CN201587414U

CN201587414U - Exhaust valve for brake of locomotive

Info

Publication number: CN201587414U
Application number: CN201020100821XU
Authority: CN
Inventors: 孙光锋
Original assignee: Individual
Current assignee: ZHEJIANG EMC PNEUMATIC TECHNOLOGY Co Ltd
Priority date: 2010-01-19
Filing date: 2010-01-19
Publication date: 2010-09-22
Anticipated expiration: 2020-01-19

Abstract

An exhaust valve for a brake of a locomotive is provided, a pressure sensor is fixed on a valve body with a joint and an exhaust outlet, a solenoid valve composed of a screw cap, a coil and a pilot iron core component is fixed on the valve body by a pilot base, the pilot base is provided with a first traverse airway C fit with the pilot iron core component and communicated with the pilot base and a second transverse airway B communicated with an air cavity D on the pilot base, a vertical airway F on the valve body is communicated with the second transverse airway B, a valve body bleed hole E is fit with a membrane set and a spring. The present solenoid valve directly open the valve body bleed hole, thus the required current and power is big, the energy consumption is high, the bleed hole is little, the flow is less and the exhaust speed is slow. Herein, only solenoid valve opens the airway opening as a change-over switch, thus the desired current, power and volume is little and the energy consumption is low. The bleed hole is opened and closed by the opening and closing of the membrane component, thus the cavity, the bleed hole and the flow are big and the exhaust speed is rapid, the air is cleanly eliminated and no residual air exists, the brake ineffectiveness due to the icing is prevented, therefore the use is safer.

Description

The locomotive brake blow off valve

Technical field

The utility model relates to the safety device of installing on a kind of railway locomotive, and particularly a kind of interior gas of locomotive air-pressure duct that can make all drains, and prevents from winter to get rid of the locomotive brake blow off valve that freezes because of the gas end.

Background technology

Existing railway is through speed-raising several times, the speed of a motor vehicle is very fast, simultaneously brake speed is also had relatively high expectations, because of now adopting aerodynamic brake, the gas of a residual part also in cylinder or valve often, usual little to the influence of brake gear, but to winter temperature when very low, remain in that contained humidity can freeze in the gas in cylinder and the valve, freeze together with valve, to cause brake failure, therefore have very big potential safety hazard.

The patent No. 01259090.8 " railway brake blow off valve " is though provide a kind of brake blow off valve, but its deflation hole is very little, gas flow is little, and directly opens deflation hole by electromagnetic valve and carry out exhaust, so the electromagnetic valve power demand is big, electric current is big, energy consumption is high, volume is big.

Patent No. 02289361.X " railway brake blow off valve ", combine by two cover guide blows off valve, pressure transformer and one-way exhaust valve, in priority valve, be provided with pilot gas passage, gas storage storehouse, up on guide piston and check valve, make the interior gas Evacuable of valve, air pressure is zero, prevent that valve body from freezing, two cover guide blows off valve can be worked simultaneously and effectively be prevented the generation of accident, but this valve is a combine valve, use capable of being combined also can be used separately, its structure is complicated, and volume is big, and part is many, and deflation hole is little, free air capacity is little, and speed of response is slow, and energy consumption is big.

Summary of the invention

Technical problem to be solved in the utility model is: a kind of locomotive brake blow off valve is provided, and the deflation hole of this valve is big, free air capacity is big, exhaust velocity is fast, but required electric current is little, power is little, energy consumption is low, uses the work safety and reliability.

The technical scheme in the invention for solving the above technical problem is: the locomotive brake blow off valve, be fixed on the valve body that has joint, exhausr port by pressure sensor, the electromagnetic valve that constitutes by nut, coil, guide's core assembly, be fixed on the valve body by first guide bracket, have on the described first guide bracket and cooperate the first horizontal flue C that is interlinked to the outside with first guide bracket with guide's core assembly, the second horizontal flue B that communicates with first guide bracket upper gas chamber D in addition, have uptake ventilator F to communicate with the second horizontal flue B on the described valve body, valve body deflation hole E cooperates with diaphragm unit, spring.

Compared with prior art, advantage of the present utility model is: formerly directly open the valve body deflation hole with electromagnetic valve, therefore required electric current is big, power is big, the energy consumption height, and former deflation hole is little, flow is little, exhaust velocity is very slow.Now only open gas port and do the change-over switch use with electromagnetic valve, therefore the required electric current of electromagnetic valve is little, power is little, energy consumption is low, volume is little, and open deflation hole is to finish by the folding that starts diaphragm unit, its cavity is big, deflation hole is big, flow is big, exhaust velocity is very fast, air scavenge is not totally stayed residual volume, this electromagnetic valve can one uses separately, also can two use together, another set of normal operation when assurance one cover is malfunctioning, prevent the generation of accident, pressure sensor is installed on the blow off valve system pressure delta data can be provided at any time, be convenient to regulate, guarantee the normal operation of blow off valve.

Description of drawings

Fig. 1, structural representation of the present utility model.

The left view of Fig. 2, Fig. 1.

Fig. 3, static working state figure of the present utility model.

Fig. 4, energising working state figure of the present utility model.

The specific embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is further described.

Electromagnetic valve by nut 11, coil 10, guide's core assembly 9 constitute is fixed on the valve body 5 by first guide bracket 8.

Have on elder generation's guide bracket 8 and the extraneous first horizontal flue C that communicates, the horizontal flue mouth cooperates with guide's core assembly 9.

The upper surface that pressure sensor 12 is fixed on valve body 5 communicates with valve pocket A, valve body 5 one ends with cover 3, snap ring 4, seal ring seal, with its corresponding end is that exhausr port R, valve body deflation hole E cooperate with diaphragm unit 6, the valve body upper surface has uptake ventilator F, the second horizontal flue B and upper gas chamber D communicate on this uptake ventilator F and the first guide bracket, the uptake ventilator F and the first horizontal flue C are orthogonal, but do not communicate, not in same plane, as shown in Figure 4.

Valve body 5 lower surface jointings 1, connection port is admission port P.

Diaphragm unit 6 is by rubber pad and press superincumbent backing plate and form with the integral body that fastener is pressed into, and an end of spring 7 is fixed on the diaphragm unit 6, and the other end of spring 7 is fixed on the first guide bracket 8.

Pressurized air enters A chamber in the valve body 5 from the admission port P of joint 1, there is portion gas to enter the epicoele of diaphragm unit 6 from the uptake ventilator F on the valve body, diaphragm unit is under the effect of spring 7 and upper gas chamber D pressure, diaphragm is moved down and make diaphragm unit be close to deflation hole E, then the no gas in exhausr port R place is discharged and is off working state, as shown in Figure 3.

If two covers or a cover electromagnetic valve energising, then guide's core assembly 9 moves up, disengagement contacts with the first horizontal flue C mouth end, promptly open gas port, gas in the upper gas chamber D is discharged to outside the valve body from the first horizontal flue C, the hurried decline of upper gas chamber D internal gas pressure, when valve body 5 chamber pressures during greater than upper gas chamber D internal pressure, the gas of lower air chamber is with diaphragm unit 6 jack-up and press spring 7 upwards, also make diaphragm unit 6 break away from deflation hole E, the gas that enters the A chamber from admission port P just enters the opposite side of valve body 5 through deflation hole E, and outside air extractor duct R is rejected to valve body 5, because of having opened the atmosphere chamber A on the valve body 5, big deflation hole E, then all gas in the valve body is all taken out of and got rid of totally from exhausr port R, can not leave over residual gas, reach the purpose that makes blow off valve energy normal operation, as shown in Figure 4.

Claims

1. locomotive brake blow off valve, be fixed on by pressure sensor (12) and have joint (1), on the valve body (5) of exhausr port (R), by nut (11), coil (10), the electromagnetic valve that guide's core assembly (9) constitutes, be fixed on the valve body (5) by first guide bracket (8), it is characterized in that having on the described first guide bracket (8) and cooperate first horizontal flue (C) that is interlinked to the outside with first guide bracket (8) with guide's core assembly (9), second horizontal flue (B) that communicates with first guide bracket (8) upper gas chamber (D) in addition, there is uptake ventilator (F) to communicate on the described valve body (5), valve body deflation hole (E) and diaphragm unit (6) with second horizontal flue (B), spring (7) cooperates.

2. locomotive brake blow off valve according to claim 1, it is characterized in that second horizontal flue (B) and upper gas chamber (D) communicate on described uptake ventilator (F) and the first guide bracket, uptake ventilator (F) and first horizontal flue (C) are orthogonal, but do not communicate, not in same plane.