A gas supply pressure regulating assembly for a portable life support system

Abstract

The utility model discloses a kind of gas supply pressure regulating components of portable life support system, including shell and the microprocessor being set in shell and with portable life support system electric connection, wherein, the side wall of shell is provided with air inlet and air outlet, the inside of shell is provided with the gas supply pipeline being communicated between air inlet and air outlet;Gas supply pipeline is sequentially provided with primary pressure regulating mechanism and secondary pressure regulating mechanism from air inlet to air outlet direction;Primary pressure regulating mechanism includes primary filter, primary pressure regulating valve and first pressure sensor sequentially located downstream of air inlet;Secondary pressure regulating mechanism includes secondary pressure regulating valve, secondary filter and second pressure sensor sequentially located downstream of first pressure sensor;The output end of microprocessor is connected with the output end of first pressure sensor and second pressure sensor respectively, and the controlled end of primary pressure regulating valve and secondary pressure regulating valve is connected with the output end of microprocessor respectively.The utility model is good and the pressure regulating precision is high.

Description

Technical Field

[0001] This utility model relates to the field of medical emergency equipment technology, specifically to a gas pressure regulating component for a portable life support system. Background Technology

[0002] In special scenarios such as medical emergency rescue, high-altitude operations, and fire rescue, portable life support systems are key equipment for ensuring the safety of personnel. Such systems usually rely on high-pressure gas sources (such as compressed oxygen cylinders) to provide breathing gas, but existing gas supply pressure regulating devices have the following defects: (1) single-stage pressure regulation is easily affected by changes in ambient temperature, resulting in large fluctuations in output pressure; (2) there is a lack of effective safety protection mechanisms, posing a risk of overpressure explosion; (3) the structure is bulky and inconvenient to carry. Therefore, there is an urgent need for a gas supply pressure regulating component that is small in size, lightweight, has high pressure regulation accuracy, and has safety guarantees. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a gas supply pressure regulating component for a portable life support system, so as to solve the problems of large size and weight, poor portability and low pressure regulation accuracy of the gas supply pressure regulating device in the prior art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0005] A gas supply pressure regulating component for a portable life support system includes a housing and a microprocessor disposed within the housing and electrically connected to the portable life support system. The housing has an air inlet and an air outlet on its side wall, and an air supply pipe connecting the air inlet and outlet is disposed inside the housing. A primary pressure regulating mechanism and a secondary pressure regulating mechanism are sequentially arranged on the air supply pipe from the air inlet to the air outlet. The primary pressure regulating mechanism includes a primary filter, a primary pressure regulating valve, and a first pressure sensor sequentially located downstream of the air inlet. The secondary pressure regulating mechanism includes a secondary pressure regulating valve, a secondary filter, and a second pressure sensor sequentially located downstream of the first pressure sensor. The input terminal of the microprocessor is connected to the output terminals of the first and second pressure sensors, respectively, and the output terminal of the microprocessor is connected to the controlled terminals of the primary and secondary pressure regulating valves, respectively.

[0006] Preferably, the primary filter element is a double-layer stainless steel filter screen, and the secondary filter element is an activated carbon fiber composite filter element.

[0007] Preferably, the gas supply pipeline is provided with a proportional valve located upstream of the primary pressure regulating mechanism, and the controlled end of the proportional valve is connected to the output end of the microprocessor.

[0008] Preferably, the gas supply pipeline is equipped with a flow sensor located downstream of the secondary pressure regulating mechanism, and the output end of the flow sensor is connected to the input end of the microprocessor.

[0009] Preferably, the gas supply pipeline is connected to a pressure relief pipeline located downstream of the flow sensor. The pressure relief pipeline is connected to a pressure relief port located on the side wall of the housing and open to the outside. The pressure relief pipeline is also equipped with a pressure relief valve, and the controlled end of the pressure relief valve is connected to the output end of the microprocessor.

[0010] Preferably, a check valve is provided at the end of the gas supply pipeline that connects to the gas outlet.

[0011] Preferably, the bottom of the housing is provided with a mounting plate, and the mounting plate has mounting holes for screws to pass through to install the housing in the host of the portable life support system.

[0012] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0013] This invention significantly improves the stability of gas supply: through the coordinated operation of the primary and secondary pressure regulating mechanisms, combined with the intelligent control of the microprocessor, it can achieve precise regulation and stable output of oxygen pressure, effectively eliminate the influence of changes in ambient temperature on pressure, and ensure that patients can obtain a stable oxygen supply under different respiratory conditions.

[0014] This invention significantly enhances safety: by using a pressure relief valve and a pressure relief pipeline, it can automatically open to relieve pressure when excessive pressure is detected, preventing pipeline rupture or component damage caused by excessive pressure and significantly reducing the risk of explosion.

