CN114754219A - Novel ice plug jacket device for different pipe diameters - Google Patents
Novel ice plug jacket device for different pipe diameters Download PDFInfo
- Publication number
- CN114754219A CN114754219A CN202210426653.0A CN202210426653A CN114754219A CN 114754219 A CN114754219 A CN 114754219A CN 202210426653 A CN202210426653 A CN 202210426653A CN 114754219 A CN114754219 A CN 114754219A
- Authority
- CN
- China
- Prior art keywords
- shell
- outer shell
- ice plug
- pipe diameters
- different pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003044 adaptive effect Effects 0.000 claims abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 46
- 239000007788 liquid Substances 0.000 claims description 24
- 229910052757 nitrogen Inorganic materials 0.000 claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 6
- 238000012546 transfer Methods 0.000 description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000011551 heat transfer agent Substances 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 235000011089 carbon dioxide Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/103—Means for stopping flow from or in pipes or hoses by temporarily freezing liquid sections in the pipe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
- F16L53/70—Cooling of pipes or pipe systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a novel ice plug jacket device for different pipe diameters, which comprises an upper shell assembly and a lower shell assembly which are symmetrically arranged; the upper shell assembly and the lower shell assembly are fastened through a locking device, and the upper shell assembly comprises an upper outer shell and a plurality of upper inner shells; the upper inner shell is sleeved in the upper outer shell, and the lower shell assembly comprises a lower outer shell and a plurality of lower inner shells; the lower outer shell is sleeved in the lower inner shell, wherein the upper outer shell is in adaptive connection with the lower outer shell, and the upper inner shell is in adaptive connection with the lower inner shell; the invention designs a novel ice plug jacket device for different pipe diameters, when an ice plug process is implemented on site, the outer shell of the jacket ice plug device is not changed, the inner shell is selected according to the pipe diameter of a maintenance pipeline, and the jacket ice plug jacket device can cope with the conditions of different pipe diameters, so that the maintenance working efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of mechanical assembly, and particularly relates to a novel ice plug jacket device for different pipe diameters.
Background
In a nuclear power plant or a chemical process system, equipment is failed and needs to be maintained or replaced, the system needs to be isolated, but some equipment of the system cannot be isolated or the equipment is isolated, so that the system cannot be isolated; meanwhile, due to the reasons of economy or safety and the like, the difficulty in evacuating the medium in the pipe is high or the operation requirement is difficult to meet, and under the condition, the adoption of the ice plug for system isolation is a very feasible method.
The ice plug technology is firstly appeared in the western national overhaul field at the end of the 20 th century, is widely applied to enterprises such as petrifaction enterprises, electric power enterprises and the like at present, and a plurality of nuclear power plants in China also begin to apply the technology.
The ice plug technology is characterized in that a refrigerant is introduced into an ice plug jacket, and the refrigerant absorbs heat through phase change of the refrigerant, so that a medium in a pipeline at the ice plug jacket is frozen to form an ice column capable of bearing a certain pressure, and therefore, the pipeline is temporarily isolated, and maintenance work is carried out under the condition that other pipelines are not affected. When nuclear power, petroleum and chemical pipelines are overhauled, the shutdown time of the pipelines directly influences the benefits of enterprises, so that the maintenance needs to be completed rapidly under the working conditions of different pipe diameters.
The common ice plug jacket is generally two symmetrical metal semi-cylinders, has a simple structure, needs to be replaced under the condition of facing different pipe diameters, and cannot flexibly cope with complex working conditions; in addition, in practical application, the inner wall of the jacket can not be in close contact with the outer wall of the pipeline, air exists between gaps, and then the heat transfer efficiency between the jacket and the pipeline is low, so that the loss of liquid nitrogen dosage is serious, the time of an ice plug process can be prolonged, and the influence of long-time low temperature on pipeline materials is large.
