How to choose good suppliers of vacuum insulated tubing and casing?
Vacuum insulated tubing and casing plays an increasingly important role in thermal recovery of heavy oil.
How can we find supplier and purchase the insulation pipe with reliable quality and excellent thermal insulation performance?
Here are some key points of choosing a good and qualified supplier of vacuum insulated tubing and casing.
Excellent thermal insulation structure and technology
There are three heat insulation technologies commonly used in vacuum insulated tubing and casing, which are double-layer structure, thermal radiation shielding and thermal convection blocking.
Comprehensive utilization of a variety of heat insulation methods and the structure to ensure thermal insulation performance.
Technical characteristics suitable for high temperature working environment
The prestress compensation technology is adopted in the production of vacuum insulated tubing and casing, which can release the prestress when the inner pipe of the insulated tubing is affected by the steam heat, so as to compensate the temperature difference elongation of the inner pipe and outer pipe and ensure the reliability of the product at high temperature.
When the temperature rises from room temperature to 380℃, or even 400 ℃, the insulation tube can still work normally without any transformation.
Good insulation performance
The annulus space between the inner and outer tubes of the insulation tube needs to be filled with warped insulation material.
Thermal insulation materials need to be heated and dried to prevent the thermal performance and thermal service life of the thermal insulation pipe.
Conventional insulation material should at least include aluminum foil, mesh, fiberglass mesh, getter, and now new insulated material of aerogels, which are better insulated; The sealing annulus is in a vacuum state, and the getter is placed inside, so as to clean the polluted gas and extend the service life of the heat insulation pipe.
Advanced vacuum pumping equipment
The vacuum of heat vacuum insulation casing and tubing depends largely on the vacuum pumping equipment, also known as the vacuum pump.
The three-stage vacuum pump is good equipment and can meet the production requirements of heat insulation pipe, which can reach the requirements of heat insulation performance in short time.
Excellent welding process
Before the vacuum pumping, the heat insulation pipe needs to weld the inside and outside pipes together, and after the vacuum pumping, the vacuum pumping hole needs to be filled, welded abd repaired.
Therefore, the welding process and technology will directly affect the structural strength and heat insulation performance of the heat insulation pipe.
By welding robot or automatic welding process and technology, it will not reduce the risk of the instability of welding quality because of human operation.
High grade of insulation
The most critical parameter for the procurement of thermal insulation pipe is the thermal insulation grade.
The thermal insulation grade ranges from low to high, including A, B, C, D and E. D and E represent two grades with excellent thermal insulation performance, with E being the most excellent.
A variety of optional insulated tube connections are available
The heat insulation pipe has an inner connection, an outer connection, and a direct connection.
According to the requirements of the clearance, select the appropriate connection type of vacuum insulated tubing and casing to ensure oil recovery efficiency.
There are also several issues to be taken into consideration when accepting vacuum insulated tubing and casing
1. Inspection of raw materials
Raw materials include internal and external green pipes, heat insulation materials and other accessories. Select suppliers with reliable and stable quality.
After the raw materials arrive at the factory, the raw materials are inspected to ensure that they are qualified raw materials, and certificates of quality and MTR are required along with the goods.
2. Weld inspection
Comprehensive use of a variety of test methos to ensure the quality of the weld, the common ones of inspection and test are X-ray, γ ray detection, ultrasonic, and magnetic particle inspection.
3. Heat insulation performance test
After the completion of vacuum pumping, vacuum insulated tubing and casing will be test and classified by vacuum degree test, commonly used testing equipment such as apparent thermal conductivity detector, record the tracking number of each heat insulation tube and heat insulation coefficient
4. Thread inspection
Threads determines the running performance of vacuum insulated tubing and casing. Check the thread quality of insulated pipes by using a variety of gauges such as pass, stop and ring gauges.
5. Inspection of appearance quality and spray paint spraying standard
After the production of vacuum insulated tubing and casing, painting and marking shall be carried out in accordance with customer requirements and relevant labeling requirements.
The appearance quality of vacuum insulated tubing and casing affects the customer’s first feeling of acceptance of goods, which is the most intuitive quality control problem.
We must ensure the quality of external pipe and spray paint spraying standard.
Above are some points on the supplier selection of vacuum insulated tubing and casing.
hope it will help you.
Sanjack vacuum insulated tubing and casing, by advanced technology, stable heat insulation performance and long service life, it is your good choice.