Detector of self-rescuer

Abstract

The utility model provides a detector of a self-rescuer. The detector comprises at least one air inlet device, an air inlet valve, at least one air outlet device, an air outlet valve, a pressure control switch, a first pressure release valve, a detection connector, an air buffer cavity, a second pressure release valve and an air pressure meter, wherein the pressure control switch is used for controlling the on-off of power supplies of the air inlet device, the air inlet valve, the air outlet device and the air outlet valve; the air inlet valve and the exhaust valve are connected with the first interface of the detection joint; a pressure control switch and a first pressure release valve are connected to pipelines between the air inlet valve and the detection joint and between the exhaust valve and the detection joint; the second interface is connected with a self-rescuer to be detected; the third interface is respectively connected with the gas buffer cavity, the second pressure release valve and the barometer; the first interface, the second interface and the third interface of the detection joint are communicated. According to the self-rescuer detector, a plurality of air inlet devices are arranged in the self-rescuer detector, each air inlet device is provided with an independent switch, large-flow air inlet or small-flow air inlet can be achieved at the same time, the air inlet speed is high, operation is easy and convenient, and the detection efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of self-rescuer detectors, in particular to a self-rescuer detector. Background Art

[0002] Compressed oxygen self-rescuer is a portable respiratory protection device for personnel in mines and coal mines to prevent poisoning by harmful gases or suffocation due to lack of oxygen when fire, gas and coal dust explosion, coal and gas outburst occur underground. It is a standard device for every person going down the mine. The performance status of compressed oxygen self-rescuer is related to the life, health and safety of personnel. Therefore, the detection of the performance of compressed oxygen self-rescuer is a very important daily work for each relevant unit.

[0003] The existing self-rescuer detectors mostly have a single flow rate output for the air supply, which cannot meet the requirements of the self-rescuer detection standards. In addition, the flow rate is small and the inflation speed is slow. A lot of time is spent on the inflation step. The operation is cumbersome and requires repeated opening and closing of the air valve. The inspection efficiency is low and the operating experience is poor. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a detector for a self-rescuer, and the scheme is as follows:

[0005] A detector for a self-rescuer, comprising: at least one air intake device, an air intake valve, at least one exhaust device, an exhaust valve, a pressure control switch for controlling the power on and off of the air intake device, the air intake valve, the exhaust device and the exhaust valve, a first pressure relief valve, a detection joint, a gas buffer chamber, a second pressure relief valve and a pressure gauge; wherein:

[0006] The air outlet of the air intake device is connected to the air intake valve used to adjust the sealing degree of the air intake of the air intake device;

[0007] The air inlet of the exhaust device is connected to the exhaust valve used to adjust the sealing degree of the exhaust port of the exhaust device;

[0008] The air inlet valve and the air exhaust valve are both connected to the first interface of the detection connector;

[0009] The pressure control switch and the first pressure relief valve are connected to the pipeline between the intake valve and the exhaust valve and the detection joint;

[0010] The second interface of the detection connector is connected to the self-rescuer to be detected; the third interface of the detection connector is respectively connected to the gas buffer chamber, the second pressure relief valve and the pressure gauge; the first interface, the second interface and the third interface of the detection connector are connected.

[0011] In a specific embodiment, the air intake device includes an air intake fan and an air intake pump, and the exhaust device includes an exhaust fan;

[0012] Also includes: an exhaust throttle valve and an intake throttle valve;

[0013] The exhaust valve connected to the air outlet of the exhaust fan includes a first exhaust solenoid valve and a second exhaust solenoid valve; the first exhaust solenoid valve is connected to the first interface of the detection joint; the second exhaust solenoid valve is connected to the first interface of the detection joint through the exhaust throttle valve; the exhaust flow rate corresponding to the first exhaust solenoid valve is greater than the exhaust flow rate corresponding to the second exhaust solenoid valve;

[0014] The air intake valve connected to the air outlet of the air intake pump includes: a first air intake solenoid valve; the first air intake solenoid valve is connected to the first interface of the detection joint through the air intake throttle valve;

[0015] The air intake valve connected to the air outlet of the air intake fan includes a second air intake solenoid valve; the second air intake solenoid valve is connected to the first interface of the detection connector.

[0016] In a specific embodiment, it further includes: a first control module for controlling the exhaust fan, the first exhaust solenoid valve and the second exhaust solenoid valve;

[0017] a second control module for controlling the air intake pump and the first air intake solenoid valve;

[0018] And a third control module for controlling the air intake fan and the second air intake solenoid valve.

