Carbon dioxide gas cylinder concentration automatic alarm system for carbon dioxide incubator

Abstract

The utility model discloses a carbon dioxide gas cylinder concentration automatic alarm system for a carbon dioxide incubator, which comprises two gas supply pipelines, each gas supply pipeline comprises a gas cylinder and a pressure reducing valve arranged at a gas outlet of the gas cylinder, the pressure reducing valve is provided with two electronic meters for displaying the pressure of a gas inlet and the pressure of the gas outlet, and the gas supply pipelines are communicated with the gas cylinder. The two air supply pipelines are connected with the electromagnetic three-way valve in parallel, the electromagnetic three-way valve is connected with the carbon dioxide incubator, the electronic meters of the air supply pipelines are electrically connected with the external control assembly, the control assembly is electrically connected with the alarm assembly and the electromagnetic three-way valve, and one air supply pipeline and one standby air supply pipeline are formed through parallel circuits. When the electronic meter of the pressure reducing valve detects that the air pressure is smaller than a set value, the standby circuit is switched to be used, the alarm assembly is started to conduct ventilation warning, and a detector can replace the air cylinder under the condition that continuous supply is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to carbon dioxide incubator equipment technical field, especially be used for carbon dioxide incubator's carbon dioxide gas cylinder concentration automatic alarm system. BACKGROUND

[0002] The existing carbon dioxide incubator such as patent number ZL201120215399.7 "a carbon dioxide incubator" shows, usually for gas cylinder is connected with incubator through pressure reducing valve, but when gas cylinder is out of gas, the problem of supply interruption will appear, therefore patent number ZL201921759867.X "a carbon dioxide incubator gas source automatic switching device", through a large number of parallel lines, electric control valve and flowmeter are switched automatically, still have the following problems:

[0003] 1. Line is complex, and is connected with a large number of lines, instruments and sensing equipment, there is inconvenient to use in smaller laboratory implementation, and there is certain security risk;

[0004] 2. Device switching needs additional instrument to monitor, but the existing patent ZL201720404057.7 "a novel pressure reducing valve", has used electronic barometer on pressure reducing valve, so the real-time data of pressure reducing valve can be directly imported control assembly through electronic watch, can further simplify on the basis of above-mentioned pipeline, facilitate the implementation of automatic control, further guarantee security and degree of arrangement conciseness;

[0005] 3. Device lacks alarm device, although supply interruption and automatic control switching are basically ensured through pipeline, but the gas cylinder of switching still needs to be replaced in time under the condition of uninterrupted supply, and accurately informs detection personnel. INVENTION CONTENTS

[0006] The utility model provides carbon dioxide gas cylinder concentration automatic alarm system for carbon dioxide incubator, aims at solving the above-mentioned carbon dioxide gas source of existing carbon dioxide incubator guarantee self -controlling and uninterrupted supply, while line arrangement is complex, there is certain security risk, also inconvenient in laboratory implementation, lacks alarm device and accurately replaces the problem of bottle of informing detection personnel.

[0007] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0008] The utility model provides a carbon dioxide gas cylinder concentration automatic alarm system for carbon dioxide incubator, including gas supply pipeline, the gas supply pipeline includes gas cylinder and installs the pressure reducing valve in the gas cylinder gas outlet, is equipped with two electronic tables of display inlet pressure and outlet pressure on the pressure reducing valve, the gas supply pipeline has two roads, and two road gas supply pipelines are connected with electromagnetic three -way valve in parallel, and the electromagnetic three -way valve is connected with carbon dioxide incubator, and the electronic tables of gas supply pipeline are electrically connected with the control assembly of external connection, and the control assembly is electrically connected with alarm assembly and electromagnetic three -way valve.

[0009] As preferably, the electronic table of the pressure reducing valve of the gas supply pipeline is linked with the alarm assembly and the electromagnetic three -way valve through the control assembly.

[0010] As more preferably, the alarm assembly has two, and the alarm assembly corresponds to the gas supply pipeline one -to -one.

[0011] Further, the control assembly includes PLC controller.

[0012] Further, the alarm assembly includes audible -visual alarm.

