CN108993000B - Quick filter replacement method for double-sleeve heat exchanger in geothermal well - Google Patents
Quick filter replacement method for double-sleeve heat exchanger in geothermal well Download PDFInfo
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- CN108993000B CN108993000B CN201811037802.4A CN201811037802A CN108993000B CN 108993000 B CN108993000 B CN 108993000B CN 201811037802 A CN201811037802 A CN 201811037802A CN 108993000 B CN108993000 B CN 108993000B
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- 238000000034 method Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 description 20
- 239000012530 fluid Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- 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
- B01D29/96—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters
Abstract
The invention discloses a quick replacement method of a filter of a double-sleeve heat exchanger used in a geothermal well, when a pipe body of a circulating water system is blocked, each second handle is pressed in turn, the second handle drives the movable plate to extrude the top end of the clamping block, so that the clamping block is elastically compressed and separated from the clamping groove, when the fixture block moves to a position of half of the sliding path range in the compression process, the fixture block is adsorbed by a matched magnet on the path, the fixture block is adsorbed and stagnated in a compressed posture, the slide block on which the fixture block is positioned can freely slide in the tube body, and finally an operator pulls the operating handle from the side until the filter is taken out from the tube body in a sliding manner, so that the double-sleeve heat exchanger convenient for dredging in the geothermal well is realized, the heat exchanger is more convenient to dredge in the using process, the labor intensity of workers is reduced, and the heat exchange effect of the heat exchanger is greatly improved.
Description
Technical Field
The invention relates to the technical field of heat exchangers, in particular to a double-sleeve heat exchanger used in a geothermal well and a method for quickly replacing an inner filter of the double-sleeve heat exchanger.
Background
The heat exchanger is a device for transferring partial heat of hot fluid to cold fluid, and is also called as a heat exchanger; the heat exchanger is an energy-saving device for transferring heat between materials between two or more fluids with different temperatures, and is used for transferring heat from the fluid with higher temperature to the fluid with lower temperature to make the temperature of the fluid reach the index specified by the process so as to meet the requirements of process conditions, and is also one of main devices for improving the utilization rate of energy.
In recent years, with the enhancement of environmental awareness and the needs of energy conservation and emission reduction and renewable energy development, the utilization of geothermal resources is gradually paid attention by people, while in the process of exploitation of geothermal energy, in order to avoid the waste of underground resources, a double-pipe heat exchanger is generally adopted to collect heat of the geothermal energy, the double-pipe heat exchanger is easy to block in the using process, and the heat exchanger is easy to block in the heat exchange process because the geothermal energy contains more impurities, so that the heat exchange effect of the heat exchanger is greatly influenced, and the maintenance cost of the heat exchanger is increased.
Disclosure of Invention
The invention aims to provide a double-sleeve heat exchanger used in a geothermal well, which has the advantage of facilitating dredging of the heat exchanger and solves the problem that the common double-sleeve heat exchanger is inconvenient to dredge.
To achieve the above object, the present invention provides the technical solution as set forth in claim 1: a double-sleeve heat exchanger used in a geothermal well comprises a heat exchanger body, wherein the top of the left side of the heat exchanger body is fixedly connected with an inlet pipe, the left side of the inlet pipe is fixedly connected with a first connecting flange through a first sealing gasket, the inner wall of the inlet pipe is movably connected with a filter which is matched with the inlet pipe for use, the top and the bottom of the filter are both fixedly connected with symmetrically arranged slide blocks, the top and the bottom of the inner wall of the inlet pipe are both provided with slide grooves, one sides of the two slide blocks which are positioned at the same side and close to the slide grooves penetrate through the slide grooves and extend into the slide grooves, one side of the slide blocks which is far away from the filter is provided with a limiting groove, one side of the inner wall of the limiting groove and one side of the inner wall which is close to the filter are fixedly connected with a limiting plate through a limiting spring, the utility model discloses a heat exchanger, including limiting groove, draw-in groove, ball, fly leaf, ball, connecting rod, heat exchanger body, the limiting plate is kept away from to the fixture block, one side that the limiting plate was kept away from to the fixture block runs through limiting groove and draw-in groove in proper order and extends to the inside of draw-in groove, one side that the limiting plate was kept away from to the fixture block is provided with the ball that the symmetry set up, swing joint has the fly leaf rather than the use of mutually supporting on the inner wall of draw-in groove, one side that the fly leaf is close to the ball rather than the contact with each other, one side fixedly connected with connecting rod that.
Preferably, the left side of the filter is fixedly connected with symmetrically arranged operating handles.
Preferably, the left and right sides of spacing inslot wall and the position that corresponds the limiting plate all offer rather than the fixed slot that uses of mutually supporting, one side that the limiting plate is close to the fixed slot runs through the fixed slot and extends to its inside.
Preferably, the surface of the connecting rod and the outside of the inlet pipe are movably connected with a sealing ring, and one side of the sealing ring close to the inlet pipe is fixedly connected with the sealing ring.
Preferably, one side of the connecting rod, which is far away from the movable plate, is fixedly connected with a pressing block, and two pressing blocks located on the same side are fixedly connected through a pressing plate.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the double-sleeve heat exchanger for the geothermal well, the double-sleeve heat exchanger convenient to dredge is realized through the mutual matching of the inlet pipe, the first sealing gasket, the first connecting flange, the filter, the sliding block, the sliding groove, the limiting spring, the limiting plate, the clamping block, the clamping groove, the ball, the movable plate and the connecting rod, the dredging of the heat exchanger is more convenient in the use process, the labor intensity of workers is reduced, and the heat exchange effect of the heat exchanger is greatly improved.
2. According to the invention, the operating handle is arranged, so that a worker can operate the filter more conveniently, the limiting groove is arranged to play a limiting role, the limiting plate is more stable when moving up and down and cannot be separated from the limiting groove, the sealing ring is arranged to play a sealing role, the connecting rod is prevented from leaking when moving up and down, and the pressing block and the pressing plate are arranged so that the worker can operate the connecting rod more conveniently when moving.
3. The filter can be loaded and unloaded reliably and quickly by a single person.
Drawings
FIG. 1 is a structural cross-sectional view in elevation of the present invention;
FIG. 2 is an enlarged view of a portion of A-A of FIG. 1 according to the present invention.
In the figure: the heat exchanger comprises a heat exchanger body 1, a heat inlet pipe 2, a first sealing gasket 3, a first connecting flange 4, a filter 5, a sliding block 6, a sliding groove 7, a limiting groove 8, a limiting spring 9, a limiting plate 10, a clamping block 11, a clamping groove 12, a ball 13, a movable plate 14, a connecting rod 15, a return pipe 16, a second sealing gasket 17, a second connecting flange 18, an operating handle 19, a fixed groove 20, a sealing ring 21, a pressing block 22 and a pressing plate 23.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment: referring to fig. 1-2, a double-pipe heat exchanger for use in a geothermal well comprises a heat exchanger body 1, a top of a left side of the heat exchanger body 1 is fixedly connected with an inlet pipe 2, a left side of the inlet pipe 2 is fixedly connected with a first connecting flange 4 through a first sealing gasket 3, an inner wall of the inlet pipe 2 is movably connected with a filter 5 which is used in cooperation with the inlet pipe, a left side of the filter 5 is fixedly connected with symmetrically arranged operating handles 19, the filter 5 is more convenient for a worker to operate the filter 5 by arranging the operating handles 19, the top and the bottom of the filter 5 are both fixedly connected with symmetrically arranged sliding blocks 6, the top and the bottom of the inner wall of the inlet pipe 2 are both provided with sliding grooves 7, one sides of the two sliding blocks 6 which are positioned at the same side and close to the sliding grooves 7 penetrate through the sliding grooves 7 and extend to the inside of the sliding blocks, one side of the sliding blocks 6 which is far away, the left side and the right side of the inner wall of the limiting groove 8 and the position corresponding to the limiting plate 10 are both provided with a fixed groove 20 mutually matched with the limiting groove, one side of the limiting plate 10 close to the fixed groove 20 penetrates through the fixed groove 20 and extends to the inside of the fixed groove, the limiting plate 10 plays a limiting role by arranging the fixed groove 20, so that the limiting plate 10 is more stable during up-and-down movement and cannot be separated from the limiting groove 8, one side of the limiting plate 10 far away from the limiting spring 9 is fixedly connected with a clamping block 11, the inner wall of the inlet pipe 2 and the positions corresponding to the four clamping blocks 11 are both provided with clamping grooves 12 mutually matched with the clamping groove, one side of the clamping block 11 far away from the limiting plate 10 sequentially penetrates through the limiting groove 8 and the clamping grooves 12 and extends to the inside of the clamping grooves 12, one side of the clamping block 11 far away from the limiting, a connecting rod 15 is fixedly connected to one side of the movable plate 14 far away from the balls 13, a sealing ring 21 is movably connected to the surface of the connecting rod 15 and located outside the inlet pipe 2, one side of the sealing ring 21 close to the inlet pipe 2 is fixedly connected with the connecting rod, a sealing effect is achieved by arranging the sealing ring 21, leakage of the connecting rod 15 during up-and-down movement is prevented, one side of the connecting rod 15 far away from the movable plate 14 sequentially penetrates through the clamping groove 12 and the inlet pipe 2 and extends to the outside of the inlet pipe 2, a pressing block 22 is fixedly connected to one side of the connecting rod 15 far away from the movable plate 14, two pressing blocks 22 located on the same side are fixedly connected through a pressing plate 23, a second connecting flange 18 is fixedly connected to the left side of the heat exchanger body 1 through a second sealing gasket 17 by arranging the pressing block 22 and the pressing plate 23, so that, through advancing pipe 2, first sealed 3 of filling up, first connecting flange 4, filter 5, slider 6, spout 7, spacing groove 8, spacing spring 9, limiting plate 10, fixture block 11, draw-in groove 12, ball 13, mutually supporting between fly leaf 14 and the connecting rod 15, realized using double-pipe heat exchanger in the geothermol power well convenient to mediation, make things convenient for the mediation of heat exchanger more in the use, not only reduced staff's intensity of labour, moreover great improvement the heat transfer effect of heat exchanger.
During the use, when the pipe 2 that advances of heat exchanger takes place to block up, only need press the briquetting 22 through pressing the clamp plate 23, thereby make it drive fly leaf 14 through connecting rod 15 and extrude fixture block 11, thereby make fixture block 11 break away from draw-in groove 12, meanwhile, take out filter 5 through operating handle 19, clear up or maintain it, after the clearance is accomplished put back filter 5 can, consequently can clear up the heat exchanger from the source, prevent that impurity from getting into inside heat exchanger body 1, avoid causing unnecessary trouble.
In summary, the following steps: this double-pipe heat exchanger for in geothermol power well through setting up into pipe 2, first sealed 3, first connecting flange 4, filter 5, slider 6, spout 7, spacing groove 8, spacing spring 9, limiting plate 10, fixture block 11, draw-in groove 12, ball 13, fly leaf 14 and connecting rod 15, has solved the problem that common double-pipe heat exchanger is not convenient for the mediation.
Second embodiment: a double-sleeve heat exchanger used in a geothermal well comprises a heat exchanger body 1, wherein the top of the left side of the heat exchanger body 1 is fixedly connected with an inlet pipe 2, the left side of the inlet pipe 2 is fixedly connected with a first connecting flange 4 through a first sealing gasket 3, the inner wall of the inlet pipe 2 is movably connected with a filter 5 which is matched with the inlet pipe 2 for use, the top and the bottom of the filter 5 are both fixedly connected with symmetrically arranged slide blocks 6, the top and the bottom of the inner wall of the inlet pipe 2 are both provided with slide grooves 7, one sides of the two slide blocks 6 which are positioned at the same side and close to the slide grooves 7 penetrate through the slide grooves 7 and extend into the slide blocks, one side of the slide blocks 6 which is far away from the filter 5 is provided with a limiting groove 8, one side of the inner wall of the limiting groove 8 and close to the filter 5 is fixedly connected with a limiting plate 10 through, a second magnet is correspondingly arranged on the two inner walls of the sliding block 6 on the sliding path corresponding to the limiting plate 10, and the magnets are arranged at the half position of the sliding path range of the limiting plate 10;
one side of the limiting plate 10, which is far away from the limiting spring 9, is fixedly connected with a clamping block 11, cylindrical clamping grooves 12 which are matched with the clamping block 11 are formed in the inner wall of the inlet pipe 2 and correspond to the positions of the four clamping blocks 11, one side of the clamping block 11, which is far away from the limiting plate 10, sequentially penetrates through the limiting groove 8 and the clamping groove 12 and extends into the clamping groove 12, symmetrically arranged balls 13 are arranged on one side of the clamping block 11, which is far away from the limiting plate 10, a circular movable plate 14 which is matched with the clamping groove 12 is movably connected to the inner wall of the clamping groove 12, one side of the movable plate 14, which is close to the balls 13, is contacted with the balls, two centrosymmetric magnetic blocks are embedded in the bottom surface, which is contacted with the balls 13, of the movable plate 14 in;
a connecting rod 15 is fixedly connected to one side of the movable plate 14, which is far away from the balls 13, one side of the connecting rod 15, which is far away from the movable plate 14, sequentially penetrates through the clamping groove 12 and the inlet pipe 2 and extends to the outside of the inlet pipe 2, a pressing block 22 is fixedly connected to one side of the connecting rod 15, which is far away from the movable plate 14, a second handle is connected to the pressing block 22, the connecting rod 15 and the movable plate 14 are driven by the handles to rotate within the clamping groove 12 by 90 degrees to the maximum, and the two handles on the two pressing blocks 22 located on the same side rotate by; the bottom of the left side of the heat exchanger body 1 is fixedly connected with a return pipe 16, and the left side of the return pipe 16 is fixedly connected with a second connecting flange 18 through a second sealing gasket 17;
the left side of the filter 5 is fixedly connected with a push-pull device which moves the filter leftwards and rightwards.
