CN202381610U

CN202381610U - Superimposed wave spring for petroleum drilling tool ball valve

Info

Publication number: CN202381610U
Application number: CN2011205373804U
Authority: CN
Inventors: 朱龙标; 黄年胜; 沈子建
Original assignee: SHANGHAI HEGONG DISC SPRING MANUFACTURE CO Ltd
Current assignee: SHANGHAI HEGONG DISC SPRING MANUFACTURE CO Ltd
Priority date: 2011-12-20
Filing date: 2011-12-20
Publication date: 2012-08-15
Anticipated expiration: 2021-12-20

Abstract

The utility model discloses a superimposed wave spring for a petroleum drilling tool ball valve. The superimposed wave spring is formed by spirally bending a bar-sheet body along the axial direction; when the body is spirally bent along the axial direction, the body is bent vertically along axially superimposed sinusoidal waves; the crest of a sinusoidal wave is contacted and overlapped with the crest of the last ring of sinusoidal wave, and the trough of the sinusoidal wave is contacted and overlapped with the trough of the last ring of sinusoidal wave; and the rings are fitted tightly. The wide sides of the adjacent rings of the body correspond in the axial direction, so that a contact area is increased, the stress is even and stable, and the bearing capacity is improved. The body is formed by rolling circular stainless steel wires; and each ring of the body is provided with at least three sinusoidal waves, so that the stress points are balanced and stable, the bearing capacity is improved, the stability of the spring is improved, and the service life of the spring is prolonged.

Description

The superimposed wavy spring that is used for the oil drilling tools ball valve

Technical field

The utility model relates to a kind of spring, relates in particular to the superimposed wavy spring that is used for the oil drilling tools ball valve.

Background technique

It mainly is that individual layer opening, individual layer are remained silent that wavy spring of the prior art uses; And the individual layer wavy spring bearing capacity is little in use, can not be used for the bigger occasion of load, some use producers can be with the use that is superimposed of several individual layers in order to increase the power value; Because the otherness of single product is big; The discontinuity that is stacked together is prone to dislocation in the using process, be easy to cause wavy spring wherein to produce early failue; Thereby cause whole wavy spring all unstable, cause ball valve to leak.

The model utility content

In view of this, the utility model technical problem to be solved is: provide the simultaneously every circle of a kind of helical buckling in axial direction sinusoidal wave overlapping, can increase the wavy spring bearing capacity, strengthen the wavy spring that is used for the oil drilling tools ball valve of spring stability.

In order to achieve the above object, the utility model adopts following technological scheme to realize:

A kind of superimposed wavy spring that is used for the oil drilling tools ball valve; Be through a long strip sheet body vertically helical buckling form; It is characterized in that: said body is in the sinusoidal wave bending up and down of helical buckling stack vertically simultaneously vertically; The crest of said sine wave contacts overlapping with the crest of a last circle, the trough of said sine wave contacts overlapping with the trough of a last circle, and every circle all fits tightly.

The adjacent circle body of said body is corresponding at the relative broad side face of axial direction, makes surface of contact increase, and is stressed even, stable, improves bearing capacity.

Said body adopts rolling the forming of circle stainless steel steel wire.

Each circle body of said body has three sine waves at least, makes to increase bearing capacity by the force bearing point equalization stable.

Can know that by technique scheme the beneficial effect of the utility model is:

Compare existing technology; The utility model is used for the superimposed wavy spring of oil drilling tools ball valve, and the body through long strip sheet helical buckling vertically forms, and said body is at sinusoidal wave crooked up and down of helical buckling stack vertically simultaneously vertically; The crest of said sine wave contacts overlapping with the crest of a last circle; The trough of said sine wave contacts overlapping with the trough of a last circle, every circle all fits tightly and makes spring stress balanced, has increased spring capacity; Improve the stability of spring, strengthened the working life of spring.

Description of drawings

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

Fig. 2 is the local structure for amplifying schematic representation of the utility model.

Embodiment

In order to make those skilled in the art can further understand the characteristic and the technology contents of the utility model, see also following detailed description and accompanying drawing about the utility model.

See also a kind of superimposed wavy spring that is used for the oil drilling tools ball valve of Fig. 1 to Fig. 2; Be through a long strip sheet body 1 vertically helical buckling form; Said body 1 is in the sinusoidal wave bending up and down of helical buckling stack vertically simultaneously vertically; The crest 2 of said sine wave contacts overlapping with the crest 2 of a last circle, the trough 3 of said sine wave contacts overlapping with the trough 3 of a last circle, and every circle all fits tightly.The adjacent circle body of said body 1 is corresponding at the relative broad side face of axial direction, makes surface of contact increase, and is stressed even, stable, improves bearing capacity; Said body 1 adopts rolling the forming of circle stainless steel steel wire; Each circle body of said body 1 has three sine waves at least, makes to increase bearing capacity by the force bearing point equalization stable.

But the preferable possible embodiments that the above is merely the utility model is not the claim in order to limitation the utility model, so the equivalent structure that all utilization the utility model specifications and accompanying drawing content are done changes, all in like manner is included in the scope of the utility model.

Claims

1. the superimposed wavy spring that is used for the oil drilling tools ball valve; Be through a long strip sheet body vertically helical buckling form; It is characterized in that: said body is in the sinusoidal wave bending up and down of helical buckling stack vertically simultaneously vertically; The crest of said sine wave contacts overlapping with the crest of a last circle, the trough of said sine wave contacts overlapping with the trough of a last circle, and every circle all fits tightly.

2. the superimposed wavy spring that is used for the oil drilling tools ball valve as claimed in claim 1 is characterized in that: the adjacent circle body of said body is corresponding at the relative broad side face of axial direction.

3. the superimposed wavy spring that is used for the oil drilling tools ball valve as claimed in claim 1 is characterized in that: said body adopts rolling the forming of circle stainless steel steel wire.

4. the superimposed wavy spring that is used for the oil drilling tools ball valve as claimed in claim 1 is characterized in that: each circle body of said body has three sine waves at least.