Wave code communication efficient coding device

Abstract

The utility model discloses a wave code communication efficient coding device which comprises a shell, a motor and a lower connector are arranged at the two ends of the shell respectively, the lower connector is connected with the shell through a valve sleeve, a pulse plate, a transmission shaft and a valve element are sequentially installed in the shell in the direction from the motor to the lower connector, and magnetic steel is installed on the end face, close to the pulse plate, of the transmission shaft. A Hall sensor is installed on the pulse plate, the transmission shaft is connected with the motor and the valve element, the valve element is arranged in the valve sleeve, openings are formed in the periphery of the valve element and the periphery of the valve sleeve, and the openings of the valve element and the magnetic steel are arranged on the same axis. The motor is directly connected with the valve core through the transmission shaft, and the motor is high in transmission efficiency, so that opening and closing time of the device is short, coding efficiency is greatly improved, and data transmission is fast.

Description

Technical Field

[0001] This utility model relates to the field of downhole instrument structure technology, specifically to a high-efficiency coding device for wavecode communication. Background Technology

[0002] With the continuous development of intelligent water injection technology in oilfields, cable-free intelligent water injection technology based on wavecode communication is being increasingly applied. Compared with cable-controlled water injection, cable-free water injection has obvious advantages such as lower cost and simpler operation process, and has become the inevitable direction for the future development of intelligent water injection in oilfields.

[0003] Cableless controlled water injection is based on wavecode communication technology. It transmits data and commands via pressure and flow waves using a specific encoding method, enabling bidirectional communication between the downhole injector and the surface. Downhole coding generates specific pressure and flow waves by switching the wellhead electrically controlled valve; the downhole injector then collects and analyzes these waveforms. Uphole coding requires the opening and closing of a coding device within the injector to generate pressure and flow waves; the wellhead pressure and flow meters collect and analyze these waveforms. Typically, the downhole injector uses an electric nozzle as the coding device, generating wavecodes by switching the nozzle on and off. However, electric nozzles, being precision-adjustable mechanisms, have slow switching action, low coding efficiency, and slow data transmission. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a high-efficiency coding device for wavecode communication, which enables rapid upward coding of downhole injectors, significantly improving wavecode communication efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-efficiency coding device for wavecode communication, comprising a housing, a motor and a lower connector respectively provided at both ends of the housing, the lower connector being connected to the housing via a valve sleeve, a pulse plate, a drive shaft and a valve core being sequentially installed inside the housing along the direction from the motor to the lower connector, a magnet being installed on the end face of the drive shaft near the pulse plate, a Hall sensor being installed on the pulse plate, the drive shaft being connected to the motor and the valve core respectively, the valve core being disposed inside the valve sleeve, both the valve core and the valve sleeve having openings around their peripheries, and the valve core opening and the magnet being arranged on the same axis.

[0006] The area of ​​the valve sleeve opening is larger than the area of ​​the valve core opening.

[0007] The magnet, valve core opening, and valve sleeve opening are all in pairs, and are all arranged symmetrically along the center.

[0008] A vehicle-type sealing ring is provided between the drive shaft and the housing.

[0009] The valve core is fitted with straightening rings at both ends.

[0010] The beneficial effects of this utility model are as follows: Compared with the prior art, the motor and valve core of this utility model are directly connected through a transmission shaft, which greatly improves the transmission efficiency compared with the traditional spiral propulsion transmission of water taps; during the coding process, when the Hall sensor on the pulse plate detects the magnetic steel pulse signal, the motor stops rotating. At this time, the coding device is in a fully open state, and a low-pressure wave is collected from the ground. The motor stop time can be set to adjust the coding waveform pulse width. In the fully closed state, no motor stop control is performed, and the high-pressure wave pulse width collected from the ground is a fixed value, which corresponds to the time when the valve sleeve blocks the valve core opening; due to the high transmission efficiency of the motor and the short opening and closing time of the device, the coding efficiency is greatly improved and the data transmission is fast. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings:

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 for Figure 1 Sectional view along direction A;

[0014] Figure 3 This is a schematic diagram of the switch state switching of this utility model;

[0015] Figure 4 for Figure 3 A schematic diagram of the ground pressure wave corresponding to the switch state;

[0016] In the diagram: 1. Housing; 2. Motor; 3. Lower connector; 4. Valve sleeve; 5. Pulse plate; 6. Drive shaft; 7. Valve core; 8. Magnet; 9. Car-type sealing ring; 10. Centralizing ring. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0018] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be selected to be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments. Example

[0019] like Figures 1 to 2As shown, this utility model provides a high-efficiency coding device for wavecode communication, including a housing 1. A motor 2 and a lower connector 3 are respectively located at both ends of the housing 1. The lower connector 3 is connected to the housing 1 via a valve sleeve 4. Inside the housing 1, a pulse plate 5, a drive shaft 6, and a valve core 7 are sequentially installed along the direction from the motor 2 towards the lower connector 3. A magnet 8 is installed on the end face of the drive shaft 6 near the pulse plate 5. A Hall sensor is installed on the pulse plate 5. The drive shaft 6 connects the motor 2 and the valve core 7. The valve core 7 is located inside the valve sleeve 4. Both the valve core 7 and the valve sleeve 4 have openings around their peripheries, and the openings of the valve core 7 and the magnet 8 are aligned on the same axis. The area of ​​the opening in the valve sleeve 4 is larger than the area of ​​the opening in the valve core 7.

[0020] Motor 2 and valve core 7 are directly connected via valve sleeve 4, which significantly improves transmission efficiency compared to traditional water nozzle spiral propulsion transmission. During coding, when the Hall sensor on pulse plate 5 detects the pulse signal of magnet 8, motor 2 stops rotating. At this time, the coding device is fully open, and low-pressure waves are collected from the ground. The stopping time of motor 2 can be set to adjust the coding waveform pulse width. In the fully closed state, no stopping control is applied to motor 2, and the high-pressure wave pulse width collected from the ground is a fixed value, which corresponds to the time when valve sleeve 4 blocks the opening of valve core 7. Due to the high transmission efficiency of the motor and the short opening and closing time of the device, the coding efficiency is greatly improved and the data transmission is fast.

[0021] Furthermore, the magnet 8, valve core 7 opening and valve sleeve 4 opening are all two, and are arranged symmetrically along the center. Since two valve core 7 openings are provided and symmetrically distributed in the 180° direction, a complete coding action can be completed within 180° during coding, and the coding efficiency is further improved.

[0022] Furthermore, for more reliable sealing, a vehicle-type sealing ring 10 is provided between the drive shaft 6 and the housing 1.

[0023] Furthermore, a centering ring 11 is fitted at both ends of the valve core 7. The valve core 7 is centered and friction is reduced by the centering rings at both ends, making the rotation smoother.

[0024] like Figures 3 to 4 As shown, the relationship between the corresponding positions of the valve core 7 opening and the valve sleeve 4 opening and the ground pressure wave is displayed. From A to B, the coding device goes from initially closed to fully closed, and the corresponding ground pressure wave gradually rises from the lowest point to the highest point. From B to C, the coding device is always in the fully closed state, and the corresponding ground pressure wave remains at the highest point. From C to D, the coding device goes from initially open to fully open, and the corresponding ground pressure wave gradually decreases from the highest point to the lowest point.

[0025] In addition to the preferred embodiments described above, there are other embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection claimed by this utility model.

Claims

1. A high-efficiency coding device for wavecode communication, characterized in that, The device includes a housing (1), with a motor (2) and a lower connector (3) at both ends. The lower connector (3) is connected to the housing (1) via a valve sleeve (4). Inside the housing (1), a pulse plate (5), a drive shaft (6), and a valve core (7) are installed sequentially along the direction from the motor (2) to the lower connector (3). A magnet (8) is installed on the end face of the drive shaft (6) near the pulse plate (5). A Hall sensor is provided on the pulse plate (5). The drive shaft (6) is connected to the motor (2) and the valve core (7) respectively. The valve core (7) is located inside the valve sleeve (4). Both the valve core (7) and the valve sleeve (4) have openings around their peripheries, and the opening of the valve core (7) and the magnet (8) are located on the same axis.

2. The high-efficiency coding device for wavecode communication according to claim 1, characterized in that, The area of ​​the opening of the valve sleeve (4) is greater than the area of ​​the opening of the valve core (7).

3. The high-efficiency coding device for wavecode communication according to claim 1, characterized in that, The magnet (8), valve core (7) opening and valve sleeve (4) opening are all two, and are arranged symmetrically along the center.

4. The high-efficiency coding device for wavecode communication according to claim 1, characterized in that, A vehicle-type sealing ring (10) is provided between the drive shaft (6) and the housing (1).

5. The high-efficiency coding device for wavecode communication according to claim 1, characterized in that, The valve core (7) is fitted with a straightening ring (11) at both ends.

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