Further, the pushing and pulling device is a symmetrically arranged operating handle 19.
Further, the fixed slot 20 that uses rather than mutually supporting is all seted up in the left and right sides of spacing groove 8 inner wall and the position that corresponds limiting plate 10, limiting plate 10 runs through fixed slot 20 and extends to its inside near one side of fixed slot 20, is provided with on the inner wall of fixed slot 20 corresponding limiting plate 10 the second magnet.
Further, the surface of the connecting rod 15 and the outside of the inlet pipe 2 are movably connected with a sealing ring 21, and one side of the sealing ring 21 close to the inlet pipe 2 is fixedly connected with the inlet pipe.
Further, the magnetic blocks embedded flush on the bottom surface of the movable plate 14 are preferably fan-shaped.
Furthermore, a third magnet is arranged on the end part, far away from the pressing block, of each handle.
In the first embodiment, a single person cannot perform two operations of pulling out the upper and lower pressing plates 23 and the operating handle 19, and thus the single person cannot perform the pulling out of the slider 6 and the filter 5, the pressing plate 23 is modified into two independent second handles, and magnets are symmetrically arranged at the bottom of the movable plate 14 and correspondingly arranged on the sliding path of the limiting plate 10, so that the single person can perform the complete attaching and detaching operation. The specific working process of the double-tube heat exchanger in this embodiment is as follows:
when in use, when the inlet pipe 2 of the heat exchanger is blocked, only by pressing each second handle in sequence, the second handle plate presses the pressing block 22, so that it drives the movable plate 14 to press the latch 11 through the connecting rod 15, so that the fixture block 11 is separated from the clamping groove 12, the limiting plate 10 on the fixture block slides downwards, and when the limiting plate 10 is at a half position of the range of the sliding path, that is, when the normal depth of the fixed groove 20 is reached, the first magnets on both sides of the stopper plate 10 are attracted by the second magnets in the fixed groove 20, and at this time, the stopper plate 10 and the latch 11 located therein are attracted and stay in the fixed groove 20, therefore, the four latch blocks 11 are separated from the latch grooves 12 and automatically attracted in the fixing grooves 20 and the sliding grooves 7, and at this time, the operator only has to pull the operating handle 19 from the left to remove the slide 6 with the filter 5 inside from the chute 7.
When the filter 5 is required to be installed, both ends of the stopper plates 10 in the four sliders are first attracted to the second magnets of the fixing grooves 20, then the filter 5 and the slide block 6 are pushed into the innermost end of the slide groove 7 along the slide groove 7, at the moment, the ball 13 on the clamping block 11 is positioned right below the clamping groove 12, then the two second handles at the same side are rotated 90 degrees oppositely, at the moment, the two second handles are in a straight shape, two centrosymmetric magnets at the bottom surface of the movable plate 14 below each second handle are simultaneously attached and attracted with the two balls, at the moment, the second handles are pulled upwards, the resultant force of the attraction force between the movable plate 14 and the balls and the elastic force of the position limiting spring 9 is greater than the attraction force between the first magnet and the second magnet in the position limiting plate 10, thereby pulling the latch 11 into the catch 12 and completing the snap-in installation of the four sliders and the filter 5 therein.
The third embodiment: the quick replacement method of the filter of the double-sleeve heat exchanger used in the geothermal well comprises a heat exchanger body, wherein the side edge of the heat exchanger body is fixedly connected with an inlet pipe and a return pipe which form a circulating water heat exchange system in sequence, one filter is movably clamped in the inner wall of one of the inlet pipe or the return pipe to filter circulating water, the filter can slide back and forth in a pipe body through a plurality of sliding blocks arranged on the upper side and the lower side of the outer contour of the filter, the sliding is carried out through a push-pull handle on the side edge of the outer contour of the manual push-pull filter, which is far away from the heat exchanger body, and clamping grooves which penetrate through the pipe wall and are the same as the sliding blocks in number are symmetrically; and a second handle capable of sliding up and down is arranged in each clamping groove. Each sliding block is clamped into the clamping groove or separated from the clamping groove through an elastically telescopic clamping block on the sliding block, the second handle moves up and down in the clamping groove to drive the movable plate to synchronously slide up and down, two first magnets which are centrosymmetric are arranged at the bottom of the movable plate, two balls are arranged at the top end of the clamping block facing the clamping groove, and magnets which are matched with each other correspondingly are arranged in the clamping block body and on an elastically telescopic path of the clamping block body;
when the body of circulating water system takes place to block up, press down every second handle in proper order, this second handle drives the fly leaf and extrudees the top of fixture block, thereby make fixture block elastic compression and break away from the draw-in groove, when moving to the half position of its slip path range in fixture block compression process, adsorbed by supporting magnet on the route, the fixture block is adsorbed the static stagnation with the gesture of compression this moment, the slider at fixture block place can freely slide in the body this moment, the operator at last is followed the avris and is pulled the handle, slide and take out until with the filter from the body.
When the filter is cleaned and the filter needs to be installed again, all the clamping blocks are kept to be adsorbed on the magnets in the telescopic paths, then the filter and the sliding blocks are pushed into the tube body and are pushed into the innermost end of the tube body in a sliding mode along the inner channel of the tube body through the pushing handle, the ball at the top end of each clamping block is right opposite to the clamping groove in the tube body, then the second handle is sequentially rotated by a proper angle to enable the two magnets and the two balls in central symmetry on the bottom surface of the movable plate below the second handle to be attached tightly and attracted, the second handle is sequentially pulled upwards at the moment, the clamping blocks are pulled into the clamping grooves again through the attraction force between the movable plate and the balls, the clamping blocks on the four sliding blocks are clamped and installed in place, and installation is completed.
The implementation of the device in the first and second embodiments is not limited in this embodiment as is known to the person skilled in the art.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. A quick replacement method of a filter of a double-sleeve heat exchanger used in a geothermal well, the double-sleeve heat exchanger comprises a heat exchanger body, the side height of the heat exchanger body is fixedly connected with an inlet pipe and a return pipe which form a circulating water heat exchange system in sequence, and the quick replacement method is characterized in that: a filter is movably clamped in the inner wall of one of the inlet pipe or the return pipe to filter circulating water, the filter slides back and forth in the pipe body through a plurality of sliding blocks arranged on the upper side and the lower side of the outer contour, the sliding is carried out through a push-pull handle on the side edge, far away from the heat exchanger body, of the outer contour of the manual push-pull filter, and clamping grooves which penetrate through the pipe wall and are the same as the sliding blocks in number are symmetrically arranged on the upper portion and the lower portion of the pipe body; a second handle capable of sliding up and down is arranged in each clamping groove, a fixed groove is formed in one side of each sliding block, the clamping blocks are elastically and telescopically arranged in the fixed grooves, each sliding block is clamped in the clamping groove through the clamping block capable of elastically and telescopically arranged on the sliding block, the second handle moves up and down in the clamping groove to drive the movable plate to synchronously slide up and down, two first magnets which are centrosymmetric are arranged at the bottom of the movable plate, two balls are arranged at the top ends, facing the clamping grooves, of the clamping blocks, and matched magnets are correspondingly arranged on the outer side walls of the clamping blocks and the inner walls of the fixed grooves;
when a pipe body of the circulating water system is blocked, sequentially pressing each second handle, wherein the second handles drive the movable plate to extrude the top end of the fixture block, so that the fixture block is elastically compressed and separated from the clamping groove, when the fixture block moves to a position of a half range of a sliding path in the compression process of the fixture block, the fixture block is adsorbed by a matched magnet on the path, the fixture block is adsorbed and statically stagnated in a compressed state, a sliding block where the fixture block is located can freely slide in the pipe body, and finally an operator pulls the operating handle from the side until the filter is taken out from the pipe body in a sliding manner;
when the filter is cleaned and the filter needs to be installed again, all the clamping blocks are kept to be adsorbed on the magnets in the telescopic paths, then the filter and the sliding blocks are pushed into the tube body and are pushed into the innermost end of the tube body in a sliding mode along the inner channel of the tube body through the pushing handle, the ball at the top end of each clamping block is right opposite to the clamping groove in the tube body, then the second handle is sequentially rotated by a proper angle to enable the two magnets and the two balls in central symmetry on the bottom surface of the movable plate below the second handle to be attached tightly and attracted, the second handle is sequentially pulled upwards at the moment, the clamping blocks are pulled into the clamping grooves again through the attraction force between the movable plate and the balls, the clamping blocks on the four sliding blocks are clamped and installed in place, and installation is completed.
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| CN201811037802.4A CN108993000B (en) | 2018-09-06 | 2018-09-06 | Quick filter replacement method for double-sleeve heat exchanger in geothermal well |
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| CN201811037802.4A CN108993000B (en) | 2018-09-06 | 2018-09-06 | Quick filter replacement method for double-sleeve heat exchanger in geothermal well |
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| CN108993000B true CN108993000B (en) | 2021-07-13 |
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| CN112283055A (en) * | 2020-11-12 | 2021-01-29 | 王润枝 | Utilize geothermal energy electricity generation's power generation facility that has anti-clogging function |
| CN112340868A (en) * | 2020-11-24 | 2021-02-09 | 贵州师范学院 | Industrial sewage treatment and purification equipment |
| CN113543546B (en) * | 2021-07-01 | 2023-06-09 | 深圳供电局有限公司 | ARM architecture-based distributed data collaboration device |
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| GB191410544A (en) * | 1914-04-29 | 1915-01-14 | Charles Adolphus Wootton | An Improved Fastener for Attachment to Window Sashes, French Windows, Doors, and the like. |
| GB580819A (en) * | 1944-03-28 | 1946-09-20 | Tecalemit Ltd | Improvements in oil or liquid filters |
| EP1437166A1 (en) * | 2003-01-09 | 2004-07-14 | NTZ Nederland BV | Mainstream replacement filter and method |
| CN206863904U (en) * | 2017-07-14 | 2018-01-09 | 上海丽界智能科技有限公司 | Node coordinated type intelligent fire-alarm disposal plant |
| CN207112253U (en) * | 2017-07-25 | 2018-03-16 | 梁声辉 | A kind of pedestal of computer based information visualization device |
| CN207327605U (en) * | 2017-09-13 | 2018-05-08 | 深圳市启航创客教育有限公司 | A kind of colour mixture 3D printer |
| CN207513047U (en) * | 2017-10-01 | 2018-06-19 | 熊艳 | A kind of seepage-proof structure for architectural engineering |
| CN108019576A (en) * | 2017-11-27 | 2018-05-11 | 广西梧州市金广丰化肥有限公司 | A kind of agricultural water conservancy project water pipeline being easily installed |
| CN108019664A (en) * | 2017-12-01 | 2018-05-11 | 黄久兰 | A kind of LED light for being conveniently replaceable light bulb |
| CN107738505A (en) * | 2017-12-12 | 2018-02-27 | 陕西专壹知识产权运营有限公司 | A kind of printing machine with printing plate manipulation device |
| CN108114376A (en) * | 2018-02-08 | 2018-06-05 | 青岛市黄岛区中医医院 | A kind of gynemetrics's pulse microwave therapeutic device |
| CN108418341A (en) * | 2018-03-30 | 2018-08-17 | 吴彦均 | A kind of driving motor for electric automobile |
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| CN108993000A (en) | 2018-12-14 |
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Effective date of registration: 20210623 Address after: 226300 group 1, Hongxi village, Jinsha street, Tongzhou District, Nantong City, Jiangsu Province Applicant after: NANTONG TUOFAN HEAT EXCHANGE DEVICE Co.,Ltd. Address before: No.66, Jingwu Road, Jinshui District, Zhengzhou City, Henan Province, 450000 Applicant before: Li Peng |
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