Drill rod sealing structure for coal seam drilling

Abstract

The utility model relates to a sealing structure, and particularly discloses a drill rod sealing structure for coal seam drilling, which comprises a sleeve, a bearing arranged on the inner wall of the sleeve, a sealing ring arranged on the inner wall of an inner ring of the bearing, a sealing ring arranged on the inner wall of the sealing ring, and a drill rod arranged in the sealing ring. The drill rod sealing structure for coal seam drilling can effectively seal the drill rod in a drilled hole.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sealing structure, specifically, relate to a coal seam drilling is with the drill pipe sealing structure. BACKGROUND

[0002] Coal seam drilling refers to drilling in coal seam relevant position, through drilling to pass through the gas extraction channel of gas, and then through drilling to extract gas, usually adopts the drill pipe and drilling rig to carry out drilling operation.

[0003] In the drilling process, the drilling needs to be effectively sealed to avoid gas leakage from the drilling, and the sealing mainly includes the inner wall sealing of the drilling and the drill pipe sealing. Among them, the drill pipe sealing mainly uses sealing bearings, sealing rings and the like to seal, but the sealing effect of this kind of way is poor, mainly because the drill pipe itself is in high-speed rotation process, and also produces certain vibration, thus causing certain damage to the bearing and other sealing structures, and therefore a more efficient drill pipe sealing structure needs to be designed. UTILITY MODEL CONTENTS

[0004] The utility model discloses a coal seam drilling is with the drill pipe sealing structure, which can effectively seal the drill pipe in the drilling.

[0005] The utility model discloses a coal seam drilling is with the drill pipe sealing structure, which can effectively seal the drill pipe in the drilling.

[0006] Further, the sealing ring inner wall is provided with annular clamping grooves, and the sealing ring is clamped in the clamping grooves.

[0007] Further, the clamping grooves are provided with a plurality of clamping grooves, and the plurality of clamping grooves are distributed along the axial direction of the sealing ring.

[0008] Further, the sealing ring and the bearing inner ring are fixedly connected through an adhesive, and the sleeve inner wall and the bearing outer ring are fixedly connected through an adhesive.

[0009] Further, the bearing is a sealed bearing.

[0010] The technical solution of this utility model has at least the following advantages and beneficial effects: The drill rod sealing structure for coal seam drilling of this utility model seals the drill rod during drilling through a casing, bearing, sealing ring, and sealing ring, ensuring a good sealing effect during rotation and axial movement. Gases such as methane discharged from the borehole will not leak from the drill rod. Furthermore, the casing, bearing, and other structures effectively support the drill rod during operation. The sealing ring also effectively reduces the damage to the bearings caused by drill rod vibration through buffering. Attached Figure Description

[0011] Figure 1 A schematic diagram of the sealing structure for a drill rod used in coal seam drilling provided in an embodiment of this utility model.

[0012] Icons: 1-Casing, 2-Bearing, 3-Sealing ring, 4-Slot, 5-Sealing ring, 6-Drill pipe. Detailed Implementation

[0013] Example

[0014] The following description, in conjunction with specific embodiments, further illustrates the points, as shown in the appendix. Figure 1 As shown, the sealing structure of the drill rod 6 for coal seam drilling in this embodiment includes a casing 1, a bearing 2 disposed on the inner wall of the casing 1, a sealing ring 3 disposed on the inner wall of the inner ring of the bearing 2, a sealing ring 5 disposed on the inner wall of the sealing ring 3, and the drill rod 6 disposed within the sealing ring 5. Specifically, during the drilling process, the drill rod 6 is sealed by the casing 1, bearing 2, sealing ring 3, and sealing ring 5, so that the drill rod 6 can maintain a good sealing effect during rotation and axial movement. Gases such as methane discharged in the borehole will not leak from the drill rod 6. Furthermore, the casing 1, bearing 2, and other structures can effectively support the drill rod 6 during operation. Moreover, the sealing ring 5 effectively reduces the damage to the bearing 2 caused by the vibration of the drill rod 6.

[0015] In this embodiment, the inner wall of the sealing ring 3 is provided with an annular groove 4, and the sealing ring 5 is engaged in the groove 4. Specifically, this can better fix the sealing ring 5 and prevent it from falling off.

[0016] In this embodiment, multiple slots 4 are provided, distributed along the axial direction of the sealing ring 3, and each slot 4 is provided with a sealing ring 5. Specifically, by providing multiple sealing rings 5, the sealing effect can be better improved.

[0017] In this embodiment, the sealing ring 3 is fixedly connected to the inner ring of the bearing 2 by an adhesive; the inner wall of the sleeve 1 is fixedly connected to the outer ring of the bearing 2 by an adhesive. Specifically, this not only facilitates assembly but also provides a certain sealing effect through the adhesive.

[0018] The bearing 2 in the embodiment is a sealed bearing 2.

[0019] In summary, the drill pipe 6 sealing structure for coal seam drilling in the embodiment can seal the drill pipe 6 through the casing 1, the bearing 2, the sealing ring 3 and the sealing ring 5 during the drilling process of the drill pipe 6, so that the drill pipe 6 can maintain good sealing effect during rotation and axial movement, and the gas such as gas discharged in the drilling process cannot leak from the drill pipe 6, and the casing 1, the bearing 2 and other structures can effectively support the drill pipe 6 during the operation of the drill pipe 6. And through the buffering of the sealing ring 5, the damage of the drill pipe 6 to the bearing 2 caused by vibration can be well reduced.

[0020] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sealing structure for a drill rod used in coal seam drilling, characterized in that: It includes a casing, a bearing disposed on the inner wall of the casing, a sealing ring disposed on the inner wall of the inner ring of the bearing, a sealing ring disposed on the inner wall of the sealing ring, and a drill rod disposed within the sealing ring.

2. The sealing structure for drill rods used in coal seam drilling according to claim 1, characterized in that: The inner wall of the sealing ring is provided with an annular groove, and the sealing ring is engaged in the groove.

3. The sealing structure for drill rods used in coal seam drilling according to claim 2, characterized in that: The card slots are provided in multiple ways, and the multiple card slots are distributed along the axial direction of the sealing ring, and each card slot is provided with the sealing ring.

4. The sealing structure for drill rods used in coal seam drilling according to claim 1, characterized in that: The sealing ring is fixedly connected to the inner ring of the bearing by an adhesive; the inner wall of the sleeve is fixedly connected to the outer ring of the bearing by an adhesive.

5. The sealing structure for drill rods used in coal seam drilling according to claim 1, characterized in that: The bearing is a sealed bearing.

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