Automatic packer for underground water sealing cave depot drilling

Abstract

The utility model provides an automatic packer for underground water-sealed cave depot drilling, which relates to the technical field of water-sealed cave depot engineering and comprises a main shaft, a rubber drum and a shaft end base positioned in the rubber drum, the main shaft is hollow; the bottom end of the rubber drum is closed, and the top end of the rubber drum is open and fixed to the shaft end base. The main shaft and the rubber drum are installed through the shaft end base. The main shaft is sleeved with a sliding ring in a sliding mode. The rubber drum is connected with the outer side wall of the sliding ring through a plurality of telescopic ropes; a plurality of first tension springs are arranged between the sliding ring and the shaft end base; an adjusting mechanism is mounted in the main shaft, the adjusting mechanism comprises two limiting rods, and a second tension spring is arranged between the two limiting rods; the opposite sides of the two limiting rods are each provided with a limiting tongue piece. The two limiting tongue pieces contract and expand under the action of the second tension spring, so that the problem that in the prior art, a mechanical plug or a water pressure plug needs a large number of auxiliary pressurizing devices and pipelines is solved.

Description

Technical Field

[0001] The utility model relates to a water-sealed cavern engineering technology, in particular to an automatic packer for drilling underground water-sealed caverns. Background Art

[0002] The water curtain tunnel and main cavern are the main components of the underground water-sealed cavern project. During the construction period, when drilling in the water curtain tunnel above the main cavern or on the surface for monitoring construction, the borehole may penetrate the rock mass and enter the main cavern due to inaccurate control of the borehole deviation and local rock fragmentation. In order to ensure the airtightness of the cavern, the borehole needs to be grouting-sealed.

[0003] However, traditional mechanical plugs or hydraulic plugs are heavy and complicated to install, and require many auxiliary pressurizing devices and pipelines, resulting in low installation efficiency.

[0004] Therefore, an automatic packer for underground water-sealed cavern drilling is proposed. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies of the prior art, the utility model provides an automatic packer for drilling underground water-sealed caverns, which solves the problem of multiple auxiliary pressurizing devices and pipelines required for mechanical plugs or hydraulic plugs in the prior art.

[0007] (II) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] In the utility model, the packer comprises a main shaft, a rubber drum and a shaft end base located inside the rubber drum;

[0010] The main shaft is hollow;

[0011] The rubber drum is closed at the bottom and open at the top, and is fixed on the shaft end base;

[0012] The main shaft is installed with the rubber drum through the shaft end base;

[0013] The sliding sleeve on the main shaft is provided with a sliding ring;

[0014] The rubber drum is connected to the outer side wall of the sliding ring via a plurality of retractable ropes;

[0015] A plurality of first tension springs are arranged between the sliding ring and the shaft end base;

[0016] An adjusting mechanism is installed inside the main shaft, and the adjusting mechanism includes two limiting rods, and a second tension spring is arranged between the two limiting rods;

[0017] The two limiting rods are respectively provided with limiting tongues on the opposite sides thereof, and the main shaft is provided with at least two limiting grooves, and the limiting tongues are located in the corresponding limiting grooves;

[0018] In the initial state, the limiting tongue piece extends to the outside of the limiting groove under the action of the second tension spring.

[0019] Furthermore, the adjustment mechanism also includes a bearing and a fixed ring, the fixed ring is fixedly connected to the inner wall of the main shaft through a connecting rod, a sliding rod is arranged on the bearing, the limit rod passes through the fixed ring and is rotatably mounted on the sliding rod through a sleeve ring, and the two limit rods are crossed through the sliding rod.

[0020] Furthermore, a dehooking auxiliary rope is arranged on the bearing, and one end of the dehooking auxiliary rope away from the bearing extends to the outside of the main shaft.

[0021] Furthermore, a plurality of sliding rods are provided, and the plurality of sliding rods are located inside corresponding limiting grooves.

