CN116480871A - Heating cylinder and heating box for heating steel-plastic conversion pipe fitting anti-corrosion heat shrinkage sleeve - Google Patents
Heating cylinder and heating box for heating steel-plastic conversion pipe fitting anti-corrosion heat shrinkage sleeve Download PDFInfo
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- CN116480871A CN116480871A CN202310447322.XA CN202310447322A CN116480871A CN 116480871 A CN116480871 A CN 116480871A CN 202310447322 A CN202310447322 A CN 202310447322A CN 116480871 A CN116480871 A CN 116480871A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 154
- 238000005260 corrosion Methods 0.000 title claims abstract description 63
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 46
- 230000017525 heat dissipation Effects 0.000 claims abstract description 72
- 230000001105 regulatory effect Effects 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 11
- 238000009423 ventilation Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005536 corrosion prevention Methods 0.000 abstract description 3
- 238000012797 qualification Methods 0.000 abstract description 2
- 238000005485 electric heating Methods 0.000 description 17
- 239000007789 gas Substances 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- 238000001816 cooling Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000009826 distribution Methods 0.000 description 5
- 230000037303 wrinkles Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910021389 graphene Inorganic materials 0.000 description 3
- 238000009827 uniform distribution Methods 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
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- 239000003513 alkali Substances 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- 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
- F16L53/30—Heating of pipes or pipe systems
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- 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
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- 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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
The invention relates to the field of gas pipeline corrosion prevention, and discloses a heating cylinder for a corrosion-resistant heat shrinkage sleeve of a heating steel-plastic conversion pipe fitting. The heat dissipation device comprises a barrel body, wherein the barrel body is a through cylindrical structural member, the barrel body comprises a shell, heating pipes and a heat dissipation sleeve, the heat dissipation sleeve is sleeved in the shell, a plurality of heating pipes are uniformly arranged between the shell and the heat dissipation sleeve, the shell is provided with an air inlet, and the heat dissipation sleeve is provided with an air outlet. The heating cylinder provided by the invention can uniformly heat the anti-corrosion heat-shrinkable sleeve on the steel-plastic conversion pipe fitting, so that the anti-corrosion heat-shrinkable sleeve is fully and uniformly adhered on the steel-plastic conversion pipe fitting, and the qualification rate, the anti-corrosion effect and the surface quality of a finished product are improved. The invention also relates to a heating box comprising the heating cylinder, and the processing efficiency is improved.
Description
Technical Field
The invention relates to the field of corrosion prevention of gas pipelines, in particular to a heating cylinder and a heating box for heating a steel-plastic conversion pipe fitting for corrosion prevention and heat shrinkage sleeve.
Background
At present, natural gas pipe networks in China and even worldwide are composed of two major types of pipelines, namely underground pipelines and overground pipelines, because the underground environment is corrosive to steel pipes, the underground pipelines are mostly paved by adopting plastic pipes with good corrosion resistance, and overground pipelines are paved by adopting steel pipes because the plastic pipes are easy to age and break due to exposure to the outside air environment, and the steel pipes are also easy to oxidize and corrode, so that the steel pipes also need to be subjected to corrosion resistance treatment. The plastic and steel pipe are two materials with great difference in performance, the gas pipeline belongs to a pressure pipeline, pipelines with different materials cannot be directly connected by using simple threaded connection, gluing, welding and other methods, the underground plastic pipe and the overground steel pipe are required to be connected in a conversion way through a section of steel-plastic conversion pipe fitting, and the steel-plastic conversion pipe fitting is formed by coaxially connecting a section of plastic pipe and a section of steel pipe. In the whole pipe network, most of the steel-plastic conversion pipe fittings need to be buried underground, so that the steel pipe sections need to be subjected to corrosion-resistant treatment.
The anti-corrosion treatment method of the steel-plastic conversion pipe fitting mainly adopts 3PE anti-corrosion, the 3PE anti-corrosion method mainly adopts a thermal shrinkage process, the anti-corrosion thermal shrinkage sleeve is a prepared sleeve, the outer layer of the anti-corrosion thermal shrinkage sleeve is radiation crosslinked polyethylene, and the inner layer of the anti-corrosion thermal shrinkage sleeve is hot melt polyethylene adhesive. When the steel-plastic conversion pipe fitting is processed, firstly, an epoxy powder anti-corrosion layer is coated on the surface of the steel pipe, then, a prefabricated anti-corrosion heat-shrinkable sleeve is sleeved on the steel pipe, when a metal locking ring is arranged at the joint of the steel and the plastic, the metal locking ring is sleeved together by the anti-corrosion heat-shrinkable sleeve, and finally, the anti-corrosion heat-shrinkable sleeve is heated, so that the anti-corrosion heat-shrinkable sleeve is shrunk and is adhered to the steel-plastic conversion pipe fitting through a heated and melted adhesive.
At present, the adopted heating modes of the anti-corrosion heat-shrinkable sleeve are artificial fire baking, electromagnetic heating and infrared heating, and practice shows that the temperature is easy to be uneven in the electromagnetic heating and infrared heating processes, the quality is unstable, the rejection rate is high, the overall efficiency is still lower than the efficiency of the artificial fire baking heating, and the heating modes of the anti-corrosion heat-shrinkable sleeve which are actually adopted by factories at present are not practically applied, so that the heating modes of the anti-corrosion heat-shrinkable sleeve which are actually adopted by factories are mainly the artificial fire baking. The manual fire baking has the following main disadvantages: the uneven heating causes the serious uneven bonding strength of different parts between the heat shrinkage sleeve and the steel pipe; the surface is provided with wrinkles, convex and concave, and the appearance is ugly; an air pocket is easy to form inside, so that the anti-corrosion effect is affected; the temperature control has high requirements on the proficiency of the operation of workers, and the sleeve is easy to burn if carelessly; the rejection rate is very high; safety accidents are easy to occur due to inconvenient open flame operation, burn conditions occur, and great potential safety hazards exist.
Disclosure of Invention
The invention provides a heating cylinder and a heating box for heating an anti-corrosion heat shrinkage sleeve of a steel-plastic conversion pipe fitting, and aims to uniformly heat the anti-corrosion heat shrinkage sleeve on the steel-plastic conversion pipe fitting, so that the anti-corrosion heat shrinkage sleeve is fully and uniformly adhered to the steel-plastic conversion pipe fitting, the qualification rate of a finished product is improved, the working efficiency and the anti-corrosion effect are improved, and the appearance quality is ensured.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the invention discloses a heating cylinder for heating an anti-corrosion heat shrinkage sleeve of a steel-plastic conversion pipe fitting, which comprises a cylinder body, wherein the cylinder body is a through cylindrical structural member, the cylinder body comprises a shell, heating pipes and a heat dissipation sleeve, the heat dissipation sleeve is sleeved in the shell, a plurality of heating pipes are uniformly arranged between the shell and the heat dissipation sleeve, the shell is provided with an air inlet, and the heat dissipation sleeve is provided with an air outlet.
Further, the air inlet 5 is provided with an air inlet device, so that the air inlet air quantity Q has the following value: 17m 3 /h≤Q≤85m 3 And/h, wind pressure P, wherein the value of the wind pressure P is as follows: p is more than or equal to 9Pa and less than or equal to 60Pa.
Further, a heat insulation layer is arranged between the shell and the heating pipe, and the air inlet penetrates through the heat insulation layer.
Further, the air inlet is arranged at the top of the shell, the air outlet is arranged at the bottom of the heat dissipation sleeve, and the air inlet and the air outlet are coaxial.
Further, the number of the air outlets is one or two or more.
Further, a diversion mechanism is arranged at the position of the air outlet.
Further, the electric heating tube is a nano heating tube.
The heating box of the heating cylinder for the anti-corrosion heat shrinkage sleeve of the heating steel-plastic conversion pipe fitting based on the structure comprises a box body, wherein the box body is provided with a mounting hole, the heating cylinder is sleeved in the mounting hole, an air inlet fan is arranged on the side wall of the box body, and an air outlet of the air inlet fan is communicated with an air inlet through a ventilation pipeline.
Further, the ventilation pipeline comprises an air inlet channel taper pipe and an air inlet guide pipe which are communicated, the air inlet channel taper pipe is communicated with an air outlet of the air inlet fan, the air inlet guide pipe is communicated with the air inlet, and an air inlet adjusting mechanism is arranged on the air inlet channel taper pipe.
Further, the number of the mounting holes is multiple, the mounting holes, the heating cylinders and the air inlet fans are arranged in a one-to-one correspondence mode in groups, and each group of the heating cylinders and the air inlet fans are electrically connected with an external power supply through power supply control switches which are independently corresponding to each other.
The beneficial effects of the invention are as follows: when the heating cylinder for the anti-corrosion heat shrinkage sleeve of the heating steel-plastic conversion pipe fitting works, the nano heating pipe arranged in the heating cylinder is controlled by the temperature control system to heat the temperature to be high enough, and meanwhile, heat is transferred to the heat dissipation sleeve, so that the heat dissipation sleeve is also heated to be high enough, the heat is transferred to the anti-corrosion heat shrinkage sleeve by the heat dissipation sleeve through air heat transfer in the heat dissipation sleeve, and the aim of heating the anti-corrosion heat shrinkage sleeve is further achieved; due to the self-properties of air, the heat dissipation sleeve can cause the vertical temperature distribution in the heat dissipation sleeve to be heated and cooled down in the vertical direction and the temperature distribution to be uneven in the vertical direction in the air heat transfer process of the heat dissipation sleeve under the action of gravity, so that the heat for heating the anti-corrosion heat shrinkage sleeve is also unevenly distributed in all directions, and the temperature difference in all directions is larger, so that the heat shrinkage sleeve is uneven in shrinkage, unsmooth in adhesion, bulges, wrinkles and uneven, and the anti-corrosion effect and the appearance quality of the anti-corrosion heat shrinkage sleeve are seriously affected. The heating cylinder is fixed in the heating box, and as mentioned above, the nano heating pipe arranged in the heating cylinder is controlled by the temperature control system to heat the temperature to be high enough and simultaneously transfer heat to the heat dissipation sleeve, so that the heat dissipation sleeve is also heated to be high enough, and the heat dissipation sleeve transfers heat to the anti-corrosion heat shrinkage sleeve through air heat transfer in the heat dissipation sleeve, thereby achieving the purpose of heating the anti-corrosion heat shrinkage sleeve; the heating box is characterized in that the side surface of the box body is provided with a fan for blowing, breeze is blown into the installation area of the nano heating pipe of the heating cylinder and circularly moves in the cavity through the air inlet channel taper pipe, the air inlet guide pipe and the air inlet of the heating cylinder, then enters the inner cavity of the heat dissipation sleeve from the air outlet, breeze entering the inner cavity of the heat dissipation sleeve from the air outlet is heated into hot air by the nano heating pipe at the moment, and the breeze mainly plays two roles, namely, supplementing the heat of the lower cooling part of the inner cavity of the heat dissipation sleeve, so that the lower temperature is kept stable; and secondly, the movement of hot air in the inner cavity of the heat dissipation sleeve is disturbed, so that hot air flows in the inner cavity of the heat dissipation sleeve are subjected to axial and radial self-regulation, further, the heat is driven to be uniformly redistributed, the uniform distribution of the temperature in all directions is regulated, and further, the inner cavity of the heat dissipation sleeve is kept stable in temperature and uniform in distribution. The steel-plastic conversion pipe fitting sleeved with the anti-corrosion heat-shrinkable sleeve is placed into the inner cavity of the heat dissipation sleeve to be heated, the anti-corrosion heat-shrinkable sleeve is positioned in hot air with uniform temperature, the hot air with uniform temperature is used for coating the steel-plastic conversion pipe fitting and uniformly heating the steel-plastic conversion pipe fitting synchronously and omnidirectionally, so that the anti-corrosion heat-shrinkable sleeve can be fully and uniformly adhered to the steel-plastic conversion pipe fitting, uneven heating caused by poor control of a manual fire baking mode is avoided, uneven adhesion is further caused, the conditions such as wrinkles, bubbles and scorching are caused, the adhesion is unreliable, the anti-corrosion capability is poor, the appearance quality is influenced, and the like are caused.
Drawings
FIG. 1 is a radial cross-sectional view of a heater cartridge of the present invention;
FIG. 2 is an axial cross-sectional view of the cartridge of the present invention without the insulating layer;
FIG. 3 is an axial cross-sectional view of a heater cartridge of the present invention having a thermally insulating layer;
FIG. 4 is a radial cross-sectional view of a heater cartridge with two air outlets according to the present invention;
FIG. 5 is an axial cross-sectional view of a heater cartridge with two air outlets according to the present invention;
FIG. 6 is a radial cross-sectional view of a heater cartridge with four air outlets according to the present invention;
FIG. 7 is a schematic view of a heating cabinet of the present invention;
fig. 8 is a schematic structural view of an intake air adjusting mechanism of the present invention.
Reference numerals: the heat-insulating and heat-preserving device comprises a shell 1, a heat-insulating layer 2, an electric heating pipe 3, a heat-radiating sleeve 4, an air inlet 5, an air outlet 6, a flow dividing mechanism 7, a box body 8, an air inlet guide pipe 9, an air inlet adjusting mechanism 10, an air inlet adjusting valve 101, an adjusting movable baffle 102, a fixed baffle 103, an air inlet channel cone 11 and an air inlet fan 12.
Detailed Description
The invention will be further described with reference to the drawings and examples.
Example 1:
as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the heating cylinder for the anti-corrosion heat shrinkage sleeve of the heating steel-plastic conversion pipe fitting comprises a cylinder body, wherein the cylinder body is a through cylindrical structural member, the cylinder body comprises a shell 1, a heating pipe 3 and a heat dissipation sleeve 4, the heat dissipation sleeve 4 is sleeved in the shell 1, a plurality of heating pipes 3 are uniformly arranged between the shell 1 and the heat dissipation sleeve 4, the shell 1 is provided with an air inlet 5, and the heat dissipation sleeve 4 is provided with an air outlet 6.
The heating cylinder for the anti-corrosion heat shrinkage sleeve of the heating steel-plastic conversion pipe fitting based on the structure is a through cylindrical heating cylinder which is formed by a shell 1, a heat insulation layer 2, a heating pipe 3 and a heat dissipation sleeve 4 which are sequentially arranged from outside to inside, a plurality of nano heating pipes 3 are uniformly arranged between the shell 1 and the heat dissipation sleeve 4 to form a cylindrical heating sleeve structural member, the heating sleeve is sleeved outside the heat dissipation sleeve 4, when the heating cylinder works, the nano heating pipes arranged in the heating cylinder heat the temperature to a sufficient level through the control of a temperature control system and transfer heat to the heat dissipation sleeve, so that the heat dissipation sleeve is also heated to a sufficient level, and the heat dissipation sleeve transfers heat to the anti-corrosion heat shrinkage sleeve through the heat transfer of air in the heat dissipation sleeve, so that the aim of heating the anti-corrosion heat shrinkage sleeve is achieved; the heating box is characterized in that the side surface of the box body is provided with a fan for blowing, breeze is blown into the installation area of the nano heating pipe of the heating cylinder and circularly moves in the cavity through the air inlet channel taper pipe, the air inlet guide pipe and the air inlet of the heating cylinder, then enters the inner cavity of the heat dissipation sleeve from the air outlet, breeze entering the inner cavity of the heat dissipation sleeve from the air outlet is heated into hot air by the nano heating pipe at the moment, and the breeze mainly plays two roles, namely, supplementing the heat of the lower cooling part of the inner cavity of the heat dissipation sleeve, so that the lower temperature is kept stable; and secondly, the movement of hot air in the inner cavity of the heat dissipation sleeve is disturbed, so that hot air flows in the inner cavity of the heat dissipation sleeve are subjected to axial and radial self-regulation, further, the heat is driven to be uniformly redistributed, the uniform distribution of the temperature in all directions is regulated, and further, the inner cavity of the heat dissipation sleeve is kept stable in temperature and uniform in distribution. The steel-plastic conversion pipe fitting sleeved with the anti-corrosion heat-shrinkable sleeve is placed into the inner cavity of the heat dissipation sleeve to be heated, the anti-corrosion heat-shrinkable sleeve is positioned in hot air with uniform temperature, the hot air with uniform temperature is used for coating the steel-plastic conversion pipe fitting and uniformly heating the steel-plastic conversion pipe fitting synchronously and omnidirectionally, so that the anti-corrosion heat-shrinkable sleeve can be fully and uniformly adhered to the steel-plastic conversion pipe fitting, uneven heating caused by poor control of a manual fire baking mode is avoided, uneven adhesion is further caused, the conditions such as wrinkles, bubbles and scorching are caused, the adhesion is unreliable, the anti-corrosion capability is poor, the appearance quality is influenced, and the like are caused.
Specifically, the inner wall of the shell 1 is provided with a mounting groove, the mounting groove extends around the circumference of the inner wall of the shell 1 to form a closed annular structure, and a plurality of heating pipes 3 are transversely arranged between the groove walls of the mounting groove, wherein the heating pipes 3 are nano heating pipes. The air inlet 5 may be provided with an air inlet device, and the air inlet 5, the mounting groove and the air outlet 6 form an air flow passage. The heat dissipation sleeve 4 is a high-temperature-resistant steel tube, heat conduction silica gel or graphene heat conduction sleeve, preferably a graphene sleeve, and the graphene has very good heat conduction performance and high strength and durability.
Preferably, the air inlet 5 is provided with an air inlet device, so that the air inlet air quantity Q has the following value: 17m 3 /h≤Q≤85m 3 And/h, wind pressure P, wherein the value of the wind pressure P is as follows: p is more than or equal to 9Pa and less than or equal to 60Pa.
Experiments prove that the air quantity Q of the air inlet 5 has the following value: 17m 3 /h≤Q≤85m 3 And/h, wind pressure P, wherein the value of the wind pressure P is as follows: when P is more than or equal to 9Pa and less than or equal to 60Pa, the gas entering from the gas inlet of the shell 1 is not rapidly discharged into the inner cavity heating cavity in the heat dissipation sleeve from the gas outlet 6, so that the embarrassing situation that the gas quantity is large, the air pressure is high and the flow is too fast, and the entering gas flow is converted into cooling gas flow, so that the temperature is not high is avoided. The intake air quantity Q is as follows: 17m 3 /h≤Q≤85m 3 And/h, wind pressure P, wherein the value of the wind pressure P is as follows: when P is more than or equal to 9Pa and less than or equal to 60Pa, the entering air flow stays for a long enough time to enable the heating pipe 3 to heat the air flow uniformly, and hot air with uniform temperature is changed into hot air to enter the heat dissipation cavity, firstly, the heat of the lower cooling part of the inner cavity of the heat dissipation sleeve is supplemented, and the temperature of the lower part is kept stable; and secondly, the hot air movement of the inner cavity of the heat dissipation sleeve is disturbed, so that the hot air flows in the inner cavity of the heat dissipation sleeve in an axial and radial self-adjusting manner, the heat is further driven to be uniformly redistributed, the uniform distribution of the temperature in all directions is adjusted, the inner cavity of the heat dissipation sleeve is further enabled to keep stable in temperature and uniform in distribution, and the effect of uniformly heating the anti-corrosion heat shrinkage sleeve on the steel-plastic conversion pipe is achieved.
Preferably, the inner cavity of the shell 1 is filled with a heat insulation material and is provided with a heat insulation layer 2, and the air inlet 5 penetrates through the heat insulation layer 2.
The heat insulation layer 2 extends around the inner wall circumference of the shell 1 to form a closed annular structure, specifically, the shell 1 is a hollow structural member with a cavity, and the heat insulation layer 2 is arranged in the cavity of the shell 1. The setting of insulating layer 2 can prevent effectively that the heat that nano heating pipe and heat dissipation cover produced from leading to the heat to spill and cause extravagant in the outside air towards shell 1, makes the heat that electric heating pipe released almost only lead to on the heat dissipation cover 4 like this, has improved thermal utilization ratio, effective energy saving, and insulating layer 2 makes the outside temperature of shell 1 low simultaneously, avoids causing the scald to operating personnel to make work safer. The heat insulation layer 2 is made of heat insulation materials such as asbestos, rock wool, vacuum plates and the like, and is preferably high-temperature-resistant heat insulation cotton.
Preferably, the air inlet 5 is disposed at the top of the housing 1, the air outlet 6 is disposed at the bottom of the heat dissipation sleeve 4, the air outlet is one, and the air inlet 5 and the air outlet 6 are coaxial. And a diversion mechanism is arranged at the position of the air outlet.
The air inlet is arranged at the center of the top of the shell 1, the air outlet 6 is coaxial with the air inlet 5, the air outlet 6 is arranged to enable breeze air flow entering from the shell 1 to pass through the nano heating pipe 3, the breeze air flow is heated into hot air flow through the nano heating pipe 3, and the hot air flow enters the heating cavity of the heat dissipation sleeve 4 to heat the steel-plastic conversion pipe fitting and the anti-corrosion heat shrinkage sleeve, so that the heating time is shortened; the air inlet sets up at the top of shell 1, and gas outlet 6 sets up the bottom at cooling jacket 4, and the air flows out from top entering bottom and flows through the distance far away, and the heating time is abundant, and in-process heating pipe 3 is fully even heating to the air flowing through, and the hot air flow flows up from cooling jacket 4 bottom simultaneously, avoids being in the steel plastic switching pipe fitting of cooling jacket 4 bottom and anticorrosive heat shrink cover heated air flow less, causes the heating inhomogeneous.
Preferably, the number of the air outlets 6 is one or two or more.
