CN206681923U - A kind of hydraulic double-acting fracturing pump sledge - Google Patents
A kind of hydraulic double-acting fracturing pump sledge Download PDFInfo
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- CN206681923U CN206681923U CN201720407318.0U CN201720407318U CN206681923U CN 206681923 U CN206681923 U CN 206681923U CN 201720407318 U CN201720407318 U CN 201720407318U CN 206681923 U CN206681923 U CN 206681923U
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- 239000012530 fluid Substances 0.000 claims abstract description 54
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
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- 238000001816 cooling Methods 0.000 claims description 13
- 230000001050 lubricating effect Effects 0.000 claims description 9
- 239000002828 fuel tank Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 43
- 238000010276 construction Methods 0.000 description 7
- 238000003825 pressing Methods 0.000 description 5
- 238000005086 pumping Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
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- 238000010923 batch production Methods 0.000 description 1
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- 239000000446 fuel Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of hydraulic double-acting fracturing pump sledge, including sledge frame, power motor, oil pump, hydraulic power end and fluid end, power motor and oil pump are arranged on sledge frame both ends, and hydraulic power end is arranged in the middle part of sledge frame, and fluid end is arranged on hydraulic power end both sides；Power motor is connected by transmission mechanism with oil pump, oil pump is connected by three position four-way directional control valve with hydraulic power end, and oil pump can drive hydraulic power end to do work, and hydraulic power end is connected with fluid end, the lower end connection low-pressure manifold of fluid end, the both sides of fluid end are respectively communicated with high pressure pipe joint.Hydraulic double-acting fracturing pump sledge of the present utility model has that small volume, flow are big, pressure is high, high-power, the advantages of can working continuously for a long time.
Description
Technical field
Fracturing unit technical field is the utility model is related to, more particularly to a kind of hydraulic double-acting fracturing pump sledge.
Background technology
Pressing crack construction operation has become transformation Low permeable oil and gas reservoirs and develops the technical way of untraditional reservoir,
It is one of effective measures for improving oil gas well recovery, is widely used in the augmented injection of oil, oil/gas well stimulation and water injection well.
The U.S. occupy leading position always in the design and manufacture view of fracturing unit truck, and properties of product are advanced, automaticity
Height, operating pressure is big, discharge capacity is big, kind is complete, and main force's type is 1490kw and 1864kw, and maximum working pressure (MWP) reaches 160MPa, most
Huge discharge is 2.7m3/min.Because the oil gas field of north America region is located at plains region mostly, in complete machine load-carrying quality, fracturing pump
All many-sides such as arrangement are not limited by road conditions, and more than 1864kw fracturing unit trucks mostly use pulling type structure.
For different geographical and different applying working conditions, it is widely used in the oil-gas field developments such as oil, coal bed gas and shale gas,
Three kinds of vehicular, pulling type and skid-mounted forms can be selected in work region covering land, desert and ocean, pressure break bassinet structure.But
China's shale gas storage ambient is complicated, and the geographical environment and road conditions of construction area require that fracturing unit truck has the migration of height
Property, security and adaptability, its appearance and size and weight are severely limited, it is necessary to improve pressure break effect with high-power fracturing unit truck
Rate, reduce pressure break cost.Traditional fracturing unit truck is typically by engine, gearbox, fracturing pump, lube system on chassis (sledge frame), platform
The part such as system, hydraulic system, control system and high-low pressure manifold forms.
Problems be present in China Nei Di regions construction operation in the fracturing unit truck of typical high power：
Fracturing unit truck uses the power scheme of " diesel engine-gearbox-fracturing pump ", do not only exist fuel consumption it is big,
The shortcomings of noise pollution is big, engine and torque-converters are supporting difficult, worker's operating condition is poor, operating cost is high, and it is high-power
The size and weight of diesel engine and gearbox are all very big, are unfavorable for the Miniaturization Design of vehicle-mounted scheme, it is difficult to effectively solve
The problem of China well site is remote and Active workings are limited.And the fracturing unit truck power output of conventional diesel engine driving is difficult to exceed
2237kw, it is unfavorable for the high-power exploitation of vehicle-mounted scheme.The raising required in particular with low-carbon environment-friendly, high-power diesel engine
Effect will be limited, and Diesel Driven scheme turns into the bottleneck for restricting fracturing unit truck development.
With the large-scale development of the unconventionaloil pool wells such as the horizontal raising of Fracturing Technology and shale gas, pressing crack construction
Requirement more and more higher of the operation to the single-machine capacity of fracturing unit truck, pressure, discharge capacity, reliability and automatization level, single-machine capacity
Below 1490kw fracturing unit truck does not adapt to " batch production " job requirements of " all places liquid, thousand side's sand ".And fracturing device is
Implement the nucleus equipment of pressing crack construction operation, should develop towards the direction of small size, high-power, super-pressure and huge discharge.
Utility model content
The purpose of this utility model is to provide a kind of hydraulic double-acting fracturing pump sledge, exists to solve above-mentioned prior art
The problem of, to meet that small size, flow are big, pressure is high, high-power, long-time pressing crack construction job requirements.
To achieve the above object, the utility model provides following scheme：
The utility model provides a kind of hydraulic double-acting fracturing pump sledge, including sledge frame, power motor, oil pump, hydraulic pressure
Power end and fluid end, the power motor and the oil pump are arranged on the sledge frame both ends, and the hydraulic power end is arranged on
In the middle part of the sledge frame, the fluid end is arranged on hydraulic power end both sides；The power motor passes through transmission mechanism and institute
Oil pump connection is stated, the oil pump is connected by three position four-way directional control valve with the hydraulic power end, and the oil pump can drive institute
The acting of hydraulic power end is stated, the hydraulic power end is connected with the fluid end, the lower end connection low pressure of the fluid end
Manifold, the both sides of the fluid end are respectively communicated with high pressure pipe joint.
Further, the oil pump passes through the P mouths of three position four-way directional control valve described in pipeline connection, the 3-position 4-way commutation
The T mouths of valve have been sequentially communicated filter, oil cooling machine and fuel tank by pipeline.
Further, the hydraulic power end includes two groups of execution units, and every group of execution unit includes two double-rods and lived
Beam hanger is filled in, the cavity of two described through-rod piston beam hanger one end is connected by pipeline respectively by pipeline connection, the cavity of the other end
The A mouths and B mouths of a logical three position four-way directional control valve, the piston rod of each through-rod piston beam hanger with a fluid end
Plunger by clamp connection, it is in parallel that the inlet valve of the fluid end passes through the low-pressure manifold, the dump valve of the fluid end
It is in parallel by the high pressure pipe joint.
Further, in addition to charging loop, the charging loop by pipeline and two through-rod piston beam hangers it
Between pipeline connection, the pipeline between the charging loop and the through-rod piston beam hanger is provided with electronics ball valve.
Further, the P mouths of each three position four-way directional control valve are parallel with two oil pumps, and each oil pump is equal
It is connected by a transmission mechanism with a power motor.
Further, the pipeline between the oil pump and the P mouths of the three position four-way directional control valve is provided with check valve and ratio
Example overflow valve.
Further, the pipeline between the oil pump and the P mouths of the three position four-way directional control valve is provided with thermometer, pressure
Meter and pressure transmitter.
Further, the oil pump is axial piston proportional variable pump, and the power motor is AC asynchronous motor.
Further, in addition to for cooling down the cooling system of the hydraulic power end and the fluid end.
Further, in addition to for lubricating the lubricating system of the hydraulic power end and the fluid end.
The operation principle of the utility model hydraulic double-acting fracturing pump sledge is：Power motor drives operation of oil pump, oil pump
Hydraulic oil is pumped into hydraulic power end by three position four-way directional control valve, under the control of three position four-way directional control valve, hydraulic power
End drives fluid end to move reciprocatingly, and replace change of the negative pressure with malleation is formed in the working chamber of fluid end, completes convection body and is situated between
The pumping work of matter.
The utility model achieves following technique effect relative to prior art：
Hydraulic double-acting fracturing pump sledge disclosed in the utility model is using power motor driving oil pump, relative to traditional
Diesel engine and gearbox dynamic system, volume substantially reduce, and reduce the volume of hydraulic double-acting fracturing pump sledge, make
Road transport is all greatly improved by property and flexibility.
Hydraulic power end of the present utility model is provided with two groups of execution units, and every group of execution unit includes two through-rod pistons again
Beam hanger, eight hydraulic cylinders of four through-rod piston beam hanger driving fluid ends perform the pumping work of fluid medium, greatly improved
The discharge capacity of the utility model hydraulic double-acting fracturing pump sledge.
Each three position four-way directional control valve of the present utility model is parallel with two oil pumps, and totally four oil pumps work simultaneously, often
Individual oil pump drives by a power motor, substantially increases the power of hydraulic double-acting fracturing pump sledge.
The utility model is additionally provided with cooling system and lubricating system, makes hydraulic power end and fluid end all the time in stabilization
Working condition, achievable long-time are worked continuously.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description are only of the present utility model
Some embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the utility model hydraulic double-acting fracturing pump sledge；
Fig. 2 is the schematic diagram of the utility model hydraulic double-acting fracturing pump sledge；
Wherein, 1- sledges frame, 2- oil pumps, 3- power motors, 4- low-pressure manifolds, 5- high pressure pipe joints, 6- fluid ends, 7- hydraulic pressure move
Power end, 8- fuel tanks, 9- oil cooling machines, 10- cooling systems, 11- lubricating systems, 12- electric-control systems, 13- check valves, 14- ratios are overflow
Flow valve, 15- thermometers, 16- pressure gauges, 17- pressure transmitters, 18- filters, 19- three position four-way directional control valves, 20- topping ups time
Road, 21- electronics ball valves, E- through-rod piston beam hanger E, F- through-rod piston beam hanger F, H- through-rod piston beam hanger H, K- through-rod piston beam hangers
K, I- hydraulic cylinder I, II- hydraulic cylinder II, III- hydraulic cylinder III, IV- hydraulic cylinder IV, V- hydraulic cylinder V, VI- hydraulic cylinder VI, VII-
Hydraulic cylinder VII, VIII- hydraulic cylinder VIII.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
The purpose of this utility model is to provide a kind of hydraulic double-acting fracturing pump sledge, exists to solve above-mentioned prior art
The problem of, to meet that small size, flow are big, pressure is high, high-power, long-time pressing crack construction job requirements.
To enable above-mentioned purpose of the present utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings and tool
Body embodiment is described in further detail to the utility model.
As shown in Figure 1-2：Present embodiments provide a kind of hydraulic double-acting fracturing pump sledge, including 1, four power of sledge frame
3, four oil pumps 2 of motor, hydraulic power end 7, fluid end 6, cooling system 10, lubricating system 11 and electric-control system 12.Power electric
Machine 3 is preferably AC asynchronous motor, the preferably axially plunger type proportional variable pump of oil pump 2.
Four power motors 3 and four oil pumps 2 are symmetrical set is arranged on sledge frame at the both ends of sledge frame 1, hydraulic power end 7
1 middle part, fluid end 6 are preferably two four cylinder fluid ends, are separately positioned on the both sides of hydraulic power end 7；Each power motor 3 is logical
Cross a transmission mechanism to be connected with an oil pump 2, pass through a three position four-way directional control valve 19 and hydraulic power respectively after oil pump 2 is in parallel two-by-two
The connection of end 7, two fluid ends 6 are connected with hydraulic power end 7 respectively, the lower end connection low-pressure manifold 4 of fluid end 6, liquid
The both sides at power end are respectively communicated with high pressure pipe joint 5.Power motor 3 drives oil pump 2 to do work, and oil pump 2 is by driving hydraulic power end 7 to do
Work(, fluid end 6 is then driven to complete the pumping work of fluid medium.
Pass through the P mouths of pipeline connection three position four-way directional control valve 19, the T of three position four-way directional control valve 19 after two parallel connections of oil pump 2
Mouth is sequentially communicated filter 18, oil cooling machine 9 and fuel tank 8 by pipeline.Fuel tank 8 is connected with sledge frame 1, and oil cooling machine 9 connects with fuel tank 8
It is logical, the hydraulic oil in fuel tank 8 is cooled down by the way of forced oil-circulation.The P mouths of oil pump 2 and three position four-way directional control valve 19
Between pipeline on be additionally provided with check valve 13, proportional pressure control valve 14, thermometer 15, pressure gauge 16 and pressure transmitter 17.
Hydraulic power end 7 includes two groups of execution units, and every group of execution unit includes two through-rod piston beam hangers, and two double
For the cavity of bar piston beam hanger one end by pipeline connection, the pipeline is also communicated with charging loop 20, and charging loop 20 is used for double
Bar piston beam hanger repairing, electronics ball valve 21 is additionally provided with the pipeline between charging loop 20 and through-rod piston beam hanger.
The cavity of two through-rod piston beam hanger other ends passes through the A mouths and B of pipeline connection three position four-way directional control valve 19 respectively
Mouthful, the plunger of the piston rod of each through-rod piston beam hanger with a fluid end 6 is led to by clamp connection, the inlet valve of fluid end 6
The parallel connection of low-pressure manifold 4 is crossed, the dump valve of fluid end 6 passes through the parallel connection of high pressure pipe joint 5.
Cooling system 10 is used to cool down hydraulic power end 7, fluid end 6.Lubricating system 11 is used to lubricate the He of hydraulic power end 7
Fluid end 6.Power motor 3, proportional pressure control valve 14, thermometer 15, pressure gauge 16, pressure transmitter 17, three position four-way directional control valve
19 and electronics ball valve 21 electrically connected with electric-control system 12.
Referring to Fig. 2, the operation principle of the present embodiment hydraulic double-acting fracturing pump sledge is：
Electric-control system 12 controls power motor 3 to work, and power motor 3 drives oil pump 2 to work, and oil pump 2 pumps out hydraulic oil, high
Force feed flow to three position four-way directional control valve 19 by check valve 13, and electric-control system 12 controls the valve element of three position four-way directional control valve 19 to be in
Left side.Now, the through-rod piston beam hanger E and through-rod piston beam hanger H at hydraulic power end 7 are filling high pressure, through-rod piston beam hanger E and double
Bar piston beam hanger H piston rod moves upwards, and through-rod piston beam hanger F and through-rod piston beam hanger K piston rod move downward, liquid
Fluid media (medium) in power cylinder II, hydraulic cylinder IV, hydraulic cylinder VI and hydraulic cylinder VIII is compressed, and through row in the form of high-pressure fluid
Go out valve to discharge along high pressure pipe joint 5, while hydraulic cylinder work, hydraulic cylinder III, hydraulic cylinder V and hydraulic cylinder VII cavity volume are in negative pressure,
Fluid media (medium) is inhaled into through inlet valve along low-pressure manifold 4.When the piston at hydraulic power end 7 is lived near limit on the left position, i.e. double-rod
Beam hanger E and through-rod piston beam hanger H piston rod is filled near limes superiors and through-rod piston beam hanger F and through-rod piston beam hanger K piston
For bar when lower limit position, electric-control system 12 controls the valve element commutation of three position four-way directional control valve 19, valve element is in right side.This
When, the through-rod piston beam hanger F and through-rod piston beam hanger K at hydraulic power end 7 are filling high pressure, through-rod piston beam hanger F and through-rod piston
Beam hanger K piston rod moves upwards, and through-rod piston beam hanger E and through-rod piston beam hanger H piston rod move downward, hydraulic cylinder
Fluid media (medium) in work, hydraulic cylinder III, hydraulic cylinder V and hydraulic cylinder VII is compressed, and through dump valve in the form of high-pressure fluid
Discharged along high pressure pipe joint 5, while hydraulic cylinder II, hydraulic cylinder IV, hydraulic cylinder VI and hydraulic cylinder VIII cavity volume are in negative pressure, fluid
Medium is inhaled into through inlet valve along low-pressure manifold 4.Such iterative motion, fluid end 6 is completed pressurization and be situated between with trandfer fluid
The function of matter.
Hydraulic double-acting fracturing pump sledge disclosed in the present embodiment drives oil pump 2 using power motor 3, relative to traditional
Diesel engine and gearbox dynamic system, volume substantially reduce, and reduce the volume of hydraulic double-acting fracturing pump sledge, make
Road transport is all greatly improved by property and flexibility.Solve asking for massive hydraulic fracturing car " difficult, upper road of registering the license being difficult, difficulty of going up a hill "
Topic.
The hydraulic power end 7 of the present embodiment is provided with two groups of execution units, and every group of execution unit includes two through-rod pistons again
Beam hanger, four through-rod piston beam hangers drive eight hydraulic cylinders of fluid end 6 to perform the pumping work of fluid medium, carried significantly altogether
The high discharge capacity of the present embodiment hydraulic double-acting fracturing pump sledge.The present embodiment hydraulic double-acting fracturing pump sledge maximum pump discharge can
Up to 7.15m3/ min, maximum working pressure is up to 140MPa.
Each three position four-way directional control valve 19 of the present embodiment is parallel with two oil pumps 2, and totally four oil pumps 2 work simultaneously,
Each oil pump 2 drives by a power motor 3, substantially increases the single-machine capacity of hydraulic double-acting fracturing pump sledge.This implementation
The power output of example separate unit hydraulic double-acting fracturing pump sledge can reach 4500kw.
The present embodiment is additionally provided with cooling system 10 and lubricating system 11, makes hydraulic power end 7 and fluid end 6 all the time in steady
Fixed working condition, achievable long-time are worked continuously.
Apply specific case in this specification to be set forth principle of the present utility model and embodiment, the above is real
The explanation for applying example is only intended to help and understands method and its core concept of the present utility model；Meanwhile for the general of this area
Technical staff, according to thought of the present utility model, there will be changes in specific embodiments and applications.To sum up institute
State, this specification content should not be construed as to limitation of the present utility model.
Claims (10)
- A kind of 1. hydraulic double-acting fracturing pump sledge, it is characterised in that：Including sledge frame, power motor, oil pump, hydraulic power end and Fluid end, the power motor and the oil pump are arranged on the sledge frame both ends, and the hydraulic power end is arranged on the sledge frame Middle part, the fluid end are arranged on hydraulic power end both sides；The power motor is connected by transmission mechanism and the oil pump Connect, the oil pump is connected by three position four-way directional control valve with the hydraulic power end, and the oil pump can drive the hydraulic pressure to move Power end is done work, and the hydraulic power end is connected with the fluid end, the lower end connection low-pressure manifold of fluid end, fluid end Both sides are respectively communicated with high pressure pipe joint.
- 2. hydraulic double-acting fracturing pump sledge according to claim 1, it is characterised in that：The oil pump passes through pipeline connection The P mouths of the three position four-way directional control valve, the T mouths of the three position four-way directional control valve have been sequentially communicated filter, oil cooling by pipeline Machine and fuel tank.
- 3. hydraulic double-acting fracturing pump sledge according to claim 2, it is characterised in that：The hydraulic power end includes two Group execution unit, every group of execution unit include two through-rod piston beam hangers, the cavity of two described through-rod piston beam hanger one end By pipeline connection, the cavity of the other end is respectively by the A mouths and B mouths of three position four-way directional control valve described in pipeline connection one, each The piston rod of the through-rod piston beam hanger passes through clamp connection, the inlet valve of the fluid end with the plunger of a fluid end In parallel by the low-pressure manifold, the dump valve of the fluid end is in parallel by the high pressure pipe joint.
- 4. hydraulic double-acting fracturing pump sledge according to claim 3, it is characterised in that：Also include charging loop, it is described Charging loop is lived by the pipeline connection between pipeline and two through-rod piston beam hangers, the charging loop with the double-rod Pipeline between plug beam hanger is provided with electronics ball valve.
- 5. hydraulic double-acting fracturing pump sledge according to claim 3, it is characterised in that：Each 3-position 4-way commutation The P mouths of valve are parallel with two oil pumps, and each oil pump is connected by a transmission mechanism with a power motor.
- 6. hydraulic double-acting fracturing pump sledge according to claim 2, it is characterised in that：The oil pump with described three four Pipeline between the P mouths of logical reversal valve is provided with check valve and proportional pressure control valve.
- 7. hydraulic double-acting fracturing pump sledge according to claim 2, it is characterised in that：The oil pump with described three four Pipeline between the P mouths of logical reversal valve is provided with thermometer, pressure gauge and pressure transmitter.
- 8. hydraulic double-acting fracturing pump sledge according to claim 1, it is characterised in that：The oil pump is axial plunger Formula proportional variable pump, the power motor are AC asynchronous motor.
- 9. hydraulic double-acting fracturing pump sledge according to claim 1, it is characterised in that：Also include being used to cool down the liquid Pressure power end and the cooling system of the fluid end.
- 10. hydraulic double-acting fracturing pump sledge according to claim 1, it is characterised in that：Also include described for lubricating Hydraulic power end and the lubricating system of the fluid end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720407318.0U CN206681923U (en) | 2017-04-18 | 2017-04-18 | A kind of hydraulic double-acting fracturing pump sledge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720407318.0U CN206681923U (en) | 2017-04-18 | 2017-04-18 | A kind of hydraulic double-acting fracturing pump sledge |
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| Publication Number | Publication Date |
|---|---|
| CN206681923U true CN206681923U (en) | 2017-11-28 |
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| CN201720407318.0U Active CN206681923U (en) | 2017-04-18 | 2017-04-18 | A kind of hydraulic double-acting fracturing pump sledge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870316A (en) * | 2017-04-18 | 2017-06-20 | 黄山市汇润机械有限公司 | A kind of hydraulic double-acting compression pump sledge |
-
2017
- 2017-04-18 CN CN201720407318.0U patent/CN206681923U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870316A (en) * | 2017-04-18 | 2017-06-20 | 黄山市汇润机械有限公司 | A kind of hydraulic double-acting compression pump sledge |
| CN106870316B (en) * | 2017-04-18 | 2019-06-11 | 黄山市汇润机械有限公司 | A kind of hydraulic double-acting fracturing pump sledge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Two effect fracturing pump sledges of fluid pressure type Effective date of registration: 20190226 Granted publication date: 20171128 Pledgee: Huizhou Commercial Bank Co.,Ltd. Xiuning Branch Pledgor: Huangshan Huirun Machinery Co.,Ltd. Registration number: 2019340000115 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20171128 Pledgee: Huizhou Commercial Bank Co.,Ltd. Xiuning Branch Pledgor: Huangshan Huirun Machinery Co.,Ltd. Registration number: 2019340000115 |