[0019] In a specific embodiment, the first control module includes: a first exhaust switch, a second exhaust switch, a first exhaust solenoid valve coil, and a second exhaust solenoid valve coil;

[0020] The first exhaust switch is connected to the first exhaust solenoid valve coil and the exhaust fan respectively, and the first exhaust solenoid valve coil is connected to the first exhaust solenoid valve, so as to control the exhaust fan switch and the opening and closing of the first exhaust solenoid valve coil based on the first exhaust switch, and then control the first exhaust solenoid valve switch through the opening and closing of the first exhaust solenoid valve coil;

[0021] The second exhaust switch is connected to the second exhaust solenoid valve coil and the exhaust fan respectively, and the second exhaust solenoid valve coil is connected to the second exhaust solenoid valve, so as to control the exhaust fan switch and the opening and closing of the second exhaust solenoid valve coil based on the second exhaust switch, and then control the second exhaust solenoid valve switch through the opening and closing of the second exhaust solenoid valve coil;

[0022] The second control module includes: a first air intake switch and a first air intake solenoid valve coil; the first air intake switch is connected to the first air intake solenoid valve coil and the air intake pump, so as to control the switch of the air intake pump based on the first air intake switch, and control the opening and closing of the first air intake solenoid valve coil, and then control the switch of the first air intake solenoid valve through the opening and closing of the first air intake solenoid valve coil;

[0023] The third control module includes: a second air intake switch and a second air intake solenoid valve coil; the second air intake switch is connected to the second air intake solenoid valve coil and the air intake fan to control the switch of the air intake fan based on the second air intake switch, and control the opening and closing of the second air intake solenoid valve coil, and then control the second air intake solenoid valve switch by opening and closing of the second air intake solenoid valve coil.

[0024] In a specific embodiment, it also includes a first relay coil, a first relay normally closed contact, a second relay coil and a second relay normally closed contact;

[0025] The first relay coil is connected to the first exhaust switch and the second exhaust switch respectively, so that when the first exhaust switch or the second exhaust switch is closed, the first relay coil is turned on by power; the first relay coil is arranged corresponding to the first relay normally closed contact, so that when the first relay coil is turned on by power, the first relay normally closed contact is driven to be opened; the first relay normally closed contact is arranged on the power supply line of the intake fan, so that when the first relay normally closed contact is opened, the intake fan is controlled to be turned off;

[0026] The second relay coil is connected to the second air intake switch, so that when the second air intake switch is closed, the second relay coil is powered on; the second relay coil is arranged corresponding to the normally closed contact of the second relay, so that when the second relay coil is powered on, the normally closed contact of the second relay is driven to be opened, and the normally closed contact of the second relay is arranged on the power supply line of the exhaust fan, so that when the normally closed contact of the second relay is opened, the exhaust fan is controlled to be closed;

[0027] One or more of the first exhaust switch, the second exhaust switch, the first air intake switch, and the second air intake switch include touch-sensitive switches.

[0028] In a specific embodiment, it also includes: a box;

[0029] The air intake device, the air intake valve, the exhaust device, the exhaust valve, the pressure control switch, the first pressure relief valve, the detection joint, the gas buffer chamber, the second pressure relief valve and the pressure gauge are all arranged in the box.

[0030] In a specific embodiment, the box body further includes: a first gas mass flow meter, a first flow meter filter, a first detection interface, a first flow detection connector, and a first gas interface for connecting the self-rescuer to be tested, which are connected in sequence;

[0031] It also includes: a second gas mass flow meter, a second flow meter filter, a second detection interface, a second flow detection connector and a second gas interface for connecting the self-rescuer to be tested, which are connected in sequence.

[0032] In a specific embodiment, it further comprises: a power switch; one end of the power switch is connected to an external power source, and the other end of the power switch is connected to the pressure control switch;

[0033] The barometer, the first gas mass flow meter and the second gas mass flow meter are connected between the power switch and an external power supply.

[0034] In a specific embodiment, the detection joint includes: a pressure detection joint, a pressure detection pressure measuring joint and a pressure detection air supply joint connected in sequence;

[0035] The pressure detection joint is provided with the first interface; the pressure detection pressure measuring joint is provided with the second interface; the pressure detection air supply joint is provided with the third interface.

[0036] In a specific embodiment, the first pressure relief valve includes an automatic pressure relief valve or a manual pressure relief valve, the second pressure relief valve includes an automatic pressure relief valve or a manual pressure relief valve, and the pressure gauge includes an electronic micro pressure gauge.

[0037] Beneficial effects: The utility model arranges a plurality of air intake devices in the self-rescuer detector, and arranges an independent switch for each air intake device, which can realize large-flow air intake or small-flow air intake at the same time, with fast air intake speed, simple operation and high detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0040] Figure 2 This is a schematic diagram of the connection hole structure of the utility model;

[0041] Figure 3 This is a schematic diagram of the structure of the clamping fixture of the utility model;

[0042] Figure 4 The utility model is a schematic diagram of the internal structure of the detector body of the self-rescuer.

