A high-pressure corrosion-resistant safety valve
A corrosion-resistant and safety valve technology, applied in the field of safety valves, can solve the problems of carbon steel safety valves such as corrosion, insufficient corrosion resistance, and insufficient sealing performance, and achieve the effects of prolonging service life, good sealing performance, and enhancing corrosion resistance
Active Publication Date: 2021-11-09
SHANGHAI FENGHONG VALVE
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Problems solved by technology
The existing safety valves have the following disadvantages: 1. Insufficient sealing performance under high pressure, causing leakage; 2. Insufficient corrosion resistance. In some highly corrosive industries, raw materials, process media and finished products in the production process, etc. are highly chemically corrosive
In the acid, alkali and salt environment of electrical and chemical media, the existing carbon steel safety valve will be corroded quickly, even the stainless steel safety valve will be corroded
Method used
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Embodiment Construction
[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0021] figure 1 It is a structural schematic diagram of a high-pressure corrosion-resistant safety valve in an embodiment of the present invention.
[0022] See figure 1 , the high-pressure corrosion-resistant safety valve of the embodiment of the present invention includes a valve body 1, a valve cover 2 is arranged above the valve body 1, an inlet flow channel is provided at the lower part of the valve body 1, and an outlet flow channel is provided at the side, so The outlet end of the inlet channel is provided with a valve seat 3; the valve cover 2 is vertically provided with a valve stem 5, the valve stem 5 is covered with a spring 6, and the bottom of the spring 6 is provided with a spring seat 12, The upper part of the spring 6 is provided with a pressure seat 13, and the connection between the valve cover 2 and the valve body 1 is provided with...
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Abstract
The invention discloses a high-pressure corrosion-resistant safety valve, which comprises a valve body, a valve cover is arranged above the valve body, an inlet flow channel is arranged at the lower part of the valve body, an outlet flow channel is arranged at the side, and the inlet flow channel A valve seat is provided at the outlet end of the valve cover; a valve stem is vertically arranged inside the valve cover, a spring is sleeved on the valve stem, and a guide sealing structure is provided at the connection between the valve cover and the valve body, and the valve cover The lower end of the rod extends into the valve body through the guide sealing structure, the lower end of the valve rod is connected with a recoil disc, the lower part of the recoil disc is connected with a disc matching the valve seat, and the upper part of the recoil disc is connected with a corrugated The bellows is fixed on the valve body through a fixing ring, and the fixing ring is arranged under the guiding sealing structure. The invention can well balance the sealing performance and corrosion resistance performance, and at the same time avoid the jamming of the valve stem, has a simple and compact structure, and is suitable for various high-pressure and high-corrosion application occasions.
Description
technical field [0001] The invention relates to a safety valve, in particular to a high-pressure corrosion-resistant safety valve. Background technique [0002] The safety valve is a special equipment used for the overpressure protection of the pressure system, and it is an automatic valve. When the system pressure reaches the set pressure, it does not rely on any external force, but uses the force of the medium itself to discharge a certain rated amount of fluid, so as to prevent the internal pressure of the system from exceeding the predetermined safety value. When the pressure returns to normal, the valve will be closed again to prevent the medium from continuing to flow out. The existing safety valves have the following disadvantages: 1. Insufficient sealing performance under high pressure, causing leakage; 2. Insufficient corrosion resistance. In some highly corrosive industries, raw materials, process media and finished products in the production process, etc. Both a...
Claims
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IPC IPC(8): F16K17/04F16K17/06F16K27/02
CPCF16K17/04F16K17/06F16K27/02
Inventor 张波
Owner SHANGHAI FENGHONG VALVE