CN203485356U - On-line type preheating device used before foaming of polyurethane directly-buried heat insulation pipe operating line - Google Patents
On-line type preheating device used before foaming of polyurethane directly-buried heat insulation pipe operating line Download PDFInfo
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- CN203485356U CN203485356U CN201320506483.3U CN201320506483U CN203485356U CN 203485356 U CN203485356 U CN 203485356U CN 201320506483 U CN201320506483 U CN 201320506483U CN 203485356 U CN203485356 U CN 203485356U
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Abstract
The utility model relates to the technical field of manufacturing of a directly-buried heat insulation pipe, and in particular relates to an on-line type preheating device used before foaming of a polyurethane directly-buried heat insulation pipe operating line. The device comprises a heating furnace body, an air blower, a first flexible connection air duct, a second flexible connection air duct, a third flexible connection air duct, a left fan cover lifting movable bracket and a right fan cover lifting movable bracket, wherein the first flexible connection air duct is in lap joint with the upper part of the right fan cover lifting movable bracket; one end of the first flexible connection air duct is connected with a fan cover; the other end of the heating furnace body is connected with the outlet end of the air blower; the inlet end of the air blower is connected with one end of the second flexible connection air duct; the second flexible connection air duct is in lap joint with the lower part of the right fan cover lifting movable bracket; the other end of the second flexible connection air duct is connected with the fan cover. The on-line type preheating device is simple in structure; the two ends of a combination body of two steel pipes to be machined and a polyethylene (PE) pipe are sealed by the fan cover, the heating furnace body is used for heating, and the air blower is used for supplying heat, so that the combination body of the steel pipes and the PE pipe can be heated.
Description
Technical field
The utility model relates to direct-buried thermal insulation pipe manufacturing technology field, relates in particular to the front preheating device of a kind of online direct burried polyurethane insulating tube production line foaming.
Background technology
Prefabricated direct-buried heat insulation pipe is mainly used in district heating outer net pipeline, and along with the popularization of country to central heating, its consumption is increasing, and the scope of application is also more and more wider.The plurality of advantages such as prefabricated direct-buried thermal insulation pipe road has waterproof, antiseptic property is good, saving is invested, shorten construction period, maintenance cost is low.
And the prefabricated direct-buried pipe using is at present comprised of steel pipe, support, heat-insulation layer, outer pillar, according to design and customer requirement, generally select seamless pipe spiral welded and straight-seam pipes.Steel tube surface is after advanced impeller blasting PROCESS FOR TREATMENT, and steel pipe derusting grade can reach the Sa2 level in GB8923-1988 standard, and surface roughness can reach R=12.5 micron in GB6060.5-88 standard.Heat-insulation layer, in the cavity forming between outer jacket at steel pipe with high pressure foaming machine, disposable injection RPUF stoste forms.Be commonly called as " tube-in-tube foam process ".Its effect one is insulation, the 2nd, and waterproof, the 3rd, support heat supply network deadweight.When input media temperature is: in the time of-50 ℃-120 ℃, select rigid polyurethane foams to do heat-insulation layer; When pumped (conveying) medium temperature is: in the time of 50 ℃-150 ℃, select hard polyurethane base uric acid fat foamed plastics to do heat-insulation layer.Protective layer, the black plastic tubing of prefabricated certain wall thickness, standby after corona PROCESS FOR TREATMENT.Its effect one is that protection heat-insulation layer exempts from the hard thing destruction of machinery, the 2nd, anticorrosion waterproof.
At present, in Chinese northern winter, the lower foamed time of direct-buried thermal insulation pipe that causes of temperature is long, efficiency is low, foaming effect is not good, and intensity and hardness are inadequate, in order to address the above problem, producer has increased the process of a preheating before foaming at direct-buried thermal insulation pipe, in the prior art, the mode adopting is the mode of coal heating, oil heating or heated by natural gas, and temperature is controlled dumb, there is hysteresis quality, environment is produced and polluted.
Utility model content
The purpose of this utility model is to overcome the deficiency of above-mentioned technology, and provides a kind of online direct burried polyurethane insulating tube production line foaming front preheating device, can control accurately heating-up temperature, improves foaming quality.
The utility model for achieving the above object, by the following technical solutions: preheating device before a kind of online direct burried polyurethane insulating tube production line foaming, it is characterized in that: comprise heating furnace body, air blast, first air channel that is flexible coupling, second air channel that is flexible coupling, the 3rd be flexible coupling air channel and a left side, right fan housing lifting traversing carriage, described first air channel that is flexible coupling is overlapped on described right fan housing lifting traversing carriage top, described first one end that is flexible coupling air channel is connected with fan housing, the other end is connected with one end of described heating furnace body, the other end of described heating furnace body is connected with the port of export of described air blast, the entrance point of described air blast and described second one end, air channel that is flexible coupling is connected, described second air channel that is flexible coupling is overlapped on described right fan housing lifting traversing carriage bottom, described second other end that is flexible coupling air channel is connected with fan housing, described the 3rd two ends that are flexible coupling air channel are respectively equipped with a minute cover, are separately positioned on described left fan housing lifting traversing carriage upper and lower, in described heating furnace body, be provided with temperature sensor in stove, in described stove, temperature sensor is connected with electrical control gear.
Preferably, the port of export of described heating furnace body is provided with outlet temperature sensor, and described outlet temperature sensor is connected with described electrical control gear.
Preferably, the air inlet of described air blast is provided with return air temperature sensor, and described return air temperature sensor is connected with described electrical control gear.
Preferably, described heating furnace body consists of M shape air heating pipe and cold-rolled steel sheet body of thermal insulating box.
Preferably, described electrical control gear mainly consists of fuse, breaker, power regulating eqiupment, PLC and remote communication interface and touch-screen.
The beneficial effects of the utility model are: the utility model is simple in structure, easy to use, four fan housings are sealed at both ends by two steel pipes to be processed and PE pipe assembly, by heating furnace body, heat, air blast send heat, and steel pipe and PE pipe assembly are heated, the setting of three diverse location sensors, can control accurately the heating-up temperature of steel pipe and PE pipe assembly, controlled flexibly, pollution-free.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1, heating furnace body; 2, air blast; 3, first air channel that is flexible coupling; 4, second air channel that is flexible coupling; 5, the 3rd air channel that is flexible coupling; 6, left fan housing lifting traversing carriage; 7, right fan housing lifting traversing carriage; 8, fan housing; 9, temperature sensor in stove; 10, outlet temperature sensor; 11, return air temperature sensor.
The specific embodiment
Below in conjunction with accompanying drawing and preferred embodiment, describe the specific embodiment of the present utility model in detail.As shown in Figure 1, preheating device before a kind of online direct burried polyurethane insulating tube production line foaming, comprise heating furnace body 1, air blast 2, first air channel 3 that is flexible coupling, second air channel 4 that is flexible coupling, the 3rd be flexible coupling air channel 5 and a left side, right fan housing lifting traversing carriage 6, 7, described first air channel that is flexible coupling is overlapped on described right fan housing lifting traversing carriage top, described first one end that is flexible coupling air channel is connected with fan housing 8, the other end is connected with one end of described heating furnace body, the other end of described heating furnace body is connected with the port of export of described air blast, the entrance point of described air blast and described second one end, air channel that is flexible coupling is connected, described second air channel that is flexible coupling is overlapped on described right fan housing lifting traversing carriage bottom, described second other end that is flexible coupling air channel is connected with fan housing 8, described the 3rd two ends that are flexible coupling air channel are respectively equipped with a minute cover 8, are separately positioned on described left fan housing lifting traversing carriage upper and lower, in described heating furnace body, be provided with temperature sensor 9 in stove, in described stove, temperature sensor is connected with electrical control gear.The port of export of described heating furnace body is provided with outlet temperature sensor 10, and described outlet temperature sensor is connected with described electrical control gear.The air inlet of described air blast is provided with return air temperature sensor 11, and described return air temperature sensor is connected with described electrical control gear.Described heating furnace body consists of M shape air heating pipe and cold-rolled steel sheet body of thermal insulating box.Described electrical control gear mainly consists of fuse, breaker, power regulating eqiupment, PLC and remote communication interface and touch-screen.
The course of work: 1,, when heated object moves to station, respectively the air channel on hoisting bracket is enclosed within to the two ends of heated object;
2, start the initiation key button on electrical control gear;
3, air blast brings into operation;
4, in body of heater, air heating pipe starts to heat up, and in stove, temperature transducer is sent to PLC by Current Temperatures signal, and when temperature surpasses 300 ℃, body of heater heating stops immediately, until temperature drops to lower limit set value, body of heater recovers to heat again;
5, body of heater outlet temperature measuring transducer is sent to PLC(programmable controller by temperature signal), and touching screen display by PLC, when temperature surpasses setting value, PLC is sent to power regulating eqiupment by overtemperature signal, the automatic regulation output of power regulating eqiupment, and by the Voltage-output after calculating to heating tube, until body of heater stops heating.When temperature does not reach when setting value, PLC is sent to power regulating eqiupment by Current Temperatures signal, the automatic regulation output of power regulating eqiupment, and by the Voltage-output after calculating to heating tube, heating tube automatic heating;
6, measure return air temperature sensor the temperature signal in backwind tube is real-time transmitted to PLC, through PLC, compare with setting value, when being less than setting value, body of heater continues to heat, and air blast continues to blow hot blast in heated object, moves in circles; When real time temperature is greater than setting value, body of heater stops heating gradually, and shows real time temperature by touch-screen, simultaneously with sound and light alarm;
7, after stopping heating, remove the fan housing at heated object two ends, fan housing is put relatively, air blast does not stop, and body of heater is heated and stopped, and is heated workpiece and shifts out station.
