Subway tunnel ventilation equipment

Abstract

The utility model relates to the technical field of tunnel ventilation equipment, and discloses subway tunnel ventilation equipment which comprises a ventilation barrel internally provided with a flow guide fan, the ventilation barrel is sleeved with a fixing barrel, and an installation base is fixedly installed on the fixing barrel. A front annular protruding strip and a rear annular protruding strip are fixedly installed at the positions, close to the front end and the rear end, of the ventilation barrel respectively, an air conveying ring is arranged on the front annular protruding strip, a plurality of air outlet holes are formed in the inner side of the air conveying ring, a conveying pipe is fixedly connected to the air conveying ring in an inserted mode, and the end of the conveying pipe is connected with the output end of the carbon dioxide generator. The utility model aims to solve the problems that existing subway tunnel ventilation equipment is poor in fireproof performance and mostly does not have an active fire extinguishing function, so that the subway tunnel ventilation equipment is exposed in a fire source for a long time, and the subway tunnel ventilation equipment is damaged at high temperature and cannot work normally.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel ventilation equipment, and in particular relates to subway tunnel ventilation equipment. Background Art

[0002] The ventilation system of subway tunnels is an important part of ensuring the safety and comfort of passengers and operators. Since subway tunnels are usually located underground with limited air circulation, it is necessary to design and install effective ventilation systems to maintain good air quality, control temperature and humidity, and exhaust smoke and harmful gases in emergency situations. In order to ensure the normal use of the tunnel ventilation system, it is usually necessary to carry out fire protection treatment on the subway tunnel ventilation system.

[0003] However, the existing subway tunnel ventilation equipment has poor fireproof performance, and most of them do not have the function of active fire extinguishing, which causes the subway tunnel ventilation equipment to be exposed to the fire source for a long time, causing the underground tunnel ventilation equipment to be damaged under high temperature and unable to work normally. Therefore, we propose a subway tunnel ventilation equipment to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the existing subway tunnel ventilation equipment has poor fireproof performance and most of them do not have the function of active fire extinguishing, which causes the subway tunnel ventilation equipment to be exposed to the fire source for a long time, causing the underground tunnel ventilation equipment to be damaged at high temperature and unable to work normally.

[0005] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0006] A subway tunnel ventilation device comprises a ventilation cylinder with a guide fan arranged inside, a fixing cylinder is sleeved on the ventilation cylinder, a mounting seat is fixedly mounted on the fixing cylinder, a front annular convex strip and a rear annular convex strip are respectively fixedly mounted on the ventilation cylinder near the front and rear ends, an air delivery ring is arranged on the front annular convex strip, a plurality of air outlet holes are opened on the inner side of the air delivery ring, a delivery pipe is fixedly plugged on the air delivery ring, and an end of the delivery pipe is connected to the output end of a carbon dioxide generator.

[0007] It is further defined that a first fixing rod and two second fixing rods are fixedly installed on the front annular convex strip, and a first guide cylinder and a second guide cylinder are fixedly installed on the ends of the first fixing rod and the second fixing rod respectively, and slide grooves are provided on the cylinder walls of the first guide cylinder and the second guide cylinder, and sliders are fixedly installed on the gas transmission ring at even intervals, and the sliders are slidably installed in the slide grooves of the first guide cylinder and the second guide cylinder, and a sleeve is fixedly installed on the end of the second guide cylinder, and a piston is movably installed in the sleeve, and a working medium is filled between the piston and the sleeve, and the working medium at this place is ethanol, and a push rod is fixedly installed on the end of the piston, and the end of the push rod passes through the sleeve and the end of the second guide cylinder and is connected to the slider, and a contact switch is fixedly installed on the interior of the second guide cylinder away from the sleeve, and a first solenoid valve is provided between the delivery pipe and the gas transmission ring, and the contact switch is used to control the operation of the first solenoid valve. With this structural design, when a fire occurs in the tunnel and the temperature at the ventilation equipment is too high, ethanol vaporizes, pushing the piston and the push rod out of the sleeve, causing the air supply ring to move toward the end of the ventilation tube until the slider contacts the contact switch, so that the first solenoid valve is in the open state, and carbon dioxide can be transported to the air supply ring to extinguish the open flame that flows in with the air, thereby preventing the fire from continuing to spread in the tunnel through the ventilation equipment.

[0008] It is further defined that an extension tube is fixedly installed at one end of the air delivery ring close to the ventilator, and protective nets are provided at both the front and rear ends of the ventilator. With such a structural design, the ventilator and the guide fan in the ventilator can be protected by the extension tube and the protective net.

