CN110426195A - A kind of helicoid hydraulic motor hot environment simulator - Google Patents
A kind of helicoid hydraulic motor hot environment simulator Download PDFInfo
- Publication number
- CN110426195A CN110426195A CN201910806217.4A CN201910806217A CN110426195A CN 110426195 A CN110426195 A CN 110426195A CN 201910806217 A CN201910806217 A CN 201910806217A CN 110426195 A CN110426195 A CN 110426195A
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- hot environment
- hydraulic motor
- case
- helicoid hydraulic
- high temperature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Abstract
The application provides a kind of helicoid hydraulic motor hot environment simulator, including High Temperature Simulation device；High Temperature Simulation device includes hot environment case；Helicoid hydraulic motor is corresponded on hot environment case equipped with corresponding channel；One end of the channel is equipped with heating device；Hot wind is blown into hot environment case by air blower by heating device；The husky hole of corresponding note, sand discharge hole and pressure valve are additionally provided on hot environment case.According to technical solution provided by the embodiments of the present application, by air blower hot wind can be entered and left into hot environment case, helicoid hydraulic motor is set to be in hot environment, it can ensure that in hot environment case by pressure valve in pressure constant state, it prevents that air blower is caused not blow normally because air pressure is excessively high, by injecting sand in note sand Kong Kexiang hot environment case, make helicoid hydraulic motor thermally equivalent, it is ensured that test data is more accurate.
Description
Technical field
This application involves oil/gas drilling engineerings and no-dig technique Science Drilling technical field, high more particularly to a kind of helicoid hydraulic motor
Temperature environmental simulation device.
Background technique
Power drilling tool, which has become, to be most widely used in special oil/gas drilling, no-dig technique catalase and Science Drilling
Downhole tool.As modern petrol resources exploitation is strided forward to deep formation, well temperature causes power drilling tool stator rubber thermo-oxidative ageing
Problem is increasingly prominent, and main cause is that motor operates for a long time under high temperature environment, and heat cannot be discharged in time for drilling fluid, is detained
Heat cause rubber physical chemical property to change, occur " heartburn " phenomenon, cause rubber to fall off, chip off-falling, block drill bit
Hydrophthalmia makes motor run out of steam.Meanwhile the interior tissue of the size of rotor interference magnitude, viscous glutinous agent also can be with the liter of temperature
It is high and change, seriously affect the mechanical efficiency of down-hole equipment.Therefore, influence of the analysis well temperature to power drilling tool service performance is compeled
The eyebrows and eyelashes.
A kind of high temperature helicoid hydraulic motor testing stand of 105910810 A of application publication number CN, including load system, water route follow
Loop system, fixed installation system, central control system and drilling tool heating system, load system include brake, reduction gearbox and torsion
Square sensor, water passage circulation system include dividing water drive assembly, slush pump and circulating water line, and fixed installation system includes bottom
Seat, drilling tool lift mechanism and tail end clamping device, drilling tool heating system are made of several medium heating boxes, brake, reduction gearbox,
Torque sensor divides water drive assembly, several medium heating boxes, drilling tool lift mechanism and tail end clamping device successively sequentially fixed
It is connected on pedestal, helicoid hydraulic motor to be tested passes through medium heating box.Beneficial effects of the present invention are to heat to be with drilling tool
System, the heating system can actual condition of the real simulation drilling tool in well, thus than more actually measuring drilling tool at high temperature
Service performance.
The principle of heating of a kind of above-mentioned high temperature helicoid hydraulic motor testing stand, temperature field simulation system is resistance heating, is added
The hot time is long, power consumption is big, test data error is big；The temperature environment case of the hot test platform only heat by lower part simultaneously, causes
It is uneven to the heating of helicoid hydraulic motor, test data inaccuracy.
Summary of the invention
In view of drawbacks described above in the prior art or deficiency, it is intended to provide a kind of helicoid hydraulic motor hot environment simulator.
The application provides a kind of helicoid hydraulic motor hot environment simulator, including High Temperature Simulation device；High Temperature Simulation device
Including hot environment case；Helicoid hydraulic motor is corresponded on hot environment case equipped with corresponding channel；One end of the channel is equipped with heating device；Add
Hot wind is blown into hot environment case by air blower by thermal；Be additionally provided on hot environment case it is corresponding infuse husky hole, sand discharge hole and
Pressure valve.