When the quantity of gas outlets 6 is one, gas outlets 6 set up in the bottom of cooling jacket 4, and the air inlet sets up in the top central point department of shell 1, gas outlets 6 and air inlet 5 coaxial line, and the gas outlet is provided with reposition of redundant personnel mechanism. Further, when the number of the air outlets 6 is two, the two air outlets 6 are uniformly arranged at the bottom of the heat dissipation sleeve 4 along the axial interval of the heat dissipation sleeve 4, the axis of the air inlet 4 is coplanar with the axis of the two air outlets 6, the two air outlets 6 are equidistantly arranged at two sides of the axis of the air inlet 4, the two air outlets 6 are arranged at two sides of the axis of the air inlet 4, the heating cavity for accelerating the hot air flow in the shell 1 and entering the heat dissipation sleeve 4 heats the steel-plastic conversion pipe fitting and the anti-corrosion heat shrinkage sleeve, and the two air outlets are provided with the flow dividing mechanism. The heating time is further reduced, and meanwhile, the hot air flow can better enter the part far away from the center of the electric heating cylinder, so that the temperature of the air at the edge of the heating cylinder is increased, and the heat of the air in the electric heating cylinder is more uniform. Further, when the number of the air outlets 6 is four, the four air outlets are connected to form a square structure, every two air outlets are uniformly distributed at equal intervals in the axial direction of the heat dissipation sleeve and are symmetrically distributed in a radial direction in an angle mode. The center of square structure is located the axis of air inlet 4, and the heating chamber that gets into heat dissipation cover 4 that four air outlet 6's setting made the interior hot air flow of shell 1 further accelerate heats steel-plastic conversion pipe fitting and anticorrosive heat shrink cover, and the time of heating is reduced to one step still, and the part of electric heating section of thick bamboo center is kept away from in the entering that the hot air flow can be further better simultaneously promotes the temperature of heating section of thick bamboo edge air, makes the air heat in the electric heating section of thick bamboo more even. Further, the air outlets 6 are arranged at the bottom of the heat dissipation sleeve 4, the number of the air outlets 6 is divided into two groups, each group is uniformly and symmetrically distributed in the axial direction of the heat dissipation sleeve 4 relative to the axial line of the air inlet 5 at equal intervals, and each group is symmetrically distributed in a plane formed by intersecting the axial line of the air inlet 5 and the axial line of the heat dissipation sleeve 4. The arrangement of the air outlets 6 in the number of the two pairs ensures that the heating cavity of the heat-dissipation sleeve 4, which is further accelerated by the hot air flow in the shell 1, heats the steel-plastic conversion pipe fitting and the anti-corrosion heat-shrinkage sleeve, the heating time is further reduced, and meanwhile, the hot air flow can further better enter the part far away from the center of the electric heating cylinder, so that the temperature of the air at the edge of the heating cylinder is increased, and the heat of the air in the electric heating cylinder is more uniform.
The flow dividing mechanism 7 enables the hot air flow to flow out from the air outlet 6 towards different directions, so that the whole heating cavity is quickly and uniformly filled. Further, the air inlet 5 is arranged at the center of the top of the shell 1, the air outlet 6 is arranged at the bottom of the heat dissipation sleeve 4, the air outlet 6 and the air inlet 5 are coaxial, the expansion of the hot air flow rises and gathers at the top of the shell 1, the air inlet 5 is arranged at the top of the shell 1, the air inlet fan 12 blows the hot air downwards and is fully mixed with the cold air flow at the bottom, so that the air flow temperature in the shell 1 is kept consistent. The flow dividing mechanism 7 is a metal groove or a metal rod or a metal sheet, further, the flow dividing mechanism 7 is a metal groove, the metal groove is transversely bonded (such as welded, welded and high-temperature-resistant bonded) or connected by threads or bolts or riveted on the air outlet 6, the groove wall of the metal groove is inclined outwards, and the groove bottom of the metal groove is provided with a hole. The hot air flows out of the air outlet 6 and is diverted by the metal groove to flow upwards from the hole, the left groove wall of the metal groove enables the hot air to flow towards the left and the left upper parts, the right groove wall of the metal groove enables the hot air to flow towards the right and the right upper parts, the rebound of the groove bottom wall downwards and other different directions, so that the hot air flows quickly and uniformly fill the whole heating cavity.
Preferably, the heating tube 3 is an electric heating tube, and the electric heating tube has high heat efficiency and uniform heating.
Preferably, the heating tube 3 is a nano heating tube. Compared with the common electric heating wire, the nano heating tube has the advantages that the power can be automatically adjusted, the temperature can be regulated and controlled, and the nano heating tube has the characteristics of safety, difficult scale formation, acid and alkali resistance, long service life and the like.
Example 2:
as shown in fig. 7 and 8, the heating box based on the heating cylinder for the steel-plastic conversion pipe fitting anti-corrosion heat shrinkage sleeve of embodiment 1 comprises a box body 8 and the heating cylinder for the steel-plastic conversion pipe fitting anti-corrosion heat shrinkage sleeve, wherein the box body 8 is provided with a mounting hole, the heating cylinder is sleeved in the mounting hole, the side wall of the box body 8 is provided with an air inlet fan 12, and an air outlet of the air inlet fan 12 is communicated with the air inlet 5 through a ventilation pipeline. The heating box is used as a carrier, so that the heating cylinder is convenient to install, fix and practically process and apply. The number of the mounting holes is one or two or more.
The air inlet fan 12 is arranged to enable air entering the shell 1 to be in a flowing state, heat exchange is carried out on the air in the shell, and uniform heating is better realized when the air temperature is kept consistent. Wherein the air outlet quantity Q,17m of the air inlet fan 12 3 /h≤Q≤85m 3 And/h, wind pressure P, wherein the value of the wind pressure P is as follows: p is more than or equal to 9Pa and less than or equal to 60Pa, so that air enters the shell 1 from the air inlet 5 to be fully heated, the heated air flow temperature is uniform, the phenomenon that the air entering the shell 1 is not fully heated due to too high air inlet speed, the air is heated unevenly is avoided, the heating of the steel-plastic conversion pipe fitting and the heat shrinkage sleeve is uneven due to uneven temperature of the hot air flow, and the heating efficiency is influenced due to too low speed is avoided.
Further, the ventilation pipeline comprises an air inlet channel taper pipe 11 and an air inlet guide pipe 9 which are communicated, the air inlet channel taper pipe 11 is communicated with an air outlet of the air inlet fan 12, the air inlet guide pipe 9 is communicated with the air inlet 5, and an air inlet regulating mechanism 10 is arranged on the air inlet channel taper pipe 11.
The air inlet fan 12 works to enable air to enter the air inlet channel taper pipe 11 from the air outlet of the air inlet fan 12, enter the air inlet guide pipe 9 through the air inlet channel taper pipe 11, enter the air inlet 5 through the air inlet guide pipe 9, enter the shell 1 through the air inlet 5, heat the air by the electric heating pipe 2, enable hot air flow to enter the heating cavity from the air outlet 6, and heat the steel-plastic conversion pipe fitting and the heat shrinkage sleeve. The intake air adjusting mechanism 10 can adjust the flow rate and the flow velocity of the intake air.
The air inlet regulating mechanism 10 comprises an air inlet regulating valve 101, a regulating movable baffle plate 102 and a fixed baffle plate 103, wherein the fixed baffle plate 103 is hemispherical, the fixed baffle plate 103 is covered and fixedly arranged on the inner wall of an air inlet channel taper pipe 11, the regulating movable baffle plate 102 is accommodated in the air inlet channel taper pipe 11, a circular opening matched with the fixed baffle plate 103 is formed in the regulating movable baffle plate 102, the radius of the opening is identical to that of the fixed baffle plate 103, the opening of the regulating movable baffle plate 102 is clamped on the fixed baffle plate 103, the opening edge of the opening is attached to the fixed baffle plate 103, when the regulating movable baffle plate 102 is perpendicular to the axis of the air inlet channel taper pipe 11, the regulating movable baffle plate 102 and the fixed baffle plate 103 are combined to just block the air inlet channel taper pipe 11, the air inlet regulating valve 101 is fixedly connected with the regulating movable baffle plate 102 through a connecting rod, a hole is formed in the air inlet channel taper pipe 11, and the connecting rod is rotationally arranged in the hole. When the air inlet regulating mechanism 10 is used, the air inlet regulating valve 101 is rotated to control and regulate the angle of the movable baffle plate 102 to regulate the opening size of the air inlet channel taper pipe 11, so that the air inlet flow speed and the air inlet flow rate are regulated, the air entering the shell 1 is fully heated, the air temperature is better uniform, and the uniform heating of the heat shrinkage sleeve is facilitated.
Preferably, the number of the mounting holes is a plurality, the mounting holes, the heating cylinders and the air inlet fans 12 are arranged in a one-to-one correspondence manner in groups, and each group of the heating cylinders and the air inlet fans 12 is electrically connected with an external power supply through a power supply control switch which corresponds to each other.
The external power supply of each electric heating cylinder and the corresponding air inlet fan 12 in the heating box is controlled by the same independent control switch, so that the on-off condition of a certain electric heating cylinder can be independently controlled, and when the number of the pipe fittings processed at a time is smaller than that of the electric heating cylinders, the power supply of the idle electric heating cylinder is turned off, thereby avoiding electric energy waste and saving cost.
Claims (10)
1. The utility model provides a heating steel is moulded conversion pipe fitting anticorrosive heat shrink and is used mechanically's heating cylinder, includes the barrel, the barrel is the cylindric structure that link up, characterized by, the barrel includes shell (1), heating pipe (3) and heat dissipation cover (4), heat dissipation cover (4) cup joint in shell (1), a plurality of heating pipe (3) evenly set up between shell (1) and heat dissipation cover (4), shell (1) are provided with air inlet (5), heat dissipation cover (4) are provided with gas outlet (6).
