CN2366704Y - Device for regulating pressure of fuel supply specially for gas boiler - Google Patents
Device for regulating pressure of fuel supply specially for gas boiler Download PDFInfo
- Publication number
- CN2366704Y CN2366704Y CN 99204668 CN99204668U CN2366704Y CN 2366704 Y CN2366704 Y CN 2366704Y CN 99204668 CN99204668 CN 99204668 CN 99204668 U CN99204668 U CN 99204668U CN 2366704 Y CN2366704 Y CN 2366704Y
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- feedback signal
- gas
- signal passage
- pressure regulator
- special
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Abstract
The utility model relates to a special pressure regulating device for a gas boiler. A floating covering is arranged on a breathing hole; a gas outlet end of a valve body is a flaring gas flowing passage; a feedback signal passage can be an internal type feedback signal passage or an external type feedback signal passage, and the narrowest pipe diameter is 10 to 25 mm. A starting point of the feedback signal passage is positioned inside the flaring gas flowing passage, and a terminal point is positioned below a leather diaphragm; the leather diaphragm is vertical to a valve rod of an actuating mechanism, and the lower end of the valve rod is provided with a valve core. The special pressure regulating device for a gas boiler has the advantages that the sensitivity is high, the reaction speed is quick, the structure is simple, and the surge at the time of the change of flow quantity can be avoided. The utility model is particularly suitable for the gas pressure regulation with characteristics the emergent opening and emergent closure of persons using boilers.
Description
The utility model relates to a kind of gas transmission and distribution pressure regulator.
Along with improving constantly of city rate of gasification, the big gas user quantity straight line of gas fired-boiler, gas engine rises, this class combustion gas user with the gas characteristics is: changes in flow rate is a saltant, has only standard-sized sheet and complete shut-down two states, and the sudden change meeting of this pressure exerts an adverse impact to the downstream burner.Existing common pressure regulator incompatibility boiler class user, its spiracle is breathed untimely, feedback signal passage start position is in the turbulent region, and caliber has only 8 millimeters of Ф, and the pressure signal transmission is untimely, seal spool is not good enough, as be used in the boiler class with in the gas burning system, and can cause executing agency can not in time regulate valve port opening, the defective of surge appears when flow changes suddenly, need further to improve its sensitivity, design a kind of anxious special-purpose pressure regulator of boiler of opening anxious pass characteristics that adapts to.
The purpose of this utility model provides the special-purpose pressure regulator of a kind of gas fired-boiler, improves its sensitivity, can regulate anxious air-flow realization voltage stabilizing of opening anxious pass.
The technical scheme of the special-purpose pressure regulator of the utility model gas fired-boiler: this pressure regulator comprises valve body, air inlet, the gas outlet, the feedback signal passage, sensing element, spiracle, valve port, executing agency and the spool that is connected with executing agency, sensing element comprises epithelium and spring, it is characterized in that: be equipped with a unsteady covering that is furnished with passage on the spiracle, the outlet side is a flaring type gas flow in the valve body, the narrowest caliber of feedback signal passage is the 10-25 millimeter, feedback signal passage starting point is positioned at flaring type gas flow, terminal point is positioned at the epithelium below, epithelium is vertical with the valve rod of executing agency, and there is spool the valve rod lower end.
Unsteady covering on the above-mentioned spiracle is floating sheet or hat lid.
The contact-making surface of above-mentioned spool and valve port is a sphere.
Be the valve rod accurate positioning, can there be a piston above-mentioned spool lower end.
Above-mentioned feedback signal passage can be built-in, and starting point is positioned at flaring type gas flow, the injecting chamber through the piston below, and by the piston center, air channel from valve rod, the terminal point of arrival epithelium below.
Above-mentioned feedback signal passage also can be an external, and starting point is positioned at flaring type gas flow, by in the valve body or the outer gas pipeline of valve body, arrives the terminal point of epithelium below.
The operation principle of the present utility model and the course of work: the utility model is the direct acting type pressure regulator, before pressure regulator does not start, valve port is in the complete opening state, when pressure regulator will start, need the certain aperture of the valve open of downstream line is slowly opened upstream valve then, treat that air communication feeds back to the epithelium below rapidly after crossing valve port, make pressure regulator reach a suitable aperture, realize the effect of pressure regulation.When user's flow changes, must cause the variation of pressure, the pressure signal of this variation in time is transported to the below of epithelium by the feedback pressure signal passage, compare with the power of spring, the valve rod of driving pressure regulator executing agency moves up and down according to the variation of feedback signal, make valve port reach suitable aperture, the assurance user security is used gas stably.In running, when executing agency action hour, floating sheet in the spiracle drops on the pneumostome place by deadweight, the breathing of air is finished by the passage in the middle of the floating sheet, when gas flow has sudden change, the air-flow of spiracle is also bigger, and floating sheet can be regulated circulation automatically according to the direction that air-flow is breathed, and makes the sensitive action of executing agency.
The utility model has the advantages that: the special-purpose pressure regulator of this gas fired-boiler is highly sensitive, reaction speed is fast, simple in structure, sphere valve pad good seal performance, executing agency is difficult for skew, and feedback signal is picked up accurately, avoided the turbulent region at valve port place, surge when spiracle has been avoided changes in flow rate is applicable to the adjusting of combustion gas discharge pressure, and being specially adapted to the boiler user has the anxious gaseous-pressure of opening anxious pass characteristics to regulate.
Below in conjunction with drawings and Examples the utility model is described in detail:
Fig. 1 is the structural representation of the utility model embodiment one.
Embodiment one: the special-purpose pressure regulator of gas fired-boiler comprises valve body 11, air inlet 13, gas outlet 14, built-in feedback signal passage, sensing element, spiracle, valve port, executing agency and the valve pad that is connected with executing agency, sensing element comprises epithelium 4, epithelium holding piece 12 and spring 1, and epithelium 4 adopts 0.5 millimeter ultra-thin diaphragm; Spiracle is a hat type, and spiracle exports 3 places and is equipped with the floating sheet 2 that is furnished with passage, and the passage diameter is a Ф 1-5 millimeter; Spool 5 is a sphere with the contact-making surface of valve port; Executing agency comprises and the spool 5 of epithelium 4 valve rods 7 connected vertically, valve rod 7 lower ends and the piston 8 of spool 5 lower ends that the valve rod lower end is by piston and spool location; The gas outlet gas flow is a flaring type 10, and feedback signal passage 6 leads to the injecting chamber 9 of drawing together plug 8 belows, through the air flue of 20 millimeters of Ф 15-Ф in the valve rod, arrives the epithelium below from air flue outlet 15.
Embodiment two: external feedback signal passage is the difference with embodiment one, the starting point of feedback signal passage is positioned at flaring type gas flow, by in the valve body or the outer gas pipeline of valve body, arrive the terminal point of epithelium below, the narrowest caliber of gas pipeline is Ф 17 millimeter.
Claims (6)
1, the special-purpose pressure regulator of a kind of gas fired-boiler, comprise valve body, air inlet, the gas outlet, the feedback signal passage, sensing element, spiracle, valve port, executing agency and the spool that is connected with executing agency, sensing element comprises epithelium and spring, it is characterized in that: be equipped with a unsteady covering that is furnished with passage on the spiracle, the outlet side is a flaring type gas flow in the valve body, the narrowest caliber of feedback signal passage is the 10-25 millimeter, feedback signal passage starting point is positioned at flaring type gas flow, terminal point is positioned at the epithelium below, epithelium is vertical with the valve rod of executing agency, and there is spool the valve rod lower end.
2, the special-purpose pressure regulator of gas fired-boiler according to claim 1 is characterized in that: the unsteady covering on the described spiracle is floating sheet or hat lid.
3, the special-purpose pressure regulator of gas fired-boiler according to claim 1, it is characterized in that: the contact-making surface of described spool and valve port is a sphere.
4, the special-purpose pressure regulator of gas fired-boiler according to claim 1, it is characterized in that: there is a piston described spool lower end.
5, according to claim 1 and the special-purpose pressure regulator of 4 described gas fired-boilers, it is characterized in that: described feedback signal passage is built-in, and starting point is positioned at flaring type gas flow, injecting chamber through the piston below, by the piston center, air channel from valve rod, the terminal point of arrival epithelium below.
6, the special-purpose pressure regulator of gas fired-boiler according to claim 1, it is characterized in that: described feedback signal passage is an external, starting point is positioned at flaring type gas flow, by in the valve body or the outer gas pipeline of valve body, arrives the terminal point of epithelium below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99204668 CN2366704Y (en) | 1999-02-12 | 1999-02-12 | Device for regulating pressure of fuel supply specially for gas boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99204668 CN2366704Y (en) | 1999-02-12 | 1999-02-12 | Device for regulating pressure of fuel supply specially for gas boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2366704Y true CN2366704Y (en) | 2000-03-01 |
Family
ID=33999385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99204668 Expired - Fee Related CN2366704Y (en) | 1999-02-12 | 1999-02-12 | Device for regulating pressure of fuel supply specially for gas boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2366704Y (en) |
-
1999
- 1999-02-12 CN CN 99204668 patent/CN2366704Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |