A pressure tank for applying sand to a railway locomotive

Abstract

The utility model provides a kind of pressure tank for railway locomotive adds brake sand, it is related to railway locomotive equipment technical field, comprising: tank body, be located in the pressure gas flow guide pipe of the tank body, be located in the conical sand separating device of the tank body inner wall bottom, respectively be located in the conical blanking tube and sand outlet pipe of the both ends of the tank body and external PLC control system;The tank body is hollow, with the accommodation space of preconcerted, it is used to hold sand material;The conical blanking tube side is equipped with pressure air inlet pipe, it is used to introduce compressed air into tank body;The top end operating surface of the pressure gas flow guide pipe is open state, and is equipped with top air inlet hole, and the compressed air enters pressure gas flow guide pipe by top air inlet hole;The utility model makes compressed air can be mixed with sand material fully, enters sand outlet pipe by flow channel under the guidance of conical sand separating device, solves the flow problem of sand material in tank body, realizes the technical effect that sand material can continuously sand supply.

Description

Technical Field

[0001] This utility model relates to the field of railway locomotive equipment technology, and in particular to a pressure tank for adding brake sand to railway locomotives. Background Technology

[0002] Brake sand, also known as locomotive sand, is an auxiliary material used in railway locomotives during operation to enhance the adhesion between the wheels and rails. It is mainly composed of quartz sand. During railway locomotive operation, the use of brake sand is of great significance for improving braking effect and ensuring safety. Traditional railway locomotive brake sand pressure tanks lack effective guidance and power assistance for sand flow. Sand adhesion and sedimentation often obstruct sand flow within the tank, affecting not only timely sand supply but also potentially causing insufficient locomotive braking performance and compromising operational safety. Furthermore, traditional railway locomotive brake sand pressure tanks generally lack intelligent control functions, relying heavily on manual intervention for sand addition and replenishment. This compromises the accuracy and timeliness of sand supply during operation, increasing the complexity of manual management and reducing work efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a pressure tank for adding brake sand to railway locomotives, thereby solving the technical problems existing in the prior art.

[0004] To achieve the aforementioned objectives, the technical solution adopted by this utility model is as follows: A pressure tank for applying brake sand to railway locomotives includes: a tank body, a pressure gas guide pipe disposed within the tank body, a conical sand-distributing device disposed at the bottom of the inner wall of the tank body, conical discharge pipes and sand outlet pipes respectively disposed at both ends of the tank body, and an external PLC control system; the tank body is hollow inside and has a preset receiving space for holding sand; a pressure air inlet pipe is provided on one side of the conical discharge pipe for introducing compressed air into the tank body; the working surface at the top of the pressure gas guide pipe is open and has a top air inlet hole, through which the compressed air enters the pressure gas guide pipe; the pressure gas guide pipe is positioned higher than the horizontal level of the conical discharge pipe; the PLC control system is used to control the working status of each component.

[0005] Furthermore, the pressure gas guide pipe is provided with a gas pipe side opening guide plate, which is located at the top of the cone sand separating device. The cone sand separating device has a preset inclination arc. A flow channel is formed between the gas pipe side opening guide plate and the cone sand separating device, and the flow channel is interconnected with the sand outlet pipe.

[0006] Furthermore, a safety valve is provided on the working surface at the top of the tank, and the safety valve is located on one side of the conical discharge pipe, with a dust discharge valve provided on the opposite side.

[0007] Furthermore, a T-shaped valve is provided at the top of the conical discharge pipe, and a telescopic cylinder is provided on the T-shaped valve. The telescopic end of the telescopic cylinder is connected to a sealing gasket through a cylinder push rod, and the sealing gasket can be tightly connected to the conical discharge pipe; the telescopic cylinder is electrically connected to the PLC control system.

[0008] Furthermore, the tank body has a split structure, which is interconnected by a silo pump flange; the pressure gas guide pipe is lower than the horizontal position of the silo pump flange; the tank body is equipped with a level gauge, which is used to measure the position of sand in the tank body and is electrically connected to the PLC control system.

[0009] Furthermore, the output end of the sand outlet pipe is connected to the connecting hose.

[0010] Compared with the prior art, the present invention has the following beneficial effects: This invention, through the design of a pressure gas guide pipe, a gas pipe side opening guide plate, and a cone-shaped sand separating device, enables compressed air to be fully mixed with sand. Guided by the cone-shaped sand separating device, the air enters the sand outlet pipe through the flow channel, solving the problem of sand flow within the tank and achieving a continuous sand supply. Furthermore, the level gauge and PLC control system enable automated control of automatic stop when the sand is full and automatic replenishment when the tank is low, improving the overall intelligence of the device, reducing manual intervention, lowering labor costs, and increasing the accuracy and efficiency of sand addition. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the internal structure of the present invention; Figure 2 This is an enlarged view of part A of the present invention; In the diagram: 1. Tank body; 2. Dust discharge valve; 3. Conical discharge pipe; 4. Safety valve; 5. Silo pump flange; 6. Pressure gas guide pipe; 7. Conical sand separating device; 8. Sand discharge pipe; 9. Connecting hose; 10. Top air inlet; 11. T-valve; 12. Telescopic cylinder; 13. Sealing gasket; 14. Cylinder push rod; 15. Air pipe side opening guide plate; 16. Level gauge. Detailed Implementation

[0012] To make the content of this utility model easier to understand, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0013] like Figure 1 As shown, this embodiment provides a pressure tank for applying brake sand to railway locomotives, comprising: a tank body 1, a pressure gas guide pipe 6 disposed within the tank body 1, a conical sand-distributing device 7 disposed at the bottom of the inner wall of the tank body 1, a conical material discharge pipe 3 and a sand outlet pipe 8 respectively disposed at both ends of the tank body 1, and an external PLC control system; the tank body 1 is hollow inside and has a preset receiving space for holding sand; a pressure air inlet pipe is provided on one side of the conical material discharge pipe 3 for introducing compressed air into the tank body 1; the tank body 1 is a split structure, which is interconnected by a silo-pump flange 5, which not only facilitates the operation of the pressure tank during manufacturing, transportation and installation, but also provides convenience for subsequent maintenance and repair; the pressure gas guide pipe 6 is lower than the horizontal position of the silo-pump flange 5. This avoids unnecessary interference or damage to the pressure gas guide pipe 6 during subsequent disassembly, installation, or maintenance. The tank 1 is equipped with two level gauges 16, which are used to measure the position of the sand material inside the tank 1 and are electrically connected to the PLC control system. The level gauges 16 can monitor the position information of the sand material inside the tank 1 in real time and accurately, and transmit the position information to the PLC control system in real time, providing data support for the automated operation of the entire device. This is existing technology and will not be elaborated further here. The top working surface of the pressure gas guide pipe 6 is open and has a top air inlet 10. Compressed air enters the pressure gas guide pipe 6 through the top air inlet 10. The pressure gas guide pipe 6 is higher than the horizontal position of the conical discharge pipe 3. To prevent blockage of the pressure gas guide pipe 6 when the conical discharge pipe 3 cannot disconnect to replenish sand into the tank 1 in the event of a PLC control system failure; the PLC control system is used to control the working status of each component. Based on the preset system and the feedback information from the level gauge 16, the PLC control system accurately coordinates the collaborative work of each component to ensure that the device can operate efficiently and stably under different working conditions; the output end of the sand discharge pipe 8 is connected to the connecting hose 9, and the output end of the connecting hose 9 is connected to the sand adding gun.

[0014] Furthermore, the pressure gas guide pipe 6 is provided with a gas pipe side opening guide plate 15, which is located at the top of the conical sand separating device 7. The conical sand separating device 7 has a preset inclination arc, which works in conjunction with the gas pipe side opening guide plate 15 to guide the sand, disperse the sand, and make its distribution more uniform and its flow more orderly. A flow channel is formed between the gas pipe side opening guide plate 15 and the conical sand separating device 7. The flow channel is interconnected with the sand outlet pipe 8. During the sand adding operation, the compressed air carries the sand dispersed by the conical sand separating device 7 and flows rapidly along the flow channel to the sand outlet pipe 8. The gas pipe side opening guide plate 15 plays a guiding and auxiliary acceleration role in this process, ensuring that the mixture of sand and compressed air can flow stably and efficiently, and then be smoothly transported to the railway locomotive, providing a continuous and stable supply for the locomotive's brake sand addition, and effectively ensuring the efficiency and accuracy of the sand adding operation.

[0015] like Figure 2 As shown, a safety valve 4 is provided on the working surface at the top of the tank 1. When the internal pressure of the tank 1 exceeds a preset threshold, the safety valve 4 automatically opens to discharge excess gas, thereby effectively reducing the internal pressure of the tank 1 and preventing explosions or other safety accidents caused by excessive pressure. The safety valve 4 is located on one side of the conical discharge pipe 3, and a dust discharge valve 2 is provided on its opposite side. The dust discharge valve 2 can discharge dust from the tank 1 during sand addition and material replenishment. The PLC control system is connected to the electrically controlled valve, which is connected to the dust discharge valve. The system is connected via an air pipe; when the safety valve 4 malfunctions, the operator can detect it through the PLC control system; the top of the conical discharge pipe 3 is equipped with a T-type valve 11, and the T-type valve 11 is equipped with a telescopic cylinder 12. The telescopic end of the telescopic cylinder 12 is connected to the sealing gasket 13 through a cylinder push rod 14. The sealing gasket 13 can be tightly connected to the conical discharge pipe 3, and it can control the external sand filling pipe to replenish sand to the tank 1 by opening and closing; the telescopic cylinder 12 is electrically connected to the PLC control system. Example

[0016] Sand Addition Status: When adding sand to the locomotive, the PLC control system issues a command, the T-valve 11 and the dust discharge valve 2 are closed, and the sand adding device at the far end of the hose connected to the pressure gas guide pipe 6 is opened. At this time, a large amount of compressed air rushes in through the pressure air inlet pipe and quickly enters the pressure gas guide pipe 6. Then, the compressed air is fully mixed with the sand guided by the cone-shaped sand distribution device 7 below, thereby continuously and stably supplying sand to the locomotive. Throughout the process, the PLC control system will adjust the flow rate and pressure of the compressed air in real time according to the actual situation to ensure that the sand adding operation can be completed accurately and efficiently. Example

[0017] Material replenishment status: When the level gauge 16 detects that the sand level in tank 1 is below the preset position, it transmits the position information to the PLC control system. Then, under the instruction of the PLC control system, the T-valve 11 and the dust discharge valve 2 are opened, and the pressure gas guide pipe 6 is closed. At this time, the sealing gasket 13 on the T-valve 11 is opened through the telescopic cylinder 12, and the sand conveying system at the remote end enters the T-valve 11 through the sand filling pipe, and then enters the conical drop pipe 3, and finally falls into the tank 1. This process is carried out in an orderly manner under the strict monitoring of the PLC control system to ensure that the sand can be quickly and accurately replenished into the tank 1, making full preparations for subsequent sand filling operations. Example

[0018] Normal state (after sand addition operation): After the sand addition operation is completed, in order to ensure that the pressure inside tank 1 is in a safe state, the compressed air inlet pipe is closed to prevent compressed air from continuing to enter; at the same time, the dust discharge valve 2 is quickly opened to perform a pressure relief operation, expelling the residual gas in tank 1, so that the internal pressure of tank 1 gradually returns to normal pressure.

[0019] The above description is only a preferred embodiment of this utility model patent and is not intended to limit this utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this utility model patent should be included within the protection scope of this utility model patent.

Claims

1. A pressure vessel for adding brake sand to railway locomotives, characterized in that: include: Tank body (1), pressure gas guide pipe (6) provided in the tank body (1), conical sand separating device (7) provided at the bottom of the inner wall of the tank body (1), conical material drop pipe (3) and sand discharge pipe (8) respectively provided at both ends of the tank body (1) and external PLC control system; The tank (1) is hollow inside and has a preset receiving space for holding sand. The conical discharge pipe (3) is provided with a pressure air inlet pipe on one side, which is used to introduce compressed air into the tank (1); The working surface at the top of the pressure gas guide pipe (6) is open and is provided with a top air inlet (10). The compressed air enters the pressure gas guide pipe (6) through the top air inlet (10). The pressure gas guide pipe (6) is higher than the horizontal position of the conical discharge pipe (3). The PLC control system is used to control the working status of each component.

2. The pressure tank for adding brake sand to railway locomotives according to claim 1, characterized in that: The pressure gas guide pipe (6) is provided with a gas pipe side opening guide plate (15), which is located at the top of the cone sand separating device (7). The cone sand separating device (7) has a preset inclination arc. A flow channel is formed between the gas pipe side opening guide plate (15) and the cone sand separating device (7), and the flow channel is connected to the sand outlet pipe (8).

3. The pressure tank for adding brake sand to railway locomotives according to claim 1, characterized in that: The top working surface of the tank (1) is provided with a safety valve (4), which is located on one side of the conical discharge pipe (3), and a dust discharge valve (2) is provided on the opposite side.

4. The pressure tank for adding brake sand to railway locomotives according to claim 2, characterized in that: The top of the conical discharge pipe (3) is provided with a T-type valve (11), and the T-type valve (11) is provided with a telescopic cylinder (12). The telescopic end of the telescopic cylinder (12) is connected to the sealing gasket (13) through the cylinder push rod (14). The sealing gasket (13) can be tightly connected to the conical discharge pipe (3). The telescopic cylinder (12) is electrically connected to the PLC control system.

5. The pressure tank for adding brake sand to railway locomotives according to claim 1, characterized in that: The tank (1) is a split structure, which is connected to each other through the silo pump flange (5); the pressure gas guide pipe (6) is lower than the horizontal position of the silo pump flange (5); the tank (1) is equipped with a level gauge (16), which is used to measure the position of sand in the tank (1) and is electrically connected to the PLC control system.

6. The pressure tank for adding brake sand to railway locomotives according to claim 1, characterized in that: The output end of the sand outlet pipe (8) is connected to the connecting hose (9).

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