High-precision flow-controllable electromagnetic exhaust valve for controllable train tail

Abstract

The utility model provides a high-precision flow-controllable electromagnetic exhaust valve for a controllable train tail, and belongs to the technical field of exhaust valves. The problem that detection is inaccurate due to the fact that an existing train tail electromagnetic exhaust valve structure is prone to being damaged by dust is solved. Comprising an electromagnetic valve body and a detection valve body, four independent and mutually-communicated electromagnetic valve cavities are formed in the electromagnetic valve body, a valve element assembly is installed in each electromagnetic valve cavity, an electromagnetic valve body cover is installed at the top of the electromagnetic valve body, and electromagnetic coils corresponding to the valve element assemblies are arranged on the electromagnetic valve body cover; an electromagnetic valve is mounted on the electromagnetic coil, and an air outlet is formed in an electromagnetic valve body; the detection valve body is internally provided with three independent detection cavities, each detection cavity is internally provided with an air pressure sensor, the detection valve body is provided with an air inlet, and the detection valve body is communicated with one of the electromagnetic valve cavities; detection chambers of the three air pressure sensors are higher than the horizontal plane of the air inlet; the air exhaust device is applied to air exhaust on the train air pipe.

Description

Technical Field

[0001] The utility model provides a high-precision flow-controllable electromagnetic exhaust valve for a controllable train tail, belonging to the technical field of exhaust valves. Background Art

[0002] Most existing exhaust valves have a single-coil, single-valve-body, single-air-pressure-sensor structure or a dual-coil, dual-valve-body, single-air-pressure-sensor structure with simple control logic. After long-term use, a single air-pressure sensor cannot accurately measure air pressure due to aging, causing false operation during driving and resulting in traffic safety accidents.

[0003] The existing electromagnetic exhaust valve at the end of the train is easily stuck by dust and foreign objects, causing the exhaust valve to fail to operate. Especially on the coal transportation line, due to the flying coal dust, the ordinary electromagnetic exhaust valve is very easy to be stuck by coal dust, which poses a huge safety hazard to the train braking. The detection hole of the wind pressure sensor is also easily blocked, resulting in inaccurate detection. Utility Model Content

[0004] In order to solve the problem that the wind pressure sensor of the existing electromagnetic exhaust valve structure at the end of a row is installed at a position close to the air inlet and at the same height as the air inlet, and the wind pressure sensor of this structure is easily damaged by dust, resulting in inaccurate detection, the utility model proposes a controllable high-precision controllable flow electromagnetic exhaust valve for the end of a row, the purpose of which is to achieve high-precision wind pressure detection through hardware improvements or improvements to the combined connection of hardware modules and / or circuits.

[0005] The technical solution adopted by the utility model is: a high-precision controllable flow electromagnetic exhaust valve for a controllable train tail, comprising a solenoid valve body and a detection valve body, wherein four independent and interconnected solenoid valve chambers are provided inside the solenoid valve body, a set of valve core components is installed in each solenoid valve chamber, a solenoid valve body cover is installed on the top of the solenoid valve body, a solenoid coil corresponding to the valve core component is provided on the solenoid valve body cover, a solenoid valve is installed on the solenoid coil, and an air outlet is provided on the solenoid valve body;

[0006] The detection valve body is provided with three independent detection chambers, each detection chamber is equipped with a wind pressure sensor, the detection valve body is provided with an air inlet, and the detection valve body is connected to one of the solenoid valve chambers;

[0007] The air inlet is connected to the detection chambers of the three wind pressure sensors, the solenoid valve chamber corresponding to the detection valve body, the three solenoid valve chambers in the solenoid valve body, and the air outlet;

[0008] The detection chambers of the three wind pressure sensors are higher than the horizontal plane of the air inlet.

[0009] Furthermore, the valve core assembly includes a valve core, a valve stem and a return spring. The valve stem is inserted into the valve core, and the return spring is installed between the lower end of the valve stem and the shell of the electromagnetic valve body.

[0010] Furthermore, four independent and interconnected solenoid valve chambers are arranged in a grid pattern.

[0011] Furthermore, the four solenoid valves include one master exhaust solenoid valve and three slave exhaust control valves.

[0012] Furthermore, the solenoid valve chamber of the main exhaust solenoid valve is communicated with the detection valve body.

[0013] Furthermore, the wind pressure sensor is installed in the detection valve body through the wind pressure sensor gland.

[0014] Furthermore, the postures of the three wind pressure sensors are consistent.

[0015] Furthermore, three air outlets are provided.

[0016] Furthermore, the air inlet is sealedly connected to the air duct at the rear of the train.

[0017] Furthermore, a detection valve body cover is provided on the detection valve body, and wind pressure sensor sealing sleeves corresponding to the three wind pressure sensors are provided on the detection valve body cover.

[0018] The beneficial effects of the present invention compared to the prior art are:

[0019] 1. This structure uses three wind pressure sensors, each of which is in an independent detection chamber. The three sensors are in the same posture. After the three independent sensors detect the wind pressure value, the accurate wind pressure value is obtained by taking two out of three.

[0020] 2. The installation height of the wind pressure sensor of this structure is higher than the horizontal plane of the air inlet, thereby preventing large particles of dust from contaminating and interfering with the sensor;

[0021] 3. This structure solenoid valve adopts a grid layout, which makes the overall structure more compact and reduces the installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0024] Figure 2 for Figure 1 Front view of

[0025] Figure 3 for Figure 1 Left view of;

[0026] Figure 4 for Figure 1 A top view of

[0027] Figure 5 for Figure 2 Middle AA section view;

[0028] Figure 6 and Figure 7 This is the exploded view of the electromagnetic exhaust valve;

[0029] In the figure: 1 is the solenoid valve body, 2 is the detection valve body, 3 is the wind pressure sensor cover, 4 is the wind pressure sensor, 5 is the detection valve body cover, 6 is the wind pressure sensor sealing sleeve, 7 is the electromagnetic coil, 8 is the first solenoid valve, 9 is the second solenoid valve, 10 is the third solenoid valve, 11 is the fourth solenoid valve, 12 is the solenoid valve body cover, 13 is the valve core, 14 is the valve stem, 15 is the return spring, and 16 is the solenoid valve chamber. DETAILED DESCRIPTION

[0030] like Figures 1 to 7 As shown, the utility model provides a high-precision controllable flow electromagnetic exhaust valve for a controllable column tail, comprising: a solenoid valve body 1 and a detection valve body 2, wherein a solenoid valve body cover 12 is provided on the top of the solenoid valve body 1, and a detection valve body cover 5 is provided on the top of the detection valve body 2; four mutually connected and independent solenoid valve chambers 16 are installed inside the solenoid valve body 1, and a valve core 13, a valve stem 14 and a return spring 15 are installed in each solenoid valve chamber 16, wherein the valve stem 14 is inserted into the valve core 13, one end of the return spring 15 is located at the lower end of the valve stem 14 to provide power for the valve stem 14, and the other end of the return spring 15 is located at the bottom of the shell of the solenoid valve body 1; an air outlet is provided on the side of the solenoid valve body 1; a corresponding electromagnetic coil 7 is installed on the solenoid valve body cover 12, and a solenoid valve is installed on the electromagnetic coil 7, and the solenoid valve and the valve core 13 in the solenoid valve body 1 are one-to-one corresponding.

[0031] Specifically, there are four solenoid valves in this embodiment, which are as follows: Figure 1 and 6 The first solenoid valve 8, second solenoid valve 9, third solenoid valve 10, and fourth solenoid valve 11 are shown, and the corresponding solenoid valve body 1 is internally installed with four sets of valve cores 13, valve stems 14, and return springs 15. The valve cores 13 of the first solenoid valve 8, second solenoid valve 9, third solenoid valve 10, and fourth solenoid valve 11 are respectively located in four independent solenoid valve chambers 16. The first solenoid valve 8 is the main exhaust control valve, and the second solenoid valve 9, third solenoid valve 10, and fourth solenoid valve 11 are the slave exhaust control valves. The solenoid valve chamber 16 of the first solenoid valve 8 is connected to the detection valve body 2. Since there are three slave exhaust control valves, three air outlets are provided.

[0032] A wind pressure sensor 4 is installed within the test valve body 2. A wind pressure sensor gland 3 is fixed to the surface of the wind pressure sensor 4, securing the wind pressure sensor 4 to the test valve body 2. A wind pressure sensor sealing sleeve 6 is fixed to the test valve body cover 5. An air inlet is provided on the side of the test valve body 2.

[0033] Specifically, in this embodiment, three wind pressure sensors 4 are provided, and the three wind pressure sensors 4 are respectively provided in independent detection chambers. The detection valve body 2 is communicated with the solenoid valve chamber 16 of the valve core 13 of the first solenoid valve 8 .

[0034] The air inlet is interconnected with the independent detection chambers of the three wind pressure sensors 4, the chamber of the detection valve body 2 corresponding to the valve core 13, the three chambers of the solenoid valve body 1 corresponding to the valve core 13, and the air outlet. All other openings are sealed. The detection chambers of the three wind pressure sensors 4 are higher than the horizontal plane of the air inlet and are independent detection chambers. The posture of the three wind pressure sensors 4 is consistent.

