Enamel flange repairing sleeve

Abstract

The utility model provides an enamel flange repair sleeve which is composed of a flange and a sleeve, an annular sealing face is arranged at the position, close to a sealing gasket, of the repair sleeve flange, and a flange repair agent filling groove is formed in the back face of the repair sleeve flange. The excircle surface of the sleeve is provided with a sleeve repairing agent filling groove and a polytetrafluoroethylene band filling groove, and two ends of the inner side of the sleeve are provided with diversion ports to reduce the scouring of the medium to the sleeve. The device is used for repairing the damaged enamel on the surface of the enamel pipeline flange, and has the characteristics of simplicity and rapidness in installation and good repairing effect.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment anti-corrosion, in particular to an enamel flange repair sleeve. Background Art

[0002] In the oxalic acid production device, the working temperatures of equipment such as enamel reaction kettles, enamel towers, and dissolving tanks are relatively high. At this temperature, the materials have extremely strong corrosivity to the carbon steel layer, which is likely to cause damage to the surface of the glass-lined enamel, especially the surface of the glass-lined enamel on the pipeline flange not only bears the impact and corrosion generated by the long-term flow of the medium, but also is affected by the uneven bolt pre-tightening force, making it more likely to cause damage to the enamel layer. With the corrosion of the carbon steel base, the enamel surface will further peel off, causing a larger area of damage. Even the carbon steel layer corrodes and perforates, making the equipment unable to continue to be used. After using an enamel repair agent to repair the damaged enamel surface at the initial stage, the service life is short and the sealing effect is not good. Content of the Utility Model

[0003] The utility model solves the problems that the sealing is not good and the service life is short after directly applying an enamel repair agent to repair the damaged enamel layer of the pipeline flange, and provides a temperature measuring instrument protection device, which has the characteristics of simple and fast installation and good repair effect.

[0004] The utility model specifically provides the following technical solution: an enamel flange repair sleeve, which is characterized in that: it is composed of a repair sleeve flange 10 and a sleeve 11. An annular sealing surface 100 is arranged on the repair sleeve flange 10 for sealing with the paired pipeline flange 3. A sealing gasket 50 is arranged between the sealing surface 100 of the repair sleeve flange and the paired pipeline flange 3; a flange repair agent filling groove 101 is arranged on the back of the repair sleeve flange 10; a sleeve repair agent filling groove 110 and a tetrafluoro tape filling groove 111 are arranged on the outer side of the sleeve 11.

[0005] Further, the side of the repair sleeve flange 10 close to the sleeve 11 and the sleeve repair agent filling groove 110 on the outer side surface of the sleeve 11 are both filled with enamel repair agent 40, and an expanded tetrafluoro tape 41 is arranged in the tetrafluoro tape filling groove 111 on the outer side surface of the sleeve 11.

[0006] Further, diversion openings 112 are arranged at both ends of the inner side of the repair sleeve 11.

[0007] The utility model has the following advantages: 1. The repair sleeve is resistant to medium corrosion. The repair agent filling groove can store enamel repair agent for filling the pits at the damaged enamel layer of the pipeline flange. Under the action of the expanded tetrafluoro tape, the repair sleeve is closely fitted with the pipeline. 2. The repair sleeve flange is provided with an annular sealing surface to ensure the sealing with the relative pipeline flange. 3. Diversion holes are arranged on the inner side of the repair sleeve to reduce the scouring of the medium on the repair sleeve and ensure the service life of the repair sleeve. Description of the Drawings

[0008] Figure 1 It is an assembly drawing of a pipe flange and a repair sleeve;

[0009] Figure 2 It is a drawing of the damaged enamel layer of the pipe flange;

[0010] Figure 3 It is a drawing of the repair sleeve;

[0011] Figure 4 It is a 3D drawing of the repair sleeve coated with enamel repair agent;

[0012] Figure 5 It is Figure 1 An enlarged view of part A.