[0043] The accompanying drawings are marked as follows: A-box; a-air intake device; a1-intake valve; b-exhaust device; b1-exhaust valve; 1-exhaust fan; 2-intake pump; 3-intake fan; 4-first exhaust solenoid valve; 5-second exhaust solenoid valve; 6-exhaust throttle valve; 7-first intake solenoid valve; 8-intake throttle valve; 9-second intake solenoid valve; 10-pressure control switch; 11-first pressure relief valve; 12-detection connector; 12a first interface; 12b-second interface; 12c-third interface; 13-self-rescuer to be detected; 14-gas buffer chamber; 15-second pressure relief valve; 16-barometer; 17-first exhaust switch; 18-first exhaust solenoid valve coil; 19-second exhaust Switch; 20-second exhaust solenoid valve coil; 21-first air intake switch; 22-first air intake solenoid valve coil; 23-second air intake switch; 24-second air intake solenoid valve coil; 25-first gas mass flow meter; 26-first flow meter filter; 27-first detection interface; 28-first flow detection connector; 29-first gas interface; 30-second gas mass flow meter; 31-second flow meter filter; 32-second detection interface; 33-second flow detection connector; 34-second gas interface; 35-power supply switch; 36a-first relay coil; 36b-first relay normally closed contact; 37a-second relay coil; 37b-second relay normally closed contact. DETAILED DESCRIPTION

[0044] The concept, specific structure and technical effects of the present invention will be clearly and completely described below in combination with the embodiments and drawings to fully understand the purpose, features and effects of the present invention.

[0045] In the following, various embodiments of the present invention will be described more fully. The present invention may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present invention to the specific embodiments disclosed herein, but rather the present invention should be understood to cover all adjustments, equivalents and / or alternatives that fall within the spirit and scope of the various embodiments of the present invention.

[0046] Hereinafter, the terms "include" or "may include" used in various embodiments of the present invention indicate the presence of disclosed functions, operations or elements, and do not limit the addition of one or more functions, operations or elements. In addition, as used in various embodiments of the present invention, the terms "include", "have" and their cognates are intended only to indicate specific features, numbers, steps, operations, elements, components or combinations of the foregoing, and should not be understood as first excluding the presence of one or more other features, numbers, steps, operations, elements, components or combinations of the foregoing or the possibility of adding one or more features, numbers, steps, operations, elements, components or combinations of the foregoing.

[0047] In various embodiments of the present invention, the expression "or" or "at least one of A or / and B" includes any combination or all combinations of the words listed at the same time. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0048] The expressions (such as "first", "second", etc.) used in the various embodiments of the present invention may modify the various components in the various embodiments, but may not limit the corresponding components. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used for the purpose of distinguishing one element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, without departing from the scope of the various embodiments of the present invention, the first element may be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0049] It should be noted that in the present invention, unless otherwise clearly specified and defined, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present invention, those skilled in the art need to understand that the terms indicating orientation or positional relationship herein are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] The terms used in the various embodiments of the present invention are only used for the purpose of describing specific embodiments and are not intended to limit the various embodiments of the present invention. As used herein, the singular form is intended to also include the plural form, unless the context clearly indicates otherwise. Unless otherwise defined, all terms used herein (including technical terms and scientific terms) have the same meaning as the meanings commonly understood by ordinary technicians in the field of the various embodiments of the present invention. The terms (such as the terms defined in the dictionary used in general) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning, unless clearly defined in the various embodiments of the present invention.

[0052] Embodiment 1

[0053] In this embodiment, a plurality of air intake devices are arranged in the self-rescuer detector, and an independent switch is arranged for each air intake device, so that a large flow air intake or a small flow air intake can be realized at the same time, and the air intake speed is fast, the operation is simple, and the detection efficiency is high.

[0054] A detector for a self-rescuer, as shown in the attached Figure 1 As shown, it includes: at least one air intake device a, an air intake valve a1, at least one air exhaust device b, an air exhaust valve b1, a pressure control switch 10 for controlling the power on and off of the air intake device a, the air intake valve a1, the air exhaust device b and the air exhaust valve b1, a first pressure relief valve 11, a detection joint 12, a gas buffer chamber 14, a second pressure relief valve 15 and a pressure gauge 16; wherein:

[0055] The air outlet of the air intake device a is connected to an air intake valve a1 for adjusting the sealing degree of the air intake of the air intake device a;

[0056] The air inlet of the exhaust device b is connected to an exhaust valve b1 for adjusting the sealing degree of the exhaust port of the exhaust device b;

[0057] The intake valve a1 and the exhaust valve b1 are both connected to the first interface 12a of the detection connector 12;

[0058] A pressure control switch 10 and a first pressure relief valve 11 are connected to the pipeline between the intake valve a1 and the exhaust valve b1 and the detection joint 12;

[0059] The second interface 12b of the detection connector 12 is connected to the self-rescuer 13 to be detected; the third interface 12c of the detection connector 12 is respectively connected to the gas buffer chamber 14, the second pressure relief valve 15 and the pressure gauge 16; the first interface 12a, the second interface 12b and the third interface 12c of the detection connector 12 are connected.

[0060] This embodiment provides a detector for a self-rescuer, which mainly includes the following key components:

[0061] Inlet device a: As the initial gas source input end of the detector, the air intake device a is responsible for introducing external air or specific test gas, and its outlet is closely connected to the air intake valve a1. The air intake valve a1 can control the sealing degree of the air intake of the air intake device a through precise adjustment to simulate the gas inflow under different pressure environments, providing basic conditions for the sealing and functional testing of the self-rescuer.

[0062] Intake valve a1: This valve not only adjusts the intake volume, but also serves as a key component connecting the intake device a and the detection system. Together with the exhaust valve b1, it is connected to the detection process through the first interface 12a of the detection connector 12 to ensure accurate control of gas flow.

[0063] Exhaust device b: responsible for safely exhausting the gas generated during the test or the remaining gas after the test is completed. The exhaust valve b1 connected to its air inlet also has the function of adjusting the sealing degree to control the exhaust efficiency and speed to meet different test requirements.

[0064] Pressure control switch 10: This core component is integrated in the pipeline between the intake valve a1 and the exhaust valve b1 to the detection joint 12. By monitoring the changes in the gas pressure in the pipe, it automatically or manually controls the power on and off, thereby starting or stopping the test process to ensure the safety and accuracy of the detection process.

[0065] The first pressure relief valve 11 is arranged behind the pressure control switch 10 and is used as a safety valve. When the internal pressure of the system exceeds the preset safety threshold, it automatically opens to release the excess pressure to prevent equipment damage or safety accidents. In practical applications, the first pressure relief valve 11 can be an automatic pressure relief valve or a manual pressure relief valve.

[0066] Detection connector 12: As a bridge between the detector and the self-rescuer to be tested, it has three interfaces: the first interface 12a connects the air inlet valve a1 and the exhaust valve b1 to realize the input and output control of the gas; the second interface 12b is directly connected to the self-rescuer 13 to be tested, ensuring that the test gas can smoothly enter the self-rescuer for testing; the third interface 12c is connected to the gas buffer chamber 14, the second pressure relief valve 15 and the pressure gauge 16, which are respectively used for stabilizing the gas flow, secondary safety pressure relief and real-time display of the internal air pressure of the system to ensure accurate reading of the test data.

[0067] Gas buffer chamber 14: located in the detection process, used to smooth the gas flow, reduce the impact of pressure fluctuations on the test results, and improve the detection accuracy.

[0068] The second pressure relief valve 15: as the second safety line, it further ensures that the pressure can be quickly released when the system is abnormal, protecting the safety of equipment and personnel. In practical applications, the second pressure relief valve 15 can be an automatic pressure relief valve or a manual pressure relief valve.

[0069] Pressure gauge 16: Real-time display of the internal air pressure of the detector, providing intuitive data reference for operators, facilitating adjustment of test conditions and judgment of the performance status of the self-rescuer.

[0070] In summary, the self-rescuer detector realizes comprehensive, efficient and safe detection of self-rescuers by integrating multiple precision components and intelligent control mechanisms. It is an important tool for improving the reliability of emergency rescue equipment.

[0071] In a specific embodiment, the air intake device a includes an air intake fan 3 and an air intake pump 2, and the exhaust device b includes an exhaust fan 1;

[0072] It also includes: an exhaust throttle valve 6 and an intake throttle valve 8;

[0073] The exhaust valve b1 connected to the air outlet of the exhaust fan 1 includes a first exhaust solenoid valve 4 and a second exhaust solenoid valve 5; the first exhaust solenoid valve 4 is connected to the first interface 12a of the detection connector 12; the second exhaust solenoid valve 5 is connected to the first interface 12a of the detection connector 12 through the exhaust throttle valve 6; the exhaust flow rate corresponding to the first exhaust solenoid valve 4 is greater than the exhaust flow rate corresponding to the second exhaust solenoid valve 5;

[0074] The air intake valve a1 connected to the air outlet of the air intake pump 2 includes: a first air intake solenoid valve 7; the first air intake solenoid valve 7 is connected to the first interface 12a of the detection connector 12 through the air intake throttle valve 8;

[0075] The air intake valve a1 connected to the air outlet of the air intake fan 3 includes a second air intake solenoid valve 9 ; the second air intake solenoid valve 9 is connected to the first interface 12 a of the detection connector 12 .

[0076] In this embodiment, the design of the air intake device a fully considers the flexibility under different pressure and flow requirements, and is composed of an air intake fan 3 and an air intake pump 2. The air intake fan 3 generates a continuous airflow through its high-speed rotating blades, which is suitable for test scenarios that require a large air volume but low pressure requirements. The air intake pump 2 can provide a more stable pressure output, which is suitable for tests that require precise control of the intake pressure. The gas flow rate of the air intake fan 3 is greater than the gas flow rate of the air intake pump 2.

[0077] The exhaust device b is mainly composed of an exhaust fan 1, which is responsible for quickly exhausting the gas or excess gas generated during the test to ensure the stability of the test environment. In order to more finely control the exhaust process, this embodiment also introduces an exhaust throttle valve 6, which can control the exhaust flow rate within a certain range by adjusting the opening of the valve, thereby meeting the exhaust requirements under different test conditions.

[0078] Furthermore, in the design of the exhaust valve b1, a dual solenoid valve structure is adopted, namely, a first exhaust solenoid valve 4 and a second exhaust solenoid valve 5. The two solenoid valves are connected in parallel and connected to the first interface 12a of the detection connector 12 through different paths. Among them, the first exhaust solenoid valve 4 is directly connected, which is suitable for scenes requiring rapid and large-scale exhaust, and its corresponding exhaust flow rate is relatively large. The second exhaust solenoid valve 5 is connected through the exhaust throttle valve 6, which can achieve more precise flow control while ensuring a certain exhaust volume.

[0079] Diversity and flexibility are also taken into consideration in the design of the air intake valve a1. The air outlet of the air intake pump 2 is connected to the detection system through the first air intake solenoid valve 7. In order to achieve fine-tuning of the air intake volume, the first air intake solenoid valve 7 is connected in series with the air intake throttle valve 8, which can further refine the control of the air intake flow rate. In addition, the air outlet of the air intake fan 3 is also connected to the air intake valve a1, specifically, it is directly connected to the first interface 12a of the detection connector 12 through the second air intake solenoid valve 9. This design allows the air intake fan 3 to be directly activated during the test phase where a large air volume is required and the pressure control requirements are not high, thereby improving the test efficiency.

[0080] In a specific embodiment, it also includes: a first control module for controlling the exhaust fan 1, the first exhaust solenoid valve 4 and the second exhaust solenoid valve 5;

[0081] A second control module for controlling the air intake pump 2 and the first air intake solenoid valve 7;

[0082] And a third control module for controlling the air intake fan 3 and the second air intake solenoid valve 9.

[0083] As attached Figure 2 As shown, the first control module includes: a first exhaust switch 17, a second exhaust switch 19, a first exhaust solenoid valve coil 18 and a second exhaust solenoid valve coil 20;

[0084] The first exhaust switch 17 is connected to the first exhaust solenoid valve coil 18 and the exhaust fan 1 respectively, and the first exhaust solenoid valve coil 18 is connected to the first exhaust solenoid valve 4, so as to control the exhaust fan 1 switch and the first exhaust solenoid valve coil 18 opening and closing based on the first exhaust switch 17, and then control the first exhaust solenoid valve 4 switch through the opening and closing of the first exhaust solenoid valve coil 18;

[0085] The second exhaust switch 19 is connected to the second exhaust solenoid valve coil 20 and the exhaust fan 1 respectively, and the second exhaust solenoid valve coil 20 is connected to the second exhaust solenoid valve 5, so as to control the exhaust fan 1 switch and the second exhaust solenoid valve coil 20 opening and closing based on the second exhaust switch 19, and then control the second exhaust solenoid valve 5 switch through the opening and closing of the second exhaust solenoid valve coil 20;

[0086] The second control module includes: a first air intake switch 21 and a first air intake solenoid valve coil 22; the first air intake switch 21 is connected to the first air intake solenoid valve coil 22 and the air intake pump 2, so as to control the switch of the air intake pump 2 based on the first air intake switch 21, and control the opening and closing of the first air intake solenoid valve coil 22, and then control the opening and closing of the first air intake solenoid valve 7 through the opening and closing of the first air intake solenoid valve coil 22;

[0087] The third control module includes: a second air intake switch 23 and a second air intake solenoid valve coil 24; the second air intake switch 23 is connected to the second air intake solenoid valve coil 24 and the air intake fan 3, so as to control the switch of the air intake fan 3 based on the second air intake switch 23, and control the opening and closing of the second air intake solenoid valve coil 24, and then control the switch of the second air intake solenoid valve 9 through the opening and closing of the second air intake solenoid valve coil 24.

[0088] In this embodiment, in order to achieve precise control of key components such as the exhaust fan 1, the intake pump 2 and the intake fan 3, the system is specially designed with three independent control modules: the first control module focuses on the control of the exhaust fan 1 and its related solenoid valves, the second control module is responsible for the management of the intake pump 2 and its related solenoid valves, and the third control module specifically controls the intake fan 3 and its corresponding solenoid valves.

[0089] As attached Figure 2 As shown, the first control module realizes flexible control of the exhaust fan 1 and two exhaust solenoid valves (the first exhaust solenoid valve 4 and the second exhaust solenoid valve 5) by integrating the first exhaust switch 17 and the second exhaust switch 19. Specifically, the first exhaust switch 17 not only directly controls the start and stop of the exhaust fan 1, but also indirectly controls the switch state of the first exhaust solenoid valve 4 by controlling the on and off of the first exhaust solenoid valve coil 18, thereby adjusting the exhaust flow rate according to the test requirements. Similarly, the second exhaust switch 19 also adopts the same control method to independently control the second exhaust solenoid valve 5, but it is achieved by controlling the second exhaust solenoid valve coil 20. This design allows the opening degree of the two exhaust solenoid valves to be adjusted individually or simultaneously according to actual needs during the test process to achieve the best exhaust effect.

[0090] The second control module is composed of the first air intake switch 21 and the first air intake solenoid valve coil 22. The first air intake switch 21 is the control core, which is responsible for starting or stopping the air intake pump 2 and controlling the switch state of the first air intake solenoid valve 7 by controlling the on and off of the first air intake solenoid valve coil 22. This integrated design simplifies the control process and improves the response speed of the system.

[0091] The third control module is similar in structure to the second control module, but is targeted at the air intake fan 3 and its corresponding second air intake solenoid valve 9. The second air intake switch 23 also plays a dual role, controlling the switch of the air intake fan 3 and affecting the opening and closing of the second air intake solenoid valve 9 by controlling the on and off of the second air intake solenoid valve coil 24. This design makes the control of the air intake system more flexible and can meet the air intake requirements in different test scenarios.

