Company introduction
LDH series liquid nitrogen equipment is based on the pressure swing adsorption principle, using high-quality carbon molecular sieve as adsorbent, under a certain pressure, from the air to produce nitrogen. After purifying and drying compressed air, pressure adsorption and decompression desorption are carried out in the absorber. Due to the kinetic effect, the diffusion rate of oxygen in the micropores of carbon molecular sieve is much higher than that of nitrogen. When the adsorption is not in equilibrium, nitrogen is enriched in the gas phase to form the finished nitrogen. Then decompression to atmospheric pressure, adsorbent adsorption of oxygen and other impurities, to achieve regeneration. Generally, two adsorption towers are set up in the system. One tower absorbs nitrogen and the other tower is desorption and regeneration. Automatic control by PLC program makes the two towers work alternately. The finished nitrogen is then passed through the refrigerator to produce liquid nitrogen.
Technical features:
1. Adopt diversified environmental protection refrigerating medium with independent intellectual property rights2. The cold box adopts special secondary foaming technology to achieve good thermal insulation effect3. The refrigeration system adopts internationally famous compressor, which is safe and durable, and the spare parts are conventional4. Compared with the traditional Stirling liquid nitrogen unit, it has the following advantages: low cost, no regular maintenance, high reliability and long service cycle.
LDH liquid nitrogen machine technical characteristics
1. Adopt diversified environmental protection refrigerating medium with independent intellectual property rights
2. The cold box adopts special secondary foaming technology to achieve good thermal insulation effect
3. The refrigeration system adopts internationally famous compressor, which is safe and durable, and the spare parts are conventional
4. Compared with the traditional Stirling liquid nitrogen unit, it has the following advantages: low cost, no regular maintenance, high reliability and long service cycle
The liquefaction efficiency is high
Invest in commercial compressors, heat exchangers and other equipment that are mature on the market
Lends itself to easy installation, high reliability, no maintenance, and long operating cycle
Simple operation
| Mode |
LPLN-10 |
LPLN-20 |
LPLN-40 |
LPLN-80 |
LPLN-120 |
LPLN-240 |
LPLN-480 |
LPLN-720 |
LPLN-960 |
LPLN-1200 |
| Capacity |
0.3-0.4L/H
8-10L/day |
0.8-1L/H
20-24L/day |
1.6-2L/H
40-50L/day |
3L/H
72L/day |
5L/H
120L/day |
10L/H
240L/day |
20L/H
480L/day |
30L/H
720L/day |
40L/H
960L/day |
50L/H
1200L/day |
| Purity |
≥99% |
≥99% |
| Votage |
220VAC
1P
50Hz |
380VAC 3P 50Hz
220VAC 1P 50Hz |
380VAC 3P 50Hz
220VAC 1P 50Hz |
| Power(KW) |
2 |
4.5 |
7.5 |
12.5 |
15 |
27 |
45 |
55 |
84 |
92 |
| Area |
1 |
1.5 |
3 |
3.5 |
3.5 |
10 |
30 |
30 |
40 |
40 |
| Size |
750*650*1500 |
1150*850*2000 |
1250*2000*2000 |
1250*2000*2000 |
1250*2000*2000 |
6000*1100*2200 |
8000*1700*2300 |
8000*1700*2300 |
12000*1800*2350 |
12000*1800*2350 |
| Weight(kg) |
|
425kg |
710kg |
|
|
|
|
|
|
|
| Ambient temperature |
0-30ºC |
0-30ºC |
| Noise(dB) |
<50Db |
<50Db |
<50Db |
<50Db |
<55Db |
<72Db |
<78Db |
<78Db |
<78Db |
<78Db |
After-sales service
Provide technical consultation and operation training to customers; B: Preset some spare parts in a planned way to meet the needs of customers, and take emergency measures to meet the urgent need for spare parts of customers; C: Provide debugging services; D: provide visit service (at least once a year) E: collect customer demand information, accept customer quality objections, and timely take corrective and preventive measures;
Introduction to after-sales engineers;
Company service engineers through professional skills training, strict professional skills assessment, with first-class technology, service level comprehensive service for users.
Schedule of emergency maintenance;
A: Give a clear reply to the user within 2 hours after receiving the information about the failure of the user's equipment;
B: Within 48 hours after confirming the presence of the site, we shall arrive at the site of the user quickly to ensure the normal use of the user.
Prices and supply channels of main spare parts
Commonly used accessories are in stock all year round and the price is lower than the market average.
Special services
A: Establish electronic user files to assist users in equipment management;
B: Regularly remind users to replace wearing parts, check equipment and matters needing attention;
C: Regular product use tracking service and after-sales service consultation;
D: Set up after-sale service column records.
Training plan;
Train operators to operate the equipment skillfully;
Let maintenance personnel master the daily maintenance and repair work of equipment; When the service personnel visit the user: understand the user's use situation, conduct secondary training for the operator, so that the operation and maintenance personnel further understand the equipment.
LDH manufacturers supply laboratories with integrated small liquid nitrogen generators
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