CN208982073U - Emulsion liquid-feed system and fully-mechanized mining working - Google Patents
Emulsion liquid-feed system and fully-mechanized mining working Download PDFInfo
- Publication number
- CN208982073U CN208982073U CN201821689516.1U CN201821689516U CN208982073U CN 208982073 U CN208982073 U CN 208982073U CN 201821689516 U CN201821689516 U CN 201821689516U CN 208982073 U CN208982073 U CN 208982073U
- Authority
- CN
- China
- Prior art keywords
- emulsion
- liquid
- pump
- emulsification
- feed system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000839 emulsion Substances 0.000 title claims abstract description 144
- 238000005065 mining Methods 0.000 title claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 80
- 238000004945 emulsification Methods 0.000 claims abstract description 56
- 239000003208 petroleum Substances 0.000 claims abstract description 30
- 238000004891 communication Methods 0.000 claims description 5
- 241000209094 Oryza Species 0.000 claims 2
- 235000007164 Oryza sativa Nutrition 0.000 claims 2
- 235000009566 rice Nutrition 0.000 claims 2
- 230000001804 emulsifying effect Effects 0.000 claims 1
- 230000003245 working effect Effects 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 239000006071 cream Substances 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000007115 recruitment Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001550 time effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Abstract
The utility model discloses a kind of emulsion liquid-feed system and fully-mechanized mining workings, the emulsion liquid-feed system includes emulsification liquid supplying device, dispensing box, emulsification pump and controller, the emulsification liquid supplying device includes electric submersible pump, the first liquid level sensor is provided in the dispensing box, one end of the controller and first liquid level sensor communicate to connect, the other end of the controller and the electric submersible pump communicate to connect, one end of the dispensing box is connected to by the first petroleum pipeline with the electric submersible pump, the other end of the dispensing box is connected to by the second petroleum pipeline with the emulsification pump.Implement the utility model, dispensing box is connected to by electric submersible pump with emulsification liquid supplying device, and the first liquid level sensor is set in dispensing box, when the first liquid level sensor detects the liquid level of the emulsion in dispensing box lower than preset value, controller controls electric submersible pump and opens, the emulsion emulsified in liquid supplying device is delivered to dispensing box by electric submersible pump, realizes automatic addition emulsion.
Description
Technical field
The utility model relates to coal mine machinery field more particularly to a kind of emulsion liquid-feed system and fully-mechanized mining workings.
Background technique
In China, fully mechanized coal winning technology technology is increasingly mature, and condition of compatibility is more and more wider, comprehensive mechanical coal mining
Method has become China's mainstream coal-mining method, currently, being directed to different coal mining geological conditions, there is correspondingly mature mating integrated machine
Tool coal excavation apparatus.Fully-mechanized mining working coal excavation apparatus core technology is working face hydraulic system, as China's comprehensive mechanization is adopted
Coal equipment is to high voltage, high power, and hydraulic support is to height work drag direction development, increasingly along with working face arrangement length
It is long therefore higher and higher to the requirement of the fluid supply capacity of fully-mechanized mining working emulsification pump, in underground, due to the mobile power transformation of fully-mechanized mining working
It stands, the large scale equipments such as emulsion power pack are placed and are laid on the flat car of track, the moveable equipment that formation length is about 100 meters
Platform, because of referred to herein as equipment train.
Emulsion pump box, the dispensing box of existing fully-mechanized mining working are placed on equipment train jointly, with the advance of the face
It moves together, checks the emulsion capacity in emulsion pump box in the climbing to equipment train of operating personnel's certain interval of time, when
When emulsion in emulsion pump box is on the low side, by manually adding emulsion into emulsion pump box, automatic addition cannot achieve
Emulsion, low efficiency are at high cost.Simultaneously as equipment train is usual and haulage gate rubber conveyer is arranged in same lane
In road, as the power of liquefaction pumping plant is increasing, the volume of emulsification pump correspondingly also will increase, this allows for emulsification pump and glue
Spacing accordingly reduces between band conveyer, the increased volume of equipment, has tied up employee's working space, and operating personnel emulsifies in addition
When liquid, needs for emulsion to be carried to beside emulsion pump box, using chain block, emulsion oil drum is sling to emulsion pump
Emulsion is added in case, large labor intensity, operation are inconvenient, and man efficiency is low, causes working face downtime longer to cream
Change in pump box and add emulsion, so that being manually added to emulsion more and more difficult in emulsion pump box, increases operating risk,
Further increase recruitment cost.
