CN215215709U - Main steam drain pipeline structure of waste heat power generation boiler - Google Patents

Abstract

The utility model discloses a waste heat power generation boiler main steam hydrophobic pipeline structure, including boiler and execution end, connect through stainless steel flexible pipe between boiler and the execution end, stainless steel flexible pipe's a pot head is in the outside of the play steam pipe of boiler, and stainless steel flexible pipe's other pot head is in the outside of the income steam pipe of execution end, goes out the steam pipe and goes into all to have offered annular groove on the steam pipe, is provided with the convex part on the stainless steel flexible pipe, and the convex part corresponds the joint in annular groove, and stainless steel flexible pipe's both ends are all through the ring flange and go out the steam pipe and go into the steam union coupling. The utility model has the advantages that: the stainless steel hose is connected between the boiler and the execution end, rigid connection is changed into flexible connection, the expansion range between pipelines is enlarged, the pipelines are not prone to being torn, sealing connection is achieved between the stainless steel hose and the steam outlet pipe and between the stainless steel hose and the steam inlet pipe through the matching of the convex portion and the annular groove, the situation that welding seams are torn is avoided, and finally the stainless steel hose is fixed through the flange plate.

Description

Main steam drain pipeline structure of waste heat power generation boiler

Technical Field

The utility model relates to a drain pipe field, especially a waste heat power boiler main steam drain pipe structure.

Background

Waste heat power boiler need open the hydrophobic pipeline and carry out the moisture in pressure release and the discharge steam when splitting or the operation of merging, and at this in-process, the hydrophobic pipeline is because from normal atmospheric temperature state under, is heated suddenly (steam temperature is up to 300 degrees more), and the inflation volume is great, very easily tears the welding seam, causes steam leakage, needs the unit to shut down to maintain when serious, threatens greatly production system's security.

The main reason for tearing the pipeline and the welding seam is that the pipeline is too large in thermal deformation, and in the prior art, the connection between the drainage pipeline and the main pipe is rigid connection, and once the deformation exceeds the limit value of metal, the pipeline and the welding seam are torn.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome prior art pipeline and receive the deformation volume too big shortcoming that causes pipeline and welding seam to tear, provide a waste heat power boiler main steam drain pipe structure.

The purpose of the utility model is realized through the following technical scheme: a main steam drain pipeline structure of a waste heat power generation boiler,

including boiler and execution end, connect through stainless steel hose between boiler and the execution end, the play steam end of boiler is provided with out the steam pipe, the income steam end of execution end is provided with into the steam pipe, go out the steam pipe and all seted up annular groove on going into the terminal surface of steam pipe, stainless steel hose's both ends all seted up with annular groove complex convex part, stainless steel hose's both ends are respectively through ring flange and play steam pipe and income steam union coupling, and the convex part cooperation is in the annular groove that corresponds.

Preferably, the flange plate on one end of the stainless steel hose is connected with the flange plate on the boiler through a screw rod, and a first sealing gasket is further arranged between the two flange plates.

Preferably, the flange plate on the other end of the stainless steel hose is connected with the flange plate on the execution end through a screw rod, and a first sealing gasket is further arranged between the two flange plates.

Preferably, the ring flanges sleeved at two ends of the stainless steel hose are provided with ring grooves, the cross sections of the ring grooves are of a trapezoidal structure, the width of the groove openings of the ring grooves is smaller than the width of the groove bottoms of the ring grooves, first sealing gaskets are arranged in the ring grooves, and the first sealing gaskets are partially positioned on the outer sides of the ring grooves.

Preferably, the stainless steel hose is made of high-temperature resistant materials, and a heat insulation layer is further arranged on the surface of the stainless steel hose.

Preferably, a second sealing gasket is further arranged in the annular groove.

The utility model has the advantages of it is following: the utility model discloses a between stainless steel hose connection boiler and the execution end, changed rigid connection into flexonics, can make the expansion range between the pipeline strengthen, difficult emergence pipeline tears, and stainless steel hose and play steam pipe and go into to realize sealing connection through convex part and annular groove cooperation between the steam pipe, has avoided the tearing condition of welding seam to take place, fixes through the ring flange at last.

Drawings

FIG. 1 is a schematic structural view of a water pipeline;

FIG. 2 is a schematic view of the flange;

FIG. 3 is a schematic view of the flange mounting structure;

in the figure, 1-boiler, 2-stainless steel hose, 3-execution end, 4-flange, 5-screw, 6-nut, 7-mounting hole, 8-first sealing gasket, 9-annular groove, 10-annular groove, 11-steam outlet pipe and 12-second sealing gasket.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships which are usually placed when the products of the present invention are used, or the directions or positional relationships which are usually understood by those skilled in the art, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have specific directions, be constructed and operated in specific directions, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In this embodiment, as shown in fig. 1, a main steam drain pipe structure of a waste heat power generation boiler comprises a boiler 1 and an execution end 3, the boiler 1 and the execution end 3 are connected through a stainless steel hose 2, a steam outlet pipe 11 is arranged at the steam outlet end of the boiler 1, a steam inlet pipe is arranged at the steam inlet end of the execution end 3, the specific connection mode is that one end of the stainless steel hose 2 is sleeved outside the steam outlet pipe 11 of the boiler 1, the other end of the stainless steel hose 2 is sleeved outside the steam inlet pipe of the execution end 3, annular grooves 10 are respectively arranged on the end surfaces of the steam outlet pipe 11 and the steam inlet pipe, two ends of the stainless steel hose 2 are respectively provided with a convex portion which is matched with the annular groove 10, preferably, a second sealing gasket 12 is further arranged in the annular groove 10, when the convex portion is matched in the corresponding annular groove 10, a small portion of high-temperature gas can still be sprayed out from between the pipes, which may cause accidental injury to workers, the high-temperature gas can be prevented from being blown out from between the pipes by the second packing 12. Two ends of the stainless steel hose 2 are respectively connected with the steam outlet pipe 11 and the steam inlet pipe through the flange 4, and the convex parts are matched in the corresponding annular grooves 10. Connect boiler 1 and execution end 3 between through stainless steel hose 2, flexible connection has been changed into rigid connection, can make stainless steel hose 2, the expansion range between play steam pipe 11 and the income steam pipe increases, difficult pipeline tearing that takes place, the security and the stability of equipment have been improved, and stainless steel hose 2 and play steam pipe 11 and go into to realize sealing connection through convex part and the cooperation of annular groove 10 between the steam pipe, the condition of having avoided the tearing of welding seam to take place, fix through ring flange 4 at last.

In this embodiment, the flange plate 4 on one end of the stainless steel hose 2 is connected with the flange plate 4 on the boiler 1 through the screw rod 5, that is, the flange plate 4 is respectively sleeved on one end of the stainless steel hose 2 and the steam outlet pipe 11 of the boiler 1, the flange plate 4 is provided with the mounting hole 7 distributed on the same circumference, the screw rod 5 is installed in the mounting hole 7, and the two ends of the screw rod 5 are fixed through the nut 6. A first sealing gasket 8 is arranged between the two flange plates 4. The mounting means between the steam inlet pipe of stainless steel hose 2 and execution end 3 is the same as the mounting means between steam outlet pipe 11 of stainless steel hose 2 and boiler 1, namely, flange plate 4 is respectively sleeved on the steam inlet pipe of the other end of stainless steel hose 2 and execution end 3, mounting hole 7 distributed on the same circumference is provided on flange plate 4, screw rod 5 is installed in mounting hole 7, and both ends of screw rod 5 are fixed through nut 6, and first sealing gasket 8 is further arranged between two flange plates 4. Further, the ring channel 9 has been seted up on the ring flange 4 of cover at stainless steel hose 2 both ends, the cross-section of ring channel 9 is trapezium structure, and the notch width of ring channel 9 is less than the tank bottom width of ring channel 9, be provided with first sealed pad 8 in the ring channel 9, first sealed pad 8 part is located the ring channel 9 outside, when two ring flanges 4 pass through screw rod 5 installation, ring flange 4 on the play steam pipe 11 or the ring flange 4 extrusion first sealed pad 8 on going into the steam pipe, can make seal installation between two ring flanges 4, can prevent effectively that high temperature steam from leaking out and cause the injury to the staff. When the screw 5 is removed, the first seal gasket 8 is also less likely to fall off because the width of the notch of the annular groove 9 is smaller than the width of the groove bottom of the annular groove 9.

Preferably, the stainless steel hose 2 is made of a high temperature resistant material, and in the present embodiment, the stainless steel hose 2 is made of 304 stainless steel. Further, the surface of the stainless steel hose 2 is also provided with a heat insulation layer. The purpose of insulating layer is in order to prevent that the staff from touching the surface of stainless steel hose 2 by mistake and causing the scald, and in this embodiment, the insulating layer is the asbestos layer.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (6)

1. The utility model provides a waste heat power generation boiler main steam drain pipe structure, includes boiler (1) and execution end (3), its characterized in that: boiler (1) with connect through stainless steel hose (2) between execution end (3), the play steam end of boiler (1) is provided with out steam pipe (11), the income steam end of execution end (3) is provided with into steam pipe, go out steam pipe (11) with annular groove (10) have all been seted up on the terminal surface of income steam pipe, the both ends of stainless steel hose (2) all seted up with annular groove (10) complex convex part, the both ends of stainless steel hose (2) respectively through ring flange (4) with go out steam pipe (11) with go into the steam union coupling, just the convex part cooperation is corresponding in annular groove (10).

2. The main steam drain pipe structure of the waste heat power generation boiler according to claim 1, characterized in that: the boiler is characterized in that the flange plate (4) at one end of the stainless steel hose (2) is connected with the boiler (1) through the screw (5), and a first sealing gasket (8) is further arranged between the flange plates (4).

3. The main steam drain pipe structure of the waste heat power generation boiler according to claim 1, characterized in that: the other end of the stainless steel hose (2) is provided with the flange plate (4) and the execution end (3) is provided with the flange plate (4) which is connected through the screw rod (5), and a first sealing gasket (8) is arranged between the flange plates (4).

4. The main steam drain pipe structure of the waste heat power generation boiler according to claim 3, characterized in that: the cover is in stainless steel hose (2) both ends ring channel (9) have been seted up on ring flange (4), the cross-section of ring channel (9) is the trapezium structure, just the notch width of ring channel (9) is less than the tank bottom width of ring channel (9), be provided with first sealed pad (8) in ring channel (9), first sealed pad (8) part is located the ring channel (9) outside.

5. The main steam drain pipe structure of the waste heat power generation boiler according to claim 4, characterized in that: the stainless steel hose (2) is made of high-temperature-resistant materials, and a heat insulation layer is further arranged on the surface of the stainless steel hose (2).

6. The main steam drain pipe structure of the waste heat power generation boiler according to claim 5, characterized in that: and a second sealing gasket (12) is also arranged in the annular groove (10).

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