Carbon dioxide gas supply device

Abstract

The utility model discloses a carbon dioxide gas supply device which comprises a gas exchange assembly and a gas supply tank set, the gas exchange assembly comprises a gas conveying pipeline, a plurality of branch pipelines, a gas pressure sensor, an electromagnetic valve and a controller, and the branch pipelines are all connected and communicated with the gas conveying pipeline. The air pressure sensors are arranged in the branch pipelines in a one-to-one correspondence mode and used for detecting air pressure values, the electromagnetic valves are arranged at the joints of the branch pipelines and the air conveying pipeline in a one-to-one correspondence mode, and the air pressure sensors and the electromagnetic valves are electrically connected with the controller. The controller controls on-off switching of the electromagnetic valve according to whether the air pressure value reaches the air supply air pressure value or not. By means of the air exchange assembly composed of the air conveying pipeline, the branch pipeline, the air pressure sensor, the electromagnetic valve and the controller, air supply sources can be automatically switched among the multiple air supply tank sets, standby air sources are sufficient, and the situations that the manual air source switching efficiency is low, and timely switching is not easy are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of stem cell culture, in particular to a carbon dioxide gas supply device. Background Art

[0002] Carbon dioxide is both a cell metabolic product and a component required for cell growth and reproduction. Its concentration is generally maintained at 5%. Its role in cell culture is to maintain the pH value of the culture medium. Therefore, a continuous supply of carbon dioxide is required in cell culture. For example, Chinese patent 201520303553.4 discloses a device for delivering carbon dioxide to a clean room cell culture box, including a device for supplying carbon dioxide outside the cell culture clean room and a pipeline for delivering carbon dioxide connected to each cell culture clean room, wherein one end of the pipeline for delivering carbon dioxide is connected to the device for supplying carbon dioxide, and the other end is connected to the gas supply pipe of the cell culture box in the cell culture clean room.

[0003] With regard to the above-mentioned prior art, in order to achieve the purpose of continuous supply in the device for supplying carbon dioxide, multiple groups of gas sources are required. When one group of gas sources is about to be exhausted, it is manually switched to another group of gas sources for supplying carbon dioxide. The manual switching of gas sources is inefficient and difficult to switch in time. Utility Model Content

[0004] The purpose of the utility model is to overcome the above technical deficiencies and provide a carbon dioxide gas supply device to solve the technical problems of low efficiency and difficulty in timely switching of gas sources in the prior art.

[0005] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a carbon dioxide supply device, comprising:

[0007] A ventilation component, comprising a gas pipeline, a branch pipeline, an air pressure sensor, a solenoid valve and a controller, wherein a plurality of the branch pipelines are connected and communicated with the gas pipeline, the air pressure sensors are arranged inside the branch pipelines one by one for detecting the air pressure value, the solenoid valves are arranged at the connection between the branch pipelines and the gas pipeline one by one, the air pressure sensors and the solenoid valves are electrically connected to the controller, and the controller controls the on-off switching of the solenoid valve according to whether the air pressure value reaches the air supply pressure value; and

[0008] A gas supply tank group, which is detachably connected to the branch pipeline in a one-to-one correspondence, and is used to supply carbon dioxide.

[0009] In some embodiments, the gas supply cylinder group includes a plurality of carbon dioxide gas cylinders, and the plurality of carbon dioxide gas cylinders are connected in parallel through pipelines to form a gas supply port, and the gas supply port is connected to the corresponding branch pipelines.

[0010] In some embodiments, an early warning component is also included. The early warning component is arranged in a one-to-one correspondence with the gas supply tank group, and includes a gas shortage indicator light and a gas shortage buzzer. The gas shortage indicator light and the gas shortage buzzer are both arranged beside the gas supply tank group, and the gas shortage indicator light and the gas shortage buzzer are both electrically connected to the controller.

[0011] In some embodiments, the early warning component further includes a gas supply indicator light, which is disposed beside the ventilation component and is electrically connected to the controller.

