Impact atomization type temperature and pressure reducing valve

Abstract

The invention belongs to the technical field of valve equipment, and relates to an impact atomization type temperature and pressure reducing valve. The impact atomization type temperature and pressurereducing valve comprises a valve body, a valve element and a valve cover; the valve element is installed in the valve body; the valve body comprises an upper valve cavity and a lower valve cavity; afirst communicating groove is formed in the side wall of a communicating pipe, and the upper valve cavity communicates with the lower valve cavity through the first communicating groove; a valve clackis installed at the bottom end of the valve element, and the valve clack comprises a valve clack column and a valve clack cylinder fixedly installed on the valve clack column; an exhaust groove is formed in the side wall of the valve clack cylinder in the axial direction; a containing cavity is formed in the valve cover in the axial direction, the valve element is provided with an adjusting cylinder in the containing cavity, a threaded sliding groove is formed in the adjusting cylinder, and an adjusting shaft is slidably arranged in the adjusting cylinder in a penetrating mode; and an execution device is connected with the adjusting shaft and used for driving the adjusting shaft to move vertically. According to the impact atomization type temperature and pressure reducing valve, the influence of medium force on opening and closing force can be avoided, so that the valve is convenient to open and close, the pressure loss is avoided, meanwhile, the impact force of high-pressure gas on the valve clack cylinder at the moment when the valve is opened is weakened, the service life of the valve clack cylinder is prolonged, and meanwhile the atomization effect of the valve is good.

Description

technical field [0001] The invention belongs to the technical field of valve equipment, and in particular relates to an impact atomization type temperature and pressure reduction valve. Background technique [0002] With the further implementation of the national energy saving and emission reduction strategy, all kinds of pressure equipment have developed rapidly, especially the large capacity and large unit pressure equipment with steam as the power source. High temperature and high pressure temperature and pressure reducing valves are used more and more widely. [0003] The temperature and pressure reducing valve is a valve that reduces the inlet pressure to a certain required outlet pressure through adjustment, and relies on the energy of the medium itself to automatically maintain a stable outlet pressure. From the point of view of fluid mechanics, the temperature and pressure reducing valve is a throttling element whose local resistance can be changed, that is, by chan...

AI Technical Summary

Problems solved by technology

[0004] The traditional temperature and pressure reducing valve is just a simple valve disc and valve stem structure. The valve rod connects the valve disc and provides the opening and closing force for the operation of the valve disc. However, due to the action of the medium force, the closing force of the valve disc is relatively low. Large, the opening force of the upper opening is small, resulting in unstable operation

In order to solve this problem, a balance hole channel is set on the valve disc to connect the space divided by the valve disc, so that part of the medium can flow through the balance hole channel, which balances the medium force and reduces the opening and closing force of the valve disc. However, due to the existence of the balance hole channel, the medium will flow out from the balance hole channel. When the balance medium force is not needed, the medium will still leak, resulting in a loss of pressure. At the same time, when the valve is opened and closed, the flow rate increases instantaneously. Large, the impact on the sealing surface is huge, the erosion is very serious, the valve core is damaged, the service life is short, and it is easy to cause the valve to leak. At the same time, the cooling water is injected into the pressure reducing valve without treatment, and the atomization effect is poor, which affects cooling. ability

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