Gas-liquid control device and drilling equipment

Abstract

The utility model relates to a gas-liquid control device and well drilling equipment, and the gas-liquid control device comprises a mandrel, an outer sleeve, a support ring, a first sealing assembly, a bushing, a second sealing assembly and a compression ring, the supporting ring, the first sealing assembly, the lining, the second sealing assembly and the pressing ring are arranged between the mandrel and the outer sleeve and are sequentially arranged in the axial direction of the mandrel, the outer sleeve is arranged on a lifting platform of drilling equipment, and the supporting ring and the lining are used for clamping the first sealing assembly to form a first sealing area. According to the gas-liquid control device, the second sealing assembly is clamped through the pressing ring and the lining to form the second sealing area, the sealing structure of the gas-liquid control device is improved, the sealing performance of the gas-liquid control device can be guaranteed, the frequency of sealing failure of the gas-liquid control device can be reduced, and the service life of the gas-liquid control device is prolonged. The first sealing assembly and the second sealing assembly are clamped through the supporting ring and the pressing ring, and the sealing performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of geological exploration drilling, and concretely relates to a gas-liquid control device and drilling equipment. BACKGROUND

[0002] The gas-liquid control device is a key component of the air drilling machine, and is used for transmitting power to the drill rod and conveying gas and water. Figure 9 As shown in the figure, the existing gas and water faucet includes a mandrel 100 and a sleeve 200 sleeved on the periphery of the mandrel 100, the upper end of the sleeve 200 is an upper copper sleeve 400, the lower end of the sleeve 200 is a lower copper sleeve 600, an upper sealing ring 500 is arranged between the upper copper sleeve 400 and the mandrel 100, and a lower sealing ring 700 is arranged between the lower copper sleeve 600 and the mandrel 100. The sleeve 200 is provided with an interface 300 for inputting gas and water, the mandrel 100 is provided with a gas and water passage with an open lower end and a closed upper end, and the outer side of the mandrel 100 is provided with a first annular groove in communication with the interface and a plurality of through holes in communication with the first annular groove and the gas and water passage.

[0003] When the above-mentioned gas-liquid control device is applied to the air drilling machine, the sleeve 200 is connected to the lifting platform of the air drilling machine, the upper end of the mandrel 100 is connected to the output end of the hydraulic motor connected to the lifting platform of the air drilling machine, and the upper end of the drill rod of the air drilling machine is connected to the lower end of the mandrel 100. The hydraulic motor can drive the mandrel 100 to rotate. In the case that the mandrel 100 rotates relative to the sleeve 200, the water and gas entering and exiting from the interface can be conveyed to the drill rod of the air drilling machine through the first annular groove, the through holes and the gas and water passage.

[0004] As shown in the figure, the existing gas-liquid control device has the following technical problems in the use process: Figure 1 Both the upper sealing ring and the lower sealing ring are O-shaped sealing rings, which are not wear-resistant and are prone to deformation. In the case that the air drilling machine drills several well sites, the O-shaped sealing ring may be deformed, which may cause the gas and water faucet to leak. Replacing the O-shaped sealing ring will reduce the drilling efficiency and increase the drilling cost.

[0005] In the case that the air drilling machine is under heavy load and runs for a long time, the gas and water faucet is prone to sealing failure due to copper sleeve wear and breakage. According to statistics, a new gas-liquid control device will have copper sleeve wear or even breakage after drilling about 60 well sites, and the sleeve needs to be replaced. The material cost of the upper copper sleeve and the lower copper sleeve is high, and replacing the sleeve will reduce the drilling efficiency and greatly increase the drilling cost.

[0006] INVENTION CONTENTS

[0007] ​The utility model provides a kind of gas-liquid control device, with good sealing performance, can reduce the frequency of sealing failure, improve the efficiency of well drilling, reduce the cost of well drilling.