Therefore, a novel ice plug jacket device for different pipe diameters needs to be designed, the heat exchange rate between the jacket and the pipe wall is increased, the ice plug process efficiency is improved, and the liquid nitrogen cost is saved.
In view of the above technical problems, it is desirable to improve the same.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a novel ice plug jacket device which has simple structure and ingenious design and is used for different pipe diameters; the technical problems that an existing jacket cannot cope with working conditions of variable pipe diameters, heat transfer efficiency is low, and liquid nitrogen loss is serious are solved.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a novel ice plug jacket device for different pipe diameters comprises an upper shell assembly and a lower shell assembly which are symmetrically arranged; the upper shell assembly and the lower shell assembly are fastened through a locking device, and the upper shell assembly comprises an upper outer shell and a plurality of upper inner shells; the upper inner shell is sleeved in the upper outer shell, and the lower shell assembly comprises a lower outer shell and a plurality of lower inner shells; the lower outer shell is sleeved in the lower inner shell, wherein the upper outer shell is in adaptive connection with the lower outer shell, and the upper inner shell is in adaptive connection with the lower inner shell.
As a preferable scheme of the present invention, upper mounting grooves for fixing with the upper inner housing are formed at both ends of the inner side of the upper outer housing; be convenient for both and the assembly of corresponding interior casing and play sealed effect, two the shell body both ends all are equipped with the bolt hole, are used for fixing.
As a preferred scheme of the present invention, the locking device includes an upper connecting plate disposed on both sides of the upper housing and a lower connecting plate disposed on both sides of the lower housing, the upper connecting plate and the lower connecting plate are attached to each other, a plurality of bolt holes are disposed in the upper connecting plate and the lower connecting plate along the length direction thereof, and bolts are inserted into the bolt holes for fastening.
As a preferred scheme of the invention, the upper outer shell is fixedly connected with the upper connecting plate and integrally formed; the lower outer shell is fixedly connected with the lower connecting plate and integrally formed; and lower mounting grooves used for being fixed with the lower inner shell are formed at two ends of the inner side of the lower outer shell.
As a preferred scheme of the invention, the upper outer shell and the lower outer shell are symmetrical semi-cylinders and are in C-shaped structures, the number of the upper outer shell and the number of the lower outer shells are respectively one, and the two outer shells are placed in a mirror symmetry mode.
As a preferred scheme of the invention, the upper inner shell and the lower inner shell are symmetrical semi-cylinders and are in a C-shaped structure; wherein, the quantity of going up interior casing and interior casing down is a plurality of, matches with the pipe diameter.
In a preferred embodiment of the present invention, the upper end plate is disposed on both sides of the upper inner casing, the upper end plate is provided with an upper weir plate fixed to the upper outer casing for assembling with the outer casing, and the inner surfaces of the upper end plate and the upper outer casing are provided with spiral grooves for introducing a heat transfer agent to improve the heat transfer efficiency between the jacket and the pipe, and the upper end plate on one side is provided with a liquid nitrogen inlet.
In a preferred embodiment of the present invention, the upper inner housing is internally provided with an upper spiral groove for conducting a heat transfer agent.
As a preferred scheme of the invention, both sides of the lower inner shell are provided with lower end plates, the lower end plates are provided with lower weir plates fixed with the lower outer shell, and the lower end plate on one side is provided with a liquid nitrogen outlet; the liquid nitrogen inlet and the liquid nitrogen outlet are respectively positioned on the outer sides of the end plates of the upper inner shell and the lower inner shell and are centrosymmetric, so that liquid nitrogen flows in from a low position and flows out from a high position, the heat exchange time is prolonged, and the using amount of the liquid nitrogen is reduced.
In a preferred embodiment of the present invention, the lower inner housing has a lower spiral groove for conducting a heat transfer agent.
The invention has the beneficial effects that:
1. the invention designs a novel ice plug jacket device for different pipe diameters, when an ice plug process is implemented on site, the outer shell of the jacket ice plug device is not changed, the inner shell is selected according to the pipe diameter of a maintenance pipeline, and the jacket ice plug jacket device can cope with the conditions of different pipe diameters, so that the maintenance working efficiency is improved.