8, when new heated object moves to heating station again, again start the initiation key button having resetted, system is resumed work again.
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. preheating device before an online direct burried polyurethane insulating tube production line foaming, it is characterized in that: comprise heating furnace body, air blast, first air channel that is flexible coupling, second air channel that is flexible coupling, the 3rd be flexible coupling air channel and a left side, right fan housing lifting traversing carriage, described first air channel that is flexible coupling is overlapped on described right fan housing lifting traversing carriage top, described first one end that is flexible coupling air channel is connected with fan housing, the other end is connected with one end of described heating furnace body, the other end of described heating furnace body is connected with the port of export of described air blast, the entrance point of described air blast and described second one end, air channel that is flexible coupling is connected, described second air channel that is flexible coupling is overlapped on described right fan housing lifting traversing carriage bottom, described second other end that is flexible coupling air channel is connected with fan housing, described the 3rd two ends that are flexible coupling air channel are respectively equipped with a minute cover, are separately positioned on described left fan housing lifting traversing carriage upper and lower, in described heating furnace body, be provided with temperature sensor in stove, in described stove, temperature sensor is connected with electrical control gear.
2. preheating device before online direct burried polyurethane insulating tube production line foaming according to claim 1, is characterized in that, the port of export of described heating furnace body is provided with outlet temperature sensor, and described outlet temperature sensor is connected with described electrical control gear.
3. preheating device before online direct burried polyurethane insulating tube production line foaming according to claim 1, is characterized in that, the air inlet of described air blast is provided with return air temperature sensor, and described return air temperature sensor is connected with described electrical control gear.
4. according to preheating device before the online direct burried polyurethane insulating tube production line foaming described in claim 2 or 3, it is characterized in that, described heating furnace body consists of M shape air heating pipe and cold-rolled steel sheet body of thermal insulating box.
5. according to preheating device before the online direct burried polyurethane insulating tube production line foaming described in claim 2 or 3, it is characterized in that, described electrical control gear mainly consists of fuse, breaker, power regulating eqiupment, PLC and remote communication interface and touch-screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320506483.3U CN203485356U (en) | 2013-08-19 | 2013-08-19 | On-line type preheating device used before foaming of polyurethane directly-buried heat insulation pipe operating line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320506483.3U CN203485356U (en) | 2013-08-19 | 2013-08-19 | On-line type preheating device used before foaming of polyurethane directly-buried heat insulation pipe operating line |
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| Publication Number | Publication Date |
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| CN203485356U true CN203485356U (en) | 2014-03-19 |
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| CN201320506483.3U Expired - Fee Related CN203485356U (en) | 2013-08-19 | 2013-08-19 | On-line type preheating device used before foaming of polyurethane directly-buried heat insulation pipe operating line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109648774A (en) * | 2019-01-28 | 2019-04-19 | 唐山兴邦管道工程设备有限公司 | A kind of insulating tube heating equipment |
| CN113459378A (en) * | 2020-03-30 | 2021-10-01 | 青岛海尔电冰箱有限公司 | Ice thermal insulation box body, preparation method thereof and refrigerator with same |
-
2013
- 2013-08-19 CN CN201320506483.3U patent/CN203485356U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109648774A (en) * | 2019-01-28 | 2019-04-19 | 唐山兴邦管道工程设备有限公司 | A kind of insulating tube heating equipment |
| CN109648774B (en) * | 2019-01-28 | 2024-01-09 | 唐山兴邦管道工程设备有限公司 | Insulating tube firing equipment |
| CN113459378A (en) * | 2020-03-30 | 2021-10-01 | 青岛海尔电冰箱有限公司 | Ice thermal insulation box body, preparation method thereof and refrigerator with same |
| US11879585B2 (en) | 2020-03-30 | 2024-01-23 | Qingdao Haier Refrigerator Co., Ltd. | Thermal insulation cabinet, and method for preparing same and refrigerator having same |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20210819 |