CN204852749U - Socket joint formula antiseep expansion joint - Google Patents

Abstract

The utility model belongs to the technical field of glass fiber reinforced plastic chimneys and discloses a socket type anti-seepage expansion joint. Its main technical scheme includes the upper and lower chimney sections respectively provided with sockets and sockets, the upper and lower expansion joint flanges fixed by flange bonding and the connected skin respectively; A liquid retaining ring is arranged on the pipe wall in the section; a liquid guide hole is arranged on the socket chimney section of the lower section of the above-mentioned expansion joint. The socket-type anti-leakage expansion joint can effectively solve the problem that condensate flows down from the wall of the upper glass fiber reinforced plastic chimney into the expansion joint and causes corrosion to the skin of the expansion joint. The socket-type anti-seepage expansion joint has the characteristics of long service life.

Description

A socket type anti-leakage expansion joint

technical field

The utility model belongs to the technical field of glass fiber reinforced plastic chimneys, and relates to a socket type anti-leakage expansion joint used on glass fiber reinforced plastic chimneys or vertical flues.

Background technique

Expansion joints are also customarily called compensators or expansion joints. It consists of a skin (an elastic element) that constitutes its main body and accessories such as end pipes, brackets, flanges, and conduits. The expansion joint is a flexible structure arranged on the container shell or pipeline in order to compensate the additional stress caused by temperature difference and mechanical vibration. Utilize the effective telescopic deformation of the skin of its working body to absorb the dimensional changes of pipelines, conduits, containers, etc. caused by thermal expansion and contraction, or compensate for the axial, lateral, and angular displacement of pipelines, conduits, containers, etc. It can also be used for noise reduction and vibration reduction. As an elastic compensation element that can freely expand and contract, the expansion joint has the advantages of reliable operation, good performance, and compact structure, and has been widely used in chemical industry, metallurgy, nuclear energy and other departments. There are many types of expansion joints used on containers. As far as the shape of the corrugation is concerned, U-shaped expansion joints are the most widely used, followed by Ω-shaped and C-shaped. The structure of the suspended FRP chimney inner cylinder is composed of several sections of FRP chimney inner cylinders suspended on platforms of different heights inside the chimney. Each section is connected by a freely deformable expansion joint to eliminate thermal expansion and contraction and chimney level. The effect of longitudinal (horizontal) stretching deformation caused by displacement phenomenon.

At present, during the use of the expansion joint, the rising airflow inside the chimney directly touches the skin of the expansion joint, making the skin vulnerable to corrosion by the flue gas; If there is too much fluid at the joint, it is not easy to discharge, and it is easy to corrode the material of the expansion joint, which reduces the service life of the expansion joint.

Utility model content

The purpose of the utility model is to provide a plug-in anti-leakage expansion joint which can prevent corrosion caused by smoke and condensate entering the expansion joint and has a long service life.

In order to achieve the above object, the technical solution adopted by the utility model is:

A socket-type anti-seepage expansion joint, including upper and lower chimney sections respectively provided with sockets and sockets, upper and lower expansion joint flanges fixed by flange bonding and connected skins respectively; it is characterized in that : A liquid retaining ring is arranged on the inner pipe wall of the upper chimney section where the socket is arranged.

Additional technical features constituting the above-mentioned socket-type anti-seepage expansion joint include:

- The liquid retaining ring has a set taper;

- There is an overlapping section between the liquid retaining ring and the socket;

——A liquid guide hole is arranged on the socket chimney section of the lower section of the expansion joint.

Compared with the prior art, the socket-type anti-leakage expansion joint provided by the utility model has the following advantages: First, since a liquid retaining ring is arranged on the inner pipe wall of the upper chimney section of the socket, it forms a joint with the lower end socket; The barrier to block the flue gas separates the skin of the expansion joint from the rising airflow inside the chimney, effectively reducing the corrosion of the skin of the expansion joint by the flue gas. The upper glass fiber reinforced plastic chimney wall flows down and flows along the liquid baffle to the lower chimney, so it can effectively prevent the corrosive condensate from entering the expansion joint to cause corrosion of the expansion joint skin, prolonging its service life; second, There is a liquid guide hole at the lower end of the expansion joint, so that the condensate in the expansion joint can flow out from the liquid guide hole, which can effectively prevent the occurrence of liquid accumulation at the bottom of the expansion joint.

Description of drawings

Fig. 1 is a schematic structural diagram of a socket-type anti-leakage expansion joint provided by the utility model.

Detailed ways

The structure and operating principle of the socket-type anti-seepage expansion joint provided by the utility model will be further described in detail below in conjunction with the accompanying drawings.

As shown in Fig. 1, it is a schematic structural diagram of the socket type anti-leakage expansion joint provided by the utility model. The structure of the socket-type anti-leakage expansion joint includes: upper and lower chimney sections 1 and 11 respectively provided with sockets 7 and sockets 9, upper and lower expansion joint flanges 4 fixed by flange bonding 2, 10 and the skin 6 connected by the pressing plate and the fixing bolt 5; on the inner pipe wall 12 of the upper chimney section where the socket is provided, a tapered liquid barrier with a taper that facilitates the condensate to drip in the lower chimney section is provided. Circle 3.

In the structure of the above-mentioned socket-type anti-leakage expansion joint, the upper FRP chimney 1 and the socket 7 are integrally wound and formed, and the expansion joint flange 4 is fixedly bonded to the upper FRP chimney 1 by FRP hand lay-up. A compression plate 5 is attached to the outer side of the skin 6, and the expansion joint flange 4, the skin 6 and the compression plate 5 are connected by bolts to achieve the effect of sealing and anti-leakage. There is a certain taper when the liquid baffle plate 3 is bonded to the upper glass fiber reinforced plastic chimney 1 and an overlapping section 13 is provided between the socket and the overlapping section can be freely inserted into the lower glass fiber reinforced plastic chimney 11 . The liquid retaining ring 3 has the function of diverting the condensate, which can make the condensate flow down from the wall of the upper glass fiber reinforced plastic chimney, and flow to the lower glass steel chimney along the liquid baffle 3, so as to avoid excessive accumulation of condensate at the expansion joint. The liquid retaining ring 3 and the socket 9 can form a barrier to separate the skin 6 from the rising airflow inside the chimney, effectively reducing the corrosion of the skin 6 by the flue gas. On the socket chimney section of the lower section of the expansion joint, a liquid guide hole (the bottom of the socket 9) is provided with a liquid guide hole 8, and the condensate in the expansion joint can be discharged from the liquid guide hole 8, which can effectively prevent the occurrence of liquid accumulation at the bottom of the expansion joint .

The chimney expansion joint provided by the utility model has the characteristics of simple structure and good use effect.

Claims (4)

1. a spigot and socket type leakage proof expansion joint, comprises the upper and lower chimney segment being respectively arranged with bellmouth and socket, the upper and lower expansion joint flange fixing respectively by flange bonding and the covering of connection; It is characterized in that: on the upper chimney segment inner tubal wall that described bellmouth is set, be provided with liquid retaining ring.

2. a kind of spigot and socket type leakage proof expansion joint according to claim 1, is characterized in that: described liquid retaining ring has the tapering of setting.

3. a kind of spigot and socket type leakage proof expansion joint according to claim 1, is characterized in that: be provided with lap segment between described liquid retaining ring and described socket.

4. a kind of spigot and socket type leakage proof expansion joint according to claim 1, is characterized in that: on the socket chimney segment of described expansion joint hypomere, be provided with delivery hole.