CN220267680U - Fracturing pump truck matched with coiled tubing for operation - Google Patents

Abstract

The utility model relates to a fracturing pump truck for matching with coiled tubing operation, which comprises the following components: chassis car is provided with auxiliary girder platform, power assembly, transmission shaft, high pressure plunger pump, lubricating system, control box and engine preheating device on the chassis car, and engine preheating device includes: the device comprises a diesel heating furnace, a diesel tank, a fuel pipeline and a circulating liquid pipeline; the lubrication system is two-way lubrication, the lubricating grease pipeline is connected with the lubrication oil pipeline in parallel, and a hydraulic end input pipeline and a lubrication medium are selected through a reversing valve; the bottom of the control box is provided with a steel wire rope buffer. The utility model is matched with a fracturing pump truck for continuous oil pipe operation to prevent the loosening of components of control box instruments and meters; the equipment is ensured to be started quickly in a low-temperature environment, and the working efficiency is improved; one path of the hydraulic end of the high-pressure plunger pump is provided with two lubrication modes, and the lubricating grease pipeline is connected with the lubricating oil pipeline in parallel, so that a reliable oil film is formed when the plunger pump moves, and the equipment is ensured to be in a good working state.

Description

Fracturing pump truck matched with coiled tubing for operation

Technical Field

The utility model relates to the field of oil and gas drilling equipment, in particular to a fracturing pump truck for operation matched with a continuous oil pipe.

Background

During oil or gas production, water is often used to fracture hydrocarbon reservoirs, in a manner known as fracturing. The fracturing is to intervene the stratum structure by human, so that the stratum is cracked, the flowing condition of oil gas in the underground is improved, and the oil well yield is improved. In the fracturing process, a fracturing truck is mainly adopted, and is a special vehicle for carrying out various fracturing operations in oil, gas and water wells, and is used for injecting large-displacement fracturing fluid into the wells, fracturing the ground and extruding propping agents into the cracks. At present, a fracturing pump truck adopted by an oil field mostly adopts a diesel generator to drive a fracturing pump for operation. When the diesel generator is used as power, the fracturing pump is driven by the gearbox and the universal shaft so as to fracture an oil layer.

The fracturing pump truck is used as a necessary device for continuous oil pipe operation, has a severe working environment and is difficult to start in an extremely cold environment; due to lubrication defects in a high-temperature environment, long-time stable and normal operation cannot be ensured; in the field running of the fracturing pump truck, the road surface is bumpy, so that components of instruments and meters in the control box are loosened and damaged.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides the fracturing pump truck for the operation of the continuous oil pipe, which is used for rapidly starting in a low-temperature environment and realizing good lubrication in a high-temperature environment, preventing the loosening of components of instruments and meters of a control box and ensuring that equipment is in a good state.

The technical scheme adopted by the utility model is as follows:

a fracturing pump truck for matching with coiled tubing operation,

comprising the following steps: chassis car is provided with auxiliary girder platform, power assembly, transmission shaft, high pressure plunger pump, lubricating system, control box and engine preheating device on the chassis car, and engine preheating device includes: the device comprises a diesel heating furnace, a diesel tank, a fuel pipeline and a circulating liquid pipeline;

the liquid inlet and outlet of the diesel heating furnace are connected with the circulating cooling liquid inlet and outlet of the engine;

the heating furnace is arranged in the heating furnace box and is provided with an air inlet channel and a smoke exhaust pipeline; the head part of the smoke exhaust pipe is provided with a double-layer spark catcher;

the lower half part of the heating furnace box is square, the upper half part of the heating furnace box is of a trapezoid structure, and the upper top surface and the lower top surface of the heating furnace box are of an open structure; the front and rear inclined surfaces of the heating furnace box are provided with upturning movable doors; the bottom outward turning angle steel is used as a fixed edge and is connected with the auxiliary beam platform of the frame through bolts;

the lubrication system is used for lubricating a power end and a hydraulic end of the high-pressure plunger pump, and comprises the following components: the device comprises a hydraulic pump, a hydraulic pipeline, a hydraulic oil tank assembly, a lubricating oil tank assembly and an electric lubricating grease pump;

the first hydraulic pump is used for providing hydraulic power for the liquid supply centrifugal pump, and the second hydraulic pump is used for providing liquid supply pressure for the lubricating oil path;

the lubrication system is two-way lubrication, one lubrication is that a second hydraulic pump pumps lubricating oil to a power end and a hydraulic end, the power end is lubricated by adopting a spray type oil bath, and each lubrication point is provided with an oil injection port; a patch thermocouple temperature measuring unit is arranged at the position of the power end bearing seat close to the bearing;

the other path of lubrication is driven by an electric grease pump to lubricate the hydraulic end of the plunger;

the lubricating grease pipeline is connected with the lubricating oil pipeline in parallel, and a hydraulic end input pipeline and a lubricating medium are selected through a reversing valve;

the hydraulic oil tank assembly is used for containing hydraulic oil of a hydraulic system, and is arranged above the rectangular bracket, and the rectangular bracket straddles the transmission shaft and is positioned between the gearbox and the plunger pump;

the lubricating oil tank assembly is used for storing gear oil for cooling and lubricating the power end of the plunger pump and comprises an oil tank, a connecting lug plate and an oil filling port, and is of a rectangular structure;

the lubricating oil tank is arranged in a sinking groove reserved in the main through beam of the frame and is fixed with the frame through two side connecting lug plates, and the lubricating oil tank is lower than an oil return port of the power end of the plunger pump.

Preferably, the lubrication system comprises a lubrication oil tank, and one end of the second hydraulic pump is connected with the lubrication oil tank through an oil suction filter; the other end of the second hydraulic pump is connected with one end of the secondary filter; the other end of the secondary filter is respectively connected with a branch safety valve and a temperature control valve; the branch safety valve is connected with the lubricating oil tank; the temperature control valve is provided with two output ports: an output port B and an output port C; the output port of the B is connected with a high-pressure plunger pump; the output port of the C is connected with a high-pressure plunger pump through a radiating water tank;

the high-pressure plunger pump is provided with a hydraulic end lubricating oil injection port and a power end lubricating oil injection port;

the output port of the B and the output port of the radiating water tank are connected with a lubricating oil injection port of the power end;

the output port of the B and the output port of the radiating water tank are connected with the first input end of the reversing valve;

the second input end of the reversing valve is connected with the electric grease injection pump;

the output end of the reversing valve is connected with the lubricating oil injection port of the hydraulic end;

the bottom of the high-pressure plunger pump is provided with an oil collecting box for recovering lubricating oil at the hydraulic end.

Preferably, the control box is arranged at the middle front end of the driving side of the fracturing truck;

the bottom of the control box is provided with a steel wire rope buffer;

a steel wire rope damper is respectively arranged at four corners of the bottom of the control box and is respectively fixed on the control box and the auxiliary beam platform through bolts, and the steel wire rope damper is longitudinally arranged.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model is matched with a fracturing pump truck for continuous oil pipe operation, and the bottom of the control box is provided with a steel wire rope shock absorber to prevent loosening of components of instruments and meters of the control box; the engine preheating device ensures the quick start of equipment in a low-temperature environment, and improves the working efficiency; one path of the hydraulic end of the high-pressure plunger pump is provided with two lubrication modes, the first is that the lubrication gear oil which is branched out directly passes through the lubrication injection ports which are arranged on each plunger of the hydraulic end when the reversing valve does not act, and the lubrication oil with pressure is forced to squeeze into the packing box and lubricate the surfaces of the plungers through the internal oil channels; the second is that the reversing valve is electrified and displaced, a lubrication pipeline of the electric grease injection pump is changed into a passage, the electric grease injection pump sets lubrication time and lubrication interval, and grease is injected into the hydraulic end of the plunger at fixed time and fixed quantity; the grease lubrication is used when the ambient temperature is high and the pressure is high, so that the formed oil film is more stable, and the ablation of the surface of the plunger caused by the reduction of the viscosity of the lubricating oil is avoided; the lubricating grease pipeline is connected with the lubricating oil pipeline in parallel, and a reversing valve is used for selecting which lubricating medium the hydraulic end input pipeline passes through, so that no matter what environment temperature of the plunger can be mutually supplemented, a reliable oil film is formed when the equipment moves, and the equipment is ensured to be in a good working state.

Drawings

FIG. 1 is a front view of an embodiment of the present utility model;

FIG. 2 is a rear view of an embodiment of the present utility model;

FIG. 3 is a top view and a schematic view of a region division according to an embodiment of the present utility model;

FIG. 4 is an isometric view of a secondary beam platform according to an embodiment of the present utility model;

FIG. 5 is an isometric view of a powertrain according to an embodiment of the present utility model;

FIG. 6 is an isometric view of a hydraulic tank assembly and drive shaft shield according to an embodiment of the present utility model;

FIG. 7 is a schematic illustration of the oil return line of a high pressure plunger pump in accordance with an embodiment of the present utility model;

FIG. 8 is a schematic diagram of a lubrication system according to an embodiment of the present utility model;

FIG. 9 is an isometric view of a base of a high pressure plunger pump in accordance with an embodiment of the present utility model;

FIG. 10 is a schematic illustration of a high and low pressure line shaft measurement according to an embodiment of the present utility model;

FIG. 11 is a partial schematic view of a low pressure line water inlet in an embodiment of the present utility model;

FIG. 12 is a partial schematic view of a centrifugal pump installation in accordance with an embodiment of the utility model;

FIG. 13 is a cross-sectional view of a cone-type connector according to an embodiment of the present utility model;

FIG. 14 is a schematic perspective view of a preheating device according to an embodiment of the present utility model;

FIG. 15 is a schematic view showing the internal structure of a preheating device according to an embodiment of the present utility model;

FIG. 16 is a schematic illustration of a high pressure plunger pump shaft according to an embodiment of the present utility model;

FIG. 17 is a schematic view of a tank elevation in accordance with an embodiment of the present utility model;

FIG. 18 is a schematic view of a tank elevation in accordance with an embodiment of the present utility model;

FIG. 19 is a front view of a liquid dispensing tank in accordance with an embodiment of the present utility model;

FIG. 20 is a cross-sectional view A-A of FIG. 19;

FIG. 21 is a top view of a liquid dispensing tank in accordance with an embodiment of the present utility model;

FIG. 22 is a schematic diagram of an embodiment of the present utility model illustrating an axis of a dispensing platform and a tank platform;

FIG. 23 is a left side view of a pump head pedal of an embodiment of the present utility model;

FIG. 24 is a front view of a pump head pedal of an embodiment of the present utility model;

FIG. 25 is a partial isometric view of a high pressure straight tube assembly in accordance with an embodiment of the utility model;

fig. 26 is an isometric view of a movable elbow assembly according to an embodiment of the present utility model.

The main component symbols in the drawings illustrate:

in the figure:

1. chassis truck; 2. an auxiliary beam platform; 3. a power assembly; 4. a drive shaft assembly; 5. a high pressure plunger pump; 6. a high pressure manifold; 7. a low pressure manifold; 8. a preheating device; 9. a lubrication system 10, a tank elevation; 11. a liquid preparation water tank; 12. a liquid preparation platform; 13. a pump head pedal; 14. a vehicle-mounted manifold; 15. a control box; 201. a main through beam; 202. the top is a frame platform; 203. a secondary beam fixing member group; 301. a heat radiation water tank; 302. an engine; 303. a gearbox 304, a shoulder pole beam; 305. a brake disc; 306. a suspension brake caliper; 401. a drive shaft 402, a drive shaft shield; 403. maintaining the door; 404. a limiting pin; 501. a base 502, a height-adjustable thick plate; 503. a discharge flange; 601. a safety valve; 602. a plug valve; 603. a manual throttle valve; 604. a liquid discharge pipeline; 605. a high pressure straight tube; 701. a No. 1 manual butterfly valve 702 and a water inlet; 703. welding a ball valve; 704. a centrifugal pump; 705. 2, a manual butterfly valve 706 and a four-way joint; 707. pneumatic butterfly valve; 708. 3, a manual butterfly valve; 709. pneumatic butterfly valve No. 2; 710. a tapered connector; 711. a hydraulic motor; 712. 4, a manual butterfly valve; 713. a No. 2 water inlet; 714. a bracket; 715. post protection; 716. an end cap; 801. a diesel heating furnace 802, a furnace box; 803. a diesel tank; 804. a circulating liquid pipeline; 805. a fuel oil pipeline; 901. a second hydraulic pump; 902. an oil absorption filter; 903. secondary fine filtering; 904. a temperature control valve; 905. a safety valve; 906. a lubrication oil tank assembly; 907. a temperature measuring unit; 908. an electric grease pump; 909. a reversing valve; 910. a hydraulic oil tank assembly; 911. a rectangular bracket; 912. a corner plate; 1001. a case; 1002. a flip-up door; 1003. a gas spring 1004 and a handrail guard; 1101. a U-shaped bending plate; 1102. an included angle bending plate; 1103. a reducing joint; 1104. an orifice plate; 1105. a sign board; 1201. an escalator; 1202. a spring pin; 1203. punching a hole plate by using crocodile mouths; 1204. an auxiliary armrest; 1301. ear plates; 1302. a cushion block; 1303. guard bars; 1401. a high pressure straight tube assembly; 1402. a movable elbow assembly; 40103. a high pressure straight tube; 1140201, bottom half; 140202, movable elbow; 140203, upper half; 14204. a hasp.

Detailed Description

The utility model is described in detail below with reference to the attached drawings and examples:

the utility model provides a cooperation coiled tubing operation is with fracturing pump truck, includes chassis car 1, auxiliary girder platform 2, power assembly 3, transmission shaft assembly 4, high-pressure plunger pump 5, high-pressure manifold 6, low-pressure manifold 7, preheating device 8, lubricating system 9, water tank high platform 10, join in marriage liquid water tank 11, join in marriage liquid platform 12, pump head footboard 13, on-vehicle manifold 14 and control box 15.

The whole gravity center of the fracturing truck is centered, and an auxiliary beam platform 2 is arranged above the main beam of the chassis truck 1 and is used as an upper loading platform. Wherein the central axes of the power assembly 3, the transmission shaft assembly 4 and the power end input port of the high-pressure plunger pump 5 are arranged on the same axis. The power end of the high-pressure plunger pump 5 is arranged on the driving side of the vehicle, the hydraulic end and the high-pressure discharge manifold face the secondary driving side, the high-pressure area is concentrated in the right rear area of the vehicle, the non-overhauling time is ensured, and the pump head pedal 13 lifts up the fixed protection pump head area, so that the anti-puncture leakage and anti-splashing effects are realized. The high-pressure manifold 6 is additionally provided with an explosion-proof rope at the corner and the suspended position, so that the manifold is prevented from being broken and flying out, and the safety is improved.

The low-pressure manifold 7 is arranged at the bottom of the high-pressure plunger pump 5, two sides respectively provide two liquid supply branches, one branch is positioned above the vehicle platform, and the other branch extends backwards to the bottom of the auxiliary beam platform 2 and is reliably fixed. A lubrication system 9 is arranged between the powertrain 3 and the high-pressure plunger pump 5. The vehicle-mounted manifold 14 is provided with a manifold bracket below the middle platform position and the tail platform of the vehicle driving side respectively, and is used for fixing a high-pressure connecting pipe.

Two fuel tanks are additionally arranged on two sides of the vehicle beam, and a small fuel tank is arranged on the main driving side and is used as a special driving fuel tank of the chassis vehicle 1; the large oil tank at the secondary driving side is simultaneously an upper diesel engine and a chassis 1 engine, and the oil way is switched through a plurality of electromagnetic valves. The auxiliary beam platform 2 adopts a double-layer beam structure, the bottom is a main through beam 201, the top is a frame platform 202, and the auxiliary beam platform is fixed with the main beam of the chassis vehicle 1 through an auxiliary beam fixing piece set 203.

The main through beam 201 adopts a rectangular pipe welded double-longitudinal beam rectangular structure. The middle part of the main through beam 201 is cut, a square pipe notch is welded with a blocking plate, a cut sinking groove space is used for placing a lubricating oil tank 906, and threaded pore plates are welded on the top of the square pipe front and back. The width of the outer sides of the two longitudinal beams of the main through beam 201 is equal to the width of the main beam of the frame, so that the upper part and the lower part of the auxiliary beam fixing piece set 203 can be reliably attached.

The frame of the main body of the frame platform 202 is a surrounding rectangle, the cross beam below the engine is disconnected, and the longitudinal beam of the main through beam 201 is welded downwards to eliminate the height difference. The frame platform 202 and the length are slightly smaller than the main through beam 201, and the tail end of the main through beam naturally forms a step shape along the direction of the vehicle head.

The auxiliary beam fixing piece set 203 is divided into an upper part and a lower part, and a plurality of round plug welding holes are formed on the joint surface of the upper fixing piece and the main through beam 201 and are welded and fixed with the main through beam 201; the joint surface of the lower fixing piece and the main beam of the chassis vehicle 1 is provided with spaced bolt through holes which are fixed with the main beam by bolts.

The power assembly 3 comprises a radiating water tank 301, an engine 302, a gearbox 303, a shoulder pole beam 304 and a battery box. The radiator 301 is located at the forefront of the vehicle platform 202, and integrates engine high and low temperature heat dissipation, diesel heat dissipation, hydraulic oil heat dissipation, large pump lubrication heat dissipation and transmission oil heat dissipation.

The engine 302 is coupled to the transmission via a transfer flange to the flywheel housing. The output flange shaft is provided with a brake disc 305 and a suspension brake caliper 306, the brake caliper 306 is driven by transmission oil pressure of the gearbox to brake, when an engine fails or the discharge pressure is over-pressure, a control system automatically detects a failure signal to control the gearbox to return to neutral, and the brake caliper 306 clamps the brake disc 305 to brake.

The drive shaft assembly 4 is comprised of a drive shaft 401 and a drive shaft shroud 402. The flanges at the two ends of the transmission shaft 401 are matched with the output flange of the gearbox 303 and the input flange of the high-pressure plunger pump 5. The drive shaft shield 402 is constructed as an n-type tunnel structure with reversible service doors 403 on both side channel members. The maintenance door 403 is made by bending a strip-shaped pore plate, 3 groups of round holes with the same space and size are formed in the vertical faces of the short sides and the channel steel bracket, two adjacent groups are arranged at the top, and 1 group is arranged at the bottom. The first group of round holes on the top and the groove steel frame are penetrated with a fixed shaft as a rotary supporting shaft, so that the maintenance door 403 can be turned up and down; after the maintenance door 403 is turned up to a parallel angle, the maintenance door 403 can be limited and cannot drop by penetrating the second group of round holes above by using the pressing marble limiting pins 404 with anti-lost chains at two sides; after the maintenance door 403 is closed, the limiting pin penetrates into the bottom 1 group of round holes to limit, so that the opening is prevented.

The high-pressure plunger pump 5 adopts a horizontal five-cylinder plunger pump, the high-pressure plunger pump 5 is divided into a power end and a hydraulic end, and the power end comprises an input shaft, a gear reduction box, a crankshaft, a connecting rod and the like and a frame; the hydraulic end mainly comprises a hydraulic cylinder, a packing assembly, a plunger, a water supply manifold and an exhaust flange. The base 501 adopts a 4-leg structure and is welded by H-shaped steel and square tubes; the top platform is welded to the heightened plank 502. The high-pressure plunger pump has a discharge flange 503 on the left and right for mounting the high-pressure manifold 6, and two inlet ports are provided.

The high-pressure manifold 6 is composed of high-pressure pipe fittings and functional instruments and meters. The hydraulic pressure type vehicle is mainly divided into two paths, one path faces the direction of a vehicle head, a discharge flange port is connected with a 90-degree right-angle joint and a safety valve 601 in series through a union, a through hole union joint is arranged at a discharge port on the side of the safety valve, a liquid discharge pipeline faces the lower side of a vehicle through a welding elbow, and the pipeline is sleeved with a pressure-resistant hose through a clamp to serve as a pressure-relief liquid discharge pipeline 604 so as to discharge liquid to a designated area. The other path faces the tail side, the discharge flange is transversely connected with a plurality of T-shaped tee joints in series through a conversion union, and one side of a branch port of each tee joint is provided with a vibration-resistant pressure gauge and a pressure sensor. The first-stage tee joint is vertically arranged, a transverse passage is converted into an upper passage and a lower passage, a plug valve 602 is arranged on the upper passage, a manual throttle valve 603 is arranged on the upper passage, channel liquid is finally led into the liquid preparation water tank 11 through a welding union and a welding pipeline, the manual throttle valve 603 is only used for flushing, stirring and circulating liquid preparation, the micro-motion adjusting pressure ensures that the liquid flows out to flush the inside of the liquid preparation water tank 11, and a circulating passage can be formed by the micro-motion adjusting pressure and a low-pressure manifold 7 connected below the water tank, so that the liquid preparation is fully circulated; the plug valve 603, the right angle joint and the high-pressure straight pipe 605 are connected in series downwards in sequence, the high-pressure straight pipe 605 passes through a trapezoid hole at the bottom of the water tank high platform 10, and the high-pressure straight pipe 605 extends out of the frame platform 202 from the union joint to the right rear side and does not exceed the rearmost end of the main through beam 201.

The low-pressure manifold 7 provides three different liquid supply modes, the cut-off and control valve adopts a manual butterfly valve and a pneumatic butterfly valve, the middle part is lined with fluorine for corrosion prevention, and the whole pipeline is suitable for corrosive fluids such as acidification and the like. The first liquid supply mode is direct press-in liquid supply, a liquid supply pipeline in the direction of a pump truck head adopts a long-radius 90-degree elbow to enable the pipeline direction to face the outside of a vehicle, then two continuous 45-degree joints are welded to reduce the height of a manifold, a female union joint is reserved after a No. 1 manual butterfly valve 701 is connected in series, and a water inlet 702 can drain the high-pressure plunger pump 5. The reserved water inlet 702 is used for being directly connected with a water tank, and liquid is pressed into a plunger cavity of the high-pressure plunger pump 5 by utilizing the liquid level height difference of the water tank in situ. The two liquid supply methods are hydraulic centrifugal pumps, wherein the centrifugal pump 704 is arranged at the bottom of the frame platform 202, the centrifugal pump is used for pressurizing process fluid by utilizing centrifugal force after connecting with a transfusion pipeline, the process fluid enters the high-pressure plunger pump 5 through a low-pressure manifold 7 at the side of the vehicle tail, the low-pressure manifold is sequentially connected with a reducing joint, a rubber hose, a No. 2 manual butterfly valve 705 and a low-pressure straight pipe in series from a water outlet on the centrifugal pump 704, the low-pressure straight pipe extends upwards to a four-way joint 706 above the frame platform 202, and the four-way joint 706 is slightly higher than the high-pressure straight pipe. The four-way joint 706 forms a 45-degree angle with the vehicle advancing direction, the lateral pipe which faces left, front, right and back diagonals and the lateral pipe which faces right and back turns the direction to face right and back through the 45-degree joint and the reducing joint, and the pipe diameter is thinned to be externally connected with the welded ball valve 703. The four-way joint 706 is connected with a pneumatic butterfly valve 707 in series to the upper opening and then welded with a reserved pipeline at the bottom of the liquid preparation water tank 11. The welding straight pipe at the left front joint of the four-way joint continues to extend to the left front, a 45-degree elbow is welded at a proper position to enable the direction of a pipeline to be parallel to the direction of the high-pressure straight pipe, when the pipeline reaches the front of the liquid distribution water tank 11, the pipeline is divided into two paths through a T-shaped tee joint, one path of the pipeline continues to pass through a plurality of sections of straight pipes and a plurality of 45-degree joints forwards to form an inverted trapezoid, a high-pressure manifold is avoided, then a manual butterfly valve 708 is connected in series, and finally the pipeline reaches a reserved joint of the high-pressure plunger pump 5, and the pipeline is fixed through a clamp; the other end is parallel to the high-pressure manifold branch upwards by the T-shaped three-way branch, and the pipe orifice is opened towards the water tank by serially connecting the pneumatic butterfly valve 709 and the 180-degree elbow after exceeding the top of the liquid distribution water tank and is used as a liquid feeding port of the water tank. In this manner, the low pressure manifold arrangement, after closing the pneumatic butterfly valve 707 of the dosing tank 11 and the pneumatic butterfly valve 709 of the upper port of the dosing tank 11, supplies the process fluid directly into the plunger cavity through the centrifugal pump 704 as a second mode of supply. The third liquid supply mode needs to close the manual butterfly valve 708 in the direction of the high-pressure plunger pump 5, open the pneumatic butterfly valve 709 at the liquid outlet of the liquid preparation water tank 11, inject liquid into the liquid preparation water tank 11, add medicines according to the operation process requirements, then close the pneumatic butterfly valve 709 at the liquid outlet, open the pneumatic butterfly valve 707 and the manual butterfly valve 708 in sequence, inject liquid in the liquid preparation water tank 11 into the high-pressure plunger pump 5, realize the third liquid supply mode of the water tank, and the high-pressure plunger pump 5 can open the plug valve 602 through the water tank branch of the high-pressure manifold 6, close the plug valve 603, the travel path recharge the liquid into the liquid preparation water tank 11, so that the process liquid is fully mixed and stirred, finally close the plug valve 602, open the liquid discharge plug valve 603 and inject the mixed liquid into an external pipeline.

The centrifugal pump 704 driving unit adopts a hydraulic motor 712 to provide power, the rear end is provided with the hydraulic motor 711 through a conical connector 710, the conical connector 710 is a conical cylinder, the inside of the conical connector is a cavity, the diameter of the front section is smaller, and the front end face is provided with uniformly distributed mounting holes which are the same as the positions of the end cover holes of the centrifugal pump 704. The rear section has larger diameter, the rear end face is provided with a stepped spigot, an end cover 716 is arranged at the spigot, and the end cover is in screw connection with the vertebral body connector 710. The end cover 716 is provided with a square sinking groove, a matching surface is arranged for the hydraulic motor 711, a round spigot is arranged at the center position, the central shaft position of the hydraulic motor 711 is limited, and the two ends are ensured to be coaxial. And a coupling transmission is arranged between the centrifugal pump input shaft and the hydraulic motor output spline. The front section conical surface of the conical connector 710 is provided with a square hole, so that the observation and maintenance are convenient, a conical surface cover plate is covered above the square hole, and the square hole is closed.

The centrifugal pump 704 is transversely arranged on a bracket 714 and is parallel to the rear protection, the bracket is positioned at the bottom of the main beam of the chassis truck 1, the two sides of the bracket are provided with hanging channel steel cantilever structures which are fixed with prefabricated screw holes at the two sides of the main beam, the tail part of the bracket is connected with the rear protection, and six connecting points are formed in total to form a stable supporting structure, so that centrifugal force vibration generated during the operation of the centrifugal pump is overcome. The connection of the bracket 714 and the rear guard 715 is inclined upwards, so that the departure angle is increased to avoid collision. The front support of the secondary driving side of the bracket 714 adopts a two-section structure, a welding fixed plate of a triangular plate at the top is connected with the main beam, the lower half part adopts a channel steel vertically downward, the channel steel is in a channel steel groove for accommodating the centrifugal pump 704, the channel steel groove at the bottom of the bracket is upward, and the centrifugal pump 704 and the conical connector 710 are arranged on the inner plane to support the supporting feet. The thinner part of the input end of the centrifugal pump penetrates through the bottom of the main beam, and the bigger part extends out of the main beam, so that the device is prevented from being too low in ground clearance. The oil inlet and outlet of the hydraulic motor are arranged between the main beams.

The pneumatic butterfly valve 707 is composed of a pneumatic actuator, a return transmitter, and an indicator, wherein the return transmitter transmits an action signal to the control box, and the indicator assists in prompting the operator of the on-state.

The preheating device 8 is mainly used for auxiliary heating before the cold start of the fracturing truck, reduces the loss of an engine, reduces the viscosity of oil liquid of a hydraulic and lubricating system, and ensures that enough lubrication is provided during the start by a diesel heating furnace 801, a furnace box 802, a diesel tank, a circulating liquid pipeline, a fuel pipeline and the like.

The diesel oil heating furnace 801 adopts diesel oil direct combustion to provide heat, the heat is transferred to cylinder liner water of a circulating liquid pipeline through a heat exchanger, the circulating cylinder liner water gradually transfers the heat to parts such as an engine, a hydraulic oil tank, a lubricating oil tank and the like, when the temperature is gradually increased to 20-30 ℃, idling operation equipment of the engine can be normally started, and the idling operation equipment replaces the heating furnace to serve as a heat source for heating the system.

