CN204552723U - A kind of pressure break transmission and high pressure discharge system - Google Patents
A kind of pressure break transmission and high pressure discharge system Download PDFInfo
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- CN204552723U CN204552723U CN201520153520.6U CN201520153520U CN204552723U CN 204552723 U CN204552723 U CN 204552723U CN 201520153520 U CN201520153520 U CN 201520153520U CN 204552723 U CN204552723 U CN 204552723U
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Abstract
The utility model relates to a kind of pressure break transmission and high pressure discharges system, comprise chassis, it is characterized in that, described chassis is provided with a high-power engine, transfer case, multiple Variable plunger pump and double acting fracturing pump, the output of described high-power engine is connected with the input of described transfer case, described transfer case output comprises multiple power taking mouth, and each described power taking mouth is connected with a described Variable plunger pump respectively; Described Variable plunger pump drives described double acting fracturing pump by hydraulic system.Also comprise system radiating device, and a heat radiation plunger displacement pump driven for described system radiating device, described heat radiation plunger displacement pump is connected with a power taking mouth of described transfer case.The power taking mouth of described transfer case and Variable plunger pump are arranged ringwise.Its beneficial effect is: replace machine driving by hydraulic-driven, reduces operational vibration; Save arrangement space, improve operating efficiency and whole vehicle stability simultaneously.
Description
Technical field
The utility model relates to technical field of oil field equipment, particularly relates to a kind of pressure break transmission and high pressure discharge system.
Background technology
Fracturing technique is the important operation means of current gas industries, especially in shale gas exploitation both at home and abroad at present, very important effect is played, be mainly used in stimulation work, by the fracturing fluid of fracturing unit truck to infusion in stratum one fixed displacement and pressure, when the pressure pumped into exceedes stratum opening pressure, comparatively large fracture can be formed in oil-gas Layer, thus improve the percolation ability on stratum, improve the output of oil gas, so the fracturing pump of the powerful motor of fracturing unit General Requirements and huge discharge, high pressure.
Fracturing unit truck transmission system conventional at present mainly adopts machine driving, pass through motor, gearbox, power transmission shaft drives conventional fracturing pump, realize of the fracturing fluid pumpdown, this transmission scheme overall performance is more stable, but due to gearbox, the crucial drive disk assembly such as power transmission shaft size is larger, limit the flexibility of layout to a certain extent, what is more important fracturing pump is generally that crank rotation drivening rod realizes plunger displacement pump reciprocating, because current highly difficult well gets more and more, operation pressure and power more and more higher, when needs power output is larger, because the power end inertia of inside is large, speed is higher, the vibration that generation is larger when carrying out operations involving high pressure, thus affect stability and the reliability of car load operation.
Fracturing work displacement control current in addition mainly relies on gearbox-gear change and select different fracturing pump plunger specification, need when needing huge discharge operation to select high rotating speed or the larger plunger of specification, this proposes requirements at the higher level to the application life of fracturing pump and transmission system.
In addition, in current common scheme, the caloric requirement lubricating and cooling system that gearbox and large pump produce due to gears meshing, High Rotation Speed in running is assisted, need to select professional radiator to dispel the heat, and radiator and supporting lubricating and cooling system often take larger arrangement space, be also unfavorable for that complete vehicle weight reduces.
In sum, vibration when how to reduce car load high-power operation, expand the displacement range of fracturing unit truck, reduce the weight of car load, finally reach that to improve car load synthetic job performance be need the oilfield applications technical issues that need to address.
Utility model content
The utility model, for above-mentioned the deficiencies in the prior art, provides a kind of pressure break transmission and high pressure to discharge system.It has compact overall structure, and operational vibration is little, the advantage that delivery efficiency is high.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of pressure break transmission and high pressure discharge system, comprise chassis, it is characterized in that, described chassis is provided with a high-power engine, transfer case, multiple Variable plunger pump and double acting fracturing pump, the output of described high-power engine is connected with the input of described transfer case, described transfer case output comprises multiple power taking mouth, and each described power taking mouth is connected with a described Variable plunger pump respectively; Described Variable plunger pump drives described double acting fracturing pump by hydraulic system.
The beneficial effects of the utility model are: compared with conventional fracturing unit truck, adopt the novel frac system of this system to replace machine driving by hydraulic-driven, can expand drive disk assembly type selecting scope; Its application double-action plunger pump makes the discharge capacity of equipment be doubled in theory, saves arrangement space, and overall dimensions of a car when simultaneously the layout of double-acting pump effectively can reduce operation, improves operating efficiency and whole vehicle stability.
On the basis of technique scheme, the utility model can also do following improvement.
Further, also comprise system radiating device, and a heat radiation plunger displacement pump driven for described system radiating device, described heat radiation plunger displacement pump is connected with a power taking mouth of described transfer case.
The beneficial effect of above-mentioned further scheme is adopted to be, collect by the heat of system radiating device by the car load hydraulic system of this fracturing unit truck, lubricating system, water circuit system and concentrate cooling heat dissipation, save space than the difference radiator structure of prior art, improve radiating efficiency.
Further, the power taking mouth of described transfer case and Variable plunger pump are arranged ringwise.
Further, described Variable plunger pump is provided with 5.
Adopt the beneficial effect of above-mentioned further scheme to be that annular arrangement is attractive in appearance, conserve space not only, and be conducive to the pressure equalizing of each plunger displacement pump.
Further, described Variable plunger pump is connected by the piston rod of control valve group with described double acting fracturing pump; Described control valve group comprises reversal valve and overflow valve.
The beneficial effect adopting above-mentioned further scheme realizes double-direction control by reversal valve, is used for the overpressure protection etc. of hydraulic system by overflow valve, and the turnover oil pipeline connecting fracturing pump is connected to left side and the right side of fracturing pump piston rod respectively.
Further, described double acting fracturing pump comprises symmetrically arranged two fluid ends.
The beneficial effect of above-mentioned further scheme is adopted to be system works can be made more steady, reduce vibration.
Accompanying drawing explanation
Fig. 1 is that the utility model complete vehicle structure arranges schematic diagram;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the arrangement schematic diagram of the utility model Variable plunger pump on transfer case;
Fig. 4 is the principle schematic of the main fluid power system of the utility model;
In Fig. 1 to Fig. 4, the list of parts representated by each label is as follows:
1, system radiating device, 2, chassis, 3, high-power engine, 4, transfer case, 5, Variable plunger pump, 6, double acting fracturing pump, 7, heat radiation plunger displacement pump, 8, fuel tank, 9, overflow valve, 10, reversal valve, 11, oil absorption filter, 12, return filter.
Detailed description of the invention
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Fig. 1 to Fig. 3, a kind of pressure break transmission and high pressure discharge system, comprise chassis 2, described chassis 2 is provided with a high-power engine 3, transfer case 4, multiple Variable plunger pump 5 and double acting fracturing pump 6, the output of described high-power engine is connected with the input of described transfer case, the output of described transfer case comprises multiple power taking mouth, and each described power taking mouth respectively Variable plunger pump 5 described with is connected; Described Variable plunger pump drives described double acting fracturing pump 6 by hydraulic system.Here chassis can be the chassis of chassis of semi-trailer or other haulage vehicle.
Also comprise system radiating device 1, and a heat radiation plunger displacement pump 7 driven for described system radiating device, described heat radiation plunger displacement pump is connected with a power taking mouth of described transfer case.
During concrete enforcement, along chassis from front to back, system radiating device 1, high-power engine 3, transfer case 4, multiple Variable plunger pump 5 and double acting fracturing pump 6 are arranged successively as preferred version.
The power taking mouth of described transfer case and Variable plunger pump are arranged ringwise.
Preferably, described Variable plunger pump is provided with 5.
Described double acting fracturing pump comprises symmetrically arranged two fluid ends.
As shown in Figure 4, described Variable plunger pump 5 is connected by the piston rod of control valve group with described double acting fracturing pump; Described control valve group comprises reversal valve 10 and overflow valve 9.Hydraulic oil is pumped into Variable plunger pump 5 by oil absorption filter 11 by described Variable plunger pump from mailbox 8, then drives double acting fracturing pump 6 to work, is provided with overflow valve 9 at variable piston delivery side of pump.From the oil return of double acting fracturing pump then after system radiating device 1 dispels the heat, then flowed back in fuel tank 8 by return filter 12.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a pressure break transmission and high pressure discharge system, comprise chassis, it is characterized in that, described chassis is provided with a high-power engine, transfer case, multiple Variable plunger pump and double acting fracturing pump, the output of described high-power engine is connected with the input of described transfer case, described transfer case output comprises multiple power taking mouth, and each described power taking mouth is connected with a described Variable plunger pump respectively; Described Variable plunger pump drives described double acting fracturing pump by hydraulic system.
2. pressure break transmission according to claim 1 and high pressure discharge system, it is characterized in that, also comprise system radiating device, and a heat radiation plunger displacement pump driven for described system radiating device, and described heat radiation plunger displacement pump is connected with a power taking mouth of described transfer case.
3. pressure break transmission according to claim 2 and high pressure discharge system, and it is characterized in that, the power taking mouth of described transfer case and Variable plunger pump are arranged ringwise.
4. the pressure break transmission according to any one of claims 1 to 3 and high pressure discharge system, and it is characterized in that, described Variable plunger pump is provided with 5.
5. pressure break transmission according to claim 4 and high pressure discharge system, and it is characterized in that, described Variable plunger pump is connected by the piston rod of control valve group with described double acting fracturing pump; Described control valve group comprises reversal valve and overflow valve.
6. pressure break transmission according to claim 1 and high pressure discharge system, and it is characterized in that, described double acting fracturing pump comprises symmetrically arranged two fluid ends.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520153520.6U CN204552723U (en) | 2015-03-18 | 2015-03-18 | A kind of pressure break transmission and high pressure discharge system |
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| CN201520153520.6U CN204552723U (en) | 2015-03-18 | 2015-03-18 | A kind of pressure break transmission and high pressure discharge system |
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