CN113062778A - Steam turbine air inlet valve - Google Patents
Steam turbine air inlet valve Download PDFInfo
- Publication number
- CN113062778A CN113062778A CN202110303371.7A CN202110303371A CN113062778A CN 113062778 A CN113062778 A CN 113062778A CN 202110303371 A CN202110303371 A CN 202110303371A CN 113062778 A CN113062778 A CN 113062778A
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- China
- Prior art keywords
- valve
- main valve
- locking
- main
- steam turbine
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/105—Final actuators by passing part of the fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/20—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted
- F01D17/22—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical
- F01D17/24—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical electrical
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
Abstract
The invention discloses a steam turbine air inlet valve, which comprises: the air inlet and the air outlet are arranged on the shell; the front valve component is arranged on the shell and is arranged between the air inlet and the air outlet; the main valve component is arranged on the shell and arranged between the air inlet and the air outlet; the main valve component is connected with the front valve component in series, the front valve serves as a flow valve through the synergistic effect of the two valve bodies, the flow can be adjusted, the main valve serves as an auxiliary valve, the emergency stop can be achieved, and the safe operation of the steam turbine is guaranteed.
Description
Technical Field
The invention belongs to the technical field of steam turbines, and particularly relates to a steam turbine air inlet valve.
Background
In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:
in the prior art, the air inlet valve of the steam turbine is only provided with one valve body, so that the working reliability is low.
Disclosure of Invention
The invention aims to solve the technical problem of providing a steam turbine air inlet valve which can be used for emergency shutdown by the synergistic effect of two valve bodies, wherein a front valve is used as a flow valve and can regulate the flow, and a main valve is used as an auxiliary valve.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a steam turbine inlet valve having:
the air conditioner comprises a shell, wherein an air inlet and an air outlet are formed in the shell;
a front valve assembly disposed on the housing, the front valve assembly disposed between the air inlet and the air outlet;
a main valve assembly disposed on the housing, the main valve assembly being disposed between the air inlet and the air outlet; the main valve assembly is in series with the front valve assembly.
The main valve component is arranged along the up-down direction, and the front valve component is crossed with the main valve component.
The main valve assembly has:
a main valve seat mounted on the housing;
the main valve rod extends into the shell and can move in the shell, and the main valve rod can open or close a main valve channel of the shell through movement;
and the main valve driving mechanism is arranged on the main valve support and can drive the main valve rod to move.
The main valve driving mechanism is provided with a main valve motor, a main valve rocker arm and a main valve connecting rod, the main valve motor is installed on the main valve support, the first end of the main valve rocker arm is fixedly connected with a rotating shaft of the main valve motor, the second end of the main valve rocker arm is hinged with the first end of the main valve connecting rod, and the second end of the main valve connecting rod is hinged with the main valve rod.
Still be equipped with locking mechanism on the main valve subassembly, locking mechanism has:
the sleeve is fixedly arranged on the main valve rod;
the locking block is fixedly arranged on the sleeve;
the lock shaft is rotatably arranged on the main valve support;
the lock groove is arranged on the lock shaft and can be matched with the lock block;
and the locking driving mechanism is arranged on the main valve support and can drive the locking shaft to rotate.
The locking driving mechanism comprises an automatic driving mechanism, the automatic driving mechanism is provided with a locking swing arm, a connecting rod and a locking cylinder, the locking cylinder is installed on the main valve support, the first end of the connecting rod is hinged to a piston rod of the locking cylinder, the second end of the connecting rod is hinged to the first end of the locking swing arm, and the second end of the locking swing arm is fixedly connected with a locking shaft.
The locking drive mechanism further includes a manual drive mechanism having:
the first end of the locking connecting rod is fixedly connected with the locking shaft, and two ends of the locking shaft are respectively provided with one locking connecting rod;
and the locking handle is connected with the two locking connecting rods.
The front valve assembly has:
the front valve rod extends into the shell and can move in the shell, and the front valve rod can open or close a front valve channel of the shell through movement;
a front valve motor mounted on the housing;
the first end of the front valve rocker is connected with a rotating shaft of the front valve motor;
the first end of the front valve connecting rod is hinged with the second end of the front valve rocker arm; the second end of the front valve connecting rod is hinged with the first end of the front valve rod;
a front valve head disposed on a second end of the front valve stem.
The main valve rod is also provided with a spring, and the thrust of the spring can push the main valve rod to move downwards.
The valve rod of the front valve is provided with a slide rod which can slide in the guide groove.
One of the above technical scheme has following advantage or beneficial effect, through two valve body synergism, the front valve is as the flow valve, can adjust the flow, and the main valve is as the auxiliary valve, can emergency shutdown, the safe work of guarantee steam turbine.
