CN109340137A - For depressurizing the immersible pump of method exploitation combustible ice - Google Patents
For depressurizing the immersible pump of method exploitation combustible ice Download PDFInfo
- Publication number
- CN109340137A CN109340137A CN201811070704.0A CN201811070704A CN109340137A CN 109340137 A CN109340137 A CN 109340137A CN 201811070704 A CN201811070704 A CN 201811070704A CN 109340137 A CN109340137 A CN 109340137A
- Authority
- CN
- China
- Prior art keywords
- seal closure
- rotor
- intake valve
- immersible pump
- pressure sensor
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
- F04D13/083—Units comprising pumps and their driving means the pump being electrically driven for submerged use and protected by a gas-bell
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
- F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0099—Equipment or details not covered by groups E21B15/00 - E21B40/00 specially adapted for drilling for or production of natural hydrate or clathrate gas reservoirs; Drilling through or monitoring of formations containing gas hydrates or clathrates
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/136—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas explosion-proof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
Abstract
The invention discloses a kind of for depressurizing the immersible pump of method exploitation combustible ice, it include outer housing, it is mounted on the intracorporal stator winding of shell, it is mounted on the seal closure of the non-magnetic metal material of stator winding inner circumferential, it is mounted on the rotor in seal closure by bearing, and is connected to the pump housing of outer housing and seal closure lower end；Stator winding and rotor constitute a motor, are rotatably equipped with impeller in the pump housing, the first ratchet assembly is connected between impeller and the shaft of rotor；The shaft of rotor is passed down through the pump housing, and the lower end of shaft is connected with a drilling rod by the second ratchet assembly.Drilling rod can be driven to rotate when motor rotates clockwise, such immersible pump can be got into the rock stratum below immersible pump installation site by drilling rod, and the state that such immersible pump can be kept upright does not need additional fixation；When motor rotates counterclockwise, only impeller rotation keeps immersible pump in running order.
Description
Technical field
The invention belongs to water pump fields, and in particular to a kind of for depressurizing the immersible pump of method exploitation combustible ice.
Background technique
Document number be CN102195387B disclose a kind of sealing structure of immersible pump, including conventional structure form by turn
The liquid pump that the dragging motor that the stator of son and insertion winding is constituted is driven by its shaft, and be located at outermost anti-
Protect housing；It is characterized by: above-mentioned mover and the spindle portion above-mentioned liquid pump operating of driving and outside the liquid pump, are
It is surrounded by metal sealing Isolated Shield with stereogenic, also, the metal between the rotor and the stator is close
Envelope Isolated Shield should locally be served as using slim non-magnet material, moreover, the metal of the slim non-magnet material production is close
Envelope Isolated Shield be locally be arranged in be close to insertion winding stator inner ring circumferential location, moreover, metal sealing every
Electric machine shaft gland is provided in the bottom of back taper from cover；What described metal sealing Isolated Shield itself was related to has the gap all
It is to be realized by non-removable welding procedure.--- in the patent formula, since metal sealing Isolated Shield cover only exists
Lower end is endless totally enclosed with electric machine shaft gland position, so the immersible pump must keep state ability of the motor in upper liquid pump under
It can guarantee its sealing effect, therefore generally requiring could be used immersible pump fixing-stable position using fixing piece when in use, when
This kind of immersible pump (for example in the combustible ice exploitation in seabed, depth is more than 300 meters), this kind when the biggish seabed of depth uses
The fixation of immersible pump just has larger difficulty, and is difficult to reach the effect for keeping sealing performance for a long time using common immersible pump
Fruit.
Summary of the invention
The technical problems to be solved by the present invention are: in view of the deficienciess of the prior art, provide one kind can guarantee it is close
Envelope effect and the immersible pump that combustible ice is exploited for depressurizing method being fixed conveniently.
Purpose to realize the present invention, is achieved using following technical scheme: one kind is for depressurizing method exploitation combustible ice
Immersible pump, include outer housing, be mounted on the intracorporal stator winding of shell, be mounted on the non-magnetic metal of stator winding inner circumferential
The seal closure of material is mounted on the rotor in seal closure by bearing, and is connected to outer housing and seal closure lower end
The pump housing；The stator winding and rotor constitute a motor, and the rotor lower end passes through seal closure and and seal closure
Pass through sealing bearing connection between lower end；The seal closure lower end is in infundibulate low between the senior middle school of periphery；
It is rotatably equipped with impeller in the pump housing, the first ratchet assembly is connected between the impeller and the shaft of rotor；
The shaft of the rotor is passed down through the pump housing, and the lower end of shaft is connected with one by the second ratchet assembly
Drilling rod；
The rotor drives drilling rod to rotate clockwise by the second ratchet assembly, and the rotor passes through the first ratchet group
Part driving impeller rotates backward.
Gas generating unit, the sealing are installed as a preferred solution: being located above seal closure in the outer housing
The upper end of cover is welded with the intake valve for the metal material that one is vertically arranged；The gas generating unit is connect with intake valve；Institute
The mixture for being loaded with potassium chlorate and manganese dioxide in gas generating unit is stated, is equipped with outside the gas generating unit to add
The heating device of hot gas generating device, the heating device are electrically connected with the controller for being mounted on outer housing inner top；
A horizontal seat board is formed in the intake valve, seat board intermediary form has air inlet, the seat board lower end
It is equipped with and seals the valve block to offset with seat board, the first spring is installed between the valve block lower end and intake valve lower end；It is described
It is located above the seat board in intake valve and an annular heater is installed；It is located at heater and valve block in the intake valve
Top, which is provided with, is wound into columned low-melting-point metal silk；It is located above low-melting-point metal silk in the intake valve and is equipped with one
To the compression valve block for being compacted the low-melting-point metal silk of fusing downwards, pacify between the compression valve block upper end and intake valve upper end
Equipped with a second spring；The heater is electrically connected with controller.
As a preferred solution: further including having remote controler, the controller includes to receive the wireless of remote controller signal
Electric receiving module.
As a preferred solution: the outer housing outer wall is equipped with first pressure sensor module,InstituteState installation in seal closure
There is second pressure sensor module, the first pressure sensor module and second pressure sensor module are logical with controller respectively
Conducting wire is crossed to electrically connect or electrically connect by radio；When the pressure value that the first pressure sensor module detects is greater than the
The pressure value that two pressure sensor modules detect, controller controls heating device and starts work, until second pressure sensor die
After the pressure value that block detects is greater than the pressure value that first pressure sensor module detects, controller control heating device stops
Only, then controlling heater fever blocks intake valve thoroughly the fusing of low-melting-point metal silk.
As a preferred solution: the low-melting-point metal silk is scolding tin.
As a preferred solution: the gas generating unit is canister, temperature sensing is installed in gas generating unit
Device, gas generating unit are coated with heat-insulating material；The temperature sensor is electrically connected with controller, in heater stop plus
Heat, and when temperature sensor detects temperature lower than set temperature, controller just starts heater and works.
Compared with prior art, the beneficial effects of the present invention are: the motor of immersible pump has there are two function in the present invention,
Drilling rod can be driven to rotate when motor rotates clockwise, such immersible pump can be got into below immersible pump installation site by drilling rod
In rock stratum, the state that such immersible pump can be kept upright does not need additional fixation；It is only driven when motor rotates counterclockwise
Wheel rotation keeps immersible pump in running order, and due to being provided with the second ratchet assembly, drilling rod will not be with wheel rotation.The gas
Body generating device is filled with gas during immersible pump dive in seal closure, reduces the seal request of sealing position of bearings,
And the gas of corresponding pressure value can be filled with according to the pressure value of the working depth position of immersible pump.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the structural schematic diagram of air inlet valve portion.
1, stator winding；11, outer housing；
2, rotor；21, seal closure；
3, the pump housing；31, go out liquid interface；32, impeller；321, the first ratchet assembly；33, support leg；
4, drilling rod；41, the second ratchet assembly；
5, gas generating unit；
6, heating device；
7, intake valve；70, seat board；71, valve block；711, the first spring；72, heater；73, low-melting-point metal silk；74, it compresses
Valve block；741, second spring；
8, controller；
91, first pressure sensor module；92, second pressure sensor module.
Specific embodiment
Embodiment 1
It is a kind of for depressurizing the immersible pump of method exploitation combustible ice described in the present embodiment according to Fig. 1 and Fig. 2, it include outer
Shell 11 is mounted on the intracorporal stator winding 1 of shell, is mounted on the seal closure of the non-magnetic metal material of stator winding inner circumferential
21, the rotor 2 in seal closure is mounted on by bearing, and be connected to the pump housing 3 of outer housing and seal closure lower end；It is described
Stator winding and rotor constitute a motor, and the rotor lower end leads to across seal closure and seal closure lower end
Cross the connection of sealing bearing；The seal closure lower end is in infundibulate low between the senior middle school of periphery.The pump housing lower part is equipped with water inlet, institute
It states pump housing side upper end and is connected with out liquid interface 31, liquid interface is for connecting liquid-transport pipe-line out.
It is rotatably equipped with impeller 32 in the pump housing, the first ratchet is connected between the impeller and the shaft of rotor
Component 321.
The shaft of the rotor is passed down through the pump housing, and the lower end of shaft is connected by the second ratchet assembly 41
There is a drilling rod 4.
The rotor drives drilling rod to rotate clockwise by the second ratchet assembly, and the rotor passes through the first spine
Wheel assembly driving impeller rotates backward.
There are two functions for the motor tool of immersible pump in the present invention, drilling rod can be driven to rotate when motor rotates clockwise, this
Sample immersible pump can get into the rock stratum below immersible pump installation site (rock stratum of combustible ice exploitation bottom) by drilling rod, in this way
The state that immersible pump can be kept upright does not need additional fixation；When motor rotates counterclockwise, only impeller rotation makes
Immersible pump is in running order, and due to being provided with the second ratchet assembly, drilling rod will not be with wheel rotation, it is ensured that the normal work of impeller
Make.
The pump housing lower end is connected with multiple support legs 33, and the second ratchet assembly is between each support leg, in drilling rod
It pierces after the rock stratum of seabed, immersible pump is against on rock stratum by support leg, and drilling rod then guarantees immersible pump and is kept upright state.
It is located above seal closure in the outer housing and gas generating unit 5 is installed, the upper end welding of the seal closure
There is the intake valve 7 of a metal material being vertically arranged；The gas generating unit is connect with intake valve；The gas fills
It is loaded with the mixture of potassium chlorate and manganese dioxide in setting, is equipped with outside the gas generating unit and is filled to heat gas
The heating device 6 set, the heating device are electrically connected with the controller for being mounted on outer housing inner top.The heating device is pottery
Porcelain heater or electromagnetic heater.When heating devices heat, potassium chlorate, which is decomposed, generates oxygen, the gas in gas generating unit
Pressure gradually rises, and is filled in electric machine casing by intake valve.
A horizontal seat board 70 is formed in the intake valve 7, seat board intermediary form has air inlet, the valve seat
Plate lower end, which is equipped with, seals the valve block 71 to offset with seat board, is equipped with the first bullet between the valve block lower end and intake valve lower end
Spring 711；It is located above the seat board in the intake valve and an annular heater 72 is installed；It is located in the intake valve
It is provided with above heater and valve block and is wound into columned low-melting-point metal silk 73；It is located at low-melting-point metal in the intake valve
Silk top be equipped with a compression valve block 74 the low-melting-point metal silk of fusing to be compacted downwards, the compressions valve block upper end and
One second spring 741 is installed between intake valve upper end.
The heater is electrically connected with controller.The heater is electromagnetic heater.
The outer housing outer wall is equipped with first pressure sensor module,InstituteIt states and second pressure sensing is installed in seal closure
Device module, the first pressure sensor module 91 and second pressure sensor module 92 pass through conducting wire Electricity Federation with controller respectively
It connects or is electrically connected by radio；When the pressure value that the first pressure sensor module detects is sensed greater than second pressure
The pressure value that device module detects, controller controls heating device and starts work, until what second pressure sensor module detected
After pressure value is greater than the pressure value that first pressure sensor module detects, controller controls heater stop, then controls
The fusing of low-melting-point metal silk blocks intake valve thoroughly by heater fever.
The controller can be SCM system, and controller is accompanied with battery and powers for it.The controller is furnished with
Reception of wireless signals module can start work by remote control control controller.
The low-melting-point metal silk is scolding tin.The valve block is preferably heat resistant rubber, in melts soldering tin and will be on seat board
Air inlet it is completely enclosed during, it is ensured that the sealing performance between valve block and seat board.More preferably in valve block upper surface pair
The position of air inlet is answered to connect one layer of heat insulation layer.
Since the working depth of immersible pump is larger, if being first filled with high pressure gas in seal closure before immersible pump installation,
The sealing performance requirement for then sealing position of bearings is very high, is otherwise difficult to avoid that high pressure gas leakage, once high pressure gas is let out
Leakage, and is difficult to ensure the air pressure in seal closure, and each immersible pump due to working environment it is different, the pressure value in locating water is not
Together, it is just right to be also difficult to institute's inflatable body pressure for inflation in advance.Therefore it is first pre- in the outer housing of immersible pump in the present embodiment
Set the air accumulator filled with high pressure gas or liquefied gas, to immersible pump dive to operating position during by the gas in air accumulator
Body is gradually filled in seal closure.In addition, making air inlet using heater heating scolding tin to guarantee being absolutely sealed for seal closure top
Valve is completely enclosed, avoids leaking for gas molecule in seal closure.
In addition, when pressure of the air pump in air accumulator is reduced to suitable with sealing internal mask pressure, it can will be in air accumulator
Gas as much as possible continues to be filled in seal closure, the amount of gas storage needed for opposite reduction air accumulator.Two-stage may be selected in the air pump
Or the plunger pump of three-level pressurization.
The gas generating unit is canister, and canister inner wall is equipped with erosion resistant coating, installation in gas generating unit
There is temperature sensor, gas generating unit is coated with heat-insulating material；The temperature sensor is electrically connected with controller, is being heated
Device stops heating, and when temperature sensor detects temperature lower than set temperature, controller just starts heater and works.
Claims (3)
1. a kind of immersible pump that combustible ice is exploited for depressurizing method, includes outer housing, is mounted on the intracorporal stator winding of shell,
It is mounted on the seal closure of the non-magnetic metal material of stator winding inner circumferential, the rotor in seal closure is mounted on by bearing,
And it is connected to the pump housing of outer housing and seal closure lower end；The stator winding and rotor constitute a motor, the electricity
Machine rotor lower end is connect across seal closure and by sealing bearing seal closure lower end；The seal closure lower end is high in periphery
Intermediate low infundibulate；
It is characterized by:
It is rotatably equipped with impeller in the pump housing, the first ratchet assembly is connected between the impeller and the shaft of rotor；
The shaft of the rotor is passed down through the pump housing, and the lower end of shaft is connected with one by the second ratchet assembly
Drilling rod；
The rotor drives drilling rod to rotate clockwise by the second ratchet assembly, and the rotor passes through the first ratchet group
Part driving impeller rotates backward；
It is located above seal closure in the outer housing and gas generating unit is installed, the upper end of the seal closure is welded with one
The intake valve for the metal material being vertically arranged；The gas generating unit is connect with intake valve；It is contained in the gas generating unit
Mixture equipped with potassium chlorate and manganese dioxide, the gas generating unit are equipped with adding to heat gas generating device outside
Thermal, the heating device are electrically connected with the controller for being mounted on outer housing inner top；
A horizontal seat board is formed in the intake valve, seat board intermediary form has air inlet, the seat board lower end
It is equipped with and seals the valve block to offset with seat board, the first spring is installed between the valve block lower end and intake valve lower end；It is described
It is located above the seat board in intake valve and an annular heater is installed；It is located at heater and valve block in the intake valve
Top, which is provided with, is wound into columned low-melting-point metal silk；It is located above low-melting-point metal silk in the intake valve and is equipped with one
To the compression valve block for being compacted the low-melting-point metal silk of fusing downwards, pacify between the compression valve block upper end and intake valve upper end
Equipped with a second spring；The heater is electrically connected with controller；
The outer housing outer wall is equipped with first pressure sensor module,InstituteIt states and second pressure sensor die is installed in seal closure
Block, the first pressure sensor module and second pressure sensor module are electrically connected or are led to by conducting wire with controller respectively
Radio is crossed to electrically connect；When the pressure value that the first pressure sensor module detects is examined greater than second pressure sensor module
The pressure value measured, controller controls heating device and starts work, until the pressure value that second pressure sensor module detects is big
After the pressure value that first pressure sensor module detects, controller controls heater stop, then controls heater hair
The fusing of low-melting-point metal silk blocks intake valve thoroughly by heat.
2. as described in claim 1 for depressurizing the immersible pump of method exploitation combustible ice, it is characterised in that: further include having remote control
Device, the controller include the radio reception module to receive remote controller signal.
3. as claimed in claim 2 for depressurizing the immersible pump of method exploitation combustible ice, it is characterised in that: the low-melting-point metal
Silk is scolding tin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811070704.0A CN109340137A (en) | 2016-12-22 | 2016-12-22 | For depressurizing the immersible pump of method exploitation combustible ice |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611194558.3A CN106762701B (en) | 2016-12-22 | 2016-12-22 | For depressurizing the immersible pump of method exploitation combustible ice |
| CN201811070704.0A CN109340137A (en) | 2016-12-22 | 2016-12-22 | For depressurizing the immersible pump of method exploitation combustible ice |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611194558.3A Division CN106762701B (en) | 2016-12-22 | 2016-12-22 | For depressurizing the immersible pump of method exploitation combustible ice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109340137A true CN109340137A (en) | 2019-02-15 |
Family
ID=58899204
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611194558.3A Expired - Fee Related CN106762701B (en) | 2016-12-22 | 2016-12-22 | For depressurizing the immersible pump of method exploitation combustible ice |
| CN201811070688.5A Withdrawn CN109058125A (en) | 2016-12-22 | 2016-12-22 | For depressurizing the immersible pump of method exploitation combustible ice |
| CN201811070704.0A Withdrawn CN109340137A (en) | 2016-12-22 | 2016-12-22 | For depressurizing the immersible pump of method exploitation combustible ice |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611194558.3A Expired - Fee Related CN106762701B (en) | 2016-12-22 | 2016-12-22 | For depressurizing the immersible pump of method exploitation combustible ice |
| CN201811070688.5A Withdrawn CN109058125A (en) | 2016-12-22 | 2016-12-22 | For depressurizing the immersible pump of method exploitation combustible ice |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN106762701B (en) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4123858A (en) * | 1971-07-06 | 1978-11-07 | Batchelder George W | Versatile submersible device for dredging or other underwater functions |
| JPS527644B2 (en) * | 1972-09-14 | 1977-03-03 | ||
| JPS5391401A (en) * | 1977-01-24 | 1978-08-11 | Shibaura Eng Works Ltd | Underwater pump |
| SU987188A1 (en) * | 1981-07-06 | 1983-01-07 | Мордовский государственный университет им.Н.П.Огарева | Auger pump for pumping viscous media |
| JPH0689554B2 (en) * | 1989-07-05 | 1994-11-09 | 東亜建設工業株式会社 | Dredging device |
| JP3755587B2 (en) * | 2001-06-29 | 2006-03-15 | 株式会社東洋電機工業所 | Sediment removal equipment |
| JP4426367B2 (en) * | 2004-04-30 | 2010-03-03 | 三井造船株式会社 | Gas hydrate marine transportation method and gas hydrate marine transportation ship |
| US7530392B2 (en) * | 2005-12-20 | 2009-05-12 | Schlumberger Technology Corporation | Method and system for development of hydrocarbon bearing formations including depressurization of gas hydrates |
| CN1944950A (en) * | 2006-08-09 | 2007-04-11 | 中国石油大学(华东) | Method for recovering sea bottom hydrate by underwell gas and water separation and back injection |
| CN102788026B (en) * | 2011-05-16 | 2015-07-08 | 梁嘉麟 | Anti-leaking sealing method of full-sealing liquid pump of with detachable motor stator during operation |
| CN203604218U (en) * | 2013-11-22 | 2014-05-21 | 天津市华海通钢铁有限公司 | Immersible pump |
| CN105134616A (en) * | 2015-07-22 | 2015-12-09 | 上海要要玖消防科技有限公司 | Air pressure protection type immersible pump |
| CN105351210A (en) * | 2015-12-15 | 2016-02-24 | 河北潜达特种泵业有限公司 | Feeding packing auger type submersible mud pump |
-
2016
- 2016-12-22 CN CN201611194558.3A patent/CN106762701B/en not_active Expired - Fee Related
- 2016-12-22 CN CN201811070688.5A patent/CN109058125A/en not_active Withdrawn
- 2016-12-22 CN CN201811070704.0A patent/CN109340137A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CN106762701A (en) | 2017-05-31 |
| CN106762701B (en) | 2019-01-08 |
| CN109058125A (en) | 2018-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106499643B (en) | The immersible pump of combustible ice is exploited suitable for depressurizing method | |
| CN106545297B (en) | A kind of immersible pump suitable for decompression method exploitation combustible ice | |
| CN208331498U (en) | A kind of sealing and connecting device of utilidor | |
| CN106762701B (en) | For depressurizing the immersible pump of method exploitation combustible ice | |
| CN106704209B (en) | A kind of immersible pump for depressurizing method exploitation combustible ice | |
| CN207215391U (en) | Leak detection system | |
| CN201204504Y (en) | Positive draft balanced type explosion-proof diving dual-function motor | |
| CN205105068U (en) | Pressurized enclosure type brushless excitation synchronous motor | |
| CN207944910U (en) | It is a kind of cross cable cross gas pipeline packer | |
| CN201237546Y (en) | High temperature fluid machine rotating shaft mechanical seal test apparatus | |
| CN201204505Y (en) | Balanced type explosion-proof diving dual-function motor | |
| CN203082528U (en) | Automatic rapid filling system | |
| CN111579176B (en) | Mechanical seal environment testing system | |
| CN105402596B (en) | A kind of transferring device for the filling of satellite electric propulsion system xenon | |
| CN211975420U (en) | Shielding pump with water shortage protection | |
| CN205208544U (en) | Intelligence water balance system | |
| CN204493024U (en) | Fuel for motor vehicle heating equipment | |
| CN110354704B (en) | Foam generating device | |
| CN211118225U (en) | A leak protection conveyor for oil field exploitation | |
| CN104453785A (en) | Pneumatic heating device preventing hydrates from being generated at throttling part of gas well | |
| CN218627752U (en) | Furnace body insulation structure for perlite electric expansion furnace | |
| CN215372944U (en) | Soil heat supplementing device for ground source heat pump | |
| CN211370739U (en) | Sealed glue water pump for production | |
| CN109141034A (en) | Solid heating device | |
| CN114543151B (en) | Middle-deep geothermal heat supply device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190215 |
|
| WW01 | Invention patent application withdrawn after publication |