CN215060373U

CN215060373U - Non-metal expansion joint structure

Info

Publication number: CN215060373U
Application number: CN202120830090.2U
Authority: CN
Inventors: 王向国; 孙健; 陶亮; 郭启彤; 吴洋
Original assignee: SHENYANG YUANDA ENVIRONMENTAL ENGINEERING CO LTD
Current assignee: SHENYANG YUANDA ENVIRONMENTAL ENGINEERING CO LTD
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-12-07
Anticipated expiration: 2031-04-22

Abstract

The utility model relates to a non-metal expansion joint structure, including covering, end pipe, drainage pipe, its technical essential is: the upper end of the drainage guide pipe is provided with an external thread, an external positioning baffle is arranged at a position, away from the external thread, of the drainage guide pipe by a set distance, the bottom of the skin is provided with a through hole corresponding to the drainage guide pipe, the upper end of the drainage guide pipe penetrates through the through hole and is in threaded connection with an internal locking nut, the skin on the periphery of the through hole is clamped between the internal locking nut and the external positioning baffle, and the lower end of the drainage guide pipe is provided with a flange plate; the top surface of one of them end pipe is fixed with the support, and the top surface of support is fixed with the expansion bracket, and the expansion bracket is equipped with the cantilever that extends to the covering top, is fixed with proximity switch on the cantilever, and the intermediate position at covering top is equipped with the response piece, and the response piece corresponds each other with proximity switch's sense terminal. The problem of ponding in the expansion joint has been solved to this structure, in time feeds back production system under the skin bloated excessive condition simultaneously, extension expansion joint life also avoids the expansion joint damage to cause the flue gas to leak.

Description

Non-metal expansion joint structure

Technical Field

The utility model relates to an expansion joint technical field for the flue specifically is a nonmetal expansion joint structure, is applicable to the humid medium environment.

Background

The non-metal expansion joint mainly comprises a skin and an end pipe which form a working main body of the non-metal expansion joint. The device is generally applied to a wet flue gas desulfurization process pipeline of a thermal power plant, plays a role in temperature compensation in the flue gas conveying process, and avoids mechanical vibration.

Non-metallic expansion joints are a flexible structure on the vessel shell or pipe that presents the following problems during use: 1. because of the structural particularity, a water-containing medium can be separated out and part of water is attached to the inner surface of the skin, accumulated water is formed at the bottom of the skin under the action of gravity, the water in the flue dissolves acid and various compounds, the flue is easy to corrode, and the water can be frozen under the condition of shutdown in winter in the north, so that the service life of the expansion joint can be shortened; 2. The skin is excessively expanded for a long time under the high-pressure state, and can cause rupture to cause flue gas leakage, but at present, direct monitoring means is not provided to guarantee that the maintenance is timely and effective.

Disclosure of Invention

The utility model aims at providing a simple structure, use reliable nonmetal expansion joint structure solve the expansion joint problem of ponding, in time feed back production system under the skin bloated excessive condition simultaneously, extension expansion joint life also avoids the expansion joint damage to cause the flue gas to leak.

The technical scheme of the utility model is that:

the utility model provides a non-metallic expansion joint structure, includes the covering, with the end pipe that the left and right both ends of covering are connected, locate the drainage pipe of covering bottom, its technical essential is: the upper end of the drainage guide pipe is provided with an external thread, an external positioning baffle is arranged at a position, away from the external thread, of the drainage guide pipe by a set distance, a through hole corresponding to the drainage guide pipe is arranged at the bottom of the skin, the upper end of the drainage guide pipe penetrates through the through hole and is in threaded connection with an internal locking nut, the skin on the periphery of the through hole is clamped between the internal locking nut and the external positioning baffle, and the lower end of the drainage guide pipe is provided with a flange plate; one of them the top surface of end pipe is fixed with the support, the top surface of support is fixed with the expansion bracket, the expansion bracket is equipped with the cantilever that extends to the covering top, be fixed with proximity switch on the cantilever, the intermediate position at covering top is equipped with the response piece, the response piece corresponds each other with proximity switch's sense terminal.

In the nonmetal expansion joint structure, the middle position of the top of the skin is coated with the positioning adhesive layer, and the bottom surface of the induction sheet is embedded into the positioning adhesive layer.

The telescopic frame is composed of a telescopic seat with a central vertical hole and a telescopic rod with the lower end inserted into the central vertical hole of the telescopic seat, a plurality of jackscrew holes longitudinally distributed are formed in the outer wall of the telescopic seat, the jackscrew holes are communicated with the central vertical hole, the top end of the telescopic rod is connected with a cantilever, and a diagonal brace is additionally connected between the cantilever and the telescopic rod.

In the non-metal expansion joint structure, the lower end of the drainage conduit is connected with the water conveying pipeline by the flange plate, and the lower end of the water conveying pipeline is an oblique opening and is inserted into the water seal groove.

The utility model has the advantages that:

1. the drainage guide pipe is used for guiding accumulated water in the expansion joint out, the connection structure of the upper end of the drainage guide pipe and the bottom of the skin is simple, the drainage guide pipe is convenient to install and disassemble, the locking nut and the outer positioning baffle piece are used for clamping the skin at the periphery of the through hole to achieve positioning, and meanwhile due to the non-metal characteristic of the skin, the locking nut and the outer positioning baffle piece are tightly attached to form a sealing structure together, the sealing performance is good, and the leakage is avoided. When water is accumulated, the water in the expansion joint is led out by the drainage conduit, so that the expansion joint is prevented from being corroded and frozen, and the service life of the expansion joint is effectively prolonged.

2. Arrange the response piece at the covering top surface of expansion joint, hang simultaneously and establish proximity switch, it is too big when the covering bloated degree, when leading to the response piece to be close to proximity switch, proximity switch feedback signal gives production control system, makes the staff in time adjust flue gas flow, and whether the while inspection expansion joint position is impaired, avoids the covering to break to avoid the flue gas to leak, realize direct effectual monitoring.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a side view of FIG. 2;

fig. 4 is an enlarged view of a portion B in fig. 1.

In the figure: 1. the device comprises an end pipe, a covering, a drainage guide pipe, a flange plate, a water conveying pipeline, a water seal groove, a support, a telescopic seat, a telescopic rod, a diagonal rib, a cantilever, a proximity switch, a sensing sheet, a positioning adhesive layer, a fixing hole, a positioning pin hole, a positioning nut, an inner locking nut and an outer positioning baffle, wherein the end pipe is 2, the covering is 3, the drainage guide pipe is 4, the flange plate is 5, the water conveying pipeline is 6, the water seal groove is 7, the support is 8, the telescopic seat is 9, the telescopic rod is 10, the diagonal rib is 11, the cantilever is 12, the proximity switch is 13, the sensing sheet is 14, the positioning adhesive layer is 15, the fixing hole is 16, the positioning pin hole is 17, the inner locking nut is 18, and the outer positioning baffle is 19.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and reference numerals.

As shown in fig. 1-4, the non-metal expansion joint structure comprises a skin 2, end pipes 1 connected with the left and right ends of the skin 2, and a drainage conduit 3 arranged at the bottom of the skin 2.

Wherein, the upper end of the drainage conduit 3 is provided with an external thread, and the position of the drainage conduit 3 away from the external thread by a set distance is provided with an external positioning baffle plate 19. The bottom of the skin 2 is provided with a through hole corresponding to the drainage conduit 3, the upper end of the drainage conduit 3 penetrates through the through hole and is in threaded connection with an inner locking nut 18, and the skin on the periphery of the through hole is clamped between the inner locking nut 18 and an outer positioning baffle plate 19. In order to improve the installation stability, the upper end of the drainage conduit 3 is additionally connected with a positioning nut 17 attached to an inner locking nut 18. The lower end of the drainage guide pipe 3 is provided with a flange plate 4. The lower end of the drainage conduit 3 is connected with a water conveying pipeline 5 by a flange plate 4, and the lower end of the water conveying pipeline 5 is an oblique opening and is inserted into a water seal groove 6.

The top surface of 2 left side end pipes of covering is fixed with support 7, the top surface of support 7 is fixed with the expansion bracket, the expansion bracket is equipped with the cantilever 11 that extends to 2 tops of covering, be fixed with proximity switch 12 on the cantilever 11, the intermediate position at 2 tops of covering is equipped with response piece 13, response piece 13 corresponds each other with proximity switch 12's sense terminal.

In this embodiment, the middle position of the top of the skin 2 is coated with a positioning adhesive layer 14, and the bottom surface of the sensing piece 13 is embedded in the positioning adhesive layer 14. The telescopic frame is composed of a telescopic seat 8 with a central vertical hole and a telescopic rod 9 with the lower end inserted into the central vertical hole of the telescopic seat 8, a plurality of jackscrew holes longitudinally arranged are arranged on the outer wall of the telescopic seat 8, the jackscrew holes are communicated with the central vertical hole, the top end of the telescopic rod 9 is connected with a cantilever 11, and a diagonal draw bar 10 is additionally connected between the cantilever 11 and the telescopic rod 9. The support 7 is a right-angle support, and in order to ensure the position accuracy of the support 7, a horizontal section at the bottom of the support 7 is provided with a positioning pin hole 16 and a fixing hole 15.

When the water-sealed smoke-proof cover is used, when water flow enters the bottom of the cover 2, the water flow is discharged into the water-sealed groove 6 through the drainage guide pipe 3 and the water conveying pipeline 5, and the water-sealed groove 6 also avoids smoke leakage during normal work. When the skin 2 is excessively expanded under a high-pressure state, the induction sheet 13 is close to the proximity switch 12, and the proximity switch 12 feeds back a signal to the production control system, so that the production control system can adjust the flow of smoke in time, and meanwhile, workers can check the state of the expander in time on site, and the expander is prevented from being excessively damaged.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.

Claims

1. The utility model provides a nonmetal expansion joint structure, includes the covering, with the end pipe that the left and right both ends of covering are connected, locate the drainage pipe of covering bottom, its characterized in that: the upper end of the drainage guide pipe is provided with an external thread, an external positioning baffle is arranged at a position, away from the external thread, of the drainage guide pipe by a set distance, a through hole corresponding to the drainage guide pipe is arranged at the bottom of the skin, the upper end of the drainage guide pipe penetrates through the through hole and is in threaded connection with an internal locking nut, the skin on the periphery of the through hole is clamped between the internal locking nut and the external positioning baffle, and the lower end of the drainage guide pipe is provided with a flange plate; one of them the top surface of end pipe is fixed with the support, the top surface of support is fixed with the expansion bracket, the expansion bracket is equipped with the cantilever that extends to the covering top, be fixed with proximity switch on the cantilever, the intermediate position at covering top is equipped with the response piece, the response piece corresponds each other with proximity switch's sense terminal.

2. The non-metallic expansion joint structure of claim 1, wherein: the middle position of covering top coats and has the location glue film, the response piece bottom surface embedding is in the location glue film.

3. The non-metallic expansion joint structure of claim 1, wherein: the telescopic frame is composed of a telescopic seat with a central vertical hole and a telescopic rod with the lower end inserted into the central vertical hole of the telescopic seat, a plurality of jackscrew holes longitudinally distributed are formed in the outer wall of the telescopic seat, the jackscrew holes are communicated with the central vertical hole, the top end of the telescopic rod is connected with a cantilever, and a diagonal brace is additionally connected between the cantilever and the telescopic rod.

4. The non-metallic expansion joint structure of claim 1, wherein: the lower end of the drainage conduit is connected with a water conveying pipeline by a flange plate, and the lower end of the water conveying pipeline is an oblique opening and is inserted into the water seal groove.