Safety valve for liquid pressure control of aviation equipment

Abstract

The safety valve for controlling the liquid pressure of the aviation equipment comprises a valve body, the bottom end of the valve body is communicated with the upper end of a connecting pipe, a valve element is connected into the valve body in a sliding mode, the lower end of the valve element is in a pointed cone shape and is inserted into the connecting pipe, an overflow cavity is formed between the valve body and the valve element, and an overflow pipe is arranged on the side wall of the valve body. The overflow pipe is communicated with the overflow cavity, a rectangular cavity is connected into the valve body in a sliding mode, the bottom end of the rectangular cavity is connected with the upper end of the valve element through a spring, a pressure adjusting assembly is arranged on the valve body and connected with the rectangular cavity, and the rectangular cavity moves up and down in the valve body. The rectangular cavity moves upwards or downwards, the spring is compressed or stretched, and the value of pressure applied to the valve element is changed, so that the safe pressure value of liquid is changed, and the requirement for liquid pressure control of aviation equipment is met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of safety valve, concretely relates to a safety valve for liquid pressure control of aviation equipment. BACKGROUND

[0002] With the rapid development of aerospace technology, the requirements of aviation equipment in performance, reliability and safety are increasingly improved. The liquid system in aviation equipment, such as fuel system, hydraulic system, cooling system, etc., is the key part to maintain the normal operation of the aircraft. These systems need to accurately control the pressure of the liquid to ensure the stable operation of the equipment and the safety of the passengers. However, in extreme working environments, such as high altitude, high speed, high temperature variation, etc., the pressure control of the liquid system becomes particularly complex and challenging. As an indispensable important component in the liquid system, the safety valve mainly functions to automatically open when the pressure exceeds the set value, releasing excess pressure to prevent system overload and damage. The safety pressure value of the existing safety valve cannot be adjusted, which cannot meet the needs of the liquid pressure control of aviation equipment. SUMMARY

[0003] Therefore, the utility model wants to solve the problem that the safety pressure value of the safety valve in the prior art cannot be adjusted.

[0004] To this end, the technical scheme adopted is that the utility model relates to a safety valve for liquid pressure control of aviation equipment, comprising: a valve body, the bottom end of the valve body is in communication with the upper end of a connecting pipe, a valve core is slidably connected in the valve body, the lower end of the valve core is pointed, the lower end of the valve core is inserted into the connecting pipe, an overflow cavity is arranged between the valve body and the valve core, an overflow pipe is arranged on the side wall of the valve body and is in communication with the overflow cavity, a rectangular cavity is slidably connected in the valve body, the bottom end of the rectangular cavity is connected with the upper end of the valve core through a spring, a pressure adjusting assembly is arranged on the valve body and is connected with the rectangular cavity, and the rectangular cavity moves up and down in the valve body.

[0005] Preferably, the pressure adjusting assembly comprises a screw rod, a rotating shaft and a knob, the lower end of the screw rod is threadedly connected with the top wall of the rectangular cavity, the upper end of the screw rod is coaxially connected with one end of the rotating shaft, the other end of the rotating shaft penetrates through the top wall of the valve body and is connected with the knob, and the rotating shaft is rotationally connected with the top wall of the valve body.

[0006] Preferably, vertical sliding rails are arranged on the inner wall of the valve body and are slidably connected with the rectangular cavity.

[0007] Preferably, threads are arranged on the outer wall of the lower end of the connecting pipe.

[0008] Preferably, the lower end of the screw rod extends into the rectangular cavity and is connected with a limiting block.

[0009] Preferably, anti-slip patterns are arranged on the knob.

[0010] The technical scheme of the utility model has the following advantages: when the safety pressure value of overflow needs to be adjusted, the knob is rotated to drive the screw rod to rotate, the rectangular cavity is moved upward or downward through the threaded transmission between the screw rod and the top wall of the rectangular cavity, the spring is compressed or stretched, the pressure value applied on the valve core is changed, the liquid safety pressure value is changed, and the demand of liquid pressure control of aviation equipment is met.

[0011] Other features and advantages of the utility model will be set forth in the subsequent description, and partially become obvious from the description, or be understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structure specially pointed out in the written description and the drawings.

[0012] The technical scheme of the utility model will be further described in detail below by means of the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0013] The drawings are used to provide further understanding of the utility model, and constitute a part of the description, are used to explain the utility model together with the embodiments of the utility model, and do not constitute the limitation of the utility model. In the drawings:

[0014] Figure 1 It is the structural schematic diagram of the utility model;

[0015] Figure 2 It is the use state diagram of the utility model;

[0016] Wherein, 1, valve body;2, connecting pipe;3, valve core;4, overflow cavity;5, overflow pipe;6, rectangular cavity;7, spring;8, screw rod;9, rotating shaft;10, knob;11, slide rail;12, limit block;13, pipeline. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model more clear and obvious, the utility model is further described in detail below by means of the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0018] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0019] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0020] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0021] The utility model provides a kind of safety valve for aviation equipment liquid pressure control, as shown in Figures 1-2 The utility model discloses a safety valve for aviation equipment liquid pressure control, as shown in Figure 1, including: valve body 1, valve body 1 bottom end and the upper end of connecting pipe 2 intercommunication, slidingly connected with valve core 3 in valve body 1, the lower end of valve core 3 is sharp cone, valve core 3 lower end is inserted into connecting pipe 2, overflow chamber 4 is arranged between valve body 1 and valve core 3, overflow pipe 5 is arranged on the side wall of valve body 1, overflow pipe 5 and overflow chamber 4 intercommunication, slidingly connected with rectangular cavity 6 in valve body 1, the bottom end of rectangular cavity 6 is connected with the upper end of valve core 3 by spring 7, pressure regulating assembly is arranged on valve body 1, pressure regulating assembly is connected with rectangular cavity 6, rectangular cavity 6 moves up and down in valve body 1. Overflow pipe 5 and liquid storage tank intercommunication, for delivering overflow liquid into liquid storage tank.

[0022] Pressure regulating assembly includes: screw rod 8, shaft 9 and knob 10, the lower end of screw rod 8 is connected with the top wall of rectangular cavity 6 by screw thread, one end of screw rod 8 upper end is coaxially connected with shaft 9, the other end of shaft 9 passes through the top wall of valve body 1 and is connected with knob 10, shaft 9 is rotationally connected with the top wall of valve body 1.

[0023] The working principle and beneficial technical effects of the above technical solution are as follows: the connecting pipe 2 is installed on the pipe 13, liquid flows in the pipe 13, the liquid applies pressure to the valve core 3 through the connecting pipe 2, when the pressure value of the liquid exceeds the pressure value applied to the valve core 3 by the spring 7, the valve core 3 is pushed upward, the liquid flows to the liquid storage tank through the overflow cavity 4 and the overflow pipe 5, the pressure value of the liquid is reduced to reach the safety pressure value. When it is necessary to adjust the safety pressure value of the overflow, the knob 10 is rotated to drive the screw rod 8 to rotate, the rectangular cavity 6 is moved upward or downward through the threaded transmission between the screw rod 8 and the top wall of the rectangular cavity 6, the spring is compressed or stretched, the pressure value applied to the valve core 3 is changed, and thus the liquid safety pressure value is changed to meet the demand of the liquid pressure control of the aviation equipment.

[0024] In one embodiment, as shown in Figure 1 The inner wall of the valve body 1 is provided with a vertical sliding rail 11, the sliding rail 11 is in sliding connection with the rectangular cavity 6, and the rectangular cavity 6 is facilitated to slide up and down. The outer wall of the lower end of the connecting pipe 2 is provided with threads, and the connecting pipe 2 is screwed on the liquid pipe. The lower end of the screw rod 8 extends into the rectangular cavity 6 and is connected with the limiting block 12, so as to prevent the screw rod 8 from moving out of the rectangular cavity 6. The knob 10 is provided with anti-skid lines to increase the friction and facilitate manual rotation of the knob 10.

[0025] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Therefore, if these modifications and variations of the present application belong to the scope of the claims of the present application and the equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A relief valve for use in the liquid pressure control of airborne equipment, characterized in that, Include: Valve body (1), the bottom end of valve body (1) communicates with the upper end of connecting pipe (2), valve core (3) is slidably connected in valve body (1), the lower end of valve core (3) is pointed cone, the lower end of valve core (3) is inserted into connecting pipe (2), overflow chamber (4) is arranged between valve body (1) and valve core (3), overflow pipe (5) is arranged on the side wall of valve body (1), overflow pipe (5) communicates with overflow chamber (4), rectangular cavity (6) is slidably connected in valve body (1), the bottom end of rectangular cavity (6) is connected with the upper end of valve core (3) through spring (7), pressure regulating assembly is arranged on valve body (1), pressure regulating assembly is connected with rectangular cavity (6), rectangular cavity (6) moves up and down in valve body (1); Pressure regulating assembly includes: screw rod (8), rotating shaft (9) and knob (10), the lower end of screw rod (8) is threadedly connected with the top wall of rectangular cavity (6), the upper end of screw rod (8) is coaxially connected with one end of rotating shaft (9), the other end of rotating shaft (9) passes through the top wall of valve body (1) and is connected with knob (10), rotating shaft (9) is rotatably connected with the top wall of valve body (1).

2. A relief valve for liquid pressure control of airborne equipment according to claim 1, characterized in that The inner wall of valve body (1) is provided with vertical slide rail (11), and slide rail (11) is slidably connected with rectangular cavity (6).

3. A relief valve for liquid pressure control of airborne equipment according to claim 1, characterized in that The outer wall of the lower end of connecting pipe (2) is provided with a thread.

4. A relief valve for liquid pressure control of airborne equipment according to claim 1, characterized in that The lower end of screw rod (8) extends into rectangular cavity (6) and is connected with limiting block (12).

5. A relief valve for liquid pressure control of airborne equipment according to claim 1, wherein Knob (10) is provided with anti-skid lines.

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