A pressure reducer overpressure release device

Abstract

This utility model pertains to aviation oxygen supply technology, specifically relating to an overpressure release device for a pressure reducer. It includes: a housing, an indicator plate, and a wire retaining ring; the housing has a rotating structure with two stepped blind holes on its upper surface, the diameter of which is larger at the top and smaller at the bottom; a through hole is provided in the center of each blind hole; the indicator plate is placed on the stepped surface of the two stepped blind holes; a wire retaining ring mounting groove is provided on the side wall of the larger-diameter blind hole; the wire retaining ring is secured within the wire retaining ring mounting groove to prevent the indicator plate from falling off.

Description

Technical Field

[0001] This utility model belongs to aviation oxygen supply technology, specifically relating to an overpressure release device for a pressure reducer. Background Technology

[0002] Currently, the overpressure relief device is only designed to blow the indicator strip out of the housing when the pressure is higher than 0.2 MPa (gauge pressure). It is not designed to blow the indicator strip out of the housing when the front-end pressure is lower than 0.1 MPa (gauge pressure). Utility Model Content

[0003] Purpose of the utility model: To provide an overpressure release device for a pressure regulator, which enables the indicator plate of the pressure regulator overpressure release device to be blown out of the housing when the pressure at the front end of the pressure regulator overpressure release device is between 0.05MPa and 0.1MPa (gauge pressure).

[0004] Technical solution: An overpressure relief device for a pressure regulator includes: a housing, an indicator plate, and a steel wire retaining ring; The shell is a rotating body structure, with two stepped blind holes on the upper surface, the diameter of which is larger at the top and smaller at the bottom. A through hole is provided in the middle of the blind hole; The indicator plate is placed on the stepped surface of the two-stage stepped blind hole; The sidewall of the larger diameter primary blind hole is provided with a steel wire retaining ring mounting groove; The wire retaining ring is inserted into the wire retaining ring mounting groove to prevent the indicator plate from falling off.

[0005] Furthermore, the material of the indicator sheet is polycarbonate (PC).

[0006] Furthermore, the diameter of the indicator plate is φ21.6. 0 -0.08 mm.

[0007] Furthermore, the thickness of the indicator sheet is 0.25 mm.

[0008] Furthermore, the cross-section of the wire retaining ring mounting groove is semi-circular with a radius of R0.60. +0.05 mm.

[0009] Furthermore, the diameter of the larger primary blind hole is φ21.60. +0.08 mm.

[0010] Furthermore, the height difference between the lower end of the wire retaining ring mounting groove and the stepped surface of the two-stage stepped blind hole is 0.30. +0.08 mm.

[0011] Furthermore, the wire retaining ring is made of 1Cr18Ni9Ti, the wire diameter is φ1.2mm, and the outer diameter of the wire retaining ring is φ24.20mm. +0.52 mm.

[0012] Beneficial effects: This invention enables timely monitoring of the overpressure release function of the oxygen pressure regulator in the aircraft oxygen system, and can promptly detect upstream pressure regulator product failures. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of an overpressure relief device for a pressure regulator. Figure 2 This is a top view of the pressure relief device of this utility model.

[0014] Explanation of reference numerals in the attached drawings: 1-Housing; 2-Indicator plate; 3-Wire retaining ring. Detailed Implementation

[0015] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0016] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0017] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] An overpressure relief device for a pressure regulator includes a flange seat 1, an indicator plate 2, and a wire retaining ring 3.

[0020] See Figure 1 and Figure 2 To achieve the function of releasing overpressure in the pressure regulator of the oxygen monitoring system, this utility model should consist of a housing 1, an indicator 2, and a steel wire retaining ring 3. The housing is provided with a rectangular groove and R0.60. +0.05 The mounting slots, each φ21.60 mm in diameter, are used to assemble the indicator plate and the wire retaining ring. The housing material is 2A12-T4 hard aluminum, and the rectangular slot for mounting the indicator plate has a diameter of φ21.60 mm. +0.08 mm, groove height is 0.30 +0.08 mm; The overlap width between the lower surface of the indicator and the housing is 1.3mm; The indicator is made of polycarbonate (PC) and has a diameter of φ21.6. 0 -0.08 mm, thickness 0.25mm.

[0021] The cross-section of the mounting groove for the wire retaining ring is semi-circular.

[0022] The steel wire retaining ring is made of 1Cr18Ni9Ti, with a wire diameter of φ1.2mm and an outer diameter of φ24.20mm. +0.52 mm.

[0023] The working principle of this utility model is: In Figure 1 In the indicated state, housing 1 is the part connected and installed with the aircraft skin. The wire retaining ring 3 is installed in the housing annular groove to cover the indicator 2 and prevent the indicator 2 from falling out of the flange seat 1. When the release pressure is reached, the indicator 2 deforms and flies out of the flange seat 2, serving as a release indicator.

[0024] Tests showed that when the pressure regulator in the oxygen system exceeded the pressure limit and released, the pressure entering the pressure regulator's overpressure release device was above 0.05MPa to 0.1MPa (gauge pressure), causing the indicator to fall off. This timely monitoring of the oxygen regulator's pressure exceeding the limit eliminated potential pressure discrepancies and ensured flight safety.

[0025] The above description is merely a specific embodiment of this utility model, providing a detailed description of the utility model. Parts not covered in detail are conventional techniques. However, the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A pressure relief device for a pressure regulator, characterized in that: The device includes: a housing, an indicator plate, and a wire retaining ring; The shell is a rotating body structure, with two stepped blind holes on the upper surface, the diameter of which is larger at the top and smaller at the bottom. A through hole is provided in the middle of the blind hole; The indicator plate is placed on the stepped surface of the two-stage stepped blind hole; The sidewall of the larger diameter primary blind hole is provided with a steel wire retaining ring mounting groove; The wire retaining ring is inserted into the wire retaining ring mounting groove to prevent the indicator plate from falling off.

2. The apparatus according to claim 1, characterized in that: The indicator sheet is made of polycarbonate (PC).

3. The apparatus according to claim 2, characterized in that: The indicator plate has a diameter of φ21.

6. 0 -0.08 mm.

4. The apparatus according to claim 3, characterized in that: The thickness of the indicator sheet is 0.25mm.

5. The apparatus according to claim 4, characterized in that: The cross section of the steel wire retainer ring mounting groove is a semicircle with R0.60 + 0.05 mm.

6. The apparatus according to claim 5, characterized in that: The diameter of the first blind hole is φ21.60 + 0.08 mm.

7. The apparatus according to claim 6, characterized in that: The height difference between the lower end of the steel wire check ring installation groove and the step surface of the two-stage step-shaped blind hole is 0.30 +0.08 mm.

8. The apparatus according to claim 7, characterized in that: The wire retaining ring is made of 1Cr18Ni9Ti, with a wire diameter of φ1.2mm and an outer diameter of φ24.20mm. +0.52 mm.

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