[0092] In a specific embodiment, as shown in the attached Figure 2 As shown, it also includes a first relay coil 36a, a first relay normally closed contact 36b, a second relay coil 37a and a second relay normally closed contact 37b;

[0093] The first relay coil 36a is connected to the first exhaust switch 17 and the second exhaust switch 19 respectively, so that when the first exhaust switch 17 or the second exhaust switch 19 is closed, the first relay coil 36a is turned on by the power supply; the first relay coil 36a is arranged correspondingly to the first relay normally closed contact 36b, so that when the first relay coil 36a is turned on by the power supply, the first relay normally closed contact 36b is driven to be opened; the first relay normally closed contact 36b is arranged on the power supply line of the intake fan 3, so that when the first relay normally closed contact 36b is opened, the intake fan 3 is controlled to be turned off;

[0094] The second relay coil 37a is connected to the second air intake switch 23, so that when the second air intake switch 23 is closed, the second relay coil 37a is turned on; the second relay coil 37a is set correspondingly to the second relay normally closed contact 37b, so that when the second relay coil 37a is turned on, the second relay normally closed contact 37b is driven to disconnect, and the second relay normally closed contact 37b is set on the power supply line of the exhaust fan, so that when the second relay normally closed contact 37b is disconnected, the exhaust fan 1 is controlled to be turned off. The simultaneous operation of the intake fan 3 and the exhaust fan 1 is effectively avoided, which not only improves the safety of the system, but also avoids performance problems or damage that may be caused by the simultaneous operation of the fans.

[0095] Furthermore, one or more of the first exhaust switch 17, the second exhaust switch 19, the first air inlet switch 21 and the second air inlet switch 23 include touch-sensitive switches. Such touch-sensitive switches trigger the on or off of the switch by identifying the user's touch action, without the need for physical pressing or rotation, making the operation simpler and more intuitive.

[0096] In a specific embodiment, as shown in the attached Figure 4 As shown, it also includes: a box A;

[0097] An air intake device a, an air intake valve a1, an exhaust device b, an exhaust valve b1, a pressure control switch 10, a first pressure relief valve 11, a detection joint 12, a gas buffer chamber 14, a second pressure relief valve 15 and a pressure gauge 16 are all arranged in the box A.

[0098] In this embodiment, in order to ensure that the components of the self-rescuer detector are compactly arranged, easy to operate and maintain, all key components are cleverly integrated into a sturdy and durable box A. Figure 4 As shown, this box A not only provides a protective shell for the detector, but also realizes the orderly arrangement and efficient coordination between the components through reasonable internal structure design. In this embodiment, the box A is a plastic safety protection box with no openings on the outside. It can be waterproof, moisture-proof and dust-proof after being covered with a lid.

[0099] In a specific embodiment, as shown in the attached Figure 3 As shown, the box A also includes: a first gas mass flow meter 25, a first flow meter filter 26, a first detection interface 27, a first flow detection connector 28 and a first gas interface 29 for connecting the self-rescuer to be tested, which are connected in sequence;

[0100] It also includes: a second gas mass flow meter 30, a second flow meter filter 31, a second detection interface 32, a second flow detection connector 33 and a second gas interface 34 for connecting the self-rescuer to be tested, which are connected in sequence.

[0101] In this embodiment, as shown in the attached Figure 3 As shown, the design of box A fully considers the comprehensiveness and accuracy of the test process. In order to achieve a multi-dimensional evaluation of the performance of the self-rescuer, two independent gas flow and quality monitoring systems are specially added to box A. The first gas mass flowmeter 25 can accurately measure the gas mass flow passing through it, providing a reliable basis for subsequent test data analysis; the first flowmeter filter 26 is installed after the flowmeter to filter out impurities and particulate matter in the gas and protect subsequent components from contamination; the first detection interface 27 provides a standardized connection point for easy docking with the test equipment; the first flow detection connector 28 ensures the stability and accuracy of the gas during transmission, further reducing flow loss and error; the first gas interface 29 is specially designed to connect the self-rescuer to be tested, so that the entire test process can proceed smoothly.

[0102] At the same time, in order to increase the flexibility and reliability of the test, a second completely independent gas flow and quality monitoring system is also equipped on the box A. The system includes a second flow meter filter 31, a second detection interface 32, and a second flow detection connector 33 connected in sequence, each of which plays a similar role to the corresponding components in the first system. The second gas interface 34 serves as the terminal of the system and is also used to connect the self-rescuer to be tested, so that the tester can choose any interface for testing as needed, or connect two self-rescuers at the same time for comparative testing.

[0103] This design not only improves the comprehensiveness and accuracy of the test, but also enhances the reliability and flexibility of the test through the dual-system parallel approach. At the same time, the close connection and orderly arrangement between the various components also ensure the smooth and efficient completion of the test process.

[0104] In a specific embodiment, it also includes: a power switch 35; one end of the power switch 35 is connected to an external power source, and the other end of the power switch 35 is connected to the pressure control switch 10;

[0105] The barometer 16, the first gas mass flow meter 25 and the second gas mass flow meter 30 are connected between the power switch 35 and the external power supply. In this embodiment, in order to ensure that the self-rescuer detector can operate stably and safely, a power switch 35 is specially added as an important component of the power management of the entire system.

