CN200985840Y

CN200985840Y - Gasification pressure reducers

Info

Publication number: CN200985840Y
Application number: CNU2006200762044U
Authority: CN
Inventors: 赵旭
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-04
Filing date: 2006-08-04
Publication date: 2007-12-05
Anticipated expiration: 2016-08-04

Abstract

The utility model relates to a gasification decompressor applying to the liquid petroleum supplying system of the large efficiency fuel engine of the vehicles, which is composed of a valve, a gasifying chamber, a decompressing mechanism, a subpressure film component and a matching rocker switch, and is characterized in that the decompressor is composed of an air inlet chamber spring, a decompressing valve core, a top rod, a permenant pressure film, a permenant pressure spring and a permenant pressure chamber; the permenant pressure film, the permenant pressure spring and the permenant pressure chamber are arranged in the permenant pressure chamber, the decompressing valve core is of a cone shape and is fitted with the switch of the sealing surface of the air inlet passage, the air inlet chamber spring and the decompressing valve core is connected at a side of the permenant pressure film through the top rod, the permanent pressure spring is pushed on the other side of the permanent pressure film, the air inlet chamber spring is arranged at the air inlet side of the decompressing valve core and is pushed on the decompressing valve. The decompressing mechanism is adopted a cone shaped valve core and a permanent pressure chamber, which make the utility mode applicable to the large efficient engine and provide a characteristic of a more reliable decompression.

Description

The gasification decompressor

Technical field:

The utility model relates to a kind of gasification decompressor that is applied to gas combustion automobile motor LPG liquefied petroleum gas (LPG) supply system, especially is applied to the gasification decompressor of high power gas motor car engine LPG liquefied petroleum gas (LPG) supply system.

Background technique:

The gasification decompressor that arrives commonly used in gas combustion automobile motor LPG liquefied petroleum gas (LPG) supply system, its kind is more, and the most frequently used structure comprises valve body, gasification chamber, the mechanism of decompressor, negative cavity and switch springboard parts.The mechanism of decompressor adopts the lever construction of baffle-type usually, comprises decompression diaphragm, decompressing baffle plate, decompression lever and relief spring, and switch springboard parts comprise springboard switch, springboard spring, springboard connecting rod and negative pressure diaphragm.Bottom at valve body is provided with intake interface, and the LPG liquefied petroleum gas (LPG) enters negative cavity through intake interface, pressure loading valve, gasification chamber, springboard switch, enters motor and burn under the pull of vacuum of motor.In order better to reach the effect of gasification, also be provided with the heating water channel in the periphery of gasification chamber.This type of gasification decompressor that uses in the prior art, because of mechanism of decompressor employing is the lever construction of baffle-type, opening and closing continually in use, the pressure surge of gasification chamber is bigger, has influence on the pressure of negative cavity, thereby unfavorable to the work of motor, when particularly being applied to the high-powered automobiles motor, the gas consumption of motor is big, and gasification decompressor of the prior art can't satisfy the requirement of motor.

The model utility content:

The purpose of this utility model is to provide a kind of and can be applicable to high power engine, the decompression decompressor that gasifies more stably for overcoming the deficiencies in the prior art.

Technical solution of the present utility model is: a kind of gasification decompressor, comprise valve body, gasification chamber, the mechanism of decompressor, negative pressure film chip part and switch springboard parts, it is characterized in that: the described mechanism of decompressor comprises the air-inlet cavity spring, relief pressure valve cartridge, push rod, the constant voltage diaphragm, constant force spring and constant voltage chamber, the constant voltage diaphragm, constant force spring is arranged in the constant voltage chamber, relief pressure valve cartridge is conical, relief pressure valve cartridge cooperates with gas-entered passageway sealing surface switch, the air-inlet cavity spring, relief pressure valve cartridge is connected with constant voltage diaphragm one side by push rod, described constant force spring is against the opposite side of constant voltage diaphragm, and the air-inlet cavity spring is arranged on the air inlet side of relief pressure valve cartridge and is against on the relief pressure valve cartridge.

Compared with prior art, the beneficial effects of the utility model are: because of the mechanism of decompressor adopts conical valve cored structure and constant voltage chamber, make the utility model gasification decompressor can be applicable to high power engine, the tool and the characteristics more stably that reduce pressure.

Below in conjunction with the drawings and specific embodiments the utility model is further described.

