Measurement-while-drilling joint and measurement equipment

Abstract

The utility model discloses a measurement-while-drilling joint and measurement equipment. The measurement-while-drilling connector comprises a pipe body, wherein the pipe body comprises a first end used for being connected with a cable and a second end arranged opposite to the first end; the connecting joint is detachably connected to the second end and is provided with a first connecting part which is detachably connected with a drill rod; the connecting joint is arranged in the pipe body, the signal transmission assembly is arranged in the pipe body and the connecting joint and used for being in telecommunication connection with the drill rod and the cable, and the insulating joint is arranged between the connecting joint and the signal transmission assembly so as to electrically isolate the connecting joint from the signal transmission assembly. Compared with the prior art, the measurement-while-drilling connector can be stably connected to the tail end of a drill rod, workers can conveniently use the measurement-while-drilling connector, signal data transmission stability is improved, the measurement-while-drilling connector can be matched with different drill rods, and adaptability of the measurement-while-drilling connector and the drill rod is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of cable-through survey joint, especially relates to a mine adaptation type's while drilling survey joint and measuring equipment. BACKGROUND

[0002] With the continuous deepening of coal mining activities, the geological conditions become more and more complex, which puts forward higher requirements for the safety production of coal mine. Under this background, directional drilling equipment has been widely popularized and applied in China due to its key role in coal mine disaster control. In the process of directional drilling, the cable-through mine while drilling measurement equipment plays the role of "eyes" and is one of the indispensable core instruments.

[0003] In the traditional operation process, the while drilling measurement data of the probe tube is transmitted to the mine explosion-proof and intrinsic safety type computer through the cable-through drill rod and measurement data line. The terminals of the measurement data line are usually clamped by red and black clips to realize the measurement operation of the while drilling signal. However, the harsh environment of the coal mine and the frequent clamping operation cause the red and black clips to be easily damaged, thereby causing communication interruption failure. In addition, the use of red and black clips also brings additional safety risks to the underground operation environment during the measurement operation. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model provides a while drilling measurement joint with stable connection and high adaptability.

[0005] The technical scheme of the utility model is:

[0006] A while drilling measurement joint, comprising:

[0007] A pipe body comprising a first end for connecting a cable and a second end arranged opposite to the first end;

[0008] A connecting joint detachably connected to the second end and having a first connecting part detachably connected to a drill rod;

[0009] A signal transmission assembly arranged in the pipe body and the connecting joint for electrically connecting the drill rod and the cable,

[0010] An insulating joint arranged between the connecting joint and the signal transmission assembly to electrically isolate the connecting joint and the signal transmission assembly.

[0011] Further, the connecting joint comprises a base and an extension wall extending away from the base, and the extension wall surrounds to form a receiving part accommodating the insulating joint and the signal transmission assembly.

[0012] Further, the first connecting part is arranged on the extension wall, and the extension wall is provided with a plurality of notches away from one side of the base.

[0013] Further, the base is provided with a second connecting part for detachable connection with the pipe body, and a first through hole for communication between the pipe body and the receiving part.

[0014] Further, the insulating joint is detachably connected with the pipe body at least partially through the first through hole.

[0015] Further, the insulating joint comprises a containing part for containing part of the signal transmission assembly and a limiting boss for limiting connection with the base.

[0016] Further, the signal transmission assembly comprises a cable connector, an electrical connecting piece and a connecting terminal connected in sequence, the cable connector is arranged in the insulating joint, the connecting terminal is arranged in the pipe body, and the electrical connecting piece electrically connects the cable connector and the connecting terminal.

[0017] Further, the first end is provided with a cable fixing part, the bottom of the cable fixing part is provided with a second through hole, and the cable passes through the second through hole and is electrically connected with the connecting terminal.

[0018] Further, the pipe body and the insulating joint are sealingly connected, and the pipe body is provided with a plurality of wrench positions.

[0019] The utility model further provides a kind of measuring equipment, which comprises cable, connecting plug and above-mentioned while drilling measurement joint, one end of the cable is electrically connected with the first end of the while drilling measurement joint, and the other end is electrically connected with the connecting plug.

