CN201141515Y

CN201141515Y - Anti-leakage drainer of gas pipeline

Info

Publication number: CN201141515Y
Application number: CNU2007200888136U
Authority: CN
Inventors: 钱红辉; 李慧珍; 陈磊; 周小昆; 周彬彬
Original assignee: Wuhan Iron and Steel Group Corp
Current assignee: Wuhan Iron and Steel Group Corp
Priority date: 2007-12-07
Filing date: 2007-12-07
Publication date: 2008-10-29
Anticipated expiration: 2017-12-07

Abstract

The utility model provides a gas pipeline anti-leakage drainer aiming at the problems that the gas anti-leakage performance of the prior gas pipeline drainer is bad, and the water level can not be displayed conveniently. The gas pipeline anti-leakage drainer comprises a high pressure chamber (2) of the drainer, a low pressure chamber (4) of the drainer, a drain pipe (5), and also comprises a gas anti-leakage device, wherein, the gas anti-leakage device comprises a connecting pipe (9), a guide rod (10), a sealing plate (11), a sealing ring (12), a sealing rubber ring (13) and a sealing sleeve (8); the sealing sleeve (8) is covered at the middle upper part on the side wall of the connecting pipe (9), the connecting pipe (9) is arranged below the sealing plate (11), the sealing ring (12) is fixed at the middle part on the side wall of the sealing sleeve (8), the sealing ring (12) is connected with the sealing plate (11) through the guide rod (10), at least two guide rods are provided, the sealing plate (11) can move vertically along the guide rod (10), the sealing rubber ring (13) is arranged on the sealing ring (12), the connecting pipe(9) is arranged at the middle upper part on the side wall of the low pressure chamber (4) and is communicated with the low pressure chamber (4), and the drain pipe (5) is arranged at the upper part on the side wall of the sealing sleeve (8), and is communicated with the sealing sleeve (8). The gas pipeline anti-leakage drainer can prevent gas leakage after being broken by gas, the water level is easy to be observed, simultaneously, the structure is simple, the manufacturing cost is low, the maintenance is easy, the normal water drain when the discharge of water is huge can be achieved, the water also can be saved, and the environmental pollution is reduced.

Description

Gas pipe line anti-leak hydathode

Technical field

The utility model relates to a kind of gas pipeline drainer that the metallurgy industry coal gas system uses.

Technical background

In metallurgy industry gas transmission and distribution system process, because variation of temperature, a large amount of saturation waters will be separated out from coal gas, for guaranteeing the safe operation of pipe network, must in time carry out manual emission or coal gas drainer is set realizing getting rid of automatically continuously condensed water, it is an indispensable important device in the gas transmission and distribution system.

As the hydathode of traditional gas pipe line, its working principle is to utilize the water seal height that forms in the dust flue insertion water of gas pipe line to be higher than gas pressure in the pipe network, the coal gas sealing is not leaked, and liquid can normally be discharged.

But, in actual use, gaspipe network pressure superelevation usually can appear and be higher than the water seal water level or hydathode in the lack of water water level phenomenon in gas pressure is fallen, make coal gas puncture water seal and a large amount of the leakage, usually cause taking place the coal gas accident.Simultaneously, also need replenish a large amount of water for the sake of security, waste a large amount of water and increased pollution to keep hydathode water seal height of water level.

As same device in the past, more typically have: Chinese patent 200520045458.5, in its patent documentation, drainage means mainly is made up of the tube ring body that can float, cylindrical shell will be evacuated, in interior ring bottom annular foot valve seat is housed, the valve plate member has hinge to be connected with annular foot valve seat, can realize that water level shows and the effect of sealing coal gas.Its shortcoming is a complex structure, and manufacture difficulty is bigger, and cost is higher, simultaneously, when water displacement occurs than great fluctuation process, usually can make valve plate jack-up and influences normal draining.

The model utility content

Poor at existing gas pipeline drainer gas leakage preventing, as can not conveniently to show water level problem, the utility model provides a kind of gas pipe line anti-leak hydathode.It can prevent the gas leakage after hydathode is punctured by coal gas, is easy to observe water level, and the while is simple in structure, fabricating cost is low, easy maintenance, can realize the normal draining when water displacement is big again.

The utility model comprises hydathode hyperbaric chamber 2, hydathode low-pressure cavity 4 and waste pipe 5, comprises also that wherein gas leakage preventing device, described gas leakage preventing device comprise connecting tube 9, guide rod 10, sealing plate 11, seal ring 12, O-ring seal 13 and stuffing box gland 8; Stuffing box gland 8 covers on connecting tube 9 sidewall middle and upper parts, and connecting tube 9 is below sealing plate 11, seal ring 12 is by being fixed on the stuffing box gland 8 middle part sidewalls, seal ring 12 is connected with sealing plate 11 by guide rod 10, guide rod 10 is at least two, sealing plate 11 can move up and down along guide rod 10, O-ring seal 13 is set on the seal ring 12, connecting tube 9 is arranged on the middle and upper part of hydathode low-pressure cavity 4 sidewalls, and communicate with draining low-pressure cavity 4, waste pipe 5 is arranged on the top of stuffing box gland 8 sidewalls, and communicates with stuffing box gland 8.

