CN212319023U - Anti-corrosion straight pipe for desulfurization absorption tower - Google Patents

Abstract

The utility model discloses a be applied to anticorrosive straight tube for desulfurization absorption tower in environmental protection field, its structure includes direct pipe and the flange end of branch locating direct pipe both ends, and direct pipe is including supporting outer tube and wear-resisting anticorrosive inlayer, the internal surface that supports the outer tube runs through and sets up the rotatory caulking groove of screw thread that is linked together, and the carborundum coating solidification that the internal surface of wear-resisting anticorrosive inlayer by supporting the outer tube covers the coating completely forms, and the embedded packing in the rotatory caulking groove of screw thread of carborundum coating. This application of carborundum coating has reduced manufacturing cost, and can utilize the rotatory mode of centrifugation to carry out the equipartition of coating according to the rotatory caulking groove of screw thread and the carborundum coating before the solidification, promote production quality and production efficiency, the local deepening of usable screw thread rotatory caulking groove coating is filled simultaneously, can delay the wearing and tearing cycle of coating, the protecting effect has been promoted, in addition, the restoration of wear-resisting anticorrosive inlayer can directly carry out the benefit of carborundum coating and scribble, further promote the application effect, reduce the repair cost.

Description

Anti-corrosion straight pipe for desulfurization absorption tower

Technical Field

The utility model relates to an anticorrosive straight tube for desulfurization absorption tower that environmental protection field used.

Background

The desulfurization absorption tower is tower equipment for carrying out desulfurization treatment on industrial waste gas, is easy to maintain, and can simultaneously achieve the effects of dust removal and desulfurization (denitrification) by preparing different dust removing agents. The pump straight pipe is an important conveying and transporting component, and is usually produced and molded by materials such as metal, glass fiber reinforced plastics and the like. But the unevenness of the inner surface of the straight pump pipe increases the friction force of the inner surface to a certain extent, reduces the conveying efficiency, and simultaneously, the corrosion resistance of the surface has great influence on the service life of the pipeline, and the application cost is increased. In addition, the inner surface of the pump straight pipe is difficult to repair, the repair cost is high, and the application cost is further improved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide an effectively promote anticorrosive straight tube that is used for desulfurization absorption tower of the wear-resisting anticorrosive performance of structure.

The utility model provides a technical scheme that its technical problem adopted is:

an anticorrosive straight tube for desulfurization absorption tower, including through pipe and the flange end of dividing locating through pipe both ends, the flange end includes that the coaxial protruding connector end that is equipped with spacing bulge loop of terminal surface and the female end of connection that the terminal surface was provided with spacing annular, spacing annular and spacing bulge loop looks adaptation, spacing annular is towards spacing bulge loop seted up sealed content ring chamber, sealed content ring chamber is used for the filler of seal ring spare, through pipe is including supporting outer tube and wear-resisting anticorrosive inlayer, the internal surface that supports the outer tube runs through and sets up the rotatory caulking groove of screw thread that is linked together, wear-resisting anticorrosive inlayer covers the carborundum coating solidification formation of coating completely by the internal surface that supports the outer tube, the carborundum coating is embedded to be filled in the rotatory caulking groove of screw thread.

Further, the outer loop terminal surface of spacing annular is located in the subsides of content ring chamber, the outer loop internal surface in content ring chamber and the outer loop internal surface in spacing annular are the coplanar setting, the outer loop end of sealing ring spare upwards extends the side anchor ring sealing member that forms attached in the outer loop internal surface in spacing annular, the internal diameter of side anchor ring sealing member dwindles gradually towards content ring chamber.

Further, the side ring surface sealing element is a lip-shaped sealing ring facing the opening of the inner content ring cavity, the side ring surface sealing element comprises a side ring element attached to the inner surface of the outer limiting ring groove and a lip-shaped ring obliquely arranged on the side ring element, and an adjusting ring gap is formed between the end part of the lip-shaped ring close to the inner content ring cavity and the side ring element.

Furthermore, chamfering is carried out on the end part of the outer ring of the limiting convex ring, and the chamfering height of the limiting convex ring is smaller than that of the side ring surface sealing element.

Further, the surface roughness of the wear-resistant and corrosion-resistant inner layer is lower than 0.1 um.

The utility model has the advantages that:

1. the application of the carborundum coating of this straight tube has reduced manufacturing cost, and can utilize the rotatory mode of centrifugation to carry out the equipartition of coating according to the carborundum liquid before rotatory caulking groove of screw thread and the solidification, can make rotatory caulking groove of screw thread and direction of rotation syntropy set up, do benefit to the drainage equipartition effect of coating and promote production quality and production efficiency, the local deepening of usable rotatory caulking groove coating is filled simultaneously, can delay the wear cycle of coating, has promoted the protecting effect.

