Anti-icing structure of valve body and valve body for air brake

Abstract

The utility model belongs to the technical field of air pressure brake, concretely relates to a valve body's anti -icing structure and be used for air pressure brake valve body, including joint body and heating element, the joint body inside is provided with air inlet channel, and the joint body is located the one end of air inlet channel and is provided with the first connecting head for connecting with the valve body air inlet, the joint body is located the other end of air inlet channel and is provided with the second connecting head for connecting with gas source pipeline, heating element sets up in the joint body inside and is located air inlet channel side. The utility model does not need to carry out the modification design to the valve body, and it is simple and convenient to install, and the universality is higher, can reduce the design cost of air pressure brake system on the basis of effectively realizing the anti -icing effect, and can be directly applied to the air pressure brake system of in -service vehicle, does not need to replace the valve body of air pressure brake system of in -service vehicle, and the engineering quantity is small, and the setting difficulty and cost are lower.

Description

Technical Field

[0001] This utility model belongs to the field of pneumatic braking technology, specifically relating to an anti-icing structure for a valve body and a valve body used for pneumatic braking. Background Technology

[0002] Pure electric city buses generally use air-pressure braking. The energy source for the air-pressure braking system is high-pressure gas generated by an air compressor. Even after cooling and drying, the high-temperature, high-pressure gas still contains a certain amount of moisture. This moisture will condense into water when it cools. The valve bodies of the four-circuit protection valve and differential relay valve in the air-pressure braking system have complex structures and are prone to condensation. In extremely cold winter weather (such as below 0°C), the condensation inside the valve body will freeze, causing an unstable air supply to the air tank. This can lead to situations such as passenger doors not opening or the vehicle locking up, posing certain safety risks.

[0003] To address this, existing technologies offer several solutions to prevent valve body icing. A common approach is to install heating elements on the valve body to heat the high-pressure gas entering the valve body in low-temperature environments, preventing condensation and freezing. However, in existing technologies, the heating elements are generally integrated into the valve body housing, requiring corresponding design modifications for different valve bodies, resulting in high development costs and low versatility. Furthermore, for in-service vehicles without valve body icing design features, resolving the icing problem necessitates replacing the valve body, leading to significant engineering work and high costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an anti-icing structure for valve bodies in in-service vehicles that does not require modification of the valve body design, has higher versatility, effectively achieves anti-icing effect, is easy to set up and low in cost, and can be directly applied to valve bodies for air pressure braking.

[0005] The present invention provides an anti-icing structure for a valve body, comprising a connector body and a heating element. The connector body has an air intake channel inside, and a first connector for connecting to the air inlet of the valve body is provided at one end of the air intake channel. A second connector for connecting to an air source pipeline is provided at the other end of the air intake channel. The heating element is disposed inside the connector body and located on the side of the air intake channel.

[0006] Furthermore, it also includes a temperature control switch, which is disposed on the side of the connector body and electrically connected to the heating element.

[0007] Furthermore, the side of the connector body is provided with a protrusion, and the heating element is disposed within the protrusion.

[0008] Furthermore, the side of the protrusion is provided with a mounting hole, the heating element is disposed in the mounting hole, and one end of the heating element with a power cord is located outside the protrusion.

[0009] Furthermore, the axial direction of the mounting hole is different from the axial direction of the air intake channel.

[0010] Furthermore, the heating element has a power cord at one end with a diameter larger than the diameter of the mounting hole, and a first sealing ring is provided between that end of the heating element and the protrusion.

[0011] Furthermore, both the first connector and the second connector are provided with threads on their sides. The first connector is connected to the air inlet of the valve body via the threads, and the second connector is connected to the air source pipeline via the threads.

[0012] Furthermore, a nut is threadedly connected to the side of the first connector, and a second sealing ring is provided at the end of the nut facing the air inlet of the valve body.

[0013] Furthermore, the connector body is made of a thermally conductive material.

[0014] The present invention also provides a valve body for pneumatic braking, wherein the air inlet of the valve body is provided with an anti-icing structure as described above.