[0035] The working process of the electromagnetic exhaust valve of the present invention is as follows: the air duct at the rear of the train is sealed and connected to the air inlet of the electromagnetic exhaust valve. Under normal conditions, the first electromagnetic valve 8 of the main exhaust control of the rear multi-connected electromagnetic exhaust valve is closed, and three wind pressure sensors 4 independently detect the wind pressure at the rear of the train. The three wind pressure values ​​are taken out to obtain an accurate wind pressure value by taking two out of three. When the train needs to be exhausted, one, two or three of the second electromagnetic valve 9, the third electromagnetic valve 10 and the fourth electromagnetic valve 11 for exhaust can be opened respectively according to the required exhaust volume to accurately control the exhaust flow rate.

[0036] The utility model uses three wind pressure sensors 4 to detect wind pressure, thereby increasing the accuracy of the wind pressure value; and the installation height of the wind pressure sensor 4 is higher than the horizontal plane of the air inlet, thereby further increasing the accuracy of the wind pressure value.

[0037] Regarding the specific structure of the present invention, it should be noted that the connection relationship between the various component modules adopted in the present invention is definite and feasible. Except for the special instructions in the embodiments, the specific connection relationship can bring about corresponding technical effects and solve the technical problems raised by the present invention without relying on the execution of the corresponding software program. The components, modules, models of specific components appearing in the present invention, the connection methods between each other, and the conventional usage methods and expected technical effects brought about by the above-mentioned technical features, except for the specific instructions, all belong to the disclosed contents in patents, journal articles, technical manuals, technical dictionaries, and textbooks that can be obtained by technical personnel in this field before the application date, or belong to the existing technologies such as conventional technology and common knowledge in this field, and there is no need to elaborate, so that the technical solution provided in this case is clear, complete, and feasible, and the corresponding physical products can be reproduced or obtained based on this technical means.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-precision, controllable flow electromagnetic exhaust valve for a controllable train tail, comprising a solenoid valve body (1) and a detection valve body (2), characterized in that: The solenoid valve body (1) is provided with four independent and mutually connected solenoid valve chambers (16), each of which is provided with a valve core assembly, a solenoid valve body cover (12) is provided on the top of the solenoid valve body (1), a solenoid coil (7) corresponding to the valve core assembly is provided on the solenoid valve body cover (12), a solenoid valve is provided on the solenoid coil (7), and an air outlet is provided on the solenoid valve body (1); The detection valve body (2) is provided with three independent detection chambers, each detection chamber is equipped with a wind pressure sensor (4), an air inlet is provided on the detection valve body (2), and the detection valve body (2) is connected to one of the solenoid valve chambers (16); The air inlet is connected to the detection chambers of the three wind pressure sensors (4), the electromagnetic valve chamber (16) corresponding to the detection valve body (2), the three electromagnetic valve chambers (16) in the electromagnetic valve body (1), and the air outlet; The detection chambers of the three wind pressure sensors (4) are higher than the horizontal plane of the air inlet.

2. A high-precision, flow-controllable electromagnetic exhaust valve for a controllable train tail according to claim 1, characterized in that: The valve core assembly comprises a valve core (13), a valve stem (14) and a return spring (15), wherein the valve stem (14) is inserted into the valve core (13), and the return spring (15) is installed between the lower end of the valve stem (14) and the shell of the electromagnetic valve body (1).

3. The high-precision, flow-controllable electromagnetic exhaust valve for a controllable train tail according to claim 1, characterized in that: Four independent and interconnected solenoid valve chambers (16) are arranged in a grid pattern.

4. The high-precision, flow-controllable electromagnetic exhaust valve for a controllable train tail according to claim 1, characterized in that: The four solenoid valves include one master exhaust solenoid valve and three slave exhaust control valves.

5. The high-precision controllable flow electromagnetic exhaust valve for controllable train tail according to claim 4, characterized in that: The solenoid valve chamber (16) of the main exhaust solenoid valve is communicated with the detection valve body (2).

6. The high-precision, flow-controllable electromagnetic exhaust valve for a controllable train tail according to claim 1, characterized in that: The wind pressure sensor (4) is installed in the detection valve body (2) through the wind pressure sensor cover (3).

7. The high-precision, flow-controllable electromagnetic exhaust valve for a controllable train tail according to claim 1, characterized in that: The three wind pressure sensors (4) have the same posture.

8. The high-precision, flow-controllable electromagnetic exhaust valve for a controllable train tail according to claim 4, characterized in that: There are three air outlets.

9. The high-precision, flow-controllable electromagnetic exhaust valve for a controllable train tail according to claim 1, characterized in that: The air inlet is sealed and connected to the air duct at the rear of the train.

10. The high-precision flow controllable electromagnetic exhaust valve for controllable train tail according to claim 1, characterized in that: The detection valve body (2) is provided with a detection valve body cover (5), and the detection valve body cover (5) is provided with wind pressure sensor sealing sleeves (6) corresponding to the three wind pressure sensors (4).

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