A composite sealing ring for oil drilling and its processing technology
A composite sealing ring and sealing ring technology, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of harsh working environment and short service life, and achieve high service life, improved service life and large elastic modulus Effect
Active Publication Date: 2011-12-07
CHENGDU SHENGBANG SEALS
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Ordinary sealing ring (homogeneous) structure cannot adapt to the functional requirements of different parts of the product, such as figure 2 As shown in the assembly relationship, the sealing ring 3 is set between the shaft 4 and the cone 5, and the working environment of the high-speed rotating cone 5 is harsh. The inner ring of the sealing ring 3 and the cone 5 need to have high wear resistance, while the outer The assembly of the ring needs to have good compression performance, but at present, if the above-mentioned single sealing ring meets the high wear resistance and high strength of the inner ring, it cannot meet the better compression performance required by the assembly of the outer ring, so the service life is longer. short, around 40 hours
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0033] Such as figure 1 Shown: a composite sealing ring for oil drilling. The sealing ring is composed of an inner ring 1 and an outer ring 2. The inner ring 1 is a wear-resistant layer and its size is 1 / 5 to 1 / 5 of the sectional diameter of the "O" ring. 2 / 5 range. The size of the inner ring 1 is 1 / 3 of the sectional diameter of the "O" ring.
[0034] Among them: the inner ring is made of materials with better elasticity and compression, such as nitrile rubber, and the outer ring is made of materials with better wear resistance, which can be made by adding carbon black or graphite to nitrile rubber.
[0035] The above sealing ring is made by the following process:
[0036] (1) According to the required size and weight of the inner and outer ring materials, use a glue cutter to cut the rubber material into strips that meet the requirements of length, width, thickness and weight;
[0037] (2) Inner ring preforming: the inner ring strip is molded on a vulcanizing machine wit...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a composite sealing ring for oil drilling. The sealing ring is composed of an inner ring (1) and an outer ring (2). The inner ring (1) is a wear-resistant layer and its size is an "O" ring In the range of 1 / 5 to 2 / 5 of the intercept diameter. Process according to the following steps, inner ring preforming, outer ring preforming, inner ring, outer ring bonding vulcanization, trimming, secondary vulcanization, grinding and trimming, inspection. The invention has a simple structure, and the sealing ring is made into an inner and outer two-layer structure through the layered design of the commonly used sealing ring, so that the inner ring has high strength, large elastic modulus, and high wear resistance, and the outer ring is suitable for assembly requirements. Compression performance, greatly improving the service life of the sealing ring. And through the design of the corresponding processing technology, the product has the characteristics of wear resistance, medium resistance and high service life.
Description
technical field [0001] The invention relates to the technical field of sealing element processing technology, in particular to a composite sealing ring for oil drilling and its processing technology. Background technique [0002] Sealing products for oil exploration drill bits are required to achieve corresponding reliability and service life under the conditions of "high temperature, high pressure, high corrosion, and high wear resistance" due to their deep underground depth of 3000m to 7000m and harsh working environment. [0003] Domestic companies that produce oil exploration drill bits now use a large number of sealing rings of homogeneous materials (hydrogenated nitrile rubber). Ordinary sealing ring (homogeneous) structure cannot adapt to the functional requirements of different parts of the product, such as figure 2 As shown in the assembly relationship, the sealing ring 3 is set between the shaft 4 and the cone 5, and the working environment of the high-speed rotat...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/20
Inventor 王冬明
Owner CHENGDU SHENGBANG SEALS