CN108730762B - Uninterrupted air supply device - Google Patents

Uninterrupted air supply device Download PDF

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Publication number
CN108730762B
CN108730762B CN201810879148.5A CN201810879148A CN108730762B CN 108730762 B CN108730762 B CN 108730762B CN 201810879148 A CN201810879148 A CN 201810879148A CN 108730762 B CN108730762 B CN 108730762B
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China
Prior art keywords
gas
valve
air supply
pressure
alarm
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CN201810879148.5A
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CN108730762A (en
Inventor
赖炳南
李业伟
赖孔泉
樊海光
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Guangxi Kangrui Medical Equipment Co ltd
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Rongxian Kangrui Medical Equipment Co ltd
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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
    • 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
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Pipeline Systems (AREA)

Abstract

The invention discloses an uninterrupted air supply device, which comprises: one end of the first gas transmission main pipe is communicated with a main gas supply source, and the other end of the first gas transmission main pipe is communicated with a gas output pipeline or a gas output port; the first pneumatic valve is arranged on the first gas transmission main pipe and is a normally closed valve; one end of the second gas transmission main pipe is communicated with the standby gas source, and the other end of the second gas transmission main pipe is communicated with the gas output pipeline or the gas output port; the second pneumatic valve is arranged on the second gas transmission main pipe and is a normally open valve. The invention connects the main air supply source and the standby air supply source in series, so that the main air supply source and the standby air supply source are fully automatically switched within 0.5-1s, and the uninterrupted air utilization of an air utilization unit is ensured.

Description

Uninterrupted air supply device
Technical Field
The invention relates to the technical field of medical equipment. More particularly, the present invention relates to uninterruptible gas supplies.
Background
The gas supply systems in various fields of industry, medical treatment and the like need continuous gas supply, and the types and pressure levels of the gas supply are different. In order to realize uninterrupted air supply, two air sources are adopted, wherein one air source is a main air supply source, and the other air source is a standby air source. When the pressure of the main air supply source is reduced to a preset value, the standby air supply source is switched, namely the standby air supply source starts to supply air, and the air is output through the uninterrupted air supply device, so that uninterrupted air supply is realized.
The switching device in the current market is provided with a solenoid valve control switching device and a gas pressure difference switching device, the gas supply sources of the devices are balanced left and right, no primary and secondary parts exist, and the gas sources can only be circularly switched and used in sequence left and right. I.e. without distinguishing between the primary and backup air supplies. The existing electromagnetic valve control switching device has the problem that the switching device cannot be switched when power is cut off; the conventional gas pressure difference switching device has the problem that the gas with the pressure below 1.0MPa cannot be switched.
Disclosure of Invention
The invention aims to provide an uninterrupted air supply device, which is used for connecting a main air supply source and a standby air supply source in series, so that the main air supply source and the standby air supply source are fully-automatically switched between 0.5 s and 1.0s, and uninterrupted air utilization of an air utilization unit is ensured.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided an uninterruptible gas supply including:
an air supply control device, comprising:
one end of the first gas transmission main pipe is communicated with a main gas supply source, and the other end of the first gas transmission main pipe is communicated with a gas output pipeline or a gas output port;
the first pneumatic valve is arranged on the first gas transmission main pipe and is a normally closed valve;
one end of the second gas transmission main pipe is communicated with the standby gas source, and the other end of the second gas transmission main pipe is communicated with the gas output pipeline or the gas output port;
The second pneumatic valve is arranged on the second gas transmission main pipe and is a normally open valve.
Preferably, in the uninterruptible air supply device, the air supply control device further includes:
a controller;
the first electromagnetic valve is arranged on the first gas transmission main pipe and is positioned between the first pneumatic valve and one end of the first gas transmission main pipe, and the first electromagnetic valve is connected with the controller;
one end of the exhaust pipe is communicated with a part of the first gas transmission main pipe, which is positioned between the first pneumatic valve and the first electromagnetic valve, and the other end of the exhaust pipe is open;
the second electromagnetic valve is arranged on the exhaust pipe and is connected with the controller;
the pressure detector is communicated with the main air supply source and is connected with the controller;
wherein, the executor of first pneumatic valve and second pneumatic valve communicates with the one end of blast pipe respectively.
Preferably, in the uninterruptible air supply device, the air supply control device further includes:
the first stop valve is arranged on the first gas transmission main pipe and is positioned between the first pneumatic valve and one end of the exhaust pipe;
the second stop valve is arranged on the second gas transmission main pipe and is positioned between the second pneumatic valve and one end of the second gas transmission main pipe.
Preferably, in the uninterruptible air supply device, the air supply control device further includes:
the first check valve is arranged on the first gas transmission main pipe and is positioned between the first stop valve and the first pneumatic valve.
Preferably, in the uninterruptible air supply device, the air supply control device further includes: the first ball valve is arranged on the first gas transmission main pipe and is positioned between the first pneumatic valve and the other end of the first gas transmission main pipe;
one end of the first gas transmission branch pipe is communicated with a part of the first gas transmission main pipe, which is positioned between the first check valve and the first stop valve, and the other end of the first gas transmission branch pipe is communicated with a part of the first gas transmission main pipe, which is positioned between the first ball valve and the other end of the first gas transmission main pipe;
the third pneumatic valve is arranged on the first gas transmission branch pipe, an actuator of the third pneumatic valve is communicated with one end of the exhaust pipe, and the third pneumatic valve is a normally closed valve;
a second check valve disposed on the first gas delivery manifold and located between the third pneumatic valve and one end of the first gas delivery manifold;
the second ball valve is arranged on the first gas transmission branch pipe and is positioned between the third pneumatic valve and the other end of the first gas transmission branch pipe;
One end of the second gas transmission branch pipe is communicated with a part of the first gas transmission main pipe, which is positioned between the first stop valve and the first check valve, and the other end of the second gas transmission branch pipe is communicated with a part of the first gas transmission branch pipe, which is positioned between the second ball valve and the other end of the first gas transmission branch pipe;
a third cutoff valve provided on the second gas delivery branch pipe; wherein, the part of the first gas transmission main pipe which is positioned between the first pneumatic valve and the first check valve is communicated with the part of the first gas transmission branch pipe which is positioned between the third pneumatic valve and the second check valve.
Preferably, in the uninterruptible air supply device, the air supply control device further includes:
the third ball valve is arranged on the second gas transmission main pipe and is positioned between the second pneumatic valve and the other end of the second gas transmission main pipe;
one end of the third gas transmission branch pipe is communicated with a part of the second gas transmission main pipe, which is positioned between the second stop valve and the second pneumatic valve, and the other end of the third gas transmission branch pipe is communicated with a part of the first gas transmission main pipe, which is positioned between the other end of the first gas transmission branch pipe and the other end of the first gas transmission main pipe;
the fourth pneumatic valve is arranged on the third gas transmission branch pipe, an actuator of the fourth pneumatic valve is communicated with one end of the exhaust pipe, and the fourth pneumatic valve is a normally open valve;
The fourth ball valve is arranged on the third gas transmission branch pipe and is positioned between the fourth pneumatic valve and the other end of the third gas transmission branch pipe;
one end of the fourth gas transmission branch pipe is communicated with a part of the second gas transmission main pipe, which is positioned between the second stop valve and one end of the third gas transmission branch pipe, and the other end of the fourth gas transmission branch pipe is communicated with a part of the first gas transmission main pipe, which is positioned between the other end of the first gas transmission branch pipe and the other end of the third gas transmission branch pipe;
and the fourth stop valve is arranged on the fourth gas transmission branch pipe.
Preferably, in the uninterrupted air supply device, the pressure detector is a photoelectric pressure gauge, the detection limit of the photoelectric pressure gauge is 0.4-0.5MPa, and the starting pressures of the first pneumatic valve, the second pneumatic valve, the third pneumatic valve and the fourth pneumatic valve are all 0.2-1.0MPa.
Preferably, the uninterrupted air supply device further comprises:
air feed monitoring alarm device, it includes:
a housing;
the main air supply pressure gauge is communicated with the main air supply and displays the pressure of the main air supply, the standby air supply pressure gauge is communicated with the standby air supply and displays the pressure of the standby air supply, and the gas output pressure gauge is communicated with the gas output pipeline and displays the gas pressure of the gas output pipeline;
The gas switching control display screen is embedded on the shell and is used for switching and displaying the communication between the main gas supply source or the standby gas supply source and the gas output pipeline;
the gas purity analysis display screen is embedded on the shell and is used for detecting and displaying the gas purity of the gas output pipeline;
the remote alarm is arranged on the shell, and is used for alarming when any one of the pressure of the main air supply source, the standby air supply source or the air output pipeline deviates from a threshold range representing safety, and automatically sending alarm signals and information to the terminal;
the standby power supply is accommodated in the shell and supplies power to the gas switching control display screen, the gas purity analysis display screen and the remote alarm;
the main air supply alarm, the standby air supply alarm and the gas output alarm are respectively arranged on the shell, and are respectively electrically connected with the main air supply pressure gauge, the standby air supply pressure gauge and the gas output pressure gauge;
Wherein, main air supply source alarm sets up to: when the pressure of the main air supply source is lower than a preset lower limit threshold value, the main air supply source alarm gives an alarm;
the standby air source is a busbar formed by a standby first high-pressure air source, a standby second high-pressure air source and a standby low-pressure air source, and the standby air source alarm is set as follows: when the pressure of any one of the first high-pressure air source, the second high-pressure air source or the standby low-pressure air source is lower than a preset lower limit threshold value or the pressure of the standby low-pressure air source is higher than a preset upper limit threshold value, the standby air source alarm alarms;
the gas output alarm is set as follows: and when the pressure of the gas output pipeline is lower than a preset lower limit threshold value or higher than a preset upper limit threshold value, the gas output alarm alarms.
