CN-117244361-B - Energy-saving high-efficiency medical molecular sieve oxygenerator

CN117244361BCN 117244361 BCN117244361 BCN 117244361BCN-117244361-B

Abstract

The invention discloses an energy-saving high-efficiency medical molecular sieve oxygenerator which is characterized by comprising N molecular sieve oxygenerator units, wherein N is more than or equal to 3, an air inlet communicating pipe is arranged between a first air inlet pipe of a first molecular sieve oxygenerator unit and a first air inlet pipe of an N molecular sieve oxygenerator unit, and an air outlet communicating pipe is arranged between a first air outlet pipe of the first molecular sieve oxygenerator unit and a first air outlet pipe of the N molecular sieve oxygenerator unit. The invention aims to overcome the defects in the prior art, and provides the energy-saving and high-efficiency medical molecular sieve oxygenerator which has a simple structure and can reduce the air consumption of compressed air by adjusting the air inflow according to the air supply amount, thereby realizing energy conservation.

Inventors

LI LINGAO
Lai Huanning
ZHANG QIAN
Yi Zhanfei

Assignees

广西珂深威医疗科技有限公司

Dates

Publication Date: 20260508
Application Date: 20231011

Claims (5)

1. The energy-saving control method of the energy-saving high-efficiency medical molecular sieve oxygenerator is characterized in that the energy-saving high-efficiency medical molecular sieve oxygenerator comprises N molecular sieve oxygenerator units (100), wherein N is more than or equal to 3, and the energy-saving control method comprises the following steps of: s1, collecting the pressure of an output end of a molecular sieve oxygen production unit (100) in real time; S2, calculating a pressure change trend through an internal algorithm to judge whether the current gas yield meets the gas supply requirement, if the gas yield is greater than the gas supply requirement and the gas pressure at the output end of the molecular sieve oxygenerator is greater than a set threshold value, executing the step S3, and if the gas yield is less than the gas supply requirement and the gas pressure at the output end of the molecular sieve oxygenerator is less than the set threshold value, executing the step S4; S3, controlling the molecular sieve oxygen generation unit (100) with the longest running time to stop working; s4, starting a molecular sieve oxygen generation unit with the shortest running time, and increasing the gas production amount of the oxygen generator to meet the gas supply requirement; the internal algorithm comprises the following steps: S1, when P is smaller than P r , starting all molecular sieve oxygen generation units (100); S2, stopping the molecular sieve oxygen production unit (100) with the longest operation time when P s >P≥P r and B > 1; S3, stopping all molecular sieve oxygen production units (100) when P is more than or equal to P s and B is more than 0; s4, when P s >P≥P r is less than-1 and less than-0, starting the molecular sieve oxygen generation unit (100) with the shortest running time; s5, when P s >P≥P r and B < -1, starting and operating all molecular sieve oxygen production units (100); wherein P is the real-time pressure of the output port of the molecular sieve oxygenerator; p r , a pressure threshold value of starting the molecular sieve oxygenerator; A pressure threshold at which the P s molecular sieve oxygenerator is stopped; ; B, molecular sieve oxygen production unit control coefficients; p △ is the pressure change difference value of the output port of the molecular sieve oxygenerator, and the unit is Pa; The output port of the molecular sieve oxygenerator is connected with the volume of the oxygen buffer tank, and the unit is m 3 .
2. The energy-saving control method of the energy-saving efficient medical molecular sieve oxygenerator according to claim 1, wherein the molecular sieve oxygenerator unit (100) comprises a first molecular sieve adsorption tank (6) and a second molecular sieve adsorption tank (7), the lower end of the first molecular sieve adsorption tank (6) is connected with a compressed air inlet pipeline (1) through a first air inlet pipe (12), the lower end of the second molecular sieve adsorption tank (7) is connected with the compressed air inlet pipeline (1) through a second air inlet pipe (13), a first electromagnetic valve (2) is arranged on the first air inlet pipe (12), a first exhaust pipe (14) is arranged on the first air inlet pipe (12) between the air inlet end of the first molecular sieve adsorption tank (6) and the first electromagnetic valve (2), a first exhaust valve (4) is arranged on the air outlet end of the first exhaust pipe (14), a second electromagnetic valve (3) is arranged on the second air inlet pipe (13), the second electromagnetic valve (3) is arranged between the air inlet end of the second molecular sieve adsorption tank (7) and the second electromagnetic valve (3), a second exhaust pipe (16) is arranged on the second air outlet pipe (16), a first exhaust valve (16) is arranged on the second air outlet pipe (16), the molecular sieve adsorption tank is characterized in that a second air outlet pipe (17) is arranged at the upper end of the second molecular sieve adsorption tank (7), a second one-way valve (10) is arranged on the second air outlet pipe (17), the second air outlet pipe (17) is respectively connected with an oxygen air outlet pipe (11), a communicating pipe (18) is arranged between a first air outlet pipe (16) at the air inlet end of the first one-way valve (9) and a second air outlet pipe (17) at the air inlet end of the second one-way valve (10), a third electromagnetic valve (8) is arranged on the communicating pipe (18), an air inlet communicating pipe (18) is arranged between a first air inlet pipe (12) of a first molecular sieve oxygen generation unit (100) and a first air inlet pipe (12) of an N molecular sieve oxygen generation unit (100), and an air outlet communicating pipe (18) is arranged between the first air outlet pipe (16) of the first molecular sieve oxygen generation unit (100).
3. The energy-saving control method of the energy-saving efficient medical molecular sieve oxygenerator according to claim 1, wherein a pressure detector (19) is arranged at the total air outlet end of an oxygen outlet pipe, the pressure detector (19) is connected with a controller (20), and the first electromagnetic valve (2), the second electromagnetic valve (3), the third electromagnetic valve (8), the first nitrogen discharge valve (4), the second nitrogen discharge valve (5), the first one-way valve (9) and the second one-way valve (10) are respectively connected with the controller (20).
4. The energy-saving control method of the energy-saving efficient medical molecular sieve oxygenerator according to claim 1, wherein the gas yield of each oxygen generating unit is 2-8Nm 3 /h.
5. The energy-saving control method of the energy-saving efficient medical molecular sieve oxygenerator, which is characterized in that the number of the oxygen generating units is 3.

Description

Energy-saving high-efficiency medical molecular sieve oxygenerator Technical Field The invention relates to the technical field of oxygenerators, in particular to an energy-saving high-efficiency medical molecular sieve oxygenerator. Background The medical molecular sieve oxygenerator adopts PSA (Pressure Swing Adsorption) pressure conversion adsorption technology, takes air as raw material, takes molecular sieve as adsorbent, and utilizes the characteristic that the adsorption capacity of nitrogen (adsorbate) in air is increased when the molecular sieve is pressurized and the adsorption capacity of nitrogen (adsorbate) in air is reduced when the molecular sieve is depressurized under the condition of normal temperature and low pressure to form a rapid circulation process of pressurized adsorption and depressurized desorption, so that oxygen in the air and the nitrogen are separated to produce oxygen. The gas yield of the existing oxygenerator is influenced by the pressure difference between the inside of the adsorption tower and the exhaust port, a large amount of gas is required to be consumed when the pressure of the adsorption tower is increased from 0 to a pressure larger than that of the exhaust port, the gas yield of the oxygenerator is reduced along with the reduction of the pressure difference between the adsorption tower and the exhaust port, but the air quantity of compressed air is reduced proportionally, when the gas yield of the oxygenerator is smaller than 10% of a nominal value, the air consumption of the oxygenerator is only reduced by not more than 7.8%, and excessive compressed air consumption is caused when the oxygenerator is not operated under full load, so that high energy consumption is caused. The medical unit configures the medical molecular sieve oxygenerator according to the highest peak gas consumption, so that the capacity of the oxygenerator is excessive when the gas consumption is low, and excessive compressed air consumption is caused, so that the energy consumption of the oxygenerator is excessive. Therefore, the existing molecular oxygen generator needs to be further improved. Disclosure of Invention The invention aims to overcome the defects in the prior art, and provides the energy-saving and high-efficiency medical molecular sieve oxygenerator which has a simple structure and can reduce the air consumption of compressed air by adjusting the air inflow according to the air supply amount, thereby realizing energy conservation. In order to achieve the above purpose, the present invention adopts the following scheme: the energy-saving high-efficiency medical molecular sieve oxygenerator is characterized by comprising N molecular sieve oxygenerator units, wherein N is more than or equal to 3, each molecular sieve oxygenerator unit comprises a first molecular sieve adsorption tank and a second molecular sieve adsorption tank, the lower end of each first molecular sieve adsorption tank is connected with a compressed air inlet pipeline through a first air inlet pipe, the lower end of each second molecular sieve adsorption tank is connected with a compressed air inlet pipeline through a second air inlet pipe, a first electromagnetic valve is arranged on each first air inlet pipe, a first exhaust pipe is arranged on a first air inlet pipe between the air inlet end of each first molecular sieve adsorption tank and the first electromagnetic valve, a first nitrogen discharge valve is arranged on the air outlet end of each first exhaust pipe, a second electromagnetic valve is arranged on each second air inlet pipe, a second exhaust pipe is arranged on a second air inlet pipe between the air inlet end of each second molecular sieve adsorption tank and the second electromagnetic valve, a first air outlet pipe is arranged on the upper end of each first molecular sieve adsorption tank, a first one-way valve is arranged on each first air outlet pipe, a first air outlet pipe is arranged on each second air outlet pipe, a first air inlet pipe is arranged between each second molecular sieve adsorption tank and the first air inlet pipe, a first air outlet pipe is connected with a first air inlet pipe is arranged on each first air inlet pipe, a first air outlet pipe is arranged on each first air outlet pipe is connected with a first air inlet pipe, a first air outlet pipe is arranged between each first molecular sieve adsorption tank is connected with a first air inlet pipe, a first air inlet pipe is arranged, a first air outlet pipe is arranged, a second air inlet pipe is connected with a second air inlet pipe is arranged, and each first air inlet pipe is respectively, and each air inlet pipe is connected with a second air inlet pipe is arranged, and each air inlet valve is respectively, and each air valve is, an air outlet communicating pipe is arranged between the first air outlet pipe of the first molecular sieve oxygen generating unit and the first air outlet pipe of the N molecular sieve