A full working condition unpowered exit type protection device

Abstract

The utility model discloses a kind of full-condition unpowered exit type protection devices, belong to unpowered protection device technical field.The device mainly includes electromagnetic valve and pneumatic transmission structure.Electromagnetic valve's shell is equipped with the magnetic core and reset spring with passageway;Pneumatic transmission structure includes transmission case, piston and piston rod.Electromagnetic valve's fourth through-hole is connected with gas holder outside.It is in that the core is to pass through control electromagnetic valve on-off electricity, drive magnetic core moves, change compressed gas from the path of gas holder to pneumatic transmission structure, to push piston rod and execute advance or retreat action.When electromagnetic valve is powered off, under the action of reset spring, magnetic core is automatically reset and switches gas path, without external power, piston can be driven to retreat, realize the automatic exit and reset of device.The utility model solves the problem that traditional protection device fails under the condition such as system power failure, provides all-weather, full-condition safety protection, with reliable structure, automatic reset, maintenance simple and other advantages.

Description

Technical Field

[0001] This utility model relates to the technical field of non-powered protection devices, and in particular to a non-powered withdrawal protection device under all working conditions. Background Technology

[0002] As power systems continue to develop and become more complex, the requirements for equipment safety and stability are increasing. Traditional protection devices may have limitations under specific operating conditions and cannot fully cover all possible fault scenarios. Therefore, a protection device that can adapt to various operating conditions and automatically deactivate without external power is needed to improve overall safety.

[0003] Known technologies:

[0004] 1. Full-condition protection: This generally refers to the ability of equipment or systems to provide effective protection under various operating conditions. In power systems, full-condition protection may include protection strategies for different situations such as overload, short circuit, open circuit, and ground fault.

[0005] 2. Powerless shutdown: This term may refer to situations where the protection device can automatically shut down without an external power source. For example, after a fault is cleared, the protection device can automatically return to normal operating mode without manual intervention.

[0006] 3. Protective devices: These are devices used to monitor and control the operating status of electrical systems and take corresponding measures to prevent equipment damage or ensure personnel safety when abnormalities are detected. Protective devices mainly include solenoid valves, gas tanks, pressure switches, temperature sensors, and residual current devices (RCDs).

[0007] defect:

[0008] 1. Design flaws: If the design is unreasonable, the protection device may fail under certain operating conditions and fail to provide the expected protection function.

[0009] 2. Material issues: The materials used may not meet the requirements, leading to wear and corrosion problems after long-term operation, affecting the performance and reliability of the equipment.

[0010] 3. Manufacturing process: Errors or defects that may occur during the manufacturing process may also lead to a decrease in the performance of the protection device, or even complete failure.

[0011] 4. Improper maintenance: If users fail to perform regular maintenance and inspections as recommended by the manufacturer, they may miss the opportunity to detect potential problems early, thereby increasing the risk of failure. Utility Model Content

[0012] The technical solution of this utility model to solve the above-mentioned technical problems is to provide a full-condition, non-powered withdrawal protection device, comprising:

[0013] An electromagnetic valve includes a housing, an electromagnet, a magnetic core, and a return spring. The housing has a cavity, and a first and second through-hole communicating with the cavity are provided at the top of the housing, and a third, fourth, and fifth through-hole communicating with the cavity are provided at the bottom. The electromagnet is disposed at one end of the housing. The magnetic core is movably disposed within the cavity of the housing, and a first and second channel are formed within the magnetic core. The return spring is disposed at the end of the magnetic core facing the electromagnet and abuts against the cavity wall of the housing. The fourth through-hole is used to connect an external gas storage tank.

[0014] A pneumatic transmission structure includes a transmission box, a piston, and a piston rod. The piston is movably disposed in the transmission box, and the piston rod is fixed on the piston. The transmission box has a first connecting hole and a second connecting hole on both sides of the piston, the first connecting hole being connected to the first through hole, and the second connecting hole being connected to the second through hole.

[0015] When the solenoid valve is energized, the magnetic core compresses the return spring, and the fourth through hole connects to the first through hole through the first channel, pushing the piston toward the second connecting hole. Air in the transmission box is pushed out from the second connecting hole to the second through hole and flows through the second channel to the fifth through hole. When the solenoid valve is de-energized, the return spring pushes out the magnetic core, and the fourth through hole connects to the second through hole through the second channel. The second through hole connects to the second connecting hole, pushing the piston toward the first connecting hole. Air in the transmission box is pushed out from the first connecting hole to the first through hole and flows through the first channel to the third through hole for discharge.

[0016] Furthermore, it also includes a gas storage tank, and the fourth through hole is connected to the gas storage tank through a pipe.

[0017] Furthermore, it also includes an endoscopic optical imaging system connected to the piston rod; the endoscopic optical imaging system is connected to the gas storage tank through a gas source filtration system.

[0018] Compared with the prior art, the technical solution of this utility model has the following significant advantages:

[0019] 1. Achieves true all-condition protection: The core of this invention lies in utilizing compressed gas (from a gas storage tank) as a power source. Intelligent switching of the gas path is controlled by the on / off state of a solenoid valve, driving the pneumatic transmission structure to perform actions. Regardless of whether the external power grid is normal, faulty, or even in a power outage state, the device's built-in gas storage tank ensures it has an independent, stable, and reliable emergency power source. This allows for reliable operation under various extreme conditions such as overload, short circuit, and system depressurization, effectively overcoming the limitations of traditional protection devices that may fail under specific conditions (such as system power outages).

[0020] 2. Features automatic unpowered exit and reset capability: The device cleverly designs the internal air passages (first and second channels) of the solenoid valve in conjunction with the reset spring. When a fault is cleared or normal exit is required, simply de-energize the solenoid valve. Driven by the reset spring, the magnetic core automatically resets, switching the air passage direction. Utilizing the residual gas in the storage tank or the restored system pressure, the piston is automatically driven back to its initial position. The entire process requires no external power or manual intervention, achieving automatic reset after fault clearance and improving the system's automation level and recovery efficiency.

[0021] 3. Compact structure, high reliability, and simple maintenance: The entire device is based on pneumatic logic, with a simple and clear mechanical structure. Compared to complex pure electric or electromechanical-hydraulic integrated systems, it eliminates a large number of vulnerable parts such as motors and hydraulic pumps, as well as power conversion links. This not only reduces potential failure points but also improves the inherent reliability of the device itself.

[0022] 4. Significantly enhanced safety: Using compressed air as the medium, it is inherently safe, avoiding the risk of sparks that may arise from using electric drive in flammable, explosive, or sensitive electrical equipment environments. It also eliminates the potential oil leakage pollution and maintenance difficulties that may exist in hydraulic systems. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the all-condition non-powered withdrawal protection device described in this utility model;

[0025] Figure 2 This is a schematic diagram of the pneumatic transmission structure of the solenoid valve in the energized state of this utility model;

[0026] Figure 3This is a schematic diagram of the pneumatic transmission structure of the solenoid valve in the state of no power.

[0027] Explanation of icon numbers:

[0028] 1. Solenoid valve; 11. Housing; 12. Electromagnet; 13. Magnetic core; 14. Return spring; 2. Pneumatic transmission structure; 21. Transmission box; 22. Piston; 23. Piston rod; 3. Endoscopic optical imaging system; 4. Air tank; 5. Air source filtration system; 6. Control box. Detailed Implementation

[0029] 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 a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "several" or "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] This utility model proposes a full-condition non-powered exit protection device, aiming to design a full-condition non-powered exit protection device.

[0035] The following will describe the all-condition non-powered withdrawal protection device proposed in this utility model in specific embodiments:

[0036] In the technical solution of this embodiment, such as Figure 1 , Figure 2 , Figure 3 As shown, a full-condition non-powered withdrawal protection device includes:

[0037] Solenoid valve 1 includes a housing 11, an electromagnet 12, a magnetic core 13, and a return spring 14. A cavity is formed inside the housing 11, and a first through hole and a second through hole communicating with the cavity are opened at the top of the housing 11, and a third through hole, a fourth through hole, and a fifth through hole communicating with the cavity are opened at the bottom. The electromagnet 12 is disposed at one end of the housing 11. The magnetic core 13 is movably disposed in the cavity of the housing 11, and a first channel and a second channel are formed inside the magnetic core 13. The return spring 14 is disposed at the end of the magnetic core 13 facing the electromagnet 12 and abuts against the cavity wall of the housing 11. The fourth through hole is used to connect an external gas storage tank 4.

[0038] The pneumatic transmission structure 2 includes a transmission box 21, a piston 22 and a piston rod 23. The piston 22 is movably disposed in the transmission box 21, and the piston rod 23 is fixed on the piston 22. The transmission box 21 has a first connecting hole and a second connecting hole on both sides of the piston 22, respectively. The first connecting hole is connected to the first through hole, and the second connecting hole is connected to the second through hole.

[0039] When the solenoid valve 1 is energized, the magnetic core 13 compresses the return spring 14, and the fourth through hole connects to the first through hole through the first channel, pushing the piston 22 toward the second connecting hole. The air in the transmission box 21 is pushed out from the second connecting hole to the second through hole and flows through the second channel to the fifth through hole. When the solenoid valve 1 is de-energized, the return spring 14 pushes out the magnetic core 13, and the fourth through hole connects to the second through hole through the second channel. The second through hole connects to the second connecting hole, pushing the piston 22 toward the first connecting hole. The air in the transmission box 21 is pushed out from the first connecting hole to the first through hole and flows through the first channel to the third through hole for discharge.

[0040] Furthermore, it also includes a gas storage tank 4, and the fourth through hole is connected to the gas storage tank 4 through a pipe.

[0041] Furthermore, it also includes an endoscopic optical imaging system 3, which is connected to the piston rod 23; the endoscopic optical imaging system 3 is connected to the gas storage tank 4 through the gas source filtration system 5.

[0042] Furthermore, it also includes a control box 6, which is electrically connected to the air source filtration system 5.

[0043] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A full-condition, non-powered withdrawal protection device, characterized in that, include: An electromagnetic valve includes a housing, an electromagnet, a magnetic core, and a return spring. The housing has a cavity, and a first and second through-hole communicating with the cavity are provided at the top of the housing, and a third, fourth, and fifth through-hole communicating with the cavity are provided at the bottom. The electromagnet is disposed at one end of the housing. The magnetic core is movably disposed within the cavity of the housing, and a first and second channel are formed within the magnetic core. The return spring is disposed at the end of the magnetic core facing the electromagnet and abuts against the cavity wall of the housing. The fourth through-hole is used to connect an external gas storage tank. A pneumatic transmission structure includes a transmission box, a piston, and a piston rod. The piston is movably disposed in the transmission box, and the piston rod is fixed on the piston. The transmission box has a first connecting hole and a second connecting hole on both sides of the piston, the first connecting hole being connected to the first through hole, and the second connecting hole being connected to the second through hole. When the solenoid valve is energized, the magnetic core compresses the return spring, and the fourth through hole connects to the first through hole through the first channel, pushing the piston toward the second connecting hole. Air in the transmission box is pushed out from the second connecting hole to the second through hole and flows through the second channel to the fifth through hole. When the solenoid valve is de-energized, the return spring pushes out the magnetic core, and the fourth through hole connects to the second through hole through the second channel. The second through hole connects to the second connecting hole, pushing the piston toward the first connecting hole. Air in the transmission box is pushed out from the first connecting hole to the first through hole and flows through the first channel to the third through hole for discharge.

2. The all-condition non-powered withdrawal protection device according to claim 1, characterized in that, It also includes a gas storage tank, and the fourth through hole is connected to the gas storage tank through a pipe.

3. The all-condition non-powered withdrawal protection device according to claim 1, characterized in that, It also includes an endoscopic optical imaging system, which is connected to the piston rod; the endoscopic optical imaging system is connected to the gas storage tank through a gas source filtration system.

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