CN110762314A

CN110762314A - Feed back leg compensator with alarm device

Info

Publication number: CN110762314A
Application number: CN201810848924.5A
Authority: CN
Inventors: 丁浩原; 丁荣根; 曹卫军; 宋以刚
Original assignee: JIANGSU BEST BELLOWS Co Ltd
Current assignee: JIANGSU BEST BELLOWS Co Ltd
Priority date: 2018-07-28
Filing date: 2018-07-28
Publication date: 2020-02-07

Abstract

The invention relates to a feed back leg compensator provided with an alarm device, which comprises at least two sections of corrugated pipes which are mutually connected through a middle pipe, wherein connecting pipes are respectively arranged at two ends of each corrugated pipe; the outer surface of the compensator is provided with a connecting rod mechanism, and the fixing points of the connecting rod mechanism are uniformly distributed in the axis direction of the compensator. Compared with the prior art, the connecting rod mechanism is fixedly arranged on the outer surface of the compensator, so that the expansion amount of the corrugated pipe is uniform; the wear-resistant protective layer is arranged in the inner cavity of the compensator and the heat-insulating cotton is filled in the inner cavity of the compensator, so that the abrasion of the inner wall of the compensator is effectively reduced, and the high-temperature resistance is improved. The invention has the advantages of short installation position, large compensation amount, longer service life, lower cost and higher reliability, and the working temperature is 950-1050 ℃.

Description

Feed back leg compensator with alarm device

Technical Field

The invention relates to the technical field of pipeline compensators, in particular to a feed back leg compensator provided with an alarm device and used for a circulating fluidized bed unit of a power plant.

Background

At present, a return leg compensator provided with an alarm device of the existing circulating fluidized bed unit of a power plant is generally a common two-section corrugated pipe compensator. Because the working medium of the feed back leg compensator provided with the alarm device is flowing solid particles and needs to work for a long time in a high-temperature environment, the conventional corrugated pipe compensator usually generates uneven expansion amount, the inner wall of a corrugated pipe is abraded greatly after the corrugated pipe compensator is used for a period of time, the sealing is not tight easily, and even the compensator fails due to damage or leakage, so that the normal production of a power plant is influenced. The existing return leg compensator with the corrugated pipe provided with the alarm device has the advantages of short service life, high use cost and low production efficiency.

Disclosure of Invention

The invention aims to provide a feed back leg compensator which is uniform in expansion and contraction, wear-resistant, low in cost and long in service life and adopts a four-bar mechanism and is provided with an alarm device.

The purpose of the invention is realized by adopting the following technical scheme:

the feed back leg compensator provided with the alarm device comprises at least two sections of corrugated pipes which are mutually connected through a middle pipe, connecting pipes are respectively arranged at two ends of each corrugated pipe, end flanges are arranged on the end surfaces of the connecting pipes, an inner pipe is arranged in an inner cavity of the compensator, the inner pipe is connected and fixed with the end flanges, the connecting pipes are connected with the middle pipe through ear plates and pull rods, a protective layer is arranged in the inner cavity of the inner pipe, the protective layer is connected and fixed with the inner pipe through a grab nail fixed on the inner wall of the inner pipe, and heat insulation filler is arranged between the inner pipe and the inner surface of the compensator; the outer surface of the compensator is provided with a connecting rod mechanism, and fixing points of the connecting rod mechanism are uniformly distributed in the axis direction of the compensator; and an alarm device is arranged on the outer side of the pipe wall where the heat-preservation filler is arranged.

As a preferred technical scheme of the invention, the compensator is composed of two sections of a corrugated pipe I and a corrugated pipe II which are connected through a middle pipe, a four-bar mechanism is arranged on the outer surface of the compensator, two ends of the four-bar mechanism are respectively connected and fixed with the connecting pipe, and middle fixed points of the four-bar mechanism are respectively arranged on the outer surfaces of the corrugated pipe I, the middle pipe and the corrugated pipe II.

As a preferable technical scheme of the invention, a heat-insulating filler is arranged between the protective layer of the inner pipe and the inner surface of the inner pipe.

As a preferred technical scheme of the invention, an inner tube I and an inner tube II are respectively arranged in an inner cavity of the compensator, the diameter of the inner tube I is larger than that of the inner tube II, the inner tube I extends into a cavity formed by the inner tube II and the inner surface of the compensator, and heat insulation cotton is filled between the inner tube I and the inner tube II and the inner surface of the compensator.