2. According to the wearing and tearing principle can know that the coating that is located the internal surface at first drops, and the gomphosis can be detained at the coating of the rotatory caulking groove of inner wall screw thread, consequently the operation of easily daily maintenance of detecting a flaw, it detects a flaw detection quality to promote, can give the appearance of the operation of detecting a flaw with certain contrast volume, flaw detection effect and accuracy have been promoted, it goes on of the daily reasonable maintenance of carrying out the device to change in, in addition, the restoration of wear-resisting anticorrosive inlayer can directly carry out the benefit of carborundum coating and scribble, thereby promote the application effect, the repair cost is reduced.

3. The cooperation of the side anchor ring sealing member of the seal ring piece is used, has promoted the sealed effect of encirclement to spacing bulge loop terminal surface, and then realizes sealed to the parcel formula of its tip, promotes sealed effect, utilizes lip structure to promote simultaneously sealed regulation and control effect, guarantees connection quality, can give certain reaction space, guarantees the feedback effect.

4. The reduction of the surface roughness of the wear-resistant anticorrosive layer can improve the conversion efficiency of power, improve the efficiency and ensure the practicability and the transmission efficiency of the device.

Drawings

FIG. 1 is a schematic structural view of an anti-corrosion straight pipe for a desulfurization absorption tower according to the present invention;

fig. 2 is a schematic structural view of the female connection end 3 and the lip-shaped sealing ring for the desulfurization absorption tower of the present invention;

FIG. 3 is a schematic partial cross-sectional view of the outer support tube for a desulfurization absorption tower according to the present invention;

labeled as: 1. a connector terminal; 2. a straight-through pipe; 21. supporting the outer tube; 211. the thread is inserted into the groove in a rotating way; 22. a wear-resistant and corrosion-resistant inner layer; 3. connecting the female end; 4. a seal ring; 41. a side annulus seal.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

As shown in fig. 1 to 3, two ends of the straight-through pipe 2 of the corrosion-resistant straight pipe are respectively provided with a connecting flange end. The straight-through pipe 2 consists of an outer supporting pipe 21 and an inner wear-resistant and corrosion-resistant layer 22. The inner surface of the supporting outer tube 21 is penetrated with a threaded rotary caulking groove 211 communicated with each other, the threaded rotary caulking groove 211 can be set to a groove depth of 0.5cm, and the structure of the threaded rotary caulking groove can refer to the arrangement of internal threads. And inside wear-resisting anticorrosive inlayer 22 is consolidated by the carborundum coating that supports the internal surface of outer tube 21 and cover the coating completely and forms, and the carborundum coating is embedded to be filled in the rotatory caulking groove 211 of screw thread, and the usable centrifugal rotatory mode of this mode of production is coated to utilize the syntropy rotatory effect to promote the embedded effect of coating extension, guarantee coating quality. Meanwhile, the surface roughness of the wear-resistant and corrosion-resistant inner layer 22 formed by curing the silicon carbide coating is lower than 0.1um, so that the friction force between the wear-resistant and corrosion-resistant inner layer and the transmission liquid is reduced, and the transmission effect is ensured. After using a period of time, wear-resisting anticorrosive inlayer 22 progressively wears out, when wearing and tearing to the rotatory caulking groove of screw 211, this peripheral internal surface that supports outer tube 21 carries out the part and exposes, and still have the material of carborundum coating to fill in the rotatory caulking groove of screw 211, and then has formed the internal surface material environment of transform, and at this moment, the difference of usable material that supports outer tube 21 and wear-resisting anticorrosive inlayer 22 promotes the effect of detecting a flaw, realizes timely repair operation. The wear-resistant and corrosion-resistant inner layer 22 can be directly coated and cured with the silicon carbide coating in the repairing process, so that the structural repairing capacity of the device is improved, the service life is prolonged, and the application cost is reduced. In addition, the rotatory caulking groove 211 of screw thread can promote the change of the coating degree of depth of wear-resisting anticorrosive inlayer 22, promotes the gomphosis and connects the quality, avoids the appearance that the synchronous quality of large tracts of land is poor, and the exposure of the internal surface of the support outer tube 21 of large tracts of land has promptly reduced the corrosion damage progress, has guaranteed the conveying application effect. The wear-resistant and corrosion-resistant inner layer 22 extends to two ends of the corrosion-resistant straight pipe to ensure the overall wear-resistant quality and smooth pipe diameter matching effect after connection.

In the process of pipeline connection, the ends of the connecting flanges at the two ends of the straight-through pipe 2 are respectively positioned and fastened. In order to ensure the connection effect, the connecting sub-end 1 and the connecting female end 3 of the connecting flange end are respectively provided with a corresponding limiting convex ring and a limiting ring groove. In the application process, the limiting convex ring inner sleeve of the connected secondary end 1 is connected with the connecting female end 3, and then the fastening connection of the two end parts is carried out by utilizing an external connecting piece, and the connection mode can be realized by a hoop and a bolt which is circumferentially arranged. The limiting ring groove faces the limiting convex ring and is provided with a sealing content ring cavity filled with a sealing ring piece 4. The inner ring surface of the inner ring cavity and the inner ring surface of the limit ring groove are arranged in the same plane, the outer ring end of the sealing ring piece 4 arranged in the inner ring cavity extends upwards to form a side ring surface sealing piece 41 attached to the inner ring surface of the limit ring groove, and the inner diameter of the side ring surface sealing piece 41 is gradually reduced towards the inner ring cavity, so that an inverted cone-shaped inlet structure is formed. The side annulus seal 41 may be provided as a solid rubber material or as a lip seal ring opening to the inner annular cavity as shown in figure 2. In this case, the side ring surface sealing member 41 includes a side ring member fitted to the inner surface of the outer ring of the retainer ring groove and a lip ring obliquely disposed on the side ring member, and an adjustment annular gap is formed between an end portion of the lip ring close to the inner annular cavity and the side ring member. During application, outboard placement of the seal ring 4 is avoided, so that the side annulus seal 41 is positioned lower than the retainer ring groove. In the installation process, the limit convex ring sequentially enters the limit ring groove and the side ring surface sealing element 41 until the end surface of the limit convex ring reaches the position of the sealing ring element 4, and the maximum inner diameter of the side face-changing sealing element 41 is smaller than the inner diameter of the sealing ring element 4, so that the end surface of the sealing ring element 4 installed and contained in the ring cavity is ensured to be in contact with the outer ring of the end surface of the limit convex ring, and the sealing operation is further carried out on the end surface. At this moment, the staff can utilize staple bolt or circumference bolt to fasten the location operation, and the spacing bulge loop that corresponds extrudees seal ring spare 4 and makes it produce deformation, and side ring face sealing member 41 also correspondingly produces extrusion deformation, and then packs its regulating ring footpath, promote sealed deformation regulating effect, and utilize seal ring spare 4 and side ring face sealing member 41 to realize the synchronous seal of terminal surface and anchor ring to its junction, promote sealed effect, the effort that external impact formed the junction has been reduced simultaneously, the structure buffering effect has been promoted. In order to ensure that the limiting convex ring smoothly enters a path formed by the surrounding of the side annular surface sealing element 41, the end part of the outer ring of the limiting convex ring is chamfered, the chamfering height of the limiting convex ring is smaller than that of the side annular surface sealing element, the chamfering angle of the limiting convex ring is larger than an included angle formed by the inner surface of the side annular surface sealing element and the sealing ring element, the angle can be selected according to actual requirements, and meanwhile, the sealing effect of the sealing ring element 4 is ensured.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (5)

1. An anti-corrosion straight pipe for a desulfurization absorption tower comprises a straight pipe (2) and connecting flange ends arranged at two ends of the straight pipe (2) respectively, wherein each connecting flange end comprises a connecting sub end (1) with a limiting convex ring coaxially and convexly arranged on the end surface and a connecting female end (3) with a limiting ring groove arranged on the end surface, the limiting ring grooves are matched with the limiting convex rings, the limiting ring grooves face the limiting convex rings and are provided with sealing inner ring cavities, and the sealing inner ring cavities are used for filling sealing ring pieces (4), and the anti-corrosion straight pipe is characterized in that the straight pipe (2) comprises a supporting outer pipe (21) and an anti-corrosion inner layer (22), the inner surface of the supporting outer pipe (21) is provided with a threaded rotary caulking groove (211) communicated with each other in a penetrating manner, and the anti-corrosion inner layer (22) is formed by curing a silicon carbide coating which completely covers and coats the inner surface, the silicon carbide coating is embedded and filled in the thread rotating caulking groove (211).

2. The corrosion-resistant straight pipe for the desulfurization absorption tower as recited in claim 1, wherein the inner annular cavity is attached to the outer annular end surface of the limiting ring groove, the inner surface of the outer ring of the inner annular cavity and the inner surface of the outer ring of the limiting ring groove are arranged in the same plane, the outer annular end of the sealing ring member (4) extends upwards to form a side annular surface sealing member (41) attached to the inner surface of the outer ring of the limiting ring groove, and the inner diameter of the side annular surface sealing member (41) is gradually reduced towards the inner annular cavity.

3. The corrosion-resistant straight pipe for the desulfurization absorption tower as recited in claim 2, wherein the side annular surface sealing element (41) is a lip-shaped sealing ring which is opened towards the inner annular cavity, the side annular surface sealing element (41) comprises a side annular element which is attached to the inner surface of the outer ring of the limiting ring groove and a lip-shaped ring which is obliquely arranged on the side annular element, and an adjusting annular gap is formed between the end part of the lip-shaped ring which is close to the inner annular cavity and the side annular element.

4. The corrosion-resistant straight pipe for the desulfurization absorption tower as recited in claim 3, wherein the end part of the outer ring of the limiting convex ring is chamfered, the chamfer angle of the limiting convex ring is larger than the included angle formed by the inner surface of the side annular surface sealing element (41) and the sealing ring element (4), and the chamfer height of the limiting convex ring is smaller than the height of the side annular surface sealing element (41).

5. The corrosion-resistant straight pipe for a desulfurization absorption tower according to claim 1, wherein the surface roughness of the wear-resistant corrosion-resistant inner layer (22) is less than 0.1 um.

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