The utility model discloses a significant amount of pressure reducing valve mainly by the valve body, the gas film, a pressure adjusting device, the valve body is provided with an air inlet and outlet valve cavity is arranged between the air inlet and the air outlet, the valve cavity articulated with gas control lever, and the rear end of the gas pressure control lever the pneumatic rod connecting device, which is located in front of the inlet near the central gas regulating rod and fixed fixed around the valve on the gas film, the middle of the film against the pressure regulating device, which is improved in a bypass hole near the air inlet opening, the bypass hole and a pressure gauge connection. The utility model has the advantages of simple structure, convenient installation, reliable work, economy and practicability, and after popularization, the utility model can not only be convenient for users, but also be more convenient to ensure safety.
【技术实现步骤摘要】
本技术涉及一种减压阀，尤其涉及一种用于罐装煤气输出管路上的减压阀的结构改进。罐装煤气是目前居民常用的燃料源。现有煤气减压阀的阀腔内铰支有控气杠杆，该杠杆的后端与调气杆衔接，前端位于减压阀进气口附近，调气杆与周边固定在阀体上的气膜中部固连，该气膜中部受到调压装置的预紧力。使用罐装煤气，当出气压力过大、出气量过多时，气膜将克服调压装置预紧力向上膨起，使调气杆的后端随之向上动作，而其前端贴近进气口，从而增加出气阻力，起到降低出气压力、减小出气量的作用；反之，当出气压力过小、出气量过少时，气膜将被调压装置预紧力下压，使调气杆的后端随之向下动作，其前端离开进气口，从而减小出气阻力，起到增加出气压力、加大出气量的作用。上述减压阀由于结构简单，可以根据所调预紧力自动调节出气气压和气量，起到安全保护作用，因而被普遍采用。然而，这种减压阀也存在不足之处，即在使用中不能反映罐装煤气的贮气量，因此用户无法得知还有多少余气、何时应当换气。结果，餐炊中途断气的现象时有发生，给使用者带来不便。本技术的目的在于针对上述现有减压阀存在的不足之处，提出一种可以反映罐装煤气贮气量的显量减压阀，...
【技术保护点】
一种显量减压阀，主要由阀体、气膜、调压装置组成，阀体上开有进气孔和出气孔，进气孔和出气孔之间设有阀腔，该阀腔内铰支有控气杠杆，该控气杠杆的后端与调压装置中的调气杆衔接，其前端位于进气孔附近，调气杆与周边固定在阀体上的气膜中部固连，该气膜中部抵靠在调压装置上，其特征在于：所述进气口附近开有旁通孔，该旁通孔与一压力表连接。
【技术特征摘要】
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