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Direct-buried type maintenance-free sleeve compensator

A sleeve compensator, maintenance-free technology, applied in the direction of damage protection, pipeline protection, pipeline protection through heat insulation, etc., can solve the problems that direct-buried pipeline compensation cannot be used, and the price of direct-buried corrugated compensators is high, so as to achieve good physical and chemical properties Stable performance, convenient on-site installation, and reliable sealing effect

Active Publication Date: 2012-08-22
LUOYANG SUNRUI SPECIAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the pipeline adopts the direct buried design with compensation, the direct buried corrugated compensator is generally used for pipeline compensation, because the ordinary sleeve compensator needs regular maintenance and cannot be used for direct buried pipeline compensation, and the price of the directly buried corrugated compensator Relatively high

Method used

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  • Direct-buried type maintenance-free sleeve compensator
  • Direct-buried type maintenance-free sleeve compensator
  • Direct-buried type maintenance-free sleeve compensator

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Embodiment Construction

[0018] The present invention is further described in conjunction with accompanying drawing and embodiment:

[0019] Such as figure 1 as shown, figure 1 It is a schematic diagram of the structure of a one-way direct buried maintenance-free sleeve compensator, which adopts a triple seal structure, with two seal structures set between the outer sleeve 13 and the end pipe 1, and one seal structure set between the end ring and the end pipe of the outer casing 6 1 between the sealing guide sleeves 2; the first heavy seal is composed of a combined sealing ring 12, an intermediate gland 9, and a floating pressure ring 11; the surface of the end pipe is sprayed with a corrosion-resistant and friction-reducing coating to reduce the combined sealing ring, packing packing and the surface of the end pipe; when working, as the medium pressure in the pipeline rises, under the joint action of the intermediate gland 9 and the floating pressure ring 11, the two lips of the combined sealing rin...

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Abstract

The invention belongs to the technical field of sleeve compensators, and particularly relates to a direct-buried type maintenance-free sleeve compensator, which is suitable for urban heating direct-buried pipelines. The direct-buried type maintenance-free sleeve compensator adopts a triple sealing structure, a diploid combined sealing structure is arranged between an outer sleeve (13) and end pipes (1 and 15), and the other combined sealing structure is arranged between an end ring (5) connected with an outer sleeve (6) and a sealing guiding sleeve (2) on the end pipes (1 and 15); the first combined sealing structure comprises a combined sealing ring (12), a middle gland bush (9) and a floating pressure ring (11); the diploid sealing structure comprises a gland (10), a gland bush (8) and a hold-down bolt (7) with a combined disc spring; the diploid combined sealing structure and the first sealing structure jointly take effects and effectively prevent a medium in the pipeline from leaking; and the triple sealing structure comprises a sealing guiding sleeve (2), an outer gland bush (3), a gland (4) and a protector hood end ring assembly (5). The invention improves the operation reliability of a pipe network and further decreases the engineering cost.

Description

technical field [0001] The invention belongs to the technical field of sleeve compensators, and mainly relates to a direct-buried maintenance-free sleeve compensator, which is mainly suitable for urban heating direct-buried pipelines. Background technique [0002] Sleeve compensator is the most traditional pipeline compensator, because the cost of sleeve compensator is relatively low, so it has been popularized and applied in a certain range. Sleeve compensators are generally sealed with stuffing. One end tube is designed with a stuffing box, and the other side is a core tube. The stuffing is compacted in the stuffing box through the gland. During operation, the core tube slides in the stuffing box to realize compensation. The first-generation heavy-tube compensator with packing as the sealing material leaks due to the wear of the sealing layer during use, which has the fatal disadvantage of having to stop using and replace the packing, which adds a lot of workload to the m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L27/12F16L59/18F16L58/02
Inventor 张爱琴张国华张莉张道伟
Owner LUOYANG SUNRUI SPECIAL EQUIP
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