CN202972378U - Freezing pipe heat insulation device - Google Patents
Freezing pipe heat insulation device Download PDFInfo
- Publication number
- CN202972378U CN202972378U CN 201220679446 CN201220679446U CN202972378U CN 202972378 U CN202972378 U CN 202972378U CN 201220679446 CN201220679446 CN 201220679446 CN 201220679446 U CN201220679446 U CN 201220679446U CN 202972378 U CN202972378 U CN 202972378U
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- pipe
- freezing
- inner tube
- external pipe
- vacuum
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Abstract
A freezing pipe heat insulation device comprises inner layer pipes which are arranged in the inner portions between outer layer pipes in a penetrating mode at intervals. Two ends of the outer layer pipes and the inner layer pipes form a sealed cabin through seal head rings in a sealing mode. Vacuum-pumping pipes communicated with the sealed cabin are arranged on the seal head rings. A freezing heat insulation pipe with the sealed cabin is formed by welding of a double-layer steel pipe. The outer layer pipes protect the sealed cabin. The inner layer pipes are communicated with an upper freezing pipe and a lower freezing pipe and can penetrate through a low-temperature saline water liquid supply pipe. The structure is simple, the freezing pipes are convenient to be connected in an abutting mode, collision is resistant, the sealed cabin is all along kept in a sealed state under the extreme environment in welding, mounting and freezing processes, the fact that the ultra-low heat conductivity coefficient of heat insulation materials (namely vacuum environment of the sealed cabin) is in a stable state is guaranteed, and accordingly the problem that the heat insulation materials are soaked in water and frozen and out of work is avoided, and sealing and water insulation effects are good.
Description
Technical field
The utility model belongs to special shaft-sinking technique field, particularly the freezing pipe heat-proof device at local non freezing position in a kind of freeze-wellboring technology.
Background technique
In partial freezing's engineering, the freezing pipe of non-freeze section need to be reduced caliber or add thermal-protective coating.For example in the inclined shaft freezing engineering, the peripheral aquifer water-bearing stratum that inclines need to be dug the position is frozen into the fluid-tight wall that freezes of tubular, and the pick of pit shaft block part does not need to freeze; Mainly rely on the vertical frozen pipe to form the frost wall of inclines periphery for darker inclined shaft freezing engineering, this freezing pipe that just needs to pass pit shaft pick block part becomes heat insulating tube, build the cold transmission at position with the restriction pick, dig safely and fast block for pit shaft and create favorable conditions.
At present, the heat insulation measures that the position is built in pick is mainly the diameter that dwindles this position freezing pipe, and at its coated outside thermal-protective material, namely adopt filling high density polyurethane material and polyethylene tape multilayer end socket sealing technique between high pressure polyethylene plastic pipe and minor diameter freezing pipe.But, because the shrinkage of different materials in freezing process causes that contraction joint appears in end socket cracking, thermal-protective material and freezing pipe outer surface, cause and freeze heat insulating tube seal failure occurs in welding, installation, freezing process, cause thermal-protective coating to be in the immersion state that freezes, effect of heat insulation is poor.
The model utility content
The utility model provides a kind of freezing pipe heat-proof device of being convenient to freezing pipe docking, anti-collision and sealing good water insulation effect.
For achieving the above object, the technical solution of the utility model is: a kind of freezing pipe heat-proof device, comprise the inner tube that the interval wears in external pipe and external pipe, by end socket circle sealing formation sealed compartment, the end socket circle is provided with the vacuum-pumping tube that communicates with sealed compartment to external pipe with inner tube two ends.
Described vacuum-pumping tube top is provided with safety cover, and safety cover is bell mouth shape, and large mouthful of safety cover is fixed on end socket circle outer rim, and the osculum of safety cover is fixed on the inner tube outer wall.
Described inner tube two ends are provided with the reducing pipe collar.
Described inner tube two ends are provided with guide housing, and guide housing is bell mouth shape, and the osculum of guide housing is fixed on inner tube, and the large mouth of guide housing is between inner tube and external pipe, and vacuum-pumping tube is positioned at the axis projection zone of guide housing.
Described end socket circle protrusion external pipe end, end socket circle projection and external pipe end face form positioning table; External pipe two ends outer cover is provided with connecting pipe hoop.
Compared with prior art, the utility model has the advantages that:
1, the utility model comprises the inner tube that in external pipe and external pipe, the interval wears, external pipe and inner tube two ends form sealed compartment by the sealing of end socket circle, the end socket circle is provided with the vacuum-pumping tube that communicates with sealed compartment, consist of the heat insulating tube that freezes with sealed compartment by the double-layer pipe welding, external pipe protection sealed compartment, inner tube is communicated with the up and down freezing pipe, and can pass the hypothermic saline feed pipe, it is simple in structure, be convenient to the freezing pipe docking, anti-collision, sealed compartment is in welding, the extreme environment of installation and freezing process is in sealing state all the time, the ultralow thermal conductivity of guaranteeing thermal-protective material (being the vacuum environment of sealed compartment) is in steady state, thereby overcoming the thermal-protective material immersion freezes and the problem of inefficacy, the sealing good water insulation effect.
2, be provided with safety cover above vacuum-pumping tube, safety cover is bell mouth shape, and the large mouth of safety cover is fixed on the outer rim of end socket circle, and the osculum of safety cover is fixed on the outer wall of inner tube, and safety cover has the function of protection vacuum-pumping tube and guiding, location.
3, be provided with guide housing at the two ends of inner tube; guide housing is bell mouth shape; the osculum of guide housing is fixed on the inner tube end face; large mouthful of guide housing between inner tube and external pipe; and guarantee that vacuum-pumping tube is positioned at the axis projection zone of guide housing, guide housing has protection vacuum-pumping tube and guiding, locating function.
4, end socket circle protrusion external pipe end, end socket circle projection and external pipe end face form positioning table, and external pipe two ends outer cover is provided with connecting pipe hoop, in external pipe by in connecing tension sleeve and freezing pipe welding process, positioning table plays the role of positioning to freezing pipe, is convenient to welding and the installation of freezing pipe.
Description of drawings
Fig. 1 is the utility model embodiment 1 structural representation;
Fig. 2 is Fig. 1 ectomesoderm pipe and the freezing pipe caliber connection diagram when inconsistent;
Fig. 3 is the utility model embodiment 2 structural representation;
Fig. 4 is the connection diagram of Fig. 3 ectomesoderm pipe when consistent with the freezing pipe caliber.
Embodiment
Embodiment 1, freezing pipe heat-proof device as depicted in figs. 1 and 2, and it comprises the inner tube 2 that the external pipe 1 that consists of heat insulating tube and external pipe 1 interior interval wear, external pipe 1 and the coaxial setting of inner tube 2, external pipe 1 is shorter than inner tube 2.End socket circle 3 sealings at external pipe 1 and inner tube 2 two ends by ring-type form sealed compartments 4, and end socket circle 3 has sealing and locating function.Extreme environment in welding, installation and freezing process, sealed compartment 4 is in sealing state all the time, the ultralow thermal conductivity of guaranteeing thermal-protective material (vacuum environment of sealed compartment 4) is in steady state, thereby overcomes the problem that thermal-protective material soaks, freezes and lost efficacy.Be provided with the vacuum-pumping tube 5 that communicates with sealed compartment 4 on the end socket circle 3 of upper end, can implement to bleed to sealed compartment 4, the operation of pressure measurement, card envelope.
Be provided with safety cover 6 above vacuum-pumping tube 5, safety cover 6 is bell mouth shape, and the large mouth of safety cover 6 is fixed on the outer rim of end socket circle 3, and the osculum of safety cover 6 is fixed on the outer wall of inner tube 2, the function that safety cover 6 has protection vacuum-pumping tube 5 and leads, locates.Simultaneously, outer cover is provided with reducing pipe collar 8 at the two ends of inner tube 2, and during use, reducing pipe collar 8 welds with inner tube 2 outer walls, freezing pipe 7 inwalls respectively, realizes that reducing connects.
In the present embodiment, external pipe 1 is steel pipe with inner tube 2, and vacuum-pumping tube 5 is for vacuumizing copper pipe.
Embodiment 1 is applicable to the inconsistent situation of caliber of external pipe 1 and freezing pipe 7, during use, by vacuum-pumping tube 5 pressure testings, guarantees that sealed compartment 4 is withstand voltage, by the bleeding of vacuum-pumping tube 5, pressure measurement and card envelope, guarantees that sealed compartment 4 is in the low density vacuum state.When external pipe 1 when inconsistent, realizes that with freezing pipe 7 reducing is welded to connect by the reducing pipe collar 8 on inner tube 2 with freezing pipe 7 calibers that dock up and down.2 pairs of up and down freezing pipes 7 of inner tube play the connection effect, can pass the hypothermic saline feed pipe.In inner tube 2 and freezing pipe 7 butt welding termination process, inner tube 2, end socket circle 3 and safety cover 6 are 8 guiding of reducing pipe collar and positioning action.
In the freezing engineering installation process, need to pass the hypothermic saline feed pipe in freezing pipe 7 and inner tube 2, this moment, safety cover 6 or guide housing 61 played protection vacuum-pumping tube 5 and guiding.
Claims (5)
1. a freezing pipe heat-proof device, is characterized in that, comprises the inner tube that the interval wears in external pipe and external pipe, and by end socket circle sealing formation sealed compartment, the end socket circle is provided with the vacuum-pumping tube that communicates with sealed compartment to external pipe with inner tube two ends.
2. freezing pipe heat-proof device as claimed in claim 1, is characterized in that, is provided with safety cover above described vacuum-pumping tube, and safety cover is bell mouth shape, and large mouthful of safety cover is fixed on end socket circle outer rim, and the osculum of safety cover is fixed on the inner tube outer wall.
3. freezing pipe heat-proof device as claimed in claim 2, is characterized in that, described inner tube two ends are provided with the reducing pipe collar.
4. freezing pipe heat-proof device as claimed in claim 1, it is characterized in that, described inner tube two ends are provided with guide housing, guide housing is bell mouth shape, the osculum of guide housing is fixed on inner tube, the large mouth of guide housing is between inner tube and external pipe, and vacuum-pumping tube is positioned at the axis projection zone of guide housing.
5. freezing pipe heat-proof device as claimed in claim 4, is characterized in that, described end socket circle protrudes external pipe end, end socket circle projection and external pipe end face formation positioning table; External pipe two ends outer cover is provided with connecting pipe hoop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220679446 CN202972378U (en) | 2012-12-11 | 2012-12-11 | Freezing pipe heat insulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220679446 CN202972378U (en) | 2012-12-11 | 2012-12-11 | Freezing pipe heat insulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202972378U true CN202972378U (en) | 2013-06-05 |
Family
ID=48513453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220679446 Expired - Fee Related CN202972378U (en) | 2012-12-11 | 2012-12-11 | Freezing pipe heat insulation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202972378U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133821A (en) * | 2012-12-11 | 2013-06-05 | 河南煤炭建设集团有限责任公司 | Freezing pipe heat insulation device |
-
2012
- 2012-12-11 CN CN 201220679446 patent/CN202972378U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133821A (en) * | 2012-12-11 | 2013-06-05 | 河南煤炭建设集团有限责任公司 | Freezing pipe heat insulation device |
| CN103133821B (en) * | 2012-12-11 | 2015-09-02 | 河南煤炭建设集团有限责任公司 | A kind of freezing pipe heat-proof device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20211211 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |