Medical gas terminal gas tightness detection device

Abstract

The utility model discloses a medical gas terminal gas tightness detection device, comprising a gas supply detection assembly comprising a plurality of gas supply branches arranged side by side, each gas supply branch is provided with a control valve and a gas pressure sensor, and the gas pressure sensor is arranged between the control valve and the tail end of the gas supply branch; the carrying table is provided with a plurality of testing stations arranged side by side, and the testing stations are used for positioning the medical gas terminals to be tested and enabling gas inlet pipes of the medical gas terminals to be tested to face the tail ends of the gas supply branches; the carrying table driving mechanism is used for driving a gas inlet pipe of a to-be-tested medical gas terminal on the carrying table to be butted with or separated from the tail end of the gas supply branch; and the main control module is in electric control connection with the control valve, the air pressure sensor and the carrying table driving mechanism. According to the utility model, the semi-automatic batch detection of the medical gas terminals can be realized, the detection efficiency is higher, and the detection precision is higher.

Description

Technical Field

[0001] This utility model belongs to the field of medical equipment technology, specifically relating to a medical gas terminal airtightness detection device. Background Technology

[0002] Medical gas terminals, also known as gas source connectors or gas sockets, are mainly installed on medical gas distribution equipment in hospital operating rooms, wards, and emergency rooms. Examples include medical resource equipment belts, treatment columns, and gas distribution boxes. Current medical gas terminals consist of a rear base and a front interface. In use, the rear base is fixed to, for example, a medical resource equipment belt in a ward, and then the front interface is connected to the rear base to form a gas supply path to the medical equipment.

[0003] Medical gas terminals are key components in the medical gas supply chain, and their airtightness directly determines the gas supply efficiency and indirectly affects the treatment outcome. Therefore, all medical gas terminals must undergo airtightness testing before leaving the factory.

[0004] In existing technologies, the common practice for testing the airtightness of medical gas terminals is for a worker to hold the terminal and connect it to a gas pipeline to manually sense for leaks. Clearly, this method is inefficient and lacks accuracy. Summary of the Invention

[0005] This utility model provides a medical gas terminal airtightness detection device, aiming to improve the efficiency of medical gas terminal airtightness detection. The technical solution adopted by this utility model is as follows:

[0006] A medical gas terminal airtightness detection device, comprising:

[0007] substrate;

[0008] A gas supply detection component is fixedly mounted on the base plate and includes multiple gas supply branches arranged in parallel. Each gas supply branch is equipped with a control valve and a pressure sensor. The pressure sensor is located between the control valve and the end of the gas supply branch.

[0009] The platform has multiple test stations arranged side by side, which are used to position the medical gas terminal to be tested and to make the air inlet pipe of the medical gas terminal to be tested face the end of the gas supply branch.

[0010] A stage driving mechanism drives the stage to move between a first position and a second position. When the stage is in the first position, the inlet pipe of the medical gas terminal to be tested positioned on the stage is connected to the end of the gas supply branch. When the stage is in the second position, the inlet pipe of the medical gas terminal to be tested positioned on the stage is separated from the end of the gas supply branch.

[0011] The main control module is electrically connected with the control valve, the air pressure sensor and the platform driving mechanism.

[0012] As a preferred technical solution, the end of each of the gas supply branches is provided with a sealed docking nozzle.

[0013] As a preferred technical solution, the air pressure sensor is a pressure transmitter; and the medical gas terminal air tightness detection device further comprises an analog module, an input end of the analog module being connected with the pressure transmitter, and an output end of the analog module being connected with the main control module.

[0014] As a preferred technical solution, the platform driving mechanism is a gas cylinder, a cylinder body of the gas cylinder being fixedly arranged on the base plate, and a driving arm of the gas cylinder being drivingly connected with the platform.

[0015] As a preferred technical solution, the medical gas terminal air tightness detection device further comprises a cabinet, the cabinet being fixedly arranged on the base plate, the gas supply branches, the control valve and the air pressure sensor being arranged in the cabinet, and the sealed docking nozzles being exposed outside the cabinet.

[0016] As a preferred technical solution, the medical gas terminal air tightness detection device further comprises a main pipeline and a main gas supply valve, the main gas supply valve being arranged on the main pipeline, one end of the main pipeline being connected with a high-pressure gas source, and the other end of the main pipeline being simultaneously connected with the plurality of gas supply branches.

[0017] As a preferred technical solution, the medical gas terminal air tightness detection device further comprises a display screen, the display screen being arranged on the cabinet, and the display screen being electrically connected with the main control module.

[0018] As a preferred technical solution, the medical gas terminal air tightness detection device further comprises a key assembly, the key assembly being arranged on the cabinet, and the key assembly being electrically connected with the main control module.

[0019] The medical gas terminal air tightness detection device has the following beneficial effects: a plurality of medical gas terminals to be detected can be placed and positioned on the platform in batches, the platform is driven to the first position by the platform driving mechanism controlled by the main control module, at this time, the gas inlet pipes of the medical gas terminals to be detected are docked with the ends of the corresponding gas supply branches; then, the control valves of the gas supply branches are opened by the main control module, the medical gas terminals to be detected are pressurized, during which the air pressure signals are collected by the corresponding air pressure sensors and fed back to the main control module, and the air tightness of the medical gas terminals to be detected is judged by the main control module according to the air pressure signals; after the detection is completed, the platform is driven to the second position by the platform driving mechanism, at this time, the medical gas terminals after the detection are taken down and classified (qualified or unqualified). BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the embodiment of the utility model clearer, the following will make a brief description of the drawings needed to be used in the embodiment or prior art description.

[0021] Figure 1 It is the perspective view of the medical gas terminal airtightness detection device provided by the embodiment of the utility model.

[0022] Figure 2 It is the control principle diagram of the medical gas terminal airtightness detection device provided by the embodiment of the utility model. DETAILED DESCRIPTION

[0023] In order to make the technical scheme of the present application clearer and the technical advantages more obvious, the technical scheme of the present application will be described clearly and completely in combination with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope disclosed by the present application.

[0024] The specific embodiments of the present application will be further described in combination with the drawings. In order to facilitate the description, the directions are defined in combination with the drawings in the present application. These definitions of directions are only for the purpose of clearly describing the relative position relationship, and are not used to limit the actual directions of the product or device in the production, use, sale and other processes. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Furthermore, in the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing" and the like should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0025] In combination with Figure 1 and Figure 2 As shown in the drawings, the medical gas terminal airtightness detection device 100 provided by the embodiment includes a substrate 10, a gas supply detection assembly 20, a carrier 30, a carrier driving mechanism 40 and a main control module.

[0026] The substrate 10 is fixedly arranged, and the gas supply detection assembly 20 is fixedly arranged on the substrate 10 and located at the rear part above the substrate; the gas supply detection assembly 20 comprises six gas supply branches arranged in parallel, each of which is provided with a control valve and a gas pressure sensor (not shown in the figure), and the control valve is selected from an electromagnetic valve or other valve body capable of realizing electric control; the gas pressure sensor is arranged between the control valve and the end of the gas supply branch. Preferably, the end of each of the gas supply branches is provided with a sealed butt joint nozzle 25.

[0027] Each of the gas supply branches is used to provide a test gas pressure and apply it to the medical gas terminal 200 to be tested, the control valve arranged on each of the gas supply branches is used to control the on-off of the gas supply of the gas supply branch, and the gas pressure sensor arranged on each of the gas supply branches is used to detect the gas pressure in the pipeline during the test, so as to detect the airtightness of the medical gas terminal 200 to be tested.

[0028] In the embodiment, the medical gas terminal airtightness detection device 100 further comprises a casing 50 fixedly arranged at the rear part above the substrate 10, each of the gas supply branches, the control valve and the gas pressure sensor are arranged in the casing 50, and the sealed butt joint nozzle 25 is exposed outside the casing 50.

[0029] The carrier 30 is movably arranged at the front part above the substrate 10, and the carrier 30 has six test stations 31 arranged in parallel, which are used to position the medical gas terminal 200 to be tested and make the gas inlet pipe of the medical gas terminal 200 to be tested face the end of the gas supply branch.

[0030] The carrier driving mechanism 40 is drivingly connected with the carrier 30, and the carrier driving mechanism 40 drives the carrier 30 to move between a first position and a second position, and when the carrier 30 is at the first position, the gas inlet pipe of the medical gas terminal 200 to be tested positioned on the carrier 30 is connected with the end (sealed butt joint nozzle 25) of the gas supply branch; when the carrier 30 is at the second position, the gas inlet pipe of the medical gas terminal 200 to be tested positioned on the carrier 30 is separated from the end (sealed butt joint nozzle 25) of the gas supply branch.

[0031] The main control module can be a PLC control module arranged in the casing 50, and the main control module is electrically connected with the control valve and the gas pressure sensor of each of the gas supply branches. In addition, the carrier driving mechanism 40 is a cylinder controlled by the control valve, the control valve of the cylinder is electrically connected with the main control module, the cylinder body of the cylinder is fixedly arranged on the substrate 10, and the driving arm of the cylinder is drivingly connected with the carrier 30.

[0032] In addition, the gas pressure sensor of each gas supply branch in the embodiment is a pressure transmitter; meanwhile, the medical gas terminal airtightness detection device 100 provided by the embodiment further comprises an analog module (used for converting the collected analog signal into a digital signal), an input end of the analog module is connected with the pressure transmitter, and an output end of the analog module is connected with the main control module. Of course, the gas pressure sensor of each gas supply branch in the embodiment can also be a digital pressure sensor, and the collected digital pressure signal is directly input to the main control module.

[0033] The medical gas terminal airtightness detection device 100 provided by the embodiment further comprises a main pipeline (not shown in the figure) and a main gas supply valve 61, the main gas supply valve 61 is arranged on the main pipeline, one end of the main pipeline is connected with a high-pressure gas source, and the other end is connected with the plurality of gas supply branches.

[0034] The medical gas terminal airtightness detection device 100 provided by the embodiment further comprises a display screen 70 arranged on the casing 50, the display screen 70 is electrically connected with the main control module, and is used for presenting an HMI human-machine interface, displaying operation instructions and test data and the like. The display screen 70 can also be a touch screen, and is used for receiving instruction information and parameter setting and the like.

[0035] As a preferred technical solution, the medical gas terminal airtightness detection device further comprises a key assembly (not shown in the figure) arranged on the casing 50, and the key assembly is electrically connected with the main control module. Specifically, the key assembly can comprise a start button, an emergency stop button and a reset button, which are respectively used for generating a start control signal X10, an emergency stop control signal X0 and a reset control signal X11, as shown in the figure. Figure 2 The start button starts the system to run, the emergency stop button controls the system to stop in an emergency situation or when it is needed to interrupt in the middle, and the reset button resets the system program in an abnormal situation, so that each station is returned to the original position.

[0036] As can be seen from the above, the medical gas terminal airtightness detection device 100 provided in the embodiment can batch place and position multiple to-be-tested medical gas terminals 200 on the table 30, drive the table 30 to move to the first position by the table driving mechanism 40 controlled by the host module, at this time, the gas inlet pipes of each to-be-tested medical gas terminal 200 are in butt joint with the ends (sealed butt joint nozzles 25) of the corresponding gas supply branches; then, the host module controls the control valves of each gas supply branch to open, and pressurizes each to-be-tested medical gas terminal, during which the gas pressure signals are collected by the corresponding gas pressure sensors and fed back to the host module, and the host module judges whether the airtightness is compliant according to the gas pressure signals; after the detection is completed, the table driving mechanism 40 drives the table 30 to move to the second position, at this time, the detected medical gas terminals 200 can be taken off and classified (qualified or unqualified). The medical gas terminal airtightness detection device 100 provided in the embodiment can realize semi-automatic batch detection, that is, test when advancing and exit after testing, and the detection efficiency is higher and the detection precision is higher.

[0037] In combination with Figure 2 the drawings, the control process of the medical gas terminal airtightness detection device 100 provided in the embodiment is described as follows:

[0038] 1. First, manually place the medical gas terminals 200 on each test station 31 of the table 30, check that each test station is normal, and when the emergency stop button is not pressed and the HMI man-machine interface displays that it is ready, the start button can be pressed to start the test system to run;

[0039] 2. After the system runs, the host module outputs a control signal Y7, the cylinder of the table driving mechanism 40 extends, the table 30 and the medical gas terminals 200 thereon are pushed forward, so that the gas inlet pipes of each to-be-tested medical gas terminal 200 are in butt joint with the ends (sealed butt joint nozzles 25) of the corresponding gas supply branches, and when the cylinder inductive switch signal X7 is connected, it indicates that the cylinder has advanced to the position;

[0040] 3. The host module outputs control signals Y1-Y6 in turn, and drives the control valves of each gas supply branch to open in turn, at this time, the compressed air enters the to-be-tested medical gas terminal 200, and after a delay of 5 seconds, the host module cancels the control signals Y1-Y6, so that the control valves of each gas supply branch corresponding to the test stations 1-6 are closed, at this time, the pressure test begins;

[0041] 4. When the pressure holding time reaches 30 seconds, the analog values of the 1-6 station transmitters collected by the analog module are processed and calculated to be converted into pressure values, and are temporarily stored in the register of the host module; continue to hold pressure to 60 seconds, and collect the pressure values again, at this time, the system compares the pressure values at 60 seconds with the pressure values temporarily stored at 30 seconds, when the difference is within the allowable range, the HMI man-machine interface displays that the station is qualified, otherwise, it is displayed as unqualified and becomes red to remind.

[0042] 5. After the operator confirms the test results of each station, press the confirmation button on the HMI. The system will then control the cylinder of the stage drive mechanism 40 to return to the origin. At this point, the test process ends. After reinstalling the medical gas terminal 200, press the start button to start the next cycle.

[0043] The above are preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A medical gas terminal airtightness testing device characterized by comprising: The utility model relates to a medical gas terminal airtightness detection device, including: a substrate; a gas supply detection assembly fixedly arranged on the substrate, including multiple gas supply branches arranged side by side, a control valve and a gas pressure sensor are arranged on each gas supply branch, and the gas pressure sensor is arranged between the control valve and the end of the gas supply branch; a carrier table having multiple test stations arranged side by side, the test stations are used to position a medical gas terminal to be tested and make the gas inlet pipe of the medical gas terminal to be tested face the end of the gas supply branch; a carrier table driving mechanism driving the carrier table to move between a first position and a second position, when the carrier table is in the first position, the gas inlet pipe of the medical gas terminal to be tested positioned on the carrier table is connected with the end of the gas supply branch; when the carrier table is in the second position, the gas inlet pipe of the medical gas terminal to be tested positioned on the carrier table is separated from the end of the gas supply branch; a main control module electrically connected with the control valve, the gas pressure sensor and the carrier table driving mechanism.

2. The medical gas terminal airtightness testing device according to claim 1, characterized by The end of each gas supply branch is provided with a sealed docking nozzle.

3. The medical gas terminal airtightness testing device according to claim 1, characterized by The gas pressure sensor is a pressure transmitter; the medical gas terminal airtightness detection device further includes an analog module, the input end of the analog module is connected with the pressure transmitter, and the output end is connected with the main control module.

4. The medical gas terminal airtightness testing device according to claim 1, characterized by The carrier table driving mechanism is a pneumatic cylinder, the cylinder body of the pneumatic cylinder is fixedly arranged on the substrate, and the driving arm of the pneumatic cylinder is drivingly connected with the carrier table.

5. The medical gas terminal airtightness testing device according to claim 2, characterized by Further including a cabinet fixedly arranged on the substrate, the gas supply branch, the control valve and the gas pressure sensor are arranged in the cabinet, and the sealed docking nozzle is exposed outside the cabinet.

6. The medical gas terminal airtightness testing device according to claim 5, characterized by Further including a main pipeline and a main gas supply valve, the main gas supply valve is arranged on the main pipeline, one end of the main pipeline is connected with a high-pressure gas source, and the other end is connected with multiple gas supply branches.

7. The medical gas terminal airtightness testing device according to claim 5, characterized by Further including a display screen arranged on the cabinet, the display screen is electrically connected with the main control module.

8. The medical gas terminal airtightness testing device according to claim 5, characterized by Further including a key assembly arranged on the cabinet, the key assembly is electrically connected with the main control module.

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