[0015] This invention effectively improves oxygen utilization: by monitoring oxygen flow in real time through a flow sensor and combining it with a proportional valve to achieve flow control, the oxygen supply can be adjusted according to the patient's actual breathing needs, avoiding oxygen waste and extending the oxygen supply time.

[0016] This invention features a high degree of integration: it integrates voltage regulation, filtration, detection, and control functions into a compact housing, making it easy to install in portable life support systems and suitable for use in mobile rescue environments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the principle of this utility model.

[0018] The components are: 1. Housing, 2. Air inlet, 3. Air outlet, 4. Air supply pipe, 5. Primary pressure regulating mechanism, 51. Primary filter element, 52. Primary pressure regulating valve, 53. First pressure sensor, 6. Secondary pressure regulating mechanism, 61. Secondary pressure regulating valve, 62. Secondary filter element, 63. Secondary pressure sensor, 7. Proportional valve, 8. Flow sensor, 9. Pressure relief pipe, 10. Pressure relief port, 11. Pressure relief valve, 12. Check valve, 13. Mounting plate, 14. Mounting hole. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] A portable life support system gas pressure regulating component, combined with Figures 1 to 3 As shown, the system includes a housing 1 and a microprocessor. The microprocessor is housed within the housing 1 and electrically connected to the control unit of the portable life support system. The side wall of the housing 1 has an air inlet 2, an air outlet 3, and a pressure relief port 10. The air inlet 2 is used to connect to an oxygen source (such as a high-pressure oxygen cylinder or oxygen generator), the air outlet 3 is used to connect to a patient's breathing mask, and the pressure relief port 10 opens outwards for pressure relief. An air supply pipe 4 is located inside the housing 1, connecting the air inlet 2 and the air outlet 3. A primary pressure regulating mechanism 5 and a secondary pressure regulating mechanism 6 are sequentially arranged on the air supply pipe 4 from the air inlet 2 to the air outlet 3.

[0021] The primary pressure regulating mechanism 5 includes a primary filter element 51, a primary pressure regulating valve 52, and a first pressure sensor 53, which are located sequentially downstream of the air inlet 2. The output of the first pressure sensor 53 is connected to the input of a microprocessor, and the output of the microprocessor is connected to the controlled end of the primary pressure regulating valve 52. The primary filter element 51 uses a double-layer stainless steel filter screen, which can effectively filter larger particulate impurities in the oxygen. The primary pressure regulating valve 52 is an electric regulating valve that receives signals from the microprocessor to adjust its opening. The first pressure sensor 53 monitors the gas pressure after primary pressure regulation in real time.

[0022] The secondary pressure regulating mechanism 6 includes a secondary pressure regulating valve 61, a secondary filter element 62, and a second pressure sensor 63, which are sequentially located downstream of the first pressure sensor 53. The output of the second pressure sensor 63 is connected to the input of a microprocessor, and the output of the microprocessor is connected to the controlled end of the secondary pressure regulating valve 61. The secondary pressure regulating valve 61 is also an electrically operated regulating valve for more precise pressure regulation. The secondary filter element 62 uses an activated carbon fiber composite filter element to adsorb fine particles and harmful gases. The second pressure sensor 63 monitors the pressure of the final output gas.

[0023] A proportional valve 7 is installed on the gas supply pipeline 4. The proportional valve 7 is located upstream of the primary pressure regulating mechanism 5. The controlled end of the proportional valve 7 is connected to the output end of the microprocessor. The proportional valve 7 is used to adjust the intake air volume according to the instructions of the microprocessor.

[0024] A flow sensor 8 is installed on the gas supply pipeline 4. The flow sensor 8 is located downstream of the secondary pressure regulating mechanism 6. The output end of the flow sensor 8 is connected to the input end of the microprocessor. The flow sensor 8 monitors the oxygen flow in real time and transmits the data to the microprocessor.

[0025] A pressure relief pipe 9 is connected to the gas supply pipe 4. The pressure relief pipe 9 is located downstream of the flow sensor 8, and the other end of the pressure relief pipe 9 is connected to the pressure relief port 10. A pressure relief valve 11 is also installed on the pressure relief pipe 9. The controlled end of the pressure relief valve 11 is connected to the output end of the microprocessor. When the pressure is too high, it will automatically open to relieve pressure.

[0026] A check valve 12 is installed at the end of the gas supply pipeline 4 that connects to the gas outlet 3. The check valve 12 is used to prevent gas backflow and ensure that the gas flows in one direction.

[0027] The bottom of the housing 1 is provided with a mounting plate 13, and the mounting plate 13 is provided with mounting holes 14. The mounting holes 14 are used to install the housing 1 into the main unit of the portable life support system by screws, thereby installing the entire component into the main unit of the portable life support system, which facilitates overall installation and fixation.

[0028] The working principle of this utility model is as follows: After the system starts, high-pressure oxygen enters the gas supply pipeline 4 from the inlet 2. It first undergoes preliminary flow regulation through the proportional valve 7, and then enters the primary pressure regulating mechanism 5. In the primary pressure regulating mechanism 5, the oxygen first passes through the primary filter element 51 to filter out larger particulate impurities, and then undergoes preliminary pressure reduction through the primary pressure regulating valve 52. The first pressure sensor 53 monitors the pressure value after primary pressure regulation in real time and transmits the data to the microprocessor.

[0029] The microprocessor compares the pressure value detected by the first pressure sensor 53 with the preset value, and sends a control signal to adjust the opening of the primary pressure regulating valve 52 so that the pressure after primary pressure regulation is stabilized within the preset range.

[0030] After primary pressure regulation, the oxygen continues to flow to the secondary pressure regulating mechanism 6. First, it undergoes more precise pressure regulation through the secondary pressure regulating valve 61. Then, it passes through the secondary filter element 62 to adsorb small particles and harmful gases. Finally, the second pressure sensor 63 monitors the pressure value of the final output gas and transmits the data to the microprocessor.

[0031] Based on the monitoring data from the second pressure sensor 63, the microprocessor finely adjusts the opening of the secondary pressure regulating valve 61 to ensure that the pressure of the final output gas is precisely stabilized at the set value.

[0032] The flow sensor 8 monitors the flow rate of the output gas in real time. The microprocessor intelligently adjusts the opening of the proportional valve 7 based on the flow data and the parameters set by the human-machine interface of the portable life support system to achieve on-demand oxygen supply and avoid oxygen waste.

[0033] When the system detects an abnormal increase in pressure, the microprocessor will control the pressure relief valve 11 to open, and discharge excess gas through the pressure relief pipe 9 and the pressure relief port 10 to prevent excessive pressure from causing danger.

[0034] Check valve 12 prevents gas backflow, ensuring that oxygen flows unidirectionally to the patient and preventing the patient's exhaled gas from flowing back into the gas supply pipe 4 and contaminating the gas supply.

[0035] Through the above-described process, this invention achieves precise oxygen pressure regulation, intelligent control, and safety assurance, significantly improving the stability and safety of the gas supply in portable life support systems.

Claims

1. A gas supply pressure regulating assembly for a portable life support system, comprising a housing (1) and a microprocessor disposed within the housing (1) and electrically connected to the portable life support system, characterized in that: An air inlet (2) and an air outlet (3) are provided on the side wall of the housing (1). An air supply pipe (4) connecting the air inlet (2) and the air outlet (3) is provided inside the housing (1). A primary pressure regulating mechanism (5) and a secondary pressure regulating mechanism (6) are arranged sequentially from the air inlet (2) to the air outlet (3) on the air supply pipe (4). The primary pressure regulating mechanism (5) includes a primary filter element (51), a primary pressure regulating valve (52), and a first pressure sensor (53) located downstream of the air inlet (2). The secondary pressure regulating mechanism (6) includes a secondary pressure regulating valve (61), a secondary filter element (62), and a second pressure sensor (63) located downstream of the first pressure sensor (53). The input end of the microprocessor is connected to the output end of the first pressure sensor (53) and the second pressure sensor (63) respectively. The output end of the microprocessor is connected to the controlled end of the primary pressure regulating valve (52) and the secondary pressure regulating valve (61) respectively.

2. The air pressure regulating component of a portable life support system according to claim 1, characterized in that: The primary filter element (51) is a double-layer stainless steel filter screen, and the secondary filter element (62) is an activated carbon fiber composite filter element.

3. The air pressure regulating component of a portable life support system according to claim 1, characterized in that: The gas supply pipeline (4) is equipped with a proportional valve (7) located upstream of the primary pressure regulating mechanism (5), and the controlled end of the proportional valve (7) is connected to the output end of the microprocessor.

4. The air pressure regulating component of a portable life support system according to claim 3, characterized in that: A flow sensor (8) is installed on the gas supply pipeline (4) downstream of the secondary pressure regulating mechanism (6), and the output end of the flow sensor (8) is connected to the input end of the microprocessor.

5. The air pressure regulating component of a portable life support system according to claim 4, characterized in that: The gas supply pipe (4) is connected to a pressure relief pipe (9) located downstream of the flow sensor (8). The pressure relief pipe (9) is connected to a pressure relief port (10) located on the side wall of the housing (1) and open to the outside. The pressure relief pipe (9) is also equipped with a pressure relief valve (11). The controlled end of the pressure relief valve (11) is connected to the output end of the microprocessor.

6. The air pressure regulating component of a portable life support system according to claim 1, characterized in that: A check valve (12) is provided at the end of the gas supply pipe (4) that connects to the gas outlet (3).

7. The air pressure regulating component of a portable life support system according to claim 1, characterized in that: The bottom of the housing (1) is provided with a mounting plate (13), and the mounting plate (13) has mounting holes (14) for screws to pass through to install the housing (1) in the host of the portable life support system.

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