CN111923948A - Novel air conditioning system of rail vehicle - Google Patents
Novel air conditioning system of rail vehicle Download PDFInfo
- Publication number
- CN111923948A CN111923948A CN202010813655.6A CN202010813655A CN111923948A CN 111923948 A CN111923948 A CN 111923948A CN 202010813655 A CN202010813655 A CN 202010813655A CN 111923948 A CN111923948 A CN 111923948A
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- air conditioning
- air
- conditioning unit
- pressure wave
- shaped groove
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D27/00—Heating, cooling, ventilating, or air-conditioning
- B61D27/0009—Means for controlling or equalizing air pressure shocks in trains, e.g. when passing or crossing in tunnels
Abstract
A novel air conditioning system of a railway vehicle comprises an air conditioning unit and a waste air exhaust unit, wherein the air conditioning unit comprises a fresh air inlet, a vertical plate opening, an air supply outlet and a return air inlet, the fresh air inlet is connected with the outer side of the vertical plate opening of the air conditioning unit to form a fresh air channel, and the inner side of the vertical plate opening of the air conditioning unit is connected with the return air inlet of the air conditioning unit. The generated air pressure flow is prevented from generating uncomfortable feelings such as tinnitus and the like for drivers and passengers, and the riding comfort is improved.
Description
Technical Field
The invention belongs to the technical field of air conditioning systems of railway vehicles, and particularly relates to a novel air conditioning system of a railway vehicle.
Background
At present, for a motor train, a high-speed rail train and other trunk trains with the operation speed of more than 120km/h and inter-city trains, the whole carriage has the requirement of air tightness, and accordingly, an air conditioning system generally needs to be provided with a pneumatic pressure wave protection system: the headstock is provided with an air inlet, a pressure sensor and a pressure wave protection control device; a pneumatic pressure protection valve is arranged in the air conditioning unit; the waste discharge unit is arranged under the vehicle and is provided with a pneumatic pressure wave protection valve; and an air pipe is arranged to provide compressed air for the pressure wave protection valve. And for low-speed urban railway passenger cars, the operation speed is less than 80km/h, and a pressure wave protection system is not generally arranged. The urban railway vehicle with the operation speed between 80km/h and 120km/h has the disadvantages that the running speed is relatively high, drivers and passengers can generate uncomfortable feelings such as tinnitus when the vehicle enters and exits a tunnel and passes through an air exhaust shaft and other line sections suddenly change, if a pneumatic pressure wave protection system is added, the space of the vehicle is limited, the external pressure signal of the vehicle needs to be collected at the head of the vehicle, and an air pipe for supplying compressed air is arranged from the bottom of the vehicle to the top of the vehicle, meanwhile, the control logic is relatively complex, and the cost is increased.
Disclosure of Invention
The invention aims to design and configure an air conditioning system aiming at an urban railway vehicle with higher sealing performance and higher operation speed required by the whole vehicle, the air conditioning system can provide cold and hot air required by normal air conditioning function for a driver and passengers, can also increase the pressure wave protection function by an effective, economic and convenient scheme, can completely isolate the air circulation at the air inlets inside and outside the vehicle when the air circulation of the air inlets is not allowed, and prevents the driver and the passengers from generating uncomfortable feelings such as tinnitus and the like when the vehicle enters or exits a tunnel and passes through an air exhaust shaft and other line sections suddenly change, so as to meet the requirement of riding comfort of the driver cab and the passengers.
In order to achieve the purpose, the invention provides a novel air conditioning system of a railway vehicle, which comprises an air conditioning unit and a waste discharge unit, wherein the air conditioning unit comprises a fresh air port, a vertical plate opening, an air supply port and an air return port, the fresh air port is connected with the outer side of the vertical plate opening of the air conditioning unit to form a fresh air channel, the inner side of the vertical plate opening of the air conditioning unit is connected with the air return port of the air conditioning unit, the air conditioning unit also comprises an electric pressure wave protection valve of the air conditioning unit, the electric pressure wave protection valve of the air conditioning unit is arranged on the outer side of the vertical plate opening of the air conditioning unit, the electric pressure wave protection valve of the air conditioning unit comprises a fixed baffle and a movable baffle, a gap between the movable baffle and the fixed baffle of the vertical plate opening of the air conditioning unit is a channel for fresh air to enter the area of the air return port in, the electric pressure wave protection valve of the waste discharge unit comprises a fixed baffle and a movable baffle, a gap between the fixed baffle of the movable baffle and an air outlet is a channel outside the waste gas discharge vehicle in the vehicle, a sealing strip is arranged between the fixed baffle and the movable baffle, the electric pressure wave protection valve of the air conditioning unit and the electric pressure wave protection valve of the waste discharge unit are both electric pressure wave protection valves, and air conditioning controllers which are opened or closed according to the running position and speed information control of the train are connected. When a vehicle enters or exits the tunnel and passes through an exhaust shaft and other line sections suddenly change, the air conditioner controller controls the electric pressure wave protection valve to be closed, and an air channel outside the vehicle is completely cut off, so that the phenomenon that pressure fluctuation in a passenger room of the urban railway vehicle gives drivers and passengers uncomfortable feelings such as tinnitus is avoided.
The air inlet between air conditioning unit supply-air outlet, return air inlet and useless row unit air exit and the roof adopts the crisscross seal structure of U type all around to seal, the crisscross seal structure of U type respectively sets up a U type groove from top to bottom, sets up rubber seal strip in every U type groove, and upper and lower U type groove staggered arrangement respectively has the rubber seal strip at the relative U type groove middle part of a stile extrusion to form dual compression and seal, through dual seal structure, except preventing wind and rain-proof effect, can also prevent to have the air leakage of certain pressure.
The height of the rubber sealing strip in the U-shaped groove is lower than the edge of the U-shaped groove, the contact area between the single side of the U-shaped groove and the rubber sealing strip is small, and a better sealing effect is easily obtained.
Compared with the prior art, the invention has the following positive effects:
the novel air conditioning system for the railway vehicle is mainly suitable for urban railway vehicles with higher speed, and electric rather than pneumatic pressure wave protection valves are arranged in the air conditioning unit and the waste discharge unit, so that the pipeline arrangement for providing compressed air required by pneumatic control is reduced. Meanwhile, the pressure wave control adopts signals such as the running position and speed of the train instead of pressure signals inside and outside the train, an air inlet does not need to be formed in a hood outside the train, and a pressure wave protection control device is arranged in an electric cabinet of a cab and used for giving an instruction to an actuator of the protection valve, so that the protection valve can be opened or closed. When a vehicle enters or exits the tunnel and changes suddenly through the air exhaust shaft and other line sections, the air conditioner controller controls the electric pressure wave protection valve to be closed, so that the generated pressure flow is prevented from generating uncomfortable feelings such as tinnitus for a driver and passengers, and the riding comfort is improved.
Drawings
FIG. 1 is a schematic view of a head-car air conditioning system configuration;
FIG. 2 is a schematic illustration of a mid-vehicle air conditioning system configuration;
FIG. 3 is a schematic view of a mid-vehicle (with pantograph) air conditioning system configuration;
FIG. 4 is a schematic diagram of an air conditioning unit electric pressure wave protection valve configuration
FIG. 5 is a front view of a centralized waste dump unit electro-dynamic pressure wave protection valve configuration
FIG. 6 is a top view of a centralized waste dump unit electro-dynamic pressure wave protection valve arrangement
FIG. 7 is a schematic sectional view of a tuyere alternative sealing structure
FIG. 8 is a schematic diagram of a seven-motor pressure wave protection valve
Detailed Description
Referring to fig. 1 to 8, the present invention provides a novel air conditioning system for a rail vehicle, and particularly, for an urban railway vehicle with an operating speed of 120km/h or less and more than 80km/h, the air conditioning system is designed in a targeted and optimized manner on the basis of a mature and commonly used air conditioning system configuration, so that the air conditioning system has an effective, economical and convenient pressure wave protection function, and can avoid uncomfortable feelings such as tinnitus to drivers and passengers. Two air conditioning units 1 in each carriage need to adopt a downward-air-out and downward-air-return air supply and return mode, air inlets are required to be opened at positions corresponding to an air supply outlet 9 and an air return outlet 10 by a roof steel structure, an air inlet 7 is opened on a vertical plate 6 near the air return outlet 10 in the air conditioning unit and an electric pressure wave protection valve 5 is arranged, a fixed baffle 23 of the electric pressure wave protection valve 5 is installed and sealed at the position of the opening 7 of the vertical plate of the air conditioning unit, and when the electric pressure wave protection valve is in an open state, fresh air enters the area of the air return outlet in the air conditioning unit through a fresh air inlet 8 of the air conditioning unit, a gap between the fixed baffle and a movable baffle on the electric pressure wave protection valve and the vertical plate air inlet 7 and is mixed with air in.
