Sanding pressure control regulator

Abstract

The present invention discloses a sanding pressure control regulator which is arranged in a sanding air passage and comprises an air passage plate, a blocking cock and a pressure regulator The air passage plate has a main air inlet and a main air outlet and is connected to the sanding air passage through the main air inlet and the main air outlet. A plurality of airways are provided inside the air passage plat. The blocking cock is fixed on the air passage plate and can be opened and closed for conducting or blocking compressed air in the air passage. The pressure regulator is fixed on the air passage plate and can adjust the pressure of the compressed air in the air passage to allow the pressure of the compressed air flowing through the pressure regulator to accord with the requirement of the sanding process. The blocking cock and the pressure regulator are connected in series through the air passage. With double functions of adjusting the pressure of the compressed air and controlling and blocking the compressed air, the sanding pressure control regulator of the present invention is applicable to blocking and adjusting the sanding pipeline pressure of locomotives of various types and enables to protect a sanding valve of the locomotives and to prolong the service life of the locomotives.

Description

technical field [0001] The invention relates to a pressure control regulator, especially a sand spreading pressure control regulator, which is suitable for cutting off and regulating the pressure of sand spreading pipelines of various types of locomotives, and has dual functions of adjusting the pressure of compressed air and controlling and cutting off the compressed air. , to protect the sand valve of the locomotive and prolong its service life. Background technique [0002] With the improvement of the level of science and technology, locomotives, as a means of transportation for modern industrial production, are also developing rapidly. Especially in recent years, the development speed of locomotive technology has been advancing by leaps and bounds, and it is more and more integrated with people's daily life and travel. They are closely related, and locomotive transportation involves more and more fields, and at the same time, there are higher and higher requirements for ...

AI Technical Summary

Problems solved by technology

However, the current sanding device itself is not perfect, and there are various practical problems, such as excessive sanding wind pressure, short service life of the sanding valve, etc.

[0004] Take Harmony Electric 2 locomotive as an example (hereinafter referred to as HXD2), this model is currently mainly responsible for the heavy duty of coal transportation on the Daqin Line. First, the sand valve of the locomotive has a lot of work, and the sand used by the HXD2 locomotive is a kind of white quartz sand, which has high hardness and sharp edges and corners. At the same time, the degree of wear and tear on the sanding valve is also very serious. Moreover, the compressed air used for locomotive sanding is taken from the total air of the locomotive, and the pressure range of the total air of the locomotive is between 800kPa~ 900kPa, inside the sand spreading valve, the high-pressure total wind blows the sand and gravel directly on the sand outlet of the sand spreading valve, and the impact on the sand outlet is quite large, while the air circuit inside the locomotive is only cut off by a single valves to control compressed air (refer to figure 1 , which is a schematic diagram of locomotive sanding control principle in the prior art), which can only realize the conduction and cut-off of the total air flow, which will cause the sanding valve to wear out quickly under this working condition until it is pierced, thus losing normal operation. The working efficiency of the locomotive will endanger the normal and safe operation of the locomotive when it is serious, which is a very serious problem

Moreover, it has been proved by practice that this kind of situation will happen in less than two months when the new car arrives at the section, causing the problem that the sand and gravel cannot be properly and accurately sprinkled between the wheels and the track, and the wheel slipping seriously affects the locomotive. driving effect, and at present, the above-mentioned problems can only be solved through high-frequency maintenance or replacement of new parts, but this solution will inevitably lead to an increase in manpower and material costs, and those skilled in the art have been seeking solution

[0005] The designer deeply felt that there should be a good way to solve the above technical problems. With his years of relevant research and development experience and rich professional knowledge, after analysis, he found that reducing the wind pressure of the sand spraying pipeline can effectively solve this problem. , but because the current internal design of the locomotive does not have enough remaining space to add pressure regulating equipment in the sanding pipeline, in view of this, the designer proposes the technical solution of the sanding pressure control regulator of the present invention

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