2. The inner wall of the inner shell is provided with the spiral groove for introducing the heat-conducting agent, so that the heat transfer efficiency of the jacket and the pipeline can be increased, the consumption of liquid nitrogen is reduced, and the cost is saved.
Drawings
Fig. 1 is a schematic view of a novel ice plug jacket device for different pipe diameters according to an embodiment of the invention.
FIG. 2 is a schematic view of the overall apparatus structure of an ice plug jacket according to an embodiment of the present invention.
Fig. 3 is a sectional view (one) of an ice plug jacket integrated device according to an embodiment of the present invention.
FIG. 4 is a sectional view of the ice plug jacket assembly according to the second embodiment of the present invention.
Fig. 5 is a front view of an upper outer housing of an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of the lower outer housing according to the embodiment of the present invention.
Fig. 7 is a schematic structural view of an upper inner case according to an embodiment of the present invention.
Fig. 8 is a structural view of the lower inner case according to the embodiment of the present invention.
Reference numbers in the figures: go up outer casing 1, go up inner casing 2, lower inner casing 3, lower outer casing 4, bolt hole 5 goes up mounting groove 11, upper end plate 21, goes up weir plate 22, liquid nitrogen import 23, goes up helicla flute 24, lower end plate 31, weir plate 32 down, liquid nitrogen export 33, helicla flute 34 down, lower mounting groove 41.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings.
The embodiment is as follows:
the refrigerants commonly used in the ice plug process are generally liquid nitrogen and liquid carbon dioxide, namely a liquid nitrogen method and a dry ice method; liquid nitrogen is generally used for larger diameter (2 "-16") pipes, and dry ice is generally used for smaller diameter pipes (2 ") and tubes. There are three prerequisites for making ice plugs on system pipes: (1) the temperature of the system medium is lower than 55 ℃; (2) the flow rate of the fluid in the pipeline must be zero or close to zero; (3) the pipeline needs to be filled with water.
The invention provides a novel ice plug jacket device for different pipe diameters, which comprises an upper shell assembly and a lower shell assembly which are symmetrically arranged as shown in figures 1-4; the upper shell assembly and the lower shell assembly are fastened through a locking device, and the upper shell assembly comprises an upper outer shell 1 and a plurality of upper inner shells 2; the upper inner shell 2 is sleeved in the upper outer shell 1, and the lower shell assembly comprises a lower outer shell 4 and a plurality of lower inner shells 3; the lower outer shell 4 is sleeved in the lower inner shell 3, wherein the upper outer shell 1 is in adaptive connection with the lower outer shell 4, and the upper inner shell 2 is in adaptive connection with the lower inner shell 3; the upper outer shell 1 and the lower outer shell 4 are in mirror symmetry, so that assembly is facilitated.
The invention designs a novel ice plug jacket device for different pipe diameters, when an ice plug process is implemented on site, the outer shell of the jacket ice plug device is not changed, the inner shell is selected according to the pipe diameter of a maintenance pipeline, and the jacket ice plug jacket device can cope with the conditions of different pipe diameters, so that the maintenance working efficiency is improved.
As shown in fig. 5, bolt holes 5 for connecting with the lower outer shell 4 are provided on both sides of the upper outer shell 1, and upper mounting grooves 11 for fixing with the upper inner shell 2 are respectively provided on both ends of the inner side of the upper outer shell 1, so that the inner and outer shells are connected and matched on one hand, and the liquid nitrogen is sealed on the other hand.
Specifically, locking device is including laying the upper junction plate of 1 both sides of last shell body and laying the lower connecting plate of shell body 4 both sides down, and upper junction plate and lower connecting plate are laminated each other, and a plurality of bolt holes 5 have been laid along its length direction to upper junction plate and lower connecting plate, insert the bolt-up in bolt hole 5.
