Drilling hydraulic oil way system, valve block and drilling system

Abstract

The invention discloses a drilling hydraulic oil way system, a valve block and a drilling system, and relates to the technical field of drilling, the technical scheme is that the oil inlet end of a first oil way is communicated with an auxiliary pump, and the oil outlet end of the first oil way is communicated with a constant-speed feed valve and a clamping device; the oil inlet end of the second oil way is communicated with the main pump, and the oil outlet end is communicated with a power head driving passage of the drilling machine; the oil inlet end of the fourth oil way is communicated with the main pump, and the oil outlet end is communicated with the stirrer passage; the oil inlet end of the fifth oil way is communicated with the main pump, and the oil outlet end is communicated with the slurry pump passage; and the sixth oil way is arranged among the power head driving passage of the drilling machine, the fourth oil way and the fifth oil way. The hydraulic oil way system has the beneficial effects that the hydraulic oil way system in the scheme can be matched with a motor and a diesel engine, and has wide applicability. The cost of the drilling machine system correspondingly formed by the scheme is lower than that of a traditional diesel power drilling machine. According to the scheme, redundant hydraulic oil of the stirrer and the slurry pump is injected into the hydraulic motor of the drilling machine, and the torque and driving force of the motor are increased.

Description

Technical Field

[0001] The invention relates to the technical field of drilling, in particular to a drilling hydraulic oil circuit system, a valve block and a drilling system. Background Art

[0002] Most drilling rigs are configured with a diesel engine as the power output. The advantages of a single engine are simple structure and low cost, but the uncertainty of its use is relatively high. Once the engine fails, it has to be shut down for maintenance, which increases the instability of drilling operations. In addition, the output power of a single engine is also limited. At present, there are also diesel drilling rigs with two or three diesel engines in parallel in the drilling rig industry. Although this is a slight improvement over the above situation, it still has shortcomings.

[0003] In addition, there are several problems with drilling rigs powered by diesel engines.

[0004] 1. If the working environment is a "tunnel", considering the poor air circulation in the tunnel, it is strictly forbidden to use diesel engines during construction in the tunnel to avoid polluting the air environment in the tunnel.

[0005] 2. The cost of diesel engines is relatively high. Taking Kubota's portable diesel engine, which is currently the most commonly used in the drilling rig industry, as an example, the purchase price of just one Kubota V1505T diesel engine is more than 30,000 yuan.

[0006] 3. As a power source, the output power of the diesel engine is difficult to adjust and control. Summary of the invention

[0007] In view of one of the deficiencies of the prior art, the present invention provides a drilling hydraulic oil circuit system, a valve block and a drilling system to solve the problem of using a diesel engine as a drilling power.

[0008] To achieve the above object, the present invention provides the following technical solution: a drilling hydraulic oil circuit system, comprising a main pump and an auxiliary pump, wherein the main pump and the auxiliary pump are connected to a clamp, a constant speed feed valve, a drilling rig, an agitator and a mud pump through a pipeline group, characterized in that it comprises:

[0009] a first oil circuit, the oil inlet end of which is connected to the auxiliary pump, and the oil outlet end of which is connected to the constant speed feed valve and the clamp;

[0010] A second oil circuit, the oil inlet end of which is connected to the main pump, and the oil outlet end of which is connected to the driving passage of the power head of the drilling rig;

[0011] A fourth oil circuit, the oil inlet end of which is connected to the main pump, and the oil outlet end of which is connected to the agitator passage, for driving the agitator to work;

[0012] A fifth oil circuit, the oil inlet end of which is connected to the main pump, and the oil outlet end of which is connected to the mud pump passage, for driving the mud pump to work;

[0013] The sixth oil circuit is arranged between the power head driving passage of the drilling rig and the fourth oil circuit and the fifth oil circuit.

[0014] Preferably, the first oil circuit includes:

[0015] A first main oil circuit, one end of which is provided with an auxiliary pump oil inlet and the other end of which is connected to a constant speed feed valve;

[0016] Valve A is arranged on the first main oil circuit, and valve A is a pressure-operated balanced piston valve; the first output passage of valve A is connected to the constant speed feed valve, and the second output passage is connected to the oil return port;

[0017] The one-way valve A is arranged on the first main oil circuit, and the one-way valve A is arranged on the passage between the auxiliary pump oil inlet and the valve A.

[0018] Preferably, the first oil circuit further includes:

[0019] A first branch, one end of which is connected to the pipeline between the valve A and the one-way valve A, and the other end of which is connected to the drive passage and the oil return port of the clamp;

[0020] A second branch, one end of which is connected to the pipeline between the auxiliary pump oil inlet and the one-way valve A, and the other end of which is connected to the oil return port;

[0021] Valve B is arranged on the second branch and is a direct-acting relief valve.

[0022] Preferably, the second oil circuit includes:

[0023] The second main oil circuit has a main pump oil inlet A at one end and is connected to a driving passage of the power head of the drilling rig at the other end;

[0024] A one-way valve B, arranged on the second main oil circuit;

[0025] The second main oil circuit is connected to the sixth oil circuit, and the connecting point of the sixth oil circuit and the second main oil circuit is located on the pipeline between the oil outlet end of the one-way valve B and the drilling rig.

[0026] Preferably, it also includes:

[0027] The third oil circuit, the oil inlet end of which is connected to the main pump, and the oil outlet end of which is connected to the driving passage of the power head of the drilling rig; the third oil circuit includes:

[0028] The third main oil circuit has a main pump oil inlet B at one end and is connected to the driving passage of the power head of the drilling rig at the other end;

[0029] A one-way valve C, arranged on the third main oil circuit;

[0030] The third main oil circuit is connected to the sixth oil circuit, and the connecting point of the sixth oil circuit and the third main oil circuit is located on the pipeline between the oil outlet end of the one-way valve C and the drilling rig.

[0031] Preferably, the fourth oil circuit includes:

[0032] The fourth main oil circuit has a main pump oil inlet C at one end and a drive passage connected to the agitator at the other end;

[0033] A valve C is arranged on the fourth main oil circuit, and the valve C is a direct-acting directional valve;

[0034] A one-way valve D is arranged on the fourth main oil circuit, and the one-way valve D is arranged between the valve C and the agitator;

[0035] The fourth main oil circuit is connected to the sixth oil circuit, and the connecting point between the sixth oil circuit and the fourth main oil circuit is located on the pipeline between the oil outlet end of the one-way valve D and the agitator.

[0036] Preferably, the fifth oil circuit includes:

[0037] The fifth main oil circuit has a main pump oil inlet D at one end and is connected to a driving passage of the mud pump at the other end;

[0038] A valve D is arranged on the fifth main oil circuit, and the valve D is a direct-acting directional valve;

[0039] A one-way valve E is arranged on the fifth main oil circuit, and the one-way valve E is arranged between the valve D and the mud pump;

[0040] The fifth main oil circuit is connected to the sixth oil circuit, and the connecting point between the sixth oil circuit and the fifth main oil circuit is located on the pipeline between the oil outlet end of the one-way valve E and the mud pump.

[0041] Preferably, the fourth oil circuit further includes:

[0042] The third branch can connect the main pump oil inlet C and the drilling rig power head delay drive passage;

[0043] The fifth oil circuit also includes:

[0044] The fourth branch can connect the main pump oil inlet D and the delayed drive passage of the power head of the drilling rig.

[0045] A valve block, applied to the aforementioned drilling hydraulic oil circuit system, comprises:

[0046] The valve body is a block having a connection hole group formed thereon, through which the valve body can be connected to the pipeline; the connection hole group includes:

[0047] An oil inlet group, including a plurality of oil inlets, the oil inlets corresponding to the oil inlet passages of the drilling hydraulic oil circuit system;

[0048] An oil outlet group, including a plurality of oil outlets, the oil outlets corresponding to the oil outlet passages of the drilling hydraulic oil circuit system;

[0049] A valve socket group, including a plurality of valve sockets, the valve sockets and the valve arrangement of the drilling hydraulic oil circuit system;

[0050] The first oil circuit, the second oil circuit, the third oil circuit, the fourth oil circuit, the fifth oil circuit and the sixth oil circuit are all provided with corresponding oil passages in the valve body.

[0051] A drilling system, using the aforementioned drilling hydraulic oil circuit system, comprises:

[0052] The drilling rig platform is the basic supporting structure; the main pump, auxiliary pump, clamp, constant speed feed valve, drilling rig, agitator and mud pump are all arranged on the drilling rig platform;

[0053] A mud pool, arranged on the drilling rig platform;

[0054] A clean water tank is erected above the mud pool, with the water outlet of the clean water tank facing the inside of the mud pool;

[0055] A winch, arranged on the drilling rig platform;

[0056] The motor group includes a double-pump motor and three single-pump motors.

[0057] Compared with the prior art, it has the following beneficial effects:

[0058] 1. The hydraulic oil circuit system of this solution is adaptable to both electric motors and diesel engines and has a wide range of applicability.

[0059] 2. The drilling rig system corresponding to this solution has a lower cost than traditional diesel-powered drilling rigs.

[0060] 3. This solution allows the excess hydraulic oil of the agitator and mud pump to be injected into the hydraulic motor of the drilling rig through the setting of the oil circuit, thereby increasing the torque and driving force of the motor.

[0061] 4. This solution delivers the excess hydraulic oil from the agitator and mud pump to the drilling rig for use, which saves more energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 This is a schematic diagram of the hydraulic oil circuit principle of an embodiment of the present application;

[0063] Figure 2 This is a front isometric view of a valve block according to an embodiment of the present application;

[0064] Figure 3 This is a rear isometric view of a valve block according to an embodiment of the present application;

[0065] Figure 4 This is an isometric view of a drilling system according to an embodiment of the present application;

[0066] Figure 5 A top view of a drilling system according to an embodiment of the present application;

[0067] Figure 6 This is a left view of the drilling system according to an embodiment of the present application.

[0068] In the figure:

[0069] 1. First oil circuit; 101. First branch; 102. Second branch; 103. Valve A; 104. Check valve A; 105. Valve B; 106. Fifth branch; 107. Valve E; 2. Second oil circuit; 201. Check valve B; 3. Third oil circuit; 301. Check valve C; 4. Fourth oil circuit; 401. Valve C; 402. Check valve D; 403. Third branch; 5. Fifth oil circuit; 501. Valve D; 502. Check valve E; 503. Fourth branch; 6. Sixth oil circuit;

[0070] 7. Valve body; 711. Oil inlet one; 712. Oil inlet two; 713. Oil inlet three; 714. Oil inlet four; 715. Oil inlet five.

[0071] 11. Auxiliary pump oil inlet; 12. Main pump oil inlet A; 13. Main pump oil inlet B; 14. Main pump oil inlet C; 15. Main pump oil inlet D;

[0072] 20. Drilling machine platform; 21. Clamp; 22. Constant speed feed valve; 23. Drilling machine; 24. Agitator; 25. Mud pump; 26. Power head delay drive passage; 27. Oil return port; 28. Mud pool; 29. ​​Clean water pool; 30. Winch; 31. Operating table; 32. Hydraulic oil tank; 33. Diesel tank; 34. Motor group; 341. Double pump motor; 342. Single pump motor; DETAILED DESCRIPTION

[0073] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0074] See also Figure 1 , this application provides the following technical solutions:

[0075] A drilling hydraulic oil circuit system includes a main pump and an auxiliary pump. The main pump and the auxiliary pump are connected to a clamp 21, a constant speed feed valve 22, a drilling rig 23, an agitator 24 and a mud pump 25 through a pipeline group. Several oil circuits are set between the main pump and the auxiliary pump and the above equipment. The constant speed feed valve 22 is also called "maintaining feed" in drilling technology. The oil circuit is set as follows:

[0076] A first oil circuit 1 is set corresponding to the constant speed feed valve 22 and the clamp 21. The oil inlet end of the oil circuit is connected to the auxiliary pump, and the oil outlet end is connected to the constant speed feed valve 22 and the clamp 21. The first oil circuit 1 is used for the auxiliary pump to supply oil to the constant speed feed valve 22 and the clamp 21.

[0077] The second oil circuit 2 and the third oil circuit 3 are connected to the driving passage of the power head of the drilling rig 23, and the second oil circuit 2 and the third oil circuit 3 form a connecting passage between the drilling rig 23 and the main pump; the second oil circuit 2 and the third oil circuit 3 form a parallel oil supply pipeline relative to the drilling rig 23. Because the oil supply required by the drilling rig 23 is large, two oil supply circuits are set for it.

[0078] A fourth oil circuit 4 is provided corresponding to the agitator 24 . The fourth oil circuit 4 forms a communication passage between the agitator 24 and the main pump. The fourth oil circuit 4 is used to drive the agitator 24 to work.

[0079] A fifth oil circuit 5 is provided corresponding to the mud pump 25 . The fifth oil circuit 5 forms a communication passage between the mud pump 25 and the main pump. The fifth oil circuit 5 is used to drive the mud pump 25 to work.

[0080] In addition, a sixth oil circuit 6 is provided, which is provided between the power head driving passage of the drilling machine 23 and the fourth oil circuit 4 and the fifth oil circuit 5. The sixth oil circuit 6 can communicate with the fourth oil circuit 4 and the fifth oil circuit 5 and the power head driving passage of the drilling machine 23.

[0081] The first oil circuit 1 is responsible for the auxiliary pump to supply oil to the clamp 21 and the constant speed feed valve 22 during drilling. The main pump supplies oil to the power head of the drilling rig 23, that is, the hydraulic motor, through the second oil circuit 2 and the third oil circuit 3. The fourth oil circuit 4 and the fifth oil circuit 5 are used to supply oil to the agitator 24 and the mud pump 25, and can also supply oil to the drilling rig 23. This design scheme is mainly considered that the functions of the clamp 21 and the constant speed feed valve 22 as auxiliary systems should not affect the operation of the drilling rig 23, the agitator 24 and the mud pump 25 in the main system, so the clamp 21 and the constant speed feed valve 22 of the auxiliary system are separated from the oil supply circuits of the drilling rig 23, the agitator 24 and the mud pump 25 of the main system.

[0082] On the basis of the above implementation scheme, the first oil circuit includes the first main oil circuit, valve A103 and one-way valve A104. The auxiliary pump oil inlet 11 is provided at one end of the first main oil circuit, and the other end is connected to the constant speed feed valve 22; valve A103 is provided on the first main oil circuit, and valve A103 is a pressure-operated balanced piston valve; the first output passage of valve A103 is connected to the constant speed feed valve 22, and the second output passage is connected to the return oil port 27; one-way valve A104 is provided on the first main oil circuit, and one-way valve A104 is provided on the passage between the auxiliary pump oil inlet 11 and valve A31. The auxiliary pump oil inlet 11 is combined with valve A103 of the pressure-operated balanced piston valve to ensure that the constant speed feed valve 22 ensures that the drilling pressure is continuously and steplessly adjustable during drilling and the drilling pressure is stable at ±3KN.

[0083] A first branch 101 and a second branch 102 are also provided in the first oil circuit 1. One end of the first branch 101 is connected to the pipeline between the valve A31 and the check valve A104, and the other end is connected to the drive passage of the clamp 21 and the oil return port 27. One end of the second branch 102 is connected to the pipeline between the auxiliary pump oil inlet 11 and the check valve A104, and the other end is connected to the oil return port 27. A valve B105 is provided on the second branch 102, and the valve B105 is a direct-acting overflow valve.

[0084] The second oil circuit 2 includes a second main oil circuit and a one-way valve B201. One end of the second main oil circuit is provided with a main pump oil inlet A12, and the other end is connected to the power head drive passage of the drilling rig 23; the one-way valve B201 is arranged on the second main oil circuit. The second main oil circuit is connected to the sixth oil circuit 6, and the connection point between the sixth oil circuit 6 and the second main oil circuit is located on the pipeline between the oil outlet end of the one-way valve B201 and the drilling rig 23.

[0085] The third oil circuit 3 includes a third main oil circuit and a one-way valve C301. One end of the third main oil circuit is provided with a main pump oil inlet B13, and the other end is connected to the power head drive passage of the drilling rig 23; the one-way valve C301 is arranged on the third main oil circuit. The third main oil circuit is connected to the sixth oil circuit 6, and the connection point between the sixth oil circuit 6 and the third main oil circuit is located on the pipeline between the oil outlet end of the one-way valve C301 and the drilling rig 23.

[0086] The fourth oil circuit 4 includes a fourth main oil circuit, a valve C401 and a one-way valve D402. One end of the fourth main oil circuit is provided with a main pump oil inlet C14, and the other end is connected to the drive passage of the agitator 24; the valve C401 is provided on the fourth main oil circuit, and the valve C401 is a direct-acting directional valve. The one-way valve D402 is provided on the fourth main oil circuit, and the one-way valve D402 is provided between the valve C401 and the agitator 24. The fourth main oil circuit is connected to the sixth oil circuit 6, and the connection point between the sixth oil circuit 6 and the fourth main oil circuit is located on the pipeline between the oil outlet end of the one-way valve D402 and the agitator 24.

[0087] The fifth oil circuit 4 includes the fifth main oil circuit, valve D501 and one-way valve E502. One end of the fifth main oil circuit is provided with the main pump oil inlet D15, and the other end is connected to the driving passage of the mud pump 25. Valve D501 is provided on the fifth main oil circuit, and valve D501 is a direct-acting directional valve. One-way valve E502 is provided on the fifth main oil circuit, and one-way valve E502 is provided between valve D501 and mud pump 25. The fifth main oil circuit is connected with the sixth oil circuit 6, and the connection point between the sixth oil circuit 6 and the fifth main oil circuit is located on the pipeline between the oil outlet end of the one-way valve E502 and the mud pump 25.

[0088] The oil circuit is equipped with five oil inlets, namely auxiliary pump oil inlet 11, main pump oil inlet A12, main pump oil inlet B13, main pump oil inlet C14 and main pump oil inlet D15. In order to meet the functional requirements, the auxiliary pump oil inlet 11 is provided with valve A103 of the pressure-operated balancing piston valve to ensure that the constant speed feed valve 22 ensures that the drilling pressure is continuously and steplessly adjustable and the drilling pressure is stable at ±3KN during drilling. The main pump oil inlet A12 and the main pump oil inlet B13 directly supply the hydraulic motor of the drilling rig 23 through their corresponding one-way valves B201 and C301, that is, provide power to the power head of the drilling rig 23. According to the functional requirements of the drilling rig, since the drilling rig 23 needs to start the agitator 24 and the mud pump 25 of the drilling rig at full speed first when starting, the main pump oil inlet C14 and the main pump oil inlet D15 of the fourth oil circuit 4 and the fifth oil circuit 5 are connected through their corresponding valves C401 and valve D501. These two direct-acting directional valves first start the agitator 24 and the mud pump 25 at full speed and supply oil to the agitator 24 and the mud pump 25 at full speed.

[0089] To avoid burning the drilling rig 23, 4 minutes after completing the full-speed start-up, the speed of the agitator 24 and the mud pump 25 will automatically turn to the speed set by the system. At this time, the oil supply to the agitator 24 and the mud pump 25 will automatically decrease, and the excess oil will automatically be injected into the sixth oil circuit 6.

[0090] See also Figure 1 , the system has the following advantages:

[0091] 1. To increase power, the excess hydraulic oil from the agitator 24 and the mud pump 25 is injected into the sixth oil circuit 6 and directly enters the power head driving hydraulic motor of the drilling rig 23, thereby increasing the torque and driving force of the hydraulic motor.

[0092] 2. Save energy. Inject this part of the excess hydraulic oil into the sixth oil circuit 6 to supply oil to the drilling rig 23, which can save power. Otherwise, this part of the oil will return to the oil tank through the overflow valve, thereby causing energy waste.

[0093] 3. Avoid heating of the hydraulic system. The heating of the equipment in the system will cause system instability. The hydraulic oil returning to the oil tank through the hydraulic system overflow valve will be seriously heated. As long as it is heated, it will cause instability to the hydraulic system. This solution avoids this problem to a large extent because the oil is delivered to the drilling rig 23.

[0094] On the basis of the above implementation scheme, the fourth oil circuit 4 also includes a third branch 403, which can connect the main pump oil inlet C14 and the power head delay drive passage 26 of the drilling rig 23. The fifth oil circuit 5 also includes a fourth branch 503, which can connect the main pump oil inlet D15 and the power head delay drive passage 26 of the drilling rig 23. The delay drive passage is set because it is considered that the coolant and lubricant have not yet entered the bottom of the borehole when the drilling rig 23 is just started, and the drill bit and the bottom of the hole are in a dry grinding state, which will cause the drill bit to burn, so the drill bit needs to be delayed to start, first let the water pump rotate at full speed, and then start the power head at full speed after the bottom of the hole is filled with coolant and lubricant.

[0095] On the basis of the above implementation scheme, pressure detection passages are respectively provided on the first oil circuit 1 and the sixth oil circuit 6, and pressure gauges are provided to detect the oil supply pressure of the auxiliary system corresponding to the auxiliary pump and the main system corresponding to the main pump.

[0096] The first oil circuit 1 also includes a fifth branch 106, which is connected to the first main oil circuit and the second main oil circuit respectively, and the connecting positions of the two are respectively located at the oil inlet side of the one-way valve A104 and the one-way valve B201; the fifth branch 106 forms two parallel passages, one of which is a pressure detection passage, and the other is connected to the clamp 21. A valve E107 is arranged on the passage connected to the clamp 21, and the valve E107 is a direct-acting directional valve. One oil outlet end of the valve E107 is connected to the clamp 21, and the other oil outlet end is connected to the sixth oil circuit 6. A one-way valve is arranged on the connecting pipeline between the valve E107 and the sixth oil circuit 6, and the oil delivery direction of the one-way valve is that the valve E107 can deliver oil to the sixth oil circuit 6.

[0097] Based on the above implementation scheme, see Figure 2 and Figure 3, this scheme also provides a valve block, which is used in correspondence with the aforementioned drilling hydraulic oil circuit system. The valve block of this scheme includes a valve body 7, which is a rectangular block, on which a connection hole group is opened, and the valve body can be connected to the pipeline through the connection hole group; the connection hole group includes an oil inlet group, an oil outlet group, a valve socket group and a process hole group. Among them, the oil inlet group includes a plurality of oil inlets, and the oil inlets correspond to the oil inlet passage setting of the drilling hydraulic oil circuit system. The oil outlet group includes a plurality of oil outlets, and the oil outlets correspond to the oil outlet passage setting of the drilling hydraulic oil circuit system. The valve socket group includes a plurality of valve sockets, and the valve sockets are set with the valves of the drilling hydraulic oil circuit system. The first oil circuit 1, the second oil circuit 2, the third oil circuit 3, the fourth oil circuit 4, the fifth oil circuit 5 and the sixth oil circuit 6 are all provided with oil passages corresponding to them in the valve body 7.

[0098] Specifically, the oil inlet group includes the following:

[0099] An oil inlet 711 corresponding to the auxiliary pump oil inlet 11;

[0100] The oil inlet 2 712 corresponding to the main pump oil inlet A12;

[0101] The oil inlet 3 713 corresponds to the main pump oil inlet B13;

[0102] Oil inlet port 4 714 corresponding to the main pump oil inlet port C14;

[0103] The oil inlet 5715 corresponds to the main pump oil inlet D15.

[0104] The oil outlet group includes the following:

[0105] Corresponding to the oil outlet 721 of the clamp 21;

[0106] Corresponding to the oil outlet 2 722 of the constant speed feed valve 22;

[0107] Corresponding to the oil outlet 3 723 of the drilling rig 23;

[0108] Corresponding to the oil outlet 4724 of the agitator 24;

[0109] Corresponding to the oil outlet 5725 of the mud pump 25;

[0110] The oil outlet 6 726 corresponding to the power head delay drive passage 26;

[0111] Corresponding to the oil outlet port 727 of the oil return port 27.

[0112] The oil outlets respectively form communication passages in the valve block according to the drilling hydraulic oil circuit system and the corresponding oil inlets.

[0113] In addition, the valve socket set includes:

[0114] The one-way valve socket group 731 is provided with a one-way valve socket corresponding to the one-way valve setting position in the drilling hydraulic oil circuit system, and the number of the one-way valve sockets is 6 in total.

[0115] The pressure measuring port group includes a main system pressure measuring port 732 and an auxiliary system pressure measuring port 733, which are arranged corresponding to the pressure detection passage in the drilling hydraulic oil circuit system.

[0116] A diverter valve socket 734 is provided corresponding to the oil inlet port 4 714 and the oil inlet port 5 715, respectively, for plugging in valve C401 and valve D501. A diverter valve socket 734 is also provided corresponding to the aforementioned valve 107.

[0117] A pressure-conducting valve socket 735 is provided corresponding to the oil inlet 1 711 for plugging the aforementioned valve A103. In addition, a pressure-relief valve socket 736 is also provided for plugging the valve B105.

[0118] By combining the valve block of the present invention with the drilling hydraulic oil circuit system and utilizing the setting of a one-way valve, it is possible to avoid the oil return problem in the hydraulic valve block when oil pumps driven by multiple motors are operated in parallel, thereby preventing the system from being disturbed.

[0119] Based on the above implementation scheme, see Figures 4 to 6 The present solution also provides a drilling system based on the aforementioned drilling hydraulic oil circuit system and valve block. The present drilling system is designed in a modular form, including a drilling rig 20 as a basic support structure, a main pump, an auxiliary pump, a clamp 21, a constant speed feed valve 22, a drilling rig 23, a stirrer 24 and a mud pump 25 are all arranged on the drilling rig 20. A mud pool 28 is arranged on the drilling rig 20. A clear water pool 29 is assumed to be above the mud pool 28, and the outlet of the clear water pool 29 faces the inside of the mud pool 28. A winch 30, an operating table 31, and a hydraulic oil tank 32 are also arranged on the drilling rig 20.

[0120] In addition, a modular motor group 34 is provided on the drilling rig 20, and the motor group 34 includes a double-pump motor 341 and three single-pump motors 342. The motors in the motor group 34 are connected in parallel as an oil supply structure. The four motors in total are all modular structures. If it is necessary to construct in a tunnel or on the surface with power facilities, the user can use the motor modules for drilling, which will reduce the construction cost by two-thirds. If it is a plateau construction without power facilities, the user only needs to remove the four motor modules, replace them with four V1505T engine modules, and put the diesel tank 33 in Figure 4 The quick-change plugs of the motor module and the engine module adopt the same structure setting, which is easy to replace.

[0121] The drilling system of multiple motors in parallel in this solution adopts a modular design. If a user needs to construct in a plateau area, but there is no electricity on the plateau, the user only needs to unplug the quick-connect connector of the motor module oil pipe, lift the motor module, replace it with the engine module, plug in the quick-connect connector of the engine module, and then put a diesel tank 33 on the platform to start the construction. Compared with the purchase price of a Kubota V1505T diesel engine, which is more than 30,000 yuan, the purchase price of a 30-kilowatt motor in this solution is less than 3,000 yuan. The price of an electric motor is only one-tenth of the price of an engine, which has a great price advantage. According to the drilling depth of different types of drilling rigs, you can choose three types of motors as prime movers: Y2-160L-4-B3515Kw, drilling depth of 400 meters, Y2-180M-4-B3518.5Kw, drilling depth of 600 meters, Y2-180L-4-B3522Kw, drilling depth of 800 meters, and Y2-200L-4-B3530Kw, drilling depth of 100 meters. The user can choose any of the three motors according to their drilling depth needs. The entire drilling system is designed in a modular manner, which is convenient for users to disassemble, install and move. Each electric motor is equipped with a frequency converter to achieve overload protection and stepless speed regulation for each motor.

[0122] The dual-pump motor 341 in the motor group 34 is a double pump, in which the rear pump is used to supply oil to the auxiliary system alone, that is, the auxiliary pump oil inlet 11 drives the constant speed feed valve 22 to supply oil through valve A103, and drives the clamp 21 to supply oil through valve E107. In addition, the oil pressure of the auxiliary circuit is controlled by valve B105.

[0123] The main pump oil inlet A12 and the main pump oil inlet B13 of the second oil circuit 2 and the third oil circuit 3 respectively pass through their corresponding one-way valves. At the beginning of starting, the constant speed feed valve 22 is kept unpressurized, and the hydraulic motor of the drilling rig 23 starts to run at a low speed to reserve kinetic energy for normal drilling. The main pump oil inlet C14 and the main pump oil inlet D15 of the fourth oil circuit 4 and the fifth oil circuit 5 respectively supply oil to the agitator 24 and the mud pump 25 at full speed through the direct-acting directional valve and the one-way valve, so that the agitator 24 and the mud pump 25 starts running at full speed. At this time, there is no mud in the orifice, so the constant speed feed valve 22 cannot be pressurized, and the power head of the drilling rig 23 cannot run at full speed, otherwise the drill bit will be burned. After 4 minutes, the direct-acting directional valve opens. At this time, the speed of the agitator and the mud pump returns to the set speed. The excess oil is supplied to the power head of the drilling rig 23 at full speed through the sixth oil circuit 6, and the constant speed feed valve 22 is started to pressurize and start drilling. The hydraulic oil is not wasted at all and all enters the drilling actuator.

[0124] In the description of the present application and its embodiments, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "height", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0125] In the present application and its embodiments, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0126] In the present application and its embodiments, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0127] The disclosure above provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0128] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0129] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A drilling hydraulic oil system, comprising a main pump and an auxiliary pump, wherein the main pump and the auxiliary pump are connected to a clamp, a constant speed feed valve, a drilling rig, an agitator and a mud pump through a pipeline group, characterized in that: include: a first oil circuit, the oil inlet end of which is connected to the auxiliary pump, and the oil outlet end of which is connected to the constant speed feed valve and the clamp; A second oil circuit, the oil inlet end of which is connected to the main pump, and the oil outlet end of which is connected to the driving passage of the power head of the drilling rig; A fourth oil circuit, the oil inlet end of which is connected to the main pump, and the oil outlet end of which is connected to the agitator passage, for driving the agitator to work; A fifth oil circuit, the oil inlet end of which is connected to the main pump, and the oil outlet end of which is connected to the mud pump passage, for driving the mud pump to work; The sixth oil circuit is arranged between the power head driving passage of the drilling rig and the fourth oil circuit and the fifth oil circuit.

2. The drilling hydraulic oil circuit system according to claim 1, characterized in that: The first oil circuit comprises: A first main oil circuit, one end of which is provided with an auxiliary pump oil inlet and the other end of which is connected to a constant speed feed valve; Valve A is arranged on the first main oil circuit, and valve A is a pressure-operated balanced piston valve; the first output passage of valve A is connected to the constant speed feed valve, and the second output passage is connected to the oil return port; The one-way valve A is arranged on the first main oil circuit, and the one-way valve A is arranged on the passage between the auxiliary pump oil inlet and the valve A.

3. The drilling hydraulic oil circuit system according to claim 2, characterized in that: The first oil circuit also includes: A first branch, one end of which is connected to the pipeline between the valve A and the one-way valve A, and the other end of which is connected to the drive passage and the oil return port of the clamp; A second branch, one end of which is connected to the pipeline between the auxiliary pump oil inlet and the one-way valve A, and the other end of which is connected to the oil return port; Valve B is arranged on the second branch and is a direct-acting relief valve.

4. The drilling hydraulic oil circuit system according to claim 3, characterized in that: The second oil circuit comprises: The second main oil circuit has a main pump oil inlet A at one end and is connected to a driving passage of the power head of the drilling rig at the other end; A one-way valve B, arranged on the second main oil circuit; The second main oil circuit is connected to the sixth oil circuit, and the connecting point of the sixth oil circuit and the second main oil circuit is located on the pipeline between the oil outlet end of the one-way valve B and the drilling rig.

5. The drilling hydraulic oil circuit system according to claim 4, characterized in that: Also includes: A third oil circuit, the oil inlet end of which is connected to the main pump, and the oil outlet end of which is connected to the driving passage of the power head of the drilling rig; The third oil circuit includes: The third main oil circuit has a main pump oil inlet B at one end and is connected to the driving passage of the power head of the drilling rig at the other end; A one-way valve C, arranged on the third main oil circuit; The third main oil circuit is connected to the sixth oil circuit, and the connecting point of the sixth oil circuit and the third main oil circuit is located on the pipeline between the oil outlet end of the one-way valve C and the drilling rig.

6. The drilling hydraulic oil circuit system according to claim 5, characterized in that: The fourth oil circuit comprises: The fourth main oil circuit has a main pump oil inlet C at one end and a drive passage connected to the agitator at the other end; A valve C is arranged on the fourth main oil circuit, and the valve C is a direct-acting directional valve; A one-way valve D is arranged on the fourth main oil circuit, and the one-way valve D is arranged between the valve C and the agitator; The fourth main oil circuit is connected to the sixth oil circuit, and the connecting point between the sixth oil circuit and the fourth main oil circuit is located on the pipeline between the oil outlet end of the one-way valve D and the agitator.

7. The drilling hydraulic oil circuit system according to claim 6, characterized in that: The fifth oil circuit comprises: The fifth main oil circuit has a main pump oil inlet D at one end and is connected to a driving passage of the mud pump at the other end; A valve D is arranged on the fifth main oil circuit, and the valve D is a direct-acting directional valve; A one-way valve E is arranged on the fifth main oil circuit, and the one-way valve E is arranged between the valve D and the mud pump; The fifth main oil circuit is connected to the sixth oil circuit, and the connecting point between the sixth oil circuit and the fifth main oil circuit is located on the pipeline between the oil outlet end of the one-way valve E and the mud pump.

8. The drilling hydraulic oil circuit system according to claim 7, characterized in that: The fourth oil circuit also includes: The third branch can connect the main pump oil inlet C and the drilling rig power head delay drive passage; The fifth oil circuit also includes: The fourth branch can connect the main pump oil inlet D and the delayed drive passage of the power head of the drilling rig.

9. A valve block, characterized in that: The drilling hydraulic oil circuit system applied to any one of claims 1 to 8 comprises: The valve body is a block having a connection hole group formed thereon, through which the valve body can be connected to the pipeline; the connection hole group includes: An oil inlet group, including a plurality of oil inlets, the oil inlets corresponding to the oil inlet passages of the drilling hydraulic oil circuit system; An oil outlet group, including a plurality of oil outlets, the oil outlets corresponding to the oil outlet passages of the drilling hydraulic oil circuit system; A valve socket group, including a plurality of valve sockets, the valve sockets and the valve arrangement of the drilling hydraulic oil circuit system; The first oil circuit, the second oil circuit, the third oil circuit, the fourth oil circuit, the fifth oil circuit and the sixth oil circuit are all provided with corresponding oil passages in the valve body.

10. A drilling system, characterized in that: The drilling hydraulic oil circuit system according to any one of claims 1 to 8 comprises: The drilling rig platform is the basic supporting structure; the main pump, auxiliary pump, clamp, constant speed feed valve, drilling rig, agitator and mud pump are all arranged on the drilling rig platform; A mud pool, arranged on the drilling rig platform; A clean water tank is erected above the mud pool, with the water outlet of the clean water tank facing the inside of the mud pool; A winch, arranged on the drilling rig platform; The motor group includes a double-pump motor and three single-pump motors.

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