Utility model content
The purpose of the utility model is to overcome the prior arts to need artificial addition emulsion, and at high cost, low efficiency is not
Foot provides a kind of emulsion liquid-feed system and fully-mechanized mining working.
The technical solution of the utility model provides a kind of emulsion liquid-feed system, including emulsification liquid supplying device, dispensing box,
Emulsification pump and controller, the emulsification liquid supplying device includes electric submersible pump, and the first liquid level sensor is provided in the dispensing box,
One end of the controller and first liquid level sensor communicate to connect, and the other end of the controller and the electric submersible pump are logical
One end of letter connection, the dispensing box is connected to by the first petroleum pipeline with the electric submersible pump, and the other end of the dispensing box passes through
Second petroleum pipeline is connected to the emulsification pump.
Further, the emulsification liquid supplying device further includes air driven pump, emulsion pump box and at least one emulsion oil
Bucket, the electric submersible pump are arranged in the emulsion pump box, and the emulsion pump box passes through the electric submersible pump and the dispensing box
Connection, the air driven pump pass through third petroleum pipeline respectively and are connected to the emulsion oil drum and the emulsion pump box.
Further, the emulsification liquid supplying device further includes the cut-off being turned on or off for controlling the air driven pump
Valve, the shut-off valve and the controller communicate to connect.
Further, be provided with the second liquid level sensor in the emulsion pump box, one end of the controller with it is described
The communication connection of second liquid level sensor, the other end of the controller and the shut-off valve communicate to connect.
Further, attention device, the attention device and the controller communication link are additionally provided on the emulsion pump box
It connects.
Further, the emulsion oil drum is multiple, and the emulsification liquid supplying device further includes coupler, the tap
Oil outlet and multiple inlet ports are provided on device, the oil outlet is connected to by the 4th petroleum pipeline with the air driven pump, described
Multiple inlet ports pass through the 5th petroleum pipeline respectively and are connected to multiple emulsion oil drums.
Further, the diameter of the 4th petroleum pipeline is 40 millimeters -60 millimeters.
Further, the diameter of the 5th petroleum pipeline is 20 millimeters -40 millimeters.
The technical solution of the utility model provides a kind of fully-mechanized mining working, including connection roadway, mining equipment train, Yi Jiru
The emulsification liquid supplying device of the preceding emulsion liquid-feed system, the emulsion liquid-feed system is arranged in the connection roadway
Interior, the dispensing box and emulsification pump of the emulsion liquid-feed system are arranged on the mining equipment train.
The technical solution of the utility model provides a kind of fully-mechanized mining working, including chamber, mining equipment train and as before
The emulsification liquid supplying device of the emulsion liquid-feed system, the emulsion liquid-feed system is arranged in the chamber,
The dispensing box and emulsification pump of the emulsion liquid-feed system are arranged on the mining equipment train.
Dispensing box is filled by electric submersible pump and emulsion supply after adopting the above technical scheme, having the following beneficial effects:
Connection is set, and the first liquid level sensor is set in dispensing box, when the first liquid level sensor detects the emulsion in dispensing box
Liquid level be lower than preset value when, controller control electric submersible pump open, by electric submersible pump will emulsify liquid supplying device in emulsion
It is delivered to dispensing box, realizes automatic addition emulsion, without artificial addition emulsion, working efficiency is improved, reduces cost.
Detailed description of the invention
Referring to attached drawing, the disclosure of the utility model will be easier to understand.It is understood that these attached drawings are used only for
The purpose of explanation, and be not intended to and the protection scope of the utility model is construed as limiting.In figure:
Fig. 1 is a kind of structural schematic diagram for emulsion liquid-feed system that the utility model embodiment one provides；
Fig. 2 is the structural schematic diagram of coupler shown in FIG. 1.