[0013] Specifically, the gas cylinder is arranged in the placing cabinet, and the gas cylinder is arranged side by side.

[0014] More specifically, one side of the placing cabinet is provided with PLC controller.

[0015] In detail, the top of the placing cabinet is respectively provided with two audible -visual alarms, and the audible -visual alarm is located directly above the corresponding gas cylinder.

[0016] The utility model has the advantages of:

[0017] 1. The utility model utilizes parallel gas supply pipeline to form one use and one spare, when one side gas pressure is insufficient and is determined to need to be replaced, can switch to another road intercommunication through electromagnetic three -way valve, guarantees uninterrupted supply, automatic switching;

[0018] 2. The utility model directly controls through the electronic table of pressure reducing valve as signal, specifically is the pressure of pressure reducing valve inlet, judges the gas in bottle how much through the pressure before not reducing, and switches in time through control assembly, greatly simplifies the circuit, even in smaller laboratory can be very convenient to arrange, improves the security of laboratory use;

[0019] 3. The utility model passes through corresponding alarm assembly, after receiving replacement signal, control assembly will start the alarm assembly of corresponding gas supply pipeline, and warning, and the staff can accurately know which gas cylinder needs to be replaced and replace. DRAWINGS

[0020] Figure 1The system connection schematic diagram of the utility model;

[0021] Figure 2 The arrangement schematic diagram of the utility model;

[0022] In the figure: 1, gas supply pipeline; 11, gas cylinder; 12, pressure reducing valve; 13, electronic watch;

[0023] 2, control assembly; 21, PLC controller;

[0024] 3, alarm assembly; 31, audible and visual alarm;

[0025] 4, electromagnetic three-way valve; 5, placing cabinet. DETAILED DESCRIPTION

[0026] As follows, further describe the embodiment with reference to the drawings.

[0027] As Figure 1 Shown, as a preferred embodiment 1, for carbon dioxide incubator carbon dioxide gas cylinder concentration automatic alarm system, including gas supply pipeline 1, the gas supply pipeline 1 includes gas cylinder 11 and installs in the gas cylinder 11 gas outlet pressure reducing valve 12, pressure reducing valve 12 is equipped with two electronic watch 13 of display inlet pressure and outlet pressure, the gas supply pipeline 1 has two roads, and two road gas supply pipeline 1 is connected with electromagnetic three-way valve 4 in parallel, electromagnetic three-way valve 4 is connected with carbon dioxide incubator, the electronic watch 13 of gas supply pipeline 1 is electrically connected with external control assembly 2, control assembly 2 and alarm assembly 3 and electromagnetic three-way valve 4 electrically connected.

[0028] The electronic watch 13 of the gas supply pipeline 1 pressure reducing valve 12 inlet pressure detection place is linked through control assembly 2 and alarm assembly 3 and electromagnetic three-way valve 4.

[0029] The alarm assembly 3 has two, and the alarm assembly 3 corresponds to the gas supply pipeline 1 one by one.

[0030] Parallel gas supply pipeline 1 forms a spare, and the two roads are named A and B, initially, through electromagnetic three-way valve 4 control A communication, B disconnects standby, control assembly 2 continuously obtains the reading of the electronic watch 13 of pressure reducing valve 12 on A, when the reading of the inlet pressure of pressure reducing valve 12 on A is less than the set value, judge as needing to switch, at this time, control assembly 2 switches to B communication through electromagnetic three-way valve 4, A disconnects standby, and opens A corresponding alarm assembly 3 and warns, prompt to replace the gas cylinder, the detection personnel replaces the bottle alone under the condition of continuous supply, until the gas pressure reading recovers after replacing the bottle, control assembly 2 closes A corresponding alarm assembly 3, A enters standby and waits for the next switching.

[0031] As preferably, the control assembly 2 comprises a PLC controller 21. Such as GCAN-PLC series programmable logic controller PLC.

[0032] As preferably, the alarm assembly 3 comprises an audible and light alarm 31. Such as BJ-DC24V model explosion-proof audible and light alarm.

[0033] As shown in Figure 2 As a more preferred embodiment 2, the gas cylinder 11 is arranged in the placing cabinet 5, and the gas cylinder 11 is arranged side by side. It is convenient to replace the gas cylinder 11.

[0034] One side of the placing cabinet 5 is provided with a PLC controller 21. It ensures the automatic operation.

[0035] The top of the placing cabinet 5 is respectively provided with two audible and light alarms 31, and the audible and light alarm 31 is located directly above the corresponding gas cylinder 11. It is convenient to quickly identify the gas cylinder 11 that needs to be replaced, and it is convenient to use.

[0036] As a more preferred embodiment 3, a one-way valve can be added between the outlet of the pressure reducing valve 12 and the electromagnetic three-way valve 4, which further ensures the safety of the laboratory.

[0037] The working principle of the utility model:

[0038] The utility model utilizes the parallel gas supply pipeline 1 to form one use and one backup. When one side gas pressure is insufficient and needs to be replaced, the electromagnetic three-way valve 4 can be switched to another road communication, ensuring continuous supply and automatic switching.

[0039] The utility model directly controls through the electronic watch 13 of the pressure reducing valve 12 as a signal. Specifically, the pressure at the inlet of the pressure reducing valve 12 is used to judge the amount of gas in the bottle before pressure reduction, and the control assembly 2 is switched in time. The circuit is greatly simplified, and even in a smaller laboratory, it can be arranged very conveniently, improving the safety of the laboratory.

[0040] Through the corresponding alarm assembly 3, after receiving the replacement signal, the control assembly 2 will start the alarm assembly 3 of the corresponding gas supply pipeline 1, and the staff can accurately know which gas cylinder needs to be replaced and replace it.

Claims

1. A carbon dioxide cylinder concentration automatic alarm system for a carbon dioxide incubator, comprising a gas supply pipeline (1), the gas supply pipeline (1) comprising a gas cylinder (11) and a pressure reducing valve (12) installed at the gas outlet of the gas cylinder (11), two electronic gauges (13) being provided on the pressure reducing valve (12) to display the pressure at the gas inlet and the gas outlet, characterized in that, The gas supply pipeline (1) has two paths, and the two paths of the gas supply pipeline (1) are connected in parallel with the electromagnetic three-way valve (4), the electromagnetic three-way valve (4) is connected with the carbon dioxide incubator, the electronic watch (13) of the gas supply pipeline (1) is electrically connected with the external control assembly (2), and the control assembly (2) is electrically connected with the alarm assembly (3) and the electromagnetic three-way valve (4).

2. The automatic alarm system for carbon dioxide cylinder concentration of carbon dioxide incubator according to claim 1, characterized in that, The electronic watch (13) at the gas inlet pressure detection position of the pressure reducing valve (12) of the gas supply pipeline (1) is linked through the control assembly (2) and the alarm assembly (3) and the electromagnetic three-way valve (4).

3. The automatic alarm system for the concentration of carbon dioxide cylinder for carbon dioxide incubator according to claim 2, characterized in that, The alarm assembly (3) has two, and the alarm assembly (3) corresponds to the gas supply pipeline (1) one by one.

4. The automatic alarm system for carbon dioxide cylinder concentration of carbon dioxide incubator according to claim 3, characterized in that, The control assembly (2) comprises a PLC controller (21).

5. The automatic alarm system for carbon dioxide cylinder concentration of carbon dioxide incubator according to claim 4, characterized in that, The alarm assembly (3) comprises an audible and visual alarm (31).

6. The automatic alarm system for carbon dioxide cylinder concentration of carbon dioxide incubator according to claim 5, characterized in that, The gas cylinder (11) is arranged in the placing cabinet (5), and the gas cylinders (11) are arranged side by side.

7. The automatic alarm system for carbon dioxide cylinder concentration of carbon dioxide incubator according to claim 6, characterized in that, One side of the placing cabinet (5) is provided with a PLC controller (21).

8. The automatic alarm system for carbon dioxide cylinder concentration of carbon dioxide incubator according to claim 7, characterized in that, The top of the placing cabinet (5) is respectively provided with two audible and visual alarms (31), and the audible and visual alarms (31) are located directly above the corresponding gas cylinders (11).

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