Flexible drill rod of high-pressure abrasive drill carriage

Abstract

The utility model discloses a high-pressure abrasive drill carriage flexible drill rod which comprises a high-pressure flexible pipe and a connector, one end of the high-pressure flexible pipe is connected with the connector, the other end of the high-pressure flexible pipe is connected with a drill carriage, the high-pressure flexible pipe is a pressure-resistant rubber pipe, and a protective sleeve is arranged outside the high-pressure flexible pipe. A driving nozzle water supply channel, a jet flow nozzle water supply channel and a cavity area are arranged in the connector, a bearing installation area I, a driving nozzle water supply groove, a jet flow cutting nozzle water supply groove and a bearing installation area II are arranged in the cavity area, and the driving nozzle water supply channel is communicated with the driving nozzle water supply groove. The jet flow nozzle water supply channel is communicated with the jet flow cutting nozzle water supply groove, and the two bearing areas are used for installing bearings. The flexible drill rod can be bent and is good in toughness, the length of the flexible drill rod can be freely selected, the drill rod does not need to be frequently replaced, operation is convenient in the drilling construction process, and high-pressure water is not prone to leakage.

Description

TECHNICAL FIELD

[0001] The utility model relates to a drilling rig technical field, concretely relates to a high pressure abrasive drill rig flexible drill rod. BACKGROUND

[0002] In the coal mine and stone industry, roadway mining, roadway tunneling, coal mining roadway support and rock mining etc. all need to drill rock or hard mineral to achieve different purposes, for example, used for gas advanced drainage in the downhole recovery working face crossheading tunneling, used for coal seam rock burst prevention and other geotechnical engineering construction drilling and pressure relief rock breaking etc. At present, water jet technology develops rapidly and has been widely applied in mining, aviation, construction, chemical industry, metallurgy, municipal engineering, metal cutting, rock breaking and cleaning etc. fields. Since water jet is a cold drilling method, can effectively avoid the generation of sparks in the cutting process, its drilling principle mainly relies on the energy degree concentration of the water molecules shot out at high pressure and high speed, the huge impact force of the shooting object can work on the hit object, such as drilling and cutting of materials. The high pressure abrasive jet drilling machine of the prior art adopts drill rod rotation, through the abrasive drilling front mixing mode, makes the abrasive and high pressure water uniformly mixed in the abrasive tank, forms a mixed liquid, is connected to the drilling machine through the pipeline and is shot out through the abrasive jet drill bit. Its deficiency lies in that the drill rod is a steel drill rod, and the length of each drill rod is between 1 to 2 meters, due to the limited space in the coal mine, multiple drill rods need to be frequently connected every time drilling construction is carried out, which greatly reduces the construction efficiency. SUMMARY

[0003] The utility model discloses a high pressure abrasive drill rig flexible drill rod can replace the traditional rigid drill rod, and the installation and removal are convenient, and the construction efficiency is high.

[0004] The utility model discloses a high pressure abrasive drill rig flexible drill rod, including high pressure flexible pipe and connecting head, the high pressure flexible pipe is used to flow high pressure water, the high pressure flexible pipe one end is connected with abrasive drill rig, and the other end is connected with the tail of connecting head, be equipped with drive nozzle water channel, jet cutting nozzle water channel and cavity area in connecting head, in the cavity area, from the head of connecting head starts in proper order and is equipped with bearing mounting area I, drive nozzle water tank, jet cutting nozzle water tank and bearing mounting area II, drive nozzle water tank is linked together with drive nozzle water channel, jet cutting nozzle water tank is linked together with jet cutting nozzle water channel, bearing mounting area I and bearing mounting area II are used to install bearing.

[0005] As the further improvement of the utility model, the high pressure flexible pipe is pressure-resistant rubber pipe, and the inner diameter is greater than or equal to 32mm, and the outer diameter is less than or equal to 100mm;The pressure bearing range is 30-60Mpa.

[0006] As a further improvement of the utility model, a protective sleeve is arranged on the high-pressure flexible pipe.

[0007] As a further improvement of the utility model, the protective sleeve is a stainless steel bellows or tightly wound steel wire.

[0008] As a further improvement of the utility model, a sealing ring annular groove I is arranged between the bearing mounting area I and the driving nozzle water supply groove, a sealing ring annular groove II is arranged between the driving nozzle water supply groove and the jet cutting nozzle water supply groove, and a sealing ring annular groove III is arranged between the jet cutting nozzle water supply groove and the bearing mounting area II; the sealing ring annular groove I, the sealing ring annular groove II and the sealing ring annular groove III are used for rotating sealing rings.

[0009] As a further improvement of the utility model, the driving nozzle water supply groove and the jet cutting nozzle water supply groove are annular grooves.

[0010] As a further improvement of the utility model, the driving nozzle water supply channel is communicated with the driving nozzle water supply groove from the lower part of the cavity area, and the jet cutting nozzle water supply channel is communicated with the jet cutting nozzle water supply groove from the upper part of the cavity area.

[0011] As a further improvement of the utility model, the high-pressure flexible pipe and the connecting head are sleeved or threadedly connected.

[0012] The utility model has the advantages of:

[0013] (1) The drill rod is made of a flexible rubber pipe, has good bending performance, has pressure bearing capacity for high-pressure water, and has a length much longer than that of a traditional single steel drill rod, so that the pipe does not need to be connected during drilling, is more flexible during use, and has fewer high-pressure water leakage points due to fewer connection points when high-pressure water flows in the pipe.

[0014] (2) The stainless steel bellows or wound steel wire arranged on the pressure-resistant rubber pipe can effectively protect the pressure-resistant rubber pipe during construction and prevent it from being worn and leaked.

[0015] (3) The three sealing ring annular grooves arranged in the connecting head can effectively block the impact of high-pressure water on the two bearing areas and block the flow of high-pressure water between the two high-pressure water interfaces. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model will be further described in detail in combination with the drawings and specific embodiments.

[0017] Figure 1 is a high-pressure abrasive drill rig flexible drill rod structure schematic view of the utility model.

[0018] Figure 2 is the internal structure diagram of the connector of the utility model;

[0019] In the figure, 1 is a high-pressure flexible pipe, 11 is a stainless steel corrugated pipe, 2 is a connector, 21 is a driving nozzle water supply channel, 22 is a water jet cutting nozzle water supply channel, 23 is a bearing mounting area I, 24 is a driving nozzle water supply groove, 25 is a water jet cutting nozzle water supply groove, 26 is a bearing mounting area II, 27 is a sealing ring annular groove I, 28 is a sealing ring annular groove II, and 29 is a sealing ring annular groove III. DETAILED DESCRIPTION

[0020] As shown in Figure 1 , a high-pressure abrasive drill vehicle flexible drill rod comprises a high-pressure flexible pipe 1 and a connector 2. One end of the high-pressure flexible pipe 1 is connected with a high-pressure abrasive drill vehicle, and the other end is connected with the tail of the connector 2 through screwing.

[0021] As shown in Figure 2 , the connector 2 is cylindrical in shape and comprises a driving nozzle water supply channel 21, a water jet cutting nozzle water supply channel 22 and a cavity area. The driving nozzle water supply channel 21 and the water jet cutting nozzle water supply channel 22 are both in communication with the inside of the high-pressure flexible pipe 1. In the cavity area, there are a bearing mounting area I 23, a driving nozzle water supply groove 24, a water jet cutting nozzle water supply groove 25 and a bearing mounting area II 26. The driving nozzle water supply groove 24 is in communication with the driving nozzle channel 21, and the water jet cutting nozzle water supply groove 25 is in communication with the water jet cutting nozzle water supply channel 22. Specifically, the driving nozzle water supply channel 21 is in communication with the driving nozzle water supply groove 24 from the lower part of the cavity area, and the water jet cutting nozzle water supply channel 22 is in communication with the water jet cutting nozzle water supply groove 25 from the upper part of the cavity area. The driving nozzle water supply groove 24 and the water jet cutting nozzle water supply groove 25 are both annular grooves, that is, a groove is cut around the inner wall of the connector 2. The bearing mounting area I 23 and the bearing mounting area II 26 are used for mounting bearings. The connector 2 is used for connecting with a water jet drill bit, and the bearing mounting area I 23 and the bearing mounting area II 26 can make the water jet drill bit rotate relative to the connector 2.

[0022] Specifically, the high-pressure flexible pipe 1 is a pressure-resistant rubber pipe, the pressure range of which is 30-6-MPa, the outer diameter of which is 100 mm, and the inner diameter of which is 32 mm. Since the pressure-resistant rubber pipe has good flexibility and bendability, it is very suitable for use in the drilling process, and its length can be very long, such as 50 meters or 100 meters. Compared with the traditional single rigid drill rod, its advantages are obvious, that is, it does not need to be frequently replaced and connected, and it can also reduce the occurrence of high-pressure water leakage (steel drill rods are prone to water leakage at the connection). At the same time, after the drilling is completed, the high-pressure flexible pipe 1 can be coiled and stored, which occupies very small space and is convenient to store and take out.

