A flow water distribution device with intelligent injection

Abstract

The present invention discloses a flow water distribution device for intelligent dispensing, comprising a water injection main pipe, a filter, a water injection branch pipe, a water pressure mounting seat, a flow regulating valve, an intelligent control unit, a water pressure sensor, an inner flow channel, a locking unit and a power unit. The present invention has the following advantages and effects: the assembly structure of the water pressure sensor in the flow water distribution device for intelligent dispensing is optimized, the assembly efficiency and convenience of the water pressure sensor are improved, and the stability of the water pressure sensor after assembly is improved; further, convenience is provided for the frequent maintenance and replacement of the subsequent water pressure sensor.

Description

Technical Field

[0001] The invention relates to the field of fluid pressure monitoring, and in particular to a flow water distribution device for intelligent injection. Background Art

[0002] In the early stage of oilfield development, water injection was basically carried out in a general way according to the natural water absorption capacity of oil layers of different properties, resulting in the water absorption of oil layers with different permeabilities differing by several to dozens of times, causing the injected water to advance in a single layer and in a plane. In response to this situation, the layered water injection technology was applied to effectively control the oil layer pressure by controlling the water injection in the high permeability layer and strengthening the water injection in the low permeability layer, and to a certain extent, to control the situation of too fast water content rising in the oilfield. As the oilfield enters the medium and high water content stage of development, the formation pressure is always controlled near the original formation pressure by continuously strengthening the layered water injection, ensuring that the oil well has sufficient production pressure difference and strong liquid production capacity.

[0003] The intelligent flow water distribution device can automatically inject water into the lower packer in the well according to the set conditions, separate the oil layers with large differences, and then use the water distributor to distribute water in layers, so that the water injection volume of the high permeability layer can be controlled, and the water injection of the medium and low permeability oil layers can be strengthened, so that all kinds of oil layers can play a role.

[0004] In order to ensure the flow balance of each branch in the intelligent water distribution device, water pressure sensors need to be configured separately. The functions of water pressure sensors are:

[0005] 1. In most flow distribution devices, there is a certain relationship between flow and pressure. By measuring the water pressure in the pipe, the system can infer the change of flow. For example, according to the Bernoulli equation, the water flow and pressure in the pipe are closely related. The use of water pressure sensors can monitor pressure changes in real time, thereby indirectly controlling the flow and ensuring that each branch receives the appropriate amount of water.

[0006] 2. Too high water pressure may cause pipe rupture or equipment damage, while too low water pressure may affect the normal operation of the equipment. The water pressure sensor monitors the water pressure in real time. The system can adjust the pump speed or start and stop the valve according to the pressure signal to prevent abnormal water pressure, thereby ensuring the safe and stable operation of the system.

[0007] Therefore, water pressure sensor is essential.

[0008] On the one hand, the existing intelligent flow distribution device adopts screw fixing when installing the water pressure sensor, which has the following disadvantages:

[0009] 1. The screw-fixed connection is easily affected by vibration or pressure fluctuations. If there is a large water flow impact or equipment vibration in the pipeline system, the screw connection may gradually loosen, resulting in an unstable sensor position, and even causing water leakage or measurement errors.

[0010] 2. Screws and fixings are usually exposed to the outside and are prone to corrosion in long-term contact with water or humid environments. Especially in highly corrosive water sources, screws and other metal connectors have poor corrosion resistance, which may cause the sensor to loosen, corrode or be damaged.

[0011] 3. Screws generally need to be used with tools, and the actual assembly efficiency is low.

[0012] On the other hand, water pressure sensors are often damaged during actual application. The reasons are:

[0013] 1. Water pressure sensors are usually designed with a certain pressure range, but if they encounter a momentary high pressure shock, it may exceed the sensor's tolerance and cause damage to the sensor's internal components. Such shocks usually occur when the water flow changes rapidly or the valve is suddenly closed.

[0014] 2. Many water pressure sensors are designed for positive pressure measurement. If negative pressure or vacuum occurs in the system (such as pipeline leakage, negative pressure when the pump starts, etc.), the water pressure sensor may be damaged. Negative pressure may cause irreversible deformation of the internal diaphragm or other sensitive components.

[0015] 3. If there are impurities (such as sand, metal particles, etc.) in the pipeline or water flow impact occurs, the sensor may be unevenly stressed, thus affecting its operation. In particular, non-metallic sensor diaphragms and diaphragms are easily damaged by external forces.

