Filling device replacement structure for medical oxygen

Abstract

The utility model relates to the technical field of gas filling, and discloses a filling device replacement structure for medical oxygen, which comprises a T-shaped pipe, and the T-shaped pipe is a connecting pipeline between an oxygen bottle and a gas filling mechanism as well as between the oxygen bottle and a gas exhaust mechanism. And the T-shaped pipe is communicated with the inflating mechanism and the oxygen bottle, so that the inflating mechanism can inflate gas into the oxygen bottle through the T-shaped pipe. Meanwhile, the T-shaped pipe is communicated with the exhaust mechanism and the oxygen bottle, so that the exhaust mechanism can exhaust gas in the oxygen bottle through the T-shaped pipe. A pressure sensor is arranged at the end, facing the oxygen bottle, of the T-shaped pipe, so that the pressure sensor can detect pressure information in the oxygen bottle in real time and send signals to the microprocessor. The microprocessor is used for receiving signals sent by the pressure sensor and controlling starting and stopping of the inflation mechanism and the exhaust mechanism according to pressure information, and therefore residual gas replacement operation is carried out. And through automatic control, the accuracy and high efficiency of the residual gas replacement process can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas filling technical field, concretely relates to a filling device change structure for medical oxygen. BACKGROUND

[0002] During the use of medical oxygen cylinders, as the oxygen is gradually consumed, some residual gas that is not completely discharged may remain in the oxygen cylinder. These residual gases may include air, gas mixed with other gases, or impurity gases mixed during use. The presence of these residual gases can affect the purity of medical oxygen. The purity of medical oxygen needs to reach more than 99.5% to ensure its safety and effectiveness in medical use. In order to meet this standard, residual gas replacement operation must be performed on the oxygen cylinder before filling. Through residual gas replacement operation, the impurity gas remaining in the oxygen cylinder can be completely discharged, ensuring that the medical oxygen after filling meets the purity standard and providing high-quality medical oxygen for patients.

[0003] In the residual gas replacement operation process before filling the medical oxygen cylinder, first connect the oxygen cylinder to the filling equipment and ensure the connection is firm. Open the gas valve and let high-purity oxygen into the oxygen cylinder. When the pressure in the oxygen cylinder reaches 1MPa, close the gas valve. Open the vent valve to completely discharge the gas in the oxygen cylinder. Repeat the above steps three times to ensure that the gas in the oxygen cylinder is completely replaced. Through the above operation, the impurity gas remaining in the oxygen cylinder can be completely discharged.

[0004] In the residual gas replacement process before filling the medical oxygen cylinder, currently mainly relies on manual operation to complete. In this process, the oxygen cylinder needs to be filled and vented multiple times, and manual operation is slow, resulting in low overall efficiency. At the same time, the operator may miss the operation steps or not fully execute the operation steps, resulting in incomplete venting of impurity gas in the oxygen cylinder, which in turn affects the purity of medical oxygen. SUMMARY

[0005] The utility model intends to provide a filling device change structure for medical oxygen, which can avoid incomplete venting of impurity gas in the oxygen cylinder due to human operation errors, and at the same time improve the efficiency of residual gas replacement.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] 1) A filling device structure for medical oxygen, comprising a support and a microprocessor, wherein a T-shaped pipe is arranged on the support and is in communication with an oxygen cylinder, a pressure sensor for measuring pressure information in the oxygen cylinder is arranged at the end of the T-shaped pipe facing the oxygen cylinder, a gas filling mechanism for filling oxygen into the oxygen cylinder is connected to the T-shaped pipe, and a gas discharging mechanism for discharging gas in the oxygen cylinder is connected to the T-shaped pipe, and the pressure sensor, the gas filling mechanism and the gas discharging mechanism are electrically connected to the microprocessor.

