CN212535593U - Continuous conduit type coring equipment - Google Patents

Abstract

The utility model relates to a continuous conduit type coring device, which comprises a coring device and a continuous conduit operation device; the coring device comprises an inner pipe assembly and an outer pipe assembly, wherein the inner pipe assembly can be connected with the outer pipe assembly in a clamping manner; the outer pipe assembly comprises an outer pipe and a drill bit arranged on the outer pipe, and the inner pipe assembly comprises an inner pipe component and a center rod; the inner pipe assembly comprises a rock core inner cylinder, a rock core outer cylinder and a pressure retaining valve arranged at the bottom of the rock core outer cylinder; the continuous conduit operation device comprises a continuous conduit and a guiding and injecting integrated mechanism capable of pulling the continuous conduit to go down a well or pull out the continuous conduit, wherein the continuous conduit is used for lowering and lifting the inner pipe assembly. The utility model utilizes the continuous conduit operation device to lift and lower the pressure maintaining coring device, the continuous conduit is convenient for the inner through cable to transmit the measurement and control signal, which is beneficial to realizing the real-time measurement of the hole bottom parameter; the guiding and injecting integrated mechanism integrates the guiding function and the injecting function, so that a guiding gooseneck can be omitted, and the height of the device can be effectively reduced; the device is suitable for the working environment with limited space height.

Description

Continuous conduit type coring equipment

Technical Field

The utility model relates to an underground exploration technical field especially relates to a continuous pipe formula core equipment.

Background

China is a large country for coal production and a large country for coal consumption, and coal is an important basic energy and raw material in China. The coal bed gas content and the coal bed gas pressure are main indexes for predicting and inspecting regional effect of outburst danger regions of outburst coal beds, the coal bed gas content is generally measured by methods such as ground coal bed gas content measurement, geological exploration gas content measurement, drilling and coring of underground coal beds of mines and the like, and due to differences of coal bed gas content test conditions, test methods and the like, the coal bed gas content test results are often large in difference and low in precision, estimation loss generally exists, and the guiding significance for coal mining is limited.

For coring in coal bed tunnels, patent document CN204646157U discloses a coal bed methane cable coring device which uses a rope to lift/lower a coring device and needs to be supplied with compressed air to drive the coring device to operate. And the corer of publication No. CN107905752A, also uses a rope-lift/lower corer. The coring device of this configuration is inconvenient for cable routing.

Coiled tubing operations are one of the techniques commonly used for exploration and development. As shown in fig. 1, existing coiled tubing work equipment typically includes a guide gooseneck (reference numeral 100) for guiding coiled tubing into an injection head (reference numeral 200). The inlet of the existing continuous pipe injection head is positioned right above the outlet, the injection head has a certain height, and the height of the guide gooseneck is increased, so that the whole equipment is very high, and the continuous pipe injection head is not suitable for an operation environment with limited space height (such as a coal mine roadway, and the height is generally not more than 3 m).

In addition, in order to further perform pressure-maintaining coring of a coal seam, patent document No. CN201811862U discloses a pressure-maintaining closed coal core sampler for performing pressure-maintaining coring of a sample by means of a viscous liquid and a vacuum device, in which fluid media exist in all the devices, which may cause certain pollution to the coal seam core and affect measurement of parameters such as water content.

The coring device is generally composed of an inner tube assembly and an outer tube assembly, a gap exists between the inner tube assembly and the outer tube assembly, so that a coring barrel is easy to rotate along with a coring outer barrel, and when external disturbance is large, large errors may exist between coring components and the real situation. In order to reduce errors caused by rotation, a single-action device is usually arranged between an outer pipe assembly and an inner pipe assembly of the currently used coring device to reduce the rotation of a coring barrel, but the single-action device has an anti-rotation effect, but the anti-rotation effect is limited, and the measurement errors are difficult to be effectively reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned technical problem and provide a continuous pipe formula coring equipment.

The utility model discloses a following technical scheme realizes:

a continuous conduit coring apparatus comprising a corer and a continuous conduit operation device; the coring device comprises an inner pipe assembly and an outer pipe assembly, wherein the inner pipe assembly can be connected with the outer pipe assembly in a clamping manner;

the outer tube assembly comprises an outer tube and a drill bit mounted on the outer tube, and the inner tube assembly comprises an inner tube component and a center rod; the inner pipe assembly comprises a rock core inner cylinder, a rock core outer cylinder and a pressure retaining valve arranged at the bottom of the rock core outer cylinder;

the continuous conduit operation device comprises a continuous conduit and a guide injection integrated mechanism, wherein the continuous conduit is used for lowering and lifting the inner pipe assembly;

the guide injection integrated mechanism comprises a pair of chain wheel and chain clamping assemblies, the chain wheel and chain clamping assemblies are used for clamping the continuous conduit and drawing the continuous conduit to go down a well or pull out the continuous conduit, a conduit guide channel for the continuous conduit to pass through can be formed between the chain wheel and chain clamping assemblies, and an inlet and an outlet of the conduit guide channel are not on the same straight line.

Further, a continuous pipe formula coring equipment still includes the gallery rig, the outer tube assembly passes through the drilling rod and connects the gallery rig.

Preferably, the catheter guide channel is circular in shape.

Furthermore, each of the two chain wheel and chain clamping assemblies comprises a chain wheel set, a chain, a clamping block arranged on the chain and a push plate used for compressing the clamping block;

the push plate is an arc-shaped plate, and the push plates of the two chain wheel and chain clamping assemblies are concentrically arranged; the push plate of at least one chain wheel and chain clamping assembly is connected with a clamping driving device for driving the chain wheel and chain clamping assembly to move in the radial direction;

the push plates of the two chain wheel and chain clamping assemblies are used for enabling part of clamping blocks of the two chain wheel and chain clamping assemblies to form the guide channel of the conduit, and enabling the part of clamping blocks on the two chain wheel and chain clamping assemblies to clamp the conduit.

