CN113217684B - For CO 2 Novel rupture disk of fracturing device - Google Patents
For CO 2 Novel rupture disk of fracturing device Download PDFInfo
- Publication number
- CN113217684B CN113217684B CN202110458812.0A CN202110458812A CN113217684B CN 113217684 B CN113217684 B CN 113217684B CN 202110458812 A CN202110458812 A CN 202110458812A CN 113217684 B CN113217684 B CN 113217684B
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- Prior art keywords
- rupture disk
- tensile
- energizing
- fracturing device
- limiting
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- 239000000463 material Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 238000010008 shearing Methods 0.000 abstract description 4
- 239000003245 coal Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000011435 rock Substances 0.000 description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/40—Safety valves; Equalising valves, e.g. pressure relief valves with a fracturing member, e.g. fracturing diaphragm, glass, fusible joint
- F16K17/403—Safety valves; Equalising valves, e.g. pressure relief valves with a fracturing member, e.g. fracturing diaphragm, glass, fusible joint with a fracturing valve member
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention provides a novel rupture disk for a CO2 fracturer, which belongs to the technical field of safe pressure release and comprises a rupture disk body, wherein the rupture disk body consists of an upper annular limiting position, a middle cylindrical tensile position and a lower cylindrical energizing position; the rupture disk solves the problems that the conventional rupture disk is difficult to calculate the burst pressure and has larger error value, changes the damage situation from shearing damage to tension damage, and has the advantages of simple structure, accurate design pressure and the like.
Description
Technical Field
The invention relates to the technical field of blasting devices, in particular to a novel rupture disk for a CO2 fracturing device.
Background
The CO2 fracturing technology is a safe coal mining technology for high gas coal mines in 30-50 years of the 20 th century, is widely applied to the United states, the United kingdom and Canada, is developed into a globally widely applied CARDOX system, and is widely applied to the fields of industrial blockage removal, rock excavation, urban infrastructure projects and the like of cement plants, power plants, chemical plants and the like. The working principle is that after liquid CO2 in the liquid storage pipe absorbs heat rapidly, the liquid CO2 expands in a phase change manner to reach the shearing pressure of a rupture disk, and high-pressure jet flow is formed to crack the coal rock mass, so that the coal rock mass generates a complex fracture network. The complexity of the fracture network is closely related to the liquid CO2 filling amount and the burst disc strength of a single CO2 fracturing device. The larger the filling amount of the liquid CO2 and the strength of the rupture disk are, the more complex the cracks of the coal rock mass are, and the higher the rock excavation efficiency is.
At present, in order to improve the mining efficiency of hard coal rock mass, a CO2 fracturing device with large liquid amount, high pressure and large diameter is adopted, the outer diameter of the CO2 fracturing device reaches 108mm, the diameter of a rupture disk is 80mm, and the thickness of the rupture disk is more than 15 mm. However, the burst pressure of the circular plate type burst disc CO2 fracturer of the shear failure mechanism is closely related to the thickness of the burst disc and the shear strength of materials, the contradiction between large shear area and low burst pressure exists, if the pressure of the burst disc needs to be increased, the thickness of the burst disc needs to be increased, so that the problem of pressure relief tightness in advance or after delay exists in the use process of the CO2 fracturer due to the fact that the burst disc is too thick, and huge potential safety hazards are brought to engineering construction.
Disclosure of Invention
The novel rupture disc for the CO2 fracturer is convenient to use and improves safety.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a novel rupture disk for CO2 fracturing device, includes the rupture disk body, the rupture disk body comprises the cylindric position of energizing of restriction position, the cylindric tensile position in middle part and the cylindric position of lower part of upper portion ring form, the burst pressure of rupture disk body is decided by the tensile position, and the burst pressure computational formula is: p-4 σ t *(T 2 +DT)/D 2 ；
Wherein: sigma t The tensile strength of the material of the tensile part;
d is the inner diameter of the cylinder;
t is the thickness of the cylinder.
Furthermore, an energy increasing component is arranged at the upper end of the energy increasing part.
Further, the energizing member is provided in a hemispherical shape or a conical shape.
Furthermore, the upper surface and the lower surface of the limiting position are provided with sealing rings.
Furthermore, the joint of the limiting position and the tensile position is a right angle or an arc-shaped lead angle.
Furthermore, the joint of the tensile part and the energizing part is a right angle or an arc-shaped lead angle.
Furthermore, the inner diameter of the ring of the limiting position is 10-80 mm, the outer diameter is 20-90 mm, the inner diameter D of the tensile position is 10-80 mm, the thickness T is 0.1-10 mm, the inner diameter of the limiting position is 10-80 mm, the outer diameter is 20-90 mm, and the height of the energizing position is 10-100 mm.
Furthermore, the limiting part, the tensile part and the energizing part are integrally formed.
Furthermore, the limiting part, the tensile part and the energizing part are connected with each other through threads.
The working principle of the scheme is as follows:
(1) the sealing and pressure control functions of the traditional rupture disk of a shearing machine are designed in a sub-position mode, namely, the novel rupture disk is designed to be composed of an annular limiting position with the upper part having a sealing function, a cylindrical tensile position with the middle part having a pressure control function and an energizing position with the lower part increasing the blasting energy.
(2) Incorporating material tensile mechanisms into rupture disk designs using P-4 σ t *(T 2 +DT)/D 2 The pressure of the rupture disk is controlled.
By adopting the scheme, the invention has the following beneficial effects:
(1) the failure strength calculation model of the novel rupture disk is simple and accurate, the rupture disk failure pressure depends on the tensile strength of the tensile position material and the wall thickness of the cylinder, and the controllable range of the rupture pressure of the novel rupture disk is as follows: 5-500 MPa, and the thickness T of the cylinder at the tensile part is 0.1-10 mm;
(2) the sealing function and the pressure control function of the novel rupture disk are independently controlled by different parts of the rupture disk, so that the engineering problem that the sealing property cannot be ensured when the conventional circular rupture disk is large in thickness is solved;
(3) the novel rupture disk can be provided with various sealing measures at the position of the limit part, so that the overall sealing performance of the CO2 fracturer can be greatly improved;
(4) after the novel rupture disk is broken, the cylinder at the energizing part falls into the counter bore, the bottom surface of the cone is flush with the top surface of the counter bore, and high-pressure jet forms a simple Laval nozzle effect through the energizing part of the cone, so that the impact speed is improved, and the energy loss is reduced;
(5) the height of the cylinder at the energizing part of the novel rupture disk can be set to be 10-100 mm, and the novel rupture disk is not restricted by the burst pressure of a CO2 fracturer, so that the problem that the traditional shearing type rupture disk is inconvenient for designing a circuit is solved.
Drawings
FIG. 1 is a sectional view showing the whole structure of example 1 of the present invention;
FIG. 2 is a top view of the invention;
FIG. 3 is a sectional view showing the whole structure of embodiment 2 of the present invention;
FIG. 4 is a sectional view showing the whole structure of embodiment 3 of the present invention;
FIG. 5 is a sectional view showing the whole structure of embodiment 4 of the present invention;
FIG. 6 is a sectional view showing the whole structure of embodiment 5 of the present invention;
FIG. 7 is a sectional view showing the whole structure of embodiment 6 of the present invention;
wherein: 1-a limiting part, 2-a tensile part, 3-an energizing part and 4-an energizing component.
Detailed Description
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Wherein: sigma t The tensile strength of the material of the tensile part;
d is a tensile part;
t is a tensile part;
the material of rupture disk body can select for steel, copper product, aluminum alloy, titanium alloy, and limit bit 1 is equipped with the sealing washer about both sides, improves the holistic sealing performance of CO2 fracturing ware by a wide margin.
In example 2, as shown in fig. 3, unlike example 1, the connection between the stopper portion 1 and the tensile portion 2 is a right angle or an arc lead angle, and the connection between the tensile portion 2 and the energizing portion 3 is a right angle or an arc lead angle.
In example 3, as shown in fig. 4, unlike example 1, the inner diameter of the upper cavity of the tensile portion 2 is larger than the inner diameter of the lower cavity, and the joints between the upper cavity and the tensile portion, and between the upper cavity and the lower cavity of the tensile portion 2 are all processed into arc-shaped lead angles.
Embodiment 4, as shown in fig. 5, different from embodiment 2, an energizing member 4 is further disposed at an upper end of the energizing portion 3, the energizing member 4 is also in threaded connection with the energizing portion 3, specifically, a threaded blind hole is formed in the middle of the energizing portion 3, a stud corresponding to the threaded blind hole is formed at a lower end of the energizing member 4, and further, the energizing member 4 is connected with the energizing portion 3 through the threaded blind hole and the stud.
In example 5, as shown in fig. 6, unlike example 4, the energizing member 4 is processed into a conical shape, and the energizing member 4 and the energizing portion 3 are integrally molded.
In example 6, as shown in fig. 7, the energizer member 4 is processed into a truncated cone shape, unlike in example 5.
The specific implementation is as follows:
example 1, the inner diameter D of the tensile portion was 35mm, the thickness T was 8mm, the material was an aluminum alloy material having a tensile strength of 400MPa, and the formula P was 4 σ ═ according to the burst pressure t *(T 2 +DT)/D 2 The explosion pressure of the obtained type of rupture disk is 449.3 MPa.
Example 2, the energizing part 3 is 50mm thick, the energizing member 4 is processed into a conical shape with a height of 30mm, the limiting part 1 is 64mm in outer diameter and 54mm in inner diameter, the tensile part is 54mm in inner diameter D, the tensile part is 8mm in thickness T, an aluminum alloy with a tensile strength of 400MPa is selected as a material, and a formula P is calculated according to the burst pressure4*σ t *(T 2 +DT)/D 2 The obtained rupture disk has the rupture pressure of 272.1 MPa.
Example 3, the outer diameter of the stopper 1 was 90mm, the inner diameter was 80mm, the inner diameter D of the tensile portion was 80mm, the thickness T was 10mm, the material was an aluminum alloy material with a tensile strength of 600MPa, and the formula P was 4 × σ according to the calculation of the burst pressure t *(T 2 +DT)/D 2 The obtained rupture disk has the rupture pressure of 337.5 MPa.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. For CO 2 The rupture disk of the fracturing device comprises a rupture disk body and is characterized in that: the rupture disk body consists of an upper annular limiting position, a middle cylindrical tensile position and a lower cylindrical energizing position, the rupture pressure of the rupture disk body is determined by the tensile position, and the calculation formula of the rupture pressure is as follows: p-4 σ t *(T 2 +DT)/D 2 ；
Wherein: sigma t The tensile strength of the material of the tensile part;
d is the inner diameter of the cylinder;
t is the thickness of the cylinder.
2. A process for CO according to claim 1 2 The rupture disk of the fracturing device is characterized in that: and the upper end of the energizing part is also provided with an energizing component.
3. A process for CO according to claim 2 2 The rupture disk of the fracturing device is characterized in that: the above-mentionedThe energizing member is provided in a hemispherical or conical shape.
4. A process for CO according to claim 1 2 The rupture disk of the fracturing device is characterized in that: and the upper surface and the lower surface of the limiting position are provided with sealing rings.
5. A process for CO according to claim 1 2 The rupture disk of the fracturing device is characterized in that: the joint of the limiting part and the tensile part is a right angle or an arc-shaped lead angle.
6. A process for CO according to claim 1 2 The rupture disk of the fracturing device is characterized in that: the joint of the tensile part and the energizing part is a right angle or an arc-shaped lead angle.
7. A process for CO according to claim 2 2 The rupture disk of the fracturing device is characterized in that: the inner diameter of the ring of the limiting position is 10-80 mm, the outer diameter of the ring is 20-90 mm, the inner diameter D of the tensile position is 10-80 mm, the thickness T of the tensile position is 0.1-10 mm, the inner diameter of the limiting position is 10-80 mm, the outer diameter of the limiting position is 20-90 mm, and the height of the energizing position is 10-100 mm.
8. A process for CO according to claim 1 2 The rupture disk of the fracturing device is characterized in that: the limiting part, the tensile part and the energizing part are integrally formed.
9. A process for CO according to claim 1 2 The rupture disk of the fracturing device is characterized in that: the limiting part, the tensile part and the energizing part are connected with each other through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110458812.0A CN113217684B (en) | 2021-04-27 | 2021-04-27 | For CO 2 Novel rupture disk of fracturing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110458812.0A CN113217684B (en) | 2021-04-27 | 2021-04-27 | For CO 2 Novel rupture disk of fracturing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113217684A CN113217684A (en) | 2021-08-06 |
| CN113217684B true CN113217684B (en) | 2022-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110458812.0A Active CN113217684B (en) | 2021-04-27 | 2021-04-27 | For CO 2 Novel rupture disk of fracturing device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1415360A (en) * | 1973-06-08 | 1975-11-26 | Energy Secretary Of State | Explosively operated rapid release valves |
| CN1730995A (en) * | 2004-08-05 | 2006-02-08 | 大连理工大学 | Self-holding burst disc without fragment |
| CN101711320A (en) * | 2007-05-25 | 2010-05-19 | Tsm公司 | Single-action discharge valve |
| CN101737540A (en) * | 2009-12-25 | 2010-06-16 | 大连理工安全装备有限公司 | Rupture disk for non-welding gas cylinders |
| CN204573228U (en) * | 2015-03-27 | 2015-08-19 | 中国水利水电第一工程局有限公司 | A kind of blasting piece device |
| CN110793403A (en) * | 2019-11-19 | 2020-02-14 | 中交第二公路勘察设计研究院有限公司 | Novel high-efficient carbon dioxide phase transition send and splits ware |
-
2021
- 2021-04-27 CN CN202110458812.0A patent/CN113217684B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1415360A (en) * | 1973-06-08 | 1975-11-26 | Energy Secretary Of State | Explosively operated rapid release valves |
| CN1730995A (en) * | 2004-08-05 | 2006-02-08 | 大连理工大学 | Self-holding burst disc without fragment |
| CN101711320A (en) * | 2007-05-25 | 2010-05-19 | Tsm公司 | Single-action discharge valve |
| CN101737540A (en) * | 2009-12-25 | 2010-06-16 | 大连理工安全装备有限公司 | Rupture disk for non-welding gas cylinders |
| CN204573228U (en) * | 2015-03-27 | 2015-08-19 | 中国水利水电第一工程局有限公司 | A kind of blasting piece device |
| CN110793403A (en) * | 2019-11-19 | 2020-02-14 | 中交第二公路勘察设计研究院有限公司 | Novel high-efficient carbon dioxide phase transition send and splits ware |
Non-Patent Citations (2)
| Title |
|---|
| 二氧化碳相变技术应用于新型震源研发的可行性研究;李稳等;《地球物理学报》;20200731;第63卷(第7期);第2605-2616页 * |
| 气相压裂增透技术在煤巷掘进工作面中的应用;苏恒等;《煤田地质与勘探》;20161031;第44卷(第5期);第49-52页 * |
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| CN113217684A (en) | 2021-08-06 |
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