Micro-operation type valve

A valve and micro-manipulation technology, applied in the direction of lift valve, sliding valve, valve device, etc., can solve the problems of wasting energy, difficult operation, affecting the appearance of the environment, etc., and achieve the effect of reducing production cost, saving metal materials, and avoiding equipment failure.

Inactive Publication Date: 2010-09-08

青岛高远热能动力设备有限公司

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AI-Extracted Technical Summary

Problems solved by technology

[0005] 1. Difficult to operate

Especially large-scale valves, whether electric or manual, have problems such as jamming, high resistance, loose closing, and difficulty in opening

[0006] 2. Serious leakage

[0007] 3. Lax closing and internal leakage

Since the shutdown is all dependent on external force, and the external force is often too small, resulting in internal leakage

[0008...

Method used

The integration of large and small valves simplifies the structure and installation workload, but the disadvantage is that the stroke of the operating va...

Abstract

The invention relates to a valve, in particular to a micro-operation type valve which realizes large switching and regulating actions of the valve by using per se pressure of a medium and amplifying the per se pressure of the medium through a micro operating force. The valve comprises an inflow chamber, a buffer chamber and an outflow chamber, wherein the buffer chamber is arranged between the inflow chamber and the outflow chamber; the inflow chamber is provided with an inlet; the outflow chamber is provided with an outlet; the three chambers are separated by valve core; and a medium passage is formed between the buffer chamber and the outflow chamber and is provided with a control valve. The micro-operation type valve has the following technical advantages: a gap between the valve core and the buffer chamber is allowed and used for leaking flows and performing control without adopting a thin film for sealing so as to prevent equipment failures caused by aging of the thin film; by using the per se pressure of the medium, the operation is labor-saving and energy-saving, and greatly increase reliability; and a gate valve is closed when the control valve is closed. At that time, no passage leaks flows except for a valve port of the gate valve, and the closing force is stronger when the pressure difference between the front and rear sides of the valve is larger, so internal leakages are difficult to occur.

Application Domain

Slide valveLift valve

Technology Topic

EngineeringDevice failure +4

Image

Examples

Experimental program(7)

Example Embodiment

[0040] Example 1:

[0041] Such as figure 1 As shown, the micro-operated valve of the present invention includes an inlet chamber 9, a buffer chamber 3, and an outlet chamber 7. The buffer chamber 3 is arranged between the inlet chamber 9 and the outlet chamber 7, and the valve core 2 removes the above three The chamber is opened. A medium passage is provided between the buffer chamber 3 and the outflow chamber 7, and a control valve 4 is provided on the medium passage. The medium passage is arranged as a pressure guiding tube 5 connected between the buffer cavity 3 and the outflow cavity 7, and the control valve 4 is arranged on the pressure guiding tube 5.

[0042] Working principle: The medium enters the inlet chamber 9 from the inlet 1. When the control valve 4 is closed, due to the gap between the valve core 2 and the valve cover, the pressure between the inlet chamber 9 and the buffer chamber 3 is balanced. Under the action of the pressure difference between the inlet 1 and the outlet 6 and the gravity of the valve core 2, the valve core 2 moves downward to close the large valve. When the control valve 4 is opened, the medium in the buffer chamber 3 flows to the outlet chamber 7 through the pressure guiding tube 5, and the pressure in the buffer chamber 3 decreases and approaches the pressure of the outlet chamber 7. Since the area of the upper piston of the valve core 2 is larger than the area of the lower valve port, the valve core 2 is pushed up under the same pressure difference, causing the large valve to open. It can be seen that when the control valve is open, the large valve is open; otherwise, the control valve is closed and the large valve is closed. That is, the so-called "small operation, big action" is realized. If the operating valve is a safety valve, then the entire micro-operated valve should be a large safety valve.

[0043] Another function of this valve is that the position of the operating valve can be arranged arbitrarily, enabling large valves to be operated at a certain distance. For example: the large valve is located in a harsh environment (high temperature, toxic, etc.), the small valve can be installed in a safe and convenient location.

Example Embodiment

[0044] Example 2:

[0045] Improved on the basis of embodiment 1, that is, a through hole 10 is provided in the center of the valve core 2, the medium passage is provided in the through hole 10 in the center of the valve core 2, and the control valve 4 is provided above the valve core 2 of the buffer chamber 3. The valve core 2 of the control valve 4 and the valve core of the large valve form a valve sealing relationship.

[0046] According to the above principle, when the control valve 4 is opened, the large valve is opened; the control valve 4 is closed, and the large valve is closed. The benefits of such an improvement are:

[0047] The large and small valves are integrated, which simplifies the structure and installation workload, but the disadvantage is that the stroke of the operating valve is the same as that of the large valve. If the operating valve is electric or pneumatic, the stroke requirement of the actuator is slightly higher.

Example Embodiment

[0048] Example 3:

[0049] In this embodiment, the process of the traditional shut-off valve is changed, and the structure in which the medium flows vertically through the valve port is changed to axial flow.

[0050] The medium enters the inlet chamber 9 from the inlet 1. When the control valve 4 is closed, refer to the description of Example 1. The pressure balances between the inlet chamber 9 and the buffer chamber 3, and the large valve is closed; when the control valve 4 is opened, the buffer chamber The pressure of 3 is close to the pressure of the outlet chamber 7. Under the action of the pressure difference between the inlet chamber 9 and the buffer chamber 3, the valve core 2 moves to the left to open the large valve. This kind of valve can be called: axial flow type micro-operated valve. The advantages of this valve are: 1. The medium flow is smoother than the traditional shut-off valve, so the flow resistance is small, which is of energy saving significance; 2. The appearance is simple and beautiful, and easy to install.

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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Improve reliability
save metal material

Micro-operation type valve

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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