CN201003438Y

CN201003438Y - General minisize gas engine gas mixer

Info

Publication number: CN201003438Y
Application number: CNU2007201058626U
Authority: CN
Inventors: 蒋志明; 王书娟; 韩冰
Original assignee: MENG RONGSHUI
Current assignee: Shaoxing General Engine Manufacturing Co., Ltd.
Priority date: 2007-01-24
Filing date: 2007-01-24
Publication date: 2008-01-09
Anticipated expiration: 2017-01-24

Abstract

The utility model discloses a gas mixer for the small universal gas engine, which mainly comprises four parts of an air and fuel gas mixing airway, a flow control valve of fuel gas, an automatic disconnecting device of fuel gas and a pressure stabilizing chamber. The aforesaid four parts are organically combined so as to greatly simplify the structure of the product and greatly reduce the weight and volume on the premise of realizing the same functions. At the same time, the utility model has the advantages of stable performance, full gas combustion, strong practicability and low price. The rational design of disconnecting valve prevents the liquid gas from leaking out of service and makes the gas mixer be safe and reliable for using.

Description

The gas mixer of general small-size gas engine

Technical field

The utility model relates to a kind of gas mixer of general small-size gas engine, belongs to the power plant field.

Background technique

Existing general small-size motor petrol engine or two kinds of types of diesel engine that adopt more, along with the integrating with of international market, for satisfying the requirement of overseas market to environment protecting type engine, some gas resource-rich countries and area also increase day by day to the demand that gas starts, therefore, in recent years, the development of gas engine is very fast, and the key of gas engine is that the mixing arrangement of air and combustion gas is an air mixer, for the general small-size gas engine, design a kind of rational in infrastructurely, can provide the air mixer of greater efficiency when saving volume is the key of its quality of product.

The model utility content

For addressing the above problem, it is a kind of rational in infrastructure that the purpose of this utility model is to provide, and has the smaller size smaller and the gas mixer of general small-size gas engine efficiently.

The utility model takes following technological scheme to realize above-mentioned purpose, a kind of gas mixer of general small-size gas engine, comprise air and combustion gas mixing air flue I on installation and the mixer body, gas flow control device II, combustion gas automatic cut off device III, stable-pressure device IV, it is characterized in that: stable-pressure device IV is installed in the bottom left of mixer body, the combustion gas automatic cut off device III that links to each other with stable-pressure device IV is installed in the bottom of mixer body, gas flow control device II is installed on the mixer body and with combustion gas automatic cut off device III and is connected, and air and combustion gas mixing air flue I are installed in the mixer upper part of body.

Air and combustion gas mixing air flue I be by trunnion 31, chock plate 16, and gas jet orifice 29, closure 30 is formed.Air stream is through chock plate 16, and trunnion 31 flows out from closure 30.

Gas flow control device II comprises gas flow control valve 28, gas flow control valve 28 passes air flue and is contained on the mixer body 14, and be hinged by steel wire with the arrangements for speed regulation of motor, its lower hollow, side is opened an aperture, and this aperture is corresponding with the blast tube on the mixer body 14.

Combustion gas automatic cut off device III by cut off valve seat 13, cut-off valve silently 21, cut-off valve slide bar 24, cut off valve pocket 19, cut-off valve diaphragm 20, spring 23, spring seat 22, negative pressure chamber cap 25, elbow 15 etc. and form, cutting off valve seat 13 is fitted on the body 14, cut-off valve silently 21 is contained in cut-off valve slide bar 24 tops, cut-off valve slide bar 24 is riveted together with diaphragm 20, by 4 screws negative pressure chamber cap 25, cut-off valve diaphragm 20 is pressed on the mixer body 14 during installation.

Plenum IV is by suction valve pipe 3, suction valve assembly 5, suction valve rotating shaft 4, plenum diaphragm unit 6, spring 8, voltage stabilizing chamber cap 7, adjust double-screw bolt 9, locking nut 10 compositions such as grade, suction valve pipe 3 is fitted on the mixer body 14, suction valve assembly 5 is fixed on the mixer body 14 by suction valve rotating shaft 4, suction valve assembly 5 can move into air valve rotating shaft 4 rotations, and its other end is connected on the plenum diaphragm unit 6, plenum diaphragm unit 6, voltage stabilizing chamber cap 7 is by on bolt motionless mixer body 14 successively, adjust bolt 9 and be screwed on the voltage stabilizing chamber cap 7 with locking nut 10, spring 8 is contained in to be adjusted between bolt 9 and the plenum diaphragm 6.

The beneficial effects of the utility model are: because the utility model is integrated in air and combustion gas mixing air flue I, gas flow control device II, combustion gas automatic cut off device III, stable-pressure device on the mixer body, simplified the structure of product greatly, reduced its quality and volume under the prerequisite that realizes identical function greatly, it also has advantages such as stable performance, combustion gas is abundant, practical, price is lower simultaneously; Secondly, since the design's product with the Position Design of pressure stabilizing cavity 12 in the left side, greatly facilitate the pressure regulation operation like this, and owing to be placed on the left side and significantly reduced residue and remain in quantity on the plenum diaphragm 6 because of action of gravity, the aging of plenum diaphragm 6 that slowed down, thereby improved its working life.

The utility model is described in further detail below in conjunction with echoing specific embodiment.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the Y-Y sectional view of Fig. 1.

Number in the figure: I-air and fuel gas mixer road, the II-gas flow control device, III-combustion gas automatic cut off device, the IV-stable-pressure device, the 1-air input joint, the 2-blast tube, the 3-inlet valve seat, the rotating shaft of 4-suction valve, 5-suction valve assembly, 6-plenum diaphragm, 7-voltage stabilizing chamber cap, the 8-spring, 9-adjusts bolt, the 10-locking nut, 11-atmospheric equilibrium chamber I, the 12-pressure stabilizing cavity, 13-cuts off valve seat, 14-mixer body, the 15-elbow, the 16-chock plate, 17-atmospheric equilibrium chamber II, the 18-negative cavity, 19-cut-off valve sliding sleeve, 20-cut-off valve diaphragm, the 21-cut-off valve silently, the 22-spring housing, the 23-spring, 24-cut-off valve slide bar, 25-negative pressure chamber cap, 26-plug I, 27-plug II, the 28-gas flow control valve, the 29-gas jet orifice, 30-moral door, the 31-trunnion

Embodiment

With reference to Fig. 1, shown in Figure 2, the utility model comprise install with mixer body 14 on air and combustion gas mixing air flue I, gas flow control device II, combustion gas automatic cut off device III, stable-pressure device IV.

Air and combustion gas mixing air flue I are by trunnion 31, chock plate 16, gas jet orifice 29, closure 30 is formed, and air stream is through chock plate 16, trunnion 31, flow out from closure 30, because of the certain degree of vacuum of the mobile generation of air, gaseous-pressure is higher than atmospheric pressure at trunnion 31 places, can directly spray into trunnion 31 from gas jet orifice 29.When engine speed increased, air increased at trunnion 31 place's flow velocitys, produces bigger degree of vacuum, and more combustion gas meeting sprays into trunnion 31.

Gas flow control valve 28 passes air flue and is contained on the mixer body 14, control valve 28 lower hollow, side is opened an aperture, this aperture is corresponding with the blast tube on the mixer body 14, gas flow control valve 28 is articulated on the arrangements for speed regulation of motor by steel wire, the lower hollow place of combustion gas by gas flow control valve 28 enters blast tube on the mixer body 14 through the side aperture.Arrangements for speed regulation are by the rotation of hinged steel wire control gas flow control valve 28.Rotation by control gas flow control valve 28 can be adjusted the degree of correspondence of side aperture and blast tube, thus the may command gas flow.

Combustion gas automatic cut off device III is arranged on the bottom of mixer body 14, it is by cutting off valve seat 13, cut-off valve silently 21, cut-off valve slide bar 24, cut off valve pocket 19, cut-off valve diaphragm 20, spring 23, spring seat 22, negative pressure chamber cap 25, elbow 15 compositions such as grade, cutting off valve seat 13 is fitted on the body 14, cut-off valve silently 21 is contained in cut-off valve slide bar 24 tops, cut-off valve slide bar 24 is riveted together with diaphragm 20, pass through 4 screws negative pressure chamber cap 25 during installation, cut-off valve diaphragm 20 is pressed on the mixer body 14, cut-off valve diaphragm 20 forms two chambeies up and down. and top is atmospheric equilibrium chamber 17, Pneumatic pipe cleaner small holes and atmospheric equilibrium.Cut-off valve diaphragm 20 bottoms are negative cavity 18, communicate when motor moves with flexible pipe and engine inlets by elbow 15, engine inlets produce certain negative pressure, cut-off valve diaphragm 20 produces pressure reduction up and down moves downward cut-off valve diaphragm 20, thereby opens cut-off valve, makes blast tube unimpeded. when the motor stop motion, engine inlets air pressure and atmospheric equilibrium, cut-off valve diaphragm 20 does not have pressure reduction up and down, and spring 23 up pushes up cut-off valve diaphragm 20, thereby has cut off blast tube.

Plenum IV is by the suction valve pipe, compositions such as suction valve assembly 5, suction valve rotating shaft 4, plenum diaphragm unit 6, spring 8, voltage stabilizing chamber cap 7, adjustment double-screw bolt 9, locking nut 10, plenum IV is arranged in mixer body 14 sidepieces, and plenum diaphragm 6 is vertically placed.So both prevented the deposition of LPG raffinate, made things convenient for the adjustment of plenum pressure again at plenum diaphragm 6.Suction valve pipe 3 is fitted on the mixer body 14, suction valve assembly 5 is fixed on the mixer body 14 by suction valve rotating shaft 4, suction valve assembly 5 can move into air valve rotating shaft 4 rotations, and its other end is connected on the

plenum diaphragm unit

6,4 bolts are with plenum diaphragm unit 6, voltage stabilizing chamber cap 7 is successively on the motionless mixer body 14, adjusting bolt 9 is screwed on the voltage stabilizing chamber cap 7 with locking nut 10, spring 8 is contained in to be adjusted between bolt 9 and the plenum diaphragm 6, after the installation, plenum diaphragm 6 both sides form two chambeies, pressure stabilizing cavity 12 and atmospheric equilibrium chamber 11, atmospheric equilibrium chamber 11 communicates with atmosphere by the aperture of adjusting on the bolt 9. when pressure stabilizing cavity pressure during greater than predetermined pressure, it is moving to spring 8 one thrusters with pressure stabilizing cavity diaphragm 6 with atmospheric pressure that it overcomes spring 8, thereby driving suction valve assembly 5 rotates, close blast tube, when pressure stabilizing cavity 12 pressure during less than predetermined pressure, spring 8 is moving to suction valve 5 one thrusters with plenum diaphragm 6, thereby driving suction valve assembly 8 rotates, open blast tube, so just can make the interior combustion gas of pressure stabilizing cavity a predetermined value, and by adjusting bolt, can adjust the pretightening force of spring, thereby reach the purpose of adjusting predetermined pressure.

When engine running, combustion gas enters into stable-pressure device IV by air input joint 1, gas-entered passageway 2, by the synergy of component such as the suction valve assembly 5 among the stable-pressure device IV, plenum diaphragm unit 6, spring 8, locking nut 10, adjustment screw 9 voltage stabilizing is carried out in combustion gas; Gas behind pressure stabilization function passes through combustion gas automatic cut off device III successively, and gas flow control valve 28 enters trunnion 31 by gas jet orifice 29 at last, with the air mixing that is inhaled into from chock plate 16, realizes synthetic mixed gas.Can regulate the aperture size of closure 30 and gas flow control valve II automatically by mechanical adjustable speed drive, and play the effect of stablizing engine speed.

Claims

1, a kind of gas mixer of general small-size gas engine, comprise air and combustion gas mixing air flue (I) on installation and the mixer body (14), gas flow control device (II), combustion gas automatic cut off device (III), stable-pressure device (IV), it is characterized in that: stable-pressure device (IV) is installed in the bottom left of mixer body (14), the combustion gas automatic cut off device (III) that links to each other with stable-pressure device (IV) is installed in the bottom of mixer body (14), gas flow control device (II) is installed in mixer body (14) and upward and with combustion gas automatic cut off device (III) is connected, and air and combustion gas mixing air flue (I) are installed in the top of mixer body (14).

2, the gas mixer of a kind of general small-size gas engine according to claim 1 is characterized in that: air and combustion gas mixing air flue (I) are made up of trunnion (31), chock plate (16), gas jet orifice (29), closure (30).

3, the gas mixer of a kind of general small-size gas engine according to claim 1, it is characterized in that: gas flow control device (II) comprises gas flow control valve (28), gas flow control valve (28) is contained on the mixer body (14), and be hinged by steel wire with the arrangements for speed regulation of motor, its lower hollow, side is opened an aperture, and aperture is corresponding with the blast tube on the mixer body (14).

4, the gas mixer of a kind of general small-size gas engine according to claim 1, it is characterized in that: combustion gas automatic cut off device (III) comprises cut-out valve seat (13), cut-off valve is (21) silently, cut-off valve slide bar (24), cut off valve pocket (19), cut-off valve diaphragm (20), spring (23), spring seat (22), negative pressure chamber cap (25), elbow (15), cutting off valve seat (13) is installed on the mixer body (14), cut-off valve silently (21) is contained in cut-off valve slide bar (24) top, cut-off valve slide bar (24) is riveted together with cut-off valve diaphragm (20), and cut-off valve diaphragm (20) is pressed on the mixer body 14 by negative pressure chamber cap (25).

5, the gas mixer of a kind of general small-size gas engine according to claim 1, it is characterized in that: plenum (IV) comprises suction valve pipe (3), suction valve assembly (5), suction valve rotating shaft (4), plenum diaphragm unit (6), spring (8), voltage stabilizing chamber cap (7), adjust double-screw bolt (9), locking nut (10), suction valve pipe (3) is fitted on the mixer body (14), suction valve assembly (5) is fixed on the mixer body (14) by suction valve rotating shaft (4), suction valve assembly (5) other end is connected on the plenum diaphragm unit (6), plenum diaphragm unit (6), voltage stabilizing chamber cap (7) is by on bolt motionless mixer body (14) successively, adjust bolt (9) and be screwed on the voltage stabilizing chamber cap (7) with locking nut (10), spring (8) is contained in to be adjusted between bolt (9) and the plenum diaphragm (6).