CN112377090A - Spray lubrication drill rod - Google Patents
Spray lubrication drill rod Download PDFInfo
- Publication number
- CN112377090A CN112377090A CN202011161268.5A CN202011161268A CN112377090A CN 112377090 A CN112377090 A CN 112377090A CN 202011161268 A CN202011161268 A CN 202011161268A CN 112377090 A CN112377090 A CN 112377090A
- Authority
- CN
- China
- Prior art keywords
- channel
- joint
- female joint
- male
- male connector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005461 lubrication Methods 0.000 title claims abstract description 31
- 239000007921 spray Substances 0.000 title claims abstract description 25
- 239000010687 lubricating oil Substances 0.000 claims abstract description 30
- 239000003921 oil Substances 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims description 31
- 238000004891 communication Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000003595 mist Substances 0.000 abstract description 6
- 238000005553 drilling Methods 0.000 description 35
- 238000010276 construction Methods 0.000 description 13
- 239000003245 coal Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 230000001050 lubricating effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/02—Fluid rotary type drives
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/003—Bearing, sealing, lubricating details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/04—Lubrication
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a spray lubrication drill rod which comprises a rod body, a male joint and a female joint, wherein a piston assembly is arranged in an annular gap between an inner pipe and an outer pipe of the rod body; the female joint body is provided with a plurality of channels A; the male connector body is provided with a plurality of channels B, the channels C can be communicated with the channels B and a central channel of the male connector, and a plug-in throttle valve and an atomizing nozzle are sequentially arranged in the channels C; the male connector body is also provided with a plurality of channels E, the channel D can be communicated with the channels E and the central channel of the male connector, and a valve core is arranged in the channel E. When oil is added into the rod body, lubricating oil can flow from the channel C to the annular space through the channel B so as to push the piston assembly to move forward. During operation, high-pressure gas can enter the annular space from the passage A to push the piston assembly to move reversely to push lubricating oil to enter the passage B, and the lubricating oil is injected into the central passage of the male connector after passing through the plug-in throttle valve and the atomizing nozzle in sequence and enters the interior of the screw motor along with the high-pressure gas to play a role in lubrication; the amount of sprayed lubricating oil mist can be adjusted in a self-adaptive mode according to the rotating speed of the motor.
Description
Technical Field
The invention belongs to the field of drill rods for tunnel drilling machines, and relates to a spray lubrication drill rod.
Background
The gas control of soft and broken coal seams is always a difficult point and a key point in the field of coal mine gas control. The common rotary drilling is adopted for gas drainage drilling construction, the drilling hole depth is not deep generally due to the influence of coal seam breakage, the drilling track is not controllable, the drilling hole easily enters a top plate and a bottom plate, a large number of ineffective drilling holes are generated, and the gas extraction effect is influenced. In the traditional directional drilling technology, high-pressure water is mostly used as a power source to drive a screw motor to do work so as to carry out drilling construction; when the technology is applied to a soft and broken coal seam, because the coal arms around the drill holes are poor in structure and the hole walls are quite unstable, hole collapse and buried drill accidents are easy to happen under the washing of water.
The air screw motor directional drilling technology adopts compressed air as a power source to drive the screw motor to do work to carry out drilling construction. The technology realizes the controllability of the drilling track, avoids the risks of hole collapse and drill burying caused by water erosion, and is an effective technical means for gas control of soft and broken coal seams. However, the compressed air has no way to lubricate the screw motor and take away heat generated by the screw motor in time, as high-pressure water does, thereby greatly affecting the service life of the screw motor. Therefore, how to effectively solve the problems of lubrication and temperature reduction in the long-term working process of the screw motor is always the key of the air screw motor directional drilling technology. In the prior art, a motor is lubricated by pouring lubricating oil into an inner hole of a newly-installed drill rod. However, the distance between the oiling point and the motor is increased along with the increase of the depth of the drilling hole, a large amount of oil can be attached to the inner wall of the drill rod and cannot reach the position, needing lubrication, of the motor, and the lubricating effect is poor.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the invention provides a spray lubrication drill rod, which solves the problem of motor lubrication in the process of directional drilling construction by adopting an air screw motor underground a coal mine.
In order to achieve the purpose, the invention adopts the following technical scheme:
a spray lubrication drill rod comprises a rod body, a male joint and a female joint, wherein the male joint and the female joint are respectively arranged at two ends of the rod body; the rod body comprises an inner tube and an outer tube, and a piston assembly is arranged in an annular gap between the inner tube and the outer tube;
the female joint comprises a female joint body and a female joint central channel, wherein the female joint body comprises a female joint connecting end, a female joint middle part and a female joint mounting end capable of mounting the rod body; the female joint body is provided with a plurality of channels A which are axially arranged and run through two ends of the female joint body; a coaxial throttling ring is arranged in the central channel of the female joint;
the male joint comprises a male joint body and a male joint central channel, and the male joint body comprises a male joint connecting end, a male joint middle part and a male joint mounting end capable of mounting the rod body; a plurality of axial channels B are arranged on the side wall of the male connector body, the channels B are communicated with the end face of the male connector mounting end and are not communicated with the male connector connecting end, and an oil liquid filter connector positioned at the end part of the male connector mounting end is arranged on the channels B; a channel C capable of communicating the channel B with a central channel of the male joint is arranged in the middle of the male joint, and a plug-in throttle valve and an atomizing nozzle are sequentially arranged in the channel C; the side wall of the male connector body is also provided with a plurality of channels E which are axially communicated with two ends of the male connector body, the middle part of the male connector body is provided with a channel D which can be communicated with the channel E and a central channel of the male connector, a valve core which can axially move is arranged in the channel E to block the channel D, and the channel E is provided with an oil liquid filtering connector which is positioned at the end part of the mounting end of the male connector;
the channel A can be hermetically communicated with the annular space on one side of the piston assembly, and the channel B and the channel E can be hermetically communicated with the annular space on the other side of the piston assembly; when oil is added into the rod body, lubricating oil can flow from the channel C to the annular space through the channel B so as to push the piston assembly to move axially and positively; during operation, high-pressure gas can enter the annular space from the passage A to push the piston assembly to move axially and reversely to push lubricating oil to enter the passage B after being filtered by the oil liquid filtering joint, and then the lubricating oil is sprayed into the central passage of the male joint after sequentially passing through the cartridge throttle valve and the atomizing nozzle and enters the interior of the screw motor along with the high-pressure gas to play a lubricating role.
The invention also comprises the following technical characteristics:
specifically, the piston assembly comprises an annular piston, a support ring and a seal ring, wherein the annular piston is sleeved outside the inner pipe and is in contact with the inner wall of the outer pipe; the piston assembly divides the annulus into a cavity F near the male connector and a cavity G near the female connector.
Specifically, the outer wall of the connecting end of the male joint is provided with an annular groove for installing a sealing ring to realize the sealing connection between the male joint and the screw motor or the female joint of the adjacent rod body;
and a sealing ring is arranged between the outer wall of the male joint mounting end and the inner wall of the outer pipe, and a sealing ring is arranged between the inner wall of the male joint mounting end and the outer wall of the inner pipe, so that the channel B and the channel E are in sealed communication with the cavity F, and the central channel of the male joint is in sealed communication with the central channel of the rod body.
Specifically, be equipped with the sealing washer between female joint installation end outer wall and the outer tube inner wall, be equipped with the sealing washer between female joint installation end inner wall and the inner tube outer wall to realize that passageway A and cavity G are sealed to be communicated, and female joint central passage and the sealed intercommunication of body of rod central passage.
Specifically, the outer wall of the throttling ring is tightly attached to the inner wall of a central channel of the female joint, and the inner diameter of the throttling ring is smaller than that of the central channel of the female joint, so that high-pressure gas which is conveyed from the central channel of the non-magnetic drill rod and flows through the central channel of the female joint forms pressure difference on two sides of the throttling ring, and the high-pressure gas enters the cavity G from a channel A arranged in the circumferential direction of the female joint under the action of the pressure difference.
Specifically, the channel E comprises a first channel E close to the male connector connecting end and a second channel E close to the male connector mounting end, the diameter of the first channel E is smaller than that of the second channel E, the first channel E and the second channel E are coaxially communicated, so that an annular limiting table is formed at the joint of the first channel E and the second channel E, a return spring coaxial with the channel E is arranged in the second channel E, and the return spring is limited between the annular limiting table and the valve core.
Specifically, the channel D is arranged on the side wall of the male connector body where the second channel E is located, and the return spring is opposite to the channel D; the lubricating oil flowing to the channel E can push the valve core and compress the return spring to enable the valve core to move to the channel D and block the channel D.
Specifically, after the male joint and the rod body are installed, an annular space is reserved between the end face of the installation end of the male joint and the end part of the annular gap opposite to the end face of the installation end of the male joint, so that the channel B and the channel E can be communicated with the annular gap; after the female joint and the rod body are installed well, an annular space is reserved between the end face of the mounting end of the female joint and the end part of the annular gap opposite to the end face, so that the channel A can be communicated with the annular gap.
Specifically, when two drill rods are used simultaneously, a female joint of a drill rod I and a male joint of a drill rod II are connected, and a sealed annular space H is formed between the female joint of the drill rod I and the male joint of the drill rod II, so that a channel E arranged in the circumferential direction of the male joint of the drill rod II can be communicated with a channel A arranged in the circumferential direction of the female joint of the drill rod I; high-pressure air can enter a cavity G of the drill rod I from a channel D of the drill rod II through the annular space H and a channel A of the drill rod I to push a piston of the drill rod I to move and perform oil injection operation.
Compared with the prior art, the invention has the beneficial technical effects that:
the invention has the function of the traditional drill rod, and can carry lubricating oil to lubricate the screw motor in real time in the drilling construction process.
The drill rod is arranged at the rear end of the air screw motor, and oil mist sprayed by the built-in atomizing nozzle directly enters the screw motor. The drill rod can also adaptively adjust the amount of lubricating oil mist sprayed out of the spray head according to the rotating speed of the motor; provides a new method and a new idea for solving the lubrication problem of the screw motor during the directional drilling construction of the air screw motor.
The invention can also be pre-installed with different numbers of lubricating drill rods according to different designed hole depths, and the drill rods can sequentially spray oil according to the installation sequence to lubricate the screw motor.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a cross-sectional view of the male connector and the rod assembly of the present invention;
FIG. 3 is a sectional view of the female connector and the rod assembly of the present invention;
fig. 4 is a sectional view of two drill pipes in butt joint.
The reference numerals have the meanings given below:
1. the rod body, 2, the male joint, 3, the female joint and 4, the piston assembly;
1-1 part of an inner pipe, 1-2 parts of an outer pipe, 2-1 part of an oil filtering joint, 2-2 parts of a plug-in throttle valve, 2-3 parts of an atomizing nozzle, 2-4 parts of a valve core, 2-5 parts of a return spring, 3-1 parts of a throttle ring, 4-1 parts of a piston, 4-2 parts of a support ring, A, B, C, D, E, F, G, H and H.
The invention is described in detail below with reference to the drawings and the detailed description.
Detailed Description
In view of the defects of the prior art, the invention integrates the experience and achievement of long-term engaged in related specialties, and researches a spray lubrication drill rod through careful research and design, wherein the drill rod is arranged at the rear end of a screw motor, and the oil mist sprayed by a built-in atomizing nozzle can directly enter the screw motor; the spray lubrication drill rod can adaptively adjust the amount of the sprayed lubrication oil mist according to the rotating speed of the screw motor; the problem of lubrication of the screw motor is well solved. The drill rod can be pre-provided with different numbers of lubricating drill rods according to different designed hole depths, and the drill rods can sequentially spray oil according to the installation sequence to lubricate the screw motor.
The present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention fall within the protection scope of the present invention. The present invention will be described in further detail with reference to examples.
Example 1:
as shown in fig. 1 to 3, the present embodiment provides a spray lubrication drill rod, which includes a rod body 1, a male joint 2 and a female joint 3 respectively disposed at two ends of the rod body; the rod body comprises an inner tube 1-1 and an outer tube 1-2, and a piston assembly 4 is arranged in an annular gap between the inner tube 1-1 and the outer tube 1-2.
The female joint 3 comprises a female joint body and a female joint central channel, wherein the female joint body comprises a female joint connecting end, a female joint middle part and a female joint mounting end capable of mounting the rod body 1; the female joint body is provided with a plurality of channels A which are axially arranged and run through two ends of the female joint body; a coaxial throttling ring 3-1 is arranged in the central channel of the female joint.
The male joint 2 comprises a male joint body and a male joint central channel, wherein the male joint body comprises a male joint connecting end, a male joint middle part and a male joint mounting end capable of mounting a rod body; a plurality of axial channels B are arranged on the side wall of the male connector body, the channels B are communicated with the end face of the male connector mounting end and are not communicated with the male connector connecting end, and an oil liquid filter connector 2-1 positioned at the end part of the male connector mounting end is arranged on the channels B; a channel C capable of communicating the channel B with a central channel of the male joint is arranged in the middle of the male joint, and a plug-in throttle valve 2-2 and an atomizing nozzle 2-3 are sequentially arranged in the channel C; the side wall of the male connector body is also provided with a plurality of channels E which are axially communicated with two ends of the male connector body, the middle part of the male connector body is provided with a channel D which can be communicated with the channel E and a central channel of the male connector, a valve core 2-4 which can axially move is arranged in the channel E to seal the channel D, and the channel E is provided with an oil liquid filter joint 2-1 which is positioned at the end part of the mounting end of the male connector.
The channel A can be hermetically communicated with the annular space on one side of the piston assembly 4, and the channel B and the channel E can be hermetically communicated with the annular space on the other side of the piston assembly 4; lubricating oil can flow through the channel B from the channel C to the annular space to push the piston assembly 4 to move axially and forwards, high-pressure gas can enter the annular space from the channel A to push the piston assembly 4 to move axially and reversely to push the lubricating oil to pass through the oil filtering joint 2-1, be filtered, enter the channel B, sequentially pass through the plug-in throttle valve 2-2 and the atomizing nozzle 2-3, be sprayed into the central channel of the male joint, and enter the interior of the screw motor along with the high-pressure gas to play a role in lubrication.
The piston assembly 4 comprises an annular piston 4-1 which is sleeved outside the inner pipe 1-1 and is contacted with the inner wall of the outer pipe 1-2, a support ring 4-2 and a sealing ring which are arranged between the outer wall of the piston 4-1 and the inner wall of the outer pipe 1-2, and a support ring 4-2 and a sealing ring which are arranged between the inner wall of the piston 4-1 and the outer wall of the inner pipe 1-1; the piston assembly 4-1 divides the annulus into a cavity F adjacent the male connector 2 and a cavity G adjacent the female connector 3.
The outer wall of the connecting end of the male joint is provided with an annular groove for installing a sealing ring to realize the sealing connection between the male joint 2 and the screw motor or the female joint 3 of the adjacent rod body 1, and more specifically, in the embodiment, two annular grooves are arranged outside the installing end of the male joint to install two sealing rings to realize better sealing effect; when one drill rod works, the male joint 2 is in sealing connection with the screw motor, when two drill rods work, the male joint of the drill rod II is in sealing connection with the female joint of the drill rod I, and the male joint of the drill rod I is in sealing connection with the screw motor; and a sealing ring is arranged between the outer wall of the male joint mounting end and the inner wall of the outer pipe 1-2, and a sealing ring is arranged between the inner wall of the male joint mounting end and the outer wall of the inner pipe 1-1 so as to realize the sealing communication of the channel B and the channel E with the cavity F and the sealing communication of the male joint central channel with the rod body central channel.
A sealing ring is arranged between the outer wall of the mounting end of the female joint and the inner wall of the outer pipe 1-2, and a sealing ring is arranged between the inner wall of the mounting end of the female joint and the outer wall of the inner pipe 1-1, so that the channel A is in sealed communication with the cavity G, and the central channel of the female joint is in sealed communication with the central channel of the rod body.
The outer wall of the throttling ring 3-1 is tightly attached to the inner wall of the central channel of the female joint, and the inner diameter of the throttling ring 3-1 is smaller than that of the central channel of the female joint, so that high-pressure gas which is conveyed from the central channel of the non-magnetic drill rod and flows through the central channel of the female joint forms pressure difference on two sides of the throttling ring 3-1, and the high-pressure gas enters the cavity G from a channel A arranged in the circumferential direction of the female joint 3 under the action of the pressure difference. More specifically, in the present embodiment, the throttle ring 3-1 is screwed and fixed to the box 3.
The passage E comprises a first passage E close to the male connector connecting end and a second passage E close to the male connector mounting end, the diameter of the first passage E is smaller than that of the second passage E, the first passage E and the second passage E are coaxially communicated, so that an annular limiting table is formed at the joint of the first passage E and the second passage E, a return spring 2-5 coaxial with the passage E is arranged in the second passage E, and the return spring 2-5 is limited between the annular limiting table and the valve core 2-4.
The channel D is arranged on the side wall of the male connector body where the second channel E is located, and the return springs 2-5 are opposite to the channel D; the lubricating oil flowing to the channel E can push the valve core 2-4 and compress the return spring 2-5 to enable the valve core 2-4 to move to the channel D and block the channel D.
After the male joint 2 and the rod body 1 are installed, an annular space is reserved between the end face of the mounting end of the male joint and the end part of the annular gap opposite to the end face, so that the channel B and the channel E can be communicated with the annular gap; after the female joint 3 and the rod body 1 are installed, an annular space is reserved between the end face of the mounting end of the female joint and the end part of the annular gap opposite to the end face, so that the channel A can be communicated with the annular gap.
When two drill rods are used simultaneously, the female joint of the drill rod I and the male joint of the drill rod II are connected, and a sealed annular space H is formed between the female joint of the drill rod I and the male joint of the drill rod II, so that a channel E arranged in the circumferential direction of the male joint of the drill rod II can be communicated with a channel A arranged in the circumferential direction of the female joint of the drill rod I; high-pressure air can enter a cavity G of the drill rod I from a channel D of the drill rod II through the annular space H and a channel A of the drill rod I to push a piston of the drill rod I to move and perform oil injection operation.
When one drill rod works, the connecting end of the male joint is connected with the screw motor, and the connecting end of the female joint is connected with the non-magnetic drill rod. The working principle of one drill rod is as follows:
(1.1) when a screw motor (air screw motor) is directionally drilled in a planned construction hole depth, and lubricating oil carried by one spray lubrication drill rod can meet the lubricating requirement of the screw motor, as shown in figure 1, firstly, a plug-in throttle valve on a male joint of the spray lubrication drill rod is taken out, the lubricating oil is injected into a drill rod cavity F through a channel B by an oil pump, a piston assembly moves to the right under the action of oil pressure, and after the piston assembly moves to the rightmost position and the cavity F is filled with the lubricating oil, the plug-in throttle valve is installed back to the original position; then the left end of the drill rod is connected with the tail end of the screw motor through the reducing joint, and the right end of the drill rod is connected with the non-magnetic drill rod through the reducing joint, so that a common drill rod can be installed to conduct normal air screw motor directional drilling construction.
(1.2) during directional drilling construction, high-pressure gas from the conveying of drilling rod center passageway, high-speed through the restrictor ring, can form the pressure differential in this restrictor ring both sides, high-pressure gas can get into cavity G from the passageway A that the box joint circumferencial direction set up under the effect of this pressure differential, piston assembly can move compression cavity F left under high-pressure gas's promotion, lubricating oil in the cavity F gets into passageway B and loops through cartridge choke valve and atomizer after passing through the filtration of fluid filter joint under the effect of pressure, spout drilling center passageway, and inside the high-pressure gas entering screw motor, play the lubrication action. The flow of the oil sprayed by the atomizing nozzle under certain working pressure can be adjusted by adjusting the opening of the plug-in throttle valve. Meanwhile, a part of lubricating oil pushes the valve core to move leftwards through the channel to block the air inlet channel D and compress the return spring.
(II) when two drilling rods (drilling rod I and drilling rod II) during operation, the male joint link of drilling rod I connects the screw motor, and the male joint link of drilling rod II is connected to the female joint link of drilling rod I, and the no magnetism drilling rod is connected to the female joint link of drilling rod II. The working principle of the two drill rods is as follows:
and (2.1) when the planned construction hole depth of the air screw motor directional drilling is deeper, and lubricating oil carried by one spray lubrication drill rod cannot meet the lubricating requirement of the motor, two drill rods are required to be in butt joint for use. As shown in fig. 4, firstly, lubricating oil is filled into two drill rods by the same method as that of a single drill rod, then the drill rod I and the drill rod ii are butted end to end, and the outer wall sealing ring at the male joint connecting end of the drill rod ii can form sealing between the two drill rods. And then, connecting the male joint of the drill rod I with the tail end of the screw motor through the reducing joint, and connecting the female joint of the drill rod II with the non-magnetic drill rod through the reducing joint, so that the common drill rod can be installed to carry out normal air screw motor directional drilling construction.
(2.2) during directional drilling construction, the high-pressure gas who comes is carried from the through-hole in the drilling rod, high-speed through two restrictor rings, can form the pressure differential in this restrictor ring both sides, high-pressure gas can get into cavity G from inlet channel A that drilling rod II box joint circumferencial direction set up under the effect of this pressure differential, piston assembly in drilling rod II can move left compression cavity F under high-pressure gas's promotion, lubricating oil in the cavity F gets into passageway B and loops through cartridge choke valve and atomizer after passing through fluid filter joint's filtration under the effect of pressure, spout drilling center passageway, and inside along with high-pressure gas gets into the screw motor, play the lubrication action. Similarly, the flow of the oil sprayed by the atomizing nozzle under certain working pressure can be adjusted by adjusting the opening of the plug-in throttle valve. Meanwhile, a part of lubricating oil pushes the valve core to move leftwards through the channel to block the air inlet channel D and compress the return spring. Because the air inlet channel E arranged on the female joint of the drill rod I is blocked, no high-pressure gas enters the drill rod I, and therefore the drill rod I does not spray oil temporarily.
And (2.3) when the piston assembly of the drill rod II moves to the tail end, the oil in the cavity F is completely sprayed out, the pressure is reduced, and the valve core slides rightwards under the action of the return spring. At the moment, the air inlet channel D is opened, high-pressure gas sequentially enters the drill rod I through the air inlet channel D and the air inlet channel E, the piston assembly in the drill rod I is pushed to move, and oil is sprayed to the drill rod I.
And (III) the drill rod can adaptively adjust the sprayed lubricating oil mist amount according to the rotating speed of the screw motor, and the principle is as follows:
when the air screw motor is in directional drilling construction, the rotating speed of the screw motor is mainly determined by the flow of high-pressure air supplied by an orifice, when the flow is increased, the rotating speed of the motor is correspondingly increased, meanwhile, the air flow rate in a drill rod is also increased, the pressure difference generated at the two ends of a throttling ring is also correspondingly increased, the driving force applied to a piston assembly is increased, and more lubricating oil can be passed through from the two ends of a plug-in throttling valve in unit time to fully lubricate the screw motor. When the rotating speed of the motor is reduced, the conditions are just opposite, the pressure difference generated at the two ends of the throttle ring is reduced, the driving force applied to the piston assembly is reduced, and the amount of lubricating oil passing through the two ends of the plug-in throttle valve in unit time is correspondingly reduced.
