Online dismounting and mounting device for valve seat part of ultralow-temperature top-mounted ball valve
An ultra-low temperature, valve seat technology, applied in the field of online disassembly and assembly devices for ultra-low temperature top-loading ball valve seat components, can solve the problems of long downtime, hidden danger of explosion, long maintenance time, etc., to reduce maintenance costs, improve disassembly and assembly efficiency, Easy and fast installation
Active Publication Date: 2022-03-08
CHONGQING CHUANYI CONTROL VALVE
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Problems solved by technology
Under low-temperature conditions, valve sealing parts and ball cores are easily affected by low-temperature media, resulting in varying degrees of deformation, resulting in gaps between ball cores, valve seats and other components, and their sealing performance is damaged, resulting in low temperature Internal leakage of the medium in the device affects the normal operation of the entire device, and in severe cases, there may be a hidden danger of explosion, which endangers the life safety of the workers in the cryogenic device
[0004] The existing top-mounted low-temperature ball valve is used online. When the valve seat sealing parts need to be replaced, the device needs to be shut down and the valve is offline for maintenance; resulting in longer maintenance time, longer device shutdown time, and higher maintenance costs
Method used
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[0025] This embodiment provides an on-line assembly and disassembly device for ultra-low temperature top-loading ball valve seat parts, including a mounting seat 10, a level adjustment assembly 20, a vertical plate assembly 30, and a disassembly assembly 40. The mounting seat 10 has a mounting seat 10 Fixed on the installation position on the valve body, the horizontal adjustment assembly is connected between the vertical plate assembly 30 and the mounting seat 10 and can drive the vertical plate assembly 30 to move horizontally, and the vertical plate assembly 30 extends through the upper port of the valve body to The valve body is connected with the dismounting assembly 40 , and the dismounting assembly 40 moves horizontally with the vertical plate assembly 30 and can pull the valve seat outward to dismantle the valve seat or press inward to install the valve seat.
[0026] This structure is used with the top entry cryogenic ball valve. During online maintenance, the valve co...
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The invention discloses an online dismounting and mounting device for a valve seat part of an ultralow-temperature top-mounted ball valve, which comprises a mounting seat, a horizontal adjusting assembly, a vertical plate assembly and a dismounting and mounting assembly, and is characterized in that the mounting seat is provided with a mounting position for fixing the mounting seat on a valve body; the horizontal adjusting assembly is connected between the vertical plate assembly and the mounting base and can drive the vertical plate assembly to move horizontally, the vertical plate assembly extends into the valve body through an upper end opening of the valve body and is connected with the dismounting assembly, and the dismounting assembly can pull the valve seat outwards to dismount the valve seat or press the valve seat inwards to mount the valve seat along with horizontal movement of the vertical plate assembly. The online dismounting and mounting device is convenient and fast to mount and has the effect of mounting and dismounting the valve seat, the dismounting and mounting efficiency is improved easily due to the fact that a switching device is not needed in the process of dismounting and mounting the valve seat, the online maintenance function of the ultralow-temperature top-mounted ball valve is finally achieved, the maintenance time of the ultralow-temperature top-mounted ball valve is shortened, the downtime is shortened, and the maintenance cost is reduced. The maintenance cost is reduced.
Description
technical field [0001] The invention relates to the technical field of valves, in particular to an online assembly and disassembly device for an ultra-low temperature top entry ball valve seat part. Background technique [0002] Cryogenic ball valves are mainly used in LNG receiving stations, LNG storage tanks and transportation, air separation units, low-temperature methanol, liquid oxygen and liquid nitrogen and other low-temperature storage tanks and low-temperature working conditions of tank trucks. The medium changes from liquid state to When it turns into a gaseous state, the volume expands rapidly and the pressure rises, and the medium is mostly flammable and explosive. According to the user's request, the most commonly used structure of the ball valve in the ultra-low temperature device is the top-mounted structure. [0003] In the application process of the top-entry low-temperature ball valve, the installation method of the valve seat sealing part is a threaded ro...
Claims
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IPC IPC(8): B23P19/02
CPCB23P19/02Y02E30/30
Inventor景欢李宏伟李松岭范贤峰许波段大军吴绪敏蒋永兵
OwnerCHONGQING CHUANYI CONTROL VALVE