隔爆型磁致伸缩位移传感器
By designing an explosion-proof magnetostrictive displacement sensor and adopting a non-contact measurement and sealing structure, the problem of poor explosion-proof performance of existing magnetostrictive displacement sensors in explosive environments has been solved, improving safety and service life, and making it suitable for detection in explosive environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING TEBEIFU ELECTRONIC TECH CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-07-17
AI Technical Summary
Existing magnetostrictive displacement sensors have poor explosion-proof performance in explosive environments, are inconvenient to assemble and use, and pose safety hazards.
An explosion-proof magnetostrictive displacement sensor was designed, including an explosion-proof electronic compartment, a measuring rod assembly, a sensor body, and connecting wires. Through a non-contact measurement method, combined with a sealed structure and reinforced connections, the safety and reliability of the sensor are improved.
It improves the safety and lifespan of the sensor in explosive environments, making it suitable for environmental detection containing Class II explosive gases, and reduces the risk of mechanical wear and accuracy degradation.
Smart Images
Figure CN224517665U_ABST
Abstract
Claims
1. A flameproof magnetostrictive displacement transducer, characterized by, include: An explosion-proof electronic compartment is provided with a receiving cavity. The explosion-proof electronic compartment includes a top cover and a base. The top cover and the base are connected and enclose the receiving cavity. The top cover is provided with a wire-through hole, and the base is provided with an assembly hole. Both the wire-through hole and the assembly hole are connected to the receiving cavity and the outside. A probe assembly includes a probe and a magnetic ring; one end of the probe is connected to the base, and the other end extends away from the top cover; the probe has an assembly cavity that communicates with the assembly hole; the magnetic ring has a built-in magnetic core, and the magnetic ring is sleeved on the outer periphery of the probe and can move along the probe; The sensor body includes a circuit board, a sensitive element, and a position sensing element; the sensitive element is connected to the circuit board and is located within the accommodating cavity; the position sensing element extends into the assembly cavity through the mounting hole. The connecting wire passes through the wire hole and connects to the circuit board.
2. The flameproof magnetostrictive displacement sensor according to claim 1, wherein The upper cover is provided with a fitting cavity; the base includes a connecting flange and a protrusion; the connecting flange receives the upper cover, the protrusion is disposed on the side of the connecting flange facing the upper cover and is nested in the fitting cavity, and the end face of the protrusion facing the upper cover is provided with a mounting groove; The assembly hole and the mounting slot are connected.
3. The explosion-proof magnetostrictive displacement sensor according to claim 2, characterized in that: The explosion-proof magnetostrictive displacement sensor further includes a first sealing ring; wherein, the connecting flange has a first annular groove on the side facing the upper cover; the first sealing ring is disposed in the first annular groove; and / or; The explosion-proof magnetostrictive displacement sensor further includes a second sealing ring; wherein, the connecting flange has a second annular groove on the side facing the measuring rod; the second sealing ring is disposed in the second annular groove.
4. The explosion-proof magnetostrictive displacement sensor according to claim 1, characterized in that, The position sensing element includes a waveguide wire, the waveguide wire being connected to the sensing element; and / or The probe assembly also includes an end cap; the end cap is located at the end of the probe away from the explosion-proof electronic compartment to seal the probe.
5. The explosion-proof magnetostrictive displacement sensor according to any one of claims 1 to 4, characterized in that, The sensor body also includes a mounting bracket; the circuit board and the sensitive element are disposed on the mounting bracket.
6. The flameproof magnetostrictive displacement transducer according to any one of claims 1 to 4, characterized in that, The sensor body also includes a shielding cover; the shielding cover is disposed on the outside of the circuit board and the sensitive element.
7. The flameproof magnetostrictive displacement transducer according to claim 6, characterized in that The sensor body also includes an insulating cover; the insulating cover is disposed on the outside of the shielding cover.
8. The flameproof magnetostrictive displacement transducer according to any one of claims 1 to 4, characterized in that, It also includes a grounding screw; the grounding screw is disposed on the side wall of the upper cover.
9. The flameproof magnetostrictive displacement transducer according to any one of claims 1 to 4, characterized in that, The threading hole is located on the side wall of the upper cover.
10. The flameproof magnetostrictive displacement transducer according to claim 9, characterized in that, It also includes an explosion-proof and waterproof connector; the explosion-proof and waterproof connector is threadedly connected to the wiring hole, and the connecting wire extends through the explosion-proof and waterproof connector to the outside of the explosion-proof electronic compartment.