CN205858352U - A kind of energy-conservation quick mine frozen structure that flows automatically - Google Patents
A kind of energy-conservation quick mine frozen structure that flows automatically Download PDFInfo
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- CN205858352U CN205858352U CN201620480609.8U CN201620480609U CN205858352U CN 205858352 U CN205858352 U CN 205858352U CN 201620480609 U CN201620480609 U CN 201620480609U CN 205858352 U CN205858352 U CN 205858352U
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Abstract
This utility model relates to mine freezing field, particularly relates to a kind of energy-conservation quick mine frozen structure that flows automatically.With carbon dioxide as refrigerating medium, carbon dioxide heat exchange is latent heat heat exchange, and carbon dioxide recycle is with underground heat as power, and liquid CO 2 absorption heat becomes gas and rises to main pipeline, then liquefies to heat exchanger, is not required to external impetus all the time；Carbon dioxide heat exchange starts with liquid level, along with the increase of the liquid level degree of depth, pressure strengthens, and evaporating temperature improves, temperature is also improving, carbon dioxide freezes to share supervisor and main, main pipeline slope aspect down-pipe for partial freezing, carbon dioxide and liquid, liquid carbon dioxide is so made to rely on gravity to flow to down-pipe, and gaseous carbon dioxide flows at eminence heat exchanger, at heat exchanger, carbon dioxide is liquefied, form vacuum.Carbon dioxide freezes as partial freezing, and energy-saving effect is obvious.
Description
Technical field
This utility model relates to mine freezing field, particularly relates to a kind of energy-conservation quick mine frozen structure that flows automatically.
Background technology
Traditional mine freezes to use brine system circulation, and saline is refrigerating medium；Saline heat exchange is sensible heat transfer, efficiency
Low；Brine recycling needs brine pump to be power；Saline heat exchange temperature in whole arm is essentially identical, and borehole wall entirety is frozen simultaneously
Knot, energy consumption is high, and speed is slow.
Utility model content
The purpose of utility model: in order to provide a kind of effect preferably a kind of flow automatically energy-conservation quick mine frozen structure and
Freezing method, specific purposes are shown in the multiple substantial technological effects being embodied as part.
In order to reach as above purpose, this utility model adopts the following technical scheme that:
Scheme one:
A kind of energy-conservation quick mine frozen structure that flows automatically, it is characterised in that comprise main pipeline, main pipeline stretches out multiple
The embedment pipe that energy is located underground, also comprises the down-pipe that connect internal with main pipeline, and down-pipe stretches into the height of main pipeline and is less than
The height of embedment pipe, described down-pipe stretches out interior siphunculus, and interior siphunculus stretches in embedment pipe, described interior siphunculus portion in embedment pipe
Subpackage contains multiple holes, and main pipeline is connected to liquid carbon dioxide and provides structure.
The further technical scheme of this utility model is, described main pipeline stretches out multiple embedment pipe, described embedment pipe down
Circumferentially it is distributed.
The further technical scheme of this utility model is, described main pipeline is connected to shunting part, and described distributary division is divided into
Platy structure, it stretches out multiple embedment pipe down.
The further technical scheme of this utility model is, the material of described main pipeline and/or shunting part is adiabatic material；
Electromagnetic valve is comprised on described down-pipe.
The further technical scheme of this utility model is, the plurality of hole is inclined hole.
The further technical scheme of this utility model is, described inclined hole is around the distribution in a week of interior siphunculus.
The further technical scheme of this utility model is, described interior siphunculus comprises electromagnetic valve.
The further technical scheme of this utility model is, multiple pressure transducer and/or temperature is distributed in described interior siphunculus
Degree sensor.
Scheme two:
A kind of method that energy-conservation quick mine that flows automatically freezes, it is characterised in that
With carbon dioxide as refrigerating medium, carbon dioxide heat exchange is latent heat heat exchange, carbon dioxide recycle with underground heat as power, liquid
Body carbon dioxide absorption heat becomes gas and rises to main pipeline, then liquefies to heat exchanger, is not required to external impetus all the time；Titanium dioxide
Carbon heat exchange starts with liquid level, and along with the increase of the liquid level degree of depth, pressure strengthens, and evaporating temperature improves, and temperature is also improving, titanium dioxide
Carbon freezes to share supervisor and main, main pipeline slope aspect down-pipe for partial freezing, carbon dioxide and liquid, so makes liquid
Carbon dioxide relies on gravity to flow to down-pipe, and gaseous carbon dioxide flows at eminence heat exchanger, carbon dioxide at heat exchanger
Gas liquefaction, forms vacuum.