[0008] In one aspect, the utility model provides a kind of gas-liquid control device, comprising:

[0009] Core shaft, the inside of the core shaft is sequentially provided with power motor connecting portion, gas-liquid passage and drill rod equipment connecting portion from its axial direction, the power motor connecting portion and the gas-liquid passage are provided with partition, the gas-liquid passage and the drill rod equipment connecting portion are communicated, the core shaft is provided with the first annular groove recessed from its outer surface to inner surface in the region corresponding to the liquid passage, and the first annular groove and the gas-liquid passage are communicated by multiple first through holes;Outer sleeve, it is set in the outside of the core shaft, and the region corresponding to the first annular groove is provided with gas-liquid input connector;Support ring, it is arranged between the core shaft and the outer sleeve;First sealing assembly, it is arranged between the core shaft and the outer sleeve;Bushing, it is arranged between the core shaft and the outer sleeve, and is correspondingly arranged with the first annular groove, and the bushing is provided with multiple second through holes;Second sealing assembly, it is arranged between the core shaft and the outer sleeve;Ring, it is arranged between the core shaft and the outer sleeve;The support ring, the first sealing assembly, the bushing, the second sealing assembly and the ring are sequentially arranged in the axial direction of the core shaft.

[0010] In some optional embodiments, the core shaft includes a core shaft body and the first outer flange, the first outer flange is arranged at one end of the core shaft body, the outer sleeve is set on the outside of the core shaft body, and the support ring, the first sealing assembly, the bushing, the second sealing assembly and the ring are sequentially arranged in the axial direction of the core shaft body.

[0011] In some optional embodiments, the support ring is provided with a first groove and a second groove at two ends arranged in opposite directions in its axial direction respectively, the first groove and the second groove are recessed from the outer surface to the inner surface of the support ring, the inner surface of the support ring is attached to the outer surface of the core shaft body, and the outer surface of the support ring is attached to the inner surface of the outer sleeve.

[0012] In some optional embodiments, it further includes a gasket, the gasket is arranged between the support ring and the first outer flange, the gasket includes a gasket body and a protrusion, the protrusion is arranged along the circumference of the gasket body, the gasket body is attached to the first outer flange, and the protrusion is arranged in the first groove.

[0013] In some optional embodiments, it further includes a first o-shaped sealing ring, and the first o-shaped sealing ring is arranged in the second groove.

[0014] In some optional embodiments, the first sealing assembly comprises a plurality of first sealing components arranged in layers.

[0015] In some optional embodiments, the second sealing assembly comprises a plurality of second sealing components arranged in layers.

[0016] In some optional embodiments, a second O-ring is further included, which is arranged between the pressure ring and the second sealing assembly in the axial direction of the mandrel body.

[0017] In some optional embodiments, the bushing is provided with a second annular groove corresponding to the first annular groove, which is recessed from the outer surface to the inner surface of the bushing, and the second through hole communicates the first annular groove and the second annular groove.

[0018] In another aspect, the application provides a drilling equipment, characterized in that it comprises the gas-liquid control device mentioned in any of the above.

[0019] Compared with the prior art, the utility model has the following technical effects:

[0020] The utility model provides a kind of gas-liquid control device, including mandrel, outer sleeve, support ring, first sealing assembly, bushing, second sealing assembly and pressure ring, outer sleeve is set in the outside of mandrel, support ring, first sealing assembly, bushing, second sealing assembly and pressure ring are arranged between mandrel and outer sleeve, and in the axial direction of mandrel, outer sleeve is arranged in the lifting platform of drilling equipment, power motor connecting portion is connected with the output end of power motor, drill rod is connected with drill rod connecting portion, power motor can drive mandrel rotation, under the condition that mandrel rotates relative to outer sleeve, water and compressed air input from input port can be transported into the drill rod of drilling equipment by gas-liquid input connector, second through hole, first annular groove, first through hole and gas-liquid passage, first sealing region is formed by using support ring and bushing to clamp first sealing assembly, second sealing region is formed by using pressure ring and bushing to clamp second sealing assembly, improve the sealing structure of gas-liquid control device, can guarantee the sealing performance of gas-liquid control device, help to reduce the frequency that gas-liquid control device appears sealing failure, using support ring and pressure ring to clamp first sealing assembly and second sealing assembly, support ring and pressure ring are more wear-resistant, the possibility that support ring and pressure ring appear abrasion and fracture is lower, help to guarantee the sealing performance of gas-liquid control device. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0022] Figure 1 A cross-sectional structural schematic diagram of the gas-liquid control device according to an embodiment of the present invention is shown;