Preferably, in the uninterrupted air supply device, the main air supply source alarm, the standby air supply source alarm and the air output alarm are all installed on the shell in the form of an alarm assembly, and the alarm assembly comprises:
the guide cylinder is horizontally arranged on the axis, the guide cylinder is rotatably embedded and installed on the shell through a bearing, one end of the guide cylinder is fixedly connected with an output shaft of the motor, the other end of the guide cylinder is flush with the outer surface of the shell, the inner wall of the guide cylinder, which is close to the motor, is provided with internal threads, the inner wall of the guide cylinder is symmetrically provided with a pair of first positioning buckles, and the first positioning buckles are arranged along the length direction of the guide cylinder and have L-shaped vertical sections;
The guide column is horizontally arranged on the axis, the length of the guide column is not greater than that of the guide cylinder, an external thread matched with the internal thread is arranged on the outer wall of the guide column, a pair of second locating buckles are further arranged on the outer wall of the guide column, the second locating buckles are arranged along the length direction of the guide column, the vertical section is L-shaped, the pair of first locating buckles limit the pair of second locating buckles to rotate, and a loudspeaker is arranged on the outward end face of the guide column; the outer wall of the guide post is also provided with at least one group of storage grooves and damping grooves in sequence along the length direction of the guide post, and two opposite side walls of the storage grooves are provided with sliding rails;
at least one warning post, the tip of warning post articulates on the guide post, and the position of pin joint sets up to: when the guide post rotates to a limit far away from the guide barrel, the warning post fully extends out of the guide barrel, one end, far away from the loudspeaker, of the storage groove is connected with the warning post through a pressure spring, a sliding rod is hinged to the warning post, the free end of the sliding rod slides in the sliding rail, a plurality of warning lamps and damping blocks are further arranged on the warning post in a line shape along the length direction of the warning post, when the free end of the sliding rod slides to one end, far away from the loudspeaker, of the storage groove, the warning post is vertically arranged, the warning lamps and the loudspeaker face the same direction, when the free end of the sliding rod slides to the other end, close to the loudspeaker, of the storage groove, the damping blocks are stored in the damping grooves, the warning lamps are stored in the storage groove and do not touch the bottom, the warning post is horizontally arranged parallel to the guide post, and the radial projection of the warning post is positioned in an annular gap between the guide post and the guide barrel;
The main air supply pressure gauge, the standby air supply pressure gauge, the air output pressure gauge, the loudspeaker of the main air supply alarm, the loudspeaker of the standby air supply alarm and the loudspeaker of the air output alarm face the same direction.
Preferably, in the uninterrupted air supply device, the number of warning columns contained in the warning components of the main air supply alarm, the standby air supply alarm and the air output alarm is unequal, the sliding rod is of a similar-mouth-shaped frame structure, and sliding ends of the sliding rod extend to two outer sides respectively to form sliding blocks which can extend into the sliding rail.
The invention at least comprises the following beneficial effects:
the method comprises the steps that firstly, the main air supply pressure gauge, the standby air supply pressure gauge and the air output pressure gauge are used for displaying the air pressure of a main air supply, the air pressure of a standby air supply and the air pressure of an air output pipeline respectively, the main air supply and the standby air supply are switched by one key through an air switching control display screen, and a remote alarm is used for carrying out close-range audible and visual alarm and remote communication alarm on the air pressure deviating from a safe range;
the second and standby power supplies can realize gas switching, online analysis and alarm under the condition of power on or power off; the main air supply source alarm, the standby air supply source alarm and the air output alarm can more intuitively alarm the air pipeline in the occurrence condition, so that a value administrator can directly acquire information in a long distance; the main air supply source alarm, the standby air supply source alarm and the air output alarm are provided with a plurality of trigger points, so that high-pressure or low-pressure alarm in multiple defense areas is realized, and uninterrupted output of air supply is ensured; the audible and visual alarm is easy to obtain materials and has good alarm effect; the connecting pressure and data of the 8mm copper tube have no error; the gas switching control display screen displays the lack of gas, so that a value administrator can more intuitively know the service condition of the gas source;
Thirdly, the arrangement of the alarm assembly facilitates the storage and use of the main air supply alarm, the standby air supply alarm and the air output alarm, when no alarm condition occurs, the main air supply alarm, the standby air supply alarm and the air output alarm are stored in the shell, the shell can be light and miniaturized and arranged in various narrow spaces, and when an alarm occurs, the main air supply alarm, the standby air supply alarm and the air output alarm extend out of the shell along the horizontal direction, so that the air pipeline which can intuitively display the occurrence condition is not occupied, and the air pipeline has the advantages of simple structure, convenient use and easy production;
fourth, the guide cylinder is rotatably installed in the shell through the bearing, the motor drives the guide cylinder to rotate, the guide cylinder is in threaded connection with the guide column, the L-shaped first positioning buckle is buckled with the L-shaped second positioning buckle, so that the guide column does linear reciprocating motion relative to the guide cylinder, the limiting position of motion is the threaded tail end of the internal thread and the external thread, the guide column stretches out of the shell, the warning column deflects towards the vertical direction under the elasticity of the pressure spring, the sliding rod slides in the storage groove, the motor drives the guide cylinder to rotate when alarming is needed, the guide column stretches out, the warning column is vertically arranged, the warning lamp flashes, the loudspeaker whistle has larger display area and better alarming effect compared with a simple audible-visual annunciator, when alarming is eliminated, the motor drives the guide cylinder to reversely rotate, the guide column is retracted, the warning column is propped against the shell, the pressure spring is compressed, the warning column is gradually stored in an annular space between the guide column and the guide cylinder, the guide column linearly moves to the limiting position, and the loudspeaker is stored in the guide cylinder, so that a shrinkage structure which does not occupy space is formed;
Fifthly, when the number of warning posts contained in the warning components of the main air supply source alarm, the standby air supply source alarm and the air output alarm is unequal, when a value administrator can remotely observe the number of warning posts to judge the air supply in a situation, the air supply is quickly sent to the site to treat emergency, time is saved in a production line, and risks are reduced; the structure of the sliding rod enables a pair of long sides to form a space for the warning lamp to pass through, so that the structure is simplified, and the practicability is enhanced.
The invention is suitable for automatic switching of oxygen, carbon dioxide, argon, nitrogen and other gases, and can switch low-pressure gas with the pressure of 0.2-1.0Mpa in 0.5-1 s. The air source is divided into two starting levels, the molecular sieve oxygenerator or the liquid oxygen storage tank is a main air supply source which is normally used in daily life, and the busbar is a standby air source for emergency use. According to the order of the levels, the main air supply source can not be influenced by the high and low pressure of the emergency standby air supply source as long as the pressure of the main air supply source reaches the set pressure of the main air supply source, and the main air supply source can be fully automatically and preferentially ensured to supply air. When the pressure of the main air supply source is lower than the set pressure point, the main air supply source can be automatically switched to an emergency standby air supply, and when the pressure of the main air supply source reaches the set pressure point again, the main air supply source can be immediately and automatically switched back to the main air supply source for normal daily use, so that uninterrupted air supply of an air consumption unit can be completely ensured.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural view of a gas supply control device according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a gas supply control device according to another embodiment of the present invention;
fig. 3 is a schematic structural view of a gas supply control device according to still another embodiment of the present invention;
fig. 4 is a schematic structural view of a gas supply control device according to still another embodiment of the present invention;
FIG. 5 is a schematic diagram of a gas supply monitoring alarm apparatus according to one embodiment of the invention;
FIG. 6 is a schematic view of a gas supply monitoring alarm apparatus according to another embodiment of the present invention;
FIG. 7 is an enlarged schematic view at A in FIG. 6;
FIG. 8 is an enlarged schematic view at B in FIG. 6;
FIG. 9 is a schematic side elevational view of the alarm assembly of the present invention;
fig. 10 is a schematic view of the structure of the uninterruptible air supply of the present invention.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
It should be noted that, in the description of the present invention, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
As shown in fig. 1 to 10, the present invention provides an uninterruptible gas supply apparatus including:
an air supply control device, comprising:
a first gas transmission main 100, one end of which is communicated with a main gas supply source, and the other end of which is communicated with a gas output pipeline 140 or a gas output port;
the first pneumatic valve 110 is disposed on the first gas transmission main pipe 100, the first pneumatic valve 110 is a normally closed valve, the starting pressure is P1-P2, P1 is a lower pressure limit, and P2 is an upper pressure limit. When the gas with the pressure of P1-P2 enters the pneumatic actuator of the first pneumatic valve 110, the first pneumatic valve 110 is opened, and when the gas with the pressure lower than P1 or no gas enters the pneumatic actuator of the first pneumatic valve 110, the pneumatic actuator is reset by the acting force of the spring, and the first pneumatic valve 110 is closed;
A second gas delivery main 120, one end of which is communicated with a standby gas source, and the other end of which is communicated with a gas output pipeline 140 or a gas output port;
the second pneumatic valve 130 is disposed on the second gas transmission main pipe 120, the second pneumatic valve 130 is a normally open valve, the starting pressure is P3-P4, P3 is a lower pressure limit, and P4 is an upper pressure limit. When the gas with the pressure of P3-P4 enters the pneumatic actuator of the second pneumatic valve 130, the second pneumatic valve 130 is closed, and when the gas with the pressure lower than P3 or no gas enters the pneumatic actuator of the second pneumatic valve 130, the pneumatic actuator is reset by the acting force of the spring, and the second pneumatic valve 130 is opened.
The normal pressure P of the main air supply source is located between P1-P2 and P3-P4, and the ranges of P1-P2 and P3-P4 can be the same or different, preferably the same, so that the switching states of the first pneumatic valve 110 and the second pneumatic valve 130 can be ensured to be opposite.
The main air supply source is a preferential air supply source of the air supply control device, such as a molecular sieve oxygen production or liquid oxygen storage tank, and the standby air supply source is a standby air supply source of the air supply control device, such as an oxygen bus bar and the like.
The air supply control device provided by the scheme, when in use, the standby air source is opened, the pressure of the standby air source is regulated to be P, the air of the main air supply source enters the first air supply main pipe 100 through one end of the first air supply main pipe 100, when the air pressure of the main air supply source is at the normal pressure P, the first air valve 110 is opened, the second air valve 130 is closed, the air is supplied through the main air supply source, when the air pressure of the main air supply source is reduced to be less than P1 or no air passes through, the first air valve 110 is closed, when the air pressure of the main air supply source is reduced to be less than P3 or no air passes through, the second air valve 130 is opened, and the air is supplied by the standby air source. When the gas pressure of the main gas supply source is restored to the normal pressure, the first pneumatic valve 110 is opened, the second pneumatic valve 130 is closed, and the gas is supplied through the main gas supply source, and the gas is supplied by the standby gas supply source in the opposite direction. The main air supply source for normal daily use and the standby air supply for emergency use are connected in series through the air supply control device. Therefore, the main air supply source and the standby air supply source are switched with each other in a short time in a full-automatic way, and the uninterrupted air utilization of an air utilization unit is completely ensured.
In another aspect, as shown in fig. 2, in the uninterruptible air supply device, the air supply control device further includes:
a controller;
the first electromagnetic valve 150 is arranged on the first gas transmission main pipe 100 and is positioned between the first pneumatic valve 110 and one end of the first gas transmission main pipe 100, and the first electromagnetic valve 150 is connected with the controller; the first solenoid valve 150 is a normally open valve.
An exhaust pipe 160, one end of which is communicated with a portion of the first gas transmission main pipe 100 located between the first air valve 110 and the first electromagnetic valve 150, and the other end of which is opened;
a second electromagnetic valve 170 provided on the exhaust pipe 160, the second electromagnetic valve 170 being connected to a controller; the second solenoid valve 170 is a normally closed valve.
The pressure detector is communicated with the main air supply source and connected with the controller and is used for detecting the pressure of the main air supply source end in real time, and the pressure detector can be a pressure gauge or a pressure sensor;
the actuators of the first pneumatic valve 110 and the second pneumatic valve 130 are respectively connected with one end of the exhaust pipe 160 (the actuators of the first pneumatic valve 110 and the second pneumatic valve 130 may be respectively connected with one end of the exhaust pipe 160 through connecting pipes to achieve one end of the exhaust pipe 160, or may be respectively connected with one end of the first electromagnetic valve 150 and one end of the exhaust pipe 160 on the first gas transmission main pipe 100 through connecting pipes to achieve one end of the exhaust pipe 160, or may take other real-time modes according to specific situations, as long as they can directly or indirectly communicate with the exhaust pipe 160), so that when the gas between the first electromagnetic valve 150 and the first pneumatic valve 110 on the first gas transmission main pipe 100 is released through the exhaust pipe 160, the gas in the pneumatic actuators of the first pneumatic valve 110 and the second pneumatic valve 130 is also released.
The air supply control device provided by the scheme is characterized in that when the air supply control device is used, a standby air source is opened, the pressure of the standby air source is regulated to be P, a pressure detector detects the pressure of a main air supply source in real time, pressure information of the main air supply source is transmitted to a controller, when the air pressure of the main air supply source is at normal pressure P, the controller controls the first electromagnetic valve 150 to be opened, the second electromagnetic valve 170 to be closed, air of the main air supply source enters the first air supply main pipe 100, the first air valve 110 is opened, the second air valve 130 is closed, air is supplied through the main air supply source, when the pressure of the main air supply source is reduced to be P5 (P5 is larger than P1 and P2 and is close to P), the pressure detector transmits the detected pressure of the main air supply source to the controller, the controller controls the first electromagnetic valve 150 to be closed, the second electromagnetic valve 170 is closed after a certain time is opened, air in the pneumatic executors of the first air supply main pipe 100 is exhausted through the exhaust pipe 160, no air passes through the first air valve 110, the second air supply valve 130 is opened, and the standby air supply source 130 is opened. When the gas pressure of the main gas supply source is restored to the normal pressure P, the pressure detector transmits the detected pressure of the main gas supply source to the controller, the controller controls the first electromagnetic valve 150 to open, the gas of the main gas supply source enters the first gas transmission main pipe 100, the first pneumatic valve 110 is opened, the second pneumatic valve 130 is closed, and the gas is supplied through the main gas supply source, and otherwise, the gas is supplied by the standby gas supply source.
In another aspect, in the uninterruptible air supply device, the air supply control device further includes:
the first stop valve 180 is disposed on the first gas transmission main pipe 100 and between the first pneumatic valve 110 and one end of the exhaust pipe 160, and is used for manually controlling the on-off of the main gas supply source, so as to facilitate the overhaul of the equipment generating the main gas supply source;
a second shut-off valve 190 is disposed on the second main gas line 120 between the second pneumatic valve 130 and one end of the second main gas line 120. The device is used for manually controlling the on-off of the standby air source, and is convenient for overhauling equipment for generating the standby air source.
In the air supply control device provided by the scheme, when the air supply control device is used, a standby air source is opened, the pressure of the standby air source is regulated to be P, then the second stop valve 190 is opened, then the first stop valve 180 is slowly opened, the pressure detector detects the pressure of the main air supply source in real time, the pressure information of the main air supply source is transmitted to the controller, when the air pressure of the main air supply source is at the normal pressure P, the controller controls the first electromagnetic valve 150 to be opened, the second electromagnetic valve 170 to be closed, the air of the main air supply source enters the first main air supply pipe 100, the first air valve 110 is opened, the second air valve 130 is closed, the air is supplied through the main air supply source, when the pressure of the main air supply source is reduced to be P5 (P5 is larger than P1 and P2 and is close to P), the pressure detector transmits the detected pressure of the main air supply source to the controller, the controller controls the first electromagnetic valve 150 to be closed, the second electromagnetic valve 170 is opened for a certain time, after the air in the pneumatic executor of the first air supply valve 110 and the second air supply valve 130 is discharged through the exhaust pipe 160, the first air supply valve 100 is closed, no air is supplied through the first air valve 110, and the second air valve 130 is opened, and the standby air supply valve 130 is opened. When the gas pressure of the main gas supply source is restored to the normal pressure P, the pressure detector transmits the detected pressure of the main gas supply source to the controller, the controller controls the first electromagnetic valve 150 to open, the gas of the main gas supply source enters the first gas transmission main pipe 100, the first pneumatic valve 110 is opened, the second pneumatic valve 130 is closed, and the gas is supplied through the main gas supply source, and otherwise, the gas is supplied by the standby gas supply source.
In another aspect, as shown in fig. 3, in the uninterruptible air supply device, the air supply control device further includes:
a first check valve 200 is provided on the first main gas transmission pipe 100 between the first shut-off valve 180 and the first air valve 110. Preventing reverse flow of gas to the primary gas supply.
In another aspect, in the uninterruptible air supply device, the air supply control device further includes:
a first ball valve 210 disposed on the first gas transmission main 100 and located between the first pneumatic valve 110 and the other end of the first gas transmission main 100;
a first gas delivery branch pipe 220, one end of which is communicated with a portion of the first gas delivery main 100 located between the first check valve 200 and the first stop valve 180, and the other end of which is communicated with a portion of the first gas delivery main 100 located between the first ball valve 210 and the other end of the first gas delivery main 100;
the third pneumatic valve 230 is disposed on the first gas delivery branch pipe 220, the actuator of the third pneumatic valve 230 is communicated with one end of the gas exhaust pipe 160, and the third pneumatic valve 230 is a normally closed valve; the third pneumatic valve 230 is a back-up pneumatic valve for the first pneumatic valve 110 and is identical to the first pneumatic valve 110.
A second check valve 240 provided on the first gas delivery branch pipe 220 and located between the third pneumatic valve 230 and one end of the first gas delivery branch pipe 220;
a second ball valve 250 disposed on the first gas-transmitting branch pipe 220 and located between the third pneumatic valve 230 and the other end of the first gas-transmitting branch pipe 220;
a second gas delivery branch pipe 260, one end of which is communicated with a portion of the first gas delivery main 100 located between the first stop valve 180 and the first check valve 200, and the other end of which is communicated with a portion of the first gas delivery branch pipe 220 located between the second ball valve 250 and the other end of the first gas delivery branch pipe 220;
a third shut-off valve 270 provided on the second gas delivery branch pipe 260;
wherein a portion of the first gas line 100 between the first pneumatic valve 110 and the first check valve 200 communicates with a portion of the first gas line branch 220 between the third pneumatic valve 230 and the second check valve 240.
In the air supply control device provided by the present embodiment, when in use, the third stop valve 270 is closed, the second ball valve 250 at the end of the third pneumatic valve 230 is closed, the first ball valve 210 is opened, the standby air source is opened, the pressure of the standby air source is adjusted to be P, then the second stop valve 190 is opened, then the first stop valve 180 is slowly opened, the pressure detector detects the pressure of the main air source in real time, and transmits the pressure information of the main air source to the controller, when the air pressure of the main air source is at the normal pressure P, the controller controls the first electromagnetic valve 150 to be opened, the second electromagnetic valve 170 to be closed, the air of the main air source enters the first main pipe 100, the first pneumatic valve 110 is opened, the second pneumatic valve 130 is closed, the air is supplied through the main air source, the air pressure of the air output end is P, when the pressure of the main air source is reduced to be P5 (P5 is greater than P1 and P2 and is close to P), the pressure detector transmits the detected pressure of the main air source to the controller, the controller controls the first electromagnetic valve 150 to be closed, the second electromagnetic valve 170 is opened for a certain time, the air is discharged from the second electromagnetic valve 170 through the second air outlet pipe 160 and the second pneumatic valve 110, the air output is opened, the air output from the first pneumatic valve 110 is closed, and the air output from the first pneumatic valve 130 is closed, and the air output from the first pneumatic valve 110 is opened, and the air output from the air output end is closed. When the gas pressure of the main gas supply source is restored to the normal pressure P, the pressure detector transmits the detected pressure of the main gas supply source to the controller, the controller controls the first electromagnetic valve 150 to open, the gas of the main gas supply source enters the first gas transmission main pipe 100, the first pneumatic valve 110 is opened, the second pneumatic valve 130 is closed, and the gas is supplied through the main gas supply source, and otherwise, the gas is supplied by the standby gas supply source.
When the first pneumatic valve 110 is damaged, the air supply control device closes the third stop valve 270, closes the first ball valve 210 at the end of the first pneumatic valve 110, opens the second ball valve 250 at the end of the third pneumatic valve 230, opens the standby air source, adjusts the pressure of the standby air source to P, opens the second stop valve 190, then slowly opens the first stop valve 180, the pressure detector detects the pressure of the main air source in real time and transmits the pressure information of the main air source to the controller, when the air pressure of the main air source is at the normal pressure P, the controller controls the first electromagnetic valve 150 to open, the second electromagnetic valve 170 to close, the air of the main air source enters the first main air pipe 100, the third pneumatic valve 230 to open, the second pneumatic valve 130 to close, the air is supplied through the main air source, and when the pressure of the main air source is reduced to P5 (P5 is larger than P1 and P2 and is close to P), the pressure detector transmits the detected pressure of the main air source to the controller, the controller controls the first electromagnetic valve 150 to open, the second electromagnetic valve 170 to open for a certain time, the air is discharged from the third pneumatic valve 230 through the third pneumatic valve 230 and the first pneumatic valve 130 to close, and the air supply air is not discharged from the first pneumatic valve 130 to the main air pipe 130. When the gas pressure of the main gas supply source is restored to the normal pressure P, the pressure detector transmits the detected pressure of the main gas supply source to the controller, the controller controls the first electromagnetic valve 150 to open, the gas of the main gas supply source enters the first gas transmission main pipe 100, the third pneumatic valve 230 is opened, the second pneumatic valve 130 is closed, and the gas is supplied through the main gas supply source, and otherwise, the gas is supplied by the standby gas supply source.
When the pneumatic valves are damaged and can not be maintained and replaced in time, the gas can not be automatically switched, the gas supply can be manually switched instead, the second stop valve 190, the first ball valve 210 and the second ball valve 250 are closed, the first stop valve 180 and the third stop valve 270 are opened, and the main gas supply source can be used for supplying the gas.
In another aspect, as shown in fig. 4, in the uninterruptible air supply device, the air supply control device further includes:
a third ball valve 280 disposed on the second gas transmission main 120 and located between the second pneumatic valve 130 and the other end of the second gas transmission main 120;
a third gas delivery branch pipe 290, one end of which is communicated with a portion of the second gas delivery main 120 located between the second stop valve 190 and the second pneumatic valve 130, and the other end of which is communicated with a portion of the first gas delivery main 100 located between the other end of the first gas delivery branch pipe 220 and the other end of the first gas delivery main 100;
a fourth pneumatic valve 300, which is disposed on the third gas delivery branch pipe 290, wherein an actuator of the fourth pneumatic valve 300 is communicated with one end of the exhaust pipe 160, and the fourth pneumatic valve 300 is a normally open valve; the fourth pneumatic valve 300 is a back-up pneumatic valve for the second pneumatic valve 130 and is identical to the second pneumatic valve 130.
A fourth ball valve 310 disposed on the third manifold 290 between the fourth pneumatic valve 300 and the other end of the third manifold 290;
a fourth gas delivery branch pipe 320 having one end connected to a portion of the second gas delivery main 120 located between the second stop valve 190 and one end of the third gas delivery branch pipe 290 and the other end connected to a portion of the first gas delivery main 100 located between the other end of the first gas delivery branch pipe 220 and the other end of the third gas delivery branch pipe 290;
a fourth shut-off valve 330 provided on the fourth gas delivery manifold 320.
In the air supply control device provided by the scheme, when in use, the third stop valve 270 and the fourth stop valve 330 are closed, the second ball valve 250 at the end of the third pneumatic valve 230 is closed, the fourth ball valve 310 at the end of the fourth pneumatic valve 300 is opened, the first ball valve 210 at the end of the first pneumatic valve 110 is opened, the third ball valve 280 at the end of the second pneumatic valve 130 is opened, the standby air source is opened, the pressure of the standby air source is regulated to be P, the second stop valve 190 is opened, then the first stop valve 180 is slowly opened, the pressure detector detects the pressure of the main air supply source in real time, the pressure information of the main air supply source is transmitted to the controller, when the air pressure of the main air supply source is at the normal pressure P, the controller controls the first electromagnetic valve 150 to be opened, the second electromagnetic valve 170 is closed, the gas of the main air supply source enters the first air supply main pipe 100, the first air valve 110 is opened, the second air valve 130 is closed, air is supplied through the main air supply source, when the pressure of the main air supply source is reduced to P5 (P5 is larger than P1 and P2 and is close to P), the pressure detector transmits the detected pressure of the main air supply source to the controller, the controller controls the first electromagnetic valve 150 to be closed, the second electromagnetic valve 170 is opened for a certain time, the air in the air actuators of the first air valve 110 and the second air valve 130 is discharged through the exhaust pipe 160 and then is closed, no air passes through the first air supply main pipe 100, the first air valve 110 is closed, the second air valve 130 is opened, and the air is supplied by the standby air source. When the gas pressure of the main gas supply source is restored to the normal pressure P, the pressure detector transmits the detected pressure of the main gas supply source to the controller, the controller controls the first electromagnetic valve 150 to open, the gas of the main gas supply source enters the first gas transmission main pipe 100, the first pneumatic valve 110 is opened, the second pneumatic valve 130 is closed, and the gas is supplied through the main gas supply source, and otherwise, the gas is supplied by the standby gas supply source.
When the first pneumatic valve 110 is damaged, the air supply control device closes the third stop valve 270 and the fourth stop valve 330, closes the first ball valve 210 at the end of the first pneumatic valve 110, opens the second ball valve 250 at the end of the third pneumatic valve 230, opens the third ball valve 280 at the end of the second pneumatic valve 130, opens the standby air source, adjusts the pressure of the standby air source to P, then opens the second stop valve 190, then slowly opens the first stop valve 180, the pressure detector detects the pressure of the main air source in real time, and transmits the pressure information of the main air source to the controller, when the air pressure of the main air source is at the normal pressure P, the controller controls the first electromagnetic valve 150 to be opened, the second electromagnetic valve 170 to be closed, the air of the main air source enters the first air supply main pipe 100, the third pneumatic valve 230 is opened, the second pneumatic valve 130 is closed, when the pressure of the main air source is reduced to P5 (P5 is greater than P1 and P2, and is close to P), the pressure detector transmits the detected pressure information of the main air source to the controller, when the air pressure of the main air source is reduced to P5, the first air source is not detected by the pressure detector, the first electromagnetic valve 150 is opened, the first electromagnetic valve 130 is closed, the first electromagnetic valve is opened, the second electromagnetic valve is closed, the first electromagnetic valve is closed, and the first electromagnetic valve is opened, the first electromagnetic valve is closed, and the second electromagnetic valve is closed, and the second electromagnetic valve 130 is closed. When the gas pressure of the main gas supply source is restored to the normal pressure P, the pressure detector transmits the detected pressure of the main gas supply source to the controller, the controller controls the first electromagnetic valve 150 to open, the gas of the main gas supply source enters the first gas transmission main pipe 100, the third pneumatic valve 230 is opened, the second pneumatic valve 130 is closed, and the gas is supplied through the main gas supply source, and otherwise, the gas is supplied by the standby gas supply source.
When the second pneumatic valve 130 is damaged, the air supply control device closes the third stop valve 270 and the fourth stop valve 330, closes the first ball valve 210 at the end of the first pneumatic valve 110, opens the second ball valve 250 at the end of the third pneumatic valve 230, opens the fourth ball valve 310 at the end of the fourth pneumatic valve 300, opens the standby air source, adjusts the pressure of the standby air source to P, opens the second stop valve 190, then slowly opens the first stop valve 180, the pressure detector detects the pressure of the main air source in real time, and transmits the pressure information of the main air source to the controller, when the air pressure of the main air source is at the normal pressure P, the controller controls the first electromagnetic valve 150 to be opened, the second electromagnetic valve 170 to be closed, the air of the main air source enters the first air supply main pipe 100, the third pneumatic valve 230 is opened, the fourth pneumatic valve 300 is closed, when the pressure of the main air source is reduced to P5 (P5 is greater than P1 and P2), and the pressure detector transmits the detected pressure information of the main air source to the controller when the pressure of the main air source is reduced to P5 (P5 is close P2), and the pressure information of the air source is not detected by the pressure detector, and the third pneumatic valve 300 is opened, the third pneumatic valve 300 is closed, and the first electromagnetic valve 150 is opened, the third pneumatic valve is opened, and the third pneumatic valve 300 is opened, and the third pneumatic valve is opened, and the fourth pneumatic valve is opened. When the gas pressure of the main gas supply source is restored to the normal pressure P, the pressure detector transmits the detected pressure of the main gas supply source to the controller, the controller controls the first solenoid valve 150 to open, the gas of the main gas supply source enters the first gas transmission main pipe 100, the third pneumatic valve 230 is opened, the fourth pneumatic valve 300 is closed, and the gas is supplied through the main gas supply source, and otherwise, the gas is supplied by the standby gas supply source.
When each pneumatic valve is damaged and can not be maintained and replaced in time, and the gas can not be automatically switched, the manual switching of gas supply can be changed, the first ball valve 210, the second ball valve 250, the third ball valve 280 and the fourth ball valve 310 are closed, the third stop valve 270 is opened, the fourth stop valve 330 is closed, the main gas supply source can be used for gas supply, or the fourth stop valve 330 is opened, the third stop valve 270 is closed, and the standby gas source can be used for gas supply.
In another aspect, in the uninterrupted air supply device, the pressure detector is a photoelectric pressure gauge, the detection limit of the photoelectric pressure gauge is 0.4-0.5MPa, and the starting pressures of the first pneumatic valve 110, the second pneumatic valve 130, the third pneumatic valve 230 and the fourth pneumatic valve 300 are all 0.2-1.0MPa.
In the air supply control device provided by the scheme, when in use, the third stop valve 270 and the fourth stop valve 330 are closed, the second ball valve 250 at the end of the third pneumatic valve 230 is closed, the fourth ball valve 310 at the end of the fourth pneumatic valve 300 is opened, the first ball valve 210 at the end of the first pneumatic valve is opened, the third ball valve 280 at the end of the second pneumatic valve 130 is opened, the standby air source is opened, the pressure of the standby air source is regulated to be 0.5MPa, the second stop valve 190 is opened, then the first stop valve 180 is slowly opened, the pressure detector detects the pressure of the main air source in real time, the pressure information of the main air source is transmitted to the controller, when the air pressure of the main air source is at the normal pressure of 0.5MPa, the controller controls the first electromagnetic valve 150 to be opened, the second electromagnetic valve 170 is closed, the gas of the main air supply source enters the first air supply main pipe 100, the first air valve 110 is opened, the second air valve 130 is closed, air is supplied through the main air supply source, the pressure of the air output end is 0.5MPa at the moment, when the pressure of the main air supply source is reduced to 0.4MPa, the pressure detector transmits the detected pressure of the main air supply source to the controller, the controller controls the first electromagnetic valve 150 to be closed, the second electromagnetic valve 170 is opened for 5 seconds, the air in the air actuators of the first air valve 110 and the second air valve 130 is discharged through the exhaust pipe 160 and then is closed, no air passes through the first air valve 110, the second air valve 130 is opened, the air is supplied by the standby air source, and the pressure of the air output end is 0.5MPa at the moment. When the gas pressure of the main gas supply source is restored to the normal pressure of 0.5MPa, the pressure detector transmits the detected pressure of the main gas supply source to the controller, the controller controls the first electromagnetic valve 150 to open, the gas of the main gas supply source enters the first gas transmission main pipe 100, the first pneumatic valve 110 is opened, the second pneumatic valve 130 is closed, and the gas is supplied through the main gas supply source, and otherwise, the gas is supplied by the standby gas supply source.
When the power is suddenly cut or the power is cut for a long time, the standby uninterruptible power supply cannot work due to other reasons, when the pressure of the main gas supply source is reduced to 0.2MPa, the gas output end is reduced to 0.2MPa, the pneumatic actuators of all pneumatic valves are not driven by gas, the pneumatic actuators are restored to normal state, the first pneumatic valve 110 is closed, the second pneumatic valve 130 is opened, the standby gas supply source gas is switched to be used, the switching process is completed within 0.5-1s, and the pressure of the gas output end is also increased to 0.5MPa (the same as the pressure of the standby gas supply source). The gas supply is not stopped as long as there is a reserve gas source.
The gas supply control device is suitable for automatic switching of gases such as oxygen, carbon dioxide, argon, nitrogen and the like, and can switch low-pressure gases with the pressure of 0.2-1.0 Mpa. The air source is divided into two starting levels, the molecular sieve oxygenerator or the liquid oxygen storage tank is a main air supply source which is normally used in daily life, and the busbar is a standby air source for emergency use. According to the order of the levels, the main air supply source can not be influenced by the high and low pressure of the emergency standby air supply source as long as the pressure of the main air supply source reaches the set pressure of the main air supply source, and the main air supply source can be fully automatically and preferentially ensured to supply air. When the pressure of the main air supply source used normally in the day is lower than the set pressure point, the main air supply source can be automatically switched to the emergency standby air supply source, and when the pressure of the main air supply source reaches the set pressure point again, the main air supply source used normally in the day is immediately and automatically switched back to the main air supply source used normally in the day. In order to realize all-weather uninterrupted constant pressure delivery of gas, the device is configured in the production and use of an uninterrupted gas supply full-automatic switching control device.
In another aspect, as shown in fig. 5 and 10, the uninterruptible air supply device further includes:
the gas supply monitoring alarm device, solid line in fig. 10 is a pressure gauge gas flow pipeline, and broken line is a standby gas source alarm 72 signal lead, which includes:
the shell 1, which can be a box body, a cylinder body and other structures, is provided with a space for accommodating a control box, a space for arranging a circuit and a space for embedding and installing the following elements;
the main air supply pressure gauge 21, the standby air supply pressure gauge 22 and the air output pressure gauge 23 are respectively arranged on the shell 1, can be arranged in a straight line and can be distributed at different positions, and can be conveniently displayed to a value manager, the main air supply pressure gauge 21 is communicated with the main air supply, is arranged on a main air supply pipeline, displays the pressure of the main air supply, and is a preferential air supply of the air supply control device 9, such as a molecular sieve oxygen production or liquid oxygen storage tank, the standby air supply pressure gauge 22 is communicated with the standby air supply, is arranged on a standby air supply pipeline, displays the pressure of the standby air supply, is a standby air supply of the air supply control device 9, such as an oxygen bus, and the like, and the related standby air is divided into the following components in the technical scheme: the standby high-pressure air source 1, the standby high-pressure air source 2 and low-pressure air supply (standby air source), the air output pressure gauge 23 is communicated with an air output pipeline, and the air output pipeline is used for outputting air (such as oxygen) to a hospital ward area like a hospital, so that the air pressure of the air output pipeline is displayed; the main air supply source, the standby air supply source and the air output are respectively supplied to 3 pressure gauges of the alarm device from pipelines of the main air supply source, the standby air supply source and the air output of the air supply control device 9, the pressures displayed by the main air supply source pressure gauge 21, the standby air supply source pressure gauge 22 and the air output pressure gauge 23 are identical to the pressures of the main air supply source, the standby air supply source and the air output of the air supply control device 9, and the air supply pressures are intuitively displayed;
The gas switching control display screen 3 is embedded on the shell 1, the gas switching control display screen 3 switches and displays the communication between a main gas supply source or a standby gas source and a gas output pipeline, the gas switching control display screen 3 can customize a display interface according to requirements, the control display screen of the gas supply control device 9 and the gas switching control display screen 3 of the alarm device are connected by a data line, the working states of the gas supply control devices 9 displayed by the two display screens are the same, so that the main gas supply source or the standby gas source can be used by the gas supply control devices 9 on the two display screens, misoperation of the prior art can not be caused, and the gas switching control display screen can be directly purchased for use, and the working states of the gas supply control devices 9 are not repeated;
the gas purity analysis display screen 4 is embedded on the shell 1, the gas purity of the gas output pipeline is detected and displayed on line by the gas purity analysis display screen 4, in essence, the analysis of the gas switching control display screen 3 is realized by a connected gas purity analyzer, the gas purity analyzer needs to be continuously supplied with gas, the used gas is connected from the gas output pipeline of the gas supply control device 9, the gas purity is used for real-time analysis, and the gas purity is used for 'analysis' and 'display' which are both in the prior art and can be purchased and used directly, and are not repeated herein;
The remote alarm 5 is installed on the shell 1, when any one of the pressure of the main air supply source, the standby air supply source or the gas output pipeline deviates from the threshold range representing safety, the remote alarm 5 alarms and automatically sends alarm signals and information to the terminal.
In the technical scheme, the pressure of each air source is observed to be in a normal range, then the power supply is switched on, the upper alarm limit and the lower alarm limit of each pressure gauge are set, the defense setting key of the alarm system is arranged, the device enters a working state, and the air source can be switched by clicking a one-key ventilation key on the air switching control screen. Normally, the air supply used must be the primary air supply, and the backup air supply can only be used temporarily. The gas purity analyzer detects the gas purity on line in real time, and the gas purity analysis display screen 4 displays the gas purity in real time, and when the gas quality is unqualified, the qualified gas can be switched to be used or other measures can be taken. The main air supply pressure gauge 21, the standby air supply pressure gauge 22 and the air output pressure gauge 23 are used for respectively displaying the air pressures of the main air supply, the standby air supply and the air output pipeline, the air switching control display screen 3 is used for carrying out one-key switching on the main air supply and the standby air supply, and the remote alarm 5 is used for carrying out close-range audible and visual alarm and remote communication alarm on the air pressure deviating from the safety range. When the gas quality of the used gas source is unqualified, the qualified gas source is switched on a screen in time, and a remote technician can remotely switch the main gas source or the standby gas source through a terminal (the prior art is omitted here) so as to grasp the use and storage conditions of each gas source in real time.
The gas supply monitoring and alarming device is matched with the gas supply control device 9 for use, can remotely switch the gas source (namely, can switch the main gas supply source or the standby gas source for use at any time), and can remotely alarm regardless of the gas shortage of the gas source.
In another technical scheme, the air supply monitoring alarm device further comprises:
a standby power supply 6, which is housed in the housing 1 and is usually placed in a control box, wherein the standby power supply 6 supplies power to the gas switching control display 3, the gas purity analysis display 4 and the remote alarm 5. The standby power supply 6 can realize gas switching, online analysis and alarm under the condition of power on or power off. The power supply of the device can be ensured during power failure, the one-key switching can be performed during power failure, the purity of the gas can be analyzed and detected, and an alarm can be sent. When the emergency power supply is in power failure or in power failure for a long time, the standby uninterruptible power supply of the control box continues to work (1-12 hours), and when the pressure of each air source is reduced to the lower limit of the set pressure or is increased to the upper limit of the set pressure, the alarm device can still send out audible and visual alarm or telephone to inform a manager to eliminate faults because one uninterruptible power supply is in power supply.
In another technical scheme, the air supply monitoring alarm device further comprises:
The main air supply alarm 71, the standby air supply alarm 72 and the air output alarm 73 are respectively arranged on the shell 1, can be arranged in a straight line or distributed at different positions, and can be conveniently displayed to a manager of the current value, the main air supply alarm 71, the standby air supply alarm 72 and the air output alarm 73 are respectively electrically connected with the main air supply pressure gauge 21, the standby air supply pressure gauge 22 and the air output pressure gauge 23, and when any one of the pressure of the main air supply, the standby air supply or the air output pipeline deviates from a threshold range representing safety, the main air supply alarm 71, the standby air supply alarm 72 or the air output alarm 73 alarms. Multiple alarming, audible and visual alarming and cycling mobile phone alarming, and timely elimination of faults is ensured. The main air supply source alarm 71, the standby air supply source alarm 72 and the air output alarm 73 can more intuitively alarm the air pipeline in the occurrence condition, so that the value administrator can directly acquire information in a long distance (without approaching).
In another technical scheme, the air supply monitoring alarm device is characterized in that a plurality of trigger points are arranged on a main air supply alarm 71, a standby air supply alarm 72 and an air output alarm 73, so that high-voltage or low-voltage alarm in multiple defense areas is realized, and uninterrupted output is ensured;
The main air supply source alarm 71 is provided with: the main air supply alarm 71 alarms when the main air supply pressure is below a preset lower threshold;
the backup air source is a busbar formed by a backup first high-pressure air source, a backup second high-pressure air source and a backup low-pressure air source, and the backup air source alarm 72 is set as follows: the standby air source alarm 72 alarms when any of the pressure of the first high-pressure air source, the second high-pressure air source or the standby low-pressure air source is lower than a preset lower limit threshold value or the pressure of the standby low-pressure air source is higher than a preset upper limit threshold value;
the gas output alarm 73 is provided with: the gas output alarm 73 alarms when the gas output line pressure is below a preset lower threshold or above a preset upper threshold.
(1) The alarm signal of the 1 defending area (main air supply source) is triggered by the lower limit of a main air supply source pressure gauge 21 displaying the main air supply source, when the pressure of the main air supply source is insufficient and is lower than the set lower limit, the air switching control display screen 3 displays that the main air supply source lacks air, the main air supply source alarm 71 and the remote alarm send out audible and visual alarm signals, and the remote alarm dials the set telephone number of a first manager; if no person answers, continuing to pull out the telephone of the second set manager; if no answer is made, continuing to pull out the call of the third set manager; until someone is dealing with the fault and the alarm is released.
(2) The alarm signal of the 2 defending area (standby air source) has 4 trigger points, a shows the lower limit of the standby air source pressure gauge 22 of the standby air source, b shows the upper limit of the standby air source pressure gauge 22 of the standby air source, c shows the lower limit of the photoelectric pressure gauge of the standby high-pressure air source 1, d shows the lower limit of the photoelectric pressure gauge of the standby high-pressure air source 2. When the pressure of the standby high-pressure air source 1 is lower than the lower limit, the air switching control display screen 3 displays that the standby high-pressure air source 1 is out of air, the standby air source alarm 72 and the remote alarm send out audible and visual alarm signals, or when the pressure of the standby high-pressure air source 2 is lower than the lower limit, the air switching control display screen 3 displays that the standby high-pressure air source 2 is out of air, the standby air source alarm 72 and the remote alarm send out audible and visual alarm signals, or further, when the pressure of the standby low-pressure air source is lower than the lower limit or higher than the upper limit, the air switching control display screen 3 displays that the standby low-pressure air source is out of air, the standby air source alarm 72 and the remote alarm send out audible and visual alarm signals, and the remote alarm dials the telephone number of a set first manager; if no person answers, continuing to pull out the telephone of the second set manager; if no answer is made, continuing to pull out the call of the third set manager; until someone is dealing with the fault and the alarm is released.
(3) The alarm of the 3 defending area (gas output) has 2 trigger points, and the upper limit and the lower limit of the gas output pressure gauge 23 for displaying the gas output are displayed. When the gas output pressure is insufficient and the pressure is lower than the set lower limit or higher than the upper limit, the gas switching control display screen 3 displays that the gas output pipeline is in short supply, the gas output alarm 73 and the remote alarm send out audible and visual alarm signals, and the remote alarm dials the set telephone number of the first manager; if no person answers, continuing to pull out the telephone of the second set manager; if no answer is made, continuing to pull out the call of the third set manager; until someone is dealing with the fault and the alarm is released.
In another technical scheme, the air supply monitoring alarm device comprises a main air supply source alarm 71, a standby air supply source alarm 72 and an air output alarm 73 which are all audible and visual alarms. The audible and visual alarm is easy to obtain materials and has good alarm effect.
In another technical scheme, the gas supply monitoring alarm device, the main gas supply pressure gauge 21 is communicated with the main gas supply through a copper pipe with the outer diameter of 8mm, the standby gas supply pressure gauge 22 is communicated with the standby gas supply through a copper pipe with the outer diameter of 8mm, and the gas output pressure gauge 23 is communicated with the gas output pipeline through a copper pipe with the outer diameter of 8 mm. The pressure and data were error free.
In another technical scheme, the gas supply monitoring alarm device displays the gas shortage by the gas switching control display screen 3 when any one of the pressure of the main gas supply source, the standby gas supply source or the gas output pipeline is lower than a preset lower limit threshold value. The gas switching control display screen 3 displays the gas shortage, so that a value administrator can more intuitively know the gas source service condition.
In another technical solution, as shown in fig. 6, 7, 8 and 9, the main air supply alarm 71, the standby air supply alarm 72 and the air output alarm 73 are all installed on the casing 1 in the form of alarm components, and for the sake of sequence number arrangement, the alarm components are renumbered, and in essence, each component of the main air supply alarm 71, the standby air supply alarm 72 and the air output alarm 73 corresponds to each component in a one-to-one manner, and the alarm components include:
the guide cylinder 81 is horizontally arranged on the axis, the guide cylinder 81 is rotatably embedded and installed on the shell 1 through a bearing, one end of the guide cylinder 81 is fixedly connected with an output shaft of the motor 811, the other end of the guide cylinder is flush with the outer surface of the shell 1, an internal thread is arranged on the inner wall of the guide cylinder 81 close to the motor 811, a pair of first positioning buckles 812 are symmetrically arranged on the inner wall of the guide cylinder 81, and the first positioning buckles 812 are arranged along the length direction of the guide cylinder 81 and have an L-shaped vertical section;
The guide post 82 is horizontally arranged on the axis, the length of the guide post 82 is not greater than that of the guide cylinder 81, an external thread matched with the internal thread is arranged on the outer wall of the guide post 82, a pair of second positioning buckles 825 are further arranged on the outer wall of the guide post 82, the second positioning buckles 825 are arranged along the length direction of the guide post 82, the vertical section is L-shaped, the pair of first positioning buckles 812 limit the rotation of the pair of second positioning buckles 825, and a loudspeaker 821 is arranged on the outward end face of the guide post 82; the outer wall of the guide post 82 is further provided with at least one group of containing grooves 823 and damping grooves 824 in sequence along the length direction, and two side walls opposite to the containing grooves 823 are provided with sliding rails;
at least one warning post 83, the end of the warning post 83 is hinged on the guide post 82, and the position of the hinge point is set as follows: when the guide post 82 rotates relative to the guide cylinder 81 to a limit distance, the warning post 83 completely extends out of the guide cylinder 81, the warning post 83 is connected with one end of the storage groove 823, which is far away from the loudspeaker 821, through a pressure spring 834, a sliding rod 831 is hinged on the warning post 83, the free end of the sliding rod 831 slides in the sliding rail, a plurality of warning lamps 832 and damping blocks 833 are arranged on the warning post 83 in a straight line along the length direction of the sliding rod 831, when the free end of the sliding rod 831 slides to one end of the storage groove 823, which is far away from the loudspeaker 821, the warning post 83 is vertically arranged, the warning lamps 832 and the loudspeaker 821 face the same direction, when the free end of the sliding rod 831 slides to the other end of the storage groove 823, which is close to the loudspeaker 821, the damping blocks 833 are stored in the damping grooves 824, the warning lamps 832 are stored in the storage groove 823 and do not touch the bottom, the warning post 83 is parallel to the guide post 82, and the warning post 83 is horizontally arranged at one end of the storage groove 823, which is far away from the loudspeaker 821, and the projection post 82 is located in the radial direction of the guide post 81;
The main air supply pressure gauge 21, the standby air supply pressure gauge 22, the air output pressure gauge 23, the loudspeaker 821 of the main air supply alarm 71, the loudspeaker 821 of the standby air supply alarm 72 and the loudspeaker 821 of the air output alarm 73 face the same direction.
The guide cylinder 81 is rotatably installed in the shell 1 through a bearing, the motor 811 drives the guide cylinder 81 to rotate, the guide cylinder 81 is in threaded connection with the guide column 82, the L-shaped first positioning buckle 812 is buckled with the L-shaped second positioning buckle 825, the guide column 82 linearly reciprocates relative to the guide cylinder 81, the limiting position of movement is the threaded tail ends of the internal threads and the external threads, the guide column 82 stretches out of the shell 1, the warning column 83 deflects towards the vertical direction under the elasticity of the pressure spring 834, the sliding rod 831 slides in the accommodating groove 823, when an alarm is needed, the motor 811 drives the guide cylinder 81 to rotate, the guide column 82 stretches out, the warning column 83 is vertically arranged, the warning lamp 832 flashes, the loudspeaker 821 whistle, the guide cylinder 81 is driven to reversely rotate relative to a simple audible-visual alarm, the warning column 83 is propped against the shell 1, the warning column 83 is compressed, the warning column 83 is gradually accommodated in an annular space between the guide column 82 and the guide cylinder 81, the guide column 82 linearly moves to the limiting position, and the loudspeaker is accommodated in the compression spring 821, and the structure does not occupy the space of the guide cylinder 821 is formed.
In another technical scheme, the air supply monitoring alarm device comprises alarm assemblies of a main air supply alarm 71, a standby air supply alarm 72 and an air output alarm 73, wherein the alarm assemblies comprise unequal numbers of alarm posts 83, for example, 1 alarm post 83, ten alarm posts 83 and three alarm posts 83 similar to Benz trademarks can be displayed respectively, when an administrator can observe the number of the alarm posts 83 remotely to judge the air supply in a situation, then the air supply can be rapidly sent to the site to treat emergency, time is saved in the production line, and risks are reduced.
In another technical scheme, the air supply monitoring alarm device is characterized in that the sliding rod 831 is of a similar-mouth-shaped frame structure, and sliding ends of the sliding rod 831 extend to two outer sides respectively to form sliding blocks which can extend into the sliding rails. The structure of the sliding rod 831 enables a pair of long sides to form a space for the warning lamp 832 to pass through, simplifying the structure and enhancing the practicability.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.

Claims (6)

1. Uninterrupted gas supply device, its characterized in that includes:
an air supply control device, comprising:
one end of the first gas transmission main pipe is communicated with a main gas supply source, and the other end of the first gas transmission main pipe is communicated with a gas output pipeline or a gas output port; the normal pressure P of the main air supply source is positioned between P1-P2 and P3-P4;
the first pneumatic valve is arranged on the first gas transmission main pipe, is a normally closed valve, and has starting pressure of P1-P2; the actuator of the first pneumatic valve is communicated with one end of the exhaust pipe;
one end of the second gas transmission main pipe is communicated with the standby gas source, and the other end of the second gas transmission main pipe is communicated with the gas output pipeline or the gas output port;
the second pneumatic valve is arranged on the second gas transmission main pipe, is a normally open valve, and has starting pressures of P3-P4, P1-P2 and P3-P4 in the same range so as to ensure that the switching states of the first pneumatic valve and the second pneumatic valve are opposite; the actuator of the second pneumatic valve is communicated with one end of the exhaust pipe;
a controller;
the first electromagnetic valve is arranged on the first gas transmission main pipe and is positioned between the first pneumatic valve and one end of the first gas transmission main pipe, and the first electromagnetic valve is connected with the controller;
One end of the exhaust pipe is communicated with a part of the first gas transmission main pipe, which is positioned between the first pneumatic valve and the first electromagnetic valve, and the other end of the exhaust pipe is open;
the second electromagnetic valve is arranged on the exhaust pipe and is connected with the controller;
the pressure detector is communicated with the main air supply source and is connected with the controller;
the first stop valve is arranged on the first gas transmission main pipe and is positioned between the first pneumatic valve and one end of the exhaust pipe;
the second stop valve is arranged on the second gas transmission main pipe and is positioned between the second pneumatic valve and one end of the second gas transmission main pipe;
the first check valve is arranged on the first gas transmission main pipe and is positioned between the first stop valve and the first pneumatic valve;
the first ball valve is arranged on the first gas transmission main pipe and is positioned between the first pneumatic valve and the other end of the first gas transmission main pipe;
one end of the first gas transmission branch pipe is communicated with a part of the first gas transmission main pipe, which is positioned between the first check valve and the first stop valve, and the other end of the first gas transmission branch pipe is communicated with a part of the first gas transmission main pipe, which is positioned between the first ball valve and the other end of the first gas transmission main pipe;
The third pneumatic valve is arranged on the first gas transmission branch pipe, an actuator of the third pneumatic valve is communicated with one end of the exhaust pipe, and the third pneumatic valve is a normally closed valve;
a second check valve disposed on the first gas delivery manifold and located between the third pneumatic valve and one end of the first gas delivery manifold;
the second ball valve is arranged on the first gas transmission branch pipe and is positioned between the third pneumatic valve and the other end of the first gas transmission branch pipe;
one end of the second gas transmission branch pipe is communicated with a part of the first gas transmission main pipe, which is positioned between the first stop valve and the first check valve, and the other end of the second gas transmission branch pipe is communicated with a part of the first gas transmission branch pipe, which is positioned between the second ball valve and the other end of the first gas transmission branch pipe;
a third cutoff valve provided on the second gas delivery branch pipe; wherein, the part of the first gas transmission main pipe which is positioned between the first pneumatic valve and the first check valve is communicated with the part of the first gas transmission branch pipe which is positioned between the third pneumatic valve and the second check valve.
2. The uninterruptible gas supply of claim 1, wherein the gas supply control means further comprises:
the third ball valve is arranged on the second gas transmission main pipe and is positioned between the second pneumatic valve and the other end of the second gas transmission main pipe;
One end of the third gas transmission branch pipe is communicated with a part of the second gas transmission main pipe, which is positioned between the second stop valve and the second pneumatic valve, and the other end of the third gas transmission branch pipe is communicated with a part of the first gas transmission main pipe, which is positioned between the other end of the first gas transmission branch pipe and the other end of the first gas transmission main pipe;
the fourth pneumatic valve is arranged on the third gas transmission branch pipe, an actuator of the fourth pneumatic valve is communicated with one end of the exhaust pipe, and the fourth pneumatic valve is a normally open valve;
the fourth ball valve is arranged on the third gas transmission branch pipe and is positioned between the fourth pneumatic valve and the other end of the third gas transmission branch pipe;
one end of the fourth gas transmission branch pipe is communicated with a part of the second gas transmission main pipe, which is positioned between the second stop valve and one end of the third gas transmission branch pipe, and the other end of the fourth gas transmission branch pipe is communicated with a part of the first gas transmission main pipe, which is positioned between the other end of the first gas transmission branch pipe and the other end of the third gas transmission branch pipe;
and the fourth stop valve is arranged on the fourth gas transmission branch pipe.
3. The uninterruptible gas supply of claim 2, wherein the pressure detector is a photoelectric pressure gauge having a detection limit of 0.4 to 0.5MPa, and the activation pressures of the first pneumatic valve, the second pneumatic valve, the third pneumatic valve, and the fourth pneumatic valve are all 0.2 to 1.0MPa.
4. The uninterruptible gas supply of claim 1, further comprising:
air feed monitoring alarm device, it includes:
a housing;
the main air supply pressure gauge is communicated with the main air supply and displays the pressure of the main air supply, the standby air supply pressure gauge is communicated with the standby air supply and displays the pressure of the standby air supply, and the gas output pressure gauge is communicated with the gas output pipeline and displays the gas pressure of the gas output pipeline;
the gas switching control display screen is embedded on the shell and is used for switching and displaying the communication between the main gas supply source or the standby gas supply source and the gas output pipeline;
the gas purity analysis display screen is embedded on the shell and is used for detecting and displaying the gas purity of the gas output pipeline;
the remote alarm is arranged on the shell, and is used for alarming when any one of the pressure of the main air supply source, the standby air supply source or the air output pipeline deviates from a threshold range representing safety, and automatically sending alarm signals and information to the terminal;
The standby power supply is accommodated in the shell and supplies power to the gas switching control display screen, the gas purity analysis display screen and the remote alarm;
the main air supply alarm, the standby air supply alarm and the gas output alarm are respectively arranged on the shell, and are respectively electrically connected with the main air supply pressure gauge, the standby air supply pressure gauge and the gas output pressure gauge;
wherein, main air supply source alarm sets up to: when the pressure of the main air supply source is lower than a preset lower limit threshold value, the main air supply source alarm gives an alarm;
the standby air source is a busbar formed by a standby first high-pressure air source, a standby second high-pressure air source and a standby low-pressure air source, and the standby air source alarm is set as follows: when the pressure of any one of the first high-pressure air source, the second high-pressure air source or the standby low-pressure air source is lower than a preset lower limit threshold value or the pressure of the standby low-pressure air source is higher than a preset upper limit threshold value, the standby air source alarm alarms;
The gas output alarm is set as follows: and when the pressure of the gas output pipeline is lower than a preset lower limit threshold value or higher than a preset upper limit threshold value, the gas output alarm alarms.
5. The uninterruptible gas supply of claim 4, wherein the primary gas supply alarm, the backup gas supply alarm, and the gas output alarm are each mounted to the housing in the form of an alarm assembly comprising:
the guide cylinder is horizontally arranged on the axis, the guide cylinder is rotatably embedded and installed on the shell through a bearing, one end of the guide cylinder is fixedly connected with an output shaft of the motor, the other end of the guide cylinder is flush with the outer surface of the shell, the inner wall of the guide cylinder, which is close to the motor, is provided with internal threads, the inner wall of the guide cylinder is symmetrically provided with a pair of first positioning buckles, and the first positioning buckles are arranged along the length direction of the guide cylinder and have L-shaped vertical sections;
the guide column is horizontally arranged on the axis, the length of the guide column is not greater than that of the guide cylinder, an external thread matched with the internal thread is arranged on the outer wall of the guide column, a pair of second locating buckles are further arranged on the outer wall of the guide column, the second locating buckles are arranged along the length direction of the guide column, the vertical section is L-shaped, the pair of first locating buckles limit the pair of second locating buckles to rotate, and a loudspeaker is arranged on the outward end face of the guide column; the outer wall of the guide post is also provided with at least one group of storage grooves and damping grooves in sequence along the length direction of the guide post, and two opposite side walls of the storage grooves are provided with sliding rails;
At least one warning post, the tip of warning post articulates on the guide post, and the position of pin joint sets up to: when the guide post rotates to a limit far away from the guide barrel, the warning post fully extends out of the guide barrel, one end, far away from the loudspeaker, of the storage groove is connected with the warning post through a pressure spring, a sliding rod is hinged to the warning post, the free end of the sliding rod slides in the sliding rail, a plurality of warning lamps and damping blocks are further arranged on the warning post in a line shape along the length direction of the warning post, when the free end of the sliding rod slides to one end, far away from the loudspeaker, of the storage groove, the warning post is vertically arranged, the warning lamps and the loudspeaker face the same direction, when the free end of the sliding rod slides to the other end, close to the loudspeaker, of the storage groove, the damping blocks are stored in the damping grooves, the warning lamps are stored in the storage groove and do not touch the bottom, the warning post is horizontally arranged parallel to the guide post, and the radial projection of the warning post is positioned in an annular gap between the guide post and the guide barrel;
the main air supply pressure gauge, the standby air supply pressure gauge, the air output pressure gauge, the loudspeaker of the main air supply alarm, the loudspeaker of the standby air supply alarm and the loudspeaker of the air output alarm face the same direction.
6. The uninterruptible gas supply of claim 5, wherein the alarm assemblies of the main gas supply alarm, the standby gas supply alarm and the gas output alarm comprise unequal numbers of alarm posts, the sliding rod is of a similar-mouth-shaped frame structure, and sliding ends of the sliding rod extend to two outer sides respectively to form sliding blocks which can extend into the sliding rail.
CN201810879148.5A 2018-08-03 2018-08-03 Uninterrupted air supply device Active CN108730762B (en)

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US11596759B2 (en) * 2018-12-12 2023-03-07 General Electric Company Methods and systems for a medical gas delivery module
CN112212209A (en) * 2019-07-09 2021-01-12 合肥晶合集成电路股份有限公司 Gas supply device
CN111059466A (en) * 2019-11-29 2020-04-24 青岛歌尔智能传感器有限公司 Nitrogen gas supply device, plasma cleaning system and nitrogen gas supply method
CN110925598B (en) * 2019-12-11 2020-10-09 广州广钢气体能源股份有限公司 Switching system and switching method for electronic gas valve
CN114963003A (en) * 2021-02-19 2022-08-30 中国科学院微电子研究所 Gas supply system and gas supply method for semiconductor manufacturing

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Address after: 537500 Shaling team, Dongguang village, Rongzhou Town, Rong County, Yulin City, Guangxi Zhuang Autonomous Region

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