Further, hot environment case includes upper box and lower box；Upper box is connect with hydraulic cylinder is squeezed, can be along vertical
It is moved in the direction of lower box；It squeezes hydraulic cylinder and is located at side of the upper box far from lower box.
Further, channel is located at the docking of upper box and lower box；Upper box and lower box corresponding channel are set respectively
There is corresponding semicircle orifice.
It further, further include pedestal；High Temperature Simulation device can be slidably mounted on pedestal, the side of glide direction and channel
To identical；One end of the channel is equipped with clamping device；Clamping device is fixedly mounted on pedestal；High Temperature Simulation device and clamping device it
Between be connected with positioning hydraulic cylinder.
Further, clamping device is additionally provided on pedestal；Clamping device can be slidably mounted on pedestal, glide direction and height
Warm simulator is identical；Clamping device is located at the one end of High Temperature Simulation device far from clamping device.
It further, further include mud device；Mud device is connect with helicoid hydraulic motor, dynamic for providing for helicoid hydraulic motor
Power；Helicoid hydraulic motor is additionally provided with load device far from mud device one end.
Further, load device is axial weight on bit simulator；Axial weight on bit simulator includes mounting base；Mounting base
On be slidably mounted sliding support；Sliding support is equipped with and pours case and for clamping the fixed mechanism for pouring case；Mounting base
On along the direction of motion of sliding support be additionally provided with corresponding propulsive mechanism；Propulsive mechanism is fixedly mounted in mounting base；Fixed machine
Structure and propulsive mechanism are equipped with the sensor for detecting pressure.
Further, fixed mechanism includes the fixed frame in gate；Pour the inside that case is located at fixed frame；The top of fixed frame
Portion and two sides are equipped with compression hydraulic cylinder；Hydraulic cylinder is compressed perpendicular to pouring the corresponding end face of case；Propulsive mechanism include perpendicular to
The support plate of the sliding support direction of motion；The corresponding case that pours is equipped with corresponding propelling hydraulic cylinder in support plate；Propulsive mechanism and cunning
Corresponding push-and-pull hydraulic cylinder is also connected between dynamic bracket.
Further, load device is load simulation transmission case；Load simulation transmission case includes planetary gear mechanism and system
Motivation structure；Planetary gear mechanism includes the input shaft connecting with planet stent and the solar shaft that connect with sun gear；Arrestment mechanism
Including the multiple split gears engaged with the master gear of sun axis connection and with master gear；Split gear is connected to by shaft for making
Dynamic hydraulic motor；Hydraulic motor is equipped with the sensor for detecting torque.
Further, planetary gear mechanism further includes bull gear；The two sides of bull gear respectively correspond planetary gear mechanism and set
There is corresponding shell；Shell is to be fixedly connected with bull gear, is equipped with corresponding through-hole at corresponding input shaft and solar shaft；Shell is remote
Arrestment mechanism is corresponded to equipped with corresponding installation set from input shaft one end；Installation set is equipped with corresponding end cap far from shell one end；End
It covers corresponding solar shaft and is equipped with corresponding outlet.
The application has the advantages and positive effects of: can enter and leave hot wind into hot environment case by air blower, make spiral shell
Bar drill tool is in hot environment, can ensure that in hot environment case by pressure valve in pressure constant state, prevents from leading because air pressure is excessively high
It causes air blower not blow normally, by injecting sand in note sand Kong Kexiang hot environment case, makes helicoid hydraulic motor thermally equivalent, really
It is more accurate to protect test data.
According to the technical solution that the application some embodiments provide, helicoid hydraulic motor can detect by axial weight on bit simulator
The performance parameters such as maximum axial pressure, torque that broken rock fails；The cement block poured is fixed in fixed mechanism, guarantees screw rod
Drilling tool will not shake in drilling process, and propulsive mechanism applies pressure along drilling direction to cement block and detects spiral shell by sensor
Bar drill has the performance parameters such as the maximum axial pressure of broken rock failure, torque.
The output torque and output revolving speed of screw motor can be measured by load simulation transmission case；By by input shaft with
The output end of screw motor is connected, and carries out speedup drop by planetary gear mechanism and turns round, then is output to master gear by solar shaft, main
After gear transfers torque to hydraulic motor by multiple split gears, there is hydraulic motor to realize braking, so that it may pass through sensor
Measure the output torque and output revolving speed of screw motor.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of helicoid hydraulic motor hot environment simulator provided by the embodiments of the present application；
Fig. 2 is that the structure of the High Temperature Simulation device of helicoid hydraulic motor hot environment simulator provided by the embodiments of the present application is shown
It is intended to；
Fig. 3 is that the structure of the bit pressure simulator of helicoid hydraulic motor hot environment simulator provided by the embodiments of the present application is shown
It is intended to；
Fig. 4 is the structure of the load simulation transmission case of helicoid hydraulic motor hot environment simulator provided by the embodiments of the present application
Schematic diagram.
Label character described in figure indicates are as follows: 100- High Temperature Simulation device；110- hot environment case；111- infuses husky hole；
112- sand discharge hole；113- upper box；114- lower box；115- pressure valve；120- heating device；130- air blower；140- is squeezed
Hydraulic cylinder；200- pedestal；300- clamping device；310- positioning hydraulic cylinder；400- clamping device；500- mud device；600- is bored
Press simulator；610- mounting base；620- sliding support；630- pours case；640- fixed frame；641- compresses hydraulic cylinder；650-
Support plate；651- propelling hydraulic cylinder；660- push-and-pull hydraulic cylinder；700- load simulation transmission case；710- planet stent；711- input
Axis；720- sun gear；721- solar shaft；730- master gear；740- split gear；741- shaft；750- hydraulic motor；760- shell
Body；770- end cap；780- bull gear.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution of the application, with reference to the accompanying drawing to the application into
Row detailed description, the description of this part be only it is exemplary and explanatory, should not have any limitation to the protection scope of the application
Effect.
Fig. 1 and Fig. 2 are please referred to, the present embodiment provides a kind of helicoid hydraulic motor hot environment simulators, including High Temperature Simulation
Device 100, High Temperature Simulation device 100 include hot environment case 110, and helicoid hydraulic motor is corresponded on hot environment case 110 and is equipped with accordingly
Channel, helicoid hydraulic motor pass through hot environment case 110 designated position is heated；The one end in channel is equipped with heating device 120；
Heating device 120 uses high-frequency electromagnetic heating technique, and corresponding helicoid hydraulic motor also is provided with corresponding channel；Heating device 120 is separate
110 one end of hot environment case is equipped with air blower 130, and air blower 130 can blow the air after high-frequency electromagnetic heating device heats
Enter in hot environment case 110；Hot environment case 110 is equipped with pressure valve 115, and air blower 130 continues into hot environment case 110
Injection hot-air causes air pressure in hot environment case 110 to increase, and pressure valve 115, which can ensure that, keeps steady inside hot environment case 110
Fixed air pressure；It is equipped at the top of hot environment case 110 and infuses husky hole 111, sand discharge hole 112 is equipped at bottom；Due to fine sand
In the presence of, it is ensured that hot-air is evenly spaced in inside hot environment case 110, until being heated to the temperature of setting, passes through controller
Thermostatic control is carried out to hot environment case 110, High Temperature Simulation test is carried out to helicoid hydraulic motor.
In a preferred embodiment, hot environment case 110 includes upper box 113 and lower box 114；Upper box 113 and squeeze
Pressure cylinder 140 connects, and can move along the direction perpendicular to lower box 114；Upper box 113 is equipped with far from 114 one end of lower box
Parallel mounting plate squeezes 140 right angle setting of hydraulic cylinder on a mounting board.
In a preferred embodiment, channel is located at the docking of upper box 113 and lower box 114, upper box 113 and nowel
114 corresponding channel of body is respectively equipped with corresponding semicircle orifice；After upper box 113 and lower box 114 dock, two halves circular hole docks to be formed
One circular hole.
It in a preferred embodiment, further include pedestal 200, High Temperature Simulation device 100 can be slidably mounted on pedestal 200,
Glide direction is identical as the direction in channel, and one end of the channel is equipped with clamping device 300, and clamping device 300 is fixedly mounted on pedestal 200
On, clamping device 300 includes gripping sleeve, and gripping sleeve is arranged concentrically with channel, and gripping sleeve is made of two semicircular sleeves, two semicircles
Set is connected with corresponding hydraulic cylinder respectively, and helicoid hydraulic motor is clamped or is unclamped by hydraulic cylinder control；Gripping sleeve is far from high
Warm 100 one end of simulator corresponds to helicoid hydraulic motor and is additionally provided with corresponding support frame；High Temperature Simulation device 100 and clamping device 300
Between be connected with positioning hydraulic cylinder 310；After clamping device 300 clamps helicoid hydraulic motor, pass through the adjustment of positioning hydraulic cylinder 310 and height
The distance between warm simulator 100 is located at helicoid hydraulic motor designated position at hot environment case 110, can effectively improve experiment
The accuracy of data.
In a preferred embodiment, clamping device 400 is additionally provided on pedestal 200, clamping device 400 can be slidably mounted at bottom
On seat 200, glide direction is identical as the glide direction of High Temperature Simulation device 100, and clamping device 400 is located at High Temperature Simulation device
100 can carry out slidable adjustment according to helicoid hydraulic motor length far from 300 one end of clamping device, clamping device 400, it is ensured that helicoid hydraulic motor
It keeps stablizing.
It in a preferred embodiment, further include power source mud device 500, mud device 500 is connect with helicoid hydraulic motor, position
In at 300 one end of clamping device；Helicoid hydraulic motor is far from being additionally provided with load device at 500 one end of mud device.
Please further refer to Fig. 3, in a preferred embodiment, load device is axial weight on bit simulator 600, axial to bore
Pressing simulator 600 includes mounting base 610, has been slidably mounted sliding support 620 in mounting base 610, has set on sliding support 620
Have and pours case 630 and for clamping the fixed mechanism for pouring case 630；Pouring case 630 includes frame and baffle；Baffle passes through bolt
It is connect with frame；The cement block that can pour different densities in case 630 as needed is poured, after the completion of pouring, removes corresponding screw rod
The baffle of drilling tool side is tested；The direction of motion in mounting base 610 along sliding support 620 is additionally provided with corresponding pusher
Structure, propulsive mechanism are fixedly mounted in mounting base 610, and fixed mechanism and propulsive mechanism are equipped with the sensing for detecting pressure
Device.
In a preferred embodiment, fixed mechanism includes the fixed frame 640 in gate, pours case 630 and is located at fixed frame 640
Inside, the top and two sides of fixed frame 640 be equipped with compress hydraulic cylinder 641, compress hydraulic cylinder 641 be mounted on fixed frame 640
On, piston rod passes through fixed frame 640 and compresses to case 630 is poured；Piston rod is corresponded on fixed frame 640 is equipped with corresponding circle
Hole；Hydraulic cylinder 641 is compressed perpendicular to pouring the corresponding end face of case 630；Propulsive mechanism includes perpendicular to 620 side of moving of sliding support
To support plate 650, the corresponding case 630 that pours is equipped with corresponding propelling hydraulic cylinder 651 in support plate 650；Propulsive mechanism and sliding
Corresponding push-and-pull hydraulic cylinder 660 is also connected between bracket 620.
Please further refer to Fig. 4, in a preferred embodiment, load device is load simulation transmission case 700, load simulation
Transmission case 700 includes planetary gear mechanism and arrestment mechanism；Planetary gear mechanism includes sun gear 720 and bull gear 780, the sun
Multiple corresponding planetary gears are equipped between wheel 720 and bull gear 780；Planetary gear is mounted on planet stent 710；Planet stent
Input shaft 711 is also equipped on 710；Solar shaft 721 is connected on sun gear 720；Arrestment mechanism includes connecting with solar shaft 721
Master gear 730 and multiple split gears 740 for being engaged with master gear 730；Split gear 740 is connected to by shaft 741 for making
Dynamic hydraulic motor 750, hydraulic motor 750 are equipped with the sensor for detecting torque.
In a preferred embodiment, the two sides of bull gear 780 respectively correspond planetary gear mechanism equipped with corresponding shell
760；More than 760 bull gear 780 of shell is fixedly connected, and is respectively equipped with corresponding through-hole at corresponding input shaft 711 and solar shaft 721,
Shell 760 corresponds to arrestment mechanism equipped with corresponding installation set far from 711 one end of input shaft；Installation set and corresponding solar shaft 721
Through-hole coaxial arrangement, installation set are equipped with corresponding end cap 770 far from 760 one end of shell；Shaft 741 is mounted on shell 760 and end
Between lid 770；Master gear 730 and split gear 740 are all located between shell 760 and end cap 770；Hydraulic motor 750 is mounted on end
Lid 770 is far from 760 side of shell；Solar shaft 721 is corresponded on end cap 770 also to be provided with exporting accordingly.
Specific examples are used herein to illustrate the principle and implementation manner of the present application, and above embodiments are said
It is bright to be merely used to help understand the present processes and its core concept.The above is only the preferred embodiment of the application,
It should be pointed out that due to the finiteness of literal expression, and objectively there is unlimited specific structure, for the common of the art
For technical staff, without departing from the principle of the present invention, can also make it is several improve, retouching or variation, can also be with
Above-mentioned technical characteristic is combined in the right way；These improve retouching, variation or combination, or not improved by invention
Conception and technical scheme directly apply to other occasions, are regarded as the protection scope of the application.
Claims (10)
1. a kind of helicoid hydraulic motor hot environment simulator, which is characterized in that including High Temperature Simulation device (100)；The high temperature
Simulator (100) includes hot environment case (110)；Helicoid hydraulic motor is corresponded on the hot environment case (110) to be equipped with accordingly
Channel；The one end of the channel is equipped with heating device (120)；Hot wind is blown by the heating device (120) by air blower (130)
The hot environment case (110)；The husky hole (111) of corresponding note, sand discharge hole (112) are additionally provided on the hot environment case (110)
With pressure valve (115).
2. helicoid hydraulic motor hot environment simulator according to claim 1, which is characterized in that the hot environment case
It (110) include upper box (113) and lower box (114)；The upper box (113) connect with hydraulic cylinder (140) are squeezed, can be along vertical
Directly moved in the direction of the lower box (114)；The extruding hydraulic cylinder (140) is located at the upper box (113) far from described
The side of lower box (114).
3. helicoid hydraulic motor hot environment simulator according to claim 2, which is characterized in that the channel is located at described
At the docking of upper box (113) and lower box (114)；The upper box (113) and the corresponding channel difference of lower box (114)
Equipped with corresponding semicircle orifice.
4. helicoid hydraulic motor hot environment simulator according to claim 1, which is characterized in that further include pedestal (200)；
The High Temperature Simulation device (100) can be slidably mounted on the pedestal (200), the direction phase of glide direction and the channel
Together；The one end of the channel is equipped with clamping device (300)；The clamping device (300) is fixedly mounted on the pedestal (200)；
Positioning hydraulic cylinder (310) is connected between the High Temperature Simulation device (100) and clamping device (300).
5. helicoid hydraulic motor hot environment simulator according to claim 4, which is characterized in that on the pedestal (200)
It is additionally provided with clamping device (400)；The clamping device (400) can be slidably mounted on the pedestal (200), glide direction and institute
It is identical to state High Temperature Simulation device (100)；The clamping device (400) is located at the High Temperature Simulation device (100) far from the folder
One end of tight device (300).
6. helicoid hydraulic motor hot environment simulator according to claim 1, which is characterized in that further include mud device
(500)；The mud device (500) connect with the helicoid hydraulic motor, for providing power for the helicoid hydraulic motor；The screw rod
Drilling tool is additionally provided with load device far from the mud device (500) one end.
7. helicoid hydraulic motor hot environment simulator according to claim 6, which is characterized in that the load device is axis
To bit pressure simulator (600)；The axial weight on bit simulator (600) includes mounting base (610)；The mounting base (610)
On be slidably mounted sliding support (620)；The sliding support (620), which is equipped with, to be poured case (630) and pours for clamping
The fixed mechanism of case (630)；The direction of motion on the mounting base (610) along the sliding support (620) is additionally provided with accordingly
Propulsive mechanism；The propulsive mechanism is fixedly mounted on the mounting base (610)；The fixed mechanism and propulsive mechanism are equipped with
For detecting the sensor of pressure.
