CN202448996U

CN202448996U - Pneumatic pressure protection device of ventilating system

Info

Publication number: CN202448996U
Application number: CN201120566219XU
Authority: CN
Inventors: 刘爱伶; 王开团; 周海廷
Original assignee: Bombardier Sifang Qingdao Transportation Ltd
Current assignee: Bombardier Sifang Qingdao Transportation Ltd
Priority date: 2011-12-30
Filing date: 2011-12-30
Publication date: 2012-09-26
Anticipated expiration: 2021-12-30

Abstract

The utility model relates to a pneumatic pressure protection device of a ventilating system. According to the utility model, related protective devices which are used for detecting and controlling the pneumatic pressure at a fresh air inlet and a waste gas outlet are added in the ventilating system, so that the pressure fluctuation in a pipeline of an automobile can be kept within the allowed scope so as to ensure the comfort of the sitting environment in the automobile when the pressure change outside the automobile is large. The pneumatic pressure protection device comprises a controller, a pressure balancing tank and a pressure protection valve which are arranged in the ventilating circulation pipeline, wherein the controller is connected with the pipeline in the automobile, and is capable of detecting the pneumatic pressures in the pipeline in the automobile and the pipeline outside the automobile; the controller is connected with the pressure protection valve used for adjusting the pneumatic pressure in the ventilating circulation pipeline; the pressure balancing tank is arranged between the pipeline in the automobile and the controller; and the pressure protection valve is a device using compressed air as an air source to drive an action terminal. According to the change of the pressure difference of the inside and the outside of the automobile, the controller controls the pressure protection valve and provides the compressed air to the pressure protection valve, so that the fresh air inlet and the waste gas outlet can be specifically switched to be closed or opened.

Description

Ventilation system Pneumatic pressure fender guard

Technical field

The utility model relates to a kind of Pneumatic pressure fender guard that is applied to the guideway vehicle ventilation system, belongs to the track traffic technical field.

Background technology

At present the domestic guideway vehicle that puts into effect (like motor train unit, subway and urban light rail) speed per hour reached 300 kilometers and more than, pay attention to more and more also in the vehicle speed-raising that travelling comfort is the design of purpose in the car to improve.

Previously used low speed passenger vehicle; Because Vehicle Speed is lower through tunnel or meeting the time; The pressure variation that car is outer is also not obvious; Thereby can not cause in the car that the variation of Pneumatic pressure in the pipeline exceeds the comfort level scope (like 500Pa/s) of passenger's hearing, so not high for the designing requirement of pressure protective device in the air conditioner ventilating system, even the related pressure fender guard must be installed.

But along with being widely used of high-speed track vehicle; When getting into tunnel or meeting in the process of running at high speed, the air of vehicle periphery receives strong disturbance, especially the head of vehicle and afterbody; Significantly sudden change takes place in the air pressure at the car body outer surface, promptly forms a kind of transient pressure ripple.Because this transient pressure ripple causes that interior pressure moment, great changes will take place, thereby make that noise increases in the car, the passenger is taken place by tinnitus, comfort level significantly reduces.

Therefore for the comfort level that satisfies in the car requires, do not make passenger's ear-drum that sense of discomfort is arranged, need the car body air conditioner system is made the improvement of pressure adaptation property.But design difficulty is the resh air requirement and the useless exhaust air rate that should guarantee that normal vehicle operation is required; Guarantee the interior change of pneumatic pressure of car (in 200Pa/s) within the range of permission again; But also to guarantee that the pressure protective device of being taked can realize the adjusting of Pneumatic pressure in the vent line in the short period of time, the difficulty of integral structure and control method is bigger.

In view of this, the special present patent application that proposes.

The utility model content

The described ventilation system Pneumatic pressure of the utility model fender guard; Its design goal is to solve the deficiency of above-mentioned prior art existence and in ventilation system, increases the relevant protection device that detects and control new wind inlet, outlet port place Pneumatic pressure; Can keep that the fluctuation of pressure in the pipeline remains within the allowed band in the car when changing greatly in the car external pressure, to take environmental amenity property in the assurance car.

Another design goal is, under the prerequisite that the pipeline air-tightness requires in guaranteeing car, can in the short period of time, promptly realize the adjusting of Pneumatic pressure in the vent line.

For realizing above-mentioned design goal, described ventilation system Pneumatic pressure fender guard mainly includes:

Be arranged at controller, pressure balancing tank and compressor protection switch in the ventilation circulation line.

Wherein, controller connects the also interior pipeline of inspection vehicle, the outer pipeline in-to-in Pneumatic pressure of car, and controller connects the compressor protection switch that is used for regulating ventilation circulation line Pneumatic pressure;

Pressure balancing tank is arranged between interior pipeline of car and the controller.

Like above-mentioned basic scheme, compressor protection switch drives the device at action terminal for using pressurized air as source of the gas.Change according to the difference of pressure inside and outside the car; Pressurized air by controller control and supply pressure protective valve; And then carry out targetedly that fresh wind port is closed with useless row's mouth or the switching of opening; Thereby be the influence that blocking-up external pressure ripple causes environment inside car pressure, make the interior noise of car decrease, guarantee to take the environmental amenity degree.

Consider the actual use needs of Redundancy Design, can in the Pneumatic pressure fender guard, be provided with two controllers that are parallel in the ventilation circulation line.

For improve further in the car, the variation precision of the outer pneumatic pressure difference of car, prevent because of the spurious signal maloperation occurring; The innovative approach that can take is that described pressure balancing tank has tank body, connects the interior air intlet of car of pipeline in the car and the air discharge port that connects controller.

Air intlet directly communicates with the interior air of car in the car of pressure balancing tank, changes to respond to interior pressure exactly, thereby obtains stable vehicle internal pressure numerical value, can avoid some unnecessary interior pressures to change the action that causes compressor protection switchs.

For controlling the Pneumatic pressure balance in the ventilation circulation line rapidly exactly, can take following refinement and preferred version to compressor protection switch:

Compressor protection switch has the air plate that connects the ventilation circulation line, and air plate is provided with the breather port by seal bar control unlatching or closed condition;

Installation one is communicated with and is controlled by the air-operated solenoid valve of controller on air plate, and air-operated solenoid valve connects compressed air inlet and cylinder, and the drive end of cylinder connects seal bar.

As above content, the utility model ventilation system Pneumatic pressure fender guard has the following advantages and beneficial effect:

1, in ventilation system, increases the Pneumatic pressure that detects and control new wind inlet, outlet port place effectively; Thereby improve the control ability that is directed against pipeline inner pressure fluctuation in the car when car external pressure changes greatly significantly, be able to guarantee take in the car environmental amenity property.

2, the Global Macros device can be in taking into account car pipeline air-tightness and the Pneumatic pressure quick performance of regulating, noise is able to control in the reasonable scope effectively in the car when sailing tunnel or meeting at a high speed.

Description of drawings

The following accompanying drawing of existing combination is done explanation further to the utility model;

Fig. 1 is the schematic layout pattern of Pneumatic pressure fender guard;

Fig. 2 is the scheme drawing of said controller;

Fig. 3 is the scheme drawing of said pressure balancing tank;

Fig. 4 is the scheme drawing of said compressor protection switch;

Extremely shown in Figure 4 like Fig. 1, pipeline 11, the outer pipeline 12 of car, control module 13, interior pressure inlet 14, car external pressure inlet 15, service battery's interface 16, electric interfaces 17, air discharge port 21, tank body 22, the interior air intlet 23 of car, air plate 31, cylinder 32, seal bar 33, air-operated solenoid valve 34 and compressed air inlet 35 in controller 1, pressure balancing tank 2, compressor protection switch 3, the car.

The specific embodiment

Embodiment 1, and to shown in Figure 4, described ventilation system Pneumatic pressure fender guard mainly includes, and is arranged at controller 1 and the pressure balancing tank 2 and the compressor protection switch 3 of 2 parallel connections in the ventilation circulation line like Fig. 1.

Wherein, pipeline 11, the outer pipeline 12 in-to-in Pneumatic pressures of car in controller 1 connection and the inspection vehicle, controller 1 connects compressor protection switch 3, and pressure balancing tank 2 is arranged between interior pipeline 11 of car and the controller 1.

Pressure balancing tank 2 has tank body 22 and connects the interior air intlet 23 of car of pipeline 11 in the car, the air discharge port 21 of connection controller 1.

Compressor protection switch 3 has the air plate 31 that connects the ventilation circulation line, and air plate 31 is provided with the breather port by seal bar 33 control unlatchings or closed condition; Installation one is communicated with and is controlled by the air-operated solenoid valve 34 of controller 1 on air plate 31, and air-operated solenoid valve 34 connects compressed air inlet 35 and cylinders 32, and the drive end of cylinder 32 connects seal bar 33.

Control the open and close of the power supply of air-operated solenoid valve 34 through controller 1 with control air-operated solenoid valve 34; Thereby control compressed-air supply cylinder 32; The action of piston can drive the action of seal bar 33 in the cylinder 32, and is opened and the quantity and the device that seal the breather port in the air plate 31 by seal bar 33.

Claims

1. ventilation system Pneumatic pressure fender guard is characterized in that: include the controller (1), pressure balancing tank (2) and the compressor protection switch (3) that are arranged in the ventilation circulation line,

Controller (1) connects the also interior pipeline (11) of inspection vehicle, outer pipeline (12) the in-to-in Pneumatic pressure of car, and controller (1) connects the compressor protection switch (3) that is used for regulating ventilation circulation line Pneumatic pressure;

Pressure balancing tank (2) is arranged between interior pipeline (11) of car and the controller (1).

2. ventilation system Pneumatic pressure fender guard according to claim 1 is characterized in that: be provided with two controllers (1) that are parallel in the ventilation circulation line.

3. ventilation system Pneumatic pressure fender guard according to claim 1 and 2 is characterized in that: described pressure balancing tank (2) has tank body (22), connects the interior air intlet (23) of car of pipeline (11) in the car and the air discharge port (21) that connects controller (1).

4. ventilation system Pneumatic pressure fender guard according to claim 1 and 2; It is characterized in that: described compressor protection switch (3) has the air plate (31) that connects the ventilation circulation line, and air plate (31) is provided with the breather port by seal bar (33) control unlatching or closed condition;

Go up the air-operated solenoid valve (34) of a connection being installed and being controlled by controller (1) at air plate (31), air-operated solenoid valve (34) connects compressed air inlet (35) and cylinder (32), and the drive end of cylinder (32) connects seal bar (33).