Novel high-efficient carbon dioxide phase transition send and splits ware
阅读说明:本技术 一种新型高效二氧化碳相变致裂器 (Novel high-efficient carbon dioxide phase transition send and splits ware ) 是由 邓峰 刘璇 余红安 宋春江 杨幼江 朱禧 高博 罗学东 蒋楠 于 2019-11-19 设计创作,主要内容包括:本发明公开一种新型高效二氧化碳相变致裂器,包括压盖、发热管、储液管和泄能头,储液管两端分别与压盖、泄能头连接,压盖上设有贯穿其上下端面的导线通孔,发热管固定在压盖下端面上,压盖上还设有注液口,泄能头包括端头主体和剪切片,端头主体为底端封闭的空心柱状,端头主体的侧壁沿端头主体的底面向上延伸设有环形槽且其上对称设有两泄能口,剪切片为底部具有圆盘的环形柱状,剪切片插入设置在环形槽内。其优点在于,将泄能头内的剪切片设计为平行于钻孔壁,在二氧化碳致裂器起爆过程中,可以避免泄能头与钻孔底部发生冲击而引起能量损失,从而提高相变过程中的能量利用率,而且能有效避免二氧化碳相变致裂时发生“飞管”现象。(The invention discloses a novel high-efficiency carbon dioxide phase change cracking device which comprises a gland, a heating pipe, a liquid storage pipe and an energy release head, wherein two ends of the liquid storage pipe are respectively connected with the gland and the energy release head, the gland is provided with a lead through hole penetrating through the upper end surface and the lower end surface of the gland, the heating pipe is fixed on the lower end surface of the gland, the gland is also provided with an injection port, the energy release head comprises an end head main body and a shearing sheet, the end head main body is in a hollow column shape with a closed bottom end, the side wall of the end head main body is upwards extended along the bottom surface of the end head main body and is provided with an annular groove, two energy release ports are symmetrically arranged on the side wall. The carbon dioxide fracturing device has the advantages that the shearing sheet in the energy release head is designed to be parallel to the wall of the drill hole, and in the detonation process of the carbon dioxide fracturing device, the energy loss caused by impact between the energy release head and the bottom of the drill hole can be avoided, so that the energy utilization rate in the phase change process is improved, and the phenomenon of 'pipe flying' caused by carbon dioxide phase change fracturing can be effectively avoided.)
1. The utility model provides a novel high-efficient carbon dioxide phase transition send and splits ware, includes gland, heating tube, liquid storage pipe and can the head let out, the liquid storage pipe both ends respectively with the gland, let out can the head be connected, make the liquid storage pipe inner chamber be enclosed state, its characterized in that: be equipped with the wire through-hole that runs through its terminal surface from top to bottom on the gland, the heating tube is fixed under the gland on the terminal surface, still be equipped with on the gland and annotate the liquid mouth, annotate the liquid mouth and seal and communicate through annotating liquid passageway and liquid storage pipe inner chamber through the shutoff, the head of letting out can include end main part and shearing piece, and the end main part is bottom confined hollow column, and the lateral wall of end main part upwards extends along the bottom surface of end main part and is equipped with the ring channel and its upper symmetry is equipped with two and lets out can the mouth, and the shearing piece has the annular column of disc for the bottom, cuts the thickness of sliced thickness and the groove width phase-match of ring channel, and the shearing piece inserts and sets up in the.
2. The novel efficient carbon dioxide phase transition cracking device according to claim 1, wherein: the outer wall of the liquid storage pipe is annularly sleeved with a hole sealing device, the hole sealing device is composed of two hole sealing pieces, the two hole sealing pieces can be spliced into a circular ring, and the two hole sealing pieces are locked by adopting a bolt structure.
3. The novel efficient carbon dioxide phase transition cracking device according to claim 2, wherein: the inner side of the hole sealing sheet is provided with an outer convex clamping groove, and the outer wall of the liquid storage pipe is provided with an inner concave clamping groove matched with the outer convex clamping groove.
4. The novel efficient carbon dioxide phase transition cracking device according to claim 1, wherein: and a heat-insulating coating is coated on the inner cavity wall of the liquid storage tube.
5. The novel efficient carbon dioxide phase transition cracking device according to claim 1, wherein: the turbine device is arranged in the inner cavity of the liquid storage pipe and comprises a turbine connecting rod and a turbine, the turbine connecting rod is of an inverted L shape, the transverse part of the turbine connecting rod is fixed on the wall of the inner cavity wall of the liquid storage pipe, the longitudinal part of the turbine connecting rod is overlapped with the central axis of the inner cavity of the liquid storage pipe, and the turbine is arranged at the front end of the turbine connecting rod.
6. The novel efficient carbon dioxide phase transition cracking device according to claim 5, wherein: the wires of the turbine are arranged upwards along the cavity wall of the inner cavity of the liquid storage tube, and the wires of the turbine and the heating tube are connected in series through an external wire after penetrating out of the wire through hole.
7. The novel high-efficiency carbon dioxide phase transition cracking device according to any one of claims 1 to 6, characterized in that: and a sealing ring is arranged at the fixedly connected part of the heating tube and the gland.
8. The novel high-efficiency carbon dioxide phase transition cracking device according to any one of claims 1 to 6, characterized in that: and a sealing gasket is arranged at the bottom of the annular groove.
Technical Field
The invention relates to the technical field of exploration rock-soil buildings, in particular to a novel efficient carbon dioxide phase change fracturing device.
Background
In 1914, after the Cardox company invented the Cardox tube system, the Cardox tube system was used for coal seam fracturing, permeability increasing and mining, the fracturing effect was good, the safety was high, the technology was applied to the aspects of pipeline blockage removal, ice breaking and the like in developed countries such as the British Law and the like since the last 80 th century. The main energy source for applying work to the rock medium to be crushed by the carbon dioxide phase-change fracturing rock-breaking technology is the phase energy difference between the supercritical state and the gaseous state of liquid carbon dioxide, and compared with the common explosive blasting, the carbon dioxide phase-change fracturing rock-breaking technology has the advantages of small seismic waves, less flying stones, short throwing distance, small dust emission, easiness in control, good safety, stable peak pressure, long duration and the like. At present, the technology is widely applied to the aspects of rock breaking, jade mining, underwater blasting, coal seam permeability increasing and the like, and has a wide industrial application prospect, but the carbon dioxide phase change cracking technology is still in a primary development stage at present due to short development time, and the theory is still behind the reality. The development of the efficient rock breaking equipment is a key link for promoting the rapid development of the carbon dioxide phase change technology, and has important significance for improving the application level of the supercritical carbon dioxide fracturing technology.
At present, most of shearing pieces of the carbon dioxide phase change cracking device are arranged to be parallel to the energy release head bottom, after the high-energy carbon dioxide breaks the shearing pieces, the shearing pieces firstly impact the energy release head bottom and then are sprayed out from energy release ports on two sides, and high-energy gas impacts rock walls to enable rocks to be rapidly damaged. The arrangement mode of the shearing sheet of the fracturing device has the advantages that the energy discharge head is impacted too much, is easy to damage, has huge energy loss, and is easy to damage due to huge impact counter force, so that the energy discharge head is easy to break, the fracturing device is caused to generate 'flying pipes', and great potential safety hazards are caused.
Disclosure of Invention
The invention aims to provide a novel high-efficiency carbon dioxide phase change cracking device aiming at the existing technical situation, wherein a shearing sheet in an energy release head is designed to be parallel to the wall of a drill hole, and in the detonation process of the carbon dioxide cracking device, the energy loss caused by the impact between the energy release head and the bottom of the drill hole can be avoided, so that the energy utilization rate in the phase change process is improved, and the phenomenon of 'pipe flying' in the phase change cracking process of carbon dioxide can be effectively avoided.
In order to achieve the purpose, the invention adopts the following technical scheme:
a novel high-efficiency carbon dioxide phase change cracking device comprises a gland, a heating tube, a liquid storage tube and an energy release head, wherein two ends of the liquid storage tube are respectively connected with the gland and the energy release head to ensure that the inner cavity of the liquid storage tube is in a closed state, the gland is provided with a lead through hole penetrating through the upper end surface and the lower end surface of the gland, the heating tube is fixed on the lower end surface of the gland, the gland is also provided with a liquid injection port which is sealed by a sealing plug and communicated with the inner cavity of the liquid storage pipe through a liquid injection channel, the energy discharge head comprises an end body and a shearing sheet, the end body is in a hollow column shape with the bottom end closed, the side wall of the end body extends upwards along the bottom surface of the end body to form an annular groove, two energy discharge ports are symmetrically formed in the side wall of the end body, the shearing sheet is in an annular column shape with a disc at the bottom, the thickness of the shearing sheet is matched with the groove width of the annular groove, the shearing sheet is inserted into the annular groove, and the two energy discharge ports in the side wall of the end body are closed.
Furthermore, the outer wall of the liquid storage pipe is annularly sleeved with a hole sealing device, the hole sealing device is composed of two hole sealing sheets, the two hole sealing sheets can be spliced into a circular ring, and the circular ring and the hole sealing sheets are locked by a bolt structure.
Furthermore, the inner side of the hole sealing sheet is provided with an outer convex clamping groove, and the outer wall of the liquid storage pipe is provided with an inner concave clamping groove matched with the outer convex clamping groove.
Further, a heat-insulating coating is coated on the inner cavity wall of the liquid storage tube.
Further, a turbine device is arranged in the inner cavity of the liquid storage pipe and comprises a turbine connecting rod and a turbine, the turbine connecting rod is of an inverted L shape, the transverse portion of the turbine connecting rod is fixed to the wall of the inner cavity of the liquid storage pipe, the longitudinal portion of the turbine connecting rod is overlapped with the central axis of the inner cavity of the liquid storage pipe, and the turbine is arranged at the front end of the turbine connecting rod.
Furthermore, the wires of the turbine are arranged upwards along the cavity wall of the inner cavity of the liquid storage tube, and the wires of the turbine and the heating tube are connected in series through an external wire after penetrating out of the wire through hole.
Furthermore, a sealing ring is arranged at the fixedly connected part of the heating tube and the gland.
Further, a sealing gasket is arranged at the bottom of the annular groove.
The invention has the beneficial effects that:
1. compared with the prior art, the technical scheme of the invention designs the shearing sheet in the energy discharge head to be parallel to the wall of the drill hole, and can avoid energy loss caused by impact between the energy discharge head and the bottom of the drill hole in the detonation process of the carbon dioxide fracturing device, thereby improving the energy utilization rate in the phase change process and effectively avoiding the phenomenon of 'pipe flying' when the carbon dioxide is subjected to phase change fracturing;
2. the hole sealing device is arranged on the outer wall of the liquid storage pipe, so that the hole sealing performance is ensured in the detonation process, and the action time of high-pressure gas is effectively prolonged;
3. a turbine device is arranged in the inner cavity of the liquid storage pipe, a lead of the turbine is connected with a lead of the heating pipe in series, when the detonation current is switched on, the heating pipe and the turbine are started simultaneously, the carbon dioxide is uniformly heated, and the detonation is rapid and thorough;
4. the cavity wall of the inner cavity of the liquid storage pipe is coated with the heat-insulating coating, so that the heat-insulating capacity of the liquid storage pipe is improved, and the phenomenon that the detonation time is too long due to too large temperature difference is prevented.
Drawings
FIG. 1 is a schematic structural diagram of a carbon dioxide phase change cracking device according to the present invention;
fig. 2 is a schematic structural diagram of the energy discharge head of the present invention.
Description of the labeling: 1. the device comprises a lead through hole, 2, a liquid injection channel, 3, a gland, 4, a liquid injection port, 5, a heating pipe, 6, a heat preservation coating, 7, a hole sealing sheet, 8, a turbine connecting rod, 9, a sealing washer, 10, an end head main body, 11, a turbine, 12, a shearing sheet, 13 and a liquid storage pipe.
Detailed Description
Referring to fig. 1-2, a novel efficient carbon dioxide phase transition cracking device includes a
The
The energy discharge head comprises an
According to the technical scheme, the
The outer wall of the
For different diameter drilling, can change the hole sealing
The conventional carbon dioxide phase change cracking device is cast by 42CrMo subjected to quenching and tempering, heat energy required for exciting the phase change of the carbon dioxide before detonation can be dissipated through the pipe wall of the
The turbine device is arranged in the inner cavity of the
Preferably, the lead of the
Specifically, before the carbon dioxide phase change cracking device is used, liquid carbon dioxide is injected into an inner cavity of the
It should be understood that the above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the invention, therefore, all equivalent changes in the principle of the present invention should be included in the protection scope of the present invention.
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