CN115387770B - Fracturing powder conveying device and conveying method - Google Patents
Fracturing powder conveying device and conveying method Download PDFInfo
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- CN115387770B CN115387770B CN202110565351.7A CN202110565351A CN115387770B CN 115387770 B CN115387770 B CN 115387770B CN 202110565351 A CN202110565351 A CN 202110565351A CN 115387770 B CN115387770 B CN 115387770B
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- 239000000843 powder Substances 0.000 title claims abstract description 201
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 96
- 230000005540 biological transmission Effects 0.000 claims description 28
- 238000003860 storage Methods 0.000 claims description 15
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000002349 favourable effect Effects 0.000 abstract description 10
- 238000009826 distribution Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 description 13
- 230000000903 blocking effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000005304 joining Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
Abstract
The application provides a fracturing powder conveying device and a conveying method. The conveying device comprises a main body, wherein a liquid inlet channel, a powder inlet channel and a mixing flow channel are arranged in the main body, and an outlet of the liquid inlet channel and an outlet of the powder inlet channel are communicated with an inlet of the mixing flow channel; a channel conveyor belt is arranged on the side wall of the powder inlet channel, the channel conveyor belt is driven by an impeller, and the impeller protrudes out of the inner wall of the mixing flow channel. The conveying device is favorable for avoiding blockage of the powder inlet channel, so that the blocked powder inlet channel is avoided to be manually dredged, labor is saved, and liquid distribution efficiency is improved. Meanwhile, the mixed liquid flowing through the mixed flow channel drives the impeller to rotate, the impeller provides power for the conveying device, and the conveying device does not need to use electric energy, so that electric power resources are saved.
Description
Technical Field
The invention relates to the technical field of oil gas development fracturing, in particular to a fracturing powder conveying device and a conveying method.
Background
At present, a liquid preparation vehicle is adopted to continuously prepare liquid at a fracturing site. The liquid dispensing vehicle is a heavy device, and a part of operation teams do not have conditions and cannot use the liquid dispensing vehicle to continuously dispense liquid. A working team not equipped with a liquid dispensing vehicle often uses a three-way device that has been simply modified to perform continuous liquid dispensing from a liquid storage tank.
The improved tee joint device has a simple structure and poor reliability, and dry powder adhesion is caused by wetting the inner wall of the tee joint device due to liquid splashing, so that a powder inlet channel of the tee joint device is blocked. After the powder inlet channel is blocked, the powder inlet channel has to be manually dredged, so that the operation is complicated, the labor force is not saved, and the liquid preparation efficiency is seriously affected.
The prior art discloses adopting the electricity to drive the mode to add powder to the powder storehouse to make the device send powder in succession, add reserve water powder blender and reserve centrifugal pump simultaneously, in order to guarantee the continuous operation of device. The prior art also discloses adopting reducing tee bend to realize negative pressure powder suction, changing the size of negative pressure district through motor drive lead screw simultaneously in order to change the powder suction rate, solving the problem that the pipeline is stopped up, flowing back returns water. But both require power consumption, which is disadvantageous for saving power resources. The prior art also provides some technical suggestions for solving the problems of low viscosity and insufficient viscosity of the fracturing fluid, and solves the problem of water and powder caking phenomenon by additionally arranging a suction conduit for secondary mixing so as to ensure that the fracturing fluid is more uniform. But it does not solve the technical problem of blockage of the powder inlet channel.
Disclosure of Invention
Aiming at the problems in the prior art, the application provides a fracturing powder conveying device and a conveying method, which are beneficial to avoiding blockage of a powder inlet channel, so that the blocked powder inlet channel is avoided to be manually dredged, labor is saved, and liquid distribution efficiency is improved.
In a first aspect, the present invention provides a fracturing powder conveying device, the conveying device includes a main body, a liquid inlet channel, a powder inlet channel and a mixing runner are arranged in the main body, and an outlet of the liquid inlet channel and an outlet of the powder inlet channel are communicated with an inlet of the mixing runner; and a channel conveyor belt is arranged on the side wall of the powder inlet channel, the channel conveyor belt is driven by an impeller, and the impeller protrudes out of the inner wall of the mixing flow channel. By utilizing the conveying device, the powder inlet channel can be prevented from being blocked, so that the blocked powder inlet channel is prevented from being manually dredged, labor is saved, and liquid distribution efficiency is improved. Meanwhile, the mixed liquid flowing through the mixed flow channel drives the impeller to rotate, the impeller provides power for the conveying device, and the conveying device does not need to use electric energy, so that electric power resources are saved.
In one embodiment of the first aspect, an inlet fixed pulley and an outlet fixed pulley are respectively arranged at the inlet and the outlet of the channel conveyor belt, the impeller is connected with the outlet fixed pulley through a transmission belt, and the impeller drives the transmission belt to move. By the embodiment, the impeller driving channel conveyor belt is beneficial to running, so that the occurrence of blockage of the powder inlet channel is avoided.
In one embodiment of the first aspect, the outlet fixed pulley moves the channel conveyor belt. By the embodiment, the impeller driving channel conveyor belt is beneficial to running, so that the occurrence of blockage of the powder inlet channel is avoided.
In an embodiment of the first aspect, the outlet fixed pulley is located at a junction of the powder inlet channel side wall and the mixing channel side wall, and the impeller, the inlet fixed pulley and the outlet fixed pulley are located in the same vertical plane. According to the embodiment, the outlet fixed pulley is positioned at the joint of the side wall of the powder inlet channel and the side wall of the mixing flow channel, and the inlet fixed pulley is positioned at the inlet of the powder inlet channel, so that the whole area of the powder inlet channel is protected from being blocked; the impeller, the inlet fixed pulley and the outlet fixed pulley are positioned in the same vertical plane, which is beneficial to the stable transmission and operation of the impeller, the transmission belt and the channel transmission belt.
In one embodiment of the first aspect, the top of the conveying device is provided with a powder storage box, the bottom of the powder storage box is provided with a powder box conveying belt, one end of the powder box conveying belt is the inlet fixed pulley, the other end of the powder box conveying belt is the powder box fixed pulley, and the inlet fixed pulley drives the powder box conveying belt to move. By the embodiment, the self-adaptive powder supply is facilitated, and the mixing flow passage is not easy to be blocked.
In one embodiment of the first aspect, the inlet fixed pulley and the powder tank fixed pulley are located at two ends of the bottom of the powder tank, and the powder tank fixed pulley, the impeller, the inlet fixed pulley and the outlet fixed pulley are located in the same vertical plane. According to the embodiment, the inlet fixed pulleys and the powder box fixed pulleys are positioned at two ends of the bottom of the powder box, so that full-automatic powder supply is realized, manual feeding and powder moving are not needed, and labor saving is facilitated; the fixed pulley of the powder box, the impeller, the fixed pulley of the inlet and the fixed pulley of the outlet are positioned in the same vertical plane, which is beneficial to the stable transmission and operation of the impeller, the transmission belt, the channel transmission belt and the powder box transmission belt.
In one embodiment of the first aspect, an included angle between the liquid inlet channel and the powder inlet channel is an acute angle. Through this embodiment, the lateral wall of the opposite side of passageway conveyer belt can provide the support for the powder, avoids the powder free fall, is favorable to avoiding the jam of powder passageway.
In an embodiment of the first aspect, the diameter at the inlet of the mixing channel is smaller than the diameter at the inlet of the feed channel, and the diameter at the outlet of the mixing channel is equal to the diameter at the inlet of the feed channel. By means of the embodiment, a negative pressure area is formed in the small diameter range of the mixing flow channel, the flow speed of the mixed liquid is increased, and therefore the impeller rotates faster.
In an embodiment of the first aspect, the outlet of the liquid inlet channel and the inlet of the mixing channel transition smoothly. By the embodiment, the reducing part can be prevented from being continuously washed by the feed liquid, so that corrosion is caused, and the service life of the conveying device is prolonged.
In an embodiment of the first aspect, the impeller is disposed at a diameter variation of the mixing channel. With this embodiment, the rotational speed of the impeller is advantageously maximized, since the flow rate of the mixed liquor is maximized at the reducing point.
In a second aspect, the present invention further provides a conveying method by using the fracturing powder conveying device in the first aspect and any embodiment thereof, wherein the mixed liquid in the mixing runner drives the impeller to rotate so as to drive the channel conveyor belt to operate, and at least part of the powder is conveyed to the inlet of the mixing runner by the channel conveyor belt. By utilizing the conveying method, the blockage of the powder inlet channel can be avoided, so that the blocked powder inlet channel is prevented from being manually dredged, the labor is saved, and the liquid distribution efficiency is improved. Meanwhile, the mixed liquid flowing through the mixed flow channel drives the impeller to rotate, the impeller provides power for the conveying device, and the conveying device does not need to use electric energy, so that electric power resources are saved.
In one embodiment of the second aspect, the impeller drives a drive belt, which drives an outlet fixed pulley to rotate to drive the passage conveyor belt to operate, so that the impeller drives the passage conveyor belt to operate. By the embodiment, the impeller driving channel conveyor belt is beneficial to running, so that the occurrence of blockage of the powder inlet channel is avoided.
In one embodiment of the second aspect, the channel conveyor belt drives an inlet fixed pulley to rotate, and the inlet fixed pulley drives a powder box conveyor belt to operate, so that the impeller drives the powder box conveyor belt to operate. By the embodiment, the self-adaptive powder supply is facilitated, and the mixing flow passage is not easy to be blocked.
In one embodiment of the second aspect, the diameter at the inlet of the mixing channel is smaller than the diameter at the inlet of the liquid inlet channel and the diameter at the outlet of the mixing channel, a negative pressure zone is formed at the inlet of the mixing channel, through which the liquid is accelerated; the impeller is arranged at the reducing position of the mixing runner. By means of the embodiment, a negative pressure area is formed in the small diameter range of the mixing flow channel, the flow speed of the mixed liquid is increased, and therefore the impeller rotates faster.
Compared with the prior art, the fracturing powder conveying device and the conveying method have the following beneficial effects.
1. The conveying device is beneficial to avoiding blockage of the powder inlet channel, thereby avoiding manual dredging of the blocked powder inlet channel, saving labor force and improving liquid distribution efficiency.
2. The mixed liquid flowing through the mixed flow channel drives the impeller to rotate, the impeller provides power for the conveying device, and the conveying device does not need to use electric energy, so that electric power resources are saved.
3. The powder case conveyer belt is arranged, so that self-adaptive powder supply is realized, and a mixing runner is not easy to block.
4. The diameter of the inlet of the mixing runner is smaller than that of the inlet of the liquid inlet channel, and the diameter of the outlet of the mixing runner is equal to that of the inlet of the liquid inlet channel. The impeller is arranged at the reducing position of the mixing flow passage, so that a negative pressure area is formed in the small diameter range of the mixing flow passage, and the flow velocity of the mixed liquid is increased, so that the impeller rotates faster. And the maximum flow velocity of the mixed liquid at the reducing position is beneficial to further improving the rotating speed of the impeller.
The above-described features may be combined in various suitable ways or replaced by equivalent features as long as the object of the present invention can be achieved.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings, in which:
fig. 1 shows a schematic structure of a transfer device according to an embodiment of the present invention.
List of reference numerals:
1-a main body; 4-a powder storage box; 10-a liquid inlet channel; 20-a powder inlet channel; 21-lane conveyor; 22-inlet fixed pulleys; 23-outlet fixed pulley; 30-mixing flow channels; 31-an impeller; 32-a drive belt; 40-a powder box conveyor belt; 41-powder box fixed pulley.
In the drawings, like parts are designated with like reference numerals. The figures are not to scale.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the present embodiment provides a fracturing powder conveying device, which comprises a main body 1, wherein a liquid inlet channel 10, a powder inlet channel 20 and a mixing flow channel 30 are arranged in the main body 1, and an outlet of the liquid inlet channel 10 and an outlet of the powder inlet channel 20 are communicated with an inlet of the mixing flow channel 30; the side wall of the powder inlet channel 20 is provided with a channel conveyor belt 21, the channel conveyor belt 21 is driven by an impeller 31, and the impeller 31 protrudes out of the inner wall of the mixing runner 30.
The outlet of the liquid inlet channel 10 and the outlet of the powder inlet channel 20 are communicated with the inlet of the mixing flow channel 30. Powder enters the mixing flow channel 30 from the powder inlet channel 20, and liquid inlet enters the mixing flow channel 30 from the liquid inlet channel 10. The powder and the feed liquid are primarily mixed in the mixing flow channel 30 to form a mixed liquid, and the mixed liquid flows through the mixing flow channel 30 and is discharged from an outlet of the mixing flow channel 30.
The impeller 31 protrudes from the inner wall of the mixing flow channel 30, and the impeller 31 rotates under the driving of the mixed liquid flowing through the mixing flow channel 30. The rotating impeller 31 drives the channel conveyor 21 in operation, thereby bringing at least part of the powder from the powder inlet channel 20 to the mixing channel 30.
The larger the flow rate of the mixed liquid, the larger the rotation speed of the impeller 31, the larger the moving speed of the passage conveyor belt 21, and the faster the powder feeding; conversely, the smaller the flow rate of the mixed liquid, the smaller the rotation speed of the impeller 31, the smaller the moving speed of the passage conveyor 21, and the slower the powder feeding. The design is favorable for the component stabilization of the mixed solution, the proportion of the powder and the feed liquor is maintained in a certain range, and the mixed flow channel 30 is not easy to be blocked.
When the powder inlet channel 20 is blocked, the impeller 31 can drive the channel conveyor belt 21 to operate due to the fact that the impeller 31 is driven to rotate continuously by the liquid inlet, the blocked powder is taken away from the blocked position by the operating channel conveyor belt 21, the blocking of the powder inlet channel 20 is avoided, the blocked powder inlet channel 20 is prevented from being dredged manually, labor is saved, and liquid distribution efficiency is improved.
The mixed liquid flowing through the mixing runner 30 drives the impeller 31 to rotate, the impeller 31 provides power for the conveying device, and the conveying device does not need to use electric energy, so that electric power resources are saved. The channel conveyor belt 21 is driven by the impeller 31 to operate without stopping, so that the blockage of the powder inlet channel 20 can be effectively avoided.
This embodiment is favorable to avoiding advancing powder passageway 20 to block up to avoid artifical unblock powder passageway 20 that advances that blocks up, be favorable to practicing thrift the labour and improve the liquid efficiency of joining in marriage. Meanwhile, the mixed liquid flowing through the mixing runner 30 drives the impeller 31 to rotate, the impeller 31 provides power for the conveying device, and the conveying device does not need to use electric energy, so that electric power resources are saved.
In one embodiment, as shown in fig. 1, an inlet fixed pulley 22 and an outlet fixed pulley 23 are respectively arranged at the inlet and the outlet of the channel conveyor belt 21, an impeller 31 is connected with the outlet fixed pulley 23 through a transmission belt 32, and the impeller 31 drives the transmission belt 32 to move.
The impeller 31 rotates to drive the transmission belt 32 to operate, so as to provide power for the operation of the channel transmission belt 21 to transport at least part of powder, and the occurrence of blockage of the powder inlet channel 20 is avoided.
This embodiment is advantageous in that the impeller 31 drives the passage conveyor belt 21 to operate, thereby advantageously avoiding the occurrence of clogging of the powder inlet passage 20.
In one embodiment, the exit pulley 23 moves the channel belt 21.
The impeller 31 rotates to drive the transmission belt 32 to operate, and the operating transmission belt 32 drives the outlet fixed pulley 23 to rotate. The rotating outlet fixed pulley 23 drives the channel conveyor belt 21 to operate, so that at least part of powder is transported, and the blocking of the powder inlet channel 20 is avoided.
This embodiment is advantageous in that the impeller 31 drives the passage conveyor belt 21 to operate, thereby advantageously avoiding the occurrence of clogging of the powder inlet passage 20.
In one embodiment, as shown in fig. 1, the outlet fixed pulley 23 is located at the junction of the side wall of the powder inlet passage 20 and the side wall of the mixing channel 30, and the impeller 31, the inlet fixed pulley 22 and the outlet fixed pulley 23 are located in the same vertical plane.
The outlet fixed pulley 23 of the present embodiment is located at the connection position between the side wall of the powder inlet channel 20 and the side wall of the mixing channel 30, and the inlet fixed pulley 22 is located at the inlet of the powder inlet channel 20, so that the whole area of the powder inlet channel 20 is protected from being blocked; the impeller 31, the inlet fixed pulley 22 and the outlet fixed pulley 23 are positioned in the same vertical plane, which is beneficial to the stable transmission and operation of the impeller 31, the transmission belt 32 and the channel transmission belt 21.
In one embodiment, as shown in fig. 1, the top of the conveying device is provided with a powder storage box 4, the bottom of the powder storage box 4 is provided with a powder box conveying belt 40, one end of the powder box conveying belt 40 is provided with an inlet fixed pulley 22, the other end of the powder box conveying belt 40 is provided with a powder box fixed pulley 41, and the inlet fixed pulley 22 drives the powder box conveying belt 40 to move.
The outlet fixed pulley 23 drives the passage conveyor 21 to move. The channel conveyor belt 21 drives the inlet fixed pulley 22 to rotate, and the rotating inlet fixed pulley 22 drives the powder box conveyor belt 40 to move, so that automatic powder supply is realized.
Since the larger the flow rate of the mixed liquid is, the larger the rotation speed of the impeller 31 is, the larger the moving speed of the channel conveyor belt 21 is, and the moving speed of the powder box conveyor belt 40 is increased, and the powder feeding is faster; conversely, the smaller the flow rate of the mixed liquid, the smaller the rotation speed of the impeller 31, the smaller the moving speed of the passage conveyor 21, and the slower the powder feeding, the moving speed of the powder box conveyor 40 decreases. By the design, self-adaptive powder supply is realized, the stability of the components of the mixed liquid is facilitated, the proportion of the powder to the liquid is maintained within a certain range, and the mixed flow channel 30 is not easy to be blocked.
This embodiment is advantageous in realizing the self-adaptive powder supply, and is not likely to clog the mixing flow passage 30.
In one embodiment, as shown in fig. 1, the inlet fixed pulley 22 and the powder box fixed pulley 41 are positioned at both ends of the bottom of the powder box, and the powder box fixed pulley 41, the impeller 31, the inlet fixed pulley 22 and the outlet fixed pulley 23 are positioned in the same vertical plane.
The inlet fixed pulley 22 and the powder box fixed pulley 41 of the embodiment are positioned at two ends of the bottom of the powder box, so that full-automatic powder supply is realized, manual feeding and powder moving are not needed, and labor saving is facilitated; the fixed pulley 41, the impeller 31, the fixed pulley 22 and the fixed pulley 23 are positioned in the same vertical plane, which is beneficial to the stable transmission and operation of the impeller 31, the transmission belt 32, the channel transmission belt 21 and the powder box transmission belt 40.
In one embodiment, as shown in fig. 1, the included angle between the liquid inlet channel 10 and the powder inlet channel 20 is an acute angle.
The side wall of the other side of the channel conveyor belt 21 in the embodiment can provide support for powder, so that the powder is prevented from falling freely, and the blockage of a powder channel is avoided.
In one embodiment, as shown in fig. 1, the diameter at the inlet of the mixing channel 30 is smaller than the diameter at the inlet of the feed channel 10, and the diameter at the outlet of the mixing channel 30 is equal to the diameter at the inlet of the feed channel 10.
This embodiment is advantageous in that a negative pressure region is formed in a small diameter range of the mixing flow path 30, and in that the flow rate of the mixed liquid is increased, thereby enabling the impeller 31 to rotate faster.
In one embodiment, as shown in fig. 1, the outlet of the inlet channel 10 smoothly transitions with the inlet of the mixing channel 30.
According to the embodiment, the reducing part can be prevented from being continuously washed by the liquid inlet, so that corrosion is caused, and the service life of the conveying device is prolonged.
In one embodiment, as shown in fig. 1, an impeller 31 is provided at the variable diameter of the mixing channel 30.
This embodiment is advantageous in that the rotation speed of the impeller 31 is maximized because the flow rate of the mixed liquid is maximized at the variable diameter.
The present embodiment provides a conveying method by using the fracturing powder conveying device, wherein the mixed liquid in the mixing runner 30 drives the impeller 31 to rotate so as to drive the channel conveyor belt 21 to operate, and at least part of the powder is conveyed to the inlet of the mixing runner 30 by the channel conveyor belt 21.
This embodiment is favorable to avoiding advancing powder passageway 20 to block up to avoid artifical unblock powder passageway 20 that advances that blocks up, be favorable to practicing thrift the labour and improve the liquid efficiency of joining in marriage. Meanwhile, the mixed liquid flowing through the mixing runner 30 drives the impeller 31 to rotate, the impeller 31 provides power for the conveying device, and the conveying device does not need to use electric energy, so that electric power resources are saved.
In one embodiment, the impeller 31 drives the driving belt 32, and the driving belt 32 drives the outlet fixed pulley 23 to rotate so as to drive the channel conveyor belt 21 to operate, so that the impeller 31 drives the channel conveyor belt 21 to operate.
This embodiment is advantageous in that the impeller 31 drives the passage conveyor belt 21 to operate, thereby advantageously avoiding the occurrence of clogging of the powder inlet passage 20.
In one embodiment, the channel conveyor 21 rotates the inlet fixed pulley 22, and the inlet fixed pulley 22 drives the powder box conveyor 40 to operate, so that the impeller 31 drives the powder box conveyor 40 to operate.
This embodiment is advantageous in realizing the self-adaptive powder supply, and is not likely to clog the mixing flow passage 30.
In one embodiment, the diameter of the inlet of the mixing channel 30 is smaller than the diameter of the inlet of the liquid inlet channel 10 and the diameter of the outlet of the mixing channel 30, a negative pressure area is formed at the inlet of the mixing channel 30, and the liquid is accelerated to pass through the negative pressure area; the impeller is arranged at the reducing position of the mixing runner.
This embodiment is advantageous in that a negative pressure region is formed in a small diameter range of the mixing flow path 30, and in that the flow rate of the mixed liquid is increased, thereby enabling the impeller 31 to rotate faster. The maximum flow velocity of the mixed liquid at the reducing position is beneficial to further improving the rotating speed of the impeller 31.
Example 1
The embodiment provides a fracturing powder conveying device, which comprises a main body 1, wherein a liquid inlet channel 10, a powder inlet channel 20 and a mixing flow channel 30 are arranged in the main body 1, and the outlet of the liquid inlet channel 10 and the outlet of the powder inlet channel 20 are communicated with the inlet of the mixing flow channel 30; the side wall of the powder inlet channel 20 is provided with a channel conveyor belt 21, the channel conveyor belt 21 is driven by an impeller 31, and the impeller 31 protrudes out of the inner wall of the mixing runner 30.
The outlet of the liquid inlet channel 10 and the outlet of the powder inlet channel 20 are communicated with the inlet of the mixing flow channel 30. Powder enters the mixing flow channel 30 from the powder inlet channel 20, and liquid inlet enters the mixing flow channel 30 from the liquid inlet channel 10. The powder and the feed liquid are primarily mixed in the mixing flow channel 30 to form a mixed liquid, and the mixed liquid flows through the mixing flow channel 30 and is discharged from an outlet of the mixing flow channel 30.
The impeller 31 protrudes from the inner wall of the mixing flow channel 30, and the impeller 31 rotates under the driving of the mixed liquid flowing through the mixing flow channel 30. The rotating impeller 31 drives the channel conveyor 21 in operation, thereby bringing at least part of the powder from the powder inlet channel 20 to the mixing channel 30.
The larger the flow rate of the mixed liquid, the larger the rotation speed of the impeller 31, the larger the moving speed of the passage conveyor belt 21, and the faster the powder feeding; conversely, the smaller the flow rate of the mixed liquid, the smaller the rotation speed of the impeller 31, the smaller the moving speed of the passage conveyor 21, and the slower the powder feeding. The design is favorable for the component stabilization of the mixed solution, the proportion of the powder and the feed liquor is maintained in a certain range, and the mixed flow channel 30 is not easy to be blocked.
When the powder inlet channel 20 is blocked, the impeller 31 can drive the channel conveyor belt 21 to operate due to the fact that the impeller 31 is driven to rotate continuously by the liquid inlet, the blocked powder is taken away from the blocked position by the operating channel conveyor belt 21, the blocking of the powder inlet channel 20 is avoided, the blocked powder inlet channel 20 is prevented from being dredged manually, labor is saved, and liquid distribution efficiency is improved.
The mixed liquid flowing through the mixing runner 30 drives the impeller 31 to rotate, the impeller 31 provides power for the conveying device, and the conveying device does not need to use electric energy, so that electric power resources are saved. The channel conveyor belt 21 is driven by the impeller 31 to operate without stopping, so that the blockage of the powder inlet channel 20 can be effectively avoided.
This embodiment is favorable to avoiding advancing powder passageway 20 to block up to avoid artifical unblock powder passageway 20 that advances that blocks up, be favorable to practicing thrift the labour and improve the liquid efficiency of joining in marriage. Meanwhile, the mixed liquid flowing through the mixing runner 30 drives the impeller 31 to rotate, the impeller 31 provides power for the conveying device, and the conveying device does not need to use electric energy, so that electric power resources are saved.
Example two
The inlet and outlet of the channel conveyor belt 21 are respectively provided with an inlet fixed pulley 22 and an outlet fixed pulley 23, an impeller 31 is connected with the outlet fixed pulley 23 through a transmission belt 32, and the impeller 31 drives the transmission belt 32 to move. The outlet fixed pulley 23 drives the passage conveyor 21 to move.
The impeller 31 rotates to drive the transmission belt 32 to operate, and the operating transmission belt 32 drives the outlet fixed pulley 23 to rotate. The rotating outlet fixed pulley 23 drives the channel conveyor belt 21 to operate, so that at least part of powder is transported, and the blocking of the powder inlet channel 20 is avoided.
The powder storage box 4 is installed at the top of the conveying device, the powder storage box conveying belt 40 is arranged at the bottom of the powder storage box 4, one end of the powder storage box conveying belt 40 is provided with the inlet fixed pulley 22, the other end of the powder storage box conveying belt 40 is provided with the powder storage box fixed pulley 41, and the inlet fixed pulley 22 drives the powder storage box conveying belt 40 to move.
The outlet fixed pulley 23 drives the passage conveyor 21 to move. The channel conveyor belt 21 drives the inlet fixed pulley 22 to rotate, and the rotating inlet fixed pulley 22 drives the powder box conveyor belt 40 to move, so that automatic powder supply is realized.
Since the larger the flow rate of the mixed liquid is, the larger the rotation speed of the impeller 31 is, the larger the moving speed of the channel conveyor belt 21 is, and the moving speed of the powder box conveyor belt 40 is increased, and the powder feeding is faster; conversely, the smaller the flow rate of the mixed liquid, the smaller the rotation speed of the impeller 31, the smaller the moving speed of the passage conveyor 21, and the slower the powder feeding, the moving speed of the powder box conveyor 40 decreases. By the design, self-adaptive powder supply is realized, the stability of the components of the mixed liquid is facilitated, the proportion of the powder to the liquid is maintained within a certain range, and the mixed flow channel 30 is not easy to be blocked.
This embodiment is advantageous in realizing an adaptive powder supply, and is not likely to clog the mixing flow passage 30.
Example III
The diameter at the inlet of the mixing channel 30 is smaller than the diameter at the inlet of the feed channel 10, and the diameter at the outlet of the mixing channel 30 is equal to the diameter at the inlet of the feed channel 10. The impeller 31 is provided at the variable diameter of the mixing flow path 30.
This embodiment is advantageous in that a negative pressure region is formed in a small diameter range of the mixing flow path 30, and in that the flow rate of the mixed liquid is increased, thereby enabling the impeller 31 to rotate faster. The maximum flow velocity of the mixed liquid at the reducing position is beneficial to further improving the rotating speed of the impeller 31.
In the description of the present invention, it should be understood that the terms "upper," "lower," "bottom," "top," "front," "rear," "inner," "outer," "left," "right," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in ways other than as described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other described embodiments.
Claims (7)
1. The fracturing powder conveying device is characterized by comprising a main body, wherein a liquid inlet channel, a powder inlet channel and a mixing runner are arranged in the main body, and an outlet of the liquid inlet channel and an outlet of the powder inlet channel are communicated with an inlet of the mixing runner; a channel conveyor belt is arranged on the side wall of the powder inlet channel, the channel conveyor belt is driven by an impeller, and the impeller protrudes out of the inner wall of the mixing flow channel; an inlet fixed pulley and an outlet fixed pulley are respectively arranged at the inlet and the outlet of the channel conveyor belt, the impeller is connected with the outlet fixed pulley through a transmission belt, and the impeller drives the transmission belt to move; the outlet fixed pulley drives the channel conveyor belt to move; the powder storage box is arranged at the top of the conveying device, a powder box conveying belt is arranged at the bottom of the powder storage box, one end of the powder box conveying belt is provided with an inlet fixed pulley, the other end of the powder box conveying belt is provided with a powder box fixed pulley, and the inlet fixed pulley drives the powder box conveying belt to move; the included angle between the liquid inlet channel and the powder inlet channel is an acute angle; the diameter of the inlet of the mixing flow channel is smaller than that of the inlet of the liquid inlet channel, and the diameter of the outlet of the mixing flow channel is equal to that of the inlet of the liquid inlet channel; the impeller is arranged at the reducing position of the mixing runner.
2. The fracturing powder conveying device of claim 1, wherein the outlet fixed pulley is located at a junction of the powder inlet channel side wall and the mixing channel side wall, and the impeller, the inlet fixed pulley and the outlet fixed pulley are located in the same vertical plane.
3. The fracturing powder conveying device of claim 1, wherein the inlet fixed pulley and the powder tank fixed pulley are positioned at two ends of the bottom of the powder tank, and the powder tank fixed pulley, the impeller, the inlet fixed pulley and the outlet fixed pulley are positioned in the same vertical plane.
4. The fracturing powder delivery device of claim 1, wherein the outlet of the feed channel transitions smoothly with the inlet of the mixing channel.
5. A method of delivery using the fracturing powder delivery apparatus of any one of claims 1 to 4, wherein the mixed liquor in the mixing channel drives the impeller to rotate to drive the channel conveyor belt in operation, at least part of the powder being transported by the channel conveyor belt to the inlet of the mixing channel; the diameter of the inlet of the mixing flow channel is smaller than the diameter of the inlet of the liquid inlet channel and the diameter of the outlet of the mixing flow channel, a negative pressure area is formed at the inlet of the mixing flow channel, and liquid is accelerated to pass through the negative pressure area; the impeller is arranged at the reducing position of the mixing runner.
6. The method of claim 5, wherein the impeller drives a drive belt that rotates an outlet fixed pulley to drive the passage conveyor belt, thereby causing the impeller to drive the passage conveyor belt.
7. The method of claim 6, wherein the channel conveyor belt rotates an inlet fixed pulley, and wherein the inlet fixed pulley rotates a powder bin conveyor belt, thereby causing the impeller to drive the powder bin conveyor belt.
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| CN202110565351.7A CN115387770B (en) | 2021-05-24 | 2021-05-24 | Fracturing powder conveying device and conveying method |
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| CN202110565351.7A CN115387770B (en) | 2021-05-24 | 2021-05-24 | Fracturing powder conveying device and conveying method |
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| CN115387770A (en) | 2022-11-25 |
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