anti-stuck counterweight for underground equipment

Abstract

The present invention provides an anti-stuck counterweight for underground equipment, comprising an elastic rubber shell, a mobile steel ball counterweight and lubricating oil; the elastic rubber shell is divided into an upper and lower part by a rubber sealing partition; the mobile steel ball counterweight comprises a hollow steel pipe, two elastic mesh covers and a plurality of steel balls; the two elastic mesh covers are respectively located in the upper hollow cavity and the lower hollow cavity of the elastic rubber shell, the hollow steel pipe passes through the rubber sealing partition and connects the two elastic mesh covers, and the steel balls are filled in the elastic mesh covers and the hollow steel pipe; the elastic mesh covers are uniformly distributed with mesh holes. The present invention can effectively solve the problem that the underground counterweight is easily stuck during the lifting process, improves the service life of the underground equipment, and has the advantages of safety and reliability, simple structure, convenient use and no pollution.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogeological equipment, and in particular to an anti-stuck counterweight for underground equipment. Background Art

[0002] In hydrogeological engineering, groundwater testing is required. During testing, it is necessary to lower the cable or test instrument from the wellhead to the groundwater surface in the well, and a counterweight needs to be added to the cable or test instrument during the lowering process. The counterweights in the prior art are mostly fixed-shape counterweights. When the counterweight is lifted upward, it will be blocked by objects such as wires and cables, pipe clips, flanges, ropes, etc. distributed in the well. The operator can only pull it upward on the ground. The more the counterweight is pulled, the tighter it gets stuck, and finally the counterweight will be stuck and cannot be taken out. In severe cases, it will cause the well pipe to be blocked and scrapped. In view of this, it is necessary to provide an anti-stuck counterweight for underground equipment to solve the above technical problems. Summary of the invention

[0003] The technical problem solved by the present invention is to provide an anti-stuck counterweight for underground equipment. The present invention can effectively solve the problem that the underground counterweight is easily stuck during the lifting process, and improve the service life of the underground equipment. It has the advantages of safety, reliability, simple structure, easy use and no pollution.

[0004] In order to solve the above technical problems, the present invention adopts the following technical scheme: an anti-stuck counterweight for downhole equipment, characterized in that it includes an elastic rubber shell, a flowing steel ball type counterweight body located in the elastic rubber shell and lubricating oil; a rubber sealing partition is provided in the middle of the hollow cavity of the elastic rubber shell, and the rubber sealing partition divides the hollow cavity of the elastic rubber shell into two symmetrical parts in an upper and lower manner; the flowing steel ball type counterweight body includes a hollow steel pipe, two elastic mesh covers and a plurality of steel balls; the two elastic mesh covers are respectively located in the upper hollow cavity and the lower hollow cavity of the elastic rubber shell, the hollow steel pipe passes through the rubber sealing partition and connects the two elastic mesh covers, and the steel balls are filled in the elastic mesh covers and the hollow steel pipe; the lubricating oil fills the space in the elastic rubber shell except the flowing steel ball type counterweight body, and after one of the elastic mesh covers is squeezed, the steel balls therein can flow to the other elastic mesh cover through the hollow steel pipe.

[0005] Furthermore, the elastic mesh cover is provided with evenly distributed mesh holes, and lubricating oil can enter into the gaps between the steel balls in the elastic mesh cover.

[0006] Furthermore, the elastic mesh cover is an elastic steel wire mesh.

[0007] Furthermore, a rubber fixing sheet is provided at both ends of the hollow steel pipe near the elastic mesh cover. The rubber fixing sheet is provided with a number of evenly distributed through holes. Lubricating oil can pass through the through holes of the rubber fixing sheet. The rubber fixing sheet is used to fix the hollow steel pipe and the elastic mesh cover.

[0008] Furthermore, a traction ring is provided on the top of the elastic rubber shell, and the traction ring is connected to an external traction line.

[0009] The anti-stuck counterweight for underground equipment of the present invention has a variable external shape, and can be directly lowered into the well after being connected to an external traction line. When encountering obstacles, it can be dropped into a small gap through multiple attempts. As long as the counterweight can be lowered into the well, it can generally overcome various obstacles and be smoothly brought out, thus avoiding the occurrence of underground counterweight stuck accidents. The operation is simple, safe and reliable. The outer surface of the present invention is made of rubber material, and there is no heavy metal pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the present invention.

[0011] The corresponding parts names in the figure are: 1 elastic rubber shell; 2 lubricating oil; 3 rubber sealing partition; 4 hollow steel pipe; 5 elastic mesh cover; 6 steel ball; 7 rubber fixing plate; 8 traction ring; 9 external traction line. DETAILED DESCRIPTION

[0012] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods, structures and features of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments. However, the accompanying drawings are only provided for reference and explanation, and are not intended to limit the present invention.

