CN205063916U

CN205063916U - Novel structure types of medicine cover

Info

Publication number: CN205063916U
Application number: CN201520859844.1U
Authority: CN
Inventors: 姜伟华; 潘永新; 姜彦东; 汤占军
Original assignee: PERFORATING BULLET FACTORY OF DAQING PETROLEUM ADMINISTRATION BUREAU; Daqing Petroleum Administration Bureau; China National Petroleum Corp
Current assignee: PERFORATING BULLET FACTORY OF DAQING PETROLEUM ADMINISTRATION BUREAU; Daqing Petroleum Administration Bureau; China National Petroleum Corp
Priority date: 2015-10-30
Filing date: 2015-10-30
Publication date: 2016-03-02
Anticipated expiration: 2025-10-30

Abstract

The utility model relates to a novel structure types of medicine cover. Main solve current perforating bullet types of medicine cover easily push up when the powder charge split, the effluxvelocity is slow, wear dark little problem. Its characterized in that: the surface cone angle (D) of body (1) is 40 - 60, and body (1) internal surface is divided into the different conical surface of three tapering from top to bottom, and wherein first cone angle (A) is 40 - 60, and second cone angle (B) is 40 - 50, and third cone angle (C) 30 - 45, the 2 -5 that the top thickness (H) of body (1) is first cone wall thickness (B) doubly. This novel structure types of medicine cover's top thickness is greater than skirt section thickness, and difficult top is split when the powder charge, and the effluxvelocity is fast, can reach the better dark effect of wearing.

Description

A kind of new structure cavity liner

Technical field

The utility model relates to a kind of oilfield, is a kind of new structure cavity liner on perforating bullet specifically.

Background technology

Cavity liner is the critical component of perforating bullet, and its performance directly affects the performance of perforating bullet.The structure of current cavity liner adopts top thin substantially, the structure that skirt section is thick, ensures the punching quality of deep penetrating charge, but the cavity liner of this structure easily pushes up when powder charge and splits, and effluxvelocity is slow, wears deeply little.

Summary of the invention

In order to overcome existing ammunition shaped cover of perforation easily push up when powder charge split, effluxvelocity is slow, wear deeply little deficiency, the utility model provides a kind of new structure cavity liner, the top thickness of this new structure cavity liner is greater than skirt section thickness, not easily push up when powder charge and split, effluxvelocity is fast, can reach and better wear dark effect.

The technical solution of the utility model is: a kind of new structure cavity liner, comprise body, the external surface cone angle of described body is 40 °-60 °, the conical surface that body internal surface is divided into three taperings different from top to bottom, wherein the angle of the first cone angle is 40 °-60 °, the angle of the second cone angle is 40 °-50 °, and the angle of the 3rd cone angle is 30 °-45 °, and the top thickness of described body is 2-5 times of the first cone wall thickness.

The utility model has following beneficial effect: owing to taking such scheme, this cavity liner interior surface is made up of the different conical surfaces, and top thickness is 2-5 times of cone skirt section thickness, such one side can be avoided being split on cavity liner top during powder charge, also can improve head effluxvelocity on the other hand, reach and better wear dark effect.

Accompanying drawing explanation

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

Fig. 2 is that the utility model is applied to the jet curve formed in perforating bullet, and wherein a is jet curve of the present utility model, and b is the jet curve of existing perforating bullet.

1-body in figure, A-first cone angle, B-second cone angle, C-the 3rd cone angle, D external surface cone angle, H-top thickness, L-first cone angle wall thickness.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is described in further detail:

As shown in Figure 1, a kind of new structure cavity liner, comprise body 1, described body 1 external surface is the conical surface, and external surface conical surface cone angle D is 40 °-60 °, the conical surface that body 1 inner surface is divided into three taperings different from top to bottom, wherein the first cone angle A is 40 °-60 °, second cone angle B is 40 °-50 °, 3rd cone angle C30 °-45 °, the top thickness H of described body 1 is 2-5 times of the first cone wall thickness L, add top thickness, the ratio of top thickness H cone and the first cone angle wall thickness L can be chosen according to the needs of effluxvelocity, the higher effluxvelocity of ratio is larger.Such one side can be avoided being split on cavity liner top during powder charge, also can improve head effluxvelocity on the other hand, reach and better wear dark effect.

As seen from Figure 2, the perforating bullet effluxvelocity applying this cavity liner is higher, longer than the jet of traditional perforating bullet.The perforating bullet of the large end opening 40mm adopting this cavity liner to make and 95 type perforating guns are supporting is assembled into 95 type perforators, carries out concrete target and wears dark test, on average wear dark 1106mm, wears deeply improve 10% than original similar 95 type perforators; Carry out ground and wear the test of steel target, dark 190mm on average worn by steel target, wears dark raising 10%.

Claims

1. a new structure cavity liner, comprise body (1), it is characterized in that: the external surface cone angle (D) of described body (1) is 40 °-60 °, the conical surface that body (1) inner surface is divided into three taperings different from top to bottom, wherein the first cone angle (A) is 40 °-60 °, second cone angle (B) is 40 °-50 °, the 3rd cone angle (C) 30 °-45 °, and the top thickness (H) of described body (1) is 2-5 times of the first cone wall thickness.