The oven box 802 is used for protecting the diesel heating oven 801, the outer layer is an outer box body, the lower half part of the outer box body is square, the upper half part of the outer box body is of a trapezoid structure, and the upper top surface and the lower top surface of the outer box body are open. The three trapezoid frames on the upper top surface are welded with angle steel supports, the front inclined surface and the rear inclined surface are provided with upward-turning movable doors 803, and the upward-turning movable doors 803 can be supported and fixed. The bottom valgus angle is fixed with the frame platform 202 by bolts as a fixed edge. The n-type bending plate 804 is placed in the furnace box, the bottom is fixed on the frame platform 202, the outer box body of the furnace box and the n-type bending plate in the furnace box can be separated and detached respectively and independently, and the diesel heating furnace 801 can be disassembled and inspected after the outer box body is detached. The two vertical surfaces of the two sides of the outer box body are provided with uniformly-spaced louvers for ventilating and supplying oxygen to the heating furnace 801, and the two upturning movable doors 803 can be opened to further increase the air flow. The top surface of the n-type bending plate 804 is provided with a strip hole which can accommodate the smoke exhaust pipe of the heating furnace 801 to pass through, the smoke exhaust pipe is connected to the side wall of the outer box body and fixed, and the head part of the smoke exhaust pipe is provided with a double-layer spark catcher 805 for explosion-proof treatment.

The lubrication system 9 performs lubrication operation for the movable part of the high-pressure plunger pump 5. The lubrication system includes a second hydraulic pump 901, hydraulic lines, a hydraulic tank assembly 910, a lubrication tank assembly 906, and an electric grease pump 908. The hydraulic pump is arranged at the gearbox and is provided with two PTO ports, the first hydraulic pump provides hydraulic power for the liquid supply centrifugal pump, and the second hydraulic pump provides liquid supply pressure for the lubricating oil path.

The hydraulic tank assembly 910 is adapted to hold hydraulic system hydraulic oil and is mounted above a rectangular bracket 911 which straddles the drive shaft 401 and is located between the gearbox 303 and the high pressure plunger pump 5. A channel steel is welded on one side of the rectangular bracket 911 and is used as a mounting bearing surface of the grease electric pump 908 and is flush with the mounting surface of the oil tank. The rectangular bracket 911 is centrally installed in the fuel tank, and pedal installation gussets 912 are reserved on both sides in the vehicle width direction.

The lubricating oil tank assembly 906 is mainly used for storing gear oil for cooling and lubricating a power end of the plunger pump, and consists of a lubricating oil tank, a connecting lug plate, an oil filling port and the like, and is of a rectangular structure and low in height. The lubricating oil tank is installed in the sinking groove reserved in the main through beam 201 of the frame, is fixed with the frame bolt through the connecting lug plates on two sides, is lower than the oil return port of the power end 5 of the high-pressure plunger pump, and the oil discharge pipeline is flat and straight without bending, does not store oil and is convenient for lubricating oil to flow.

The lubrication points of the high-pressure plunger pump 5 are mainly concentrated at two ends, a power end where a gear box and a crankshaft are positioned, and a hydraulic end where a plunger reciprocates. The lubrication power adopts a gearbox PTO to take force to drive a second hydraulic pump to provide lubrication power, the second hydraulic pump 901 pumps the lubrication gear oil filtered by the oil suction filter 902 into a lubrication pipeline, the lubrication gear oil is sent to the temperature control valve 904 after passing through the secondary fine filter 903, a branch safety valve 905 loop is arranged between the secondary fine filter 903 and the temperature control valve 904, the overflow pressure is set to be 1MPa, and the lubrication gear oil is automatically decompressed and returned to the lubrication oil tank 906 when the overpressure occurs. The temperature control valve 904 sets the opening temperature, when the temperature of the lubricating oil is lower than the set temperature, the lubricating oil directly flows to the high-pressure plunger pump from the port B; when the set temperature is exceeded, the temperature control valve 904 is switched to the position where the oil preferentially flows into the radiator tank 301 through the port C. The two paths flowing out of the temperature control valve 904 are finally converged behind the water outlet of the radiating water tank 301, a temperature sensor, a pressure sensor and a mechanical meter are arranged on the converged pipeline, oil temperature and oil pressure information is collected, and the running state of the lubrication system is judged. After passing through the instrument, the lubricating oil is divided into two paths for lubricating the high-pressure plunger pump 5. And one path of the lubricating oil power end is provided with a lubricating oil inlet of the power end, and lubricating oil is continuously sprayed at all the positions of the bearing and the bearing bush through a built-in distribution pipeline of the power end to lubricate and dissipate heat. A patch type thermocouple temperature measuring unit 907 is arranged at the position, close to the bearing, of the power end bearing seat, the temperatures of the power end bearing and the bearing bush of the plunger pump are monitored in real time, and the spray type lubrication condition is monitored. The injected lubricating oil gradually gathers in the oil pan and returns to the lubricating oil tank 906 along the bottom oil return port 913.

One path of the lubricating oil hydraulic end has two lubricating modes, and the first is that the branched lubricating gear oil directly passes through the lubricating injection ports arranged on each plunger of the hydraulic end when the reversing valve 909 does not act, and the pressurized lubricating oil is forced to squeeze into the packing box and lubricate the surfaces of the plungers through the internal oil duct. The second is that the change valve 909 is energized and displaced, the lubrication line of the electric grease injection pump 908 is changed to a passage, the electric grease injection pump 908 sets the lubrication time and the lubrication interval, and the grease is injected to the plunger fluid end at regular time and quantity. The lubricating grease pipeline is connected with the lubricating oil pipeline in parallel, and a hydraulic end input pipeline and a lubricating medium are selected through a reversing valve.

The water tank high platform 10 is arranged at the rearmost end of the frame platform of the fracturing truck, is integrally formed into an opening Lv Xing in a top view, is flush in the tail direction and protrudes in the head direction. The bottom of the right side view deflection side is provided with an unequal trapezoid notch for accommodating a high-pressure manifold 6 and a low-pressure manifold 7 paved in the area, and the single-bevel inverted trapezoid support leg bears the weight; the non-opening side of the box body is provided with a hinged upturning door 1002, after being opened, the inside of the box body 1001 can be used as a storage space for storing larger and longer working tools, and a rubber plate is paved on the ground inside the box body 1001 to buffer. The top of the water tank high table 10 is provided with a Lv Zixing opening, and a small opening at the top is used as a channel between the low-pressure manifold 7 and the liquid distribution water tank 11; the big mouth side opening is as subtracting heavy design, and the open cover forms sealed box 1001 after top liquid water tank 11 installs, and the lock of flip-up door 1002 below can lock theftproof. Two air springs 1003 are arranged below the turning-up door 1002 and the rotating shaft of the box body 1001, and the air springs 1003 can support the turning-up door 1002 in an inclined mode, so that articles can be conveniently taken out.

The top surface of the water tank high platform 10 is a smooth surface except for the bearing beam surface, and the other exposed convex platforms are paved with pattern plates for skid resistance. The outside of the protruding position is provided with a handrail guardrail 1004 which is fixed from the bottom of the side surface of the water tank high platform 10 to the top of the side surface of the liquid preparation water tank 11, and the middle is provided with a cross beam.

The tank deck 10 is positioned at the rearmost end of the vehicle and is bolted to the frame platform 202.

The liquid preparation water tank 11 is arranged above the water tank high table 10, two ends of the bottom of the water tank are provided with U-shaped bending plates, and the positions of the U-shaped bending plates are fixed through reserved bolts on two sides.

The liquid preparation water tank 11 is used for proportioning and holding process liquid and is a non-capping tank body. The box body is welded with the front sealing plate and the rear sealing plate after the U-shaped bend 1101 is folded by a whole stainless steel plate. The bottom of the U-shaped bending plate 1101 is not an integral plane, the bottom plane is smaller and leans to one side, and two ends of the U-shaped bending plate are bent upwards, so that liquid draining is facilitated. The two sides are bent and upwards inclined planes and the bottom surface form an included angle, an included angle bending plate 1102 which is attached to the inclined angle is plugged in, the opening is outwards, the middle is uniformly welded with a rib plate for reinforcement, and the rib plate is used as an inclined plane for supporting and preventing deformation and is simultaneously fixed with the lower water tank high table 10.

The liquid discharge holes are arranged on the plane position of the bottom of the liquid distribution water tank 11, the reducing joint 1103 is welded at the bottom, the detachable orifice plate 1104 is arranged on the top of the joint, the orifice plate 1104 is provided with uniform and dense water discharge holes, sundries in the filtered liquid are prevented from entering the pump to cause damage. The orifice plate 1104 is rotatably removable for replacement, with the orifice size and spacing being selectable.

A metering marking plate 1105 is arranged in the liquid preparation water tank 11, and the volume water level is set according to calculation on the marking plate 1105. The liquid distributing platform 12 is fixed on one side of the water tank high platform 10, is arranged between the high-pressure plunger pump 5 and the water tank high platform 10, and is flush with the top surface of the water tank high platform. An operator can stand on the platform to operate the pipeline for liquid preparation, and meanwhile, the high-pressure plunger pump 5 can be conveniently overhauled.

The liquid distribution platform 12 is used for assisting in climbing, is provided with a turnover escalator 1201, the escalator 1201 adopts a section bar to weld a rectangular frame, a certain angle is kept between the escalator 1201 and a vehicle body after the escalator falls down, a plurality of anti-slip pedals are arranged, the escalator 1201 is convenient to pedal, the ground is connected with the frame platform 202, the escalator 1201 is turned upwards to a vertical and slightly backward state during transportation, and a spring pin 1202 is arranged at the handrail and can be inserted into a reserved locking hole on the side surface of the section bar of the ladder. One side of the liquid distribution platform 12 staircase is provided with two steps to solve the height difference from the frame platform 202 to the top surface of the platform.

The crocodile mouth punching plate 1203 is laid on the upper plane and the steps of the liquid distribution platform 12 in an anti-skid way, and the platform is provided with an auxiliary handrail 1204 which is convenient to grasp during climbing.

The pump head pedal 13 is disposed on the hydraulic end side of the high-pressure plunger pump 5, covers the entire hydraulic end, and is located in the high-pressure region on the secondary side of the vehicle. The pump head pedal 13 is a turnover pedal, the bottom double-lug plate 1301 is provided with a rotary pin shaft and a limiting hole, the turnover rear pedal adjusting cushion block 1302 is contacted with the frame platform 202, the upper plane of the support pump head pedal 13 is flush with the upper plane of the frame platform 202, the maintenance space of the hydraulic end of the high-pressure plunger pump 5 is expanded, and falling is prevented. The guardrail 1303 is arranged at the outermost side, the width of the pump head pedal 13 is larger than the height of the hydraulic end of the high-pressure plunger pump 5, and the guardrail 1303 is suspended above after the guardrail is turned upwards, so that the guardrail with a higher size can be designed and cannot interfere with the high-pressure plunger pump 5.

The vehicle-mounted manifold 14 is used for externally connecting a high-pressure manifold when the fracturing truck works, two storage points are arranged on the driving side, and one high-pressure straight pipe assembly 1401 is arranged on the edge of the frame platform in the longitudinal direction; the movable elbow assembly 1402 is placed at the other position on one side of the tail main beam of the frame platform, and the hinge opening and closing device is used for placing the movable elbow, so that the position is lower and the taking is convenient.

The high-pressure straight pipe assembly 1401 is provided with two brackets 140101, a plurality of groups of limiting rings 140102, a high-pressure straight pipe 140103 and a bolt 140104. The support 140101 is mainly formed by splicing plates, two semicircular arc grooves are formed for accommodating the high-pressure straight pipes 140103, and the contact surface of the support 140101 and the high-pressure straight pipes 140103 is a circular arc-shaped guard plate. The number of the semicircular grooves of the support 140101 is equal to the number of the high-pressure straight pipes 140103, the semicircular grooves are obliquely arranged along the oblique sides, and the bottom edges are gradually inclined inwards towards the outer position. The support 140101 is provided with coaxial holes penetrating up and down, and a bolt 140104 is inserted to close the opening of the semicircular arc groove. The two groups of brackets 140101 are arranged on two sides of the high-pressure straight pipes 140101 in a straddling way, and a limiting ring is arranged on one side of each high-pressure straight pipe 140101 to axially limit the high-pressure straight pipes 140101; this arrangement is applicable to high pressure straight pipes 140101 of various length specifications.

The movable elbow assembly 1402 is mounted on the tail of the vehicle, below the frame platform 202, and is fixed to the chassis 1 main beam. The device is divided into an upper part and a lower part, a rotating shaft is arranged at the joint, the outer side of the rotating shaft can be opened and closed, the lower half part 140201 is in a groove shape of a U-shaped slidable movable elbow 140202, and polyoxymethylene plates are clamped at two sides of the groove shape as sliding rails. The upper half 140203 is provided with a plurality of semi-circular notches that capture the movable elbow 140202. The upper and lower portions are secured by a snap 14204 to prevent disengagement during shipping.

The bottom of the control box 15 is provided with a steel wire rope buffer for protecting an internal instrument from loss caused by engine vibration. The outer side is provided with an upturning protective door which is supported by a gas spring after being opened, thereby playing a role in shading sun and rain.

The utility model adopts a plurality of safety emergency modes, and the first operation control box is provided with an engine emergency stop button; 2. the sensor monitors pressure and displacement changes in real time, when the instantaneous overpressure of the pressure exceeds a set value, an alarm signal is automatically transmitted, and an audible and visual alarm device arranged on the sensor flashes red light and buzzes to alarm; automatically controlling the engine to slow down to idle speed and switching the gear of the gearbox back to the neutral gear; 3. the output shaft of the gearbox is provided with a caliper release type brake device, and when the gear of the gearbox is in neutral gear, a caliper clamps a brake disc for braking; 4. and the overpressure protection of the high-pressure manifold mechanical shear pin safety valve.

The above is merely a preferred embodiment of the present utility model, and is not intended to limit the structure of the present utility model in any way. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model fall within the technical scope of the present utility model.

Claims (3)

1. A fracturing pump truck for matching with coiled tubing operation,

comprising the following steps: chassis car is provided with auxiliary girder platform, power assembly, transmission shaft, high pressure plunger pump, lubricating system, control box and engine preheating device on the chassis car, its characterized in that:

the engine preheating device includes: the device comprises a diesel heating furnace, a diesel tank, a fuel pipeline and a circulating liquid pipeline;

the liquid inlet and outlet of the diesel heating furnace are connected with the circulating cooling liquid inlet and outlet of the engine;

the heating furnace is arranged in the heating furnace box and is provided with an air inlet channel and a smoke exhaust pipeline; the head part of the smoke exhaust pipe is provided with a double-layer spark catcher;

the lower half part of the heating furnace box is square, the upper half part of the heating furnace box is of a trapezoid structure, and the upper top surface and the lower top surface of the heating furnace box are of an open structure; the front and rear inclined surfaces of the heating furnace box are provided with upturning movable doors; the bottom outward turning angle steel is used as a fixed edge and is connected with the auxiliary beam platform through bolts;

the lubrication system is used for lubricating a power end and a hydraulic end of the high-pressure plunger pump, and comprises the following components: the device comprises a hydraulic pump, a hydraulic pipeline, a hydraulic oil tank assembly, a lubricating oil tank assembly and an electric lubricating grease pump;

the first hydraulic pump is used for providing hydraulic power for the liquid supply centrifugal pump, and the second hydraulic pump is used for providing liquid supply pressure for the lubricating oil path;

the lubrication system is two-way lubrication, one lubrication is that a second hydraulic pump pumps lubricating oil to a power end and a hydraulic end, the power end is lubricated by adopting a spray type oil bath, and each lubrication point is provided with an oil injection port; a patch thermocouple temperature measuring unit is arranged at the position of the power end bearing seat close to the bearing;

the other path of lubrication is driven by an electric grease pump to lubricate the hydraulic end of the plunger;

the lubricating grease pipeline is connected with the lubricating oil pipeline in parallel, and a hydraulic end input pipeline and a lubricating medium are selected through a reversing valve;

the hydraulic oil tank assembly is used for containing hydraulic oil of a hydraulic system, and is arranged above the rectangular bracket, and the rectangular bracket straddles the transmission shaft and is positioned between the gearbox and the plunger pump;

the lubricating oil tank assembly is used for storing gear oil for cooling and lubricating the power end of the plunger pump and comprises an oil tank, a connecting lug plate and an oil filling port, and is of a rectangular structure;

the lubricating oil tank is arranged in a sinking groove reserved in the main through beam of the frame and is fixed with the frame through two side connecting lug plates, and the lubricating oil tank is lower than an oil return port of the power end of the plunger pump.

2. The fracturing pump truck for operation in cooperation with a coiled tubing according to claim 1, wherein:

the lubrication system comprises a lubrication oil tank, and one end of the second hydraulic pump is connected with the lubrication oil tank through an oil suction filter; the other end of the second hydraulic pump is connected with one end of the secondary filter; the other end of the secondary filter is respectively connected with a branch safety valve and a temperature control valve; the branch safety valve is connected with the lubricating oil tank; the temperature control valve is provided with two output ports: an output port B and an output port C; the output port of the B is connected with a high-pressure plunger pump; the output port of the C is connected with a high-pressure plunger pump through a radiating water tank;

the high-pressure plunger pump is provided with a hydraulic end lubricating oil injection port and a power end lubricating oil injection port;

the output port of the B and the output port of the radiating water tank are connected with a lubricating oil injection port of the power end;

the output port of the B and the output port of the radiating water tank are connected with the first input end of the reversing valve;

the second input end of the reversing valve is connected with the electric grease injection pump;

the output end of the reversing valve is connected with the lubricating oil injection port of the hydraulic end;

the bottom of the high-pressure plunger pump is provided with an oil collecting box for recovering lubricating oil at the hydraulic end.

3. The fracturing pump truck for operation in cooperation with a coiled tubing according to claim 1, wherein:

the control box is arranged at the middle front end of the driving side of the fracturing truck;

the bottom of the control box is provided with a steel wire rope buffer;

a steel wire rope damper is respectively arranged at four corners of the bottom of the control box and is respectively fixed on the control box and the auxiliary beam platform through bolts, and the steel wire rope damper is longitudinally arranged.