A high-temperature water drainage and blowout prevention device and its usage method

Abstract

The present invention discloses a high-temperature water drainage and anti-blowout device and its usage method, belonging to the technical field of advanced geological drilling grouting. It includes a water inlet valve, a pipe-piercing seal valve, a plugging and drainage four-way joint, and a sealing end that are detachably and hermetically connected in sequence along the drainage direction on the same horizontal axis; the first interface of the plugging and drainage four-way joint is connected to the sealing end, and the second interface of the plugging and drainage four-way joint is connected to the pipe-piercing seal valve; a high-temperature drainage valve and a high-temperature water drainage pipe are sequentially and hermetically connected to the third interface of the plugging and drainage four-way joint, and both the high-temperature drainage valve and the high-temperature water drainage pipe are located below the plugging and drainage four-way joint; the fourth interface of the plugging and drainage four-way joint is set as a low-temperature water injection port; the sealing end is provided with a through hole through which a drill pipe or a grouting pipe can be hermetically penetrated. The present invention realizes the anti-splash drainage of high-temperature water during the drilling grouting process under the geological conditions of high-temperature water occurrence, and avoids the influence of high-temperature water on the operation of equipment and the safety of personnel.

Description

Technical Field

[0001] The present invention belongs to the technical field of advanced geological drilling grouting, and particularly relates to a high-temperature water drainage and blowout prevention device and a usage method thereof. Background Art

[0002] In recent years, the scope of railway construction in China has been gradually expanding. Especially in the western plateau regions of China, transportation construction has been vigorously developed. Due to the complex geological conditions in plateau regions, during the tunnel construction process, the situations of high ground temperature and water-rich zones will occur more and more frequently, facing the danger of high-temperature water gushing.

[0003] The grouting method is a common process in tunnel construction. Due to the existence of high-temperature water, during the drilling grouting process, the phenomenon of high-temperature water backspray will occur, and the water gushing velocity is relatively large, which greatly reduces the labor productivity, endangers the health and safety of construction workers, seriously affects the working conditions of mechanical equipment, and leads to frequent equipment failures.

[0004] In view of the above problems, the present invention proposes a high-temperature water drainage and blowout prevention device. The current research progress of this type of device is as follows:

[0005] For example, a Chinese invention patent with the application number 202210610011.6 and the name of a curtain grouting construction device and method applicable to high-temperature hot spring water strata. It axially arranges a connected splash-proof unit and a grouting unit, and converges and drains high-temperature water through an outer cover and a drainage hopper, and the size and position of the outer cover and the drainage hopper are adjustable. The grouting pipeline can be prefabricated to prevent workers from being scalded during pipeline installation. However, this invention only collects and drains high-temperature water without cooling it, which has an impact on the working conditions of mechanical equipment such as drill pipes and grouting pipes.

[0006] A Chinese invention patent with the application number 202011384005.0 and the name of a grouting anchor device with a groundwater drainage function and its usage method. It sets a hollow structure inside the anchor for grouting, and collects and drains groundwater through a collection cover nested on the anchor, effectively reducing the groundwater splash phenomenon and reducing the water gushing velocity. However, the working conditions in the high-temperature water occurrence environment are not considered.

[0007] A Chinese utility model patent with the application number 202220611023.6 and the name of an advanced small guide pipe for grouting. The inner wall of its pipe body is threadedly connected with a baffle for pushing and blocking the slurry, and the baffle is detachably connected with a force-applying rod for driving the baffle to move. The slurry inlet hole is located within the moving stroke of the baffle, and the displacement of the slurry and the gushing water is restricted by the baffle. However, the slurry is pumped in laterally rather than forward, which has a certain impact on the grouting effect.

[0008] At present, during the grouting operation of drillers, a grout plug is often used to prevent the backflow of grout. The grouting hole is sealed by inflating or filling a liquid into the bladder to expand it. Inflating can block the backflow of grout with a pressure of 1 MPa, and filling with liquid can block the backflow of grout with a pressure of 5 MPa. Moreover, it is a disposable device and cannot be reused.

[0009] Based on a comprehensive analysis of the above devices and systems, the current technology and invention have the following deficiencies:

[0010] 1. Although the sudden water inrush prevention and drainage during the grouting process are considered, the grouting working conditions under the geological conditions of high geothermal temperature, high ground pressure, and rich high-temperature water in plateau areas such as Sichuan-Tibet are not considered. The influence of high-temperature water on grouting equipment is not considered. The treatment method mainly focuses on converging and draining, and the high-temperature water and high-temperature drill pipes are not cooled.

[0011] 2. Most of the devices are mechanical structures, with a low degree of intelligence, requiring manual operation, and cannot be reused.

[0012] 3. The device sealing performance is not considered. When replacing the drill pipe, the entire device needs to be disassembled, and it is impossible to ensure the replacement of device components in the state of working with the drill pipe.

[0013] 4. The existing equipment cannot achieve positive grouting in the same direction as the drilling direction while realizing sudden water inrush drainage.

[0014] 5. The existing equipment does not deal with rock debris and grout, resulting in low utilization efficiency and certain resource waste. Summary of the Invention

[0015] To solve the above problems, the present invention adopts the following technical solutions:

[0016] A high-temperature water drainage and blowout prevention device, comprising:

[0017] An inlet valve, a pipe-piercing seal valve, a plugging and drainage four-way joint, and a sealing end that are detachably and sealingly connected in sequence along the drainage direction on the same horizontal axis;

[0018] The first interface of the plugging and drainage four-way joint is connected to the sealing end, and the second interface of the plugging and drainage four-way joint is connected to the pipe-piercing seal valve; a high-temperature drainage valve and a high-temperature water drainage pipe are sequentially and sealingly connected to the third interface of the plugging and drainage four-way joint, and both the high-temperature drainage valve and the high-temperature water drainage pipe are located below the plugging and drainage four-way joint; a low-temperature water injection port is provided at the fourth interface of the plugging and drainage four-way joint;

[0019] The sealing end is provided with a through hole through which a drill pipe or a grouting pipe can be sealed.

[0020] Further, flow sensors and temperature sensors are provided on the pipeline of the low-temperature water injection port and the water outlet pipe of the high-temperature water diversion pipe. The flow sensors are used for monitoring the flow rates of the low-temperature water injection volume and the outflow volume of the high-temperature water diversion pipe, and the temperature sensors are used for monitoring the temperature of the low-temperature water injection volume and the water in the high-temperature water diversion pipe.

[0021] Further, the water inlet valve includes:

[0022] A water inlet valve body;

[0023] A first driving mechanism, which is located on the upper side of the water inlet valve body;

[0024] A gate plate, which is arranged inside the water inlet valve body. The first driving mechanism drives the up and down movement of the gate plate through a first valve rod to adjust the opening degree of the water inlet valve.

[0025] Further, the pipe-through sealing valve includes:

[0026] A pipe-through sealing valve body, and a water inlet and a water outlet are correspondingly arranged at both ends of the pipe-through sealing valve body;

[0027] Two second driving mechanisms, which are respectively located on the upper and lower sides of the pipe-through sealing valve body;

[0028] A double-opening gate plate, which is arranged in the cavity of the pipe-through sealing valve body. The second driving mechanism drives the up and down movement of the double-opening gate plate through a second valve rod to adjust the opening degree of the pipe-through sealing valve.

[0029] Further, a flared opening is provided at the connection between the second interface and the third interface of the plugging and diversion four-way.

[0030] Further, a floating sealing end cover is provided on one side of the sealing end close to the plugging and diversion four-way. A sealing groove is provided on one side of the sealing end close to the floating sealing end cover. A floating sealing gasket is provided at the sealing groove. A wear-resistant ring and a plurality of spaced sealing rings are provided in the through hole of the sealing end, and the wear-resistant ring is located on the side of the sealing ring away from the sealing groove.

[0031] Further, the sealing ring is a perfluoroether O-ring.

[0032] Further, a filter screen is provided in the high-temperature water diversion pipe.

[0033] Further, the drill pipe includes:

[0034] A drill pipe body;

[0035] A drill bit, which is connected to one end of the drill pipe body;

[0036] A check valve, which is connected to the other end of the drill pipe body.

[0037] A method for using a high-temperature water drainage and blowout prevention device, using the high-temperature water drainage and blowout prevention device described in any one of the above, the method includes the following steps:

[0038] S1. Installation of the blowout prevention device, pre-excavation in advance, installation of the hole mouth pipe, and successively install the water inlet valve, pipe penetration seal valve, plugging and drainage four-way, sealing end, high-temperature water drainage valve, high-temperature water drainage pipe, and penetrate the drill pipe through the sealing end, plugging and drainage four-way, pipe penetration seal valve and water inlet valve to the outside of the water inlet valve;

[0039] S2. Drilling and exposure, through the drill pipe tunneling, the exposed high-temperature water and the rock debris generated by rock breaking enter the blowout prevention device;

[0040] S3. Cooling, by injecting low-temperature water into the low-temperature water injection port of the plugging and drainage four-way, neutralizing and cooling the high-temperature water, and cooling the drill pipe; and controlling the low-temperature water injection volume and the temperature of the overall blowout prevention device through the controller;

[0041] S4. Rod sealing, after the grouting drilling tunneling is completed, the drill pipe retreats to the pipe penetration seal valve, closes the water inlet valve, opens the sealing end, completely withdraws the drill pipe, and replaces the grouting pipe to enter the device, closes the sealing end, and performs grouting;

[0042] When the components of the blowout prevention device need to be replaced, by closing the pipe penetration seal valve, making the pipe penetration seal valve and the grouting pipe in a sealed state, and replacing the components that need to be replaced;

[0043] S5. Drainage and utilization, the treated water and rock debris flow out through the high-temperature water drainage valve and the high-temperature water drainage pipe, and are used for slurry preparation and concrete modulation.

[0044] Beneficial effects:

[0045] 1. The present invention proposes a high-temperature water drainage and blowout prevention device, which can achieve the splash prevention and drainage of high-temperature water during the drilling and grouting process under the geological conditions where high-temperature water is stored. On the basis of converging and draining high-temperature water, the high-temperature water and the drill pipe can be cooled, prolonging the service life of the drill pipe and avoiding the influence of high temperature on the equipment;

[0046] 2. Through various sealing means such as a sealing end, a floating sealing end cover, a perfluoroether O-ring, a floating sealing pad, and a wear-resistant ring, the present invention can replace the system components during the operation state and prevent the leakage of high-temperature water;

[0047] 3. The present invention, through the cooperation of the master control system with the temperature sensor and the flowmeter, intelligently senses the overall temperature and operating state of the device, and performs servo control on the opening and closing of the device, realizing the controllability and intelligence of the overall system;

[0048] 4. Through hierarchical sealing, the present invention realizes the sealing replacement of the drill pipe and the grouting pipe, can perform forward grouting in the same direction as the drilling direction, helps to accurately control the grouting process, and significantly improves the grouting effect;

[0049] 5. The present invention proposes a construction process for high-temperature water blowout prevention and drainage, which processes, collects and utilizes the rock debris and water generated during the drilling process, and can be used for the preparation of concrete, making full use of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is the overall view of the high-temperature water drainage and blowout prevention device;

[0051] Figure 2 is the overall schematic diagram of the structure of the water inlet valve;

[0052] Figure 3 is the partial schematic diagram of the structure of the water inlet valve;

[0053] Figure 4 is the overall schematic diagram of the pipe-passing seal valve;

[0054] Figure 5 is the partial schematic diagram of the pipe-passing seal valve;

[0055] Figure 6 is the schematic diagram of the plugging and drainage four-way;

[0056] Figure 7 is the schematic diagram of the sealing end;

[0057] Figure 8 is the overall schematic diagram of the high-temperature water drainage pipe;

[0058] Figure 9 is the partial schematic diagram of the high-temperature water drainage pipe

[0059] Figure 10 is the schematic diagram of the drill pipe;

[0060] Figure 11 is the schematic diagram of the grouting pipe.

[0061] Among them, 1. Water inlet valve; 1.1. First servo motor; 1.2. Water inlet valve body; 1.3. First valve stem; 1.4. Gate plate; 2. Pipe-piercing seal valve; 2.1. Second servo motor; 2.2. Second valve stem; 2.3. Double-opening gate plate; 2.4. Sealing sleeve; 3. Plugging and drainage four-way; 3.1. Low-temperature water injection port; 3.2. Flared opening; 4. Sealing end; 4.1. Floating seal end cover; 4.2. Floating gasket; 4.3. Perfluoroether O-ring; 4.4. Wear-resistant ring; 5. Drill pipe; 5.1. Drill bit; 5.2. Drill pipe; 5.3. Check valve; 6. High-temperature water drainage valve; 7. High-temperature water drainage pipe; 7.1. Filter screen; 8. Cold water source; 9. Grouting pipe; 10. Controller; 11. Temperature sensor; 12. Flow sensor. Detailed implementation method

[0062] Embodiment 1

[0063] Reference Figures 1-11 , a high-temperature water drainage and blowout prevention device, comprising:

[0064] A water inlet valve 1, a pipe-piercing seal valve 2, a plugging and drainage four-way 3 and a sealing end 4 that are detachably and hermetically connected in sequence along the drainage direction on the same horizontal axis;

[0065] The first interface of the plugging and drainage four-way 3 is connected to the sealing end 4, and the second interface of the plugging and drainage four-way 3 is connected to the pipe-piercing seal valve 2; a high-temperature drainage valve and a high-temperature water drainage pipe 7 are hermetically connected in sequence to the third interface of the plugging and drainage four-way 3, and both the high-temperature drainage valve and the high-temperature water drainage pipe 7 are located below the plugging and drainage four-way 3; a low-temperature water injection port 3.1 is provided at the fourth interface of the plugging and drainage four-way 3;

[0066] The sealing end 4 is provided with a through hole through which a drill pipe 5 or a grouting pipe 9 can be hermetically penetrated.

[0067] In this embodiment, flow sensors 12 and temperature sensors 11 are provided on both the pipeline of the low-temperature water injection port 3.1 and the outlet pipe of the high-temperature water drainage pipe 7. The flow sensor 12 is used for monitoring the flow rates of the low-temperature water injection volume and the outflow volume of the high-temperature water drainage pipe 7, and the temperature sensor 11 is used for monitoring the temperature of the low-temperature water injection volume and the water in the high-temperature water drainage pipe 7.

[0068] During specific implementation, the flow sensor 12 is used for monitoring the flow rate of the low-temperature water injection volume, the temperature sensor 11 is used for sensing the temperature of the blowout prevention device, the flow sensor 12 and the temperature sensor 11 are electrically connected to a controller 10, and the controller 10 is electrically connected to a water pump, and the low-temperature water injection volume is realized through the opening and closing of the water pump.

[0069] Embodiment 2

[0070] To improve the practicality of the device, in this embodiment, further settings are made based on Embodiment 1. The water inlet valve 1 includes:

[0071] A water inlet valve body 1.2;

[0072] A first driving mechanism, which is located on the upper side of the water inlet valve body 1.2;

[0073] A gate plate 1.4, which is arranged inside the water inlet valve body 1.2. The first driving mechanism drives the up and down movement of the gate plate 1.4 through a first valve stem 1.3 to adjust the opening degree of the water inlet valve 1.

[0074] In this embodiment, the pipe-piercing seal valve 2 includes:

[0075] A pipe-piercing seal valve 2 body, and a water inlet and a water outlet are correspondingly arranged at both ends of the pipe-piercing seal valve 2 body;

[0076] Two second driving mechanisms, which are respectively located on the upper and lower sides of the pipe-piercing seal valve 2 body;

[0077] A double-opening gate plate 2.3, which is arranged in the cavity of the pipe-piercing seal valve 2 body. The second driving mechanism drives the up and down movement of the double-opening gate plate 2.3 through a second valve stem 2.2 to adjust the opening degree of the pipe-piercing seal valve 2.

[0078] In this embodiment, a flared portion 3.2 is provided at the connection between the second interface and the third interface of the plugging and drainage four-way 3 to ensure the smooth flow of high-temperature water, sediment, and cuttings in the device.

[0079] In this embodiment, a floating seal end cover 4.1 is provided on one side of the sealing end 4 close to the plugging and drainage four-way 3. A sealing groove is provided on the side of the sealing end 4 close to the floating seal end cover 4.1. A floating seal gasket 4.2 is provided at the sealing groove. A wear-resistant ring 4.4 and a plurality of spaced sealing rings are provided in the through hole of the sealing end 4, and the wear-resistant ring 4.4 is located on the side of the sealing ring away from the sealing groove.

[0080] In this embodiment, the sealing ring is a perfluoroether O-ring 4.3.

[0081] In this embodiment, a filter screen 7.1 is provided inside the high-temperature water drainage pipe 7.

[0082] The high-temperature drainage valve controls the outflow of the neutralized high-temperature water and cuttings from the blowout preventer device; the high-temperature water drainage pipe 7 drains and converges the cooled water and cuttings, and separates the water and cuttings through the filter screen 7.1 to prevent the cuttings from blocking the drainage pipe.

[0083] Preferably, the sealing ring is a perfluoroether O-ring 4.3, the gasket is a floating gasket 4.2, and the sealing end cover is a floating sealing end cover 4.1.

[0084] The floating sealing end cover 4.1 is used for slag removal and dust prevention of the device. Multiple perfluoroether seals are used for circumferential sealing of the device. Utilizing the characteristics of perfluoroether material with high temperature resistance and corrosion resistance, it has good sealing effect and service life; the floating gasket 4.2 can prevent high-temperature water from spraying out along the drill pipe 5 and ensure the sealing performance during the normal drilling process of the drill pipe 5; the wear-resistant ring 4.4 can limit the tangential displacement of the drill pipe 5 during the drilling process, ensure that the drill pipe 5 is located within the overall device, and can be replaced.

[0085] Furthermore, it further improves the rod sealing effect of the device under operating conditions. Through the opening and closing of the end, the replacement of the drill pipe 5 and the grouting pipe 9 can be carried out.

[0086] During specific implementation, the plugging and diversion four-way 3 is welded by seamless steel pipes. The low-temperature water inlet is located at the top of the plugging and diversion four-way 3. Low-temperature water is injected through the cold water source 8 to neutralize and cool down the high-temperature water in the blowout preventer device and cool down the drill pipe 5. At the same time, it can wash away the rock debris and sediment generated during drilling to prevent the device from being blocked.

[0087] In this embodiment, the drill pipe 5 includes:

[0088] The drill pipe body 5.2;

[0089] The drill bit 5.1, the drill bit 5.1 is connected to one end of the drill pipe body 5.2;

[0090] The check valve 5.3, the check valve 5.3 is connected to the other end of the drill pipe body 5.2.

[0091] The drilling and grouting construction is realized through the excavation of the drill bit 5.1. The check valve 5.3 is set to prevent the backspray of high-temperature water from affecting the grouting process.

[0092] It should be noted that the first driving mechanism controls the up and down movement of the gate 1.4 through the first valve rod 1.3 to adjust the opening size of the water inlet valve 1. Preferably, the water inlet valve 1 includes:

[0093] The first servo motor 1.1, the first servo motor 1.1 is located on the upper side of the water inlet valve body 1.2;

[0094] During specific implementation, in order to improve the stability of the device, a fixed bracket is provided on one side of the first servo motor 1.1, and the first servo motor 1.1 can slide relatively along the fixed bracket;

[0095] The first nut, the first nut is fixed to the upper end of the water inlet valve body 1.2, and an internal thread is provided inside the first nut;

[0096] The first valve stem 1.3, the first end of the first valve stem 1.3 is arranged inside the water inlet valve body 1.2, the second end at least partially extends outside the water inlet valve body 1.2, the second end of the first valve stem 1.3 is connected to the driving end of the first servo motor 1.1 and penetrates through the first nut, and the first valve stem 1.3 is provided with external threads corresponding to the internal threads;

[0097] The gate plate 1.4, the gate plate 1.4 is arranged inside the water inlet valve body 1.2, and the first end of the first valve stem 1.3 is rotatably connected to the gate plate 1.4. The up and down movement of the gate plate 1.4 is controlled by the first servo motor 1.1 to adjust the opening degree of the water inlet valve 1.

[0098] During specific implementation, the first end of the first valve stem 1.3 is rotatably connected to the gate plate 1.4 through a bearing.

[0099] During specific implementation, the controller 10 is electrically connected to the first servo motor 1.1, and the start and stop of the first servo motor 1.1 are controlled through the controller 10;

[0100] During actual use, the water inlet valve 1 can also be:

[0101] The water inlet valve body 1.2;

[0102] The first cylinder, the first cylinder is located on the upper side of the water inlet valve body 1.2;

[0103] The first sleeve, the first sleeve is fixed to the upper end of the water inlet valve body 1.2;

[0104] The first valve stem 1.3, the first end of the first valve stem 1.3 is arranged inside the water inlet valve body 1.2, the second end at least partially extends outside the water inlet valve body 1.2, the second end of the first valve stem 1.3 is connected to the driving end of the first cylinder and penetrates through the first sleeve;

[0105] The gate plate 1.4, the gate plate 1.4 is arranged inside the water inlet valve body 1.2, and the first end of the first valve stem 1.3 is rotatably connected to the gate plate 1.4. The up and down movement of the gate plate 1.4 is controlled by the first cylinder to adjust the opening degree of the water inlet valve 1.

[0106] During specific implementation, the controller 10 is electrically connected to the first cylinder, and the start and stop of the first cylinder are controlled through the controller 10.

[0107] It should be noted that the second driving mechanism controls the up and down movement of the double-opening gate plate 2.3 through the second valve stem 2.2 to adjust the opening degree of the pipe-piercing seal valve 2. Preferably, the pipe-piercing seal valve 2 includes:

[0108] The pipe-piercing seal valve 2 body;

[0109] Two second servo motors 2.1, which are respectively located on the upper and lower sides of the body of the pipe-passing sealing valve 2;

[0110] During specific implementation, in order to improve the stability of the device, a fixed bracket is provided on one side of the second servo motor 2.1, and the second servo motor 2.1 can slide relatively along the fixed bracket;

[0111] Two second nuts, which are respectively fixed at the upper and lower ends of the body of the water inlet valve 1.2, and internal threads are provided in the first nut;

[0112] Two second valve rods 2.2, which are arranged corresponding to the second servo motors 2.1, and the first ends of the two second valve rods 2.2 are both arranged inside the body of the pipe-passing sealing valve 2, the second ends both extend to the outside of the body of the pipe-passing sealing valve 2, and penetrate through the second nuts. The second ends of the second valve rods 2.2 are respectively connected to the driving ends of the two second servo motors 2.1, and external threads corresponding to the internal threads are provided on the second valve rods 2.2;

[0113] A double-opening gate plate 2.3, which is arranged in the cavity of the body of the pipe-passing sealing valve 2. The upper and lower sides of the double-opening gate plate 2.3 are respectively rotationally connected to the first ends of the two second valve rods 2.2. A hollow part is arranged at the central position of the double-opening gate plate 2.3, and the size of the hollow part corresponds to the drill pipe 5 or the grouting pipe 9;

[0114] Two sealing sleeves 2.4, which are symmetrically arranged on the upper and lower sides of the hollow part;

[0115] The opening degree of the pipe-passing sealing valve 2 is adjusted by controlling the up and down movement of the double-opening gate plate 2.3 through the second servo motor 2.1.

[0116] During specific implementation, the first end of the second valve rod 2.2 is rotationally connected to the double-opening gate plate 2.3 through a bearing.

[0117] During specific implementation, the controller 10 is electrically connected to the second servo motor 2.1, and the start and stop of the second servo motor 2.1 are controlled through the controller 10;

[0118] During actual use, the pipe-passing sealing valve 2 can also be:

[0119] The body of the pipe-passing sealing valve 2;

[0120] Two second cylinders, which are respectively located on the upper and lower sides of the body of the pipe-passing sealing valve 2;

[0121] Two second sleeves, which are respectively fixed at the upper and lower ends of the body of the water inlet valve 1.2;

[0122] Two second valve stems 2.2, the second valve stems 2.2 are arranged corresponding to the second cylinders, and the first ends of the two second valve stems 2.2 are both arranged inside the body of the pipe-piercing sealing valve 2, and the second ends both extend to the outside of the body of the pipe-piercing sealing valve 2 and penetrate through the second sleeve, and the second ends of the second valve stems 2.2 are respectively connected to the driving ends of the two second cylinders;

[0123] A double-opening gate 2.3, the double-opening gate 2.3 is arranged in the cavity of the body of the pipe-piercing sealing valve 2, the upper and lower sides of the double-opening gate 2.3 are respectively rotatably connected to the first ends of the two second valve stems 2.2, a hollow part is arranged at the central position of the double-opening gate 2.3, and the size of the hollow part is arranged corresponding to the drill pipe 5 or the grouting pipe 9;

[0124] Two sealing sleeves 2.4, the two sealing sleeves 2.4 are symmetrically arranged on the upper and lower sides of the hollow part;

[0125] The opening degree of the pipe-piercing sealing valve 2 is adjusted by controlling the up and down movement of the double-opening gate 2.3 through the second cylinder.

[0126] During specific implementation, the controller 10 is electrically connected to the second cylinder, and the start and stop of the second cylinder are controlled through the controller 10.

[0127] The present invention can perform grouting in the same direction as the drilling direction, realize the sealing of the device in the state of operating with a rod, and replace the device components without affecting the construction.

[0128] Embodiment 3

[0129] A method for using a high-temperature water diversion and blowout prevention device provided in this embodiment adopts the high-temperature water diversion and blowout prevention device provided in Embodiments 1-2, and the method includes the following steps:

[0130] S1. Installation of the blowout prevention device, pre-excavation ahead, installation of the hole mouth pipe, and sequential installation of the water inlet valve 1, the pipe-piercing sealing valve 2, the plugging and diversion four-way 3, the sealing end 4, the high-temperature water diversion valve 6, the high-temperature water diversion pipe 7, and penetrate the drill pipe 5 through the sealing end 4, the plugging and diversion four-way 3, the pipe-piercing sealing valve 2 and the water inlet valve 1 to the outside of the water inlet valve 1;

[0131] S2. Drilling and exposure, tunneling through the drill pipe 5, and the exposed high-temperature water and the rock debris generated by rock breaking enter the blowout prevention device;

[0132] S3. Cooling and cooling, injecting low-temperature water into the low-temperature water injection port 3.1 of the plugging and diversion four-way 3 to neutralize and cool the high-temperature water and cool the drill pipe 5; and controlling the injection amount of the low-temperature water through the temperature control component to control the temperature of the overall blowout prevention device;

[0133] S4. Rod seal. After the grouting borehole tunneling is completed, the drill rod 5 retreats to the pipe-passing seal valve 2, the water inlet valve 1 is closed, the sealing end 4 is opened, the drill rod 5 is completely withdrawn, and the grouting pipe 9 is replaced and inserted into the device. Then the sealing end 4 is closed for grouting.

[0134] When components of the blowout preventer need to be replaced, the pipe-passing seal valve 2 is closed to make the pipe-passing seal valve 2 and the grouting pipe 9 in a sealed state, and the components to be replaced are replaced.

[0135] S5. Drainage utilization. The treated water and rock debris flow out through the high-temperature water drainage valve 6 and the high-temperature water drainage pipe 7 and are used for slurry preparation and concrete modulation.

[0136] As described above, it is only a preferred embodiment of the present invention, and does not impose any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A high-temperature water drainage and blowout prevention device, characterized in that: include: The water inlet valve, pipe-penetrating sealing valve, plugging drainage spool and sealing end are located on the same horizontal axis and are detachably and sealedly connected in sequence along the drainage direction; the first interface of the plugging drainage spool is connected to the sealing end, and the second interface of the plugging drainage spool is connected to the pipe-penetrating sealing valve; the third interface of the plugging drainage spool is sealedly connected to the high-temperature drainage valve and the high-temperature water drainage pipe in sequence, and the high-temperature drainage valve and the high-temperature water drainage pipe are both located on the lower side of the plugging drainage spool; the fourth interface of the plugging drainage spool is set as a low-temperature water injection port; the sealing end is provided with a through hole that can be sealed through by a drill rod or a grouting pipe; The pipe-penetrating sealing valve comprises: Pipe sealing valve body; A double-opening gate, which is arranged in the cavity of the pipe-penetrating sealing valve body, and a hollow portion is provided at the center of the double-opening gate, and the size of the hollow portion is set corresponding to the drill rod or the grouting pipe; Two sealing sleeves, the two sealing sleeves are symmetrically arranged on the upper and lower sides of the hollow portion; The method of using the high-temperature water diversion blowout preventer includes the following steps: S1. Installation of the blowout preventer: pre-excavate in advance, place the orifice pipe, and install the water inlet valve, pipe penetration sealing valve, plugging and drainage spool, sealing end, high-temperature water drainage valve, and high-temperature water drainage pipe in sequence. Pass the drill pipe through the sealing end, plugging and drainage spool, pipe penetration sealing valve, and water inlet valve to the outside of the water inlet valve. S2, drilling and excavation, through the drill pipe excavation, the high-temperature water and rock debris produced by rock breaking enter the blowout preventer; S3, cooling down, by injecting low-temperature water into the low-temperature water injection port of the blocked drainage four-way to neutralize and cool the high-temperature water and cool the drill pipe; and controlling the low-temperature water injection volume and the overall blowout preventer temperature through the controller; S4, with rod sealing. After the grouting drilling is completed, the drill rod is withdrawn to the pipe sealing valve, the water inlet valve is closed, the sealing end is opened, the drill rod is completely withdrawn, and the grouting pipe is replaced and the sealing end is closed to carry out grouting. When the parts of the blowout preventer need to be replaced, the pipe sealing valve is closed to seal the pipe sealing valve and the grouting pipe, and the parts that need to be replaced are replaced. S5. Drainage utilization: the treated water and rock chips flow out through the high-temperature water drainage valve and high-temperature water drainage pipe and are used for slurry mixing and concrete preparation.

2. The high-temperature water diversion and blowout prevention device according to claim 1, characterized in that: A flow sensor and a temperature sensor are provided on the pipe of the low-temperature water injection port and the outlet pipe of the high-temperature water drainage pipe. The flow sensor is used to monitor the flow rate of the low-temperature water injection volume and the outflow volume of the high-temperature water drainage pipe, and the temperature sensor is used to monitor the temperature of the water in the pipe of the low-temperature water injection port and the temperature of the water in the high-temperature water drainage pipe.

3. The high-temperature water diversion and blowout prevention device according to claim 1, characterized in that: The water inlet valve comprises: Water inlet valve body; A first driving mechanism, the driving mechanism is located on the upper side of the water inlet valve body; a gate plate, the gate plate is arranged on the inner side of the water inlet valve body, and the first driving mechanism drives the gate plate to move up and down through the first valve stem to adjust the size of the water inlet valve opening.

4. The high-temperature water diversion and blowout prevention device according to claim 1, characterized in that: The pipe-penetrating sealing valve comprises: A pipe-penetrating sealing valve body, wherein the two ends of the pipe-penetrating sealing valve body are respectively provided with a water inlet and a water outlet; Two second driving mechanisms, the second driving mechanisms being respectively located on the upper and lower sides of the pipe-penetrating sealing valve body; The double-opening gate is arranged in the cavity of the pipe-penetrating sealing valve body, and the second driving mechanism drives the double-opening gate to move up and down through the second valve stem to adjust the opening size of the pipe-penetrating sealing valve.

5. The high-temperature water diversion and blowout prevention device according to claim 1, characterized in that: The connection between the second interface and the third interface of the blocking and drainage cross-connection is provided with a flared opening.

6. The high-temperature water diversion and blowout prevention device according to claim 1, characterized in that: A floating sealing end cover is provided on the side of the sealing end head close to the blocking and drainage four-way, a sealing groove is provided on the side of the sealing end head close to the floating sealing end cover, a floating sealing gasket is provided at the sealing groove, a wear-resistant ring and multiple sealing rings arranged at intervals are provided in the through hole of the sealing end head, and the wear-resistant ring is located on the side of the sealing ring away from the sealing groove.

7. The high-temperature water diversion and blowout prevention device according to claim 6, characterized in that: The sealing ring is a perfluoroether O-type sealing ring.

8. The high-temperature water diversion and blowout prevention device according to claim 1, characterized in that: A filter is provided in the high-temperature water drainage pipe.

9. The high-temperature water diversion and blowout prevention device according to claim 1, characterized in that: The drill rod comprises: a drill rod body; a drill bit connected to one end of the drill rod body; and a one-way valve connected to the other end of the drill rod body.

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