CN112576228B - Fully-sealed balance pressure water nozzle - Google Patents
Fully-sealed balance pressure water nozzle Download PDFInfo
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- CN112576228B CN112576228B CN202011451301.8A CN202011451301A CN112576228B CN 112576228 B CN112576228 B CN 112576228B CN 202011451301 A CN202011451301 A CN 202011451301A CN 112576228 B CN112576228 B CN 112576228B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 134
- 230000007246 mechanism Effects 0.000 claims abstract description 55
- 239000011148 porous material Substances 0.000 claims abstract description 34
- 230000005669 field effect Effects 0.000 claims description 65
- 239000003921 oil Substances 0.000 claims description 62
- 230000005540 biological transmission Effects 0.000 claims description 56
- 239000010720 hydraulic oil Substances 0.000 claims description 30
- 239000012530 fluid Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 16
- 230000001681 protective effect Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 238000009991 scouring Methods 0.000 claims description 9
- 239000004576 sand Substances 0.000 abstract description 7
- 238000002347 injection Methods 0.000 abstract description 6
- 239000007924 injection Substances 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002332 oil field water Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/066—Valve arrangements for boreholes or wells in wells electrically actuated
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/03—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors
- H02P7/04—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors by means of a H-bridge circuit
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Power Engineering (AREA)
- Nozzles (AREA)
Abstract
In order to solve the problem of underground pressure balance, the invention provides a fully-sealed balanced pressure water nozzle which comprises a base body, an opening degree adjusting mechanism and a balanced pressure adjusting mechanism, wherein a central channel, a main overflowing channel, a water nozzle mounting pore channel and a balanced pressure cavity are respectively arranged in the base body along the axial direction, the central channel is respectively communicated with the water nozzle mounting pore channel, the main overflowing channel and the balanced pressure cavity, water outlet holes are radially arranged on the side wall of the base body and are communicated with the water nozzle mounting pore channel, the water nozzle mounting pore channel is communicated with the balanced pressure cavity through a first pressure guide hole, the end part of the balanced pressure cavity is sealed through a pressure guide plug, the opening degree adjusting mechanism is arranged in the water nozzle mounting pore channel, and the balanced pressure adjusting mechanism is arranged in the balanced pressure cavity. The invention can balance the underground pressure, has large flow area, can meet the requirement of large-volume water injection, is not easy to accumulate sand and block, and has high reliability.
Description
Technical Field
The invention belongs to the field of oilfield water injection, and particularly relates to a fully-sealed balanced pressure water nozzle.
Background
The water injection yield increase is a main means for increasing the yield of each large oil field at present, the intelligent water distributor starts to be applied to water injection wells of each large oil field in recent years, and integrates the functions of measurement and regulation, seal inspection, measurement and the like, so that the working efficiency is greatly improved, and the cost of manpower and material resources is saved.
The core component of the intelligent water distributor is an adjustable water nozzle, and in order to ensure that the resistance of the water nozzle is as small as possible during action, the water nozzle needs to be designed into a balanced pressure structure, so that the pressure difference force applied to the water nozzle in the underground is zero.
The existing balanced pressure water nozzle mainly comprises two structures, wherein one structure seals a transmission lead screw in an air cavity, and the other end of the water nozzle is specially provided with another air cavity for pressure balance, so that the water nozzle has a small overflowing section, cannot be used in a large-volume environment and is easy to accumulate sand and block; the other type is that the transmission lead screw is arranged in underground fluid, an air cavity is not needed to be arranged, but although the flow channel of the structure is enlarged, the lead screw is easy to cause sand blocking in the fluid environment for a long time, and the water nozzle is caused to lose efficacy.
Disclosure of Invention
In view of this, the main objective of the present invention is to provide a fully sealed balanced pressure water nozzle.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the embodiment of the invention provides a fully-sealed balanced pressure water nozzle, which comprises a base body, an opening degree adjusting mechanism and a balanced pressure adjusting mechanism, wherein a central channel, a main overflow channel, a water nozzle mounting pore channel and a balanced pressure cavity are respectively arranged in the base body along the axial direction, the 1 st path of the central channel is communicated with the water nozzle mounting pore channel, the 2 nd path of the central channel is communicated with the main overflow channel, the 3 rd path of the central channel is communicated with the balanced pressure cavity, the side wall of the base body is radially provided with a water outlet hole, the water outlet hole is communicated with the water nozzle mounting pore channel, the water nozzle mounting pore channel is communicated with the balanced pressure cavity through a first pressure guide hole, the end part of the balanced pressure cavity is sealed through a pressure guide plug, the opening degree adjusting mechanism is arranged in the water nozzle mounting pore channel and is used for changing the flow area of the water outlet hole according to the adjustment of the position and changing the size of a pressure value provided for the balanced pressure cavity according to the adjustment of the position, the balanced pressure adjusting mechanism is arranged in the balanced pressure cavity and used for balancing underground pressure.
In the above scheme, the aperture adjusting mechanism comprises a screw rod, a transmission sleeve, a support sleeve, a thrust bearing and a motor, wherein one end of the screw rod is connected with the transmission sleeve, the other end of the screw rod is connected with the motor, the support sleeve is arranged between the other end of the screw rod and the inner wall of a water nozzle mounting hole, the thrust bearing is arranged between the screw rod and the support sleeve, a hydraulic chamber for filling hydraulic oil is arranged in a cavity between the transmission sleeve and the support sleeve in the water nozzle mounting hole, and the hydraulic chamber is communicated with the balance pressure cavity through a first pressure guide hole.
In the scheme, one end of the transmission sleeve, which is close to the central channel, is provided with the anti-scouring body.
In the above scheme, the positions of two sides of the water outlet hole in the water nozzle mounting pore are respectively provided with the first sealing ring and the second sealing ring.
In the above scheme, still be provided with first anti-rotation body, second anti-rotation body on the inner wall in water injection well choke installation pore respectively, first anti-rotation body is used for preventing that the driving sleeve from rotating in the removal process, the second anti-rotation body is used for preventing that the supporting sleeve from rotating in the rotatory process of lead screw.
In the above scheme, the motor is connected with a motor control circuit for controlling forward and reverse rotation of the motor, the motor control circuit includes a motor H-bridge circuit, a first protection circuit, a second protection circuit, a feedback circuit, a forward rotation driving circuit, a reverse rotation driving circuit, a first diode D1, a second diode D2, a third diode D3, and a fourth diode D4, the motor H-bridge circuit is composed of a first field effect transistor Q1, a second field effect transistor Q2, a third field effect transistor Q3, and a fourth field effect transistor Q4, the first diode D1 and the third diode D3 are connected in series and then connected with the first field effect transistor Q1 at one end, and connected with the third field effect transistor Q3 at the other end, the second diode D2 and the fourth diode D4 are connected in series and then connected with the second field effect transistor Q2 at one end and connected with the fourth field effect transistor Q4 at the other end, and the two ends of the motor are respectively connected between the first field effect transistor Q1 and the third field effect transistor Q2, And between second field effect transistor Q2 and fourth field effect transistor Q4, parallelly connected feedback circuit on the motor, the both ends of feedback circuit connect first protection circuit, second protection circuit respectively, first protection circuit is connected with first field effect transistor Q1 and fourth field effect transistor Q4 respectively through corotation drive circuit, second protection circuit is connected with second field effect transistor Q2 and third field effect transistor Q3 respectively through reversal drive circuit.
In the above scheme, the forward rotation driving circuit and the reverse rotation driving circuit each include a microprocessor U1, a first triode Q5, a second triode Q6, a first resistor R1 to a tenth resistor R10, the microprocessor U1 is connected to a first protection circuit or a second protection circuit, the first protection circuit or the second protection circuit is grounded after passing through a seventh resistor R7 and an eighth resistor R8, a first end of the second triode Q6 is connected to the first fet Q1 or the second fet Q2 through a tenth resistor R10 and a ninth resistor R9, a second end is connected between the seventh resistor R7 and the eighth resistor R8, a third end is divided into two paths, the first path is connected to the fourth fet Q4 or the third fet Q3, the second path is connected between the eighth resistor R8 and the ground, the first resistor R1, the second triode R2, the first triode Q5, the third resistor R3, the fourth resistor R4 and the third end of the fourth triode Q6 which are connected in series in parallel, one end of the first triode Q5 is connected between a ninth resistor R9 and a tenth resistor R10, one end of the first field effect transistor Q1 or the second field effect transistor Q2 is connected between the first resistor R1 and the second resistor R2, and one end of the fourth field effect transistor Q4 or the third field effect transistor Q3 is connected between the third resistor R3 and the fourth resistor R4.
In the above scheme, the balance pressure adjusting mechanism comprises a piston, the piston is arranged in a balance pressure cavity in a sliding mode, a cavity between one end of the piston and the central channel is used for filling underground fluid, and a cavity between the other end of the piston and the pressure guide plug is communicated with the hydraulic bin through a first pressure guide hole and is used for filling hydraulic oil.
In the above scheme, balanced pressure guiding mechanism includes the oil bag, the oil bag sets up in balanced pressure chamber and with lead to press the end cap to be connected, the outside of oil bag and balanced pressure chamber, the cavity between the central passage are used for filling fluid in the pit, the oil bag inner chamber of oil bag is used for filling hydraulic oil through intercommunicating pore, first pressure hole and hydraulic pressure storehouse intercommunication.
In the above scheme, the balanced pressure adjusting mechanism includes an oil bag and a protective sleeve, the oil bag is sleeved outside the base body, the protective sleeve is sleeved outside the oil bag and has two ends connected with the base body, an oil bag inner cavity of the oil bag is communicated with the water nozzle mounting hole through the second pressure guide hole and is used for filling downhole fluid, an oil bag outer cavity between the outside of the oil bag and the protective sleeve is communicated with the balanced pressure cavity through the third pressure guide hole, the balanced pressure cavity is communicated with the hydraulic pressure bin through the first pressure guide hole, the oil bag outer cavity, the balanced pressure cavity and the hydraulic pressure bin of the oil bag are all used for filling hydraulic oil, and the central channel and the balanced pressure cavity are isolated.
Compared with the prior art, the invention can balance the underground pressure, has large flow area, can meet the requirement of large-volume water injection, is not easy to accumulate sand and block, and has high reliability.
Drawings
Fig. 1 is an axial structural schematic diagram of a fully sealed balanced pressure water nozzle according to embodiment 1 of the present invention.
Fig. 2 is a sectional view taken along line a-a in fig. 1.
Fig. 3 is a sectional view taken along line B-B in fig. 1.
Fig. 4 is an axial structural schematic diagram of a fully sealed balanced pressure water nozzle according to embodiment 2 of the present invention.
Fig. 5 is a sectional view taken along line a-a in fig. 4.
Fig. 6 is a sectional view taken along line B-B in fig. 4.
Fig. 7 is an axial structural schematic diagram of a fully sealed balanced pressure water nozzle according to embodiment 3 of the present invention.
Fig. 8 is a sectional view taken along line a-a in fig. 7.
Fig. 9 is a sectional view taken along line B-B in fig. 7.
Fig. 10 is a sectional view taken along line C-C in fig. 7.
Fig. 11 is a schematic block diagram of a motor control circuit in a fully sealed balanced pressure water nozzle according to an embodiment of the present invention.
Fig. 12 is a circuit diagram of a forward driving circuit in a fully sealed balanced pressure water nozzle according to an embodiment of the present invention.
In the figure, a substrate-1, an opening degree adjusting mechanism-2, a balance pressure adjusting mechanism-3, a central channel-11, a main flow channel-12, a water nozzle mounting pore channel-13, a balance pressure cavity-14, a water outlet-15, a first pressure guide hole-16, a second pressure guide hole-17, a third pressure guide hole-18, a screw rod-21, a transmission sleeve-22 and a support sleeve-23, the oil-saving hydraulic cylinder comprises a thrust bearing-24, a hydraulic chamber-25, a piston-31, an oil bag-32, a protective sleeve-33, a first sealing ring-131, a second sealing ring-132, a first anti-rotation body-133, a second anti-rotation body-134, a pressure guide plug-141, an anti-scouring body-221, an oil bag inner cavity-321, a communication hole-322 and an oil bag outer cavity-323.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides a fully-sealed balanced pressure water nozzle, which comprises a base body 1, an opening degree adjusting mechanism 2 and a balanced pressure adjusting mechanism 3, wherein a central channel 11, a main flow channel 12, a water nozzle mounting pore channel 13 and a balanced pressure cavity 14 are respectively arranged in the base body 1 along the axial direction, the 1 st path of the central channel 11 is communicated with the water nozzle mounting pore channel 12, the 2 nd path is communicated with the main flow channel 12, the 3 rd path is communicated with the balanced pressure cavity 14, a water outlet hole 15 is arranged on the side wall of the base body 1 along the radial direction, the water outlet hole 15 is communicated with the water nozzle mounting pore channel 12, the water nozzle mounting pore channel 13 is communicated with the balanced pressure cavity 14 through a first pressure guide hole 16, the end part of the balanced pressure cavity 14 is sealed through a pressure guide plug 141, the opening degree adjusting mechanism 2 is arranged in the water nozzle mounting pore channel 13, the opening degree adjusting mechanism 2 is used for changing the flow area of the water outlet hole 15 according to the position adjustment, and the magnitude of the pressure value provided for the balance pressure cavity 14 is changed according to the position adjustment, the balance pressure adjusting mechanism 3 is arranged in the balance pressure cavity 14, and the balance pressure adjusting mechanism 3 is used for balancing the underground pressure.
The underground fluid is injected downwards through the central channel 11, part of the fluid enters other underground equipment through the main flow passage 12, part of the fluid is injected into the water nozzle installation pore 13, part of the fluid enters the balance pressure cavity 14, the flow area of the water outlet hole 15 is adjusted through the opening adjusting mechanism 2, the opening adjusting mechanism 2 changes the pressure in the balance pressure cavity 14 in the adjusting process, so that the balance pressure adjusting mechanism 3 changes the position or the shape, the fluid pressure in the balance pressure cavity 14 and the pressure born by the opening adjusting mechanism 2 are balanced through the balance pressure adjusting mechanism 3, the pressure of the fluid pressure and the pressure born by the opening adjusting mechanism 2 are adjusted to be the same, and therefore the opening adjusting mechanism 2 cannot generate extra pressure difference in the position changing process, and finally, the opening adjusting process is smooth, the flow passage area is large, and the underground equipment can be used in an environment with large flow.
Example 1
The opening degree adjusting mechanism 2 comprises a screw rod 21, a transmission sleeve 22, a support sleeve 23, a thrust bearing 24 and a motor, one end of the screw rod 21 is connected with the transmission sleeve 22, the other end of the screw rod 21 is connected with the motor, the support sleeve 23 is arranged between the other end of the screw rod 21 and the inner wall of the water nozzle mounting hole 13, the thrust bearing 24 is arranged between the screw rod 21 and the support sleeve 23, a hydraulic chamber 25 for filling hydraulic oil is arranged in a cavity between the transmission sleeve 22 and the support sleeve 23 in the water nozzle mounting hole 13, and the hydraulic chamber 25 is communicated with the balanced pressure chamber 14 through a first pressure guide hole 16.
The left end of the screw rod 21 is provided with a transmission thread and is matched with a thread female buckle at the right end of the transmission sleeve 22, the right end of the screw rod 21 is provided with a thrust bearing 24, the thrust bearing 24 is propped against the inner side of the support sleeve 23 through a nut, and the support sleeve 23 and the nut are prevented from rotating through screws.
The threaded spindle 21 passes through a support sleeve 23, and the support sleeve 23 is screwed on the base body 1.
An anti-scouring body 221 is arranged at one end, close to the central channel 11, of the transmission sleeve 22, and the anti-scouring body 221 is fixed with the transmission sleeve 22 through screws.
And a first sealing ring 131 and a second sealing ring 132 are respectively arranged at the two sides of the water outlet hole 15 in the water nozzle mounting hole 13.
The inner wall of the water nozzle mounting hole 13 is further provided with a first rotation preventing body 133 and a second rotation preventing body 134 respectively, the first rotation preventing body 133 is used for preventing the transmission sleeve 22 from rotating in the moving process, the second rotation preventing body 134 is used for preventing the support sleeve 23 from rotating in the rotating process of the screw rod 21, namely the first rotation preventing body 133 and the second rotation preventing body 134 prevent the transmission sleeve 22 and the support sleeve 23 from being driven by the screw rod 21 to rotate together.
The balance pressure adjusting mechanism 3 comprises a piston 31, the piston 31 is arranged in a balance pressure cavity 14 in a sliding mode, a cavity between one end of the piston 31 and the central channel 11 is used for filling underground fluid, and a cavity between the other end of the piston 31 and the pressure guiding plug 141 is communicated with the hydraulic bin 25 through a first pressure guiding hole 16 and is used for filling hydraulic oil.
The right end of the transmission sleeve 22 is communicated with the balanced pressure cavity 14 through the first pressure guide hole 16, hydraulic oil is filled in the right end of the transmission sleeve 22 and the balanced pressure cavity 14, the piston 31 is installed at the left end of the balanced pressure cavity 14, and the pressure guide plug 141 is screwed at the right end. When the hydraulic oil-gas pressure-reducing valve is placed in a high-pressure environment, the right end of the transmission sleeve 22, hydraulic oil, two sides of the piston 31 and the pressure in the pipe are always in the same state.
The fully-sealed balanced water pressure nozzle is arranged in an intelligent water distributor, when the water nozzle needs to be opened or the opening degree needs to be increased, a control motor drives a screw rod 21 to rotate forward, a transmission sleeve 22 moves towards the right side, hydraulic oil in a hydraulic pressure bin 25 is injected into a balanced pressure cavity 14 through a first pressure guide hole 16, after the hydraulic oil in the balanced pressure cavity 14 is pressed, a piston 31 is pushed to move leftwards, and the position of the transmission sleeve 22 moving rightwards is determined according to the required opening degree.
When the water nozzle needs to be closed or the opening degree needs to be reduced, the control motor drives the screw rod 21 to rotate reversely, the transmission sleeve 22 moves towards the left side, hydraulic oil in the balance pressure cavity 14 is injected into the hydraulic bin 25 through the first pressure guide hole 16, and the piston 31 is driven to move towards the right.
In the process of moving the transmission sleeve 22 to the left side or the right side, the pressure born by the sections of all the moving parts is equal to the pressure in the pipe, no additional differential pressure is generated, and the transmission pair of the lead screw 21 is always in a hydraulic oil environment, so that the lubrication is good and sand accumulation and blockage are avoided.
Example 2
The embodiment 2 of the invention provides a fully-sealed balanced pressure water nozzle, as shown in fig. 4-6, the water nozzle comprises a base body 1, an opening degree adjusting mechanism 2 and a balanced pressure adjusting mechanism 3, wherein a central channel 11, a main overflow channel 12, a water nozzle mounting pore channel 13 and a balanced pressure cavity 14 are respectively arranged in the base body 1 along the axial direction, the 1 st path of the central channel 11 is communicated with the water nozzle mounting pore channel 12, the 2 nd path is communicated with the main overflow channel 12, the 3 rd path is communicated with the balanced pressure cavity 14, a water outlet hole 15 is arranged on the side wall of the base body 1 along the radial direction, the water outlet hole 15 is communicated with the water nozzle mounting pore channel 12, the water nozzle mounting pore channel 13 is communicated with the balanced pressure cavity 14 through a first pressure guide hole 16, the end part of the balanced pressure cavity 14 is sealed through a pressure guide plug 141, the opening degree adjusting mechanism 2 is arranged in the water nozzle mounting pore channel 13, the opening degree adjusting mechanism 2 is used for changing the flow area of the water outlet hole 15 according to the position adjustment, and the magnitude of the pressure value provided for the balance pressure cavity 14 is changed according to the position adjustment, the balance pressure adjusting mechanism 3 is arranged in the balance pressure cavity 14, and the balance pressure adjusting mechanism 3 is used for balancing the underground pressure.
The opening degree adjusting mechanism 2 comprises a screw rod 21, a transmission sleeve 22, a support sleeve 23, a thrust bearing 24 and a motor, one end of the screw rod 21 is connected with the transmission sleeve 22, the other end of the screw rod 21 is connected with the motor, the support sleeve 23 is arranged between the other end of the screw rod 21 and the inner wall of the water nozzle mounting hole 13, the thrust bearing 24 is arranged between the screw rod 21 and the support sleeve 23, a hydraulic chamber 25 for filling hydraulic oil is arranged in a cavity between the transmission sleeve 22 and the support sleeve 23 in the water nozzle mounting hole 13, and the hydraulic chamber 25 is communicated with the balanced pressure chamber 14 through a first pressure guide hole 16.
The left end of the screw rod 21 is provided with a transmission thread and is matched with a thread female buckle at the right end of the transmission sleeve 22, the right end of the screw rod 21 is provided with a thrust bearing 24, the thrust bearing 24 is propped against the inner side of the support sleeve 23 through a nut, and the support sleeve 23 and the nut are prevented from rotating through screws.
The threaded spindle 21 passes through a support sleeve 23, and the support sleeve 23 is screwed on the base body 1.
An anti-scouring body 221 is arranged at one end, close to the central channel 11, of the transmission sleeve 22, and the anti-scouring body 221 is fixed with the transmission sleeve 22 through screws.
And a first sealing ring 131 and a second sealing ring 132 are respectively arranged at the two sides of the water outlet hole 15 in the water nozzle mounting hole 13.
The inner wall of the water nozzle mounting hole 13 is further provided with a first rotation preventing body 133 and a second rotation preventing body 134 respectively, the first rotation preventing body 133 is used for preventing the transmission sleeve 22 from rotating in the moving process, the second rotation preventing body 134 is used for preventing the support sleeve 23 from rotating in the rotating process of the screw rod 21, namely the first rotation preventing body 133 and the second rotation preventing body 134 prevent the transmission sleeve 22 and the support sleeve 23 from being driven by the screw rod 21 to rotate together.
The balanced pressure adjusting mechanism 3 comprises an oil bag 32, the oil bag 32 is arranged in the balanced pressure cavity 14 and connected with a pressure guide plug 141, the cavity between the outside of the oil bag 32 and the balanced pressure cavity 14 and the central channel 11 is used for filling downhole fluid, and an oil bag inner cavity 321 of the oil bag 32 is communicated with the hydraulic pressure bin 25 through a communication hole 322 and a first pressure guide hole 16 and is used for filling hydraulic oil.
The pressure guide plug 141 and the oil bag 32 are connected together and installed in the base body 1. The hydraulic chamber 25 at the right end of the transmission sleeve 22 is communicated with the oil bag inner cavity 321 of the oil bag 32 through the communication hole 322 and the first pressure guide hole 16, and the hydraulic chamber 25 at the right end of the transmission sleeve 22 and the oil bag 32 are filled with hydraulic oil.
When the device is placed in a high-pressure environment, the hydraulic pressure bin 25, two sides of the oil bag 32 and the pressure in the pipe are always in the same state.
The fully-sealed balance water pressure nozzle is arranged in an intelligent water distributor, when the water nozzle needs to be opened or the opening degree needs to be increased, the motor is controlled to drive the screw rod 21 to rotate forwards, the transmission sleeve 22 moves towards the right side, hydraulic oil in the hydraulic bin 25 is injected into the oil bag 32 through the first pressure guide hole 16, and after the hydraulic oil in the oil bag 32 is pressurized, the oil bag 32 is expanded.
When the water nozzle needs to be closed or the opening degree needs to be reduced, the control motor drives the screw rod 21 to rotate reversely, the transmission sleeve 22 moves towards the left side, hydraulic oil in the oil bag 32 is injected into the hydraulic bin 25 through the first pressure guide hole 16, and the oil bags 3-16 contract.
In the process of moving the transmission sleeve 22 to the left side or the right side, the pressure born by the sections of all the moving parts is equal to the pressure in the pipe, no additional differential pressure is generated, and the transmission pair of the lead screw 21 is always in a hydraulic oil environment, so that the lubrication is good and sand accumulation and blockage are avoided.
Example 3
Embodiment 3 of the present invention provides a fully-sealed balanced pressure water nozzle, as shown in fig. 7-10, the water nozzle includes a base 1, an opening degree adjusting mechanism 2, and a balanced pressure adjusting mechanism 3, a central channel 11, a main flow channel 12, a water nozzle mounting hole 13, and a balanced pressure cavity 14 are respectively axially disposed in the base 1, a 1 st path of the central channel 11 is communicated with the water nozzle mounting hole 12, a 2 nd path is communicated with the main flow channel 12, a 3 rd path is communicated with the balanced pressure cavity 14, a water outlet 15 is radially disposed on a side wall of the base 1, the water outlet 15 is communicated with the water nozzle mounting hole 12, the water nozzle mounting hole 13 is communicated with the balanced pressure cavity 14 through a first pressure guide hole 16, an end portion of the balanced pressure cavity 14 is sealed by a pressure guide plug 141, the opening degree adjusting mechanism 2 is disposed in the water nozzle mounting hole 13, the opening degree adjusting mechanism 2 is configured to change a flow area of the water outlet 15 according to position adjustment, and the magnitude of the pressure value provided for the balance pressure cavity 14 is changed according to the position adjustment, the balance pressure adjusting mechanism 3 is arranged in the balance pressure cavity 14, and the balance pressure adjusting mechanism 3 is used for balancing the underground pressure.
The opening degree adjusting mechanism 2 comprises a screw rod 21, a transmission sleeve 22, a support sleeve 23, a thrust bearing 24 and a motor, one end of the screw rod 21 is connected with the transmission sleeve 22, the other end of the screw rod 21 is connected with the motor, the support sleeve 23 is arranged between the other end of the screw rod 21 and the inner wall of the water nozzle mounting hole 13, the thrust bearing 24 is arranged between the screw rod 21 and the support sleeve 23, a hydraulic chamber 25 for filling hydraulic oil is arranged in a cavity between the transmission sleeve 22 and the support sleeve 23 in the water nozzle mounting hole 13, and the hydraulic chamber 25 is communicated with the balanced pressure chamber 14 through a first pressure guide hole 16.
The left end of the screw rod 21 is provided with a transmission thread and is matched with a thread female buckle at the right end of the transmission sleeve 22, the right end of the screw rod 21 is provided with a thrust bearing 24, the thrust bearing 24 is propped against the inner side of the support sleeve 23 through a nut, and the support sleeve 23 and the nut are prevented from rotating through screws.
The threaded spindle 21 passes through a support sleeve 23, and the support sleeve 23 is screwed on the base body 1.
An anti-scouring body 221 is arranged at one end, close to the central channel 11, of the transmission sleeve 22, and the anti-scouring body 221 is fixed with the transmission sleeve 22 through screws.
And a first sealing ring 131 and a second sealing ring 132 are respectively arranged at the two sides of the water outlet hole 15 in the water nozzle mounting hole 13.
The inner wall of the water nozzle mounting hole 13 is further provided with a first rotation preventing body 133 and a second rotation preventing body 134 respectively, the first rotation preventing body 133 is used for preventing the transmission sleeve 22 from rotating in the moving process, the second rotation preventing body 134 is used for preventing the support sleeve 23 from rotating in the rotating process of the screw rod 21, namely the first rotation preventing body 133 and the second rotation preventing body 134 prevent the transmission sleeve 22 and the support sleeve 23 from being driven by the screw rod 21 to rotate together.
The balance pressure adjusting mechanism 3 comprises an oil bag 32 and a protective sleeve 33, the oil bag 32 is sleeved outside the base body 1, the protective sleeve 33 is sleeved outside the oil bag 32, two ends of the protective sleeve 33 are connected with the base body 1, an oil bag inner cavity 321 of the oil bag 32 is communicated with a water nozzle mounting pore passage 13 through a second pressure guide hole 17 and used for filling underground fluid, an oil bag outer cavity 323 between the outside of the oil bag 32 and the protective sleeve 33 is communicated with a balance pressure cavity 14 through a third pressure guide hole 18, the balance pressure cavity 14 is communicated with a hydraulic bin 25 through a first pressure guide hole 16, the oil bag outer cavity 323, the balance pressure cavity 14 and the hydraulic bin 25 of the oil bag 32 are all used for filling hydraulic oil, and the central channel 11 is separated from the balance pressure cavity 14.
The second pressure guide hole 17 communicates the pressure in the pipe with the inner cavity 321 of the oil bag, and the hydraulic pressure chamber 25, the balance pressure chamber 14 and the outer cavity 323 of the oil bag are filled with hydraulic oil.
When the device is placed in a high-pressure environment, the pressures of the hydraulic bin 25, the hydraulic oil and the inner side and the outer side of the oil bag 32 are always equal to the pressure in the pipe.
When the water nozzle needs to be opened or the opening degree needs to be increased, the motor is controlled to drive the screw rod 21 to rotate forwards, the transmission sleeve 22 moves towards the right side, hydraulic oil in the hydraulic bin 25 is injected into the balanced pressure cavity 14 through the first pressure guide hole 16, hydraulic oil in the balanced pressure cavity 14 is injected into the oil bag outer cavity 323 of the oil bag 32 through the third pressure guide hole 18, and meanwhile, downhole fluid is injected into the oil bag inner cavity 321 through the second pressure guide hole 17, so that the side wall of the oil bag 32 deforms inwards.
When the water nozzle needs to be closed or the opening degree needs to be reduced, the control motor drives the screw rod 21 to rotate reversely, the transmission sleeve 22 moves towards the left side, hydraulic oil is injected into the balanced pressure cavity 14 from the oil bag outer cavity 323 through the third pressure guide hole 18, the hydraulic oil in the balanced pressure cavity 14 is injected into the hydraulic bin 25 through the first pressure guide hole 16, meanwhile, downhole fluid is injected into the oil bag inner cavity 321 through the second pressure guide hole 17, and therefore the side wall of the oil bag 32 deforms outwards.
In the process of moving the transmission sleeve 22 to the left side or the right side, the pressure born by the cross sections of all the moving parts is equal to the pressure in the pipe, no additional differential pressure is generated, and the transmission pair of the lead screw 21 is always in a hydraulic oil environment, so that the lubrication is good and sand accumulation and blockage are avoided.
In any of embodiments 1 to 3, as shown in fig. 11, the motor control circuit includes a motor H-bridge circuit, a first protection circuit, a second protection circuit, a feedback circuit, a forward rotation driving circuit, a reverse rotation driving circuit, a first diode D1, a second diode D2, a third diode D3, and a fourth diode D4, the motor H-bridge circuit is composed of a first fet Q1, a second fet Q2, a third fet Q3, and a fourth fet Q4, the first diode D1 and the third diode D3 are connected in series and then connected to the first fet Q1 at one end, and connected to the third fet Q3 at the other end, the second diode D2 and the fourth diode D4 are connected in series and then connected to the second fet Q2 at one end, and connected to the fourth fet Q4 at the other end, and the two ends of the motor are respectively connected between the first fet Q1 and the third fet Q3 at the other end, and the third fet Q4 at the other end, and the motor H, And between second field effect transistor Q2 and fourth field effect transistor Q4, parallelly connected feedback circuit on the motor, feedback circuit's both ends connect first protection circuit, second protection circuit respectively, first protection circuit is connected with first field effect transistor Q1 and fourth field effect transistor Q4 respectively through corotation drive circuit, the second protection circuit is connected with second field effect transistor Q2 and third field effect transistor Q3 respectively through reversal drive circuit.
The forward rotation driving circuit sends forward rotation logic control signals to the first protection circuit, and the first protection circuit controls the first field effect transistor Q1 and the fourth field effect transistor Q4 to be opened according to the forward rotation logic control signals, so that forward rotation of the motor is achieved.
The reverse driving circuit respectively sends reverse logic control signals to the second protection circuit, and the second protection circuit controls the second field effect transistor Q2 and the third field effect transistor Q3 to be opened according to the reverse logic control signals, so that the reverse rotation of the motor is realized.
When the first field effect transistor Q1 and the fourth field effect transistor Q4 are turned on, and the second field effect transistor Q2 and the third field effect transistor Q3 are turned off, the current of the motor flows in the direction of (r) in fig. 11; when the second fet Q2 and the third fet Q3 are turned on and the first fet Q1 and the fourth fet Q4 are turned off, the current of the motor flows as indicated by the direction of (c) in fig. 11.
The forward and reverse rotation of the motor, namely the switching of the water nozzle, is realized by controlling the opening and closing of the first field effect tube Q1-the fourth field effect tube Q4.
The feedback circuit is used for testing the working voltage, the current and the number of turns of the motor rotation, and feeding back to the protection circuit in time.
As shown in fig. 12, the forward driving circuit includes a microprocessor U1, a first triode Q5, a second triode Q6, a first resistor R1 to a tenth resistor R10, the microprocessor U1 is connected with a first protection circuit, the first protection circuit is grounded through a seventh resistor R7 and an eighth resistor R8, a first end of the second triode Q6 is connected with a first fet Q1 through a tenth resistor R10 and a ninth resistor R9, a second end is connected between the seventh resistor R7 and an eighth resistor R8, a third end is divided into two paths, the first path is connected with a fourth fet Q4, the second path is connected between the eighth resistor R8 and the ground, the first resistor R1, the second resistor R2, the first triode Q5, the third resistor R3 and the fourth resistor R4 which are connected in series in parallel between a first end and a third end of the second triode Q6, the first resistor R6867 is connected between a ninth resistor R87458 and the ninth resistor R3687458, one end of the first field effect transistor Q1 is connected between the first resistor R1 and the second resistor R2, and one end of the fourth field effect transistor Q4 is connected between the third resistor R3 and the fourth resistor R4.
The inversion driving circuit also comprises a microprocessor U1, a first triode Q5, a second triode Q6, a first resistor R1 to a tenth resistor R10, the microprocessor U1 is connected with a second protection circuit, the second protection circuit is grounded after passing through a seventh resistor R7 and an eighth resistor R8, a first end of the second triode Q6 is connected with a second field effect transistor Q2 through a tenth resistor R10 and a ninth resistor R9, a second end is connected between the seventh resistor R7 and an eighth resistor R8, a third end is divided into two paths, the first path is connected with the third field effect transistor Q3, the second path is connected between the eighth resistor R8 and the ground, the first resistor R8, the second resistor R8, the first triode Q8, the third resistor R8 and the fourth resistor R8 which are connected in series in sequence are connected in parallel between a first end and a third end of the second triode Q8, one end of the first resistor Q8 is connected between the ninth resistor R8 and the tenth resistor R8, and one end of the second resistor R8, one end of the third field effect transistor Q3 is connected between the third resistor R3 and the fourth resistor R4.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (6)
1. A fully-sealed balanced pressure water nozzle is characterized by comprising a base body, an opening degree adjusting mechanism and a balanced pressure adjusting mechanism, wherein a central channel, a main overflowing channel, a water nozzle mounting pore channel and a balanced pressure cavity are respectively arranged in the base body along the axial direction, the 1 st path of the central channel is communicated with the water nozzle mounting pore channel, the 2 nd path of the central channel is communicated with the main overflowing channel, the 3 rd path of the central channel is communicated with the balanced pressure cavity, water outlets are radially arranged on the side wall of the base body and are communicated with the water nozzle mounting pore channel, the water nozzle mounting pore channel is communicated with the balanced pressure cavity through a first pressure guide hole, the end part of the balanced pressure cavity is sealed through a pressure guide plug, the opening degree adjusting mechanism is arranged in the water nozzle mounting pore channel and is used for changing the flow area of the water outlets according to the adjustment of the position and changing the size of a pressure value provided for the balanced pressure cavity according to the adjustment of the position, the balance pressure adjusting mechanism is arranged in the balance pressure cavity and is used for balancing underground pressure; the opening degree adjusting mechanism comprises a screw rod, a transmission sleeve, a support sleeve, a thrust bearing and a motor, one end of the screw rod is connected with the transmission sleeve, the other end of the screw rod is connected with the motor, the support sleeve is arranged between the other end of the screw rod and the inner wall of a water nozzle mounting pore passage, the thrust bearing is arranged between the screw rod and the support sleeve, a hydraulic chamber for filling hydraulic oil is arranged in a cavity between the transmission sleeve and the support sleeve in the water nozzle mounting pore passage, and the hydraulic chamber is communicated with a balance pressure cavity through a first pressure guide hole;
the balance pressure adjusting mechanism comprises an oil bag and a protective sleeve, the oil bag is sleeved outside a base body, the protective sleeve is sleeved outside the oil bag, two ends of the protective sleeve are connected with the base body, an oil bag inner cavity of the oil bag is communicated with a water nozzle mounting pore passage through a second pressure guide hole and is used for filling underground fluid, an oil bag outer cavity between the outside of the oil bag and the protective sleeve is communicated with a balance pressure cavity through a third pressure guide hole, the balance pressure cavity is communicated with a hydraulic bin through a first pressure guide hole, the oil bag outer cavity, the balance pressure cavity and the hydraulic bin of the oil bag are all used for filling hydraulic oil, and the central channel and the balance pressure cavity are isolated.
2. The fully sealed balanced pressure water tap as claimed in claim 1, wherein the driving sleeve is provided with an anti-scouring body at an end thereof adjacent to the central passage.
3. The fully sealed balanced pressure water nozzle as claimed in claim 2, wherein the water nozzle mounting hole is provided with a first sealing ring and a second sealing ring at two sides of the water outlet hole.
4. The fully-sealed balanced pressure water nozzle as claimed in claim 3, wherein the inner wall of the water nozzle mounting hole is further provided with a first rotation preventing body and a second rotation preventing body, respectively, the first rotation preventing body is used for preventing the transmission sleeve from rotating in the moving process, and the second rotation preventing body is used for preventing the support sleeve from rotating in the rotating process of the screw rod.
5. The fully sealed balanced pressure water nozzle as claimed in claim 4, wherein the motor is connected with a motor control circuit for controlling the forward and reverse rotation of the motor, the motor control circuit comprises a motor H bridge circuit, a first protection circuit, a second protection circuit, a feedback circuit, a forward rotation driving circuit, a reverse rotation driving circuit, a first diode D1, a second diode D2, a third diode D3 and a fourth diode D4, the motor H bridge circuit is composed of a first field effect transistor Q1, a second field effect transistor Q2, a third field effect transistor Q3 and a fourth field effect transistor Q4, the first diode D1 and the third diode D3 are connected in series and then connected with the first field effect transistor Q1 at one end and with the other end connected with the third field effect transistor Q3, the second diode D2 and the fourth diode D4 are connected in series and then connected with the second field effect transistor Q2 at one end and with the other end connected with the fourth field effect transistor Q4, the two ends of the motor are respectively connected between a first field effect tube Q1 and a third field effect tube Q3 and between a second field effect tube Q2 and a fourth field effect tube Q4, a feedback circuit is connected to the motor in parallel, the two ends of the feedback circuit are respectively connected with a first protection circuit and a second protection circuit, the first protection circuit is respectively connected with the first field effect tube Q1 and the fourth field effect tube Q4 through a forward rotation driving circuit, and the second protection circuit is respectively connected with the second field effect tube Q2 and the third field effect tube Q3 through a reverse rotation driving circuit.
6. The fully-sealed balanced pressure water nozzle as claimed in claim 5, wherein the forward rotation driving circuit and the reverse rotation driving circuit each comprise a microprocessor U1, a first triode Q5, a second triode Q6, a first resistor R1 to a tenth resistor R10, the microprocessor U1 is connected with a first protection circuit or a second protection circuit, the first protection circuit or the second protection circuit is grounded after passing through a seventh resistor R7 and an eighth resistor R8, a first end of the second triode Q6 is connected with the first field effect transistor Q1 or the second field effect transistor Q2 through a tenth resistor R10 and a ninth resistor R9, a second end is connected between the seventh resistor R7 and the eighth resistor R8, a third end is connected between the fourth field effect transistor Q4 or the third field effect transistor Q3, the second end is connected between the eighth resistor R8 and the ground, and a first resistor R1 and a second resistor R2 which are connected in series in sequence, The first triode Q5, the third resistor R3 and the fourth resistor R4 are connected in parallel between the first end and the third end of the second triode Q6, one end of the first triode Q5 is connected between the ninth resistor R9 and the tenth resistor R10, one end of the first field-effect tube Q1 or the second field-effect tube Q2 is connected between the first resistor R1 and the second resistor R2, and one end of the fourth field-effect tube Q4 or the third field-effect tube Q3 is connected between the third resistor R3 and the fourth resistor R4.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204371265U (en) * | 2014-12-05 | 2015-06-03 | 中国石油天然气股份有限公司 | A kind of digital intelligent injection well downhole flow regulator |
| CN204419120U (en) * | 2014-12-31 | 2015-06-24 | 武汉海阔科技有限公司 | Double hydraulic control eccentric flow control valve |
| CN106150456A (en) * | 2015-04-16 | 2016-11-23 | 中国石油化工股份有限公司 | A kind of water injection well on-line intelligence regulation and control Tap |
| CN206816240U (en) * | 2017-06-16 | 2017-12-29 | 南京叁拾壹度机电设备有限公司 | A kind of intelligent watering device |
| CN108915651A (en) * | 2018-07-27 | 2018-11-30 | 中国石油天然气股份有限公司 | A kind of concentric constant pressure injection well downhole flow regulator of bridge-type |
| CN109667974A (en) * | 2018-12-04 | 2019-04-23 | 贵州航天凯山石油仪器有限公司 | A kind of High Pressure Difference opens water-quantity regulating device and method |
| CN210829182U (en) * | 2019-08-23 | 2020-06-23 | 西安威盛电子科技股份有限公司 | Active flow control device |
| CN210888903U (en) * | 2020-05-27 | 2020-06-30 | 西安洛科电子科技股份有限公司 | Intelligent separate injection device with underground double injection channels |
| CN211038600U (en) * | 2019-10-28 | 2020-07-17 | 大庆市世纪龙石油科技开发有限公司 | Constant flow injection allocation device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114841B (en) * | 2013-02-01 | 2015-10-14 | 中国石油天然气股份有限公司 | The concentric direct-reading measurement and adjustment instrument of bridge-type |
-
2020
- 2020-12-10 CN CN202011451301.8A patent/CN112576228B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204371265U (en) * | 2014-12-05 | 2015-06-03 | 中国石油天然气股份有限公司 | A kind of digital intelligent injection well downhole flow regulator |
| CN204419120U (en) * | 2014-12-31 | 2015-06-24 | 武汉海阔科技有限公司 | Double hydraulic control eccentric flow control valve |
| CN106150456A (en) * | 2015-04-16 | 2016-11-23 | 中国石油化工股份有限公司 | A kind of water injection well on-line intelligence regulation and control Tap |
| CN206816240U (en) * | 2017-06-16 | 2017-12-29 | 南京叁拾壹度机电设备有限公司 | A kind of intelligent watering device |
| CN108915651A (en) * | 2018-07-27 | 2018-11-30 | 中国石油天然气股份有限公司 | A kind of concentric constant pressure injection well downhole flow regulator of bridge-type |
| CN109667974A (en) * | 2018-12-04 | 2019-04-23 | 贵州航天凯山石油仪器有限公司 | A kind of High Pressure Difference opens water-quantity regulating device and method |
| CN210829182U (en) * | 2019-08-23 | 2020-06-23 | 西安威盛电子科技股份有限公司 | Active flow control device |
| CN211038600U (en) * | 2019-10-28 | 2020-07-17 | 大庆市世纪龙石油科技开发有限公司 | Constant flow injection allocation device |
| CN210888903U (en) * | 2020-05-27 | 2020-06-30 | 西安洛科电子科技股份有限公司 | Intelligent separate injection device with underground double injection channels |
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Denomination of invention: Fully sealed balanced water nozzle Effective date of registration: 20230413 Granted publication date: 20220920 Pledgee: Xi'an innovation financing Company limited by guarantee Pledgor: Xi'an Luoke Electronic Technology Co.,Ltd. Registration number: Y2023610000269 |