Test equipment for oxygen supply equipment

Abstract

The utility model discloses a test device for oxygen supply equipment. The test device comprises a gas source input pipeline, a gas outlet pipeline and a gas outlet pipeline, the triggering simulation pipeline is connected with the gas source input pipeline and used for triggering oxygen supply equipment and detecting gas outlet parameters of the oxygen supply equipment, and the other end of the triggering simulation pipeline is connected with the gas outlet end of the oxygen supply equipment; the air source control pipeline is connected with the air source input pipeline and is used for adjusting and detecting the pressure and the flow entering the air inlet end of the oxygen supply equipment, and the other end of the air source control pipeline is connected with the air inlet end of the oxygen supply equipment; and the control module is connected with the trigger simulation pipeline and the gas source control pipeline and is used for controlling the trigger simulation pipeline and the gas source control pipeline to be opened and closed. Through the arrangement of the trigger simulation pipeline and the gas source control pipeline, the oxygen supply equipment is automatically triggered at a set specific frequency, manual operation is reduced, and the device is efficient and convenient and has multiple test functions; and meanwhile, the system has the characteristics of low cost, high reliability and strong practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of testing equipment for oxygen supply equipment, in particular to testing equipment for oxygen supply equipment. Background Art

[0002] With the continuous improvement of modern automated processing technology, various types of oxygen supply equipment have been widely used and their performance has become more and more diversified. In order to ensure the precision of the automated production process, it is usually necessary to calibrate the various performances of the produced oxygen supply equipment. For example, whether the various parameter indicators of the oxygen supply equipment meet the standards requires strict calibration and testing.

[0003] Among them, the tests of various parameter indicators of oxygen supply equipment on the market are mostly carried out by manual operation, which is neither accurate nor efficient. Especially when a large number of oxygen supply equipment need to be tested, manual operation testing is time-consuming and laborious, and cannot meet the company's demand for efficient production. Therefore, there is an urgent need for an efficient and convenient testing equipment to enable companies to efficiently complete the task of qualified testing of oxygen supply equipment. Utility Model Content

[0004] The utility model provides a test device for oxygen supply equipment, so as to overcome the technical problem that manual test operation is mostly adopted when the performance of the oxygen supply equipment is tested in the prior art, resulting in low production efficiency.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A testing device for oxygen supply equipment, comprising:

[0007] A gas source input pipeline for inputting gas;

[0008] A trigger simulation pipeline connected to the gas source input pipeline for triggering the oxygen supply device and detecting the gas outlet parameters of the oxygen supply device, wherein the other end of the trigger simulation pipeline is connected to the gas outlet end of the oxygen supply device;

[0009] An air source control pipeline connected to the air source input pipeline for adjusting and detecting the pressure and flow rate of air entering the air inlet end of the oxygen supply device, wherein the other end of the air source control pipeline is connected to the air inlet end of the oxygen supply device;

[0010] A control module connected to the trigger simulation pipeline and the gas source control pipeline for controlling the switches of the trigger simulation pipeline and the gas source control pipeline.

[0011] Further, the trigger simulation pipeline includes a second solenoid valve, a second throttle valve, a negative pressure generator, a differential pressure gauge, a one-way ventilation valve and a flow sensor which are sequentially arranged in a direction close to the oxygen supply equipment; or,

[0012] A second throttle valve, a second solenoid valve, a negative pressure generator, a differential pressure gauge, a one-way ventilation valve and a flow sensor are sequentially arranged in a direction close to the oxygen supply equipment;

[0013] The flow sensor is arranged between the one-way ventilation valve and the air outlet end of the oxygen supply equipment.

[0014] Further, the gas source control pipeline includes a first solenoid valve, a first throttle valve and a pressure gauge which are sequentially arranged in a direction close to the oxygen supply equipment; or,

[0015] A first throttle valve, a first solenoid valve and a pressure gauge are arranged in sequence along a direction close to the oxygen supply equipment.

[0016] Furthermore, the gas source input pipeline is provided with a pressure stabilizing valve.

[0017] Furthermore, the number of the one-way vent valve is one or more, and the multiple one-way vent valves are connected in parallel.

[0018] Furthermore, the one-way vent valve is a one-way vent valve with an opening pressure less than 100Pa.

[0019] Furthermore, the lower limit of the range of the differential pressure gauge is less than or equal to -100 Pa.

[0020] Furthermore, the range of the differential pressure gauge is -100-0Pa.

[0021] Further, the control module includes a control circuit, a first switch, a second switch and a display screen unit;

[0022] The first switch, the second switch, the display screen unit, the first solenoid valve, the second solenoid valve and the flow sensor are all electrically connected to the control circuit;

[0023] The control circuit is used to control the working states of the first solenoid valve and the second solenoid valve according to the on-off instruction of the solenoid valve, and to send the data transmitted by the flow sensor to the display screen unit;

[0024] The first switch is used to issue an instruction to control the on and off of the first solenoid valve, and the second switch is used to issue an instruction to control the on and off of the second solenoid valve;

[0025] The flow sensor is used to obtain gas flow data and send it to the control circuit;

[0026] The display screen unit is used to display gas flow data.

[0027] Beneficial effects: The utility model designs a test device for oxygen supply equipment. By triggering the setting of the simulation pipeline and the gas source control pipeline, the oxygen supply equipment is automatically triggered by setting a specific frequency, which reduces manual operation, is efficient and convenient, and has multiple testing functions; at the same time, it has the characteristics of low cost, high reliability and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 It is a first structural schematic diagram of a test device of an oxygen supply device connected to the oxygen supply device in the utility model;

[0030] Figure 2 A second structural schematic diagram of a test device of an oxygen supply device in the utility model being connected to the oxygen supply device;

[0031] Figure 3 A third structural schematic diagram of the connection between a test device of an oxygen supply device and the oxygen supply device in the utility model;

[0032] Figure 4 It is a schematic diagram of the structure of connecting multiple one-way ventilation valves in an embodiment of the utility model.

[0033] In the figure: 1, housing; 2, pressure regulating valve; 3, second throttle valve; 4, second solenoid valve; 5, negative pressure generator; 6, flow sensor; 7, control circuit; 8, first solenoid valve; 9, first throttle valve; 10, pressure gauge; 11, differential pressure gauge; 12, one-way vent valve; 13, second switch; 14, display unit; 15, first switch; 16, oxygen supply equipment;

[0034] 101. Gas source input interface mounting hole; 102. Gas source control pipeline port mounting hole; 103. Trigger simulation pipeline port mounting hole;

[0035] A. Gas source input pipeline; B. Trigger simulation pipeline; C. Gas source control pipeline; D. Control module. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] This embodiment provides a test device for oxygen supply equipment, such as Figures 1 to 4 As shown, it includes a gas source input pipeline A for inputting gas;

[0038] A trigger simulation pipeline B connected to the gas source input pipeline A for triggering the oxygen supply device and detecting the gas outlet parameters of the oxygen supply device, wherein the other end of the trigger simulation pipeline B is connected to the gas outlet end of the oxygen supply device 16;

[0039] An air source control pipeline C connected to the air source input pipeline A for adjusting and detecting the pressure and flow rate entering the air inlet end of the oxygen supply device, wherein the other end of the air source control pipeline C is connected to the air inlet end of the oxygen supply device 16;

[0040] A control module D is connected to the trigger simulation pipeline B and the gas source control pipeline C and is used to control the switches of the trigger simulation pipeline B and the gas source control pipeline C.

[0041] Specifically, in this embodiment, when the test device is working, one interface of the gas source input pipeline A is connected to the oxygen source, which can be an oxygen machine or a portable oxygen storage tank or other permitted oxygen sources, and the other interface is respectively connected to one end of the trigger simulation pipeline B and one end of the gas source control pipeline C, the other end of the trigger simulation pipeline B is connected to the outlet end of the oxygen supply device to simulate human breathing to trigger the oxygen supply device, and the other end of the gas source control pipeline C is connected to the inlet end of the oxygen supply device to provide oxygen input to the oxygen supply device. This test device can realize multiple test modes, including: oxygen supply device outlet pressure test, oxygen supply device flow / gas volume test, single pulse oxygen supply duration test of the pulse mode of the oxygen supply device, trigger pressure test, false trigger test and air tightness test. Specifically, the oxygen supply device to be tested can be an oxygen conservator or oxygen supply device and other equipment that needs to be tested for performance by simulating air intake and outlet.

[0042] In a specific embodiment, the trigger simulation pipeline B includes a second solenoid valve 4, a second throttle valve 3, a negative pressure generator 5, a differential pressure gauge 11, a one-way ventilation valve 12 and a flow sensor 6 which are sequentially arranged in a direction close to the oxygen supply equipment; or,

[0043] A second throttle valve 3, a second solenoid valve 4, a negative pressure generator 5, a differential pressure gauge 11, a one-way ventilation valve 12 and a flow sensor 6 are sequentially arranged in a direction close to the oxygen supply equipment;

[0044] The flow sensor 6 is arranged between the one-way ventilation valve 12 and the gas outlet end of the oxygen supply device 16 .

[0045] Specifically, Figure 1 and Figure 2 As shown, the trigger simulation pipeline B is used to simulate human breathing to trigger the oxygen supply equipment 16 and detect the outlet parameters of the oxygen supply equipment 16, wherein the positions of the second solenoid valve 4 and the second throttle valve 3 can be swapped, and the negative pressure generator 5 is used to generate negative pressure gas in the opposite direction based on the input gas source, thereby simulating human inhalation to trigger the oxygen supply equipment, and can realize a variety of set frequency pulse triggering functions, solving the problem of irregular manual triggering; the differential pressure gauge 11 is used to display the set pressure value; the one-way ventilation valve 12 is used to discharge the gas after the oxygen supply equipment is triggered, and the one-way ventilation valve 12 is arranged at the front end of the differential pressure gauge 11, that is, closer to the oxygen supply equipment, which can avoid the differential pressure gauge from exceeding the range, so as to facilitate subsequent smooth testing.

[0046] In a specific embodiment, Figure 3 and Figure 4 As shown, the number of the one-way vent valve 12 is one or more, and the multiple one-way vent valves are connected in parallel.

[0047] In a specific embodiment, the gas source control pipeline C includes a first solenoid valve 8, a first throttle valve 9 and a pressure gauge 10 which are sequentially arranged in a direction close to the oxygen supply equipment; or,

[0048] A first throttle valve 9, a first solenoid valve 8 and a pressure gauge 10 are arranged in sequence along a direction close to the oxygen supply equipment.

[0049] Specifically, Figure 2 and Figure 3 As shown, the gas source control pipeline C is used to control and detect the pressure conditions of the air inlet end of the oxygen supply device, wherein the positions of the first solenoid valve 8 and the first throttle valve 9 can be swapped, and the pressure gauge is used to display the set pressure value of the input gas source so as to adjust the pressure of the input gas source as needed.

[0050] In a specific embodiment, Figure 1 As shown, the gas source input pipeline A is provided with a pressure stabilizing valve 2. Specifically, the gas source pressure is stabilized by the pressure stabilizing valve 2 to ensure the accuracy of the test result.

[0051] In a specific embodiment, since the gas in the gas circuit has a certain gas pressure, the gas circuit may be open due to the pressure; therefore, it is necessary to use a joint that can achieve a tight connection at the gas circuit joint without an open circuit. Therefore, the trigger simulation pipeline B is connected to the gas outlet of the oxygen supply device 16 through a self-locking pneumatic joint; the gas source control pipeline C is also connected to the gas inlet of the oxygen supply device 16 through a self-locking pneumatic joint.

[0052] In a specific embodiment, the one-way vent valve 12 is a one-way vent valve with an opening pressure less than 100 Pa. Specifically, the opening pressure of the one-way vent valve 12 should be less than 100 Pa to ensure smooth release of the gas after the oxygen supply device is triggered to exhaust.

[0053] In a specific embodiment, the range of the differential pressure gauge 11 is at least -100-0 Pa. Specifically, since the actual trigger pressure of the oxygen supply equipment is usually -80 to -5 Pa, the lower limit of the range of the differential pressure gauge is less than or equal to -100 Pa. In this embodiment, preferably, the range of the differential pressure gauge 11 is -100-0 Pa to achieve accurate measurement of the gas pressure.

[0054] In a specific embodiment, the control module D includes a control circuit 7, a first switch 15, a second switch 13 and a display screen unit 14; the first switch 15, the second switch 13, the display screen unit 14, the first solenoid valve 8, the second solenoid valve 4 and the flow sensor 6 are all electrically connected to the control circuit 7; the control circuit 7 is used to control the working states of the first solenoid valve 8 and the second solenoid valve 9 according to the solenoid valve on-off instruction, and to send the data transmitted by the flow sensor 6 to the display screen unit; the first switch 15 is used to issue an instruction to control the on-off of the first solenoid valve, and the second switch 13 is used to issue an instruction to control the on-off of the second solenoid valve; the flow sensor 6 is used to obtain gas flow data and send it to the control circuit 7; the display screen unit 14 is used to display the gas flow data.

[0055] Specifically, in this embodiment, the first switch 15 is a two-position one-open one-close self-locking switch, and the second switch 13 is a self-resetting switch.

[0056] Specifically, in this embodiment, a pressure sensor is also provided on the control circuit. The pressure sensor is arranged on the control circuit and is provided with an air circuit connector. The pressure sensor is connected to the air outlet of the oxygen supply equipment through the connector to detect the pressure at the air outlet of the oxygen supply equipment.

[0057] In this embodiment, if Figure 1As shown, a test device for an oxygen supply equipment also includes a shell 1, and partial structures of the gas source input pipeline, the trigger simulation pipeline and the gas source control pipeline are arranged in the shell, and the shell is provided with a gas source input interface mounting hole 101, a trigger simulation pipeline port mounting hole 103 and a gas source control pipeline port mounting hole 102, and the gas source input pipeline, the trigger simulation pipeline and the gas source control pipeline are connected to the outside through the gas source input interface mounting hole, the trigger simulation pipeline port mounting hole and the gas source control pipeline port mounting hole respectively.

[0058] Specifically, the test equipment in this embodiment can be used to perform six test items on the oxygen supply equipment. Parameters are set before the test. The specific process is as follows:

[0059] Connect the gas source, connect the power of the test equipment and turn it on, do not connect the oxygen supply equipment first, close the second solenoid valve, open the first switch, adjust the opening of the pressure regulating valve to set the gas source pressure, and observe the pressure indication; connect a pipeline directly between the interface of the gas source control pipeline and the interface of the trigger simulation pipeline, open the first switch, adjust the opening of the first throttle valve to set the gas source flow, observe the first throttle valve range indication, and after completing the gas source parameter setting, disconnect the pipeline connected between the gas source control pipeline and the trigger simulation pipeline.

[0060] After the parameter setting is completed, the specific tests include:

[0061] 1) Trigger stress test. The specific process is as follows:

[0062] Connect the gas source input pipeline to the gas source, press the first switch to open the first solenoid valve, press the second switch to close the second solenoid valve, turn on the gas source, long press the second switch, and adjust the second throttle valve to set the trigger pressure, observe the pressure difference indication number, connect the air inlet and outlet ends of the oxygen supply equipment to the gas source control pipeline and the trigger simulation pipeline respectively, turn on the oxygen supply equipment, adjust the oxygen supply equipment to different pulse gears, and observe the triggering situation of the oxygen supply equipment. If the oxygen supply equipment is not triggered, it means that the set trigger pressure is too small. At this time, the trigger pressure needs to be increased. Finally, the trigger pressure of the oxygen supply equipment is determined through continuous debugging.

[0063] 2) False trigger test, the specific process is as follows:

[0064] The gas source input pipeline is connected to the gas source, the gas source control pipeline is connected to the air inlet end of the oxygen supply equipment, the trigger simulation pipeline is connected to the air outlet end of the oxygen supply equipment, the first switch is pressed to open the first solenoid valve, the second switch is pressed to open the second solenoid valve, and the gas source and the oxygen supply equipment are turned on. The second solenoid valve can be turned on and off at different frequencies through the control circuit setting to simulate human breathing states of different frequencies to trigger the oxygen supply equipment, so that the test equipment can trigger the oxygen supply equipment at different triggering frequencies, and observe the triggering state of the oxygen supply equipment. If the triggering of the oxygen supply equipment and the triggering of the test equipment are synchronized, it means that the triggering is correct.

[0065] 3) Flow / gas volume test, the specific process is:

[0066] The gas source input pipeline is connected to the gas source, the gas source control pipeline is connected to the air inlet end of the oxygen supply equipment, the trigger simulation pipeline is connected to the air outlet end of the oxygen supply equipment, the first switch is pressed to open the first solenoid valve, the second switch is pressed to open the second solenoid valve, the gas source and the oxygen supply equipment are turned on, and the oxygen supply equipment is adjusted to a continuous gear. The gas flows through the flow sensor, and the output flow of the continuous gear of the oxygen supply equipment is detected by the flow sensor. The flow sensor transmits the detection result to the control circuit through an electrical signal, and then displays it on the display screen; the oxygen supply equipment is adjusted to each pulse gear in turn, and the gas volume of the oxygen supply equipment at different gears is detected by the flow sensor and transmitted to the control circuit for display on the display screen; at the same time, the control circuit can obtain the cumulative gas volume of the oxygen supply equipment according to the above-mentioned flow and gas volume detection, and display it on the display screen.

[0067] 4) Outlet pressure test, the specific process is as follows:

[0068] The gas source input pipeline is connected to the gas source, the gas source control pipeline is connected to the air inlet end of the oxygen supply equipment, the trigger simulation pipeline is connected to the air outlet end of the oxygen supply equipment, the first switch is pressed to open the first solenoid valve, the second switch is pressed to open the second solenoid valve, the gas source and the oxygen supply equipment are turned on, and the oxygen supply equipment is adjusted to a continuous gear. The gas will flow through the pressure sensor on the control circuit and be detected by the pressure sensor. The outlet pressure value of the oxygen supply equipment will be detected and displayed on the display screen.

