Heat exchanger heat exchange performance realtime evaluation method, device, and heat exchange system
A heat exchanger and heat exchange medium technology, applied in the chemical industry, can solve the problems of missing sensors, inability to calculate and monitor, and inability to implement on-site installation of sensors, so as to avoid poor work.
Active Publication Date: 2014-11-05
BLUESTAR BEIJING TECH CENT
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Problems solved by technology
[0004] The calculation of the efficiency of heat exchange equipment itself is not complicated, but due to the lack of on-site sensors for heat exchangers in most chemical plants in my country, it is impossible to simply rely on theoretical formulas to complete the calculation and monitoring of efficiency; at the same time, due to the non-stop On-site installation of the sensor cannot be realized under the state
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Embodiment Construction
[0023] Embodiments of the invention are described in detail below, but the invention can be practiced in many different ways as defined and covered by the claims.
[0024] The present invention is based on the working status information of the real-time operation of the heat exchanger. Firstly, it is judged whether the chemical plant is in the normal driving state; Whether the real-time detection data of material inlet flow rate and inlet and outlet temperature are complete. In this way, according to the relevant data that can be obtained, the performance evaluation index can be calculated in real time within the set calculation cycle. When the calculated evaluation index is lower than the index when the heat exchanger is in a healthy operating state, an alarm signal is triggered, thereby affecting the chemical industry. Real-time and meaningful monitoring and evaluation of the working status of the heat exchanger in the continuous production process.
[0025] As a first aspe...
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The invention relates to a heat exchanger heat exchange performance realtime evaluation method, device, and a heat exchange system. The method comprises the following steps: (1) judging whether the heat exchange medium outlet temperature, heat exchange medium inlet temperature, material outlet temperature and material inlet temperature of a heat exchanger are complete or not, if the temperatures are complete, calculating the heat exchange performance of the heat exchanger in real time according to the medium inlet temperature, material inlet temperature, and calculation period; (2) judging whether the material inlet flow and the heat exchange medium outlet temperature are complete or not, if the result is positive, calculating the heat exchange performance of the heat exchanger in real time according to the material inlet flow and the heat exchange medium outlet temperature; (3) according to the calculated heat exchange performances, displaying the change tendency of the heat exchange performance in real time, and giving an alarm when the heat exchange performance is lower than a preset threshold value. The method and device can carry out realtime monitoring and evaluation on heat exchange performance so as to avoid the reduction of production efficiency and accidental breakdown because of the bad performance of a heat exchanger.
Description
technical field [0001] The invention relates to the field of chemical industry, in particular to a method, device and heat exchange system for real-time evaluation of heat exchange performance of a heat exchanger. Background technique [0002] Heat exchanger is an important equipment to realize heat exchange and transfer in the production process of petrochemical industry. After the heat exchanger has been used for a long time, the dirt accumulated between the heat transfer tube walls will affect the heat transfer capacity of the heat exchanger and cause serious energy waste. If the unplanned maintenance or shutdown of the device is caused due to insufficient heat exchange capacity or corrosion and leakage of the heat exchanger, it will cause irreparable huge economic losses to the enterprise. Therefore, real-time monitoring of the health status of the heat exchanger is of great significance. [0003] figure 1 A schematic diagram showing the distribution of temperature and...
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IPC IPC(8): G01N25/20
Inventor 苏岳龙于凤琴陈强黄玲梁桂花庞力衡
Owner BLUESTAR BEIJING TECH CENT