The centralized waste exhaust unit 2 is arranged on the roof, mainly comprises a shell, a fan, an electric pressure wave protection valve 11, electric parts and the like, and is arranged on the roof, so that the work of rechecking the position on the underframe, selecting an exhaust channel, sealing an exhaust port on the underframe and the like is avoided. An exhaust port 12 is arranged at the lower part of the centralized waste exhaust unit 2 and an electric pressure wave protection valve 11 is arranged, a fixed baffle of the electric pressure wave protection valve 11 is installed and sealed on the centralized waste exhaust unit, an air port needs to be opened at the position corresponding to the waste exhaust port 12 by a roof steel structure, and when the electric pressure wave protection valve is in an open state, air in a passenger room enters the centralized waste exhaust unit 2 through a gap between the roof steel structure air port, the waste exhaust port 12, the fixed baffle and a movable baffle on the electric pressure wave protection valve 11 under the action of a fan and is exhausted to the atmosphere outside the vehicle under the action of the fan arranged in the centralized waste exhaust unit 2. Each vehicle is provided with two centralized waste discharge units, and the arrangement positions of the waste discharge units of different vehicle types can be adjusted. In order to improve the air tightness in a carriage, a U-shaped staggered sealing structure is adopted at the periphery of a square air opening 16 between an air conditioning unit, a centralized waste discharge unit and a vehicle roof, rubber sealing strips 14 and 17 are adhered in U-shaped grooves 15 and 18, and one single vertical edge 20 of the U-shaped grooves on the air conditioning side and the vehicle roof 19 side respectively extrudes the corresponding rubber sealing strips so as to realize double sealing.
The pressure wave protection control strategy is that a Train Control and Management System (TCMS) needs to transmit opening and closing instructions to an air conditioner controller through a train network in advance for a certain time according to position and speed information of a tunnel portal, an exhaust shaft and the like input in advance, and then the air conditioner controller commands an electric actuator 21 to drive a rotating shaft under a fixed frame of an electric pressure wave protection valve to rotate according to corresponding instructions so as to drive a movable panel 22 on the electric pressure wave protection valve to contact or be far away from a fixed baffle 23, so that the electric pressure wave protection valve is closed or opened. When the electric pressure wave protection valve is closed, the air channel outside the train is completely cut off so as to avoid pressure fluctuation in the passenger compartment of the urban railway vehicle. The condensed water of the air conditioning unit needs to adopt a drain pipe 4, and the scattered drainage is forbidden.
In order to maintain the positive pressure in the passenger room, under the working conditions of a normal mode, emergency ventilation and the like, the waste exhaust unit and the air conditioning unit need to be controlled in a linkage mode, so that the air quantity sucked from a fresh air port of the air conditioning unit is ensured, and the air quantity equivalent to that discharged from an exhaust outlet of the waste exhaust unit is ensured. Meanwhile, when the waste discharge unit meets rated air volume (normal mode, emergency ventilation and the like), the opening degree of the air valve is required to be not opened to the maximum, so that the positive pressure of the whole vehicle is measured to be too high, the opening degree of the air valve can be increased, larger air volume is discharged, and the positive pressure in the passenger room is reduced. Other air supply devices, electric heaters and the like required by ventilation, heating and the like can be reasonably configured according to the air conditioning function of the actual requirement.
