CN207454239U - Lower discharge fluid end is sucked on a kind of plunger pump - Google Patents

Abstract

It is related to sucking lower discharge fluid end on a kind of plunger pump of oil drilling and extracting equipment, it is the top that the suction main of plunger pump is mounted on to fluid end pump head body, it discharges high pressure pipe joint and is mounted on pump head body lower part, so as to when plunger pump is sucked and discharged, it is exactly top suction chamber sucking, lower part discharge chamber discharge, solid particle proppant into pump head body suction chamber and discharges chamber from top to bottom by suction pressure and dead weight in fracturing fluid, the flow direction and flow velocity for carrying the fracturing fluid sucking discharge of solid particle proppant are all from top to down, thus solid particle proppant is not easy to remain in suction main and pump head body intracavitary, solid particle proppant is avoided in suction main and pump head body intracavitary sand setting and sand plug, make plunger pump parts without damage.

Description

Lower discharge fluid end is sucked on a kind of plunger pump

Technical field：

The utility model, which relates to, belongs to oil drilling and extracting equipment field.

Background technology：

In recent years, with the exploitation of unconventional energy resource particularly shale gas, ultra deep or ultra-large horizontal well waterpower pressure Splitting operation increasingly increases, and the demand of the complete pressure break equipment of adaptable large size is more and more urgent therewith.Pressure break pump truck is waterpower The key equipment of complete Frac unit in fracturing work construction, plunger pump is the core component of pressure break pump truck, and pressure break pump truck passes through Plunger pump will become high pressure after the fracturing fluid supercharging that solid particle proppant is carried from the low pressure that low-pressure manifold sucks and carry solid The fracturing fluid of particles supports agent discharges into high pressure exhaust manifold and injects pit shaft and squeeze into stratum.Hydraulic fracturing job needs substantial amounts of Solid particle proppant can prop up the rock wall surface for pressing off crack after pressure break, be allowed to re-close, and make hydraulic fracture into Lead to the flow-guiding channel of pit shaft for a rule, reach transformation reservoir, increase the purpose of Oil ＆ Gas Productivity.These solid particles support Agent is generally powder pottery and coated sand, grain size（Mesh）Generally 30 ~ 100 mesh, density are generally 1.4 ~ 1.7g/cm³, these are solid Body particles supports agent needs fracturing fluid to carry injection pit shaft, and fracturing fluid is mixture to be mixed there are many drag reduction water of chemical assistant or glue Close liquid（Also it is slippery water）, solid particle proppant injects stratum gap supporting crack under the carrying of smooth aqueous medium.At present, The sucking that the suction manifold arrangement of pressure break pump truck is usually connected to hydraulic end of plunger pump from low pressure manifold by sebific duct is total Pipe, the suction main of hydraulic end of plunger pump are typically mounted on fluid end pump head body bottom, and discharge high pressure pipe joint mounted on pump head Body top, so when plunger pump is sucked and discharged, always pump head body lower part suction chamber sucks, top discharge chamber discharge, this suction Enter the manifold arrangement that the advantages of discharging mode is easy for vehicle, shortcoming is solid particle proppant easily in suction main and pump head Deposition in body cavity, particularly in big sand ratio（That is fracturing fluid silt carrying capacity is big）Operating mode under sand setting phenomenon than more prominent, made when serious Into sand plug, plunger, connecting rod and the crosshead even pump head body of plunger pump are damaged.

The content of the invention：

The purpose of this utility model is to provide a kind of new hydraulic end of plunger pump, it is a kind of by hydraulic end of plunger pump Suction main be mounted on fluid end pump head body top, high pressure exhaust manifold be mounted on pump head body lower part device.

To achieve the above object, the technical solution of the utility model is：

The utility model includes:Power end 4, fluid end 2, suction main 1, pump head body 7, high-pressure outlet 3, suction line It converging, discharge flange 11, high pressure exhaust manifold, plunger pump is made of power end 4 and fluid end 2, it is characterized in that：Suction main 1 pacifies Mounted in 7 top of pump head body of fluid end 2, suction main 1 is connected after being connected with suction manifold with low pressure manifold again, fluid end A discharge flange 11 is installed in 27 lower part high-pressure outlet of pump head body, 3 both sides respectively, and one of discharge flange 11 uses plug It blocks, another discharge flange 11 is connected with high pressure exhaust manifold.

The beneficial effects of the utility model are：

Plunger pump suction main is mounted at the top of fluid end, making plunger pump, medium sucks from top to bottom during the work time Discharge, solid particle proppant are not easy to deposit in suction main and pump chamber under the action of sucking discharge pressure and dead weight Existing sand plug damage plunger pump.

Description of the drawings：

Fig. 1 is plunger pump assembly front view；

Fig. 2 is plunger pump assembly top view；

Fig. 3 is hydraulic end of plunger pump sectional view；

Fig. 4 discharges flange scheme of installation for plunger pump pump head body high-pressure outlet.

Specific embodiment：

Specific embodiment of the present utility model is further illustrated below in conjunction with the accompanying drawings.

Referring to Fig. 1, Fig. 2 and Fig. 4, plunger pump is made of power end 4 and fluid end 2, and suction main 1 is mounted on fluid power Suction manifold 5, is then connected on suction main 1 by 7 top of pump head body at end 2 again；In 2 lower part high-pressure outlet 3 of fluid end Respectively one discharge flange 11 of installation, one of discharge flange 11 are blocked with plug for both sides, another discharge flange 11 and high pressure Exhaust manifold connects.

Referring to Fig. 3, suction main 1 is fixed on the top of the major part pump head body 7 of fluid end 2 with one group of screw. During plunger pump work, in induction stroke, inlet valve 6 is opened, while dump valve 9 is closed, and carries the pressure break of solid particle proppant Liquid flows into the suction chamber 8 of pump head body 7 from suction main 1；In discharge stroke, inlet valve 6 is closed dump valve 9 simultaneously and is opened, and enters Suction chamber 8 carrying solid particle proppant fracturing fluid flow into pump head body 7 discharge chamber 10, the discharge chamber 10 of pump head body 7 with High-pressure outlet 3 is connection, and the fracturing fluid for so carrying solid particle proppant just flows into discharge flange from high-pressure outlet 3 11 inject pit shaft by high pressure exhaust manifold.

Claims (1)

1. lower discharge fluid end is sucked on a kind of plunger pump, including power end（4）, fluid end（2）, suction main（1）, pump head body （7）, high-pressure outlet（3）, suction manifold, discharge flange（11）, high pressure exhaust manifold, plunger pump is by power end（4）And fluid power End（2）Composition, it is characterized in that：Suction main（1）Mounted on fluid end（2）Pump head body（7）Top, suction main（1）With suction It is connected again with low pressure manifold after entering manifold connection, fluid end（2）Pump head body（7）Lower part high-pressure outlet（3）Both sides point It An Zhuan not a discharge flange（11）, one of discharge flange（11）It is blocked with plug, another discharge flange（11）With height Press exhaust manifold connection.