WO2014069947A1

WO2014069947A1 - Punching device using water hammer

Info

Publication number: WO2014069947A1
Application number: PCT/KR2013/009867
Authority: WO
Inventors: 인석신
Original assignee: In Suk Shin
Priority date: 2012-11-01
Filing date: 2013-11-01
Publication date: 2014-05-08

Abstract

A punching device using a water pump according to the present invention comprises: a punching base body having a driving portion; a head portion which is guided by a lead installed on the punching base body and is provided with a driving shaft having a hollow interior; drive rods which are coupled to the driving shaft of the head portion so as to move up and down with the head portion, and on the end portions of which a water hammer is installed for punching; accumulators which are installed between the drive rods and have a gas storage portion in which gas that is supplied with water is separated and stored; and a pumping unit, which is connected to the driving shaft or the drive rods, for adding gas to water and pumping the water into which air is added through the hollow interior of the driving shaft or rod hollow portions of the drive rods, so as to drive the water hammer and supply gas to the gas storage portion.

Description

Drilling device using water hammer

The present invention relates to a perforation device, and more particularly, in order to perforate underground deep holes, the gas is supplied to the water separation unit by supplying water to which the accumulator is separated and the drive rod in which the water pump is installed. It relates to a drilling device capable of driving a water pump using.

In general, the drilling machine for drilling deep holes drilled from the ground to the ground for drilling, soil inspection, groundwater development, etc., there is a method of rotating the bit, and a method of rotating the bit or ball cutter and hitting it.

Republic of Korea Patent No. 10-0372049 discloses an example of a perforator. The perforator disclosed has an excavation unit having drive rods connected in a longitudinal direction to each other, and a drive rod of the shortest of the drive rods, the hammer being hydraulically actuated.

The perforator forms a separate hydraulic line on the drive rod to operate the hammer and rotate the excavation unit. The excavated soil is mixed with water by supplying fluid pumped by the pump, ie, water, to the excavation unit through the drive rod, and discharged through the inner circumferential surface of the drilled hole and the outer circumferential surface of the drive rod.

In this process, since the bit must be supplied with water at a relatively high pressure, a reciprocating pump, a flanger pump or a piston pump, is used as a pump for pumping the fluid.

Water supplied by such a reciprocating pump inevitably generates a pulsating pressure. In addition, since the perforator operated by the fluid supplied in this way has a structure that strikes the beat periodically, the discharged water also generates a pulsating pressure.

The pulsating pressure of such a fluid makes it difficult to continuously supply water, which is a fluid, when drilling the deep hole, and the operation of an excavation unit for drilling such as a water pump and the excavation of excavated soil are difficult to discharge.

In order to solve the above problems, a gas chamber of a back head is provided on an excavation unit operated by a fluid supplied through the drive rods, that is, a piston upper end side of a hammer, and a piston is injected into the gas chamber of the back head. The structure to increase the impact force when the descent is posted. When the back head gas chamber is provided on the upper end side of the piston as described above, the gas filling pressure in the gas chamber has to be increased as the depth of drilling deepens. That is, as the depth of the perforation deepens, the groundwater pressure in the ground and the pressure of the fluid supplied from the pump become relatively high, so the pressure of the back head gas chamber must be increased. If the pressure in the back head gas chamber is not sufficiently increased, the impact force of the piston of the hammer rapidly decreases as the depth of drilling deepens.

In view of these problems, a perforator has been proposed in which the impact force of the bit is increased by the piston of the hammer. The perforator has a structure that installs a spring that is compressed when the piston is raised and increases the impact force applied to the bit when the piston is lowered by the compression force of the spring. However, the impact force caused by the spring has a problem that the impact force due to the spring's elastic force is also reduced because the water pressure of the groundwater increases as the depth of drilling increases.

On the other hand, in the hammer operated as described above, the water to provide the impact force and the discharged water is discharged together with the soil through between the inner circumferential surface of the perforated hole and the outer circumferential surface of the drive rods, the pulsation pressure generated by the driving of the hammer is instantaneously As other inertia forces in the flow cannot be increased, the water is not discharged smoothly. In addition, the generation of the pulsating pressure of the discharged water continuously gives a relatively large impact to the pump and the device for drilling, so that the damage of the pump and the drilling device is relatively large.

In order to solve the problems described above, the present inventor has applied for an accumulator and a perforator using the same (Korean Patent Registration No. 0624330). The published accumulator has a chamber forming portion in one of the drive rods in which the hammer is installed, and has a configuration in which air contained in the water is separated and positioned inside the chamber forming portion.

Accumulators with this configuration have a relatively small volume due to the compression of air in the chamber forming portion as the depth of the perforation deepens, and it is dissolved in water and the inflow of air through the drive rod is relatively small, thus limiting the performance of a complete accumulator. There is. In particular, as the depth of drilling increases, the pressure of the discharged water or groundwater is increased and the hammer is operated. Thus, the function of the accumulator is weakened.

The present invention is to solve the problems as described above, the water pumped by the pumping unit by supplying air as a gas to the pumping unit for pumping the water which is the working fluid in the rod hollow portion of the drive rod to drive the water hammer The purpose is to provide a fabric mill using a water pump that can increase the amount of gas piggybacked on.

Another object of the present invention is to separate the gas formed in the water by using an accumulator which is a water separation unit connected to the drive rod, by using the separated compressor body can reduce the pulsating pressure of the water generated during operation of the water hammer, hammer The striking force is to provide a fabric mill using a water pump that can be improved.

The drilling machine using the water pump of the present invention for achieving the above object is coupled to the head and the drive shaft having a drilling base body having a drive unit, the head is provided by a lead installed in the drilling base body and has a drive shaft having a hollow; An accumulator having drive rods which are elevated as heads and provided with water hammers for drilling at ends, gas accumulators which are installed between the drive rods and supplied with water, and are stored separately; It is provided with a pumping unit connected to the rod to ride the gas to the water to drive the water hammer by pumping the water piggybacked through the hollow of the drive shaft or the rod hollow of the drive rod and supplying gas to the gas storage unit It is characterized by.

In the present invention, the accumulator is provided with a tubular first body having a hollow portion, a first coupling member provided at an upper portion of the first body and formed with an inlet for water, and installed at a lower end of the first body so that water flows out. A second coupling member having an outlet, and an upper end is fixed to communicate with the inlet of the first coupling member, extending toward the second coupling member to partition the hollow portion of the first body in the longitudinal direction to form a gas storage portion At least one discharge hole for separating water and air by discharging the water in the radial direction on the side includes a first inner tube.

An end portion of the first inner tube is coupled to an outlet of the second coupling member, and water introduced through the first inner tube is discharged through the discharge hole in the first inner tube adjacent to the second coupling member. Blocking member to be installed is provided, the lower inner side of the first inner tube is formed with at least one inlet hole for the water discharged from the discharge hole to enter the outlet.

The pumping unit includes a cylinder portion, a pump housing in communication with the cylinder portion, the first suction portion and the first discharge portion, a piston installed in the cylinder portion to reciprocate to suck and discharge water, and the first A first check valve installed at the suction part and opened when the piston is retracted and closed when moving forward, a second check valve installed at the first discharge part and opened when the piston is moved forward and closed when retracting, and installed at the pump housing to the cylinder and the piston. It is provided with a gas supply unit for supplying gas to the auxiliary cylinder in order to piggyback the gas to the pumped water.

The pump housing further includes an auxiliary cylinder portion in communication with the cylinder portion, wherein the gas supply portion is provided with a gas supply portion in communication with the auxiliary cylinder portion of the pump housing, and is installed at the gas supply portion when the water is sucked by the piston and moves forward of the piston. And a third check valve that closes when the water is discharged.

As the fabric mill using the water pump of the present invention can supply the air, which is gas, to the accumulator connected to the drive rod through the drive rod, the pressure is increased by the drilling depth, and the pulsation force and the impact force of the water hammer are driven. It is possible to increase the gas supply amount, that is, the pressure of the gas, in the accumulator to increase the pressure.

1 is a side view of a drilling device according to the present invention;

Figure 2 is a side cross-sectional view showing the main portion of the drilling device according to the present invention,

3 is an exploded perspective view of the accumulator shown in FIG. 2;

4 is a cross-sectional view of the accumulator shown in FIG. 3;

5 is a sectional view of a pumping unit according to the present invention;

6 is an enlarged cross-sectional view showing the check valve shown in FIG.

One embodiment of the present invention relates to a drilling device using a water pump for drilling deep holes in the basement according to the present invention.

Referring to the drawings, a water pump apparatus 10 for a perforator of a water pump according to the present invention is guided by a lead 12 supported by a perforated base body 11 having a drive unit and has a hollow shaft (not shown). The head part 15 which has () is provided. The drive shaft 14 of the head portion 15 is driven by a hydraulic motor installed in the head portion 15. The upper end side of the drive rods 20 having the rod hollow portion 21 are connected to the drive shaft 14 of the head portion 15 in the longitudinal direction. On the lower end side of the drive rods 20 connected in the longitudinal direction, a water hammer 30 driven by a fluid supplied through the rod hollow portion 21 of the drive rods 20 connected to each other, that is, water, is installed. And the pulsation according to the operation of the water pump 30 while acting as a drive rod 20 between the water hammer 30 and the adjacent drive rod 20 or between the drive rod 20 and the water hammer 30 And as the depth of the hole to be drilled deeper, the accumulator 40 is installed to reduce the load acting on the water hammer 30 due to the water pressure of the groundwater and the like, and to prevent the fall of the impact force. The accumulator 40 may be provided in plurality between the drive rods 20 or between the drive rods 20 and the water hammer.

In addition, the fabric mill according to the present invention is a pumping unit for pumping gas, that is, water piggybacked through air, through the hollow portion of the drive shaft 14 of the head portion 15 or the rod hollow portion 21 of the drive rod 20. (70).

The accumulator 40 is connected to the drive rod 20, as shown in FIGS. 2, 3, and 4, serves as the drive rod 20, and simultaneously absorbs pulsating pressure. In order to prevent the operating force of the lowering, the tubular first body 42 having a hollow portion 41, and is fixed to the upper portion of the first body 42 is formed with a water inlet 43a A second coupling member 44 having a first coupling member 43, a first outlet 44a installed at a lower end of the first body 42, through which water flows out, and the first coupling member 43; The upper end portion is fixed to the inner portion of the first body 42 in the longitudinal direction to form a gas storage portion 45 and has a first inner tube 46 forming a water supply passage. The water supply passage of the first inner pipe 46 to supply the water supplied through the rod hollow portion 21 of the drive rod 20 to the rod hollow portion or water hammer 30 of the drive rod coupled to the lower side It is a passage for.

On the other hand, the first inner tube 46 located in the hollow portion 41 of the first body 42 has a diameter relatively smaller than the diameter of the hollow portion 41 of the first body 42, the upper end portion Is combined with the first inlet 43a of the first coupling member 43 to form the gas storage part 45 by partitioning the hollow part 41. The lower end of the fixed first inner tube 46 as described above is separated from the gas supplied through the first inner tube 46 gas separation unit 50 to be stored in the gas storage unit 45 It is further provided. The radiator 50 is provided with a blocking member 51 for blocking water flowing through the first inner tube 46 at an end shaft of the first inner tube 46 and adjacent to the blocking member 51. The upper portion of the first inner tube 46 is the water flowing through the first inner tube 46 in a radial direction corresponding to the gas storage portion 45, that is, the outer peripheral surface of the first inner tube 46 and the first Outflow holes 52 are formed to discharge water between the inner circumferential surfaces of the main body 42 so that the gas contained in the water is separated and stored in the gas storage part 45, and the lower side on which the blocking member 51 is installed. The first inner tube 46 of the inlet hole 53 for discharging the water supplied from the outlet hole 52 to the gas storage unit 45 to the first outlet (44a) side is formed.

Although not shown in the figure, the water separator is an end hole of the first pipe member 46 is blocked and the outflow hole for supplying the water supplied by the gas is piggybacked through the first pipe member 46 on the outer peripheral surface thereof Can be formed.

On the other hand, in the accumulator 40, the first coupling member 43 is formed at the end, that is, the outer peripheral surface exposed from the first body is formed with a tapered male thread, the first outlet of the second coupling member 44 The inner circumferential surface of the tapered female screw portion is formed so that the first coupling member of the drive rod to be connected is formed. The accumulator 40 is not limited to the above-described embodiment, and separates and stores the gas piggybacked in water, and in addition to the water for driving the pressure of the stored gas to the water or the water hammer 30 supplied through the drive rod. Any structure can be used as long as it can act.

As shown in FIG. 5, the pumping unit 70 is connected to the drive shaft 14 or the drive rod 20 of the head portion 15 so as to provide air to the rod hollow portion 21 of the drive rod 20. The pump housing 75 for pumping the water that is piggybacked, the cylinder portion 71, the first housing portion 72 and the first discharge portion 73 in communication with the cylinder portion 71, It is provided with a piston 76 reciprocally installed in the cylinder portion 71 to suck and discharge water, and a piston driving portion 90 for moving the piston 74 forward and backward in the cylinder portion 71. The pump housing may be provided with a plurality of pistons and cylinders.

The piston drive unit 90 is provided with a connecting rod connecting the crankshaft and the piston in order to convert the rotational force of the crankshaft and the crankshaft driven by the engine or the motor into a linear reciprocating motion.

The first suction valve 72 is provided with a first check valve 77 that opens when the piston is retracted and closes when moving forward, and is installed on the first discharge part 73 that opens when the piston 76 moves forward and closes when retracting. A second check valve 78 is provided. In addition, the pump housing 75 is provided with a gas supply unit 85 that supplies gas to the auxiliary cylinder unit 80 to piggyback the gas on the water pumped by the cylinder unit 71 and the piston 76. Here, the auxiliary cylinder portion 80 provided in the pump housing 75 is preferably in communication with the cylinder portion 71 and formed to extend in an upper side direction of the cylinder portion 71, wherein the first suction portion ( 72 is preferably installed in the lower pump housing 75 of the auxiliary cylinder portion 80, the first discharge portion 73 is the upper pump housing 75 of the auxiliary cylinder portion 80 extending to the upper side. ) Is preferable. This is to prevent the gas supplied through the gas supply unit 85 from flowing into the cylinder portion 71 for compression.

And the volume of the auxiliary cylinder portion 80 is preferably formed to be greater than or equal to the volume for pumping water by the cylinder portion and the piston.

On the other hand, the gas supply unit 85 is provided with a third check valve (86) for preventing water from flowing back through the gas supply unit when the piston advances reciprocating the cylinder portion (71). The gas supply unit 85 is connected by an air compressor 100 for compressing air, which is a gas, and the air compressor and the gas supply pipe 101 to continuously receive gas.

Although the first suction part 72 of the pumping unit 70 is not shown in the drawing, the first suction part 72 is connected by a water tank and a water supply pipe 72a to continuously receive water, and the first discharge part 73 ) Is connected to the rotary joint provided on the drive shaft 14 of the head portion 15 by a connecting tube (73a). The water discharged through the first discharge portion 73 is supplied to the rod hollow portion 21 of the drive rod 20 through the hollow of the drive shaft 14 in a state where the air, which is gas, is piggybacked.

As shown in FIGS. 5 and 6, the first check valve 77 includes a valve housing 77b provided with a valve seat 77a installed at the first suction part 72 of the pump housing, and the valve housing. The valve member (77c) is slidably installed in the 77b) and is provided between the valve member (77c) and the valve member (77c) and the valve housing (77b) to control the supply of water in contact with the valve seat (77a). 77c is provided with a spring 77d which elastically biases in the closing direction when the piston 76 moving along the cylinder portion 71 is moved forward. The second and

third check valves

78 and 86 are substantially similar in configuration to the first check valve 77, and the valve members constituting the second and

third check valves

78 and 86 are closed. The direction may vary depending on the operating state of the piston 76 reciprocating along the cylinder portion 71 as described above.

Referring to the drawings the operation of the drilling device using a water hammer according to the present invention configured as described above is as follows.

First, in order to perform the drilling operation, the drive rods 20 of the drilling machine are coupled, and the accumulator 40 is installed between the drive rod 20 and the water hammer 30 having the bits. A plurality of accumulators 40 may be installed between the drive rods 20 depending on the depth of drilling.

In this state, by lowering the head 15 slidably mounted to the lid, the drive rod 20 coupled with the drive shaft 14 of the head 15 and the water hammer 30 installed at the end is drilled while lowering and rotating. Do the work. In the process of drilling as described above, the pumping unit 70 supplies high-pressure water, which is a gas, air, which is gas, through the hollow of the drive shaft 14 and the rod hollow 21 of the drive rods 20. The water supplied through the hollow portion 21 of the drive rod 20 flows through the first inner tube portion 46 of the accumulator 40 and then is discharged by the blocking member 51 installed at an end thereof. Through the outflow to the gas storage unit 45 side. In this process, the air piggybacked on the water is moved to the upper side of the gas storage part 45 by the difference in specific gravity and stored in the gas storage part 45. In addition, the water from which the air, which is a gas, is separated is discharged through the outlet hole 53, and the discharged water is supplied to the water hammer 30 through the rod hollow portion 21 of the drift rod 20 or directly to the water hammer. 30 is supplied to 30 to drive the water hammer 30 to strike the bit, thereby drilling the ground.

As described above, the air stored in the accumulator 40 is continuously supplied from the water for driving the water hammer 30 as described above, so that the depth of the perforated hole is deepened, so that the water pressure of the ground water or the operation of the water hammer 30 is increased. The pulsation caused by this can be reduced. As the compression and compression of the air in the accumulator 40 increases, the pressure of the compressed air acts on the piston of the water hammer when the bit is hit by the piston of the water hammer 30, thereby increasing the impact force.

In particular, as shown in FIG. 2, the water operated by the water hammer 30 is discharged and discharged to the ground through the hole drilled by the water hammer 30, at this time, the discharge of fluid according to the piston operation of the water hammer Since this is not continuous, pulsating pressure is generated. The pulsating pressure generated in this way can be absorbed by the accumulator 40 as described above. That is, the pulsating pressure acting on the water discharged through the punched hole 200 is supplied to the gas storage unit 45 through the first outlet 52 and the outlet 53 to compress and absorb the stored air. And the absorbed pressure is discharged when the pressure in the perforated hole 200 becomes relatively low. Therefore, the water discharged through the perforated hole 200 can be continuously discharged without generating the pulsating pressure.

In particular, as the depth of drilling deepens, the air stored in the gas storage unit 45 receives a relatively high pressure, but since the compressed air is contained in the water pumped by the pumping unit 70, the air is absorbed by the pressure. Even if melted, the gas storage unit 45 may be continuously filled with air.

As described above, the fabric mill using the water hammer according to the present invention can increase the impact force of the bit by providing an acceleration force to the piston of the water hammer operated by the water supplied to the drive rod. In addition, a separate charging part for filling a gas such as nitrogen into the hydraulic hammer is unnecessary as in the related art, and as the depth of the perforation increases, the problem of filling the high pressure gas may be solved.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims

A head unit having a drilling base body having a driving unit, a head guided by a lead installed in the drilling base body and having a hollow drive shaft, and a drive having a water hammer for drilling at the end, coupled with a driving shaft of the head unit, being elevated as a head unit; An accumulator having rods, a gas storage unit installed between the drive rods and supplied with water to be separated and stored therein, and connected to the drive shaft or the drive rod to piggyback the gas on the water to hollow or drive rods of the drive shaft. A pump using a water pump, characterized in that it comprises a pumping unit for driving the water hammer by pumping the water piggybacked gas through the rod hollow portion and supplying gas to the gas storage unit.
The method of claim 1,

The accumulator includes a tubular first body having a hollow portion,

A first coupling member installed on an upper portion of the first body and having an inlet for water, a second coupling member installed at a lower end of the first body, and having an outlet for outflow of water, and communicating with an inlet of the first coupling member The upper end is fixed so as to extend to the second coupling member side to form a gas reservoir by partitioning the hollow portion of the first body in the longitudinal direction and at least one for separating water and air by radially discharging water on the end side Drilling device using a water hammer, characterized in that it comprises a first inner pipe formed with a discharge hole.
The method of claim 1,

An end portion of the first inner tube is coupled to an outlet of the second coupling member, and water introduced through the first inner tube is discharged through the discharge hole in the first inner tube adjacent to the second coupling member. Blocking member is installed so that the first inner tube of the lower side of the blocking member is puncture device using a water hammer, characterized in that at least one inlet hole for introducing water discharged from the discharge hole into the outlet .
The method of claim 1,

The pumping unit includes a cylinder portion, a pump housing in communication with the cylinder portion and having a first suction portion and a first discharge portion, a piston installed in the cylinder portion to reciprocate to suck and discharge water, and the first suction portion. A first check valve installed at the piston part and opened when the piston is retracted and closed when moving forward, a second check valve installed at the first discharge part and opened when the piston is moved forward and closed when retracting, and installed at the pump housing to the cylinder part and the piston. And a gas supply unit for supplying gas to the auxiliary cylinder in order to piggyback the gas on the pumped water.
The method of claim 4, wherein

The pump housing further includes an auxiliary cylinder portion communicating with the cylinder portion, the gas supply portion is provided with a gas supply portion in communication with the auxiliary cylinder portion of the pump housing, the gas supply portion is opened when the suction of water by the piston is opened and the piston advances And a third check valve that is closed when the water is discharged.