CN216588741U - Steam inlet mechanism for low-pressure coil way valve - Google Patents
Steam inlet mechanism for low-pressure coil way valve Download PDFInfo
- Publication number
- CN216588741U CN216588741U CN202122171721.7U CN202122171721U CN216588741U CN 216588741 U CN216588741 U CN 216588741U CN 202122171721 U CN202122171721 U CN 202122171721U CN 216588741 U CN216588741 U CN 216588741U
- Authority
- CN
- China
- Prior art keywords
- butt joint
- steam inlet
- pipeline
- inlet pipe
- steam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model relates to the technical field of valves, in particular to a steam inlet mechanism for a low-pressure coil valve, which comprises a hard butt joint mechanism and a buffer butt joint mechanism, wherein the hard butt joint mechanism is used for being connected with a steam inlet pipe, the buffer butt joint mechanism is used for being connected with a conveying pipeline, and the other end of the hard butt joint mechanism is connected with the other end of the buffer butt joint mechanism; the hard butt joint mechanism comprises a butt joint pipeline, and positioning flanges are arranged on the outer wall of the end part of the butt joint pipeline and the outer wall of the end part of the steam inlet pipe; the inner wall of the end part of the butt joint pipeline is provided with a circular truncated cone-shaped flow guide sleeve; the steam inlet pipe is simple in structure, and the steam can stably and efficiently enter the steam inlet pipe through the conveying pipeline, so that impurities in the steam can be filtered and cleaned, and the safety of the steam during conveying is improved.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a steam inlet mechanism for a low-pressure coil way valve.
Background
The bypass system device is an important auxiliary device on a steam turbine of a thermal power generating unit, the reliability of the bypass system device has great influence on the safe and economic operation of a power plant, the low-pressure bypass is a low-pressure cylinder bypass in the steam turbine, is positioned between a hot section pipe at the outlet of a reheater and a condenser, receives the hot section steam, leads one path of the hot section steam out of a hot section pipeline in front of an inlet medium-pressure combined valve, and divides the hot section steam into two paths to enter the condenser through a low-pressure bypass valve; the low-pressure bypass valve can reduce the pressure and the temperature of steam generated by the boiler reheater and directly send the steam into the heat condenser, so that the unbalance of the steam consumption among the coordinated boilers is ensured, the starting and load characteristics of the unit are improved, and the safety and the flexibility of the unit operation are improved. As important auxiliary equipment of the unit, the advantages and disadvantages of the low-pressure bypass valve directly affect the safety and the economical efficiency of the unit, and have important significance on the starting and the operation of the unit.
The stability of the steam inlet end of the existing bypass valve is poor, and the pipeline of the steam inlet end is easy to be damaged, so that inconvenience exists in use.
Disclosure of Invention
The utility model aims to provide a steam inlet mechanism for a low-pressure coil valve.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the steam inlet mechanism for the low-pressure coil valve is arranged at the position of a steam inlet pipe of the bypass valve and is used for being connected with an external conveying pipeline, the steam inlet mechanism comprises a hard butt joint mechanism used for being connected with the steam inlet pipe and a buffer butt joint mechanism used for being connected with the conveying pipeline, and the other end of the hard butt joint mechanism is connected with the other end of the buffer butt joint mechanism;
the hard butt joint mechanism comprises a butt joint pipeline, positioning flanges are arranged on the outer wall of the end part of the butt joint pipeline and the outer wall of the end part of the steam inlet pipe, and the end part of the butt joint pipeline is in sealed butt joint with the end part of the steam inlet pipe through a fastening assembly; the inner wall of the end part of the butt joint pipeline is provided with a circular truncated cone-shaped guide sleeve, and the end part of the guide sleeve extends into the steam inlet pipe;
buffering docking mechanism includes corrugated metal pipe, filtering component and sets up the clamping ring at corrugated metal pipe's both ends, and a clamping ring and the other end sealing connection who docks the pipeline, another clamping ring and pipeline's tip sealing connection, and two be equipped with the elasticity tensioning assembly between the clamping ring, filtering component sets up corrugated metal pipe's inside.
Preferably, an annular sealing fixture block is arranged on the end face of the end part of the steam inlet pipe, an annular groove corresponding to the annular sealing fixture block is arranged on the end face of the end part of the butt joint pipeline, a sealing gasket is bonded on the inner wall of the annular groove, and the annular sealing fixture block extends into the annular groove and is in tight contact with the sealing gasket.
Preferably, a rubber sealing ring is arranged at the contact part of the end part of the steam inlet pipe and the outer wall of the flow guide sleeve.
Preferably, the fastening assembly comprises a bolt, a nut, an elastic assembly, a pressing plate and a cushion block, the bolt sequentially penetrates through the two positioning flanges, the pressing plate is sleeved on the bolt and is in contact with the outer side wall of one of the positioning flanges, the elastic assembly and the cushion block are sequentially sleeved on the bolt, the nut is fastened at the end of the bolt in a threaded manner and is in close contact with the cushion block, one end of the elastic assembly is connected with the cushion block, and the other end of the elastic assembly is connected with the pressing plate.
Preferably, the outer walls of the two pressure rings are provided with sealing rings, and the sealing rings are in close contact with annular grooves respectively arranged on the end faces of the butt joint pipeline and the conveying pipeline.
Preferably, the elastic tensioning assembly comprises a telescopic guide post and a tensioning spring, one end of the telescopic guide post is connected with the side end face of one of the compression rings, the other end of the telescopic guide post is connected with the side end face of the other compression ring, and the tensioning spring is sleeved on the telescopic guide post and the end parts of the tensioning spring are respectively connected with the corresponding compression rings.
Preferably, the outer side end face of the compression ring is respectively provided with a threaded rod, and the threaded rod penetrates through positioning blocks arranged on the outer walls of the steam inlet pipe and the conveying pipeline and is locked through a locking nut.
Has the advantages that: when the steam inlet pipe is used, the steam inlet pipe is arranged on a steam inlet pipe of a bypass valve and used for conveying steam, when the steam is conveyed, the steam sequentially passes through a conveying pipeline, a metal corrugated pipe and a butt joint pipeline and enters the bypass valve through the steam inlet pipe under the action of a flow guide sleeve, and when the steam passes through the metal corrugated pipe, the steam is filtered through a filtering component arranged in the metal corrugated pipe, so that impurities mixed in the steam are stopped on the filtering component, the impurities are prevented from entering the bypass valve, the steam enters the butt joint pipeline through the filtering component, and the flow guide sleeve is arranged in the butt joint pipeline, so that the steam can smoothly enter the steam inlet pipe under the action of the flow guide sleeve;
in the utility model, the metal corrugated pipe is tightly and hermetically arranged between the butt joint pipeline and the conveying pipeline through the press rings arranged at the two end parts, so that the assembly and the disassembly are convenient, an expanded interval is provided for steam during conveying through the arrangement of the metal corrugated pipe, the safety of the steam during conveying is improved, the filtering assembly is arranged in the metal corrugated pipe, the steam is conveniently filtered, and the filtering assembly is also conveniently cleaned and replaced;
the butt joint pipeline is connected with the steam inlet pipe through the fastening assembly, an annular sealing clamping block is arranged on the end face of the end part of the steam inlet pipe, an annular groove corresponding to the annular sealing clamping block is arranged on the end face of the end part of the butt joint pipeline, a sealing gasket is bonded on the inner wall of the annular groove, and the annular sealing clamping block extends into the annular groove and is in tight contact with the sealing gasket, so that the connection stability is high, and the sealing performance is good;
the steam inlet pipe is simple in structure, and the steam can stably and efficiently enter the steam inlet pipe through the conveying pipeline, so that impurities in the steam can be filtered and cleaned, and the safety of the steam in the conveying process is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments of the present invention are briefly described below.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is an enlarged view at B of FIG. 1;
FIG. 4 is an enlarged view at C of FIG. 1;
FIG. 5 is an enlarged view taken at D in FIG. 1;
FIG. 6 is an enlarged view at E in FIG. 1;
FIG. 7 is a schematic view of a bypass valve;
wherein: 1-steam inlet pipe, 2-pressing plate, 3-elastic component, 4-cushion block, 5-nut, 6-butt joint pipe, 7-annular sealing clamping block, 8-annular groove, 9-sealing gasket, 10-flow guide sleeve, 11-conveying pipe, 12-annular groove, 13-metal corrugated pipe, 14-filtering component, 15-pressing ring, 16-sealing ring, 17-telescopic guide column, 18-tension spring, 19-threaded rod and 20-locking nut.
Detailed Description
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some components of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product.
Referring to fig. 1 to 7, the steam inlet mechanism for the low-pressure coil valve is installed at a steam inlet pipe 1 of the bypass valve and is used for being connected with an external conveying pipeline 11, the steam inlet mechanism comprises a hard butt joint mechanism used for being connected with the steam inlet pipe 1 and a buffer butt joint mechanism used for being connected with the conveying pipeline 11, and the other end of the hard butt joint mechanism is connected with the other end of the buffer butt joint mechanism;
the hard butt joint mechanism comprises a butt joint pipeline 6, positioning flanges are arranged on the outer wall of the end part of the butt joint pipeline 6 and the outer wall of the end part of the steam inlet pipe 1, and the end part of the butt joint pipeline 6 is in sealed butt joint with the end part of the steam inlet pipe 1 through a fastening assembly; the inner wall of the end part of the butt joint pipeline 6 is provided with a circular truncated cone-shaped guide sleeve 10, and the end part of the guide sleeve 10 extends into the steam inlet pipe 1;
buffering docking mechanism includes corrugated metal pipe 13, filter assembly 14 and sets up the clamping ring 15 at corrugated metal pipe 13's both ends, and a clamping ring 15 and the other end sealing connection of butt joint pipeline 6, another clamping ring 15 and pipeline 11's end sealing connection, and two be equipped with the elasticity tensioning assembly between clamping ring 15, filter assembly 14 sets up corrugated metal pipe 13's inside.
In this embodiment, an annular sealing fixture block 7 is disposed on an end face of an end portion of the steam inlet pipe 1, an annular groove 8 corresponding to the annular sealing fixture block 7 is disposed on an end face of an end portion of the butt joint pipe 6, a sealing gasket 9 is bonded to an inner wall of the annular groove 8, and the annular sealing fixture block 7 extends into the annular groove 8 and is in tight contact with the sealing gasket 9.
In this embodiment, a rubber sealing ring is disposed at a contact portion between an end of the steam inlet pipe 1 and an outer wall of the flow guide sleeve 10, so as to improve sealing performance.
In this embodiment, fastening components includes bolt, nut 5, elastic component 3, clamp plate 2 and cushion 4, the bolt passes two locating flange in proper order, 2 covers on the bolt of clamp plate, and contacts with the lateral wall of one of them locating flange, and elastic component 3 overlaps on the bolt with cushion 4 in proper order, and 5 threaded fastening of nut is at the tip of bolt to with cushion 4 in close contact with, 3 one end of elastic component is connected with cushion 4, and the other end is connected with clamp plate 2, improves the stability of location, can not lead to nut 5 not hard up because of undulant.
In this embodiment, the outer walls of the two pressure rings 15 are provided with sealing rings 16, and the sealing rings 16 are in close contact with the annular grooves 12 respectively arranged on the end surfaces of the butt-joint pipeline 6 and the conveying pipeline 11, so that the sealing performance after connection is improved.
In this embodiment, the elastic tensioning assembly includes a telescopic guide post 17 and a tensioning spring 18, one end of the telescopic guide post 17 is connected to a side end face of one of the compression rings 15, the other end of the telescopic guide post is connected to a side end face of the other compression ring 15, and the tensioning spring 18 is sleeved on the telescopic guide post 17, and ends of the tensioning spring are respectively connected to corresponding compression rings 15, so as to ensure connection stability and sealing performance.
In this embodiment, the outer end faces of the pressing rings 15 are respectively provided with a threaded rod 19, and the threaded rods 19 penetrate through positioning blocks arranged on the outer walls of the steam inlet pipe 1 and the conveying pipeline 11 and are locked by locking nuts 20.
When the steam inlet valve is used, the steam inlet valve is arranged on a steam inlet pipe 1 of a bypass valve and used for conveying steam, when the steam is conveyed, the steam sequentially passes through a conveying pipeline 11, a metal corrugated pipe 13 and a butt joint pipeline 6 and enters the bypass valve through the steam inlet pipe 1 under the action of a flow guide sleeve 10, when the steam passes through the metal corrugated pipe 13, the steam is filtered through a filtering component 14 arranged in the metal corrugated pipe 13, so that impurities mixed in the steam are stopped on the filtering component 14, the impurities are prevented from entering the bypass valve, the steam enters the butt joint pipeline 6 through the filtering component 14, and as the flow guide sleeve 10 is arranged in the butt joint pipeline 6, the steam can smoothly enter the steam inlet pipe 1 under the action of the flow guide sleeve 10;
in the utility model, the metal corrugated pipe 13 is tightly and hermetically arranged between the butt joint pipe 6 and the conveying pipe 11 through the pressing rings 15 arranged at the two end parts, so that the assembly and the disassembly are convenient, the metal corrugated pipe 13 provides an expansion interval for the steam during the transportation, improves the safety of the steam during the transportation, and a filtering assembly 14 is provided inside the metal bellows 13, which facilitates the filtering of the steam, and also facilitates the cleaning and replacement of the filtering assembly 14, and further, by providing an elastic tension assembly, even if the compression ring 15 and the end parts of the butt joint pipeline 6 and the conveying pipeline 11 are loosened, the tightness of the metal corrugated pipe 13 after connection can be ensured under the action of the elastic tensioning assembly, the elastic tensioning assembly is arranged, so that the clamping ring 15, the butt joint pipeline 6 and the conveying pipeline 11 can be positioned and connected more tightly;
the butt joint pipeline 6 is connected with the steam inlet pipe 1 through a fastening assembly, an annular sealing clamping block 7 is arranged on the end face of the end part of the steam inlet pipe 1, an annular groove 8 corresponding to the annular sealing clamping block 7 is arranged on the end face of the end part of the butt joint pipeline 6, a sealing gasket 9 is bonded on the inner wall of the annular groove 8, and the annular sealing clamping block 7 extends into the annular groove 8 and is in tight contact with the sealing gasket 9, so that the connection stability is high, and the sealing performance is good;
the steam inlet pipe is simple in structure, and the steam can stably and efficiently enter the steam inlet pipe through the conveying pipeline, so that impurities in the steam can be filtered and cleaned, and the safety of the steam in the conveying process is improved.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A steam inlet mechanism for a low-pressure coil valve is arranged at the position of a steam inlet pipe of a bypass valve and is used for being connected with an external conveying pipeline (11), and is characterized in that the steam inlet mechanism comprises a hard butt joint mechanism used for being connected with the steam inlet pipe (1) and a buffer butt joint mechanism used for being connected with the conveying pipeline (11), and the other end of the hard butt joint mechanism is connected with the other end of the buffer butt joint mechanism;
the hard butt joint mechanism comprises a butt joint pipeline (6), positioning flanges are arranged on the outer wall of the end part of the butt joint pipeline (6) and the outer wall of the end part of the steam inlet pipe (1), and the end part of the butt joint pipeline is in sealed butt joint with the end part of the steam inlet pipe (1) through a fastening assembly; the inner wall of the end part of the butt joint pipeline (6) is provided with a circular truncated cone-shaped guide sleeve (10), and the end part of the guide sleeve (10) extends into the steam inlet pipe (1);
buffering docking mechanism includes corrugated metal pipe (13), filtering component (14) and clamping ring (15) of setting at corrugated metal pipe's (13) both ends, and another clamping ring (15) and the other end sealing connection of butt joint pipeline (6), another clamping ring (15) and the tip sealing connection of pipeline (11), filtering component (14) set up the inside of corrugated metal pipe (13).
2. The steam inlet mechanism for the low-pressure coil valve as claimed in claim 1, wherein an annular sealing block (7) is disposed on an end face of an end portion of the steam inlet pipe (1), an annular groove (8) corresponding to the annular sealing block (7) is disposed on an end face of an end portion of the butt joint pipe (6), a sealing gasket (9) is bonded to an inner wall of the annular groove (8), and the annular sealing block (7) extends into the annular groove (8) and is in close contact with the sealing gasket (9).
3. The steam inlet mechanism for the low-pressure coil valve as claimed in claim 2, wherein a rubber sealing ring is arranged at a contact part of the end part of the steam inlet pipe (1) and the outer wall of the flow guide sleeve (10).
4. The steam inlet mechanism for the low-pressure coil valve is characterized in that the fastening component comprises a bolt, a nut (5), an elastic component (3), a pressure plate (2) and a cushion block (4), the bolt sequentially penetrates through two positioning flanges, the pressure plate (2) is sleeved on the bolt and is in contact with the outer side wall of one of the positioning flanges, the elastic component (3) and the cushion block (4) are sequentially sleeved on the bolt, the nut (5) is fastened at the end of the bolt in a threaded manner and is in close contact with the cushion block (4), one end of the elastic component (3) is connected with the cushion block (4), and the other end of the elastic component is connected with the pressure plate (2).
5. The steam inlet mechanism for the low-pressure coil valve as claimed in claim 1, wherein the outer walls of the two pressure rings (15) are provided with sealing rings (16), and the sealing rings (16) are tightly contacted with annular grooves (12) respectively arranged on the end surfaces of the butt joint pipeline and the conveying pipeline (11).
6. The steam inlet mechanism for the low-pressure coil valve is characterized in that the elastic tensioning assembly comprises a telescopic guide post (17) and a tensioning spring (18), one end of the telescopic guide post (17) is connected with the side end face of one of the compression rings (15), the other end of the telescopic guide post is connected with the side end face of the other compression ring (15), the tensioning spring (18) is sleeved on the telescopic guide post (17), and the end parts of the tensioning spring are respectively connected with the corresponding compression rings (15).
7. The steam inlet mechanism for the low-pressure coil valve as claimed in claim 6, wherein the outer end faces of the pressure ring (15) are respectively provided with a threaded rod (19), and the threaded rods (19) penetrate through positioning blocks arranged on the outer walls of the steam inlet pipe (1) and the conveying pipeline (11) and are locked by locking nuts (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122171721.7U CN216588741U (en) | 2021-09-08 | 2021-09-08 | Steam inlet mechanism for low-pressure coil way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122171721.7U CN216588741U (en) | 2021-09-08 | 2021-09-08 | Steam inlet mechanism for low-pressure coil way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216588741U true CN216588741U (en) | 2022-05-24 |
Family
ID=81636220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122171721.7U Active CN216588741U (en) | 2021-09-08 | 2021-09-08 | Steam inlet mechanism for low-pressure coil way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216588741U (en) |
-
2021
- 2021-09-08 CN CN202122171721.7U patent/CN216588741U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105910474B (en) | More tubular sheet heat exchangers | |
| CN216588741U (en) | Steam inlet mechanism for low-pressure coil way valve | |
| CN206972498U (en) | A kind of pump with high pressure self-locking type flange | |
| CN209041164U (en) | Steam turbine condensate pump self sealing structure | |
| JP2008014495A (en) | Quick coupling for threaded fitting | |
| CN209100855U (en) | A kind of plug-in stop pipe fitting joint | |
| CN201925631U (en) | Stainless steel hard-seal pipe connector | |
| CN112746873B (en) | High-pressure module for supercritical 350MW three-cylinder steam turbine | |
| CN207178158U (en) | A kind of compressor with high pressure self-locking type flange | |
| CN207961856U (en) | A kind of quick coupling device suitable on graden machine | |
| CN209146584U (en) | Reinforcing formula non-metal expansion joint | |
| CN206973105U (en) | A kind of instrument with high pressure self-locking type flange | |
| CN208311734U (en) | A kind of fluid circuit changing-over head | |
| CN206929468U (en) | Easy-to-dismount fast connector for pipeline | |
| CN102589812B (en) | Two-segment type water-pressure sealed bulging piston for large-caliber collecting box | |
| CN211953341U (en) | Novel thermostatic expansion valve | |
| CN217081781U (en) | Stainless steel flange convenient to connect | |
| CN216143380U (en) | Central support for vacuum connection | |
| CN219796534U (en) | Expansion elbow for steam pipeline | |
| CN215171640U (en) | Flange structure suitable for laser welding | |
| CN214120010U (en) | Water supply device for desuperheater | |
| CN214209467U (en) | Novel process condensate recovery system | |
| CN213776707U (en) | VOCs high temperature companion's heat pipe | |
| CN219509822U (en) | Gas-liquid separation buffer tank for air inlet of vacuum pump unit | |
| CN215488204U (en) | Split flange |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |