CN113738882B - Double-throttle regulating valve - Google Patents
Double-throttle regulating valve Download PDFInfo
- Publication number
- CN113738882B CN113738882B CN202111011346.8A CN202111011346A CN113738882B CN 113738882 B CN113738882 B CN 113738882B CN 202111011346 A CN202111011346 A CN 202111011346A CN 113738882 B CN113738882 B CN 113738882B
- Authority
- CN
- China
- Prior art keywords
- valve
- head
- seat
- rod
- chamber
- 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
- 230000001105 regulatory effect Effects 0.000 title abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 230000009977 dual effect Effects 0.000 claims 4
- 238000005299 abrasion Methods 0.000 abstract description 5
- 238000000605 extraction Methods 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K39/00—Devices for relieving the pressure on the sealing faces
- F16K39/02—Devices for relieving the pressure on the sealing faces for lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Turbines (AREA)
- Lift Valve (AREA)
Abstract
The invention aims to provide a double-throttle regulating valve, which comprises a valve shell, a valve rod, a guide flange, a valve head and a valve seat, wherein the guide flange is positioned at the upper part of the valve shell, the valve rod, the valve head and the valve seat are positioned in the valve shell, the head part of the valve rod is positioned in the guide flange, the middle part of the valve rod is positioned in the valve head, the bottom part of the valve rod is positioned in the valve seat, the lower part of the valve head is positioned in the valve seat and can slide up and down along the inner wall of the valve seat, an air suction channel is arranged in the guide flange, a groove for placing a stop pin is arranged in the valve head, and the part of the valve rod positioned in the valve head is provided with the stop pin which is positioned in the groove and can move up and down along the groove. The invention is a double-throttling regulating valve, the first-path valve head and the valve seat are internally regulated by adopting symmetrical variable-section molded lines, when the valve is opened, the pressure difference between the front valve and the rear valve of the first-path throttling valve is not large, the flow velocity is not fast, the abrasion of the sealing surface of the spherical valve is reduced, the second-path throttling adopts a window throttling mode, the flow of the adjustable area is regulated through a window, and the stability of the valve is ensured.
Description
Technical Field
The invention relates to a valve, in particular to a ship turbine valve.
Background
Vibration reduction, noise reduction and valve sealing are two problems encountered by the current ship turbine valve, and the potential safety hazard of a unit is caused by valve leakage due to too large vibration noise and poor valve closing.
Disclosure of Invention
The invention aims to provide a double-throttle regulating valve which can avoid abrasion of a sealing working surface and enable main throttling to occur in a window.
The purpose of the invention is realized in the following way:
The invention relates to a double-throttling regulating valve, which is characterized in that: including valve casing, valve rod, direction flange, valve head, disk seat, the direction flange is located valve casing upper portion, and valve rod, valve head, disk seat are located valve casing, and the head of valve rod is located the direction normal, and the middle part of valve rod is located the valve head, and the bottom of valve rod is located the disk seat, and the lower part of valve head is located the disk seat and can slide from top to bottom along the disk seat inner wall, sets up the passageway of bleeding in the direction flange, and the valve head is inside to set up the groove of placing the stop pin, and the valve rod is located the part of valve head and sets up the stop pin, and the stop pin is located the inslot and can follow the groove and reciprocate.
The invention may further include:
1. the guide flange is provided with an annular groove for placing the bushing locking plate, the part of the valve rod positioned in the guide flange is sleeved with a valve rod bushing, and the valve rod bushing is fixed with the guide flange through the bushing locking plate.
2. A limiting seat is arranged between the valve rod head and the middle part and the valve head, the limiting seat is fixed on the valve head, and a limiting protrusion matched with the limiting seat is arranged between the valve rod head and the middle part.
3. The middle part of the valve rod and the valve head are provided with a pre-opening valve head, the pre-opening valve head is fixed on the valve head, the part of the pre-opening valve head above the groove and the part below the groove are provided with vent holes, the vent holes are communicated with the groove, the top of the pre-opening valve head is a pre-opening valve sealing surface, and when the valve rod is in a closed state, the pre-opening valve sealing surface is matched with the end face of the valve rod above the pre-opening valve sealing surface to realize sealing.
