详细内容

N. Piping thermostat with hot cable

时间:2017-07-13 15:10:06   来源:   作者:   点击:

Details:
1. Single-phase constant power electric tropical
Product structure and working principle
Power bus for two parallel insulated copper wire, insulation layer, the heating wire winding, at regular intervals and the heating wire (that is, "hot day") and bus connections, form a continuous parallel connection resistance. After the bus is energized, the parallel resistance heats up, thus forming a continuous heating zone.
Product features and applications
Constant power tropical unit length is constant, and the longer it is used, the greater the power output is. The electric tropical zone can be arbitrarily cut according to the actual length. In addition, it is soft and easy to lay on the surface of the pipe. The layers of the electric tropical outer layer not only have heat transfer and heat dissipation, but also improve the overall strength of the electric tropical zone, as well as the safety grounding line.
The constant power electric tropical and thermostat can maintain the medium temperature in the pipe.
The enhanced electric tropical zone is a layer of insulating layer on the outside of the ordinary electric tropical zone. The rest of the structure and principle are the same as the common electric tropical. It is more suitable for the use of explosion-proof and underground or corrosive gases.
This electric tropical zone is suitable for heating, freezing and heat preservation of pipe, valve and pump body, or maintaining the process temperature of the instrument.
Explosion-proof instructions:
The single-phase constant power electric tropical zone is designed and manufactured according to gb3836.1-83 and gb3836.3-83, which is the explosive environment of explosion-proof electrical equipment "general requirements" and "increasing an electrical equipment". Explosive-proof grade for "e Ⅱ T3", the product has no secondary sex, the requirements of the test, and through the closed electric heater with explosion-proof electrical accessories, applicable to the impact from outside force up factory area, the area of the T3 group sites with explosive air mixture. The product is tested by the national legal explosion-proof apparatus.
2. Three-phase constant power and electric tropical
Product structure and working principle
FIG. : three parallel insulated copper wire is the power bus, and the inner insulation layer is wound by winding the wire, and each distance (i.e., "hot joint length") of the heater is followed by the power bus line AB- bc-ca - AB... Repeated circular connection, forming continuous parallel resistance in every two phases. When the bus is connected to three phases, the parallel resistance heats up simultaneously, thus forming a continuous three-phase power supply plus tropical.
Product features:
The same characteristics of the lardp3-j3 type electric tropics with the same characteristics as the lardp2-j3 single-phase electric tropics have the following advantages:
Single-phase electric heating using ℃ before long, the end voltage drop is severe, causing the deterioration of the end part of the power. Phase when the conductor cross section at the same time, the same as three-phase with rated voltage higher than that of single phase with its biggest use long ℃ than that of single phase with a larger increase, so use can reduce the area of three phase power supply and reduce the engineering cost.
In the case of large-scale application of electric tropical, the load can be balanced.
Three phase with three core, make the electric heating more hasten is flat, reduces the surface heat load, increase the heat transfer area of pipeline, improve the efficiency of the electric heating of heat transfer and maintain highest temperature ℃.
The reinforced three-phase constant power electric tropical zone is a layer of insulation layer in the outer layer of the ordinary three-phase constant power, which has the same structure and principle as the normal electric tropics. But enhanced product anticorrosion ability, strong mechanical ℃ higher. It is suitable for use in explosion-proof and underground or corrosive gases.
Application situation
The lardp3-j3-type three-phase constant power and electric tropical zone can be used to solve the antifreeze and heat preservation of pipes and valves, except for the single-phase constant power and electric tropics of the lardp2-j3 type. The specific application situation is the same as the lardp2-type electric tropics. However, it is pointed out that the three-phase belt is more economical, more reasonable and can show the advantages of the three-phase belt when the long distance and large diameter pipe is used for thermal insulation.
Explosion-proof instructions:
The three-phase constant power electric heating system is designed and manufactured according to gb3836.1-83 and gb3836.3-83, which is the explosive environment of explosion-proof electrical equipment "general requirements" and "increasing the electrical equipment". Explosive-proof grade for "e Ⅱ T3", the product has no secondary sex, the requirements of the test, and through the closed electric heater with explosion-proof electrical accessories, applicable to the impact from outside force up factory area, the area of the T3 group sites with explosive air mixture. The product is tested by the national legal explosion-proof apparatus.
3. High temperature constant power tropical
LARDP2 - J2 constant power type high temperature electric heating, its working principle, product structure and application LARDP2 - J3 constant power electric heating and same, the difference is the insulation waterproof adopted high temperature resistant glass fiber and high temperature resistant F46 PFA fluorine plastic, fluid to maintain ℃ temperature can reach 180 ℃ to 250 ℃, it is especially suitable for asphalt, heavy viscous oil pipeline heat tracing, the product can be used in the factory area, the area of explosion gas mixture T3 group.
4. Marine constant power electric tropical
Marine constant power electric tropical structure. Overall dimensions and working principle of the same as the LARDP2 type and LARDP3 type electric heating, it is mainly used in ocean shipping, offshore oil drilling platform or other maritime under the condition of bad environment of explosive gas environment.
Product features: ship electricity tropical besides LARDP2 and LARDP3 all electric tropical characteristics, but also has good anticorrosive property, prevent mould to grow, and oil resistant, flame retardant and good resistance to aging of insulation more reliable features, it is LARDP2 type and LARDP3 type electric heating based on advanced technology and strict quality assurance system is made of high quality products, every batch of products by the national ship certification testing. Used with Marine electrical accessories, available in ocean shipping and explosive gas occasions of factory area, area of T3 category of safe use in harsh environment temperature, explosion-proof Ⅱ T3 "e", such as explosion-proof certificate no. : single-phase electric tropical GYB99328, three-phase electric tropical GYB99307.
5. Self-limiting electric heating
Our company has introduced ISOPAD products from UK, and ISOPAD is one of the world famous manufacturers of electric heating products. This product adopts BBS standard manufacturing production, the product passes European EECS authentication, the product level is international first-class.
This self-limiting electric power attenuation is small and the service life is long. It can adjust the output power according to the actual requirement of heat output, and this kind of control temperature is everywhere in the product length, even if the electric tropical cross installation, it does not produce the cross point overheating. It is suitable for heat tracing system in a complex thermal field.
6. Series electric heating
LARDC series electric heating is a kind of heating element by conductor of electric heat tracing products, namely on the conductor of a certain resistance by electric current, the conductor gives joule heat, because of the conductor resistance of unit length and by electric current, on the whole length is the same, calorific value is the same everywhere, not such as parallel type electric heating with increases in use of the length of the tail end power cut, so it is mainly suitable for long distance pipeline, thermal insulation, with a power source, can be up to 3.4 km pipeline heat tracing, use this product, our company technical department can provide advisory services, to confirm the design.
 

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