CN210800112U - Flow-controllable three-state valve - Google Patents
Flow-controllable three-state valve Download PDFInfo
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- CN210800112U CN210800112U CN201921737183.XU CN201921737183U CN210800112U CN 210800112 U CN210800112 U CN 210800112U CN 201921737183 U CN201921737183 U CN 201921737183U CN 210800112 U CN210800112 U CN 210800112U
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- flow
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Abstract
The utility model relates to a controllable three-state valve of flow, including three-state valve body, locate the first pipeline and the second pipeline at valve body bottom both ends, the second pipeline is in first pipeline top, first export and second export, the valve body upper end is equipped with the upper seal seat, the valve rod slides along the upper seal axle in locating the upper seal seat, the valve rod lower extreme is equipped with and keeps off the lid, keep off the lid and pass the second pipeline and block first pipeline entry, keep off the lid and include the upper cover and rotate the lower cover of locating the upper cover lower extreme, be equipped with the not hole of equidimension on upper cover and the lower cover, adjust the flow through the motion between upper cover and the lower cover. The utility model discloses can take place to rotate with the lower cover through rotating the valve rod drive upper cover, and then the control flow, when mechanical pressure table pipeline drops, interior cooling water will leak in 30min, and the operation personnel on duty have enough time to discover the water level and descend to cut the valve to the closed position, thereby effectively prevent the emergence of the direct shutting condition of high voltage direct current transmission system.
Description
Technical Field
The utility model relates to a valve, especially a controllable three-state valve of flow.
Background
In the high-voltage direct-current transmission system, when the converter valve equipment normally operates, a large amount of heat can be generated, and a valve cooling system can rapidly take away the generated heat through circulating water of an internal cooling system and an external cooling system, so that the safe and stable operation of the converter valve equipment is guaranteed. Wherein cooling system in the valve is a inclosed water circulating system, need have the manometer to monitor pipeline pressure, produce vibrations when equipment such as valve cooling system main pump moves, there is the risk that the junction of mechanical pressure gauge and pipeline drops, in case the connecting tube of manometer drops, will lead to in-valve cooling water to leak fast, cause high voltage direct current transmission system shutting, cause very big impact to the electric wire netting, need improve the structure of valve for this reason, when dropping at manometer and pipeline junction, the volume of leaking is little, find to leak and handle and reserve the time margin for the operating personnel, prevent the emergence of electric power accident.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a controllable three-state valve of flow, flow control through the valve rod, the operation personnel on duty have sufficient time to discover the water level decline to cut the valve to the closed position, thereby effectively prevent the emergence of the direct shutting condition of high voltage direct current transmission system.
The technical scheme of the utility model is specifically as follows:
the utility model provides a controllable three-state valve of flow, including three-state valve body, locate the first pipeline and the second pipeline at valve body bottom both ends, the second pipeline is in first pipeline top, first export and second export communicate with first pipeline and second pipeline respectively, the valve body upper end is equipped with the upper seal seat, the valve rod slides along the upper seal axle in locating the upper seal seat, the valve rod lower extreme is equipped with keeps off the lid, it blocks first pipeline entry to keep off the lid to pass the second pipeline, keep off the lid and include the upper cover and rotate the lower cover of locating the upper cover lower extreme, be equipped with the not hole of equidimension on upper cover and the lower cover, adjust the flow through the motion between upper cover and the lower cover.
Furthermore, the top end of the valve rod is also provided with a rotating handle.
Furthermore, the upper cover is connected with the lower cover through the rotating shaft, and when the lower cover is clamped at the inlet of the first pipeline, the upper cover is rotated to control the flow.
Furthermore, one side of the upper cover is provided with a big hole, and the other side is provided with a small hole.
Furthermore, one side of the lower cover is provided with a hole corresponding to the big hole.
Further, the first and second conduits are curved, and the outlets and inlets of the first and second conduits are not in a plane.
Further, the outlets of the first pipeline and the second pipeline are positioned on two side vertical surfaces of the valve body, and the inlets of the first pipeline and the second pipeline are positioned on a horizontal surface.
Further, the radius of the center of the small hole is 120 degrees with the radius of the center of the large hole.
Compared with the prior art, the beneficial effects of the utility model are specifically as follows:
the utility model discloses can take place to rotate with the lower cover through rotating the valve rod drive upper cover, and then the control flow, when mechanical pressure table pipeline drops, interior cooling water will leak in 30min, and the operation personnel on duty have enough time to discover the water level and descend to cut the valve to the closed position, thereby effectively prevent the emergence of the direct shutting condition of high voltage direct current transmission system.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of section A-A of FIG. 1;
fig. 3 is a schematic structural view of a section B-B in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some examples of the present invention, not all examples. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in fig. 1, the utility model discloses a controllable three-state valve of flow, including three-state valve body 1, locate first pipeline 7 and the second pipeline 8 at 1 bottom both ends of valve body, second pipeline 8 is in 1 top of first pipeline, first export and second export communicate with first pipeline and second pipeline respectively, 1 upper end of valve body is equipped with upper seal seat 4, valve rod 3 slides along the upper seal axle in locating upper seal seat, 3 lower extremes of valve rod are equipped with and keep off the lid, it blocks 7 entries of first pipeline to keep off the lid to pass second pipeline 8, it includes upper cover 5 and the lower cover 6 of locating the upper cover lower extreme to keep off the lid, be equipped with the not hole of equidimension on upper cover 5 and the lower cover 6, adjust the flow through the motion between upper cover and the lower cover. The top end of the valve rod 3 is also provided with a rotating handle 2. The outlet of the second pipeline 8 is connected with the pipeline.
