An electrothermal constant temperature pipeline and temperature control method
A pipeline and constant temperature technology, applied in the direction of temperature control using electric methods, auxiliary controllers with auxiliary heating devices, etc., can solve the problems that affect the economic benefits of enterprises, increase costs, and waste heat energy.
Active Publication Date: 2018-08-21
JIANGSU GAOJING MECHANICAL & ELECTRICAL EQUIPMENT CO LTD
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Problems solved by technology
The first method mentioned above is a one-time investment, and the second method requires continuous heat energy input, which will inevitably increase the cost and affect the economic benefits of the enterprise
Furthermore, a 10-kilometer-long crude oil pipeline only has a certain section of 100 meters or is affected by terrain / geomorphology, which is prone to freezing and condensation. If the crude oil in the entire pipeline is heated up, unnecessary heat energy will be wasted
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[0010] Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail. figure 1 is a block diagram of the principles of the invention. In the figure, the multi-point temperature data collection comes from four thermocouple tubes 1 that are uniformly distributed radially outside the pipeline 5 in the same section. The axes of 5 are equidistantly arranged. The working principle is as follows: when local freezing occurs, the wall temperature of the pipeline 4 will decrease accordingly; The pressure of the medium in the front increases due to resistance, and the pressure in the back becomes smaller. When the data processor 6 receives that the temperature value of the thermocouple tube 1 is lower than the set value of the data processor 6, or when the data processor 6 receives When the pressure value from the electric display pressure gauge 13 deviates from the set value of the data processor 6 within a certain range, the data proc...
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The invention relates to an electric heating constant-temperature pipeline and a temperature control method. The electric heating constant-temperature pipeline and the temperature control method are mainly used for conveying a liquid medium which can be coagulated easily in a low-temperature environment, such as water, crude oil and chemical liquid materials. The electric heating constant-temperature pipeline is characterized in that constant-temperature electric heating tapes (3) are closely fixed on the outer wall of a pipeline (5) longitudinally; thermocouple tubes (1) are uniformly distributed on the outer wall of the pipeline (5) along the radial direction of the pipeline (5); the inner ends of the thermocouple tubes (1) contact with the pipeline (5); the outer ends of the thermocouple tubes (1) protrude out from a heat insulation shell (5); the inner end of a pressure measuring tube (11) is arranged in the pipeline (5); the outer end of the pressure measuring tube (11) is connected with an electric display pressure gage (13); the middle section of the pressure measuring tube (11) is provided with a valve (12); the signal lines of the thermocouple tubes (1) are connected with a data processor (6); the constant-temperature electric heating tapes (3) are connected with the data processor (6) through power source output conductors; and the signal line of the electric display pressure gage (13) is connected with the data processor (6). With the electric heating constant-temperature pipeline and the temperature control method of the invention adopted, the problem of energy waste caused by large-range heating of local congelation can be solved.
Description
technical field [0001] The invention relates to a heat preservation structure and a temperature control method of a pipeline, in particular to an electrothermal constant temperature pipeline and a temperature control method Background technique [0002] In many industrial and civil fields, it is often necessary to carry out pipeline transportation for various liquid media. This is a high-efficiency transportation method, especially suitable for those continuous and large-scale transportation of liquid media, such as: petrochemical industry is used for long-distance large-scale transportation of crude oil and chemical products. Hot water and steam transportation in water supply projects and heating projects. This widely used liquid medium conveying process also has many technical problems that need to be further solved in production practice, so that this process technology will continue to develop and improve. For example, when crude oil and water are transported by pipeli...
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IPC IPC(8): G05D23/30
Inventor 冯国川于守清刘文萍姜乐向阳王先民薛长兰李阳胡延军
Owner JIANGSU GAOJING MECHANICAL & ELECTRICAL EQUIPMENT CO LTD