High-speed rail bullet train smoke and fire sensor testing device

Abstract

The utility model relates to a high-speed rail bullet train smoke and fire sensor testing device, which comprises a shell, a corrugated pipe and a smoke exhaust nozzle, the lower part of the shell is provided with a bottom frame, and the upper part is provided with an upper cover; an air suction fan and an air exhaust fan are arranged in a space surrounded by the shell between the bottom frame and the upper cover; a round hole for fixing a smoke pen is formed in the center of the bottom frame; the air suction fan is used for sucking smoke mixed air into the corrugated pipe and discharging the smoke mixed air through the smoke discharging nozzle; and the exhaust fan is used for pumping smoke in the closed space in the top plate back to the smoke exhaust nozzle, and the smoke is exhausted through the corrugated pipe. According to the high-speed rail bullet train smoke and fire sensor testing device, smoke generated by the smoke pen can accurately reach the interior of the smoke and fire sensor, and the alarm efficiency is improved; meanwhile, after a single sensor is tested, smoke around the sensor can be rapidly removed, the alarm state is eliminated, and the test efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-speed train sets, and in particular to a high-speed train pyrotechnic sensor test device. Background Art

[0002] Since high-speed EMUs run at high speeds, the consequences of a fire are serious. Therefore, all types of EMUs in China are equipped with a complete fire alarm system. The system realizes fire alarm for the entire train through smoke sensors installed in electrical cabinets, inside carriages and other parts.

[0003] In order to fully verify the fire alarm system, all pyrotechnic sensors need to be tested during the test phase before the EMU is newly built or repaired before leaving the factory to ensure the integrity and availability of their functions. When the pyrotechnic sensor detects smoke, it can send an alarm signal to the system host, thereby realizing the alarm function.

[0004] The current test method is to use a smoke pen. The smoke produced by lighting the smoke pen naturally drifts to the smoke sensor, thereby triggering the alarm function. Due to design and structural reasons, the smoke sensor in the passenger compartment of the EMU is installed inside the roof, and the smoke can enter the sensor only after passing through the grille of the roof. The smoke pen needs to produce a large amount of smoke to pass through the grille to reach the sensor, and only one sensor can be tested at a time. The test time is long, and the smoke dissipates slowly after the test is completed. The alarm cannot be eliminated, delaying the next sensor test. Utility Model Content

[0005] The utility model aims to solve the technical problems in the prior art and provides a high-speed train pyrotechnic sensor test device.

[0006] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0007] A high-speed train pyrotechnic sensor test device comprises: a housing, a bellows and a smoke exhaust nozzle connected in sequence;

[0008] A bottom frame is provided at the lower part of the shell, and an upper cover is provided at the upper part; an air suction fan and an air exhaust fan are provided in the space surrounded by the shell between the bottom frame and the upper cover;

[0009] The center of the bottom frame is provided with a circular hole for fixing the smoke pen;

[0010] The suction fan is used to suck smoke and air mixed into the bellows and discharge them from the smoke exhaust nozzle;

[0011] The exhaust fan is used to draw smoke in the enclosed space in the top plate back to the smoke exhaust nozzle and discharge it through the bellows.

[0012] In the above technical solution, a circular hole is provided in the center of the upper cover for installing the bellows.

[0013] In the above technical solution, a sealing rubber ring is installed on the upper part of the smoke exhaust nozzle to prevent smoke loss.

[0014] In the above technical solution, a rubber pad is provided at the circular hole in the center of the bottom frame.

[0015] In the above technical solution, the housing is provided with a suction switch and an exhaust switch for controlling the operation of the suction fan and the exhaust fan, respectively.

[0016] In the above technical solution, the bellows is made of rubber.

[0017] In the above technical solution, the smoke exhaust nozzle is made of plastic.

[0018] In the above technical solution, a battery compartment is installed on one side of the housing, and the battery compartment is used to provide power to the fan and the control circuit;

[0019] A handle is installed on the other side of the housing opposite to the battery compartment, and the handle is used to facilitate the operator to hold the operation with one hand;

[0020] An air suction button and an air exhaust button are arranged on the outside of the handle, which are used to control the operation of the air suction fan and the air exhaust fan respectively.

[0021] The utility model has the following beneficial effects:

[0022] The utility model of the high-speed train pyrotechnic sensor test device can make the smoke generated by the smoke pen accurately reach the inside of the pyrotechnic sensor, thereby improving the alarm efficiency; at the same time, after the single sensor test is completed, the smoke around the sensor can be quickly cleared to eliminate the alarm state, thereby greatly improving the test efficiency.

[0023] After using the high-speed train pyrotechnic sensor test device of the utility model, due to the existence of the suction fan, the smoke can be forced to flow, the smoke density can be increased, and the test time can be reduced. At the same time, the designed smoke exhaust nozzle can gather the smoke and reduce the smoke loss.

[0024] Due to the presence of the smoke exhaust fan, after the test is completed, the smoke inside the top plate and the enclosed space around the smoke sensor can be quickly exhausted, so that the smoke sensor stops alarming quickly, thereby improving the test efficiency.

[0025] The utility model provides a high-speed train pyrotechnic sensor test device, wherein the control button is arranged on the handle, and the time for air suction and exhaust is set, thereby reducing the difficulty of the test; and the variable diameter length of the smoke exhaust nozzle is lengthened, thereby facilitating the test for personnel of different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] Figure 1 The utility model is a schematic diagram of the structure of the shell of the high-speed train pyrotechnic sensor test device.

[0028] Figure 2 The utility model is a schematic diagram of the structure of the upper cover of the high-speed train pyrotechnic sensor test device.

[0029] Figure 3 The utility model is a schematic diagram of the structure of the bottom frame of the high-speed train pyrotechnic sensor test device.

[0030] Figure 4 The utility model is a schematic diagram of the structure of the air intake fan and the air exhaust fan of the high-speed train pyrotechnic sensor test device.

[0031] Figure 5 The utility model is a schematic diagram of the structure of the bellows of the high-speed train pyrotechnic sensor test device.

[0032] Figure 6 The utility model is a schematic diagram of the structure of the smoke exhaust nozzle of the high-speed train pyrotechnic sensor test device.

[0033] Figure 7 The utility model is a schematic diagram of the structure of the sealing rubber ring of the high-speed train pyrotechnic sensor test device.

[0034] Figure 8 The utility model is a schematic diagram of the structure of the rubber pad of the high-speed train pyrotechnic sensor test device.

[0035] Fig. 9 The three-dimensional structure schematic diagram of the high-speed train pyrotechnic sensor test device of the utility model is shown in FIG.

[0036] Fig.10 The utility model is a perspective structural diagram of a high-speed train pyrotechnic sensor test device.

[0037] The reference numerals in the figures indicate:

[0038] 1-housing; 2-upper cover; 3-bottom frame; 4-suction fan; 5-exhaust fan; 6-bellows; 7-smoke exhaust nozzle; 8-sealing rubber ring; 9-rubber pad. DETAILED DESCRIPTION

[0039] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments 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.

[0040] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. The present utility model is further described in detail below in conjunction with the accompanying drawings.

[0041] like Figure 1-10 As shown, the high-speed train pyrotechnic sensor test device of the utility model comprises: a housing 1, an upper cover 2, a bottom frame 3, an air suction fan 4, an air exhaust fan 5, a bellows 6, an exhaust nozzle 7, a sealing rubber ring 8 and a rubber pad 9. Among them,

[0042] The housing 1 is a rectangular parallelepiped, the exterior of which is made of aluminum alloy and is through-through from top to bottom.

[0043] The bottom frame 3 is installed at the lower part of the shell 1, with a cross-shaped structure. Except for the cross frame, the rest is hollowed out to facilitate air inhalation. The bottom frame 3 is made of aluminum alloy, and a round hole with a diameter of 7 mm is set in the center for fixing the smoke-generating part of the smoke pen. A rubber pad 9 is pasted around the round hole to increase friction and fix the smoke pen. The shell 1 and the bottom frame 3 are connected and fixed with screws.

[0044] The upper cover 2 is mounted on the upper part of the housing 1 and is made of plastic material. A circular hole with a diameter of 20 mm is punched in the center of the upper cover 2 to connect a reducer for installing the bellows 6 .

[0045] In order to ensure that the smoke suction and exhaust have the same effect, a suction fan 4 and an exhaust fan 5 are provided. The two fans are installed opposite to each other and fixed in the middle section of the housing 1.

[0046] One end of the bellows 6 is connected to the reducer of the upper cover 2, and the other end is connected to the reducer of the exhaust nozzle 7; the exhaust nozzle 7 is determined according to the size of the roof grille of different models, and a rubber sealing ring 8 is installed on the upper part of the exhaust nozzle 7 to prevent smoke loss.

[0047] Through the above combination, a pyrotechnic sensor test device is formed.

[0048] During use of the high-speed train pyrotechnic sensor test device of the utility model, the smoke exhaust part of the smoke pen is fixed in the hole in the middle of the bottom frame 3, the exhaust switch is turned on, the suction fan 4 is started, and the smoke can be transmitted to the exhaust nozzle 7 through the bellows 6, and the exhaust nozzle 7 accurately sprays the smoke into the smoke sensor to trigger an alarm; when the alarm is triggered, the exhaust switch is turned on, the exhaust fan 5 is started, and the exhaust nozzle 7 will extract the smoke retained in the sensor, so that the sensor quickly stops the alarm.

[0049] The housing 1 described above is welded with aluminum alloy sheets to ensure lightness and durability. The housing 1 has a hollow housing that is through-through from top to bottom. In addition, a battery compartment is installed on one side of the housing 1 to provide power to the fan and control circuit. A handle is installed on the other side corresponding to the battery compartment to facilitate the operator to hold the device with one hand for operation. At the same time, for the convenience of control, two buttons are set on the outside of the handle, namely the "suction" button and the "exhaust" button, which serve as suction switches and exhaust switches for functional control of the device.

[0050] The upper cover 2 is made of hard plastic because it is far away from the smoke-generating part of the smoke pen and has no risk of deformation. The upper cover 2 is installed on the top of the shell 1 in cooperation with the shell 1. A circular hole is opened in the center of the upper cover 2, and a reducer is installed on the circular hole for installing a bellows 6 to establish a path for smoke circulation.

[0051] The bottom frame 3 described above has a cross-shaped outline. To ensure the overall support of the device, the base is also made of aluminum alloy. The cross bottom frame 3 is installed at the bottom of the housing 1, and its size matches the housing 1. To facilitate the fixation of the smoke pen, a hole is opened with the midpoint of the cross intersection of the bottom frame 3 as the center of the circle, and a rubber pad 9 is pasted inside the hole to increase friction so as to better fix the smoke pen. The rest of the bottom frame 3 except the cross frame is hollowed out to facilitate observation of the smoke inside the device, and also serves as an intake and exhaust channel for mixed air.

[0052] The suction fan 4 and exhaust fan 5 described above, as important functional components of the device, are responsible for providing energy for smoke transportation. Due to the structural constraints of the fan blades, it is impossible to simultaneously meet the suction and exhaust functions on one fan. In order to ensure the function of the device and provide the device with the same and sufficient suction and exhaust capabilities, two fans are installed relatively in the middle section of the housing 1 to achieve the air supply and exhaust functions. When the alarm test is performed, the suction fan 4 is started, and the smoke mixed air is sucked into the bellows 6, and finally sent into the detection range of the smoke and fire sensor through the smoke exhaust nozzle 7. When the test is completed, the exhaust fan 5 is started, the smoke in the enclosed space in the top plate is drawn back, and the alarm stops.

[0053] The bellows 6 described above is made of rubber. Since the top plate is relatively high, the smoke exhaust nozzle 7 directly contacts the top plate grille and requires the operator to hold the device high, which is very inconvenient. In order to solve this problem, a bellows 6 is added between the upper cover 2 and the smoke exhaust nozzle 7. The bellows 6 is flexible in deformation. During the test, the operator holds the device body with one hand and lifts the smoke exhaust nozzle 7 with the other hand, which can improve work efficiency and reduce labor intensity.

[0054] The exhaust nozzle 7 is made of hard plastic, and its size is set according to the size of the roof grille of the EMU. A variable diameter is set at the bottom to match the installation of the bellows 6. The variable diameter length varies according to the height of the passenger compartment of the vehicle model, and the operator's comfort is taken as the standard to avoid the operator raising his hands and looking up for a long time. The function of the exhaust nozzle 7 is to restrain the smoke from the smoke pen and send the smoke to the detection range of the smoke sensor in the roof grille in a directional manner. In order to better restrain the smoke and prevent waste, a sealing rubber ring 8 is added to the top of the exhaust nozzle 7 to increase the test efficiency.

[0055] The specific implementation process of the high-speed rail train pyrotechnic sensor test device of the utility model is as follows:

[0056] Taking a certain type of domestic EMU advanced maintenance vehicle as an example, each train passenger compartment is equipped with 17 smoke sensors, all installed inside the roof, the sensor mesh cover is 20mm away from the grille, the grille uses vertical bars with an area of ​​110mm×110mm, and the height of the passenger compartment of this type of EMU is 2.2 meters.

[0057] The utility model of the high-speed train pyrotechnic sensor test device has the following structure: Fig. 9 and 10 As shown, it includes: a shell 1, an upper cover 2, a bottom frame 3, an air suction fan 4, an air exhaust fan 5, a bellows 6, a smoke exhaust nozzle 7, a sealing rubber ring 8, and a rubber pad 9.

[0058] Among them, the outer shell 1 is the main body of the whole device. In order to take into account both lightness and structural strength, the outer shell is welded with aluminum alloy thin plates. The outer shell 1 is a rectangular parallelepiped with a hollow interior and a top-to-bottom through structure. To ensure portability and practicality, its dimensions are set to 80mm in length and width for the outer diameter, 78mm in length and width for the inner diameter, 1mm in thickness, 100mm in height, and a square bottom profile. In order to ensure the power supply for the fan and the circuit, a battery compartment is set on one side of the outer shell 1. The battery uses a rechargeable 18650 standard lithium-ion battery. In order to accommodate two 18650 batteries, the battery compartment has a length of 80mm, a width of 50mm, and a height of 20mm. A handle is installed on the opposite side of the battery compartment to facilitate holding the device with one hand during the test. The handle is provided with 'suction' and

[0059] 'Exhaust' button, used to control the device, see Figure 1 .

[0060] The upper cover 2 is installed on the top of the outer shell 1, buckled on the outer shell 1, and fixed to the outer shell 1 with sealant to ensure its sealing. Since the upper cover 2 is far away from the smoke pen, the upper cover 2 is made of plastic. Its design dimensions are 80mm in length and width for the inner diameter, 82mm in outer diameter, 1mm in wall thickness, and 15mm in height. At the same time, the center point of the upper cover 2 is taken as the center of the circle, and a circular hole with a diameter of 20mm is opened at the center of the circle. A plastic pipe fitting with an outer diameter of 20mm and a height of 22mm is connected to the circular hole. Its structure is similar to the reducer of the pipeline and is used to connect with the corrugated pipe 6. The above components are made by 3D printing and are integrally formed. See Figure 2 .

[0061] The bottom frame 3 is installed at the bottom of the housing 1. Figure 3 To ensure support, the bottom frame 3 is made of the same material as the shell 1. To ensure smooth airflow at the bottom and meet lightweight requirements, the bottom frame 3 adopts a simple cross-shaped appearance. To meet the requirements of installation at the bottom of the shell 1, the length of the aluminum plate is the same as the inner diameter of the shell 1, both of which are 78mm. At the same time, the thickness of the aluminum plate is designed to be 2mm. To facilitate the fixing of the smoke pen, a hole is opened in the center of the cross of the bottom frame 3, with a hole diameter of 7mm. At the same time, a rubber pad 9 with an outer diameter of 7mm and a thickness of 0.2mm is pasted in the hole. Figure 8 , enhancing friction. Since there is no sealing requirement, the bottom frame 3 and the housing 1 are fixed with bolts.

[0062] The suction fan 4 and the exhaust fan 5 are functional components of the high-speed train pyrotechnic sensor test device of the utility model. Their main function is to control the direction of smoke flow, so as to complete the pyrotechnic test. In order to ensure that the smoke can be sprayed into the top plate grille and meet the size of the shell 1, the suction fan 4 and the exhaust fan 5 are both mature products of 8×8 (length and width are both 80mm). Since the fan flow directions controlled by the two fans are opposite, the two fans are installed back to back. Figure 4 The assembly of two fans is installed in the middle section of the housing 1 and fixed to the housing 1 by bolts. When the device is in the suction mode, the suction fan 4 works and the exhaust fan 5 stops. The opposite is true when the device is in the exhaust mode.

[0063] like Figure 5 As shown, the bellows 6 is made of rubber, with an inner diameter of 20 mm, an outer diameter of 22 mm, a wall thickness of 1 mm, and a length of 1000 mm. One end of the bellows 6 is connected to the reducer of the upper cover 2, and the other end is installed on the reducer of the smoke exhaust nozzle 7. The main purpose of setting the bellows 6 is to keep a certain distance between the device body and the smoke exhaust nozzle 7. The operator holds the handle of the main body with one hand and holds the smoke exhaust nozzle 7 with the other hand, which can greatly reduce the burden on the operator and facilitate the operator to conduct the test.

[0064] like Figure 6As shown, the main function of the smoke exhaust nozzle 7 is to spray the smoke into the fireworks sensor in a directional manner. In order to cooperate with the bellows 6, the lower part of the smoke exhaust nozzle 7 adopts a variable diameter with the same specification as the variable diameter of the upper cover 2. At the same time, the smoke exhaust nozzle 7 is made of plastic to further reduce the weight and reduce the burden on the operator. The smoke exhaust nozzle 7 in this embodiment is made of 3D. In order to adapt to the operator's action of lifting the smoke exhaust nozzle, combined with the roof height of the vehicle type and the average height of the operator (calculated as 170cm), the variable diameter length of the smoke exhaust nozzle 7 in this embodiment is set to 150mm, and the designed exhaust port size of the smoke exhaust nozzle 7 is 120mm×120mm. Figure 7 As shown, a sealing rubber ring 8 is installed at the top of the smoke exhaust nozzle 7. When in use, the sealing rubber ring 8 fits tightly with the top plate to reduce smoke loss and increase smoke density.

[0065] The specific operation process of the high-speed rail vehicle pyrotechnic sensor test device of the utility model is as follows:

[0066] In step 1, the operator operates the smoke pen to the working state, and inserts the upper end of the smoke pen that generates smoke into the circular hole in the center of the bottom frame 3 of the device. Since a rubber pad 9 is installed inside the circular hole, the smoke pen is fixed in the middle of the bottom frame 3.

[0067] In the second step, the operator aims the exhaust nozzle 7 at the roof grille of the vehicle to ensure that all grilles are covered, presses the "exhaust" button, and the suction fan 4 works for 8 seconds. At this time, the smoke is sucked into the suction fan 4, passes through the upper cover 2, the bellows 6, and the exhaust nozzle 7, and is accurately sprayed into the smoke sensor. The smoke sensor alarms, and after 8 seconds, the suction fan 4 automatically stops.

[0068] Step 3. After the suction fan 4 stops working, press the "inhale" button, the exhaust fan 5 starts working, and the smoke inside and around the sensor is discharged through the exhaust nozzle 7, bellows 6, upper cover 2, exhaust fan 5, and bottom frame 3. The smoke alarm stops working. After 10 seconds, the exhaust fan 5 stops working.

[0069] After the above three steps, it only takes 18 seconds to complete the test of a smoke sensor, which greatly improves the work efficiency.

[0070] The utility model of the high-speed train pyrotechnic sensor test device can make the smoke generated by the smoke pen accurately reach the inside of the pyrotechnic sensor, thereby improving the alarm efficiency; at the same time, after the single sensor test is completed, the smoke around the sensor can be quickly cleared to eliminate the alarm state, thereby greatly improving the test efficiency.

[0071] After using the high-speed train pyrotechnic sensor test device of the utility model, the existence of the suction fan can force the smoke to flow, increase the smoke density, and reduce the test time. At the same time, the use of the designed smoke exhaust nozzle can gather the smoke and reduce the smoke loss.

[0072] Due to the presence of the smoke exhaust fan, after the test is completed, the smoke inside the top plate and the enclosed space around the smoke sensor can be quickly exhausted, so that the smoke sensor stops alarming quickly, thereby improving the test efficiency.

[0073] The utility model provides a high-speed train pyrotechnic sensor test device, wherein the control button is arranged on the handle, and the time for air suction and exhaust is set, thereby reducing the difficulty of the test; and the variable diameter length of the smoke exhaust nozzle is lengthened, thereby facilitating the test for personnel of different heights.

[0074] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A high-speed train pyrotechnic sensor test device, characterized in that: It comprises: a housing (1), a bellows (6) and a smoke exhaust nozzle (7) which are connected in sequence; A bottom frame (3) is provided at the lower part of the outer shell (1), and an upper cover (2) is provided at the upper part; an air suction fan (4) and an air exhaust fan (5) are provided in the space surrounded by the outer shell (1) between the bottom frame (3) and the upper cover (2); A circular hole for fixing the smoke pen is provided at the center of the bottom frame (3); The suction fan (4) is used to suck smoke and air mixed into the bellows (6) and discharge them from the smoke exhaust nozzle (7); The exhaust fan (5) is used to draw smoke in the enclosed space in the top plate back to the smoke exhaust nozzle (7) and discharge it through the bellows (6).

2. The high-speed train pyrotechnic sensor test device according to claim 1 is characterized in that: The center of the upper cover (2) is provided with a circular hole for installing the corrugated pipe (6).

3. The high-speed train pyrotechnic sensor test device according to claim 1 is characterized in that: A sealing rubber ring (8) is installed on the upper part of the smoke exhaust nozzle (7).

4. The high-speed train pyrotechnic sensor test device according to claim 1 is characterized in that: A rubber pad (9) is provided at the circular hole in the center of the bottom frame (3).

5. The high-speed train pyrotechnic sensor test device according to claim 1, characterized in that: The housing (1) is provided with a suction switch and an exhaust switch for controlling the operation of the suction fan (4) and the exhaust fan (5), respectively.

6. The high-speed train pyrotechnic sensor test device according to claim 1, characterized in that: The bellows (6) is made of rubber.

7. The high-speed train pyrotechnic sensor test device according to claim 1 is characterized in that: The smoke exhaust nozzle (7) is made of plastic.

8. The high-speed train pyrotechnic sensor test device according to any one of claims 1 to 7, characterized in that: A battery compartment is installed on one side of the housing (1), and the battery compartment is used to provide power to the fan and the control circuit; A handle is installed on the other side of the housing (1) opposite to the battery compartment, and the handle is used to facilitate the operator to hold the device with one hand; An air suction button and an air exhaust button are arranged on the outside of the handle, and are used to control the operation of the air suction fan (4) and the air exhaust fan (5) respectively.

Images