Claims (9)
1. A spray lubrication drill rod is characterized by comprising a rod body (1), a male joint (2) and a female joint (3), wherein the male joint and the female joint are respectively arranged at two ends of the rod body (1); the rod body comprises an inner tube (1-1) and an outer tube (1-2), and a piston assembly (4) is arranged in an annular gap between the inner tube (1-1) and the outer tube (1-2);
the female joint (3) comprises a female joint body and a female joint central channel, wherein the female joint body comprises a female joint connecting end, a female joint middle part and a female joint mounting end capable of mounting the rod body (1); the female joint body is provided with a plurality of channels A which are axially arranged and run through two ends of the female joint body; a coaxial throttling ring (3-1) is arranged in the central channel of the female joint;
the male connector (2) comprises a male connector body and a male connector central channel, wherein the male connector body comprises a male connector connecting end, a male connector middle part and a male connector mounting end capable of mounting the rod body (1); a plurality of axial channels B are arranged on the side wall of the male connector body, the channels B are communicated with the end face of the male connector mounting end and are not communicated with the male connector connecting end, and an oil liquid filter connector (2-1) positioned at the end part of the male connector mounting end is arranged on the channels B; a channel C capable of communicating the channel B with a central channel of the male joint is arranged in the middle of the male joint, and a plug-in throttle valve (2-2) and an atomizing nozzle (2-3) are sequentially arranged in the channel C; the side wall of the male connector body is also provided with a plurality of channels E which are axially communicated with two ends of the male connector body, the middle part of the male connector body is provided with a channel D which can communicate the channel E with a central channel of the male connector, the channel E is internally provided with a valve core (2-4) which can axially move to block the channel D, the channel E is step-shaped, a reset spring (2-5) is arranged between the step and the valve core (2-4), and the channel E is provided with an oil liquid filtering connector (2-1) which is positioned at the end part of the mounting end of the male connector;
the channel A can be hermetically communicated with an annular gap on one side of the piston assembly (4), and the channel B and the channel E can be hermetically communicated with an annular gap on the other side of the piston assembly (4); when oil is added into the rod body, lubricating oil can flow from the channel C to the annular space through the channel B so as to push the piston assembly (4) to move axially and positively; during operation, high-pressure gas can enter the annular space from the passage A to push the piston assembly (4) to move axially and reversely to push lubricating oil to enter the passage B after being filtered by the oil liquid filtering joint (2-1), and then the lubricating oil is sprayed into the central passage of the male joint after passing through the plug-in throttle valve (2-2) and the atomizing nozzle (2-3) in sequence and enters the interior of the screw motor along with the high-pressure gas to play a role in lubrication.
2. The spray lubrication drill rod as claimed in claim 1, wherein the piston assembly (4) comprises an annular piston (4-1) which is sleeved outside the inner tube (1-1) and is in contact with the inner wall of the outer tube (1-2), a support ring (4-2) and a seal ring which are arranged between the outer wall of the piston (4-1) and the inner wall of the outer tube (1-2), and a support ring (4-2) and a seal ring which are arranged between the inner wall of the piston (4-1) and the outer wall of the inner tube (1-1); the piston assembly (4-1) divides the annulus into a cavity F near the male connector (2) and a cavity G near the female connector (3).
3. The spray lubrication drill rod as claimed in claim 2, wherein the outer wall of the male joint connecting end is provided with an annular groove for installing a sealing ring to realize the sealing connection of the male joint (2) and the female joint (3) of the screw motor or the adjacent rod body (1);
and a sealing ring is arranged between the outer wall of the male joint mounting end and the inner wall of the outer pipe (1-2), and a sealing ring is arranged between the inner wall of the male joint mounting end and the outer wall of the inner pipe (1-1) so as to realize the sealing communication of the channel B and the channel E with the cavity F and the sealing communication of the male joint central channel with the rod body central channel.
4. The spray lubrication drill rod as claimed in claim 2, wherein a sealing ring is arranged between the outer wall of the female joint mounting end and the inner wall of the outer pipe (1-2), a sealing ring is arranged between the inner wall of the female joint mounting end and the outer wall of the inner pipe (1-1) so as to realize that the channel A is in sealed communication with the cavity G, and the female joint central channel is in sealed communication with the rod body central channel.
5. The spray lubrication drill pipe as recited in claim 2, characterized in that the outer wall of the throttle ring (3-1) is tightly attached to the inner wall of the central passage of the female joint, and the inner diameter of the throttle ring (3-1) is smaller than that of the central passage of the female joint, so that the high-pressure gas delivered from the central passage of the nonmagnetic drill pipe and flowing through the central passage of the female joint forms a pressure difference on both sides of the throttle ring (3-1), and the high-pressure gas enters the cavity G from the passage A arranged in the circumferential direction of the female joint (3) under the action of the pressure difference.
6. The spray lubrication drill pipe according to claim 1, wherein the channel E comprises a first channel E close to the connecting end of the male joint and a second channel E close to the mounting end of the male joint, the diameter of the first channel E is smaller than that of the second channel E, the first channel E and the second channel E are coaxially communicated, so that an annular limiting table is formed at the joint of the first channel E and the second channel E, a return spring (2-5) coaxial with the channel E is arranged in the second channel E, and the return spring (2-5) is limited between the annular limiting table and the valve core (2-4).
7. The spray lubrication drill rod according to claim 6, wherein the channel D is arranged on the side wall of the male joint body where the second channel E is arranged, and the return spring (2-5) is opposite to the channel D; the lubricating oil flowing to the channel E can push the valve core (2-4) and compress the return spring (2-5) to enable the valve core (2-4) to move to the channel D and block the channel D.
8. The spray lubrication drill rod as claimed in claim 1, wherein after the male connector (2) and the rod body (1) are installed, an annular space is reserved between the end surface of the installation end of the male connector and the end part of the annular gap opposite to the end surface of the installation end of the male connector, so that the channel B and the channel E can be communicated with the annular gap; after the female joint (3) and the rod body (1) are installed, an annular space is reserved between the end face of the mounting end of the female joint and the end part of the annular gap opposite to the end face, so that the channel A can be communicated with the annular gap.
9. The spray lubricated drill pipe according to claim 1, wherein when two drill pipes are used simultaneously, the female joint of the drill pipe I and the male joint of the drill pipe II are connected, and a sealed annular space H is formed between the female joint of the drill pipe I and the male joint of the drill pipe II, so that a channel E arranged circumferentially of the male joint of the drill pipe II can be communicated with a channel A arranged circumferentially of the female joint of the drill pipe I; high-pressure air can enter a cavity G of the drill rod I from a channel D of the drill rod II through the annular space H and a channel A of the drill rod I to push a piston of the drill rod I to move and perform oil injection operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011161268.5A CN112377090B (en) | 2020-10-27 | 2020-10-27 | Spray lubrication drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011161268.5A CN112377090B (en) | 2020-10-27 | 2020-10-27 | Spray lubrication drill rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112377090A true CN112377090A (en) | 2021-02-19 |
| CN112377090B CN112377090B (en) | 2022-05-10 |
Family
ID=74576982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011161268.5A Active CN112377090B (en) | 2020-10-27 | 2020-10-27 | Spray lubrication drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112377090B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113445903A (en) * | 2021-08-11 | 2021-09-28 | 中煤科工集团重庆研究院有限公司 | Self-closing double-oil-passage drill rod connecting structure |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2023848C1 (en) * | 1991-03-07 | 1994-11-30 | Иоанесян Юрий Роленович | Bottom hole engine lubrication protection system |
| RU2026480C1 (en) * | 1990-09-26 | 1995-01-09 | Сорокин Анатолий Егорович | Downhole air hammer |
| DE19704958A1 (en) * | 1997-02-10 | 1998-08-20 | Krupp Bautechnik Gmbh | Grease feed device for construction machines, in particular hydraulically operated striking mechanisms and demolition tongs |
| CN2467864Y (en) * | 2000-12-29 | 2001-12-26 | 徐顺国 | Integrated pneumatic oil supply centralized lubricating system |
| TWM262642U (en) * | 2004-09-17 | 2005-04-21 | Ruei-Dian You | Improved lubricant spraying device |
| US20130020132A1 (en) * | 2011-07-20 | 2013-01-24 | Baker Hughes Incorporated | Downhole Motors with a Lubricating Unit for Lubricating the Stator and Rotor |
| CN203963466U (en) * | 2014-05-22 | 2014-11-26 | 禾颖企业有限公司 | The pneumatic tool of autologous oiling |
| CN204024463U (en) * | 2014-08-27 | 2014-12-17 | 中国石油集团川庆钻探工程有限公司 | A kind of double acting being applicable to gas drilling mud motor is calmed the anger power sub |
| CN204026103U (en) * | 2014-09-11 | 2014-12-17 | 宁波盛润和机械科技有限公司 | A kind of automatic lubricator |
| CN105317372A (en) * | 2014-08-02 | 2016-02-10 | 江苏贵鑫石油装备有限公司 | One-way bypass screw drilling tool |
| CN109989712A (en) * | 2019-04-18 | 2019-07-09 | 中煤科工集团西安研究院有限公司 | Underground coal mine air guided drilling aperture cooling lubricating system and method |
| CN111577177A (en) * | 2020-04-22 | 2020-08-25 | 中煤科工集团西安研究院有限公司 | Drilling device and drilling method for discharging slag by underground pneumatic impact crushed rock foam |
| CN111691818A (en) * | 2020-05-07 | 2020-09-22 | 中煤科工集团西安研究院有限公司 | Underground coal mine pneumatic directional drilling lubricating device and pneumatic screw drill |
-
2020
- 2020-10-27 CN CN202011161268.5A patent/CN112377090B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2026480C1 (en) * | 1990-09-26 | 1995-01-09 | Сорокин Анатолий Егорович | Downhole air hammer |
| RU2023848C1 (en) * | 1991-03-07 | 1994-11-30 | Иоанесян Юрий Роленович | Bottom hole engine lubrication protection system |
| DE19704958A1 (en) * | 1997-02-10 | 1998-08-20 | Krupp Bautechnik Gmbh | Grease feed device for construction machines, in particular hydraulically operated striking mechanisms and demolition tongs |
| CN2467864Y (en) * | 2000-12-29 | 2001-12-26 | 徐顺国 | Integrated pneumatic oil supply centralized lubricating system |
| TWM262642U (en) * | 2004-09-17 | 2005-04-21 | Ruei-Dian You | Improved lubricant spraying device |
| US20130020132A1 (en) * | 2011-07-20 | 2013-01-24 | Baker Hughes Incorporated | Downhole Motors with a Lubricating Unit for Lubricating the Stator and Rotor |
| CN203963466U (en) * | 2014-05-22 | 2014-11-26 | 禾颖企业有限公司 | The pneumatic tool of autologous oiling |
| CN105317372A (en) * | 2014-08-02 | 2016-02-10 | 江苏贵鑫石油装备有限公司 | One-way bypass screw drilling tool |
| CN204024463U (en) * | 2014-08-27 | 2014-12-17 | 中国石油集团川庆钻探工程有限公司 | A kind of double acting being applicable to gas drilling mud motor is calmed the anger power sub |
| CN204026103U (en) * | 2014-09-11 | 2014-12-17 | 宁波盛润和机械科技有限公司 | A kind of automatic lubricator |
| CN109989712A (en) * | 2019-04-18 | 2019-07-09 | 中煤科工集团西安研究院有限公司 | Underground coal mine air guided drilling aperture cooling lubricating system and method |
| CN111577177A (en) * | 2020-04-22 | 2020-08-25 | 中煤科工集团西安研究院有限公司 | Drilling device and drilling method for discharging slag by underground pneumatic impact crushed rock foam |
| CN111691818A (en) * | 2020-05-07 | 2020-09-22 | 中煤科工集团西安研究院有限公司 | Underground coal mine pneumatic directional drilling lubricating device and pneumatic screw drill |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113445903A (en) * | 2021-08-11 | 2021-09-28 | 中煤科工集团重庆研究院有限公司 | Self-closing double-oil-passage drill rod connecting structure |
| CN113445903B (en) * | 2021-08-11 | 2023-09-19 | 中煤科工集团重庆研究院有限公司 | Self-closing double-oil-duct drill rod connecting structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112377090B (en) | 2022-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112377090B (en) | Spray lubrication drill rod | |
| CN104246122A (en) | Flow control device and method | |
| CN206376822U (en) | A kind of well cementation sliding sleeve | |
| CN102619469A (en) | Device for hole drilling, seam cutting and pressure relief of coal seam | |
| CN202520224U (en) | Coal seam drilling, seam cutting and pressure releasing device | |
| CN106437585A (en) | Portable sand pumping device and process using double-layer continuous oil pipe | |
| CN106014336A (en) | Intelligent switch sliding sleeve based on electrohydraulic control | |
| CN102116154B (en) | Built-in spraying water channel in road header | |
| CN105570580B (en) | A kind of pair of medium chicksan | |
| CN112012698B (en) | Device and method for pumping accumulated water in underground hole of coal mine | |
| CN103659452B (en) | A kind of intermittent type automatic circulation lubricating system | |
| CN216430819U (en) | Bidirectional telescopic self-balancing rotary pipe joint and pipe manifold device thereof | |
| CN206246047U (en) | High frequency double acting hydraulical impact device | |
| CN115628055A (en) | Low gas permeability coal seam fracturing anti-reflection gas drainage device | |
| CN111691818B (en) | Underground coal mine pneumatic directional drilling lubricating device and pneumatic screw drill | |
| CN210598931U (en) | Switch type sand control screen pipe capable of controlling oil layer liquid to flow into sand control pipe | |
| CN103062430B (en) | Rotary fluid control valve | |
| RU2506410C1 (en) | Automatic valve unit | |
| CN202708228U (en) | High-pressure proportional reducing valve for mining | |
| CN216043636U (en) | Pilot valve | |
| CN105672883A (en) | Speed-increasing tool and speed-increasing method used for well drilling | |
| CN210460587U (en) | Temporary blocking valve in pipe | |
| CN205402022U (en) | Two media high pressure rotary joint | |
| CN203516028U (en) | Fireflood oil well pump | |
| CN216277827U (en) | Fixed plug-in positive circulation negative pressure drainage and mining tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |