CN87203181U

CN87203181U - Packing box with vertical hole and ring groove water channal

Info

Publication number: CN87203181U
Application number: CN 87203181
Authority: CN
Inventors: 王晓东
Original assignee: SHENYANG GAS COMPRESSOR FACTORY
Current assignee: SHENYANG GAS COMPRESSOR FACTORY
Priority date: 1987-03-18
Filing date: 1987-03-18
Publication date: 1987-11-25

Abstract

The utility model discloses a sealing stuffing box which is used for a reciprocating type gas compressor. The sealing stuffing box which is vertical to a through hole can cool a water channel through adopting an annular groove, and a gap is communicated between the annular groove and a water inlet. The utility model which needs not a specific tool has the advantages of compact structure, simple manufacturing process, high productive efficiency, and good cooling effect. Compared with the existing equipment, the sealing stuffing box can reduce the cost more than two thirds.

Description

Packing box with vertical hole and ring groove water channal

The utility model belongs to the pressurized gas Sealing, is applicable to the cooperation place of the cylinder and piston bar of reciprocal compressor.

High pressure-temperature gas in the reciprocal compressor cylinder is easy to leak out between piston rod and cylinder.Normally assemble Packed stuffing box as Sealing, be installed in the cooperation place of piston rod and cylinder with one.Because temperature is up to 160～180 ℃ in the cylinder, because the high-speed friction between piston rod and the filler produces frictional heat, operating conditions is abominable, so filler very easily damages again.In order to improve the operating conditions of filler and piston rod, improve the life-span, need in stuffing box, feed circulating water and cool off.Owing to the difference of cooling water passage form, formed the stuffing box of multiple structure.The for example Soviet Union's product introduced of the fifties and U.S., day, meaning, the moral product of introducing in recent years, its basic structure all is that a stuffing box is joined a spacer ring, all have circular groove on the side of spacer ring and stuffing box, both are buckled together and form between a water annulus, particularly its water inlet and the water annulus is (as the Fig. 5) that is communicated with by 45 ° the hole of tilting.This structural manufacturing process complexity needs special tool; Use one group of stuffing box to need, increased the axial dimension of sealing configuration, and junction plane increases with the identical spacer ring of stuffing box quantity, poor thermal conductivity, and improve relatively in man-hour, cost.

Various stuffing boxes without spacer ring have appearred in recent years, as connecing the welding type stuffing box that forms by two boxing that have inside and outside annular groove, though cooling effect is good, and the manufacturability complexity, cost is too high, generally need not.Reciprocal compressor proprietary technology from the introduction of West Germany Borsig company, obtain B. P. 1230114, the water channel of its stuffing box, be be parallel on the stuffing box cut away symmetrically on two strings of diameter two arc, with a cylinder one group of stuffing box is assembled, the water channel of formation, but its cooling is local, the circumferential non-uniform temperature of filler, circumferential expansion is different.Also have a kind of similar stuffing box of going up example, it is in filler box body periphery four crescent shape of mill off symmetrically, makes the filler box body become cruciate flower shape, though circumferentially temperature can be more even, to process with cylindrical bar milling cutter and pattern because of need, man-hour is too high, involve great expense, can not widespread usage; Also have a kind of horse shoe shaped water channel stuffing box, have the horse shoe shaped groove as water channel in the stuffing box side, it also must mill out at leisure with cylindrical bar milling cutter, and man-hour is many, and cost is too high, few at present using.

Task of the present utility model provides a kind of good cooling results, and without spacer ring, saving of labor, material-saving, cost are lower than the straight hole annular groove water channel stuffing box of existing various structured packing boxes at present.

The utility model is achieved in that the circular groove of one side Vehicle Processing at circular stuffing box, bore a vertical through hole in the circular groove, the circular groove outer ring, with the through hole homonymy or be separated by 180 ° and locate to bore a blasthole, and, to being used for first stuffing box of one group of stuffing box, logical gap will be milled between its circular groove and the blasthole.During use one group of stuffing box is combined headed by the stuffing box that gap is arranged, cooling water flows into circular groove from the gap from water inlet first stuffing box farthest, through hole from circular groove flows to next stuffing box one by one again, makes the filler in the stuffing box obtain cooling.

The utility model can be used machined into owing to adopt the circular groove water channel to add gap, does not need rat holing, do not need special-purpose mold, so manufacturing efficiency obviously improves the corresponding reduction of cost.Simultaneously,, conduct heat because water channel is near stuffing box packing, the cooling effectiveness height, effective.

Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof:

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

Fig. 2 is the left view of Fig. 1

Fig. 3 is the utility model ssembly drawing

Fig. 4 is a cooling water circulation schematic representation

Fig. 5 is the structural representation of spacer ring formula stuffing box

According to Fig. 1～4, filler box body 5 is annular metalworks, process a circular groove 1 at disc one sidecar, over entry hole 3 of sidetracking outside circular groove 1, other bores two screw holes 6, a vertical through hole 2 is bored in inside at circular groove 1, and respectively there is a seal groove 7 both sides of circular groove 1, can filling sealed cushion rubber.

Filler box body 5 has three kinds:

Mill logical gap 4 between " I ", circular groove 1 and the blasthole 3, and through hole 2 is positioned on the same diameter with blasthole 3, but is separated by 180 °;

Do not have gap 4 between " II ", circular groove 1 and the blasthole 3, and through hole 2 is positioned on the same radius with blasthole 3;

Do not have gap 4 between " III ", circular groove 1 and the blasthole 3, and through hole 2 is positioned on the same diameter with blasthole 3, but is separated by 180 °.

When being assembled into black box, earlier filler box body 5 is installed filler and O-ring seal, only be placed on first of one group of stuffing box by " I " type then, " II " type and " III " type are successively alternately, the blasthole 3 of each stuffing box is aimed at mutually, uses flange 8, gland 9 and bolt tightening then.

In conjunction with the accompanying

drawings

3,4, cooling water is the blasthole 3 that enters stuffing box from the inlet of gland 9, from entering circular groove 1 away from the gap 4 on first stuffing box " I " of inlet, water in circular groove 1, divide two strands along the two halves circumferential flow to the 4 one-tenth 180 ° through hole of locating 2 places of gap, flow to by through hole 2 in the circular groove 1 of second stuffing box " II ", same moisture two plumes are crossed 180 °, flow in the circular groove 1 of the 3rd stuffing box " III " from the through hole 2 of second stuffing box ... flow out up to the through hole 2 from last stuffing box, the water outlet on gland 9 is discharged.The sum of stuffing box can generally should be got odd number as required.

The utility model compact conformation, good cooling results, the production efficiency height, cost is low, compares with spacer ring formula stuffing box, and totle drilling cost descends 2/3rds, compares with the stuffing box of other structure, and cost descends more.

Claims

1, the stuffing box that uses on a kind of gas compressor with reciprocating, particularly straight hole annular groove water channel stuffing box, it by the filler box body and on the cooling water blasthole, seal groove, cooling water channel and screw hole constitute, and it is characterized in that:

1.1 bosh is the circular groove 1 of filler box body 5 sides, and the vertical through hole 2 that leads to next stuffing box is arranged in the circular groove 1, and an over entry hole 3 is arranged on the outer ring of circular groove 1;

1.2 the position of vertical through hole 2 has two kinds: be positioned at same radius or be positioned to be separated by 180 ° with water inlet 3 and locate;

1.3 be used for first stuffing box of one group of stuffing box, its vertical through hole 2 is separated by 180 ° with blasthole 3, and between blasthole 3 and the circular groove 1 gap 4 is arranged.