Claims (3)
1. The utility model provides a novel air conditioning system of rail vehicle, includes air conditioning unit and useless unit of arranging, air conditioning unit includes fresh air inlet, riser opening, supply-air outlet, return air inlet, and the fresh air inlet is connected the air conditioning unit riser opening outside and is formed fresh air channel, and air conditioning unit riser opening inboard is connected air conditioning unit return air inlet, its characterized in that: the air conditioning unit also comprises an air conditioning unit electric pressure wave protection valve which is arranged outside the opening of the vertical plate of the air conditioning unit and comprises a fixed baffle and a movable baffle, a gap between the movable baffle and the fixed baffle at the opening of the vertical plate of the air conditioning unit is a channel for fresh air to enter the air return opening area in the air conditioning unit, the waste discharge unit is arranged on the roof and comprises a waste discharge unit electric pressure wave protection valve, the waste discharge unit electric pressure wave protection valve is arranged on the upper side of an exhaust outlet of the waste discharge unit and comprises a fixed baffle and a movable baffle, a gap between the movable baffle and the fixed baffle of the exhaust outlet is a channel for discharging waste gas in the vehicle out of the vehicle, set up the sealing strip between fixed stop and the adjustable fender, air conditioning unit electric pressure wave protection valve and useless unit electric pressure wave protection valve are all connected and are controlled its air conditioner controller who opens or close according to train position of traveling and speed information.
2. The novel rail vehicle air conditioning system of claim 1, wherein: the air outlets between the air supply outlet, the air return inlet, the exhaust outlet of the waste discharge unit and the roof of the air conditioning unit are sealed by adopting a U-shaped staggered sealing structure, the U-shaped staggered sealing structure is that an upper U-shaped groove and a lower U-shaped groove are respectively arranged, a rubber sealing strip is arranged in each U-shaped groove, the upper U-shaped groove and the lower U-shaped groove are arranged in a staggered mode, and the upper U-shaped groove and the lower U-shaped groove are respectively provided with a vertical edge to extrude the rubber.
3. The novel rail vehicle air conditioning system of claim 1, wherein: the height of the rubber sealing strip in the U-shaped groove is lower than the edge of the U-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010813655.6A CN111923948A (en) | 2020-08-13 | 2020-08-13 | Novel air conditioning system of rail vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010813655.6A CN111923948A (en) | 2020-08-13 | 2020-08-13 | Novel air conditioning system of rail vehicle |
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| Publication Number | Publication Date |
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| CN111923948A true CN111923948A (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010813655.6A Pending CN111923948A (en) | 2020-08-13 | 2020-08-13 | Novel air conditioning system of rail vehicle |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112793604A (en) * | 2021-02-04 | 2021-05-14 | 株洲中车时代电气股份有限公司 | Pressure wave protection valve control method, device and system of rail train and server |
| CN113002576A (en) * | 2021-01-25 | 2021-06-22 | 中车大连机车研究所有限公司 | Vehicle-mounted air conditioner for train |
| CN113562010A (en) * | 2021-07-27 | 2021-10-29 | 重庆中车长客轨道车辆有限公司 | Air tightness control system and method for double-flow vehicle |
| WO2022257445A1 (en) * | 2021-06-09 | 2022-12-15 | 中车株洲电力机车有限公司 | Roof structure of railway vehicle |
-
2020
- 2020-08-13 CN CN202010813655.6A patent/CN111923948A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113002576A (en) * | 2021-01-25 | 2021-06-22 | 中车大连机车研究所有限公司 | Vehicle-mounted air conditioner for train |
| CN112793604A (en) * | 2021-02-04 | 2021-05-14 | 株洲中车时代电气股份有限公司 | Pressure wave protection valve control method, device and system of rail train and server |
| WO2022257445A1 (en) * | 2021-06-09 | 2022-12-15 | 中车株洲电力机车有限公司 | Roof structure of railway vehicle |
| CN113562010A (en) * | 2021-07-27 | 2021-10-29 | 重庆中车长客轨道车辆有限公司 | Air tightness control system and method for double-flow vehicle |
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