CN202392309U - Special rubber corrugated pipe for ship diesel engine - Google Patents

Abstract

The utility model provides a special rubber corrugated pipe for a ship diesel engine, belongs to a rubber product, and particularly relates to a special oxygen-transporting corrugated pipe for a large-size ship diesel engine. The special rubber corrugated pipe is glued by a corrugated pipe body and an outer sheath, wherein the corrugated pipe body consists of an inner glue layer, an enhancing layer, an armored steel wire, an outer coating layer and an end-head gluing section; and the outer sheath is a pure rubber mold casting die with the end head gluing section. The enhancing layer is a double-layer polyester cloth; and the armored steel wire is a copper-plated steel wire with phi 3.2mm. The special rubber corrugated pipe is reasonable in structure design, light and thin in wall, powerful in force, capable of realizing large-area gluing with the outer sheath, good in whole physicochemical properties such as aging resistance, oil resistance, dampness and hotness resistance, salt mist resistance, mould resistance and the like, and clean and tidy in appearance, so that the whole service life meets the requirement of the overhaul period of the diesel engine.

Description

Special rubber bellows for marine diesel engine

technical field

The utility model belongs to rubber products, in particular to a special oxygen delivery bellows for diesel engines of large ships. the

Background technique

With the expansion of the application range, the large-scale marine series diesel engines manufactured by our country with German technology and the world's advanced level continue to improve their performance requirements, and the supporting oxygen bellows are also developing in the direction of large diameter and long length. , and its installed service life is also required to match the overhaul period of the diesel engine. As a vulnerable accessory of the diesel engine, the rubber bellows must have physical and chemical properties such as aging resistance, oil resistance, humidity resistance, salt spray resistance, and mold resistance due to the limitation of the working environment and medium. It also requires a certain mechanical strength to avoid leakage. , collapse, vibration tearing and other damage phenomena. For a long time, this type of bellows has been provided by German engine manufacturers. The procurement process is complicated, the production and delivery cycle is long, the import price is expensive, and the imported bellows are the company's finalized products. Its structure is similar to that of my country's improved model. The matching of the diesel engine is not ideal, for example, the end of the corrugated pipe body is not designed with a flat bonding section, but is directly bonded to the outer sheath with an adhesive for point and line bonding. Not only the appearance is poor, but also due to hot and humid oil erosion, machine vibration and other factors, the glue will leak or even fall off during use, which reduces the service life of the product and affects the normal operation of the engine. the

In view of the above deficiencies, it is imperative to develop special rubber bellows suitable for my country's improved marine diesel engines. the

Contents of the invention

The purpose of this utility model is to develop a special rubber bellows according to the specific structure and use characteristics of the domestic high-power, high-voltage multiplier diesel engine. the

In order to achieve the above purpose, the technical solution of this utility model is to provide a special rubber bellows for marine diesel engines, which is composed of a bellows body and an outer sheath bonded, wherein the bellows body is composed of an inner rubber layer, a reinforcement layer , armored steel wire, outer cladding and end bonding section; the outer sheath is a pure rubber molded part with end bonding section. The inner rubber layer is composed of neoprene and nitrile rubber mixed with quantitative antifungal agent and corresponding compounding agent; the reinforcement layer is double-layer polyester cloth; the armored steel wire is copper-plated steel wire of φ3.2mm. the

Compared with the known technology, the utility model has reasonable structural design, light and thin tube wall, higher strength, and realizes large-area bonding with the outer sheath, so the bonding is firm, and the whole is resistant to aging, oil, heat and humidity, and Salt spray, anti-mold and other physical and chemical properties are good, the appearance is neat, the overall life meets the requirements of the diesel engine overhaul cycle, the production cycle is short, the supply is timely, and it can save a lot of foreign exchange. the

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model. Accompanying drawing 2 is the partially enlarged anatomical diagram of A part of the present utility model. the

In the figure 1—corrugated pipe body 2—outer sheath 3—end bonding section 4—armoured steel wire 5—reinforcing layer 6—inner rubber layer 7—clamp groove 8—outer cladding. the

Detailed ways

Structure and manufacture method of the present utility model are described in detail below in conjunction with accompanying drawing:

Cover the inner rubber layer (6) on the metal core rod, wrap it with a dry wrapping cloth for 10-15 minutes, remove the dry wrapping cloth - wrap two layers of glue-coated polyester cloth, the wrapping angle is 45°, The winding direction of the two layers is opposite, and the setting of the reinforcing layer (5) is completed—the copper-plated steel wire of φ3.2mm is armored outside the reinforcing layer (5), and the pitch is controlled to be 30-35mm, and the bonding section of the end is reserved (3), cut the steel wire and fix the broken end of the steel wire with a narrow strip of raw rubber cloth, paint the adhesive Caplock on the steel wire, and after drying, coat the armored steel wire (4) with a raw rubber strip with a width of 25mm—— Then wrap the outer layer of the raw rubber strip with a width of 70-80mm and use a rubberized polyester cloth strip as the outer covering layer (8)—after setting the shape for 20 minutes, wrap the water-wrapped cloth for vulcanization. After vulcanization, the core is removed to complete the production of the bellows body (1). In addition, the production of the outer sheath (2) is completed by using the same rubber compound through mold vulcanization. Then apply cold glue on the outer surface of the end bonding section (3) of the bellows body (1) and the inner surface of the bonding section of the outer sheath (2). After the glue solvent evaporates, bond the two , Completed the utility model manufacture. When in use, put the outer sheath (2) on the air inlet and outlet tube of the diesel engine, and lock it on the clamp groove (7) with a clamp.

Claims (1)

1. naval vessel DENG special (purpose) rubber bellows, it is by bellows body and oversheath is bonding forms, and it is characterized in that bellows body is to be made up of for bonding section inner glue layer, enhancement layer, armouring wire, outer covering layer and termination; Oversheath is the pure rubber moulding casting die with bonding section of termination.

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