Further, described hydathode low-pressure cavity 4 tops are provided with level displaying device, and level displaying device comprises gauge 6, floating drum 7, guide cylinder 14 and end cap 15; Guide cylinder 14 is welded in hydathode low-pressure cavity 4 upper walls, and is inserted in the hydathode low-pressure cavity 4, and end cap 15 is arranged on guide cylinder 14 tops, and gauge 6 and floating drum 7 are arranged on guide cylinder 14 inside, and floating drum 7 is connected with gauge 6.

Preferably, described guide rod 10 is three.

Preferably, described guide rod 10 can be the cylindrical column shape.

Preferably, described seal ring 12 by a pair of flange be fixed on stuffing box gland 8 middle parts and with stuffing box gland 8 concentrics.

More preferably, described floating drum 7 is connected with gauge 6 by screw thread or welding.

Further, be carved with water-line target on the described gauge 6.

Further, the end of described connecting tube 9 is a mesh-like.

The utlity model has following advantage:

1. prevent effectively that coal gas from leaking.In the using process, if hydathode is breakdown, then the coal gas of Guo Louing can make the gas leakage preventing device closure, stops coal gas to efflux, and can avoid occurring the security incident that causes owing to gas leakage.

2. can judge easy, reliably according to level displaying device height of water level in the hydathode low water level to be replenished in time, guarantee the hydathode sealing effect.

Since water seal height easily observe, safe, evaporating surface is little, so do not need continuous moisturizing, can significantly reduce water consumption, reduce and pollute.

4. simple in structure, reliable performance.The main member sealing plate of gas leakage preventing device, seal ring, guide rod all do not need very high machining accuracy.

Description of drawings

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

Fig. 2 is a gas leakage preventing device structural representation of the present utility model;

Fig. 3 is a level displaying device structural representation of the present utility model.

Embodiment

With reference to Fig. 1, Fig. 2 and Fig. 3, the utility model is arranged on the ground, adopt two-stage Seal cage discharge structure, its two-stage Seal cage is respectively hydathode hyperbaric chamber 2 and hydathode low-pressure cavity 4, one dividing plate 3 is arranged between hydathode high low pressure chamber, on dividing plate 3, be provided with an insertion tube 18, be inserted into the bottom of hydathode low-pressure cavity 4, the height of insertion tube 18 is the water seal height of this cavity, and two cavity water seal height sums should be greater than gas pressure.Dust flue 1 links to each other with gas pipe line, and dust flue 1 is provided with valve and test head, inserts from the top of hydathode hyperbaric chamber 2, and dust flue 1 leaves certain interval in the bottom.When the condensed water of gas pipe line enters hydathode hyperbaric chamber 2 through dust flue 1, insertion tube on dividing plate 3 18 enters hydathode low-pressure cavity 4 then, level displaying device is arranged on the top of draining low-pressure cavity 4, its inner floating drum 7 is along with the water level in the gas pipe line anti-leak hydathode just fluctuates, drive gauge 6 and fluctuate, show the height of water level at any time.Connecting tube 9 is arranged on the middle and upper part of draining low-pressure cavity 4 sidewalls, and communicate with draining low-pressure cavity 4, stuffing box gland 8 covers on the connecting tube 9 middle and upper part sidewalls, and connecting tube 9 is below sealing plate 11, waste pipe 5 is arranged on the top of stuffing box gland 8 sidewalls, and communicate with stuffing box gland 8, can carry out dismounting easily like this.Generally speaking, gas leakage preventing device is often opened, and condensation flow is discharged to the outside through connecting tube 9, gas leakage preventing device and waste pipe 5.If hydathode is punctured by coal gas, then the coal gas of certain pressure makes the gas leakage preventing device closure, stops that coal gas leaks.

Hydathode low-pressure cavity 4 of the present utility model is provided with a water-adding pipe 17, manually can add water in the chamber according to the situation of the gauge in the level displaying device 6, to guarantee the pressure of water in the chamber.At the top of connecting tube 9 opening or cleaning cleaning bottom of hole, can avoid sealing plate 11 surperficial accumulated slags regularly by clean-out hatch cleaning sealing plate 11, guarantee the sealing effect when leakage preventer is closed.Connecting tube 9 ends are the needs that mesh-like can satisfy gas pipe line anti-leak hydathode water displacement, but disperse water flow path direction again avoids occurring floating when water displacement increases suddenly the sealing plate 11 in the leakage preventer, influences the normal draining of hydathode.

See figures.1.and.2, gas leakage preventing device comprises connecting tube 9, guide rod 10, sealing plate 11, seal ring 12, O-ring seal 13 and stuffing box gland 8.Seal ring 12 is fixed on stuffing box gland 8 middle parts and in stuffing box gland 8 concentrics, seal ring 12 is connected with sealing plate 11 by guide rod 10, and guide rod 10 is at least 2, and sealing plate 11 can move up and down along guide rod 10, and O-ring seal 13 is set on the seal ring 12.

Under the normal condition, because deadweight, sealing plate 11 is positioned at guide rod 10 bottoms, and condensed water flows to row to the outside by the space between sealing plate 11 and the seal ring 12.Breakdown when hydathode, the gas of certain pressure promotes that sealing plate 11 moves and when touching seal ring 12, O-ring seal 12 contact with seal ring 12, produces seal action on guide rod 10, and prevention coal gas leaks.

Preferably, above-mentioned seal ring 12 by a pair of flange be fixed on stuffing box gland 8 middle parts and with stuffing box gland 8 concentrics.

Preferably, the quantity of above-mentioned guide rod 10 is three, and guide rod can also be the cylinder column.

With reference to Fig. 3, level displaying device comprises gauge 6, floating drum 7, guide cylinder 14 and end cap 15.Guide cylinder 14 is welded in hydathode low-pressure cavity 4 upper walls, and inserts as arrive in the hydathode low-pressure cavity 4, and end cap 15 is arranged on guide cylinder 14 tops, and gauge 6 and floating drum 7 are arranged on guide cylinder 14 inside, and floating drum 7 is connected with gauge 6.

Floating drum 7 is connected with gauge 6 by screw thread or welding, uses these two kinds of Placements that floating drum 7 closely is connected with gauge 6.Be carved with water-line target on the gauge 6, floating drum 7 and gauge 6 fluctuate along guide cylinder 14 with water level height in the hydathode, can conveniently observe the height of water level like this.End cap 15 seals.

Need to prove in addition; the exemplary illustration that present embodiment is just done the utility model; do not limit protection domain of the present utility model; in actual use; those skilled in the art can also change to realize same purpose its structure; the modification of making for the utility model is not need to pay creative work, is considered as being equal to replacement to of the present utility model, all should be within the protection domain of this patent.

Claims

1. gas pipe line anti-leak hydathode, comprise hydathode hyperbaric chamber (2), hydathode low-pressure cavity (4) and waste pipe (5), it is characterized in that also comprising gas leakage preventing device, described gas leakage preventing device comprises connecting tube (9), guide rod (10), sealing plate (11), seal ring (12), O-ring seal (13) and stuffing box gland (8); Stuffing box gland (8) covers on connecting tube (9) sidewall middle and upper part, and connecting tube (9) is in sealing plate (11) below, seal ring (12) is by being fixed on the sidewall of stuffing box gland (8) middle part, seal ring (12) is connected with sealing plate (11) by guide rod (10), guide rod (10) is at least two, sealing plate (11) can move up and down along guide rod (10), O-ring seal (13) is set on the seal ring (12), connecting tube (9) is arranged on the middle and upper part of hydathode low-pressure cavity (4) sidewall, and communicate with draining low-pressure cavity (4), waste pipe (5) is arranged on the top of stuffing box gland (8) sidewall, and communicates with stuffing box gland (8).

2. low-pressure gas pipeline anti-leak hydathode according to claim 1, it is characterized in that described hydathode low-pressure cavity (4) top is provided with level displaying device, level displaying device comprises gauge (6), floating drum (7), guide cylinder (14) and end cap (15); Guide cylinder (14) is welded in hydathode low-pressure cavity (4) upper wall, and be inserted in the hydathode low-pressure cavity (4), end cap (15) is arranged on guide cylinder (14) top, and gauge (6) and floating drum (7) are arranged on guide cylinder (14) inside, and floating drum (7) is connected with gauge (6).

3. gas pipe line anti-leak hydathode according to claim 1 is characterized in that described guide rod (10) is three.

4. gas pipe line anti-leak hydathode according to claim 1 is characterized in that described guide rod (10) can be the cylindrical column shape.

5. gas pipe line anti-leak hydathode according to claim 1, it is characterized in that described seal ring (12) by a pair of flange be fixed on stuffing box gland (8) middle part and with stuffing box gland (8) concentric.

6. gas pipe line anti-leak hydathode according to claim 2 is characterized in that described floating drum (7) is connected with gauge (6) by screw thread or welding.

7. gas pipe line anti-leak hydathode according to claim 2 is characterized in that being carved with water-line target on the described gauge (6).

8. gas pipe line anti-leak hydathode according to claim 1 is characterized in that institute's connecting tube (9) end is a mesh-like.