the high pressure Waterjet Pump is the heart of the whole Water Jet Cutting Machine. It pressurizes the finely filtered water to 300Mpa-400Mpa-620mpa (45000psi-60000psi-90000psi), and then passes through the nozzle to form a jet of about three times of the sound speed, transforming its pressure into concentrated kinetic energy, so as to cut any material.
we now have
1. 380mpa Direct Drive Pump. ( Crankshaft Pump)
2. 420mpa intensifier pump. (60000psi) pump
3. 620mpa intensifier pump. (90000psi pump)
The direct drive pump, also known as the three-cylinder pump, as the name implies, directly drives the crankshaft with three pistons to rotate, resulting in super high water pressure. The design of the direct drive pump originated in the United States, gradually matured and occupied a significant weight in the water cutting industry. More than 20% of the waterjets in the market use direct drive. waterjet pump Waterjet Pump,Direct Drive Pump, Crankshaft Pump, Water Pump HARBIN QIAN FAN XI FENG MACHINERY CO.LTD , https://www.waterjetwamit.com
The building intercom system serves as the last barrier to ensure the safety of the residence and is regarded as the “guardian god†of the home life. The optional building intercom system should be selected according to different residential structures, community distribution and functional requirements. Some of them are suitable for non-enclosed residential buildings and can implement call, intercom and unlock functions, and have a luminous indication function; Applicable to various residential structures from the low-rise to the high-rise; closed management of the community can use an indoor unit with security alarm function, users can install the door magnet, infrared probe, smoke alarm, gas leak alarm device and so on.
In order to take into account the needs of different users and economic conditions, the color of the visual system is compatible with black-and-white machine extensions. Users can use color machines or black-and-white machines, or use intercom indoor units without visual function; Cabling, according to different cell distribution, large system bus can use star-type wiring and ring-type wiring.
In order to completely solve the large-system signal attenuation, dual-phase video dual-phase transmission on the same cable can use intelligent signal booster. Closed cells can also set up a management center. The management center machine can store alarm records, and can check the type, time and building number of the alarm occupant and the number of the room at any time. The center can monitor and call the entire district and building entrance.
Therefore, the use of building intercom systems must be selected according to the characteristics of their own residential area, must not be blind. To achieve the highest performance-cost ratio, the maximum use of the system's features.
Second, the basic requirements of intelligent community
As the new darling of the 21st century, the intelligent residential community has its own requirements. According to the regulations of the Ministry of Construction, the current intelligent residential community has six requirements: the residential community has established a computerized management center, and water, electricity, gas and other automatic measurement, Charges; closed residential quarters, the implementation of automatic monitoring and management of security systems; residential fire, harmful gas leakage automatic alarm; residential building intercom and emergency call system; the implementation of centralized management of key equipment and facilities in the residential area, its operational status Implement remote monitoring.
The general intelligent community includes the following subsystems: residential monitoring system; electronic patrol system; three-table automatic copying system; closed-circuit television monitoring system; neighborhood perimeter boundary monitoring system; access control non-contact card system; building visible/non-visible Intercom system.
It can be seen that the intelligentization of residential communities is based on high technology, using advanced equipment and management methods, using computers and related latest technologies, using modern computer technology, sensing technology, transmission technology, and traditional building structures. Network technology, automatic control technology and other advanced technologies to improve efficiency, reduce losses and save costs. Continuously improve the degree of automation in property management, security and information services in residential communities, and provide residents with a safe, convenient and comfortable living space.
Third, the intelligent community must have five safety nets
On the surrounding walls and fences of closed residential quarters, advanced active infrared intrusion detectors are installed. The infrared light beam is used to close the top of the perimeter. Once someone enters through the wall, the electronic map of the monitoring center can rapidly display the location of the incident. An audible and visual alarm was issued to remind the on-duty personnel to promptly handle the police. The on-duty personnel call the nearest patrol personnel through the radio station according to the location of the alarm displayed on the electronic map.
The second line of defense television monitoring system. In the residential area, the gates, car park entrances, elevator cars, and main passages in the community, television monitoring systems are installed, and 24-hour surveillance and video recording are performed. The monitoring center personnel can view the channels at any time through the TV screen. In case of a case, it can provide the police with valuable image evidence.
The third line of defense electronic patrol system. The recording devices of the electronic patrol system have been set up scientifically and scientifically in front of houses, green belts, and walkways throughout the community. The recording device can record the time of each patrol officer’s patrol before the device in a detailed and accurate manner, and “selflessly†supervises every patrol personnel to complete the patrol tasks according to the scheduled patrol lines and time intervals, effectively ensuring that the patrolling personnel are in accordance with the regulations. Time to reach the alarm point of any location in the community.
The fourth line of defense building intercom system. Door-to-door intercom systems are installed at the entrances and exits of residential quarters, at the entrances to residential buildings, and at the iron gates of entrances to each building. When visitors come to the entrances and exits of the community, the property security personnel call the interviewed users, confirming that they are at home and confirming visitors by the residents. After the identity of the visitor, the visitor can enter the community. After entering the community, the visitor clicked on the user's room number at Loudongkou, and through the approval of the owner, the owner opened the bottom-level electronic security door through remote control to allow the visitor to enter. The intercom device is also networked with the cell monitoring center and can be contacted at any time.
The fifth line of defense anti-theft alarm system. Each household in the residential area has installed a home alarm or emergency alarm (help) networked terminal equipment. The detectors were installed on the balconies and windows of the first and second floor occupants. Once the balcony and windows were illegally invaded, the control center could immediately display the alarms so that the patrols could quickly go to the alarm point for disposal. At the same time, emergency alarm (rescue) buttons are also installed in concealed places such as bedrooms and living rooms in each household. Once the owner encounters danger or other help, they can press the button and pass it to the control center. The control center can also be networked with the police center.
The supercharged oil pump is driven by oil pressure to form a larger pressure. The oil pump is formed by ultra-high pressure. Therefore, the fittings are generally made of hard metal, and the failure rate is relatively low in use. The waterjet of the supercharged oil pump is the most widely used waterjet booster type.
In terms of pressure, the pressure of the booster pump is generally higher than that of the direct drive pump, so it can cut a thicker metal material and use a wider surface. Although the water jet of the direct drive pump cannot form such a high pressure, but in the tile More cost-saving in cutting, food, and cleaning operations.
In terms of cost, the water jet of the booster oil pump will need more consumption. The ultra-high pressure operation requires about 30 degrees of electricity per hour. The photoelectric cost is also very large in the month, and the direct drive pump is very economical, every hour. About ten degrees of electricity, only one-third of the cost of pressurized hydraulics. In addition to the cost of the equipment, the hydraulic pressure is much higher than the cost of the direct drive pump equipment.
Tell you from several aspects what a building intercom system is
First, what kind of building intercom system is best for you?