[0022] Furthermore, one end of the main shaft close to the shaft end base is threadedly connected to the shaft end base.

[0023] (III) Beneficial effects

[0024] The utility model provides an automatic packer for drilling underground water-sealed caverns. Compared with the prior art, it has the following beneficial effects:

[0025] The two limiting tongues contract and open under the action of the second tension spring to limit the sliding ring, thereby controlling the contraction and expansion of the rubber drum, thereby realizing the use of the rubber drum as a packer, solving the problem of multiple auxiliary pressurizing devices and pipelines required for mechanical plugs or hydraulic plugs in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A three-dimensional diagram of an automatic packer for drilling underground water-sealed caverns;

[0028] Figure 2 for Figure 1 Stereoscopic view after hiding the rubber drum;

[0029] Figure 3 for Figure 1A three-dimensional diagram of the adjustment mechanism inside the central spindle;

[0030] Figure 4 This is a schematic diagram of the structure of the adjusting mechanism installed in the main shaft.

[0031] Reference numerals:

[0032] 10. Main shaft; 101. Limiting groove; 11. Rubber drum; 111. Telescopic rope; 12. Sliding ring; 13. First tension spring; 131. Shaft end base; 20. Adjusting mechanism; 201. Unhooking auxiliary rope; 21. Fixing ring; 211. Connecting rod; 22. Limiting rod; 221. Limiting tongue; 222. Second tension spring; 23. Bearing; 231. Sliding rod; 232. Ring. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] The embodiment of the present application solves the problem of multiple auxiliary pressurizing devices and pipelines required for mechanical plugs or hydraulic plugs in the prior art by providing an automatic sealer for underground water-sealed cavern drilling, thereby facilitating the sealing operation of underground water-sealed cavern drilling.

[0035] The technical solution in the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0036] like Figure 1-Figure 4 As shown, the two limiting tongues contract and open under the action of the second tension spring to limit the sliding ring, thereby controlling the contraction and expansion of the rubber drum, thereby realizing the use of the rubber drum as a packer, solving the problem of multiple auxiliary pressurizing devices and pipelines required for mechanical plugs or hydraulic plugs in the prior art.

[0037] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] Example:

[0039] like Figure 1-Figure 2 As shown, an automatic packer for drilling underground water-sealed caverns comprises a main shaft 10, a rubber drum 11 and a shaft end base 131 located inside the rubber drum 11;

[0040] The main shaft 10 is hollow;

[0041] The rubber drum 11 is closed at the bottom and open at the top, and is fixed on the shaft end base 131;

[0042] The main shaft 10 is installed with the rubber drum 11 through the shaft end base 131;

[0043] The main shaft 10 is provided with a sliding ring 12 on the sliding sleeve;

[0044] The rubber drum 11 is connected to the outer side wall of the sliding ring 12 via a plurality of retractable ropes 111;

[0045] A plurality of first tension springs 13 are arranged between the sliding ring 12 and the shaft end base 131;

[0046] An adjusting mechanism 20 is installed inside the main shaft 10, and the adjusting mechanism 20 includes two limiting rods 22, and a second tension spring 222 is arranged between the two limiting rods 22;

[0047] The two limiting rods 22 are respectively provided with limiting tongues 221 on opposite sides thereof. The main shaft 10 is provided with at least two limiting grooves 101, and the limiting tongues 221 are located in the corresponding limiting grooves 101.

[0048] In the initial state, the limiting tongue 221 extends to the outside of the limiting groove 101 under the action of the second tension spring 222 .

[0049] When in use, the two limiting tongues 221 contract and open under the action of the second tension spring 222 to limit the sliding ring 12, thereby controlling the contraction and expansion of the rubber drum 11, thereby realizing the use of the rubber drum 11 as a packer.

[0050] During the construction period, when drilling in the water curtain tunnel above the main cavern or on the surface for construction monitoring, the borehole may penetrate the rock mass and enter the main cavern due to inaccurate control of borehole deflection, local rock crushing and other reasons. In order to ensure the airtightness of the cavern, the borehole needs to be grouting and sealed. Before grouting and sealing, a packer needs to be installed at the bottom of the hole. The present application sets a main shaft 10, a rubber drum 11 and an adjustment mechanism 20 to achieve simple operation of the packer during the water blocking process, without the need for other auxiliary pressurizing devices or pipeline connections, and utilizes the elasticity of the rubber drum 11 to achieve a close fit between the surface of the rubber drum 11 and the hole wall, thereby playing a role of temporary separation, and then grouting is performed in the hole to seal the borehole. In this way, the problem of being unable to seal due to leakage at the bottom of the borehole can be solved during grouting. At the same time, in the prior art, mechanical plugs or hydraulic plugs require many auxiliary pressurizing devices and pipelines.

[0051] Specifically, one end of the main shaft 10 close to the shaft end base 131 is threadedly connected to the shaft end base 131 .

[0052] like Figure 1-Figure 4 As shown, the adjustment mechanism 20 also includes a bearing 23 and a fixed ring 21. The fixed ring 21 is fixedly connected to the inner wall of the main shaft 10 through a connecting rod 211. A sliding rod 231 is arranged on the bearing 23. The limiting rod 22 passes through the fixed ring 21 and is rotatably mounted on the sliding rod 231 through a sleeve ring 232. The two limiting rods 22 are in a cross shape through the sliding rod 231.

[0053] By setting a fixed ring 21, a bearing 23, a sliding rod 231 and two limit rods 22 that are rotated and cross-set through a ring 232, it is easy to control the limit tongue 221, and then it is easy for the adjustment mechanism 20 to adjust the limit of the sliding ring 12, thereby realizing the contraction and bulging operation of the rubber drum 11.

[0054] The bearing 23 is provided with a dehooking auxiliary rope 201 , and one end of the dehooking auxiliary rope 201 away from the bearing 23 extends to the outside of the main shaft 10 .

[0055] By setting the unhooking auxiliary rope 201, the packer can be placed in holes of different depths, and the rubber drum 11 can be contracted by pulling the unhooking auxiliary rope 201, and then the packer can be taken out of the hole, which is convenient for the reuse of the packer.

[0056] There are multiple sliding rods 231, and the multiple sliding rods 231 are located inside the corresponding limiting grooves 101. When the unhooking auxiliary rope 201 is lifted to pull the bearing 23, the sliding rod 231 on the bearing 23 slides along the limiting groove 101, thereby improving the stability of the unhooking auxiliary rope 201 driving the bearing 23 to move.

[0057] During operation, in the initial state, the sliding ring 12 is located above the limiting tongue piece 221, and the limiting tongue piece 221 is used to limit the sliding ring 12. At this time, the first tension spring 13 is in a stretched state, and the stretched first tension spring 13 drives the rubber drum 11 to be in a contracted state;

[0058] Place the rubber drum 11 in the telescopic state into the corresponding hole that needs grouting, and then pull the unhooking auxiliary rope 201. Since the unhooking auxiliary rope 201 is fixedly connected to the bearing 23, the bearing 23 moves toward the direction of the unhooking auxiliary rope 201 under the action of the unhooking auxiliary rope 201. At this time, since the fixing ring 21 is fixedly connected to the main shaft 10, the two limiting rods 22 are squeezed inside the fixing ring 21 and under the action of the unhooking auxiliary rope 201, the limiting tongues 221 on the two limiting rods 22 approach each other and disengage from the limiting groove 101. At this time, the limiting tongues 221 no longer limit the sliding ring 12, the first tension spring 13 is reset, and the sliding ring 12 moves toward the shaft end base 131 under the action of the first tension spring 13, so as to realize the expansion of the rubber drum 11 and then seal the hole;

[0059] Similarly, when the rubber drum 11 is not in use for expansion, the control sliding ring 12 is moved upward to contract the rubber drum 11, and then the control sliding rod 231 is moved along the limiting groove 101 toward the direction of the shaft end base 131. The limiting rod 22 in the fixed ring 21 expands under the action of the second tension spring 222 until the limiting tongue 221 returns to its original position again and is located in the limiting groove 101, thereby realizing the limiting of the sliding ring 12 by the limiting tongue 221.

