Pressure regulator with silencing function

Abstract

The utility model discloses a pressure regulator with a silencing function, and belongs to the technical field of pressure regulation and stabilization, an internal silencer and an external silencer are additionally arranged on the basis of the structure of an axial-flow type pressure regulator, when a valve cylinder is separated from a valve clack and a valve port seat, gas flows out through a silencing through hole of the internal silencer, and when the gas flow speed is high enough, the gas flow speed is high enough, and the gas flow speed is high enough. The noise reduction through holes can move the frequency spectrum of exhaust noise to high frequency, the audible sound part in the noise frequency spectrum is reduced, and therefore interference of the noise to the environment is reduced, the noise reduction barrel filled with the spring is arranged in the external silencer, when airflow passes through the spring in the noise reduction barrel, the spring in the noise reduction barrel can absorb kinetic energy generated by airflow impact, and the noise reduction effect is improved. When the airflow passes through the rectifying plate at the open end of the external silencer, the airflow passes through the multiple layers of perforated plates, layered diffusion and pressure reduction are achieved, the pressure and the flow speed of the fluid are reduced, meanwhile, the flow direction of the fluid is integrated, impact on the pipe wall is reduced, and the effect of reducing the noise is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of pressure regulating and stabilizing, and particularly relates to a pressure regulator with sound attenuation. BACKGROUND

[0002] The axial flow type pressure regulator is a key equipment in a gas conveying and distributing system, the design of the axial flow type pressure regulator not only improves the efficiency and safety of the gas conveying and distributing system, but also meets the demand of a modern gas system for efficient and stable operation through its ingenious design and excellent performance, and the pressure regulator is widely applied to the fields of urban gas supply and industrial gas supply, and ensures the continuity and quality of gas supply.

[0003] The axial flow type pressure regulator is suitable for working conditions of higher inlet and outlet pressures and large outlet flow, however, in actual use, when the outlet flow of the pressure regulator becomes large, annoying high noise is often generated. CONTENT OF THE UTILITY MODEL

[0004] To solve the problems in the background art, the utility model provides a pressure regulator with sound attenuation to solve the problem of high noise generated when the outlet flow of the axial flow type pressure regulator becomes large.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A pressure regulator with sound attenuation comprises:

[0007] A left membrane cover and a right membrane cover are connected in a clamping manner to form a chamber, and mounting through holes are arranged on the left membrane cover and the right membrane cover;

[0008] A valve cylinder is arranged in the chamber, a first end of the valve cylinder is arranged in the mounting through hole of the left membrane cover in a linear sliding manner, a second end of the valve cylinder is arranged in the mounting through hole of the right membrane cover in a linear sliding manner, and a gas output end of a gas output device is communicated with the first end of the valve cylinder;

[0009] A valve port seat is fixedly arranged on the outside of the right membrane cover, and a valve clack is arranged on a first surface of the valve port seat;

[0010] An internal sound attenuator is sleeved by multiple layers of tubular structures, multiple sound attenuation through holes are arranged on the side walls of each layer of tubular structures, the bottom end of the internal sound attenuator is fixedly arranged on the first surface of the valve port seat, the top end of the internal sound attenuator is fixedly arranged on the outside of the right membrane cover, and the port of the second end of the valve cylinder is arranged opposite to the valve clack in sequence through the mounting through hole of the right membrane cover and the internal sound attenuator;

[0011] An elastic pressure mechanism is arranged in the chamber, the elastic pressure mechanism is used for pressing the valve cylinder on the valve clack, and the elastic pressure mechanism adjusts the gas flow pressure and the flow size by adjusting the gap between the port of the second end of the valve cylinder and the valve clack.

[0012] Preferably, the pressure regulator further comprises an external muffler, the external muffler comprising:

[0013] An air outlet pipe; a first end of the air outlet pipe is fixedly connected with the right diaphragm cover, and the valve port seat is arranged in the air outlet pipe;

[0014] A muffling cylinder; a plurality of muffling through holes are arranged on the top end and the bottom end of the muffling cylinder, a plurality of springs are filled in the muffling cylinder, the muffling cylinder is arranged in the middle section of the air outlet pipe, and the gas flows to the second end of the air outlet pipe after sequentially passing through the top end and the bottom end of the muffling cylinder;

[0015] At least one flow regulating plate; the flow regulating plate is arranged in the second end of the air outlet pipe, and a plurality of muffling through holes are arranged on the flow regulating plate.

[0016] Preferably, the elastic pressure mechanism comprises:

[0017] A main diaphragm; the main diaphragm is sleeved on the valve cylinder, the edge of the main diaphragm is clamped at the connecting position of the left diaphragm cover and the right diaphragm cover, and the main diaphragm divides the chamber into two parts which are not communicated with each other;

[0018] A left tray and a right tray; the left tray and the right tray are both sleeved on the valve cylinder, the left tray and the right tray are connected through the locking nut, and the main diaphragm is clamped at the connecting position of the left tray and the right tray;

[0019] A main valve spring; the main valve spring is sleeved on the valve cylinder, and the main valve spring acts on the locking nut to press the valve cylinder on the valve disc;

[0020] A gas pressure adjusting mechanism; the left diaphragm cover and the right diaphragm cover are both provided with gas holes, the gas pressure adjusting mechanism is provided with two air outlet ends, one air outlet end is communicated with one gas hole, and the gas pressure adjusting mechanism is used for controlling the pressure applied by the main valve spring to the valve cylinder.

[0021] Preferably, the gas pressure adjusting mechanism is composed of a pressure stabilizer and a commander.

[0022] Preferably, the pressure regulator further comprises a valve position indicator component, the valve position indicator component is arranged on the left diaphragm cover or the right diaphragm cover, and the valve position indicator component is used for displaying the pressure condition in the chamber.

[0023] Preferably, the main diaphragm is in a wrinkled state in the initial state.

[0024] Preferably, the air outlet pipe is in a horn shape, the first end of the air outlet pipe is a narrow end, and the second end is an open end.

[0025] Compared with the prior art, the pressure regulator has the beneficial effects that:

[0026] The application is based on the structure of the axial flow pressure regulator, and is additionally provided with an inner silencer and an outer silencer. The inner silencer is a small-hole injection type silencer. When the valve cylinder is separated from the valve flap and the valve port seat, the gas will flow outwards through the silencing through hole of the inner silencer. When the flow speed is high enough, the silencing through hole can shift the frequency spectrum of the exhaust noise to high frequency, so that the audible sound part in the noise frequency spectrum is reduced, thereby reducing the interference of the noise on the environment. The outer silencer is provided with a silencing cylinder filled with springs. When the gas flow passes through the springs in the silencing cylinder, the springs in the silencing cylinder can absorb the kinetic energy of the gas flow impact, reduce the gas flow speed and reduce the gas flow noise. When the gas flow passes through the rectifier plate of the open end of the outer silencer, the gas flow is diffused and decompressed in layers through the multiple layers of perforated plates, the fluid flow direction is integrated, the impact on the pipe wall is reduced, and the noise reduction effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a specific structural schematic view of the application;

[0028] Figure 2 is an installation position schematic view of the stabilizer and the commander;

[0029] In the figure, the marks are:

[0030] 1-left membrane cover; 2-valve position indicator part; 3-main valve spring; 4-left tray; 5-main skin membrane; 6-right tray; 7-right membrane cover; 8-valve cylinder; 9-inner silencer; 10-valve flap; 11-valve port seat; 12-outer silencer; 13-stabilizer; 14-commander. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] Embodiment 1:

[0033] As shown in Figure 1 , a pressure regulator with silencing, comprising:

[0034] A left membrane cover 1 and a right membrane cover 7; the left membrane cover 1 and the right membrane cover 7 are connected to form a cavity by buckling connection, and the left membrane cover 1 and the right membrane cover 7 are both provided with a mounting through hole.

[0035] Valve cylinder 8; the valve cylinder 8 is arranged in the chamber, the first end of the valve cylinder 8 is arranged in the mounting hole of the left membrane cover 1 in a linear sliding manner, the second end of the valve cylinder 8 is arranged in the mounting hole of the right membrane cover 7 in a linear sliding manner, and the gas output end of the gas output device is communicated with the first end of the valve cylinder 8.

[0036] Valve port seat 11; the valve port seat 11 is fixedly installed on the outer side of the right membrane cover 7, and the valve flap 10 is arranged on the first surface of the valve port seat 11.

[0037] Built-in silencer 9; the built-in silencer 9 is sleeved by a plurality of tubular structures, a plurality of sound reduction holes are arranged on the side wall of each tubular structure, the bottom end of the built-in silencer 9 is fixedly installed on the first surface of the valve port seat 11, the top end of the built-in silencer 9 is fixedly installed on the outer side of the right membrane cover 7, the port of the second end of the valve cylinder 8 is arranged opposite to the valve flap 10 after sequentially passing through the mounting hole of the right membrane cover 7 and the built-in silencer 9, and the built-in silencer 9 is a small hole injection type silencer. The working principle is that when the gas flow velocity through the small hole is high enough, the small hole can shift the frequency spectrum of the exhaust noise to high frequency, so that the audible sound part in the noise frequency spectrum is reduced, thereby reducing the interference of noise on the environment.

[0038] External silencer 12; the external silencer 12 comprises:

[0039] Gas outlet pipeline; the first end of the gas outlet pipeline is fixedly connected with the right membrane cover 7, the valve port seat 11 is arranged in the gas outlet pipeline, the gas outlet pipeline is in a horn shape, the first end of the gas outlet pipeline is a narrow port end, and the second end is an open port end;

[0040] Silencer cylinder; a plurality of sound reduction holes are arranged on the top end and the bottom end of the silencer cylinder, a plurality of springs are filled in the silencer cylinder, the silencer cylinder is arranged in the middle section of the gas outlet pipeline, and the gas flows to the second end of the gas outlet pipeline after sequentially passing through the top end and the bottom end of the silencer cylinder;

[0041] Three flow plates; the flow plates are arranged in the second end of the gas outlet pipeline, a plurality of sound reduction holes are arranged on the flow plates, the external silencer 12 is combined with the outlet flange of the pressure regulator, the outlet pipe diameter of the pressure regulator is enlarged, the springs in the silencer cylinder can absorb the kinetic energy of the gas flow impact when the gas flow passes through, the gas flow rate is reduced, the gas flow noise is reduced, the gas flow passes through the three flow plates on the outlet side of the external silencer 12, the gas flow is diffused and decompressed in layers through the multi-layer perforated plate, the fluid pressure and flow rate are reduced, and the flow direction of the fluid is integrated, so that the impact on the pipe wall is reduced, the noise is reduced, the outlet side of the external silencer 12 is enlarged, and the situation that the gas flow is not enough due to the reduction of the gas medium flow rate is avoided.

[0042] Elastic pressure mechanism; the elastic pressure mechanism is arranged in the chamber, and is used for pressing the valve cylinder 8 on the valve disc 10. The elastic pressure mechanism adjusts the pressure and flow of the air flow by adjusting the gap between the port of the second end of the valve cylinder 8 and the valve disc 10. The elastic pressure mechanism comprises:

[0043] Main skin film 5; the main skin film 5 is sleeved on the valve cylinder 8, the edge of the main skin film 5 is clamped at the joint of the left film cover 1 and the right film cover 7, the main skin film 5 divides the chamber into two parts which are not communicated with each other, and the main skin film 5 is in a wrinkled state in the initial state.

[0044] Left tray 4 and right tray 6; the left tray 4 and the right tray 6 are both sleeved on the valve cylinder 8, and are connected by locking nuts, and the main skin film 5 is clamped at the joint of the left tray 4 and the right tray 6.

[0045] Main valve spring 3; the main valve spring 3 is sleeved on the valve cylinder 8, and acts on the locking nut to press the valve cylinder 8 on the valve disc 10.

[0046] Air pressure adjusting mechanism; the left film cover 1 and the right film cover 7 are both provided with air holes, the air pressure adjusting mechanism is provided with two air outlets, one air outlet is communicated with one air hole, and the air pressure adjusting mechanism is used for controlling the pressure applied by the main valve spring 3 to the valve cylinder 8, as shown in the figure. Figure 2 The air pressure adjusting mechanism is composed of a pressure stabilizer 13 and a commander 14, the pressure stabilizer 13 is of a WYQ-10 / 10 type, and the commander 14 is of a ZV-8 / 4.0 type. In the embodiment, the part of the chamber composed of the main skin film 5 and the right film cover 7 and the part of the chamber composed of the main skin film 5 and the left film cover 1 are both closed structures.

[0047] Valve position indicator part 2; the valve position indicator part 2 is fixedly installed on the left film cover 1, the detection end of the valve position indicator part 2 is connected with the left tray 4 through the left film cover 1, when the left tray 4 is displaced, the valve position indicator part 2 displays the displacement amount, so as to obtain the pressure in the chamber.

[0048] In this embodiment, the pressure stabilizer 13 takes the inlet air pressure, and the inlet pressure P1 is stabilized to a certain relative value and input to the commander 14 as the air supply source of the commander 14; the pressure regulating spring force in the commander 14 and the force of the outlet pressure P2 on the diaphragm of the commander 14 jointly act on the valve port of the commander 14, thereby controlling the output pressure P3 of the commander 14; the output pressure P3 of the commander 14 is input into the right chamber composed of the main diaphragm 5 and the right diaphragm cover 7, and the left chamber composed of the main diaphragm 5 and the left diaphragm cover 1 is input with the outlet pressure P2; when the force of P3 on the main diaphragm 5 is greater than the resultant force of the force of P2 on the main diaphragm 5 and the force of the main valve spring 3, P3 pushes the main diaphragm 5, the tray and the valve cylinder 8 to move leftward to open the valve port, and vice versa; the size of P3 is controlled by the pressure regulating spring force of the commander 14 and the force of P2 on the diaphragm of the commander 14; when the outlet pressure P2 decreases due to the increase of the air consumption at the outlet end of the pressure regulator or other reasons, the pressure regulating spring of the commander 14 pushes the diaphragm of the commander 14 to open the valve port of the commander 14, thereby increasing P3, P3 pushes the main diaphragm 5 to move leftward to increase the opening degree of the valve port of the pressure regulator, thereby increasing the air supply at the outlet of the pressure regulator to increase P2; vice versa, P2 increases, the opening degree of the valve port of the commander 14 decreases, P3 decreases, the main diaphragm 5 moves rightward, the opening degree of the valve port of the pressure regulator decreases, the air supply decreases, and P2 decreases.

[0049] On the basis of the structure of the axial flow pressure regulator, the built-in silencer 9 and the external silencer 12 are additionally installed. The built-in silencer 9 is a small-hole injection type silencer. When the valve cylinder 8 is separated from the valve flap 10 and the valve seat, the gas flows out through the sound reduction holes of the built-in silencer 9. When the flow speed is high enough, the sound reduction holes of the built-in silencer 9 can shift the frequency spectrum of the exhaust noise to high frequency, so that the audible sound part in the noise frequency spectrum is reduced, thereby reducing the interference of noise on the environment. The external silencer 12 is provided with a sound reduction cylinder filled with springs. When the gas flow passes through the springs in the sound reduction cylinder, the springs in the sound reduction cylinder can absorb the kinetic energy of the gas flow impact, thereby reducing the gas flow speed and the flow noise. When the gas flow passes through the rectifier plate at the open end of the external silencer 12, the flow is diffused and decompressed in layers through multiple layers of perforated plates, thereby reducing the fluid pressure and flow speed, and integrating the flow direction to reduce the impact on the pipe wall, so as to reduce the noise.

Claims

1. A pressure regulator with sound attenuation, characterized in that The pressure regulator comprises: a left membrane cover (1) and a right membrane cover (7); the left membrane cover (1) and the right membrane cover (7) are connected by buckling to form a cavity, and the left membrane cover (1) and the right membrane cover (7) are each provided with a mounting hole; a valve cylinder (8); the valve cylinder (8) is arranged in the cavity, a first end of the valve cylinder (8) is arranged in the mounting hole of the left membrane cover (1) in a linearly slidable manner, a second end of the valve cylinder (8) is arranged in the mounting hole of the right membrane cover (7) in a linearly slidable manner, and a gas output end of a gas output device is in communication with the first end of the valve cylinder (8); a valve port seat (11); the valve port seat (11) is fixedly arranged on the outside of the right membrane cover (7), and the valve port seat (11) is provided with a valve clack (10) on a first surface thereof; an internal silencer (9); the internal silencer (9) is formed by sleeving a plurality of tubular structures, a plurality of sound reduction holes are arranged on the side wall of each tubular structure, the bottom end of the internal silencer (9) is fixedly arranged on the first surface of the valve port seat (11), the top end of the internal silencer (9) is fixedly arranged on the outside of the right membrane cover (7), and the port of the second end of the valve cylinder (8) is arranged opposite to the valve clack (10) after sequentially passing through the mounting hole of the right membrane cover (7) and the internal silencer (9); a resilient pressure mechanism; the resilient pressure mechanism is arranged in the cavity, and is used for pressing the valve cylinder (8) against the valve clack (10); the resilient pressure mechanism adjusts the pressure and flow rate of the gas flow by adjusting the gap between the port of the second end of the valve cylinder (8) and the valve clack (10).

2. The pressure regulator with sound attenuation of claim 1, wherein The pressure regulator further comprises an external silencer (12), and the external silencer (12) comprises: an air outlet pipeline; a first end of the air outlet pipeline is fixedly connected with the right membrane cover (7), and the valve port seat (11) is arranged in the air outlet pipeline; a sound reduction cylinder; a plurality of sound reduction holes are arranged on the top end and the bottom end of the sound reduction cylinder, a plurality of springs are filled in the sound reduction cylinder, the sound reduction cylinder is arranged in the middle section of the air outlet pipeline, and the gas sequentially passes through the top end and the bottom end of the sound reduction cylinder and then flows to the second end of the air outlet pipeline; at least one flow regulation plate; the flow regulation plate is arranged in the second end of the air outlet pipeline, and a plurality of sound reduction holes are arranged on the flow regulation plate.

3. The pressure regulator with sound attenuation of claim 1, wherein The resilient pressure mechanism comprises: a main skin membrane (5); the main skin membrane (5) is sleeved on the valve cylinder (8), the edge of the main skin membrane (5) is clamped at the joint of the left membrane cover (1) and the right membrane cover (7), and the main skin membrane (5) divides the cavity into two parts which are not in communication with each other; a left tray (4) and a right tray (6); the left tray (4) and the right tray (6) are each sleeved on the valve cylinder (8), the left tray (4) and the right tray (6) are connected by buckling a locking nut, and the main skin membrane (5) is clamped at the joint of the left tray (4) and the right tray (6); a main valve spring (3); the main valve spring (3) is sleeved on the valve cylinder (8), and the main valve spring (3) acts on the locking nut to press the valve cylinder (8) against the valve clack (10); a gas pressure adjusting mechanism; a gas hole is arranged on each of the left membrane cover (1) and the right membrane cover (7), the gas pressure adjusting mechanism is provided with two air outlets, one air outlet is in communication with one gas hole, and the gas pressure adjusting mechanism is used for controlling the pressure applied by the main valve spring (3) to the valve cylinder (8).

4. The pressure regulator with sound attenuation of claim 3, wherein The gas pressure adjusting mechanism comprises a pressure stabilizer (13) and a commander (14).

5. The sound attenuated pressure regulator of claim 1, wherein, The pressure regulator further comprises a valve position indicator part (2) arranged on the left membrane cover (1) or the right membrane cover (7), and the valve position indicator part (2) is used for displaying the pressure condition in the chamber.

6. The pressure regulator with sound attenuation of claim 3, wherein, The main skin membrane (5) is in a crumpled state in an initial state.

7. The pressure regulator with sound attenuation of claim 2, wherein, The air outlet pipe is in a trumpet shape, the first end of the air outlet pipe is a narrow end, and the second end is an open end.

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