[0023] Figure 2 A schematic diagram of the support ring according to an embodiment of the present invention is shown;

[0024] Figure 3 A schematic diagram of the structure of a first sealing assembly according to an embodiment of the present invention is shown;

[0025] Figure 4 A schematic diagram of the structure of the first sealing assembly according to another embodiment of the present invention is shown;

[0026] Figure 5 A schematic diagram of the structure of a second sealing assembly according to an embodiment of the present invention is shown;

[0027] Figure 6 A schematic diagram of the structure of the second sealing assembly according to another embodiment of the present invention is shown;

[0028] Figure 7 for Figure 1 The diagram shown is a structural schematic of the gas-liquid control device according to an embodiment of the present invention.

[0029] Figure 8 for Figure 1 The diagram shown is a structural schematic of the gas-liquid control device according to an embodiment of the present invention.

[0030] Figure 9 A schematic diagram of the structure of a gas-liquid control device in the prior art is shown.

[0031] in, Figures 1-9 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0032] 1-Mandrel; 11-Power motor connection; 12-Gas-liquid channel; 13-Drill pipe connection; 14-Partition; 15-First annular groove; 16-First through hole; 17-Mandrel body; 18-First outer flange; 2-Outer sleeve; 21-Gas-liquid input connector; 22-First connecting lug; 3-Support ring; 31-First groove; 32-Second groove; 4-First sealing assembly; 41-First sealing component; 411-First V-ring seal; 412-Second V-ring seal 413 - Third V-ring seal; 5 - Bushing; 51 - Second through hole; 52 - Second annular groove; 6 - Second sealing assembly; 61 - Second sealing component; 611 - Fourth V-ring seal; 612 - Fifth V-ring seal; 613 - Sixth V-ring seal; 7 - Pressure ring; 71 - Second outer flange; 72 - Pressure ring body; 73 - Second connecting lug; 8 - Washer; 81 - Washer body; 82 - Protrusion; 91 - First O-ring seal; 92 - Second O-ring seal. DETAILED DESCRIPTION

[0033] In order to enable the above-mentioned purposes, features and advantages of the present application to be more clearly understood, the present application will be described in further detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0034] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in other ways that are different from those described herein, and the scope of the present application is not limited to the specific embodiments disclosed below.

[0035] The gas-liquid control device is a key component of the air drilling machine, and is used for transmitting power to the drill pipe and conveying gas and water. As shown in Figure 9 The existing gas and water faucet includes a mandrel 100 and a sleeve 200 sleeved on the periphery of the mandrel 100, the upper end of the sleeve 200 is an upper copper sleeve 400, the lower end of the sleeve 200 is a lower copper sleeve 600, an upper sealing ring 500 is arranged between the upper copper sleeve 400 and the mandrel 100, and a lower sealing ring 700 is arranged between the lower copper sleeve 600 and the mandrel 100. An interface 300 for inputting gas and water is arranged on the sleeve 200, a gas and water passage with an open lower end and a closed upper end is arranged in the mandrel 100, and a first annular groove 15 in communication with the interface and a plurality of through holes in communication with the first annular groove 15 and the gas and water passage are arranged on the outer side surface of the mandrel 100.

[0036] When the above-mentioned gas-liquid control device is applied to the air drilling machine, the sleeve 200 is connected to the lifting platform of the air drilling machine, the upper end of the mandrel 100 is connected to the output end of the hydraulic motor connected to the lifting platform of the air drilling machine, the upper end of the drill pipe of the air drilling machine is connected to the lower end of the mandrel 100, and the hydraulic motor can drive the mandrel 100 to rotate. In the case that the mandrel 100 rotates relative to the sleeve 200, the water and gas entering and exiting from the interface can be conveyed to the drill pipe of the air drilling machine through the first annular groove 15, the through holes and the gas and water passage.

[0037] As shown in Figure 1 The existing gas-liquid control device has the following technical problems in the use process:

[0038] The upper sealing ring and the lower sealing ring are both O-shaped sealing rings, the O-shaped sealing ring is not wear-resistant and is easy to deform, and the O-shaped sealing ring may be deformed after drilling several well sites of the air drilling machine, thereby causing the gas and water faucet to leak, and replacing the O-shaped sealing ring will reduce the drilling efficiency and increase the drilling cost.

[0039] In the case of large load and long time operation of the air drilling machine, the air and water faucet is prone to sealing failure due to copper sleeve wear and breakage. According to statistics, a new gas-liquid control device will have copper sleeve wear or even breakage after working for about 60 well sites, and the sleeve needs to be replaced, which will increase the cost of the upper and lower copper sleeves and reduce the drilling efficiency and greatly increase the drilling cost.

[0040] The utility model provides a kind of gas-liquid control device, with good sealing performance, can reduce the frequency of sealing failure, improve the efficiency of drilling, reduce the cost of drilling.

[0041] The utility model provides a kind of gas-liquid control device, gas-liquid control device includes: mandrel 1, the inside of mandrel 1 is sequentially provided with power motor connecting portion 11, gas-liquid passage 12 and drill rod equipment connecting portion 13 from its axial direction, disconnect 14 is provided between power motor connecting portion 11 and gas-liquid passage 12, gas-liquid passage 12 and drill rod equipment connecting portion 13 are communicated, mandrel 1 is provided with the first annular groove 15 recessed from its outer surface to inner surface in the region corresponding to gas-liquid passage 12, and the first annular groove 15 and gas-liquid passage 12 are communicated by multiple first through holes 16;Outer sleeve 2 is sleeved on the outside of mandrel 1, and gas-liquid input connector 21 is arranged in the region corresponding to the first annular groove 15;Support ring 3 is arranged between mandrel 1 and outer sleeve 2;First sealing assembly 4 is arranged between mandrel 1 and outer sleeve 2;Bushing 5 is arranged between mandrel 1 and outer sleeve 2, and is arranged corresponding to the first annular groove 15, and bushing 5 is provided with multiple second through holes 51;Second sealing assembly 6 is arranged between mandrel 1 and outer sleeve 2;Compression ring 7 is arranged between mandrel 1 and outer sleeve 2;Support ring 3, first sealing assembly 4, bushing 5, second sealing assembly 6 and compression ring 7 are sequentially arranged in the axial direction of mandrel 1.

[0042] Specifically, the gas-liquid control device comprises a mandrel 1, an outer sleeve 2, a support ring 3, a first sealing assembly 4, a bushing 5, a second sealing assembly 6 and a compression ring 7, the outer sleeve 2 is sleeved outside the mandrel 1, the support ring 3, the first sealing assembly 4, the bushing 5, the second sealing assembly 6 and the compression ring 7 are sequentially arranged between the mandrel 1 and the outer sleeve 2 in the axial direction of the mandrel 1, the outer sleeve 2 is arranged on a lifting platform of a drilling device, a power motor connecting part 11 is connected with an output end of a power motor, a drill rod is connected with a drill rod connecting part, the power motor can drive the mandrel 1 to rotate, under the condition that the mandrel 1 rotates relative to the outer sleeve 2, water and compressed air input from an input port can be transported into a drill rod of the drilling device through a gas-liquid input joint 21, a second through hole 51, a first annular groove 15, a first through hole 16 and a gas-liquid channel 12, the first sealing area is formed by clamping the first sealing assembly 4 by the support ring 3 and the bushing 5, the second sealing area is formed by clamping the second sealing assembly 6 by the compression ring 7 and the bushing 5, the sealing structure of the gas-liquid control device is improved, the sealing performance of the gas-liquid control device can be ensured, and the frequency of sealing failure of the gas-liquid control device can be reduced.

[0043] Optionally, the compression ring 7 is a steel compression ring, the compression ring 7 is fixedly connected with the outer sleeve 2, and the support ring 3 is a steel support ring 3 which is directly or indirectly upwardly supported on the first outer flange 18. By improving the sealing structure of the gas-liquid control device, the first sealing area is formed by clamping the first sealing assembly 4 by the steel support ring 3 and the bushing 5, and the second sealing area is formed by clamping the second sealing assembly 6 by the compression ring 7 and the bushing 5, so that the sealing performance of the gas-liquid control device can be ensured. Optionally, the first sealing assembly 4 is a cloth-sealed ring set, and the second sealing assembly 6 is a cloth-sealed ring set. The sealing performance, wear resistance and deformation resistance of the cloth-sealed ring set are better than those of the O-shaped sealing ring, and the frequency of sealing failure of the gas-liquid control device can be reduced. The first sealing assembly 4 and the second sealing assembly 6 are clamped by the steel support ring 3 and the compression ring 7, and the support ring 3 and the compression ring 7 are made of steel. Compared with copper, steel is more wear-resistant, and the steel support ring 3 and the steel compression ring 7 are less likely to wear and break, so that the sealing performance of the gas-liquid control device can be ensured.

[0044] Specifically, the force with which the support ring 3 and the bushing 5 clamp the first sealing component 41 is an axial force, and the force with which the compression ring 7 and the bushing 5 clamp the second sealing assembly 6 is an axial force, so that the cooperation requirement between the support ring 3 and the mandrel body 17 and between the compression ring 7 and the mandrel body 17 is lower, and the possibility of wear of the support ring 3 and the compression ring 7 is reduced.

[0045] Further, the bushing 5 can also be made of steel to reduce the possibility of wear or breakage of the bushing 5.

[0046] In some alternative embodiments, the mandrel 1 comprises a mandrel body 17 and a first outer flange 18 arranged at one end of the mandrel body 17, the outer sleeve 2 is arranged outside the mandrel body 17, the support ring 3, the first sealing assembly 4, the bushing 5, the second sealing assembly 6 and the pressure ring 7 are arranged in sequence in the axial direction of the mandrel body 17.

[0047] In some alternative embodiments, the support ring 3 is provided with a first groove 31 and a second groove 32 at two axially opposite ends thereof, respectively, the first groove 31 and the second groove 32 are recessed from the outer surface to the inner surface of the support ring 3, the inner surface of the support ring 3 is in contact with the outer surface of the mandrel body 17, and the outer surface of the support ring 3 is in contact with the inner surface of the outer sleeve 2.

[0048] In some alternative embodiments, the gasket 8 is further arranged between the support ring 3 and the first outer flange 18, the gasket 8 comprises a gasket body 81 and a protrusion 82 arranged along the circumference of the gasket body 81, the gasket body 81 is in contact with the first outer flange 18, and the protrusion 82 is arranged in the first groove 31.

[0049] Specifically, the gasket 8 is arranged on the mandrel body 17 and supported on the first outer flange 18, and the support ring 3 and the outer sleeve 2 are both supported on the gasket 8 in the direction of the first outer flange 18. By using the above technical solution, the position of the support ring 3 and the outer sleeve 2 can be adjusted by using gaskets 8 of different thicknesses, thereby reducing the assembly difficulty and manufacturing requirements of the gas-liquid control device.

[0050] In some alternative embodiments, the first O-shaped sealing ring 91 is further arranged in the second groove 32.

[0051] Specifically, the support ring 3 is provided with the second groove 32, the first O-shaped sealing ring 91 is arranged in the second groove 32, the support ring 3, the outer sleeve 2 and the first sealing assembly 4 form a closed mounting groove by enclosing the second groove 32, and the first O-shaped sealing ring is arranged in the closed mounting groove, which helps to improve the sealing performance of the gas-liquid control device. Optionally, the second groove 32 is a first stepped groove, and the mounting groove of the first O-shaped sealing ring is formed by the first stepped groove, the inner surface of the outer sleeve 2 and the upper surface of the first sealing assembly 4.

[0052] In some alternative embodiments, the first sealing assembly 4 comprises a plurality of first sealing components 41 arranged in layers. The first sealing assembly 4 is a V-shaped packing seal ring group. The V-shaped packing seal ring group can form a good seal between the mandrel body 17 and the outer sleeve 2 after being squeezed.

[0053] Specifically, the cross section of the first sealing assembly 4 is rectangular as a whole, which facilitates clamping of the first sealing assembly 4 by the support ring 3 and the bushing 5. The first sealing assembly 4 is stacked with a plurality of first sealing components 41 from top to bottom, and the plurality of first sealing components 41 are respectively a first V-shaped sealing ring 411, a second V-shaped sealing ring 412, and a third V-shaped sealing ring 413. The cross section of the second V-shaped sealing ring 412 is V-shaped, the lower side of the first V-shaped sealing ring 411 is V-shaped, and the upper side of the third V-shaped sealing ring 413 is V-shaped. In specific implementation, the number of sealing rings of the first sealing assembly 4 can be adjusted according to actual needs. The first V-shaped sealing ring 411, the second V-shaped sealing ring 412, and the third V-shaped sealing ring 413 can be steel sealing rings.

[0054] In some optional embodiments, the second sealing assembly 6 includes a plurality of second sealing components 61 stacked together. The second sealing assembly 6 is a V-shaped cloth sealing ring group. The V-shaped cloth sealing ring group can form a good seal between the mandrel body 17 and the outer sleeve 2 after being extruded.

[0055] Specifically, the V-shaped cloth sealing ring group can form a good seal between the mandrel body 17 and the outer sleeve 2 after being extruded. The cross section of the second sealing assembly 6 is rectangular as a whole, which facilitates clamping of the second sealing assembly 6 by the bushing 5 and the compression ring 7. The second sealing assembly 6 is stacked with a plurality of second sealing components 61 from top to bottom, and the plurality of second sealing components 61 are respectively a fourth V-shaped sealing ring 611, a fifth V-shaped sealing ring 612, and a sixth V-shaped sealing ring 613. The cross section of the fourth V-shaped sealing ring 611 is V-shaped, the lower side of the fifth V-shaped sealing ring 612 is V-shaped, and the upper side of the sixth V-shaped sealing ring 613 is V-shaped. In specific implementation, the number of sealing rings of the second sealing assembly 6 can be adjusted according to actual needs. The fourth V-shaped sealing ring 611, the fifth V-shaped sealing ring 612, and the sixth V-shaped sealing ring 613 can be steel sealing rings.

[0056] In some optional embodiments, a second O-shaped sealing ring 92 is further included, which is arranged between the compression ring 7 and the second sealing assembly 6 in the axial direction of the mandrel body 17.

[0057] Specifically, the second O-shaped sealing ring is arranged between the compression ring 7, the outer sleeve 2, and the second sealing assembly 6, which helps to improve the sealing performance of the drilling rig gas-liquid control device. In specific implementation, a second step groove can be arranged at the corner of the compression ring 7, and the second step groove, the inner surface of the outer sleeve 2, and the lower surface of the second sealing assembly 6 form a mounting groove of the second O-shaped sealing ring.

[0058] In some optional embodiments, the bushing 5 is provided with a second annular groove 52 corresponding to the first annular groove 15, the second annular groove 52 being recessed from the outer surface to the inner surface of the bushing 5, and the second through holes 51 communicate the first annular groove 15 and the second annular groove 52.

[0059] Specifically, the outer circumferential surface of the bushing 5 is provided with the second annular groove 52 recessed from the outer surface to the inner surface, the inside of the gas-liquid input joint 21 is a gas-liquid input port, the gas-liquid input port communicates with the second annular groove 52, the plurality of second through holes 51 pass through the bottom and the inner surface of the second annular groove 52, and the first annular groove 15 recessed from the outer surface to the inner surface is arranged at a position opposite to the second groove 32 of the mandrel body 17, and the plurality of second through holes 51 communicate the second annular groove 52 and the first annular groove 15. When the outer sleeve 2 and the bushing 5 rotate relative to each other, the second annular groove 52 and the gas-liquid input port of the gas-liquid input joint 21 can remain in communication.

[0060] Further, the second through hole 51 is a waist-shaped hole extending radially along the bushing 5, and the second through hole 51 is arranged as a waist-shaped hole, which can increase the opening area of the second through hole 51 while ensuring the structural performance of the bushing 5.

[0061] In some embodiments, the pressure ring 7 includes a pressure ring body 72 and a second outer flange 71, the second outer flange 71 is arranged at the end of the pressure ring body 72, and the second outer flange 71 is provided with a second flange structure. The outer sleeve 2 includes a sleeve body, a gas-liquid input joint 21 fixedly connected to the outside of the sleeve body, and a first flange structure arranged at the end of the sleeve body. In order to facilitate connection with the lifting platform of the air drilling machine, a connecting bracket for connecting with the lifting platform of the air drilling machine is fixedly connected to the sleeve body.

[0062] Specifically, the outer sleeve 2 is provided with a first flange structure at one end away from the first outer flange 18, the pressure ring 7 is provided with a second outer flange 71 at one end away from the first outer flange 18, the second outer flange 71 is provided with a second flange structure, the second flange structure is fitted with the first flange structure, and the first flange structure and the second flange structure are fixedly connected through a bolt connection structure. By using the above technical solution, the bolt connection structure can be used to adjust the clamping force of the support ring 3 and the bushing 5 clamping the first sealing assembly 4, and to adjust the clamping force of the pressure ring 7 and the bushing 5 clamping the second sealing assembly 6. The sealing performance of the first sealing assembly 4 and the second sealing assembly 6 can be restored by increasing the clamping force, which helps to prolong the normal working life of the first sealing ring group and helps to improve the working efficiency of the drilling operation.

[0063] Further, the first flange structure comprises a plurality of first connecting lugs 22, the second flange structure comprises a plurality of second connecting lugs 73, the bolt connecting structure connects the first flange structure and the second flange structure, the bolt connecting structure comprises a plurality of bolts and a plurality of nuts, each of the plurality of first connecting lugs 22 is provided with a first mounting hole, each of the plurality of second connecting lugs 73 is provided with a second mounting hole, and the plurality of bolts are respectively connected with the plurality of nuts after penetrating through the plurality of first mounting holes and the plurality of second mounting holes, so as to fixedly connect the plurality of first connecting lugs 22 and the plurality of second connecting lugs 73 together.

[0064] In some optional embodiments, the mandrel 1, the outer sleeve 2 and the gasket 8 can all be made of steel, for example, 45 steel.

[0065] The utility model also provides a kind of drilling equipment, including the gas-liquid control device mentioned in any one of above.

[0066] Specifically, the power motor connecting portion 11 can be a connecting groove provided in the mandrel body 17, and the drill rod connecting portion can be a shaft section provided in the mandrel body 17 and protruding from the outer sleeve 2, and an external thread is provided on the outer circumferential surface of the shaft section.

