CN208668398U - A kind of partial freezing device - Google Patents
A kind of partial freezing device Download PDFInfo
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- CN208668398U CN208668398U CN201821198479.4U CN201821198479U CN208668398U CN 208668398 U CN208668398 U CN 208668398U CN 201821198479 U CN201821198479 U CN 201821198479U CN 208668398 U CN208668398 U CN 208668398U
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Abstract
The utility model relates to it is a kind of for city underground engineering freeze in the partial freezing device that can effectively reduce non-freezing section loss of refrigeration capacity, including inlet tube, liquid back pipe and freezing pipe, the freezing pipe is mainly by non-freezing section freezing pipe, freeze section freezing pipe and taper basil composition, inlet tube and liquid back pipe are mounted in freezing pipe, the upper end of the two extends to outside freezing pipe, the partial freezing device also includes heat-barrier material, insulating connector, transition spool piece, aperture partition, heat-preservation cotton, by installing heat insulation joint in freezing pipe, freeze casing pack heat-barrier material, it is laid with the measures such as heat-preservation cotton, reduce the loss of refrigeration capacity (heat transfer of non-freezing section, thermal convection and heat radiation), improve the cooling capacity utilization rate of partial freezing device, electrical power is matched to refrigeration machine, freeze to hand over the circle time, non-freezing section soil excavation is significant.Freezing pipe structure type is simple, convenient for scene splicing and installation, can be widely used in freezing engineering.
Description
Technical field
The present invention relates to the partial freezing field in a kind of city underground engineering freezing technology, especially a kind of partial freezing
Device.
Background technique
With the development of process of modernization, demand of the people to space is gradually increased, therefore is necessarily required to build ground
Lower railway is also the effective measures for alleviating traffic congestion.
By taking Beijing area as an example, by the characteristics of the vertical distribution of Beijing area stratum it is found that with the increase of cutting depth, ovum
Stone, gravel gradually increase, and underground water content is also gradually increased, traditional supporting means such as diaphram wall, sealing campshed, well
Point dewatering etc. occurs poor for applicability, increased costs in succession, is unable to satisfy the problems such as construction requirement, it is difficult to meet requirement of engineering, and
Construction freezing method is not influenced but by stratum and water content.
Freezing process is to make the water freezing in stratum using artificial cooling technology, soil layer is become water-tight structure, increases it
Strength and stability, so as to the special constructional technique constructed under the protection of frost wall." the basin that professor Zhang Jinxun proposes
Shape " freezing technology not only can solve the problem of groundwater of sand-pebble layer Metro station excavation, and not by water barrier buried depth shadow
It rings, there is extensive future in engineering applications.And " basin bottom " therein is needed using partial freezing's technology strict control when freezing
" basin bottom " thickness not only needs to avoid the Lack of support problem caused by thickness is excessively thin because of " basin bottom ", but also needs to avoid " basin bottom " thick
Constructional difficulties caused by spending greatly and the thaw collapse displacement for being unable to control the later period.
Currently, for the loss of refrigeration capacity for reducing non-freezing section, main use changes between liquid back pipe in partial freezing's engineering
It is vacuumized away from, non-freezing section setting partition, non-freezing section, the methods of non-freezing section heat preservation, but these types of structure is mostly with single shape
Formula is applied in partial freezing's engineering, does not consider the loss of refrigeration capacity of a variety of situations, causes to freeze in practical partial freezing's engineering
The reality at knot station matches the far super calculated value of electrical power, and permafrost region is finally developed into non-frozen soil region, increases construction cost and duration.This
It outside, is mostly the structure type by obstructing non-freezing section radial direction heat transfer, related freeze section in current partial freezing device structure
To non-freezing section axial heat transfer and non-freezing section heat radiation and thermal convection caused by loss of refrigeration capacity be rarely reported, and this three
Kind cooling capacity transfer mode occupies certain weight proportion in non-freezing section.Therefore, a variety of hot transmitting forms can effectively be obstructed by being badly in need of one kind
Frigo structures/methods, the comprehensive loss of refrigeration capacity for reducing non-freezing section improves partial freezing device cooling capacity utilization rate.
Summary of the invention
It is an object of the invention to overcome the shortcomings of the prior art, invent a kind of convenient for freezing pipe docking, water shutoff
Good, impact resistant, the partial freezing device that non-freezing section loss of refrigeration capacity can be effectively reduced.