As shown in fig. 6, bolt holes 5 for connecting with the upper outer shell 1 are formed on both sides of the lower outer shell 4, and lower mounting grooves 41 for fixing with the lower inner shell 3 are formed on both inner ends of the lower outer shell 4, so that the inner and outer shells are connected and matched on one hand, and the liquid nitrogen is sealed on the other hand.
The upper outer shell 1 is fixedly connected with an upper connecting plate and integrally formed; the lower outer shell 4 is fixedly connected with the lower connecting plate and integrally formed; the structural strength and the integral firmness of the whole upper outer shell 1 and the lower outer shell 4 are improved, and the use safety is further ensured.
As shown in fig. 7, upper end plates 21 are arranged on both sides of the upper inner shell 2, an upper weir plate 22 fixed with the upper outer shell 1 is arranged on the upper end plate 21, a liquid nitrogen inlet 23 is arranged on the upper end plate 21 on one side, and an upper spiral groove 24 for conducting a heat conducting agent is arranged inside the upper inner shell 2, so as to enhance the heat transfer between the jacket and the pipeline.
As shown in fig. 8, lower end plates 31 are disposed on both sides of the lower inner shell 3, a lower weir plate 32 fixed to the lower outer shell 4 is disposed on the lower end plate 31, a liquid nitrogen outlet 33 is disposed on the lower end plate 31 on one side, and a lower spiral groove 34 for introducing a heat conducting agent is disposed inside the lower inner shell 3, so as to enhance heat transfer between the jacket and the pipe.
The upper outer shell 1 and the lower outer shell 4 are symmetrical semi-cylinders and are in C-shaped structures, the number of the upper outer shell and the number of the lower outer shell are respectively one, and the two outer shells are arranged in a mirror symmetry manner; go up the shell body with the inner wall both sides of shell body all have the fluting down, be convenient for both and the assembly of corresponding interior casing and play sealed effect, two the shell body both ends all are equipped with the bolt hole, are used for fixing.
The upper inner shell 2 and the lower inner shell 3 are symmetrical semi-cylinders and are of a C-shaped structure. Go up interior casing 2 with 3 quantity of interior casings down are supporting with the pipe diameter, go up interior casing with interior casing down is equipped with the weir in its both end board department to with the shell body assembly, and the helicla flute is opened to both internal surfaces for lead to the heat-transfer agent, so that improve the heat transfer efficiency between pressing from both sides cover and the pipeline.
This novel ice plug presss from both sides cover device has realized being suitable for the operating mode of multiple pipe diameter. Firstly determining the size and model of a pipeline to which the ice plug process is applied, then selecting a matched jacket inner shell according to the size, wherein the jacket outer shell does not need to be changed, selecting the model, firstly assembling two inner shells, secondly assembling the two outer shells, matching between a groove of the outer shell and a weir of the inner shell to be assembled, then completely fixing the ice plug jacket on the pipeline through a bolt, and finally pumping a heat-conducting agent into the bolt groove. Therefore, the whole device completes the whole process of selecting the type, assembling and adding the heat-conducting agent.
The invention provides certain convenience for implementing the ice plug process, improves the heat transfer efficiency of the ice plug jacket and the pipe wall, reduces the time for implementing the ice plug process and provides a design idea for the jacket design development of the ice plug technology.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the reference numerals in the figures are used more here: the terms upper outer shell 1, upper inner shell 2, lower inner shell 3, lower outer shell 4, bolt holes 5, upper mounting groove 11, upper end plate 21, upper weir plate 22, liquid nitrogen inlet 23, upper spiral groove 24, lower end plate 31, lower weir plate 32, liquid nitrogen outlet 33, lower spiral groove 34, lower mounting groove 41, etc., but do not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to the spirit of the present invention.
