AU2020102687A4 - Safety Protection Method for the Ultra-high Pressure Hydraulic Slotting Device - Google Patents
Safety Protection Method for the Ultra-high Pressure Hydraulic Slotting Device Download PDFInfo
- Publication number
- AU2020102687A4 AU2020102687A4 AU2020102687A AU2020102687A AU2020102687A4 AU 2020102687 A4 AU2020102687 A4 AU 2020102687A4 AU 2020102687 A AU2020102687 A AU 2020102687A AU 2020102687 A AU2020102687 A AU 2020102687A AU 2020102687 A4 AU2020102687 A4 AU 2020102687A4
- Authority
- AU
- Australia
- Prior art keywords
- ultra
- high pressure
- safety
- safety protection
- hosepipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/60—Slitting by jets of water or other liquid
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
Abstract
The invention relates to a safety protection method for the ultra-high pressure hydraulic
slotting device, belonging to the technical field of coal mine safety protection, which comprises
the following steps of, S: The adjustable safety valve is installed on the ultra-high pressure
fresh water pump to realize the water source safety protection of the ultra-high pressure
hydraulic slotting device; S2: The ultra-high pressure hydraulic hosepipe, the ultra-high
pressure rotating water tail and the ultra-high pressure sealing drill pipe are connected between
the ultra-high pressure fresh water pump and the high and low pressure conversion slotting
device to realize the safety protection of the transmission process of the ultra-high pressure
water; S3: The remote operation platform is set up on the ultra-high pressure hydraulic
hosepipe to ensure the operation safety of the ultra-high pressure hydraulic slotting operation;
S4: Specific safety protection measures are taken at the joints between the ultra-high pressure
hydraulic hosepipes and between the ultra-high pressure rotating hosepipe and the ultra-high
pressure hydraulic hosepipe, so as to realize the safety protection of the connection position of
the ultra-high pressure hydraulic hosepipe. The invention sets up a complete safety protection
system that greatly improves the operation safety of the high-pressure hydraulic slotting device,
and effectively avoids the occurrence of equipment safety accidents.
-1/2
Ultra-high pressure fresh water pump is installed with adjustable safety
First class protection: valve, which can effectively prevent the pressure overload ofultra-high
pressure fresh water pump. When the pump output pressure exceeds the
Safety protection ofsource ofultra- threshold value, the safety valve automatically opens for pressure
relief. When the pump is re-started, the internal components ofthe
safety valve automatically reset and can be reused.
The ultra-high pressure hydraulic hosepipe is mainly made ofouter
Second class protection: PVC steel wire rubber hose and inner steel wire spiral hose, which can
bear 150 MPa and ensure the safe transmission of high pressure water
Safety protection ofultra-high of lOOMPa. In addition, the ultra-high pressure rotating water tail and
ultra-high pressure sealing drill pipe meet the high pressure sealing
transmission requirements.
Third class protection: The long-distance operation ofultra-high pressure hydraulic slotting is
achieved with the remote operation platform, to ensure that the on-site
Safety protection ofremote operators timely grasp the situation ofslotting, and the safety of
operation personnel is improved.
The ultra-high pressure water transmission hose is connected with high
precision and high-strength thread transition joint, with high-pressure
Four class protection: rubber hose sheath and anti-stripping chain at the end of the hosepipe for
secondary protection. The high-precision thread taper joint is adopted to
connect the high-pressure rotating water tail and ultra-high-pressure
key components ofultra-high hosepipe, as well as the installation ofultra-high-pressure rotating water
pressure water transmission tail sheath. Ensure tight connection and ensure the safety of high-pressure
water transmission connection.
Figure 1
Description
-1/2 Ultra-high pressure fresh water pump is installed with adjustable safety First class protection: valve, which can effectively prevent the pressure overload ofultra-high pressure fresh water pump. When the pump output pressure exceeds the Safety protection ofsource ofultra- threshold value, the safety valve automatically opens for pressure relief. When the pump is re-started, the internal components ofthe safety valve automatically reset and can be reused.
The ultra-high pressure hydraulic hosepipe is mainly made ofouter Second class protection: PVC steel wire rubber hose and inner steel wire spiral hose, which can bear 150 MPa and ensure the safe transmission of high pressure water Safety protection ofultra-high of lOOMPa. In addition, the ultra-high pressure rotating water tail and ultra-high pressure sealing drill pipe meet the high pressure sealing transmission requirements.
Third class protection: The long-distance operation ofultra-high pressure hydraulic slotting is achieved with the remote operation platform, to ensure that the on-site Safety protection ofremote operators timely grasp the situation ofslotting, and the safety of operation personnel is improved.
The ultra-high pressure water transmission hose is connected with high precision and high-strength thread transition joint, with high-pressure Four class protection: rubber hose sheath and anti-stripping chain at the end of the hosepipe for secondary protection. The high-precision thread taper joint is adopted to connect the high-pressure rotating water tail and ultra-high-pressure key components ofultra-high hosepipe, as well as the installation ofultra-high-pressure rotating water pressure water transmission tail sheath. Ensure tight connection and ensure the safety of high-pressure water transmission connection.
Figure 1
Safety Protection Method for the Ultra-high Pressure Hydraulic Slotting Device
[0001] The invention belongs to the technical field of coal mine safety protection, and relates to a safety protection method of the ultra-high pressure hydraulic slotting device.
[0002] The coal resources in China are widely distributed and rich in reserves, and the conditions of coal seam occurrence are complex. The high gas outburst mine and the percussive ground pressure mine account for a large proportion. In recent years, with the continuous development of domestic production technology and equipment level, shallow coal resources gradually dried up and turned to deep mining. Coal seam is characterized by high ground stress, high gas pressure, high gas content and low permeability, which can easily cause coal-rock gas dynamic disaster, impact ground pressure or combined dynamic disaster that seriously restrict the safety production of coal mine. At present, hydraulic measures are generally adopted in coal mines to improve the effect of pressure relief anti-reflection, wherein the pressure of water jet is raised to 100MPa by the ultra-high pressure hydraulic slotting technique, and the coal seam around the drilling hole is slotted annularly by the ultra-high pressure water jet, which plays a significant role in pressure relief and anti-reflection. Compared with other hydraulic measures, the ultra-high pressure hydraulic slotting technology has stronger coal breaking ability and higher controllability, which can significantly improve the effect of coal seam gas treatment and effectively reduce the risk of stress-dominated coal-rock dynamic disasters.
[0003] The efficient and safe operation of the ultra-high pressure hydraulic slotting device is the key factor to ensure the smooth implementation of the hydraulic slotting technology. Strengthening the safety protection measures can effectively avoid the occurrence of equipment safety accidents. The ultra-high pressure hydraulic slotting device mainly includes the sequential connection of the ultra-high pressure fresh water pump, the ultra-high pressure hydraulic hosepipe, the remote operating platform, the ultra-high pressure rotating water tail, the ultra-high pressure sealing drill pipe, the high and low pressure conversion slotting device, the diamond drill bit and other main parts. In the process of on-site slotting, the ultra-high pressure hydraulic slotting device keeps high load and high pressure operation. Compared with conventional fresh water pump hydraulic technology of the coal mine, the safety protection measures should be taken in the whole set of equipment, the ultra-high pressure water transmission and the ultra-high hydraulic slotting remote operation, etc. Therefore, it is urgent to explore a full-scale safety protection measure of the ultra-high pressure hydraulic slotting device to ensure the reliable operation of the equipment underground.
[0004] In view of this, the purpose of the invention is to provide a safety protection method for the ultra-high pressure hydraulic slotting device, which can effectively prevent problems such as overloading of the equipment and leakage of pipeline connection, ensure the safe and reliable operation of the ultra-high pressure hydraulic slotting device and ensure the safety of construction personnel.
[0005] For the purpose mentioned above, the invention provides the following technical scheme: A safety protection method for ultra-high pressure hydraulic slotting device, including the following steps,
[0006] SI: The adjustable safety valve is installed on the ultra-high pressure fresh water pump to realize the water source safety protection of the ultra-high pressure hydraulic slotting device;
[0007] S2: The ultra-high pressure water transmission safety measures are adopted on the ultra-high pressure hydraulic hosepipe, the ultra-high pressure rotating water tail and the ultra-high pressure sealing drill pipe to realize the safety protection of ultra-high pressure water transmission ;
[0008] S3: The remote operation platform is set up on the ultra-high pressure hydraulic hosepipe to realize the operation safety protection of the ultra-high pressure hydraulic slotting;
[0009] S4: The connection safety protection measures are taken at the joints between the ultra high pressure hydraulic hosepipes and between the ultra-high pressure rotating water tail and the ultra-high pressure hydraulic hosepipe to realize the safety protection of the connection position of ultra-high pressure water transmission.
[0010] Optionally, in step Sl, he adjustable safety valve is set to 105~110 MPa as the safety threshold value.
[0011] Optionally, in step SI, he adjustable safety value is set up with automatic reset assembly for reset.
[0012] Optionally, the safety measures for ultra-high pressure water transmission in step S2 include the use of the outer PVC steel wire rubber hose and the inner steel wire spiral rubber hose in ultra-high pressure hydraulic hosepipes.
[0013] Optionally, the working pressure of the outer PVC steel wire rubber hose of the ultra high pressure hydraulic hosepipe is 45-50 MPa; the inner steel wire spiral rubber hose of the ultra high pressure hydraulic hosepipe is composed of the inner rubber layer and 6 steel wire spiral layers, of which the working pressure range is 0~150 MPa, the minimum blasting pressure is 400 MPa, and the safety factor is 1.5.
[0014] Optionally, the safety measures of ultra-high pressure water transmission in step S2 also include the use of the ultra-high pressure rotating water tail with the working pressure range of ~150 MPa and the safety factor of 1.5.
[0015] Optionally, the safety measures of ultra-high pressure water transmission in step S2 also include the adoption of the seamless steel pipe ultra-high pressure sealing drill pipe in producing ultra-high pressure sealing drill pipe, and of the taper thread sealing structure at the outer cone thread of the ultra-high pressure sealing drill pipe, and the maximum pressure value of the ultra-high pressure sealing drill pipe is > 120 MPa.
[0016] Optionally, the remote operating platform comprises the closed circuit switch of the ultra high pressure fresh water pump for opening and closing the ultra-high pressure fresh water pump and the overflow valve for regulating pressure.
[0017] Optionally, in step S4, the connection safety protection measures comprise the following steps ,
[0018] S41: The hosepipe transition joint is used for connection between the ultra-high pressure hydraulic hosepipes. After the connection, the high-pressure rubber hose jacket is set at the hosepipe transition joint and the anti-stripping chain is installed between the ends of the ultra-high pressure hydraulic hosepipes.
[0019] S42: The thread taper joint is used for connection between the ultra-high pressure rotating water tail and the ultra-high pressure hydraulic hosepipe, and the ultra-high pressure rotating water tail sheath is added after the connection.
[0020] The invention has the beneficial effects of: forming a complete safety protection system in the four aspects of adopting safety measures from the working source of the ultra-high pressure fresh water pump, the safe transmission of ultra-high pressure water, the safety protection of remote operation and the safety protection of key parts connecting. Through the establishment of the multi level safety system and the effective safety measures adopted, the safety of the high-pressure hydraulic slotting device is greatly improved, the safety accident of the equipment can be effectively avoided, and the safety of the underground operators can be guaranteed, indicating the on-site promotional application value.
[0021] Other advantages, objectives and characteristics of the present invention will, to some extent, be described in subsequent instructions, and, to some extent, shall be obvious to the technical personnel in the field based on the investigation below, or may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be achieved and acquired through the following instructions.
[0022] In order to provide a clearer picture of the purpose, technical scheme and advantages of the present invention, the detailed description of the present invention, which is best described in conjunction with the appended figures, is provided below:
[0023] Figure 1 shows the flow chart for the implementation of a safety protection method for the ultra-high pressure hydraulic slotting device;
[0024] Figure 2 shows the schematic chart for the implementation of a safety protection method for an ultra-high pressure hydraulic slotting device.
[0025] Figure marking: 1-water tank; 2-water pipe; 3-ultra-high pressure fresh water pump; 4 ultra-high pressure hydraulic hosepipe; 5-hosepipe transition joint; 6-high pressure rubber hose jacket; 7-anti-stripping chain; 8-remote operating platform; 9-ultra-high pressure rotating water tail; -ultra-high pressure rotating water tail sheath; 11-ultra-high pressure sealing drill pipe; 12-high and low pressure conversion slotting machine; 13-diamond bit; 14-coal seam; 15-drill hole; 16-slot.