8. helicoid hydraulic motor hot environment simulator according to claim 7, which is characterized in that the fixed mechanism includes
In the fixed frame (640) of gate；The inside for pouring case (630) and being located at the fixed frame (640)；The fixed frame (640)
Top and two sides be equipped with compress hydraulic cylinder (641)；The compression hydraulic cylinder (641) pours case (630) phase perpendicular to described
The end face answered；The propulsive mechanism includes the support plate (650) perpendicular to the sliding support (620) direction of motion；The branch
Case (630) are poured described in corresponding on fagging (650) equipped with corresponding propelling hydraulic cylinder (651)；The propulsive mechanism and sliding branch
Corresponding push-and-pull hydraulic cylinder (660) are also connected between frame (620).
9. helicoid hydraulic motor hot environment simulator according to claim 6, which is characterized in that the load device is negative
Carry simulation transmission case (700)；The load simulation transmission case (700) includes planetary gear mechanism and arrestment mechanism；The planet
Gear mechanism includes the input shaft (711) connecting with planet stent (710) and the solar shaft (721) connecting with sun gear (720)；
The arrestment mechanism includes the master gear (730) connecting with the solar shaft (721) and multiple points engaged with master gear (730)
Gear (740)；The split gear (740) is connected to the hydraulic motor (750) for braking by shaft (741)；It is described hydraulic
Motor (750) is equipped with the sensor for detecting torque.
10. helicoid hydraulic motor hot environment simulator according to claim 9, which is characterized in that the planetary gear machine
Structure further includes bull gear (780)；The two sides of the bull gear (780) respectively correspond the planetary gear mechanism equipped with corresponding shell
Body (760)；The shell (760) is to be fixedly connected with bull gear (780), the corresponding input shaft (711) and solar shaft (721)
Place is equipped with corresponding through-hole；The shell (760) corresponds to the arrestment mechanism far from the input shaft (711) one end and is equipped with accordingly
Installation set；The installation set is equipped with corresponding end cap (770) far from the shell (760) one end；The end cap (770) on pair
The solar shaft (721) are answered to be equipped with corresponding outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910806217.4A CN110426195A (en) | 2019-08-29 | 2019-08-29 | A kind of helicoid hydraulic motor hot environment simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910806217.4A CN110426195A (en) | 2019-08-29 | 2019-08-29 | A kind of helicoid hydraulic motor hot environment simulator |
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| Publication Number | Publication Date |
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| CN110426195A true CN110426195A (en) | 2019-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910806217.4A Pending CN110426195A (en) | 2019-08-29 | 2019-08-29 | A kind of helicoid hydraulic motor hot environment simulator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111562121A (en) * | 2020-04-28 | 2020-08-21 | 重庆科技学院 | Multifunctional power drilling tool performance test bench |
| CN111594136A (en) * | 2020-04-28 | 2020-08-28 | 重庆科技学院 | Multifunctional power drilling tool experiment platform |
| RU2770958C1 (en) * | 2021-12-10 | 2022-04-25 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | Test bench for working pairs of hydraulic downhole engines |
-
2019
- 2019-08-29 CN CN201910806217.4A patent/CN110426195A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111562121A (en) * | 2020-04-28 | 2020-08-21 | 重庆科技学院 | Multifunctional power drilling tool performance test bench |
| CN111594136A (en) * | 2020-04-28 | 2020-08-28 | 重庆科技学院 | Multifunctional power drilling tool experiment platform |
| CN111562121B (en) * | 2020-04-28 | 2022-03-01 | 重庆科技学院 | Multifunctional power drilling tool performance test bench |
| CN111594136B (en) * | 2020-04-28 | 2022-04-29 | 重庆科技学院 | Multifunctional power drilling tool experiment platform |
| RU2770958C1 (en) * | 2021-12-10 | 2022-04-25 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | Test bench for working pairs of hydraulic downhole engines |
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