CN113952143A - Control mechanism and pressure control method of movable plateau slow-release cabin - Google Patents

Control mechanism and pressure control method of movable plateau slow-release cabin Download PDF

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Publication number
CN113952143A
CN113952143A CN202111311040.4A CN202111311040A CN113952143A CN 113952143 A CN113952143 A CN 113952143A CN 202111311040 A CN202111311040 A CN 202111311040A CN 113952143 A CN113952143 A CN 113952143A
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Prior art keywords
cabin
pressure
air
plateau
slow
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CN202111311040.4A
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闫嘉莹
马建华
罗锋
尹生春
王飞
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Csic Xi'an Dong Yi Science Technology & Industry Group Co ltd
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Csic Xi'an Dong Yi Science Technology & Industry Group Co ltd
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Priority to CN202111311040.4A priority Critical patent/CN113952143A/en
Publication of CN113952143A publication Critical patent/CN113952143A/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G10/00—Treatment rooms or enclosures for medical purposes
    • A61G10/02—Treatment rooms or enclosures for medical purposes with artificial climate; with means to maintain a desired pressure, e.g. for germ-free rooms
    • A61G10/023—Rooms for the treatment of patients at over- or under-pressure or at a variable pressure
    • A61G10/026—Rooms for the treatment of patients at over- or under-pressure or at a variable pressure for hyperbaric oxygen therapy
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/343—Structures characterised by movable, separable, or collapsible parts, e.g. for transport
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H1/00—Buildings or groups of buildings for dwelling or office purposes; General layout, e.g. modular co-ordination or staggered storeys
    • E04H1/12—Small buildings or other erections for limited occupation, erected in the open air or arranged in buildings, e.g. kiosks, waiting shelters for bus stops or for filling stations, roofs for railway platforms, watchmen's huts or dressing cubicles
    • E04H1/1205—Small buildings erected in the open air
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • F24F2011/0002—Control or safety arrangements for ventilation for admittance of outside air

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Architecture (AREA)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Civil Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Structural Engineering (AREA)
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  • Fuzzy Systems (AREA)
  • Electromagnetism (AREA)
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  • Life Sciences & Earth Sciences (AREA)
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Abstract

The invention provides a control mechanism and a pressure control method of a movable plateau slow-release cabin, wherein the control mechanism comprises a cabin body, a PLC control system, an environment detection system, a pressure increasing and decreasing system, a temperature and humidity adjusting system and a UPS (uninterrupted power supply), wherein the environment detection system, the pressure increasing and decreasing system, the temperature and humidity adjusting system and the UPS are respectively and electrically connected with the PLC control system; the environment detection system, the pressure increasing and reducing system, the temperature and humidity adjusting system, the UPS and the PLC control system are arranged on the slow release cabin and/or the equipment cabin, and the PLC control system controls the pressure increasing and reducing system according to the air pressure value inside and outside the slow release cabin provided by the environment detection system and the air pressure difference value obtained by subtracting the air pressure value from the air pressure value, so as to realize the automatic process control of sectional pressure establishment and stable pressure dynamic ventilation. The invention can quickly relieve and temporarily eliminate the altitude reaction of field constructors in the plateau and can be used by a plurality of people in areas with different altitudes.

Description

Control mechanism and pressure control method of movable plateau slow-release cabin
Technical Field
The invention belongs to the technical field of pressurization and oxygen supply, and particularly relates to a control mechanism and a pressure control method of a movable plateau slow-release cabin.
Background
Along with the development of the society, the scale of highway construction in plateau areas is gradually enlarged, and the number of people participating in the construction is increased, most of the people fight at the first line of high-altitude construction sites, the plateau environment is characterized by low pressure, low oxygen and dry and cold climate, and constructors in the low-pressure environment are seriously disturbed by the plateau reaction, thereby bringing great influence on the engineering construction. The plateau pressurization treatment scheme can quickly relieve and temporarily eliminate the symptoms of the plateau reaction, and is an ideal solution for the plateau engineering construction unit to deal with the plateau reaction of constructors in the construction process.
The highway construction units generally can make a transition along with the change of tasks, and the number of people needing to be recovered is large, so that at present, no control equipment which can meet the requirements of mobility, multi-user use, automatic control and the like and solve the problem of altitude anoxia exists.
Disclosure of Invention
In order to relieve the high altitude uncomfortable symptoms of dizziness, tachypnea, heartbeat acceleration and the like of a human body in a high altitude low pressure environment and meet the requirements of mobility, multi-person use, automatic control and the like, the invention aims to provide a control mechanism of a mobile plateau slow-release cabin and a pressure control method of the mobile plateau slow-release cabin.
The technical scheme adopted by the invention is as follows:
a control mechanism of a movable plateau slow-release cabin at least comprises a cabin body, an environment detection system, a pressure increasing and decreasing system, a temperature and humidity adjusting system, a UPS (uninterrupted power supply), a PLC (programmable logic controller) control system and a trailer,
the interior of the cabin body is divided into an open equipment cabin and a sealed slow release cabin by a partition plate, one end of the slow release cabin is provided with an opening, a main cabin door is arranged on the opening in a sealing way, and the main cabin door can be opened and closed; the slow release cabin and the equipment cabin are integrally arranged on the trailer;
the environment detection system, the pressure increasing and decreasing system, the temperature and humidity adjusting system, the UPS and the PLC control system are arranged on the slow release cabin or the equipment cabin, and the environment detection system, the pressure increasing and decreasing system, the temperature and humidity adjusting system and the UPS are respectively and electrically connected with the PLC control system; the PLC control system controls the pressure increasing and reducing system according to the air pressure difference value obtained by subtracting the air pressure values inside and outside the slow release cabin provided by the environment detection system and a corresponding pressure control method to realize the automatic process control of sectional pressure establishment and stable pressure dynamic ventilation.
Furthermore, the pressure increasing and reducing system comprises a gas storage tank and a Roots blower, the gas storage tank and the Roots blower are respectively installed on the bottom plate of the equipment cabin, a Roots blower air inlet pipe and a Roots blower air outlet pipe are connected to the Roots blower, one end of the Roots blower air inlet pipe extends out of the equipment cabin, the Roots blower air outlet pipe is connected with the gas storage tank, a gas supply main pipeline is connected to the gas storage tank, an outlet of the gas supply main pipeline is divided into two paths, one path is a left gas inlet pipe, the other path is a right gas inlet pipe, and the left gas inlet pipe and the right gas inlet pipe respectively penetrate through the partition plate and extend into the slow release cabin.
Furthermore, the Roots blower is connected with a plateau variable frequency motor through belt transmission, a plateau variable frequency motor ventilator is connected to the plateau variable frequency motor, and the plateau variable frequency motor ventilator cannot adjust the speed and perform air cooling on the plateau variable frequency motor at a rated rotating speed; furthermore, the plateau variable frequency motor and the plateau variable frequency motor ventilator are in communication connection with the PLC control system, and the plateau variable frequency motor is subjected to frequency conversion and speed regulation by the PLC control system so as to realize the adjustment of the air supply flow of the Roots blower.
Further, an air storage tank bypass is connected to the air storage tank, one end of the air storage tank bypass extends out of the equipment cabin, and a bypass valve is mounted on the air storage tank bypass; the gas supply main pipeline is provided with a flowmeter and a pressurizing electromagnetic valve, and the pressurizing electromagnetic valve is in communication connection with the PLC control system and used for controlling the on-off of the gas supply main pipeline; the slow release cabin is provided with a pressure release pipeline, a pressure relief electromagnetic valve is installed on the pressure release pipeline, and the pressure relief electromagnetic valve is in communication connection with the PLC control system and used for controlling the on-off of the pressure release pipeline.
Further, the temperature and humidity control system comprises an air conditioner outdoor unit, an air conditioner indoor unit and an air conditioner supercharging drainage pipeline, the air conditioner outdoor unit is installed on a bottom plate of the equipment cabin, the air conditioner indoor unit is located in the slow release cabin and installed on the partition plate, one end of the air conditioner supercharging drainage pipeline is connected with a water outlet of the air conditioner indoor unit, and the other end of the air conditioner supercharging drainage pipeline penetrates through the partition plate and extends out of the equipment cabin. It is worth mentioning that the air conditioner supercharging drainage pipeline is provided with a section of vertical pipeline in the equipment cabin, when the air conditioner is used, water needs to be stored in the air conditioner supercharging drainage pipeline, and the water storage height in the vertical pipeline is equal to the pressure working value in the cabin. The air conditioner pressurization drainage pipeline solves the drainage problem of the air conditioner working in the sealed pressurization cabin, can ensure that the air conditioner normally drains water out of the cabin when the working pressure value is reached, and can also ensure that the cabin is sealed.
Further, the environment detection system comprises an oxygen sensor, a carbon dioxide sensor, a temperature and humidity sensor, an in-cabin pressure sensor and an out-cabin pressure sensor, the out-cabin pressure sensor is installed on an interior trim panel of the equipment cabin, the in-cabin pressure sensor, the oxygen sensor, the carbon dioxide sensor and the temperature and humidity sensor are installed on an interior trim panel of the slow release cabin, and the oxygen sensor, the carbon dioxide sensor, the temperature and humidity sensor, the in-cabin pressure sensor and the out-cabin pressure sensor are respectively in signal connection with the PLC control system. The sensor signal is input into the expansion module through the PLC analog quantity to provide the PLC control system with the environmental parameters of pressure outside the cabin, pressure inside the cabin, oxygen content, carbon dioxide content, temperature, humidity and the like.
Furthermore, the PLC control system comprises an electrical control box, a frequency converter box, an extra-cabin touch screen box and an in-cabin touch screen box, wherein the electrical control box and the frequency converter box are positioned in the equipment cabin and are respectively arranged on the partition plate, and the UPS is arranged on the bottom plate of the equipment cabin and is positioned at the lower part of the electrical control box; the touch screen box in the cabin is positioned in the slow release cabin and is arranged on the partition board; the touch screen box outside the cabin is arranged outside the slow release cabin and is positioned on the right side of the main cabin door.
Furthermore, the electrical control box is internally provided with a PLC, an exchanger, a relay, a voltmeter, a universal change-over switch, a key switch, an automatic/manual selection switch and the like, and the frequency converter box is only provided with one frequency converter which is independently arranged to prevent interference with the work of the PLC system. Specifically, the frequency converter adopts an analog quantity working mode, and frequency acquisition and control are carried out through a PLC analog quantity input or output expansion module; the touch screen box in the cabin is provided with a touch screen in the cabin, a starting button with a lamp in the cabin, a stopping button with a lamp in the cabin, an emergency stopping button in the cabin, a silencing button with a lamp in the cabin and a buzzer in the cabin; the touch screen box outside the cabin is provided with a touch screen outside the cabin, a starting button with a lamp outside the cabin, a stopping button with a lamp outside the cabin, an emergency stop button outside the cabin, a silencing button with a lamp outside the cabin, a buzzer outside the cabin and a window interphone auxiliary machine, the touch screen box outside the cabin or the touch screen box inside the cabin is used for operating related buttons, and the system works according to a preset program. The touch screen box outside the cabin or the touch screen box inside the cabin can simultaneously display the real-time value of the sensor, the setting and running frequency of the variable frequency motor, the running condition of the equipment and manual operation during debugging. The two touch screens are connected with the PLC through a network cable for data exchange through the switch, and the addresses of the two touch screens and the PLC are set to be different IP addresses of the same network segment.
Specifically, an in-cabin pressure sensor and an out-cabin pressure sensor transmit an in-cabin and out-cabin air pressure difference value detected in real time to a PLC, the PLC compares the in-cabin and out-cabin air pressure difference value with a set value, and a plateau variable frequency motor is regulated through a frequency converter according to a comparison result so as to regulate the air supply flow of a Roots blower; furthermore, the air supply flow is designed with a pressurizing flow and a ventilation flow, the pressurizing flow is small, the three fixed frequency switching is realized along with the pressure change in the cabin according to the pressurizing rate, and the three fixed frequency switching is applied to pressure establishment; the ventilation flow is large, the ventilation flow is designed according to the rated number of users and is related to the pressure relief rate, the matched fan running frequency is adjusted and arranged on the touch screen outside the cabin, and the ventilation device is applied to stable-pressure dynamic ventilation. The flow value of the supplied air is detected by a flowmeter, a flow signal is input into an expansion module through analog quantity and sent into a PLC control system, a pressurization solenoid valve controls the on-off of a main air supply pipeline, a pressure reduction solenoid valve controls the on-off of a pressure release pipeline, and the PLC control system controls the on-off of the pressure release pipeline in an attracting or breaking way.
Furthermore, the control mechanism further comprises an auxiliary system, wherein the auxiliary system comprises a window interphone main machine, a window interphone auxiliary machine and a household active oxygen detoxification machine, the window interphone auxiliary machine is installed in the touch screen box outside the cabin, and the window interphone main machine and the household active oxygen detoxification machine are installed on an interior trim panel on one side, close to the main cabin door, in the slow release cabin. When needed, the window interphone is started, and the person on duty outside the cabin and the person in the cabin can communicate with each other to know the situation in the cabin in time. After the use, the cabin is disinfected for 30 minutes by a domestic active oxygen detoxification machine.
A pressure control method of a movable plateau slow-release cabin comprises the following steps,
(1) the pressure control method in the stage of establishing the sectional pressure comprises the following steps:
in the pressure establishing stage, the pressure difference value of the air inside and outside the slow release cabin is smaller than the pressure of the working cabin, firstly, the running frequency of the Roots blower is set on the touch screen outside the cabin, secondly, 3 sections of pressure difference range inside and outside the cabin are set according to the pressurizing speed from low to high, each section corresponds to a fixed frequency, the 3 fixed frequencies can be automatically switched according to the pressure and make the pressurizing flow keep consistent, and then the Roots blower pressurizes the flow for air supply according to the 3 sections of fixed frequencies of the pressure difference value of the air outside the cabin until the pressure in the cabin reaches the set working value;
(2) the pressure control method in the steady pressure dynamic ventilation stage comprises the following steps:
in the stable pressure dynamic ventilation stage, the pressure in the cabin reaches the working value, the pressurizing flow is automatically changed into the ventilation flow, the air inlet and the air outlet in the cabin are simultaneously carried out, the Roots blower operates in the set frequency range, the pressure in the cabin is maintained to be stable, and the pressure difference between the inside and the outside of the cabin is controlled to be in the specified range.
The invention has the following beneficial effects: (the arrangement of those parts should be specified, with what effect)
(1) In the pressure establishing stage, the present invention overcomes the non-linear flow rate in the whole pressure establishing process of the system, and supplies gas at a relatively stable pressurizing flow rate until the pressure reaches the working value.
(2) The control mechanism of the movable plateau slow-release cabin is suitable for being used by multiple persons of plateau field constructors, realizes controllability and visualization in the using process, has good running stability, can quickly relieve and temporarily eliminate plateau reaction of the plateau field constructors, and can be used in areas with different altitudes.
(3) The control mechanism of the invention is arranged in the movable plateau sealed slow-release cabin, and a dynamic ventilation control method of establishing and stabilizing pressure according to sectional pressure is adopted, so that a dynamic ventilation system which is in a low-altitude atmospheric pressure environment and keeps the cabin pressure stable is simulated, the air in the cabin is continuously updated by ventilation, the phenomena of low oxygen content and high carbon dioxide content are avoided, the temperature and the humidity in the pressurization cabin are normally adjusted by the air conditioner, and the cleanness, freshness, stable and comfortable climate environment of the air in the sealed pressurization cabin are ensured. The visual plateau operation device is suitable for plateau field constructors to use by multiple persons, controllability and visualization in the use process are realized, operation is stable and good, the plateau reaction of the plateau field constructors can be quickly relieved and temporarily eliminated, and the visual plateau operation device can be used in areas with different altitudes.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to clearly understand the technical solutions of the present invention and to implement the technical solutions according to the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below.
FIG. 1 is an assembly schematic of the present invention;
FIG. 2 is an assembled schematic view of the electrical control box;
FIG. 3 is an assembly schematic of a frequency converter cabinet;
FIG. 4 is an assembled schematic view of an extra-cabin touch screen enclosure;
fig. 5 is an assembled schematic view of the touch screen cabinet within the compartment.
Description of reference numerals:
1. an equipment compartment; 2. an air conditioner outdoor unit; 3. a gas reservoir bypass; 4. a bypass valve; 5. a gas storage tank; 6. an air conditioner pressurization drainage pipeline; 7. a main gas supply pipeline; 8. a flow meter; 9. a pressurizing solenoid valve; 10. a UPS (uninterrupted power supply); 11. an electrical control box; 12. a right side air inlet pipeline; 13. a touch screen box in the cabin; 14. an air-conditioning indoor unit; 15. a slow release cabin; 16. pulling a plate trailer; 17. an oxygen sensor; 18. a carbon dioxide sensor; 19. a temperature and humidity sensor; 20. an in-cabin pressure sensor; 21. a window interphone main machine; 22. an extra-cabin touch screen box; 23. a main hatch; 24. a pressure relief pipeline; 25. a silencing box; 26. a pressure reducing solenoid valve; 27. a domestic active oxygen detoxification machine; 28. sealing the threading opening; 29. a left side inlet line; 30. a partition plate; 31. a frequency converter box; 32. an outboard pressure sensor; 33. an air outlet pipe of the Roots blower; 34. a Roots blower; 35. an air inlet pipe of the Roots blower; 36. a belt; 37. a plateau variable frequency motor; 38. a plateau variable frequency motor ventilator; 39. a voltmeter; 40. a key switch; 41. a universal transfer switch; 42. an automatic/manual selection switch; 43. a relay; 44. A PLC; 45. a switch; 46. a frequency converter; 47. an extravehicular touch screen; 48. A window interphone auxiliary machine; 49. an outboard buzzer; 50. a sound attenuation button with a lamp is arranged outside the cabin; 51. an outboard scram button; 52. a stop button with a lamp outside the cabin; 53. a starting button with a lamp is arranged outside the cabin; 54. An in-cabin touch screen; 55. a cabin buzzer; 56. a lamp silencing button is arranged in the cabin; 57. an in-cabin emergency stop button; 58. a stop button with a lamp is arranged in the cabin; 59. the cabin is provided with a lamp starting button.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example 1
The embodiment relates to a control mechanism of a movable plateau slow-release cabin, and the control mechanism comprises a cabin body, an environment detection system, a pressure increasing and decreasing system, a temperature and humidity adjusting system, a UPS (uninterrupted power supply) 10, a PLC (programmable logic controller) control system and a trailer truck 16, wherein the cabin body is internally divided into an equipment cabin 1 and a slow-release cabin 15 by a partition plate 30, one end of the slow-release cabin 15 is provided with an opening, a main cabin door 23 is arranged at the opening in a sealing manner, the main cabin door 23 can be opened and closed, and the slow-release cabin 15 and the equipment cabin 1 are integrally installed on the trailer truck 16; the environment detection system, the pressure increasing and decreasing system, the temperature and humidity adjusting system, the UPS uninterruptible power supply 10 and the PLC control system are arranged on the slow release cabin 15 or the equipment cabin 1, and the environment detection system, the pressure increasing and decreasing system, the temperature and humidity adjusting system and the UPS uninterruptible power supply 10 are respectively and electrically connected with the PLC control system.
The PLC control system controls the pressure increasing and reducing system according to the pressure difference value of the air inside and outside the slow-release cabin, which is obtained by subtracting the pressure values of the air inside and outside the slow-release cabin and is provided by the environment detection system, and the automatic process control of the pressure increasing and reducing system for establishing the sectional pressure and dynamically changing the pressure is realized according to a corresponding pressure control method.
The control mechanism can be used for simulating a dynamic ventilation and air change system which is in a low-altitude atmospheric pressure environment and keeps cabin pressure stable according to a pressure control method of sectional pressure establishment and stable pressure dynamic air change in a movable plateau sealed slow-release cabin, air in the cabin is continuously updated through ventilation and air change, the phenomena of oxygen content reduction and carbon dioxide content increase are avoided, the temperature and the humidity in the pressurization cabin are adjusted through the temperature and humidity adjusting system, the cleanness and freshness of air in the sealed pressurization cabin are ensured, and the climate environment is stable and comfortable. And the control mechanism is arranged on a trailer plate vehicle 16 in a whole cabin and can be dragged, moved and moved by a tractor. The requirement of mobility, many people use, automatic control is satisfied, especially be suitable for many people of plateau field constructor and use, realized controllability, visual in the use, the operation is stable good, can alleviate fast and temporarily eliminate plateau field constructor's altitude response, can use in different altitude areas.
Example 2
On the basis of the above embodiment, further, the PLC control system includes an electrical control box 11, a frequency converter box 31, an outdoor touch screen box 22 and an indoor touch screen box 13, referring to fig. 1, the electrical control box 11 and the frequency converter box 31 are located in the equipment room 1 and are respectively installed on the partition board 30; the touch screen box 22 outside the cabin is installed on a main cabin door 23 of the slow release cabin 15, and the touch screen box 13 inside the cabin is located in the slow release cabin 15 and installed on the partition board 30. Furthermore, the UPS 10 is used for emergency power supply of the 220VAC loop and does not comprise the 380VAC loop and an air conditioner, and the UPS 10 is arranged on the bottom plate of the equipment compartment 1 and on the lower portion of the electrical control box 11, so that the protected equipment can be protected by the power supply for 30 minutes in a delayed mode, and the personnel can be guaranteed to have sufficient time.
Specifically, referring to fig. 2, the electrical control box 11 houses a PLC44, an exchange 45, a relay 43, a voltmeter 39, a universal switch 41, a key switch 40, an automatic/manual selection switch 42, and the like. Referring to fig. 3, only one frequency converter 46 is installed in the frequency converter box 31, the frequency converter 46 is installed independently to prevent interference with the operation of the PLC system, and the frequency converter 46 performs frequency acquisition and control through the PLC analog input/output expansion module by using an analog operation mode. Referring to fig. 4, the outdoor touch screen box 22 is equipped with an outdoor touch screen 47, an outdoor light-on start button 53, an outdoor light-on stop button 52, an outdoor scram button 51, an outdoor light-on mute button 50, and an outdoor buzzer 49, and a window interphone sub-set 48. Referring to fig. 5, the in-cabin touch screen box 13 is equipped with an in-cabin touch screen 54, an in-cabin on-light start button 59, an in-cabin on-light stop button 58, an in-cabin scram button 57, an in-cabin on-light mute button 56, and an in-cabin buzzer 55. The relevant buttons are operated on the extra-cabin touch screen box 22 or the intra-cabin touch screen box 13, and the system works according to a preset program. The off-board touch screen 47 and the on-board touch screen 54 can simultaneously display the real-time values of the sensors, the setting and operating frequency of the variable frequency motor, the operating conditions of the equipment, and the manual operation during debugging. The off-board touch screen 47 and the on-board touch screen 54 are connected with the PLC44 through the switch 45 by network cables for data exchange, and the addresses of the off-board touch screen 47, the on-board touch screen 54 and the PLC44 are set to be different IP addresses of the same network segment.
Further, the PLC44 is preferably an Ethernet-port integrated Siemens S7-200 SMART PLC with a CPU model SR30 (18-point input 12-point output), a digital output module EM DR08 (1 block), an analog input module EM AE04 (1 block), and an analog input/output module EM AM06 (1 block). The ethernet switch 45 selects scalnce XB005 through which the PLC and 2 touch screens exchange data. The frequency converter 46 is a three-phase AC 400V frequency converter, and is SINAMICS V202.2KW. The extravehicular touch panel 47 and the intravehicular touch panel 54 are Siemens SMART 700 IE having a 7-inch TFT display panel with a resolution of 800X 400 and a 64K true color display, and are integrated with an Ethernet interface. Other electrical components include relays 43, a voltmeter 39, a universal switch 41, a key switch 40, an automatic/manual selector switch 42, etc., and a control box of a brand model.
Example 3
On the basis of the embodiment 2, further referring to fig. 1, the environment detection system includes an oxygen sensor 17, a carbon dioxide sensor 18, a temperature and humidity sensor 19, an intra-cabin pressure sensor 20 and an extra-cabin pressure sensor 32, the extra-cabin pressure sensor 32 is installed on an interior trim panel of the equipment cabin 1, the intra-cabin pressure sensor 20, the oxygen sensor 17, the carbon dioxide sensor 18 and the temperature and humidity sensor 19 are installed on an interior trim panel of the slow release cabin 15, the oxygen sensor 17, the carbon dioxide sensor 18, the temperature and humidity sensor 19, the intra-cabin pressure sensor 20 and the extra-cabin pressure sensor 32 are respectively in signal connection with the PLC control system, the sensor signal is input into the expansion module through the PLC analog quantity to provide the PLC control system with the environmental parameters of the absolute pressure of the air outside the cabin, the absolute pressure of the air inside the cabin, the oxygen content, the carbon dioxide content, the temperature, the relative humidity and the like. Preferably, the measuring ranges of the pressure sensor 32 outside the cabin and the pressure sensor 20 in the cabin are 0-0.2 MPa; the measurement range of the oxygen sensor 17 is 0-30% Vol; the measurement range of the carbon dioxide sensor 18 is 0-1% Vol; the temperature and humidity sensor 19 has a temperature measurement range of-40 to 80 ℃ and a humidity measurement range of 0 to 100% RH; the oxygen sensor 17, the carbon dioxide sensor 18, the temperature and humidity sensor 19, the cabin pressure sensor 20 and the cabin outer pressure sensor 32 are all powered by 24VDC, and output signals are 4-20 mA.
In practical application, the pressure sensor 20 and the pressure sensor 32 transmit the real-time detected pressure value of the air inside and outside the slow-release cabin to the PLC44, the PLC44 compares the difference between the pressure difference between the air inside and outside the cabin and the obtained difference between the pressure difference and the set value, and adjusts the air supply flow of the roots blower 34 by adjusting the speed of the plateau variable frequency motor 37 through the frequency converter 46 according to the comparison result.
As a further preferred embodiment, the outdoor pressure sensor 32, the indoor pressure sensor 20, the oxygen sensor 17, the carbon dioxide sensor 18, the temperature and humidity sensor 19, the flow meter 8, the frequency output of the frequency converter 46, the normally open contact of the indoor lamp-on-start button 59, the normally open contact of the indoor lamp-on-stop button 58, the normally open contact of the indoor emergency stop button 57, the normally open contact of the indoor lamp-on-mute button 56, the normally open contact of the outdoor lamp-on-start button 53, the normally open contact of the outdoor lamp-on-stop button 52, the normally open contact of the outdoor emergency stop button 51, and the normally open contact of the outdoor lamp-on-mute button 50 all provide input signals to the PLC 44; the frequency input of the frequency converter 46, the pressurization electromagnetic valve 9, the decompression electromagnetic valve 26, an indicator lamp of a start button 59 with a lamp in the cabin, an indicator lamp of a stop button 58 with a lamp in the cabin, an indicator lamp of a silencing button 56 with a lamp in the cabin, an indicator lamp of a start button 53 with a lamp outside the cabin, an indicator lamp of a stop button 52 with a lamp outside the cabin, an indicator lamp of a silencing button 50 with a lamp outside the cabin, a buzzer 55 in the cabin, a buzzer 49 outside the cabin, a plateau variable frequency motor 37 and a plateau electric frequency motor ventilator 38 are all output and controlled by the PLC 44; the PLC44 communicates with the outdoor touch panel 47 and the indoor touch panel 54 through the switch 45 by being connected via a network cable.
Example 4
Further, referring to fig. 1, the temperature and humidity control system includes air condensing units 2, air conditioning indoor units 14, air conditioning pressurization drain line 6, air condensing units 2 installs on the bottom plate of equipment cabin 1, and air conditioning indoor units 14 are located slow release cabin 15 to install on baffle 30, 14 delivery ports in the air conditioning are connected to the one end of air conditioning pressurization drain line 6, and the other end of air conditioning pressurization drain line 6 passes baffle 30 to stretch out outside the equipment cabin 1, air conditioning pressurization drain line 6 has one section vertical pipeline in the equipment cabin 1, it needs to explain that, need to store water in the air conditioning pressurization drain line when the air conditioner uses, makes the height of retaining in the vertical pipeline be water pressure and equals cabin internal pressure working value.
The air conditioner supercharging drainage pipeline 6 solves the drainage problem of the air conditioner working in the sealed supercharging cabin, can ensure that the air conditioner normally drains water out of the cabin when working pressure value, and can also ensure the cabin to be sealed. The invention adopts the air conditioner to adjust the temperature and the humidity, and the environmental parameters and the equipment running state information collected by the PLC are displayed on the double touch screens. When the personnel in the cabin feel sultry, the air conditioner is started, the temperature and the humidity in the cabin can be controlled, and the comfort level of the personnel in the cabin is improved.
Example 5
Further, referring to fig. 1, the auxiliary system includes a window interphone main body 21, a window interphone auxiliary body 48 and a household oxygen detoxification machine 27, the window interphone auxiliary body 48 is installed in the touch screen box 22 outside the slow release cabin, and the window interphone main body 21 and the household oxygen detoxification machine 27 are installed on an interior trim panel near the main cabin door 23 in the slow release cabin 15. When needed, the window interphone is started, and the person on duty outside the cabin and the person in the cabin can communicate with each other to know the situation in the cabin in time. After use, the cabin is disinfected for 30 minutes by the domestic active oxygen detoxification machine 27.
Example 6
On the basis of the above embodiment, further, referring to fig. 1, the pressure increasing and decreasing system includes a gas storage tank 5 and a roots blower 34, the gas storage tank 5 and the roots blower 34 are respectively installed on the bottom plate of the equipment compartment 1, the roots blower 34 is connected with a roots blower air inlet pipe 35 and a roots blower air outlet pipe 33, one end of the roots blower air inlet pipe 35 extends out of the equipment compartment 1, the roots blower air outlet pipe 33 is connected with the gas storage tank 5, the gas storage tank 5 is connected with a main gas supply pipeline 7, an outlet of the main gas supply pipeline 7 is divided into two paths, one path is a left gas inlet pipe 29, the other path is a right gas inlet pipe 12, and the left gas inlet pipe 29 and the right gas inlet pipe 12 respectively penetrate through the partition plate 30 and extend into the slow release compartment 15. Compressed air enters the slow release cabin 15 through the left air inlet pipeline 29 and the right air inlet pipeline 12 through the air supply main pipeline 7 after being subjected to pressure buffering and air filtering by the air storage tank 5.
The Roots blower 34 is used as an air source to continuously supply air into the sealed slow-release cabin 15, and the Roots blower 34 selects the air pressure of 30kPa and the power of 2.2 KW. Furthermore, the Roots blower 34 is in transmission connection with a plateau variable frequency motor 37 through a belt 36, the plateau variable frequency motor 37 is in communication connection with the PLC control system, and the plateau variable frequency motor 37 is subjected to frequency conversion and speed regulation by the PLC control system to realize the adjustment of the air supply flow of the Roots blower 34; the plateau variable frequency motor 37 is connected with a plateau variable frequency motor ventilator 38, the plateau variable frequency motor ventilator 38 is in communication connection with the PLC control system, and the plateau variable frequency motor ventilator 38 cannot adjust the speed to carry out air cooling on the plateau variable frequency motor at a rated rotating speed.
Furthermore, an air storage tank bypass 3 is connected to the air storage tank 5, and one end of the air storage tank bypass 3 extends out of the equipment cabin 1; the bypass valve 4 is installed on the air storage tank bypass 3, and the bypass valve 4 can be manually opened to release pressure when necessary. The gas supply main pipeline 7 is provided with a flowmeter 8 and a pressurizing electromagnetic valve 9, and the pressurizing electromagnetic valve 9 is in communication connection with the PLC control system and used for controlling the on-off of the gas supply main pipeline 7; a pressure relief pipeline 24 is arranged on the slow release cabin 15, one end of the pressure relief pipeline 24 extends out of the slow release cabin 15 and is connected to a silencing box 25, and the silencing box 25 is used for reducing air leakage noise; the pressure relief pipeline 24 is provided with a pressure relief solenoid valve 26, the pressure relief solenoid valve 26 is positioned in the slow release cabin 15, and the pressure relief solenoid valve 26 is in communication connection with the PLC control system and used for controlling the on-off of the pressure relief pipeline 24.
Specifically, the flow value of the supplied air is detected by the flowmeter 8, and the flow signal is input into the PLC control system through the analog quantity input expansion module. The pressurizing electromagnetic valve 9 controls the on-off of the air supply main pipeline 7, the pressure reducing electromagnetic valve 26 controls the on-off of the pressure relief pipeline 24, the pressurizing electromagnetic valve 9 is connected with a normally open contact of the relay 43, the pressure reducing electromagnetic valve 26 is connected with a normally closed contact of the relay 43, and the relay 43 is controlled by a PLC control system to be closed or opened. Flowmeter 8 full scale flow 120m3And h, displaying instantaneous flow and accumulated flow, supplying power by 24VDC, and outputting a signal of 4-20 mA. The pressurizing electromagnetic valve 9 and the pressure reducing electromagnetic valve 26 adopt a straight-through normally closed electromagnetic valve and are powered by 220 VAC.
Example 7
On the basis of the embodiment 6, the movable plateau slow-release cabin control mechanism is designed with pressurizing flow and exchanging flow, the variable-frequency speed-regulating plateau variable-frequency motor of the PLC control system realizes the adjustment of the air supply flow of the Roots blower, the pressurizing flow is small, the movable plateau slow-release cabin control mechanism is designed according to the pressurizing speed, three fixed frequency switches are arranged along with the pressure change in the cabin, and the movable plateau slow-release cabin control mechanism is applied to the establishment of segmented pressure; the ventilation flow is large, the ventilation flow is designed according to the rated number of users and is related to the pressure relief rate, and the matched fan running frequency is set on the touch screen 47 outside the cabin and is applied to stable-pressure dynamic ventilation.
In the pressure establishing stage, when the Roots blower 34 is used for supplying air to the sealed cabin, the air supply flow is reduced along with the increase of the pressure in the cabin, and the phenomenon accords with the critical pressure ratio relation, namely when the ratio of the air source pressure to the pressure in the container is greater than the critical pressure ratio, the inflation process is a sonic inflation process, the inflation flow is a fixed value, and the container pressure and the inflation time are in a linear relation; when the ratio of the air source pressure to the container pressure is greater than the critical pressure ratio, the aeration speed is reduced, the flow is subsonic, the aeration pressure is increased, the flow is gradually reduced, and the container pressure and the aeration time are in a nonlinear relationship from reaching the critical pressure to ending the aeration. In order to overcome the defect of unstable flow in the inflation process, 3 sections with the pressure difference range from low to high inside and outside the cabin are arranged in the pressure establishment stage, each section corresponds to a fixed frequency, the 3 fixed frequencies are automatically switched according to the pressure and can enable the pressurizing flow to be basically consistent, namely, the gas is supplied at a relatively stable pressurizing flow until the pressure reaches a working value.
When the pressure in the cabin reaches a working value, the pressurizing flow is automatically changed into the ventilation flow, air inlet and air leakage in the cabin are simultaneously carried out at the moment, the pressure in the cabin is maintained to be stable, a continuous ventilation effect is achieved, the phenomena of low oxygen content and high carbon dioxide content are avoided, the temperature and the humidity are adjusted by the air conditioner, the cleanness and the freshness of the air in the cabin are ensured, and the climate environment is stable and comfortable. In the stable pressure dynamic ventilation stage, the roots blower 34 operates near the set frequency value of the touch screen 47 outside the cabin, the pressure difference inside and outside the cabin is adjusted within the specified deviation, and the adjustment times depend on the set frequency value of the blower. The adjustment times are less when the deviation of the set frequency value is small, and the adjustment times are frequent when the deviation of the set value is large.
The implementation also provides a pressure control method of the movable plateau slow-release cabin, which comprises the steps of
(1) The pressure control method in the stage of establishing the sectional pressure comprises the following steps:
in the pressure establishing stage, the pressure difference value of the air inside and outside the cabin is smaller than the pressure of the working cabin, firstly, the running frequency of the Roots blower 34 is set on the touch screen outside the cabin, secondly, 3 sections of pressure difference range of the air inside and outside the cabin are set according to the pressurizing speed from low to high, each section corresponds to a fixed frequency, the 3 fixed frequencies can be automatically switched according to the pressure and make the pressurizing flow keep consistent, and then the Roots blower 34 pressurizes the flow for air supply according to the 3 sections of fixed frequencies of the pressure difference value of the air inside and outside the cabin until the pressure in the cabin reaches the set working value;
(2) the pressure control method in the steady pressure dynamic ventilation stage comprises the following steps:
in the stable pressure dynamic ventilation stage, the pressure in the cabin reaches the working value, the pressurizing flow is automatically changed into the ventilation flow, the air inlet and the air outlet in the cabin are simultaneously carried out, and the Roots blower 34 operates in the set frequency range to maintain the stable pressure in the cabin. The pressure difference between the inside and the outside of the control cabin is in a specified range.
Example 8
Based on the pressure control method for establishing the segmented pressure and dynamically ventilating the stabilized pressure, the working process of the system is as follows:
before entering the cabin, the key switch 40 is used for supplying power to the electric control box 11, and the universal change-over switch 41 is rotated to display three-phase voltage by the voltmeter 39. The automatic/manual selection switch 42 is turned to an automatic position, and the running frequency of the Roots blower is set on the extravehicular touch screen 47; after entering the cabin, the main cabin door 23 is tightly closed; pressing the start button 59 with the lamp in the cabin or the start button 53 with the lamp outside the cabin, sucking the pressurizing electromagnetic valve 9, pressurizing the Roots blower 34 by 3 sections of fixed frequency according to the difference value of the internal pressure and the external pressure in the cabin, wherein the pressurizing flow is small and is 3 from small to large, the pressurizing flow depends on the pressurizing rate, and the pressure in the cabin reaches 19kPa after about 10 minutes; after the pressure reaches 19kPa, the Roots blower 34 pressurizes according to the frequency (the set value is plus 1); after the pressure is increased to 20kPa, the frequency of the fan is stabilized by a set value, at the moment, the pressure reducing electromagnetic valve 26 is closed, the air inside and outside the cabin starts to circulate according to the ventilation flow, and CO is ensured in the use stage of stabilizing the pressure2And O2The content is in a safe range; if the differential pressure is greater than 21kPa, the Roots blower 34 is pressurized at a (set value-1) frequency; namely, in the stage of pressure stabilization and air exchange, the pressure is adjusted within 19 kPa-21 kPa, the adjusting times depend on the set value of the fan frequency, and the deviation of the set valueThe small adjustment times are less, and the large deviation of the setting value is frequent; when one environmental parameter is larger than an alarm value or the frequency converter 46 fails, the cabin outer buzzer 49 and the cabin inner buzzer 55 simultaneously give out sound and light alarms, and the system automatically stops in sequence or manually presses the cabin outer emergency stop button 51 or the cabin inner emergency stop button 57; when the personnel in the cabin feel sultry, the air conditioner is started, the temperature and the humidity in the cabin can be controlled, and the comfort level of the personnel in the cabin is improved; when needed, the window interphone is started, and the cabin personnel and the outside duty personnel can communicate to know the cabin condition in time; after the use is finished, pressing the stop button 52 with the lamp outside the cabin or the stop button 58 with the lamp inside the cabin to stop pressurizing, stopping the work of the Roots blower 34 and the pressurizing electromagnetic valve 9, automatically reducing the pressure to 0.5kPa in about 10 minutes, stopping the work of the pressure reducing electromagnetic valve 26, and opening the main cabin door 23 to leave the cabin; when the device is not used for a long time, the control system is powered off. When the automatic/manual selection switch 42 is turned to a manual position, the pressurizing electromagnetic valve, the pressure reducing electromagnetic valve, the plateau variable frequency motor and the plateau variable frequency motor ventilator can be started and stopped manually.
In conclusion, the invention can simulate a dynamic ventilation system which is used for keeping the cabin pressure stable and is used for establishing and stabilizing the dynamic ventilation control method according to the sectional pressure in the movable plateau sealed slow-release cabin, the air in the cabin is continuously updated by the ventilation, the phenomena of low oxygen content and high carbon dioxide content are avoided, the temperature and the humidity in the pressurization cabin are normally adjusted by the air conditioner, and the cleanness, freshness, stable and comfortable climate environment of the air in the sealed pressurization cabin are ensured. The visual plateau operation device is suitable for plateau field constructors to use by multiple persons, controllability and visualization in the use process are realized, operation is stable and good, the plateau reaction of the plateau field constructors can be quickly relieved and temporarily eliminated, and the visual plateau operation device can be used in areas with different altitudes.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.

Claims (10)

1. A control mechanism of a movable plateau slow-release cabin is characterized in that: the control mechanism at least comprises a cabin body, an environment detection system, a pressure increasing and decreasing system, a temperature and humidity adjusting system, a UPS (uninterrupted power supply) uninterrupted power supply (10), a PLC control system and a trailer (16),
the interior of the cabin body is divided into an equipment cabin (1) and a slow release cabin (15) by a partition plate (30), one end of the slow release cabin (15) is provided with an opening, a main cabin door (23) is arranged at the opening in a sealing manner, and the slow release cabin (15) and the equipment cabin (1) are integrally installed on a trailer (16);
the environment detection system, the pressure increasing and decreasing system, the temperature and humidity adjusting system, the UPS (uninterrupted power supply) (10) and the PLC control system are arranged on the slow release cabin (15) or the equipment cabin (1), and the environment detection system, the pressure increasing and decreasing system, the temperature and humidity adjusting system and the UPS (uninterrupted power supply) (10) are respectively and electrically connected with the PLC control system; the PLC control system controls the pressure increasing and reducing system according to the air pressure difference value obtained by subtracting the air pressure values inside and outside the slow release cabin provided by the environment detection system and a corresponding pressure control method to realize the automatic process control of sectional pressure establishment and stable pressure dynamic ventilation.
2. The control mechanism of the mobile plateau slow-release capsule as claimed in claim 1, wherein: the pressure increasing and reducing system comprises a gas storage tank (5) and a Roots blower (34), wherein the gas storage tank (5) and the Roots blower (34) are respectively installed on a bottom plate of the equipment cabin (1), a Roots blower air inlet pipe (35) and a Roots blower air outlet pipe (33) are connected to the Roots blower (34), one end of the Roots blower air inlet pipe (35) extends out of the equipment cabin (1), the Roots blower air outlet pipe (33) is connected with the gas storage tank (5), a main gas supply pipeline (7) is connected to the gas storage tank (5), an outlet of the main gas supply pipeline (7) is divided into two paths, one path is a left gas inlet pipe (29), the other path is a right gas inlet pipe (12), and the left gas inlet pipe (29) and the right gas inlet pipe (12) respectively penetrate through the partition plate (30) and extend into the slow-release cabin (15).
3. The control mechanism of the mobile plateau slow-release capsule as claimed in claim 2, wherein: the Roots blower (34) is connected with a plateau variable frequency motor (37) through a belt (36) in a transmission mode, a plateau variable frequency motor ventilator (38) is connected to the plateau variable frequency motor (37), the plateau variable frequency motor (37) and the plateau variable frequency motor ventilator (38) are respectively in communication connection with the PLC control system, and the plateau variable frequency motor (37) is subjected to variable frequency speed regulation through the PLC control system so as to achieve regulation of the air supply flow of the Roots blower (34).
4. The control mechanism of the mobile plateau slow-release capsule as claimed in claim 2, wherein: a bypass (3) of the gas storage tank is connected to the gas storage tank (5), one end of the bypass (3) of the gas storage tank extends out of the equipment cabin (1), and a bypass valve (4) is installed on the bypass (3) of the gas storage tank; a flowmeter (8) and a pressurizing electromagnetic valve (9) are installed on the gas supply main pipeline (7), and the pressurizing electromagnetic valve (9) is in communication connection with the PLC control system and used for controlling the on-off of the gas supply main pipeline (7); the slow release cabin (15) is provided with a pressure relief pipeline (24), the pressure relief pipeline (24) is provided with a pressure relief solenoid valve (26), and the pressure relief solenoid valve (26) is in communication connection with the PLC control system and used for controlling the on-off of the pressure relief pipeline (24).
5. The control mechanism of the mobile plateau slow-release capsule as claimed in claim 1, wherein: temperature humidity control system includes air condensing units (2), air conditioning indoor unit (14), air conditioning pressure boost drain line (6), install on the bottom plate of equipment cabin (1) air condensing units (2), and air conditioning indoor unit (14) are located slowly-releasing cabin (15) to install on baffle (30), air conditioning indoor unit (14) delivery port is connected to the one end of air conditioning pressure boost drain line (6), and the other end of air conditioning pressure boost drain line (6) passes baffle (30) to stretch out outside equipment cabin (1).
6. The control mechanism of the mobile plateau slow-release capsule as claimed in claim 2, wherein: the PLC control system comprises an electrical control box (11), a frequency converter box (31), an extra-cabin touch screen box (22) and an intra-cabin touch screen box (13), wherein the electrical control box (11) and the frequency converter box (31) are located in the equipment cabin (1) and are respectively installed on a partition plate (30), and the UPS uninterrupted power supply (10) is installed on a bottom plate of the equipment cabin (1) and is located at the lower part of the electrical control box (11); the touch screen box (13) in the cabin is positioned in the slow release cabin (15) and is arranged on the partition plate (30); the touch screen box (22) outside the slow release cabin (15) is arranged on the right side of the main cabin door (23).
7. The control mechanism of the mobile plateau slow-release capsule as claimed in claim 6, wherein: the environment detection system comprises an oxygen sensor (17), a carbon dioxide sensor (18), a temperature and humidity sensor (19), an in-cabin pressure sensor (20) and an out-cabin pressure sensor (32), the out-cabin pressure sensor (32) is installed on an interior trim panel of the equipment cabin (1), the in-cabin pressure sensor (20), the oxygen sensor (17), the carbon dioxide sensor (18) and the temperature and humidity sensor (19) are installed on the interior trim panel of the slow release cabin (15), and the oxygen sensor (17), the carbon dioxide sensor (18), the temperature and humidity sensor (19), the in-cabin pressure sensor (20) and the out-cabin pressure sensor (32) are respectively in signal connection with the PLC control system.
8. The control mechanism of the mobile plateau slow-release capsule as claimed in claim 7, wherein: a PLC (44) is arranged in the electric control box (11), a frequency converter (46) is arranged in the frequency converter box (31), and the frequency converter (46) adopts an analog quantity working mode and carries out frequency acquisition and control through a PLC analog quantity input or output expansion module; the pressure sensor (20) in the cabin and the pressure sensor (32) outside the cabin transmit the real-time detected internal and external air pressure values of the slow release cabin to the PLC (44), the PLC (44) compares the air pressure difference value obtained by subtracting the internal and external air pressure values of the slow release cabin with a set value, and the plateau variable frequency motor (37) is regulated through the frequency converter (46) according to the comparison result so as to regulate the air supply flow of the Roots blower (34); the air supply flow is designed with a pressurization flow and a ventilation flow, the pressurization flow is designed according to a pressurization rate, three fixed frequency switches are provided along with the pressure change in the cabin, and the three fixed frequency switches are applied to the establishment of the sectional pressure; the ventilation flow is designed according to the rated number of people, is related to the pressure relief rate, and is applied to the pressure stabilization dynamic ventilation.
9. The control mechanism of the mobile plateau slow-release capsule as claimed in claim 6, wherein: the control mechanism further comprises an auxiliary system, wherein the auxiliary system comprises a window interphone main body (21), a window interphone auxiliary body (48) and a household active oxygen detoxification machine (27), the window interphone auxiliary body (48) is installed in a touch screen box (22) outside the cabin, and the window interphone main body (21) and the household active oxygen detoxification machine (27) are installed on an interior trim panel, close to one side of the main cabin door (23), in the slow release cabin (15).
10. A pressure control method of a movable plateau slow-release cabin is characterized by comprising the following steps
The pressure control method in the stage of establishing the sectional pressure comprises the following steps:
in the pressure establishment stage, the pressure difference value of the air inside and outside the slow release cabin is smaller than the pressure of the working cabin, firstly, the running frequency of a Roots blower (34) is set on an external touch screen (22), secondly, 3 sections of pressure difference range of the air inside and outside the slow release cabin are set according to the pressurizing speed from low to high, each section corresponds to a fixed frequency, the 3 fixed frequencies can be automatically switched according to the pressure and make the pressurizing flow consistent, and then the Roots blower (34) pressurizes the gas at the 3 sections of fixed frequencies according to the pressure difference value of the air inside and outside the slow release cabin until the pressure in the slow release cabin reaches the set working value;
the pressure control method in the steady pressure dynamic ventilation stage comprises the following steps:
in the stage of stable pressure dynamic air exchange, the pressure in the cabin reaches a working value, the pressurizing flow is automatically changed into the air exchange flow, air inlet and air outlet in the cabin are simultaneously carried out, the Roots blower (34) operates in a set frequency range, the pressure in the cabin is maintained to be stable, and the pressure difference between the inside and the outside of the cabin is controlled to be in a specified range.
CN202111311040.4A 2021-11-08 2021-11-08 Control mechanism and pressure control method of movable plateau slow-release cabin Pending CN113952143A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115095187A (en) * 2022-03-24 2022-09-23 成都格力新晖医疗装备有限公司 Mobile laboratory and cabin body mechanism thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115095187A (en) * 2022-03-24 2022-09-23 成都格力新晖医疗装备有限公司 Mobile laboratory and cabin body mechanism thereof
CN115095187B (en) * 2022-03-24 2023-10-03 成都格力新晖医疗装备有限公司 Mobile laboratory and cabin mechanism thereof

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