Claims (10)
1. The utility model provides a novel ice plug jacket device for different pipe diameters which characterized in that: comprises an upper shell component and a lower shell component which are symmetrically arranged; the upper shell assembly and the lower shell assembly are fastened through a locking device, and the upper shell assembly comprises an upper outer shell (1) and a plurality of upper inner shells (2); the upper inner shell (2) is sleeved in the upper outer shell (1), and the lower shell assembly comprises a lower outer shell (4) and a plurality of lower inner shells (3); the lower outer shell (4) is sleeved in the lower inner shell (3), wherein the upper outer shell (1) is in adaptive connection with the lower outer shell (4), and the upper inner shell (2) is in adaptive connection with the lower inner shell (3).
2. A novel ice plug jacket device for different pipe diameters as claimed in claim 1, wherein: and upper mounting grooves (11) for fixing the upper inner shell (2) are formed at two ends of the inner side of the upper outer shell (1).
3. A novel ice plug jacket device for different pipe diameters as claimed in claim 1, wherein: locking device is including laying the upper junction plate of last shell body (1) both sides and laying the lower connecting plate of shell body (4) both sides down, and upper junction plate and lower connecting plate are laminated each other, and a plurality of bolt holes (5) have been laid along its length direction with lower connecting plate to the upper junction plate, insert the bolt fastening in bolt hole (5).
4. A novel ice plug jacket device for different pipe diameters as claimed in claim 3, wherein: the upper outer shell (1) is fixedly connected with the upper connecting plate and is integrally formed; the lower outer shell (4) is fixedly connected with the lower connecting plate and is integrally formed; and lower mounting grooves (41) for fixing the lower inner shell (3) are formed at two ends of the inner side of the lower outer shell (4).
5. A novel ice plug jacket device for different pipe diameters as claimed in claim 4, wherein: go up shell body (1) and shell body (4) down for the symmetry semicircle tube, be C font structure, quantity respectively is one, and two shell body mirror symmetry place.
6. A new ice plug jacketing device for different pipe diameters according to claim 1 wherein: the upper inner shell (2) and the lower inner shell (3) are symmetrical semi-cylinders and are of C-shaped structures.
7. A novel ice plug jacket device for different pipe diameters as claimed in claim 6, wherein: the upper end plate (21) is arranged on two sides of the upper inner shell (2), the upper end plate (21) is provided with an upper weir plate (22) fixed with the upper outer shell (1), and the upper end plate (21) on one side is provided with a liquid nitrogen inlet (23).
8. A novel ice plug jacket device for different pipe diameters as claimed in claim 7, wherein: an upper spiral groove (24) for leading in heat conducting agent is arranged in the upper inner shell (2).
9. A new ice plug jacketing device for different pipe diameters according to claim 1 wherein: lower end plates (31) are arranged on two sides of the lower inner shell (3), a lower weir plate (32) fixed with the lower outer shell (4) is arranged on the lower end plate (31), and a liquid nitrogen outlet (33) is formed in the lower end plate (31) on one side.