The further technical scheme of this utility model is, during carrying out freezing partly, ensures one in main pipeline
Fixed liquid level, at any time through liquid down-pipe electromagnetic valve liquid make-up carbon dioxide in down-pipe, the return duct mouth of pipe is positioned at two
Above carbonoxide liquid level, in case liquid flows into return duct in main pipeline；There is inclined hole on liquid down-pipe tube wall, both got rid of liquid and existed
Flash gas in interior siphunculus, can make again liquid short-circuit cycle near liquid level.
Use this utility model of as above technical scheme, have the advantages that relative to prior art: traditional mine
Freezing to use brine system circulation, saline is refrigerating medium；This technology uses carbon dioxide to replace traditional brine system, titanium dioxide
Carbon is refrigerating medium.
Saline heat exchange is sensible heat transfer, and efficiency is low；Carbon dioxide heat exchange is latent heat heat exchange, and heat exchange efficiency is greatly improved.
Brine recycling needs brine pump to be power；Carbon dioxide recycle is with underground heat as power, and liquid CO 2 absorbs heat
Quantitative change is that gas rises to supervisor, then liquefies to heat exchanger, is not required to external impetus all the time.
Saline heat exchange temperature in whole arm is essentially identical, and borehole wall entirety is freezed simultaneously；Carbon dioxide heat exchange is with liquid level
Starting, along with the increase of the liquid level degree of depth, pressure strengthens, and evaporating temperature improves, and temperature is also improving.It is computed, regulates at liquid level
During for-30 DEG C, at lower 60 meters of liquid level, it is-20 DEG C.So carbon dioxide freezes as partial freezing, energy-saving effect is obvious.
Accompanying drawing explanation
In order to further illustrate this utility model, it is further illustrated below in conjunction with the accompanying drawings:
Fig. 1 is utility model structural representation；
Wherein: 1. main pipeline；2. return duct；3. shunting part；4. embedment pipe；5. electromagnetic valve；6. siphunculus in；7. opening；
8. down-pipe；91. sensors one；92. sensors two；93. sensors three；94. sensors four.
Detailed description of the invention
Illustrating embodiment of the present utility model below in conjunction with the accompanying drawings, embodiment is not constituted limit of the present utility model
System:
Scheme one:
A kind of energy-conservation quick mine frozen structure that flows automatically, it is characterised in that comprise main pipeline 1, main pipeline 1 stretches out many
The embedment pipe 4 that individual energy is located underground, also comprises the down-pipe 8 that connect internal with main pipeline 1, and down-pipe 8 stretches into the height of main pipeline
Degree is less than the height of embedment pipe 4, and described down-pipe 8 stretches out interior siphunculus 6, and interior siphunculus 6 stretches in embedment pipe 4, and described interior siphunculus 6 exists
Part in embedment pipe 4 comprises multiple hole, and main pipeline is connected to liquid carbon dioxide and provides structure, and liquid carbon dioxide provides knot
Structure is heat exchanger.Technique effect and the process that realizes thereof of the essence that the technical scheme at this place is played are as follows: with carbon dioxide
For refrigerating medium, carbon dioxide heat exchange is latent heat heat exchange, and carbon dioxide recycle is with underground heat as power, and liquid CO 2 absorbs heat
Become gas and rise to main pipeline, then liquefy to heat exchanger, be not required to external impetus all the time；Carbon dioxide heat exchange starts with liquid level,
Along with the increase of the liquid level degree of depth, pressure strengthens, and evaporating temperature improves, and temperature is also improving, and carbon dioxide freezes as partial freezing,
Carbon dioxide and liquid share supervisor and main, main pipeline slope aspect down-pipe, so make liquid carbon dioxide rely on gravity
Flow to down-pipe, and gaseous carbon dioxide flows at eminence heat exchanger, at heat exchanger, carbon dioxide is liquefied, form vacuum
Degree.
More specifically contrast is:
1, traditional mine freezes to use brine system circulation, and saline is refrigerating medium；This technology uses carbon dioxide to replace
Traditional brine system, carbon dioxide is refrigerating medium.
2, saline heat exchange is sensible heat transfer, and efficiency is low；Carbon dioxide heat exchange is latent heat heat exchange, and heat exchange efficiency is greatly improved.
3, brine recycling needs brine pump to be power；Carbon dioxide recycle is with underground heat as power, and liquid CO 2 absorbs
Heat becomes gas and rises to supervisor, then liquefies to heat exchanger, is not required to external impetus all the time.
4, saline heat exchange temperature in whole arm is essentially identical, and borehole wall entirety is freezed simultaneously；Carbon dioxide heat exchange is with liquid
Face starts, and along with the increase of the liquid level degree of depth, pressure strengthens, and evaporating temperature improves, and temperature is also improving.It is computed, adjusts at liquid level
When joint is for-30 DEG C, at lower 60 meters of liquid level, it is-20 DEG C.So carbon dioxide freezes as partial freezing, energy-saving effect is obvious.
Further improvement project is: described main pipeline 1 stretches out multiple embedment pipe 4 down, and described embedment pipe 4 circumferentially divides
Cloth.Technique effect and the process that realizes thereof of the essence that the technical scheme at this place is played are as follows: be circumferentially distributed as most preferably
A kind of distribution mode, the mine at center can effectively be fenced up and carries out freezing, it is ensured that around all form freeze wall.
Described main pipeline 1 is connected to shunting part, and described distributary division is divided into platy structure, and it stretches out multiple embedment down
Pipe 4.Technique effect and the process that realizes thereof of the essence that the technical scheme at this place is played are as follows: this place is a kind of realization side
Formula, platy structure can arrange down as top board, and platy structure center is empty structure, therefore can conduct liquid.
The material of described main pipeline 1 and/or shunting part is adiabatic material；Electromagnetic valve is comprised on described down-pipe 8.This place
The technique effect of essence that played of technical scheme and the process that realizes be as follows: heat insulating material mass-energy is to preventing outside heat pair
The refrigerating process of carbon dioxide impacts.
The plurality of hole is inclined hole.Described inclined hole is around the distribution in a week of interior siphunculus.As it is shown in figure 1, the effect of this kind of structure
A lot.During carrying out freezing partly, in main pipeline, ensure certain liquid level, at any time through liquid down-pipe electromagnetic valve
Liquid make-up carbon dioxide in down-pipe, the return duct mouth of pipe is positioned at above carbon dioxide liquid level, in case liquid stream in main pipeline
Enter return duct；There is inclined hole on liquid down-pipe tube wall, both got rid of liquid flash gas in interior siphunculus, liquid can be made again at liquid
Short-circuit cycle near position.Electromagnetic valve is comprised on described interior siphunculus.Multiple pressure transducer and/or temperature are distributed in described interior siphunculus
Degree sensor.Therefore Based Intelligent Control can also be realized.
As further preferably, 1, have one or two pressure transducer in every pipe, and electromagnetic valve linking controls liquid
Position, it is ensured that every pipe liquid level is identical.Holding wire is outer with pipe to be connected.2, correct each pressure by main pipeline liquid level before start to pass
The actual error of sensor, and it is stored in computerized control system.3, the internal every 200mm of feed pipe of frigo opens a d6 aperture, outside 45 °
Upper inclination, short-circuit cycle at liquid level.4, hydrocone type vaporizer and carbon dioxide heat exchange, make co 2 liquefaction.Underground heat will become
For carbon dioxide flows power, save refrigerating medium circulating pump.
Need to highlight and illustrate:
Liquid tap is so-called down-pipe；Gas service pipe the most so-called embedment pipe.
1, carbon dioxide and liquid share supervisor and main, main pipeline slope aspect arm.So make liquid carbon dioxide
Rely on gravity to flow to arm, and gaseous carbon dioxide flows at eminence heat exchanger, at heat exchanger, carbon dioxide is liquefied, shape
Become vacuum.
2, certain liquid level is ensured in main pipe, can be at any time through liquid tap electromagnetic valve liquid make-up two in arm
Carbonoxide.
3, in gas service pipe upper end rises up into main above liquid level, in case liquid flows into arm through gas service pipe in main.
4, there is inclined hole (see figure) on liquid tap tube wall, both got rid of flash gas in liquid tap, liquid can be made again to exist
Short-circuit cycle near liquid level, is no longer pass through the circulation of liquid tap least significant end, prevents liquid from flowing to gas more than liquid level simultaneously and prop up
Guan Zhong.
5, arm bottom dress is no less than two pressure transducers, and pressure transducer and liquid supply electromagnetic valve joint control, according to pressure
Data and the relation of liquid level, control the liquid level in different arm, make liquid level identical.
Hereinafter concrete several innovative points of this patent are further illustrated and improve, optionally:
Option A: the gas-liquid self-cycle structure of a kind of mine frozen structure, it is characterised in that comprise main pipeline, main pipeline
In comprise and the internal embedment pipe connected of main pipeline, also comprise the down-pipe that connect internal with main pipeline, down-pipe stretches into supervisor
The height in road is less than the height of embedment pipe.The technique effect of the essence that the technical scheme at this place is played and the process that realizes thereof are for such as
Under: this place provides the structure of a kind of liquids and gases energy automatic shunt, the structure before being different from, and is all to use some media
Separating, this place is directly inside a container, uses liquid level and the potential difference of pipeline, and the height of different pipelines is inconsistent,
A part is under liquid level, and a part is on liquid level, therefore, it is possible to realize shunting and Automatic Cycle, without outside resources, the most fully
Make use of embedment pipe can imbed underground and utilize the advantage of underground heat, achieve a kind of structure of Automatic Cycle in a creative way, the most prominent
Go out is to complete this effect inside the single cavity that a main pipeline connects, and transport limit, limit separates, effective.The gas-liquid at this place
Loop structure the most only can be used in mine field, it is also possible to is other field.The structure at this place is individually can be real
The monomer of existing function.
In conjunction with Fig. 1, described embedment pipe comprises multiple, and down-pipe separates multiple interior siphunculus and stretches in embedment pipe.The skill at this place
Technique effect and the process that realizes thereof of the essence that art scheme is played are as follows: this place provides the implementation of a kind of down-pipe
With realize structure, but similar implementation is all in the protection domain of this patent, such as, can be each with multiple down-pipes
The all corresponding down-pipe of embedment pipe can also.
Electromagnetic valve is comprised on described down-pipe.
Connect internal with main pipeline of described down-pipe does not still extend into this main pipeline, and embedment pipe stretches into main pipeline and comprises embedment
Pipe inserting end.Technique effect and the process that realizes thereof of the essence that the technical scheme at this place is played are as follows: combine accompanying drawing, highly
The most inconsistent, there are a variety of implementation and structure, can be the structure of preferably this place explanation, not extend into so that liquid energy
Conveniently flow to.
Described down-pipe comprises more than one.
As preferably, described down-pipe is positioned at the extreme lower position of main pipeline.The essence that the technical scheme at this place is played
Technique effect and the process that realizes thereof are as follows: extreme lower position can be conducive to supplementing of liquid.In like manner: described down-pipe connects and divides
Stream part, distributary division is allocated as the extension into main pipeline, and described down-pipe is positioned at the geometric center position of shunting part.
Below for shunting part another realize structure, described distributary division be divided into circle or one circle tubulose knot
Structure.
Option b:
A kind of mine freezing partial freezing structure, it is characterised in that comprising heat exchanger, heat exchanger connects carbon dioxide to be provided
Structure, heat exchanger is also connected with main pipeline, comprises and the internal embedment pipe connected of main pipeline in main pipeline, also comprise with in main pipeline
The down-pipe of portion's connection, down-pipe stretches into the height height less than embedment pipe of main pipeline；Described down-pipe connects shunting part,
Described distributary division is divided into arc or straight line pipeline.The technique effect of the essence that the technical scheme at this place is played and in fact
Existing process is as follows: the pipeline of arc can conveniently form the freeze wall of arc, and the pipeline of straight line can conveniently form freeze wall, differs
Determine simply to be applied to mine freezing, it is also possible to for the local disaster relief etc., the disaster relief when of such as infiltration in colliery, carbon dioxide
Compared to saline, advantage has a lot, and traditional mine freezes to use brine system circulation, and saline is refrigerating medium；This technology uses
Carbon dioxide replaces traditional brine system, and carbon dioxide is refrigerating medium.
Saline heat exchange is sensible heat transfer, and efficiency is low；Carbon dioxide heat exchange is latent heat heat exchange, and heat exchange efficiency is greatly improved.Salt
It is power that water circulation needs brine pump；Carbon dioxide recycle is with underground heat as power, and liquid CO 2 absorbs heat and becomes gas
Rise to supervisor, then liquefy to heat exchanger, be not required to external impetus all the time.Saline heat exchange temperature in whole arm is essentially identical,
Borehole wall entirety is freezed simultaneously；Carbon dioxide heat exchange starts with liquid level, and along with the increase of the liquid level degree of depth, pressure strengthens, evaporating temperature
Improving, temperature is also improving.It is computed, when being adjusted to-30 DEG C at liquid level, at lower 60 meters of liquid level, is-20 DEG C.So carbon dioxide
Freezing as partial freezing, energy-saving effect is obvious.
The pipeline of described arc comprises multiple, and the pipeline of multiple arcs is concentric circular distribution；The pipeline of described arc is circle
The pipeline of shape.Technique effect and the process that realizes thereof of the essence that the technical scheme at this place is played are as follows: as preferably, this place
Mechanism can form multilayer frozen wall so that permeable dangerous minimizing, circle belongs to special arc, and this place provides one
Plant special preferred structure.
As further preferably, described arc or the pipeline of straight line be the shape closed.The technical scheme at this place
Technique effect and the process that realizes thereof of the essence played are as follows: the shape of closing can adapt to the shape of multiple well, because
A lot of wells are not necessarily standard shape, and this place structure makes the shape of freeze wall have to be not necessarily cylindrical.
As further improving, described arc or the pipeline connection fixed above lift structure of straight line, promote knot
The axle of structure connects pipeline, by hose connection between pipeline and main pipeline.The technology of the essence that the technical scheme at this place is played
Effect and the process that realizes thereof are as follows: this place makes pipeline energy easy of rise, the freezing region of convenient adjustment, adjusts freezing region
Mode will be not only by also for adjusting, moreover it is possible to adjusts height.
As further improving, carbon dioxide provides device to connect shunting part by the pipeline tilted.
Described arc or the pipeline of straight line comprise many groups, the sizes of many groups are inconsistent.The technical scheme at this place is risen
To the technique effect of essence and the process that realizes be as follows: size is inconsistent therefore, it is possible to adapt to the well of all size.
Scheme C:
A kind of mine freezing microcirculation structure, it is characterised in that comprise tubular structure, tubular structure comprises multiple hole.
Technique effect and the process that realizes thereof of the essence that the technical scheme at this place is played are as follows: the structure at this place is individually can be real
The monomer of existing function, porose on liquid tap tube wall, both got rid of flash gas in liquid tap, liquid can be made again attached in liquid level
Nearly short-circuit cycle, is no longer pass through the circulation of liquid tap least significant end, prevents liquid from flowing in gas service pipe more than liquid level simultaneously.Liquid
Body arm is so-called down-pipe；Gas service pipe the most so-called embedment pipe.
As the most preferably, described tubular structure is down-pipe, comprises embedment pipe, is inserted with dirty in embedment pipe
Pipe, down-pipe part in embedment pipe comprises multiple hole.Described hole is inclined hole.
In conjunction with accompanying drawing, described inclined hole is inclined hole upward.
The most preferably, described inclined hole is to tilt pipeline upward.Pipeline upward can prevent liquid in liquid level simultaneously
More than flow in gas service pipe.
As further preferably, described down-pipe comprises central canal, central canal separate multiple branch down-pipe and then
Stretch into again in multiple embedment pipe.Technique effect and the process that realizes thereof of the essence that the technical scheme at this place is played are as follows: this
The convenient liquid adjusted in overall multiple pipelines of the structure at place.
The down-pipe of described branch folds into embedment pipe in the middle part of embedment pipe.The essence that the technical scheme at this place is played
Technique effect and the process that realizes thereof are as follows: the convenient liquid that guides enters embedment pipe.As the most preferably, invagination can be
Invagination with arc.
The plurality of hole is positioned at the side of tubular structure.Or the plurality of hole is around tubular structure week cloth.The skill at this place
Technique effect and the process that realizes thereof of the essence that art scheme is played are as follows: the structure at this place can be by equal for the surrounding of embedment pipe
Freezing is got up.
Multiple pressure transducer and/or temperature sensor are installed on described down-pipe.The technical scheme at this place is played
The technique effect of essence and the process that realizes be as follows: arm bottom dress is no less than two pressure transducers, pressure transducer
With liquid supply electromagnetic valve joint control, according to pressure data and the relation of liquid level, control the liquid level in different arm, make liquid level identical.
It should be noted that multiple schemes that this patent provides comprise the basic scheme of itself, separate, the most mutually
Restriction, but it also is able in the case of not conflicting be mutually combined, and reaches multiple effect and jointly realizes.
Of the present utility model ultimate principle, principal character and of the present utility model advantage have more than been shown and described.Ability
Territory skilled person will appreciate that this utility model is not restricted to the described embodiments, described in above-described embodiment and description
Principle of the present utility model is simply described, on the premise of without departing from this utility model spirit and scope, this utility model also can
Having various changes and modifications, these changes and improvements both fall within claimed scope.
Claims (8)
1. the energy-conservation quick mine frozen structure that flows automatically, it is characterised in that comprise main pipeline, main pipeline stretches out multiple energy
Embedment pipe located underground, also comprises the down-pipe connected internal with main pipeline, and down-pipe stretches into the height of main pipeline less than burying
Entering the height of pipe, described down-pipe stretches out interior siphunculus, and interior siphunculus stretches in embedment pipe, described interior siphunculus part in embedment pipe
Comprising multiple hole, main pipeline is connected to liquid carbon dioxide and provides structure.
2. a kind of energy-conservation quick mine frozen structure that flows automatically as claimed in claim 1, it is characterised in that described main pipeline court
Under stretch out multiple embedment pipe, described embedment pipe be circumferentially distributed.
3. a kind of energy-conservation quick mine frozen structure that flows automatically as claimed in claim 1, it is characterised in that described main pipeline is even
Then shunting part, described distributary division is divided into platy structure, and it stretches out multiple embedment pipe down.
4. a kind of energy-conservation quick mine frozen structure that flows automatically as claimed in claim 3, it is characterised in that described main pipeline
And/or the material of shunting part is adiabatic material；Electromagnetic valve is comprised on described down-pipe.
5. a kind of energy-conservation quick mine frozen structure that flows automatically as claimed in claim 1, it is characterised in that the plurality of hole is
Inclined hole.
6. the as claimed in claim 5 a kind of energy-conservation quick mine frozen structure that flows automatically, it is characterised in that described inclined hole around
The distribution in one week of interior siphunculus.
7. a kind of energy-conservation quick mine frozen structure that flows automatically as claimed in claim 1, it is characterised in that on described interior siphunculus
Comprise electromagnetic valve.
8. a kind of energy-conservation quick mine frozen structure that flows automatically as claimed in claim 1, it is characterised in that in described interior siphunculus
Multiple pressure transducer and/or temperature sensor are distributed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620480609.8U CN205858352U (en) | 2016-05-24 | 2016-05-24 | A kind of energy-conservation quick mine frozen structure that flows automatically |
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| CN201620480609.8U CN205858352U (en) | 2016-05-24 | 2016-05-24 | A kind of energy-conservation quick mine frozen structure that flows automatically |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014418A (en) * | 2016-05-24 | 2016-10-12 | 陕西联盛机电工程有限公司 | Quick self-flowing and energy-saving mine freezing structure and method |
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2016
- 2016-05-24 CN CN201620480609.8U patent/CN205858352U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014418A (en) * | 2016-05-24 | 2016-10-12 | 陕西联盛机电工程有限公司 | Quick self-flowing and energy-saving mine freezing structure and method |
| CN106014418B (en) * | 2016-05-24 | 2019-08-16 | 西安联盛能源科技有限公司 | A kind of gravity flow energy saving quickly mine frozen structure and freezing method |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Quick self-flowing and energy-saving mine freezing structure and method Effective date of registration: 20190820 Granted publication date: 20170104 Pledgee: Xi'an Science and Technology Financial Service Center Co., Ltd. Pledgor: Xi'an Liansheng Energy Technology Co., Ltd. Registration number: Y2019980000050 |
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Date of cancellation: 20200828 Granted publication date: 20170104 Pledgee: Xi'an Science and Technology Financial Service Center Co.,Ltd. Pledgor: XI'AN LIANSHENG ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2019980000050 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A mine freezing structure with gravity flow energy saving and fast speed Effective date of registration: 20201023 Granted publication date: 20170104 Pledgee: Xi'an Science and Technology Financial Service Center Co.,Ltd. Pledgor: XI'AN LIANSHENG ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2020610000185 |
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Date of cancellation: 20211115 Granted publication date: 20170104 Pledgee: Xi'an Science and Technology Financial Service Center Co.,Ltd. Pledgor: XI'AN LIANSHENG ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2020610000185 |
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