CN2409338Y - Gas engine for oil field - Google Patents

Abstract

The utility model relates to a gas engine for an oil field. A combustion chamber 17 which can enlarge capacity is arranged in a plunger 16; a cooling cavity 15 in a casing 6 is communicated with a water pump 11; a gas inlet pipe 10 and an exhaust pipe 12 are arranged on a cylinder cover 9; a mixer 22 is connected with the gas inlet pipe; a filter screen 23 and a membrane 19 matched with a spring 20 are arranged in the mixer; a gas outlet 25 can penetrate into a mixing pipe 30. The utility model utilizes natural gas mixing with air as fuel; the natural gas is incidentally generated when oil is pumped; the fuel can be inputted into an engine through the mixing of the mixer; the fuel can be ignited by a sparking plug 8 and an ignition electrode 28; the combustion chamber 17 which can enlarge capacity can make compression ratio accord with the combustion performance of the gas-air mixing.

Description

The special-purpose gas engine in oil field

The utility model relates to a kind of gas engine, specifically is exclusively used in the gas engine of oil-field oil pumper.

At present, the power plant of oil-field oil pumper generally use 1110 type diesel engine, and this motor will be made fuel with diesel oil, and it is daily to expend quite greatly, and winter, also easily knot was cured, carbon deposit easily in the cylinder.Next is that noise is big, incomplete combustion, easily discharge black smoke, and environment is caused severe contamination.Moreover this motor is to take evaporative cooling, and the body water temperature is greater than 100 ℃, and it is bad again to dispel the heat, to having very big influence in working life of complete machine.

The purpose of this utility model is exactly for overcoming the deficiency described in the background technique, and a kind of long special-purpose gas engine in oil field of fuelled with natural gas, pump circulation cooling, machine life of utilizing oil well is provided.

To achieve these goals, the utility model proposes following technical solution:

In piston, be provided with the firing chamber that increases volume, cooling chamber in the casing is communicated with water pump, cylinder cap has been provided with suction tude and outlet pipe, the spark plug that is positioned on the cylinder cap links to each other with igniting polar, with the barrier film that is provided with filter screen and cooperates in the mixer that suction tude links to each other with spring, fuel gas inlet penetrates in the mixing tube, and the upper end of the two is in same horizontal plane.Said suction tude and outlet pipe communicate with cylinder by cylinder cap.Barrier film in the mixer and gland are connected with top cover on being fixed on filter screen, and the mixer base plate is provided with air hole.In mixing tube, also has valve block.

Fig. 1: external structure of the present utility model.

The A of Fig. 2: Fig. 1 is to view.

Fig. 3: mixer structure schematic representation.

Fig. 4: the part-structure sectional view of motor.

As Fig. 1, Fig. 2, shown in Figure 4, the utility model mainly is to be made of casing 6, cylinder cap 9, flywheel 2, generator 14, belt pulley 3,4, water pump 11, mixer 22 (referring to Fig. 3).Wherein, piston 16 moves reciprocatingly in the cylinder 29 of casing 6, and the firing chamber 17 of this piston 16 has than the bigger size in ordinary diesel oil machine firing chamber, to reduce the volume of compression ratio and corresponding increase firing chamber 17, combustion gas is burnt more completely.Cylinder cap 9 cooperates with casing 6, and the suction tude 10 and the outlet pipe 12 that are located on the cylinder cap 9 all communicate with cylinder 29.Igniting polar 28 is located in the cylinder cap 9, and the spark plug 8 that is positioned on the cylinder cap 9 communicates with igniting polar 28.Be provided with cooling chamber 15 in the casing 6, the cooling water in this cooling chamber 15 carries out pressures cycle by water pump 11.Cooling water enters water pump 11 through water inlet tap 13, is drained into by water outlet 7 again after cooling off and sets up in the water tank.Generator 14 is fixed on the casing 6, is coaxially installed with belt pulley 3,4, flywheel 2 with generator 14.Said belt pulley 3 drives pumping unit by driving belt 1, and belt pulley 4 drives water pump 11 work by belt 5.

As shown in Figure 3, a design that important component part is a mixer 22 in the utility model.This mixer 22 has a shell, is provided with a filter screen 23 in the shell, and barrier film 19 is connected with top cover 21, is provided with spring 20 between the two, and barrier film 19 also is connected with capping 18.Has air hole 24 on the base plate of mixer 22.The upper end of the mixing tube 30 that links to each other with suction tude 10 is stretched in the mixer 22, and fuel gas inlet 25 penetrates mixing tube 30 again, and the upper end of the two is in same plane and matches with capping 18.In mixing tube 30, also has a valve block 26, with the flow of control mixed gas.

This motor is fixed on the frame of pumping unit, and drives pumping unit work by driving belt 1, and the fuelled with natural gas of attaching up from oil well when utilizing oil pumping inputs to the rock gas after filtering in the mixer 22 by fuel gas inlet 25.When generator 14 work, the positive/negative pressure that is produced by piston 16 to-and-fro motion drives on the barrier film 19 and spring 20 in the mixers 22 (among Fig. 3 shown in the dotted line) by suction tude 10 and the mixing tube 30 that communicates with suction tude 10 and moves down.Simultaneously, air enters mixer 22 by air hole 24 to be mixed with rock gas, enter cylinder 29 by mixing tube 30 and suction tude 10 suctions again, can make mixed gas 17 internal combustion works done by spark plug 8 igniting polar 28 that ignites, again the motivational drive pumping unit work that to-and-fro motion produced by piston 16 in the firing chamber.

The utility model has overcome the deficiency that existing oil pumper uses 1110 diesel engines, during with oil pumping The subsidiary natural gas that produces with make fuel after air mixes, every oil pumper whenever is only fuel oil and is taken and can save Approximately nearly 30,000 yuan, greatly reduce the spent usefulness of doing fuel with diesel oil. This machine also have burning fully, The advantage such as carbon deposit, environmental pollution is little, organism temperature is low, long service life not in the cylinder is particularly suitable for oil The field oil pumping unit matching uses.

Claims (6)

1, the special-purpose gas engine in a kind of oil field, it has a casing (6), cylinder cap (9), generator (14), water pump (11), flywheel (2), piston (16) and connected connecting rod (27), it is characterized in that:

1.1, be provided with the firing chamber (17) that increases volume in the piston (16),

1.2, the cooling chamber (15) in the casing (6) is communicated with water pump (11), cylinder cap (9) is provided with suction tude (10) and outlet pipe (12),

1.3, with suction tude (10) be connected with mixer (22), the barrier film (19) that is provided with filter screen (23) in the mixer (22) and cooperates with spring (20), fuel gas inlet (25) penetrates in the mixing tube (30).

2, gas engine as claimed in claim 1 is characterized in that suction tude (10) and outlet pipe (12) communicate with cylinder (29) by cylinder cap (9).

3, gas engine as claimed in claim 1 is characterized in that said barrier film (19) and gland (18) are connected with top cover (21) on being fixed on filter screen (23).

4,, it is characterized in that said mixer (22) base plate is provided with air hole (24) as claim 1 or 3 described gas engines.

5, gas engine as claimed in claim 1 is characterized in that also having valve block (26) in mixing tube (30).

6, gas engine as claimed in claim 1 is characterized in that the fuel gas inlet (25) and the upper end of mixing tube (30) are in same horizontal plane.

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