Gas decompression drainage structure

Abstract

The utility model discloses a gas decompression drainage structure, and belongs to the technical field of decompression instruments. The interior of the cavity is of a conical structure of which the diameter is gradually reduced from top to bottom; the air inlet is located in the top of the side wall of the cavity. The bottom of the cavity is of a hemispherical structure, a double-layer plate is arranged in the hemispherical structure, a drainage cavity is formed by a lower-layer plate and the hemispherical structure, a notch is formed in the edge of the lower-layer plate, the edge of one side of the notch is an inclined plane, and the edge of the opposite side of the notch is a vertical plane; a slender gap is formed between the tail end of the inclined surface and the tail end of the vertical surface, penetrates through the drainage cavity and the air passing cavity and is used for collecting water into the drainage cavity; and a drainage valve is arranged at the bottom of the drainage cavity. According to the pneumatic valve actuator, the maintenance frequency of the pneumatic valve actuator is reduced, and the service life of the pneumatic valve actuator is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure reducing instruments, in particular to a gas pressure reducing drainage structure. Background Art

[0002] The compressed air used in existing pneumatic pressure reducing valves contains moisture or water vapor. As the valve moves, moisture enters the gas pressure reducing valve along with the gas. After a long period of use, the pressure reducing valve is filled with moisture, and the moisture enters the actuator of the pneumatic valve (pneumatic valve head or cylinder) along with the gas, affecting the switching action of the valve. As the moisture remains in the cylinder, the dust on the actuator of the pneumatic valve (pneumatic valve head or cylinder) will condense into lumps, causing wear on the cylinder and the sealing ring, causing air leakage inside the pneumatic valve, resulting in slow valve switching action or even no action of the valve. Utility Model Content

[0003] The utility model aims to provide a gas pressure reducing and drainage structure, wherein the gas outlet is installed with a pneumatic valve actuator, and the moisture of the gas entering the pressure reducing valve can be reduced.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A gas decompression drainage structure, comprising an air inlet and an air outlet; comprising a chamber; the interior of the chamber is a conical structure with a gradually decreasing diameter from top to bottom; the air inlet is located at the top of the side wall of the chamber; the bottom of the chamber is a hemispherical structure, a double-layer plate is arranged inside the hemispherical structure, wherein the lower plate and the hemispherical structure form a drainage cavity, a notch is arranged at the edge of the lower plate, one side edge of the notch is an inclined surface, and the opposite side edge is a vertical surface; a slender gap is arranged between the end of the inclined surface and the end of the vertical surface, the slender gap passes through the drainage cavity and the air passage cavity, and is used to collect water into the drainage cavity; a drainage valve is arranged at the bottom of the drainage cavity;

[0006] The inner wall of the chamber is provided with a spiral groove; the end of the spiral groove extends to the inner wall of the hemispherical structure between the upper plate and the lower plate;

[0007] The air outlet is located at the opposite side of the air inlet, and the inner port of the air outlet extends to the lower surface of the upper plate through the air outlet pipe.

[0008] Furthermore, the distance between the upper plate and the lower plate is the same as the width of the spiral groove.

[0009] Furthermore, the inclined surface is close to the end of the spiral groove.

[0010] Furthermore, the upper cavity with the spiral groove is a gas passage cavity.

[0011] Furthermore, the upper plate is located directly above the notch, and the inner edge of the upper plate is arranged along the adjacent spiral groove to form a spiral protrusion, and its inclination angle is the same as that of the spiral protrusion.

[0012] Furthermore, it also includes a pressure gauge arranged on the outer wall of the chamber, and the pressure sensor of the pressure gauge is located inside the chamber.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] This embodiment is installed with the pneumatic valve actuator, which can effectively reduce the moisture that enters the pneumatic valve actuator, reduce the maintenance times of the pneumatic valve actuator, and increase the service life of the pneumatic valve actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structure used to reduce water content in the prior art.

[0016] Figure 2 It is a structural diagram of an embodiment of the utility model.

[0017] In the figure: 1, spiral groove, 2, air passage cavity, 3, air outlet pipe, 4, upper plate, 5, notch, 6, drain valve, 8, drain cavity, 9, lower plate. DETAILED DESCRIPTION

[0018] The specific implementation of the utility model is further described in detail below with reference to the drawings and embodiments.

[0019] Reference Figure 1 , the water inlet pipe of the prior art directly extends to a position near the bottom of the chamber, allowing the collected water to be collected downward on the smooth inner wall.

[0020] Reference Figure 2 , Figure 2 This is a schematic diagram of the improved structure of this embodiment, which also includes an air inlet and an air outlet;

[0021] Inside the chamber is a conical structure with a gradually decreasing diameter from top to bottom, and a spiral groove is provided on the inner wall of the chamber, which not only increases the contact area between the compressed gas and the inner wall, but also the air containing moisture will partially move downward by rotating along the spiral groove when moving at high speed. In this process, the moisture will condense on the inner wall of the spiral groove and be sent to the notch position by the high-speed moving air through the spiral groove.

[0022] The air inlet is located at the top of the side wall of the chamber; the bottom of the chamber is a hemispherical structure, and a double-layer plate is arranged inside the hemispherical structure, wherein the lower plate and the hemispherical structure form a drainage cavity, and a notch is arranged at the edge of the lower plate, one side edge of the notch is an inclined surface, and the opposite side edge is a vertical surface; there is a slender gap between the end of the inclined surface and the end of the vertical surface, and the slender gap passes through the drainage cavity and the air cavity, and is used to collect water into the drainage cavity; a drainage valve is arranged at the bottom of the drainage cavity; the end of the spiral groove extends to the inner wall of the hemispherical structure between the upper plate and the lower plate; the air outlet is located on the opposite side of the air inlet, and the inner port of the air outlet extends to the lower surface of the upper plate through the air outlet pipe.

[0023] The distance between the upper plate and the lower plate is the same as the width of the spiral groove. Water accumulates at the notch of the lower plate, and under the action of the high pressure of the air cavity, the water penetrates into the drainage cavity through the slender gap, and is drained by the drainage valve after accumulation.

[0024] In this embodiment, the inclined surface is close to the end of the spiral groove, which is more convenient for collecting moisture. The upper plate is located directly above the notch and has an inclined setting. A pressure gauge is arranged on the outer wall of the chamber, and the pressure sensor of the pressure gauge is located inside the chamber. The upper chamber with the spiral groove is a gas passage chamber.

[0025] The upper plate is located directly above the notch, and the inner edge of the upper plate forms a spiral protrusion along the adjacent spiral groove, and its inclination angle is the same as the spiral protrusion, which can reduce the entry of moisture into the air outlet pipe as much as possible without hindering the spiral airflow.

Claims

1. A gas decompression and drainage structure, comprising an air inlet and an air outlet; characterized in that: The invention comprises a chamber; the interior of the chamber is a conical structure with a gradually decreasing diameter from top to bottom; the air inlet is located at the top of the side wall of the chamber; the bottom of the chamber is a hemispherical structure, a double-layer plate is arranged inside the hemispherical structure, wherein the lower plate and the hemispherical structure form a drainage cavity, a notch is arranged at the edge of the lower plate, one side edge of the notch is an inclined surface, and the opposite side edge is a vertical surface; a slender gap is arranged between the end of the inclined surface and the end of the vertical surface, the slender gap passes through the drainage cavity and the air cavity, and is used to collect water into the drainage cavity; a drainage valve is arranged at the bottom of the drainage cavity; The inner wall of the chamber is provided with a spiral groove; the end of the spiral groove extends to the inner wall of the hemispherical structure between the upper plate and the lower plate; The air outlet is located at the opposite side of the air inlet, and the inner port of the air outlet extends to the lower surface of the upper plate through the air outlet pipe.

2. A gas decompression drainage structure according to claim 1, characterized in that: The distance between the upper plate and the lower plate is the same as the width of the spiral groove.

3. A gas decompression drainage structure according to claim 1, characterized in that: The inclined surface is close to the end of the spiral groove.

4. A gas decompression drainage structure according to claim 1, characterized in that: The upper cavity with the spiral groove is a gas passage cavity.

5. A gas decompression drainage structure according to claim 1, characterized in that: The upper plate is located directly above the notch, and the inner edge of the upper plate is arranged along the adjacent spiral grooves to form a spiral protrusion, and its inclination angle is the same as that of the spiral protrusion.

6. A gas decompression drainage structure according to claim 1, characterized in that: It also includes a pressure gauge arranged on the outer wall of the chamber, and a pressure sensor of the pressure gauge is located inside the chamber.

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