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Double-clip type high-temperature high-pressure rotation compensator

A rotary compensator, high temperature and high pressure technology, used in pipeline expansion compensation devices, pipes/pipe joints/fittings, adjustable connections, etc., can solve the problems of pipeline thermal loss, small displacement compensation, and limited compensation capacity. , to achieve the effect of small medium flow resistance, small friction of the rotor and reduced coaxiality

Inactive Publication Date: 2013-04-17
江苏百新波纹管有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sleeve expansion joint is mainly composed of the shell, the sliding core tube and the sealing packing. Due to the sleeve type expansion joint, the displacement of its compensation pipe is compensated by the expansion and contraction of the sliding core tube. The compensation capacity is limited by the structure, and the sliding core tube and the packing The seal between them cannot be kept in good condition for a long time, and it is easy to leak after long-term use, which will cause heat loss in the pipeline and affect economic benefits and environmental protection. Therefore, the compensation ability and sealing of the sleeve expansion joint have become a key technical issue.
At present, the sleeve-type expansion joints used in the thermal pipe network can compensate the thermal expansion and contraction of the pipeline by the expansion and contraction of the sliding core tube of the expansion joint. Due to the structural constraints, its compensation ability is limited. The compensation capacity of the joint is only within 300mm, and its seal usually uses graphite packing as the sealing packing. The sealing performance can only be guaranteed by increasing the pre-tightening force. Secondly, due to structural reasons, the sleeve-type compensator cannot withstand high temperature and high pressure, which restricts heat. Application and Development of Pipeline Network
Especially for the sleeve type compensator after a heating period, the sliding core tube will compensate and reset, and the sealing packing will be loosened to cause leakage. Therefore, packing must be added for maintenance. The work is tiring and dangerous, but the sealing performance is not ideal after all. As a result, the thermal pipe network does not operate well, or even shuts down for maintenance, causing great losses
[0003] Chinese patent CN101694259A disclosed a "maintenance-free two-way rotary compensator" on April 14, 2010. The structure of the patent application is relatively complicated, and its main function is still to absorb the axial thrust of the pipelines on both sides and compensate the axial displacement. The displacement compensation The amount is relatively small, and stereo compensation cannot be achieved

Method used

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  • Double-clip type high-temperature high-pressure rotation compensator

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Effect test

Embodiment 1

[0024] Such as figure 1 As shown, the clip-on high temperature and high pressure rotary compensator includes a main body 11, a casing 8, a left end cover 1, a right end cover 9 and a sealing material, a sealing material is provided between the main body 11 and the casing 8, and the two ends of the sealing material are provided A left end cover 1 and a right end cover 9 are respectively provided. The outer surface of the main body 11 is provided with a convex spherical structure, and the spherical structure surrounds the main body to form an annular rotating spherical cylinder 4, and the rotating spherical cylinder 4 and the main body 11 are welded to form an integral structure. The sealing material is arranged between the rotating spherical cylinder 4 and the shell 8 of the main body, and a tie rod 7 is connected between the left end cover 1 and the right end cover 9 . The left end cap 1 is provided with a connecting pipe and is an integral structure with the connecting pipe,...

Embodiment 2

[0027] The wafer type high temperature and high pressure rotary compensator system includes two above mentioned wafer type high temperature and high pressure rotary compensators and a connecting pipe, the connecting pipe is arranged between two adjacent wafer type high temperature and high pressure rotary compensators, and the connecting pipe and The axes of the wafer type high temperature and high pressure rotary compensator are not on the same straight line. In this embodiment, two clip-on high temperature and high pressure rotary compensators and connecting pipes form a V-shaped or U-shaped structure.

Embodiment 3

[0029] The wafer type high temperature and high pressure rotary compensator system is composed of three wafer type high temperature and high pressure rotary compensators connected in sequence, and the three wafer type high temperature and high pressure rotary compensators form a V-shaped structure.

[0030] The metal support seal ring of the clip-on high-temperature and high-pressure rotary compensator is made of copper or high-strength composite material, and is made of an equal-curvature spherical seal pair with the spherical surface of the rotating spherical cylinder. The outer surface of the rotating spherical cylinder is in contact with the sealing packing and the metal supporting sealing ring. There is a chrome-plated polishing layer on the part, and the surface roughness reaches , the inner surface of the left and right end covers and the outer surface of the main body of the rotating cylinder are provided with two centering rollers, which form a double fulcrum support,...

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Abstract

The invention relates to a double-clip type high-temperature high-pressure rotation compensator which comprises a main body, an outer casing, an end cover and a sealing material. A rotation ball cylinder is arranged on an outer surface of the main body, the sealing material is arranged between the rotation ball cylinder and the outer casing, a left end cover and a right end cover are respectively arranged at two ends of the sealing material, and a draw bar is connected between the left end cover and the right end cover. The sealing material comprises two metal support sealing rings which are arranged at intervals, sealing padding is arranged between the two metal support sealing rings, a filling cup is arranged on the outer casing corresponding to the sealing padding, and a metal sealing sheet is arranged between the left end cover and the sealing cup and between the right end cover and the sealing cup. The metal support sealing rings on two sides of the rotation ball cylinder can effectively guarantee positions and pulling resistance of the ball cylinder, the double-clip type high-temperature high-pressure rotation compensator is reliable in sealing, a double-support structure can bear big driving torque, frictional resistance is small, service life is long, and maintenance is not needed, and the double-clip type high-temperature high-pressure rotation compensator is applied to high-temperature high-pressure heating power tubes, solves the problem that compensating components of the high-temperature high-pressure heating power tubes are difficult to lay and can guarantee long-term efficient operation of a heat-supply pipe network.

Description

technical field [0001] The invention relates to a pipeline compensator, in particular to a clamp-type high-temperature and high-pressure rotary compensator with large displacement compensation and good sealing performance for a heat pipe network and a compensation system thereof. Background technique [0002] When the thermal pipe network of urban heating network, electric power, metallurgy, petrochemical and other industries transports steam, hot water or high-temperature water medium, due to the thermal expansion and contraction of the pipeline due to the influence of the medium temperature, the sleeve type expansion joint is generally used to compensate the displacement. The sleeve expansion joint is mainly composed of the shell, the sliding core tube and the sealing packing. Due to the sleeve type expansion joint, the displacement of its compensation pipe is compensated by the expansion and contraction of the sliding core tube. The compensation capacity is limited by the ...

Claims

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Application Information

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IPC IPC(8): F16L51/00F16L27/08
Inventor 曹宝璋
Owner 江苏百新波纹管有限公司