[0008] In the utility model, the T-shaped pipe is a connecting pipeline between the oxygen cylinder, the gas filling mechanism and the gas discharging mechanism. The T-shaped pipe is in communication with the gas filling mechanism and the oxygen cylinder, so that the gas filling mechanism can fill gas into the oxygen cylinder through the T-shaped pipe. Meanwhile, the T-shaped pipe is in communication with the gas discharging mechanism and the oxygen cylinder, so that the gas discharging mechanism can discharge gas in the oxygen cylinder through the T-shaped pipe. The end of the T-shaped pipe facing the oxygen cylinder is provided with the pressure sensor, so that the pressure sensor can detect the pressure information in the oxygen cylinder at any time and send signals to the microprocessor. The microprocessor is used for receiving the signals sent by the pressure sensor and controlling the start and stop of the gas filling mechanism and the gas discharging mechanism according to the pressure information, so as to perform the residual gas replacement operation. Through automatic control, the accuracy and efficiency of the residual gas replacement process can be ensured.

[0009] Before the oxygen cylinder is filled, a small amount of gas that is not completely discharged usually remains in the oxygen cylinder, and at this time, there is a small pressure in the oxygen cylinder. Then, the oxygen cylinder is filled with gas, and the pressure in the oxygen cylinder gradually rises. When the pressure sensor detects that the pressure value in the oxygen cylinder rises to 1Mpa, the oxygen cylinder is full of gas, and the pressure sensor sends signals to the microprocessor. After receiving the signals, the microprocessor commands the gas filling mechanism to stop filling, and simultaneously commands the gas discharging mechanism to start discharging. When the gas in the oxygen cylinder is exhausted and the pressure value in the oxygen cylinder drops to 0Mpa, the first residual gas replacement is completed.

[0010] When the pressure sensor detects that the pressure value in the oxygen cylinder drops to 0Mpa, the gas in the oxygen cylinder is exhausted, and the pressure sensor sends signals to the microprocessor. After receiving the signals, the microprocessor commands the gas discharging mechanism to stop discharging, and simultaneously commands the gas filling mechanism to start filling. As the oxygen cylinder is gradually filled with gas, when the pressure sensor detects that the pressure value in the oxygen cylinder rises to 1Mpa, the pressure sensor sends signals to the microprocessor. After receiving the signals, the microprocessor commands the gas filling mechanism to stop filling, and simultaneously commands the gas discharging mechanism to start discharging. When the gas in the oxygen cylinder is completely exhausted and the pressure in the oxygen cylinder drops to 0Mpa again, the second residual gas replacement is completed.

[0011] When the pressure sensor detects that the pressure value in the oxygen cylinder again decreases to 0Mpa, the gas in the oxygen cylinder has been exhausted, and the pressure sensor will send a signal to the microprocessor. After the microprocessor receives the signal, it commands the exhaust mechanism to stop exhausting, and at the same time commands the charging mechanism to start charging. As the oxygen cylinder is gradually filled with gas, when the pressure sensor detects that the pressure value in the oxygen cylinder rises to 1Mpa, the pressure sensor sends a signal to the microprocessor. After the microprocessor receives the signal, it commands the charging mechanism to stop charging, and at the same time commands the exhaust mechanism to start exhausting. When the gas in the oxygen cylinder is completely exhausted, the pressure in the oxygen cylinder again decreases to 0Mpa, and the third residual gas replacement is completed.

[0012] After completing the three residual gas replacements, the impurity gas remaining in the oxygen cylinder can be completely exhausted, ensuring that the medical oxygen after filling meets the purity standard, and providing high-quality medical oxygen for patients. During the above residual gas replacement process, the precise control of the charging mechanism and the exhaust mechanism by the microprocessor effectively avoids the mistakes that may be caused by manual operation, and significantly improves the efficiency of the residual gas replacement.

[0013] 2) The charging mechanism for medical oxygen according to 1), wherein:

[0014] The T-shaped pipe has a gas inlet joint, the gas inlet joint is communicated with a charging pipe, the charging pipe is provided with a first valve, the first valve is arranged close to the gas inlet joint, and the first valve is electrically connected with the microprocessor.

[0015] In the utility model, the charging pipe is a gas conveying pipeline, the gas inlet joint of the T-shaped pipe is connected with the charging pipe, and the charging pipe is convenient for charging gas into the oxygen cylinder. When charging is needed, the first valve is opened, and the gas can enter the oxygen cylinder through the charging pipe; when charging is not needed (such as the exhaust stage), the first valve is closed, which can prevent the backflow of gas and avoid the continuous filling of gas, thereby affecting the exhaust efficiency. The first valve is electrically connected with the microprocessor, can be automatically opened or closed according to the instruction of the microprocessor, thereby realizing the automatic control of the charging process, avoiding the operation mistakes, and improving the efficiency of the residual gas replacement.

[0016] 3) The charging mechanism for medical oxygen according to 1), wherein:

[0017] The T-shaped pipe has a gas outlet joint, the gas outlet joint is connected with an exhaust pipe, the exhaust pipe is provided with a second valve, the second valve is arranged close to the gas outlet joint, and the second valve is electrically connected with the microprocessor.

[0018] The utility model discloses, exhaust pipe is the exhaust pipeline of gas, and the exhaust joint of T type pipe is connected with exhaust pipe, and it is convenient for the gas exhaust in oxygen cylinder. Second valve is equipped on exhaust pipe, when needing to carry out exhaust operation, open second valve, and gas can be exhausted through exhaust pipe, when not needing to exhaust (inflating stage), close second valve can avoid gas exhaust, influence inflating efficiency, cause waste simultaneously. Second valve is electrically connected with microprocessor, can open or close automatically according to the instruction of microprocessor, thereby realize the automatic control of exhaust process, avoid artificial operation mistake, improve the efficiency of residual gas replacement.

[0019] 4) The filling device for medical oxygen according to 1), wherein:

[0020] Further comprising a counter, which is electrically connected with the microprocessor.

[0021] In the utility model, before the oxygen cylinder is filled, a small amount of gas which is not completely exhausted usually remains in the oxygen cylinder, at this time, there is a tiny pressure in the oxygen cylinder. Then the oxygen cylinder is filled with gas, and the pressure in the oxygen cylinder gradually rises. When the pressure sensor detects that the pressure value in the oxygen cylinder rises to 1Mpa, the oxygen cylinder is full of gas, and the pressure sensor sends a signal to the microprocessor. After receiving the signal, the microprocessor commands the gas filling mechanism to stop filling, and at the same time, commands the gas exhaust mechanism to start exhausting, and sends a signal to the counter. After receiving the signal, the counter records the completion of one residual gas replacement.

[0022] When the pressure sensor detects that the pressure value in the oxygen cylinder drops to 0Mpa, the gas in the oxygen cylinder has been exhausted, and the pressure sensor sends a signal to the microprocessor. After receiving the signal, the microprocessor commands the gas exhaust mechanism to stop exhausting, and at the same time, commands the gas filling mechanism to start filling. As the oxygen cylinder is gradually filled with gas, when the pressure sensor detects that the pressure value in the oxygen cylinder rises to 1Mpa, the pressure sensor sends a signal to the microprocessor. After receiving the signal, the microprocessor commands the gas filling mechanism to stop filling, and at the same time, commands the gas exhaust mechanism to start exhausting, and sends a signal to the counter. After receiving the signal, the counter records the completion of one residual gas replacement, and a total of two residual gas replacements are completed.

[0023] When the pressure sensor detects that the pressure value in the oxygen cylinder drops to 0Mpa, the gas in the oxygen cylinder has been exhausted, and the pressure sensor sends a signal to the microprocessor. After receiving the signal, the microprocessor commands the gas exhaust mechanism to stop exhausting, and at the same time, commands the gas filling mechanism to start filling. As the oxygen cylinder is gradually filled with gas, when the pressure sensor detects that the pressure value in the oxygen cylinder rises to 1Mpa, the pressure sensor sends a signal to the microprocessor. After receiving the signal, the microprocessor commands the gas filling mechanism to stop filling, and at the same time, commands the gas exhaust mechanism to start exhausting, and sends a signal to the counter. After receiving the signal, the counter records the completion of one residual gas replacement, and a total of two residual gas replacements are completed.

[0024] When the counter total completes 3 times of residual gas replacement, a signal is sent to the microprocessor. After the microprocessor receives the signal of the counter, it confirms that the residual gas replacement has been completed and enters the filling stage, and then commands the inflation mechanism to inflate the oxygen cylinder. As the gas gradually fills the oxygen cylinder, the pressure in the oxygen cylinder gradually rises. When the pressure in the oxygen cylinder rises to 1Mpa, the pressure sensor sends a signal to the microprocessor. After the microprocessor receives the signal, it confirms that the oxygen cylinder has been filled and commands the inflation mechanism to stop inflating.

[0025] 5) The filling structure for medical oxygen according to 1), wherein:

[0026] The bottom of the bracket is provided with a base, and the upper surface of the base is provided with a groove matching the size of the bottom of the oxygen cylinder.

[0027] In the utility model, the bottom of the bracket is provided with a base, and the surface of the base is provided with a groove, and the size of the groove matches the bottom of the oxygen cylinder, so that the bottom of the oxygen cylinder can be firmly embedded in the groove, thereby fixing the bottom of the oxygen cylinder and ensuring that the oxygen cylinder remains vertical and stable during the filling and residual gas replacement processes. At the same time, the oxygen cylinder can be effectively prevented from moving or toppling due to external force or improper operation during the filling and residual gas replacement processes, thereby reducing safety hazards. In addition, the inner surface of the groove is provided with a sponge layer, which can provide cushioning when the oxygen cylinder is placed or taken out, thereby preventing the bottom of the oxygen cylinder from directly contacting the groove and avoiding damage to the oxygen cylinder.

[0028] 6) The filling structure for medical oxygen according to 1), wherein:

[0029] The bracket is provided with a plurality of collars for fixing the oxygen cylinder along the height direction thereof, and each collar is sleeved on the oxygen cylinder, and the inner surface of the collar is provided with a sponge layer.

[0030] In the utility model, the bracket is provided with a plurality of collars, and each collar is sleeved on the oxygen cylinder. During the process of filling gas and replacing residual gas, the pressure in the oxygen cylinder will change as the gas is filled and discharged in the oxygen cylinder, thereby causing the oxygen cylinder to shake. The collar can fix the oxygen cylinder and keep it stable, thereby avoiding safety hazards caused by shaking. The inner surface of the collar is provided with a sponge layer, and the oxygen cylinder directly contacts the sponge layer, which is used for protecting the surface of the oxygen cylinder and avoiding damage to the surface of the oxygen cylinder caused by collision or friction.

[0031] Compared with the prior art, the utility model also has the following technical effects:

[0032] In the utility model, T type pipe is the connecting pipeline between oxygen cylinder and inflation mechanism and exhaust mechanism. T type pipe connects inflation mechanism and oxygen cylinder, so that inflation mechanism can fill gas into oxygen cylinder through T type pipe. Meanwhile, T type pipe connects exhaust mechanism and oxygen cylinder, so that exhaust mechanism can exhaust gas in oxygen cylinder through T type pipe. The end of T type pipe towards oxygen cylinder is equipped with pressure sensor, so that pressure sensor can detect pressure information in oxygen cylinder at any time and send signal to microprocessor. Microprocessor is used for receiving signal sent by pressure sensor and controls start and stop of inflation mechanism and exhaust mechanism according to pressure information, so as to carry out residual gas replacement operation. Through automatic control, the accuracy and efficiency of residual gas replacement process can be ensured.

[0033] Before oxygen cylinder is filled, a small amount of gas not completely exhausted usually remains in oxygen cylinder, so that there is tiny pressure in oxygen cylinder. Then inflation is started in oxygen cylinder, and the pressure in oxygen cylinder gradually rises. When pressure sensor detects that the pressure value in oxygen cylinder rises to 1Mpa, the oxygen cylinder is full of gas, and pressure sensor sends signal to microprocessor. After receiving signal, microprocessor commands inflation mechanism to stop inflation and simultaneously commands exhaust mechanism to start exhaust. When the gas in oxygen cylinder is exhausted and the pressure value in oxygen cylinder falls to 0Mpa, the first residual gas replacement is completed.

