CN112344214A - Hospital is with oxygen safety intelligence air supply system - Google Patents
Hospital is with oxygen safety intelligence air supply system Download PDFInfo
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- CN112344214A CN112344214A CN202011331693.4A CN202011331693A CN112344214A CN 112344214 A CN112344214 A CN 112344214A CN 202011331693 A CN202011331693 A CN 202011331693A CN 112344214 A CN112344214 A CN 112344214A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/065—Arrangements for producing propulsion of gases or vapours
- F17D1/07—Arrangements for producing propulsion of gases or vapours by compression
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/58—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/02—Preparation of oxygen
- C01B13/0229—Purification or separation processes
- C01B13/0248—Physical processing only
- C01B13/0259—Physical processing only by adsorption on solids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0028—Separation of the specific gas from gas mixtures containing a minor amount of this specific gas
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0043—Impurity removed
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0043—Impurity removed
- C01B2210/0046—Nitrogen
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0043—Impurity removed
- C01B2210/0068—Organic compounds
Abstract
The invention discloses an oxygen safe and intelligent air supply system for hospitals, which comprises an air compressor, an air storage tank, a plurality of filtering systems, an air drying device, a pressure swing adsorption oxygen generator, a plurality of buffer air storage tanks, a sterilization filter and a purification device which are sequentially connected by using an air supply main pipeline, and a plurality of oxygen using terminals which are connected by a busbar, and also comprises a plurality of electromagnetic valves and a PLC (programmable logic controller), wherein the PLC and the electromagnetic valves are electrically connected; the plurality of buffering air storage tanks can preliminarily store the oxygen prepared by the oxygen generator and preliminarily reduce the pressure of the oxygen prepared by the oxygen generator so as to reduce the pressure reduction pressure of the busbar; in addition, the intelligent and safe control of the gas supply system can be realized through various electromagnetic valves, sensors and PLC controllers.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a safe and intelligent air supply system for oxygen used in hospitals.
Background
The oxygen supply system for hospitals is mainly used for oxygen supply in hospital wards, emergency rooms, observation rooms, operating rooms and other places, the oxygen supply system of the existing hospital generally concentrates an oxygen gas source at one place, high-pressure oxygen of the gas source is decompressed and then is transmitted to each gas supply terminal through a gas supply pipeline, a sealing socket which is rapidly inserted is arranged at each gas supply terminal, and gas supply equipment (a breathing machine and the like) is inserted to supply gas.
The existing oxygen supply equipment for hospitals generally adopts a pressure swing adsorption oxygen generator to generate oxygen, a filtering system is generally arranged before the oxygen generation to filter impurities in gas, and the filtered gas is subjected to oxygen supply after being decompressed by a decompression valve after being generated by an air compressor and the pressure swing adsorption oxygen generator. The working principle of the pressure swing adsorption oxygen generator is that compressed air passes through a molecular sieve, and the difference of the adsorption capacities of the molecular sieve on nitrogen and oxygen in the air is utilized, so that the molecular sieve has strong adsorption capacity on the nitrogen, the nitrogen in the air passing through the molecular sieve is adsorbed, and the oxygen cannot be adsorbed, and high-concentration oxygen can be obtained at the outlet of the molecular sieve. Because the molecular sieve has the characteristic that the adsorption capacity changes along with the pressure, the fluctuation of the oxygen flow at the outlet of the molecular sieve is large, and the oxygen flow at the oxygen terminal is unstable.
Disclosure of Invention
In order to solve the technical problem, the invention discloses an oxygen safe and intelligent air supply system for hospitals, which comprises an air compressor, an air storage tank, a plurality of filtering systems, a gas drying device, a pressure swing adsorption oxygen generator, a plurality of buffer air storage tanks, a sterilization filter and a purification device which are sequentially connected by using an air supply main pipeline, wherein the plurality of buffering air storage tanks, the sterilization filter and the purification device are connected with a plurality of oxygen terminals through busbars; the pressure swing adsorption oxygen generator comprises two adsorption separation tanks, wherein molecular sieve adsorption towers are arranged in the adsorption separation tanks; a gas supply pipeline between the gas drying device and the pressure swing adsorption oxygen generator is also provided with a two-position four-way electromagnetic valve, a gas outlet of the gas drying device is communicated with an O port of the two-position four-way electromagnetic valve, an A port and a B port of the two-position four-way electromagnetic valve are respectively connected with gas inlets of the two adsorption separation tanks, and a P port of the two-position four-way electromagnetic valve is connected with a nitrogen collecting device through a gas supply main pipeline; the air outlets of the two adsorption separation tanks are connected with a first two-position three-way electromagnetic valve which is a normally open type electromagnetic valve, the air inlet end of the first two-position three-way electromagnetic valve is communicated with the air outlet of one adsorption separation tank, and the air outlet end of the first two-position three-way valve is respectively connected with the air inlet of the other adsorption separation tank and an air supply main pipeline leading to the plurality of buffer air storage tanks; the purification device comprises two purifiers which are arranged in parallel, air inlet ends of the two purifiers are respectively provided with an air inlet valve, and air outlet ends of the two purifiers are respectively provided with an air outlet valve; still include the PLC controller, including storage module in the PLC controller, the controller with two-position cross valve reaches two-position three-way valve one is electric connection, just the PLC controller can control air compressor with the opening and close of pressure swing adsorption oxygenerator.
As an alternative of the invention, the dust remover further comprises a primary dust removing filter, wherein an air outlet of the primary dust removing filter is communicated with an air inlet of the air compressor through a main air supply pipeline; and a gas humidifier is also connected to the main gas supply pipeline between the sterilizing filter and the busbar.
As an alternative of the present invention, the filtering system includes a medium-efficiency filtering net and a high-efficiency filtering net, the medium-efficiency filtering net is disposed at an air inlet end of the filtering system, the high-efficiency filtering net is disposed at an air outlet end of the filtering system, and an air outlet of the filtering system is communicated with the main air supply pipeline through an air supply branch pipeline provided with a one-way valve.
As an alternative of the invention, two-position three-way electromagnetic valves two are arranged between the outlet of the gas storage tank and the corresponding multiple filtering systems, the gas inlet ends of the two-position three-way electromagnetic valves two are connected with the gas supply main pipeline connected with the gas outlet end of the gas storage tank, one gas outlet of the two-position three-way electromagnetic valves two is connected with the gas outlet end of the filtering system through a gas supply branch pipeline, and the other gas outlet of the two-position three-way electromagnetic valves two is connected with the gas supply main pipeline; and the two-position three-way electromagnetic valves are electrically connected with the PLC.
As an alternative of the invention, a gas detection module is arranged in the gas storage tank, the gas detection module comprises a carbon monoxide probe, a carbon dioxide probe, a temperature and humidity probe, a PM2.5 probe and a VOC probe, the gas detection module is electrically connected with the PLC controller, an air quality index value is preset in the storage module of the PLC controller, and the PLC controller selects the number of the two-position three-way electromagnetic valves two to be opened according to the value of the gas quality fed back by the gas detection module.
As an alternative of the invention, the gas supply main pipeline of the first two-position three-way electromagnetic valve, which is led to one end of the plurality of buffer gas storage tanks, is respectively connected with the plurality of buffer gas storage tanks through a third two-position three-way electromagnetic valve, the gas inlet end of the third two-position three-way electromagnetic valve is connected with the gas supply main pipeline close to one end of the buffer gas storage tanks, one gas outlet end of the third two-position three-way electromagnetic valve is connected with the buffer gas storage tanks, the other gas outlet end of the third two-position three-way electromagnetic valve is connected with the gas supply main pipeline far away from one end of the buffer gas storage tanks, and.
As an alternative of the present invention, a gas muffler is disposed on the main gas supply line between the air compressor and the gas storage tank, and a gas muffler is also disposed on the main gas supply line between the two-position four-way solenoid valve and the nitrogen gas collecting device.
As an alternative of the invention, the gas storage tank is communicated with the primary dust removal filter through a gas supply branch pipeline, and a first electromagnetic valve is arranged on the gas supply branch pipeline and is electrically connected with the PLC controller; the air inlet valve and the air outlet valve are electrically connected with the PLC.
As an alternative of the present invention, an oxygen analyzer for detecting oxygen purity in the main gas supply pipeline is arranged on the main gas supply pipeline at the gas outlet of the pressure swing adsorption oxygen generator, the gas supply system further comprises an audible and visual alarm, and when the oxygen purity in the main gas supply pipeline at the position detected by the oxygen analyzer is lower than a threshold value preset in the storage module in the PLC controller, the PLC controller starts the audible and visual alarm.
As an alternative of the present invention, a pressure sensor for detecting the oxygen pressure in the main air supply pipe is disposed at an air outlet of the buffer air storage tank near one side of the sterilizing filter, and the pressure sensor is electrically connected to the PLC controller.
The invention has the beneficial effects that:
according to the technical scheme, the oxygen generation and supply equipment sequentially connected with the main gas supply pipeline is used, so that the oxygen supply for hospitals can be met, the service life of the traditional pressure swing adsorption oxygen generator can be prolonged, and the oxygen generation quality can be improved; the appropriate amount of the filtering system can be intelligently selected through monitoring the air quality; in addition, a plurality of buffer gas storage tanks are arranged, so that the oxygen prepared by the oxygen generator can be preliminarily stored, and the oxygen prepared by the oxygen generator can be preliminarily decompressed, so that the decompression pressure of the busbar is reduced; the primary dust removal filter can filter floating dust in air so as to prolong the service life of the air compressor, and the primary dust removal filter can be cleaned in time without stopping the machine through back flushing of gas in the gas storage tank so as to ensure the filtering quality of the primary dust removal filter; the purification device can remove possible residual impurity gas and particles in the gas, further improves the purity of the gas, and meets different purity requirements of customers on the gas. In addition, the intelligent and safe control of the gas supply system can be realized through various electromagnetic valves, sensors and PLC controllers.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a control schematic diagram in the present invention.
Reference numerals:
100-a main gas supply pipeline; 101-a gas supply branch pipe; 110-an air compressor; 120-gas storage tank; 130-a filtration system; 131-a medium effect filter screen; 132-high efficiency filter screen; 140-gas drying means; 150-pressure swing adsorption oxygenerator; 151-adsorption separation tank; 160-buffer gas storage tank; 161-a pressure sensor one; 170-sterilizing filter; 180-a purification device; 181-a purifier; 182-an intake valve; 183-gas outlet valve; 190-a busbar; 200-a terminal; 301-two-position four-way solenoid valve; 302-two-position three-way electromagnetic valve I; 303-two-position three-way electromagnetic valve II; 304-two-position three-way solenoid valve III; 305-a first electromagnetic valve; 306-a one-way valve; 401-nitrogen gas collection means; 402-a primary dust removal filter; 403-a gas humidifier; 404-a gas detection module; 405-a gas muffler; 406-an oxygen analyzer; 407-audible and visual alarm; 408-pressure sensor two; 500-PLC controller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
It should be noted that all directional indicators (such as upper, lower, left, right, front, rear, horizontal, and vertical … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the description of the embodiments, the terms "disposed," "connected," and the like are to be construed broadly unless otherwise explicitly specified or limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; either directly or through an intervening medium, or through internal communication between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and 2, the present invention discloses an intelligent oxygen supply system for hospitals, which comprises an air compressor 110, an air storage tank 120, a plurality of filtering systems 130 arranged side by side, a gas drying device 140, a pressure swing adsorption oxygen generator 150, a plurality of buffer air storage tanks 160, a sterilization filter 170, a purification device 180, which are connected in sequence by using a main air supply pipeline 100, and are connected with a plurality of oxygen terminals 200 through a bus bar 190; wherein, the pressure swing adsorption oxygen generator 150 comprises two adsorption separation tanks 151, and molecular sieve adsorption towers are arranged in the adsorption separation tanks 151; a two-position four-way electromagnetic valve 301 is further arranged on a gas supply pipeline between the gas drying device 140 and the pressure swing adsorption oxygen generator 150, a gas outlet of the gas drying device 140 is communicated with an O port of the two-position four-way electromagnetic valve 301, an A port and a B port of the two-position four-way electromagnetic valve 301 are respectively connected with gas inlets of the two adsorption separation tanks 151, and a P port of the two-position four-way electromagnetic valve 301 is connected with a nitrogen collecting device 401 through a gas supply main pipeline 100; the air outlets of the two adsorption separation tanks 151 are connected with the same two-position three-way electromagnetic valve I302, the two-position three-way electromagnetic valve I302 is a normally open type electromagnetic valve, the air inlet end of the two-position three-way electromagnetic valve I302 is communicated with the air outlet of one adsorption separation tank 151, and the air outlet end of the two-position three-way valve I302 is respectively connected with the air inlet of the other adsorption separation tank and the main air supply pipeline 100 leading to the plurality of buffer air storage tanks; still include PLC controller 500, including storage module in PLC controller 500, controller 500 is electric connection with two-position cross valve 301 and two-position three-way valve 302, and PLC controller 500 can control opening and close of air compressor 110 and pressure swing adsorption oxygenerator 150.
The purification device 180 comprises two purifiers 181 which are arranged in parallel, wherein the air inlet ends of the two purifiers 181 are respectively provided with an air inlet valve 182, and the air outlet ends are respectively provided with an air outlet valve 183; the air inlet valve 182 and the air outlet valve 183 are electrically connected to the PLC controller 500. The purifying device 180 can remove impurity gas and particles possibly remaining in the gas, further improve the purity of the gas and meet different purity requirements of customers on the gas. In practice, the skilled person can use different regeneration processes, such as alternative regeneration or multiple regeneration, for two purifiers side by side, depending on the specific requirements of the gas.
In this scheme, air is compressed by the air compressor 110 and then enters the air storage tank 120, the air storage tank 120 stores and primarily buffers the compressed air and then enters the filtering system 130 through the main air supply pipeline 100 for filtering, the filtered air is dried by the drying device 140 and then is processed by the pressure swing adsorption oxygen generator 150 for oxygen generation, the pressure swing adsorption oxygen generator 150 comprises two molecular sieve adsorption towers, the two molecular sieve adsorption towers are controlled to alternately and circularly work by controlling the two-dimensional four-way solenoid valve 301 and the two-position three-way valve 302, the rapid cyclic process of pressurized adsorption and pressure reduction desorption is formed by utilizing the characteristic that the adsorption capacity of the molecular sieve on the adsorbate (mainly nitrogen) is increased when the molecular sieve is pressurized and is reduced when the molecular sieve is depressurized, oxygen and nitrogen separation is completed, oxygen required by a medical unit is obtained, and the discharged nitrogen is recycled to enter the nitrogen collecting device 401 for other use. In the actual use process, the PLC controller 500 can be used to automatically control the air compressor 110, the two-position four-way valve 301 and the two-position three-way valve 302.
The molecular sieve adsorption tower is a core component of the pressure swing adsorption oxygen generator 150, is generally quite expensive, and can be maintained according to the specifications of an instruction manual, and the service time can reach ten years under the condition that the water content of the inlet compressed air meets the process requirements. However, through years of equipment management experience, the applicant finds that most molecular sieve absorption towers are replaced in advance because the water content of compressed air is not strict, so that the molecular sieve absorption towers do not reach the rated service life, not only is capital waste caused, but also the waste materials of the molecular sieve absorption towers have certain influence on environmental protection. Therefore, the addition of the gas drying device 140 is crucial to the service life of the molecular sieve adsorption tower.
In the above solution, the air compressor 110 directly compresses the air, so as to avoid impurities in the air from entering the air compressor 110 to prolong the service life of the air compressor 110, in this solution, the air supply system further includes a primary dust removal filter 402, and the air outlet of the primary dust removal filter 190 is communicated with the air inlet of the air compressor through the main air supply pipe. Since the air before entering the pressure swing adsorption oxygen generator 150 is dried in the air drying device 140, and then if the humidity of the oxygen finally reaching the terminal is low, the air is sucked into the respiratory tract, which easily causes the respiratory tract to be dry, and nasal secretion may block the mouth of the tube, the air humidifier 403 is further connected to the main air supply pipe between the sterilizing filter 170 and the bus bar 190 in the present embodiment.
As a preferable scheme of the above scheme, two-position three-way electromagnetic valves two 303 are respectively arranged between the outlet of the air storage tank 120 and the corresponding multiple filtering systems 130, the air inlet ends of the two-position three-way electromagnetic valves two 303 are connected with the main air supply pipeline 100 connected with the air outlet end of the air storage tank 120, one of the air outlets of the two-position three-way electromagnetic valves two 303 is connected with the air outlet end of the filtering system 130 through the branch air supply pipeline 101, and the other air outlet of the two-position three-way electromagnetic valves two 303 is connected with the main air supply pipeline 100; the two-position three-way electromagnetic valves 303 are electrically connected with the PLC controller 500. In the actual use process, the number of the two-position three-way electromagnetic valves 303 can be controlled according to the air quality at the place to realize intelligent filtration.
In above-mentioned technical scheme, can realize detecting the quantity that two position three way solenoid valves 303 that the air quality selection of location needs opened, be provided with gaseous detection module 404 in this scheme in gas holder 160, gaseous detection module 404 includes the carbon monoxide probe, the carbon dioxide probe, the humiture probe, PM2.5 probe and VOC probe, gaseous detection module 404 and PLC controller 500 electric connection, be provided with air quality index numerical value in PLC controller 500's the storage module in advance, PLC controller 500 selects the quantity that two position three way solenoid valves two that need open according to the numerical value of gaseous quality of gaseous detection module 404 feedback.
As an alternative of the present invention, the main air supply pipe 100, which is led to one end of the plurality of buffer air tanks 160 by the two-position three-way solenoid valve one 302, is respectively connected to the plurality of buffer air tanks 160 by the two-position three-way solenoid valve three 304, the air inlet end of the two-position three-way solenoid valve three 304 is connected to the main air supply pipe 100 near one end of the buffer air tanks 160, one air outlet end of the two-position three-way solenoid valve three 304 is connected to the buffer air tanks 160, the other air outlet end of the two-position three-way solenoid valve three 304 is connected to the main air supply pipe 100 far from one end of the buffer air tanks 160. The plurality of buffer gas outlet tanks 160 can store and buffer oxygen produced by the pressure swing adsorption oxygen generator 150 in actual operation, so as to ensure the stability of oxygen flow supplied to a terminal, and in the actual use process, the air inlet/outlet/closing of each buffer gas storage tank 160 can be independently controlled by the arranged two-position three-way valve 304. All be provided with pressure sensor 161 in a plurality of buffering gas holders in addition, a plurality of pressure sensor all with PLC controller electric connection, PLC controller 500 is according to the pressure numerical value of a 161 feedback of pressure sensor and then controls three 304 of two-position three way solenoid valve to realize further intelligent control.
In order to avoid noise generated by the gas pressure change in the main gas supply pipe 100, a gas muffler 405 is provided in the main gas supply pipe 100 between the air compressor 110 and the gas tank 160, and a gas muffler 405 is also provided in the main gas supply pipe between the two-position four-way solenoid valve 301 and the nitrogen gas collecting device 401.
In the actual use process, the primary dust removing filter 402 needs to be cleaned or replaced regularly, if the air at the place has more floating dust, the cleaning or replacing frequency of the primary dust removing filter 402 is very high, in the scheme, the air storage tank 120 is communicated with the primary dust removing filter 401 through the air supply branch pipe 101, the air supply branch pipe 101 is provided with the first electromagnetic valve 305, and the first electromagnetic valve 305 is electrically connected with the PLC 500. When the dust of the primary dust removal filter 402 needs to be cleaned, the PLC controller 500 may start the first electromagnetic valve 305 to blow back the gas in the gas storage tank 120 to blow down the floating dust adsorbed in the primary dust removal filter 402, and in the actual use process, a dust collecting port may be formed at the bottom of the primary dust removal filter to collect the dust blown back.
In the in-process of in-service use, the requirement to the content purity of the oxygen that supplies in the air supply trunk line to the end user is higher, in this application file, for the system oxygen purity of real-time supervision pressure swing adsorption oxygenerator 150, be provided with the oxygen analysis appearance 406 that is arranged in detecting the oxygen purity in the position department air supply trunk line on the air supply trunk line 100 of pressure swing adsorption oxygenerator 150 gas outlet department, oxygen analysis appearance 406 and PLC controller 500 electric connection, still include audible-visual annunciator 407 in this air supply system, when oxygen purity is less than the threshold value of establishing in advance in the storage module in the PLC controller in the position department air supply trunk line that the oxygen analysis appearance detected, PLC controller 500 starts audible-visual annunciator, remind the staff to carry out manual intervention.
In addition, a second pressure sensor 408 for detecting the oxygen pressure in the main air supply pipeline at the position is arranged at the air outlet of the buffer air storage tank 160 close to one side of the sterilizing filter 170, and the second pressure sensor is electrically connected with the PLC 500.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization of those skilled in the art; where combinations of features are mutually inconsistent or impractical, such combinations should not be considered as being absent and not within the scope of the claimed invention.
Claims (10)
1. An oxygen safety intelligent gas supply system for hospitals is characterized by comprising an air compressor, a gas storage tank, a plurality of filtering systems, a gas drying device, a pressure swing adsorption oxygen generator, a plurality of buffering gas storage tanks, a sterilization filter and a purification device which are sequentially connected by using a gas supply main pipeline, and a plurality of oxygen terminals are connected through a busbar; wherein the content of the first and second substances,
the pressure swing adsorption oxygen generator comprises two adsorption separation tanks, and molecular sieve adsorption towers are arranged in the adsorption separation tanks;
a gas supply pipeline between the gas drying device and the pressure swing adsorption oxygen generator is also provided with a two-position four-way electromagnetic valve, a gas outlet of the gas drying device is communicated with an O port of the two-position four-way electromagnetic valve, an A port and a B port of the two-position four-way electromagnetic valve are respectively connected with gas inlets of the two adsorption separation tanks, and a P port of the two-position four-way electromagnetic valve is connected with a nitrogen collecting device through a gas supply main pipeline;
the air outlets of the two adsorption separation tanks are connected with a first two-position three-way electromagnetic valve which is a normally open type electromagnetic valve, the air inlet end of the first two-position three-way electromagnetic valve is communicated with the air outlet of one adsorption separation tank, and the air outlet end of the first two-position three-way valve is respectively connected with the air inlet of the other adsorption separation tank and an air supply main pipeline leading to the plurality of buffer air storage tanks;
the purification device comprises two purifiers which are arranged in parallel, air inlet ends of the two purifiers are respectively provided with an air inlet valve, and air outlet ends of the two purifiers are respectively provided with an air outlet valve;
still include the PLC controller, including storage module in the PLC controller, the PLC controller with two-position cross valve reaches two-position three-way valve one is electric connection, just the PLC controller can control air compressor with the opening and close of pressure swing adsorption oxygenerator.
2. The hospital oxygen safety intelligent air supply system according to claim 1, further comprising a primary dust removal filter, wherein an air outlet of the primary dust removal filter is communicated with an air inlet of the air compressor through an air supply main pipe; and a gas humidifier is also connected to the main gas supply pipeline between the sterilizing filter and the busbar.
3. The hospital oxygen safety intelligent gas supply system according to claim 1, wherein the filtering system comprises a medium-efficiency filter screen and a high-efficiency filter screen, the medium-efficiency filter screen is arranged at the gas inlet end of the filtering system, the high-efficiency filter screen is arranged at the gas outlet end of the filtering system, and the gas outlet of the filtering system is in through connection with the gas supply main pipeline through a gas supply branch pipeline provided with a one-way valve.
4. The hospital oxygen safety intelligent gas supply system according to claim 1, wherein a two-position three-way solenoid valve II is arranged between the outlet of the gas storage tank and the corresponding plurality of filtering systems, the gas inlet end of the two-position three-way solenoid valve II is connected with the gas supply main pipeline connected with the gas outlet end of the gas storage tank, one gas outlet of the two-position three-way solenoid valve II is connected with the gas outlet end of the filtering system through a gas supply branch pipeline, and the other gas outlet of the two-position three-way solenoid valve II is connected with the gas supply main pipeline; and the two-position three-way electromagnetic valves are electrically connected with the PLC.
5. The hospital oxygen safety intelligent gas supply system according to claim 4, wherein a gas detection module is arranged in the gas storage tank, the gas detection module comprises a carbon monoxide probe, a carbon dioxide probe, a temperature and humidity probe, a PM2.5 probe and a VOC probe, the gas detection module is electrically connected with the PLC, an air quality index value is preset in the storage module of the PLC, and the PLC selects the number of the two-position three-way electromagnetic valves to be opened according to the value of the gas quality fed back by the gas detection module.
6. The hospital oxygen safety intelligent gas supply system according to claim 1, wherein a first gas supply main pipeline leading to one end of the buffer gas storage tank is connected with the buffer gas storage tank through a third two-position three-way solenoid valve, a third gas inlet end of the third two-position three-way solenoid valve is connected with a gas supply main pipeline close to one end of the buffer gas storage tank, a third gas outlet end of the third two-position three-way solenoid valve is connected with the buffer gas storage tank, another third gas outlet end of the third two-position three-way solenoid valve is connected with a gas supply main pipeline far away from one end of the buffer gas storage tank, and the third two-position three-way solenoid valves are electrically connected with the PLC.
7. The hospital oxygen safety intelligent supply system according to claim 1, wherein a gas muffler is provided on the main supply line between the air compressor and the air storage tank, and a gas muffler is also provided on the main supply line between the two-position four-way solenoid valve and the nitrogen gas collection device.
8. The hospital oxygen safety intelligent supply system according to claim 2, wherein the gas storage tank is communicated with the primary dust removal filter through a gas supply branch pipe, and a first electromagnetic valve is arranged on the gas supply branch pipe and is electrically connected with the PLC; the air inlet valve and the air outlet valve are electrically connected with the PLC.
9. The hospital oxygen safety intelligent gas supply system according to claim 1, wherein an oxygen analyzer for detecting oxygen purity in the gas supply main pipeline is arranged on the gas supply main pipeline at the gas outlet of the pressure swing adsorption oxygen generator, the gas supply system further comprises an audible and visual alarm, and when the oxygen purity in the gas supply main pipeline at the position detected by the oxygen analyzer is lower than a threshold value preset in the storage module in the PLC controller, the audible and visual alarm is started by the PLC controller.
10. The hospital oxygen safety intelligent supply system according to claim 9, wherein a pressure sensor for detecting the oxygen pressure in the main supply line is provided at an air outlet of the buffer air storage tank near the sterilizing filter, and the pressure sensor is electrically connected to the PLC controller.
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| CN202011331693.4A CN112344214A (en) | 2020-11-24 | 2020-11-24 | Hospital is with oxygen safety intelligence air supply system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513822A (en) * | 2021-04-20 | 2021-10-19 | 吴淑花 | Central air conditioning air-out state monitoring system in building |
| CN113878128A (en) * | 2021-10-13 | 2022-01-04 | 南京铖联激光科技有限公司 | 3D printing tail gas recycling system and method |
| CN114363812A (en) * | 2022-01-20 | 2022-04-15 | 广东隧辰地下空间科技有限公司 | Intelligent rescue and emergency transportation system for tunnel operation |
| CN114673933A (en) * | 2022-04-06 | 2022-06-28 | 浙江普崎数码科技有限公司 | High-precision stepped negative pressure control system and control method thereof |
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- 2020-11-24 CN CN202011331693.4A patent/CN112344214A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513822A (en) * | 2021-04-20 | 2021-10-19 | 吴淑花 | Central air conditioning air-out state monitoring system in building |
| CN113513822B (en) * | 2021-04-20 | 2023-10-31 | 招商楼宇科技(深圳)有限公司 | Air-out state monitoring system of central air conditioner in building |
| CN113878128A (en) * | 2021-10-13 | 2022-01-04 | 南京铖联激光科技有限公司 | 3D printing tail gas recycling system and method |
| CN114363812A (en) * | 2022-01-20 | 2022-04-15 | 广东隧辰地下空间科技有限公司 | Intelligent rescue and emergency transportation system for tunnel operation |
| CN114673933A (en) * | 2022-04-06 | 2022-06-28 | 浙江普崎数码科技有限公司 | High-precision stepped negative pressure control system and control method thereof |
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