Auxiliary device for temperature sensing test of rail vehicle

Abstract

The utility model discloses a kind of rail vehicle temperature sensing test auxiliary devices, it includes hot air gun connecting sleeve, transmission heat hot air gun connecting sleeve is connected with waste exhaust heating sleeve or smoke sensing probe heating sleeve by high-temperature corrugated pipe;Transmission heat hot air gun connecting sleeve includes the connecting head being connected with transmission heat high-temperature corrugated pipe, connecting sleeve is inserted on hot air gun and extended on transmission heat connecting head, transmission heat waste exhaust heating sleeve includes square heating cover, square heating cover is connected with the connecting plug of transmission heat high-temperature corrugated pipe, transmission heat smoke sensing probe heating sleeve includes the protective cover being sleeved on smoke sensing probe, transmission heat protective cover is connected with the dismounting head of transmission heat high-temperature corrugated pipe, square heating cover and protective cover inside are respectively embedded with temperature sensor, transmission heat temperature sensor is connected with temperature control unit acquisition platform, for monitoring the real-time temperature condition of transmission heat waste exhaust heating sleeve or transmission heat smoke sensing probe heating sleeve.

Description

Technical Field

[0001] This utility model belongs to the field of rail transit vehicle testing technology, specifically relating to an auxiliary device for assisting in temperature sensing tests of intercity vehicle systems such as smoke and fire alarms, passenger compartment air conditioning, and battery protection. Background Technology

[0002] Key systems in intercity vehicles, such as smoke and fire alarms, passenger compartment air conditioning, and battery protection, all rely on a "temperature-critical start" logic design (e.g., smoke and fire tests require temperature sensors to trigger alarm thresholds, winter air conditioning requires high-temperature environments to trigger automatic cooling modes, and batteries require over-temperature triggering protection alarms). However, during vehicle commissioning, the ambient temperature cannot simulate the specific temperature conditions required for equipment operation, directly causing the equipment to fail to start normally, halting core function verification work, and affecting commissioning progress and vehicle delivery efficiency. The current solution of "directly heating the temperature probe with a hot air gun" has multiple problems due to the mismatch between equipment characteristics and heating method, resulting in a significant increase in test time, specifically: 1. Poor hot air coverage efficiency and uneven local heating. The hot air gun nozzle has a limited airflow range (usually only 5-10mm in diameter), while some test devices have large temperature sensors with irregularly shaped heating surfaces (e.g., cylindrical, polyhedral). During actual heating, only the local area of ​​the sensor facing the nozzle can contact the hot air, while the remaining areas cannot effectively absorb heat, resulting in a slow overall temperature rise of the sensor. Repeated adjustments to the nozzle position are required, further increasing operation time. 2. Physical barriers and material properties exacerbate heat transfer problems. Protective covers: Most temperature sensors have metal or plastic protective covers (such as dust covers for smoke and fire temperature sensors and impact-resistant housings for battery sensors). Hot air is blocked by these covers and cannot directly reach the probe; the cover must be heated first before heat is indirectly conducted, resulting in significant heat loss. Poor thermal conductivity materials: Some sensor housings or probes are made of materials with low thermal conductivity (thermal conductivity <10W / (m·K)), such as ceramics or high-temperature resistant plastics. Even if the surface is heated to near the target temperature (e.g., 90℃) by hot air, heat cannot quickly penetrate to the internal temperature-sensing element, resulting in an actual internal temperature far lower than the surface temperature. Continuous blowing for more than 30 minutes is required to bring the internal temperature up to standard, making the test extremely time-consuming. 3. Lack of constant temperature control easily leads to test deviations. The output temperature of the hot air gun is greatly affected by airflow and distance, making it impossible to stably maintain the target temperature (for example, if precise heating to 70℃ is required to trigger a smoke alarm, the actual temperature may fluctuate between 30-75℃). Temperature fluctuations not only prolong the time to achieve "stable compliance," but may also damage sensors due to localized overheating or cause equipment misjudgments due to insufficient temperature, affecting the accuracy of functional verification. Therefore, developing an auxiliary tooling that combines rapid assembly and disassembly, multi-test adaptability, and precise temperature control has become a key requirement for improving the efficiency of temperature-sensing tests for intercity vehicles. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a test auxiliary device that is quick to assemble and disassemble, adaptable to multiple tests, and enables rapid replacement of different models of temperature sensors.

[0004] This utility model discloses an auxiliary device for temperature sensing testing of rail vehicles, comprising a hot air gun connecting sleeve, which is connected to a waste discharge heating sleeve or a smoke detector heating sleeve via a high-temperature resistant corrugated pipe; the hot air gun connecting sleeve includes a connector for connection to the high-temperature resistant corrugated pipe, with a connecting sleeve extending from the connector for insertion into the hot air gun, and a knob-type locking component provided inside the connecting sleeve; the waste discharge heating sleeve includes a square heating cover, with a connector for connection to the high-temperature resistant corrugated pipe connected to the square heating cover; the smoke detector heating sleeve includes a protective cover fitted onto the smoke detector, with a disassembly / removal head for connection to the high-temperature resistant corrugated pipe connected to the protective cover, and a strip groove for easy disassembly; both the square heating cover and the protective cover are of a flexible fit design, and temperature sensors are embedded on their inner sides, respectively; the temperature sensors are connected to a temperature control unit acquisition platform for monitoring the real-time temperature of the waste discharge heating sleeve or the smoke detector heating sleeve.

[0005] According to some embodiments of this utility model, the temperature sensor is a platinum resistance temperature sensor.

[0006] According to some embodiments of this utility model, the knob-type locking member is a snap-fit ​​protrusion symmetrically arranged inside the connecting sleeve.

[0007] According to some embodiments of this utility model, the strip groove consists of two lines, arranged symmetrically at the top and bottom.

[0008] According to some embodiments of this utility model, a display screen is provided on the temperature control unit acquisition platform.

[0009] According to some embodiments of this utility model, the waste discharge heating jacket and the smoke detector heating jacket are made of heat-resistant silicone material.

[0010] According to some embodiments of this utility model, the thickness of the waste discharge heating jacket and the smoke detector heating jacket is 2mm.

[0011] According to some embodiments of this utility model, the temperature control unit data acquisition platform is equipped with an overheat protection component.

[0012] According to some embodiments of the present invention, the protective cover and the disassembly / removal head are positioned at a 45° angle.

[0013] According to some embodiments of this utility model, the connector and plug are provided with buckles for quick installation and removal of the high-temperature resistant corrugated pipe.

[0014] This utility model has at least the following beneficial effects: The product includes a fitted high-efficiency heating and quick-release adapter connection structure. The fitted heating component (including a waste discharge heating sleeve or a smoke detector heating sleeve) is designed with heat-resistant silicone material to achieve encapsulation and heating of the sensor, rapidly transferring heat. The quick-release structure uses a snap-fit ​​connection, supporting tool-free replacement of multiple specifications of heating components. After applying this fixture, the single-group temperature sensing test time is shortened from over 5 minutes to within 30 seconds, improving overall efficiency by over 60% and increasing equipment reuse rate by 90%. It can be widely adapted to the temperature sensing function verification of intercity vehicle smoke and fire alarms, air conditioning, battery protection, and other systems, significantly accelerating vehicle debugging and factory delivery efficiency.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of the smoke detector of this utility model; Figure 2 This is a schematic diagram of the structure for air conditioner waste discharge according to this utility model; Figure 3 This is a schematic diagram of the heating sleeve structure for the smoke detector probe of this utility model; Figure 4 This is a schematic diagram of the hot air gun connecting sleeve structure of this utility model; Figure 5 This is a cross-sectional view of the waste discharge heating jacket of this utility model. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] Reference Figure 1 ~ Figure 2 A temperature sensing test auxiliary device for rail vehicles includes a hot air gun connecting sleeve 1, which is connected to a waste discharge heating sleeve 3 or a smoke detector heating sleeve 4 via a high-temperature resistant corrugated pipe 2.

[0022] Reference Figure 1 This is a structure for smoke detectors. The heating sleeve is mainly used to heat the smoke temperature alarm detector during smoke tests. The hot air gun connecting sleeve 1 is connected to the smoke detector heating sleeve 4 via a high-temperature resistant corrugated pipe 2. The use of the high-temperature resistant corrugated pipe 2 allows for 360° rotation between the hot air gun connecting sleeve 1 and the smoke detector heating sleeve 4, ensuring that the hot air gun can fit snugly against the smoke detector heating sleeve 4 at different installation angles, avoiding heating misalignment caused by installation position deviation. (Refer to...) Figure 4 The hot air gun connecting sleeve 1 includes a connector 11 that connects to the high-temperature resistant corrugated pipe 2. A connecting sleeve 12 extends from the connector 11 and is inserted into the hot air gun. A knob-type locking element 13 is provided inside the connecting sleeve 12. The knob-type locking element 13 consists of symmetrically arranged locking protrusions inside the connecting sleeve 12, a design that allows for a secure assembly with the hot air gun. (Refer to...) Figure 3 The smoke detector heating sleeve 4 includes a protective cover 41 fitted onto the smoke detector. The protective cover 41 is connected to a disassembly / removal head 42 for connection to the high-temperature corrugated pipe 2. The protective cover 41 has two strip grooves 43 for easy disassembly. These two grooves 43 are symmetrically arranged, allowing the protective cover 41 to be directly fitted onto the smoke and fire temperature alarm detector, making installation and disassembly more convenient. The protective cover 41 and the disassembly / removal head 42 are positioned at a 45° angle, providing sufficient operating space during installation and disassembly to prevent interference between them and facilitate operation.

[0023] Reference Figure 2This is a structure for air conditioner waste discharge. The heating jacket is mainly used to heat the square waste discharge temperature sensor during air conditioner waste discharge testing. Unlike the structure for a smoke detector, it uses a waste discharge heating jacket 3 instead of a smoke detector heating jacket 4. The hot air gun connecting sleeve 1 is connected to the waste discharge heating jacket 3 via a high-temperature resistant corrugated pipe 2. (Refer to...) Figure 5 The waste discharge heating sleeve 3 includes a square heating cover 31, which is directly fitted onto the square waste discharge temperature sensor. The square heating cover 31 is connected to a connector 32 for connection with the high-temperature resistant corrugated pipe 2. The waste discharge heating sleeve 3 and the smoke detector heating sleeve 4 are both 2mm thick.

[0024] This product has clips 5 inside the connector 11 and plug 32 for quick installation and removal of the high-temperature resistant corrugated pipe 2. During installation, simply press the clips 5 on the connector 11 or plug 32 onto the high-temperature resistant corrugated pipe 2, and the clips 5 will automatically lock and fix it. During disassembly, pressing the clips 5 will quickly remove the high-temperature resistant corrugated pipe 2. No tools are required throughout the process, and the replacement time for a single set is ≤30 seconds.

[0025] The waste discharge heating sleeve 3 and the smoke detector heating sleeve 4 are designed with a flexible fit and are made of heat-resistant silicone material with a heat distortion temperature as high as 209℃. Temperature sensors are embedded inside the square heating cover 31 and the protective cover 41 to ensure temperature transmission accuracy and stability. The temperature sensors are connected to the temperature control unit's data acquisition platform to monitor the real-time temperature of the waste discharge heating sleeve 3 or the smoke detector heating sleeve 4. To ensure accurate temperature monitoring, the temperature sensors are platinum resistance temperature sensors with an accuracy of ±0.1℃. The temperature control unit's data acquisition platform is equipped with a display screen to monitor the temperature of the sensor's contact surface in real time and transmit the data to the display screen. Furthermore, the temperature control unit's data acquisition platform is equipped with an overheat protection component to avoid sensor damage and burn risks, thus improving operational safety.

[0026] This product includes a high-efficiency, close-fitting heating element and a quick-release adapter connection structure. The close-fitting heating components (including the exhaust heating sleeve 3 or the smoke detector heating sleeve 4) are designed with heat-resistant silicone material to wrap and heat the sensor, enabling rapid heat transfer. The quick-release structure uses a snap-fit ​​connection 5, supporting tool-less replacement of multiple heating components. After applying this fixture, the test time for a single temperature sensor is reduced from more than 5 minutes to less than 30 seconds, improving overall efficiency by more than 60% and increasing equipment reuse rate by 90%. It can be widely adapted to the temperature sensing function verification of intercity vehicle smoke and fire alarms, air conditioning, battery protection, and other systems, significantly accelerating vehicle commissioning and factory delivery efficiency.

[0027] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An auxiliary device for temperature sensing testing of rail vehicles, characterized in that: The device includes a hot air gun connecting sleeve (1), which is connected to a waste discharge heating sleeve (3) or a smoke detector heating sleeve (4) via a high-temperature resistant corrugated pipe (2); the hot air gun connecting sleeve (1) includes a connector (11) connected to the high-temperature resistant corrugated pipe (2), and a connecting sleeve (12) extending from the connector (11) and inserted into the hot air gun; a knob-type locking element (13) is provided inside the connecting sleeve (12); the waste discharge heating sleeve (3) includes a square heating cover (31), and a connecting sleeve (31) connected to the high-temperature resistant corrugated pipe (2) is attached to the square heating cover (31). The connector (32) and the smoke detector heating sleeve (4) include a protective cover (41) fitted onto the smoke detector. The protective cover (41) is connected to a disassembly head (42) for connecting to the high-temperature corrugated pipe (2). The protective cover (41) is provided with a strip groove (43) for easy disassembly. The square heating cover (31) and the protective cover (41) are both flexible and fitted. Temperature sensors are also embedded in their inner sides. The temperature sensors are connected to the temperature control unit acquisition platform and are used to monitor the real-time temperature of the waste discharge heating sleeve (3) or the smoke detector heating sleeve (4).

2. The auxiliary device for temperature sensing testing of rail vehicles according to claim 1, characterized in that: The temperature sensor is a platinum resistance temperature sensor.

3. The auxiliary device for temperature sensing testing of rail vehicles according to claim 1, characterized in that: The knob-type locking component (13) is a snap-fit ​​boss that is symmetrically arranged inside the connecting sleeve (12).

4. The auxiliary device for temperature sensing testing of rail vehicles according to claim 1, characterized in that: The strip groove (43) consists of two sections, arranged symmetrically at the top and bottom.

5. The auxiliary device for temperature sensing testing of rail vehicles according to claim 1, characterized in that: The temperature control unit's data acquisition platform is equipped with a display screen.

6. The auxiliary device for temperature sensing testing of rail vehicles according to claim 1, characterized in that: The waste discharge heating jacket (3) and the smoke detector heating jacket (4) are made of heat-resistant silicone material.

7. The auxiliary device for temperature sensing testing of rail vehicles according to claim 1, characterized in that: The thickness of the waste discharge heating sleeve (3) and the smoke detector heating sleeve (4) is 2mm.

8. The auxiliary device for temperature sensing testing of rail vehicles according to claim 1, characterized in that: The temperature control unit's data acquisition platform is equipped with an overheat protection component.

9. The auxiliary device for temperature sensing testing of rail vehicles according to claim 1, characterized in that: The protective cover (41) and the disassembly head (42) are positioned at a 45° angle.

10. The auxiliary device for temperature sensing testing of rail vehicles according to claim 1, characterized in that: The connector (11) and plug (32) are provided with buckles (5) for quick installation and removal of the high-temperature resistant corrugated pipe (2).

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