CN112302712B - Filling pipeline preheating system suitable for mine in alpine region - Google Patents

Filling pipeline preheating system suitable for mine in alpine region Download PDF

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Publication number
CN112302712B
CN112302712B CN202011078722.0A CN202011078722A CN112302712B CN 112302712 B CN112302712 B CN 112302712B CN 202011078722 A CN202011078722 A CN 202011078722A CN 112302712 B CN112302712 B CN 112302712B
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barrel
heat
filling pipe
heating
insulating tank
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CN112302712A (en
Inventor
彭康
上官剑铭
马明辉
沙鸥
周子龙
周亚博
张恒超
尚雪义
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Central South University
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Central South University
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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00Methods or devices for placing filling-up materials in underground workings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L53/00Heating of pipes or pipe systems; Cooling of pipes or pipe systems
    • F16L53/30Heating of pipes or pipe systems
    • F16L53/32Heating of pipes or pipe systems using hot fluids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00Air heaters
    • F24H3/02Air heaters with forced circulation
    • F24H3/04Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/0052Details for air heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/02Casings; Cover lids; Ornamental panels

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pipe Accessories (AREA)

Abstract

The invention provides a filling pipeline preheating system suitable for mines in alpine regions, which comprises a heat-insulating tank barrel, wherein a support barrel communicated with the interior of the heat-insulating tank barrel is arranged on the outer wall of the heat-insulating tank barrel, a pressure monitoring meter and a pressure relief valve communicated with the interior of the support barrel are fixedly connected onto the support barrel, an air inlet filling pipe and an air outlet filling pipe are respectively connected onto two end surfaces of the heat-insulating tank barrel, the other end of the air outlet filling pipe is connected with an underground filling pipe through a splicing pipe, two heaters are hung at the top in the heat-insulating tank barrel, hot air outlets of the two heaters are arranged in opposite directions, each heater comprises a heating barrel body, a hanging beam convenient for hanging the heating barrel body is arranged on the outer wall of the heating barrel body, an exhaust fan is fixedly arranged at the hot air outlet of the heating barrel body, a heating resistance wire is fixedly arranged in the heating barrel body, the exhaust fan and the heating resistance wire are powered by an external power supply, and an upward-lifting type blocking window is tightly and rotatably connected onto the outer wall of the heat-insulating tank barrel. This application can fill before the pipe to underground filling and preheat and prevent frostbite, labour saving and time saving has promoted and has filled efficiency.

Description

Filling pipeline preheating system suitable for mine in alpine region
Technical Field
The invention relates to the technical field of mine goaf filling, in particular to a filling pipeline preheating system suitable for mines in alpine regions.
Background
In mines in alpine regions, the temperature is below zero centigrade for many months throughout the year, the average temperature in winter is about minus 30 ℃, a small amount of accumulated water is stored in the filling pipeline before filling, and the filling pipeline is often frozen to influence production in severe cold winter. The existing filling process has the defects that pipelines are various in flow and complex in layout, and if a filling pipeline is filled under the frozen condition, the internal pressure of the filling pipeline is high due to the fact that the space of the pipeline is reduced and the concentration of filling slurry is set, and finally, the pipeline is broken under the limit bearing condition, and a workshop needs to be replaced and maintained regularly.
Thus, pipeline freeze protection is a very critical task for filling plants, both in terms of production efficiency and efficiency. The inventor of the invention finds that the existing filling pipeline anti-freezing technology is mostly disposable, and generally adopts a method that workers use an air heater to manually blow and heat all pipelines in advance, so that the time and labor are wasted, and the filling efficiency is low.
Disclosure of Invention
The invention provides a filling pipeline preheating system suitable for mines in alpine regions, and aims to solve the technical problems that the existing filling pipeline anti-freezing technology is mostly disposable, generally, workers use an air heater to manually blow and heat all pipelines in advance, time and labor are wasted, and filling efficiency is low.
In order to solve the technical problems, the invention adopts the following technical scheme:
a filling pipeline preheating system suitable for mines in alpine regions comprises a heat-insulating tank barrel, wherein a supporting barrel communicated with the interior of the heat-insulating tank barrel is arranged on the outer wall of the heat-insulating tank barrel, a pressure monitoring meter and a pressure release valve communicated with the interior of the supporting barrel are fixedly connected to the supporting barrel, sealing gaskets are arranged between the supporting barrel and the pressure monitoring meter as well as between the pressure release valve, an air inlet filling pipe is fixedly connected to one end face of the heat-insulating tank barrel, an air outlet filling pipe is fixedly connected to the other end face of the heat-insulating tank barrel, a splicing pipe is fixedly connected to the other end of the air outlet filling pipe, the other end of the splicing pipe is connected with an underground filling pipe, two heaters are hung at the top of the heat-insulating tank barrel and are arranged in parallel, the arrangement directions of hot air outlets are opposite, each heater comprises a heating barrel body, and a hanging beam, the heating barrel is characterized in that an exhaust fan is fixedly mounted at a hot air exhaust port of the heating barrel body, a heating resistance wire is fixedly arranged in the heating barrel body, the exhaust fan and the heating resistance wire are powered by an external power supply, and an upward-lifting type blocking window is tightly and rotatably connected to the outer wall of the heat-preserving tank barrel.
Compared with the prior art, when the filling pipeline preheating system suitable for the mine in the alpine region works, firstly, the inlet of the air inlet filling pipe is connected with the existing air compressor through the external preheating air pipe, the other end of the splicing pipe is connected with the underground filling pipe, then the air compressor applies air flow into the air inlet filling pipe through the preheating air pipe, the air flow enters the insulating tank barrel and the heating barrel body through the air inlet filling pipe, is heated by the heating resistance wire and then is discharged through the exhaust fan, so that the effect of heating the air flow is achieved, the heated air flow flows into the underground filling pipe after passing through the splicing pipe through the air outlet filling pipe, the purpose of heating and freezing prevention of the underground filling pipe is further achieved, the preheating work before filling the underground filling pipe is achieved by using the insulating tank barrel and the heater, the operation efficiency of filling equipment is improved, the service life of the filling pipeline is prolonged, and therefore, compared with the existing manual blowing heating and freezing prevention technology, not only saves time and labor, but also can improve the filling efficiency. Meanwhile, the pressure monitoring meter is used for monitoring and displaying the air pressure in the heat-insulating tank barrel, and the pressure relief valve can be used for automatically relieving pressure under the condition of ultrahigh pressure, so that the normal work of the heat-insulating tank barrel is ensured. In addition, two heaters with hot air exhaust openings arranged in opposite directions are arranged in the heat-insulating tank barrel, so that heating and freezing prevention of the ground surface and underground filling pipelines can be efficiently realized.
Further, the heat-preserving tank barrel is a hollow cylinder, the length of the hollow cylinder is 1.5m, and the diameter of the end face of the hollow cylinder is 1.3 m.
Furthermore, a heat insulation layer is arranged on the inner wall of the heat-preservation tank barrel.
Further, the air inlet filling pipe and the air outlet filling pipe are fixedly connected to the centers of the two end faces of the heat-preservation tank barrel, and the diameters of the air inlet filling pipe and the air outlet filling pipe are 120 mm.
Furthermore, two pressure relief short pipes are fixedly connected to the air outlet filling pipe.
Furthermore, two ends of the splicing pipe are fixedly connected with the air outlet filling pipe and the underground filling pipe through flanges.
Furthermore, each heater is hung on the inner top of the heat-preservation tank through two hanging hooks with the interval of 20 cm.
Further, hang the lifting hook including leading chain and crotch, the upper end of leading the chain is hung with the interior top of holding vessel bucket and is connected, the lower extreme of leading the chain is connected with the upper end of crotch, the lower extreme and the heating staving of crotch articulate.
Furthermore, three heating resistance wires are arranged in the heating barrel body side by side at equal intervals.
Further, the heater still includes high temperature power-off protection device and the thermostatic control ware that sets up on the heating staving.
Drawings
Fig. 1 is a schematic structural diagram of a filling pipeline preheating system suitable for mines in alpine regions.
Fig. 2 is an enlarged schematic structural diagram of a heater provided by the present invention.
Fig. 3 is a schematic view of a connection amplification structure of the pressure monitor and the pressure relief valve provided by the invention and the branch cylinder.
In the figure, 1, a heat-preservation tank barrel; 11. supporting a cylinder; 12. a window is blocked; 2. a pressure monitor; 3. a pressure relief valve; 4. an intake filling pipe; 5. an air outlet filling pipe; 6. splicing the tubes; 7. a heater; 71. heating the barrel body; 72. hanging a beam; 73. an exhaust fan; 74. heating resistance wires; 8. a short pressure relief pipe; 9. a flange plate; 10. hanging a lifting hook; 101. guiding a chain; 102. hooking; 100. and (4) underground filling pipes.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
In the description of the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 3, the present invention provides a filling pipeline preheating system suitable for mines in alpine regions, including a thermal insulation tank barrel 1, a support barrel 11 communicated with the interior of the thermal insulation tank barrel is arranged on the outer wall of the thermal insulation tank barrel 1, a pressure monitor 2 and a pressure release valve 3 communicated with the interior of the support barrel 11 are fixedly connected to the support barrel 11 through bolts, etc., so that the air pressure in the thermal insulation tank barrel 1 can be displayed in real time in a numerical form through the pressure monitor 2, when the air pressure in the thermal insulation tank barrel 1 is ultrahigh, the pressure can be automatically released through the pressure release valve 3, a sealing gasket (marked in the figure) is arranged between the support barrel 11 and the pressure monitor 2 and the pressure release valve 3, so as to avoid unnecessary leakage of the air flow in the thermal insulation tank barrel 1, an air inlet filling pipe 4 is fixedly connected to one end face of the thermal insulation tank barrel 1, an air outlet filling pipe 5 is fixedly connected to the other end face of the thermal insulation tank barrel 1, the air inlet filling pipe 4 and the air outlet filling pipe 5 can be fixedly connected to two end faces of the heat-insulating tank barrel 1 in a welding mode, the other end of the air outlet filling pipe 5 is fixedly connected with a splicing pipe 6, the other end of the splicing pipe 6 is connected with an underground filling pipe 100, two heaters 7 are hung at the inner top of the heat-insulating tank barrel 1, the two heaters 7 are arranged in parallel, the arrangement directions of hot air outlets are opposite, each heater 7 comprises a heating tank body 71, a hanging beam 72 convenient for hanging the heating tank body is arranged on the outer wall of the heating tank body 71, namely, the whole heater 7 can be hung at the inner top of the heat-insulating tank barrel 1 through the hanging beam 72, an exhaust fan 73 is fixedly installed at the hot air outlet of the heating tank body 71, a heating resistance wire 74 is fixedly arranged in the heating tank body 71, and the exhaust fan 73 and the heating resistance wire 74 are powered by an external power supply, the outer wall of the heat-insulating tank barrel 1 is closely and rotatably connected with an upward-lifting type baffle window 12, so that when the heater 7 needs to be installed, only the lower edge of the baffle window 12 needs to be lifted upwards, and after the two heaters 7 are installed in the heat-insulating tank barrel 1, the lower baffle window 12 is placed.
Compared with the prior art, when the filling pipeline preheating system suitable for the mine in the alpine region works, firstly, the inlet of the air inlet filling pipe is connected with the existing air compressor through the external preheating air pipe, the other end of the splicing pipe is connected with the underground filling pipe, then the air compressor applies air flow into the air inlet filling pipe through the preheating air pipe, the air flow enters the insulating tank barrel and the heating barrel body through the air inlet filling pipe, is heated by the heating resistance wire and then is discharged through the exhaust fan, so that the effect of heating the air flow is achieved, the heated air flow flows into the underground filling pipe after passing through the splicing pipe through the air outlet filling pipe, the purpose of heating and freezing prevention of the underground filling pipe is further achieved, the preheating work before filling the underground filling pipe is achieved by using the insulating tank barrel and the heater, the operation efficiency of filling equipment is improved, the service life of the filling pipeline is prolonged, and therefore, compared with the existing manual blowing heating and freezing prevention technology, not only saves time and labor, but also can improve the filling efficiency. Meanwhile, the pressure monitoring meter is used for monitoring and displaying the air pressure in the heat-insulating tank barrel, and the pressure relief valve can be used for automatically relieving pressure under the condition of ultrahigh pressure, so that the normal work of the heat-insulating tank barrel is ensured. In addition, two heaters with hot air exhaust openings arranged in opposite directions are arranged in the heat-insulating tank barrel, so that heating and freezing prevention of the ground surface and underground filling pipelines can be efficiently realized.
As a specific embodiment, the heat-insulating tank barrel 1 is a hollow cylinder, the length of the hollow cylinder is 1.5m, and the diameter of the end face of the hollow cylinder is 1.3m, so that the heat-insulating tank barrel 1 can be easily moved, the installation is convenient, the space utilization rate is high, and the heaters 7 placed in two opposite directions can be reasonably accommodated.
As a specific embodiment, the inner wall of the heat-insulating tank barrel 1 is provided with a heat-insulating layer, so that heat insulation can be realized, and energy consumption can be reduced.
As a specific embodiment, the air inlet filling pipe 4 and the air outlet filling pipe 5 are fixedly connected to the centers of two end faces of the heat-insulating tank barrel 1, and the diameters of the air inlet filling pipe 4 and the air outlet filling pipe 5 are 120mm, so that the construction and installation can be easy, and the discharge efficiency of hot air in the heat-insulating tank barrel 1 can be improved to a certain extent; the diameter of the gas inlet and outlet filling pipe is 120mm, the diameter of the gas inlet and outlet filling pipe is the diameter of a conventional pipeline, the gas inlet and outlet filling pipe is easy to obtain in a filling workshop, and multiple tests in the early stage prove that the hot gas discharge rate in the pipeline under the diameter is reasonable, and the hot gas utilization rate is high.
As a specific embodiment, please refer to fig. 1, two pressure relief short pipes 8 are fixedly connected to the gas outlet filling pipe 5, so that when the pressure relief valve 3 fails and cannot work normally, the pressure relief short pipe 8 can be opened manually to relieve pressure, so as to ensure that the pressure difference inside the heat-insulating tank barrel 1 is balanced.
As a specific embodiment, please refer to fig. 1, two ends of the splicing pipe 6 are fixedly connected with the gas outlet filling pipe 5 and the underground filling pipe 100 through flanges 9, thereby ensuring that the splicing pipe 6 is firmly connected with the gas outlet filling pipe 5 and the underground filling pipe 100.
As a specific embodiment, each heater 7 is hung on the inner top of the heat-preservation tank 1 through two hanging hooks 10 with an interval of 20cm, so that the two heaters 7 need four hanging hooks 10 for hanging, and the four hanging hooks 10 are arranged in a rectangular shape, so that the two heaters 7 are respectively installed in a forward and reverse order.
As a preferred embodiment, referring to fig. 1, the hanging hook 10 includes a guide chain 101 and a hook 102, wherein an upper end of the guide chain 101 is hung on an inner top of the thermal insulation tank 1, a lower end of the guide chain 101 is connected to an upper end of the hook 102, and a lower end of the hook 102 is hung on the heating tank body 71. Of course, those skilled in the art can implement other suspension hook structures based on the aforementioned suspension hook 10 structure.
As a specific example, referring to fig. 1 and 2, three heating resistance wires 74 are arranged in the heating barrel 71 side by side at equal intervals, so that the heating rate can be increased.
As a specific embodiment, the heater 7 further comprises a high-temperature power-off protection device and a thermostatic controller (not shown) arranged on the heating barrel body 71, so that on one hand, when the temperature in the heating barrel body 71 is abnormally increased, the heating of the heating resistance wire 74 can be cut off by the high-temperature power-off protection device, so as to avoid fire hazard; on the other hand, when the temperature in the heating barrel body 71 reaches the set temperature through the heating resistance wire 74, the room temperature in the heating barrel body 71 can be controlled through the constant temperature controller, so that the electric energy is saved to the maximum extent. The high-temperature power-off protection device and the thermostatic controller can be realized by adopting the prior art, and therefore, the details are not repeated.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims (10)

1. The filling pipeline preheating system is suitable for mines in alpine regions and is characterized by comprising a heat-insulating tank barrel (1), wherein a supporting barrel (11) communicated with the inside of the heat-insulating tank barrel is arranged on the outer wall of the heat-insulating tank barrel (1), a pressure monitoring meter (2) and a pressure release valve (3) which are communicated with the inside of the supporting barrel are fixedly connected to the supporting barrel (11), sealing gaskets are respectively arranged between the supporting barrel (11) and the pressure monitoring meter (2) and the pressure release valve (3), an air inlet filling pipe (4) is fixedly connected to one end face of the heat-insulating tank barrel (1), an air outlet filling pipe (5) is fixedly connected to the other end face of the heat-insulating tank barrel (1), a splicing pipe (6) is fixedly connected to the other end of the air outlet filling pipe (5), two heaters (7) are hung at the top of the heat-insulating tank barrel (1), two heaters (7) set up side by side and steam row mouth arranges opposite direction, heater (7) are including heating staving (71), be equipped with hanging beam (72) that the heating staving of being convenient for hung on the outer wall of heating staving (71), the steam row mouth department fixed mounting of heating staving (71) has exhaust fan (73), the inside of heating staving (71) is fixed and is provided with heating resistor silk (74), exhaust fan (73) and heating resistor silk (74) are supplied power by external power supply, closely rotatable connection has lift formula fender window (12) on the outer wall of holding tank bucket (1).
2. The filling pipe preheating system suitable for the alpine region mine according to claim 1, wherein the heat-insulating tank barrel (1) is a hollow cylinder, the length of the hollow cylinder is 1.5m, and the diameter of the end face of the hollow cylinder is 1.3 m.
3. The filling pipeline preheating system suitable for the mine in the alpine region according to claim 1, wherein a heat insulation layer is arranged on the inner wall of the heat-insulating tank barrel (1).
4. The filling pipeline preheating system suitable for the mine in the alpine region according to claim 1, wherein the inlet filling pipe (4) and the outlet filling pipe (5) are fixedly connected to centers of two end faces of the heat-insulating tank barrel (1), and the diameters of the inlet filling pipe (4) and the outlet filling pipe (5) are 120 mm.
5. The filling pipeline preheating system suitable for the mine in the alpine region according to claim 1, wherein two pressure relief short pipes (8) are fixedly connected to the gas outlet filling pipe (5).
6. The filling pipe preheating system suitable for the mine in the alpine region according to claim 1, wherein two ends of the splicing pipe (6) are fixedly connected with the gas outlet filling pipe (5) and the underground filling pipe (100) through flanges (9).
7. The filling pipe preheating system applicable to the mine in the alpine region according to claim 1, wherein each heater (7) is hung on the inner top of the heat-insulating tank barrel (1) through two hanging hooks (10) with a spacing of 20 cm.
8. The filling pipe preheating system for the alpine region mine according to claim 7, wherein the hanging hook (10) comprises a guide chain (101) and a hook (102), an upper end of the guide chain (101) is hung on an inner top of the thermal insulation tank barrel (1), a lower end of the guide chain (101) is connected with an upper end of the hook (102), and a lower end of the hook (102) is hung on the heating barrel body (71).
9. The filling pipe preheating system suitable for the mine in the alpine region according to claim 1, wherein three heating resistance wires (74) are arranged in the heating barrel body (71) side by side at equal intervals.
10. The filling pipe preheating system suitable for the alpine region mine according to claim 1 or 9, wherein the heater (7) further comprises a high-temperature power-off protection device and a constant temperature controller which are arranged on the heating barrel body (71).
CN202011078722.0A 2020-10-10 2020-10-10 Filling pipeline preheating system suitable for mine in alpine region Active CN112302712B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114294569A (en) * 2021-12-21 2022-04-08 锡林郭勒盟山金阿尔哈达矿业有限公司 High-pressure warm air preheating device for long-distance pipeline in alpine region

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Publication number Priority date Publication date Assignee Title
SU981629A1 (en) * 1981-04-10 1982-12-15 за вители Акбаев, В.Н, Габченко, В.А. Мосунов, Г.М. Орлов: и А.З. Толумбаев Stream switch
CN205117402U (en) * 2015-11-24 2016-03-30 寇春霞 Novel colliery paste filling pipe -line system
CN105570595A (en) * 2014-10-08 2016-05-11 西安汇科地质技术服务有限责任公司 Coalmine vent pipeline heater
CN206875026U (en) * 2017-03-28 2018-01-12 熊小艳 A kind of heater for oil pipeline
CN109140056A (en) * 2017-06-16 2019-01-04 淄博华源矿业有限公司 Antifreeze filling pipeline
CN208858399U (en) * 2018-09-30 2019-05-14 深圳市颐泰中和科技有限公司 A kind of efficient Mine Tailings filling system
CN111005758A (en) * 2019-12-27 2020-04-14 胡威 Hydraulic power generation heating water filtering device and method for mine filling pipe
CN211116114U (en) * 2019-12-10 2020-07-28 淮北市东鑫矿业有限公司 Anti-freezing and heat-insulating device of vertical sand silo

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU981629A1 (en) * 1981-04-10 1982-12-15 за вители Акбаев, В.Н, Габченко, В.А. Мосунов, Г.М. Орлов: и А.З. Толумбаев Stream switch
CN105570595A (en) * 2014-10-08 2016-05-11 西安汇科地质技术服务有限责任公司 Coalmine vent pipeline heater
CN205117402U (en) * 2015-11-24 2016-03-30 寇春霞 Novel colliery paste filling pipe -line system
CN206875026U (en) * 2017-03-28 2018-01-12 熊小艳 A kind of heater for oil pipeline
CN109140056A (en) * 2017-06-16 2019-01-04 淄博华源矿业有限公司 Antifreeze filling pipeline
CN208858399U (en) * 2018-09-30 2019-05-14 深圳市颐泰中和科技有限公司 A kind of efficient Mine Tailings filling system
CN211116114U (en) * 2019-12-10 2020-07-28 淮北市东鑫矿业有限公司 Anti-freezing and heat-insulating device of vertical sand silo
CN111005758A (en) * 2019-12-27 2020-04-14 胡威 Hydraulic power generation heating water filtering device and method for mine filling pipe

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