[0012] In some embodiments, the gas supply indicator light is a green LED light, and the gas shortage indicator light is a red LED light.

[0013] In some embodiments, the pipeline is connected to the carbon dioxide gas cylinders one by one through a plurality of branches to form a parallel connection, and a manual valve is provided on the branch.

[0014] In some embodiments, a transport component is also included, and the transport component is mounted on the gas supply tank group and is used for movably transporting the gas supply tank group.

[0015] In some embodiments, the transfer assembly includes an L-shaped frame and rollers, a plurality of the rollers are arranged on one side of the L-shaped frame, a plurality of storage grooves are recessed downward on the L-shaped frame, and the carbon dioxide gas cylinders are plugged into the storage grooves one by one.

[0016] In some embodiments, a semi-ring frame is provided on the L-shaped frame, and a binding strap is provided between the two ends of the semi-ring frame.

[0017] In some embodiments, one side of the storage slot is opened, and the bottom of the storage slot is in contact with the ground.

[0018] Compared with the prior art, the carbon dioxide gas supply device provided by the utility model can automatically switch the gas supply source between multiple groups of gas supply tanks through a ventilation component composed of a gas transmission pipeline, a branch pipeline, an air pressure sensor, a solenoid valve and a controller, thereby avoiding the low efficiency and difficulty of timely switching of the gas source by manual switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of a carbon dioxide supply device provided by an embodiment of the utility model;

[0020] Figure 2is a front view of a carbon dioxide gas supply device provided by an embodiment of the utility model;

[0021] Figure 3 It is a three-dimensional schematic diagram of a transfer assembly provided by an embodiment of the utility model;

[0022] Figure 4 It is a control principle diagram of the carbon dioxide supply device provided in the embodiment of the utility model.

[0023] Description of reference numerals:

[0024] 1. Ventilation assembly; 11. Gas pipeline; 12. Branch pipeline; 13. Air pressure sensor; 14. Solenoid valve; 15. Controller;

[0025] 2. Gas supply tank group; 21. Carbon dioxide gas tank; 201. Pipeline; 202. Gas supply port; 203. Branch; 204. Manual valve;

[0026] 3. Early warning component; 31. Air shortage indicator light; 32. Air shortage buzzer; 33. Air supply indicator light;

[0027] 4. Transfer assembly; 41. L-shaped frame; 42. Roller; 401. Storage slot; 402. Opening; 403. Semi-ring frame; 404. Strap. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] In order to solve the technical problems of low efficiency and difficulty in timely switching of gas sources manually, the utility model provides a carbon dioxide gas supply device, which can realize efficient automatic switching of gas sources.

[0030] It should be noted that the carbon dioxide gas supply device described in the utility model is used for but not limited to carbon dioxide supply. For the convenience of explanation, in the utility model, only the application of the carbon dioxide gas supply device to carbon dioxide is used as an example for explanation. The principle of applying the carbon dioxide gas supply device to other types of gas supply is essentially the same as the principle applied to carbon dioxide supply, which will not be elaborated here.

[0031] See also Figure 1 , Figure 1This is a three-dimensional schematic diagram of a carbon dioxide gas supply device in one embodiment of the utility model. The carbon dioxide gas supply device includes a ventilation component 1 and a gas supply tank group 2. The ventilation component 1 is used to switch multiple gas supply tank groups 2. The ventilation component 1 includes a gas supply pipeline 11, a branch pipeline 12, an air pressure sensor 13, a solenoid valve 14 and a controller 15. Several of the branch pipelines 12 are connected and communicated with the gas supply pipeline 11. The branch pipeline 12 is used to connect to the corresponding gas supply tank group 2 and connect it to the gas supply pipeline 11. In the connected state, the gas supply pipeline 11 is used to transport carbon dioxide to each cell culture clean room, wherein a main valve is provided on the gas supply pipeline 11 for controlling the on and off of carbon dioxide delivery to each cell culture clean room; during transportation, the air pressure sensors 13 are arranged one-to-one inside the branch pipelines 12 for detecting air pressure values; the solenoid valves 14 ... The solenoid valve 14 is used to control the on-off switching between the gas supply tank group 2 and the gas supply tank 11; the air pressure sensor 13 and the solenoid valve 14 are both electrically connected to the controller 15, and the controller controls the on-off switching of the solenoid valve according to whether the air pressure value reaches the air supply pressure value. The controller 15 receives the detection signal fed back by the air pressure sensor 13, and controls the on-off switching of the solenoid valve 14 accordingly according to the air pressure value. When the air pressure value reaches above the air supply pressure value, it indicates that the gas source can supply carbon dioxide. When the air pressure value is below the air supply pressure value, it indicates that the carbon dioxide in the gas supply tank group 2 is insufficient and needs to be switched. The gas supply tank group 2 is detachably connected to the branch pipeline 12 in a one-to-one correspondence, and is used to supply carbon dioxide.

[0032] In this embodiment, please refer to Figure 4 When the air pressure values ​​detected by each air pressure sensor 13 are higher than the air supply pressure value, the controller 15 controls to open one of the solenoid valves 14 for air supply, that is, the solenoid valve 14 in the branch pipeline 12 on the air supply tank group 2 on this side is opened; when the air pressure value detected by the air pressure sensor 13 on the air supply side is lower than the air supply pressure value, the solenoid valve 14 on this side is controlled to be closed, and at the same time, the solenoid valve 14 whose air pressure value detected by another air pressure sensor 13 is higher than the air supply pressure value is opened, and only one solenoid valve 14 is maintained to form a one-to-one passage with the air supply pipeline 11; wherein, the air supply pressure value can be a value slightly higher than the lowest air pressure value that can be naturally supplied, and is selected according to actual conditions.

[0033] In one embodiment, see Figure 1 and Figure 2The gas supply tank group 2 includes a plurality of carbon dioxide gas tanks 21, and the plurality of carbon dioxide gas tanks 21 are connected in parallel through a pipeline 201 to form a gas supply port 202, and the gas supply port 202 is connected to the corresponding branch pipeline 12 to form a single gas source with sufficient carbon dioxide reserves.

[0034] In this embodiment, a plurality of carbon dioxide gas cylinders 21 are placed side by side, and preferably three carbon dioxide gas cylinders 21 are arranged and placed against a wall.

[0035] In one embodiment, see Figure 1 and Figure 2 , and also includes an early warning component 3 to form an air shortage early warning for a single group of gas supply cylinder groups 2 to prompt the staff to replace it. The early warning component 3 is arranged in a one-to-one correspondence with the gas supply cylinder group 2. One early warning component 3 is arranged corresponding to one gas supply cylinder group 2. The early warning component 3 includes an air shortage indicator light 31 and an air shortage buzzer 32. The air shortage indicator light 31 and the air shortage buzzer 32 are both arranged on the side of the gas supply cylinder group 2. The air shortage indicator light 31 and the air shortage buzzer 32 are both electrically connected to the controller 15. When the air pressure value detected by the air pressure sensor 13 on the gas supply side is lower than the air supply pressure value, the early warning component 3 corresponding to the gas supply cylinder group 2 on this side is controlled by the controller 15 to start the air shortage indicator light 31 and the air shortage buzzer 32, and respectively light up the warning and buzz the warning.

[0036] In this embodiment, the light of the gas shortage indicator light 31 indicates that the gas supply tank group 2 on this side is short of gas and needs to be replaced, and the carbon dioxide residual amount is intuitively fed back to facilitate the staff to replace it in time.

[0037] In one embodiment, see Figure 1 and Figure 2 The warning component 3 also includes a gas supply indicator light 33, which is arranged beside the ventilation component 1 and is electrically connected to the controller 15. The color of the gas supply indicator light 33 is different from the color of the gas shortage indicator light 31 to form a distinction to intuitively feedback the gas supply and gas shortage conditions. When the air pressure value detected by the air pressure sensor 13 is higher than the air supply pressure value, the gas supply indicator light 33 is on, indicating that the gas storage capacity on this side is higher than the minimum gas storage capacity.

[0038] In this embodiment, after replacing the gas supply tank group 2, it is necessary to open the valve of the carbon dioxide gas tank 21 to put this side in a preparatory gas supply state. Therefore, after the valve is opened, the air pressure value will rise above the gas supply pressure value. It is mainly used to provide feedback on whether the gas tank has been replaced and the valve of the gas tank has been opened to put it in a preparatory state to supply gas when the gas source is automatically switched.

[0039] In one embodiment, see Figure 1 and Figure 2 The gas supply indicator light 33 is a green LED light, and the gas shortage indicator light 31 is a red LED light, which are used to distinguish between the two indicator lights.

[0040] In this embodiment, when the gas supply tank group 2 on this side is short of gas, the red LED light of the gas shortage indicator light 31 is on; when the air pressure value of the gas supply tank group 2 on this side is higher than the gas supply pressure value, the green LED light of the gas supply indicator light 33 is on.

[0041] In one embodiment, see Figure 1 and Figure 2 The pipeline 201 is connected to the carbon dioxide gas cylinders 21 one by one through a plurality of branches 203 to form a parallel connection. A manual valve 204 is provided on the branch 203. The gas supply of each carbon dioxide gas cylinder 21 is controlled by opening the manual valve 204.

[0042] In one embodiment, see Figure 1 , Figure 2 and Figure 3 In order to quickly replace the gas supply tank group 2, it also includes a transfer component 4, which is mounted on the gas supply tank group 2 and is used for movably transporting the gas supply tank group 2. That is, the transfer component 4 serves as a supporting base for the gas supply tank group 2 and also as a transfer tool. When supplying gas, it serves as a bottom support, and when changing gas, it serves as a transfer tool, thereby simplifying the replacement operation and facilitating the quick replacement of the gas supply tank group 2.

[0043] Specifically, the transfer component 4 includes an L-shaped frame 41 and rollers 42. Several of the rollers 42 are arranged on one side of the L-shaped frame 41. The number of rollers 42 is preferably two, so as to achieve a stable support effect. When the L-shaped frame 41 is tilted sideways, it can be moved. Several storage grooves 401 are recessed downward on the L-shaped frame 41. The carbon dioxide gas cylinders 21 are plugged into the storage grooves 401 one by one. The carbon dioxide gas cylinders 21 are placed through the storage grooves 401 to form a stable insertion. When the L-shaped frame 41 is close to the ground, support is formed. When the L-shaped frame 41 is tilted sideways, it is supported by the rollers 42 and can be moved.

[0044] Furthermore, in order to improve the stability of the insertion of the carbon dioxide gas cylinder 21, a semi-ring frame 403 is provided on the L-shaped frame 41, and a strap 404 is provided between the two ends of the semi-ring frame 403. The strap 404 is a detachable strap 404. The semi-ring frame 403 is located directly above the storage slot 401 and fits on the outer half of the carbon dioxide gas cylinder 21. The other half is bound by the strap 404 to form a positioning, thereby improving the stability of the insertion.

[0045] Furthermore, in order to facilitate the disassembly of the carbon dioxide gas cylinder 21, an opening 402 is provided on one side of the storage groove 401, and the bottom of the storage groove 401 is close to the ground. By opening the opening 402, the lifting height required to lift the carbon dioxide gas cylinder 21 out of the storage groove 401 is reduced, and it can be directly removed from the opening 402, thereby facilitating its replacement.

[0046] In order to better understand the present invention, the following Figures 1 to 4 The technical solution of the utility model is described in detail: gas supply preparation, the gas supply tank group 2 is provided with two, first the valves of the carbon dioxide gas tank 21 are all opened, and then the manual valves 204 are opened. At this time, the controller 15 opens one of the solenoid valves 14 according to the air pressure value detected by the air pressure sensor 13, and then opens the valve on the gas transmission pipeline 11, and then the carbon dioxide gas can be supplied; the gas source is automatically switched, and the air pressure sensor 13 on the air supply side detects that the air pressure value is lower than the air supply pressure value, and the signal is fed back to the controller 15, and the controller 15 controls Control the solenoid valve 14 on the gas supply side, and open the solenoid valve 14 on the standby side to complete the switching; replace the gas supply tank group 2, disconnect the carbon dioxide gas tank 21 from the branch 203, and tilt the L-shaped frame 41, support it with rollers 42, and move it to transfer a group of gas supply tank groups 2 to the gas tank storage room, remove the used gas tanks from the storage slot 401, and load new gas tanks, and then move them to the gas supply device with the transfer component 4, connect the carbon dioxide gas tank 21 to the branch 203, and open the corresponding valve.

[0047] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A carbon dioxide supply device, characterized in that: include: A ventilation component, comprising a gas pipeline, a branch pipeline, an air pressure sensor, a solenoid valve and a controller, wherein a plurality of the branch pipelines are connected and communicated with the gas pipeline, the air pressure sensors are arranged inside the branch pipelines one by one for detecting the air pressure value, the solenoid valves are arranged at the connection between the branch pipelines and the gas pipeline one by one, the air pressure sensors and the solenoid valves are electrically connected to the controller, and the controller controls the on-off switching of the solenoid valve according to whether the air pressure value reaches the air supply pressure value; as well as A gas supply tank group, which is detachably connected to the branch pipeline in a one-to-one correspondence, and is used to supply carbon dioxide.

2. The carbon dioxide supply device according to claim 1, characterized in that: The gas supply cylinder group includes a plurality of carbon dioxide gas cylinders, and the plurality of carbon dioxide gas cylinders are connected in parallel through pipelines to form a gas supply port, and the gas supply port is connected to the corresponding branch pipelines.

3. The carbon dioxide supply device according to claim 2, characterized in that: It also includes an early warning component, which is arranged in a one-to-one correspondence with the gas supply tank group, and includes a gas shortage indicator light and a gas shortage buzzer, the gas shortage indicator light and the gas shortage buzzer are both arranged beside the gas supply tank group, and the gas shortage indicator light and the gas shortage buzzer are both electrically connected to the controller.

4. The carbon dioxide supply device according to claim 3, characterized in that: The early warning component also includes a gas supply indicator light, which is arranged beside the ventilation component and is electrically connected to the controller.

5. The carbon dioxide supply device according to claim 4, characterized in that: The gas supply indicator light is a green LED light, and the gas shortage indicator light is a red LED light.

6. The carbon dioxide supply device according to claim 5, characterized in that: The pipeline is connected to the carbon dioxide gas cylinders one by one through a plurality of branches to form a parallel connection, and a manual valve is arranged on the branch.

7. The carbon dioxide supply device according to claim 6, characterized in that: It also includes a transfer component, which is mounted on the gas supply cylinder group and is used for movably transferring the gas supply cylinder group.

8. The carbon dioxide supply device according to claim 7, characterized in that: The transfer assembly includes an L-shaped frame and rollers, wherein a plurality of the rollers are arranged on one side of the L-shaped frame, and a plurality of storage grooves are recessed downwards on the L-shaped frame, and the carbon dioxide gas cylinders are plugged into the storage grooves in a one-to-one correspondence.

9. The carbon dioxide supply device according to claim 8, characterized in that: A semi-ring frame is arranged on the L-shaped frame, and binding belts are arranged between the two ends of the semi-ring frame.

10. The carbon dioxide supply device according to claim 9, characterized in that: One side of the storage groove is opened, and the bottom of the storage groove is close to the ground.

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