CN101909371B - Explosion-proof electric heater - Google Patents
Explosion-proof electric heater Download PDFInfo
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- CN101909371B CN101909371B CN2010101060815A CN201010106081A CN101909371B CN 101909371 B CN101909371 B CN 101909371B CN 2010101060815 A CN2010101060815 A CN 2010101060815A CN 201010106081 A CN201010106081 A CN 201010106081A CN 101909371 B CN101909371 B CN 101909371B
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Abstract
The invention discloses a explosion-proof electric heater for heating media of gas, oil, water and the like to raise the temperature of the medium. The explosion-proof electric heater is characterized by mainly comprising an explosion-proof wiring cavity, a pipe plate, an electric heating pipe, a temperature sensor, a temperature-measuring protective pipe, a casting resin cylinder, a filling powder particle cylinder, an exhausting valve seat and the like. The pipe ports of the electric heating pipe and the temperature-measuring protective pipe are respectively welded on a flange plate; the end surface of the flange plate is welded with the filling powder particle cylinder; the circle of the filling powder particle cylinder is welded with the exhausting valve seat; the casting resin cylinder is welded on the end surface of the filling powder particle cylinder; the pipe plate is welded on the external circle of the end surface of the casting resin cylinder; and the explosion-proof wiring cavity is welded on the end surface circle of the pipe plate. The filling powder particle cylinder is internally and compactly filled with insulating, temperature-resistant and heat-transferring powder particles; the casting resin cylinder is internally cast with the insulating and temperature-resistant resin, which is firm after condensation. No temperature-measuring protective pipe is arranged at the front end of the temperature sensor, and the corresponding position of the front end of the temperature sensor is designed and manufactured with an Omega-shaped expansion joint. The invention has the advantages of enough safety and electricity saving.
Description
Technical field
The present invention is a kind of anti-explosion electric heater, is used for flammable explosive gas environment (also can be used for non-flammable explosive gas environment), converts electrical energy into heat energy, and media such as various oil, gas, water are heated, and improves the temperature of medium.
Background technology
Original technical scheme mainly is made up of explosion-proof wiring cavity, tube sheet, electrothermal tube heat radiation sleeve pipe, temperature sensor heat radiation sleeve pipe, flanged plate, electrothermal tube, temperature sensor, thermometric pillar etc., has following defective:
1, undercapacity, poor safety performance.Anti-explosion electric heater heating cavity and external environment seal; In order to reach sealing effectiveness; Earlier tube sheet, flanged plate are welded on electrothermal tube heat radiation sleeve pipe, temperature sensor heat radiation sleeve pipe two ends respectively, electrothermal tube and the welding of electrothermal tube heat radiation sleeve pipe, thermometric pillar are welded with temperature sensor heat radiation sleeve pipe again, the weld seam of solder side disperses more; Bonding strength is not enough, in use is prone to take place crackle; The caliber of electrothermal tube heat radiation sleeve pipe, temperature sensor heat radiation sleeve pipe is less, and thickness of pipe wall has only 1-2mm, and intensity is limited; With tube sheet and flanged plate be to be welded to connect, be to guarantee radiating effect, long-term exposed outside; Influenced by external force to cause the probability that damages bigger, very likely cause security incident.
2, thermometric is inaccurate, and temperature sensor is fragile.Temperature sensor is to be inserted in the thermometric pillar, with clamp thermometric pillar and electrothermal tube is fixed.During anti-explosion electric heater work; Temperature is passed to the measurement pillar from the electrothermal tube surface; Be passed to temperature sensor by the thermometric pillar again, the temperature of temperature sensor measurement and electrothermal tube surface actual temperature error are bigger, can not accurately measure real time temperature; Can't accurately regulate and control power output, cause waste of electric energy; In electrothermal tube when heating,, along with the rising of temperature, electrothermal tube and thermometric pillar coefficient of thermal expansion are inconsistent, thereby thermometric pillar and electrothermal tube generation are misplaced, and the welding position of thermometric pillar is impacted; After stopping heating, the electrothermal tube temperature falls after rise, and length and thermometric pillar after electrothermal tube shortens are inconsistent, make the flexural deformation of thermometric pillar, causes temperature sensor to damage.
Summary of the invention
Technical problem to be solved by this invention is: the anti-explosion electric heater that high, the safe and reliable and saves energy of a kind of intensity is provided.
For solving the technical scheme that above technical problem takes is such: remove electrothermal tube heat radiation sleeve pipe and the temperature sensor sleeve pipe that dispels the heat, the mouth of pipe place of electrothermal tube and thermometric pillar is welded on the flanged plate respectively; The powder cylindrical shell is filled in welding on the flanged plate end face; Filling welding venting valve seat on the powder cylindrical shell circle; On filling powder body end surface, weld casting resin cylinder; On casting resin cylinder end face cylindrical, weld tube sheet; At tube sheet end surface circle welding explosion-proof wiring cavity.In filling the powder cylindrical shell, closely fill powder with insulation, heatproof, heat transfer; In casting resin cylinder, water and completely have insulation, heatproof, coagulate the firm resin in back.The fore-end of temperature sensor does not have the thermometric pillar; A Ω shape expansion joint is designed, is made in temperature sensor fore-end relevant position.
Because adopt above technical scheme, its effect is conspicuous:
1, strengthened security performance.Flanged plate is to be connected with filling powder cylindrical shell, casting resin cylinder, tube sheet with the explosion-proof wiring cavity, has only the solder side of four circumference between them altogether, and weld seam is few and concentrated, and bonding strength is high, in use can not crack.The filling powder has the effect of insulation, heatproof, heat transfer, can the electrothermal tube hot junction be transmitted to the heat of the electrothermal tube terminals at cold junction place, and conduction is given and filled the powder barrel wall fast; Be dispersed into the space; Heat radiation is good, and the temperature of electrothermal tube terminals can be not higher, eliminates safe hidden trouble.Fill powder and can improve the insulation property of electrothermal tube wiring and temperature sensor wiring, improved security performance.Fill a venting valve seat on the powder cylindrical shell, be used to install automatic blow off valve valve air relief, in the anti-explosion electric heater course of work; Fill in the powder cylindrical shell and can produce some gases gradually; Cylinder internal pressure is strengthened gradually, and when pressure arrived certain numerical value greatly, automatic blow off valve valve air relief can be opened automatically; The gas of getting rid of accumulation in the cylindrical shell makes the cylindrical shell external and internal pressure consistent.Casting resin has insulation, heatproof, coagulates the firm effect in back, further improves the insulation property of electrothermal tube wiring and temperature sensor wiring, the position of fixing each wiring, and with the powder sealing and fixing in filling the powder cylindrical shell.The temperature sensor front end is fixed with clamp and electrothermal tube; The design of temperature sensor fore-end relevant position, Ω shape expansion joint of making; Zhang Yuhe through this expansion joint; Eliminate temperature sensor and electrothermal tube and produce the phenomenon of dislocation at work, can not influence the welding position, temperature sensor can not damage.
2, accurate thermometric, energy savings.The fore-end of temperature sensor does not have the thermometric pillar, and the electrothermal tube surface temperature is directly passed to temperature sensor, and thermometric is accurate.Temperature signal sends automatic control cabinet to accurately, and the output heating power what just can accurately be regulated, control, and avoids waste of electric energy.
Description of drawings
Fig. 1 is the anti-explosion electric heater structure sketch drawing of original technical scheme.
Fig. 2 is the arrangement of temperature sensor enlarged drawing of the anti-explosion electric heater of original technical scheme.
Fig. 3 is the anti-explosion electric heater structure diagram of prior art scheme
Fig. 4 is the arrangement of temperature sensor enlarged drawing of the anti-explosion electric heater of prior art scheme.
Among the figure: 1, explosion-proof wiring cavity 2, electrothermal tube terminals 3, tube sheet 4, electrothermal tube heat radiation sleeve pipe 5, temperature sensor heat radiation sleeve pipe 6, flanged plate 7, electrothermal tube 8, temperature sensor 9, clamp 10, temperature sensor wiring 11, thermometric pillar 12, casting resin cylinder 13, filling powder cylindrical shell 14, venting valve seat
Embodiment
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4: the present invention is a kind of anti-explosion electric heater, and the mouth of pipe place of electrothermal tube 7 is welded on the flanged plate 6, and the mouth of pipe place of the thermometric pillar 11 of temperature sensor 8 is welded on the flanged plate 6; Powder cylindrical shell 13 is filled in welding on flanged plate 6 end faces; Filling a venting of welding valve seat 14 on the powder cylindrical shell circle; Welding casting resin cylinder 12 on the powder filler body end surface; Welding tube sheet 3 on casting resin cylinder end face cylindrical; At tube sheet end surface circle welding explosion-proof wiring cavity 1.
Draw the electrothermal tube wiring from every electrothermal tube terminals 2,, in casting resin cylinder 12, extend in the explosion-proof wiring cavity 1 again, be connected with power line at last to filling in the powder cylindrical shell 13.Draw temperature sensor wiring 10 from temperature sensor 8,, in casting resin cylinder 12, extend in the explosion-proof wiring cavity 1, at last in automatic control cabinet again to filling in the powder cylindrical shell 13.
In filling powder cylindrical shell 13, closely fill powder.In casting resin cylinder 12, casting resin, treat the hardening of resin drying after, the wiring of secure fixation electrothermal tube, temperature sensor wiring 10 are sealed in powder simultaneously and fill in the powder cylindrical shell 13.
The fore-end of temperature sensor 8 does not have thermometric pillar 11, and a Ω shape expansion joint is designed, is made in the fore-end relevant position of temperature sensor.
Claims (3)
1. anti-explosion electric heater; Mainly be made up of explosion-proof wiring cavity (1), tube sheet (3), flanged plate (6), electrothermal tube (7), temperature sensor (8), thermometric pillar (11), casting resin cylinder (12), filling powder cylindrical shell (13), venting valve seat (14), it is characterized in that: the mouth of pipe place of electrothermal tube (7) and thermometric pillar (11) is welded on respectively on the flanged plate (6); Powder cylindrical shell (13) is filled in welding on the flanged plate end face; Filling welding venting valve seat (14) on the powder cylindrical shell circle; On filling powder body end surface, weld casting resin cylinder (12); On casting resin cylinder end face cylindrical, weld tube sheet (3); At tube sheet end surface circle welding explosion-proof wiring cavity (1), temperature sensor (8) is to be inserted in the thermometric pillar (11), and the temperature sensor front end is fixing with thermometric pillar and electrothermal tube (7) with clamp (9).
2. anti-explosion electric heater according to claim 1 is characterized in that: in filling powder cylindrical shell (13), closely fill the powder with insulation, heatproof, heat transfer; In casting resin cylinder (12), water and completely have insulation, heatproof, coagulate the firm resin in back.
3. anti-explosion electric heater according to claim 1 is characterized in that: temperature sensor (8) fore-end does not have thermometric pillar (11), and a Ω shape expansion joint is designed, is made in the fore-end relevant position of temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101060815A CN101909371B (en) | 2010-02-05 | 2010-02-05 | Explosion-proof electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101060815A CN101909371B (en) | 2010-02-05 | 2010-02-05 | Explosion-proof electric heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101909371A CN101909371A (en) | 2010-12-08 |
| CN101909371B true CN101909371B (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101060815A Active CN101909371B (en) | 2010-02-05 | 2010-02-05 | Explosion-proof electric heater |
Country Status (1)
| Country | Link |
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| CN (1) | CN101909371B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102752887B (en) * | 2012-07-19 | 2015-04-29 | 镇江力帆防爆电器有限公司 | High-pressure detachable/replaceable anti-explosion electric heater assembly |
| CN102811514A (en) * | 2012-07-23 | 2012-12-05 | 镇江威斯康电器有限公司 | Electric heating element and pipeline electric heater |
| CN103592039B (en) * | 2013-11-11 | 2016-06-08 | 江苏裕兴电器有限公司 | The dismountable temp sensor device of high pressure |
| CN104768246A (en) * | 2015-04-03 | 2015-07-08 | 熊秋红 | Assembly type water heater heating pipe |
| RU2691891C1 (en) * | 2018-07-06 | 2019-06-18 | Акционерное общество "Ордена Трудового Красного Знамени и ордена труда ЧССР опытное конструкторское бюро "ГИДРОПРЕСС" | Unit of tubular electric heaters of equipment |
| CN111879004A (en) * | 2020-08-25 | 2020-11-03 | 镇江裕太防爆电加热器有限公司 | Electric heater for sealing sulfur-containing gas |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2730068Y (en) * | 2004-10-21 | 2005-09-28 | 张向文 | Explosion-proof electric heating device |
| CN2794094Y (en) * | 2005-05-08 | 2006-07-05 | 张文斌 | Explosive-proof electric heater of petroleum oil tank |
| CN201127122Y (en) * | 2007-11-28 | 2008-10-01 | 中国南方航空工业(集团)有限公司 | Explosion-proof electric heater apparatus |
| CN201663709U (en) * | 2010-02-05 | 2010-12-01 | 江苏裕兴电器有限公司 | High-strength safe energy-saving type anti-explosion electric heater |
-
2010
- 2010-02-05 CN CN2010101060815A patent/CN101909371B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2730068Y (en) * | 2004-10-21 | 2005-09-28 | 张向文 | Explosion-proof electric heating device |
| CN2794094Y (en) * | 2005-05-08 | 2006-07-05 | 张文斌 | Explosive-proof electric heater of petroleum oil tank |
| CN201127122Y (en) * | 2007-11-28 | 2008-10-01 | 中国南方航空工业(集团)有限公司 | Explosion-proof electric heater apparatus |
| CN201663709U (en) * | 2010-02-05 | 2010-12-01 | 江苏裕兴电器有限公司 | High-strength safe energy-saving type anti-explosion electric heater |
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| Publication number | Publication date |
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| CN101909371A (en) | 2010-12-08 |
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