[0013] See also Figure 1As shown, the present invention provides an anti-stuck counterweight for underground equipment, comprising an elastic rubber shell 1, a flowing steel ball type counterweight body located in the elastic rubber shell, and lubricating oil 2; a rubber sealing partition 3 is provided in the middle of the hollow cavity of the elastic rubber shell, and the rubber sealing partition divides the hollow cavity of the elastic rubber shell into two symmetrical parts in an upper and lower direction; the flowing steel ball type counterweight body comprises a hollow steel pipe 4, two elastic mesh covers 5, and a plurality of steel balls 6; the two elastic mesh covers 5 are respectively located in the upper hollow cavity and the lower hollow cavity of the elastic rubber shell, the hollow steel pipe 4 passes through the rubber sealing partition 3 and connects the two elastic mesh covers 5, and the steel balls 6 are filled in the elastic mesh covers 5 and the hollow steel pipe 4; the lubricating oil 2 fills the space in the elastic rubber shell except the flowing steel ball type counterweight body, and after one elastic mesh cover 5 is squeezed, the steel balls 6 therein can flow into the other elastic mesh cover 5 through the hollow steel pipe 4. The elastic mesh cover 5 is uniformly distributed with mesh holes, and the lubricating oil can enter the gaps between the steel balls in the elastic mesh cover. The elastic mesh cover is an elastic steel wire mesh. A rubber fixing sheet 7 is provided at each end of the hollow steel pipe 4 near the elastic mesh cover. The rubber fixing sheet is provided with a plurality of evenly distributed through holes, through which lubricating oil can pass. The rubber fixing sheet is used to fix the hollow steel pipe and the elastic mesh cover. A traction ring 8 is provided on the top of the elastic rubber housing, and the traction ring is connected to an external traction line 9.

[0014] When the present invention is used in practice, the traction ring 8 can be directly lowered into the well after being connected to the external traction line 9. When encountering obstacles, it can be found through multiple attempts to fall into a small gap. When the counterweight body is lifted upward, if it encounters obstacles such as wires and cables, pipe buckles, flanges, ropes, etc., the upper part of the elastic rubber shell 1 is squeezed and the pressure is transmitted inward, so that the lubricating oil in the upper hollow cavity of the elastic rubber shell moves down through the hollow steel pipe 4 together with the steel balls 6 in the upper elastic mesh cover 5, and the upper volume of the counterweight body becomes smaller. At this time, the upper part of the counterweight body can smoothly pass through the obstacle area. In the process of the counterweight moving upward, the maximum pressure position inside the elastic rubber shell 1 also moves downward. At this time, when the upper pressure is less than the lower pressure, the lower lubricating oil moves up through the hollow steel pipe 4 together with the steel balls 6 in the lower elastic mesh cover 5, and the upper part of the counterweight body gradually becomes larger, and the lower part gradually becomes smaller, so that the overall counterweight passes through the obstacle area without being stuck.

[0015] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to the above embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An anti-stuck counterweight for underground equipment, characterized in that: The invention comprises an elastic rubber shell, a flowing steel ball type counterweight body and lubricating oil in the elastic rubber shell; a rubber sealing partition is arranged in the middle of the hollow cavity of the elastic rubber shell, and the rubber sealing partition divides the hollow cavity of the elastic rubber shell into two symmetrical parts in an upper and a lower direction; the flowing steel ball type counterweight body comprises a hollow steel pipe, two elastic mesh covers and a plurality of steel balls; the two elastic mesh covers are respectively arranged in the upper hollow cavity and the lower hollow cavity of the elastic rubber shell, the hollow steel pipe passes through the rubber sealing partition and connects the two elastic mesh covers, and the steel balls are filled in the elastic mesh covers and the hollow steel pipe; the lubricating oil connects the elastic rubber shell to the hollow cavity of the elastic rubber shell; the elastic rubber shell is connected to the hollow cavity of the elastic rubber shell; ... The space in the rubber shell except for the flowing steel ball type counterweight is filled, and after one elastic mesh cover is squeezed, the steel balls in it can flow through the hollow steel pipe to the other elastic mesh cover; the elastic mesh cover is evenly distributed with mesh holes, and lubricating oil can enter the gaps between the steel balls in the elastic mesh cover; the elastic mesh cover is an elastic steel wire mesh; a rubber fixing sheet is respectively provided at the positions near the elastic mesh cover at both ends of the hollow steel pipe, and the rubber fixing sheet is provided with a plurality of evenly distributed through holes, and lubricating oil can pass through the through holes of the rubber fixing sheet, and the rubber fixing sheet is used to fix the hollow steel pipe and the elastic mesh cover.

2. The anti-stuck counterweight for underground equipment according to claim 1, characterized in that: A traction ring is provided on the top of the elastic rubber shell, and the traction ring is connected to an external traction line.

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