美标橡胶接头 150LB橡胶避震喉 橡胶接头 挠性接头 软连接 橡胶接头产品安全使用方法

Rubber joints can be referred to as: flexible rubber joints, rubber soft connection, flexible joint, flexible rubber joints, rubber expansion joint, shock proof box, shock absorber, pipe a high elasticity, high air tightness, medium resistance and weather resistance of connectors. Rubber joint is composed of an inner and outer layer of glue, ply and steel wire ring tubular rubber parts, after high temperature, high pressure vulcanization forming, and the metal flange or parallel connection sleeve assembly. This product uses the high elasticity of rubber, high air resistance, medium resistance, weather resistance and radiation resistance and other advantages, can reduce the vibration and noise of pipeline, and can play the role of compensation for thermal expansion and contraction caused by temperature change. The products are widely used in: chemical industry, construction, water supply, drainage, oil, light and heavy industry, frozen, sanitary, plumbing, fire, electricity and other infrastructure projects.
The classification and labelling
1 according to the using performance is divided into general, special, heat three categories,
General: suitable for conveying the temperature for 15 ℃ ~80 ℃ water, concentration below 10% of the acid or base solution.
Construction type: suitable for special requirements, such as the oil resistance, ozone resistance, wear resistance, Naisai or chemical corrosion.
Heat type: suitable for conveying the temperature higher than 80 ℃ water
The 2 form of the structure is divided into single ball, double ball, three balls, elbow ball, each form can be divided into concentric diameter, concentric reducer, eccentric different diameter three.
3 according to the connection form products and pipeline can be divided into connection, threaded connections and clamp connection three flange.
4 according to the working pressure can be divided into 0.25MPa
5 product marking:
Products should be marked in the following order: product name, type code, code, code structure performance, work pressure, nominal diameter.
The specified products and structure of the code are as follows: flexible rubber joint RFJ, a single sphere D, dual ball S, elbow W, Yt concentric reducer, eccentric different diameter Yp, fan coil connector F.
Mark example: RFJD-1.6 * 200,. The nominal diameter of a single sphere 200mm flexible rubber joint, working pressure 1.6Mpa.
Requirement
1 product structure: rubber connector commonly consists of the inner layer, the fabric reinforced layer, middle layer, outer layer, end reinforcing metal ring or ring, metal flange or parallel movable joint. The structure form of figure
Rubber joint size chart
2 size
3 working pressure: 5 times the working pressure test pressure of rubber joints, 3 times of the working pressure of blasting pressure.
4 high vacuum degree: nominal diameter below 300mm, rubber joint working pressure of more than 1.6Mpa, high

vacuum degree is not less than 100Kpa, and other s
pecifications of the rubber and the forehead of the vacuum from the supply and demand sides of the agreement.
5 displacement performance:
6 rubber joint physical and mechanical properties of rubber.
7 rubber joints for safety evaluation of drinking water systems: rubber connector for flat safety drinking water system
Rubber connector used for drinking water system, the water quality products should be consistent with the relevant provisions of GB/T5749 "drinking water health standards" and GB/T17219 "safety evaluation of drinking water distribution equipment and protective materials and requirements of the standard".
The appearance quality of 8 rubber joint rubber parts requirements
9 on the metal flange peace shaped movable joints: metal flanges shall conform to the requirements of GB/T9119, flat movable joints shall be in accordance with the requirements of GB/T3289.37.
10 when the rubber joint surface using bead reinforcement requirements: when the rubber joint surface using bead reinforcement requirements, steel wire ring should be round and should be located in the same year the same plane.
The experimental method
1 appearance quality product size: the appearance quality of the visual method, use vernier caliper to measure the product specifications or.
2 the physical properties of rubber test
1). The tensile strength, elongation at break were determined according to the provisions of GB/T528.
2). The determination of rubber hardness according to the provisions of GB/T531.
3). Brittleness temperature test compound were in accordance with the requirements in GB/T1682.
4). The determination of rubber and fabric bonding strength are carried out in accordance with the provisions of GB/T532.
5). Tests were performed according to the provisions of GB/T3512 hot air aging of rubber.
6). Acid proof, alkali test compound were in accordance with the requirements in GB/T1690.
3 the product of hydraulic pressure and vacuum test
1) hydraulic test for reference in GB/T5563 6.3 provisions.
2) vacuum test according to 2-5 chapter GB/T5567 of the relevant provisions.
4) displacement performance test: displacement performance test was carried out according to appendix A.
5) the shape and position of reinforcing steel wire ring rubber joint end face: rubber connector end face shape and location of reinforced steel wire ring by X ray testing.
6) on water quality through product water according to the provisions of GB/T5749 and GB/T17219.
Inspection rules
1 product inspection classification
Products have to go through the factory inspection before the factory quality inspection departments qualified. Product delivery inspection and test points to test two.
The 2 type of test
Any of the following circumstances, should carry out type testing.
A. new products or old products factory production trial type approval.

B. is the post production, such as product structure, materials, processes have a greater change, may affect product performa
nce.
C. during normal production, once every six months.
D. products long after, the recovery of production.
E. factory inspection results and the test results are different when.
F. national quality supervision mechanism is presented for type test requirements.
3 product sampling rule
1). The surface morphology and position of the reinforcing steel wire ring
Check once a month, each sampling optionally a specification, a type of two products, by means of X - ray fluoroscopy. The test results have an unqualified should the product in the selected two pieces of retrial. If there is still an unqualified is the kind of the product should be