2. The heating cylinder for heating the anti-corrosion heat shrinkage sleeve of the steel-plastic conversion pipe fitting according to claim 1, wherein the air quantity Q of the air inlet (5) has the following value: 17m 3 /h≤Q≤85m 3 And/h, wind pressure P, wherein the value of the wind pressure P is as follows: p is more than or equal to 9Pa and less than or equal to 60Pa.
3. The heating cylinder for the anti-corrosion heat shrinkage sleeve of the heating steel-plastic conversion pipe fitting according to claim 2, wherein a heat insulation layer (2) is arranged between the shell (1) and the heating pipe (3), and the air inlet (5) penetrates through the heat insulation layer (2).
4. The heating cylinder for the anti-corrosion heat shrinkage sleeve of the heating steel-plastic conversion pipe fitting according to claim 3, wherein the air inlet (5) is arranged at the top of the shell (1), the air outlet (6) is arranged at the bottom of the heat dissipation sleeve (4), and the air inlet (5) and the air outlet (6) are coaxial.
5. The heating cylinder for heating the anti-corrosion heat shrinkage sleeve of the steel-plastic conversion pipe fitting according to claim 4, wherein the number of the air outlets (6) is one or two or more.
6. The heating cylinder for the anti-corrosion heat shrinkage sleeve for the heating steel-plastic conversion pipe fitting according to claim 5, wherein a diversion mechanism (7) is arranged at the position of the air outlet (6).
7. The heating cylinder for heating the anti-corrosion heat shrinkage sleeve of the steel-plastic conversion pipe fitting according to claim 1, wherein the heating pipe (3) is a nano heating pipe.
8. The heating box with the heating cylinder for the anti-corrosion heat shrinkage sleeve for the heating steel-plastic conversion pipe fitting according to any one of claims 1-7 is characterized by comprising a box body (8), wherein the box body (8) is provided with a mounting hole, the heating cylinder is sleeved in the mounting hole, the side wall of the box body (8) is provided with an air inlet fan (12), and an air outlet of the air inlet fan (12) is communicated with an air inlet (5) through a ventilation pipeline.
9. The heating cabinet according to claim 8, wherein the ventilation duct comprises an air inlet channel taper pipe (11) and an air inlet conduit (9) which are communicated, the air inlet channel taper pipe (11) is communicated with an air outlet of the air inlet fan (12), the air inlet conduit (9) is communicated with the air inlet (5), and an air inlet regulating mechanism (10) is arranged on the air inlet channel taper pipe (11).
10. The heating cabinet according to claim 9, wherein the number of the mounting holes is plural, the mounting holes, the heating cylinders and the air inlet fans (12) are arranged in a one-to-one correspondence manner in groups, and each group of the heating cylinders and the air inlet fans (12) is electrically connected with an external power supply through a power supply control switch corresponding to each group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310447322.XA CN116480871A (en) | 2023-04-24 | 2023-04-24 | Heating cylinder and heating box for heating steel-plastic conversion pipe fitting anti-corrosion heat shrinkage sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310447322.XA CN116480871A (en) | 2023-04-24 | 2023-04-24 | Heating cylinder and heating box for heating steel-plastic conversion pipe fitting anti-corrosion heat shrinkage sleeve |
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| CN116480871A true CN116480871A (en) | 2023-07-25 |
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|---|---|---|---|
| CN202310447322.XA Pending CN116480871A (en) | 2023-04-24 | 2023-04-24 | Heating cylinder and heating box for heating steel-plastic conversion pipe fitting anti-corrosion heat shrinkage sleeve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117222064A (en) * | 2023-11-09 | 2023-12-12 | 黑龙江省奥普瑞石油科技有限公司 | Constant-power electric tracing band for pipeline |
| CN117528848A (en) * | 2024-01-04 | 2024-02-06 | 深圳市辰昱科技有限公司 | Ceramic-based infrared heating device and processing method thereof |
-
2023
- 2023-04-24 CN CN202310447322.XA patent/CN116480871A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117222064A (en) * | 2023-11-09 | 2023-12-12 | 黑龙江省奥普瑞石油科技有限公司 | Constant-power electric tracing band for pipeline |
| CN117222064B (en) * | 2023-11-09 | 2024-01-05 | 黑龙江省奥普瑞石油科技有限公司 | Constant-power electric tracing band for pipeline |
| CN117528848A (en) * | 2024-01-04 | 2024-02-06 | 深圳市辰昱科技有限公司 | Ceramic-based infrared heating device and processing method thereof |
| CN117528848B (en) * | 2024-01-04 | 2024-03-15 | 深圳市辰昱科技有限公司 | Ceramic-based infrared heating device and processing method thereof |
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