The appended drawing reference table of comparisons:
1- emulsifies liquid supplying device；11- electric submersible pump；12- air driven pump；13- emulsion pump box；14- emulsion oil drum；15-
Shut-off valve；16- coupler；161- oil outlet；162- inlet port；2- dispensing box；3- emulsification pump；The first petroleum pipeline of 4-；5- second
Petroleum pipeline；6- third petroleum pipeline；The 4th petroleum pipeline of 7-；The 5th petroleum pipeline of 8-.
Specific embodiment
Further illustrate specific embodiment of the present utility model with reference to the accompanying drawing.
It is readily appreciated that, technical solution according to the present utility model, in the case where not changing the utility model in essence spirit, this field
The various structures mode that can be replaced mutually of those skilled in the art and implementation.Therefore, following specific embodiments and
Attached drawing is only the exemplary illustration to the technical solution of the utility model, and is not to be construed as the whole of the utility model or is considered as
Utility model technical solution is defined or limited.
It mentions in the present specification or up, down, left, right, before and after, front, the back side, top, the bottom that may mention etc.
Positional terms are defined relative to each construction shown in the drawings, they are opposite concepts, and it is therefore possible to can root
Correspondingly changed according to different location locating for it, different use states.So also should not be by these or others side
Position term is construed to restricted term.
Embodiment one
As depicted in figs. 1 and 2, Fig. 1 is a kind of structure for emulsion liquid-feed system that the utility model embodiment one provides
Schematic diagram, Fig. 2 are the structural schematic diagrams of coupler shown in FIG. 1, the emulsion liquid-feed system include emulsification liquid supplying device 1,
Dispensing box 2, emulsification pump 3 and controller are provided with electric submersible pump 11, setting in the dispensing box 2 in the emulsification liquid supplying device 1
Have the first liquid level sensor, one end of the controller and first liquid level sensor communicate to connect, the controller it is another
One end and the electric submersible pump 11 communicate to connect, and one end of the dispensing box 2 is connected by the first petroleum pipeline 4 with the electric submersible pump 11
Logical, the other end of the dispensing box 2 is connected to by the second petroleum pipeline 5 with the emulsification pump 3.
Emulsification liquid supplying device 1 is for providing emulsion, and electric submersible pump 11 is for controlling emulsification liquid supplying device 1 and dispensing box
2 connection or closing, dispensing box 2 are used to the emulsion emulsified in liquid supplying device 1 being delivered to emulsification pump 3, and the first liquid level passes
Liquid level of the sensor for the emulsion in real-time detection dispensing box 2, and the liquid level information that will test is delivered to controller, when the
When one liquid level sensor detects the liquid level of emulsion lower than preset value, controller controls electric submersible pump 11 and opens, and emulsion is supplied
It is delivered in dispensing box 2 to the emulsion in device 1, realizes automatic addition emulsion.
Emulsion liquid-feed system provided by the utility model connects dispensing box by electric submersible pump and emulsification liquid supplying device
It is logical, and the first liquid level sensor is set in dispensing box, when the first liquid level sensor detects the liquid of the emulsion in dispensing box
When position is lower than preset value, controller controls electric submersible pump and opens, and is conveyed by electric submersible pump by the emulsion in liquid supplying device is emulsified
To dispensing box, automatic addition emulsion is realized, without artificial addition emulsion, improve working efficiency, reduce cost.
Optionally, the emulsification liquid supplying device 1 further includes air driven pump 12, emulsion pump box 13 and at least one emulsion
Oil drum 14, the electric submersible pump 11 are arranged in the emulsion pump box 13, and the emulsion pump box 13 passes through the electric submersible pump 11
It is connected to the dispensing box 2, the air driven pump 12 passes through third petroleum pipeline 6 and the emulsion oil drum 14 and the emulsification respectively
Liquid pump case 13 is connected to.
Air driven pump 12 is for the emulsion in emulsion oil drum 14 to be delivered in emulsion pump box 13, emulsion pump box 13
For providing emulsion for dispensing box 2, emulsion oil drum 14 is used to provide emulsion for emulsion pump box 13, passes through air driven pump
12, emulsion pump box 13 and emulsion oil drum 14 easily facilitate addition emulsion.
Optionally, the emulsification liquid supplying device 1 further includes section being turned on or off for controlling the air driven pump 12
Only valve 15, the shut-off valve 15 are communicated to connect with the controller.
When needing emulsion is added in emulsion pump box 13, controller controls shut-off valve 15 and opens, and makes air driven pump 12
Emulsion in emulsion oil drum 14 is delivered in emulsion pump box 13, otherwise controller control shut-off valve 15 stops, and makes gas
Dynamic pump 12 stops adding emulsion into emulsion pump box 13, realizes the start and stop of Pneumatic automatic-control pump 12.
Optionally, be provided with the second liquid level sensor in the emulsion pump box 13, one end of the controller with it is described
The communication connection of second liquid level sensor, the other end of the controller and the shut-off valve 15 communicate to connect.
Liquid level of second liquid level sensor for the emulsion in real-time detection emulsion pump box 13, when the second level sensing
When device detects the liquid level of the emulsion in emulsion pump box 13 lower than preset value, controller controls shut-off valve 15 and opens, and makes gas
Emulsion in emulsion oil drum 14 is delivered in emulsion pump box 13 by dynamic pump 12.
Optionally, attention device, the attention device and the controller communication link are additionally provided on the emulsion pump box 13
It connects.
Attention device can be indicator light, or combined aural and visual alarm, when the second liquid level sensor detects emulsion pump
When the liquid level of emulsion in case 13 is lower than preset value, controller control attention device is alarmed, and is played and is reminded user's in time
Effect.
Optionally, as shown in Fig. 2, the emulsion oil drum 14 be it is multiple, the emulsification liquid supplying device 1 further include tap
Device 16, oil outlet 161 and multiple inlet ports 162 are provided on the coupler 16, and the oil outlet 161 is defeated by the 4th
Oil pipe 7 is connected to the air driven pump 12, and the multiple inlet port 162 passes through the 5th petroleum pipeline 8 and multiple emulsions respectively
Oil drum 14 is connected to.
Inlet port 162 is three, and coupler 16 is T-shaped round steel pipe, and inlet port 162 is welded on coupler 16, often
A inlet port 162 is connected to respectively by the 5th petroleum pipeline 8 with emulsion oil drum 14, by multiple inlet ports 162 can accelerate by
Emulsion in emulsion oil drum 14 is delivered in emulsion pump box 13, to further increase working efficiency.
Optionally, in order to further reduce the cost, the diameter of the 4th petroleum pipeline 7 is 40 millimeters -60 millimeters.It is preferred that
Ground, the diameter of the 4th petroleum pipeline 7 are 51 millimeters.
Optionally, in order to further reduce the cost, the diameter of the 5th petroleum pipeline 8 is 20 millimeters -40 millimeters.It is preferred that
Ground, the diameter of the 5th petroleum pipeline 8 are 32 millimeters.
Embodiment two
The technical solution of the utility model provides a kind of fully-mechanized mining working, including connection roadway, mining equipment train, Yi Jiru
The emulsification liquid supplying device of the preceding emulsion liquid-feed system, the emulsion liquid-feed system is arranged in the connection roadway
Interior, the dispensing box and emulsification pump of the emulsion liquid-feed system are arranged on the mining equipment train.
Fully-mechanized mining working provided by the utility model is arranged in connection roadway by that will emulsify liquid supplying device, will match liquid
Case and emulsification pump are arranged on mining equipment train, separate emulsification liquid supplying device with dispensing box and emulsification pump, convenient for addition
Emulsion reduces operating personnel's labor intensity and operating risk.
Embodiment three
The technical solution of the utility model provides a kind of fully-mechanized mining working, including chamber, mining equipment train and as before
The emulsification liquid supplying device of the emulsion liquid-feed system, the emulsion liquid-feed system is arranged in the chamber,
The dispensing box and emulsification pump of the emulsion liquid-feed system are arranged on the mining equipment train.
Fully-mechanized mining working provided by the utility model is arranged in chamber, by dispensing box by that will emulsify liquid supplying device
It is arranged on mining equipment train with emulsification pump, separates emulsification liquid supplying device with dispensing box and emulsification pump, convenient for addition cream
Change liquid, reduces operating personnel's labor intensity and operating risk.
In conclusion emulsion liquid-feed system provided by the utility model and fully-mechanized mining working, latent by electricity by dispensing box
Pump is connected to emulsification liquid supplying device, and the first liquid level sensor is arranged in dispensing box, when the first liquid level sensor detects
When the liquid level of emulsion in dispensing box is lower than preset value, controller controls electric submersible pump and opens, and is supplied emulsion by electric submersible pump
It is delivered to dispensing box to the emulsion in device, realizes automatic addition emulsion, without artificial addition emulsion, improves work effect
Rate reduces cost.Meanwhile being arranged in connection roadway or chamber by the way that liquid supplying device will be emulsified, by dispensing box and emulsification pump
It is arranged on mining equipment train, separates emulsification liquid supplying device with dispensing box and emulsification pump, convenient for addition emulsion, reduces
Operating personnel's labor intensity and operating risk.
Above-described is only the principles of the present invention and preferred embodiment.It should be pointed out that for the general of this field
For logical technical staff, on the basis of the utility model principle, several other modifications can also be made, also should be regarded as practical
Novel protection scope.
Claims (10)
1. a kind of emulsion liquid-feed system, which is characterized in that including emulsifying liquid supplying device, dispensing box, emulsification pump and controller,
The emulsification liquid supplying device includes electric submersible pump, is provided with the first liquid level sensor in the dispensing box, and the one of the controller
End is communicated to connect with first liquid level sensor, and the other end of the controller and the electric submersible pump communicate to connect, described to match
One end of liquid case is connected to by the first petroleum pipeline with the electric submersible pump, and the other end of the dispensing box passes through the second petroleum pipeline and institute
State emulsification pump connection.
2. emulsion liquid-feed system as described in claim 1, which is characterized in that the emulsification liquid supplying device further includes pneumatic
Pump, emulsion pump box and at least one emulsion oil drum, the electric submersible pump are arranged in the emulsion pump box, the emulsion
Pump box is connected to by the electric submersible pump with the dispensing box, and the air driven pump passes through third petroleum pipeline and emulsion oil respectively
Bucket is connected to the emulsion pump box.
3. emulsion liquid-feed system as claimed in claim 2, which is characterized in that the emulsification liquid supplying device further includes being used for
The shut-off valve that the air driven pump is turned on or off is controlled, the shut-off valve and the controller communicate to connect.
4. emulsion liquid-feed system as claimed in claim 3, which is characterized in that be provided with the second liquid in the emulsion pump box
Level sensor, one end of the controller and second liquid level sensor communicate to connect, the other end of the controller and institute
State shut-off valve communication connection.
5. emulsion liquid-feed system as claimed in claim 4, which is characterized in that be additionally provided with warning on the emulsion pump box
Device, the attention device and the controller communicate to connect.
6. such as the described in any item emulsion liquid-feed systems of claim 2-5, which is characterized in that the emulsion oil drum is more
A, the emulsification liquid supplying device further includes coupler, and oil outlet and multiple inlet ports, institute are provided on the coupler
State oil outlet and be connected to the air driven pump by the 4th petroleum pipeline, the multiple inlet port pass through respectively the 5th petroleum pipeline with it is multiple
The emulsion oil drum connection.
7. emulsion liquid-feed system as claimed in claim 6, which is characterized in that the diameter of the 4th petroleum pipeline is 40 millis
- 60 millimeters of rice.
8. emulsion liquid-feed system as claimed in claim 6, which is characterized in that the diameter of the 5th petroleum pipeline is 20 millis
- 40 millimeters of millimeters of rice.
9. a kind of fully-mechanized mining working, including connection roadway and mining equipment train, which is characterized in that further include such as claim 1-8
The emulsification liquid supplying device of described in any item emulsion liquid-feed systems, the emulsion liquid-feed system is arranged described
In network lane, the dispensing box and emulsification pump of the emulsion liquid-feed system are arranged on the mining equipment train.
10. a kind of fully-mechanized mining working, including chamber and mining equipment train, which is characterized in that further include that claim 1-8 such as appoints
The emulsification liquid supplying device of emulsion liquid-feed system described in one, the emulsion liquid-feed system is arranged in the chamber
Interior, the dispensing box and emulsification pump of the emulsion liquid-feed system are arranged on the mining equipment train.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821689516.1U CN208982073U (en) | 2018-10-17 | 2018-10-17 | Emulsion liquid-feed system and fully-mechanized mining working |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821689516.1U CN208982073U (en) | 2018-10-17 | 2018-10-17 | Emulsion liquid-feed system and fully-mechanized mining working |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208982073U true CN208982073U (en) | 2019-06-14 |
Family
ID=66787994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821689516.1U Active CN208982073U (en) | 2018-10-17 | 2018-10-17 | Emulsion liquid-feed system and fully-mechanized mining working |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208982073U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754181A (en) * | 2022-03-23 | 2022-07-15 | 北京华海基业机械设备有限公司 | Intelligent slow-speed cut-off valve system |
-
2018
- 2018-10-17 CN CN201821689516.1U patent/CN208982073U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754181A (en) * | 2022-03-23 | 2022-07-15 | 北京华海基业机械设备有限公司 | Intelligent slow-speed cut-off valve system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA3042189C (en) | Mobile pump system | |
| US10837270B2 (en) | VFD controlled motor mobile electrically powered system for use in fracturing underground formations for electric fracturing operations | |
| ES2692897T3 (en) | Electrically energized, modular, mobile system for use in underground fracturing formations | |
| CN103926394B (en) | Three-dimensional visible testing system and method of dynamic water grouting model | |
| US11913315B2 (en) | Fracturing blender system and method using liquid petroleum gas | |
| CN104364465A (en) | System and process for extracting oil and gas by hydraulic fracturing | |
| US11187058B2 (en) | Pressure relief system for hydraulic pumping operations | |
| RU2008141292A (en) | COMBINED INSTALLATION OF UNDERGROUND REPAIR OF WELLS | |
| CN103210178A (en) | Subsea autonomous dispersant injection system and methods | |
| CN208982073U (en) | Emulsion liquid-feed system and fully-mechanized mining working | |
| CN113847007B (en) | Coal mine underground vehicle-mounted serial double-path sand-adding fracturing complete equipment | |
| CA3097652A1 (en) | Mobile pump system | |
| CN100526603C (en) | Coal cutting machine | |
| US10612678B1 (en) | Method of servicing an electronically controlled PRV system | |
| US20240044236A1 (en) | System and method for valve greasing in a well tree | |
| CN203429681U (en) | Multifunctional cable, wire, pipe direct-burying machine | |
| CN102102499B (en) | Plugging equipment for ground fracturing plugging water-bearing stratum | |
| CN102704868B (en) | Split-type remote control pressurized operation workover rig | |
| CN105201932B (en) | Group water solution blowout preventing control apparatus | |
| CN109164104B (en) | Gas-liquid two-phase countercurrent visual simulation test system for abandoned mine goaf | |
| CN204140047U (en) | A kind of small-sized mulling infusion device | |
| CN111322920A (en) | Automatic change stemming machine of stemming from filling blast hole | |
| CN202611622U (en) | Split-type remote control pressured operation well service hoist | |
| US11867043B1 (en) | Remotely-controlled pressure bleed-off system | |
| CA3080744C (en) | Mobile, modular, electrically powered system for use in fracturing underground formations using liquid petroleum gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |