CN201934779U

CN201934779U - Valve

Info

Publication number: CN201934779U
Application number: CN2010206535727U
Authority: CN
Inventors: 虞明; 张帮云; 杨利斌
Original assignee: Pangang Group Steel Vanadium and Titanium Co Ltd; Pangang Group Panzhihua Steel and Vanadium Co Ltd
Current assignee: Pangang Group Steel Vanadium and Titanium Co Ltd; Pangang Group Panzhihua Steel and Vanadium Co Ltd; Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
Priority date: 2010-12-11
Filing date: 2010-12-11
Publication date: 2011-08-17
Anticipated expiration: 2020-12-11

Abstract

The utility model discloses a valve, which can lubricate a sealing part and has higher reliability. The valve comprises a valve body, a valve shaft and a valve plate arranged on the valve shaft; a valve body sealing is arranged between the valve body and the valve plate, the valve shaft is in clearance fit with the valve body, a valve shaft sealing structure is arranged between the valve shaft and the valve body, oil seal is arranged in both positions where the two ends of the valve shaft are matched with the valve body, a refuel pipeline, which leads to a valve shaft clearance between the valve shaft sealing structure and the valve body sealing, is arranged on the valve body, a switch valve is arranged on the refuel pipeline, and an oil storage groove is arranged on the valve shaft corresponding to the port of the refuel pipeline. Therefore, the problems that the opening, closing and regulating disabler of the traditional valve caused by corrosion and medium blockage at the sealing part of the valve shaft can be eliminated, the working reliability of the valve is improved, the service life of the valve is prolonged, and the valve can be used for reforming newly manufactured valves and old valves, is simple and convenient, and is particularly applicable for the reformation of the valves with low manufacture precision.

Description

Valve

Technical field

The utility model relates to a kind of valve.

Background technique

Valve is the controlling component in the fluid delivery systems such as metallurgy, petrochemical industry, power station, long-distance transport pipes, papermaking, nuclear industry, various cryogenic engineering, aerospace and offshore oil production, have water conservancy diversion, by, adjusting, throttling, prevent adverse current, functions such as shunting or overflow release.

Valve is divided into types such as block valve class, safety check class, modulating valve class, diverter valve class, safety valve class by purposes and effect.Common is the block valve class, promptly is mainly used in the MEDIA FLOW of blocking or connecting in the pipeline.As stop valve, gate valve, ball valve, stopcock, butterfly valve etc.

At present, there is following problem in Chang Yong valve at its sealing position:

First, at the valve seal position because medium is long-term and valve body, valve shaft generation chemical reaction, cause the corrosion thing with valve shaft and valve body locking, cause that valve can not be finished unlatching flexibly, reliably, closes, regulatory function, lose due effect, influence is kept the safety in production, and can not guarantee the safe and reliable operation of energy medium system equipment.

The second, the sealing position of valve, valve shaft and valve body are gapped, because dust, dirty thing gather for a long time at the valve seal position in the medium, cause dirty thing with valve shaft and valve body locking, the flexible unlatching of valve, close, regulatory function lost efficacy, valve loses due effect.

For example, the valve of on blast furnace gas, coal gas of converter conveyance conduit, installing, because of relatively more complicated composition such as tar impurity, naphthalene, hydrogen sulfide, ammonia, hydrogen, methane, hydrocarbon, water is arranged in the coke-stove gas, and hydrogen, ammonia, tar, naphthalene etc. have corrosive action, particularly corrosion quickening under the effect of moisture content in coal gas, materials such as tar, naphthalene enter valve shaft sealing position will cause valve shaft and valve body locking.

The model utility content

For the valve shaft that the overcomes existing valve deficiency with respect to the easy jam of rotation of valve body, technical problem to be solved in the utility model provides and a kind ofly can provide lubricated, the valve that reliability is higher at the sealing position.

The technological scheme that its technical problem that solves the utility model adopts is: valve, comprise valve body, valve shaft and be arranged on valve plate on the valve shaft, be provided with valve seal between valve body and the valve plate, it between valve shaft and the valve body Spielpassung, be provided with the valve shaft sealing configuration between valve shaft and the valve body, the two ends of valve shaft and valve body cooperation place are provided with oil sealing, offer the oiling pipeline in the valve shaft gap of leading between valve shaft sealing configuration and the valve seal on the valve body, and described oiling pipeline is provided with switch valve.

Valve shaft corresponding to described oiling pipeline port is provided with oil storage tank.

The degree of depth≤the 5mm of described oil storage tank.

The two ends of described valve shaft respectively are provided with two oiling pipelines that are mutually symmetrical and arrange.

The beneficial effects of the utility model are: eliminated conventional valves and sealed position because of corrosion at its valve shaft, medium stops up and causes valve opening, close, the problem that regulatory function lost efficacy, improved the reliability of valve event, prolonged the working life of valve, guaranteed the safe and reliable operation of pipe-line system, at metallurgy, petrochemical industry, the application prospect that outbalance is arranged on the valve controlling component in the fluid delivery systems such as long-distance transport pipes, can be used for the new system valve or old valve is transformed, simple and easy to do, be particularly suitable for the not high valve transformation of accuracy of manufacturing own.

Description of drawings

Fig. 1 is the schematic representation of former valve mechanism.

Fig. 2 is the schematic representation of the utility model valve mechanism.

Fig. 3 is the partial enlarged drawing of Fig. 2.

Be labeled as valve seal 1, valve plate 2, valve body 3, valve shaft sealing 4, valve shaft sealing gland 5, handwheel 6, valve shaft 7, switch valve 8, oiling pipeline 9, oil sealing 10, end cap 11, seal ring 12, oil storage tank 13, valve shaft gap 14 among the figure.

Embodiment

Below in conjunction with accompanying drawing the utility model is further specified.

As shown in Figure 1, existing valve mechanism mainly comprises valve body 3, valve shaft 7 and is arranged on valve plate 2 on the valve shaft 7, be provided with valve seal 1 between valve body 3 and the valve plate 2, be Spielpassung between valve shaft 7 and the valve body 3, be provided with the valve shaft sealing configuration between valve shaft 7 and the valve body 3, but the valve shaft sealing configuration inevitably has to leak and exists, therefore, after valve uses a period of time, will cause the corrosion of valve shaft 7 or the obstruction in valve shaft gap 14 because of the gap that the medium in the conveyance conduit of place is invaded between valve shaft 7 and the valve body 3, influence valve function.

For addressing the above problem, as Fig. 2, shown in Figure 3, the utility model all is provided with oil sealing 10 in the two ends and valve body 3 cooperation places of valve shaft 7, and offering the oiling pipeline 9 that leads to the valve shaft gap 14 between valve shaft sealing configuration and the valve seal 1 on the valve body 3, described oiling pipeline 9 is provided with switch valve 8, before the valve working, utilize in the valve shaft gap 14 of oiling pipeline 9 between valve shaft and valve body and charge into lubricant grease, grease-filled this space, thus the intrusion of pipeline internal medium reduced, simultaneously, also lubricated valve shaft 7, and because the seal action of oil sealing 10, grease can not enter pipeline substantially, does not influence the normal conveying function of pipeline.

As shown in Figure 3, for guaranteeing the grease filling effect in a period of time, should be provided with the oil storage tank 13 of annular corresponding to the valve shaft 7 of described oiling pipeline 9 ports, the grease of filling can add in the valve shaft gap 14 in the oil storage tank 13.

The degree of depth of described oil storage tank 13 should not be dark excessively, and one is below 5mm, and suggestion is that 2～5mm gets final product, in order to avoid influence the strength and stiffness of valve shaft because of working depth is excessive, influences the valve safe operation.

