CN202149260U

CN202149260U - Fuel gas pressure regulator

Info

Publication number: CN202149260U
Application number: CN201120278405U
Authority: CN
Inventors: 曾保平; 陈玲海
Original assignee: OUTELAI ENERGY EQUIPMENT CO LTD
Current assignee: OUTELAI ENERGY EQUIPMENT CO LTD
Priority date: 2011-08-02
Filing date: 2011-08-02
Publication date: 2012-02-22
Anticipated expiration: 2021-08-02

Abstract

The utility model discloses a fuel gas pressure regulator, comprising a valve body with an inlet cavity, an outlet cavity and a valve port for communicating the inlet valve and the outlet cavity; a pressure regulation chamber; a valve rod with one end connected with a main regulation film slice in the pressure regulation chamber and another end provided with a main regulation valve port gasket adaptive with the valve port; a cutting mechanism comprising sliding sleeve sleeved with the valve rod and a cutting valve port gasket arranged on the sliding sleeve and adaptive with the valve port; a pressure increasing chamber comprising a balance film slice connected with the valve rod, an upper cavity chamber and a lower cavity chamber separated from the upper cavity by the balance film slice, wherein the upper cavity chamber is communicated with the outlet cavity by the hole in the valve rod and the lower cavity chamber is communicated with the inlet cavity. The pressure difference between the outlet cavity of the fuel gas pressure regulator and the outlet pipeline is used to feedback the pressure increase, so as to open the fuel gas pressure regulator and increase the circulation performance.

Description

Gas pressure regulator, governor

Technical field

The utility model relates to a kind of gas pressure regulator, governor.

Background technique

In gas transmission and distribution system; Pressure governor is a kind of very important equipment in the gas works; Its function be when combustion gas demanding party operating mode changes, automatically regulate, stabilization of export pressure; It is changed in the precision of voltage regulation scope of regulation, guarantee combustion gas user security gas just commonly used, have certain safety protection function under normal conditions.

Pressure governor is one of key core parts in the combustion gas regulator, accounts for about 30% of overall cost, and the gas pressure regulator, governor of present domestic use can roughly be divided into two big types: i.e. high-voltage regulator and low pressure pressure governor.

In use, there is following problem in existing gas pressure regulator, governor:

One, the built-in cut-out of gas pressure regulator, governor band, the pressure governor existing problems, its major defect valve port can not be opened fully, is that the negotiability of this type pressure governor is little.

Two, the built-in cut-off valve of gas pressure regulator, governor, cut-off valve existing problems, its major defect is the raising along with inlet pressure, the moment of opening cut-off valve is increasing, pressure greater than 0.4MPa when above difficulty open, starting lever is yielding.

The model utility content

The main purpose of the utility model is to provide a kind of gas pressure regulator, governor, to improve the negotiability of gas pressure regulator, governor.

For this reason, the utility model provides a kind of gas pressure regulator, governor, comprising: valve body, the valve port that has snout cavity, outlet plenum and be communicated with snout cavity and outlet plenum; Surge-chamber is fixedly attached on the valve body, comprises the homophony diaphragm, is positioned at the controlling mechanism of homophony diaphragm upside and is positioned at the pressure feedback chamber that communicates with outlet conduit of homophony diaphragm downside; Valve rod, an end are connected to the homophony diaphragm in the surge-chamber, and the other end is provided with the homophony valve port pad suitable with valve port; Shutdown mechanism, comprise the sliding sleeve that is set on the valve rod, on sliding sleeve, be provided with the suitable cut-out valve port pad of valve port; And the pumping chamber, comprise balance diaphragm that is connected with valve rod and upper chamber and the lower chambers of separating by the balance diaphragm, wherein, upper chamber is communicated with outlet plenum through the inner hole of valve rod, and lower chambers is communicated with snout cavity.

Further, above-mentioned pressure regulation pumping chamber comprises: upper shell, be arranged in the pressure feedback chamber, and extend around valve rod; Lining is connected between valve body and the pumping chamber, extends around valve rod, and forms a closed chamber with upper shell; And fitting seat, be fixed on the valve rod, and be arranged in closed chamber, wherein, the interior ring edge clamping of balance diaphragm is located on the fitting seat, its outer ledge is folded between upper shell and the lining.

Further, above-mentioned fitting seat comprises briquetting that is positioned at balance diaphragm upside and the pressure pad that is positioned at balance diaphragm downside.

Further; The second bar section and the 3rd bar section that above-mentioned valve rod comprises the first bar section, is spirally connected with the first bar section, wherein, the 3rd bar section is a body; Be set in the bottom of the second bar section; Wherein, have first air flue that is communicated with upper chamber in the first bar section, the inner chamber of the 3rd bar section is communicated with outlet plenum, the second bar section has the air flue that is connected of the communication with cavity and first air flue.

Further, above-mentioned gas pressure regulator, governor also comprises: cut off the balance cylinder, form at the top of sliding sleeve and cut off counter balance pocket, wherein, cut off counter balance pocket and be communicated with outlet plenum.

Further, above-mentioned cut-out balance cylinder also comprises: interior guide pin bushing is positioned at the inside of sliding sleeve, between sliding sleeve and valve rod; Outer bush is set in the outside of sliding sleeve; And lining, be fixed together with interior guide pin bushing and outer bush, form at the top of sliding sleeve and cut off counter balance pocket.

Further, above-mentioned sliding sleeve and interior guide pin bushing between be spaced the twice ring liner.

Further, above-mentioned controlling mechanism comprises: regulate tube, be arranged on the surge-chamber; Regulate pressure cap, be screwed onto and regulate on the tube; Homophony spring positioning disk is fixedly connected on the platen of homophony diaphragm; Homophony spring position shelf is arranged on movably and regulates on the pressure cap; And the homophony spring, an end is positioned on the homophony spring positioning disk, and the other end is positioned on the homophony spring position shelf.

In the gas pressure regulator, governor of the utility model; When gas pressure regulator, governor is worked after the pressure spot imbalance; Utilize the pressure difference (poor approximately 20kPa) in gas pressure regulator, governor outlet plenum and the outlet conduit to feed back supercharging, the purpose that open the gas pressure regulator, governor valve port to reach, improves negotiability.In addition, cut off the balance cylinder, make to reach the stress balance of cut-out valve port pad in the closed position snout cavity pressures and change, open the purpose that moment does not increase through being provided with.

Except top described purpose, characteristic and advantage, other purpose, characteristic and the advantage that the utlity model has are with combining accompanying drawing to do further detailed explanation.

Description of drawings

Constitute the preferred embodiment that the part of this specification, the accompanying drawing that is used for further understanding the utility model show the utility model, and be used for explaining the principle of the utility model with specification.Among the figure:

Fig. 1 shows the structural representation according to the gas pressure regulator, governor of the utility model preferred embodiment;

Fig. 2 shows the structural representation according to the pumping chamber of the gas pressure regulator, governor of the utility model;

Fig. 3 shows the structural representation according to the valve rod of the gas pressure regulator, governor of the utility model;

Fig. 4 shows the partial schematic diagram of the cut-out balance cylinder of gas pressure regulator, governor shown in Figure 1; And

Fig. 5 shows the schematic representation according to the drive mechanism of the shutdown mechanism of the gas pressure regulator, governor of the utility model.

Description of reference numerals

10 valve bodies, 11 snout cavities

13 outlet plenums, 15 valve ports

20 surge-chambers, 21 homophony diaphragms

22 platens, 23 controlling mechanisms

231 regulate tube 232 regulates pressure cap

233 homophony spring positioning disks, 234 homophony spring position shelfs

235 homophony springs, 236 adjusting screw

25 pressure feedback chambeies, 30 valve rods

31 first bar sections, 32 second bar sections

33 the 3rd bar section 31a, first air flue

32a connects air flue 33a inner chamber

35 homophony valve port pads, 40 shutdown mechanisms

41 sliding sleeves 43 cut off the valve port pad

45 sliding sleeve baffle plates, 47 springs

46 excentric sleeves, 48 eccentric shafts

50 pumping chambers, 51 upper shells

53 linings, 55 fitting seats

57 balance diaphragms, 52 upper chamber

54 lower chambers 55a briquettings

55b pressure pad 60 cut-out balance cylinders

Guide pin bushing 63 outer bushs in 61

65 cut off counter balance pocket.

Embodiment

Embodiment to the utility model is elaborated below in conjunction with accompanying drawing, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.

Fig. 1 shows the structural representation according to the gas pressure regulator, governor of the utility model preferred embodiment.As shown in Figure 1, gas pressure regulator, governor comprises: valve body 10, surge-chamber 20, valve rod 30, shutdown mechanism 40, pumping chamber 50 and cut-out balance cylinder 60.

The valve port 15 that valve body 10 has snout cavity 11, outlet plenum 13 and is communicated with snout cavity 11 and outlet plenum 13.Preferably, the opening of the direction of the opening of snout cavity 11 and outlet plenum 13 in the opposite direction, the opening direction of valve port 15 is vertical basically with the direction of the snout cavity 11 and the opening of outlet plenum 13.

Surge-chamber 20 is fixedly attached on the valve body 10, the pressure feedback chamber 25 that communicates through the PRESSURE PIPE (not shown) with outlet conduit that comprises homophony diaphragm 21, is positioned at the controlling mechanism 23 of homophony diaphragm upside and is positioned at homophony diaphragm downside.Wherein, outlet conduit is that feed channel is used in the downstream that are communicated with outlet plenum 11.

One end of valve rod 30 is through the fixing homophony diaphragm 21 of platen 22, the homophony valve port pad 35 that the other end is fixedly connected and valve port 15 is suitable.

The working procedure of gas pressure regulator, governor is following: (for example 0.02～1.6Mpa) when getting into the snout cavity 11 of valve body 10 when pressure gas; Produce a downward opening force at valve port 15 places; Homophony valve port pad 35 is opened valve ports 15, and pressure gas gets into outlet conduit, build-up pressure in the outlet conduit (for example 1～30Kpa); Simultaneously, also build-up pressure in the pressure feedback chamber 25.

Controlling mechanism 23 comprises: regulate tube 231, being arranged on increases on the chamber 50; Regulate pressure cap 232, be screwed onto and regulate on the tube 231; Homophony spring positioning disk 233 is fixedly connected on the platen 22 of homophony diaphragm; Homophony spring position shelf 234 is arranged on movably and regulates on the pressure cap 232; And homophony spring 235, one ends are positioned on the homophony spring positioning disk 233, and the other end is positioned on the homophony spring position shelf 234, is used for applying an elastic force to platen 22.

Controlling mechanism 23 is used to set gaseous-pressure, in theory, and when increase of the gas consumption behind the outlet plenum or inlet pressure reduction; The pressure of outlet in the way just descends, the power that at this moment power that acts on the pressure feedback chamber is applied less than controlling mechanism 23 by the pressure of PRESSURE PIPE reflection, and the homophony diaphragm descends; Homophony valve port pad 35 is also along with valve rod moves down; Valve is opened greatly, and gas flow increases, and outlet pressure returns to original given numerical value.Otherwise when minimizing of the gas consumption after the outlet or inlet pressure rising, valve turns down, and flow reduces, and outlet pressure is restored.

In other embodiments, above-mentioned controlling mechanism 23 is replaced by weight.Also be provided with other accessories such as inhalation valve and indicating device on the surge-chamber, do not elaborate at this.Be appreciated that occasion, can adopt liner and O-ring seals to realize sealing in the needs sealing.

Existing gas pressure regulator, governor is when operation, and the outlet plenum pressure of gas pressure regulator, governor descends, and at this moment the pressure feedback chamber is not owing to there is gas flow, and pressure does not descend, and the power that makes progress of generation does not reduce, and causes gas pressure regulator, governor not open entirely.

In the utility model,, gas pressure regulator, governor after the pressure spot imbalance, utilize the pressure difference (poor approximately 20kPa) in gas pressure regulator, governor outlet plenum and the outlet conduit to feed back supercharging when working, open the gas pressure regulator, governor valve port.

Fig. 2 shows the structural representation according to the pumping chamber of the gas pressure regulator, governor of the utility model.As shown in Figure 2, pumping chamber 50 comprises upper shell 51, is arranged in pressure feedback chamber 25, extends around valve rod 30; Lining 53 is connected between valve body 10 and the surge-chamber 20, extends around valve rod 30, and forms an airtight chamber with upper shell 51; And fitting seat 55, be fixed on the valve rod 30, and be arranged in airtight chamber; Balance diaphragm 57, ring edge clamping is located on the fitting seat 55 in it, and outer ledge is folded between upper shell 51 and the lining 53, and airtight chamber is divided into upper chamber 52 and lower chambers 54.This fitting seat 55 is made up of the pressure pad 55b of the briquetting 55a balance diaphragm downside that is positioned at balance diaphragm upside.

Wherein, upper chamber 52 is communicated with outlet plenum 13 through valve rod 30 inner air flues, and lower chambers 54 is communicated with snout cavity 11.

Fig. 3 shows the structural representation according to the valve rod of the gas pressure regulator, governor of the utility model.As shown in Figure 3; Valve rod 30 comprise the first bar section 31, with the second bar section 32 and the 3rd bar section 33 that the first bar section 31 is spirally connected, wherein, the 3rd bar section 33 is a body; Be set in the bottom of the second bar section 32; Wherein, have the first air flue 31a that is communicated with upper chamber 52 in the first bar section 31, the inner chamber 33a of the 3rd bar section 33 is communicated with outlet plenum 13, the second bar section 32 have connection the 3rd bar section 33 inner chamber and the first bar section 31 the first air flue 31a be connected air flue 32a.

So, outlet plenum 13 is communicated with upper chamber 52 through inner chamber 33a, connection air flue 32a and the first air flue 31a all the time.In the present embodiment, pressure gas is communicated with lower chambers 52 through the gap between valve rod 30 and the interior guide pin bushing 61 by the lower end of interior guide pin bushing 61 (as shown in Figure 6).In other embodiments, lower chambers 52 directly is communicated with snout cavity through hole or the groove of offering on the lining 53.

The valve port area of gas pressure regulator, governor of the prior art is all less than the import latus rectum, and inlet pressure is high more, the valve port latus rectum is also just more little, and under the situation with bore, negotiability is also just poor, and flow is just little, big valve port is set usually to solve the little problem of flow.In the utility model, adopted the different technologies thinking to address this problem, increase the opening that a reaction force increases gas pressure regulator, governor thereby promptly utilize pressure difference gas to get into balance diaphragm epicoele through the valve rod intermediate hole.

Fig. 4 shows the partial schematic diagram of the cut-out balance cylinder of gas pressure regulator, governor shown in Figure 1, and Fig. 5 shows the drive mechanism according to the shutdown mechanism of the gas pressure regulator, governor of the utility model.In conjunction with reference to Fig. 1 and Fig. 4 and Fig. 5, shutdown mechanism 40 comprise the sliding sleeve 41 that is set on the valve rod 30, on sliding sleeve 41, be provided with the suitable cut-out valve port pad 43 of valve port 15, the sliding sleeve baffle plate 45 that is fixedly connected with sliding sleeve 41, the spring 47 that compresses sliding sleeve baffle plate 45.Sliding sleeve baffle plate 45 is connected with excentric sleeve 46, and excentric sleeve 46 is connected with eccentric shaft 48, and this eccentric shaft 48 stretches out outside the valve body 10, is connected with the starting bar (not shown).

When rotating starting bar 49, sliding sleeve baffle plate 45 moves down, and cuts off valve port pad 43 and is sealed and matched with valve port 15, plays the purpose of cutting off fuel gas supply.

Cutting off balance cylinder 60 comprises: interior guide pin bushing 61, between sliding sleeve 41 and valve rod 30; Outer bush 63 is set in the outside of sliding sleeve 41; End cap is made up of the lining 53 of pumping chamber 50, and interior guide pin bushing 61 is fixed on the lining 53 with outer bush 63, forms at the top of sliding sleeve and cuts off counter balance pocket 65.Be spaced the twice ring liner between sliding sleeve 41 and the interior guide pin bushing 61.

When cut-out valve port pad 43 was closed, outlet plenum 13 was communicated with cut-out counter balance pocket 65 through the gap between interior guide pin bushing 61 and the sliding sleeve 41.Make the stress balance of cut-out valve port pad in the closed position, this cuts off counter balance pocket 65 and is not communicated with snout cavity 11, and when snout cavity 11 pressure increased, opening moment can not increase naturally.Existing built-in cut-off valve then has inlet pressure high more, and the moment of opening cut-off valve is also with regard to big more shortcoming.

Gas pressure regulating valve according to the utility model; Improved the precision of voltage regulation AC of pressure governor, made the precision of voltage regulation bring up to 1%-5% from 10% of domestic production, augmented flow 35～50%; Closing pressure grade SG brings up to 15%, and closing pressure district grade SZ brings up to 10%.Solve the problem that the above valve port of domestic and international multiple direct acting type gas pressure regulator, governor inlet pressure 0.1MPa can not be opened fully.

The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.

Claims

1. gas pressure regulator, governor comprises:

Valve body (10), the valve port (15) that has snout cavity (11), outlet plenum (13) and be communicated with said snout cavity and outlet plenum;

Surge-chamber (20) is fixedly attached on the said valve body (10), comprises homophony diaphragm (21), is positioned at the controlling mechanism (23) of said homophony diaphragm (21) upside and is positioned at the pressure feedback chamber (25) that communicates with outlet conduit of said homophony diaphragm (21) downside;

Valve rod (30), an end are connected to the homophony diaphragm (21) in the said surge-chamber (20), and the other end is provided with the homophony valve port pad (35) suitable with said valve port (15);

Shutdown mechanism (40), comprise the sliding sleeve (41) that is set on the said valve rod, on said sliding sleeve, be provided with the suitable cut-out valve port pad (43) of said valve port,

It is characterized in that, also comprise:

Pumping chamber (50) comprises balance diaphragm (57) that is connected with said valve rod and upper chamber (52) and the lower chambers of being separated by said balance diaphragm (54),

Wherein, said upper chamber (52) is communicated with outlet plenum (13) through the inner hole of valve rod (30), and said lower chambers (54) is communicated with said snout cavity (11).

2. gas pressure regulator, governor according to claim 1 is characterized in that, said pumping chamber (50) comprising:

Upper shell (51) is arranged in said pressure feedback chamber (25), extends around said valve rod (30);

Lining (53) is connected between said valve body (10) and said pumping chamber (50), extends around said valve rod (30), and forms a closed chamber with said upper shell (51); And

Fitting seat (55) is fixed on the said valve rod (10), and is arranged in said closed chamber, and wherein, the interior ring edge clamping of said balance diaphragm (57) is located on the said fitting seat (55), its outer ledge is folded between said upper shell (51) and the lining (53).

3. gas pressure regulator, governor according to claim 2 is characterized in that, said fitting seat (55) comprises the briquetting (55a) that is positioned at said balance diaphragm (57) upside and is positioned at the pressure pad (55b) of said balance diaphragm (57) downside.

4. gas pressure regulator, governor according to claim 1 and 2; It is characterized in that; The second bar section (32) and the 3rd bar section (33) that said valve rod (30) comprises the first bar section (31), is spirally connected with the said first bar section, wherein, said the 3rd bar section (33) is a body; Be set in the bottom of the said second bar section (32); Wherein, have first air flue (31a) that is communicated with said upper chamber in the said first bar section (31), the inner chamber (33a) of said the 3rd bar section (33) is communicated with said outlet plenum (13), what the said second bar section (32) had connection said inner chamber (33a) and first air flue (31a) is connected air flue (32a).

5. gas pressure regulator, governor according to claim 1 is characterized in that, also comprises: cut off balance cylinder (60), form at the top of said sliding sleeve (41) and cut off counter balance pocket (65), wherein, said cut-out counter balance pocket (65) is communicated with said outlet plenum (13).

6. gas pressure regulator, governor according to claim 5 is characterized in that, said cut-out balance cylinder (60) also comprises:

Interior guide pin bushing (61) is positioned at the inside of said sliding sleeve (41), is positioned between said sliding sleeve (41) and the said valve rod (10);

Outer bush (63) is set in the outside of said sliding sleeve (41); And

Lining (53) is fixed together with said interior guide pin bushing (61) and outer bush (63), forms said cut-out counter balance pocket (65) at the top of said sliding sleeve (41).

7. gas pressure regulator, governor according to claim 6 is characterized in that, has been spaced the twice ring liner between said sliding sleeve and the said interior guide pin bushing.

8. gas pressure regulator, governor according to claim 1 is characterized in that, said controlling mechanism comprises:

Regulate tube (231), be arranged on the said surge-chamber (20);

Regulate pressure cap (232), be screwed onto on the said adjusting tube (231);

Homophony spring positioning disk (233) is fixedly connected on the platen (22) of said homophony diaphragm;

Homophony spring position shelf (234) is arranged on the said adjusting pressure cap (232) movably; And

Homophony spring (235), an end are positioned on the said homophony spring positioning disk (233), and the other end is positioned on the said homophony spring position shelf (234).