[0106] In a specific embodiment, the detection joint 12 includes: a pressure detection joint, a pressure detection pressure measuring joint and a pressure detection air supply joint connected in sequence;

[0107] The pressure detection joint is provided with a first interface 12a; the pressure detection pressure measuring joint is provided with a second interface 12b; and the pressure detection air supply joint is provided with a third interface 12c.

[0108] In this embodiment, the detection connector 12 is designed as an integrated, multifunctional component, which aims to realize the precise measurement and regulation of gas pressure parameters during the performance testing of the self-rescuer. It cleverly integrates the three functions of pressure detection, pressure measurement and gas supply into one. Through the precise layout of its internal structure, it realizes seamless connection and efficient coordination between various functions.

[0109] Specifically, the detection joint 12 is composed of three key parts, namely, a pressure detection joint, a pressure detection pressure measuring joint, and a pressure detection gas supply joint, which are connected in sequence. This series design not only simplifies the installation process, but also ensures that the gas can maintain a stable flow state when flowing through each joint, thereby improving the accuracy of the detection.

[0110] In a specific embodiment, the first pressure relief valve 11 includes an automatic pressure relief valve or a manual pressure relief valve, the second pressure relief valve 15 includes an automatic pressure relief valve or a manual pressure relief valve, and the pressure gauge 16 includes an electronic micro pressure gauge.

[0111] In this embodiment, the first pressure relief valve 11 and the second pressure relief valve 15 can be installed with automatic pressure relief valves or manual pressure relief valves according to actual needs.

[0112] The automatic pressure relief valve, with its built-in intelligent sensing system, can monitor the gas pressure status inside the detection system in real time. Once the pressure is detected to exceed the preset safety threshold, the automatic pressure relief valve will immediately start to quickly release excess gas, thereby effectively preventing safety accidents caused by overpressure. This automated design not only improves the safety of the system, but also reduces the burden on operators, making the entire detection process more convenient and efficient.

[0113] In contrast, manual pressure relief valves focus more on directness and controllability of operation. They are usually equipped with easy-to-operate handles or knobs, allowing operators to manually adjust the speed and amount of pressure relief according to actual needs. In certain special working conditions, such as when the pressure relief process needs to be precisely controlled to collect data or perform fault diagnosis, the advantages of manual pressure relief valves are particularly obvious.

[0114] In addition, the barometer 16, as an indispensable part of the detection system, is also endowed with a high degree of accuracy and reliability. In this embodiment, the barometer 16 adopts advanced electronic micro-manometer technology. The electronic micro-manometer not only has the advantages of intuitive reading and simple operation of the traditional barometer, but also realizes digital measurement and display of gas pressure through built-in sensors and microprocessors. This digital measurement method not only improves the accuracy and stability of the measurement, but also makes data recording, analysis and transmission more convenient and fast. At the same time, the electronic micro-manometer also has advanced functions such as automatic calibration and overload protection, which further ensures the accuracy of the measurement results and the long-term stable operation of the system.

[0115] The utility model arranges a plurality of air intake devices in the self-rescuer detector, and arranges an independent switch for each air intake device, so that large-flow air intake or small-flow air intake can be realized simultaneously, and the air intake speed is fast, the operation is simple, and the detection efficiency is high.

[0116] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A detector for a self-rescuer, characterized in that: include: At least one air intake device, an air intake valve, at least one air exhaust device, an air exhaust valve, a pressure control switch for controlling the power on and off of the air intake device, the air intake valve, the air exhaust device and the air exhaust valve, a first pressure relief valve, a detection joint, a gas buffer chamber, a second pressure relief valve and a pressure gauge; wherein: The air outlet of the air intake device is connected to the air intake valve used to adjust the sealing degree of the air intake of the air intake device; The air inlet of the exhaust device is connected to the exhaust valve used to adjust the sealing degree of the exhaust port of the exhaust device; The air inlet valve and the air exhaust valve are both connected to the first interface of the detection connector; The pressure control switch and the first pressure relief valve are connected to the pipeline between the intake valve and the exhaust valve and the detection joint; The second interface of the detection connector is connected to the self-rescuer to be detected; the third interface of the detection connector is respectively connected to the gas buffer chamber, the second pressure relief valve and the pressure gauge; the first interface, the second interface and the third interface of the detection connector are connected.

2. A detector for a self-rescuer according to claim 1, characterized in that: The air intake device includes an air intake fan and an air intake pump, and the exhaust device includes an exhaust fan; Also includes: an exhaust throttle valve and an intake throttle valve; The exhaust valve connected to the air outlet of the exhaust fan includes a first exhaust solenoid valve and a second exhaust solenoid valve; the first exhaust solenoid valve is connected to the first interface of the detection joint; the second exhaust solenoid valve is connected to the first interface of the detection joint through the exhaust throttle valve; the exhaust flow rate corresponding to the first exhaust solenoid valve is greater than the exhaust flow rate corresponding to the second exhaust solenoid valve; The air intake valve connected to the air outlet of the air intake pump includes: a first air intake solenoid valve; the first air intake solenoid valve is connected to the first interface of the detection joint through the air intake throttle valve; The air intake valve connected to the air outlet of the air intake fan includes a second air intake solenoid valve; the second air intake solenoid valve is connected to the first interface of the detection connector.

3. A detector for a self-rescuer according to claim 2, characterized in that: Also includes: a first control module for controlling the exhaust fan, the first exhaust solenoid valve and the second exhaust solenoid valve; a second control module for controlling the air intake pump and the first air intake solenoid valve; And a third control module for controlling the air intake fan and the second air intake solenoid valve.

4. A detector for a self-rescuer according to claim 3, characterized in that: The first control module includes: a first exhaust switch, a second exhaust switch, a first exhaust solenoid valve coil and a second exhaust solenoid valve coil; The first exhaust switch is connected to the first exhaust solenoid valve coil and the exhaust fan respectively, and the first exhaust solenoid valve coil is connected to the first exhaust solenoid valve, so as to control the exhaust fan switch and the opening and closing of the first exhaust solenoid valve coil based on the first exhaust switch, and then control the first exhaust solenoid valve switch through the opening and closing of the first exhaust solenoid valve coil; The second exhaust switch is connected to the second exhaust solenoid valve coil and the exhaust fan respectively, and the second exhaust solenoid valve coil is connected to the second exhaust solenoid valve, so as to control the exhaust fan switch and the opening and closing of the second exhaust solenoid valve coil based on the second exhaust switch, and then control the second exhaust solenoid valve switch through the opening and closing of the second exhaust solenoid valve coil; The second control module includes: a first air intake switch and a first air intake solenoid valve coil; the first air intake switch is connected to the first air intake solenoid valve coil and the air intake pump, so as to control the switch of the air intake pump based on the first air intake switch, and control the opening and closing of the first air intake solenoid valve coil, and then control the switch of the first air intake solenoid valve through the opening and closing of the first air intake solenoid valve coil; The third control module includes: a second air intake switch and a second air intake solenoid valve coil; the second air intake switch is connected to the second air intake solenoid valve coil and the air intake fan to control the switch of the air intake fan based on the second air intake switch, and control the opening and closing of the second air intake solenoid valve coil, and then control the second air intake solenoid valve switch by opening and closing of the second air intake solenoid valve coil.

5. A detector for a self-rescuer according to claim 4, characterized in that: Also includes a first relay coil, a first relay normally closed contact, a second relay coil and a second relay normally closed contact; The first relay coil is connected to the first exhaust switch and the second exhaust switch respectively, so that when the first exhaust switch or the second exhaust switch is closed, the first relay coil is powered on; the first relay coil is correspondingly arranged to the normally closed contact of the first relay, so that when the first relay coil is powered on, the normally closed contact of the first relay is driven to be opened; The normally closed contact of the first relay is arranged on the power supply circuit of the air intake fan, so that when the normally closed contact of the first relay is disconnected, the air intake fan is controlled to be turned off; The second relay coil is connected to the second air intake switch, so that when the second air intake switch is closed, the second relay coil is powered on; the second relay coil is arranged corresponding to the normally closed contact of the second relay, so that when the second relay coil is powered on, the normally closed contact of the second relay is driven to be opened, and the normally closed contact of the second relay is arranged on the power supply line of the exhaust fan, so that when the normally closed contact of the second relay is opened, the exhaust fan is controlled to be closed; One or more of the first exhaust switch, the second exhaust switch, the first air intake switch, and the second air intake switch include touch-sensitive switches.

6. A detector for a self-rescuer according to any one of claims 1 to 5, characterized in that: Also includes: Box; The air intake device, the air intake valve, the exhaust device, the exhaust valve, the pressure control switch, the first pressure relief valve, the detection joint, the gas buffer chamber, the second pressure relief valve and the pressure gauge are all arranged in the box.

7. A detector for a self-rescuer according to claim 6, characterized in that: The box body also includes: a first gas mass flow meter, a first flow meter filter, a first detection interface, a first flow detection joint and a first gas interface for connecting the self-rescuer to be tested, which are connected in sequence; It also includes: a second gas mass flow meter, a second flow meter filter, a second detection interface, a second flow detection connector and a second gas interface for connecting the self-rescuer to be tested, which are connected in sequence.

8. A detector for a self-rescuer according to claim 7, characterized in that: Also includes: Power switch; One end of the power switch is connected to an external power source, and the other end of the power switch is connected to the pressure control switch; The barometer, the first gas mass flow meter and the second gas mass flow meter are connected between the power switch and an external power supply.

9. A detector for a self-rescuer according to claim 1, characterized in that: The detection joint comprises: a pressure detection joint, a pressure detection pressure measuring joint and a pressure detection air supply joint which are connected in sequence; The pressure detection joint is provided with the first interface; the pressure detection pressure measuring joint is provided with the second interface; the pressure detection air supply joint is provided with the third interface.

10. A detector for a self-rescuer according to claim 1, characterized in that: The first pressure relief valve comprises an automatic pressure relief valve or a manual pressure relief valve, the second pressure relief valve comprises an automatic pressure relief valve or a manual pressure relief valve, and the pressure gauge comprises an electronic micro pressure gauge.

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