4. When the valve rod is in a closed state, the valve head and the valve seat are sealed through a sealing line.
5. The valve housing is provided with a valve seat locking plate, and the valve seat is fixed with the valve housing through the valve seat locking plate.
6. A first chamber is formed among the guide flange, the valve head and the valve rod, a second chamber is formed among the valve head, the valve shell and the valve seat, a third chamber is formed among the valve head and the valve rod, a pre-opened vent hole is arranged on the valve head where the third chamber is positioned, a fourth chamber is formed among the valve seat and the valve head, a fifth chamber is formed among the valve seat and the valve shell, a valve head orifice is arranged on the valve head, and a valve seat orifice is arranged on the valve seat; when the valve rod is closed, steam enters the first chamber from the second chamber, and the valve head is attached to the valve seat by the pressure of the steam. After the valve rod is opened, the valve head of the pre-opening valve is opened, the valve rod moves upwards and is limited by the limiting seat to perform pre-opening travel, steam is in the second chamber and flows into the fifth chamber through the pre-opening vent hole, the third chamber and the vent hole of the valve head of the pre-opening valve, the valve rod drives the valve head to open upwards, and the steam is in the second chamber and flows into the fifth chamber through the throttle hole of the valve head, the fourth chamber and the throttle hole of the valve seat.
The invention has the advantages that: the invention is a double-throttling regulating valve, the first-path valve head and the valve seat are internally regulated by adopting symmetrical variable-section molded lines, when the valve is opened, the pressure difference between the front valve and the rear valve of the first-path throttling valve is not large, the flow velocity is not fast, the abrasion of the sealing surface of the spherical valve is reduced, the second-path throttling adopts a window throttling mode, the flow of the adjustable area is regulated through a window, and the stability of the valve is ensured.
Drawings
FIG. 1 is a schematic view of a closed state structure of the present invention;
Fig. 2 is a schematic diagram of the fully open state structure of the present invention.
Detailed Description
The invention is described in more detail below, by way of example, with reference to the accompanying drawings:
1-2, the invention designs a double-throttling regulating valve, wherein the first throttling adopts a spherical valve, the valve head 7 and the valve seat 10 are internally regulated by adopting symmetrical variable cross section molded lines, when the valve is opened, the pressure difference between the front valve and the rear valve of the first throttling valve is not large, the flow speed is not fast, the abrasion of the sealing surface of the spherical valve is reduced, the second throttling adopts a window throttling mode, the flow of the adjustable area is regulated through a window, and the stability of the valve is ensured;
According to the invention, the lifting force of the valve is reduced through the load relief valve, and the guide rod is arranged on the valve rod, so that the coaxiality between the valve rod and the valve seat is ensured.
The invention discloses a double-throttling regulating valve, which comprises a valve shell, a valve rod 11, a guide flange 3, a valve head 7 and a valve seat 10, wherein the guide flange 3 is positioned at the upper part of the valve shell, the valve rod 11, the valve head 7 and the valve seat 10 are positioned in the valve shell, the head part of the valve rod 11 is positioned in the guide flange 3, the middle part of the valve rod 11 is positioned in the valve head 7, the bottom part of the valve rod 11 is positioned in the valve seat 10, the lower part of the valve head 7 is positioned in the valve seat 10 and can slide up and down along the inner wall of the valve seat 10, an air exhaust channel is arranged in the guide flange 3, a groove for placing a stop pin 8 is arranged in the valve head 7, a stop pin 8 is arranged at the part of the valve head 7, and the stop pin 8 is positioned in the groove and can move up and down along the groove.
The guide flange 3 is provided with an annular groove for placing the bushing locking plate 2, the valve rod bushing 1 is fixed with the guide flange 3 through the bushing locking plate 2, the guide flange 3 is provided with a steam extraction opening A which is communicated with a steam sealing groove and a steam extraction opening B of the valve rod bushing 1, the valve rod 11 is provided with a pre-opening valve sealing surface G and a rotation stop pin hole which is matched with the rotation stop pin 8 according to the figure 1, the valve head 7 is provided with a threaded hole for fixing a limit seat 5, a pre-opening vent hole F, a valve head orifice L, a rectangular groove for placing the rotation stop pin 8 and a threaded hole connected with the pre-opening valve head 6, the limit seat 5 is fixed with the valve head 7 through an inner hexagon bolt 4, the valve seat 10 is fixed with a valve shell through a valve seat locking plate 9, the valve seat 10 is provided with a valve seat orifice N and a guide hole, and the pre-opening valve head 6 is provided with the pre-opening valve sealing surface G and the vent hole.
When the double throttle valve is closed, as shown in figure 1, steam enters the whole surface of a valve head of a chamber C from a chamber D and is fully pressed, so that the valve head 7 is tightly attached to a valve seat 10, when the valve is opened, a valve rod 11 moves upwards, a pre-opening valve is opened, a limit seat 5 limits the pre-opening stroke of the valve rod, and at the moment, after the steam enters a chamber E from a pre-opening vent F in the chamber D, the vent hole of a pre-opening valve head 6 and the vent hole H on the valve head 7, the steam is communicated with the gas before and after the valve; the valve rod continues to move upwards to drive the valve head 7 to start to open, at the moment, steam enters the nozzle from the valve head orifice L, the chamber M, the valve seat orifice N and the chamber O in the chamber D, the valve is effectively relieved through the valve head orifice L and the valve seat orifice N, and secondly, very small steam speed can be obtained, so that abrasion of a sealing working surface is avoided, and main throttling occurs in a window.
When the valve head is closed, the first throttle valve and the valve seat 10 are sealed through a sealing line, the second throttle valve is sealed through the window oversealing degree, and the tightness of the valve when the valve is closed is ensured through the two seals; when the valve is opened, the front valve and the rear valve of the first throttle valve have small pressure difference, the steam flow rate is small, the impact on the first seal is reduced, the second throttle valve mainly has a certain impact on the lower edge of the window, and the sleeve overseal sealing influence is not influenced.
The valve head 7 and the valve seat 10 are adjusted by adopting the adjustable area of the variable cross section molded line, so that the adjusting performance is improved, and the throttle noise of the valve is reduced. The driving mode of the valve head 7 can adopt manual, motor driving, hydraulic driving and other modes for lifting the valve head to realize manual control or remote control; the connection with the driving mechanism is realized by changing the connection mode of the flange 3 and the valve head 7.
Claims (5)
1. Double throttle governing valve, characterized by: the valve comprises a valve shell, a valve rod, a guide flange, a valve head and a valve seat, wherein the guide flange is positioned at the upper part of the valve shell, the valve rod, the valve head and the valve seat are positioned in the valve shell, the head part of the valve rod is positioned in the guide flange, the middle part of the valve rod is positioned in the valve head, the bottom part of the valve rod is positioned in the valve seat, the lower part of the valve head is positioned in the valve seat and can slide up and down along the inner wall of the valve seat, an air suction channel is arranged in the guide flange, a groove for placing a stop pin is arranged in the valve head, and the part of the valve rod positioned in the valve head is provided with the stop pin which is positioned in the groove and can move up and down along the groove;
A pre-opening valve head is arranged between the middle part of the valve rod and the valve head, the pre-opening valve head is fixed on the valve head, the part of the pre-opening valve head above the groove and the part below the groove are provided with vent holes, the vent holes are communicated with the groove, the top of the pre-opening valve head is a pre-opening valve sealing surface, and the pre-opening valve sealing surface is matched with the end face of the valve rod above the pre-opening valve sealing surface to realize sealing when the valve rod is in a closed state;
A first chamber is formed among the guide flange, the valve head and the valve rod, a second chamber is formed among the valve head, the valve shell and the valve seat, a third chamber is formed among the valve head and the valve rod, a pre-opened vent hole is arranged on the valve head where the third chamber is positioned, a fourth chamber is formed among the valve seat and the valve head, a fifth chamber is formed among the valve seat and the valve shell, a valve head orifice is arranged on the valve head, and a valve seat orifice is arranged on the valve seat; when the valve rod is closed, steam enters the first chamber from the second chamber, and the pressure of the steam enables the valve head to be attached to the valve seat; after the valve rod is opened, the valve head of the pre-opening valve is opened, the valve rod moves upwards and is limited by the limiting seat to perform pre-opening travel, steam in the second chamber flows through the pre-opening vent hole, the third chamber and the vent hole of the valve head of the pre-opening valve, the valve rod drives the valve head to open upwards, and the steam in the second chamber flows into the fifth chamber through the throttle hole of the valve head, the fourth chamber and the throttle hole of the valve seat;
The valve head and the valve seat are internally adjusted by adopting the adjustable area of the symmetrical variable cross section molded line.
2. The dual throttle regulator valve according to claim 1, wherein: the guide flange is provided with an annular groove for placing the bushing locking plate, the part of the valve rod positioned in the guide flange is sleeved with a valve rod bushing, and the valve rod bushing is fixed with the guide flange through the bushing locking plate.
3. The dual throttle regulator valve according to claim 1, wherein: a limiting seat is arranged between the valve rod head and the middle part and the valve head, the limiting seat is fixed on the valve head, and a limiting protrusion matched with the limiting seat is arranged between the valve rod head and the middle part.
4. The dual throttle regulator valve according to claim 1, wherein: when the valve rod is in a closed state, the valve head and the valve seat are sealed through a sealing line.
5. The dual throttle regulator valve according to claim 1, wherein: the valve housing is provided with a valve seat locking plate, and the valve seat is fixed with the valve housing through the valve seat locking plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111011346.8A CN113738882B (en) | 2021-08-31 | 2021-08-31 | Double-throttle regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111011346.8A CN113738882B (en) | 2021-08-31 | 2021-08-31 | Double-throttle regulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113738882A CN113738882A (en) | 2021-12-03 |
| CN113738882B true CN113738882B (en) | 2024-07-16 |
Family
ID=78734162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111011346.8A Active CN113738882B (en) | 2021-08-31 | 2021-08-31 | Double-throttle regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113738882B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483965A (en) * | 2021-12-31 | 2022-05-13 | 北京航天益森风洞工程技术有限公司 | Valve gate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216200531U (en) * | 2021-08-31 | 2022-04-05 | 中国船舶重工集团公司第七0三研究所 | Double-throttle regulating valve |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3231222A1 (en) * | 1982-08-21 | 1984-02-23 | Centra-Bürkle GmbH & Co, 7036 Schönaich | Valve |
| AU6547396A (en) * | 1996-07-22 | 1998-02-10 | Samuel N. Lombardo | Throttling and diffusing dispensing valve |
| NO316090B1 (en) * | 2002-03-21 | 2003-12-08 | Nat Oilwell Norway As | Device at piston machine valve such as pump and compressor |
| DE102010001557A1 (en) * | 2010-02-03 | 2011-08-04 | Voith Patent GmbH, 89522 | Valve for regulating a fluid flow |
| CN203442175U (en) * | 2013-08-29 | 2014-02-19 | 西安秦申特种调节阀有限责任公司 | High-pressure heater emergency drain regulating valve |
| JP6474996B2 (en) * | 2014-11-13 | 2019-02-27 | トヨタ自動車株式会社 | Pressure reducing valve and gas supply device |
| CA2939523C (en) * | 2015-08-21 | 2022-05-03 | Master Flo Valve Inc. | Cage valve with erosion detection |
| CN205780911U (en) * | 2016-06-30 | 2016-12-07 | 东方电气集团东方汽轮机有限公司 | A kind of turbine governor valve |
| CN206874825U (en) * | 2017-06-16 | 2018-01-12 | 哈尔滨松林电站设备有限公司 | Protection against erosion bypass valve |
-
2021
- 2021-08-31 CN CN202111011346.8A patent/CN113738882B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216200531U (en) * | 2021-08-31 | 2022-04-05 | 中国船舶重工集团公司第七0三研究所 | Double-throttle regulating valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113738882A (en) | 2021-12-03 |
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