[0026] Following is the specific embodiment of how the invention is to be implemented. Technicians in this field may use the content disclosed in this specification to easily understand other advantages and effects of the invention. The invention can also be implemented or applied in a different implementation method, and the details in this instruction can be modified or changed without deviating from the spirit of the invention based on different viewpoints and applications. It is important to note that the diagrams provided in the following embodiment illustrate the basic idea of the invention only by indication, and that the following embodiment and the features in the embodiment can be combined with each other without conflict.
[0027] Among that, the appended figures are used only for exemplary descriptions and represent only schematic figures, rather than physical figures, which cannot be understood as restrictions on the present invention; In order to better illustrate the embodiment of the present invention, some parts of the appended figures will be omitted, zoomed in or out, and do not represent the dimensions of the actual product; For the technical personnel in the field, it is understandable that some common knowledge structures in the appended figures and their descriptions may be omitted.
[0028] The same or similar labels in the appended figures of the embodiment of the present invention correspond to the same or similar parts; In the description of the present invention, it is necessary to understand that, if the terms "up", "down", "left", "right", "front", "back", etc. that indicate the orientation or position relationship based on the orientation or position relation shown in the appended figures, it is only for the purpose of facilitating the description of the present invention and simplifying the description, rather than indicating or implying that the device or component must have a specific orientation, or constructed and operated in a particular direction, so the description terms of the position relationship in the appended figures only applies for exemplary description, and shall not be understood as the limitation of the invention. The specific meaning of the above terms might be understood according to specific situations by the ordinary technicians in this technical field.
[0029] Please refer to Figure 1 for the flow chart for the implementation of a safety protection method for the ultra-high pressure hydraulic slotting device, including the following steps,
[0030] Si: The adjustable safety valve is adjusted and installed on the ultra-high pressure fresh water pump 3, of which safety threshold value is 1OMpa. When the output pressure of the ultra-high pressure fresh water pump 3 exceeds the threshold value, the adjustable safety valve is opened automatically to relieve the pressure, so the safety protection of the source of the ultra-high pressure fresh water pump is achieved, classified as the first class safety protection. The adjustable safety valve can effectively prevent the pressure overload of the ultra-high pressure fresh water pump. When the output pressure of the ultra-high pressure fresh water pump exceeds the threshold value, the adjustable safety valve is opened automatically to relieve the pressure, so the safety protection of the source of the ultra-high pressure fresh water pump is achieved.
[0031] In this embodiment, the ultra-high pressure fresh water pump 3 adopts the pressure regulating principle of the overflow value. The adjustable safety valve is installed in the drainage cavity of the ultra-high pressure fresh water pump 3, which can prevent the decrease of the return liquid and the steep rise of the pressure when adjusting the overflow valve, and avoid the overload phenomenon when the high pressure water is discharged from the pump body.
[0032] After the installation of the adjustable safety valve is completed, open the ultra high pressure fresh water pump 3, adjust the overflow valve, adjust the water pressure to 1OMPa, check the self-relief pressure function of the adjustable safety valve. The automatic reset assembly is set inside the adjustable safety valve. When the fresh water pump starts again, the adjustable safety valve resets and the reuse is achieved.
[0033] S2: Please refer to Figure 2 for the schematic figure of the implementation for a safety protection method of the ultra-high pressure hydraulic slotting device. The ultra-high pressure hydraulic hosepipe 4, the ultra-high pressure rotating water tail 9, and the ultra-high pressure sealing drill pipe 11 are connected in turn between the ultra-high pressure fresh water pump 3 and the high and low pressure conversion slotting device 12. The ultra-high pressure water transmission safety protection is adopted on the ultra-high pressure hydraulic hosepipe 4, the ultra-high pressure rotating water tail 9, and the ultra-high pressure sealing drill pipe 11, so as to realize the safety protection of the ultra-high pressure water transmission from the ultra high pressure fresh water pump 3 to the high and low pressure conversion slotting device 12, classified as the second class safety protection. The high and low pressure conversion slotting device 12 is equipped with diamond drill bit 13 for the convenient drilling of the coal seam.
[0034] In this embodiment, the safety measures of ultra-high pressure water transmission include that the ultra-high pressure hydraulic hosepipe 4 adopts the structure of the outer PVC steel wire rubber hose and the inner steel wire spiral hose. The outer PVC steel wire rubber hose and the inner steel wire spiral hose forms a double safety protection. The working pressure of the outer PVC steel wire rubber hose of the ultra-high pressure hydraulic hosepipe 4 is 45-5OMpa, which can protect the inner steel wire spiral hose, and it is flexible and convenient for the laying of water pipeline. The inner steel wire spiral hose of the ultra-high pressure hydraulic hosepipe 4 is composed of the inner rubber layer and 6 steel wire spiral layers. Its working pressure range is ~150 MPa, and its minimum blasting pressure is 400 MPa. Its safety factor is 1.5. The working pressure range of ultra-high pressure rotating water tail 9 is 0-150 MPa, its safety factor is 1.5, and the ultra-high pressure rotating water tail 9 adopts gap sealing as the sealing method, which has sensitive rotation and strong sealing property under ultra-high pressure conditions. Ultra-high pressure sealing drill pipe 11 is made of high strength seamless steel pipe. The whole thread is machined on the basis of the single drill pipe. The thread is strong and wear-resistant. The outer cone thread of the ultra-high pressure sealing drill pipe 11 is designed with taper thread, and the front end of the outer cone thread is of cone surface, of which the sealing property relies on the cone surface and the three sealings for implementation. In this embodiment, the maximum pressure bearing value of ultra-high pressure sealing drill pipe 11 is 120 MPa.
[0035] S3: Ultra-high pressure hydraulic hosepipe 4 is provided with the remote operating platform 8, which realizes the long-distance operation of the ultra-high pressure hydraulic hosepipe 4, ensures the operation safety, and realizes the remote operation safety protection, classified as the third safety protection. Preferably, the long-distance transmission distance is less than 100m, and the remote operating platform 8 is arranged in the middle of the ultra-high pressure hydraulic hosepipe 4 to balance the working pressure.
[0036] In this embodiment, the remote operation platform 8 comprises the ultra-high pressure fresh water closed circuit switches and the overflow value, so as to realize the open and close and adjusting function of the water pump. The high precision screw is adopted to connect the ultra-high pressure fresh water pump 3 and the ultra-high pressure hydraulic hosepipe 4. The ultra-high pressure hydraulic hosepipe 4 is provided with sealing gasket inside so as to realize the safety transmission of ultra-high pressure water.
[0037] S4: Safety protection measures shall be taken at the connection between the ultra high pressure hydraulic hosepipes 4 and between the ultra-high pressure rotating hose 9 and the ultra-high pressure hydraulic hosepipe 4 to realize the safety protection of the connection of the key parts of the ultra-high pressure water transmission, classified as the fourth class safety protection. This embodiment includes the following steps:
[0038] S41: The hosepipe transition joint 5 with high precision and high strength thread is adopted between the ultra-high pressure hydraulic hosepipes 4. The hosepipe transition joint 5 is added with high pressure rubber hose sheath 6 after the connection. The ultra-high pressure hydraulic hosepipe 4 is further equipped with the anti-stripping chain 7 at the end connection position for the secondary protection.
[0039] S42: Ultra-high pressure rotating water tail 9 and ultra-high pressure hydraulic hosepipe 4 are connected by high precision thread taper joint. After the connection, the ultra high pressure rotating water tail sheath 10 is added to ensure tight connection and avoid water leakage.
[0040] In actual use, drilling hole 15 is implemented in coal seam 14. After drilling hole is achieved, the ultra-high pressure fresh water pump 3 is opened through the closed circuit switch of the ultra-high pressure water pump on the remote operation platform 8. After normal reverse water of drilling hole 15, adjust the overflow valve on the remote operation platform 8 to raise the water pressure to 100 MPa to conduct slotting for the slot 16. The back-slotting is adopted in the drilling hole 15. After the slotting is completed according to the construction design, exit the drill pipe to finish the work of slotting.
[0041] Finally, it is stated that the above embodiment shall be used only to describe the technical scheme of the present invention and not to limit it, and, notwithstanding the detailed description of the present invention referring to the better embodiment, it shall be understood by the ordinary technical personnel in this field that the technical scheme of the present invention may be modified or replaced equally without contravention of the purposes and scope of the technical scheme, and shall be covered in the scope of the claims of the present invention.
Claims (9)
1. A Safety protection method for the ultra-high pressure hydraulic slotting device, which is
characterized by: including the following steps of,
Sl: The adjustable safety valve is installed on the ultra-high pressure fresh water pump to realize the water source safety protection of the ultra-high pressure hydraulic slotting device; S2: The ultra-high pressure water transmission safety measures are adopted on the ultra-high pressure hydraulic hosepipe, the ultra-high pressure rotating water tail and the ultra-high pressure sealing drill pipe to realize the safety protection of ultra-high pressure water transmission;
S3: The remote operation platform is set up on the ultra-high pressure hydraulic hosepipe to realize the operation safety protection of the ultra-high pressure hydraulic slotting; S4: The connection safety protection measures are taken at the joints between the ultra-high pressure hydraulic hosepipes and between the ultra-high pressure rotating water tail and the ultra-high pressure hydraulic hosepipe to realize the safety protection of the connection position of ultra high pressure water transmission.
2. A safety protection method of the ultra-high pressure hydraulic slotting described in claim 1, which is characterized in that: in step Sl, the adjustable safety valve is set to 105~110 MPa as the safety threshold value.
3. A safety protection method of the ultra-high pressure hydraulic slotting described in claim 1, which is characterized in that: in step S1, the adjustable safety value is set up with automatic reset assembly for reset.
4. A safety protection method of the ultra-high pressure hydraulic slotting described in claim 1, which is characterized in that the safety measures for ultra-high pressure water transmission in step S2 include the use of the outer PVC steel wire rubber hose and the inner steel wire spiral rubber hose in ultra-high pressure hydraulic hosepipes.
5. A safety protection method of the ultra-high pressure hydraulic slotting described in claim 1, which is characterized in that the working pressure of the outer PVC steel wire rubber hose of the ultra-high pressure hydraulic hosepipe is 45~50 MPa; the inner steel wire spiral rubber hose of the ultra-high pressure hydraulic hosepipe is composed of the inner rubber layer and 6 steel wire spiral layers, of which the working pressure range is 0~150 MPa, the minimum blasting pressure is 400 MPa, and the safety factor is 1.5.
6. A safety protection method of the ultra-high pressure hydraulic slotting described in claim 1, which is characterized in that the safety measures of ultra-high pressure water transmission in step S2 also include the use of the ultra-high pressure rotating water tail with the working pressure range of 0~150 MPa and the safety factor of 1.5.
7. A safety protection method of the ultra-high pressure hydraulic slotting described in claim 1, which is characterized in that the safety measures of ultra-high pressure water transmission in step S2 also include the adoption of the seamless steel pipe ultra-high pressure sealing drill pipe in producing ultra-high pressure sealing drill pipe, and of the taper thread sealing structure at the outer cone thread of the ultra-high pressure sealing drill pipe, and the maximum pressure value of the ultra-high pressure sealing drill pipe is > 120 MPa.
8. A safety protection method of the ultra-high pressure hydraulic slotting described in claim 1, which is characterized in that the remote operating platform comprises the closed circuit switch of the ultra-high pressure fresh water pump for opening and closing the ultra high pressure fresh water pump and the overflow valve for regulating pressure.
9. A safety protection method of the ultra-high pressure hydraulic slotting described in claim 1, which is characterized in that in step S4, the connection safety protection measures comprise the following steps,
S41: The hosepipe transition joint is used for connection between the ultra-high pressure hydraulic hosepipes. After the connection, the high-pressure rubber hose jacket is set at the hosepipe transition joint and the anti-stripping chain is installed between the ends of the ultra high pressure hydraulic hosepipes.
S42: The thread taper joint is used for connection between the ultra-high pressure rotating water tail and the ultra-high pressure hydraulic hosepipe, and the ultra-high pressure rotating water tail sheath is added after the connection.
-1/2- Ultra-high pressure fresh water pump is installed with adjustable safety First class protection: evalve, 1 which can effectively prevent the pressure overload of ultra-high pressure fresh water pump. When the pump output pressure exceeds the Safety protection of source of ultra- threshold value, the safety valve automatically opens for pressure relief. When the pump is re-started, the internal components of the safety valve automatically reset and can be reused.
The ultra-high pressure hydraulic hosepipe is mainly made of outer Second class protection: PVC steel wire rubber hose and inner steel wire spiral hose, which can bear 150 MPa and ensure the safe transmission of high pressure water 2020102687
Safety protection of ultra-high of 100MPa. In addition, the ultra-high pressure rotating water tail and ultra-high pressure sealing drill pipe meet the high pressure sealing transmission requirements.
Third class protection: The long-distance operation of ultra-high pressure hydraulic slotting is achieved with the remote operation platform, to ensure that the on-site Safety protection of remote operators timely grasp the situation of slotting, and the safety of operation personnel is improved.
The ultra-high pressure water transmission hose is connected with high- precision and high-strength thread transition joint, with high-pressure Four class protection: rubber hose sheath and anti-stripping chain at the end of the hosepipe for secondary protection. The high-precision thread taper joint is adopted to Safety protection for connection of connect the high-pressure rotating water tail and ultra-high-pressure key components of ultra-high hosepipe, as well as the installation of ultra-high-pressure rotating water pressure water transmission tail sheath. Ensure tight connection and ensure the safety of high-pressure water transmission connection.
Figure 1
Figure 2 -2/2-
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2020102687A AU2020102687A4 (en) | 2020-10-12 | 2020-10-12 | Safety Protection Method for the Ultra-high Pressure Hydraulic Slotting Device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2020102687A AU2020102687A4 (en) | 2020-10-12 | 2020-10-12 | Safety Protection Method for the Ultra-high Pressure Hydraulic Slotting Device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2020102687A4 true AU2020102687A4 (en) | 2020-12-03 |
Family
ID=73551723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2020102687A Active AU2020102687A4 (en) | 2020-10-12 | 2020-10-12 | Safety Protection Method for the Ultra-high Pressure Hydraulic Slotting Device |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2020102687A4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113030429A (en) * | 2021-03-15 | 2021-06-25 | 中国矿业大学 | Multifunctional coal and gas outburst physical simulation device |
-
2020
- 2020-10-12 AU AU2020102687A patent/AU2020102687A4/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113030429A (en) * | 2021-03-15 | 2021-06-25 | 中国矿业大学 | Multifunctional coal and gas outburst physical simulation device |
| CN113030429B (en) * | 2021-03-15 | 2022-07-05 | 中国矿业大学 | Multifunctional coal and gas outburst physical simulation device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2020102687A4 (en) | Safety Protection Method for the Ultra-high Pressure Hydraulic Slotting Device | |
| CN107315879B (en) | Method for determining critical water pressure and critical thickness of water-rich tunnel face water inrush destruction | |
| CN107575249B (en) | High-pressure slurry wall protection method and device | |
| CN111335861A (en) | Safety protection method for ultrahigh-pressure hydraulic slotting device | |
| CN102003202B (en) | Construction method of safety emergency rescue and escape system for mine | |
| CN105780792B (en) | A kind of foundation pit high water head Dewatering by pressure reduction well shut-in well method and structure of shunting in a well | |
| CN110374540A (en) | Water control device and control hydraulic art are combined in a kind of protrusion-dispelling blowout prevention of mine detecting water by pilot hole aperture | |
| CN204139992U (en) | A kind of gas well at HTHP hermetic seal threaded connection structure of petroleum casing pipe | |
| CN107558940A (en) | A kind of light-duty well repairing device in deep water hydrocarbon field and method | |
| CN101915063B (en) | Ground well casing capable of preventing mining damage | |
| CN214698204U (en) | Double-control constant-pressure fluid delivery pump | |
| CN114109459B (en) | Anti-impact and anti-danger roadway support-surrounding rock expansion integrated system | |
| CN201738824U (en) | Ground drilling casing capable of preventing mining damage | |
| CN108286420A (en) | A kind of caulking tube string and oil/gas well blocking method | |
| CN111894559B (en) | Inner channel decompression restrictor | |
| CN210483633U (en) | Direct-current type control underwater test tree | |
| CN107504315A (en) | A kind of construction method that Jiang Guandao is got over using baric systerm reparation seepage | |
| CN106640090B (en) | Newly-built Coal Mine depth vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions | |
| CN217380434U (en) | Workover operation construction tubular column bleeder | |
| CN203285375U (en) | Blocking gauge cutter | |
| CN218780354U (en) | Water stop structure applied to vertical pipe jacking construction | |
| CN206681739U (en) | Newly-built Coal Mine depth vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions | |
| CN217632374U (en) | Special float valve for coiled tubing | |
| CN214741334U (en) | Gushing-proof device for rectangular pipe-jacking slag outlet in water-rich soft soil area | |
| CN205530311U (en) | Foundation ditch high water head decompression precipitation well shut -in well structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) |