As Fig. 2, shown in Figure 3, for realizing the on-line maintenance of described valve, preferably respectively be provided with two oiling pipelines 9 that are mutually symmetrical and arrange at the two ends of described valve shaft 7, even because of grease replenishes not enough, pipeline medium is invaded the gap between valve shaft 7 and the valve body 3 and when resulting in blockage, can be with one in two oiling pipelines 9 access high-temperature steam, and mouth is diffused in another conduct, impurity in the gap is melted and blows down, thereby recover the normal function of valve.

Embodiment:

As shown in Figure 2, valve of the present utility model comprises valve body 3 and valve shaft 7, be connected with valve plate 2 on the valve shaft 7, an end of valve shaft 7 passes valve body 3 and is connected with handwheel 6, is provided with filler 4 and valve shaft sealing gland 5 between the valve shaft 7 of this end one side and the valve body 3 as the valve shaft sealing configuration; The other end of described valve shaft 7 is connected in valve body 3 and with end cap 11, seal ring 12 between end cap 11 and end cap 11 and the valve body 3 is also as the valve shaft sealing configuration, the two ends that cooperate with valve body 3 at valve shaft 7 are provided with oil sealing 10 respectively, between at one end the oil sealing 10 and filler 4, and between the oil sealing 10 of the seal ring 12 and the other end, all there is valve shaft gap 14, on valve body 3, offered the oiling pipeline 9 of two groups of belt switch valves 8, the valve shaft gap 14 of leading to this two place respectively, so that to wherein filling grease, reduce the pipeline medium intrusion and lubricate valve shaft 7, guarantee the valve proper functioning.

The utility model also can be used for existing valve is transformed, and transformation process is as follows:

Hole 4 in the valve body position symmetry near filler 4, as refueling pipeline 9, fatten valve 4 covers are installed in tapping, and specification is decided according to the size of valve body, is advisable to make things convenient for fatten.DNS00 and above specification valve body select for use DN15 oiling valve to be advisable, and the following specification valve body of DNS00 selects for use DN5 or DN10 oiling valve to be advisable.

Select oil sealing 10 for use according to the specification of valve shaft 7, pass the valve body inboard of valve body 3 at valve shaft 7 and locate two outside framework oil seal mounting holes of machining, oil sealing 10 is installed.One can select outside framework oil seal oil sealing 10.

Go out the circular groove corresponding as oil storage tank 13 in turning on the valve shaft 7 with the fatten hole site on the valve body 3.

Valve reequiped put into operation before, grease add is refueled in the pipeline 9, to keep the good lubrication situation at sealing position, reduce to seal the corrosion at position, impurity such as isolated dust enter sealing position locking valve shaft 7.

On oiling pipeline 9, insert a switch valve 8, can realize that the valve on-line operation refuels, and does not influence production.

Claims

1. valve, comprise valve body (3), valve shaft (7) and be arranged on valve plate (2) on the valve shaft (7), be provided with valve seal (1) between valve body (3) and the valve plate (2), between valve shaft (7) and the valve body (3) is Spielpassung, be provided with the valve shaft sealing configuration between valve shaft (7) and the valve body (3), it is characterized in that: the two ends of valve shaft (7) and valve body (3) cooperation place are provided with oil sealing (10), offer the oiling pipeline (9) that leads to the valve shaft gap (14) between valve shaft sealing configuration and the valve seal (1) on the valve body (3), described oiling pipeline (9) is provided with switch valve (8).

2. valve as claimed in claim 1 is characterized in that: the oil storage tank (13) that is provided with annular corresponding to the valve shaft (7) of described oiling pipeline (9) port.

3. valve as claimed in claim 2 is characterized in that: the degree of depth≤5mm of described oil storage tank (13).

4. as any described valve of claim in the claim 1～3, it is characterized in that: the two ends of described valve shaft (7) respectively are provided with two oiling pipelines (9) that are mutually symmetrical and arrange.