[0020] The utility model has the beneficial technical effects that:

[0021] The utility model provides a kind of while drilling measurement joint, by being provided with first connecting part on connecting joint to connect drill rod, improve the connection stability of while drilling measurement joint and drill rod, by being arranged in connecting joint with signal transmission assembly, to realize monitoring data at any time and adjust drilling direction according to the real-time data of drill rod, without worrying about measurement red and black clipper line drop even short circuit accident when rotating drilling tool, improve safety. By being provided with detachable connection with drill rod on connecting joint, and, detachable connection with pipe body, so different connecting joints can be adapted according to different drill rods, improve the versatility of while drilling measurement joint itself and the adaptability with drill rod. By being provided with insulating joint between connecting joint and signal transmission assembly, to electrically isolate internal and external signal, improve the stability of signal transmission and signal quality. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of a measuring device according to the preferred embodiment of the present application;

[0023] Figure 2 is Figure 1 is a structural explosion view of a measurement-while-drilling joint in the present application;

[0024] Figure 3 is Figure 1 is a sectional view of the present application;

[0025] Figure 4 is Figure 2 is a structural schematic view of a connecting joint in the present application;

[0026] Figure 5 is Figure 2 is a structural schematic view of an insulating joint in the present application;

[0027] Figure 6 is a structural schematic view of an insulating joint in another embodiment. BRIEF DESCRIPTION OF DRAWINGS

[0029] The measurement-while-drilling joint 100, the pipe body 10, the first end 11, the second end 12, the handle rod 13, the handle sleeve 14, the wrench position 15, the connecting joint 20, the base 21, the first through hole 211, the extension wall 22, the first connecting part 221, the notch 222, the receiving part 223, the signal transmission assembly 30, the cable joint 31, the electrical connecting piece 32, the metal rod 321, the pin 322, the connecting terminal 33, the base 34, the insulating joint 40, the accommodating part 41, the limiting boss 42, the receiving hole 43, the cable fixing piece 50, the second through hole 51, the fixing nut 60, the cable 200, the connecting plug 300, the measuring device 400. DETAILED DESCRIPTION

[0030] In order to make the technical means of the present application more clearly understood, and can be implemented according to the content of the specification, the specific embodiments of the present application are further described in detail below, the following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0031] Please refer to Figures 1 to 5The utility model provides a kind of measuring equipment 400, applied to mining detection.The measuring equipment 400 includes cable 200, connecting plug 300 and while drilling measurement joint 100.The second end 12 of while drilling measurement joint 100 is connected with drill rod, and the first end 11 is connected with cable 200.And the first end 11 of the one end of the cable 200 with while drilling measurement joint 100 is electrically connected, and the other end is electrically connected with the connecting plug 300.So, the information of drill rod, for example, the relative position of drill rod, drill rod magnetic declination, drill rod azimuth angle etc.

[0032] Please continue to see Figures 1 to 3 The utility model provides a kind of measuring equipment 400, applied to mining detection.The measuring equipment 400 includes cable 200, connecting plug 300 and while drilling measurement joint 100.The second end 12 of while drilling measurement joint 100 is connected with drill rod, and the first end 11 is connected with cable 200.And the first end 11 of the one end of the cable 200 with while drilling measurement joint 100 is electrically connected, and the other end is electrically connected with the connecting plug 300.So, the information of drill rod, for example, the relative position of drill rod, drill rod magnetic declination, drill rod azimuth angle etc.

[0033] The connecting joint 20 is used for detachably connecting the MWD joint 100 to the tail of the drill pipe. Optionally, the connecting joint 20 is a metal joint, which comprises a base 21 and an extension wall 22 extending away from the base 21. The base 21 is used for detachably connecting with the pipe body 10 and is provided with a second connecting part for detachably connecting with the pipe body 10. The extension wall 22 is used for detachably connecting with the drill pipe and is provided with a first connecting part 221 for detachably connecting with the drill pipe. In this way, different connecting joints 20 can be adapted according to different drill pipes, thereby improving the universality of the MWD joint 100 itself and the adaptability with the drill pipe.