[0009] It is further defined that a third fixing rod is fixedly installed on the rear annular convex strip, and a fixing ring with a hollow interior is fixedly installed on the end of the third fixing rod, and a plurality of through holes are opened on the inner side of the fixing ring. A water pipe that can supply water to the end of the fixing ring is fixedly plugged on the fixing ring, and a second solenoid valve is provided between the water pipe and the fixing ring, and the second solenoid valve is connected to the contact switch by telecommunication. With such a structural design, the contact switch can control the operation of the second solenoid valve, prompting the fixing ring to spray water, thereby reducing the density and temperature of the thick smoke passing through the ventilation duct, and further preventing the spread of the fire.

[0010] It is further defined that the air delivery ring and the fixing ring are respectively arranged at the air inlet end and the air outlet end of the ventilator. Such a structural design is simple in structure and convenient to use.

[0011] The utility model adopting the above technical solution has the following advantages:

[0012] According to the utility model, when a fire occurs in a subway tunnel and the temperature at the ventilation equipment rises, the carbon dioxide generator can be delivered to the gas delivery ring through the delivery pipe to extinguish the open flame that may enter the ventilation duct, so as to prevent the temperature in the ventilation duct from being too high, causing damage to the electronic components and ventilation fans inside the ventilation duct and affecting the use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings;

[0014] Figure 1 This is a schematic diagram of the structure of a subway tunnel ventilation device of the utility model;

[0015] Figure 2 This is a schematic structural diagram of a ventilation tube part in a subway tunnel ventilation device of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the air transmission ring part of a subway tunnel ventilation device of the utility model;

[0017] Figure 4 The utility model is a schematic cross-sectional structure diagram of an air transmission ring part in a subway tunnel ventilation device.

[0018] The main component symbols are described as follows:

[0019] 1. Ventilation tube; 2. Fixing tube; 3. Mounting seat;

[0020] 4. Front annular ridge; 40. Rear annular ridge;

[0021] 41. gas transmission ring; 411. slider; 412. extension tube;

[0022] 42. Delivery pipe;

[0023] 5. first fixing rod; 51. second fixing rod; 52. first guide cylinder;

[0024] 53. second guide cylinder; 531. sleeve; 532. piston; 533. push rod; 534. contact switch;

[0025] 6. The third fixing rod; 61. The fixing ring; 62. The water pipe. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that in the drawings or in the specification, similar or identical parts use the same figure numbers, and the implementation methods not shown or described in the drawings are forms known to ordinary technicians in the relevant technical field. In addition, the directional terms mentioned in the embodiments, such as "upper", "lower", "top", "bottom", "left", "right", "front", "back", etc., are only referenced to the directions of the drawings and are not used to limit the scope of protection of the present invention.

[0027] like Figure 1 to Figure 4As shown, a subway tunnel ventilation device of the utility model comprises a ventilation tube 1 with a guide fan arranged inside, a fixing tube 2 is sleeved on the ventilation tube 1, a mounting seat 3 is fixedly mounted on the fixing tube 2, a front annular convex strip 4 and a rear annular convex strip 40 are respectively fixedly mounted near the front and rear ends of the ventilation tube 1, an air delivery ring 41 is arranged on the front annular convex strip 4, a plurality of air outlet holes are opened on the inner side of the air delivery ring 41, a delivery pipe 42 is fixedly plugged on the air delivery ring 41, and an end of the delivery pipe 42 is connected to the output end of the carbon dioxide generator.

[0028] A first fixing rod 5 and two second fixing rods 51 are fixedly installed on the front annular convex strip 4, and a first guide cylinder 52 and a second guide cylinder 53 are fixedly installed on the ends of the first fixing rod 5 and the second fixing rod 51 respectively. Slide grooves are provided on the walls of the first guide cylinder 52 and the second guide cylinder 53. Slide blocks 411 are fixedly installed on the gas delivery ring 41 at uniform intervals. The slide blocks 411 are slidably installed in the slide grooves of the first guide cylinder 52 and the second guide cylinder 53. A sleeve 531 is fixedly installed on the end of the second guide cylinder 53. A piston 532 is movably installed in the sleeve 531. A working medium is filled between the piston 532 and the sleeve 531. A push rod 533 is fixedly installed on the end of the piston 532. The end of the push rod 533 passes through the sleeve 531 and the end of the second guide cylinder 53 and is connected to the slide block 411. A contact switch 534 is fixedly installed in the interior of the second guide cylinder 53 away from the sleeve 531. A first solenoid valve is provided between the delivery pipe 42 and the gas delivery ring 41. The contact switch 534 is used to control the operation of the first solenoid valve.

[0029] An extension tube 412 is fixedly installed at one end of the air supply ring 41 close to the ventilation duct 1. When the air supply ring 41 moves toward the ventilation duct 1, the end of the extension tube 412 is close to the ventilation duct 1, which can extend the air inlet end of the ventilation duct 1, so that the inflowing air can be effectively processed. Protective nets are provided at the front and rear ends of the ventilation duct 1. The protective nets can block debris entering the ventilation duct 1, thereby preventing the guide fan in the ventilation duct 1 from being damaged.