The chain wheel group of the chain wheel and chain clamping assembly positioned on the periphery comprises a driving wheel, a tension wheel and a driven wheel; the chain wheel group of the chain wheel and chain clamping assembly positioned on the inner periphery at least comprises a driving wheel and a driven wheel.

Further, continuous pipe formula coring equipment still includes coalignment, coalignment is used for carrying out the alignment to continuous pipe.

Further, the straightening device comprises a bracket, a first roller, a second roller, a crank arm and a pressing oil cylinder; the number of the first rollers is at least two, and the first rollers are arranged along the linear direction;

one end of the crank arm is movably connected with the support, the second roller wheel is rotatably installed at the inflection point of the crank arm, and the output end of the pressing oil cylinder is connected with the other end of the crank arm so that a straightening channel is formed between the first roller wheel and the second roller wheel.

Further, the bottom end of the central rod is fixedly connected with a piston, and a pressure maintaining controller is arranged in the piston;

the pressure maintaining controller comprises a pressure maintaining cylinder, the pressure maintaining cylinder is vertically arranged, a pressure maintaining piston is arranged in the pressure maintaining cylinder, the pressure maintaining piston is in sliding fit with the inner wall of the pressure maintaining cylinder, the pressure maintaining piston divides the pressure maintaining cylinder into an upper cavity and a lower cavity, the lower cavity is communicated with the bottom surface of the piston, and gas is filled in the upper cavity.

Furthermore, a composite bearing set is arranged between the inner pipe assembly and the central rod, and the central rod comprises a positioning pipe section;

the composite bearing set comprises a base, wherein the base is in a thrust bearing form, the base is arranged in the inner pipe assembly, the inner wall of the base is provided with an annular ball recess, the middle part of the positioning pipe section is circumferentially provided with a plurality of ball holes, the spherical roller is arranged in the ball holes, and the convex part of the spherical roller is matched with the ball recess;

be equipped with first annular protruding stupefied on the well core rod, be equipped with thrust bearing between first annular protruding stupefied and the inner tube subassembly, first annular protruding stupefied is located between two thrust bearing.

Wherein, the top of the inner pipe component is provided with an elastic clamping mechanism, and the inner wall of the top of the outer pipe assembly is provided with an elastic clamping chamber;

the outer wall of the elastic clamping mechanism is provided with a latch groove, a latch is installed in the latch groove, the bottom of the latch is rotatably connected with the inner wall of the latch groove, a spring is arranged between the top of the latch and the latch groove, and the latch is matched with the elastic clamping chamber.

Furthermore, the pressure retaining valve is a self-gravity valve, the self-gravity valve comprises an annular valve seat and a circular valve clack, and the edge of the circular valve clack is hinged with the edge of the top surface of the annular valve seat;

the circular valve clack has an elastic structure, when the self-gravity valve is opened, the circular valve clack is in a vertical position, the circular valve clack is arc-shaped, and the circular valve clack is matched with the inner wall of the outer core barrel.

Compared with the prior art, the utility model discloses following beneficial effect has:

1, the utility model uses a continuous conduit operation device to lift and lower the pressure-maintaining coring device, and plays the role of a rope in the traditional rope coring; moreover, the hollow structure of the continuous conduit can be internally penetrated with a cable to transmit a measurement and control signal, and the coring device is provided with a sensor or a related measurement and control device, so that the real-time measurement of target parameters required by the bottom of the hole is realized;

2, the guiding and injecting integrated mechanism of the utility model integrates the guiding and injecting functions, thus omitting the guiding gooseneck and effectively reducing the height of the device; the device is particularly suitable for operation environments with limited space height (such as operation in coal mine tunnels);

3, the utility model discloses a coalignment can carry out the alignment to continuous pipe, does benefit to and ensures that continuous pipe gets into in the well perpendicularly, can effectively alleviate wearing and tearing in the pit.

4, the continuous conduit has certain rigidity and is directly connected with a central rod of the pressure maintaining coring device, and a composite bearing group is arranged between the central rod and the inner pipe assembly, so that the coring barrel can be prevented from rotating in the coring process, the anti-twisting capacity of the continuous conduit is good, and the anti-rotating capacity of the continuous conduit is good; the coring device is particularly suitable for the conditions that the coring depth is limited and the length of a used continuous conduit is limited in an underground tunnel;

5, the composite bearing is used in the utility model, which not only can play the role of preventing rotation of the inner core barrel, but also can play the role of positioning when the inner core barrel is lowered/lifted;

6, the utility model discloses utilize rig drive coring device to creep into, need not to use fluid medium, can avoid causing the pollution to the coal seam core, prevent to influence the survey of moisture content isoparametric.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention.

FIG. 1 is a schematic view of a prior art guide gooseneck and injection head;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic view of a continuous conduit work apparatus;

FIG. 4 is a schematic view of a reel apparatus;

FIG. 5 is a side view of the reel assembly;

FIG. 6 is a schematic structural diagram of an integrated guiding and injecting mechanism and a straightening device according to an embodiment;

FIG. 7 is a schematic view of the partial position of the clamping block gripping a conduit;

FIG. 8 is a cross-sectional view taken at A-A of FIG. 7;

FIG. 9 is a partial schematic view of a catheter guide channel;

FIG. 10 is a schematic view of an outer tube assembly;

FIG. 11 is a cross-sectional view of the outer tube assembly;

FIG. 12 is a cross-sectional view of the center assembly mounted to the inner tube assembly prior to coring;

FIG. 13 is a cross-sectional view of the center assembly mounted to the inner tube assembly after coring;

FIG. 14 is a schematic view of the card ejection mechanism of FIG. 13;

FIG. 15 is a schematic view of FIG. 13 at the thrust bearing;

FIG. 16 is a schematic view of the piston of FIG. 13;

FIG. 17 is a schematic view of the self-gravity valve of FIG. 13;

FIG. 18 is a schematic view at the composite bearing set prior to coring;

FIG. 19 is a schematic structural view of an integrated guiding and injecting mechanism and a straightening device according to a second embodiment;

fig. 20 is a schematic structural view of the guiding injection integration mechanism and the straightening device in the third embodiment.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Example one

As shown in fig. 2, the continuous pipe type coring apparatus disclosed in the present embodiment includes a continuous pipe working device, an excavation drill 6, and a coring device 3.

