An impact device and an impact method

Abstract

The application provides an impact device and an impact method, and relates to the technical field of building engineering. The impact device comprises a first arm guard, an impact piece, a supply assembly and a phase change assembly, the impact piece and the inner wall surface of part of the first arm guard form a containing cavity; the supply end of the phase change assembly is communicated with the containing cavity, the phase change medium generated by the phase change assembly pushes the impact piece to move away from the containing cavity, and the impact speed of the impact piece is improved; the supply assembly provides filling medium into the containing cavity, and then pushes the impact piece to keep at an impact position; the impact method can repeatedly execute the steps of providing the phase change medium by the phase change assembly and providing the filling medium by the supply assembly, the phase change assembly can release the phase change medium for multiple times, and provides power for the impact of the impact piece; in the multiple impact processes of the impact piece, the filling medium transported into the containing cavity by the supply assembly transmits the impact force of the phase change reaction, and the moving distance of the phase change medium is reduced; the impact method realizes step-by-step segmented impact, and improves the energy utilization rate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of construction engineering, and in particular to an impact device and an impact method. BACKGROUND

[0002] With the development of the construction industry, the construction of pile foundations is becoming increasingly important. In the process of constructing pile foundations, pile drivers are needed. A pile driver is a pile driving machine that uses impact force to drive a pile into the ground.

[0003] In the prior art, a pile driver includes a pile hammer, a pile frame, and auxiliary equipment. Pile hammers can be divided into drop hammers, steam hammers, diesel hammers, and hydraulic hammers according to the source of the driving force. Most pile drivers currently use hydraulic hammers to perform impact work. The core principle of a pile driver using a hydraulic hammer is to lift the hydraulic hammer to accumulate gravitational potential energy, and then release the hydraulic hammer. The hydraulic hammer accelerates in free fall and hits the upper end of the pile, thereby feeding the pile into the soil. The above process is repeated to completely drive the pile into the soil.

[0004] However, the existing pile driver has the problems of low efficiency and high energy consumption. SUMMARY

[0005] The present application provides an impact device and an impact method, which improves the impact speed of the impact device and realizes step-by-step segmented impact of the impact device. The impact method improves the working efficiency of the impact device.

[0006] In a first aspect, the present application provides an impact device, comprising a first arm, an impact piece, a supply assembly, and a phase change assembly. The first arm has a first arm cavity, and the impact piece is slidingly connected in the first arm cavity.

[0007] In the first arm cavity, the impact piece and the inner wall surface of part of the first arm form a containing cavity, and the supply end of the phase change assembly and the supply end of the supply assembly are both communicated with the containing cavity.

[0008] The phase change assembly is configured to provide phase change medium to the containing cavity to move the impact piece in a direction away from the containing cavity to an impact position of the impact piece. The supply assembly is configured to provide filling medium to the containing cavity when the impact piece moves to the impact position to keep the impact piece at the impact position.

[0009] In the above-mentioned impact device, optionally, the phase change assembly includes a shell and a plurality of cracking tubes. The plurality of cracking tubes are all arranged in the shell, and the shell is provided with a shell opening. The cracking openings of the cracking tubes are communicated with the containing cavity through the shell opening.

[0010] The plurality of cracking tubes are configured to sequentially complete multiple phase changes and sequentially provide multiple phase change media to the containing cavity to move the impact piece in a direction away from the containing cavity multiple times.

[0011] In the impact device, optionally, the supply assembly comprises a driving pump and a supply tank, the supply tank is used for storing the filling medium, the supply tank is communicated with the accommodating cavity through a supply pipe, and the driving pump is arranged on the supply pipe.

[0012] The driving pump is configured to deliver the filling medium in the supply tank to the accommodating cavity.

[0013] In the impact device, optionally, the first arm has an arm opening, and the impact piece is configured to move away from the accommodating cavity through the arm opening.

[0014] The impact piece comprises a connecting end, the connecting end forms the accommodating cavity together with an inner wall of the first arm, at least part of the impact piece extends to the outside of the first arm cavity through the arm opening, and an end of the impact piece away from the connecting end forms an impact end of the impact piece.

[0015] In the impact device, optionally, a connecting piece is further arranged on a side of the first arm away from the arm opening, and the phase change assembly and / or the supply assembly are arranged on the connecting piece.

[0016] In the impact device, optionally, a cross-sectional area of the impact piece close to the connecting end is smaller than a cross-sectional area of the impact piece close to the impact end.

[0017] In the impact device, optionally, along a direction from the impact end to the connecting end, the cross-sectional area of the impact piece close to the connecting end gradually decreases.

[0018] Alternatively, the impact piece close to the connecting end comprises a first extension section and a second extension section connected to each other, the first extension section is located on a side of the second extension section away from the impact end, an end face of the first extension section away from the impact end forms the connecting end, a cross-sectional area of the first extension section is smaller than a cross-sectional area of the second extension section, and the cross-sectional area of the second extension section is smaller than a cross-sectional area of the impact piece close to the impact end.

[0019] In the impact device, optionally, a second arm is further arranged, the second arm forms a second arm area, the first arm, the connecting piece, the impact piece, the supply assembly and the phase change assembly are located in the second arm area, and the connecting piece is connected to an inner wall of the second arm.

[0020] In the impact device, optionally, an end of the first arm away from the connecting piece is provided with a support piece, and the support piece is used for supporting a to-be-impacted surface of the to-be-impacted piece.

[0021] In a second aspect, the application provides an impact method applied to the impact device, and the impact method comprises the following steps:

[0022] The phase change assembly provides phase change medium to the accommodating cavity to drive the impact piece to move to an impact position of the object to be impacted;

[0023] The supply assembly provides filling medium to the accommodating cavity to drive the impact piece to remain at the impact position;

[0024] The steps of providing phase change medium by the phase change assembly and providing filling medium by the supply assembly are repeatedly executed in sequence until the impact piece moves to the target impact position of the object to be impacted.

[0025] The impact device and the impact method provided by the application, the impact device comprises a first arm, an impact piece, a supply assembly and a phase change assembly, wherein the first arm comprises a first arm cavity, and the impact piece and an inner wall surface of part of the first arm form an accommodating cavity; by arranging the impact piece in the first arm cavity, the first arm plays a guiding role in the movement process of the impact piece, thereby improving the impact accuracy of the impact piece; by connecting the supply end of the phase change assembly and the supply end of the supply assembly to the accommodating cavity, the phase change assembly can provide phase change medium to the accommodating cavity, and then the phase change medium drives the impact piece in the first arm cavity to move away from the accommodating cavity, thereby improving the impact speed of the impact piece, improving the controllability of the impact process of the impact piece, and improving the safety of the impact device; the supply assembly can provide filling medium to the accommodating cavity, and then drive the impact piece to remain at the impact position.

[0026] The impact method can repeatedly execute the steps of providing phase change medium by the phase change assembly and providing filling medium by the supply assembly, so that the phase change assembly can release phase change medium multiple times at intervals to provide power for multiple impacts of the impact piece, thereby realizing the multiple impact process of the impact piece; the supply assembly fills the filling medium into the accommodating cavity, so that in the re-impact process of the impact piece, the impact force of the phase change reaction is transmitted by the filling medium, the movement distance of the phase change medium is reduced, the energy loss is reduced, and the energy utilization rate is improved, thereby realizing the step-by-step segmented impact of the impact device and improving the work efficiency.

[0027] The structure of the application and its other practical purposes and beneficial effects will be more obvious and easy to understand through the description of the preferred embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0029] Figure 1 The structural schematic diagram of the impact device provided by the embodiment of the application;

[0030] Figure 2 Structure schematic diagram of the impact device provided by the embodiment of the present application when the second arm is installed;

[0031] Figure 3 Structure schematic diagram of the impact device provided by the embodiment of the present application after the impact piece impacts for the first time;

[0032] Figure 4 Structure schematic diagram of the supply assembly of the impact device provided by the embodiment of the present application after the supply assembly fills the filling medium for the first time;

[0033] Figure 5 Structure schematic diagram of the supply assembly of the impact device provided by the embodiment of the present application after the supply assembly fills the filling medium for the second time;

[0034] Figure 6 Step schematic diagram of the impact method provided by the embodiment of the present application.

[0035] Explanation of reference signs:

[0036] 100: supply assembly; 200: phase change assembly; 300: first arm; 400: second arm; 500: impact piece; 600: connecting piece;

[0037] 101: supply pipe; 102: driving pump; 103: filling medium;

[0038] 201: phase change medium;

[0039] 301: support piece;

[0040] 700: exhaust pipe; 800: pressure relief valve.

[0041] The specific embodiments of the present application have been shown by the above-mentioned drawings, and will be described in more detail hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application by any means, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0042] The exemplary embodiments will be described in detail herein below with reference to the drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments are not meant to represent all implementations consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0043] The inventors of the present application found in practical research that a pile driver is a pile driving machine that uses impact force to drive a pile into the ground. The pile driver includes a pile hammer, a pile frame, and auxiliary equipment. The pile hammer can be divided into drop hammers, steam hammers, diesel hammers, hydraulic hammers, etc. according to the power source of movement.

[0044] In the prior art, the pile driver usually uses a hydraulic hammer for hammering, and the core principle of the pile driver based on the hydraulic hammer is to lift the hydraulic hammer to a specified height and then release it, so that the hydraulic hammer accelerates in free fall and hits the upper end of the pile, thereby feeding the pile into the soil. The pile driver using the hydraulic hammer includes a pile hammer, a hydraulic cylinder, and a hydraulic pressure regulating valve. In the working process of the hydraulic hammer pile driver, the hydraulic source provides high-pressure oil to the piston rod cavity of the hydraulic cylinder, the piston rod is pushed to rise, and after the pile hammer is raised to the set height, the pile hammer is immediately separated from the piston rod, and the pile hammer slides downward at the rate of free fall.

[0045] However, the gravitational acceleration g of the pile hammer during free fall is fixed, so the final impact instantaneous speed of the pile hammer cannot be further improved. The existing pile driver has the problem of low impact efficiency. In addition, the pile driver using the hydraulic hammer uses hydraulic oil as power, and the entire impact work process has the problems of high energy consumption and high cost.

[0046] In view of this, the present application provides an impact device and an impact method. The impact device includes a first arm, an impact piece, a supply assembly, and a phase change assembly. The first arm includes a first arm cavity, and the impact piece and the inner wall surface of part of the first arm form a containing cavity. By setting the impact piece in the first arm cavity, the first arm guides the movement of the impact piece, improving the impact accuracy of the impact piece. The supply end of the phase change assembly and the supply end of the supply assembly are both communicated with the containing cavity. The phase change assembly can provide phase change medium to the containing cavity, and then the phase change medium pushes the impact piece in the first arm cavity to move away from the containing cavity, improving the impact speed of the impact piece, the controllability of the impact process, and the safety of the impact device. The supply assembly can provide filling medium to the containing cavity, and then push the impact piece to remain in the impact position.

[0047] The impact method can repeatedly execute the steps of providing phase change medium by the phase change assembly and providing filling medium by the supply assembly. In this way, the phase change assembly can release phase change medium multiple times at intervals to provide power for multiple impacts of the impact piece, realizing multiple impact processes of the impact piece. The supply assembly fills the filling medium into the containing cavity. In this way, in the re-impact process of the impact piece, the impact force of the phase change reaction is transmitted by the filling medium, reducing the movement distance of the phase change medium and the energy loss, and improving the energy utilization rate. In this way, the impact method realizes step-by-step impact of the impact device, improving the work efficiency.

[0048] For the purpose of making the objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more details below with reference to the drawings in the preferred embodiments of the present application. In the drawings, the same or similar notations represent the same or similar components or components with the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, rather than all the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application. The embodiments of the present application will be described in detail below with reference to the drawings.

[0049] In a first aspect, referring to Figure 1 and Figure 2 , the present application provides an impact device, comprising a first arm 300, an impact piece 500, a supply assembly 100 and a phase change assembly 200, the first arm 300 has an arm cavity, and the impact piece 500 is slidingly connected in the first arm cavity.

[0050] In the first arm cavity, the impact piece 500 and the inner wall surface of part of the first arm 300 form a containing cavity, and the supply end of the phase change assembly 200 and the supply end of the supply assembly 100 are both communicated with the containing cavity.

[0051] The phase change assembly 200 is configured to provide phase change medium 201 to the containing cavity to push the impact piece 500 to move in a direction away from the containing cavity to an impact position of a to-be-impacted piece; and the supply assembly 100 is configured to provide filling medium 103 to the containing cavity when the impact piece 500 moves to the impact position, so as to push the impact piece 500 to remain at the impact position.

[0052] For example, referring to Figure 1 and Figure 3 , when the impact device is in an impact process, the phase change assembly 200 provides phase change medium 201 to the containing cavity, and the phase change medium 201 pushes the impact piece 500 to move in a direction away from the containing cavity until the impact piece 500 moves to an impact position of a to-be-impacted piece; and when the impact piece 500 moves to the impact position of the to-be-impacted piece, the supply assembly 100 provides filling medium 103 to the containing cavity.

[0053] For example, the impact position of the to-be-impacted piece is the actual position of the impact piece 500 after each impact.

[0054] For example, by providing the first arm 300, when the phase change assembly 200 generates a huge energy in a phase change reaction, the first arm 300 can provide a structural support for the impact device, thereby improving the stability of the impact device. In addition, referring to Figure 1As shown, the extending direction of the first arm 300 is the same as the extending direction of the impact piece 500, and the extending direction of the first arm 300 and the extending direction of the impact piece 500 refer to the Y direction in the figure. By setting the first arm 300 in the same extending direction as the impact piece 500, the first arm 300 can guide the impact piece 500 connected to the first arm cavity, and improve the accuracy of the impact position of the impact piece 500. Figure 1

[0055] For example, by connecting the supply end of the phase change assembly 200 to the accommodation cavity, the phase change assembly 200 can supply the phase change medium 201 to the accommodation cavity, and then the phase change medium 201 pushes the impact piece 500 in the first arm cavity to move away from the accommodation cavity, thereby improving the impact speed of the impact piece 500 and the impact force of the impact piece 500.

[0056] For example, during the movement of the phase change assembly 200 to the impact position of the to-be-impacted piece, there is friction between the impact piece 500 and the phase change medium 201, and there is collision between the impact piece 500 and the impact position of the to-be-impacted piece, which will cause a large amount of heat in the impact piece 500 itself. By connecting the supply end of the supply assembly 100 to the accommodation cavity, after the impact process of the impact piece 500 is completed, the supply assembly 100 can deliver the filling medium 103 to the accommodation cavity. On the one hand, the filling medium 103 can reduce the heat generated by the friction between the impact piece 500 and the phase change medium 201 and the collision between the impact piece 500 and the impact position of the to-be-impacted piece. On the other hand, the filling medium 103 filled into the accommodation cavity by the supply assembly 100 can push the impact piece 500 to remain at the impact position of the to-be-impacted piece. When the impact piece 500 needs to impact again, the phase change assembly 200 releases the phase change medium 201 again. By filling the filling medium 103 in the accommodation cavity in advance, the phase change medium 201 pushes the filling medium 103 to move, and then the filling medium 103 pushes the impact piece 500 to move, thereby completing the impact process of the impact piece 500. In this way, the movement distance of the phase change medium 201 is reduced, and the energy consumption in the impact process is reduced.

[0057] As an implementable embodiment, the impact device further comprises a connecting piece 600, the connecting piece 600 is arranged on the side of the first arm 300 away from the arm opening, and the phase change assembly 200 and / or the supply assembly 100 is arranged on the connecting piece 600.

[0058] In some embodiments, the side of the first arm 300 away from the arm opening is provided with a connecting piece 600, and the phase change assembly 200 is arranged on the connecting piece 600. The connecting piece 600 can provide a bearing platform for the phase change assembly 200, thereby improving the stability of the impact device when the phase change assembly 200 undergoes a phase change reaction. The connecting piece 600 is provided with a connecting opening, and the supply end of the phase change assembly 200 is connected to the accommodation cavity through the connecting opening of the connecting piece 600.​

[0059] In some embodiments, the first arm 300 is provided with a connecting member 600 on the side away from the arm opening, and the supply assembly 100 is arranged on the connecting member 600. The connecting member 600 can provide a bearing platform for the supply assembly 100, and improve the stability of the impact device when the phase change assembly 200 reacts, and improve the safety of the supply assembly 100 mounted on the connecting member 600. The connecting member 600 is provided with a connecting opening, and the supply end of the supply assembly 100 communicates with the accommodating cavity through the connecting opening of the connecting member 600.

[0060] In some embodiments, the first arm 300 is provided with a connecting member 600 on the side away from the arm opening, and the supply assembly 100 is arranged on the connecting member 600. The connecting member 600 can provide a bearing platform for the supply assembly 100, and improve the stability of the impact device when the phase change assembly 200 reacts, and improve the safety of the supply assembly 100 mounted on the connecting member 600. The connecting member 600 is provided with a connecting opening, and the supply end of the supply assembly 100 communicates with the accommodating cavity through the connecting opening of the connecting member 600.

[0061] In some embodiments, the first arm 300 is provided with a connecting member 600 on the side away from the arm opening, and the supply assembly 100 is arranged on the connecting member 600. The connecting member 600 can provide a bearing platform for the supply assembly 100, and improve the stability of the impact device when the phase change assembly 200 reacts, and improve the safety of the supply assembly 100 mounted on the connecting member 600. The connecting member 600 is provided with a connecting opening, and the supply end of the supply assembly 100 communicates with the accommodating cavity through the connecting opening of the connecting member 600.

[0062] In some embodiments, the first arm 300 is provided with a connecting member 600 on the side away from the arm opening, and the supply assembly 100 is arranged on the connecting member 600. The connecting member 600 can provide a bearing platform for the supply assembly 100, and improve the stability of the impact device when the phase change assembly 200 reacts, and improve the safety of the supply assembly 100 mounted on the connecting member 600. The connecting member 600 is provided with a connecting opening, and the supply end of the supply assembly 100 communicates with the accommodating cavity through the connecting opening of the connecting member 600.

[0063] As an implementable embodiment, referring to FIG. 1, Figure 2 As an implementable embodiment, referring to FIG. 1,

[0064] In some embodiments, the second arm 400 is in a cylindrical structure, and the inner periphery of the cylindrical structure forms the second arm area. By connecting the connecting member 600 with the inner wall of the second arm 400, when the phase change assembly 200 generates a huge energy during the phase change reaction, the force generated by the phase change assembly 200 acts on the first arm 300 and the second arm 400 through the connecting member 600, respectively. In this way, the first arm 300 and the second arm 400 can both provide structural support for the impact device, thereby improving the stability of the impact device.

[0065] When the phase change assembly 200 generates the phase change reaction, and the phase change medium 201 pushes the impact piece 500 to move, both the phase change reaction and the phase change medium 201 pushing the impact piece 500 to move will generate noise. By setting the second arm 400 as a cylindrical structure, the first arm 300, the connecting piece 600, the impact piece 500, the supply assembly 100 and the phase change assembly 200 are all arranged in the cylindrical structure. In this way, the cylindrical structure can surround the impact piece 500 and the phase change assembly 200. The cylindrical structure can absorb the noise generated by the phase change reaction and the phase change medium 201 pushing the impact piece 500 to move, thereby reducing the noise of the impact device.

[0066] In other embodiments, the second arm 400 is in a columnar shape, and two second arms 400 are oppositely arranged and collectively surround to form a second arm area. By connecting the connecting piece 600 with the inner walls of the two second arms 400 respectively, when the phase change assembly 200 generates a huge energy due to the phase change reaction, the force generated by the phase change assembly 200 acts on the first arm 300 and the second arm 400 through the connecting piece 600 respectively. In this way, the first arm 300 and the second arm 400 can both provide structural support for the impact device, thereby improving the stability of the impact device.

[0067] As an implementable embodiment, the phase change assembly 200 includes a shell and a plurality of cracking tubes. The plurality of cracking tubes are all arranged in the shell. The shell is provided with a shell opening. The cracking openings of the cracking tubes are in communication with the accommodation cavity through the shell opening.

[0068] The plurality of cracking tubes are configured to sequentially complete multiple phase changes and sequentially provide the accommodation cavity with multiple phase change media 201, so that the impact piece 500 moves multiple times in a direction away from the accommodation cavity.

[0069] For example, the phase change assembly 200 includes a shell and a plurality of cracking tubes. By arranging multiple cracking tubes, the phase change assembly 200 can release the phase change medium multiple times at intervals, provide power to the impact piece, and then the impact piece can realize multiple effective impact processes. The amount of phase change medium released by the phase change assembly 200 each time is controllable, and thus the power provided to the impact piece is controllable. In this way, the impact device has the advantage of high safety.

[0070] For example, with reference to Figures 3 to 5As shown, when the phase change assembly 200 reacts, one of the plurality of cracking tubes releases the phase change medium 201 into the accommodating cavity, the phase change medium 201 pushes the impact piece 500 to move in a direction away from the accommodating cavity until the impact piece 500 moves to the impact position of the impact piece; when the impact piece 500 moves to the impact position of the impact piece, the supply assembly 100 provides the filling medium 103 into the accommodating cavity. If the impact piece 500 does not move to the target impact position of the impact piece, another of the plurality of cracking tubes releases the phase change medium 201 into the accommodating cavity through the connecting opening, the phase change medium 201 pushes the filling medium 103 to move in a direction away from the accommodating cavity, and then the phase change medium 201 transmits the impact force to the impact piece 500 through the filling medium 103, and the impact piece 500 moves in a direction away from the accommodating cavity again. If the impact piece 500 still does not move to the target impact position, the above process can be repeated. In this way, the plurality of cracking tubes of the phase change assembly 200 release the phase change medium 201 in turn, and the plurality of cracking tubes not only provide the impact power source for the impact device, but also enable the phase change assembly 200 to release the impact force multiple times; after the phase change assembly 200 releases the phase change medium 201, the supply assembly 100 releases the filling medium 103 into the accommodating cavity. In this way, the plurality of cracking tubes are triggered in turn, and the step-by-step segmented impact process of the impact device is realized, and the multiple impact processes of the impact device are realized; in the re-impact process of the impact piece, the filling medium is used to transmit the impact force of the phase change reaction, the moving distance of the phase change medium is reduced, the energy loss is reduced, and the energy utilization rate is improved.

[0071] For example, the impact position of the impact piece is the actual position of the impact piece 500 after each impact. The target impact position of the impact piece is the depth position set by the operator that the impact piece 500 should reach after the last impact.

[0072] For example, the cracking tube is controlled by the detonation device to release the phase change medium 201 into the accommodating cavity in turn.

[0073] In some embodiments, the phase change assembly 200 includes a carbon dioxide cracking device, the storage medium in the cracking tube can be liquid carbon dioxide, and the phase change medium 201 released by the cracking tube can be gaseous carbon dioxide. The carbon dioxide cracking device is a device that uses the physical principle of rapid pressure rise of liquid carbon dioxide endothermic gasification and expansion.

[0074] As an implementable embodiment, the first arm 300 has an arm opening, and the impact piece 500 is configured to move in a direction away from the accommodating cavity via the arm opening.

[0075] The impact piece 500 comprises a connecting end which forms a receiving cavity with the inner wall of the partial first arm 300; at least part of the impact piece 500 extends to the outside of the first arm cavity via the arm opening, and the end of the impact piece 500 away from the connecting end forms the impact end of the impact piece 500.

[0076] For example, referring to Figure 1 As shown in the figure, in order to ensure the impact process of the impact piece 500, the first arm 300 has an arm opening, and the impact piece 500 is moved by the arm opening in the direction away from the receiving cavity under the push of the phase change medium 201, and impacts the impact surface of the to-be-impacted piece and moves the impact position of the to-be-impacted piece. The moving direction of the impact piece 500 is shown in the direction of Y in the figure. Figure 1

[0077] As an implementable embodiment, the end of the first arm 300 away from the connecting piece 600 is provided with a support piece 301 which is used to support the impact surface of the to-be-impacted piece.

[0078] For example, referring to Figure 1 As shown in the figure, the support piece 301 extends along the direction of X shown in the figure, and the first arm 300 extends along the direction of Y shown in the figure. By providing the support piece 301, the contact area between the first arm 300 and the impact surface of the to-be-impacted piece is increased, the support stability of the first arm 300 is improved, and the stability of the impact device in the impact process is improved. Figure 1 Figure 1 As an implementable embodiment, the cross-sectional area of the impact piece 500 close to the connecting end is smaller than the cross-sectional area of the impact piece 500 close to the impact end.

[0079] For example, during the impact process of the impact piece 500, the phase change medium 201 released by the phase change assembly 200 directly acts on the impact piece 500 close to the connecting piece 600, and at this time, when the cross-sectional area of the impact piece 500 close to the connecting end is smaller than the cross-sectional area of the impact piece 500 close to the impact end, the pressure of the connecting end of the impact piece 500 can be changed, the resistance of the impact piece 500 moving away from the receiving cavity is reduced, the moving speed of the impact piece 500 is improved, the compression waves excited by the impact piece 500 and the inner wall of the first arm 300 respectively are reduced, and the noise generated thereby is reduced.

[0080] As an implementable embodiment, along the direction from the impact end to the connecting end, the cross-sectional area of the impact piece 500 close to the connecting end gradually decreases.

[0081] As an implementable embodiment, along the direction from the impact end to the connecting end, the cross-sectional area of the impact piece 500 close to the connecting end gradually decreases.

[0082] As an implementable embodiment, along the direction from the impact end to the connecting end, the cross-sectional area of the impact piece 500 close to the connecting end gradually decreases.

[0083] ​​As an implementable embodiment, the impact piece 500 close to the connecting end comprises a first extension section and a second extension section connected with each other, the first extension section is located on the side of the second extension section away from the impact end; the end face of the first extension section away from the impact end forms the connecting end; the cross-sectional area of the first extension section is smaller than that of the second extension section, and the cross-sectional area of the second extension section is smaller than that of the impact piece 500 close to the impact end.

[0084] In some embodiments, the cross-sectional area of the impact piece 500 close to the connecting end gradually decreases in the direction from the impact end to the connecting end, and the end of the impact piece 500 close to the connecting end is in a near bullet head shape, so that the pressure of the connecting end of the impact piece 500 is reduced, the compression wave excited by the connecting end of the impact piece 500 in the accommodating cavity is relatively weakened, the resistance of the impact piece 500 moving away from the accommodating cavity is reduced, and the noise of the impact piece 500 moving away from the accommodating cavity is reduced.

[0085] In some embodiments, the cross-sectional area of the impact piece 500 close to the connecting end gradually decreases in the direction from the impact end to the connecting end, and the end of the impact piece 500 close to the connecting end is in a near bullet head shape, so that the pressure of the connecting end of the impact piece 500 is reduced, the compression wave excited by the connecting end of the impact piece 500 in the accommodating cavity is relatively weakened, the resistance of the impact piece 500 moving away from the accommodating cavity is reduced, and the noise of the impact piece 500 moving away from the accommodating cavity is reduced.

[0086] For example, the impact piece 500 can be an impact column.

[0087] As an implementable embodiment, the supply assembly 100 comprises a driving pump 102 and a supply tank, the supply tank is used to store the filling medium 103, the supply tank is communicated with the accommodating cavity through the supply pipe 101, and the driving pump 102 is arranged on the supply pipe 101.

[0088] The driving pump 102 is configured to deliver the filling medium 103 in the supply tank to the accommodating cavity.

[0089] For example, during the impact process of the impact device, when the impact piece 500 moves to the impact position of the to-be-impacted piece, the supply assembly 100 provides the filling medium 103 to the accommodating cavity. At this time, the driving pump 102 is started, and the liquid inlet end of the driving pump 102 delivers the filling medium 103 in the supply tank to the accommodating cavity through the supply pipe 101.

[0090] For example, the filling medium 103 stored in the supply tank comprises water and oil.

[0091] In some embodiments, the supply tank stores water, and the driving pump 102 can deliver the water in the supply tank to the accommodating cavity through the supply pipe 101. After the carbon dioxide fracturing device releases gaseous carbon dioxide into the accommodating cavity, the driving pump 102 is started to deliver water from the supply tank to the accommodating cavity. On the one hand, the water can reduce the heat generated by the friction between the impact piece 500 and the gaseous carbon dioxide and the collision between the impact piece 500 and the impact position of the to-be-impacted piece. On the other hand, the water filled in the accommodating cavity can push the impact piece 500 to remain at the impact position. When the impact piece 500 needs to impact again, the carbon dioxide fracturing device releases gaseous carbon dioxide again. By filling water in the accommodating cavity in advance, the gaseous carbon dioxide pushes the water to move, and then the water pushes the impact piece 500 to move, thereby completing the impact process of the impact piece 500. In this way, the moving distance of the gaseous carbon dioxide is reduced, and the energy consumption in the impact process is reduced.

[0092] For example, after the impact piece 500 moves each time, the driving pump 102 fills the filling medium 103 into the accommodating cavity through the supply pipe 101. When the impact piece 500 moves to the impact position of the to-be-impacted piece, the impact piece 500 can not have reached a stable state, and at this time, the filling medium 103 can be filled into the accommodating cavity to make the impact piece 500 reach the stable state. That is, after the phase change assembly 200 completes a phase change reaction, the driving pump 102 can deliver the filling medium 103 in the supply tank to the accommodating cavity through the supply pipe 101, and the action basis of the driving pump 102 does not depend on whether the impact piece 500 moves.

[0093] For example, the impact device further includes an exhaust pipe 700 and a pressure relief valve 800, the exhaust pipe 700 is in communication with the accommodating cavity, and the pressure relief valve 800 is arranged on the exhaust pipe 700 and can be automatically opened and closed according to a preset pressure. After the impact process of the impact device ends, the phase change medium 201 in the accommodating cavity is still in a saturated state. When the phase change medium 201 in the phase change device is gaseous carbon dioxide, the content of carbon dioxide in the accommodating cavity is sufficient, and the atmospheric pressure in the accommodating cavity is higher than that of the outside. In order to quickly discharge the carbon dioxide gas, the filling medium 103 provided by the supply assembly 100 is introduced, at this time, the pressure relief valve 800 can be opened, the excess carbon dioxide is discharged from the accommodating cavity, and the filling medium 103 provided by the supply assembly 100 enters the accommodating cavity.

[0094] In a second aspect, referring to Figure 6 The present application provides an impact method applied to the impact device, and the impact method includes the following steps:

[0095] S100: controlling the phase change assembly to provide the phase change medium to the accommodating cavity to push the impact piece to move to the impact position of the to-be-impacted piece in a direction away from the accommodating cavity;

[0096] S200: The supply assembly provides the filling medium to the containing cavity to push the impact piece to stay at the impact position.

[0097] S300: The steps of providing the phase change medium by the phase change assembly and providing the filling medium by the supply assembly are repeated in sequence until the impact piece moves to the target impact position of the impact object.

[0098] In the impact process of the impact device, first, the phase change assembly 200 generates a phase change reaction, liquid carbon dioxide is converted into gaseous carbon dioxide, the gaseous carbon dioxide rapidly fills the containing cavity, and pushes the impact column to move away from the containing cavity, and the impact end of the impact column is at the impact position of the impact object; then the supply assembly 100 fills water into the containing cavity, and the water enters the containing cavity; then the phase change assembly 200 generates a phase change reaction again, liquid carbon dioxide is converted into gaseous carbon dioxide, the gaseous carbon dioxide impacts the water in the containing cavity, and then the water impacts the impact column, and the impact end of the impact column continues to impact. In the impact process of the impact device, the steps of providing gaseous carbon dioxide by the phase change assembly 200 and providing water by the supply assembly 100 are repeated in sequence until the impact column moves to the target impact position of the impact object. The phase change assembly 200 releases gaseous carbon dioxide at intervals for multiple times to provide power for multiple impacts of the impact column, and the multiple impact process of the impact column is realized; the supply assembly 100 fills water into the containing cavity, and the filled water is used to transmit impact force in the re-impact process of the impact column, the moving distance of the gaseous carbon dioxide is reduced, and the energy utilization rate of the impact device is improved. The impact method realizes step-by-step segmented working of the impact device, and improves the working efficiency of the impact device.

[0099] It can be understood that, since the impact method of the present application adopts the technical solutions of the above-mentioned impact device embodiments, it at least has the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0100] In the above description, it should be understood that, unless otherwise explicitly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be fixedly connected, indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned term in the present application can be understood according to the specific circumstances. The orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only intended to facilitate the description of the present application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specified and limited.

[0101] The terms "first", "second", "third", "fourth" and the like in the description and in the claims of the present application, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the use of these terms herein is to be construed to cover a generalised use of these terms to refer to similar elements independently of any specific order or sequence. Also, the terms "comprises", "comprising", "includes", "including" and the like, are inclusive only - they do not exclude the presence of other elements or steps. Furthermore, the terms "coupled" and "coupling" should not be construed as being restricted to a direct coupling between elements or steps, rather it should be understood that these terms are intended to cover an indirect coupling between elements or steps through the use of one or more additional elements or steps as appropriate.

[0102] Finally, it should be noted that the above-mentioned embodiments illustrate rather than limit the application, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. The word "comprising" does not exclude the presence of elements or steps other than those listed in a claim. In addition, the articles "a", "an" and "the" as used in this application should generally be construed to mean "one or more" unless specified otherwise by the context.

Claims

1. An impact device, characterized in that: The invention comprises a first guard arm, an impact piece, a supply assembly and a phase change assembly, wherein the first guard arm has a first guard arm cavity, and the impact piece is slidably connected to the first guard arm cavity; In the first guard arm cavity, the impact member and a portion of the inner wall surface of the first guard arm form a receiving cavity, and the supply end of the phase change component and the supply end of the supply component are both connected to the receiving cavity; The phase change assembly is configured to provide a phase change medium to the accommodating cavity to push the impact member to move in a direction away from the accommodating cavity to an impact position of the member to be impacted; the supply assembly is configured to provide a filling medium to the accommodating cavity when the impact member moves to the impact position to push the impact member to remain in the impact position; The phase change assembly includes a shell and a fracturing tube. There are multiple fracturing tubes, each of which is disposed in the shell. The shell is provided with a shell opening, and the fracturing openings of the fracturing tubes are communicated with the accommodating cavity through the shell opening. The plurality of fracturing tubes are configured to sequentially complete multiple phase changes and sequentially provide multiple phase change media to the accommodating cavity, so as to cause the impact member to move multiple times in a direction away from the accommodating cavity; The supply assembly includes a driving pump and a supply tank, wherein the supply tank is used to store the filling medium, the supply tank is connected to the accommodating chamber through a supply pipe, and the driving pump is arranged on the supply pipe; The driving pump is configured to deliver the filling medium of the supply tank to the accommodating chamber.

2. The impact device according to claim 1, characterized in that The first guard arm has a guard arm opening, and the impact member is configured to move in a direction away from the accommodating cavity through the guard arm opening; The impact piece includes a connecting end, and the connecting end and a portion of the inner wall of the first guard arm form the accommodating cavity; at least a portion of the impact piece extends to the outside of the first guard arm cavity through the guard arm opening, and the end of the impact piece away from the connecting end forms the impact end of the impact piece.

3. The impact device according to claim 2, characterized in that It also includes a connecting piece, which is arranged on a side of the first guard arm away from the guard arm opening, and the phase change component and / or the supply component are arranged on the connecting piece.

4. The impact device according to claim 3, characterized in that The cross-sectional area of ​​the impact member on the side close to the connecting end is smaller than the cross-sectional area of ​​the impact member on the side close to the impact end.

5. The impact device according to claim 3, characterized in that Along the direction from the impact end to the connection end, the cross-sectional area of ​​the impact member close to the connection end gradually decreases; Alternatively, the impact member near the connecting end includes a first extension section and a second extension section connected to each other, the first extension section is located on a side of the second extension section away from the impact end; an end surface of the first extension section away from the impact end forms the connecting end; The cross-sectional area of ​​the first extension section is smaller than the cross-sectional area of ​​the second extension section, and the cross-sectional area of ​​the second extension section is smaller than the cross-sectional area of ​​the impact member near the impact end.

6. The impact device according to any one of claims 3 to 5, characterized in that: It also includes a second guard arm, which forms a second guard arm area. The first guard arm, the connecting piece, the impact piece, the supply assembly and the phase change assembly are all located in the second guard arm area. The connecting piece is connected to the inner wall of the second guard arm.

7. The impact device according to any one of claims 3 to 5, characterized in that: A support member is provided at one end of the first guard arm away from the connecting member, and the support member is used to support the surface to be impacted of the member to be impacted.

8. An impact method, characterized in that: The impact device according to any one of claims 1 to 7, wherein the impact method comprises the following steps: Controlling the phase change component to provide phase change medium to the accommodating cavity to push the impact piece to move in a direction away from the accommodating cavity to an impact position of the piece to be impacted; Controlling the supply assembly to provide a filling medium to the accommodating chamber to push the impact member to remain at the impact position; The steps of the phase change component providing the phase change medium and the supply component providing the filling medium are repeated in sequence until the impact piece moves to a target impact position of the piece to be impacted.

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