[0013] Explanation of symbols in the attached drawings: 1. Repair sleeve; 10. Repair sleeve flange; 100. Sealing surface; 101. Flange repair agent filling groove; 11. Sleeve; 110. Sleeve repair agent filling groove; 111. Teflon tape filling groove; 112. Diversion port; 2. Pipe; 20. Enamel layer; 3. Pipe flange; 30. Damaged enamel layer; 40. Enamel repair agent; 41. Teflon tape; 50. Sealing gasket; 51. Bolt; 52. Nut; 6. Medium inside the pipe. Specific implementation manners

[0014] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0015] Embodiment 1:

[0016] As Figures 1-5 shown, it is an embodiment of an enamel flange repair sleeve of the present utility model:

[0017] As Figure 1 , Figure 3As shown in the figure, an enamel flange repair sleeve 1 is composed of a repair sleeve flange 10 and a sleeve 11, and is used to repair the damaged enamel layer 30 on the surface of the enamel pipeline flange 3. An annular sealing surface 100 is provided on the repair sleeve flange 10 for sealing with the paired pipeline flange 3, and a sealing gasket 50 is provided between the sealing surface 100 of the repair sleeve flange and the paired pipeline flange 3. A flange repair agent filling groove 101 is provided on the back of the repair sleeve flange 10 to facilitate the attachment of the enamel repair agent 40. Flow guiding ports 112 are provided at both ends of the inner side of the repair sleeve 11, which can reduce the erosion of the medium 6 on the sleeve 11 and extend the service life of the sleeve 11. A sleeve repair agent filling groove 110 and a PTFE tape filling groove 111 are provided on the outer side of the sleeve 11.

[0018] As Figure 4 shown, the flange repair agent filling groove 101 and the sleeve repair agent filling groove 110 on the outer side of the sleeve 11 are both filled with the enamel repair agent 40, and an expanded PTFE tape 41 is provided in the PTFE tape filling groove 111 on the outer side of the sleeve 11.

[0019] Combined Figure 1 , Figure 2 and Figure 4 , the repair sleeve 1 coated with the enamel repair agent 40 and provided with the expanded PTFE tape 41 is inserted into the pipeline 2, so that the repair sleeve flange 10 fits with the pipeline flange 3 to repair the damaged enamel layer 30 of the pipeline flange 3. The material of the repair sleeve 1 can resist the corrosion of the medium 6 in the pipeline.

[0020] The working principle of the present invention is as follows. Combined Figures 1-5 , the impact generated by the long-term flow of the medium 6 or the uneven pre-tightening force of the bolts 51 on the pipeline flange 3 will cause the enamel layer of the pipeline flange 3 to be damaged 30. In order to prevent the leakage of the medium 6, it is necessary to repair the damaged enamel layer 30. The outer surface of the repair sleeve 1 is covered with the enamel repair agent 40, and two expanded PTFE tapes 41 are provided. The whole is inserted into the pipeline 2. The enamel repair agent 40 on the repair sleeve 1 will bond with the pipeline enamel layer 20 and the damaged enamel layer 30 on the pipeline flange 3, and the enamel repair agent 40 will fill the pits of the damaged enamel layer 30 to complete the repair operation.

[0021] The above is only a preferred embodiment of the present invention and is not used to limit the protection scope of the present invention. Any equivalent transformation made by those skilled in the art using the above technical solutions to the present invention has not departed from the protection scope of the present invention. The protection scope of the present invention shall be subject to the content recorded in the claims.

Claims

1. An enamel flange repair sleeve, characterized in that: The invention comprises a repair sleeve flange (10) and a sleeve (11); an annular sealing surface (100) is arranged on the repair sleeve flange (10) for sealing with a matching pipe flange (3); a sealing gasket (50) is arranged between the repair sleeve flange sealing surface (100) and the matching pipe flange (3); a flange repair agent filling groove (101) is arranged on the back of the repair sleeve flange (10); and a sleeve repair agent filling groove (110) and a polytetrafluoroethylene tape filling groove (111) are arranged on the outer side of the sleeve (11).

2. The enamel flange repair sleeve according to claim 1, characterized in that: The flange repair agent filling groove (101) close to the side of the sleeve (11) and the sleeve repair agent filling groove (110) on the outer side of the sleeve (11) are all filled with enamel repair agent (40), and the polytetrafluoroethylene tape filling groove (111) on the outer side of the sleeve (11) is provided with an expanded polytetrafluoroethylene tape (41).

3. The enamel flange repair sleeve according to claim 1, characterized in that: Flow guide ports (112) are arranged at two ends of the inner side of the repair sleeve (11).

Images