Underground coal mine wireless measurement-while-drilling probe orienting device

Abstract

The utility model provides an underground coal mine wireless measurement-while-drilling exploring tube orienting device which comprises a front connector, a rear connector and a fixing support. The front end and the rear end of the fixing support are provided with a front connector and a rear connector respectively, and the floating disc is welded to the outer side wall of the fixing support; an elastic piece is welded between the floating disc and the fixed bracket; a first pressing ring is fixedly installed in the rear connector. The interior of the rear connector is in threaded connection with a first insulating sleeve through a first pressing ring. The interior of the second insulating sleeve is in threaded connection with an aviation plug. A second pressing ring is fixedly installed in the front connector. The interior of the rear connector is in threaded connection with a second insulating sleeve through a second pressing ring. The interior of the second insulating sleeve is in threaded connection with an aviation socket. The aviation plug and the aviation socket are electrically connected through a wire.

Description

Technical Field

[0001] The utility model relates to the field of wireless measurement while drilling, in particular to a wireless measurement while drilling probe directional device for underground coal mines. Background Art

[0002] In my country's underground coal mine operations, in order to ensure efficient and safe work, we usually use crawler-type fully hydraulic directional drilling rigs and match them with a measurement while drilling system to achieve precise directional drilling. This technology can not only improve the efficiency of gas extraction, but also accurately detect and discharge moisture, effectively eliminating various potential risks underground in coal mines; especially when working in soft coal seams, we tend to choose gas as the medium, because gas can smoothly pass through the inner hole of the drill pipe from the orifice and directly drive the gas screw motor, thereby achieving precise drilling guidance;

[0003] However, working in this environment also faces some challenges. First, compared with liquid directional drilling, the vibration and impact generated by gas directional drilling are more intense. This strong vibration often causes the electromagnetic wave wireless measurement while drilling probe to loosen or even damage the instrument, causing considerable trouble to the construction progress.

[0004] Secondly, depending on the specific working conditions, we may need to use different fixing methods, such as lower seat key or upper seat key, to ensure that the electromagnetic wave or mud pulse wireless measurement while drilling probe can be stably installed in the non-magnetic drill pipe; but once the fixed seat key method is selected, it is difficult to adjust it, which limits the adaptability of the system to a certain extent;

[0005] Finally, working in narrow tunnels also brings certain operational difficulties. Since the electromagnetic wave or mud pulse wireless measurement while drilling probe is nearly 3 meters long, if it is installed in a non-magnetic drill pipe, it is not only inconvenient to use, but sometimes even cannot be used due to space constraints. Utility Model Content

[0006] In order to solve the problem that the vibration and impact of gas directional drilling are greater than those of liquid directional drilling in the prior art, and the general electromagnetic wave wireless drilling measurement probe often causes loose buckles, resulting in instrument damage and affecting the construction progress, the utility model provides a wireless drilling measurement probe directional device for underground coal mines;

[0007] The utility model provides a wireless measurement while drilling probe directional device for coal mines, which adopts the following technical solutions:

[0008] A wireless downhole measurement probe orientation device for coal mines, comprising a front joint, a rear joint, and a fixed bracket; the front joint and the rear joint are respectively installed on the front and rear ends of the fixed bracket, and is characterized in that a floating disk is welded to the outer wall of the fixed bracket; an elastic member is welded between the floating disk and the fixed bracket; a first pressure ring is fixedly installed inside the rear joint; a first insulating sleeve is threadedly connected to the inside of the rear joint through the first pressure ring; an aviation plug is threadedly connected to the inside of the second insulating sleeve; a second pressure ring is fixedly installed inside the front joint; a second insulating sleeve is threadedly connected to the inside of the rear joint through the second pressure ring; an aviation socket is threadedly connected to the inside of the second insulating sleeve; the aviation plug and the aviation socket are electrically connected via a wire.

[0009] Furthermore, the front joint and the rear joint are fixed to the front and rear ends of the fixing bracket by means of threaded connection, and are sealed and pressure-bearing with the fixing bracket by means of a rubber ring;

[0010] Furthermore, the outer side wall of the floating plate is provided with a directional key slot which matches the directional key in the non-magnetic drill rod;

[0011] Furthermore, the elastic member is a spring and is sleeved on the outer side wall of the fixed bracket;

[0012] Furthermore, the cross-sectional shape of the elastic member is one of a circle, an ellipse, a square and a rectangle;

[0013] Furthermore, the elastic member is made of an elastic material such as spring steel, stainless steel or beryllium copper.

[0014] In summary, the beneficial effects of the utility model are:

[0015] The utility model uses a connection method of a fixed bracket, a spring and a floating plate, so that most of the torsional and vibration energy in air drilling is absorbed by the spring, and the energy transmitted to the wireless drilling measurement probe is very small, which greatly improves the service life. The directional device adopts a flexible threaded connection and can be installed at the upper, middle and lower part of the drilling measurement probe according to actual working conditions, thereby solving the problem of inconvenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the overall structure of the fixing bracket of the utility model.

[0018] Figure 3 It is a schematic diagram of the overall structure of the floating plate of the utility model.

[0019] Figure 4The utility model is installed on the upper part of the electromagnetic wave wireless measurement while drilling probe connection diagram.

[0020] Figure 5 This is a schematic diagram of the connection of the utility model installed in the middle of an electromagnetic wave wireless measurement while drilling probe.

[0021] Figure 6 This is a schematic diagram of the connection of the utility model installed in the middle of an electromagnetic wave wireless measurement while drilling probe.

[0022] Figure 7 The utility model is installed at the lower part of the electromagnetic wave wireless measurement while drilling probe connection schematic diagram.

