Product Description
Cryogenic Vacuum Submersible Liquid LNG Air Pump
Liquids pumped:
LN2,LAr,LNG
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Technical Parameters
1. flow rate: 2-20 m3/h
2. Lift: 30-300M
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Application
LNG gas filling stations,LNG gas receiving station
Cylinder filling, Tank filling
Cryogenic liquid transfer
Zero leakage case
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Optional configuration
Vacuum adiabatic set
Frequency converter
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Features
1.The pump and motor submerged totally in the liquid to reduce the liquid lost from the heat and make the quick start possible.
2.Vaccum adiabatic set prevent the liquid from the heat outside to make the pump work well
3.Special design with no seal set and submerged reduce the chance of maintain
4.The vertical type makes the motor a better performance and long lifetime.
5.Motor with frequency converter expand the working range.
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Instruction
The adjustable frequency speed motor expanded the work range, so the cryogenic submerged pump is widely used by gas filling stations and LNG terminals, for cylinder filling and LNG delivery. The applicable gases are LNG, liquid nitrogen and liquid argon.
WHAT WE CAN SUPPLY?
We specialize in producing air separation plants, CO2 recovery plants, cryogenic liquid storage tanks, ISO tanks, semi-trailer tankers, vaporizers, gas filling stations, cylinders and dewars, dry ice machines, compressors and cryogenic pumps etc.
Our Company
HangZhou CZPT General Equipment Co.,Ltd. is a wholly owned subsidiary of ZheJiang Air Separation Plant Group Company-the second largest gas equipment producer in China.
In the gas equipment field, we are proficient in both design and manufacture, enjoying a good reputation worldwide. By our consistent efforts, we turned the invisible air into visible brilliance. With 40 years of experience, we can provide customers with a complete range of products and the most professional services.
Taking advantage of the group company structure, we have an in-depth and comprehensive understanding of market. Customers can get all they need at one-stop purchase.
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| Oil or Not: | Oil Free |
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| Structure: | Piston Pump |
| Exhauster Method: | Centrifugal Pump |
| Usage: | Pump |
| Flow: | 500-1500L/H |
| Medium: | LNG |
| Customization: |
Available
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What Are the Key Components of a Piston Vacuum Pump?
A piston vacuum pump consists of several key components that work together to create a vacuum. Here’s a detailed explanation of these components:
1. Cylinder:
– The cylinder is a cylindrical chamber where the piston moves back and forth.
– It provides the housing for the piston and plays a crucial role in creating the vacuum by changing the volume of the chamber.
2. Piston:
– The piston is a movable component that fits inside the cylinder.
– It creates a seal between the piston and cylinder walls, allowing the pump to create a pressure differential and generate a vacuum.
– The piston is typically driven by a motor or an external power source.
3. Intake Valve:
– The intake valve allows gas or air to enter the cylinder during the suction stroke.
– It opens when the piston moves downward, creating a vacuum and drawing gas into the cylinder from the system being evacuated.
4. Exhaust Valve:
– The exhaust valve allows the expelled gas to exit the cylinder during the compression stroke.
– It opens when the piston moves upward, allowing the compressed gas to be expelled from the cylinder.
5. Lubrication System:
– Piston vacuum pumps often incorporate a lubrication system to ensure smooth operation and maintain an airtight seal between the piston and cylinder walls.
– Lubricating oil is introduced into the cylinder to provide lubrication and help maintain the seal.
– The lubrication system also helps to cool the pump by dissipating heat generated during operation.
6. Cooling System:
– Some piston vacuum pumps may include a cooling system to prevent overheating.
– This can involve the circulation of a cooling fluid or the use of cooling fins to dissipate heat generated during operation.
7. Pressure Gauges and Controls:
– Pressure gauges are often installed to monitor the vacuum level or pressure within the system.
– Control mechanisms, such as switches or valves, may be present to regulate the operation of the pump or maintain the desired vacuum level.
8. Motor or Power Source:
– The piston in a piston vacuum pump is typically driven by a motor or an external power source.
– The motor provides the necessary mechanical energy to move the piston back and forth, creating the suction and compression strokes.
9. Frame or Housing:
– The components of the piston vacuum pump are housed within a frame or housing that provides structural support and protection.
– The frame or housing also helps to reduce noise and vibration during operation.
In summary, the key components of a piston vacuum pump include the cylinder, piston, intake valve, exhaust valve, lubrication system, cooling system, pressure gauges and controls, motor or power source, and the frame or housing. These components work together to create a vacuum by reciprocating the piston within the cylinder, allowing gas to be drawn in and expelled, while maintaining an airtight seal. The lubrication and cooling systems, as well as pressure gauges and controls, ensure smooth and efficient operation of the pump.
How Does the Cost of Piston Vacuum Pumps Compare to Other Types?
The cost of piston vacuum pumps can vary depending on factors such as the pump’s size, capacity, features, and the specific manufacturer or supplier. Here’s a detailed explanation of how the cost of piston vacuum pumps compares to other types:
– Piston vacuum pumps generally fall into the mid to high range in terms of cost compared to other types of vacuum pumps.
– Compared to rotary vane pumps, which are another common type of vacuum pump, piston pumps are often more expensive.
– This higher cost can be attributed to several factors:
– Design and Construction: Piston vacuum pumps typically have a more complex design and construction, involving precision machining and tighter tolerances. This can contribute to higher manufacturing costs.
– Performance and Features: Piston pumps often offer higher performance and greater pumping capacity compared to other types of pumps. They may also incorporate additional features such as variable speed control or advanced control systems, which can increase the cost.
– Robustness and Durability: Piston pumps are known for their durability and ability to handle demanding applications. They are designed to withstand high pressures and heavy-duty operation, which can contribute to their higher cost.
– On the other hand, when compared to more specialized or advanced vacuum pump technologies such as turbomolecular pumps or cryogenic pumps, piston vacuum pumps are generally more cost-effective.
– Turbomolecular pumps, which are used in high-vacuum applications, are typically more expensive due to their complex design, high rotational speeds, and advanced materials used.
– Cryogenic pumps, which rely on extremely low temperatures for vacuum creation, are also typically more expensive due to the specialized cooling systems and cryogenic components involved.
– It’s important to note that the cost of any vacuum pump can also vary depending on factors such as the required pumping capacity, ultimate vacuum level, and specific industry or application requirements.
– When considering the cost of a piston vacuum pump, it is crucial to assess the overall value it provides in terms of performance, reliability, durability, and suitability for the intended application.
– Additionally, factors such as maintenance requirements, energy efficiency, and the availability of spare parts and service support should also be taken into account when evaluating the cost-effectiveness of a piston vacuum pump.
In summary, piston vacuum pumps generally fall into the mid to high range in terms of cost compared to other types of vacuum pumps. While they may be more expensive than rotary vane pumps, they are often more cost-effective compared to specialized technologies such as turbomolecular pumps or cryogenic pumps. The specific cost of a piston vacuum pump can vary based on factors such as size, capacity, features, and manufacturer.
What Are the Differences Between Single-Stage and Two-Stage Piston Vacuum Pumps?
Single-stage and two-stage piston vacuum pumps are two common types of pumps used for creating a vacuum. Here’s a detailed explanation of their differences:
1. Number of Stages:
– The primary difference between single-stage and two-stage piston vacuum pumps lies in the number of stages or steps involved in the compression process.
– A single-stage pump has a single piston that compresses the gas in one stroke.
– In contrast, a two-stage pump consists of two pistons arranged in series, allowing the gas to be compressed in two stages.
2. Compression Ratio:
– Single-Stage: In a single-stage piston vacuum pump, the compression ratio is limited to the single stroke of the piston. This means that the pump can achieve a compression ratio of approximately 10:1.
– Two-Stage: In a two-stage piston vacuum pump, the compression ratio is significantly higher. The first stage compresses the gas, and then it passes through an intermediate chamber before entering the second stage for further compression. This allows for a higher compression ratio, typically around 100:1.
3. Vacuum Level:
– Single-Stage: Single-stage piston vacuum pumps are generally suitable for applications that require moderate vacuum levels.
– They can achieve vacuum levels up to approximately 10-3 Torr (millitorr) or in the low micron range (10-6 Torr).
– Two-Stage: Two-stage piston vacuum pumps are capable of reaching deeper vacuum levels compared to single-stage pumps.
– They can achieve vacuum levels in the high vacuum range, typically down to 10-6 Torr or even lower, making them suitable for applications that require a more extensive vacuum.
4. Pumping Speed:
– Single-Stage: Single-stage pumps generally have a higher pumping speed or evacuation rate compared to two-stage pumps.
– This means that single-stage pumps can evacuate a larger volume of gas per unit of time, making them suitable for applications that require faster evacuation.
– Two-Stage: Two-stage pumps have a lower pumping speed compared to single-stage pumps.
– While they may have a slower evacuation rate, they compensate for it by achieving deeper vacuum levels.
5. Applications:
– Single-Stage: Single-stage piston vacuum pumps are commonly used in applications that require moderate vacuum levels and higher pumping speeds.
– They are suitable for laboratory use, vacuum packaging, HVAC systems, and various industrial processes.
– Two-Stage: Two-stage piston vacuum pumps are well-suited for applications that require deeper vacuum levels.
– They are commonly used in scientific research, semiconductor manufacturing, analytical instruments, and other processes that demand high vacuum conditions.
6. Size and Complexity:
– Single-Stage: Single-stage pumps are generally more compact and simpler in design compared to two-stage pumps.
– They have fewer components, making them easier to install, operate, and maintain.
– Two-Stage: Two-stage pumps are relatively larger and more complex in design due to the additional components required for the two-stage compression process.
– They may require more maintenance and expertise for operation and servicing.
In summary, the main differences between single-stage and two-stage piston vacuum pumps lie in the number of stages, compression ratio, achievable vacuum levels, pumping speed, applications, and size/complexity. Selecting the appropriate pump depends on the desired vacuum level, pumping speed requirements, and specific application needs.
editor by CX 2023-12-03