[0034] The above-mentioned step is repeated three times, so that the impurity gas remaining in oxygen cylinder can be completely exhausted, and the medical oxygen after filling meets the purity standard, so as to provide high-quality medical oxygen for patients. In the above-mentioned residual gas replacement process, through the accurate control of microprocessor on inflation mechanism and exhaust mechanism, the errors possibly caused by manual operation are effectively avoided, and the efficiency of residual gas replacement is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is the sectional view of the utility model for medical oxygen filling device structure. DETAILED DESCRIPTION

[0036] The following is further explained in detail through specific embodiments:

[0037] The reference signs in the drawings of the specification include: support 1, T type pipe 2, pressure sensor 3, inflation pipe 4, first valve 5, exhaust pipe 6, second valve 7, base 8, recess 9, sleeve ring 10.

[0038] Embodiment, see Figure 1The filling device for medical oxygen in the embodiment shown includes a support 1 and a microprocessor. The support 1 is provided with a T-shaped pipe 2 in communication with an oxygen cylinder. The end of the T-shaped pipe 2 facing the oxygen cylinder is provided with a pressure sensor 3 for measuring the pressure information in the oxygen cylinder. The T-shaped pipe 2 is connected with a gas filling mechanism for filling oxygen into the oxygen cylinder and an exhaust mechanism for discharging gas in the oxygen cylinder. The pressure sensor 3, the gas filling mechanism and the exhaust mechanism are electrically connected with the microprocessor.

[0039] In the embodiment, the T-shaped pipe 2 is a connecting pipe between the oxygen cylinder and the gas filling mechanism and the exhaust mechanism. The T-shaped pipe 2 connects the gas filling mechanism and the oxygen cylinder, so that the gas filling mechanism can fill gas into the oxygen cylinder through the T-shaped pipe 2. At the same time, the T-shaped pipe 2 connects the exhaust mechanism and the oxygen cylinder, so that the exhaust mechanism can discharge the gas in the oxygen cylinder through the T-shaped pipe 2. The end of the T-shaped pipe 2 facing the oxygen cylinder is provided with the pressure sensor 3, so that the pressure sensor 3 can detect the pressure information in the oxygen cylinder at any time and send signals to the microprocessor. The microprocessor is used for receiving the signals sent by the pressure sensor 3 and controlling the start and stop of the gas filling mechanism and the exhaust mechanism according to the pressure information, so as to perform the residual gas replacement operation. Through automatic control, the accuracy and efficiency of the residual gas replacement process can be ensured.

[0040] Before the oxygen cylinder is filled, a small amount of gas that is not completely discharged usually remains in the oxygen cylinder, and at this time, there is a small pressure in the oxygen cylinder. Then the gas filling into the oxygen cylinder is started, and the pressure in the oxygen cylinder gradually rises. When the pressure sensor 3 detects that the pressure value in the oxygen cylinder rises to 1Mpa, the oxygen cylinder is full of gas, and the pressure sensor 3 sends a signal to the microprocessor. After receiving the signal, the microprocessor commands the gas filling mechanism to stop filling, and at the same time commands the exhaust mechanism to start discharging. When the gas in the oxygen cylinder is exhausted and the pressure value in the oxygen cylinder drops to 0Mpa, the first residual gas replacement is completed.

[0041] When the pressure sensor 3 detects that the pressure value in the oxygen cylinder drops to 0Mpa, the gas in the oxygen cylinder has been exhausted, and the pressure sensor 3 sends a signal to the microprocessor. After receiving the signal, the microprocessor commands the exhaust mechanism to stop discharging, and at the same time commands the gas filling mechanism to start filling. As the oxygen cylinder is gradually filled with gas, when the pressure sensor 3 detects that the pressure value in the oxygen cylinder rises to 1Mpa, the pressure sensor 3 sends a signal to the microprocessor. After receiving the signal, the microprocessor commands the gas filling mechanism to stop filling, and at the same time commands the exhaust mechanism to start discharging. When the gas in the oxygen cylinder is completely exhausted and the pressure in the oxygen cylinder drops to 0Mpa again, the second residual gas replacement is completed.