[0023] As shown in the figure: 1. rear joint; 2. fixed bracket; 3. spring; 4. floating plate; 4-1 directional keyway; 5. front joint; 6. aviation plug; 7. pressure ring; 8. insulating sleeve; 9. O-ring; 10. aviation socket; 11. directional device; 12. conversion short section; 13. launching short section; 14. battery short section; 15. directional short section; 16. protective cap; 17. rubber centralizer. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-7 The utility model is further described in detail:

[0025] The utility model provides a wireless drilling measurement probe directional device for underground coal mines. Figure 1 As shown, it includes a rear joint 1, a fixed bracket 2, a spring 3, a floating disk 4, a front joint 5, an aviation plug 6, a pressure ring 7, an insulating sleeve 8, an O-ring 9 and an aviation socket 10, characterized in that the fixed bracket 2, the spring 3 and the floating disk 4 are arranged in sequence and formed into one body by welding, the rear joint 1 is connected to one end of the fixed bracket 2 by a thread, and a sealing and pressure-bearing effect is achieved through an O-ring 9, the other end of the fixed bracket 2 is connected to the front joint 5 by a thread, and a sealing and pressure-bearing effect is achieved through an O-ring 9, a first insulating sleeve 81 is installed inside the rear joint 1, and is threadedly connected and fixed to the fixed bracket 2 by a first pressure ring 71, the aviation plug 6 is threadedly connected to the inner hole of the first insulating sleeve 81, a second insulating sleeve 82 is installed inside the front joint 5, and is threadedly connected and fixed to the fixed bracket 2 by a second pressure ring 72, the aviation socket 10 is threadedly connected to the inner hole of the second insulating sleeve 82, and a wire is connected between the aviation plug 6 and the aviation socket 10 to achieve electrical connection.

[0026] according to Figures 4 to 7As shown, a coal mine underground wireless measurement while drilling probe tube orientation device can be installed in the front, middle or rear of the wireless measurement while drilling probe tube. The electromagnetic wave wireless measurement while drilling probe tube is taken as an example for introduction. When the orientation device is installed in the front of the electromagnetic wave wireless measurement while drilling, the conversion short section 12, the orientation device 11, the transmitting short section 13, the battery short section 14, the orientation short section 15 and the protective cap 16 are connected in sequence through threads, and the internal electrical connection is realized at the same time. A centralizer 17 is installed on each of the transmitting short section, the battery short section and the orientation short section; when the orientation device is installed in the middle of the electromagnetic wave wireless measurement while drilling, the conversion short section 12, the transmitting short section 13, the orientation device 11, the battery short section 14, the orientation short section 15 and the protective cap 16 are connected in sequence through threads, and the internal electrical connection is realized at the same time. 5 and the protective cap 16 are connected by threads in sequence, and an electrical connection is realized internally, or the conversion short section 12, the transmitting short section 13, the battery short section 14, the directional device 11, the directional short section 15 and the protective cap 16 are connected by threads in sequence, and an electrical connection is realized internally, and a centralizer 17 is installed on each of the transmitting short section, the battery short section and the directional short section; when the directional device is installed at the lower part of the electromagnetic wave wireless measurement while drilling, the conversion short section 12, the transmitting short section 13, the battery short section 14, the directional short section 15, the directional device 11 and the protective cap 16 are connected by threads in sequence, and an electrical connection is realized internally, and a centralizer 17 is installed on each of the transmitting short section, the battery short section and the directional short section.

[0027] The directional key slot 4-1 cooperates with the directional key installed in the non-magnetic drill rod. During use, the vibration and torque on the non-magnetic drill rod act on the floating plate of the directional device, and most of the energy is absorbed by the spring.

[0028] There are three annular grooves on the fixed bracket 2 and the floating plate 4, and a U-shaped keyway is provided on the floating plate.

[0029] The cross-sectional shape of the elastic member 3 can be circular, oval, square or rectangular, and the material can be elastic materials such as spring steel, stainless steel or beryllium copper.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The various components mentioned in the utility model are common technologies in the existing field. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A wireless measurement while drilling probe directional device for underground coal mines, characterized in that It includes a front joint, a rear joint and a fixed bracket; the front and rear ends of the fixed bracket are respectively installed with the front joint and the rear joint; the outer wall of the fixed bracket is welded with a floating plate; an elastic part is welded between the floating plate and the fixed bracket; a first pressure ring is fixedly installed inside the rear joint; the interior of the rear joint is threadedly connected with a first insulating sleeve through the first pressure ring; the interior of the first insulating sleeve is threadedly connected with an aviation plug; a second pressure ring is fixedly installed inside the front joint; the interior of the rear joint is threadedly connected with a second insulating sleeve through the second pressure ring; the interior of the second insulating sleeve is threadedly connected with an aviation socket; the aviation plug and the aviation socket are electrically connected through a wire.

2. A wireless measurement while drilling probe orientation device for underground coal mines according to claim 1, characterized in that The front joint and the rear joint are fixed to the front and rear ends of the fixing bracket by means of threaded connection, and are sealed and pressure-bearing with the fixing bracket by means of a rubber ring.

3. A wireless measurement while drilling probe orientation device for underground coal mines according to claim 1, characterized in that The outer side wall of the floating plate is provided with a directional key slot which matches with the directional key in the non-magnetic drill rod.

4. A wireless measurement while drilling probe orientation device for underground coal mines according to claim 1, characterized in that The elastic member is a spring and is sleeved on the outer side wall of the fixing bracket.

5. A wireless measurement while drilling probe orientation device for underground coal mines according to claim 4, characterized in that The cross-sectional shape of the elastic member is one of a circle, an ellipse, a square and a rectangle.

6. A wireless measurement while drilling probe orientation device for underground coal mines according to claim 4, characterized in that The elastic member is made of spring steel, stainless steel or beryllium copper.

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