[0015] The beneficial effects of this invention are that the anti-icing structure of the valve body is directly connected between the air inlet of the valve body and the air source pipeline, forming a channel for high-pressure gas to enter the air inlet of the valve body along the air source pipeline. A heating element heats the high-pressure gas entering the air inlet of the valve body, preventing moisture carried in the high-pressure gas from condensing and freezing inside the valve body in extremely cold weather. Simultaneously, the heat carried by the high-pressure gas also melts the ice that has already formed inside the valve body. Furthermore, this invention requires no modification to the valve body design, making installation simple and convenient, and offering greater versatility. While effectively achieving the anti-icing effect, it reduces the design cost of the air pressure braking system and can be directly applied to the air pressure braking systems of in-service vehicles without replacing the valve body of existing air pressure braking systems. This results in less engineering work, lower installation difficulty, and lower costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the anti-icing structure of the valve body of this utility model.

[0017] Figure 2 This is a longitudinal sectional view of the connector body of this utility model.

[0018] In the diagram: 1. Connector body; 11. Air intake channel; 12. First connector; 13. Second connector; 14. Protrusion; 15. Mounting hole; 2. Heating element; 3. Temperature control switch; 4. First sealing ring; 5. Nut; 6. Second sealing ring. Detailed Implementation

[0019] like Figure 1 and Figure 2 As shown, this utility model provides an anti-icing structure for a valve body, including a connector body 1 and a heating element 2. The connector body 1 has an air inlet channel 11 inside, and a first connector 12 is located at one end of the air inlet channel 11, connecting to the air inlet of the valve body. The other end of the connector body 1 has a second connector 13, also located at the other end of the air inlet channel 11, connecting to a gas source pipeline to connect the gas source pipeline to the air inlet of the valve body. The air inlet channel 11 forms a channel for high-pressure gas to enter the air inlet of the valve body along the gas source pipeline. This gas source pipeline is the high-pressure gas delivery pipeline. The heating element 2 is located inside the connector body 1 and on the side of the air inlet channel 11.

[0020] The anti-icing structure of the valve body provided by this utility model is directly connected between the air inlet of the valve body and the air source pipeline, forming a channel for high-pressure gas to enter the air inlet of the valve body along the air source pipeline. The heating element 2 heats the high-pressure gas entering the air inlet of the valve body, preventing moisture carried in the high-pressure gas from condensing and freezing inside the valve body in extremely cold weather. Simultaneously, the heat carried by the high-pressure gas also melts the ice that has already formed inside the valve body. Furthermore, this utility model requires no modification to the valve body design, making installation simple and convenient, and offering greater versatility. While effectively achieving the anti-icing effect, it reduces the design cost of the air pressure braking system and can be directly applied to the air pressure braking systems of in-service vehicles without replacing the valve bodies of existing air pressure braking systems. This results in less engineering work, lower installation difficulty, and lower costs.

[0021] This invention also includes a temperature control switch 3, which is disposed on the side of the connector body 1 and electrically connected to the heating element 2. The switch is used to connect the power supply when the ambient temperature reaches a first temperature value and disconnect the power supply when the ambient temperature reaches a second temperature value. The aforementioned ambient temperature specifically refers to the temperature of the connector body 1. The first temperature value is specifically the temperature at which ice can form, for example, 0°C. The second temperature value is used to prevent the anti-icing structure from overheating, for example, 30°C, to ensure reliability and safety during use.

[0022] The connector body 1 has a protrusion 14 on its side, and the heating element 2 is disposed within the protrusion 14. This design provides sufficient space on the side of the connector body 1 to install the heating element 2, reducing the difficulty of installing the heating element 2. Specifically, the protrusion 14 has a mounting hole 15 on its side, and the heating element 2 is disposed within the mounting hole 15, with one end of the heating element 2 having a power cord located outside the protrusion 14. Compared to methods where the heating element 2 is embedded or integrally disposed within the protrusion 14, this invention facilitates the installation and removal of the heating element 2, thereby simplifying maintenance. The heating element 2 can be a heating tube or other electric heating element.

[0023] The axial direction of the mounting hole 15 is different from the axial direction of the air intake channel 11. For example, the axial direction of the air intake channel 11 is vertical, while the axial direction of the mounting hole 15 is horizontal. Based on this setting, the power cord of the heating element 2 can be prevented from being led out along the direction of the first connector 12 or the second connector 13, thereby avoiding interference.

[0024] The heating element 2 has a power cord at one end with a diameter larger than the mounting hole 15, and a first sealing ring 4 is provided between this end of the heating element 2 and the protrusion 14. This improves the airtightness of the mounting hole 15 after the heating element 2 is installed. In this invention, the fixing method between the heating element 2 and the protrusion 14 can be determined according to actual needs. Without affecting the function of the heating element 2, it can be selected as snap-fit, screw connection, or adhesive fixing according to the actual situation.

[0025] Both the first connector 12 and the second connector 13 have threads on their sides. The first connector 12 is connected to the air inlet of the valve body via the threads, and the second connector 13 is connected to the air source pipeline via the threads, making the connection more convenient. Specifically, the threads are external threads, located on the outer sides of the first connector 12 and the second connector 13.

[0026] The first connector 12 has a nut 5 threadedly connected to its side. The nut 5 has a second sealing ring 6 at the end facing the air inlet of the valve body. Based on this configuration, when the first connector 12 is connected to the air inlet of the valve body via the thread, rotating the nut 5 causes the second sealing ring 6 to abut against the end face of the air inlet of the valve body, thereby improving the airtightness of the connection between the first connector 12 and the air inlet of the valve body.

[0027] The connector body 1 is made of a thermally conductive material, such as metal or other thermally conductive materials. This allows the heat generated by the heating element 2 to be quickly conducted to the air intake channel 11 to heat the high-pressure gas.

[0028] This invention also provides a valve body for pneumatic braking, wherein the air inlet of the valve body is provided with the anti-icing structure described above. Due to this anti-icing structure, the high-pressure gas entering the valve body's inlet can be heated, preventing moisture carried in the high-pressure gas from condensing and freezing inside the valve body in extremely cold weather. Simultaneously, the heat carried by the high-pressure gas can also melt the ice that has already formed inside the valve body. Furthermore, this invention requires no redesign of the valve body, effectively achieving the anti-icing effect while reducing design costs, installation difficulty, and cost.

[0029] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0030] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. An anti-icing structure for a valve body, characterized in that, The device includes a connector body (1) and a heating element (2). The connector body (1) has an air intake channel (11) inside. One end of the connector body (1) located in the air intake channel (11) is provided with a first connector (12) for connecting to the air intake port of the valve body. The other end of the connector body (1) located in the air intake channel (11) is provided with a second connector (13) for connecting to the air source pipeline. The heating element (2) is located inside the connector body (1) and on the side of the air intake channel (11).

2. The anti-icing structure of the valve body as described in claim 1, characterized in that, It also includes a temperature control switch (3), which is disposed on the side of the connector body (1) and electrically connected to the heating element (2).

3. The anti-icing structure of the valve body as described in claim 1 or 2, characterized in that, The side of the connector body (1) is provided with a protrusion (14), and the heating element (2) is disposed in the protrusion (14).

4. The anti-icing structure of the valve body as described in claim 3, characterized in that, The side of the protrusion (14) is provided with a mounting hole (15), the heating element (2) is disposed in the mounting hole (15), and one end of the power cord of the heating element (2) is located outside the protrusion (14).

5. The anti-icing structure of the valve body as described in claim 4, characterized in that, The axial direction of the mounting hole (15) is different from that of the air intake channel (11).

6. The anti-icing structure of the valve body as described in claim 4, characterized in that, The heating element (2) has a power cord with a diameter greater than that of the mounting hole (15), and a first sealing ring (4) is provided between the heating element (2) and the protrusion (14).

7. The anti-icing structure of the valve body as described in any one of claims 1, 2, 4-6, characterized in that, Both the first connector (12) and the second connector (13) are provided with threads on their sides. The first connector (12) is connected to the air inlet of the valve body through the threads, and the second connector (13) is connected to the air source pipeline through the threads.

8. The anti-icing structure of the valve body as described in claim 7, characterized in that, The first connector (12) has a nut (5) threadedly connected to its side. The nut (5) is used to provide a second sealing ring (6) at the end facing the air inlet of the valve body.

9. The anti-icing structure of the valve body as described in any one of claims 1, 2, 4-6, characterized in that, The connector body (1) is made of a thermally conductive material.

10. A valve body for pneumatic braking, characterized in that, The air inlet of the valve body is provided with an anti-icing structure as described in any one of claims 1-9.

Images