CN201196285Y

CN201196285Y - Valve body of gas pressure regulator

Info

Publication number: CN201196285Y
Application number: CNU2008200355297U
Authority: CN
Inventors: 金国平; 吴建伟; 刘宏亮; 王金流
Original assignee: CHANGZHOU CITY COSHIN GAS EQUIPMENT Co Ltd
Current assignee: Jiangsu Ke Xin gas-fired equipment Co., Ltd
Priority date: 2008-05-07
Filing date: 2008-05-07
Publication date: 2009-02-18
Anticipated expiration: 2018-05-07

Abstract

The utility model relates to a valve body for fuel gas pressure regulators, which can reduce noise. The valve body comprises an inlet, an outlet and a valve port arranged between the inlet and the outlet, wherein the pipe diameter of the inlet is less than that of the outlet. In the utility model, the pipe diameter of the inlet is less than that of the outlet, which is favorable for improving the situation that gas is in local disorder at the outlet after the gas pressure of the outlet is reduced, and ensures that the pressure of the outlet is steady, so as to prevent the generation of noise.

Description

A kind of valve body of gas pressure regulator, governor

Technical field

The utility model relates to a kind of city gas transmission pipeline network corollary equipment that belongs to, and is specifically related to a kind of valve body of gas pressure regulator, governor.

Background technique

At present, gas pressure regulator, governor is widely used on the city gas conveyance conduit.

Chinese patent literature notification number CN2636019 discloses a kind of gas pressure regulator, governor, by the main film between valve body, loam cake, bottom, valve port, the diaphragm lower casing that is connected valve body top, diaphragm upper casing, the diaphragm upper and lower shell, the valve rod being located at the balance film between homophony spring, balance film inner pallet and the loam cake on the diaphragm support and passing loam cake, balance film, balance film inner pallet, main film, pallet and be connected with valve, and the formations such as valve that are connected valve rod bottom, valve port below.Also be provided with shut-off means in the valve body chamber, investing inboard, valve body air outlet has the cut-out control mechanism.

Chinese patent literature notification number CN2432411 discloses a kind of gas pressure regulator, governor, and the valve body of pressure governor adopts the header structure, in establish valve seat and valve port; Wherein safety cut-off valve and main pressure regulator valve are connected on the same header; Main voltage regulator adopts the lever form to connect the horizontal type structure of valve port with horizontal valve rod; Safety cut-off valve adopts the pin that links to each other with the top cover to block the cut-out stem structure.

The import of the gas pressure regulator, governor valve body of above-mentioned prior art and the big or small basically identical of outlet; reach more greatly under the bigger situation of the pressure reduction of valve body inlet/outlet at flow; outlet pressure can produce some fluctuations; the local disorders that the gas of outlet occurs; cause valve body to send big noise; even whistle cry appears, be unfavorable for environmental protection.

The model utility content

Technical problem to be solved in the utility model provides the valve body of the less gas pressure regulator, governor of a kind of noise in use.

For solving the problems of the technologies described above, the utility model provides a kind of valve body of gas pressure regulator, governor, comprising: import, outlet and be located at import and the outlet between valve port; The caliber of described import is less than the caliber of outlet.

The caliber of described outlet is big 20 to 100 millimeters than the caliber of import.

The caliber of described outlet is 1.3 to 2.5 times of caliber of import.

Be provided with air entraining pipe in the outlet, on the sidewall of outlet or port is provided with areole; One end of air entraining pipe is free end and extends to outside the outlet, and the areole that its other end passes outlet is to link to each other with PRESSURE PIPE interface on the lower shell body of the main pressure regulator valve of gas pressure regulator, governor.

The areole of described outlet is provided with the sealing plug that is placed on the air entraining pipe.

The utlity model has positive effect: in (1) the utility model, the caliber of the import of gas pressure regulator, governor valve body is less than the caliber of outlet, help improving after the pressure drop of working off one's feeling vent one's spleen is low, gas is in the situation of the local disorders of outlet appearance, make outlet pressure more steady, thereby prevented the generation of noise.(2) in the utility model, can make the caliber of outlet big 20 to 100 millimeters according to the model or the traffic requirement of different pressure regulation gas, or to make the caliber of outlet be 1.3 to 2.5 times of caliber of import than the caliber of import, facts have proved that in this scope, valve body has noise reduction preferably.

Description of drawings

Fig. 1 is embodiment 1 the gas pressure regulator, governor and the assembly structure schematic representation of valve body.

Embodiment

(embodiment 1)

See Fig. 1, the valve body 6 of the gas pressure regulator, governor of present embodiment comprises: import 1, outlet 2 and be located at import 1 and export valve port 5 between 2.

Valve body 6 is provided with main pressure regulator valve 4, and main pressure regulator valve 4 comprises: housing, be located at main epithelium 4-3 in the housing, be located at pallet 4-4 on the main epithelium 4-3, be located at pallet 4-4 upper end pressure-regulating device 4-5, with vertical screw rod 4-6 that links to each other of pallet 4-4 and the pressure regulation valve pad 4-7 that is located at screw rod 4-6 lower end; The air pressure of main epithelium 4-3 below and the pressure of pressure-regulating device 4-5 balance each other, and the air pressure increase of main epithelium 4-3 below, then move on the screw rod 4-6, and the airflow clearance between pressure regulation valve pad 4-7 and the valve port 5 diminishes; Otherwise the air pressure of main epithelium 4-3 below diminishes, and it is big that the airflow clearance between pressure regulation valve pad 4-7 and the valve port 5 becomes.

Be provided with PRESSURE PIPE 3 in the outlet 2 of valve body 6, on the sidewall of outlet 2 or port is provided with areole; One end of PRESSURE PIPE 3 is free end and extends to outside the outlet 2, and its other end passes outlet 2 areole and links to each other with PRESSURE PIPE interface 4-2 on the lower shell body 4-1 of the main pressure regulator valve 4 of gas pressure regulator, governor.The areole of described outlet 2 is provided with the sealing plug 2-1 that is placed on the PRESSURE PIPE 3.

PRESSURE PIPE 3 is used for the air pressure of air outlet 2 eluting gass of valve body 6 is passed to the below of the main epithelium 4-3 of main pressure regulator valve 4; The end of PRESSURE PIPE 3 extends to outside the air outlet 2, with accurate transmission and the air pressure of outlet in 2 pipelines that link to each other, avoid the interference of gas of the higher pressure of air outlet 2 medial extremitys, thereby avoided main pressure regulator valve 4 that misoperations take place, improved the pressure regulation precision of main pressure regulator valve 4.

The selection of the inlet/outlet bore of the valve body of the gas pressure regulator, governor of present embodiment, as following table:

The pressure governor model	Import caliber (mm)	Outlet caliber (mm)	Peak rate of flow (m ³/h)
The pressure governor model	Import caliber (mm)	Outlet caliber (mm)	Peak rate of flow (m ³/h)	MBN/25	25	65	1000
MBN/40	40	80	2800	MBN/25	25	65	1000
MBN/40	40	80	2800	MBN/50	50	100	3500
MBN/65	65	100	4000	MBN/50	50	100	3500
MBN/65	65	100	4000	MBN/80	80	150	6500
MBN/100	100	200	8000	MBN/80	80	150	6500

Facts have proved: in the city gas transmission pipeline network, adopt the valve body in the above-mentioned tabulation to have noise reduction preferably.

Obviously, the above embodiment of the present invention only is for example of the present invention clearly is described, and is not to be qualification to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all mode of executions.And these belong to conspicuous variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.

Claims

1. the valve body of a gas pressure regulator, governor comprises: import (1), outlet (2) and be located at import (1) and export valve port (5) between (2); It is characterized in that: the caliber of described import (1) is less than the caliber of outlet (2).

2. the valve body of gas pressure regulator, governor according to claim 1, it is characterized in that: the caliber of described outlet (2) is big 20 to 100 millimeters than the caliber of import (1).

3. the valve body of gas pressure regulator, governor according to claim 1 is characterized in that: the caliber of described outlet (2) is 1.3 to 2.5 times of caliber of import (1).

4. according to the valve body of one of claim 1-3 described gas pressure regulator, governor, it is characterized in that: be provided with air entraining pipe (3) in the outlet (2), the sidewall of outlet (2) is provided with areole; One end of air entraining pipe (3) extends to outside the outlet (2), and the areole that its other end passes outlet (2) links to each other with PRESSURE PIPE interface (4-2) on the lower shell body (4-1) of the main pressure regulator valve (4) of gas pressure regulator, governor.

5. the valve body of gas pressure regulator, governor according to claim 4, it is characterized in that: the areole of described outlet (2) is provided with the sealing plug (2-1) that is placed on the air entraining pipe (3).