[0042] When the pressure sensor 3 detects that the pressure value in the oxygen cylinder again decreases to 0 Mpa, the gas in the oxygen cylinder has been exhausted, and the pressure sensor 3 will send a signal to the microprocessor. After the microprocessor receives the signal, it commands the exhaust mechanism to stop exhausting, and at the same time commands the charging mechanism to start charging. As the oxygen cylinder is gradually filled with gas, when the pressure sensor 3 detects that the pressure value in the oxygen cylinder rises to 1 Mpa, the pressure sensor 3 sends a signal to the microprocessor. After the microprocessor receives the signal, it commands the charging mechanism to stop charging, and at the same time commands the exhaust mechanism to start exhausting. When the gas in the oxygen cylinder is completely exhausted, and the pressure in the oxygen cylinder again decreases to 0 Mpa, the third residual gas replacement is completed.

[0043] After completing the three residual gas replacements, the impurity gas remaining in the oxygen cylinder can be completely exhausted, ensuring that the medical oxygen after filling meets the purity standard, and providing high-quality medical oxygen for patients. In the above residual gas replacement process, through the precise control of the microprocessor on the charging mechanism and the exhaust mechanism, the errors that may be caused by manual operation are effectively avoided, and the efficiency of residual gas replacement is significantly improved.

[0044] The T-shaped pipe 2 has a gas inlet joint, the gas inlet joint is communicated with a charging pipe 4, the charging pipe 4 is provided with a first valve 5, the first valve 5 is arranged close to the gas inlet joint, and the first valve 5 is electrically connected with the microprocessor. In the embodiment, the charging pipe 4 is a gas conveying pipeline, the gas inlet joint of the T-shaped pipe 2 is connected with the charging pipe 4, so that the oxygen cylinder can be conveniently filled with gas. When the charging operation is needed, the first valve 5 is opened, and the gas can enter the oxygen cylinder through the charging pipe 4; when the charging is not needed (such as the exhaust stage), the first valve 5 is closed, which can prevent the gas from flowing back and avoid the continuous charging of the gas, thereby affecting the exhaust efficiency. The first valve 5 is electrically connected with the microprocessor, can be automatically opened or closed according to the instruction of the microprocessor, so as to realize the automatic control of the charging process, avoid the operation errors caused by manual operation, and improve the efficiency of residual gas replacement.

[0045] The T-shaped pipe 2 has a gas outlet joint, the gas outlet joint is connected with an exhaust pipe 6, the exhaust pipe 6 is provided with a second valve 7, the second valve 7 is arranged close to the gas outlet joint, and the second valve 7 is electrically connected with the microprocessor. In the embodiment, the exhaust pipe 6 is a gas discharging pipeline, the gas outlet joint of the T-shaped pipe 2 is connected with the exhaust pipe 6, so that the gas in the oxygen cylinder can be conveniently discharged. When the exhaust operation is needed, the second valve 7 is opened, and the gas can be discharged through the exhaust pipe 6; when the exhaust is not needed (the charging stage), the second valve 7 is closed, which can avoid the discharge of the gas, thereby affecting the charging efficiency and causing waste. The second valve 7 is electrically connected with the microprocessor, can be automatically opened or closed according to the instruction of the microprocessor, so as to realize the automatic control of the exhaust process, avoid the operation errors caused by manual operation, and improve the efficiency of residual gas replacement.

[0046] Further, a counter is also included and is electrically connected to the microprocessor. In this embodiment, before the oxygen cylinder is filled, a small amount of gas that has not been completely exhausted will remain in the oxygen cylinder, and at this time, a small pressure exists in the oxygen cylinder. Subsequently, the oxygen cylinder is filled with gas, and the pressure in the oxygen cylinder gradually rises. When the pressure sensor 3 detects that the pressure value in the oxygen cylinder rises to 1 Mpa, the oxygen cylinder is full of gas, and the pressure sensor 3 sends a signal to the microprocessor. After the microprocessor receives the signal, it commands the gas filling mechanism to stop filling gas, and at the same time, commands the gas exhausting mechanism to start exhausting gas, and sends a signal to the counter. After the counter receives the signal, it records that one residual gas replacement is completed.

[0047] When the pressure sensor 3 detects that the pressure value in the oxygen cylinder drops to 0 Mpa, the gas in the oxygen cylinder has been exhausted, and the pressure sensor 3 sends a signal to the microprocessor. After the microprocessor receives the signal, it commands the gas exhausting mechanism to stop exhausting gas, and at the same time, commands the gas filling mechanism to start filling gas. As the oxygen cylinder is gradually filled with gas, when the pressure sensor 3 detects that the pressure value in the oxygen cylinder rises to 1 Mpa, the pressure sensor 3 sends a signal to the microprocessor. After the microprocessor receives the signal, it commands the gas filling mechanism to stop filling gas, and at the same time, commands the gas exhausting mechanism to start exhausting gas, and sends a signal to the counter. After the counter receives the signal, it records that one residual gas replacement is completed, and a total of two residual gas replacements are completed.

[0048] When the pressure sensor 3 detects that the pressure value in the oxygen cylinder drops to 0 Mpa, the gas in the oxygen cylinder has been exhausted, and the pressure sensor 3 sends a signal to the microprocessor. After the microprocessor receives the signal, it commands the gas exhausting mechanism to stop exhausting gas, and at the same time, commands the gas filling mechanism to start filling gas. As the oxygen cylinder is gradually filled with gas, when the pressure sensor 3 detects that the pressure value in the oxygen cylinder rises to 1 Mpa, the pressure sensor 3 sends a signal to the microprocessor. After the microprocessor receives the signal, it commands the gas filling mechanism to stop filling gas, and at the same time, commands the gas exhausting mechanism to start exhausting gas, and sends a signal to the counter. After the counter receives the signal, it records that one residual gas replacement is completed, and a total of three residual gas replacements are completed.

[0049] When the counter completes a total of three residual gas replacements, a signal is sent to the microprocessor. After the microprocessor receives the signal from the counter, it confirms that the residual gas replacement has been completed, and enters the filling stage, and then commands the gas filling mechanism to fill the oxygen cylinder with gas. As the gas gradually fills the oxygen cylinder, the pressure in the oxygen cylinder gradually rises. When the pressure in the oxygen cylinder rises to 1 Mpa, the pressure sensor 3 sends a signal to the microprocessor. After the microprocessor receives the signal, it confirms that the oxygen cylinder has been filled, and commands the gas filling mechanism to stop filling gas.

[0050] The bottom of the support 1 is provided with a base 8, and a groove 9 matching the size of the bottom of the oxygen cylinder is formed on the upper surface of the base 8. The inner surface of the groove 9 is provided with a sponge layer. In this embodiment, the bottom of the support 1 is provided with the base 8, and the surface of the base 8 is provided with the groove 9 matching the size of the bottom of the oxygen cylinder, so that the bottom of the oxygen cylinder can be firmly embedded in the groove, thereby fixing the bottom of the oxygen cylinder and ensuring that the oxygen cylinder remains vertical and stable during the filling and residual gas replacement processes. At the same time, it can effectively prevent the oxygen cylinder from moving or toppling due to external force or improper operation during the filling and residual gas replacement processes, thereby reducing safety hazards. In addition, the inner surface of the groove 9 is provided with a sponge layer, which can provide cushioning when the oxygen cylinder is placed or taken out, preventing direct contact between the bottom of the oxygen cylinder and the groove 9, thereby avoiding damage to the oxygen cylinder.

[0051] Secondly, a plurality of collars 10 for fixing the oxygen cylinder are arranged on the support 1 in the height direction, and each collar 10 is sleeved on the oxygen cylinder. The inner surface of the collar 10 is provided with a sponge layer. In this embodiment, a plurality of collars 10 are arranged on the support 1, and each collar 10 is sleeved on the oxygen cylinder. During the filling and replacement of residual gas, as the gas in the oxygen cylinder is filled and discharged, the pressure in the oxygen cylinder will change, causing the oxygen cylinder to shake. The collar 10 can fix the oxygen cylinder to keep it stable and avoid safety hazards caused by shaking. The inner surface of the collar 10 is provided with a sponge layer, and the oxygen cylinder directly contacts the sponge layer to protect the surface of the oxygen cylinder and avoid damage to the surface of the oxygen cylinder caused by collision or friction.

