Sinochem Xingzhong Petroleum Transfer (Zhoushan) Co., Ltd. Xingzhong Reservoir Area To ensure production operations, the oil depot uses steam heating to maintain the temperature of oil in storage tanks and pipelines. The steam consists of a 20t boiler and 2 10t boilers. Boiler system production. In recent years, the company has increased the management requirements for energy measurement in accordance with the lean management concept. In order to scientifically control the steam system and improve the steam efficiency, it is necessary to accurately measure and statistically analyze the use of steam. Before the reservoir area steam pipe network using a target flow meter for flow data collection, and then rely on manual meter reading data summary statistics, but because the target flow meter is vulnerable to the steam pipe "water hammer" phenomenon, the failure is very frequent, Moreover, the method of manual meter reading is inefficient and has poor real-time performance. The statistical analysis results are not obvious.
For this purpose, the reservoir area was installed with a new steam flow meter and wireless transmission technology was used to establish a steam flow collection system, which was then uploaded in real time to the host computer software for statistical analysis and reporting. The establishment of the system provides real-time and reliable data support for the company's energy management. It also realizes real-time monitoring of the steam system in the reservoir area, which is conducive to the control of steam use and promotes energy conservation and consumption reduction.
1 Systematic overall structure design The steam flow collection system installed a total of 52 steam flow meters in front of all the insulated tanks in the tank area, boiler mains outlets and subcontracting lines. Smart wireless technology was used to collect data from the flowmeters in 4 areas. The wireless gateway transmitted to this area is uploaded to the upper computer to display various data through the man-machine interface. The working principle of wireless traffic collection system is shown in Figure 1.
1.1 Integral steam flow meter Through in-depth investigation, the 3051SFC series integrated multi-parameter orifice flowmeter was selected. The flowmeter has an accuracy of 1.25% and a turndown ratio of 14:1. It features high accuracy, wide range ratio, and good stability. Online temperature, pressure and flow can be detected online 3 variables, at the same time in the header automatically compensated temperature and pressure density, mass flow and heat display, especially for steam metering systems. Due to the integral casting process and integrated installation, the flowmeter has a high impact resistance and effectively solves the impact of steam on equipment and water hammer problems.

1.2 Smart Wireless Adapter Each 3051SFC flow meter is equipped with a THUM775 smart wireless adapter and becomes a wireless node. The wireless adapter THUM (the hart upgrade module) is a microprocessor-based smart device that is developed specifically for wired HART instruments. It can simultaneously convert the instrument's four process parameter variables and device diagnostic information to WirelessHART wireless signal output. Standard WirelessHART wireless gateway communication. The wireless adapter is connected to the 4 to 20 mA loop, which draws power from the loop but does not have any effect on the loop. Even if the adapter fails, the loop current remains constant and no battery is needed.
1.3 Smart Wireless Gateway The wireless gateway plays an intermediate role in the wireless data system. It is the link between the field instrument and the host computer, and it implements the three functions of network management, data management, and device management. The wireless gateway in the system selected 1420 smart wireless gateways. Each gateway manages wireless nodes within its jurisdiction and can manage up to 100 wireless nodes. The wireless gateway can automatically establish a grid architecture network based on location distribution. Once the network is established, it will automatically find the best way to bypass fixed or temporary obstacles, achieve high security and reliability of wireless data collection, and use standard interfaces to collect The process parameters and equipment status data are accurately and reliably fed into the host computer to realize the monitoring of the on-site flow meter and process parameters. It serves as an interface between the on-site smart wireless instrument and the host computer interface, and supports Modbus and OPC protocols. The smart wireless gateway has features such as high security performance, scalability, and reliable data transmission. The 2.4GHz public frequency band is used, and the communication path is redundant. The data reliability is greater than 99%.
2 Application advantages of wireless technology The wireless network used in on-site wireless steam flowmeters is self-organizing, self-adapting, and self-repairing. When the communication path is disturbed, the network wireless device can automatically select another redundant path for communication, ensuring the Normal communication of various parameters. Therefore, wireless technology has great advantages for steam flow measurement.
1) Save construction and installation costs. Due to the large area of ​​the reservoir area, the number of steam flow meters to be installed is large, scattered, and distant. If wired data transmission technology is used, the number of communication cables required is extremely high, and the construction cost for cable laying is also extremely high; Technology, without the need for a communication cable connection, can significantly save the labor costs of cable materials and construction. In addition, since wireless gateways are used for direct data transmission, there is no need to purchase additional hardware for automatic control systems.
It also saves a lot of installation costs.
2) Accelerate the progress of project construction. Wireless technology is simple to construct on the spot. It is only necessary to install the wireless adapter on the integrated steam flow meter. Without manual intervention, the network can be set up automatically, which saves a lot of construction time compared to using the wired method. The project schedule is greatly advanced.
3) Simple maintenance. Because the flow meter and the wireless gateway all have the fault alarm self-diagnosis function, once the equipment fails, a warning message will appear on the upper computer, and the maintenance personnel can directly find the fault point and perform the processing. In addition, because there are no control cabinets, cables, and other intermediate data acquisition equipment and materials, the failure confirmation procedure is greatly simplified, facilitating routine maintenance. Moreover, wireless networks have very good expansion compatibility. If you need to increase measurement points, you can automatically join a smart network by installing a wireless adapter.
3 The design of energy management software is based on all the basic data collected by the field device through the wireless gateway. The energy management software is customized and developed. The system uses the Cimplicity configuration software to design the monitoring interface of the host computer and draw the graphical interface.
The management personnel can use the system to view the entire area of ​​the steam energy consumption and boiler efficiency in real time, and collect statistics and analysis.
1) According to the steam flow data main screen, you can clearly and accurately see the operating status of the steam flow meter before each holding tank and the instantaneous flow rate, accumulated heat, temperature, pressure and other real-time parameters collected by the equipment to facilitate the management of the reservoir area. Confirm the status of tank steam use, timely close the steam valve that needs to be closed, save steam use, and achieve the purpose of cost reduction and efficiency increase.
2) According to the production conditions in the reservoir area, the steam operation mainly cooperates with the oil discharge operation in the reservoir area. Before the oil is discharged from the storage tank, steam heating is required. After the oil is discharged, the steam operation is completed. Therefore, in order to facilitate financial accounting, customers need to be divided into batches to calculate the energy consumption of the work. Through the background statistics, the system can calculate the steam energy consumption data for each job, so that the energy consumption of the latest operation of each holding tank and the total energy consumption of the month can be clearly seen.
3) In addition to the system can view all kinds of data in real time, you can also review the historical data collected, you can check the specific parameters of a single device, including the operating status, temperature status, steam temperature, instantaneous flow, pressure, instantaneous heat, batch 15 parameters such as sub-heat. In addition, historical trend curves of parameters such as instantaneous flow rate, accumulated heat, steam temperature, and steam pressure can also be visually observed. Based on these historical data, the company's management can trace the historical operating conditions of the steam and assess the work of the operators.
4) In addition to energy management software, in order to facilitate financial personnel to directly analyze the data, the system has specially developed the Excel data export report. In the energy consumption report, you can query the current total energy consumption or total flow and loss values, you can also query Each month's energy consumption or flow of each device, you can also query the energy consumption data of multiple batches of each device.
The system saves a large amount of process data, providing a large amount of data support for future summary statistics, comparative analysis and cost accounting.
The wireless steam flow collection system has a short construction period, low investment, stable operation, and simple maintenance. The company’s management staff at all levels can use the office network to check the operation status of the entire steam system in real time. Through statistics and analysis of data, the company can check the pipeline network equipment availability rate, optimize the steam management and control strategy, and achieve energy conservation, emission reduction and efficiency reduction for the company. Sustainable development. The successful application of the system in the Xingzhong Reservoir area shows that the wireless steam flow collection system is particularly suitable for large-scale oil storage companies with large area [10], large number of meters and long distances.

Vertical Grill

1. An open structure of heating elements with half round stainless steel

reflectors for an optimal use of energy.

2. The Gyros will change direction automatice, if there is a force.

3. Removable and detachable parts for easy clean.

4. The particular broiling result is obtained by alternating heating and

cooling down. The meat fibres do not harden, and the gravy is flavoured

by the spices. This cooking mode results in very healthy meat.

5. The vertical grill allows broiling meat layers, shashlik, party sausages,

poultry and fish with few attachments.

6. The Skewers and Gyros go in opposite direction so that the food could

be heated more well.

7. Power: 1400W

Vertical Electric Grill,Electric Vertical Grill,Vertical Bbq Grills,Indoor Vertical Grill

Housoen Electric Manufacture Co., Ltd. , https://www.housoenappliances.com