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Expansion valve

A technology of expansion valve and valve body, which is applied in the field of expansion valves, and can solve problems such as rising prices of expansion valves and supporting facilities, and large energy loss in medium flow.

Inactive Publication Date: 2010-09-01
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, in the steam refrigeration cycle system, the expansion valve is mainly designed to generate refrigeration steam by using the interception principle, but the traditional expansion valve needs to be equipped with a control system and an additional evaporator. With the increase of the medium processing capacity, the expansion The price of valves and supporting facilities has also increased accordingly
In addition, the closure of the traditional expansion valve leads to a large loss of medium flow energy

Method used

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Embodiment Construction

[0009] Such as figure 1 , 2 As shown, the expansion valve includes a valve body 1, which is characterized in that it also includes: the inner cavity of the valve body 1 is provided with a combined sealing ring 2 and a plunger 3 for controlling the flow of the medium, and the combined sealing The upper part of the ring 2 is provided with a bonnet 6 for its positioning, the bonnet 6 is fixedly installed on the valve body 1, the valve stem assembly 5 is installed on the plunger 3, the lower part of the valve stem assembly 5 is provided with a condensation baffle 4, and the valve body A conical cut-off screen 9 is provided at the medium inlet A of the lower part of 1, and a hemispherical steam screen 8 is installed on the upper end of the conical cut-off screen 9 .

[0010] The condensing baffle 4 is fixed on the lower end of the valve rod assembly 5 by screws 7; the lower end of the conical intercepting screen 9 is connected with the valve body 1 by screws, and the conical inter...

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Abstract

The invention discloses an expansion valve, which comprises a valve body 1. A combined sealing ring 2 and a plunger piston 3 for controlling medium flow are arranged in a cavity inside the valve body 1; the upper part of the combined sealing ring 2 is provided with a valve cover 6 for positioning the combined sealing ring 2, and the valve cover 6 is fixedly arranged on the valve body 1; a valve rod assembly 5 is arranged on the plunger piston 3, and the lower part of the valve rod assembly 5 is provided with a condensate baffle plate 4; a conical intercepting screen 9 is arranged at a lower medium inlet A of the valve body 1, and the upper end of the conical intercepting screen 9 is provided with a hemispherical steam screen 8. By simplifying the internal structure of the expansion valve and a control element, the expansion valve reduces the medium flowing energy loss, has large treatment amount of refrigerating medium, simplifies a driving control device, and is convenient to maintain and operate.

Description

technical field [0001] The invention relates to an expansion valve with a plunger valve element. Background technique [0002] In the prior art, in the steam refrigeration cycle system, the expansion valve is mainly designed to generate refrigeration steam by using the interception principle, but the traditional expansion valve needs to be equipped with a control system and an additional evaporator. With the increase of the medium processing capacity, the expansion The price of valves and supporting facilities has also increased accordingly. In addition, the closure of the traditional expansion valve leads to a large loss of medium flow energy. Contents of the invention [0003] The purpose of the present invention is to address the defects in the prior art, thereby designing an expansion valve, which reduces the energy loss of the medium flow by simplifying the internal structure of the expansion valve and the control elements, and has a large processing capacity for the...

Claims

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Application Information

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IPC IPC(8): F16K31/64F16K47/08
Inventor 余龙俞树荣
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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