Metal expansion joint protected by rubber leather sheath

Abstract

The utility model relates to a metal expansion joint structure protected by a rubber leather sheath, which consists of the rubber leather sheath and a metal expansion joint corrugated pipe, and the rubber leather sheath is fixed on the surface of the metal expansion joint corrugated pipe through adhesive coating or binding. And the rubber leather sheath is bound and fixed on the surface of the metal expansion joint corrugated pipe through an iron wire or a sealing ring. The rubber leather sheath can convert mechanical vibration energy into heat energy by utilizing internal friction and energy conversion, and the vibration energy is reduced in a heat dissipation manner, so that the vibration and noise of a pipeline system are reduced, the fatigue damage of the pipeline system is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to a metal expansion joint used for vibration reduction and impact resistance, in particular to a metal expansion joint protected by a rubber sheath. Background Art

[0002] Metal expansion joint, also known as metal bellows compensator or metal expansion joint, is a flexible structural device specially designed to absorb and compensate for the axial, lateral or angular displacement of pipelines or container shells caused by temperature changes and mechanical vibrations.

[0003] The advantages and disadvantages of metal expansion joints are as follows:

[0004] advantage:

[0005] 1) Traditional metal expansion joints use a bellows structure, which has greater axial, lateral and angular compensation capabilities;

[0006] 2) The structure of metal expansion joints is relatively simple, easy to install and maintain, and convenient for standardized design and production, thus reducing engineering costs;

[0007] 3) Metal expansion joints are usually made of high-strength alloy materials and can withstand higher working pressures and temperatures.

[0008] shortcoming:

[0009] 1) Traditional metal expansion joints have a certain vibration reduction effect, but compared with non-metallic compensators such as rubber expansion joints, their vibration transmission effect is poor;

[0010] 2) Compared with rubber expansion joints, metal expansion joints require more space to absorb the same displacement.

[0011] To meet the pipeline's high-temperature and high-pressure resistance requirements, as well as the compensation requirements and vibration reduction performance, metal expansion joints must have both high strength and low stiffness. It is necessary to design a metal expansion joint protected by a rubber sheath. Summary of the Invention

[0012] In order to make the metal expansion joint have good vibration reduction performance and find a balance between the vibration and shock resistance requirements of the pipeline system, the utility model provides a metal expansion joint protected by a rubber sheath.

[0013] To achieve the above purpose, the technical solution adopted by the utility model is: a metal expansion joint structure protected by a rubber sheath, which consists of a rubber sheath and a metal expansion joint bellows, and the rubber sheath is fixed to the surface of the metal expansion joint bellows by adhesive coating or binding.

[0014] Furthermore, the rubber sheath is fixed to the surface of the metal expansion joint bellows by binding with iron wire.

[0015] Furthermore, the rubber sleeve is fixed to the surface of the metal expansion joint bellows by using a sealing ring.

[0016] The present invention has the following beneficial effects:

[0017] 1. The rubber sleeve can utilize its internal friction and energy conversion to convert mechanical vibration energy into heat energy, and reduce vibration energy by heat dissipation, thereby reducing the vibration and noise of the pipeline system, reducing fatigue damage of the pipeline system, and thus extending the service life.

[0018] 2. The metal expansion joint protected by rubber sleeve has a relatively simple structure, is easy to install and maintain, and is convenient for standardized design and production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front of the metal expansion joint tied with the rubber sleeve;

[0020] Figure 2 This is a schematic diagram of a metal expansion joint tied with a rubber sheath;

[0021] In the figure: 1 is a rubber sheath, 2 is a metal expansion joint bellows, and 3 is a wire or sealing ring used for binding. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] like Figure 1 , shown in Figure 2, the utility model is a metal expansion joint structure protected by a rubber sheath, which is composed of a rubber sheath 1 and a metal expansion joint bellows 2. The rubber sheath 1 is fixed to the surface of the metal expansion joint bellows 2 by adhesive coating or binding. The rubber sheath 1 can utilize its internal friction and energy conversion to convert mechanical vibration energy into heat energy, and reduce vibration energy by heat dissipation, thereby reducing the vibration and noise of the pipeline system, reducing fatigue damage to the pipeline system, and thus extending the service life;

[0024] like Figure 2 As shown, the rubber sheath 1 is fixed to the surface of the metal expansion joint bellows 2 by tying wire or sealing ring 3. The metal expansion joint protected by the rubber sheath has a relatively simple structure, is easy to install and maintain, and is convenient for standardized design and production.

Claims

1. A metal expansion joint protected by a rubber sheath, characterized in that: It consists of a rubber sheath and a metal expansion joint bellows. The rubber sheath is fixed to the surface of the metal expansion joint bellows by adhesive coating or binding.

2. The metal expansion joint protected by a rubber sheath according to claim 1, characterized in that: The rubber sheath is fixed to the surface of the metal expansion joint bellows by wire binding.

3. The metal expansion joint protected by a rubber sheath according to claim 1, characterized in that: The rubber sleeve is fixed to the surface of the metal expansion joint bellows by means of a sealing ring.

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