The continuous conduit operation device comprises a reel device 1, an operation vehicle, a continuous conduit 9 and a guiding and injecting integrated mechanism 2.

As shown in fig. 2, 3, 4 and 5, the reel device 1 is mounted on a work vehicle for housing the continuous conduit 9. The reel device 1 comprises a reel 1101 and a reel frame 1102, wherein the reel 1101 is arranged on the reel frame 1102, and a pipe arranging device assembly is arranged on the reel frame 1102. The work vehicle includes a base 1301 and a crawler belt 1302, and the crawler belt 1302 is provided at the bottom of the base 1301.

The calandria device assembly comprises a calandria support 1104 and a torque limiter, the calandria support 1104 is rotatably connected with a drum rack 1102, a lifting hydraulic rod 1105 is arranged between the calandria support 1104 and the drum rack 1102, a bidirectional screw 1106 is arranged on the calandria support 1104, and a guide device 1107 is arranged on the bidirectional screw 1106. The guide 1107 houses a mechanical counter and rotation system comprising a plurality of transfer wheels 1109. A lifting oil cylinder 1108 is arranged between the guide device 1107 and the bidirectional screw 1106, and when the continuous conduit 9 is in the transmission process, the guide device 1107 reciprocates along the bidirectional screw 1106, so that the continuous conduit 9 is neatly accommodated on the winding drum 1101.

As shown in fig. 3, the excavation drilling machine 6 comprises a crawler traveling base, a drilling machine support 1203 and a drill rod driving device 1204, the drilling machine support 1203 is mounted on the crawler traveling base, the drill rod driving device 1204 is mounted on the drilling machine support 1203, and the drill rod driving device 1204 is operatively connected with the drill rod 4.

As shown in fig. 2 and 3, the guiding and injecting integrated mechanism 2 is mounted on a frame of the tunnel boring machine 6. The guiding injection integrated mechanism 2 comprises a first chain wheel and chain clamping assembly 20 and a second chain wheel and chain clamping assembly 21 which are used for clamping the continuous guide pipe 9 and pulling the continuous guide pipe 9 to go down a well or lift out. The first sprocket chain clamping assembly 20 and the second sprocket chain clamping assembly 21 can form a conduit guide channel for the conduit to pass through, and the inlet and the outlet of the conduit guide channel are not in the same straight line.

In order to make the deformation of the continuous conduit smoother, the conduit guiding channel is arc-shaped.

As shown in fig. 6, the first sprocket/chain clamping assembly 20 in this embodiment includes a first driving wheel 201, a first tensioning wheel 204, a first driven wheel 202, a first chain 203, a first pushing plate 205, and a plurality of clamping blocks 23 mounted on the first chain 203; the first driving wheel 201 and the first tension wheel 204 are not in a straight line with the first driven wheel 202, and the first chain 203 is engaged with the first driving wheel 201, the first tension wheel 204 and the first driven wheel 202.

The second sprocket chain clamping assembly 21 comprises a second driving wheel 211, a second driven wheel 212, a second chain 213, a second push plate 215 and a plurality of clamping blocks 23 arranged on the second chain 213, wherein the second chain 213 is engaged with the second driving wheel 211 and the second driven wheel 212.

The first push plate 205 and the second push plate 215 are both arc-shaped plates, the first push plate 205 and the second push plate 215 are concentrically arranged, and the radius of the first push plate 205 is smaller than that of the second push plate 215.

Of course, traction motors are connected to both the first driving wheel 201 and the second driving wheel 211. The first driving wheel 201, the first tensioning wheel 204, the first driven wheel 202, the second driving wheel 211, the second driven wheel 212 and the second chain 213 are all mounted on a frame, and the frame is connected with a drilling machine support 1203. The traction motors and frames are not shown, as is conventional in the art and will not be described further herein.

The second pushing plate 215 in this embodiment is connected to a clamping driving device 22 for driving the second pushing plate to move in a radial direction; the clamp drive 22 is a cylinder.

The first push plate 205 and the second push plate 215 are used for forming a conduit guiding channel between a part of the clamping blocks 23 on the first chain 203 and a part of the clamping blocks 23 on the second chain 213 and clamping the part of the clamping blocks 23 on the first chain 203 and the second chain 213 to the continuous conduit 9.

Both the inner and outer sides of the first tensioning wheel 204 in this embodiment are in engagement with the first chain 203. A first push plate 205 is arranged between the first driving wheel 201 and the first tension wheel 204 and between the first tension wheel 204 and the first driven wheel 202.

In this embodiment, one end of the second push plate 215 starts at the second driving wheel 211, and the other end of the second push plate 215 extends to the second driven wheel 212. Due to the long arc length of the second push plate 215, at least two clamping drivers 22 are connected to the second push plate 215 to ensure sufficient clamping force.

As shown in fig. 6, 7, 8, 9, the gripping blocks 23 are arranged on the chain section by section. Adjacent clamping blocks 23 have a gap 31 between them. The first push plate 205 and the second push plate 215 arrange the plurality of grip blocks 23 in the direction of the circular arc thereof to form the catheter guide channel 24, thereby achieving the guide of the continuous catheter 9.