[0023] The driving nozzle water supply groove 24 and the jet cutting nozzle water supply groove 25 are annular grooves. A sealing ring annular groove I27 is arranged between the bearing mounting area I23 and the driving nozzle water supply groove 24; a sealing ring annular groove II28 is arranged between the driving nozzle water supply groove 24 and the jet cutting nozzle water supply groove 25; and a sealing ring annular groove III29 is arranged between the jet cutting nozzle water supply groove 25 and the bearing mounting area I26I, for preventing high-pressure water from entering the bearing mounting area I23 and the bearing mounting area 26 and the driving nozzle water supply groove 24 and the jet cutting nozzle water supply groove 25, and separating the driving high-pressure water and the jet cutting high-pressure water into two independent paths.

[0024] The stainless steel bellows 11 is sleeved outside the high-pressure flexible pipe 1, which can prevent the pressure-resistant rubber pipe from being abraded by the hole wall during drilling, and in actual use, steel wires can be tightly wound outside the pressure-resistant rubber pipe to increase the wear resistance of the pressure-resistant rubber pipe.

[0025] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to this, and various changes can be made within the knowledge range of the technical personnel in the technical field, without departing from the purpose of the utility model, which are all within the protection range of the utility model claim.

Claims

1. A flexible drill pipe for a high pressure abrasive drill rig, characterized in that, The utility model provides a high pressure flexible pipe and connecting head, the high pressure flexible pipe (1) is used to flow high pressure water, one end of high pressure flexible pipe (1) is connected with abrasive drilling vehicle, the other end is connected with the tail of connecting head (2), the connecting head (2) is equipped with drive nozzle water supply channel (21), water supply channel (22) of jet cutting nozzle and cavity area, in the cavity area, bearing mounting area I (23) is successively equipped with drive nozzle water supply groove (24), jet cutting nozzle water supply groove (25) and bearing mounting area II (26) from the head of connecting head (2), drive nozzle water supply groove (24) is linked with drive nozzle water supply channel (21), jet cutting nozzle water supply groove (25) is linked with jet cutting nozzle water supply channel (22), bearing mounting area I (23) and bearing mounting area II (26) are used to install bearing.

2. The flexible drill pipe for high pressure abrasive drilling jumbo according to claim 1, characterized in that, The high pressure flexible pipe (1) is a pressure-resistant rubber pipe, with an inner diameter of greater than or equal to 32 mm and an outer diameter of less than or equal to 100 mm, and a pressure-bearing range of 30-60 Mpa.

3. The flexible drill pipe for high pressure abrasive drilling jumbo according to claim 1, characterized in that, A protective sleeve is provided on the high pressure flexible pipe (1).

4. The flexible drill pipe of claim 3, wherein, The protective sleeve is a stainless steel bellows (11) or a tightly wound steel wire.

5. The flexible drill pipe of the high pressure abrasive drill rig of claim 1, wherein, A sealing ring annular groove I (27) is provided between the bearing mounting area I (23) and the drive nozzle water supply groove (24), a sealing ring annular groove II (28) is provided between the drive nozzle water supply groove (24) and the jet cutting nozzle water supply groove (25), and a sealing ring annular groove III (29) is provided between the jet cutting nozzle water supply groove (25) and the bearing mounting area II (26); the sealing ring annular groove I (27), the sealing ring annular groove II (28), and the sealing ring annular groove III (29) are used for rotating sealing rings.

6. The flexible drill pipe of the high pressure abrasive drill rig of claim 1, wherein, The drive nozzle water supply groove (24) and the jet cutting nozzle water supply groove (25) are annular grooves.

7. The flexible drill pipe of claim 5, wherein, The drive nozzle water supply channel (21) is communicated with the drive nozzle water supply groove (24) from the lower part of the cavity area, and the jet cutting nozzle water supply channel (22) is communicated with the jet cutting nozzle water supply groove (25) from the upper part of the cavity area.

8. The flexible drill pipe of the high pressure abrasive drill rig of claim 1, wherein, The high pressure flexible pipe (1) and the connecting head (2) are sleeved or screw-connected.

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