An intelligent injection dispenser with a differential pressure flowmeter having a double throttling channel

Abstract

The present application relates to an intelligent injection dispenser with a differential pressure flowmeter having a double throttling channel, which includes an upper joint, an outer casing, an inner casing, a sensor assembly and a nozzle assembly; one end of the outer casing is connected to the upper joint, and the other end is connected to a lower joint; the inner casing is nested inside the outer casing, and the gap formed by the mutual nesting of the inner casing and the outer casing forms an annular cavity. One end of the inner casing is connected to the upper joint, and the other end is connected to the lower joint; the sensor assembly is arranged in the annular cavity and is located on the lower joint; the nozzle assembly is arranged in the annular cavity and is located on the lower joint. In the present application, precise measurement from a small flow rate to a large flow rate can be achieved through a first adjustment hole and a second adjustment hole, solving the problem of reduced accuracy of traditional differential pressure flowmeters during small flow rate measurement, and at the same time avoiding the trouble of limited range ratio.

Description

Technical Field

[0001] This application belongs to the technical field of oilfield stratified water injection, and specifically relates to an intelligent water injection allocator with a differential pressure flowmeter having a double throttling channel. Background Art

[0002] In the field of oil extraction, improving the oil recovery rate of oilfields has always been the focus of technological innovation. In recent years, with the rapid development of intelligent technologies, the fourth-generation intelligent stratified water injection technology has emerged. This technology significantly improves the oil recovery efficiency of oilfields by achieving fine control and automatic control of the stratified injection volume, as well as real-time monitoring of downhole parameters such as temperature, pressure, and flow rate.

[0003] As the core tool of this technology, the intelligent water injection allocator plays a crucial role in the process of stratified water injection. Currently, the common intelligent water injection allocators on the market mainly use orifice plate type or electromagnetic flowmeters for flow measurement. Among them, the electromagnetic flowmeter is favored due to its large range ratio and high measurement accuracy. However, during long-term downhole operation, the measurement electrodes of the electromagnetic flowmeter are easily affected by contamination and scaling, resulting in a decrease in measurement accuracy, and in severe cases, it may even be unable to work properly. In addition, the cost of the electromagnetic flow type intelligent water injection allocator is relatively high, which is not conducive to large-scale promotion and application.

[0004] Differential pressure flowmeters have the advantages of simple structure and accurate measurement, but the range ratio of differential pressure flowmeters is relatively small, which limits their application in certain specific scenarios. Taking the Changqing Oilfield as an example, the water injection volume of this oilfield is generally within 50 cubic meters per day, while the measurement range of common differential pressure flowmeters is usually 5 - 50 cubic meters per day. Although this range basically meets most water injection requirements, when dealing with small flow rates below 5 cubic meters per day, the measurement accuracy of the differential pressure flowmeter will be affected. At the same time, due to the working principle limitation of the differential pressure flowmeter, reducing the measurement lower limit often leads to a decrease in the measurement upper limit, bringing many inconveniences to on-site use.

[0005] Based on the above problems, this application proposes an intelligent water injection allocator with a differential pressure flowmeter having a double throttling channel. Summary of the Invention

[0006] The purpose of this application is to provide an intelligent water injection allocator with a differential pressure flowmeter having a double throttling channel.

[0007] In order to achieve the above purpose, the technical solution adopted in this application is as follows:

[0008] An intelligent water injection allocator with a differential pressure flowmeter having a double throttling channel, comprising:

[0009] An upper joint;

[0010] An outer protection cylinder, one end of the outer protection cylinder is connected to the upper joint, and the other end of the outer protection cylinder is connected with a lower joint;

[0011] The inner casing is nested inside the outer casing. The gap formed by the mutual nesting of the inner casing and the outer casing forms an annular cavity. One end of the inner casing is connected to the upper joint, and the other end of the inner casing is connected to the lower joint;

[0012] The sensor assembly is arranged in the annular cavity and is located on the lower joint;

[0013] The water nozzle assembly is arranged in the annular cavity and is located on the lower joint.

[0014] In one embodiment, an upper cable head mounting position is provided on the upper end face of the upper joint. A first cable head is arranged on the upper cable head mounting position. The first cable head is connected to the upper-layer instrument and the ground controller through a cable; a lower cable head mounting position is provided on the lower end face of the lower joint. A second cable head is arranged on the lower cable head mounting position. The second cable head is connected to the lower-layer instrument through a cable.

[0015] In one embodiment, an upper bus seal plug is provided on the lower end face of the upper joint, and a lower bus seal plug is provided on the upper end face of the lower joint. The cable core of the cable at the upper cable head mounting position passes through the inside of the upper joint and is sequentially connected to the upper bus seal plug and the lower bus seal plug, and passes through the inside of the lower joint and is connected to the cable core of the cable at the lower cable head mounting position.

[0016] In one embodiment, the sensor assembly includes a post-hole pressure sensor, an inner-side pressure sensor, and an outer-side pressure sensor; the post-hole pressure sensor, the inner-side pressure sensor, and the outer-side pressure sensor are all arranged on the upper end face of the lower joint. A control circuit assembly is provided above the inner-side pressure sensor. The control circuit assembly is connected to a branch line branched from the cable core inside the lower joint;

[0017] The post-hole pressure sensor, the inner-side pressure sensor, and the outer-side pressure sensor are all connected to the control circuit assembly, and the control circuit assembly is connected to the ground controller.

[0018] In one embodiment, the water nozzle assembly includes a water inlet joint, an outer tube, and a sealing joint;

[0019] The water inlet joint is communicated with the inside of the inner casing. The outer tube is connected to the upper end of the water inlet joint. The sealing joint is connected to the upper end of the outer tube. A driving assembly is arranged on the sealing joint.

[0020] In one embodiment, a throttle orifice plate is arranged inside the water inlet joint, and a post-hole pressure hole is arranged on the water inlet joint.

[0021] In one embodiment, a water nozzle water outlet is arranged on the outer tube. The water nozzle water outlet is aligned with the hole position of the water injection hole on the lower joint. A thrust rod is arranged inside the outer tube. The thrust rod is in transmission connection with the driving assembly. A core rod is arranged on the thrust rod.

[0022] In one embodiment, a valve sleeve is further provided inside the outer tube. The valve sleeve is provided with a first adjustment hole and a second adjustment hole. The aperture of the first adjustment hole is smaller than that of the second adjustment hole. An impact-proof plate is provided at the front end of the thrust rod. When the thrust rod drives the impact-proof plate to move up and down, the impact-proof plate closes or opens the first adjustment hole and the second adjustment hole.

[0023] In one embodiment, the drive assembly includes a stroke bracket, a fully open stroke switch, a fully closed stroke switch, and a reduction motor; the stroke bracket is arranged at the upper end of the sealing joint. The fully open stroke switch, the fully closed stroke switch, and the reduction motor are arranged on the stroke bracket. A transmission lead screw is arranged inside the sealing joint. A stroke slider is sleeved on the transmission lead screw in a threaded manner. The transmission lead screw is in transmission connection with the reduction motor, and the transmission lead screw is in threaded transmission with the thrust rod.

[0024] In one embodiment, a Hall base and a magnet base are arranged on the upper part of the reduction motor; a Hall sensor is arranged on the Hall base, and a magnet is arranged on the magnet base.

[0025] Due to the adoption of the above technical solutions, the present application has the following advantages:

[0026] An intelligent water injection allocator with a differential pressure flowmeter having a double throttle channel according to the present application can achieve precise measurement from a small flow rate to a large flow rate by providing a first adjustment hole and a second adjustment hole on the water nozzle assembly, solves the problem of reduced accuracy of traditional differential pressure flowmeters during small flow rate measurement, and also avoids the trouble of limited range ratio. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of an intelligent water injection allocator with a differential pressure flowmeter having a double throttle channel according to the present application;

[0028] Figure 2 is a schematic diagram of the internal structure of an intelligent water injection allocator with a differential pressure flowmeter having a double throttle channel according to the present application;

[0029] Figure 3 is a schematic structural diagram of the water nozzle assembly of an intelligent water injection allocator with a differential pressure flowmeter having a double throttle channel according to the present application;

[0030] Figure 4 is a partial structural sectional view of the water nozzle assembly of an intelligent water injection allocator with a differential pressure flowmeter having a double throttle channel according to the present application;

[0031] Figure 5 is a schematic structural diagram of the first adjustment hole and the second adjustment hole of an intelligent water injection allocator with a differential pressure flowmeter having a double throttle channel according to the present application;

[0032] Figure 6Schematic diagram of an intelligent water injection dispenser with a differential pressure flowmeter having a dual throttling channel switched to the first adjustment orifice in the present application;

[0033] Figure 7 Schematic diagram of an intelligent water injection dispenser with a differential pressure flowmeter having a dual throttling channel switched to the second adjustment orifice in the present application.

[0034] Reference numerals are as follows: 1, upper joint; 101, upper cable head mounting position; 102, lower cable head mounting position; 103, upper bus seal plug; 104, lower bus seal plug; 105, mounting ring; 2, outer protective cylinder; 3, lower joint; 301, water injection hole; 302, instrument power supply seal plug; 4, inner protective cylinder; 5, sensor assembly; 501, post-orifice pressure sensor; 502, inner side pressure sensor; 503, outer side pressure sensor; 504, control circuit assembly; 6, nozzle assembly; 601, water inlet joint; 6011, orifice plate; 6012, post-orifice pressure hole; 6013, spacer sleeve; 6014, wire retaining ring; 602, outer tube; 6021, nozzle water outlet; 6022, thrust rod; 6023, core rod; 6024, impact plate; 6025, valve sleeve; 6026, first adjustment orifice; 6027, second adjustment orifice; 603, seal joint; 7, drive assembly; 701, stroke bracket; 702, fully open stroke switch; 703, fully closed stroke switch; 704, reduction motor; 705, transmission lead screw; 706, stroke slider; 707, Hall base; 7071, Hall sensor; 708, magnet base; 7081, magnet. Detailed implementation manners

[0035] The following will describe in detail the preferred embodiments of the present application with reference to the accompanying drawings, so as to more clearly understand the purpose, features and advantages of the present application. It should be understood that the embodiments shown in the drawings are not a limitation on the scope of the present application, but only to illustrate the essential spirit of the technical solution of the present application.

[0036] The present application provides an intelligent water injection dispenser with a differential pressure flowmeter having a dual throttling channel, as Figure 1 - Figure 2 shown, specifically including an upper joint 1, an outer protective cylinder 2, an inner protective cylinder 4, a sensor assembly 5 and a nozzle assembly 6; one end of the outer protective cylinder 2 is connected to the upper joint 1 through a mounting ring 105, and a sealing ring is provided at the connection; the other end of the outer protective cylinder 2 is threadedly connected to the lower joint 3, and a sealing ring is provided at the connection; the inner protective cylinder 4 is nested inside the outer protective cylinder 2, and the gap formed by the mutual nesting of the inner protective cylinder 4 and the outer protective cylinder 2 forms an annular cavity. One end of the inner protective cylinder 4 is inserted into the upper joint 1, and the other end is inserted into the lower joint 3. Sealing rings are provided at the insertion connections of the inner protective cylinder 4 with the upper joint 1 and the lower joint 3; the sensor assembly 5 is arranged in the annular cavity and is located on the lower joint 3; the nozzle assembly 6 is arranged in the annular cavity and is located on the lower joint 3.

[0037] In one embodiment, an upper cable head mounting position 101 is provided at the upper end of the upper joint 1. A first cable head is provided on the upper cable head mounting position 101. The first cable head is connected to an upper layer instrument and a ground controller through a single-core steel pipe cable; a lower cable head mounting position 102 is provided at the lower end of the lower joint 3. A second cable head is provided on the lower cable head mounting position 102. The second cable head is connected to a lower layer instrument through a single-core steel pipe cable. In this embodiment, data is sent to the ground controller or the upper layer instrument through the cable, and real-time control of the single-layer injection flow rate can be realized, or automatic control can be performed after setting the flow rate value.

[0038] In one embodiment, an upper bus seal plug 103 is provided on the lower end face of the upper joint 1, and a lower bus seal plug 104 is provided on the upper end face of the lower joint 3. The cable core of the cable at the upper cable head mounting position 101 passes through the inside of the upper joint 1 and is connected to the upper bus seal plug 103 and the lower bus seal plug 104, and passes through the inside of the lower joint 3 and is connected to the cable core of the lower cable head mounting position 102. An instrument power supply seal plug 302 is provided on the lower joint 3 to branch the bus inside the lower joint 3, and a branch line of the bus is connected to the instrument power supply seal plug 302 to supply power to the instruments of this layer.

[0039] In one embodiment, as Figure 2 shown, the sensor assembly 5 includes a post-hole pressure sensor 501, an inner side pressure sensor 502, and an outer side pressure sensor 503; the post-hole pressure sensor 501, the inner side pressure sensor 502, and the outer side pressure sensor 503 are all provided on the upper end face of the lower joint 3. A control circuit assembly 504 is installed at the upper end of the inner side pressure sensor 502 through a thread. The control circuit assembly 504 is connected to a branch line branched from the inside of the lower joint 3. In this embodiment, a plurality of threaded holes are machined on the upper end face of the lower joint 3. The post-hole pressure sensor 501, the inner side pressure sensor 502, and the outer side pressure sensor 503 are screwed onto the threaded holes of the lower joint 3 through threads and sealed with sealing rings. The control circuit assembly 504 is used to control the entire instrument, collect, store, and analyze the data collected by the post-hole pressure sensor 501, the inner side pressure sensor 502, and the outer side pressure sensor 503, communicate with the ground controller through a cable, and receive instructions from the ground controller.

[0040] In one embodiment, as Figure 3 - Figure 7 shown, the nozzle assembly 6 includes a water inlet joint 601, an outer tube 602, and a sealing joint 603; the water inlet joint 601 is communicated with the inside of the inner protection cylinder 4. The outer tube 602 is threadedly connected to the upper end of the water inlet joint 601. The sealing joint 603 is connected to the upper end of the outer tube 602. A driving assembly 7 is provided on the sealing joint 603.

[0041] In one embodiment, a throttling orifice plate 6011 is provided inside the water inlet joint 601, and the throttling orifice plate 6011 is fixed by a spacer 6013 and a wire retaining ring 6014. A post-hole pressure hole 6012 is provided on the water inlet joint 601, and the post-hole pressure hole 6012 is used to transmit the pressure after the orifice plate is throttled to the sensor assembly. The pressure of the fluid after passing through the throttling orifice plate is measured by the post-hole pressure sensor 501; the pressure in the oil pipe, that is, the pressure before the fluid passes through the throttling orifice plate, is measured by the inner pressure sensor 502; the pressure outside the oil pipe is measured by the outer pressure sensor 503.

[0042] In one embodiment, a faucet outlet 6021 is provided on the outer tube 602, and the faucet outlet 6021 is aligned with the hole position of the water injection hole 301 on the lower joint 3. When the faucet assembly is installed, the faucet outlet 6021 and the water injection hole 301 are aligned, and water flows through the inside of the inner casing and enters the water inlet joint at the same time, and then flows out through the faucet outlet of the faucet assembly. The faucet outlet is aligned with the water injection hole, and water flows out from the water injection hole; a thrust rod 6022 is provided inside the outer tube 602, and the thrust rod 6022 is transmission-connected to the driving assembly 7, and a core rod 6023 is provided on the thrust rod 6022, and the core rod 6023 is threadedly installed on the thrust rod 6022, and the core rod 6023 is inserted into the throttling orifice plate 6011 and is movably connected to the throttling orifice plate 6011.

[0043] Furthermore, the front end of the core rod 6023 inserted into the throttling orifice plate 6011 is configured to be spherical, and the diameter of the sphere is slightly smaller than the diameter of the throttling orifice plate 6011 .

[0044] In one embodiment, a valve sleeve 6025 is further provided inside the outer tube 602, and a first adjusting hole 6026 and a second adjusting hole 6027 are provided on the valve sleeve 6025. The aperture of the first adjusting hole 6026 is smaller than the aperture of the second adjusting hole 6027. A bumper plate 6024 is provided at the front end of the thrust rod 6022. When the thrust rod 6022 drives the bumper plate 6024 to move up and down, the bumper plate 6024 closes or opens the first adjusting hole 6026 and the second adjusting hole 6027. The bumper plate 6024 changes the flow area of the first adjusting hole 6026 and the second adjusting hole 6027 on the valve sleeve 6025 by closing or opening the first adjusting hole 6026 and the second adjusting hole 6027, thereby realizing the flow measurement and adjustment. The bumper plate 6024 can also be used to resist water erosion. In this embodiment, two throttling channels, the first regulating hole and the second regulating hole, are provided to measure differential pressure flow corresponding to different injection flow rates. Meanwhile, only one reduction motor is required as a driving element, and the direction of the water injection channel will not change.

[0045] As a preference, the first adjustment hole 6026 is a small-volume adjustment hole, and the first adjustment hole 6026 is in the shape of an elongated strip with a width of 1.5 mm, corresponding to small-volume adjustment.

[0046] As a preference, the second adjustment hole 6027 is a large discharge adjustment hole, and the shape of the second adjustment hole 6027 is triangular with a large opening, corresponding to a large discharge adjustment.

[0047] As a preference, the distance corresponding between the first adjustment hole 6026 and the second adjustment hole 6027 is exactly the distance for the core rod 6023 to completely come out of the throttle orifice plate.

[0048] Figure 6 - Figure 7 It is a schematic switching diagram of the channels of the first adjustment hole 6026 and the second adjustment hole 6027. Figure 6 In it, the outer diameter of the core rod 6023 is 4.6 mm, the throttle aperture of the throttle orifice plate 6011 is 5 mm, the core rod 6023 is inserted into the inside of the throttle orifice plate 6011, and the equivalent throttle aperture is 1.96 mm (the annular area formed by the throttle aperture of 5 mm and the outer diameter of the core rod of 4.6 mm, and the aperture of the round hole with the same annular area is approximately 1.96 mm). The actual measured starting discharge is 2 m³ / day, and the flow rate upper limit under a pressure difference of 1 MPa is 12 m³ / day. As Figure 7 shown, when the impact plate 6024 leaves the first adjustment hole 6026 (i.e., the small discharge adjustment hole) and is about to start opening the second adjustment hole 6027 (i.e., the large discharge adjustment hole), the core rod 6023 disengages from the throttle orifice plate. At this time, the throttle area is the inner diameter of the throttle orifice plate, which is 5 mm. The actual measured starting discharge is 5 m³ / day, and the flow rate upper limit under a pressure difference of 1 MPa is 50 m³ / day.

[0049] When the injection volume to be adjusted is 2 - 8 (including 8) m³ / day, the impact plate 6024 moves within the range of the first adjustment hole 6026 (i.e., the small discharge adjustment hole), and the core rod 6023 always remains inside the throttle orifice plate. When the injection volume to be adjusted is 8 - 50 (excluding 8) m³ / day, the impact plate 6024 moves within the range of the second adjustment hole 6027 (i.e., the large discharge adjustment hole), and the core rod 6023 always remains outside the throttle orifice plate.

[0050] When the water nozzle assembly performs small flow rate adjustment, the impact plate 6024 moves back and forth within the first adjustment hole 6026 (i.e., the small discharge adjustment hole), and at the same time, the core rod 6023 always remains inside the throttle orifice plate to reduce the equivalent throttle area.

[0051] When the water nozzle assembly performs large flow rate adjustment, the impact plate 6024 moves back and forth within the second adjustment hole 6027 (i.e., the large discharge adjustment hole), and at the same time, the core rod 6023 always remains at the rear end of the throttle orifice plate to increase the equivalent throttle area. In the case of blockage during small flow rate adjustment, the water nozzle outlet can be fully opened to increase the throttle area of the throttle orifice plate for flushing, allowing the blockage to pass through the throttle orifice plate smoothly. Therefore, it can relieve the blockage situation and is more reliable than the fixed orifice plate.

[0052] In one embodiment, as Figure 3As shown in the figure, the driving component 7 includes a stroke bracket 701, a fully open stroke switch 702, a fully closed stroke switch 703, and a reduction motor 704; the stroke bracket 701 is arranged at the upper end of the sealing joint 603, and the fully open stroke switch 702, the fully closed stroke switch 703, and the reduction motor 704 are arranged on the stroke bracket 701. A transmission lead screw 705 is arranged inside the sealing joint 603, and a stroke slider 706 is sleeved on the transmission lead screw 705 in a threaded manner. The transmission lead screw 705 is in transmission connection with the reduction motor 704, and the transmission lead screw 705 is in threaded transmission with the thrust rod 6022. In this embodiment, the reduction motor drives the transmission lead screw to rotate. When the transmission lead screw rotates forward and backward, the thrust rod and the stroke slider will move up and down simultaneously. When the stroke slider triggers the fully closed stroke switch, the water nozzle outlet is in the fully open state, and the over-flow flow rate is the largest; when the stroke slider triggers the fully open stroke switch, the water nozzle outlet is closed.

[0053] In one embodiment, a Hall base 707 and a magnet base 708 are arranged on the upper part of the reduction motor 704; a Hall sensor 7071 is arranged on the Hall base 707, and a magnet 7081 is bonded on the magnet base 708. The reduction motor 704 is installed at the upper end of the stroke bracket 701 through screws. The Hall sensor can detect the number of turns of the motor rotation, and then calculate the percentage of the opening degree of the water nozzle outlet.

[0054] The following is an example of the use of an intelligent injection allocator with a differential pressure flowmeter with a double throttling channel provided by this application:

[0055] Step 1: Set the parameters of the sensor component, water nozzle component, and control circuit component in the intelligent injection allocator. Connect several intelligent injection allocators after parameter setting through oil pipes, and install packers between every two intelligent injection allocators. All intelligent injection allocators are connected in series through cables. The intelligent injection allocator, oil pipe, and packer form a string, and the string is lowered into the oil well. The topmost intelligent injection allocator is connected to the ground controller through a cable.

[0056] Step 2: After the string is lowered, pressurize the entire interior of the string to set the packer.

[0057] Step 3: If the injection volume that needs to be adjusted for one of the oil layers in the oil well is 4 cubic meters per day, send an adjustment flow command to the intelligent injection allocator of the corresponding oil layer through the ground controller.

[0058] Step 4: After the intelligent injection allocator at the corresponding layer receives the command, determine whether the current anti-impact plate is located at the large flow adjustment hole (i.e., the second adjustment hole) or the small flow adjustment hole (i.e., the first adjustment hole). If the current anti-impact plate is located at the large flow adjustment hole, control the reduction motor to rotate through the ground controller, and adjust the anti-impact plate to the middle of the small flow adjustment hole, and then perform flow measurement, and enter Step 5; if the current anti-impact plate is within the range of the small flow adjustment hole, directly enter Step 5.

[0059] Step 5: Determine whether the flow rate is greater than 4 m³ / day or less than 4 m³ / day based on the measured actual injection volume, and then adjust the opening of the water nozzle outlet (i.e., make the opening smaller or larger), and then measure again until the required injection volume (including the allowable error) is adjusted within the range.

[0060] Step 6: If the required volume to be adjusted is 30 m³ / day, determine whether the current erosion shield is within the large-volume adjustment hole range. If the current erosion shield is in the small-volume adjustment hole, control the reduction motor to rotate through the ground controller, and adjust the erosion shield to the middle of the large-volume adjustment hole, and then perform flow measurement, and enter Step 7; if the current erosion shield is within the large-volume adjustment hole range, directly enter Step 7.

[0061] Step 7: Determine whether the flow rate is greater than 30 m³ / day or less than 30 m³ / day based on the measured actual injection volume, and then adjust the opening of the water nozzle outlet, and then measure again until the required injection volume (including the allowable error) is adjusted within the range.

[0062] Step 8: During small-volume injection, if the orifice plate is blocked, the ground controller issues a fully open command, moves the core rod outside the orifice plate, and at the same time opens the small-volume adjustment hole and the large-volume adjustment hole for flushing.

Claims

1. An intelligent injection allocator with a differential pressure flowmeter having a double throttling channel, characterized in that, Comprising: Upper joint (1); Outer casing (2), one end of the outer casing (2) is connected to the upper joint (1), and the other end of the outer casing (2) is connected with a lower joint (3); Inner casing (4), the inner casing (4) is nested inside the outer casing (2), the gap formed by the mutual nesting of the inner casing (4) and the outer casing (2) forms an annular cavity, one end of the inner casing (4) is connected to the upper joint (1), and the other end of the inner casing (4) is connected to the lower joint (3); Sensor assembly (5), arranged in the annular cavity and located on the lower joint (3); Water nozzle assembly (6), arranged in the annular cavity and located on the lower joint (3); The water nozzle assembly (6) includes a water inlet joint (601), an outer tube (602) and a sealing joint (603); The water inlet joint (601) is communicated with the inside of the inner casing (4), the outer tube (602) is connected to the upper end of the water inlet joint (601), the sealing joint (603) is connected to the upper end of the outer tube (602), and a driving assembly (7) is arranged on the sealing joint (603); A throttle orifice plate (6011) is arranged inside the water inlet joint (601), and a post-orifice pressure hole (6012) is arranged on the water inlet joint (601); A water nozzle outlet (6021) is arranged on the outer tube (602), the water nozzle outlet (6021) is aligned with the hole position of a water injection hole (301) on the lower joint (3), a thrust rod (6022) is arranged inside the outer tube (602), the thrust rod (6022) is in transmission connection with the driving assembly (7), and a core rod (6023) is arranged on the thrust rod (6022); A valve sleeve (6025) is further arranged inside the outer tube (602), a first adjusting hole (6026) and a second adjusting hole (6027) are arranged on the valve sleeve (6025), the aperture of the first adjusting hole (6026) is smaller than that of the second adjusting hole (6027), a shock-proof plate (6024) is arranged at the front end of the thrust rod (6022), and when the thrust rod (6022) drives the shock-proof plate (6024) to move up and down, the shock-proof plate (6024) closes or opens the first adjusting hole (6026) and the second adjusting hole (6027).

2. The intelligent water injection dispenser with a differential pressure flowmeter having a double throttling channel according to claim 1, characterized in that, An upper cable head mounting position (101) is arranged on the upper end face of the upper joint (1), a first cable head is arranged on the upper cable head mounting position (101), and the first cable head is connected to an upper-layer instrument and a ground controller through a cable; a lower cable head mounting position (102) is arranged on the lower end face of the lower joint (3), a second cable head is arranged on the lower cable head mounting position (102), and the second cable head is connected to a lower-layer instrument through a cable.

3. The intelligent injection dispenser with a differential pressure flowmeter having a double throttling channel according to claim 2, characterized in that, The lower end face of the upper joint (1) is provided with an upper bus sealing plug (103), the upper end face of the lower joint (3) is provided with a lower bus sealing plug (104), the cable core of the upper cable head mounting position (101) passes through the inside of the upper joint (1) and is sequentially connected to the upper bus sealing plug (103) and the lower bus sealing plug (104), and passes through the inside of the lower joint (3) to be connected to the cable core of the lower cable head mounting position (102).

4. The intelligent injection dispenser with a differential pressure flowmeter having a double throttling channel according to claim 3, characterized in that, The sensor assembly (5) includes a post-hole pressure sensor (501), an inner pressure sensor (502) and an outer pressure sensor (503); the post-hole pressure sensor (501), the inner pressure sensor (502) and the outer pressure sensor (503) are all arranged on the upper end face of the lower joint (3), a control circuit assembly (504) is arranged on the upper end of the inner pressure sensor (502), and the control circuit assembly (504) is connected to a branch line branched from the cable core inside the lower joint (3); The post-hole pressure sensor (501), the inner pressure sensor (502) and the outer pressure sensor (503) are all connected to the control circuit assembly (504), and the control circuit assembly (504) is connected to the ground controller.

5. The intelligent injection dispenser with a differential pressure flowmeter having a double throttling channel according to claim 1, characterized in that, The driving assembly (7) includes a travel bracket (701), a fully open travel switch (702), a fully closed travel switch (703) and a reduction motor (704); the travel bracket (701) is arranged on the upper end of the sealing joint (603), the fully open travel switch (702), the fully closed travel switch (703) and the reduction motor (704) are arranged on the travel bracket (701), a transmission lead screw (705) is arranged inside the sealing joint (603), a travel slider (706) is sleeved on the transmission lead screw (705) in a threaded manner, the transmission lead screw (705) is in transmission connection with the reduction motor (704), and the transmission lead screw (705) is in threaded transmission with the thrust rod (6022).

6. The intelligent injector with a differential pressure flowmeter having a double throttling channel according to claim 5, characterized in that, A Hall base (707) and a magnet base (708) are arranged on the upper part of the reduction motor (704); a Hall sensor (7071) is arranged on the Hall base (707), and a magnet (7081) is arranged on the magnet base (708).

Images