To achieve the above object, the present invention can be achieved through the following technical solutions:
A kind of partial freezing device, including inlet tube, liquid back pipe and freezing pipe, the freezing pipe are mainly freezed by non-freezing section
Pipe, freeze section freezing pipe and taper basil composition, inlet tube and liquid back pipe are mounted in freezing pipe and upper end extends to jelly
Knot pipe is outer, it is characterised in that the partial freezing device also includes heat-barrier material, insulating connector, transition spool piece, aperture partition, protects
Wen Mian, wherein the upper end of the lower end connection insulating connector of non-freezing section freezing pipe, the lower end of insulating connector connect transition spool piece,
Transition spool piece lower end is fixedly connected with aperture partition, and aperture partition is fixedly connected with the freeze section freezing pipe of lower part, also, aperture
It is opened up on partition there are two circular hole, the inlet tube is arranged in one of circular hole and extends to the bottom of frigo, inlet tube
It being fixedly connected at circular hole with aperture partition and is sealed in junction, the liquid back pipe is mounted in non-freezing section freezing pipe,
Lower end is fixedly connected with aperture partition at another circular hole and seals in junction；In non-freezing section freezing pipe, it is described into
Between liquid pipe and liquid back pipe and between inlet tube, liquid back pipe and the tube wall of non-freezing section freezing pipe, it is filled with heat-barrier material；
Heat-preservation cotton is wrapped up outside the non-freezing section freezing pipe.
Preferably, the aperture partition is steel plate, the upper surface of steel plate and the transition spool piece welded seal, lower surface with
The freeze section freezing pipe welded seal, inlet tube, liquid back pipe at the circular hole with steel plate welded seal.
Preferably, the heat-barrier material is polyurethane.
Preferably, the non-freezing section freezes pipe outer wall and is coated with thermal radiation resistant material, forms thermal radiation resistant material layer.
Preferably, the non-freezing section freezing pipe has undergauge section and linkage section, and the heat-preservation cotton is wrapped in undergauge section, wraps
Wrapping up in rear heat-preservation cotton outer diameter and freeze section, to freeze pipe outside diameter equal, is formed and continuously freezes pipe outer wall.
Preferably, the insulating connector is insulation to silk, and the linkage section has internal screw thread, and transition spool piece is inner screw sheath
Pipe, insulation are threadedly coupled the upper end of silk with linkage section, and lower end is threadedly coupled with internally threaded sleeve, and connecing in upper and lower ends
Water shutoff washer is provided at head.
Preferably, the taper basil is inverted cone or inverted pyramids.
Preferably, in aperture partition hereinafter, the inlet tube by way of bending with freeze tube hub and be overlapped, convenient for cold
Measure radially even transmitting.Preferably, the non-freezing section freezing pipe and freeze section freezing pipe and its internal inlet tube, liquid back pipe
It can lengthen by welding, to meet different requirement of engineering, insulating connector can arrange one or more according to actual requirement.
Advantages of the present invention and generate the utility model has the advantages that
(1) freezing pipe is by insulating connector (insulation to silk), and barrier cooling capacity is along freezing pipe outer wall from freeze section to non-jelly
Section transmitting is tied, it is axial to obstruct cooling capacity conduction.
(2) heat-barrier material (poly- ammonia is filled between inlet tube, liquid back pipe and between freezing pipe and inlet tube, liquid back pipe
Ester), barrier cooling capacity radially freezes pipe outer wall by being transferred to non-freezing section into, liquid back pipe, radial to obstruct cooling capacity conduction.
(3) non-freezing section freezing pipe is laid with heat-preservation cotton, barrier cooling capacity be directed radially through heat transfer and thermal convection generate it is cold
Amount loss.
(4) non-freezing section freezes pipe outer wall spraying thermal radiation resistant material, and barrier cooling capacity is directed radially through heat radiation form and dissipates
It loses, it is radial to obstruct cooling capacity radiation.
(5) non-freezing section freezing pipe uses undergauge form, reduces the damages of the techniques to heat-preservation cotton such as construction drill, increases and protects
The integrality of warm cotton.
(6) inlet tube is overlapped feed liquor tube hub with tube hub is freezed in freeze section, makes salt
The radially even transmitting cooling capacity of water forms uniform, continuous frost wall, prevents from freezing loophole.
(7) effectively the soil body in non-freezing section region is avoided finally to develop into permafrost region, avoids increasing construction cost and duration.
(8) freezing pipe structure type is simple, only simply need to weld or be threadedly coupled, convenient for scene splicing and installation, just
It is flexibly lengthened according to the needs of the depth of freezing.
Detailed description of the invention
Fig. 1 is overall appearance schematic diagram of the present invention；
Fig. 2 is whole cutting schematic three dimensional views of the invention；
Fig. 3 is whole cutting main view of the invention；
Fig. 4 is splice sections partial enlargement schematic three dimensional views of the present invention；
Fig. 5 is splice sections partial elevational elevation view of the present invention；
Fig. 6 is a sectional top view of Fig. 5；
Fig. 7 is the b sectional top view of Fig. 5；
Fig. 8 is the c sectional top view of Fig. 5；
Fig. 9 is the d sectional top view of Fig. 5；
Figure 10 is the e sectional top view of Fig. 5；
Figure 11 is non-freezing section freezing pipe structural schematic diagram of the present invention；
In figure: 1. inlet tubes；2. liquid back pipe；3. heat-preservation cotton；4. thermal radiation resistant material layer；5. non-freezing section freezing pipe；6.
Heat-barrier material；7. water shutoff washer；8. insulating connector；9. transition spool piece；10. aperture partition；11. freeze section freezing pipe；12. taper
The basil；13. undergauge section；14. linkage section.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as protecting the present invention
The limitation of range.
It should also be noted that, term "comprises/comprising", " by ... form " or its any other variant be intended to
Non-exclusive inclusion, so that the product, equipment, process or the method that include a series of elements not only include those elements,
And when needing can also include other elements that are not explicitly listed, or further include for this product, equipment, process or
The intrinsic element of method.In the absence of more restrictions, by sentence " including/include ... ", " by ... form " limit
Fixed element, it is not excluded that there is also other identical elements in product, equipment, process or the method for including the element.
Embodiment of the present invention is described further in detail below.
Referring to attached drawing 1-5, a kind of partial freezing device that can effectively reduce non-freezing section loss of refrigeration capacity, including inlet tube 1,
Liquid back pipe 2 and freezing pipe, the freezing pipe is mainly by non-freezing section freezing pipe 5, freeze section freezing pipe 11 and the taper basil 12
Composition, inlet tube and liquid back pipe are mounted in freezing pipe, and the upper end of the two extends to outside freezing pipe, and freezing pipe seals outside freezing pipe
Top, and it is welded with the goat's horn of inlet tube, liquid back pipe.
Partial freezing device of the invention also includes heat-barrier material 6, insulating connector 8, transition spool piece 9, aperture partition 10,
In, the upper end of the lower end connection insulating connector of non-freezing section freezing pipe, the lower end of insulating connector connects transition spool piece, transition spool piece
Lower end is fixedly connected with aperture partition, and aperture partition is fixedly connected with the freeze section freezing pipe of lower part, also, is opened on aperture partition
If the inlet tube is arranged in one of circular hole and extends to the bottom of frigo, and inlet tube is at circular hole there are two circular hole
It is fixedly connected with aperture partition and is sealed in junction, the liquid back pipe is mounted in non-freezing section freezing pipe, and lower end is another
It is fixedly connected at one circular hole with aperture partition and is sealed in junction；In non-freezing section freezing pipe, the inlet tube with return
Between liquid pipe and between inlet tube, liquid back pipe and the tube wall of non-freezing section freezing pipe, it is filled with heat-barrier material.Preferably, institute
Stating heat-barrier material can be used polyurethane or other similar materials that can block heat transfer.Further, non-freezing section is freezed
Certain thickness heat-preservation cotton 3 is wrapped up outside pipe 5, the laying depth cotton of heat-preservation cotton can require to be arranged according to loss of refrigeration capacity, by non-
Freeze section freezing pipe is laid with heat-preservation cotton, can more efficiently obstruct the cooling capacity damage for being directed radially through heat transfer and thermal convection generation
It loses.
Inlet tube 1, liquid back pipe 2 weld at the circular hole of aperture partition 10 with steel plate, and seal at welding position, that is, adopt
It is with weld seam is fully welded that the gap filling between inlet tube 1, liquid back pipe 2 and circular hole is closely knit, it is ensured that sealing is water-tight.
Aperture partition 10 is steel plate, and inlet tube 1, liquid back pipe 2 are iron pipe or steel pipe, the upper surface of steel plate and the transition sleeve
Pipe 9 welds, and seals at welding position, and lower surface and the freeze section freezing pipe 11 weld, and seal at welding position.
By setting aperture partition and partition is completely sealed separated up and down, so that the cold liquid in freeze section freezing pipe
It can only recycle in freeze section freezing pipe, be flowed back after recycling by liquid back pipe, be frozen without flowing into non-freezing section by any gap
It ties in the gap in pipe, i.e., cold liquid may not flow into non-freezing section freezing pipe into the gap between, liquid back pipe, it is ensured that cold liquid is non-
It only reduces cooling capacity into flowing in, liquid back pipe in freeze section freezing pipe and is directed radially through through the tube wall of non-freezing section freezing pipe
The loss of refrigeration capacity that heat transfer and thermal convection generate.
By the way that insulating connector is arranged, the freeze section of the non-freezing section on freezing pipe top and lower part is separated, while each
Carry out the encapsulation process of thin portion in joint, it is ensured that upper and lower two parts will not occur liquid and flee, and can so effectively reduce cooling capacity
From freeze section to the axial heat transfer of non-freezing section, the loss of refrigeration capacity of non-freezing section is effectively reduced.
Referring to Fig. 3,11, freezes pipe outer wall spraying thermal radiation resistant material in non-freezing section, forms thermal radiation resistant material layer 4,
It cooling capacity can so be obstructed is directed radially through heat radiation form and scatter and disappear, achieve the purpose that radial to obstruct cooling capacity radiation loss.
Further, non-freezing section freezing pipe 5 has undergauge section 13 and linkage section 14, and undergauge section is the undergauge of uniform diameter
Section, heat-preservation cotton 3 are wrapped in undergauge section, the loss of refrigeration capacity that barrier cooling capacity is directed radially through heat transfer and thermal convection generates.Undergauge section
It is equal to freeze pipe outside diameter for outer diameter and freeze section after 13 package heat-preservation cottons, is formed and continuous freezes pipe outer wall.By by non-freezing section
Freezing pipe is arranged to variable-diameter structure, so that heat-preservation cotton and freeze section freezing pipe form continuous freezing pipe outside wall surface after package, drops
Damage of the techniques such as low construction drill to heat-preservation cotton, improve the integrality of heat-preservation cotton, effective protection heat-preservation cotton.
Preferably, for the insulating connector 8 using insulation to silk, the linkage section 14 of non-freezing section freezing pipe has internal screw thread,
Transition spool piece 9 is internally threaded sleeve, and insulation is threadedly coupled the upper end of silk with linkage section, and lower end and inner screw sheath pipe screw thread connect
It connects, and the joint of upper and lower ends is provided with water shutoff washer 7.Silk is convenient for and non-freezing section freezing pipe and internal screw thread in insulation
The connection of casing, simple process, while can ensure bonding strength.Water shutoff washer is added in joint, specifically may be provided at absolutely
Heat is at the interlude step of silk and at the lower end surface of corresponding non-freezing section freezing pipe 5, and insulation is to the interlude platform of silk
With the upper end surface of transition spool piece 9 at rank, water shutoff washer is respectively set, effective prevention is freezed liquid and fled by thread pitch to non-
In freeze section freezing pipe, axial heat transfer of the cooling capacity from freeze section to non-freezing section is effectively reduced, to effectively reduce non-jelly
Tie the loss of refrigeration capacity of section.
Insulating connector is not limited to be insulated the form to silk, as long as having thermal-insulation function, can prevent the biography of upper and lower cooling capacity
It passs, and convenient for the transition spool piece connection of the non-freezing section freezing pipe and lower part with top, this connection is not limited to spiral shell
Line connection can be clamping, the mode that this fields such as fin and groove mating connection know.
Referring back to Fig. 3, in aperture partition 10 hereinafter, the inlet tube 1 by way of bending with freeze tube hub and be overlapped,
Convenient for the radially even transmitting of cooling capacity, so enabling to the diameter of freezing pipe, received cooling capacity is uniform around, cooling capacity diameter
To uniformly diffusion around, is formed and effectively freeze to hand over circle, formed uniform, continuous frost wall, prevent from freezing loophole.
According to practice of construction needs, the freezing pipe of freeze section and non-freezing section and its internal welding can be passed through into, liquid back pipe
Mode lengthen, to meet different requirement of engineering, insulating connector can arrange one or more according to actual requirement.
Partial freezing device of the invention processing and fabricating by the following method:
(1) freeze section freezing pipe and the taper basil are welded as a whole first, the taper basil is inverted cone or inverted pyramids；
(2) inlet tube, liquid back pipe and aperture partition being welded as a whole, a circular steel plate can be used in aperture partition, referring to
Fig. 9 offers at least two circular holes thereon, in circular hole weld inlet tube, liquid back pipe, by inlet tube, liquid back pipe outer wall with
The edge of circular hole is welded and fixed, and seam welds are sealed, it is ensured that no leakage；
Inlet tube bending segment can be first welded before step (2), is overlapped freeze section feed liquor tube hub with tube hub is freezed.
(3) aperture partition and freeze section freezing pipe are welded as a whole, equally in seam crossing welded seal, it is ensured that do not leak
Liquid；
(4) transition spool piece and aperture partition are welded as a whole, equally in seam crossing welded seal, it is ensured that no leakage；
(5) insulating connector and transition spool piece are fixed as one；
Upper gas sealing washer first can be covered in insulating connector before step (5), it is ensured that connector and transition spool piece contact surface seal；
(6) non-freezing section freezing pipe is fixed as one with insulating connector；
Upper gas sealing washer first can be covered in insulating connector before step (6), it is ensured that non-freezing section freezing pipe connects with insulating connector
Contacting surface sealing；
(7) freeze casing pack heat-barrier material to non-freezing section, be preferably filled with polyurethane material；
(8) non-freezing section freezes pipe outer wall package heat-preservation cotton, and the heat-preservation cotton thickness of package requires to carry out according to loss of refrigeration capacity
Adjustment appropriate；
Before step (8), non-freezing section freezes pipe outer wall spraying thermal radiation resistant material, forms one layer of thermal radiation resistant material
Layer；
(9) freezing pipe binds and welds inlet tube, liquid back pipe goat's horn.
The partial freezing device advantage is: effectively reducing cooling capacity from freeze section to non-jelly by insulating connector (insulation to silk)
The axial heat transfer for tying section effectively reduces the radial direction of non-freezing section inlet tube and liquid back pipe by filling heat-barrier material (polyurethane)
Heat transfer effectively reduces radial heat transfer and the thermal convection of cooling capacity by heat-preservation cotton, is effectively subtracted by spraying thermal radiation resistant material
The radial heat radiation of few cooling capacity, is arranged by above structure and material, obstructs non-jelly from three kinds of basic modes of heat transfer
The loss of refrigeration capacity for tying section, effectively reduces the loss of refrigeration capacity of non-freezing section, and can be effectively reduced refrigeration machine matches electrical power, saves electricity
Can, while can shorten and freeze to hand over the circle time, it accelerates construction progress.Meanwhile non-freezing section is effectively reduced by the above measure
The cooling capacity of freezing pipe is transmitted outward, so as to effectively avoid the soil body in non-freezing section region from finally developing into permafrost region, is avoided
Increase construction cost and duration, it is significant to non-freezing section soil excavation.Freezing pipe structure type is simple, only needs simple
Welding is threadedly coupled,, being capable of extensive utilization convenient for flexibly being lengthened according to the needs of the depth of freezing convenient for scene splicing and installation
In freezing engineering.
Above example, only with for the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited in
This, anyone skilled in the art, within the technical scope of the present disclosure, it is contemplated that variation or equally replace
It changes, should all cover within the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection of claims
Subject to range.
Claims (9)
1. a kind of partial freezing device, including inlet tube, liquid back pipe and freezing pipe, the freezing pipe are mainly freezed by non-freezing section
Pipe, freeze section freezing pipe and taper basil composition, inlet tube and liquid back pipe are mounted in freezing pipe and upper end extends to jelly
Knot pipe is outer, it is characterised in that the partial freezing device also includes heat-barrier material, insulating connector, transition spool piece, aperture partition, protects
Wen Mian, wherein the upper end of the lower end connection insulating connector of non-freezing section freezing pipe, the lower end of insulating connector connect transition spool piece,
Transition spool piece lower end is fixedly connected with aperture partition, and aperture partition is fixedly connected with the freeze section freezing pipe of lower part, also, aperture
It is opened up on partition there are two circular hole, the inlet tube is arranged in one of circular hole and extends to the bottom of frigo, inlet tube
It being fixedly connected at circular hole with aperture partition and is sealed in junction, the liquid back pipe is mounted in non-freezing section freezing pipe,
Lower end is fixedly connected with aperture partition at another circular hole and seals in junction；In non-freezing section freezing pipe, it is described into
Between liquid pipe and liquid back pipe and between inlet tube, liquid back pipe and the tube wall of non-freezing section freezing pipe, it is filled with heat-barrier material；
Heat-preservation cotton is wrapped up outside the non-freezing section freezing pipe.
2. partial freezing device as described in claim 1, which is characterized in that the aperture partition is steel plate, the upper surface of steel plate
With the transition spool piece welded seal, lower surface and the freeze section freezing pipe welded seal, inlet tube, liquid back pipe are in the circle
At hole with steel plate welded seal.
3. partial freezing device as described in claim 1, which is characterized in that the heat-barrier material is polyurethane.
4. partial freezing device as described in claim 1, which is characterized in that the non-freezing section freezes pipe outer wall and is coated with solar heat protection
Radiative material forms thermal radiation resistant material layer.
5. partial freezing device as described in claim 1, which is characterized in that the non-freezing section freezing pipe has undergauge section and company
Section is connect, the heat-preservation cotton is wrapped in undergauge section, and it is equal to freeze pipe outside diameter for heat-preservation cotton outer diameter and freeze section after package, is formed continuous
Freeze pipe outer wall.
6. partial freezing device as claimed in claim 5, which is characterized in that the insulating connector is insulation to silk, the connection
Section has internal screw thread, and transition spool piece is internally threaded sleeve, and insulation is threadedly coupled the upper end of silk with linkage section, lower end and internal screw thread
Casing threads connection, and the joint of upper and lower ends is provided with water shutoff washer.
7. partial freezing device as described in claim 1, which is characterized in that in aperture partition hereinafter, the inlet tube is by curved
The mode of folding is overlapped with tube hub is freezed, and is convenient for the radially even transmitting of cooling capacity.
8. partial freezing device as described in claim 1, which is characterized in that the taper basil is inverted cone or inverted pyramids.
9. partial freezing device as described in claim 1, which is characterized in that the non-freezing section freezing pipe and freeze section freezing pipe
And its internal inlet tube, liquid back pipe can lengthen by welding, to meet different requirement of engineering, insulating connector can be according to reality
Border requires to arrange one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821198479.4U CN208668398U (en) | 2018-07-26 | 2018-07-26 | A kind of partial freezing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821198479.4U CN208668398U (en) | 2018-07-26 | 2018-07-26 | A kind of partial freezing device |
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| Publication Number | Publication Date |
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| CN208668398U true CN208668398U (en) | 2019-03-29 |
Family
ID=65831819
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| CN201821198479.4U Active CN208668398U (en) | 2018-07-26 | 2018-07-26 | A kind of partial freezing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024548A (en) * | 2018-07-26 | 2018-12-18 | 北京城建集团有限责任公司 | A kind of partial freezing device and production method |
| CN113106964A (en) * | 2021-05-14 | 2021-07-13 | 北京中煤矿山工程有限公司 | Freezing pipe weld cracking prevention mechanism and freezing pipe weld cracking prevention method |
| CN113175327A (en) * | 2021-04-28 | 2021-07-27 | 安徽理工大学 | Freezing pipe of inclined shaft under condition of fast tunneling of fully-mechanized excavating machine and arrangement method of freezing pipe |
-
2018
- 2018-07-26 CN CN201821198479.4U patent/CN208668398U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024548A (en) * | 2018-07-26 | 2018-12-18 | 北京城建集团有限责任公司 | A kind of partial freezing device and production method |
| CN109024548B (en) * | 2018-07-26 | 2023-10-31 | 北京城建集团有限责任公司 | Local freezer and manufacturing method |
| CN113175327A (en) * | 2021-04-28 | 2021-07-27 | 安徽理工大学 | Freezing pipe of inclined shaft under condition of fast tunneling of fully-mechanized excavating machine and arrangement method of freezing pipe |
| CN113106964A (en) * | 2021-05-14 | 2021-07-13 | 北京中煤矿山工程有限公司 | Freezing pipe weld cracking prevention mechanism and freezing pipe weld cracking prevention method |
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