JP2012527683A - Pressure reducing valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce cost and improve management efficiency by integrating a strainer, a safety valve, a pressure gauge and an exhaust valve as a unit into a decompression line of a marine engine generator, etc. Provided is a pressure reducing valve that reduces the installation weight of a required device to reduce the weight, minimizes the installation space, and facilitates assembly work.
A cylindrical membrane strainer 4 is installed between a fluid inflow hole 3 formed on one side of a pressure reducing valve 1 body 2 and an opening / closing hole 7, and is connected to one side of the inflow hole 3. A pilot valve 10 that can set a discharge pressure value with an adjusting knob 13 through 12 is installed at the top of the body 2, and a diaphragm is formed at the top of the body 2 so that pressure is communicated through the pilot valve 10. A chamber 14, a diaphragm 11 installed inside the diaphragm chamber 14, a piston 9 installed vertically in the body 2 so as to be connected to a lower part of the diaphragm 11, and a lower part of the piston 9; It is supported by a spring 8 upwardly so that the fluid discharged from the inflow hole 3 to the discharge hole 5 is opened and closed intermittently. A pressure gauge 16 is installed in the discharge hole 5 so that the pressure of the fluid to be discharged can be checked by installing a disc 6, a safety valve 15 installed at the upper connecting portion of the diaphragm 11 and the piston 9. And a residual water discharge valve 17 installed at the lower end of the body 2.
[Selection] Figure 3

Description

  The present invention relates to a pressure reducing valve (also referred to as a 'SRS' valve). More specifically, the pressure reducing valve is installed in a pressure reducing line of a marine engine generator, and the cost is reduced by unitizing a strainer, a safety valve, a pressure gauge and an exhaust valve in the pressure reducing valve. Further, the present invention relates to a pressure reducing valve that improves management efficiency, reduces the size and weight of the pressure reducing valve, minimizes the space occupancy rate, and facilitates assembly work.

  Normally, the pressure reducing valve used in the decompression line of marine engine generators is operated by installing a strainer, safety valve, pressure gauge and exhaust valve separately on the pressure reducing line. In addition to the burden of cost, there is a problem that a great amount of time and labor are required to install each device separately on site.

  Therefore, providing a single pressure reducing valve that integrates the functions of various devices that are required to be installed in the pressure reducing valve line can reduce the time and cost of installing the pressure reducing valve and the device, and managing and controlling each device. Will be more convenient. Therefore, development of a pressure reducing valve having such an integrated function has been urgently required.

  The present invention recognizes and solves the above-mentioned conventional problems, and an object of the present invention is to provide a strainer, a safety valve, a pressure gauge and an exhaust which are separately assembled and installed on a conventional pressure reducing valve line. By forming the valve integrally with the pressure reducing valve body and unitizing it, the manufacturing cost of the pressure reducing valve related piping device is reduced, the management efficiency of each device is improved, and the time required for assembly of the piping line and It is to provide a pressure reducing valve that saves costs and allows the installation space to be minimized and optimized.

  In order to achieve the technical problem described above, the present invention provides a cylindrical membrane strainer 4 between the fluid inlet hole 3 and the opening / closing hole 7 formed on one side of the body 2 of the pressure reducing valve 1. A pilot valve 10, which can set the discharge pressure value with the adjustment knob 13 through a pilot pipe 12 communicating with one side of the inflow hole 3, is installed at the upper part of the body 2, and pressure is communicated through the pilot valve 10. The diaphragm chamber 14 formed in the upper part of the body 2, the diaphragm 11 installed in the diaphragm chamber 14, and the piston installed in the body 2 in the vertical direction so as to be connected to the lower part of the diaphragm 11. 9 and connected to the lower part of the piston 9 and elastically supported upward by a spring 8 and discharged from the inflow hole 3 to the discharge hole 5. A disk 6 that opens and closes the fluid, a safety valve 15 that is installed at the upper connecting portion of the diaphragm 11 and the piston 9, and a pressure gauge 16 that is installed in the discharge hole 5 to check the pressure of the discharged fluid. A pressure reducing valve is provided, which includes a residual water discharge valve 17 installed at a lower end portion of the body 2.

  Here, the male screw 17a of the exhaust valve 17 is formed only on a part of the entire length of the exhaust valve main body 17c to prevent loss.

  The strainer 4 is in the form of a hollow cylinder that surrounds the outside of the disk 6.

  Since the pressure reducing valve of the present invention has a structure in which a strainer, a safety valve, a pressure gauge, and an exhaust valve separately installed on a conventional pressure reducing piping line can be integrated, the cost for manufacturing each device can be reduced. There are advantages that the management efficiency can be improved, the installation space can be minimized, and the assembly work of the pressure reducing valve device can be facilitated.

It is a front lineblock diagram showing one suitable example of a pressure-reduction valve provided by the present invention. It is a side lineblock diagram showing one suitable example of a pressure-reduction valve provided by the present invention. FIG. 3 is a cross-sectional configuration diagram illustrating a preferred embodiment of a pressure reducing valve provided by the present invention, in which a disk is closed. 1 is a cross-sectional configuration diagram showing a preferred embodiment of a pressure reducing valve provided by the present invention, and is a state diagram in which a disk is opened. FIG. FIG. 6 is a half sectional view of the exhaust valve used in the pressure reducing valve provided by the present invention.

  Hereinafter, the configuration and operating principle of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a front view showing a preferred embodiment of a pressure reducing valve provided by the present invention, FIG. 2 is a side view showing a preferred embodiment of a pressure reducing valve provided by the present invention, and FIG. FIG. 4 is a cross-sectional configuration diagram showing a preferred embodiment of the pressure reducing valve provided, in which the disk is closed, and FIG. 4 is a cross-sectional configuration diagram showing a preferred embodiment of the pressure reducing valve provided by the present invention, in which the disc is opened. FIG.

  As shown, a cylindrical membrane strainer 4 is installed in the fluid inflow hole 3 of the valve body 2 of the pressure reducing valve 1 according to the present invention. The strainer 4 is installed in a cylindrical shape that surrounds a disk 6 to be described later. That is, the strainer 4 is formed in a hollow cylinder shape so that the disk 6 is located inside.

  A disk 6 that opens and closes fluid discharged to the discharge hole 5 through the inflow hole 3 is installed on the open / close hole 7 so as to be movable up and down. A spring 8 is interposed in the lower part of the disk 6 and elastically supported upward, and the upper part is connected to the piston 9.

  The upper part of the piston 9 is connected to the lower part of a diaphragm 11 which is operated by the pressure of fluid flowing through a pilot valve 10 installed at the upper part of the body 2.

  That is, the fluid can flow into the pilot valve 10 through the pilot pipe 12 communicating with one side of the inflow hole 3, and the pilot valve 12 is placed in the upper part of the body 2 by the pressure value set in advance by the adjustment knob 13. The fluid is allowed to flow into the formed diaphragm chamber 14.

  The diaphragm 11 is installed in the diaphragm chamber 14 so that the piston 9 is pushed downward by the force generated by the flowing fluid pressure.

  As shown in the figure, a safety valve 15 is installed at the joint between the diaphragm 11 and the upper end of the piston 9 so that the fluid pressure flowing in from the primary side on the inflow hole 3 side flows in at a preset pressure or higher. In this case, the fluid pressure on the secondary side on the discharge hole 5 side flows into the sensing pipe 18 and pushes up the diaphragm 11, thereby serving to relieve the excess pressure equal to or higher than the set pressure.

  The discharge hole 5 is provided with a pressure gauge 16 so that the pressure of the fluid discharged to the secondary side can be checked in advance. Since the pressure gauge 16 is integrally formed on the flow path of the discharge hole 5, it is not necessary to install it separately on the decompression line.

  An exhaust valve 17 is installed at the lower end of the body 2 to discharge residual water remaining in the valve body 2 or air generated by the fluid in the body 2. The exhaust valve 17 is formed such that a valve body 17c having a male screw 17a formed on the outer peripheral surface thereof is screwed into the valve housing 17d, and opens and closes the flow path by operating the adjustment handle 17b. At this time, as shown in FIG. 5, the male screw 17a is formed only on a part of the entire length of the exhaust valve body 17c, thereby preventing the exhaust valve body 17c from being lost during use.

  The pressure reducing valve 1 having the above-described configuration is mainly used by being installed in a pressure reducing line of a marine engine generator. In particular, the strainer 4, the safety valve 15, the pressure gauge 16 and the exhaust valve 17 are integrated with the pressure reducing valve 1. By unitizing, the installation area can be minimized by reducing the volume of the product, the required equipment for the decompression line can be reduced, and the installation process can be simplified.

  In the initial state, the pressure reducing valve 1 of the present invention stands by in a closed state. If the fluid flows into the primary inflow hole 3, the pressure reducing valve 1 moves to the pilot valve 10 side through the pilot pipe 12. It moves to the diaphragm chamber 14 by the discharge pressure value set by the pilot valve 10. At this time, when the diaphragm 11 is lowered by the pressure and the piston 9 is lowered to push out the disk 6 connected to the lower end of the piston 9, the disk 6 elastically supported upward by the spring 8 is lowered. Thus, the pressure reducing valve 1 is opened, and the fluid is discharged to the secondary side at the discharge pressure set in advance through the discharge hole 5.

  In the present invention, in particular, since the strainer 4 is built in the pressure reducing valve 1, it is not necessary to install it separately before and after the pressure reducing line, and the pressure gauge 16 is installed in the discharge hole 5 of the body 2. Measurement is facilitated, and an exhaust valve 17 that discharges the remaining water and air inside the body 2 is installed at the lower end of the body 2, thereby removing elements that hinder the operation of the pressure reducing valve 1. When the exhaust valve 17 is opened, only a part of the male screw 17a is formed so as not to be separated at all, so that it is possible to prevent the risk of loss in advance when used on a ship. Furthermore, the safety valve 15 performs the safety function of the pressure reducing valve by automatically discharging the excess pressure when the inflowing fluid is higher than the set pressure.

  As described above, specific examples are described in the detailed description of the present invention, but the technical scope of the present invention should not be construed as being limited thereto, and the protection scope of the present invention is not limited thereto. It should be construed to include all modifications that fall within the scope of the appended claims and their equivalents.

  The present invention relates to a pressure reducing valve, and particularly when installed in a ship pressure reducing line, etc., minimizes the weight, number and installation area of devices installed in the pressure reducing line, improves management efficiency and reduces manufacturing costs. Will be able to achieve. Therefore, the pressure reducing valve of the present invention is particularly suitable for a moving means such as a ship whose installation area is limited, and thus can be said to be particularly highly utilized in the shipbuilding industry.

DESCRIPTION OF SYMBOLS 1 Pressure reducing valve 2 Body 3 Inflow hole 4 Strainer 5 Discharge hole 6 Disc 7 Opening / closing hole 8 Spring 9 Piston 10 Pilot valve 11 Diaphragm 12 Pilot pipe 13 Adjustment knob 14 Diaphragm chamber 15 Safety valve 16 Pressure gauge 17 Exhaust valve 17a Male thread 18 Sensing pipe

Claims (3)

Between the fluid inflow hole 3 and the opening / closing hole 7 formed on one side of the body 2 of the pressure reducing valve 1, a cylindrical membrane strainer 4 is installed.
A pilot valve 10 is provided at the top of the body 2 so that the discharge pressure value can be set by the adjustment knob 13 through a pilot pipe 12 communicating with one side of the inflow hole 3.
A diaphragm chamber 14 formed on the upper portion of the body 2 so that pressure is communicated through the pilot valve 10;
A diaphragm 11 installed inside the diaphragm chamber 14;
A piston 9 installed vertically on the body 2 so as to be connected to the lower portion of the diaphragm 11;
A disk 6 connected to the lower portion of the piston 9 and elastically supported upward by a spring 8 to open and close the fluid discharged from the inflow hole 3 to the discharge hole 5;
A safety valve 15 installed at a connecting portion of the diaphragm 11 and the upper portion of the piston 9;
A pressure gauge 16 is installed in the discharge hole 5 so that the pressure of the discharged fluid can be checked.
A pressure reducing valve comprising a residual water discharge valve 17 installed at a lower end of the body 2.   The pressure reducing valve according to claim 1, wherein the male screw 17a of the exhaust valve 17 is formed only on a part of the entire length of the exhaust valve main body 17c to prevent loss.   The pressure reducing valve according to claim 1 or 2, wherein the strainer (4) has a hollow cylindrical shape surrounding the outside of the disk (6).

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