[0052] In this embodiment, the T-shaped pipe 2 is a connecting pipe between the oxygen cylinder and the filling mechanism and the exhaust mechanism. The T-shaped pipe 2 communicates the filling mechanism and the oxygen cylinder, so that the filling mechanism can fill the gas into the oxygen cylinder through the T-shaped pipe 2. At the same time, the T-shaped pipe 2 communicates the exhaust mechanism and the oxygen cylinder, so that the exhaust mechanism can discharge the gas in the oxygen cylinder through the T-shaped pipe 2. The end of the T-shaped pipe 2 towards the oxygen cylinder is provided with a pressure sensor 3, so that the pressure sensor 3 can detect the pressure information in the oxygen cylinder at any time and send signals to the microprocessor. The microprocessor is used to receive the signals sent by the pressure sensor 3, and controls the start and stop of the filling mechanism and the exhaust mechanism according to the pressure information, thereby performing the residual gas replacement operation. Through automatic control, the accuracy and efficiency of the residual gas replacement process can be ensured.

[0053] Before the oxygen cylinder is filled, a small amount of gas that is not completely discharged usually remains in the oxygen cylinder, at which time a tiny pressure exists in the oxygen cylinder. Subsequently, the gas filling to the oxygen cylinder is started, and the pressure in the oxygen cylinder gradually rises. When the pressure sensor 3 detects that the pressure value in the oxygen cylinder rises to 1Mpa, the oxygen cylinder has been filled with gas, and the pressure sensor 3 sends a signal to the microprocessor. After the microprocessor receives the signal, it commands the gas filling mechanism to stop filling, and at the same time commands the gas discharging mechanism to start discharging. When the gas in the oxygen cylinder is discharged, the pressure value in the oxygen cylinder drops to 0Mpa, and the first residual gas replacement is completed.

[0054] The above step is repeated three times, which can completely discharge the impurity gas remaining in the oxygen cylinder, and ensure that the filled medical oxygen meets the purity standard, and provides high-quality medical oxygen for patients. In the above residual gas replacement process, through the precise control of the microprocessor on the gas filling mechanism and the gas discharging mechanism, the errors that may be caused by manual operation are effectively avoided, and the efficiency of the residual gas replacement is significantly improved.

[0055] The above is only an embodiment of the present application, and the specific technical solutions and / or common knowledge of characteristics in the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A charging / changing structure for medical oxygen, characterized in that, The device includes a support and a microprocessor. The support has a T-shaped tube that communicates with an oxygen cylinder. The end of the T-shaped tube facing the oxygen cylinder has a pressure sensor for measuring the pressure information inside the oxygen cylinder. The T-shaped tube is connected to an inflation mechanism for filling the oxygen cylinder with oxygen and an exhaust mechanism for discharging gas from the oxygen cylinder. The pressure sensor, inflation mechanism, and exhaust mechanism are all electrically connected to the microprocessor.

2. The oxygen filling device replacement structure for medical use according to claim 1, characterized in that: The T-tube has an air inlet connector, which is connected to an inflation tube. The inflation tube is equipped with a first valve, which is located near the air inlet connector and is electrically connected to the microprocessor.

3. The oxygen filling device structure for medical use according to claim 1, characterized in that: The T-shaped tube has an exhaust connector, which is connected to an exhaust pipe. The exhaust pipe is equipped with a second valve, which is located near the exhaust connector and is electrically connected to the microprocessor.

4. The oxygen filling device replacement structure for medical use according to claim 1, characterized in that: It also includes a counter, which is electrically connected to the microprocessor.

5. The oxygen filling device structure for medical use according to claim 1, characterized in that: The support has a base at its bottom, and the upper surface of the base has a groove that matches the size of the bottom of the oxygen cylinder. The inner surface of the groove is provided with a sponge layer.

6. The oxygen filling device structure for medical use according to claim 1, characterized in that: The bracket has several collars along its height for fixing oxygen cylinders. Each collar is fitted onto the oxygen cylinder, and the inner surface of the collar is provided with a sponge layer.

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