The clamping surfaces of the clamping blocks 23 of the first and second chains 203 and 213 are curved in the guiding direction to contact the surface of the continuous conduit 9, increasing the clamping force and smoothing the deformation of the continuous conduit 9.

As shown in fig. 8, the holding block 23 is provided with a bearing roller 25, the first push plate 205 presses the bearing roller 25 of the holding block 23 on the first chain 203, and the second push plate 215 presses the bearing roller 25 of the holding block 23 on the second chain 213.

Of course, the bearing roller 25 may be mounted on the push plate.

The guide pipe guide channel 24 is arc-shaped, when the guide pipe is injected, the continuous guide pipe 9 is subjected to plastic bending deformation at the guide pipe guide channel 6, so that the continuous guide pipe 9 coming out of the guide pipe guide channel 6 has residual bending, and the residual bending after the guide pipe is put into the well enables the continuous guide pipe 9 to be prone to eccentric abrasion with the well wall in the well, so that the underground abrasion is increased.

As shown in fig. 6, the utility model discloses having add straightener 8 and having carried out the alignment to continuous pipe 9, but furthest's continuous pipe 9's remaining crooked does benefit to and guarantees that continuous pipe 9 gets into in the well perpendicularly, can effectively alleviate wearing and tearing in the pit.

The straightening device 8 in this embodiment is selected as a roller straightening device. There are many roller straightening devices, which can be selected according to the needs.

As shown in fig. 6, the straightening device 8 of the present invention includes a bracket 80, a first roller 82, a second roller 83, a crank arm 84, and a hold-down cylinder 85; the first rollers 82 are installed on the bracket 80, and the number of the first rollers 82 is at least two, and the first rollers 82 are arranged in a linear direction. One end of a crank arm 84 is movably connected with the bracket 80, the second roller 83 is rotatably arranged at the inflection point of the crank arm 84, and the output end of a pressing oil cylinder 85 is connected with the other end of the crank arm 84 so that the second roller 83 can press the continuous conduit 9, thereby forming an alignment channel between the first roller 82 and the second roller 83.

The utility model discloses well direction pours into the theory of operation of integration mechanism 2 into:

as shown in fig. 2, 3 and 6, the free end of the continuous conduit 9 passes between the gripping blocks 23 of the first 203 and second 213 chains;

the first push plate 205 and the second push plate 215 press the clamping blocks 23 on the first chain 203 and the second chain 213, so that the clamping blocks 23 clamp the continuous conduit 9;

the first driving wheel 201 and the second driving wheel 211 rotate to drive the first chain 203 and the second chain 213 to move, and then drive the clamping block 23 to move, so that the continuous conduit 9 clamped by the clamping block 23 goes into the well or is lifted out;

the continuous conduit 9 from the conduit guiding channel is aligned by the aligning device 8 and then operatively connected to the corer 3, and then the corer 3 is lifted up and down.

The utility model discloses a direction is poured into integration mechanism and is guided and pour into the function into based on an organic whole, has add coalignment again, when effectively reducing equipment height, can ensure not to increase wearing and tearing in the pit again. The utility model discloses be particularly useful for the limited operation environment of space height, for example the operation in coal mine tunnel.

As shown in fig. 10, 11, 12, 13, the corer 3 includes an outer tube assembly and an inner tube assembly. The inner pipe assembly is lifted or lowered through the continuous guide pipe 9 to move, the inner pipe assembly is installed inside the outer pipe assembly, the outer wall of the inner pipe assembly is in clearance fit with the inner wall of the outer pipe assembly, the inner pipe assembly comprises an inner pipe component and a center component, the center component is installed in the inner pipe component, the outer wall of the center component is in sliding fit with the inner wall of the inner pipe component, and the outer pipe assembly is connected with the drill rod 4. The outer pipe assembly is driven to drill by the drill rod driving device 1204, a fluid medium is not needed, pollution to the coal seam core can be avoided, and measurement of parameters such as water content is prevented from being influenced.

As shown in fig. 10 and 11, the outer tube assembly comprises a first tube segment 51, a second tube segment 52, a third tube segment 53, a fourth tube segment 54, a reaming segment 55 and a core bit 56 which are coaxially mounted and connected from top to bottom.

The first pipe section 51, the second pipe section 52, the third pipe section 53 and the fourth pipe section 54 constitute an outer pipe.

The first pipe section 51 is detachably connected with the second pipe section 52, the bottom end of the first pipe section 51 is a male head, the top end of the second pipe section 52 is a female head, an elastic clamping chamber 511 is arranged in the middle of the first pipe section 51, the elastic clamping chamber 511 is arranged along the circumferential direction, a first sealing ring is arranged between the first pipe section 51 and the second pipe section 52, the first sealing ring is in sliding fit with the inner pipe assembly, a suspension ring 512 is arranged between the first pipe section 51 and the second pipe section 52, the suspension ring 512 is matched with the bottom edge of the elastic clamping mechanism 62, and when the inner pipe assembly reaches a preset position in the outer pipe assembly, the bottom edge of the elastic clamping mechanism 62 is located on the suspension ring 512 and used for limiting the downward position of the inner.

The second pipe section 52 is detachably connected with the third pipe section 53, the bottom end of the second pipe section 52 is a male connector, and the top end of the third pipe section 53 is a female connector. The third pipe section 53 is detachably connected with the fourth pipe section 54, the bottom end of the third pipe section 53 is a male head, and the top end of the fourth pipe section 54 is a female head.

The fourth pipe section 54 is detachably connected with the reaming section 55, and the bottom end of the fourth pipe section 54 is a male end. The top end of the reaming section 55 is a female head, a plurality of reaming convex ridges 551 are arranged on the outer wall of the reaming section 55 along the circumferential direction, the reaming convex ridges 551 are arranged at an angle with the vertical direction, and an inclined channel is formed between every two adjacent reaming convex ridges 551.

Reaming section 55 can be dismantled with core bit 56 and be connected, 55 bottoms of reaming section are public head, 56 tops of core bit are female, the blade 561 of drill bit is arranged on core bit 56's bottom surface, a plurality of blades 561 use core bit 56 central points to be annular array distribution as the centre of a circle, core bit 56 bottom surface center is equipped with first through-hole 563, first through-hole 563 diameter is less than core bit 56 internal diameter, core bit 56 middle part inner wall is equipped with from the top first domatic 562 that reduces gradually to the end diameter.

As shown in fig. 12 and 13, the inner pipe assembly includes a lock nut 61, a spring clip mechanism 62, a connecting section 63, a fifth pipe section 64, a sixth pipe section 65, a seventh pipe section 67, and a core outer cylinder 68, which are arranged in sequence from top to bottom.

Lock nut 61 can be dismantled and connect bullet card mechanism 62, and lock nut 61 bottom is female, and bullet card mechanism 62 top is public, and lock nut 61 top surface is equipped with first set screw 611, and first set screw 611 sets up along the axial, and in first set screw 611 runs through the pit of inserting bullet card mechanism 62 top surface behind the lock nut 61, first set screw 611 and lock nut 61 threaded connection.

As shown in fig. 13 and 14, the elastic clamping mechanism 62 is detachably connected to the connecting section 63, the bottom end of the elastic clamping mechanism 62 is a female head, the top end of the connecting section 63 is a male head, the outer wall of the elastic clamping mechanism 62 is provided with two latch grooves 621, the two latch grooves 621 are arranged along the circumferential direction, two latch grooves 621 are oppositely arranged, a latch 622 is installed in each latch groove 621, a pin 623 is arranged between two side walls of each latch groove 621, the pin 623 penetrates through each latch 622, the pin 623 is rotatably connected with each latch 622, the pin 623 is arranged at the bottom of each latch groove 621, a spring hole 624 is arranged on the surface of the top of each latch 622 facing the elastic clamping mechanism 62, a recess 625 is arranged at the top of each latch groove 621, a spring 626 is installed between each latch 622 and each latch groove 621, one end of each spring 626 is inserted into each spring hole 624, the other end of each spring 626 is inserted into each recess 625, a limit ring 627 is installed at the edge of the top of each latch groove 621, the bottom surface of the limiting ring 627 is a first inclined surface 628 facing the latch groove 621, the top surface of the latch 622 facing away from the latch mechanism 62 is a second inclined surface 629, the first inclined surface 628 is matched with the second inclined surface 629 to control the ejecting distance of the top of the latch 622, and the inner wall of the bottom of the latch mechanism 62 is a stepped hole structure.

As 13, 15 show, the connecting section 63 middle part is equipped with first annular protruding stupefied 631, fifth pipe section 64 top inner wall is equipped with second annular protruding stupefied 641, first annular protruding stupefied 631 is located fifth pipe section 64, first annular protruding stupefied 631 periphery and fifth pipe section 64 inner wall clearance fit, install thrust bearing 632 between first annular protruding stupefied 631 top surface and the protruding stupefied 641 bottom surface of second annular, be equipped with seal assembly 633 between first annular protruding stupefied 631 inner wall and the connecting section 63 outer wall.

The fifth pipe section 64 is detachably connected with the sixth pipe section 65, the bottom end of the fifth pipe section 64 is a female head, the top end of the sixth pipe section 65 is a male head, a thrust bearing 632 is arranged between the top surface of the sixth pipe section 65 and the bottom surface of the first annular convex edge 631, a first sealing groove 651 is arranged on the periphery of the bottom of the male head of the sixth pipe section 65, and an O-shaped sealing ring is arranged in the first sealing groove 651.

Sixth pipe section 65 and seventh pipe section 67 detachable are connected, and sixth pipe section 65 bottom is public head, and seventh pipe section 67 head end is female, and compound bearing group 671 is installed to seventh pipe section 67 head inner wall, and compound bearing group 671 passes through fourth set screw 672 to be fixed in seventh pipe section 67.

As shown in fig. 13 and 17, the seventh pipe section 67 is detachably connected to the core outer cylinder 68, the bottom end of the seventh pipe section 67 is a male head, and the top end of the core outer cylinder 68 is a female head. And a pressure retaining valve is arranged at the bottom of the outer core barrel. In this embodiment, the pressure retaining valve is selected from the gravity valve 682.

Specifically, the inner wall of the bottom end of the outer core barrel 68 is provided with an annular recess 681, the top of the annular recess 681 is provided with a self-gravity valve 682, the self-gravity valve 682 comprises an annular valve seat 683 and a circular valve clack 684, the annular valve seat 683 is fixedly connected with the inner wall of the annular recess 681, the circular valve clack 684 is of a deformable structure, the edge of the circular valve clack 684 is hinged to the top surface edge of the annular valve seat 683, the size of a channel at the center of the annular valve seat 683 is gradually reduced from top to bottom, when the self-gravity valve 682 is opened, the circular valve clack 684 is arc-.

The locking section is installed to annular 681 bottom, and locking section top inner wall is the shoulder hole structure, and locking section bottom outer wall is for the second that reduces from the top to the end size gradually domatic, and first domatic 562 adaptation second is domatic.

As shown in fig. 12, 13 and 16, the central assembly includes a central rod 71 and a core inner cylinder 81, the bottom of the central rod 71 is inserted into the core inner cylinder 81, the central rod 71 is slidably fitted with the core inner cylinder 81, and the core outer cylinder 68 and the core inner cylinder 81 constitute a core cylinder.

The top of the card ejecting mechanism 62 is provided with a second fixing screw 711, the second fixing screw 711 is arranged along the radial direction, and the second fixing screw 711 penetrates the top of the card ejecting mechanism 62 and is inserted into the central rod 71.

The core inner barrel 81 comprises a compensation pipe section 811, a positioning pipe section 812 and a storage barrel 813 which are sequentially arranged from top to bottom.

The compensating pipe section 811 is detachably connected with the positioning pipe section 812, the bottom end of the compensating pipe section 811 is a male head, the top end of the positioning pipe section 812 is a female head, a third fixing screw 8111 penetrates through the positioning pipe section 812 and then is screwed into the compensating pipe section 811, and the compensating pipe section 811 is in sliding fit with the central rod 71.

The positioning pipe section 812 is detachably connected with the storage cylinder 813, the bottom end of the positioning pipe section 812 is a male head, the top end of the storage cylinder 813 is a female head, a gap is formed between the inner wall of the positioning pipe section 812 and the central rod 71,

as shown in fig. 16 and 18, the composite bearing set 671 includes a base 6711, the base 6711 is a thrust bearing, an annular ball recess 6716 is provided on an inner wall of the base 6711, a plurality of ball holes 8121 are provided in a middle portion of the positioning pipe section 812 along a circumferential direction, the spherical roller 8122 is installed in the ball hole 8121, a protruding portion of the spherical roller 8122 can slide in the ball recess 6716, the ball recess 6716 has a smaller depth, and when the positioning pipe section 812 is moved upward by an external force, the spherical roller 8122 can slide out of the ball recess 6716 more easily.

The base 6711 includes a top ring 6712, a middle ring 6713 and a bottom ring 6714, which are stacked in sequence, a roller 6715 is disposed between the top ring 6712 and the middle ring 6713, a roller 6715 is disposed between the middle ring 6713 and the bottom ring 6714, and a ball recess 6716 is disposed on an inner wall of the middle ring 6713.

The fixed pipe section 814 is installed to the inner wall of location pipeline section 812 top, and fixed pipe section 814 cover is located well core rod 71 periphery, and key 8142 is spherical, and fixed pipe section 814 is equipped with the second through hole 8141 of adaptation key 8142, and the diameter of key 8142 is greater than the length of second through hole 8141, and location pipeline section 812 inner wall is equipped with first keyway 8143, first keyway 8143 adaptation key 8142, well core rod 71 bottom outer wall is equipped with second keyway 8144, second keyway 8144 adaptation key 8142.

Before coring, the key 8142 is positioned in the second through hole 8141 and the first key slot 8143, and the fixed pipe section 814 is fixedly connected with the positioning pipe section 812 through the key 8142.

When coring is performed, the central rod 71 moves upwards, the key 8142 is separated from the first key slot 8143, then the key 8142 enters the second key slot 8144, the fixed pipe section 814 is fixedly connected with the central rod 71 through the key 8142, the central rod 71 drives the fixed pipe section 814 to move upwards, the fixed pipe section 814 abuts against the bottom surface of the compensation pipe section 811, and the central rod 71 further drives the core inner cylinder 81 to move upwards.

The inner wall edge of the bottom surface of the positioning pipe section 812 is a third inclined surface 8123 with the diameter gradually increasing from top to bottom.

The inner wall of the bottom of the storage cylinder 813 is provided with a plurality of anti-skid convex ribs 8131 along the axial direction, and the anti-skid convex ribs 8131 are of an annular structure.

As shown in fig. 13 and 16, a piston 712 is fixedly connected to the bottom end of the central rod 71, a plurality of second sealing grooves 713 are formed on the periphery of the bottom end of the central rod 71, an O-ring is arranged in each second sealing groove 713, the O-ring at the bottom end of the central rod 71 is used for being in sealing connection with the inner wall of the positioning pipe section 812, the central rod 71 and the piston 712 are integrally manufactured, the reel device 1 provides a continuous guide pipe 9 for the transfer device 2, and the continuous guide pipe 9 penetrates through the drill rod 4 and is connected with the.

The outer edge of the top surface of the piston 712 is a fourth inclined surface 714 with the diameter gradually increasing from top to bottom, the third inclined surface 8123 is matched with the fourth inclined surface 714, the piston 712 is in sliding connection with the inner wall of the storage cylinder 813, a third sealing groove 715 is formed in the periphery of the top of the piston 712, and a sealing ring is installed in the third sealing groove 715.

Be equipped with the pressurize controller in the piston 712, the pressurize controller includes pressurize jar 1501, and the vertical setting of pressurize jar 1501 is equipped with pressurize piston 1502 in the pressurize jar 1501, and pressurize piston and pressurize jar inner wall sliding fit, pressurize piston 1502 divide into mutually isolated upper portion cavity 1503, lower part cavity 1504 with pressurize jar 1501, and lower part cavity 1504 communicates with storage cylinder 813, is filled with gas in the upper portion cavity 1503, like nitrogen gas etc.

In actual use, after the inner tube assembly and the center assembly are assembled together, the inner tube assembly is inserted into the outer tube assembly by connecting the top end of the center rod 71 with the continuous guide tube 9, and the latch mechanism 62 is engaged in the latch groove 621.

When coring is carried out, the central rod 71 is lifted up through the continuous conduit 9, the second fixing screw 711 is broken under the action of shearing force, the central component is separated from the inner pipe component, the storage cylinder 813 is kept still at the moment, the piston 712 moves upwards, the rock core enters the storage cylinder 813, after the third inclined surface 8123 is in contact with the fourth inclined surface 714, the central rod 71 drives the rock core inner cylinder 81 to move upwards, and after the bottom end of the rock core inner cylinder 81 is removed from the upper end of the circular valve clack 684, the circular valve clack 684 is closed towards the annular valve seat 683 under the action of gravity and elasticity, so that the coring work of pressure maintaining and gas protecting is achieved.

In the working process, the continuous guide pipe 9 is connected with the central rod 71, for coal mine coring, the used continuous guide pipe 9 is short in length, and the continuous guide pipe 9 has good torsion resistance.

Simultaneously the utility model discloses use compound bearing group 671, be equipped with spherical roller 8122 between compound bearing group 671 and the location pipeline section 812, also can play the rotation that prevents the core inner tube 81.

The utility model discloses still be equipped with linkage segment 63, can transmit the rotation of outer tube assembly to core urceolus 68 earlier, reduce the influence of outer tube assembly to core inner tube 81, further prevent that core inner tube 81 from rotating.

The center assembly and the inner tube assembly are provided with two sets of thrust bearings 632, and when the snapping mechanism 62 rotates, the two sets of thrust bearings 632 act to prevent the core barrel from rotating.

Prior to coring, the upper chamber 1503 is filled with nitrogen gas and the holding piston 1502 is located at the bottom of the holding cylinder 1501.

During coring, the center assembly is lifted, the core enters the core barrel, the piston 712 is lifted to reduce the resistance of the core barrel to the core, meanwhile, the lower chamber 1504 is filled with gas, the pressure maintaining piston 1502 moves upwards after receiving the gas pressure in the environment, the gas in the upper chamber 1503 is compressed,

after coring, the self-gravity valve 682 is closed, the coring barrel forms a closed structure, if gas leakage occurs, the gas in the upper chamber 1503 expands, and the gas in the lower chamber 1504 is filled into the coring barrel, so that the pressure loss is reduced, and the pressure maintaining effect is achieved.

Use the utility model discloses equipment is got core and is mainly included following step:

s1, moving the tunnel boring machine 6 to a coring site, and moving the continuous pipe handling device to the rear of the tunnel boring machine 6;

s2, connecting the coring bit 56 with the outer pipe, assembling the outer pipe assembly, connecting the outer pipe assembly and the drill rod 4 by using the related equipment of the tunnel drilling machine 6, and gradually lowering the outer pipe assembly from the ground to the coring position;

s3, assembling the inner pipe assembly on the ground; the continuous conduit 9 extends into the guiding injection integrated mechanism 2 from the reel device 1 through the pipe arrangement device assembly; connecting the continuous conduit 9 to the central rod 71 of the inner tube assembly by means of a quick coupling;

s4, continuously lowering the continuous conduit 9 through the continuous conduit operation device, thereby lowering the inner pipe assembly in the drill pipe 4, wherein the inner pipe assembly reaches the corresponding position of the outer pipe assembly (the latch 622 of the elastic clamping mechanism 62 enters the elastic clamping chamber 511, and the elastic clamping mechanism 62 is located on the suspension ring 512);

s5, starting a ground drilling machine, rotating the drill rod driving device 1204 and performing pressurized drilling, wherein the inner pipe assembly and the outer pipe assembly are matched to perform downward drilling at the moment, and the coring operation is started;

s6, in the coring operation process, the continuous conduit operation device stops lowering the continuous conduit 9, the position of the continuous conduit 9 in the drill rod 4 is kept unchanged, the central component is kept static, and the core enters the barrel along with the downward movement of the inner pipe component and the outer pipe assembly;

in the operation process, under the working condition that the external drilling tool rotates, the core inner cylinder 81 is kept static by the combined action of the multiple anti-rotation mechanisms and the continuous conduit 9, so that the disturbance to the core is reduced;

meanwhile, the piston 712 has a suction effect on the core, so that the resistance of the core entering the barrel is reduced;

s7, after coring is finished, the core inner cylinder 81 is filled with the core, the piston 712 of the central rod 71 moves to the positioning pipe section 812, and coring is finished;

s8, starting the continuous conduit operation device, lifting the continuous conduit 9, enabling the continuous conduit 9 to pull the core barrel upwards through the central rod 71, enabling the anti-skid convex ridge 8131 at the end part of the core inner barrel 81 to block off the core, enabling the pressure maintaining controller to act, lifting the core into the pressure maintaining cabin, and closing the circular valve clack 684 of the gravity valve 682 at the lower end of the pressure maintaining cabin;

s9, continuously lifting the continuous guide pipe 9, when the lifting force is larger than F, the elastic clamping mechanism 62 contracts, the inner pipe assembly is lifted out of the outer pipe assembly, and then the continuous guide pipe 9 is quickly lifted;

s10, after the inner pipe assembly is lifted out of the drill rod 4 through the continuous guide pipe 9, the quick connector at the tail end of the continuous guide pipe 9 is disassembled, the inner pipe assembly is taken down for disassembly, the fidelity cabin part is placed into the transfer cabin, and the upper hanging part is used for the second time.

Example two

The difference between this embodiment and the first embodiment is: as shown in fig. 19, the second sprocket chain clamping assembly 21 of the present embodiment further includes a second tension pulley 24 engaged with the second chain 213, and the second driving pulley 211, the second tension pulley 24 and the second driven pulley 212 are not aligned.

This embodiment is equipped with arc direction nipple joint 5 at the entrance of pipe guide way, and arc direction nipple joint 5 guides continuous pipe 9 more smooth entering pipe guide way. The arc-shaped guide short section 5 is concentric with the guide channel of the guide pipe and has the same radius.

The arc-shaped guide short joint 5 is positioned below the inlet of the guide channel of the guide pipe and has a certain supporting function on the continuous guide pipe 9.

EXAMPLE III

The difference between this embodiment and the first or second embodiment is: as shown in fig. 20, the first push plate 205 is connected with a clamping driving device 22 for moving the first push plate in a radial direction.

The utility model discloses a direction is poured into integration mechanism and is guided and pour into the function into based on an organic whole, has add coalignment again, when effectively reducing equipment height, can ensure not to increase wearing and tearing in the pit again. The utility model discloses be particularly useful for the limited operation environment of space height, for example the operation in coal mine tunnel.

The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (11)

1. A continuous conduit coring apparatus, characterized by: comprises a coring device and a continuous conduit operation device; the coring device comprises an inner pipe assembly and an outer pipe assembly, wherein the inner pipe assembly can be connected with the outer pipe assembly in a clamping manner;

the outer tube assembly comprises an outer tube and a drill bit mounted on the outer tube, and the inner tube assembly comprises an inner tube component and a center rod; the inner pipe assembly comprises a rock core inner cylinder, a rock core outer cylinder and a pressure retaining valve arranged at the bottom of the rock core outer cylinder;

the continuous conduit operation device comprises a continuous conduit and a guide injection integrated mechanism, wherein the continuous conduit is used for lowering and lifting the inner pipe assembly;

the guide injection integrated mechanism comprises a pair of chain wheel and chain clamping assemblies, the chain wheel and chain clamping assemblies are used for clamping the continuous conduit and drawing the continuous conduit to go down a well or pull out the continuous conduit, a conduit guide channel for the continuous conduit to pass through can be formed between the chain wheel and chain clamping assemblies, and an inlet and an outlet of the conduit guide channel are not on the same straight line.

2. The continuous conduit coring apparatus of claim 1, wherein: the outer pipe assembly is connected with the tunnel drilling machine through a drill rod.

3. The continuous conduit coring apparatus of claim 1, wherein: the guide duct guide channel is arc-shaped.

4. The continuous conduit coring apparatus of claim 3, wherein: the two chain wheel and chain clamping assemblies respectively comprise a chain wheel group, a chain, a clamping block arranged on the chain and a push plate used for compressing the clamping block;

the push plate is an arc-shaped plate, and the push plates of the two chain wheel and chain clamping assemblies are concentrically arranged; the push plate of at least one chain wheel and chain clamping assembly is connected with a clamping driving device for driving the chain wheel and chain clamping assembly to move in the radial direction;

the push plates of the two chain wheel and chain clamping assemblies are used for enabling part of clamping blocks of the two chain wheel and chain clamping assemblies to form the guide channel of the conduit, and enabling the part of clamping blocks on the two chain wheel and chain clamping assemblies to clamp the conduit.

5. The continuous conduit coring apparatus of claim 4, wherein: the chain wheel group of the chain wheel and chain clamping assembly positioned on the periphery comprises a driving wheel, a tension wheel and a driven wheel; the chain wheel group of the chain wheel and chain clamping assembly positioned on the inner periphery at least comprises a driving wheel and a driven wheel.

6. The continuous conduit coring apparatus of claims 1, 2, 3, 4 or 5, wherein: it also includes a straightening device for straightening the continuous conduit.

7. The continuous conduit coring apparatus of claim 6, wherein: the straightening device comprises a bracket, a first roller, a second roller, a crank arm and a pressing oil cylinder; the number of the first rollers is at least two, and the first rollers are arranged along the linear direction;

one end of the crank arm is movably connected with the support, the second roller wheel is rotatably installed at the inflection point of the crank arm, and the output end of the pressing oil cylinder is connected with the other end of the crank arm so that a straightening channel is formed between the first roller wheel and the second roller wheel.

8. The continuous conduit coring apparatus of claim 1, wherein: the bottom end of the central rod is fixedly connected with a piston, and a pressure maintaining controller is arranged in the piston;

the pressure maintaining controller comprises a pressure maintaining cylinder, the pressure maintaining cylinder is vertically arranged, a pressure maintaining piston is arranged in the pressure maintaining cylinder, the pressure maintaining piston is in sliding fit with the inner wall of the pressure maintaining cylinder, the pressure maintaining piston divides the pressure maintaining cylinder into an upper cavity and a lower cavity, the lower cavity is communicated with the bottom surface of the piston, and gas is filled in the upper cavity.

9. The continuous conduit coring apparatus of claim 1, wherein: a composite bearing set is arranged between the inner pipe assembly and the central rod, and the central rod comprises a positioning pipe section;

the composite bearing set comprises a base, wherein the base is in a thrust bearing form, the base is arranged in the inner pipe assembly, the inner wall of the base is provided with an annular ball recess, the middle part of the positioning pipe section is circumferentially provided with a plurality of ball holes, the spherical roller is arranged in the ball holes, and the convex part of the spherical roller is matched with the ball recess;

be equipped with first annular protruding stupefied on the well core rod, be equipped with thrust bearing between first annular protruding stupefied and the inner tube subassembly, first annular protruding stupefied is located between two thrust bearing.

10. The continuous conduit coring apparatus of claim 1, wherein: the top of the inner pipe assembly is provided with an elastic clamping mechanism, and the inner wall of the top of the outer pipe assembly is provided with an elastic clamping chamber;

the outer wall of the elastic clamping mechanism is provided with a latch groove, a latch is installed in the latch groove, the bottom of the latch is rotatably connected with the inner wall of the latch groove, a spring is arranged between the top of the latch and the latch groove, and the latch is matched with the elastic clamping chamber.

11. The continuous conduit coring apparatus of claim 1, wherein: the pressure retaining valve is a self-gravity valve, the self-gravity valve comprises an annular valve seat and a circular valve clack, and the edge of the circular valve clack is hinged with the edge of the top surface of the annular valve seat;

the circular valve clack has an elastic structure, when the self-gravity valve is opened, the circular valve clack is in a vertical position, the circular valve clack is arc-shaped, and the circular valve clack is matched with the inner wall of the outer core barrel.

Images