Description of drawings:

Fig. 1 is the sectional structure chart of the utility model specific embodiment;

Embodiment:

As shown in Figure 1, the utility model gasification decompressor comprises valve body 1, gasification chamber 2, the mechanism of decompressor 3, negative pressure film chip part 4 and switch springboard parts 5, and gasification chamber 2 is made of down cavity and lower cover 11 in the valve body 1.The heating water channel 6 that is provided with in gasification chamber 2 peripheries of valve body 1 is in order to reach gasification completely after the decompression of LPG liquefied petroleum gas (LPG).The mechanism of decompressor 3 comprises intake interface 31, air-inlet cavity spring 32, relief pressure valve cartridge 33, push rod 34, constant voltage diaphragm 35, constant force spring 36 and constant voltage chamber 37, and intake interface 31 is installed on lower cover 11, and air inlet spring 32 is installed between intake interface 31 and the relief pressure valve cartridge 33.The constant voltage diaphragm, constant force spring is arranged in the constant voltage chamber, relief pressure valve cartridge is conical, relief pressure valve cartridge cooperates with gas-entered passageway sealing surface switch, the air-inlet cavity spring, relief pressure valve cartridge is connected with constant voltage diaphragm one side by push rod, described constant force spring is against the opposite side of constant voltage diaphragm, the air-inlet cavity spring is arranged on the air inlet side of relief pressure valve cartridge and is against on the relief pressure valve cartridge, constant force spring 36 promotes push rod 34 by constant voltage diaphragm 35, back down relief pressure valve cartridge 33, make the LPG liquefied petroleum gas (LPG) enter into gasification chamber 2, gasification chamber 2 communicates with constant voltage chamber 37 by pore 38, the pressure in constant voltage chamber 37 moves up constant voltage diaphragm 35, and drive push rod 34 and move up, thereby make relief pressure valve cartridge 33 reduce discharge value, when the constant voltage chamber reaches setting pressure, relief pressure valve cartridge 33 is closed fully, reaches the purpose of decompression.Pore 38 plays the current limliting damping function, in the situation of the frequent change of engine loading, when relief pressure valve cartridge 33 can be because of the pressure frequent variations of gasification chamber and occur beating or vibrate and so on extremely unsettled situation.Negative pressure film chip part 4 comprises negative pressure inner chamber 40, negative pressure exocoel 41, air outlet 42, motor vacuum tube interface 43 and negative pressure diaphragm 44, and switch springboard parts 5 comprise switch plate 51, springboard 52 and springboard spring 53.Negative pressure diaphragm 44 moves down under the pull of vacuum of motor, promotes springboard 52 Unscrew switch plates 51, the LPG liquefied petroleum gas (LPG) of gasification chamber 2 is entered in the negative cavity 4 use for motor.Characteristics of the present utility model are that also relief pressure valve cartridge 33 has adopted taper shape, and unlatching and closed process at spool 33 seldom produce gas eddy stream, make decompression process more steady.

Of the present utility model being further characterized in that: negative pressure exocoel 41 connects with the vacuum tube of motor by motor vacuum tube interface 43, in the time period that motor stops suction, the motor vacuum tube has vacuum and produces, what negative pressure exocoel 41 produced at this moment can cooperate springboard spring 53 switch plate 51 in time can be closed to upper pulling force, make the utility model in use can be better and the work interlock of motor, be quick on the draw, power character is strong.

By as seen above-mentioned,, make the utility model gasification decompressor can be applicable to high power engine, and have the characteristics more stably that reduce pressure because of the mechanism of decompressor adopts conical valve cored structure and constant voltage chamber.

Claims

One kind the gasification decompressor, comprise valve body, gasification chamber, the mechanism of decompressor, negative pressure film chip part and switch springboard parts, it is characterized in that: the described mechanism of decompressor comprises the air-inlet cavity spring, relief pressure valve cartridge, push rod, the constant voltage diaphragm, constant force spring and constant voltage chamber, the constant voltage diaphragm, constant force spring is arranged in the constant voltage chamber, relief pressure valve cartridge is conical, relief pressure valve cartridge cooperates with gas-entered passageway sealing surface switch, the air-inlet cavity spring, relief pressure valve cartridge is connected with constant voltage diaphragm one side by push rod, described constant force spring is against the opposite side of constant voltage diaphragm, and the air-inlet cavity spring is arranged on the air inlet side of relief pressure valve cartridge and is against on the relief pressure valve cartridge.
2, gasification decompressor according to claim 1 is characterized in that: described negative pressure film chip part comprises negative pressure inner chamber and negative pressure exocoel, and the negative pressure inner chamber connects with engine intake valve, the negative pressure exocoel connects with the motor vacuum tube.