& does relevant recommendations: 【 flexible rubber joint, soft rubber joints, rubber joint 】 is gongyi city full state pipeline equipment co., LTD. The main business of our company has been made as a special equipment manufacturing license and ISO quality management system certification of qualified companies, the company management concept: the factory in order to "customer needs is our goal" principle, wholeheartedly for the customers with excellent products, reasonable prices, fast delivery cycle, professional technical support and perfect after-sales service. In the future, full state is full of confidence and hope, was determined in a more high quality brand and good service, sincere cooperation with customers at home and abroad, to do the northern area of the thermal compensation smoke duct equipment industry's first brand.


ZTWB type dc medium thrust principle of expansion
The thrust expansion, is the use of PASCAL's theory of fluid mechanics, and in the design of the structure is clever use of a circular dome, the steam room, respectively, with two annular pressure surface, a steam room is fixed end face, the other one is confined in the steam room of telescopic tube shoulder ring surface, along with the extension tube are mobile. Compression of the movable ring surface area and telescopic pipe is equal to the cross-sectional area, expansion pipe work, under the action of medium pressure, annular pressure and telescopic tube on the surface of the pressure of the cross-sectional area is equal, but in the opposite direction, so both pressure offset each other. So the expansion pipe is only considered in design support compression packing friction, ? of fixed bracket

ZTWB type dc medium thrust expansion pipe installation requirements
(1) with the expansion pipe ends when the welding section thickness of 6 mm or higher, groove processing, must be conducted according to the requirement of hydraulic leak test after welding.
(2) the sliding bracket and fixed bracket according to the design and installation, use ZTWB type, besides don't calculate work medium pressure thrust, the rest is the same. To ensure that the pipeline without lateral displacement, and along the axial expansion, expansion pipe ends shall generally be sliding bracket, installation guide on the pipe bend, you must install the fixed bracket.
(3) the expansion of thermal protection structure with pipeline route, but the extension tube telescopic part, do not produce binding.
(4) the expansion pipe under various environment temperature, can be installed according to the maximum length LMax to, do not need to be stretched or compressed.

ZTWB type dc medium thrust expansion of technical parameters