[0067] In the utility model, the term "a plurality of" refers to at least two or more than two, unless otherwise explicitly limited. The terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, "connection" can be fixed connection, or detachable connection, or integrally connected. "Connected" can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0068] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0069] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A gas-liquid control device characterized by comprising: The utility model relates to a kind of drilling equipment, including: Core shaft (1), the inside of the core shaft (1) is sequentially provided with power motor connecting portion (11) from itself axial, gas-liquid passage (12) and drill rod equipment connecting portion (13), partition (14) is provided between the power motor connecting portion (11) and the gas-liquid passage (12), the gas-liquid passage (12) and the drill rod equipment connecting portion (13) are communicated, the core shaft (1) is provided with the first annular groove (15) recessed by itself outer surface to inner surface in the region corresponding to the gas-liquid passage (12), and the first annular groove (15) and the gas-liquid passage (12) are communicated by multiple first through holes (16); Outer sleeve (2), sleeve is set to the outside of the core shaft (1), and gas-liquid input connector (21) is provided in the region corresponding to the first annular groove (15); Support ring (3) is provided between the core shaft (1) and the outer sleeve (2); First sealing assembly (4) is provided between the core shaft (1) and the outer sleeve (2); Bushing (5) is provided between the core shaft (1) and the outer sleeve (2), and is provided with multiple second through holes (51); Second sealing assembly (6) is provided between the core shaft (1) and the outer sleeve (2); Compression ring (7) is provided between the core shaft (1) and the outer sleeve (2); The support ring (3), the first sealing assembly (4), the bushing (5), the second sealing assembly (6) and the compression ring (7) are sequentially provided in the axial direction of the core shaft (1).

2. The gas-liquid control device according to claim 1, characterized by The core shaft (1) includes core shaft body (17) and first outer flange (18), the first outer flange (18) is provided at one end of the core shaft body (17), the outer sleeve (2) is sleeved on the outside of the core shaft body (17), and the support ring (3), the first sealing assembly (4), the bushing (5), the second sealing assembly (6) and the compression ring (7) are sequentially provided in the axial direction of the core shaft body (17).

3. The gas-liquid control device according to claim 2, characterized by The support ring (3) is provided with first recess (31) and second recess (32) at two ends of itself axial direction respectively, the first recess (31) and the second recess (32) are recessed by the outer surface to the inner surface of the support ring (3), the inner surface of the support ring (3) is attached to the outer surface of the core shaft body (17), and the outer surface of the support ring (3) is attached to the inner surface of the outer sleeve (2).

4. The gas-liquid control device according to claim 3, characterized by It further includes gasket (8), the gasket (8) is provided between the support ring (3) and the first outer flange (18), the gasket (8) includes gasket body (81) and protrusion (82), the protrusion (82) is provided along the circumference of the gasket body (81), the gasket body (81) is attached to the first outer flange (18), and the protrusion (82) is provided in the first recess (31).

5. The gas-liquid control device according to claim 4, wherein It further includes first o-shaped sealing ring (91), and the first o-shaped sealing ring (91) is provided in the second recess (32).

6. The gas-liquid control device according to claim 1, wherein The first sealing assembly (4) comprises a plurality of first sealing components (41) arranged in layers.

7. The gas-liquid control device according to claim 1, wherein The second sealing assembly (6) comprises a plurality of second sealing components (61) arranged in layers.

8. The gas-liquid control device according to claim 2, wherein A second O-ring (92) is further included, which is arranged between the pressure ring (7) and the second sealing assembly (6) in the axial direction of the mandrel body (17).

9. The gas-liquid control device according to claim 1, wherein The bushing (5) is provided with a second annular groove (52) corresponding to the first annular groove (15), which is recessed from the outer surface to the inner surface of the bushing (5), and the second through hole (51) communicates the first annular groove (15) and the second annular groove (52).

10. A drilling apparatus, characterized by The gas-liquid control device mentioned in any one of claims 1-9 is included.

Images