Contact type booster ignition device

Abstract

This utility model relates to the technical field of oil and gas exploration and development equipment. Addressing the problems of insufficient reliability of wire connections in existing booster ignition devices, which affects signal transmission and results in long boosting and ignition times, it provides a contact-type booster ignition device, including a housing. The inner cavity of the housing houses a contact-type contact assembly, a booster assembly, and a controller connected by an electrical circuit. The contact-type contact assembly includes cable pin contact plates and spring pin contact plates located at the left and right ends of the housing, respectively. This device replaces the wire connection structure at both ends of a conventional booster device with a contact-type contact structure. Signal input and output are achieved through elastic point contact with structural components, ensuring the safety and stability of signal transmission, avoiding interference from radio frequency and stray currents, reducing the risk of poor contact, ensuring the stability of the ignition frequency, and providing higher safety. Furthermore, the contact-type structure increases the arc length, improving ignition efficiency and increasing response speed.

Description

Technical Field

[0001] This utility model relates to the technical field of oil and gas exploration and development equipment, and more specifically, to a contact-type pressure boosting ignition device. Background Technology

[0002] In perforation operations at oil and gas wells, a booster ignition device is typically installed inside the cable ignition head. It is used to gradually boost the input signal to 5KV and charge the capacitor. Finally, it triggers the detonator through discharge, which in turn detonates the detonating cord and perforation projectile, thus completing the perforation operation.

[0003] The existing booster ignition device has two wires at one end. One wire connects to the contact pin at the input end of the cable ignition head, and the other wire connects to the housing. The other end of the device has two sockets for connecting the two leads of a dedicated electric detonator. During use, the signal is protected by a safety circuit to prevent radio frequency and stray current interference, ensuring the safety and reliability of the detonation process. However, the existing booster ignition device still has the following drawbacks:

[0004] (1) Insufficient reliability: The connection method of the wire is easily affected by the external environment, which may lead to poor contact or misoperation, thus affecting signal transmission.

[0005] (2) Slow response speed: The time from receiving the command to completing the boost and ignition is relatively long.

[0006] (3) Poor adaptability: It is difficult to cope with special downhole conditions such as extreme temperature and pressure.

[0007] Therefore, there is an urgent need to provide a contact-type boost ignition device that offers stable signal transmission, fast response speed, and high safety and reliability. Utility Model Content

[0008] The purpose of this invention is to solve the problems of insufficient reliability of wire connections in existing booster ignition devices, which affects signal transmission and results in long boosting and ignition times. This invention provides a contact-type booster ignition device that achieves stable signal transmission, fast response speed, and high safety and reliability.

[0009] This utility model is achieved through the following technical solution: a contact-type boosting ignition device, including a housing; the inner cavity of the housing is provided with a contact-type contact assembly, a boosting assembly and a controller, the contact-type contact assembly, the boosting assembly and the controller are connected by a circuit; the contact-type contact assembly includes a cable needle contact plate and a spring needle contact plate, the cable needle contact plate and the spring needle contact plate are respectively disposed at the left and right ends of the housing.

[0010] Preferably, both the cable needle contact plate and the spring needle contact plate are spherical.

[0011] Preferably, the contact-type contact assembly further includes a spring pin contact ring, which is disposed at the right end of the housing.

[0012] Preferably, the outer casing includes a housing and a cover, the cover being detachably connected to the housing; the cable pin contact disc is connected to the cover and the housing respectively via Phillips head countersunk screws, and the spring pin contact ring is connected to the housing via Phillips head countersunk screws.

[0013] Preferably, the contact-type booster ignition device further includes a spring plate, which is connected to the side of the housing away from the cover by a Phillips head countersunk screw.

[0014] Preferably, the contact-type boost ignition device further includes an internal electronic component housing, which is disposed between the cable pin contact plate and the spring pin contact plate, and is used to house the boost assembly and the controller.

[0015] Preferably, the boost assembly includes a boost device, an energy storage device, and a discharge circuit. The controller is connected in series with the boost device, the energy storage device, and the discharge circuit via a circuit connection. The cable needle contact plate is connected to the wires of the boost device via cable needle contact plate wires. The spring needle contact plate and the spring needle contact ring are connected to the wires of the discharge circuit via spring needle contact plate wires and spring needle contact ring wires, respectively.

[0016] Preferably, the spring sheet is connected to the wires of the discharge circuit via a spring sheet wire.

[0017] Preferably, the controller is a PWM controller.

[0018] Preferably, the energy storage device is a capacitor.

[0019] The technical solution of this utility model has the following beneficial effects:

[0020] (1) Contact-type structure design: The wire connection structure at both ends of the ordinary booster device is changed to a contact-type contact structure. The cable pin contact plate and spring pin contact plate in the contact-type contact assembly are used to make contact with the pin of the pin assembly in the ignition head and the spring pin of the lower connector assembly, respectively. The input and output of signals are realized through elastic point contact with the structural components, which ensures the safety and stability of signal transmission, avoids interference from radio frequency and stray current, reduces the risk of poor contact, ensures the stability of ignition frequency, and provides higher safety; moreover, the contact-type structure increases the arc length, improves ignition efficiency, and has a fast response speed.

[0021] (2) The boost component can realize voltage increase, energy storage and stable voltage output functions, and the controller can be used to control the working state of the boost component, thereby significantly shortening the time from receiving the command to completing the boost and ignition.

[0022] (3) The PWM controller is used as the built-in microprocessor, which can adjust the boost rate and ignition timing according to the real-time downhole parameters, thereby improving the efficiency and safety of operation.

[0023] (4) Multiple protection mechanisms: The internal components are protected by the outer casing, which can prevent breakdown due to high-voltage output current; and the PWM controller can be started with low current control, with built-in frequency compensation network, soft start function, and over-temperature protection to accurately control the input and output current, thereby achieving overcurrent protection and preventing direct detonation due to excessive current, thus preventing accidental detonation. The multiple protection mechanisms enable this contact-type booster ignition device to adapt to extreme temperature, pressure and other special downhole conditions, and to work stably under any well depth conditions, providing higher safety and ensuring that the device works stably and reliably under various extreme conditions. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the contact-type booster ignition device in Embodiment 1 of this utility model;

[0025] Figure 2 This is a cross-sectional view of the contact-type booster ignition device in Embodiment 1 of this utility model (excluding the booster assembly and controller);

[0026] Figure 3 This is a schematic diagram of the contact-type contact assembly in Embodiment 1 of this utility model;

[0027] Figure 4 This is a schematic diagram of the boost component in Embodiment 1 of this utility model.

[0028] Reference numerals: 1-Outer casing, 11-Housing shell, 12-Shell cover, 2-Contact type contact assembly, 21-Cable pin contact disc, 22-Spring pin contact disc, 23-Spring pin contact ring, 24-Cable pin contact disc wire, 25-Spring pin contact disc wire, 26-Spring pin contact ring wire, 3-Boost assembly, 31-Boost device, 311-Ground wire, 32-Energy storage device, 33-Discharge circuit, 331-Live wire, 4-Controller, 5-Cross-head countersunk screw, 6-Spring sheet, 7-Internal electronic component housing, 8-Spring sheet wire. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown herein can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] Example 1

[0033] like Figures 1 to 4 As shown, this embodiment provides a contact-type boost ignition device, including a housing 1; the inner cavity of the housing 1 is provided with a contact-type contact assembly 2, a boost assembly 3 and a controller 4 connected by an electrical circuit; the contact-type contact assembly 2 includes a cable needle contact plate 21 and a spring needle contact plate 22 respectively disposed at the left and right ends of the housing 1.

[0034] This contact-type booster ignition device replaces the wire connection structure at both ends of the ordinary booster device 31 with a contact-type contact structure. The cable pin contact plate 21 and spring pin contact plate 22 in the contact-type contact assembly 2 are used to make contact with the pin of the pin assembly in the ignition head and the spring pin of the lower connector assembly, respectively. Signal input and output are achieved through elastic point contact with structural components, ensuring the safety and stability of signal transmission, avoiding interference from radio frequency and stray currents, reducing the risk of poor contact, ensuring the stability of the ignition frequency, and providing higher safety. Furthermore, the contact-type structure increases the arc length, improves ignition efficiency, and increases response speed.

[0035] The housing 1 protects the internal components, preventing breakdown due to the high-voltage output current and ensuring the safety of the device. The boost converter 3 enables voltage increase, energy storage, and stable voltage output. The controller 4 controls the operating state of the boost converter 3, thereby significantly shortening the time from receiving the command to completing the boost and ignition.

[0036] In this embodiment, both the cable pin contact plate 21 and the spring pin contact plate 22 are spherical. The spherical arc surface of the cable pin contact plate 21 makes contact with the pin of the pin assembly, and the spherical arc surface of the spring pin contact plate 22 makes contact with the spring pin of the connector assembly.

[0037] The spherical arc surfaces of the cable needle contact plate 21 and the spring needle contact plate 22 can provide a uniform pressure distribution during contact, ensuring that the contact point remains stable under different angles and loads, thereby improving conductivity; and can also increase the contact area, improve the current path, reduce contact resistance, improve overall conductivity, and make the circuit work more stably.

[0038] In this embodiment, the contact-type contact assembly 2 further includes a spring pin contact ring 23, which is located at the right end of the housing 1, i.e., the spring pin contact ring 23 is located on the same side as the spring pin contact disc 22. The annular arc surface of the spring pin contact ring 23 makes contact with the spring pin of the lower connector assembly.

[0039] By combining the spring pin contact ring 23 with the spring pin contact disc 22, multiple contact points can be achieved, providing a more uniform contact force. Furthermore, the ring structure increases the contact area, effectively enhancing the current transmission capacity, which helps improve the overall circuit efficiency and avoids heat loss caused by poor contact.

[0040] In this embodiment, the outer shell 1 includes a shell 11 and a cover 12, with the cover 12 fastened to the shell 11; the cable needle contact plate 21 is connected to the cover 12 and the shell 11 respectively by a cross-slot countersunk screw 5; the spring needle contact ring 23 is connected to the shell 11 by a cross-slot countersunk screw 5; and the spring needle contact plate 22 is threadedly connected to the shell 11.

[0041] In this embodiment, the contact-type booster ignition device also includes a spring plate 6, which is connected to the side of the housing 11 away from the cover 12 by a cross-slot countersunk screw 5. The spring plate 6 is used for grounding.

[0042] In this embodiment, the contact-type boost ignition device further includes an internal electronic component housing 7 disposed between the cable needle contact plate 21 and the spring needle contact plate 22. The internal electronic component housing 7 is placed in the middle slot of the housing 11 and fixed inside the housing 11 by potting adhesive. The internal electronic component housing 7 is used to house the boost assembly 3 and the controller 4, providing protection for the electronic components. The compact design facilitates installation, debugging, and subsequent maintenance.

[0043] In this embodiment, the boost assembly 3 includes a boost device 31, an energy storage device 32, and a discharge circuit 33. The controller 4 is connected in series with the boost device 31, the energy storage device 32, and the discharge circuit 33 via a circuit connection. The cable needle contact plate 21 is connected to the ground wire 311 of the boost device 31 via the cable needle contact plate 21 wire. The spring needle contact plate 22 and the spring needle contact ring 23 are connected to the live wire 331 of the discharge circuit 33 via the spring needle contact plate 22 wire and the spring needle contact ring 23 wire, respectively.

[0044] The boost converter 31 is responsible for increasing the input voltage to the required output voltage; the energy storage device 32 stores energy and releases it when appropriate; and the discharge circuit 33 releases the stored energy to the load.

[0045] In this embodiment, the spring sheet 6 is connected to the live wire 331 of the discharge circuit 33 via the spring sheet 6 wire.

[0046] In this embodiment, controller 4 is a PWM controller. Using a PWM controller as a built-in microprocessor, it can adjust the boost rate and ignition timing according to real-time downhole parameters, improving operational efficiency and safety. The PWM controller can be started with low current control, and features a built-in frequency compensation network, soft-start function, and over-temperature protection, providing a stable operating frequency and precise duty cycle control. Soft-start of the power supply is achieved through an external RC network, reducing current surges during startup; over-temperature protection enhances system safety, preventing overheating damage; precise control of input and output current magnitude enables overcurrent protection, preventing direct detonation due to excessive current. These anti-accidental detonation mechanisms enable this contact-type boost ignition device to adapt to extreme temperatures, pressures, and other special downhole conditions, ensuring stable operation at any well depth and providing higher safety.

[0047] In this embodiment, the energy storage device 32 is a capacitor. The boost device 31 can quickly increase the internal voltage to 5KV in a short time and rapidly charge the capacitor.

[0048] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A contact-type boost igniter, characterized by comprising: Includes the outer casing (1); The inner cavity of the outer shell (1) is provided with a contact-type contact assembly (2), a boost assembly (3) and a controller (4), and the contact-type contact assembly (2), the boost assembly (3) and the controller (4) are connected by a circuit; The contact-type contact assembly (2) includes a cable pin contact plate (21) and a spring pin contact plate (22), which are respectively located at the left and right ends of the housing (1).

2. The contact-type booster ignition device according to claim 1, characterized in that, Both the cable needle contact plate (21) and the spring needle contact plate (22) are spherical.

3. The contact-type booster ignition device according to claim 1, characterized in that, The contact-type contact assembly (2) further includes a spring pin contact ring (23), which is disposed at the right end of the housing (1).

4. The contact-type booster ignition device according to claim 3, characterized in that, The outer casing (1) includes a housing (11) and a cover (12), wherein the cover (12) is detachably connected to the housing (11); The cable needle contact plate (21) is connected to the cover (12) and the housing (11) respectively by a cross-slot countersunk screw (5), and the spring needle contact ring (23) is connected to the housing (11) by a cross-slot countersunk screw (5).

5. The contact-type booster ignition device according to claim 4, characterized in that, The contact-type booster ignition device also includes a spring plate (6), which is connected to the side of the housing (11) away from the cover (12) by a cross-slot countersunk screw (5).

6. The contact-type booster ignition device according to any one of claims 1 to 5, characterized in that, The contact-type boost ignition device also includes an internal electronic component housing (7), which is disposed between the cable pin contact plate (21) and the spring pin contact plate (22). The internal electronic component housing (7) is used to house the boost assembly (3) and the controller (4).

7. The contact-type booster ignition device according to claim 5, characterized in that, The boost assembly (3) includes a boost device (31), an energy storage device (32), and a discharge circuit (33). The controller (4) is connected in series with the boost device (31), the energy storage device (32), and the discharge circuit (33) via a circuit connection. The cable needle contact plate (21) is connected to the conductor of the booster device (31) through the cable needle contact plate (21) conductor. The spring needle contact plate (22) and the spring needle contact ring (23) are connected to the conductor of the discharge circuit (33) through the spring needle contact plate (22) conductor and the spring needle contact ring (23) conductor, respectively.

8. The contact-type booster ignition device according to claim 7, characterized in that, The spring sheet (6) is connected to the wires of the discharge circuit (33) via the spring sheet (6) wire.

9. The contact-type booster ignition device according to claim 1, characterized in that, The controller (4) is a PWM controller.

10. The contact-type booster ignition device according to claim 7, characterized in that, The energy storage device (32) is a capacitor.

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