CN2636019Y

CN2636019Y - Gas presure regulator

Info

Publication number: CN2636019Y
Application number: CN 03269719
Authority: CN
Inventors: 谷红军; 谷红民
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-07-24
Filing date: 2003-07-24
Publication date: 2004-08-25
Anticipated expiration: 2013-07-24

Abstract

The utility model relates to a gas pressure regulator, which is improved from the existing direct-firing gas pressure regulator. The gas pressure regulator mainly comprises a valve body, a top cover, a bottom cover, a valve port, a lower diaphragm shell and an upper diaphragm shell that are connected to the upper part of the valve body, a main diaphragm between the upper shell and the lower shell, a main regulating spring pressed on a diaphragm tray, a balancing diaphragm that is used to balance the tray in the diaphragm and the top cover, and a valve stem that passes through the top cover, balancing diaphragm, tray in the balancing diaphragm, main diaphragm, and tray and is connected to the valve stem, and a flap connected on the bottom of the valve stem below the valve port. The gas pressure regulator is characterized in: a cut-off device is arranged in the cavity of the valve body, and a cut-off control device is attached to the inner side of the gas outlet on the valve body. The gas pressure regulator has high throughput capacity and a high pressure regulation range; the cut-off mechanism has good sealing performance, and is easy and simple to operate, and can be operated manually. The gas pressure regulator has complete function, improves the cut-off sensitivity and the service life, and integrates pressure regulation and safe cut-off; the entire pressure regulator is compact and easy to adjust and service.

Description

A kind of gas pressure regulator, governor

Technical field

The utility model relates to a kind of gas pressure regulator, governor, belongs to city gas transmission pipeline network corollary equipment.

Background technique

Along with the continuous development of gas cause, people propose higher requirement to quality, the performance of gas-fired equipment, and traditional gas-fired equipment is the demand in incompatibility market.With the gas pressure regulator, governor is example, domestic most widely used spring direct combustion pressure governor, though have characteristics such as volume is little, simple in structure, flow is big, reaction velocity is fast, be active in one's movements than ballast formula and pressure type, but also have the following disadvantages: pressure governor outlet pressure regulation range is little, equipment volume is big, the incompatible more and more tighter present situation in city space at present; Valve port bore and flow are little; Valve (flap) mostly is the cover rod-type, close poor performance, and assembly technical requirement is higher; Self be not with cut-out mostly, the band shut-off means is generally the pressure pin formula, cuts off low precision, for a long time need not, corrosion easily causes moving insensitive or is failure to actuate.Obviously, in order to satisfy the needs of growing city gas cause, the technology innovation of gas-fired equipment has become Professional visitors's common issue.

Summary of the invention

The purpose of this utility model is to provide a kind of gas pressure regulator, governor, and this pressure governor has that volume is little, negotiability is big, and precision of voltage regulation height, characteristics such as speed of response is fast, safety reliability is strong have overcome the defective of prior art.

In order to realize the purpose of this utility model, gas pressure regulator, governor of the present utility model has carried out bigger improvement to the structure of existing direct combustion pressure governor.The structure of concrete the utility model gas pressure regulator, governor is as follows, it is mainly by valve body, loam cake, bottom, valve port, be connected the diaphragm lower casing on valve body top, the diaphragm upper casing, on the diaphragm, main film between the lower casing, pallet, be pressed in the homophony spring on the diaphragm upper tray, balance film between balance film inner pallet and the loam cake, and pass loam cake, balance film, the balance film inner pallet, main film, pallet and the valve rod that is connected with valve, be connected the formations such as valve of valve rod bottom, also comprise the cut-out control mechanism that is located at the endoceliac shut-off means of valve and invests inboard, valve body air outlet in the structure.Described shut-off means is in the inner chamber of valve body, guide way by the guide rod that is enclosed within the valve rod periphery, guide rod periphery, guide way is provided with positioning disk, the cut-out main spring is arranged, with the kick-off valve of the shared valve rod of pressure governor valve, can contact the cut-out reset arm of guide way and drive the compositions such as cut-out release link that cut off the reset arm swing and link to each other between guide way and the loam cake with reset arm in the above-mentioned cut-out control mechanism.Cut off cut-out bar, the cut-out adjusting spring that cuts off the bar bottom, the circle cut-out movable disk of cut-out bar one side, movable disk support that control mechanism mainly is connected by cut-out diaphragm, cut-out pallet and cut-out pallet between cut-out diaphragm upper casing, cut-out diaphragm lower casing, the upper and lower shell, the cut-out drive link that is connected with cut-out movable disk support, and be enclosed within the cut-out lever arm that the cut-out reset arm on the cut-out release link is connected with the cut-out reset arm.

Cut off release link and establish the cut-out handle, can realize hand reset.

In order to realize artificial cut-out, cut off drive link and be provided with the hand off button.

The compared with prior art obtained technological progress of the utility model is: 1, the gas pressure regulator, governor negotiability is big; 2, the pressure governor valve is concentric with kick-off valve, has increased the leakproofness of cutting off; 3, the operation of cut-out control mechanism is light, simple, intuitive; 4, the cut-out manner of execution is various, can have three kinds of mode: A, superpressures to cut off automatically; B, decompression are cut off automatically; C, manually knob cut-out as required, multiple functional; 5, cut off bar and be designed to sliding rod type, improved the sensitivity of cutting off, prolong working life; 6, pressure regulation and safety cut-off are in one, and whole pressure governor volume is little, regulate easily, and maintenance is convenient.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the A-A cut-away view of Fig. 1.

Fig. 3 is the structural representation that cuts off control mechanism.

The implication of each label representative is as follows among the figure:

1, valve body 2, loam cake 3, diaphragm lower casing 4, main film 5, pallet 6, diaphragm upper casing 7, balance film 8, homophony spring 9, cut off release link 10, cut off reset arm 11, kick-off valve 12, valve port 13, valve rod 14, valve 15, bottom 16, cut off control mechanism PRESSURE PIPE interface 17, pressure governor PRESSURE PIPE interface 18, cut off diaphragm upper casing 19, cut off diaphragm 20, diaphragm support 21, cut off diaphragm lower casing 22, cut off bar 23, cut off movable disk 24, hand off button 25, cut off and regulate spring 26, cut off lever arm 27, cut off little button spring 28, cut off drive link 29, cut off handle 30, cut off reset arm 31, suction port 32, air outlet 33, cut off main spring 34, guide way 35, guide rod 36, balance film inner pallet 37, link 38, movable disk support 39, positioning disk.

Embodiment

The specific embodiment that provides below in conjunction with accompanying drawing and accompanying drawing is described further the utility model.

Referring to Fig. 1, gas pressure regulator, governor mainly comprises valve body 1, loam cake 2, bottom 15, valve port 12, be connected the diaphragm lower casing 3 on valve body top, diaphragm upper casing 6, on the diaphragm, main film 4 between the lower casing, pallet 5, be pressed in the homophony spring 8 on the diaphragm upper tray 5, balance film 7 between balance film inner pallet 36 and the loam cake 2, pass loam cake 2, balance film 7, balance film inner pallet 36, main film 4, pallet 5 and the valve rod 13 that is connected with valve 14, also comprise and be connected valve rod 13 bottoms, the valve 14 of valve port 12 bottoms, in valve body 1 chamber, be provided with shut-off means, invest 32 inboards, valve body 1 air outlet and be provided with the cut-out control mechanism.Said shut-off means is in the inner chamber of valve body 1, between main guide way 34, guide way 34 and the loam cake 2 main spring 33 of cut-out is arranged by the guide rod 35 that is enclosed within valve rod 13 peripheries, guide rod 35 peripheries, guide way is provided with positioning disk 39, with the bottle stopper shape kick-off valve 11 of valve 14 shared valve rods 13, can contact the cut-out reset arm 10 of guide way 34, the cut-out release link 9 that can drive 10 swings of cut-out reset arm and link to each other with reset arm 30 in the above-mentioned cut-out control mechanism.See Fig. 3, said cut-out control mechanism comprises cut-out diaphragm upper casing 18, cut off diaphragm lower casing 21, on, cut-out diaphragm 19 between the lower casing, cut off pallet 20, the cut-out bar 22 that is connected with cut-out pallet 20, cut off bar 22 bottoms the adjusting of cut-out spring 25 is arranged, cut off the circle of bar 22 1 sides and cut off movable disk 23, it is supported by movable disk support 38 and is provided with the cut-out bar is parallel, cut-out drive link 28 1 ends that are connected with movable disk support 38 have U-groove bevel, cut off lever arm 26 and be overlapped on the U-groove bevel position that cut-out drive link 28 1 ends are opened, cut off drive link 28 and connect hand off knob 24, cutting off reset arm 30 is enclosed within on the cut-out release link 9, reset arm 30 and 26 active connections of cut-out lever arm, cut off handle 29 and being fastenedly connected with cut-out release link 9.

Working principle of the present utility model is as follows:

See Fig. 1, gas enters the inner chamber of valve body 1 by suction port 31, and the valve port 12 of flowing through is to the air outlet 32.The outlet pressure signal is transmitted to main film 4 bottoms through external PRESSURE PIPE interface 17, and the homophony spring 8 on this power and main film 4 tops balances each other, and the equilibrium position has determined the gap of valve 14 and valve port 12.When flow increase or inlet pressure decline, outlet pressure descends thereupon to some extent, main film 4 bottom pressures descend, main film 4 and the valve rod 13 that links to each other thereof, valve 14 move down under 8 effects of homophony spring thereupon, valve 14 increases with valve port 12 gaps, flow increases thereupon, and it is normal that outlet pressure recovers.Otherwise when flow reduced or inlet pressure rises, main film 4 bottom pressures rose, main film 4 and the valve rod 13 that links to each other thereof, valve 14 under main spring 8 effects with on move, valve 14 dwindles with valve port 12 gaps, flow reduces thereupon, outlet pressure reduces.Reach the size of control air-flow thus, adjust the purpose of mouth pressure automatically.

See Fig. 3, pressure governor outlet pressure signal feeds back in cut-out diaphragm 19 tops that cut off control mechanism through cutting off the external PRESSURE PIPE interface 16 of control mechanism, and this pressure forms balance with cutting off the pressure of regulating spring 25, and kick-off valve 11 is in opening state.When changing, outlet pressure reaches when the operating pressure value is set, pressure balance is broken, cause cut-out bar 22 to move downward or upward, cutting off bar 22 forces cut-out movable disk 23 to drive the 38 outwards swings of cut-out movable disk supports, cut off drive link 28 rotations thereby make, owing to have U-groove bevel in cut-out drive link 28 1 ends and cut-out lever arm engaging position, cut off lever arm 26 and cut off drive link 28 dislocations, reset arm 30 and cut-out lever arm 26 break away from simultaneously, cut off reset arm 10 under the effect of cutting off main spring 33 to lower swing, and break away from guide way 34, guide way 34 continues to move down under the effect of cutting off main spring 33, promote kick-off valve 11 sealing valve ports 12, cut off air-flow, reach the safety cut-off purpose.

After fault is got rid of, if want to reset, move clockwise and cut off handle 29, cut off release link 9 and rotate thereupon, reset arm 30 and 26 engagements of cut-out lever arm are cut off lever arm 26 and are resetted with cut-out drive link 28, cut off release link 9 simultaneously and drive reset arm 10 guide way 34 picking-ups, move on the kick-off valve 11, valve port 12 is opened, and recovers ventilation.Under the effect of cutting off little torsion spring 27, cut off drive link 28 and rotate simultaneously, cut off lever arm 26 and reset, kick-off valve 11 is opened, and recovers ventilation.

Cut-out control mechanism in the utility model is also ad hoc push type hand off button 24 if think artificially to cut off air-flow, as long as start split key 24 with the have gentle hands flicking, can force the above-mentioned action of cut-out movable disk 23 execution, plays the hand off purpose.

Gas pressure regulator, governor assembling form of the present utility model can be designed to following several form according to customer requirements:

1, pressure governor band shut-off means, not only pressure regulation but also the safety cut-off function is arranged.

2, independent pressure governor promptly is not with safe cutting system.

3, safety cut-off separately.

Claims

1, a kind of gas pressure regulator, governor, comprise valve body (1) in the structure, loam cake (2), bottom (15), valve port (12), be connected the diaphragm lower casing (3) on valve body top, diaphragm upper casing (6), on the diaphragm, main film between the lower casing (4), diaphragm (4) top is provided with pallet (5), be pressed in the homophony spring (8) on the pallet (5), balance film (7) between balance film inner pallet (36) and the loam cake (2), pass loam cake (2), balance film (7), balance film inner pallet (36), main film (4), pallet (5) and the valve rod (13) that is connected with valve (14), it is characterized in that in valve body (1) chamber, valve rod (13) outside is provided with shut-off means, invests inboard, valve body (1) air outlet (32) and is provided with the cut-out control mechanism.Shut-off means is in the inner chamber of valve body (1), comprise and be enclosed within the peripheral guide rod (35) of valve rod (13), the peripheral guide way (34) of guide rod (35), between guide way (34) and loam cake (2), be provided with and cut off main spring (33), with the kick-off valve (11) of the shared valve rod of valve (14) (13), can contact guide way (34) cut-out reset arm (10), drive cut off reset arm (10) swing and with above-mentioned cut-out control mechanism in cut off the cut-out release link (9) that reset arm (30) links to each other.Cut off control mechanism and comprise cut-out diaphragm upper casing (18), cut off diaphragm lower casing (21), on, cut-out diaphragm (19) is arranged between the lower casing, below cutting off diaphragm (19), be provided with cut-out pallet (20), cutting off pallet (20) is connected with cut-out bar (22), cut off bar (22) bottom the adjusting of cut-out spring (25) is arranged, cut off bar (22) one sides the circular movable disk (23) of cutting off is arranged, it is supported by movable disk support (38), movable disk support (38) links to each other with cut-out drive link (28), cut off on the drive link (28) and have U-groove bevel, cut off lever arm (26) and be overlapped on the U-groove bevel position of opening on the cut-out drive link (28), cut off on the drive link (28) and be connected with hand off knob (24), cut off to be with on the release link (9) and cut off reset arm (30), reset arm (30) is connected with cut-out lever arm (26) is active, cuts off release link (9) and connects cut-out handle (29).

2, by the described gas pressure regulator, governor of claim 1, it is characterized in that the shared valve port of pressure governor and shut-off means (12), valve port (12) is big top and small bottom.

3, by the described gas pressure regulator, governor of claim 1, it is characterized in that kick-off valve (11) is concentric with pressure governor valve (14), be shaped as the bottle stopper shape.

4, by the described gas pressure regulator, governor of claim 1, it is characterized in that pressure governor valve (14) is installed on the bottom of valve port (12).

5,, it is characterized in that cutting off and cut off bar (22) in the control mechanism and separate setting with kick-off valve (11) by the described gas pressure regulator, governor of claim 1.

6, by the described gas pressure regulator, governor of claim 1, it is characterized in that cutting off bar (22) is sliding rod type.

7, by the described gas pressure regulator, governor of claim 1, it is characterized in that cutting off being connected with hand off knob (24) on the drive link (28).