[0030] A third fixing rod 6 is fixedly installed on the rear annular convex strip 40, and an internally hollow fixing ring 61 is fixedly installed on the end of the third fixing rod 6. A plurality of through holes are opened on the inner side of the fixing ring 61. A water pipe 62 that can supply water to the end of the fixing ring 61 is fixedly inserted on the fixing ring 61. A second solenoid valve is provided between the water pipe 62 and the fixing ring 61. The second solenoid valve is electrically connected to the contact switch 534. The air supply ring 41 and the fixing ring 61 are respectively arranged at the air inlet and air outlet ends of the ventilator 1. The air supply ring 41 cooperates with the fixing ring 61 to successively extinguish and cool the air entering the ventilator 1 to prevent the problem of fire spreading.

[0031] The method of using the utility model is as follows:

[0032] When in use, the guide fan works to guide the air so that the air enters from the front annular ridge 4 and flows out from the rear annular ridge 40. Through the cooperation of multiple ventilation devices, the air quality and temperature in the subway tunnel can be guaranteed;

[0033] When a fire occurs in the subway tunnel, the ethanol in the sleeve 531 will vaporize at high temperature, causing the piston 32 to move in the sleeve 531, and then the slider 411 will be pushed to move in the second guide cylinder 53 through the push rod 533, and the air supply ring 41 will move accordingly, moving in the direction close to the front annular ridge 4 until the slider 411 contacts the contact switch 534, and the first solenoid valve and the second solenoid valve are switched to the open state, and carbon dioxide and water will be output to the air supply ring 41 and the fixed ring 61 through the delivery pipe 42 and the water delivery pipe 62 respectively, so as to extinguish and cool the air entering the ventilation shaft 1 in turn to reduce the speed of fire spread.

[0034] The above is a detailed introduction to a subway tunnel ventilation device provided by the utility model. The description of the specific embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A subway tunnel ventilation device, comprising a ventilation tube (1) with a guide fan disposed therein, characterized in that: The ventilation cylinder (1) is sleeved with a fixing cylinder (2), and a mounting seat (3) is fixedly mounted on the fixing cylinder (2). A front annular convex strip (4) and a rear annular convex strip (40) are respectively fixedly mounted on the ventilation cylinder (1) near the front and rear ends. An air delivery ring (41) is arranged on the front annular convex strip (4), and a plurality of air outlet holes are opened on the inner side of the air delivery ring (41). A delivery pipe (42) is fixedly plugged into the air delivery ring (41), and the end of the delivery pipe (42) is connected to the output end of the carbon dioxide generator.

2. A subway tunnel ventilation device according to claim 1, characterized in that: A first fixing rod (5) and two second fixing rods (51) are fixedly mounted on the front annular convex strip (4); a first guide cylinder (52) and a second guide cylinder (53) are fixedly mounted on the ends of the first fixing rod (5) and the second fixing rod (51), respectively; sliding grooves are provided on the walls of the first guide cylinder (52) and the second guide cylinder (53); sliding blocks (411) are fixedly mounted on the gas transmission ring (41) at even intervals; the sliding blocks (411) are slidably mounted in the sliding grooves of the first guide cylinder (52) and the second guide cylinder (53); a sleeve (531) is fixedly mounted on the end of the second guide cylinder (53) A piston (532) is movably installed in the sleeve (531), and a working medium is filled between the piston (532) and the sleeve (531). A push rod (533) is fixedly installed at the end of the piston (532). The end of the push rod (533) passes through the sleeve (531) and the end of the second guide cylinder (53) and is connected to the slider (411). A contact switch (534) is fixedly installed inside the second guide cylinder (53) away from the sleeve (531). A first solenoid valve is provided between the delivery pipe (42) and the gas delivery ring (41), and the contact switch (534) is used to control the operation of the first solenoid valve.

3. The subway tunnel ventilation equipment according to claim 1, characterized in that: An extension tube (412) is fixedly mounted on one end of the air delivery ring (41) close to the ventilation tube (1), and protective nets are provided at both the front and rear ends of the ventilation tube (1).

4. The subway tunnel ventilation equipment according to claim 2, characterized in that: A third fixing rod (6) is fixedly mounted on the rear annular convex strip (40), and an internally hollow fixing ring (61) is fixedly mounted on the end of the third fixing rod (6), and a plurality of through holes are provided on the inner side of the fixing ring (61). A water pipe (62) is fixedly plugged into the fixing ring (61) and can supply water to the end of the fixing ring (61). A second solenoid valve is provided between the water pipe (62) and the fixing ring (61), and the second solenoid valve is electrically connected to the contact switch (534).

5. The subway tunnel ventilation equipment according to claim 4, characterized in that: The air delivery ring (41) and the fixing ring (61) are respectively arranged at the air inlet end and the air outlet end of the ventilator (1).

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