Novel ultrahigh voltage regulator

Abstract

The invention relates to a novel ultrahigh voltage regulator comprising a reducing valve, an exhaust needle valve, a loading cavity cover and a valve body. A cavity in the loading cavity cover is a loading cavity. A port B of the reducing valve is communicated with the loading cavity. The lower end of the loading cavity cover is fixedly connected with the valve body. The exhaust needle valve is arranged on the loading cavity cover. A supporting part and a sensing element are arranged at the position where the loading cavity cover is connected with the valve body. The sensing element covers the supporting part, and a lower cavity is formed between the sensing element and the supporting part. A valve rod is fixedly connected to the sensing element and penetrates through the supporting part and a valve port to be fixedly connected with a gland in the valve body. A valve seat is arranged below the gland. A valve port cushion is arranged between the gland and the valve seat. The valve seat is arranged in a cavity of a base of the valve body and connected with the base through a closing spring. The valve body is provided with an upper inlet and a lower inlet. The upper inlet is communicated with a port A of the reducing valve through a pipeline. The novel ultrahigh voltage regulator is easy to operate, flexible in response and good in stability.

Description

technical field [0001] The invention relates to a novel ultra-high pressure gas pressure regulator. Background technique [0002] Existing ultra-high pressure regulators generally adopt the following three types of structures. The first type is a pilot-type regulator. As an indirect-acting regulator, the response speed is slow when the downstream flow changes, and the pilot needs to be connected first. Sensing the change of downstream pressure to adjust the opening and then passing it to the main pressure regulator to adjust the opening, there is an additional feedback link, the response is not timely enough when the downstream flow changes frequently, often causing downstream pressure fluctuations, and the structure of this pressure regulator is relatively Complicated, large in size and high in cost; the second type is a spring-loaded direct-acting pressure regulator, with the piston as the pressure sensing element, limited by the high outlet pressure, and the sensing area ...

AI Technical Summary

Problems solved by technology

[0002] Existing ultra-high pressure regulators generally adopt the following three types of structures. The first type is a pilot-type regulator. As an indirect-acting regulator, the response speed is slow when the downstream flow changes, and the pilot needs to be connected first. Sensing the change of downstream pressure to adjust the opening and then passing it to the main pressure regulator to adjust the opening, there is an additional feedback link, the response is not timely enough when the downstream flow changes frequently, often causing downstream pressure fluctuations, and the structure of this pressure regulator is relatively Complicated, large in size and high in cost; the second type is a spring-loaded direct-acting pressure regulator, with the piston as the pressure sensing element, limited by the high outlet pressure, and the sensing area of ​​the piston is small, so its sensitivity Smaller, and after long-term use, the frictional resistance of the piston movement is relatively large, resulting in unsatisfactory pressure stabilization accuracy and closing pressure level; the third type is the gas load direct-acting pressure regulator, compared with the spring load direct-acting pressure regulator Because its pressure sensing element does not need to withstand a large differential pressure, the effective area of ​​its pressure sensing element can be set as a larger diaphragm, its sensitivity is greatly improved, and the friction of piston movement is avoided, and its performance is excellent. Great improvement; compared with the indirect-acting pressure regulator, its corresponding speed is greatly improved, and it is more suitable for the working conditions with frequent flow changes; but the existing gas-loaded pressure regulators set the load by manually adjusting the needle valve The pressure in the cavity, which is more difficult when the pressure difference between the inlet and outlet is extremely large, requires the operator to react quickly and be very careful, and a little carelessness may cause the downstream pressure to be too high, even for professionally trained operators It is also a difficult and cumbersome work, and it often requires repeated operations to obtain an accurate set pressure; moreover, this type of pressure regulator has high requirements for the configured needle valve, which not only requires high accuracy of flow regulation, but also requires closeness. Very high, the slightest leak can cause the regulator to shut down or the downstream pressure to be too high

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