In-hole signal transmission device for mining central through cable directional drill rod

Abstract

The utility model relates to an in-hole signal transmission device for a mining central through cable directional drill rod. A partition plate is arranged in the mounting cavity, an insulating female joint is arranged in the mounting cavity, a mounting seat is arranged on the insulating female joint, a variable-diameter spring is further arranged on the mounting seat, a gland is arranged on a rear end cover of the detection shell, an insertion part is arranged on the gland, an upper gland is further tightly covered on the gland, and a Y-shaped gasket is arranged between the gland and the upper gland. A transmission line extending into the mounting cavity penetrates through the upper gland, the Y-shaped gasket and the gland, a metal screw is arranged on the inner side of the gland, a conductor is inserted into the insulating female joint, one end of the conductor is screwed with a compression nut, and the positive electrode and the negative electrode of the transmission line are respectively fixed on the compression nut and the metal screw. According to the utility model, the mounting cavity is subjected to waterproof sealing treatment, so that the underwater signal transmission cable can complete signal transmission underwater, the positive electrode and the negative electrode of the transmission line are fixed through the compression nuts and the metal screws, and the underwater signal transmission cable is convenient to disassemble and assemble.

Description

Technical Field

[0001] This utility model relates to a mining center cable directional drill rod, and more particularly to a signal transmission device inside the hole of a mining center cable directional drill rod. Background Technology

[0002] The mining center-cable directional drill pipe is a drilling device used in underground mines such as coal mines and metal mines. It is mainly used for directional drilling, gas drainage, and geological exploration. Its core feature is the center-cable design, which enables signal transmission and data acquisition, allowing real-time monitoring of key parameters during drilling, such as depth, angle, and azimuth. The mining center-cable directional drill pipe consists of: the drill pipe body, made of high-strength alloy steel, which is wear-resistant, corrosion-resistant, and impact-resistant, suitable for complex geological conditions; the center-cable, which integrates electrical or optical cables inside the drill pipe for transmitting electrical or optical signals, enabling two-way communication between the ground equipment and the drill bit; the signal transmission system, which transmits data collected by the drill bit sensors to the ground control system in real time via the center-cable; and the sensor module, installed at the front end of the drill bit or drill pipe, for collecting various parameters during the drilling process. The signal transmission system connects the center-cable and the terminal. Existing signal transmission systems are relatively simple and have exposed wiring connections that are susceptible to water ingress. Signal transmission can only be performed after water drainage is completed inside the borehole, which is very inconvenient. Summary of the Invention

[0003] This invention provides a signal transmission device for directional drill rods with central cable connection in mining, which solves the problem of communication failure due to water ingress at the connection points in existing technologies.

[0004] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: a signal transmission device for a directional drill rod hole for mining center cable connection, comprising a detection shell, a connector for docking with the drill rod at the front end of the detection shell, a recessed mounting cavity at the rear end of the detection shell, a partition separating the mounting cavity from the connector, an insertion hole on the partition, an insulating female connector in the mounting cavity, a mounting seat extending through the insertion hole into the connector on the insulating female connector, a variable diameter spring on the mounting seat, and a pressure seal for sealing the mounting cavity at the rear end of the detection shell. The cover has an insertion part on the pressure cover to tightly attach the insulating female connector to the partition plate. The pressure cover also has an upper pressure cover tightly covering it, and a Y-shaped washer is provided between the two. A transmission line extending into the mounting cavity passes through the upper pressure cover, the Y-shaped washer, and the pressure cover. A metal screw is provided on the inside of the pressure cover. The metal screw is conductive to the detection housing and the pressure cover. A conductor electrically connected to the variable diameter spring is inserted into the insulating female connector. One end of the conductor extends into the mounting cavity, and a clamping nut is screwed onto this part. The positive and negative poles of the transmission line are fixed to the clamping nut and the metal screw, respectively.

[0005] The connector in this invention is used for fixed connection with the end of the drill rod, and the variable diameter spring is used for electrical connection with the center cable on the drill rod. The detection shell, connector, and pressure cap are all made of metal and can form a conductive connection with the drill rod. The insulating female connector is used to protect the conductor and the variable diameter spring to prevent short circuit with the detection shell. In this invention, the mounting cavity is the exposed area of ​​the transmission line, and the positive and negative poles of the transmission line are fixed to the clamping nut and the metal screw, respectively. By waterproofing and sealing the mounting cavity, this invention can complete signal transmission underwater.

[0006] Furthermore, a first sealing ring is fitted onto the outer wall of the insertion part, which fits against the inner wall of the mounting cavity; two second sealing rings are fitted onto the outer wall of the insulating female connector. This ensures the sealing between the insertion part and the detection housing, and also ensures the sealing between the insulating female connector and the detection housing.

[0007] Therefore, this utility model has the following characteristics compared with the prior art: 1. By waterproofing and sealing the installation cavity, this utility model can complete signal transmission underwater, and the positive and negative poles of the transmission line are fixed by clamping nuts and metal screws, which has the effect of easy disassembly and assembly. Attached Figure Description

[0008] Appendix Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0009] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0010] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0011] Example 1: See Figure 1 A signal transmission device for a directional drill pipe with a central cable in mining includes a detection housing 10. The front end of the detection housing has a connector 11 that can be connected to the drill pipe. The rear end of the detection housing has a recessed mounting cavity 12. Inside the mounting cavity is a partition 13 separating it from the connector. The partition has a through hole. An insulating female connector 20 is located inside the mounting cavity. The insulating female connector has a mounting seat 21 that passes through the through hole and extends into the connector. The mounting seat also has a variable diameter spring 30. The rear end cover of the detection housing has a pressure cap 40 that seals the mounting cavity. The pressure cap has an insertion part 41 that tightly presses the insulating female connector against the partition. The pressure cap is also tightly covered by an upper pressure cap 50, and a Y-shaped washer 51 is provided between the two. A transmission line 60 extending into the mounting cavity runs through the upper pressure cap, the Y-shaped washer, and the pressure cap. The Y-shaped washer is characterized by its elastic deformation to the inside and outside when compressed, thereby squeezing the transmission line and improving the airtightness of the area. A metal screw 42 is provided inside the pressure cap. The metal screw is conductive to the detection housing and the pressure cap. A conductor 70 electrically connected to the reducing spring is inserted into the insulating female connector. One end of the conductor extends into the mounting cavity, and a clamping nut 71 is screwed onto this part. The positive and negative poles of the transmission line are fixed to the clamping nut and the metal screw, respectively.

[0012] In this embodiment, the connector is used for fixed connection with the end of the drill rod, the variable diameter spring is used for electrical connection with the center cable on the drill rod, the detection shell, connector, and gland are all made of metal and can form a conductive connection with the drill rod, and the insulating female connector is used to protect the conductor and the variable diameter spring to avoid short circuit with the detection shell. In this embodiment, the mounting cavity is the exposed area of ​​the transmission line, and the positive and negative poles of the transmission line are fixed to the clamping nut and the metal screw, respectively. This embodiment can complete signal transmission underwater by waterproof sealing the mounting cavity.

[0013] For details, see Figure 1A first sealing ring 1 is fitted on the outer wall of the insertion part to fit against the inner wall of the mounting cavity; two second sealing rings 2 are fitted on the outer wall of the insulating female connector. This ensures the sealing between the insertion part and the detection housing, and ensures the sealing between the insulating female connector and the detection housing.

[0014] For details, see Figure 1 The inner end of the mounting base is connected to a conductor connector 80, a variable diameter spring is fixed to the conductor connector, the conductor and the conductor connector are screwed together and fixed, and a third sealing ring 3 is fitted on the outer wall of the conductor connector.

[0015] For details, see Figure 1 The upper cover is also connected to a spring 90 that is sleeved on the outside of the transmission line. The function of the spring is to prevent the transmission line from being excessively bent and worn, thus providing protection.

[0016] This invention can be modified in many ways, as will be apparent to those skilled in the art, and such modifications are not considered to depart from the scope of this invention. All such modifications that are obvious to those skilled in the art are included within the scope of these claims.

Claims

1. A signal transmission device for a mine-use center-cable directional drill rod borehole, characterized in that: The device includes a detection housing. The front end of the detection housing has a connector that can mate with a drill pipe. The rear end of the detection housing has a recessed mounting cavity. Inside the mounting cavity is a partition separating it from the connector. The partition has a through hole. An insulating female connector is located inside the mounting cavity. The insulating female connector has a mounting seat that penetrates the through hole and extends into the connector. The mounting seat also has a reducing spring. The rear end cover of the detection housing has a pressure cap that seals the mounting cavity. The pressure cap has a mechanism that presses the insulating female connector tightly against the partition. The insertion part has an upper pressure cover tightly covering the pressure cover, and a Y-shaped washer is provided between the two. A transmission line extending into the mounting cavity passes through the upper pressure cover, the Y-shaped washer, and the pressure cover. A metal screw is provided inside the pressure cover. The metal screw is conductive to the detection housing and the pressure cover. A conductor electrically connected to the variable diameter spring is inserted into the insulating female connector. One end of the conductor extends into the mounting cavity, and a clamping nut is screwed onto this part. The positive and negative poles of the transmission line are fixed to the clamping nut and the metal screw, respectively.

2. The signal transmission device for mine center-guided directional drill pipe borehole as described in claim 1, characterized in that: The outer wall of the insertion part is fitted with a first sealing ring that fits against the inner wall of the mounting cavity; the outer wall of the insulating female connector is fitted with two second sealing rings.

3. The signal transmission device for mine center-guided directional drill pipe borehole as described in claim 1, characterized in that: A conductor connector is inserted into the inner end of the mounting base, the variable diameter spring is fixed to the conductor connector, the conductor is screwed to the conductor connector, and a third sealing ring is fitted on the outer wall of the conductor connector.

4. The signal transmission device for mine center-guided directional drill pipe borehole as described in claim 1, characterized in that: A spring is also connected to the upper cover and sleeved on the outside of the transmission line.

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