As a preferred technical scheme, an inner tube III is arranged in an inner cavity of the inner tube II, the inner tube III is connected and fixed with the inner wall of the inner tube II through an inner ring plate II, a protective layer is arranged in the inner cavity of the inner tube III, and the protective layer is connected and fixed with the inner tube III through a grabbing nail fixed on the inner wall of the inner tube III.

As a preferred technical scheme, a flow guide pipe is arranged in an inner cavity of the inner pipe I and is connected with the inner wall of the inner pipe I through an inner ring plate I.

As a preferred technical scheme, two compression rings which are arranged at intervals are welded on the inner surface of the inner pipe I, and the inner ring plate I is embedded between the two compression rings.

As a preferred technical scheme of the invention, the flow guide pipe extends into a cavity formed by the inner pipe III and the inner pipe II, and heat insulation cotton is filled between the flow guide pipe and the inner surface of the inner pipe II.

As a preferred technical scheme of the invention, the outer surfaces of the connecting pipe and the middle pipe on two sides of the corrugated pipe are respectively welded with the lug plates, and the two lug plates are connected through the nut and the pull rod.

The invention has the beneficial effects that: compared with the prior art, the four-bar mechanism is fixedly arranged on the outer surface of the compensator, so that the expansion amount of the corrugated pipe is uniform; meanwhile, the inner cavity of the compensator is provided with a wear-resistant protective layer and is filled with heat insulation cotton, so that the wear of the inner wall of the compensator is effectively reduced, the high-temperature resistance is improved, and the service life is prolonged. The invention has the advantages of short installation position, large axial and radial compensation, working temperature of 950-1050 ℃, longer service life, lower cost and higher reliability.

Drawings

The invention will be further described with reference to the following detailed description of embodiments and with reference to the accompanying drawings in which:

fig. 1 is a schematic structural view of the present invention.

In the figure: 1. end flange I, 2, take over, 3, inner tube I, 4, bellows I, 5, the heat preservation cotton, 6, intermediate pipe, 7, pull rod, 8, otic placode, 9, clamping ring, 10, interior ring plate I, 11, honeycomb duct, 12, interior ring plate II, 13, inner tube II, 14, inner tube III, 15, four-bar linkage, 16, grab nail, 17, protective layer, 18, bellows II, 19, end flange II, 20, alarm device.

Detailed Description

As shown in fig. 1, the feed back leg compensator provided with the alarm device comprises two sections of corrugated pipes I4 and II 18 which are connected with each other through a middle pipe 6, wherein two ends of the corrugated pipes I4 and II 18 are respectively provided with a connecting pipe 2, the end face of the connecting pipe 2 is provided with an end flange, the connecting pipe 2 is connected with the middle pipe 6 through an ear plate 8 and a pull rod 7, the outer surface of the compensator is provided with a four-bar mechanism 15, fixing points of the four-bar mechanism 15 are uniformly distributed in the axis direction of the compensator, two ends of the four-bar mechanism 15 are respectively connected and fixed with the connecting pipe 2, and middle fixing points of the four-bar mechanism 15 are respectively arranged on the outer surfaces of the corrugated pipes I4, the middle pipe 6 and the corrugated. A protective layer 17 is arranged in the inner cavity of the inner pipe, the protective layer 17 is connected and fixed with the inner pipe through a grabbing nail 16 fixed on the inner wall of the inner pipe, and a heat-insulating filler is arranged between the inner pipe and the inner surface of the compensator; and a heat-insulating filler is arranged between the protective layer 17 of the inner pipe and the inner surface of the inner pipe, and an alarm device 20 is arranged on the outer side of the pipe wall where the heat-insulating filler is positioned.

In this embodiment, the inner chamber of compensator is equipped with inner tube I3 and inner tube II 13 respectively, and inner tube I3 is connected with end flange I1 and is fixed, and inner tube II 13 is connected with end flange II 19 and is fixed, and the diameter of inner tube I3 is greater than the diameter of inner tube II 13, and inner tube I3 stretches into in the cavity that inner tube II 13 and compensator internal surface constitute, and it has heat preservation cotton 5 to fill between inner tube I3 and inner tube II 13 and the compensator internal surface.

The inner cavity of the inner tube II 13 is provided with an inner tube III 14, the inner tube III 14 is connected and fixed with the inner wall of the inner tube II 13 through an inner ring plate II 12, the inner cavity of the inner tube III 14 is provided with a protective layer 17, and the protective layer 17 is connected and fixed with the inner tube III 14 through a claw nail 16 fixed on the inner wall of the inner tube III 14.

In this embodiment, the inner cavity of the inner tube i 3 is provided with a flow guide tube 11, and the flow guide tube 11 is connected with the inner wall of the inner tube i 3 through an inner ring plate i 10. The interior skin weld of inner tube I3 has two clamping rings 9 that set up at an interval each other, interior ring plate I10 inlays and establishes between two clamping rings 9. The draft tube 11 extends into a cavity formed by the inner tube III 14 and the inner tube II 13, and heat insulation cotton 5 is filled between the draft tube 11 and the inner surface of the inner tube II 13. The outer surfaces of the connecting pipe 2 and the middle pipe 6 on two sides of the corrugated pipe are respectively welded with the lug plates 8, and the two lug plates 8 are connected with the pull rod 7 through nuts.

Claims

1. The utility model provides a set up alarm device's feed back leg compensator, includes two sections at least bellows through intermediate pipe interconnect, and the both ends of bellows are equipped with the takeover respectively, and the terminal surface of takeover is equipped with the end flange, the inner chamber of compensator is equipped with the inner tube, the inner tube with end flange connects and fixes, be connected characterized by through otic placode and pull rod between takeover and the intermediate pipe: the inner cavity of the inner pipe is provided with a protective layer, the protective layer is connected and fixed with the inner pipe through a grab nail fixed on the inner wall of the inner pipe, and a heat-insulating filler is arranged between the inner pipe and the inner surface of the compensator; the outer surface of the compensator is provided with a connecting rod mechanism, and fixing points of the connecting rod mechanism are uniformly distributed in the axis direction of the compensator; and an alarm device is arranged on the outer side of the pipe wall where the heat-preservation filler is arranged.

2. A return leg compensator provided with an alarm device as claimed in claim 1, wherein: the compensator is composed of two sections of corrugated pipes I and II which are connected through a middle pipe, a four-bar mechanism is arranged on the outer surface of the compensator, two ends of the four-bar mechanism are respectively connected and fixed with the connecting pipes, and middle fixing points of the four-bar mechanism are respectively arranged on the outer surfaces of the corrugated pipes I, the middle pipe and the corrugated pipes II.

3. A return leg compensator provided with an alarm device according to claim 1 or 2, characterized in that: and a heat-insulating filler is arranged between the protective layer of the inner pipe and the inner surface of the inner pipe.

4. A return leg compensator provided with an alarm device as claimed in claim 2, wherein: the inner chamber of compensator is equipped with inner tube I and inner tube II respectively, and the diameter of inner tube I is greater than the diameter of inner tube II, and inner tube I stretches into in the cavity that inner tube II and compensator internal surface constitute, and it has the heat preservation cotton to fill between inner tube I and inner tube II and the compensator internal surface.

5. A feed back leg compensator provided with an alarm device as claimed in claim 4, wherein: the inner cavity of inner tube II is equipped with inner tube III, and inner tube III is connected and is fixed with the inner wall of inner tube II through interior crown plate II, and the inner cavity of inner tube III is equipped with the protective layer, and the protective layer is connected and is fixed with inner tube III through fixing the grab nail at III inner walls of inner tube.

6. A feed back leg compensator provided with an alarm device as claimed in claim 4 or 5, wherein: the inner cavity of the inner tube I is provided with a flow guide tube, and the flow guide tube is connected with the inner wall of the inner tube I through an inner ring plate I.

7. A return leg compensator provided with an alarm device as claimed in claim 6, wherein: the internal surface welding of inner tube I has two clamping rings that set up at an interval each other, interior ring plate I inlays to be established between two clamping rings.

8. A return leg compensator provided with an alarm device as claimed in claim 6, wherein: the honeycomb duct stretches into a cavity formed by the inner tube III and the inner tube II, and heat insulation cotton is filled between the honeycomb duct and the inner surface of the inner tube II.

9. A return leg compensator provided with an alarm device as claimed in claim 1, wherein: the outer surfaces of the connecting pipe and the middle pipe on two sides of the corrugated pipe are respectively welded with lug plates, and the two lug plates are connected through nuts and pull rods.