Drawings
FIG. 1 is a schematic diagram of a steam turbine inlet valve according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of the structure of the steam turbine inlet valve of FIG. 1;
FIG. 3 is a schematic view of the internal structure of the steam turbine inlet valve of FIG. 1;
FIG. 4 is a schematic illustration of the main valve assembly of the steam turbine inlet valve of FIG. 1;
FIG. 5 is a schematic structural view of a main valve locking mechanism of the steam turbine intake valve of FIG. 1;
FIG. 6 is a schematic structural view of a main valve locking mechanism of the steam turbine intake valve of FIG. 1;
FIG. 7 is a schematic structural view of a forward valve assembly of the steam turbine inlet valve of FIG. 1;
the labels in the above figures are: 1. front valve assembly, 11, front valve motor, 12, front valve rocker, 13, front valve link, 14, front valve stem, 15, front valve head, 2, main valve assembly, 21, main valve support, 22, main valve drive mechanism, 221, main valve motor, 222, main valve rocker, 223, main valve link, 224, main valve stem, 225, spring, 23, main valve locking mechanism, 231, sleeve, 2311, lock block, 232, lock shaft, 2321, lock groove, 233, lock link, 234, lock handle, 235, lock swing arm, 236, connecting rod, 237, lock cylinder, 3, housing.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1-7, a steam turbine inlet valve has:
the air inlet and the air outlet are arranged on the shell;
the front valve component is arranged on the shell and is arranged between the air inlet and the air outlet;
the main valve component is arranged on the shell and arranged between the air inlet and the air outlet; the main valve assembly is in series with the front valve assembly.
The main valve component is arranged along the up-down direction, and the front valve component is crossed with the main valve component. Namely, the main valve component is vertically arranged, and the front valve component is horizontally arranged. The main valve component is vertically arranged, the main valve rod can move downwards under the action of gravity to lock the valve body, locking is reliable, and auxiliary locking is started.
The main valve assembly as shown in fig. 3-4 has:
a main valve support installed on the housing;
the main valve rod extends into the shell and can move in the shell, and the main valve rod can open or close a main valve channel of the shell through movement;
and the main valve driving mechanism is arranged on the main valve support and can drive the main valve rod to move.
The main valve driving mechanism is provided with a main valve motor, a main valve rocker and a main valve connecting rod, wherein the main valve motor is arranged on the main valve support, the first end of the main valve rocker is fixedly connected with a rotating shaft of the main valve motor, the second end of the main valve rocker is hinged with the first end of the main valve connecting rod, and the second end of the main valve connecting rod is hinged with the main valve rod.
As shown in fig. 5, the main valve assembly is further provided with a lock mechanism having:
the sleeve is fixedly arranged on the main valve rod;
the locking block is fixedly arranged on the sleeve;
the lock shaft is rotatably arranged on the main valve support;
the locked groove is arranged on the lock shaft and can be matched with the lock block.
When locking is needed, the locking block is clamped in the locking groove to keep the main valve passage open. When the lock is released, the main valve stem descends to close the passage.
And the locking driving mechanism is arranged on the main valve support and can drive the lock shaft to rotate.
As shown in fig. 6, the locking driving mechanism includes an automatic driving mechanism, the automatic driving mechanism has a locking swing arm, a connecting rod and a locking cylinder, the locking cylinder is installed on the main valve support, a first end of the connecting rod is hinged to a piston rod of the locking cylinder, a second end of the connecting rod is hinged to a first end of the locking swing arm, and a second end of the locking swing arm is fixedly connected to the locking shaft. The locking is automatically driven or released, and the working efficiency is high.
The locking drive mechanism further includes a manual drive mechanism having:
the first end of the locking connecting rod is fixedly connected with the lock shaft, and two ends of the lock shaft are respectively provided with one locking connecting rod;
and the locking handle is connected with the two locking connecting rods. Meanwhile, a manual locking driving mechanism is arranged, and when the automatic mechanism fails, the manual operation is started.
As shown in fig. 7, the front valve assembly has:
the front valve rod extends into the shell and can move in the shell, and the front valve rod can open or close a front valve channel of the shell through movement;
a front valve motor mounted on the housing;
the first end of the front valve rocker is connected with a rotating shaft of a front valve motor;
the first end of the front valve connecting rod is hinged with the second end of the front valve rocker arm; the second end of the front valve connecting rod is hinged with the first end of the front valve rod;
and the front valve head is arranged on the second end of the front valve rod.
The main valve rod is also provided with a spring, and the thrust of the spring can push the main valve rod to move downwards. The spring plays a role in assisting in pushing the locking. Through a series of locking mechanisms on the main valve, reliable locking is ensured, and the steam turbine can be closed emergently when a fault occurs.
The front valve is horizontally arranged, and the main valve is vertically arranged, so that the front valve is conveniently connected with the air source pipeline.
The valve rod of the front valve is provided with a slide rod which can slide in the guide groove and can guide the valve rod of the front valve to move linearly.
After adopting foretell structure, through two valve body synergism, the flow can be adjusted as the flow valve to the front valve, and the main valve is as the auxiliary valve, can emergency shutdown, the safe work of guarantee steam turbine.
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.
Claims (10)
1. A steam turbine inlet valve, comprising:
the air conditioner comprises a shell, wherein an air inlet and an air outlet are formed in the shell;
a front valve assembly disposed on the housing, the front valve assembly disposed between the air inlet and the air outlet;
a main valve assembly disposed on the housing, the main valve assembly being disposed between the air inlet and the air outlet; the main valve assembly is in series with the front valve assembly.
2. The turbine inlet valve of claim 1 wherein said main valve assembly is disposed in an up and down direction and said forward valve assembly intersects said main valve assembly.
3. The steam turbine inlet valve of claim 2, wherein said main valve assembly has:
a main valve seat mounted on the housing;
the main valve rod extends into the shell and can move in the shell, and the main valve rod can open or close a main valve channel of the shell through movement;
and the main valve driving mechanism is arranged on the main valve support and can drive the main valve rod to move.
4. The steam turbine inlet valve of claim 3, wherein said main valve actuator comprises a main valve motor, a main valve rocker and a main valve link, said main valve motor being mounted on said main valve support, said main valve rocker having a first end fixedly connected to a rotating shaft of said main valve motor, a second end pivotally connected to said first end of said main valve link, and a second end pivotally connected to said main valve link.
5. The steam turbine inlet valve of claim 4, wherein the main valve assembly further includes a locking mechanism, the locking mechanism comprising:
the sleeve is fixedly arranged on the main valve rod;
the locking block is fixedly arranged on the sleeve;
the lock shaft is rotatably arranged on the main valve support;
the lock groove is arranged on the lock shaft and can be matched with the lock block;
and the locking driving mechanism is arranged on the main valve support and can drive the locking shaft to rotate.
6. The steam turbine inlet valve of claim 5, wherein the locking actuator comprises an automatic actuator having a locking swing arm, a connecting rod and a locking cylinder, the locking cylinder being mounted on the main valve support, a first end of the connecting rod being hinged to a piston rod of the locking cylinder, a second end of the connecting rod being hinged to a first end of the locking swing arm, and a second end of the locking swing arm being fixedly connected to the locking shaft.
7. The steam turbine inlet valve of claim 6, wherein said lock-up drive mechanism further comprises a manual drive mechanism having:
the first end of the locking connecting rod is fixedly connected with the locking shaft, and two ends of the locking shaft are respectively provided with one locking connecting rod;
and the locking handle is connected with the two locking connecting rods.
8. The steam turbine inlet valve of claim 7, wherein said forward valve assembly has:
the front valve rod extends into the shell and can move in the shell, and the front valve rod can open or close a front valve channel of the shell through movement;
a front valve motor mounted on the housing;
the first end of the front valve rocker is connected with a rotating shaft of the front valve motor;
the first end of the front valve connecting rod is hinged with the second end of the front valve rocker arm; the second end of the front valve connecting rod is hinged with the first end of the front valve rod;
a front valve head disposed on a second end of the front valve stem.
9. The turbine inlet valve of claim 8 wherein said main valve stem further comprises a spring biased to urge said main valve stem downwardly.
10. The steam turbine inlet valve of claim 9 further comprising a guide slot, wherein said forward valve stem has a slide bar slidably disposed within said guide slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110303371.7A CN113062778A (en) | 2021-03-22 | 2021-03-22 | Steam turbine air inlet valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110303371.7A CN113062778A (en) | 2021-03-22 | 2021-03-22 | Steam turbine air inlet valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113062778A true CN113062778A (en) | 2021-07-02 |
Family
ID=76563149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110303371.7A Pending CN113062778A (en) | 2021-03-22 | 2021-03-22 | Steam turbine air inlet valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113062778A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002054402A (en) * | 2000-08-11 | 2002-02-20 | Fuji Electric Co Ltd | Emergency governor testing device for turbine |
| US20030035720A1 (en) * | 2001-08-17 | 2003-02-20 | Ralf Gerdes | Valve arrangement for a power plant |
| US20050063818A1 (en) * | 2002-05-03 | 2005-03-24 | Alstom Technology Ltd | Steam turbine |
| JP2014062614A (en) * | 2012-09-22 | 2014-04-10 | Senpaku Haikan Kiki Technology Co Ltd | Shutoff valve |
-
2021
- 2021-03-22 CN CN202110303371.7A patent/CN113062778A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002054402A (en) * | 2000-08-11 | 2002-02-20 | Fuji Electric Co Ltd | Emergency governor testing device for turbine |
| US20030035720A1 (en) * | 2001-08-17 | 2003-02-20 | Ralf Gerdes | Valve arrangement for a power plant |
| US20050063818A1 (en) * | 2002-05-03 | 2005-03-24 | Alstom Technology Ltd | Steam turbine |
| JP2014062614A (en) * | 2012-09-22 | 2014-04-10 | Senpaku Haikan Kiki Technology Co Ltd | Shutoff valve |
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