As shown in fig. 2 and 3, the upper cover 5 is connected to the lower cover 6 through a rotating shaft 9, and when the lower cover 6 is clamped at the inlet of the first pipe 7, the upper cover 5 is rotated to control the flow.
As shown in fig. 2, one side of the upper cover 5 is provided with a large hole 5.1, and the other side is provided with a small hole 5.2. The radius of the center of the small hole 5.2 is 120 degrees with the radius of the center of the large hole 5.1.
As shown in fig. 3, a hole 6.1 corresponding to the large hole 5.1 is provided at one side of the lower cover 6. The lower cover 6 is fixed at the inlet of the first pipeline 7, and the upper cover 5 rotates.
The diameter of the big hole 5.1 is 5mm, the diameter of the hole 5.2 is 1mm, and the diameter of the hole 6.1 is 5mm which is the same as the diameter of the big hole 5.1.
As shown in fig. 1, the first pipe 7 and the second pipe 8 are curved, the outlets of the first pipe 7 and the second pipe 8 are located on the vertical surfaces of both sides of the valve body 1, and the inlets of the first pipe 7 and the second pipe 8 are located on the horizontal surface.
The working principle of the utility model is as follows:
in the state (1), when point 1 in fig. 2 is aligned with point a in fig. 3, the valve is opened at a normal large flow rate, and this state is used when water injection and exhaust are installed.
In the state (2), when the point 2 in fig. 2 is aligned with the point a in fig. 3, the valve is opened for the normal micro flow rate, and this state is used in the normal operation state, that is, the normal operation state we need.
In the state (3), when the point 3 in fig. 2 is aligned with the point a in fig. 3, the valve is in the normal closed state, and in the case of water leakage or replacement of the monitoring pressure gauge, the valve can be closed.
If the valve cooling system is in a use state (1) in operation, when a pipeline of the mechanical pressure gauge falls off, a large amount of internal cooling water leaks within 2min, an operator on duty does not respond, and the valve cooling system leakage protection can act to lock the high-voltage direct-current transmission system.
If the high-voltage direct-current transmission system is in the operating state (2), when a pipeline of the mechanical pressure gauge falls off, internal cooling water leaks within 30min, and an operator on duty has enough time to find that the water level drops and switches the valve to the closed position (state (3)), so that the asynchronous fluctuation of the voltage and the frequency of the high-voltage transmission network caused by the direct locking of the high-voltage direct-current transmission system is effectively prevented.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A flow-controllable three-state valve is characterized in that: including three-state valve body, locate first pipeline and second pipeline at valve body bottom both ends, the second pipeline is in first pipeline top, first export and second export communicate with first pipeline and second pipeline respectively, the valve body upper end is equipped with the upper seal seat, the valve rod slides along the upper seal axle in locating the upper seal seat, the valve rod lower extreme is equipped with keeps off the lid, it blocks first pipeline entry to pass the second pipeline to keep off the lid, keep off the lid and include the upper cover and rotate the lower cover of locating the upper cover lower extreme, be equipped with the not hole of equidimension on upper cover and the lower cover, adjust the flow through the motion between upper cover and the lower cover.
2. A three-state valve with controllable flow rate according to claim 1, wherein: the top end of the valve rod is also provided with a rotating handle.
3. A three-state valve with controllable flow rate according to claim 1, wherein: the upper cover is connected with the lower cover through a rotating shaft, and when the lower cover is clamped at the inlet of the first pipeline, the upper cover is rotated to control the flow.
4. A three-state valve with controllable flow rate according to claim 1, wherein: one side of the upper cover is provided with a big hole, and the other side is provided with a small hole.
5. The flow controllable tri-state valve of claim 4, wherein: one side of the lower cover is provided with a hole corresponding to the big hole.
6. The flow controllable tri-state valve of claim 4, wherein: the first pipeline and the second pipeline are curved, and the outlet and the inlet of the first pipeline and the second pipeline are not in the same plane.
7. The flow controllable tri-state valve of claim 4, wherein: the outlets of the first pipeline and the second pipeline are positioned on the vertical surfaces on two sides of the valve body, and the inlets of the first pipeline and the second pipeline are positioned on the horizontal surface.
8. The flow controllable tri-state valve of claim 4, wherein: the radius of the center of the small hole is 120 degrees with the radius of the center of the large hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921737183.XU CN210800112U (en) | 2019-10-16 | 2019-10-16 | Flow-controllable three-state valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921737183.XU CN210800112U (en) | 2019-10-16 | 2019-10-16 | Flow-controllable three-state valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210800112U true CN210800112U (en) | 2020-06-19 |
Family
ID=71242634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921737183.XU Active CN210800112U (en) | 2019-10-16 | 2019-10-16 | Flow-controllable three-state valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210800112U (en) |
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2019
- 2019-10-16 CN CN201921737183.XU patent/CN210800112U/en active Active
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