[0060] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0061] 1. The two limiting tongues 221 contract and open under the action of the second tension spring 222 to limit the sliding ring 12, thereby controlling the contraction and expansion of the rubber drum 11, thereby realizing the use of the rubber drum 11 as a packer, solving the problem of multiple auxiliary pressurizing devices and pipelines required for mechanical plugs or hydraulic plugs in the prior art.

[0062] 2. By setting a fixed ring 21, a bearing 23, a sliding rod 231 and two limit rods 22 that are rotated and cross-set through a sleeve ring 232, it is easy to control the limit tongue 221, and then it is easy for the adjustment mechanism 20 to adjust the limit of the sliding ring 12, thereby realizing the contraction and bulging operation of the rubber drum 11.

[0063] 3. By setting the unhooking auxiliary rope 201, the packer can be placed in holes of different depths. By pulling the unhooking auxiliary rope 201, the rubber drum 11 is contracted, and then the packer is taken out of the hole, which is convenient for the reuse of the packer.

[0064] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0065] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic packer for drilling underground water-sealed caverns, characterized in that: It comprises a main shaft (10), a rubber drum (11) and an axis end base (131) located inside the rubber drum (11); The main shaft (10) is hollow; The rubber drum (11) is closed at the bottom and open at the top, and is fixed on the shaft end base (131); The main shaft (10) is mounted on the rubber drum (11) via a shaft end base (131); The sliding sleeve on the main shaft (10) is provided with a sliding ring (12); The rubber drum (11) is connected to the outer side wall of the sliding ring (12) via a plurality of retractable ropes (111); A plurality of first tension springs (13) are arranged between the sliding ring (12) and the shaft end base (131); An adjusting mechanism (20) is installed inside the main shaft (10), and the adjusting mechanism (20) comprises two limiting rods (22), and a second tension spring (222) is arranged between the two limiting rods (22); A limiting tongue piece (221) is respectively arranged on the opposite sides of the two limiting rods (22); at least two limiting grooves (101) are arranged on the main shaft (10); and the limiting tongue piece (221) is located inside the corresponding limiting groove (101); In the initial state, the limiting tongue (221) extends to the outside of the limiting groove (101) under the action of the second tension spring (222).

2. The automatic packer for underground water-sealed cavern drilling according to claim 1, characterized in that: The adjusting mechanism (20) further comprises a bearing (23) and a fixing ring (21); the fixing ring (21) is fixedly connected to the inner wall of the main shaft (10) via a connecting rod (211); a sliding rod (231) is arranged on the bearing (23); the limiting rod (22) passes through the fixing ring (21) and is rotatably sleeved on the sliding rod (231) via a sleeve ring (232); and the two limiting rods (22) are arranged in a cross shape via the sliding rod (231).

3. The automatic packer for underground water-sealed cavern drilling according to claim 2, characterized in that: The bearing (23) is provided with a dehooking auxiliary rope (201), and one end of the dehooking auxiliary rope (201) away from the bearing (23) extends to the outside of the main shaft (10).

4. The automatic packer for underground water-sealed cavern drilling according to claim 3, characterized in that: A plurality of the sliding rods (231) are provided, and the plurality of sliding rods (231) are located inside corresponding limiting grooves (101).

5. The automatic packer for underground water-sealed cavern drilling according to claim 1, characterized in that: One end of the main shaft (10) close to the shaft end base (131) is threadedly connected to the shaft end base (131).

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