[0034] Further, the first connecting part 221 is arranged on the extension wall 22 to realize detachable connection with the drill pipe through the first connecting part 221. Optionally, in the embodiment, the first connecting part 221 is an external thread arranged on the extension wall 22 close to the base 21, and the external thread is used to realize threaded connection with the drill pipe. In other embodiments, the first connecting part 221 can also be other connecting structures which can be detachably connected and adapted with the drill pipe.

[0035] The extension wall 22 is provided with a plurality of notches 222 on the side away from the base 21. Optionally, in the embodiment, four rectangular windows are arranged. The plurality of notches 222 are arranged to realize weight reduction of the connecting joint 20 and to realize the purpose of drainage. In other embodiments, the number and shape of the notches 222 can be designed according to requirements.

[0036] In addition, due to the plurality of notches 222 arranged on the extension wall 22, the extension wall 22 is slightly longer, and the extended extension wall 22 improves the connection stability of the MWD joint 100 with the drill pipe.

[0037] Further, the extension wall 22 is arranged to form a receiving part 223 for accommodating the insulating joint 40 and the signal transmission assembly 30. The base 21 is provided with a first through hole 211 for communicating the pipe body 10 and the receiving part 223. The signal transmission assembly 30 and the insulating joint 40 can be accommodated in the receiving part 223, so as to avoid falling of the signal transmission assembly 30 and improve the transmission quality affected by pollution of the signal transmission assembly 30. The insulating joint 40 and the signal transmission assembly 30 can pass through the first through hole 211 to realize connection with the pipe body 10.

[0038] Further, the base 21 is provided with a second connecting part for detachably connecting with the pipe body 10. The second connecting part is an internal thread arranged inside the first through hole 211, and the pipe body 10 is provided with an external thread for threaded connection with the internal thread.

[0039] The insulating joint 40 is arranged in the interior of the connecting joint 20 and comprises a first part arranged in the accommodating portion 223 and a second part arranged in the pipe body 10. The insulating joint 40 is arranged to realize electrical isolation between the metal joint and the signal transmission assembly 30, thereby improving the stability of signal transmission and signal quality.

[0040] Optionally, in the embodiment, the insulating joint 40 is a plastic joint, which realizes insulation and weight reduction of the MWD joint 100.

[0041] Further, the first part of the insulating joint 40 is provided with a receiving portion 41 for accommodating the signal transmission assembly 30 in the accommodating portion 223. The cable joint 31 in the signal transmission assembly 30 is arranged in the receiving portion 41.

[0042] Further, a limiting boss 42 is arranged at one end of the first part towards the second part. The diameter of the limiting boss 42 is greater than the diameter of the first through hole 211, so as to be clamped to the base 21. The limiting boss 42 is arranged to improve the stability of the electrical connection between the signal transmission assembly 30 and the drill pipe, and prevent the first part from falling into the pipe body 10 through the first through hole 211.

[0043] The second part of the insulating joint 40 is detachably connected with the pipe body 10 through the first through hole 211. Preferably, the second part is provided with external threads for screwing with the pipe body 10, and the pipe body 10 is provided with internal threads corresponding to the external threads. In this way, the connection between the insulating joint 40 and the pipe body 10 is facilitated, and the insulating joint 40 is also convenient to replace.

[0044] Further, a sealing ring is arranged between the second part and the inner wall of the pipe body 10, so as to seal the insulating joint 40 and the pipe body 10.

[0045] It should be noted that, in the embodiment, the insulating joint 40 is a male joint, as shown in Figure 5 In other embodiments, for example, as shown in Figure 6 , the insulating joint 40 can be a female joint. The insulating joint 40 is provided with a receiving hole 43 for receiving a male terminal of the drill pipe. The male terminal is inserted into the receiving hole 43 and electrically connected with the cable joint 31 in the receiving portion 41 of the insulating joint 40. That is, the insulating joint 40 of the utility model can be adapted according to different directional cable drill pipe ports, thereby improving the adaptability of the MWD joint 100.

[0046] The signal transmission assembly 30 comprises a cable connector 31, an electrical connecting member 32 and a connecting terminal 33 connected in sequence. The cable connector 31 is arranged in the accommodating portion 41 of the insulating connector 40 and is electrically connected with the drill rod. The connecting terminal 33 is arranged on the base 34 which is arranged in the pipe body 10 and is electrically connected with the cable 200. The electrical connecting member 32 is arranged between the cable connector 31 and the connecting terminal 33 and electrically connects the cable connector 31 and the connecting terminal 33.

[0047] Optionally, the electrical connecting member 32 comprises a metal rod 321 and a pin 322. The two ends of the metal rod 321 are provided with threads, one end of which is threadedly connected with the cable connector 31 and the other end is inserted into the inner hole of the pin 322. The pin 322 is arranged in the pipe body 10 and is electrically connected with the connecting terminal 33.

[0048] In the embodiment, the pipe body 10 comprises a handle rod 13 and a handle sleeve 14. The handle rod 13 and the handle sleeve 14 are threadedly connected and can be detached. In the embodiment, the pipe body 10 can also be a one-piece connector or other split structure, which is not limited in the utility model.

[0049] Further, the outer walls of the two ends of the handle rod 13 are threadedly connected with the connecting connector 20 and the handle sleeve 14 respectively. The inner wall of the handle rod 13 is threadedly connected with the insulating connector 40.

[0050] One end of the handle sleeve 14 is threadedly connected with the handle rod 13 and the other end is threadedly connected with the cable fixing member 50.

[0051] Further, the pipe body 10 comprises a first end 11 for connecting the cable 200 and a second end 12 arranged opposite to the first end 11. The second end 12 is inserted into the first through hole 211 to achieve the thread connection with the connecting connector 20 and the sealing connection with the insulating connector 40. The first end 11 is provided with the cable fixing member 50. The bottom of the cable fixing member 50 is provided with a second through hole 51. The cable 200 passes through the second through hole 51 and is electrically connected with the connecting terminal 33.

[0052] The cable fixing member 50 is provided with an inner hole. The base 34 provided with the connecting terminal 33 is threadedly connected with the inner hole. Preferably, the inner hole is a stepped hole to improve the connection stability.

[0053] The second through hole 51 of the cable fixing member 50 is a tapered hole. The cable fixing member 50 is further provided with a fixing nut 60 below. The tapered rubber plug is fixed in the second through hole 51 through the second through hole 51 and the inner bottom of the fixing nut 60 to fix the cable 200 through the tapered rubber plug.

[0054] Further, the handle rod 13, the handle sleeve 14 and the cable fixing part 50 adopt a uniform outer diameter to compress the length of the pipe body 10 to the greatest extent, and the three parts jointly play a role of hand holding, reduce unnecessary parts, improve hand holding comfort and reduce the weight of the whole.

[0055] Further, the pipe body 10 is provided with a plurality of wrench positions 15, that is, a plurality of cut surfaces are arranged on the outer circumferential side of the pipe body 10. Through the arrangement of the cut surfaces, the assembly of the installation personnel is facilitated, and at the same time, the weight of the measurement joint 100 is reduced.

[0056] Further, the measurement joint 100 of the utility model is coaxially installed when installed, so as to improve the connection stability.

[0057] The measurement joint 100 of the utility model is detachably connected to the drill rod end of the directional cable through the connecting joint 20 when working, the signal of the drill rod is transmitted to the cable 200 through the signal transmission assembly 30, and finally transmitted to the mine explosion-proof and intrinsic safety type computer end through the connector plug. When different models of directional cable drill rods need to be matched, only the connecting joint 20 part needs to be replaced to adapt to the measurement requirements of different directional cable drill rods. In addition, the insulation joint 40 is also adapted according to different directional cable drill rod ports. According to different directional cable drill rod end portions, workers only need to replace the connecting joint 20 or the insulation joint 40 of the measurement joint 100 to easily realize the use of one measurement joint 100 in multiple places, greatly improve the adaptability of the measurement joint 100, and more convenient, fast and efficient. In addition, the connection structure of the measurement joint 100 of the utility model is simple and convenient, and it is also convenient for maintenance, effectively improves the service life and use performance of the product. At the same time, the measurement joint 100 replaces the red and black clamp for detection, so that the whole operation process is more standardized and safe, and the data can be monitored at any time, which is convenient for workers to make corresponding adjustment, adjusts the directional cable drill rod according to the real-time data, is convenient to use, and improves the work efficiency.

[0058] In summary, the utility model provides a kind of measurement joint 100 with while drilling and measuring equipment 400, by being set up first connecting portion 221 to connect drill pipe on connecting joint 20, improve the connection stability of measurement joint 100 with while drilling and drill pipe, by signal transmission component 30 is set in connecting joint 20, to realize monitoring data at any time and according to the real-time data of drill pipe adjustment drilling direction, without worrying about the measurement red and black clip wire drop even short-circuit accident when rotating drilling tool, improve safety.Through being set up on connecting joint 20 with drill pipe detachable connection, and, with pipe body 10 detachable connection, so it can be according to different drill pipe adaptation different connecting joint 20, improve the versatility of measurement joint 100 with while drilling and the adaptability of drill pipe.Through the insulating joint 40 between connecting joint 20 and signal transmission component 30, to electrically isolate the signal inside and outside, improve the stability of signal transmission and signal quality.

[0059] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, it should be pointed out, for ordinary skilled person in the prior art, without departing from the technical principle of the utility model, can also make a number of improvements and variations, these improvements and variations also should be regarded as the protection scope of the utility model.

Claims

1. A measurement-while-drilling sub, characterized by, The application relates to a drilling-while-measuring joint. The drilling-while-measuring joint comprises a pipe body (10), a connecting joint (20), a signal transmission assembly (30) and an insulation joint (40). The pipe body (10) comprises a first end (11) for connecting a cable (200) and a second end (12) arranged opposite to the first end (11). The connecting joint (20) is detachably connected to the second end (12) and has a first connecting part (221) detachably connected to a drill rod. The signal transmission assembly (30) is arranged in the pipe body (10) and the connecting joint (20) and is used for electrically connecting the drill rod and the cable (200).

2. The measurement-while-drilling junction of claim 1, wherein, The insulation joint (40) is arranged between the connecting joint (20) and the signal transmission assembly (30) and is used for electrically isolating the connecting joint (20) and the signal transmission assembly (30).

3. The measurement-while-drilling junction of claim 2, wherein, The connecting joint (20) comprises a base (21) and an extension wall (22) extending away from the base (21), and the extension wall (22) surrounds a receiving part (223) for accommodating the insulation joint (40) and the signal transmission assembly (30).

4. The measurement-while-drilling junction of claim 2, wherein, The first connecting part (221) is arranged on the extension wall (22), and the extension wall (22) is provided with a plurality of notches (222) away from the base (21).

5. The measurement-while-drilling junction of claim 4, wherein, The base (21) is provided with a second connecting part for detachably connecting the pipe body (10) and a first through hole (211) for connecting the pipe body (10) and the receiving part (223).

6. The measurement-while-drilling junction of claim 2, wherein, The insulation joint (40) is detachably connected to the pipe body (10) at least partially through the first through hole (211).

7. The measurement-while-drilling junction of claim 1, wherein, The insulation joint (40) comprises a receiving part (41) for accommodating the signal transmission assembly (30) and a limiting boss (42) for limiting connection with the base (21).

8. The measurement-while-drilling junction of claim 7, wherein, The signal transmission assembly (30) comprises a cable connector (31), an electrical connecting part (32) and a connecting terminal (33) which are electrically connected in sequence, the cable connector (31) is arranged in the insulation joint (40), the connecting terminal (33) is arranged in the pipe body (10), and the electrical connecting part (32) electrically connects the cable connector (31) and the connecting terminal (33).

9. The measurement-while-drilling junction of claim 1, wherein, The first end (11) is provided with a cable fixing part (50), the bottom of the cable fixing part (50) is provided with a second through hole (51), the cable (200) passes through the second through hole (51) and is electrically connected to the connecting terminal (33).

10. A measuring device, characterized by The pipe body (10) and the insulation joint (40) are sealingly connected, and the pipe body (10) is provided with a plurality of wrench positions (15). The application further relates to a cable (200), a connecting plug (300) and the drilling-while-measuring joint, one end of the cable (200) is electrically connected to the first end (11) of the drilling-while-measuring joint, and the other end is electrically connected to the connecting plug (300).

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