JP-7857008-B2 - Shut-off valve for gas engines

Inventors

• 胡 栄杰

Assignees

• 株式会社工進

Dates

Publication Date

20260512

Application Date

20220420

Claims (1)

1. A shut-off valve for a gas engine comprising a diaphragm that operates under negative pressure, a shut-off rod connected to the diaphragm, a valve body actuated by the shut-off rod, and a valve seat that is opened and closed by the valve body, Between the shut-off rod and the valve body, One end is rotatably supported, The projection provided at the other end is biased and pressed against the tip surface of the blocking rod, and is also pressed against by the tip surface of the blocking rod, A shut-off valve for a gas engine, characterized by having a shut-off lever that presses the valve body in the middle using the principle of leverage and reciprocates the valve body in the axial direction to open and close the valve seat.

Description

Application of Article 30, Paragraph 2 of the Patent Law (1) https://www.makuake.com/project/koshin/ https://www.makuake.com/project/koshin/communication/ Website publication date: January 28, 2022 (2) A gas generator (GV-9ig) equipped with the gas engine shut-off valve according to the present invention was shipped. Shipment dates: April 6-18, 2022 (3) Exhibited at an outdoor festival held at Expo Commemoration Park. Exhibition dates: March 5th and 6th, 2022 (4) A gas generator (GV-9ig) equipped with the gas engine shut-off valve according to the present invention was shipped for loan and published on page 58 of the monthly magazine GetNavi (released on the 24th of each month), Vol. 24, No. 5, Issue 277. Shipping date: February 14th, 2022 Release date: March 24th, 2022 (5) A gas generator (GV-9ig) equipped with the gas engine shut-off valve according to the present invention was shipped for loan and posted on the web. Shipping date: February 3rd, 2022 https://dime.jp/gene/1314005/ Website publication date: February 5th, 2022 https://dime.jp/gene/1314005/ jp/gene/1325523/ Website publication date: February 23, 2022 https://www.youtube.com/watch?v=fcoUBo9dLBc Website publication date: February 22, 2022 (6) https://prtimes.jp/main/html/rd/p/000000001.000094544.html Website publication date: January 28, 2022 This invention relates to an improvement on a shut-off valve used in a fuel supply system for a gas engine. Conventionally, shut-off valves for gas engines are known that shut off the fuel supply to the gas engine when the gas engine stops (see, for example, Patent Document 1). Patent No. 5063491 This is a system diagram of a gas engine fuel supply system to which the gas engine shut-off valve according to the present invention is applied.This is a perspective view showing a shut-off valve integrated regulator, which integrates a shut-off valve and a primary regulator for a gas engine according to the present invention.Figure 2 is a perspective view of the shut-off valve integrated regulator shown from a different angle.Figure 2 is a front view of the shut-off valve integrated regulator shown.This is a cross-sectional view taken along line A-A in Figure 4.Figure 5 is an enlarged cross-sectional view of the main part.Figure 4 is a cross-sectional view taken along line A-A, showing the operating state of the shut-off valve integrated regulator.Figure 7 is an enlarged cross-sectional view of the main part.Figure 4 is a cross-sectional perspective view along line B-B.This is a cross-sectional view taken along line C-C in Figure 4.This is a cross-sectional view taken along line D-D in Figure 4.Figure 11 is an enlarged cross-sectional perspective view of the main part of the primary regulator shown.Figure 4 is a front view with the decompression chamber exposed.This is a front view showing the state after the connecting body has been removed from Figure 13.This is a front view showing the regulator lever removed from Figure 14.Figure 6 is an overall perspective view of the circuit breaker lever shown. An embodiment of the shut-off valve for a gas engine according to the present invention will be described with reference to Figures 1 to 16. Figure 1 is a system diagram of a gas engine fuel supply system to which the gas engine shut-off valve according to the present invention is applied. The gas engine fuel supply device consists of a small gas cylinder 10 filled with, for example, liquefied butane as liquefied gas fuel; a manual cock 11 connected via a cylinder case (not shown) for switching the flow of liquefied gas fuel from the small gas cylinder 10 or shutting it off; a vaporizer 12 that vaporizes the liquefied gas fuel (liquefied butane) using the heat generated by the gas engine 18; a shut-off valve 13 that allows the gas fuel vaporized by the vaporizer 12 to flow while the gas engine 18 is running and shuts it off when the gas engine 18 is stopped; a primary regulator 14 assembled integrally with the shut-off valve 13 to reduce the gas fuel to a predetermined pressure; a secondary regulator 16 that reduces the gas fuel reduced by the primary regulator 14 to a pressure close to atmospheric pressure; and a mixer 17 that mixes the gas fuel reduced by the secondary regulator 16 with air to generate a mixture. A heater 15 is attached to the shut-off valve 13. Furthermore, the shut-off valve 13 and the primary regulator 14 are assembled as a single unit to form a shut-off valve integrated regulator 20. The air-fuel mixture generated in the mixer 17 is drawn into the combustion chamber 18b of the gas engine 18 via the intake port 18a, and the combustion gas generated in the combustion chamber 18b is discharged from the exhaust port 18c. The crankcase 18d of the gas engine 18 is connected to the shut-off valve 13. Furthermore, the aforementioned vaporizer 12 is positioned near the exhaust port 18c. Figures 2 to 15 illustrate the shut-off valve integrated regulator 20. The shut-off valve integrated regulator 20 is