CN2189680Y - Multi-function pressure regulator for liquified gas - Google Patents

Abstract

The utility model belongs to a voltage regulator, particularly a domestic pressure regulator for liquid gas which has a pressure indicating mechanism, a timing control mechanism, a safety explosion proofing mechanism, and a pressure regulating mechanism. The utility model comprises a timer, an outflow control chamber, a pressure regulating chamber; one side of a valve body is provided with a gas inlet passage, and the other side is provided with a gas outlet passage; the gas inlet passage is provided with a venting valve, a ball valve, and a cup seal, and the inner part of the pressure regulating chamber is provided with a control board, a connecting rod, and a lower film; the control board is provided with an elliptical hole and a circular hole, and a movable door is provided with clamping grooves for installing sealing strips.

Description

Multi-function pressure regulator for liquified gas

The utility model belongs to a kind of pressure governor, refers in particular to a kind of have pressure indication, the household liquified vapour pressure governor of timing controlled, safety anti-explosive and pressure-regulating device.

The kind of liquefaction vapour pressure governor is many, wherein more advanced a kind of be to have pressure indicator, the pressure governor of functions such as timer, as 90216638.7 and 88220359,2 patent documentation is described to be exactly a class in this class pressure governor, but this class pressure governor is being found through after the repetition test, still have the following disadvantages: 1, control panel as critical piece in the pressure-regulating device directly inserts in the collar of following diaphragm, this Placement tends to cause the action of control panel axle dumb, sealing block on the control panel and valve nozzle clutch imprecision, following diaphragm is thin out-of-level, thereby influences the flow velocity etc. of combustion gas.2, be close to seal ring by the pearl valve and after cutting off when source of the gas, when depressing the depression bar of venting valve, because of the contact of depression bar and percussion pearl valve at outer 1/4 place of pearl valve sphere, make the pearl valve inwardly be subjected to downward oblique force and be difficult for or can not be shot down, cause gas circuit obstructed.3, the thickness of bowl ring has only 2 millimeters, and when the liquefied petroleum gas etch that is subjected to having than strong solubility, just softening transform easily causes its arrangement place imprecision in passage, produces string gas leakage, influences the realization of safety anti-explosive function.4, be attached to seal ring on the valve, fix, also can come unstuck, cause diaphragm seal and valve to get loose, and the metal erosion bits drop on the diaphragm seal surface, can cause place, table hole to leak gas again, influence timing function because of being subjected to the combustion corrosion by Bond or metal collar.

The purpose of this utility model is a kind of pressure governor that can overcome above-mentioned defective of design.

Its main technical schemes is that timer (17) is installed on the top of valve body (18), the middle part is for going out current control chamber (20), the bottom is surge-chamber (1), side at valve body (18) has gas-entered passageway (9), opposite side has the circulation road of going out (23), venting valve (14) is installed on the admission passage, and pearl valve (11) and bowl ring (10), installation and control plate (2) and connecting rod (3) and following diaphragm (4) in surge-chamber (1), the internal diameter of gas-entered passageway (9) has 4.5 millimeters at least, the internal diameter of the valve nozzle (16) between gas-entered passageway (9) and the surge-chamber (1) is the 1.3-2.1 millimeter, the degree of depth that goes out current control chamber (20) is at least 4 millimeters, and the chamber of surge-chamber (1) is at least 29.3 millimeters deeply; Long-round-shape hole (27) is arranged on control panel (2), a close end that is installed in the sealing block (8) on the control panel is a bigger circular port (26) in the long-round-shape hole, the thickness of the bowl ring on the admission passage (9) is at least 4 millimeters, the projection plane, lower end of the depression bar (13) in the venting valve (14) is positioned at the place, exterior edge face of bowl ring (10), a draw-in groove (25) that diaphragm seal (24) is installed is arranged on valve (22), in venting valve (14), depression bar (13) is positioned at fixing bolt (30) and gland (28) center, and can slide up and down at nut (30) center, between gland (28) and bolt (30), spring (29) is arranged.There are two seal rings (31) joint at depression bar (31) and bolt (30).

The utility model has the advantages that 1, guaranteeing out that steam pressure meets under the situation of technical requirements of ZBP45001-90 regulation, enlarged the degree of depth of internal diameter and the control room and the surge-chamber of admission passage and valve nozzle, thereby reduced the stream pressure loss, improved the rated flow of output.

2, circular and long-round-shape hole are arranged on the control panel, after connecting rod is put into circular port and slipped into the long-round-shape hole again, just can not cause the action of control panel axle ineffective, or connecting rod situation about coming off from control panel;

3, after the thickness of bowl ring reaches 4 millimeters, but when mounted just without just fix tightly of adhesive, thereby the erosion of the vapour that can not liquefied and being out of shape; In addition, the depression bar in the venting valve is pressing down when shooting down the pearl valve of suction on bowl ring, because of the contact of depression bar lower end surface and pearl valve more than 1/2 place of pearl valve, therefore, can guarantee to depress the pearl valve smoothly, avoid fault;

4, diaphragm seal is directly installed in the draw-in groove of valve, without Bond, thereby also can not influence being connected of diaphragm seal and valve because of the corrosion of liquefaction vapour, so sealability is better.

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

Fig. 2 is valve structure figure

Fig. 3 is the control panel structural drawing

Fig. 4 is the venting valve structural drawing

As shown in the figure: timer (17) is installed on the top at valve body (18), the middle part is for going out current control chamber (20), the bottom is surge-chamber (1), side at valve body connects admission passage (9), opposite side connects circulation road (23), has valve nozzle (16) to be communicated with between admission passage (9) and the surge-chamber (1).

In surge-chamber (1), control panel (2) utilizes rotating shaft (32) to be connected on the valve body (18), one end of control strip sealing block (8) can be close on the valve nozzle, be with connecting rod (3) in the slotted hole of the other end, connecting rod (3) is connected on the following diaphragm (4) that is anchored on the valve body, the another side of following diaphragm has scisse (5) and pressure adjusting spring (6), and the end in addition of Regulation spring (6) contacts with the adjusting bolt (7) on the valve body.At surge-chamber and go out valve (22) is arranged between the current control chamber (20), one end of valve (22) passes surge-chamber and the wall that goes out the current control chamber (33) and goes out the current control chamber and contact with diaphragm (34) between the timer (17), the other end is positioned at surge-chamber, the diaphragm seal (24) that is positioned at the middle draw-in groove (25) of valve can be close on the aforesaid wall (34), and, on this wall (34), have plum blossom hole (21), go out the current control chamber and go out circulation road (23) and be communicated with.

Venting valve (14) is installed on admission passage (9), bolt in the venting valve (30) is fastened on the projection (12) of admission passage, there is depression bar (13) centre of bolt, the upper end of depression bar (13) connects gland (28), the outer wall of gland (28) covers on the bolt outside, spring (29) is arranged between gland and the bolt, seal ring (31) is arranged between bolt and depression bar.In admission passage (9), the position that venting valve (14) is installed is placed with pearl valve (11) and bowl ring (10), and the manometric hole of storage (15) is installed in the admission passage in addition.

During work, earlier regularly, switch plate (19) on the timer (17) backs down valve by upper diaphragm (34), make between diaphragm seal on the valve and the wall (33) and leave the gap, liquefaction vapour with pressure enters surge-chamber through the sealing block that admission passage and valve nozzle back down control panel one end, and then plum blossom hole enters out the current control chamber on gap through between valve and wall (33) and the wall (33), arrives the combustion gas tool through going out circulation road again.After timing arrives, switch plate withdrawal (state as shown), valve is close under spring action on the wall (33), is in closed condition.

Work as overpressure, when steam flow speed is excessive, the power that steam flow impacts sealing block on the control panel becomes big, make the gap between sealing block and valve nozzle become big, when the surge-chamber internal air pressure reaches certain pressure, just force down the diaphragm pressure spring, the leverage by connecting rod (3) and control panel makes the gap between sealing block and valve nozzle can be not excessive, realizes automatic Regulation according to this.

When burner leaks air and during the generation accident, steam flow speed strengthens suddenly, just can blow the pearl valve, the pearl valve is stuck in the bowl ring and closes the vapour source automatically, get rid of when fault, when through-flow again,, the pearl valve separated with bowl ring get final product as long as depress depression bar.

Claims (4)

1, liquefaction vapour Multi-functional voltage regulator, timer (17) is installed on top at valve body (18), the middle part is for going out current control chamber (20), the bottom is surge-chamber (1), side at valve body (18) has admission passage (9), opposite side has the circulation road of going out (23), venting valve (14) and pearl valve (11) and bowl ring (10) are installed on the admission passage, installation and control plate (2) and connecting rod (3) and following diaphragm (4) in surge-chamber (1), the internal diameter that it is characterized in that admission passage (9) has 4.5 millimeters at least, the internal diameter of the valve nozzle (16) between admission passage (9) and the surge-chamber (1) is the 1.3-2.1 millimeter, go out at least 4 millimeters of the degree of depth of current control chamber (20), the chamber of surge-chamber (1) is at least 29.3 millimeters deeply.Long-round-shape hole (27) is arranged on control panel (2), and a close end that is installed in the sealing block (8) on the control panel is a bigger circular port (26) in the long-round-shape hole.

2, pressure governor according to claim 1 is characterized in that the thickness of the bowl ring (10) on the admission passage (9) is at least 4 millimeters, and the projection plane, lower end of the depression bar (13) in the venting valve (14) is positioned at the place, exterior edge face of bowl ring (10).

3, pressure governor according to claim 1 is characterized in that the draw-in groove (25) that has diaphragm seal (24) is installed on valve (22).

4, pressure governor according to claim 1, it is characterized in that in venting valve (14), depression bar (13) is positioned at fixing bolt (30) and gland (28) center, and can slide up and down at the center of bolt (30), between gland (28) and bolt (30), spring (29) is arranged, two seal rings (31) are arranged in the joint of depression bar (13) and bolt (30).