CN2750144Y - Novel liquefied gas pressure relief valve assembly - Google Patents

Abstract

The utility model discloses a novel liquefied gas pressure-reducing valve component which comprises a detection tightening handle, a detection timing alarm circuit, interface nuts and a main valve body. When the tightening handle is connected with the interface nuts, the twisting force can be enhanced by pulling the handle so as to ensure the tightness of the interface part of a steel bottle. A slide valve sleeve component is arranged in a lower casing of the main valve body, and a slide valve is driven to move right and left through the connection of the slide valve sleeve component and a rubber cup by the way that the long end of a crank arm moves up and down; thus, the requirements of various operating states, such as normal air supply, back fire prevention, leakage prevention, automatic flameout prevention, etc. can be finished by opening or closing an air inlet. A reset handle is pulled to push the slide valve to release the closing state of a sealing block to recover the normal working state through a reset support frame, a spring base, the rubber cup, central screws and the crank arm. Because the detection timing alarm circuit is arranged on the detection tightening handle, audible and visual alarm signals can be sent out if the leakage phenomenon of combustible gas is detected. In addition, the utility model can be used for daily monitoring if the utility model is externally connected with a power supply.

Description

A kind of novel liquefied petroleum gas reduction valve assembly

The utility model relates to a kind of liquid gas air feed decompressor especially can be prevented because of pipe leakage or stove and accessory automatically extinguishing cause a large amount of excessive danger of blasting of liquid gas, and has backfireproof and detect the liquefied gas pressure regulator assembly of functions such as leakage alarm

At present, existing liquefied gas pressure regulator is mostly by pressure adjusting spring, rubber cup, crank arm, suction port is formed, though part has function of preventing back-fire, scarcely has the function that causes a large amount of excessive automatic cut-out air feed of liquid gas when pipeline or stove and accessory automatically extinguishing, and can't detect the position and the situation of gas leak, cause very big hidden danger to the user.The utility model personal experience just can overcome existing reduction valve deficiency and has automatic decompression air feed and function of preventing back-fire because of oneself gas leak worked out a kind of that blast, particularly can be the time because of pipeline breaking and stove and accessory automatically extinguishing, automatically cut off the air feed state, the masterpiece time spent forever keeps closed condition outside, simultaneously can check each leakage situation at any time, the concurrent visual alarm of speaking

The technological scheme that its technical problem that solves the utility model adopts is that the guiding valve external member is housed in main valve body, finish various job requirements at guiding valve block set inner spring, sealing block, seal, O-ring seal, guiding valve, external member and reseting handle, Returnning spring, the reset cradle of forming of cranking arm, and on the fastening handle of detection, be equipped with by combustible gas sensor, detect parts such as timing alarming circuit power supply external power interface.

Now the principle with regard to various working staties is discussed below,

1. sharply descend because of a large amount of excessive main valve body internal air pressures that cause take place for pipeline and stove and accessory automatically extinguishing when liquid gas, the pressure adjusting spring elongation, the drive rubber cup moves down, the long arm end of cranking arm is moved down, the galianconism cam part of cranking arm is rotated, the promotion guiding valve moves to right, sealing block is closed suction port with mobile in the same way the contacting with seal of guiding valve under spring action, cut off air supply channel, do not having under the external force effect, suction port is in closed condition all the time, guarantees safe in utilization, recover air feed as desire and can go up the pulling reseting handle mutually, by moving on reset cradle drive rubber cup and the central screw, by cranking arm guiding valve is moved to left, back down sealing block, liquid gas enters in the main valve body lower casing by suction port, recovers normal air feed state under pressure

2. as taking place, liquid gas tempering phenomenon liquid gas sharply raises in the main valve body internal pressure, when surpassing permitted value, leather cup is up, the compression pressure adjusting spring, drive is cranked arm long-armed up, and guiding valve is moved to right, contact with seal and to close air supply channel, the cut-out liquid gas is supplied with, and fault is recovered normal air feed state after getting rid of voluntarily

3. during normal air feed, after liquid gas enters the main valve body lower casing, make leather cup under gas pressure and spring acting in conjunction, by be fixed on spring seat on the leather cup and central screw drive crank arm make guiding valve with gas pressure change left and right displacement, sealing block and guiding valve are in opening state all the time, the liquid gas normal supply.

4. when cylinder for liquefied gas is installed, can use and detect fastening handle below projection bolt and interface nut osculum joint, increase torsion, prevent that because of the hand-power deficiency leakage phenomenon simultaneously can be by the power knob on the active handle, make the timing alarming circuit work that detects, detect each leakage phenomenon, and send the chimes of doom optical signal, to arouse attention.This circuit regularly is 10 minutes, then after outage voluntarily, as inserting ABAP Adapter, can make daily long term monitoring.

5. the beneficial effects of the utility model are during normal use the liquid gas that takes place because of pipeline, stove and accessory to be leaked and tempering phenomenon, implement effectively to close and cut off air feed assurance user safety, can make long term monitoring to the liquid gas using appliance simultaneously.Therefore have characteristics such as safe in utilization simple in structure.

Below in conjunction with drawings and Examples the utility model is further specified.

