CN214276687U - CO2 fracturing device - Google Patents
CO2 fracturing device Download PDFInfo
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- CN214276687U CN214276687U CN202120143998.6U CN202120143998U CN214276687U CN 214276687 U CN214276687 U CN 214276687U CN 202120143998 U CN202120143998 U CN 202120143998U CN 214276687 U CN214276687 U CN 214276687U
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Abstract
The utility model provides a CO2A fracturing device belongs to the technical field of liquid gas fracturing equipment. CO22Fracturing device, comprising: an upper cover of the liquid storage tank and the liquid storage tank, wherein the opening of the liquid storage tank is hermetically sleeved with one end of the upper cover of the liquid storage tank, and the liquid storage tank is used for containing the heating agent and the liquid CO2A lead is arranged in the liquid storage tank, one end of the lead is connected with the heating agent, and the other end extends outThe liquid storage tank is used for being connected with the blasting control equipment, a through hole is formed in the upper cover of the liquid storage tank, one end of the one-way valve assembly is communicated with the liquid storage tank through the through hole, the other end of the one-way valve assembly is hermetically connected with the hollow connecting rod, a self-locking assembly is further sleeved on the hollow connecting rod, and the part, extending out of the upper cover of the liquid storage tank, of the one-way valve assembly is accommodated in the self-locking assembly. The method can effectively improve CO2The safety and the working efficiency of the gas fracturing device in the installation and blasting processes are improved.
Description
Technical Field
The utility model relates to a liquid gas send and splits equipment technical field particularly, relates to a CO2Fracturing device.
Background
CO2Fracturing equipment utilizing liquid CO2Heated to gasify and expand, and then quickly release high-pressure CO2So as to achieve the purpose of breaking rocks or breaking coal. In the prior art, CO2The first type of the fracturing equipment is a traditional energy release sheet type and mainly comprises a filling head, a heating agent (or an activator), a liquid storage tank, an energy release sheet and an energy release head, wherein the liquid storage tank is a steel pipe with the wall thickness of about 20mm, and when the fracturing equipment is used, liquid CO is firstly poured into the liquid storage tank at a construction destination2Then send into the drilling through the guide bar with the equipment that splits to utilize gravel packing, connect the controlgear at last and blast, and the liquid storage pot repeatedly usable. The second is disposable consumable cracking equipment, which mainly comprises a filling port, a heating agent and a liquid storage tank, wherein when in use, liquid CO is firstly filled into the liquid storage tank at a construction destination2The fracturing equipment is sent into a drill hole through the guide rod, gravel is filled and vibrated compactly, and finally the control equipment is connected for blasting.
CO of the above two types2The fracturing equipment is used to pack and compact the equipment in the borehole with gravel, but in liquid CO2In the process of heating, gasifying and expanding, the CO put into the drilled hole is subjected to2The fracturing equipment is simply gravel packed, the friction between the gravel layer and the borehole is small, and when CO is used2When the upward thrust force borne by the fracturing equipment is greater than the friction force between the plugging material and the inner wall of the drilled hole, the safety accident of pipe flying is easy to occur. In addition, the above two types of CO2The cracking equipment adopts the method that liquid CO is firstly poured into a liquid storage tank2And placing CO into the borehole2Fracturing apparatus, injecting liquid CO2After CO2The fracturing equipment is easy to have the safety accident of liquid storage tank bursting in the processes of storage, transportation and installation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a CO2Cracking device for solving the problem of CO in the prior art2The technical problem of safety accidents easily occurs in the installation and blasting processes of the fracturing device.
The embodiment of the utility model is realized like this:
the embodiment of the utility model provides a CO2Fracturing device, comprising: an upper cover of the liquid storage tank and the liquid storage tank, wherein the opening of the liquid storage tank is hermetically sleeved with one end of the upper cover of the liquid storage tank, and the liquid storage tank is used for containing the heating agent and the liquid CO2The explosion control device comprises a liquid storage tank, a wire, a one-way valve assembly, a hollow connecting rod and a self-locking assembly, wherein the liquid storage tank is internally provided with the wire, one end of the wire is connected with a heating agent, the other end of the wire extends out of the liquid storage tank and is used for being connected with explosion control equipment, the upper cover of the liquid storage tank is provided with a through hole, one end of the one-way valve assembly is communicated with the liquid storage tank through the through hole, the other end of the one-way valve assembly is hermetically connected with the hollow connecting rod, the hollow connecting rod is further sleeved with the self-locking assembly, and the part of the one-way valve assembly, which extends out of the upper cover of the liquid storage tank, is accommodated in the self-locking assembly.
Optionally, the liquid storage tank is a flexible tank.
Optionally, the self-locking device further comprises a rubber pad and a pressing plate which are sequentially arranged between the upper cover of the liquid storage tank and the self-locking assembly, the other end of the one-way valve assembly penetrates through the rubber pad and the pressing plate to be in sealing connection with the hollow connecting rod, and air pressure in the liquid storage tank rises to push the upper cover of the liquid storage tank to extrude the rubber pad to expand transversely.
Optionally, the auto-lock subassembly includes stopper and the centrum embolism of mutually supporting, offers the bell mouth that corresponds with centrum embolism outer wall in the stopper, and the main aspects of bell mouth are towards the liquid storage pot upper cover, and the stopper includes a plurality of fan-shaped stoppers, and a plurality of fan-shaped stoppers move in the bell mouth through the centrum embolism along the circumference setting of centrum embolism to promote a plurality of fan-shaped stoppers along the direction motion that deviates from the bell mouth.
Optionally, the outer wall of the limiting block is circumferentially provided with a plurality of sawtooth rings.
Optionally, the upper cover of the liquid storage tank comprises a coaxially arranged upper cover outer ring of the liquid storage tank, an inner ring of the upper cover of the liquid storage tank, an inner ring plug of the upper cover of the liquid storage tank, a wedge-shaped section ring and a pressing ring, one side, facing the bottom of the drilled hole, of the inner ring plug of the upper cover of the liquid storage tank is fixedly connected with the heating agent, a stepped through hole is formed in the inner ring of the upper cover of the liquid storage tank, the large end of the stepped through hole is fixedly sleeved on the inner ring plug of the upper cover of the liquid storage tank, the small end of the stepped through hole is communicated with an outlet of the one-way valve component, a liquid injection hole is formed in the edge of the inner ring plug of the upper cover of the liquid storage tank and is communicated with the liquid storage tank, the outer ring of the upper cover of the liquid storage tank is sleeved on the inner ring outer wall of the upper cover of the liquid storage tank, the outer ring of the upper cover of the liquid storage tank is in a wedge shape, the wedge-shaped section ring and the opening end of the flexible tank is located between the outer ring of the upper cover of the liquid storage tank and the inner wall of the wedge-shaped section ring.
Optionally, the one-way valve component comprises a liquid filling nozzle, a ball body and a spring which are sequentially arranged, one end of the liquid filling nozzle penetrates through the rubber pad and the pressing plate to be connected with the hollow connecting rod in a sealing mode, the other end of the liquid filling nozzle is communicated with the small end of the stepped through hole, the spring is fixedly arranged on one side, deviating from the heating agent, of the ring plug in the upper cover of the liquid storage tank, and the ball body is located between the liquid filling nozzle and the spring and is abutted against the small end of the stepped through hole to seal the small end of the stepped through hole.
Optionally, the one-way valve assembly is a one-way valve, and the one-way valve is communicated towards the large end of the stepped through hole.
Optionally, the cavity connecting rod is provided with two spacing grooves towards the one end of liquid storage pot upper cover relatively, and the spacing groove includes mutually perpendicular and the horizontal groove and the vertical groove of intercommunication, and vertical groove is parallel with the extending direction of cavity connecting rod, and the one end that the liquid filling mouth deviates from the liquid storage pot upper cover is provided with two spacing posts relatively, and two spacing posts are inserted respectively through vertical groove and are located the horizontal inslot to make cavity connecting rod and liquid filling mouth can dismantle and be connected.
Optionally, still include dowel steel, steel sheet and nut, the steel sheet is used for the lid to establish on the opening of drilling, and the dowel steel is located between steel sheet and the stopper, and the one end outer wall that the prefill mouth was kept away from to the cavity connecting rod is provided with the external screw thread, and the cavity connecting rod stretches into the auto-lock subassembly through steel sheet and dowel steel, stretches out the cavity connecting rod and the nut threaded connection of drilling.
The utility model discloses beneficial effect includes:
the embodiment of the utility model provides a pair of CO2Fracturing device, the device includes: an upper cover of the liquid storage tank and the liquid storage tank, wherein the opening of the liquid storage tank is hermetically sleeved with one end of the upper cover of the liquid storage tank, and the liquid storage tank is used for containing the heating agent and the liquid CO2The explosion control device comprises a liquid storage tank, a wire, a one-way valve assembly, a hollow connecting rod and a self-locking assembly, wherein the liquid storage tank is internally provided with the wire, one end of the wire is connected with a heating agent, the other end of the wire extends out of the liquid storage tank and is used for being connected with explosion control equipment, the upper cover of the liquid storage tank is provided with a through hole, one end of the one-way valve assembly is communicated with the liquid storage tank through the through hole, the other end of the one-way valve assembly is hermetically connected with the hollow connecting rod, the hollow connecting rod is further sleeved with the self-locking assembly, and the part of the one-way valve assembly, which extends out of the upper cover of the liquid storage tank, is accommodated in the self-locking assembly. The gas fracturing device in the embodiment is firstly installed in the drill hole, and then liquid CO is introduced into the liquid storage tank through the hollow connecting rod2A one-way valve assembly is arranged between the hollow connecting rod and the liquid storage tank and leads the liquid CO introduced from the hollow connecting rod to flow into the one-way valve assembly2Can enter into the liquid storage tank, and CO in the liquid storage tank2Can not reversely enter the hollow connecting rod, thereby effectively reducing CO2Send danger of splitting device in transportation and installation, in addition, through the cover is equipped with from locking Assembly on the cavity connecting rod, from locking Assembly can carry out the shutoff to the liquid storage pot of holding in the drilling to it packs and vibrates closely knit with the shutoff liquid storage pot to replace among the prior art through the gravel, because frictional force between gravel layer and the drilling inner wall is less, liquid CO in the liquid storage pot2In the heating gasification expansion process, the safety accident of flying pipes is easy to occur, and in the embodiment, the self-locking assembly is adopted to plug the liquid storage tank, the self-locking assembly can be blocked with the inner wall of the drill hole, relative movement cannot occur, and liquid CO can be effectively reduced2Possibility of flying tube safety accident in the process of heat absorption expansion.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 shows CO provided by an embodiment of the present invention2The structure schematic diagram of the fracturing device;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
FIG. 3 is an enlarged schematic view of the present invention at B of FIG. 1;
FIG. 4 shows CO provided by an embodiment of the present invention2The structure of the hollow connecting rod in the fracturing device is schematically shown.
Icon: 100-CO2A fracturing device; 111-stepped vias; 112-upper cover of liquid storage pot; 1121-inner ring of upper cover of liquid storage pot; 1122-outer ring of upper cover of liquid storage tank; 113-an inner ring plug of an upper cover of the liquid storage tank; 114-a wedge-section ring; 115-liquid injection hole; 116-a pressure ring; 120-a liquid storage tank; 121-a heat generating agent; 131-a spring; 132-a sphere; 133-a liquid filling nozzle; 1331-a limiting column; 1332-sealing ring; 140-a self-locking assembly; 141-a limiting block; 1411-a fan-shaped stopper; 142-vertebral body embolism; 143-rubber band; 151-pressing plate; 152-a rubber pad; 160-hollow connecting rod; 161-a nut; 162-a force transfer column; 163-steel plate; 164-a limit groove; 1641-transverse grooves; 1642-longitudinal grooves; 200-drilling.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 1 is a schematic structural diagram of the CO2 fracturing device 100 provided by the present invention, please refer to fig. 1, an embodiment of the present invention provides a CO2 fracturing device 100, including: the explosion-proof device comprises a liquid storage tank upper cover 112 and a liquid storage tank 120, wherein an opening of the liquid storage tank 120 is in sealed sleeve joint with one end of the liquid storage tank upper cover 112, a heating agent 121 and liquid CO2 are contained in the liquid storage tank 120, a lead is arranged in the liquid storage tank 120, one end of the lead is connected with the heating agent 121, the other end of the lead extends out of the liquid storage tank 120 and is used for being connected with a controlled explosion device, a through hole is formed in the liquid storage tank upper cover 112, one end of a one-way valve assembly is communicated with the liquid storage tank 120 through the through hole, the other end of the one-way valve assembly is in sealed connection with a hollow connecting rod 160, a self-locking assembly 140 is further sleeved on the hollow connecting rod 160, and the part of the one-way valve assembly extending out of the liquid storage tank upper cover 112 is contained in the self-locking assembly 140.
The liquid storage tank 120 is used for containing the heating agent 121 and liquid CO2One end of the lead is connected with the heating agent 121, and the other end of the lead extends out of the drill hole 200 to be connected with the controlled blasting equipment when neededDuring blasting, the blasting equipment is controlled to heat the heating agent 121 through the conducting wire, so that the liquid CO is heated2Absorbs heat and expands rapidly to achieve the purpose of breaking rock mass.
The self-locking assembly 140 is used for locking the storage tank 120 below the self-locking assembly 140 and CO in the storage tank 1202Is sealed off in the space formed by self-locking assembly 140 and bore 200. That is, the liquid CO in the reservoir 1202In the process of thermal gasification expansion, CO2Is less than the friction between the self-locking assembly 140 and the inner wall of the borehole 200, thereby effectively reducing the CO2The possibility of a safety accident of the flying pipe due to thermal expansion.
The one-way valve component can conduct in one direction to enable liquid CO2Can enter the reservoir 120 through the hollow connecting rod 160, but the gas in the reservoir 120 cannot pass through the one-way valve assembly to the inlet rod.
For example, liquid CO2When the liquid CO in the liquid storage tank 120 is present2After the endothermic expansion, the pressure in the liquid storage tank 120 is rapidly increased to 200-300MPa, and the rock can be blasted by the strong pressure. In this embodiment, the liquid CO performs the blasting function2And is not limited thereto, and in other embodiments, other gases capable of expanding by heat may be used.
From above, the device includes: a liquid storage tank upper cover 112 and a liquid storage tank 120, wherein the opening of the liquid storage tank 120 is hermetically sleeved with one end of the liquid storage tank upper cover 112, and the liquid storage tank 120 is used for accommodating a heating agent 121 and liquid CO2A lead is arranged in the liquid storage tank 120, one end of the lead is connected with the heating agent 121, the other end of the lead extends out of the liquid storage tank 120 and is used for being connected with blasting control equipment, a through hole is arranged on the upper cover 112 of the liquid storage tank, one end of a one-way valve component is communicated with the liquid storage tank 120 through the through hole, the other end of the one-way valve component is hermetically connected with a hollow connecting rod 160, a self-locking component 140 is further sleeved on the hollow connecting rod 160, and the part of the one-way valve component extending out of the upper cover 112 of the liquid storage tank is accommodated in the self-locking component 140. CO in this example2The fracturing device 100 is first installed in the bore 200 and then liquid CO is introduced into the reservoir 120 through the hollow connecting rod 1602Thereby effectively reducingLow CO2The dangers of the fracturing device 100 during shipping and installation. A one-way valve assembly is provided between the hollow connecting rod 160 and the reservoir 120, which allows the liquid CO to be introduced from the hollow connecting rod 1602Can enter the liquid storage tank 120, and CO in the liquid storage tank 1202Cannot enter the hollow connecting rod 160 reversely. In addition, the self-locking assembly 140 is sleeved on the hollow connecting rod 160, the self-locking assembly 140 can be used for plugging the liquid storage tank 120 accommodated in the drill hole 200 to replace the prior art that the liquid storage tank 120 is plugged and compacted by gravel packing and vibration, and because the friction force between the gravel layer and the inner wall of the drill hole 200 is small, the liquid CO in the liquid storage tank 120 is small2In the process of heating, gasifying and expanding, pipe flying accidents are easy to happen, in the embodiment, the self-locking assembly 140 is adopted to plug the liquid storage tank 120, the self-locking assembly 140 can be sealed from the inner wall of the drill hole 200, relative movement cannot occur, and liquid CO can be effectively reduced2Possibility of flying tube safety accident in the process of heat absorption expansion.
Optionally, the fluid reservoir 120 is a flexible canister.
Light-weight and liquid CO flexible tank2When the flexible tank body enters the flexible tank body, the flexible tank body deforms and is in close contact with the inner wall of the drill hole 200, the upper cover, the rubber pad 152, the pressing plate 151 and the like of the liquid storage tank above the flexible tank body are pushed to move upwards, in the process of moving upwards, the self-locking assembly 140 is blocked, so that the rubber pad 152 and the pressing plate 151 below the self-locking assembly 140 cannot move upwards continuously, and CO is discharged from the inner wall of the drill hole2Under the opposing force of pressure and self-locking assembly 140, rubber pad 152 laterally deforms to seal borehole 200, while the flexible canister also improves the space utilization of borehole 200.
Alternatively, CO2The fracturing device 100 further comprises a rubber pad 152 and a pressing plate 151 which are sequentially arranged between the upper cover 112 of the liquid storage tank and the self-locking assembly 140, the other end of the one-way valve assembly penetrates through the rubber pad 152 and the pressing plate 151 to be in sealing connection with the hollow connecting rod 160, and air pressure in the liquid storage tank 120 is increased to push the upper cover of the liquid storage tank to extrude the rubber pad 152 to expand transversely.
As can be seen from the above, the fluid reservoir 120 is a flexible canister. Self-locking setMember 140 may abut the inner wall of bore 200 such that self-locking assembly 140 cannot move relative to the inner wall of bore 200. Illustratively, the position of the self-locking assembly 140 relative to the inner wall of the borehole 200 is adjusted to lock the self-locking assembly 140 and the inner wall of the borehole 200, and then liquid CO is introduced into the hollow connecting rod 1602Liquid CO2Enters the liquid storage tank 120 through the one-way valve assembly, and then controls the blasting equipment to control the heating agent 121 to heat through a lead so as to ensure that CO in the liquid storage tank 120 is heated2The heat absorption and the rapid expansion are performed, the pressure in the liquid storage tank 120 rapidly rises to 200-300MPa, the strong pressure in the liquid storage tank 120 can push the upper cover 112 of the liquid storage tank to move towards the opening direction of the drill hole 200, the strong pressure can apply an acting force to the rubber pad 152 by pushing the upper cover 112 of the liquid storage tank, so that the rubber pad 152 is laterally expanded, but the self-locking assembly 140 cannot move, so that the acting force of the strong pressure is reversely applied to the rubber pad 152 through the pressing plate 151, the rubber pad 152 is compressed and laterally expanded until the outer edge of the rubber pad 152 is completely abutted against the inner wall of the drill hole 200, and the purpose of sealing the space below the rubber pad 152 is achieved. Thus, the possibility of occurrence of a flying management accident can be effectively reduced, and liquid CO can be prevented2CO generation during expansion2And (4) leakage.
Referring to fig. 1 and fig. 2 in combination, optionally, the self-locking assembly 140 includes a limiting block 141 and a cone plug 142 that are matched with each other, a tapered hole corresponding to an outer wall of the cone plug 142 is formed in the limiting block 141, a large end of the tapered hole faces the liquid storage tank upper cover 112, the limiting block 141 includes a plurality of fan-shaped limiting blocks 1411, the plurality of fan-shaped limiting blocks 1411 are arranged along a circumferential direction of the cone plug 142, and move in the tapered hole through the cone plug 142 to push the plurality of fan-shaped limiting blocks 1411 to move in a direction away from the tapered hole.
The stop block 141 includes a plurality of fan-shaped stop blocks 1411, and it should be understood that the plurality of fan-shaped stop blocks 1411 refers to two or more fan-shaped stop blocks 1411.
The outer walls of the plurality of fan-shaped stoppers 1411 abut the inner wall of the borehole 200 at the CO2When the pressure pushes the vertebral body plug 142 to move towards the opening direction of the drill hole 200, the vertebral body plug 142 move upwards in the limiting hole, and in the process of moving upwards the vertebral body plug 142, the fan-shaped limiting blocks 1411 all move in the direction departing from the tapered hole, that is, the fan-shaped limiting blocks 1411 spread outwards under the resistance of the vertebral body plug 142, and due to the limitation of the peripheral rock of the drill hole, the limiting blocks 141 are difficult to move relative to the inner wall of the drill hole 200.
For example, referring to fig. 1 and fig. 2, three fan-shaped stoppers 1411 are provided, two ends of the outer wall of the three fan-shaped stoppers 1411 are respectively bound by the rubber bands 143 to prevent the fan-shaped stoppers from scattering, and liquid CO is introduced into the hollow connecting rod 1602Before, the position of the limiting block 141 is adjusted, so that the outer walls of the three fan-shaped limiting blocks 1411 are completely abutted against the inner wall of the drill hole 200, and the outer wall of the cone plug 142 is closely attached to the inner wall of the tapered hole, so that the liquid CO2The pushing distance of the pressure generated in the process of absorbing the expansion to the vertebral body plug 142 is smaller, and the stability of the whole device is higher.
Referring to fig. 1, optionally, a plurality of sawtooth rings are arranged on the outer wall of the limiting block 141 in the circumferential direction, so that the friction between the outer wall of the limiting block 141 and the inner wall of the drill hole 200 is effectively increased, and the plugging effect of the self-locking assembly 140 on the drill hole 200 is improved.
Optionally, the upper cover 112 of the liquid storage tank comprises an outer ring 1122 of the upper cover of the liquid storage tank, an inner ring 1121 of the upper cover of the liquid storage tank, an inner ring plug 113 of the inner ring 113 of the upper cover of the liquid storage tank, the upper cover 112 of the liquid storage tank, a wedge-shaped section ring 114 and a pressing ring 116, which are coaxially arranged, one side of the inner ring plug 113 of the upper cover of the liquid storage tank, which faces the bottom of the drilling hole 200, is fixedly connected with the heating agent 121, the inner ring 1121 of the upper cover of the liquid storage tank is provided with a stepped through hole 111, the large end of the stepped through hole 111 is fixedly sleeved on the inner ring plug 113 of the upper cover of the liquid storage tank, the small end of the stepped through hole is communicated with the outlet of the one-way valve assembly, the edge of the inner ring plug 113 of the upper cover of the liquid storage tank is provided with a liquid injection hole 115, the liquid injection hole 115 is communicated with the liquid storage tank 120, the outer ring 1122 of the upper cover of the liquid storage tank is sleeved on the outer wall of the inner ring 1121 of the upper cover of the liquid storage tank, the outer wall of the outer ring 1122 of the upper cover of the liquid storage tank is wedge-shaped, the wedge-shaped section ring 114 and the press ring 116 are respectively sleeved on the outer wall of the outer ring 1122 of the upper cover of the liquid storage tank, and the opening end of the flexible tank body is positioned between the outer wall of the outer ring 1122 of the upper cover of the liquid storage tank and the inner wall of the wedge-shaped section ring 114.
Specifically, referring to fig. 1, the upper cover 112 of the liquid storage tank includes an inner ring 1121 and an outer ring 1122, wherein the outer wall of the inner ring 1121 is in threaded connection with the inner wall of the outer ring 1122, a stepped through hole 111 is formed in the inner ring 1121, an inner ring plug 113 of the upper cover of the liquid storage tank is located at the large end of the stepped through hole 111 and is in threaded connection with the large end of the stepped through hole 111, a heating agent 121 is fixedly connected to one side of the inner ring plug 113 of the upper cover of the liquid storage tank facing the liquid storage tank 120, a plurality of liquid injection holes 115 are formed in the edge of the inner ring plug 113 of the upper cover of the liquid storage tank, and the heating agent 121 is located among the liquid injection holes 115 to prevent adding liquid CO into the liquid storage tank 1202In time, the structure of the heat generating agent 121 is damaged so that the heat generating agent 121 fails. A spring 131 seat is arranged on one side of the inner ring plug 113 of the upper cover of the liquid storage tank, which deviates from the liquid storage tank 120, a spring 131 is fixedly arranged on the spring 131 seat, and a ball 132 on the other end of the spring 131 is abutted against the small end of the stepped through hole 111, so that CO in the liquid storage tank 120 is enabled to be in contact with the small end of the stepped through hole 1112The stepped through-hole 111 cannot enter the hollow connecting rod 160, and the stepped through-hole 111 and the pour hole 115 form a through-hole. Liquid storage pot upper cover outer ring 1122 outer wall is the wedge, the direction setting of liquid storage pot 120 is faced towards to the main aspects of liquid storage pot 120 of liquid storage pot upper cover outer ring 1122, the direction setting that the tip deviates from liquid storage pot 120, liquid storage pot 120 is flexible jar body, the pouring opening cover of flexible jar body is established at the main aspects department of liquid storage pot upper cover outer ring 1122, still overlap in proper order on liquid storage pot upper cover outer ring 1122 and be equipped with wedge cross-section ring 114 and clamping ring 116, clamping ring 116 and liquid storage pot upper cover outer ring 1122 threaded connection, clamping ring 116 supports tight wedge cross-section ring 114 so that sealed fixed connection between flexible jar body and the liquid storage pot upper cover outer ring 1122.
Referring to fig. 1 and fig. 3, optionally, the one-way valve assembly includes a liquid filling nozzle 133, a ball 132 and a spring 131, which are sequentially disposed, one end of the liquid filling nozzle 133 passes through a rubber pad 152 and a pressing plate 151 to be hermetically connected to the hollow connecting rod 160, and the other end of the liquid filling nozzle is communicated with the small end of the stepped through hole 111, the spring 131 is fixedly disposed on a side of the inner ring plug 113 of the upper cover of the liquid storage tank away from the heating agent 121, and the ball 132 is disposed between the liquid filling nozzle 133 and the spring 131 and abuts against the small end of the stepped through hole 111 to seal the small end of the stepped through hole 111.
Specifically, a sealing ring 1332 is mounted on an inner wall of the hollow connecting rod 160 facing one end of the liquid filling nozzle 133, and the sealing ring 1332 is used for sealing the liquid filling nozzle 133 and the inner wall of the hollow connecting rod 160. Ball 132 is located between liquid filling nozzle 133 and spring 131 when liquid CO is present2When the hollow connecting rod 160 is inserted into the liquid storage tank 120, the pressure of the gas pushes the ball 132 abutting against the stepped through hole 111 away, so as to make the liquid CO2Enters the large end of the stepped through hole 111 through the small end of the stepped through hole 111 and enters the liquid storage tank 120 through the liquid injection hole 115 when the liquid CO is in the liquid state2When the passage is completed, the elastic force of the spring 131 pushes the ball 132 to abut against the small end of the stepped through hole 111, so as to seal the stepped through hole 111.
Optionally, the check valve assembly is a check valve, and the check valve is conducted towards the large end of the stepped through hole 111. The one-way valve enables liquid CO2The gas in the liquid storage tank 120 can not enter the hollow connecting rod 160 when the gas is introduced into the liquid storage tank 120, and the one-way valve is a high pressure resistant one-way valve.
Referring to fig. 4, optionally, two limiting grooves 164 are oppositely disposed at one end of the hollow connecting rod 160 facing the upper cover of the liquid storage tank, each limiting groove 164 includes a transverse groove 1641 and a longitudinal groove 1642 which are perpendicular to each other and are communicated with each other, the longitudinal groove 1642 is parallel to the extending direction of the hollow connecting rod 160, two limiting columns 1331 are oppositely disposed at one end of the liquid filling nozzle 133 facing away from the upper cover of the liquid storage tank, and the two limiting columns 1331 are respectively inserted into the transverse grooves 1641 through the longitudinal grooves 1642, so that the hollow connecting rod 160 and the liquid filling nozzle 133 are detachably connected.
Specifically, after the upper cover 112 of the liquid storage tank, the liquid filling nozzle 133, the rubber pad 152 and the pressing plate 151 are assembled, the hollow connecting rod 160 is sleeved on the liquid filling nozzle 133, one end of the hollow connecting rod 160 is provided with a limiting groove 164, the limiting groove 164 comprises a transverse groove 1641 and a longitudinal groove 1642 which are perpendicular to each other and are communicated with each other, two limiting columns 1331 arranged on the liquid filling nozzle 133 respectively enter from one end of the longitudinal groove 1642 at the end part of the hollow connecting rod 160, when the limiting columns 1331 reach the other end of the longitudinal groove 1642, the hollow connecting rod 160 is rotated, the two limiting columns 1331 respectively enter the transverse groove 1641, so that the hollow connecting rod 160 is fixedly connected with the liquid filling nozzle 133, when liquid gas is introduced into the liquid storage tank 120, the limiting columns 1 on the liquid filling nozzle 133 are moved to the longitudinal groove 1642 by rotating the hollow connecting rod 160, and the hollow connecting rod 160 is convenient to detach.
Optionally, the CO2 fracturing device 100 further includes a force transmission column 162, a steel plate 163 and a nut 161, the steel plate 163 is used for covering the opening of the drill hole 200, the force transmission column 162 is located between the steel plate 163 and the limiting block 141, an external thread is provided on an outer wall of one end of the hollow connecting rod 160 away from the liquid filling nozzle 133, the hollow connecting rod 160 extends into the self-locking assembly 140 through the steel plate 163 and the force transmission column 162, and the hollow connecting rod 160 extending out of the drill hole 200 is in threaded connection with the nut 161.
When the liquid gas in the liquid storage tank 120 is completely introduced, the nut 161 is loosened and the hollow connecting rod 160 is rotated to make the hollow connecting rod 160 separated from the limiting column 1331 on the liquid filling nozzle 133, then the nut 161, the hollow connecting rod 160 and the force transmission column 162 are taken down to control the blasting, only the flexible tank body and the heating agent 121 are damaged in the blasting process, and other components cannot be damaged and can be recycled.
In addition, when the heat generating agent 121 cannot cause the liquid storage tank 120 to be cracked due to unexpected failure, a cracking device can be additionally drilled beside the original drilling hole 200, and the rock body and the original CO are cracked through the cracking device2The flexible tank body in the fracturing equipment can automatically burst due to the relief of the confining pressure, thereby further improving CO2Safety when an accident occurs to the fracturing equipment.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. CO (carbon monoxide)2Fracturing device, its characterized in that includes: the liquid storage tank comprises an upper cover and a liquid storage tank, wherein an opening of the liquid storage tank and one of the upper cover of the liquid storage tankThe end is sealed and sleeved, and the liquid storage tank is used for containing a heating agent and liquid CO2The explosion control device comprises a liquid storage tank, wherein a wire is arranged in the liquid storage tank, one end of the wire is connected with a heating agent, the other end of the wire extends out of the liquid storage tank and is used for being connected with explosion control equipment, a through hole is formed in an upper cover of the liquid storage tank, one end of a one-way valve assembly is connected with the liquid storage tank through the through hole, the other end of the one-way valve assembly is connected with a hollow connecting rod in a sealing mode, a self-locking assembly is further sleeved on the hollow connecting rod, and the part.
2. The CO of claim 12The fracturing device is characterized in that the liquid storage tank is a flexible tank body.
3. CO according to claim 22The fracturing device is characterized by further comprising a rubber pad and a pressing plate which are sequentially arranged between the upper cover of the liquid storage tank and the self-locking assembly, the other end of the one-way valve assembly penetrates through the rubber pad and the pressing plate and is in sealing connection with the hollow connecting rod, and air pressure in the liquid storage tank rises to push the upper cover of the liquid storage tank to extrude the rubber pad to transversely expand.
4. CO according to claim 32Send and split device, its characterized in that, the auto-lock subassembly is including the stopper and the centrum embolism of mutually supporting, seted up in the stopper with the bell mouth that centrum embolism outer wall corresponds, just the main aspects orientation of bell mouth the liquid storage pot upper cover, the stopper includes a plurality of fan-shaped stoppers, and is a plurality of fan-shaped stopper is followed the circumference setting of centrum embolism, through the centrum embolism is in the bell mouth internal motion is in order to promote a plurality of fan-shaped stopper is along deviating from the direction motion at bell mouth center.
5. CO according to claim 42The fracturing device is characterized in that a plurality of sawtooth rings are arranged on the outer wall of the limiting block in the circumferential direction.
6. CO according to claim 52The fracturing device is characterized in that the upper cover of the liquid storage tank comprises a coaxially arranged outer ring of the upper cover of the liquid storage tank, an inner ring plug of the upper cover of the liquid storage tank, a wedge-shaped section ring and a pressing ring, wherein the inner ring plug of the upper cover of the liquid storage tank faces one side of the liquid storage tank and is fixedly connected with the heating agent, a step through hole is formed in the inner ring of the liquid storage tank, the large end of the step through hole is fixedly sleeved on the plug of the inner ring of the upper cover of the liquid storage tank, the small end of the step through hole is communicated with the outlet of the one-way valve component, a liquid injection hole is formed in the edge of the inner ring plug of the upper cover of the liquid storage tank, the liquid injection hole is communicated with the liquid storage tank, the outer ring of the upper cover of the liquid storage tank is sleeved on the outer wall of the inner ring of the upper cover of the liquid storage tank, the outer ring of the wedge-shaped section ring and the pressing ring of the outer ring of the upper cover of the flexible tank are respectively sleeved on the outer ring of the wedge-shaped section Between the inner walls of (a).
7. CO according to claim 62Send and split device, its characterized in that, one-way valve subassembly is including the prefill mouth, spheroid and the spring that set gradually, the one end of prefill mouth is passed the rubber pad with the clamp plate with cavity connecting rod sealing connection, the other end with the tip intercommunication of ladder through-hole, the spring is fixed to be set up liquid storage pot upper cover inner ring end cap deviates from one side of heating agent, the spheroid is located prefill mouth with between the spring, and with the tip butt of ladder through-hole, in order to seal the tip of ladder through-hole.
8. CO according to claim 62The fracturing device is characterized in that the one-way valve assembly is a one-way valve, and the one-way valve is communicated towards the large end of the stepped through hole.
9. The CO of claim 72Fracturing device, characterized in that the hollow connecting rod faces toThe one end of stating the liquid storage pot upper cover is provided with two spacing grooves relatively, the spacing groove includes mutually perpendicular and the horizontal groove and the vertical groove of intercommunication, vertical groove with the extending direction of cavity connecting rod is parallel, prefill mouth deviates from the one end of liquid storage pot upper cover is provided with two spacing posts relatively, two spacing post is respectively through vertical groove is inserted and is located the horizontal inslot, so that the cavity connecting rod with prefill mouth can dismantle the connection.
10. The CO of claim 72Send and split device, its characterized in that still includes biography power post, steel sheet and nut, the biography power post is located the steel sheet with between the stopper, the cavity connecting rod is kept away from the one end outer wall of liquid filling mouth is provided with the external screw thread, the cavity connecting rod pass through the steel sheet with the biography power post stretches into the auto-lock subassembly stretches out the steel sheet the cavity connecting rod with nut threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120143998.6U CN214276687U (en) | 2021-01-19 | 2021-01-19 | CO2 fracturing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120143998.6U CN214276687U (en) | 2021-01-19 | 2021-01-19 | CO2 fracturing device |
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| Publication Number | Publication Date |
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| CN214276687U true CN214276687U (en) | 2021-09-24 |
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| Country | Link |
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| CN (1) | CN214276687U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880485A (en) * | 2021-01-19 | 2021-06-01 | 中国科学院武汉岩土力学研究所 | CO (carbon monoxide)2Fracturing device |
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2021
- 2021-01-19 CN CN202120143998.6U patent/CN214276687U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880485A (en) * | 2021-01-19 | 2021-06-01 | 中国科学院武汉岩土力学研究所 | CO (carbon monoxide)2Fracturing device |
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