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Pressure reducing valve
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A pressure reducing valve and pressure reducing chamber technology, applied in the field of pressure reducing valves, can solve problems such as complex configuration, increased processing costs, and increased processing hours
Active Publication Date: 2019-10-29
JTEKT CORP
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Problems solved by technology
This increases the size of the housing of the pressure reducing valve in which each flow path is formed, and even increases the size of the pressure reducing valve.
In addition, when each flow path is formed by processing, the arrangement of each flow path is complicated, so the processing man-hours increase and the processing cost increases.
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no. 1 approach
[0020] 1-1. Composition of pressure reducing valve 10
[0021] Hereinafter, the first embodiment of the pressure reducing valve will be described based on the drawings. figure 1 The illustrated pressure reducing valve (regulator) 10 is provided in the middle of a fluid circuit connecting a hydrogen tank mounted on a fuel cell vehicle and a fuel cell, and decompresses high-pressure hydrogen gas and sends it to the fuel cell side.
[0022] In addition, such as figure 1 , figure 2 As shown, the pressure reducing valve 10 includes: a housing 20 formed with an input port 21 and an output port 22, a valve mechanism 30 provided in the housing 20 between the input port 21 and the output port 22, and an opening adjustment valve mechanism 30 The pressing mechanism 40 and the safety valve 60 of the same amount (opening degree).
[0023] In addition, in each drawing, in order to help understanding of the drawings, arrows indicating directions of the X-axis, Y-axis, and Z-axis are described. In...
no. 2 approach
[0063] Next, the second embodiment will be described. In the pressure reducing valve of the second embodiment, such as Figure 8 As shown in the schematic diagram, the auxiliary flow path may also be the leakage check flow path 301 connected to the auxiliary port 301a for leak check when the valve mechanism 30 is closed, and the safety valve for the safety valve connected to the auxiliary port 302a for the safety valve 流路302。 302。 Flow path 302.
[0064] At this time, the output flow path 128 extending to the output port 122 is arranged, for example, to be orthogonal to the delivery flow path 125 connected to the branch portion 129, and to be connected to the leakage check flow path 301 and the safety valve branched at the branch portion 129. The flow paths 302 are also orthogonal. In other words, the center lines C1, C3, and C4 of the delivery flow path 125, the leak check flow path 301, and the safety valve flow path 302 are arranged on the same plane (X-Z plane). According to...
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Abstract
A pressure reducing valve (10) includes a housing (20) having an input port (21), an input channel (24) connected to the input port (21), a pressure reducing chamber (51) connected to the input channel (24), a delivery channel (25, 125) connected to the pressure reducing chamber (51), an output channel (28, 128) and an auxiliary channel (201, 202, 301, 302) branched off from the delivery channel (25, 125), an output port (22) connected to the output channel (28, 128), and an auxiliary port (201a, 202a, 301a, 302a) connected to the auxiliary channel (201, 202, 301, 302); and a valve mechanism (30) which is provided inside the pressure reducing chamber (51) connected to the delivery channel (25, 125) and of which the amount of opening is changed to regulate the pressure inside the pressure reducing chamber (51). Centerlines of the delivery channel (25, 125), the output channel (28, 128), and the auxiliary channel (201, 202, 301, 302) are arranged in the same plane.
Description
Technical field [0001] The invention relates to a pressure reducing valve. Background technique [0002] As a pressure reducing valve (regulator) used for pressure adjustment of high-pressure hydrogen for fuel cell vehicles, there is a structure with a valve mechanism between the input port (primary port) and the output port (secondary port) (for example, Japanese special Open 2017-204245). In this pressure reducing valve, the piston in the pressure reducing chamber slides based on the pressure of the gas flowing into the pressure reducing chamber (secondary chamber) from the input port via the valve mechanism, and the sliding of the piston changes the opening amount of the valve of the valve mechanism. [0003] As a result, the high-pressure gas on the inlet side is reduced in pressure and sent to the secondary chamber via the valve mechanism. Then, the pressure-reduced gas is sent from the secondary chamber to the output port through the sending flow path and the secondary flow...
Claims
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Application Information
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