Sealing structure of safety valve of railway tank car
By designing a railway tanker safety valve core composed of guide rod, step-shaped sealing section and tie rod, combined with the fixing method of the main seal ring and the secondary seal ring, the problems of easy sealing fall off in the prior art, seal failure and difficulty in maintenance when the valve core swings, achieving a more stable and reliable sealing effect and a convenient maintenance process.
CN119687250APending Publication Date: 2025-03-25XI AN RAILWAY TRANSPORTATION EQUIP
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Patent Information
- Application Number
- CN202411971588.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-03-25
AI Technical Summary
Technical Problem
The sealing structure of the existing railway tanker safety valve is prone to fall off under large operating conditions, the sealing failure occurs when the valve core swings, and it is not easy to repair.
Method used
A sealing structure for a railway tanker safety valve is designed. The valve core consists of a guide rod, a step-shaped circular seal section and a tie rod. The main seal ring and the secondary seal ring are fixed by a pressure cap and a valve core to ensure that a stable seal can be achieved when the valve core is offset.
Benefits of technology
It improves the stability and reliability of the sealing structure, facilitates replacement of the seal ring, does not need to be disassembled, facilitates maintenance, and improves maintenance efficiency.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN119687250A_ABST
Abstract
The invention relates to a safety valve, in particular to a sealing structure of a safety valve of a railway tank car, and aims to solve the problems that an existing sealing piece is easy to fall off or fail and is not easy to overhaul under the working condition that the discharge capacity of the safety valve is large. The check valve comprises a valve body and a valve element arranged in the valve body, a gland in sealing connection with the sealing section of the valve element is arranged on the sealing section of the valve element, the gland is further fixed to the valve element through a locking nut arranged on a guide rod on the upper portion of the valve element, the sealing section of the valve element is in sealing connection with the upper end face of the valve body, and therefore the sealing effect is guaranteed; when maintenance is needed, the gland can be taken out and the sealing piece arranged on the sealing section of the valve element can be replaced only by dismounting the locking nut, so that the maintenance efficiency is improved.
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