[0069] 5) Single pulse oxygen supply duration test, the specific process is as follows:

[0070] The gas source input pipeline is connected to the gas source, the gas source control pipeline is connected to the air inlet end of the oxygen supply equipment, the trigger simulation pipeline is connected to the air outlet end of the oxygen supply equipment, the first switch is pressed to open the first solenoid valve, the second switch is pressed to open the second solenoid valve, the gas source and the oxygen supply equipment are turned on, and the oxygen supply equipment is adjusted to each pulse gear in turn. The control circuit can detect the duration of a single oxygen supply by interrupting the air flow, and display the indication on the display screen.

[0071] 6) Air tightness test, the specific process is:

[0072] The gas source input pipeline is connected to the gas source, and the gas source control pipeline is connected to the air inlet end of the oxygen supply equipment. Press the second switch to close the second solenoid valve, open the gas source, and the gas enters the gas circuit where the first solenoid valve is located. After the pressure indication number stabilizes, press the first switch to close the first solenoid valve and observe the pressure indication number. If the pressure indication number does not change, it means that the air tightness is good.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A test device for oxygen supply equipment, characterized in that: include: A gas source input pipeline (A) for inputting gas; A trigger simulation pipeline (B) connected to the gas source input pipeline (A) for triggering the oxygen supply device and detecting the gas outlet parameters of the oxygen supply device, the other end of the trigger simulation pipeline (B) being connected to the gas outlet end of the oxygen supply device (16); An air source control pipeline (C) connected to the air source input pipeline (A) for adjusting and detecting the pressure and flow rate of air entering the air inlet end of the oxygen supply device, wherein the other end of the air source control pipeline (C) is connected to the air inlet end of the oxygen supply device (16); A control module (D) connected to the trigger simulation pipeline (B) and the gas source control pipeline (C) for controlling the switch of the trigger simulation pipeline (B) and the gas source control pipeline (C).

2. The test device for oxygen supply equipment according to claim 1, characterized in that: The trigger simulation pipeline (B) comprises a second solenoid valve (4), a second throttle valve (3), a negative pressure generator (5), a differential pressure gauge (11), a one-way ventilation valve (12) and a flow sensor (6) which are sequentially arranged in a direction close to the oxygen supply equipment; or, A second throttle valve (3), a second solenoid valve (4), a negative pressure generator (5), a differential pressure gauge (11), a one-way ventilation valve (12) and a flow sensor (6) are sequentially arranged in a direction close to the oxygen supply equipment; The flow sensor (6) is arranged between the one-way ventilation valve (12) and the gas outlet end of the oxygen supply device (16).

3. The test device for oxygen supply equipment according to claim 2, characterized in that: The gas source control pipeline (C) comprises a first solenoid valve (8), a first throttle valve (9) and a pressure gauge (10) which are sequentially arranged in a direction close to the oxygen supply equipment; or, A first throttle valve (9), a first solenoid valve (8) and a pressure gauge (10) are arranged in sequence in a direction close to the oxygen supply equipment.

4. The test device for oxygen supply equipment according to claim 1, characterized in that: The gas source input pipeline (A) is provided with a pressure stabilizing valve (2).

5. The test device for oxygen supply equipment according to claim 2, characterized in that: The number of the one-way vent valve (12) is one or more, and the multiple one-way vent valves are connected in parallel.

6. The test device for oxygen supply equipment according to claim 5, characterized in that: The one-way vent valve (12) is a one-way vent valve with an opening pressure less than 100 Pa.

7. The test device for oxygen supply equipment according to claim 2, characterized in that: The lower limit of the range of the differential pressure gauge (11) is less than or equal to -100 Pa.

8. The test device for oxygen supply equipment according to claim 7, characterized in that: The range of the differential pressure gauge (11) is -100-0Pa.

9. The test device for oxygen supply equipment according to claim 3, characterized in that: The control module (D) comprises a control circuit (7), a first switch (15), a second switch (13) and a display screen unit (14); The first switch (15), the second switch (13), the display screen unit (14), the first solenoid valve (8), the second solenoid valve (4) and the flow sensor (6) are all electrically connected to the control circuit (7); The control circuit (7) is used to control the working states of the first solenoid valve (8) and the second solenoid valve (4) according to the solenoid valve on-off instruction, and to send the data transmitted by the flow sensor (6) to the display screen unit; The first switch (15) is used to issue an instruction to control the on / off of the first solenoid valve, and the second switch (13) is used to issue an instruction to control the on / off of the second solenoid valve; The flow sensor (6) is used to obtain gas flow data and send it to the control circuit (7); The display screen unit (14) is used to display gas flow data.

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