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

Fig. 2 is the sectional arrangement drawing of guiding valve external member of the present utility model

Fig. 3 is detection of the present utility model, warning, time circuit figure

Fig. 4 is detection of the present utility model, fastening handle arrangement figure

2. times valve bodies of 1. suction tude, 3. guiding valve external members, 4. central screws, 5. rubber cups, 6. spring seats, 7. pressure adjusting springs, 8. reset cradles, 9. nuts, 10. Returnning springs, 11. reseting handles, 12. pressure regulation nuts, 13. upper valve bodies, 14. steam outlet pipes, 15. interface nuts 16, the fastening handle 17 of detection, detection timing alarming circuit among Fig. 1

Embodiment: in Fig. 1, interface nut (15) is sleeved on the suction tude (1), guiding valve external member (3) is embedded in suction tude the inner, the long end of cranking arm of guiding valve external member (3) is plugged on central screw (4) and goes up and rubber cup (5), spring seat (6), pressure adjusting spring (7), reset cradle (8), nut (9), Returnning spring (10), reseting handle (11), pressure regulation nut (12), upper valve body (13) connects, and changes promotion rubber cup (5) drive central screw (4) by the interior gas pressure of following valve body (2) and makes the spool displacement in the guiding valve external member (3) finish every task.Pulling reseting handle (11) drive reset cradle (8), rubber cup (5), central screw (4), cranking arm of guiding valve external member (3) can make spool displacement recover the air feed state

1. guiding valve block sets, 2. springs, 3. sealing blocks, 4. seals, 5. O-ring seals, 6 guiding valves 7,8 pins, 9 plug screws of cranking arm among Fig. 2

Embodiment: guiding valve block set (1) part is embedded in the suction tude (1) among Fig. 1 in Fig. 2, guiding valve block set (1) medi-spring (2), sealing block (3), seal (4), O-ring seal (5), guiding valve (6), crank arm (7) be linked in sequence, when descending valve body (2) gas pressure change among Fig. 1, making (7) short end cam portion of cranking arm by (7) the long end movement of cranking arm serves as that axle rotates with pin (8), promote guiding valve (6) left and right displacement and make guiding valve (6) top seal cushion rubber (5) and seal (4), sealing block (3) breaks away from seal (4) or engages, and opens or closes suction port and finish normal air feed or backfireproof, anti-leak, the work of anti-automatically extinguishing.

In Fig. 3, when 1 gas detection, warning, time circuit detect liquid gas concentration above allowed band by gas transducer QM-N5, the resistance of the A of QM-N5, B two interpolars die-offs, B point current potential rises, when 10 pin current potentials of forced resetting end are lower than 1 volt, the starting of oscillation of IC556 multi-vibrator, send the alarm signal of 1KHZ oscillation frequency, LED 1 is glittering, QM-N5 recovered through 10 seconds when gas concentration is recovered just often, A, B two interpolars recover high value of resistance, and 556 were in the forced resetting state when B point current potential was lower than 0.4 volt.

2. time circuit, when pressing power knob, 6 volts of voltages are added on the IC556, and 5 pin of IC556 are high level when C3 charges, the bidirectional triode thyristor triggering and conducting, detection time circuit work, 556 and R1, RW1, C2 etc. form astable multivibrators, T=0.69* period of vibration (R1+RW) * C3, can adjust dutycycle by RW1, when the time to after 5 pin of IC556 be low level, bidirectional triode thyristor ends, circuit breaker.

When ABAP Adapter was inserted, the time circuit outage had only the detection alarm circuit working, can do long-time detection.

In Fig. 4,1. handle 2. projection bolts 3 battery holders 4. detections, warning, time circuit circuit board 5. combustible gas sensors 6. power knobs 7. external power supply sockets are formed.

Embodiment: this detects fastening handle (1) below two projection bolts (2) is housed, its upper cell seat (3) is equipped with No. seven batteries of four joints, positive and negative polarities connect by power knob (6) joint detection, warning, time circuit circuit board (4), the QM-N5 gas transducer is equipped with on top, external power supply socket is equipped with in the handle front, and below projection bolt (2) links to each other with interface nut (15) outside aperture among Fig. 1 when fastening.

Claims (2)

1. novel liquefied petroleum gas reduction valve assembly, by 1. suction tude, 2. descend valve body, 3. the guiding valve external member, 4. central screw, 5. rubber cup, 6. spring seat, 7. pressure adjusting spring, 8. reset cradle, 9. nut, 10. Returnning spring 11. reseting handles 12. pressure regulation nuts 13. upper valve bodies, 15. interface nuts, 16, detect fastening handle 17, detect timing alarming circuit and form, it is characterized in that: in the guiding valve external member 3, in guiding valve block set (1): spring (2), sealing block (3), seal (4), O-ring seal (5), guiding valve (6), (7) order of cranking arm link to each other.

2. a kind of novel liquefied petroleum gas reduction valve assembly according to claim 1 is characterized in that: 16, detect fastening handle, 17, detect timing alarming circuit and 15. interface nuts, 3. guiding valve external member and 2. times valve bodies are connected.

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