10. A new ice plug jacketing device for different pipe diameters in accordance with claim 9 wherein: and a lower spiral groove (34) for leading in a heat conducting agent is arranged in the lower inner shell (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210426653.0A CN114754219B (en) | 2022-04-22 | 2022-04-22 | Novel ice plug jacket device for different pipe diameters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210426653.0A CN114754219B (en) | 2022-04-22 | 2022-04-22 | Novel ice plug jacket device for different pipe diameters |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114754219A true CN114754219A (en) | 2022-07-15 |
| CN114754219B CN114754219B (en) | 2023-11-10 |
Family
ID=82331765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210426653.0A Active CN114754219B (en) | 2022-04-22 | 2022-04-22 | Novel ice plug jacket device for different pipe diameters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114754219B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1038181A (en) * | 1996-07-25 | 1998-02-13 | Mitsubishi Heavy Ind Ltd | Ice plug forming device for vertical pipe |
| CN205104243U (en) * | 2015-11-10 | 2016-03-23 | 大亚湾核电运营管理有限责任公司 | Stifled isolation structure of online ice of nuclear power station pipeline |
| CN110440085A (en) * | 2019-08-13 | 2019-11-12 | 西南石油大学 | A kind of temporary block apparatus of gathering line liquid nitrogen cryogenics suitable for multi-pipe-diameter |
| CN110748750A (en) * | 2019-10-30 | 2020-02-04 | 无锡纽思铁科能源科技有限公司 | Double-layer ice plug jacket |
| CN212400310U (en) * | 2020-02-28 | 2021-01-26 | 白银有色长通电线电缆有限责任公司 | Disc cast aluminum heating ring |
| CN216260272U (en) * | 2021-11-26 | 2022-04-12 | 圣奥化学科技有限公司 | Jacket heat preservation in equipment receives groove |
-
2022
- 2022-04-22 CN CN202210426653.0A patent/CN114754219B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1038181A (en) * | 1996-07-25 | 1998-02-13 | Mitsubishi Heavy Ind Ltd | Ice plug forming device for vertical pipe |
| CN205104243U (en) * | 2015-11-10 | 2016-03-23 | 大亚湾核电运营管理有限责任公司 | Stifled isolation structure of online ice of nuclear power station pipeline |
| CN110440085A (en) * | 2019-08-13 | 2019-11-12 | 西南石油大学 | A kind of temporary block apparatus of gathering line liquid nitrogen cryogenics suitable for multi-pipe-diameter |
| CN110748750A (en) * | 2019-10-30 | 2020-02-04 | 无锡纽思铁科能源科技有限公司 | Double-layer ice plug jacket |
| CN212400310U (en) * | 2020-02-28 | 2021-01-26 | 白银有色长通电线电缆有限责任公司 | Disc cast aluminum heating ring |
| CN216260272U (en) * | 2021-11-26 | 2022-04-12 | 圣奥化学科技有限公司 | Jacket heat preservation in equipment receives groove |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114754219B (en) | 2023-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201032427Y (en) | Winding type screwed conduit casing heat exchanger | |
| CN201000291Y (en) | Casing heat exchanger | |
| CN103807571A (en) | Heat-preservation device of photoresist pipeline casing pipe | |
| CN201237465Y (en) | Oscillatory flow heat pipe exchanger | |
| CN114754219A (en) | Novel ice plug jacket device for different pipe diameters | |
| CN209069064U (en) | A kind of gas-gas heat exchanger | |
| CN202119310U (en) | Heat exchange tube and waste heat recovery device with the same | |
| CN206274229U (en) | A kind of New enamel formula radial heat exchanger | |
| CN212362921U (en) | Internal leakage prevention tubular heat exchanger | |
| CN207688956U (en) | A kind of hot and cold water meter of antifreeze detachable LXS series rotary wind types | |
| CN204007229U (en) | The high-efficiency evaporator with natural circulation | |
| CN110966878A (en) | Heat exchanger | |
| CN202229479U (en) | Evaporator provided with elliptical flat spiral heat exchange tube | |
| CN219083391U (en) | External heat tracing device | |
| CN202216589U (en) | Heat exchanger applying rotating arc heat exchange tubes | |
| CN216584815U (en) | Hexachloroethane separation and purification equipment | |
| CN211782892U (en) | Heat exchanger | |
| CN210198144U (en) | Bypass type spiral heat exchanger | |
| CN209295707U (en) | A kind of air extractor and the heat exchanger with the air extractor | |
| CN112781405B (en) | High-efficient compact heat exchanger of multichannel formula | |
| CN220230162U (en) | Double-tube Cheng Zhengqi heating water bath type gasifier | |
| CN219454782U (en) | Shell-and-plate heat exchanger | |
| CN219301361U (en) | Capillary tube heat exchanger | |
| CN218884729U (en) | Heat exchange unit with heat supply energy-saving structure | |
| CN211451952U (en) | Liquid nitrogen evaporator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |