CN111810110A - Low-temperature geothermal multipurpose wellhead device - Google Patents
Low-temperature geothermal multipurpose wellhead device Download PDFInfo
- Publication number
- CN111810110A CN111810110A CN202010621568.0A CN202010621568A CN111810110A CN 111810110 A CN111810110 A CN 111810110A CN 202010621568 A CN202010621568 A CN 202010621568A CN 111810110 A CN111810110 A CN 111810110A
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- pipe
- valve
- multipurpose
- filtering
- filter
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- 230000007246 mechanism Effects 0.000 claims abstract description 106
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 238000001914 filtration Methods 0.000 claims abstract description 35
- 238000004140 cleaning Methods 0.000 claims abstract description 34
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 19
- 238000005406 washing Methods 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 9
- 239000010865 sewage Substances 0.000 claims description 7
- 229910001018 Cast iron Inorganic materials 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/34—Arrangements for separating materials produced by the well
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/12—Devices for taking out of action one or more units of multi- unit filters, e.g. for regeneration
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a low-temperature geothermal multipurpose wellhead device, which comprises an oil pipe head used for connecting an oil pipe opening, filtering mechanisms used for filtering impurities, a flow dividing mechanism used for controlling the flow direction and a cleaning control mechanism, wherein the feeding ends of the two filtering mechanisms are connected with the flow dividing mechanism, the cleaning control mechanism is arranged between the flow dividing mechanism and the filtering mechanisms, the feeding end of the flow dividing mechanism is connected with an external expanding mechanism used for expanding, and the feeding end of the external expanding mechanism is provided with the oil pipe head. According to the invention, the low-temperature geothermal heat can be rapidly filtered and transmitted by utilizing the filtering mechanism, the water flow rate is detected in an experimental manner, the transmission efficiency is ensured, the distribution mechanism, the filtering mechanism and the cleaning control mechanism are matched, the rapid cleaning can be carried out when the filtering mechanism at one end is blocked, and the transmission is carried out by utilizing the other filtering mechanism, so that the transmission process is not influenced.
Description
Technical Field
The invention relates to the field of low-temperature geothermal energy, in particular to a low-temperature geothermal energy multipurpose wellhead device.
Background
A geothermal well refers to a method and a device for generating electricity by using geothermal energy with the well depth of about 3500 meters or hot spring water with the water temperature of more than 30 ℃, and the geothermal energy is divided into three types of high temperature, medium temperature and low temperature. The temperature is higher than 150 ℃, exists in a steam form, and belongs to high-temperature geothermal energy; 90-150 ℃, exists in the form of a mixture of water and steam, and belongs to medium-temperature geothermal energy; higher than 25 ℃ and lower than 90 ℃, and exists in the forms of warm water, warm hot water, hot water and the like, and belongs to low-temperature geothermal energy.
The general low-temperature ground energy is directly extracted from the ground, but because of environmental reasons, a certain amount of sand exists in water, the sand can be attached to the inside of a pipeline for a long time, and the inside of the device can be blocked by simply utilizing a filtering device, so that the working process is influenced.
Disclosure of Invention
The invention aims to solve the problems and provide a low-temperature geothermal multipurpose wellhead device.
The invention realizes the purpose through the following technical scheme:
the utility model provides a multi-purpose wellhead assembly of low temperature geothermol power, is including being used for connecting the orificial oil pipe head of oil pipe and being used for filtering the filtering mechanism of impurity and being used for controlling the reposition of redundant personnel mechanism, washing control mechanism of flow direction, two the filtering mechanism feed end is connected reposition of redundant personnel mechanism, reposition of redundant personnel mechanism with be provided with between the filtering mechanism washing control mechanism, the reposition of redundant personnel mechanism feed end is connected with the outer extension mechanism that is used for the extension, outer extension mechanism feed end is provided with the oil pipe head.
Preferably: the cleaning control mechanism comprises a cleaning pipe and a pressure electromagnetic valve, the cleaning pipe is connected with the shunt mechanism through threads, the first water inlet pipe, the second water inlet pipe and the filter cylinder of the filter mechanism are connected through threads, and the pressure electromagnetic valve is arranged in the middle of the cleaning pipe.
According to the arrangement, when one filter element is fully loaded during filtering, and the second filtering mechanism is switched to use, the pressure electromagnetic valve is connected to the first sealing cap to be opened, and the first water inlet control valve is closed, so that the filter element in the first filter cylinder is flushed.
Preferably: the cleaning control mechanism comprises a cleaning pipe and a cleaning control valve, the cleaning pipe is connected with the shunt mechanism and the filtering mechanism through threads, and the cleaning control valve is arranged in the middle of the cleaning pipe.
According to the arrangement, when one filter element is fully loaded during filtering, and the second filtering mechanism is switched to use, the first sealing cap is connected with the cleaning control valve to open, and the first water inlet control valve is closed, so that the filter element in the first filter cylinder is flushed.
Preferably: the outer expanding mechanism comprises a first four-way joint, a main valve, a second four-way joint and a throttle valve, wherein the first four-way joint is connected with the oil pipe head through a flange, the first four-way joint is connected with the main valve through a flange, the upper end of the main valve is connected with the second four-way joint through a flange, one end of the second four-way joint is connected with the throttle valve through a flange, and the throttle valve is connected with the shunting mechanism through a flange.
According to the arrangement, the main valve plays a role in controlling on-off, and the first four-way valve and the second four-way valve play a role in externally connecting other pipelines.
Preferably: shunt mechanism includes first inlet tube, shunt tubes, second inlet tube, water control valve, the welding of first inlet tube one end has the shunt tubes, the welding of shunt tubes outlet end has the second inlet tube, first inlet tube with all there is water control valve through flange joint on the second inlet tube, there is the shunt valves through flange joint on the shunt tubes, first inlet tube second inlet tube outlet end all is through welded connection filtering mechanism.
So set up, the shunt tubes play the reposition of redundant personnel effect, water inlet control valve the shunt valve plays the control break-make effect.
Preferably: the filter mechanism comprises a filter cartridge, a sealing cap, a blow-off pipe and a blow-off valve, wherein the water inlet end of the filter cartridge is connected with the shunting mechanism, the upper end of the filter cartridge is connected with the sealing cap, the sealing cap is connected with the filter element relative to the inside of the filter cartridge, the lower end of the filter cartridge is connected with the blow-off pipe, the blow-off valve is arranged on the blow-off pipe, the water outlet end of the filter cartridge is provided with a water outlet pipe, and the water outlet pipe.
So set up, low temperature geothermal water passes through first inlet tube or the second inlet tube enters into the cartridge filter inboard, process after the filtration of filter core, preliminary pure water passes through the outlet pipe is discharged, and is right as required during the filter core washs, closes water inlet control valve opens wash control mechanism makes rivers follow wash down on the filter core, open simultaneously blowdown valve to wash.
Preferably: the outlet pipe the blow off pipe passes through welded connection the cartridge filter, sealing cap passes through threaded connection the cartridge filter, the filter core passes through the clamp connection sealing cap.
So set up, guaranteed to connect the leakproofness through welding and threaded connection.
Preferably: the first water inlet pipe, the shunt tubes and the second water inlet pipe are all made of cast iron.
So set up, utilize cast iron can support the flexible volume of low temperature geothermol power at the transmission process and the process of stopping.
Compared with the prior art, the invention has the following beneficial effects:
1. the low-temperature geothermal energy can be quickly filtered and transmitted by using the filtering mechanism, and the water flow rate is detected in a test manner, so that the transmission efficiency is ensured;
2. utilize reposition of redundant personnel mechanism, filter mechanism, washing control mechanism cooperation, can wash fast when one end filter mechanism takes place to block up to utilize another filter mechanism to transmit, can not influence transmission process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a low temperature geothermal multipurpose wellhead assembly according to the present invention;
FIG. 2 is a schematic structural diagram of a flow diversion mechanism of a low temperature geothermal multipurpose wellhead assembly according to the present invention;
FIG. 3 is a schematic diagram of the internal structure of a filter mechanism of a low temperature geothermal multipurpose wellhead assembly according to the present invention;
FIG. 4 is a schematic structural diagram of a pressure solenoid valve of the low-temperature geothermal multipurpose wellhead assembly;
fig. 5 is a schematic diagram of a purge control valve for a low temperature geothermal multi-purpose wellhead assembly according to the present invention.
The reference numerals are explained below:
1. a tubing head; 2. an outer expanding mechanism; 3. a flow dividing mechanism; 4. a filtering mechanism; 5. a cleaning control mechanism; 21. a first cross; 22. a main valve; 23. a second cross; 24. a throttle valve; 31. a first water inlet pipe; 32. a shunt tube; 33. a second water inlet pipe; 34. a water inlet control valve; 35. a flow divider valve; 41. a filter cartridge; 42. a sealing cap; 43. a blow-off pipe; 44. a blowdown valve; 45. a filter element; 46. a water outlet pipe; 47. a flow valve; 51. cleaning the tube; 52. a pressure solenoid valve; 511. and cleaning the control valve.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention will be further described with reference to the accompanying drawings in which:
the utility model provides a multi-purpose wellhead assembly of low temperature geothermol power, is including being used for connecting the orificial oil pipe head 1 of oil pipe and being used for filtering the filter mechanism 4 of impurity and being used for controlling the reposition of redundant personnel mechanism 3 of flow direction, washing control mechanism 5, and reposition of redundant personnel mechanism 3 is connected to two filter mechanism 4 feed ends, is provided with washing control mechanism 5 between reposition of redundant personnel mechanism 3 and the filter mechanism 4, and 3 feed ends of reposition of redundant personnel mechanism are connected with the outer extension mechanism 2 that is used for the extension, and the outer extension mechanism 2 feed ends are provided with oil pipe head.
Example 1
As shown in fig. 1-4, the cleaning control mechanism 5 includes a cleaning pipe 51 and a pressure solenoid valve 52, the cleaning pipe 51 is connected with the first water inlet pipe 31 and the second water inlet pipe 33 of the flow dividing mechanism 3 and the filter cartridge 41 of the filter mechanism 4 through threads, the pressure solenoid valve 52 is arranged in the middle of the cleaning pipe 51, when one filter cartridge 45 is fully filtered and the second filter mechanism 4 is switched to be used, the pressure solenoid valve 52 connected to the first sealing cap 42 is opened, and the first water inlet control valve 34 is closed, so as to flush the filter cartridge 45 in the first filter cartridge 41; the outer expanding mechanism 2 comprises a first four-way 21, a main valve 22, a second four-way 23 and a throttle valve 24, wherein the first four-way 21 is connected with the oil pipe head 1 through a flange, the first four-way 21 is connected with the main valve 22 through a flange, the upper end of the main valve 22 is connected with the second four-way 23 through a flange, one end of the second four-way 23 is connected with the throttle valve 24 through a flange, the throttle valve 24 is connected with the flow dividing mechanism 3 through a flange, the main valve 22 plays a role in controlling on-off, and the first four-way 21 and the second four-way 23 play a role; the flow dividing mechanism 3 comprises a first water inlet pipe 31, flow dividing pipes 32, a second water inlet pipe 33 and a water inlet control valve 34, wherein the flow dividing pipes 32 are welded at one end of the first water inlet pipe 31, the second water inlet pipe 33 is welded at the water outlet end of the flow dividing pipes 32, the first water inlet pipe 31 and the second water inlet pipe 33 are both connected with the water inlet control valve 34 through flanges, the flow dividing pipes 32 are connected with flow dividing valves 35 through flanges, the water outlet ends of the first water inlet pipe 31 and the second water inlet pipe 33 are both connected with the filtering mechanism 4 through welding, the flow dividing pipes 32 play a flow dividing role, and the water inlet control valve 34 and; the filtering mechanism 4 comprises a filter cartridge 41, a sealing cap 42, a sewage discharge pipe 43 and a sewage discharge valve 44, wherein the water inlet end of the filter cartridge 41 is connected with the shunting mechanism 3, the upper end of the filter cartridge 41 is connected with the sealing cap 42, the sealing cap 42 is connected with a filter element 45 relative to the inside of the filter cartridge 41, the lower end of the filter cartridge 41 is connected with the sewage discharge pipe 43, the sewage discharge pipe 43 is provided with the sewage discharge valve 44, the water outlet end of the filter cartridge 41 is provided with a water outlet pipe 46, the water outlet pipe 46 is provided with a flow valve 47, low-temperature geothermal water enters the inner side of the filter cartridge 41 through the first water inlet pipe 31 or the second water inlet pipe 33, after being filtered by the filter element 45, primarily pure water is discharged through the water outlet pipe 46, when the filter element 45 needs to be cleaned, the water inlet; the water outlet pipe 46 and the sewage discharge pipe 43 are connected with the filter cylinder 41 through welding, the sealing cap 42 is connected with the filter cylinder 41 through threads, the filter core 45 is connected with the sealing cap 42 through a hoop, and the connection sealing performance is ensured through welding and threaded connection; the first water inlet pipe 31, the shunt pipe 32 and the second water inlet pipe 33 are all made of cast iron, and the cast iron can support the expansion amount of low-temperature terrestrial heat in the transmission process and the stopping process.
Example 2
This example differs from example 1 in that:
as shown in fig. 5, the cleaning control mechanism 5 includes a cleaning pipe 51, a cleaning control valve 511, the cleaning pipe 51 is connected with the flow dividing mechanism 3 and the filtering mechanism 4 by screw threads, and the cleaning control valve 511 is disposed in the middle of the cleaning pipe 51. When one of the filter elements 45 is fully loaded during filtration and the second filter mechanism 4 is switched to be used, the first sealing cap 42 is connected with the cleaning control valve 511 to be opened, and the first water inlet control valve 34 is closed, so that the filter element 45 in the first filter cylinder 41 is washed.
The working principle is as follows: low-temperature terrestrial heat enters the first filter cylinder 41 through the oil pipe head 1 and the outer expanding mechanism 2 through the first water inlet pipe 31 of the flow dividing mechanism 3, after being filtered by the filter element 45, primarily pure water is discharged through the water outlet pipe 46, when the filter element 45 needs to be cleaned, the second filter mechanism 4 is switched to be used, the first sealing cap 42 is connected with the pressure electromagnetic valve 52 or the cleaning control valve 511 to be opened, meanwhile, the first water inlet control valve 34 is closed, so that the filter element 45 in the first filter cylinder 41 is washed, and the second water inlet control valve 34 and the flow dividing valve 35 are opened, so that the second filter cylinder 41 and the filter element 45 are utilized for filtration and transmission.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (8)
1. A low temperature geothermy multipurpose wellhead device which characterized in that: including being used for connecting the orificial oil pipe head of oil pipe (1) and being used for filtering mechanism (4) of impurity and being used for controlling reposition of redundant personnel mechanism (3), the washing control mechanism (5) of flow direction, two filtering mechanism (4) feed end is connected reposition of redundant personnel mechanism (3), reposition of redundant personnel mechanism (3) with be provided with between filtering mechanism (4) washing control mechanism (5), reposition of redundant personnel mechanism (3) feed end is connected with and is used for the outer extension mechanism (2) of extension, outer extension mechanism (2) feed end is provided with oil pipe head (1).
2. A low temperature geothermal multipurpose wellhead as claimed in claim 1 in which: the cleaning control mechanism (5) comprises a cleaning pipe (51) and a pressure electromagnetic valve (52), the cleaning pipe (51) is connected with the shunt mechanism (3) and the filtering mechanism (4) through threads, and the pressure electromagnetic valve (52) is arranged in the middle of the cleaning pipe (51).
3. A low temperature geothermal multipurpose wellhead as claimed in claim 1 in which: wash control mechanism (5) including scavenge pipe (51), washing control valve (511), scavenge pipe (51) are through threaded connection reposition of redundant personnel mechanism (3) with filtering mechanism (4), washing control valve (511) set up scavenge pipe (51) middle part.
4. A low temperature geothermal multipurpose wellhead as claimed in claim 1 in which: outer expanding mechanism (2) include first cross (21), main valve (22), second cross (23), choke valve (24), flange joint is passed through in first cross (21) oil pipe head (1), flange joint is passed through in first cross (21) main valve (22), flange joint is passed through to main valve (22) upper end second cross (23), flange joint is passed through to second cross (23) one end choke valve (24), choke valve (24) pass through flange joint reposition of redundant personnel mechanism (3).
5. A low temperature geothermal multipurpose wellhead as claimed in claim 1 in which: shunt mechanism (3) include first inlet tube (31), shunt tubes (32), second inlet tube (33), advance water control valve (34), first inlet tube (31) one end welding has shunt tubes (32), shunt tubes (32) water outlet end welding has second inlet tube (33), first inlet tube (31) with all there is through flange joint on second inlet tube (33) advance water control valve (34), there are shunt valves (35) through flange joint on shunt tubes (32), first inlet tube (31) second inlet tube (33) water outlet end all through welded connection filtering mechanism (4).
6. A low temperature geothermal multipurpose wellhead as claimed in claim 1 in which: filtering mechanism (4) are including cartridge filter (41), sealed cap (42), blow off pipe (43), blowdown valve (44), cartridge filter (41) are intake the end and are connected reposition of redundant personnel mechanism (3), cartridge filter (41) upper end is connected with sealed cap (42), sealed cap (42) for cartridge filter (41) internal connection has filter core (45), cartridge filter (41) lower extreme is connected with blow off pipe (43), be provided with on blow off pipe (43) blowdown valve (44), cartridge filter (41) outlet end is provided with outlet pipe (46), be provided with flow valve (47) on outlet pipe (46).
7. A low temperature geothermal multipurpose wellhead assembly according to claim 6 wherein: the water outlet pipe (46) and the sewage discharge pipe (43) are connected with the filter cartridge (41) through welding, the sealing cap (42) is connected with the filter cartridge (41) through threads, and the filter cartridge (45) is connected with the sealing cap (42) through a clamp.
8. A low temperature geothermal multipurpose wellhead assembly according to claim 5 wherein: the first water inlet pipe (31), the shunt pipe (32) and the second water inlet pipe (33) are all made of cast iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010621568.0A CN111810110A (en) | 2020-07-01 | 2020-07-01 | Low-temperature geothermal multipurpose wellhead device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010621568.0A CN111810110A (en) | 2020-07-01 | 2020-07-01 | Low-temperature geothermal multipurpose wellhead device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111810110A true CN111810110A (en) | 2020-10-23 |
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ID=72855674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010621568.0A Pending CN111810110A (en) | 2020-07-01 | 2020-07-01 | Low-temperature geothermal multipurpose wellhead device |
Country Status (1)
| Country | Link |
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| CN (1) | CN111810110A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115518435A (en) * | 2022-09-26 | 2022-12-27 | 合肥万豪能源设备有限责任公司 | Coal-bed gas exploitation coal dust prevention device |
| CN116905614A (en) * | 2023-06-13 | 2023-10-20 | 埃梯梯智慧水务科技有限公司 | Non-negative pressure laminated water supply and sewage treatment method and system based on photovoltaic power generation |
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| US20130126174A1 (en) * | 2011-11-23 | 2013-05-23 | Advanced Aqua Group | Water conversion system |
| CN103432810A (en) * | 2013-09-06 | 2013-12-11 | 上海滤威过滤***有限公司 | Backwashing filter |
| CN204476673U (en) * | 2015-01-15 | 2015-07-15 | 张祁 | Salt deposit molten chamber system for geothermal production of electricity |
| CN205031972U (en) * | 2015-08-25 | 2016-02-17 | 东莞安默琳机械制造技术有限公司 | Self -cleaning filter of back flush linkage |
| CN208591612U (en) * | 2018-05-28 | 2019-03-12 | 中国石油天然气股份有限公司 | Filter |
| CN110388203A (en) * | 2019-08-12 | 2019-10-29 | 北京探矿工程研究所 | High-temperature geothermal well water testing and well killing system and method |
| CN209742831U (en) * | 2019-04-11 | 2019-12-06 | 山东地矿新能源有限公司 | Wellhead assembly of gravity flow geothermal well |
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2020
- 2020-07-01 CN CN202010621568.0A patent/CN111810110A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130126174A1 (en) * | 2011-11-23 | 2013-05-23 | Advanced Aqua Group | Water conversion system |
| CN103432810A (en) * | 2013-09-06 | 2013-12-11 | 上海滤威过滤***有限公司 | Backwashing filter |
| CN204476673U (en) * | 2015-01-15 | 2015-07-15 | 张祁 | Salt deposit molten chamber system for geothermal production of electricity |
| CN205031972U (en) * | 2015-08-25 | 2016-02-17 | 东莞安默琳机械制造技术有限公司 | Self -cleaning filter of back flush linkage |
| CN208591612U (en) * | 2018-05-28 | 2019-03-12 | 中国石油天然气股份有限公司 | Filter |
| CN209742831U (en) * | 2019-04-11 | 2019-12-06 | 山东地矿新能源有限公司 | Wellhead assembly of gravity flow geothermal well |
| CN110388203A (en) * | 2019-08-12 | 2019-10-29 | 北京探矿工程研究所 | High-temperature geothermal well water testing and well killing system and method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115518435A (en) * | 2022-09-26 | 2022-12-27 | 合肥万豪能源设备有限责任公司 | Coal-bed gas exploitation coal dust prevention device |
| CN115518435B (en) * | 2022-09-26 | 2024-05-24 | 合肥万豪能源设备有限责任公司 | Coal-dust preventing device for coal bed gas exploitation |
| CN116905614A (en) * | 2023-06-13 | 2023-10-20 | 埃梯梯智慧水务科技有限公司 | Non-negative pressure laminated water supply and sewage treatment method and system based on photovoltaic power generation |
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Application publication date: 20201023 |
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| RJ01 | Rejection of invention patent application after publication |