[0016] Therefore, it is necessary to optimize the assembly structure of the water pressure sensor in the intelligent water distribution device, improve the assembly efficiency and convenience of the water pressure sensor, and improve the stability of the water pressure sensor after assembly. In addition, it is necessary to facilitate the frequent maintenance and replacement of the water pressure sensor. Summary of the invention

[0017] The purpose of the present invention is to provide a flow distribution device for intelligent injection to solve the problems raised in the background technology.

[0018] The above technical objectives of the present invention are achieved through the following technical solutions:

[0019] A flow distribution device for intelligent injection, comprising a water injection main pipe, a filter is arranged on the water injection main pipe, three sections of water injection branch pipes are connected to the water injection main pipe, the three sections of water injection branch pipes are respectively connected to oil layer parts with different permeabilities in a wellhead device; the three sections of water injection branch pipes are all fixed with a hydraulic pressure mounting seat, a flow regulating valve and an intelligent control unit by bolts;

[0020] The water pressure mounting seat is equipped with a water pressure sensor, and the water pressure sensor and the flow regulating valve are electrically connected to the intelligent control unit respectively;

[0021] The water pressure sensor and the water pressure mounting seat are connected detachably by plugging; the water pressure mounting seat has an inner flow channel connected to the corresponding water injection branch pipe. After the water pressure sensor and the water pressure mounting seat are plugged, the water pressure sensor will extend into the inner flow channel to realize water pressure monitoring;

[0022] A locking unit and a power unit are provided in the water pressure mounting seat. The locking unit can lock the water pressure sensor so that the water pressure sensor can be stably inserted into the water pressure mounting seat; the power unit can not only provide power for the locking unit to lock the water pressure sensor, but also cancel the power supply to allow the locking unit to release the locking of the water pressure sensor.

[0023] Further configuration is: the power unit uses gas as a power source, the locking unit is a pneumatic structure, and the locking unit will execute the action of locking the water pressure sensor after receiving the gas; the power unit can automatically seal after the gas is filled into the locking unit to prevent gas leakage, thereby allowing the locking unit to keep executing the action of locking the water pressure sensor;

[0024] The power unit cancels power supply by releasing the gas in the locking unit.

[0025] Further configuration is: an upper mounting groove for inserting a water pressure sensor is provided at the upper end of the water pressure mounting seat; an installation area is provided in the water pressure mounting seat, the locking unit comprises a locking shell located in the installation area, the upper and lower ends of the locking shell are fixedly provided with locking extension blocks, and the locking extension blocks are fixed to the installation area by screws;

[0026] A locking cavity is provided in the locking shell, and a locking shaft and a locking spring are arranged in the locking cavity. The locking shaft will be hidden in the locking cavity under the action of the elastic force of the locking spring; a first fixed filling block is fixedly provided on the inner wall of the right end of the locking cavity, and a propulsion accompanying block is fixedly provided on the left end of the locking shaft, and the locking spring is squeezed between the first fixed filling block and the propulsion accompanying block; a second fixed filling block is fixedly provided on the inner wall of the left end of the locking cavity, and the second fixed filling block can contact with the propulsion accompanying block to limit the position, and when the second fixed filling block contacts with the propulsion accompanying block, the locking shaft is just hidden in the locking cavity.

[0027] Further configuration is: a third fixed filling block is fixedly arranged between the upper end of the second fixed filling block and the inner wall of the locking cavity; a missing corner is provided on the left side of the upper end of the propulsion accompanying block, and the missing corner cooperates with the third fixed filling block to form a propulsion inner cavity; gas can be fed into the propulsion inner cavity through the power unit, and the propulsion inner cavity will expand after being filled with gas, thereby pushing the locking shaft to move right; a recessed groove is provided on the left side of the water pressure sensor; when the water pressure sensor is inserted into the water pressure mounting seat, the locking shaft can move right and be pressed into the recessed groove to achieve locking of the water pressure sensor;

[0028] The inner wall of the first fixed filling block is fixedly provided with a first positioning block by screwing, and a through hole is provided in the first positioning block for the locking shaft to extend out of the locking cavity; the right end of the advancing accompanying block is fixedly provided with a second positioning block, and the locking spring is located at the outer periphery of the first positioning block and the second positioning block, and the first positioning block and the second positioning block can touch each other to prevent the locking spring from being over-pressurized and losing its elastic force.

[0029] Further configuration is that: the power unit comprises a power base and a power cover respectively fixed to the installation area by screws, and a gas inlet hole is opened at the upper end of the power cover, and gas can be filled into the propulsion cavity through the gas inlet hole;

[0030] The power base and the power top cover form a power cavity in the installation area. A power shaft and a sealing spring are arranged in the power cavity. The power shaft will keep the gas inlet hole closed under the elastic force of the sealing spring.

[0031] Further configuration is: a sealing pad is fixedly arranged at the upper end of the power shaft, a spacing channel is formed between the left end of the sealing pad and the left wall of the power top cover, an inner guide hole is opened in the power shaft and is located below the spacing channel, the upper end of the inner guide hole is connected to the spacing channel, and the lower end is connected to the power chamber; the power shaft moves up under the elastic force of the sealing spring, so that the sealing pad touches the upper wall of the power top cover, thereby isolating the gas from entering the hole and the spacing channel;

[0032] An upper end hole connected to the locking cavity is provided at the upper end of the locking shell, and a connecting inner cavity connecting the power cavity and the upper end hole is provided inside the water pressure mounting seat.

[0033] A further configuration is that the power top cover has an air intake guide section, the air intake guide section is located above the sealing gasket, there is always an air intake gap between the lower end of the air intake guide section and the upper end of the sealing gasket, and the gas inlet hole is located on the right side of the air intake gap and is connected to the air intake gap; as the gas continuously fills into the air intake gap, the sealing gasket will be pushed downward, thereby connecting the gas inlet hole and the gap channel.

[0034] A further configuration is that a release inner hole is opened in the power top cover, a press-release block is fixedly arranged on the upper end of the power shaft, and the press-release block extends upward out of the release inner hole; by pressing the press-release block downward, the gas inlet hole and the spacing channel can be manually connected, thereby smoothly releasing the gas in the propulsion cavity.

[0035] Further configuration is: a downwardly sunken groove is provided at the upper end of the power base, a sealing seat is fixedly provided in the sunken groove, a sealed inner cavity is provided in the sealing seat, a sealing shaft is fixedly provided at the lower end of the power shaft, the sealing shaft extends downward, and its lower end is always located in the sealed inner cavity; the sealing shaft can cooperate with the sealing seat to form a sealed chamber, the sealed chamber is located on the right side of the sealing shaft, and the sealing spring is located in the sealed chamber;

[0036] An upper resistance plate and a lower resistance plate are fixedly provided at the lower end of the power shaft and the upper end of the power base respectively. The upper resistance plate and the lower resistance plate are both located in a sealed chamber. The sealing spring is located at the outer periphery of the upper resistance plate and the lower resistance plate. The upper resistance plate and the lower resistance plate can touch each other to prevent the sealing spring from being over-pressurized and losing its elastic force.

[0037] A further configuration is that a sealing ring capable of contacting a water pressure sensor inserted into the upper mounting groove is arranged in the water pressure mounting seat.

[0038] The present invention has the following beneficial effects:

[0039] 1. The structure of the water pressure sensor is optimized in the present invention. The water pressure mounting seat is fixedly connected to the water injection branch pipe. The water pressure mounting seat is used as an installation carrier for the water pressure sensor to be assembled. The water pressure sensor can be inserted into the water pressure mounting seat and then locked by the locking unit, which ensures the stability of the water pressure sensor after assembly. At this time, the water pressure sensor will extend into the inner flow channel to realize water pressure monitoring. The power unit can not only provide power for the locking unit, but also cancel the power supply at any time when the water pressure sensor needs to be removed. The actual operation is very convenient. It replaces the traditional screw fixing method, and there is no need to use tools such as screwdrivers, which effectively improves the assembly efficiency and convenience of the water pressure sensor. At the same time, it will not be corroded or loosened, and has good stability. In addition, it provides convenience for the subsequent regular maintenance and replacement of the water pressure sensor.

[0040] 2. In the present invention, the power source of the power unit is gas, and the locking unit is driven by gas filling. At the same time, the power unit can automatically seal after the gas is filled into the locking unit to prevent gas leakage, thereby allowing the locking unit to maintain the action of locking the water pressure sensor; when the water pressure sensor needs to be removed, it is only necessary to release the gas in the locking unit, and the actual operation is very convenient.

[0041] 3. In the present invention, the water pressure sensor is inserted into the upper mounting groove, and the initial state of the locking shaft is hidden in the locking cavity under the action of the elastic force of the locking spring; the second fixed filling block can contact the advancing accompanying block to limit the locking shaft.

[0042] 4. In the present invention, the setting of the third fixed filling block can cooperate with the missing corner of the propulsion companion block to form a propulsion cavity. The propulsion cavity can expand after being filled with gas to push the locking shaft to the right and press it into the recessed groove to achieve locking of the water pressure sensor; the first positioning block and the second positioning block can not only touch each other to limit the locking shaft, but also prevent the locking spring from being over-pressurized and losing its elastic force.

[0043] 5. In the present invention, the power chamber in the power unit is provided with a power shaft and a sealing spring, and the initial state of the power shaft is to keep the gas inlet hole closed under the action of the elastic force of the sealing spring.

[0044] 6. In the present invention, the arrangement of the intermediate channel and the inner guide hole can connect the gas inlet hole and the power chamber. The power chamber is connected to the upper end hole through the connecting inner cavity, and the upper end hole is connected to the propulsion inner cavity, so that the gas can be smoothly filled into the propulsion inner cavity from the gas inlet hole.

[0045] 7. In the present invention, the air intake gap between the air intake guide section and the sealing gasket can smoothly receive the gas filled in the gas inlet hole to push the sealing gasket downward, thereby connecting the gas inlet hole and the spacing channel; when the gas inlet hole is not filled with gas, the power shaft can automatically move upward, so that the sealing gasket touches the upper wall of the power top cover, thereby isolating the gas inlet hole and the spacing channel.

[0046] 8. In the present invention, by pressing the release block downward, the gas inlet hole and the spacing channel can be manually connected, thereby smoothly releasing the gas in the propulsion cavity to achieve the purpose of rapid exhaust.

[0047] 9. In the present invention, a sealed chamber can be formed by the sealing shaft and the sealing seat, and the sealing spring is located in the sealed chamber, thereby preventing the gas in the inner guide hole from leaking into the sealed chamber, thereby avoiding excessive gas in the sealed chamber, which causes the power shaft to be unable to move downward.

[0048] 10. The provision of the sealing ring in the present invention can improve the sealing performance of the water pressure sensor inserted into the upper mounting groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a structural schematic diagram of an embodiment;

[0050] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0051] Figure 3 for Figure 2 Enlarged view of middle part B;

[0052] Figure 4 for Figure 3 Enlarged view of part C in the middle.

[0053] In the figure: 11, water injection main pipe; 12, filter; 13, water injection branch pipe; 14, wellhead device; 15, flow control valve; 16, intelligent control unit; 21, water pressure mounting seat; 22, water pressure sensor; 23, inner flow channel; 24, upper mounting groove; 241, recessed groove; 25, installation area; 31, locking shell; 32, locking extension block; 33, locking cavity; 34, locking shaft; 35, locking spring; 36, first fixed filling block; 361, first positioning block; 3611, perforation; 37, propulsion accompanying block; 371, second positioning block; 38, second fixed filling block; 39, third fixed filling block; 41, push Into the inner cavity; 42, upper end hole; 51, power base; 52, power top cover; 53, gas inlet hole; 54, power cavity; 55, power shaft; 56, sealing spring; 61, sealing gasket; 62, spacing channel; 63, inner guide hole; 64, connecting inner cavity; 71, air intake guide section; 72, air intake gap; 73, release inner hole; 74, press release block; 751, sunken groove; 752, sealing seat; 753, sealed inner cavity; 754, sealing shaft; 76, sealed chamber; 771, upper baffle plate; 772, lower baffle plate; 81, sealing ring; 91, inflation branch pipe; 92, inflation pipeline; 93, electric pump; 94, control valve. DETAILED DESCRIPTION

[0054] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0055] As attached Figures 1 to 4 As shown;

[0056] The present embodiment discloses a flow distribution device for intelligent injection, comprising a water injection main pipe 11, a filter 12 is arranged on the water injection main pipe 11, three sections of water injection branch pipes 13 are connected to the water injection main pipe 11, and the three sections of water injection branch pipes 13 are respectively connected to oil layer parts with different permeabilities in a wellhead device 14; the three sections of water injection branch pipes 13 are all fixed by bolts with a hydraulic pressure mounting seat 21, a flow regulating valve 15 and an intelligent control unit 16;

[0057] A water pressure sensor 22 is mounted on the water pressure mounting seat 21, and the water pressure sensor 22 and the flow regulating valve 15 are electrically connected to the intelligent control unit 16 respectively;

[0058] The water pressure sensor 22 and the water pressure mounting seat 21 are connected detachably by plugging; the water pressure mounting seat 21 has an inner flow channel 23 connected to the corresponding water injection branch pipe 13. After the water pressure sensor 22 and the water pressure mounting seat 21 are plugged, the water pressure sensor 22 will extend into the inner flow channel 23 to realize water pressure monitoring;

[0059] A locking unit and a power unit are provided in the water pressure mounting seat 21. The locking unit can execute the action of locking the water pressure sensor 22 so that the water pressure sensor 22 can be stably inserted into the water pressure mounting seat 21; the power unit can not only provide power for the locking unit to execute the action of locking the water pressure sensor 22, but also cancel the power supply to allow the locking unit to release the action of locking the water pressure sensor 22.

[0060] Among them, the power unit uses gas as a power source, and the locking unit is a pneumatic structure. After receiving the gas, the locking unit will execute the action of locking the water pressure sensor 22; the power unit can automatically seal after the gas is filled into the locking unit to prevent gas leakage, thereby allowing the locking unit to maintain the action of locking the water pressure sensor 22;

[0061] The power unit cancels the power supply by releasing the gas in the locking unit.

[0062] Among them, an upper end mounting groove 24 for inserting a water pressure sensor 22 is provided at the upper end of the water pressure mounting seat 21; an installation area 25 is provided in the water pressure mounting seat 21, and the locking unit includes a locking shell 31 located in the installation area 25, and a locking expansion block 32 is fixedly provided at the upper and lower ends of the locking shell 31, and the locking expansion block 32 is fixed to the installation area 25 by screws;

[0063] A locking cavity 33 is defined in the locking shell 31, in which a locking shaft 34 and a locking spring 35 are arranged. The locking shaft 34 will be hidden in the locking cavity 33 under the action of the elastic force of the locking spring 35; a first fixed filling block 36 is fixedly provided on the inner wall at the right end of the locking cavity 33, and a thrust accompanying block 37 is fixedly provided on the left end of the locking shaft 34, and the locking spring 35 is squeezed between the first fixed filling block 36 and the thrust accompanying block 37; a second fixed filling block 38 is fixedly provided on the inner wall at the left end of the locking cavity 33, and the second fixed filling block 38 can contact with the thrust accompanying block 37 to limit the position, and when the second fixed filling block 38 contacts with the thrust accompanying block 37, the locking shaft 34 is just hidden in the locking cavity 33.

[0064] Among them, a third fixed filling block 39 is fixedly arranged between the upper end of the second fixed filling block 38 and the inner wall of the locking cavity 33, and a missing corner is provided on the left side of the upper end of the propulsion accompanying block 37, and the missing corner cooperates with the third fixed filling block 39 to form a propulsion cavity 41; gas can be fed into the propulsion cavity 41 through the power unit, and the propulsion cavity 41 will expand after being filled with gas, thereby pushing the locking shaft 34 to move right; a recessed groove 241 is provided on the left side of the water pressure sensor 22; when the water pressure sensor 22 is inserted into the water pressure mounting seat 21, the locking shaft 34 can move right and be pressed into the recessed groove 241 to achieve locking of the water pressure sensor 22;

[0065] A first positioning block 361 is screwed and fixed to the inner wall of the first fixed filling block 36, and a through hole 3611 is provided in the first positioning block 361 for the locking shaft 34 to extend out of the locking cavity 33; a second positioning block 371 is fixed to the right end of the advancing companion block 37, and the locking spring 35 is located at the outer periphery of the first positioning block 361 and the second positioning block 371. The first positioning block 361 and the second positioning block 371 can touch each other to prevent the locking spring 35 from being over-pressurized and losing its elastic force.

[0066] The power unit includes a power base 51 and a power cover 52 respectively fixed to the mounting area 25 by screws. A gas inlet hole 53 is provided at the upper end of the power cover 52, and gas can be filled into the propulsion cavity 41 through the gas inlet hole 53.

[0067] The power base 51 and the power top cover 52 form a power cavity 54 in the installation area 25. A power shaft 55 and a sealing spring 56 are provided in the power cavity 54. The power shaft 55 will keep the gas inlet hole 53 closed under the elastic force of the sealing spring 56.

[0068] Among them, a sealing pad 61 is fixedly arranged at the upper end of the power shaft 55, and a spacing channel 62 is formed between the left end of the sealing pad 61 and the left wall of the power top cover 52. An inner guide hole 63 located below the spacing channel 62 is opened in the power shaft 55, and the upper end of the inner guide hole 63 is connected to the spacing channel 62, and the lower end is connected to the power chamber 54; the power shaft 55 moves up under the elastic force of the sealing spring 56, so that the sealing pad 61 touches the upper wall of the power top cover 52, thereby isolating the gas from entering the hole 53 and the spacing channel 62;

[0069] An upper end hole 42 connected to the locking cavity 33 is formed at the upper end of the locking shell 31 , and a connecting inner cavity 64 connecting the power cavity 54 and the upper end hole 42 is formed inside the hydraulic pressure mounting seat 21 .

[0070] Among them, the power top cover 52 has an air intake guide section 71, which is located above the sealing gasket 61. There is always an air intake gap 72 between the lower end of the air intake guide section 71 and the upper end of the sealing gasket 61. The gas inlet hole 53 is located on the right side of the air intake gap 72 and is connected to the air intake gap 72; as the gas continuously fills into the air intake gap 72, it will push the sealing gasket 61 downward, thereby connecting the gas inlet hole 53 and the spacing channel 62.

[0071] Among them, a release inner hole 73 is opened in the power top cover 52, and a press-release block 74 is fixedly arranged on the upper end of the power shaft 55, and the press-release block 74 extends upward from the release inner hole 73; by pressing the press-release block 74 downward, the gas inlet hole 53 and the spacing channel 62 can be manually connected, thereby smoothly releasing the gas in the propulsion cavity 41.

[0072] Among them, a downwardly sunken groove 751 is provided at the upper end of the power base 51, a sealing seat 752 is fixedly provided in the sunken groove 751, a sealing inner cavity 753 is provided in the sealing seat 752, a sealing shaft 754 is fixedly provided at the lower end of the power shaft 55, the sealing shaft 754 extends downward, and its lower end is always located in the sealing inner cavity 753; the sealing shaft 754 can cooperate with the sealing seat 752 to form a sealing chamber 76, the sealing chamber 76 is located on the right side of the sealing shaft 754, and the sealing spring 56 is located in the sealing chamber 76;

[0073] An upper resistance plate 771 and a lower resistance plate 772 are fixedly provided at the lower end of the power shaft 55 and the upper end of the power base 51 respectively. The upper resistance plate 771 and the lower resistance plate 772 are both located in the sealing chamber 76. The sealing spring 56 is located at the outer periphery of the upper resistance plate 771 and the lower resistance plate 772. The upper resistance plate 771 and the lower resistance plate 772 can touch each other to prevent the sealing spring 56 from being over-pressurized and losing its elastic force.

[0074] The water pressure mounting seat 21 is provided with a sealing ring 81 which can contact the water pressure sensor 22 inserted into the upper mounting groove 24 .

[0075] It should be supplemented that each gas inlet hole 53 is connected to an inflation branch pipe 91 , and each inflation branch pipe 91 is interconnected to form an internal common inflation pipeline 92 . The input end of the inflation pipeline 92 is connected to an external electric pump 93 , and the electric pump 93 can generate gas and fill it into the inflation pipeline 92 .

[0076] Each inflation branch pipe 91 is provided with a control valve 94 for controlling its own on-off so as to realize individual control; the control valve 94 can be an electrically controlled control valve, and can be electrically connected to the PLC together with the electric pump 93 to realize centralized control.

[0077] The working principle of this embodiment is:

[0078] Need to explain:

[0079] 1. The initial state of the locking shaft 34 is that it is hidden in the locking cavity 33 under the elastic force of the locking spring 35 , and the locking shaft 34 will not hinder the water pressure sensor 22 from being inserted downward into the upper mounting groove 24 .

[0080] 2. The initial state of the power shaft 55 is to move upward under the elastic force of the sealing spring 56, so that the sealing pad 61 contacts the upper wall of the power top cover 52, thereby maintaining the state of isolating the gas inlet hole 53 and the spacing channel 62.

[0081] When installing the water pressure sensor 22;

[0082] 1. Insert the water pressure sensor 22 downward into the upper mounting groove 24. The sealing ring 81 will contact the water pressure sensor 22 to ensure sealing. At the same time, the water pressure sensor 22 will extend into the inner flow channel 23 to realize water pressure monitoring.

[0083] 2. The position of the recessed groove 241 on the water pressure sensor 22 corresponds exactly to the through hole 3611 in the first positioning block 361; the inflation pipeline 92 on the external electric pump 93 is connected to the gas inlet hole 53, and the electric pump 93 is turned on, so that the gas can be filled into the corresponding gas inlet hole 53, and then filled into the air intake gap 72. After the air intake gap 72 successfully receives the filled gas, it will push the sealing gasket block 61 to move downward, so that the gas inlet hole 53 and the spacing channel 62 are connected; then, the gas is filled into the propulsion cavity 41 after passing through the spacing channel 62, the inner guide hole 63, the power cavity 54, the connecting cavity 64, and the upper end hole 42; the propulsion cavity 41 can expand after being filled with gas to push the locking shaft 34 to move right and press it into the recessed groove 241 to achieve locking of the water pressure sensor 22.

[0084] 3. Turn off the electric pump 93. The power shaft 55 moves upward under the elastic force of the sealing spring 56, so that the sealing pad 61 contacts the upper wall of the power top cover 52, thereby keeping the gas entry hole 53 and the spacing channel 62 blocked, and the gas in the inner cavity 41 will not leak. The locking shaft 34 can remain pressed into the recessed groove 241, and the water pressure sensor 22 is stably locked in the upper end mounting groove 24.

[0085] When the water pressure sensor 22 is removed;

[0086] By pressing the release block 74 downward, the gas inlet hole 53 and the spacer 62 can be manually connected, thereby smoothly releasing the gas in the propulsion cavity 41 to achieve the purpose of rapid exhaust. Then, the locking shaft 34 will be hidden in the locking cavity 33 under the elastic force of the locking spring 35, and the operator can smoothly and easily pull out the water pressure sensor 22 upward. The removal method of the water pressure sensor 22 is simple and convenient, which provides convenience for the maintenance and replacement of the water pressure sensor 22.

[0087] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. An intelligent flow water distribution device, characterized in that: The invention comprises a water injection main pipe (11), the water injection main pipe (11) is provided with a filter (12), the water injection main pipe (11) is connected with three sections of water injection branch pipes (13), the three sections of the water injection branch pipes (13) are respectively connected to oil layer parts with different permeabilities in a wellhead device (14); the three sections of the water injection branch pipes (13) are provided with a water pressure mounting seat (21), a flow regulating valve (15) and an intelligent control unit (16) fixed by bolts; The water pressure mounting seat (21) is equipped with a water pressure sensor (22), and the water pressure sensor (22) and the flow regulating valve (15) are electrically connected to the intelligent control unit (16) respectively; The water pressure sensor (22) and the water pressure mounting seat (21) are connected in a detachable manner by plugging; the water pressure mounting seat (21) has an inner flow channel (23) connected to the corresponding water injection branch pipe (13); after the water pressure sensor (22) and the water pressure mounting seat (21) are plugged together, the water pressure sensor (22) will extend into the inner flow channel (23) to realize water pressure monitoring; The water pressure mounting seat (21) is provided with a locking unit and a power unit. The locking unit can execute the action of locking the water pressure sensor (22) so that the water pressure sensor (22) can be stably plugged into the water pressure mounting seat (21); the power unit can not only provide power for the locking unit to execute the action of locking the water pressure sensor (22), but also cancel the power supply so that the locking unit can release the action of locking the water pressure sensor (22); The power unit uses gas as a power source, and the locking unit is a pneumatic structure; The upper end of the water pressure mounting seat (21) is provided with an upper end mounting groove (24) for inserting the water pressure sensor (22); the water pressure mounting seat (21) is provided with a mounting area (25), and the locking unit includes a locking shell (31) located in the mounting area (25); A locking cavity (33) is provided in the locking shell (31), a locking shaft (34) and a locking spring (35) are provided in the locking cavity (33), and the locking shaft (34) is hidden in the locking cavity (33) under the action of the elastic force of the locking spring (35); A recessed groove (241) is provided on the left side of the water pressure sensor (22).

2. The intelligent flow distribution device according to claim 1 is characterized in that: The locking unit will execute the action of locking the water pressure sensor (22) after receiving the gas; the power unit can automatically seal after the gas is filled into the locking unit to prevent gas leakage, thereby allowing the locking unit to continue to execute the action of locking the water pressure sensor (22); The power unit cancels power supply by releasing the gas in the locking unit.

3. The intelligent flow distribution device according to claim 2 is characterized in that: The locking shell (31) is fixedly provided with a locking expansion block (32) at the upper end and the lower end, and the locking expansion block (32) is fixed to the installation area (25) by screws; A first fixed filling block (36) is fixedly arranged on the inner wall at the right end of the locking cavity (33), a propulsion accompanying block (37) is fixedly arranged on the left end of the locking shaft (34), and the locking spring (35) is squeezed between the first fixed filling block (36) and the propulsion accompanying block (37); a second fixed filling block (38) is fixedly arranged on the inner wall at the left end of the locking cavity (33), and the second fixed filling block (38) can contact with the propulsion accompanying block (37) to limit the position, and when the second fixed filling block (38) contacts with the propulsion accompanying block (37), the locking shaft (34) is just hidden in the locking cavity (33).

4. The intelligent flow distribution device according to claim 3 is characterized in that: A third fixed filling block (39) is fixedly arranged between the upper end of the second fixed filling block (38) and the inner wall of the locking cavity (33); a missing corner is provided on the left side of the upper end of the propulsion companion block (37); the missing corner cooperates with the third fixed filling block (39) to form a propulsion cavity (41); gas can be introduced into the propulsion cavity (41) through the power unit, and the propulsion cavity (41) will expand after being filled with gas, thereby pushing the locking shaft (34) to move rightward; when the water pressure sensor (22) is inserted into the water pressure mounting seat (21), the locking shaft (34) can move rightward and be pressed into the recessed groove (241) to achieve locking of the water pressure sensor (22); The inner wall of the first fixed filling block (36) is fixedly provided with a first positioning block (361) by screwing, and the first positioning block (361) is provided with a through hole (3611) for the locking shaft (34) to extend out of the locking cavity (33); the right end of the advancing accompanying block (37) is fixedly provided with a second positioning block (371), and the locking spring (35) is located on the outer periphery of the first positioning block (361) and the second positioning block (371), and the first positioning block (361) and the second positioning block (371) can touch each other to prevent the locking spring (35) from being over-pressurized and losing its elastic force.

5. The intelligent flow distribution device according to claim 4 is characterized in that: The power unit comprises a power base (51) and a power cover (52) respectively fixed to the mounting area (25) by screws, and a gas inlet hole (53) is provided at the upper end of the power cover (52), through which gas can be filled into the propulsion cavity (41); The power base (51) and the power top cover (52) form a power cavity (54) in the installation area (25). A power shaft (55) and a sealing spring (56) are arranged in the power cavity (54). The power shaft (55) will keep the gas inlet hole (53) closed under the elastic force of the sealing spring (56).

6. The intelligent flow distribution device according to claim 5, characterized in that: A sealing pad (61) is fixedly arranged at the upper end of the power shaft (55), a spacing channel (62) is formed between the left end of the sealing pad (61) and the left wall of the power top cover (52), an inner guide hole (63) located below the spacing channel (62) is opened in the power shaft (55), the upper end of the inner guide hole (63) is connected to the spacing channel (62), and the lower end is connected to the power chamber (54); the power shaft (55) moves upward under the elastic force of the sealing spring (56), so that the sealing pad (61) contacts the upper wall of the power top cover (52), thereby isolating the gas from entering the hole (53) and the spacing channel (62); The locking shell (31) has an upper end hole (42) connected to the locking cavity (33) at its upper end, and the water pressure mounting seat (21) has a connecting inner cavity (64) connecting the power cavity (54) and the upper end hole (42) inside.

7. The intelligent flow distribution device according to claim 6, characterized in that: The power top cover (52) has an air intake guide section (71), and the air intake guide section (71) is located above the sealing gasket (61). An air intake gap (72) is always provided between the lower end of the air intake guide section (71) and the upper end of the sealing gasket (61). The gas inlet hole (53) is located on the right side of the air intake gap (72) and is connected to the air intake gap (72). As the gas continuously fills into the air intake gap (72), the sealing gasket (61) is pushed downward, thereby connecting the gas inlet hole (53) and the spacing channel (62).

8. The intelligent flow distribution device according to claim 6 is characterized in that: A release inner hole (73) is provided in the power top cover (52), and a press-release block (74) is fixedly provided on the upper end of the power shaft (55), and the press-release block (74) extends upward out of the release inner hole (73); by pressing the press-release block (74) downward, the gas inlet hole (53) and the spacing channel (62) can be manually connected, thereby smoothly releasing the gas in the propulsion cavity (41).

9. The intelligent flow distribution device according to claim 6, characterized in that: The upper end of the power base (51) is provided with a downwardly sunken groove (751), a sealing seat (752) is fixedly arranged in the sunken groove (751), a sealing inner cavity (753) is arranged in the sealing seat (752), a sealing shaft (754) is fixedly arranged at the lower end of the power shaft (55), the sealing shaft (754) extends downward, and its lower end is always located in the sealing inner cavity (753); the sealing shaft (754) can cooperate with the sealing seat (752) to form a sealing chamber (76), the sealing chamber (76) is located on the right side of the sealing shaft (754), and the sealing spring (56) is located in the sealing chamber (76); An upper resistance plate (771) and a lower resistance plate (772) are fixedly provided at the lower end of the power shaft (55) and the upper end of the power base (51), respectively. The upper resistance plate (771) and the lower resistance plate (772) are both located in the sealing chamber (76). The sealing spring (56) is located on the outer periphery of the upper resistance plate (771) and the lower resistance plate (772). The upper resistance plate (771) and the lower resistance plate (772) can touch each other to prevent the sealing spring (56) from losing its elastic force due to overpressure.

10. The intelligent flow distribution water distribution device according to claim 3, characterized in that: The water pressure mounting seat (21) is provided with a sealing ring (81) capable of contacting the water pressure sensor (22) inserted into the upper mounting groove (24).

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