CN210890338U - Mechanical limiting device for pressure regulating valve - Google Patents
Mechanical limiting device for pressure regulating valve Download PDFInfo
- Publication number
- CN210890338U CN210890338U CN201921994967.0U CN201921994967U CN210890338U CN 210890338 U CN210890338 U CN 210890338U CN 201921994967 U CN201921994967 U CN 201921994967U CN 210890338 U CN210890338 U CN 210890338U
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- hole
- regulating valve
- pressure regulating
- rotating rod
- stop
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Abstract
The utility model relates to a pressure regulating valve mechanical limiting device, which comprises a fixed sleeve, wherein a through connecting hole is arranged on the fixed sleeve, a rotating rod connected with a pressure regulating valve body is arranged in the connecting hole, the end part of the fixed sleeve is provided with a limiting flange, the peripheral surface of the rotating rod is provided with a stop block, the height of the stop block is flush with the height of the limiting flange, the peripheral surface of the fixed sleeve is provided with a positioning threaded hole communicated with the connecting hole in the fixed sleeve, the peripheral surface of the rotating rod is provided with a stop hole corresponding to the positioning threaded hole, the positioning threaded hole is internally connected with a positioning bolt, the end part of the positioning bolt extends into the stop hole on the peripheral surface of the rotating rod, the opening degree of a valve is lower than 10 percent, the rotating rod is fixed by the positioning bolt, the pressure regulating valve is ensured to, the pressure stability of branch pipelines in the fixed cooling water system is ensured.
Description
Technical Field
The utility model belongs to the technical field of machinery and specifically relates to a pressure regulating valve machinery stop device.
Background
The pressure regulating valve is also called self-operated balance valve, flow control valve, flow controller, dynamic balance valve and flow balance valve, and is a visual, simple and convenient flow regulation control device.
The precision required by the pressure of water flow in a fixed cooling water system in the power generation industry is higher, for example, the pressure of a branch pipeline of the fixed cooling water system cannot exceed 15% of the pressure of a main pipeline, a pressure regulating valve is arranged at the connecting position of the branch pipeline and the main pipeline, how to ensure the pressure of liquid in the branch pipeline is important for the pressure regulating valve, the valve is basically fully opened after a rotating rod on the conventional pressure regulating valve rotates for 3 circles, and the pressure of the branch pipeline basically tends to the pressure of the main pipeline when the branch pipeline is in a fully opened state, so that the valve of the pressure regulating valve must be in a half-opened state or a state lower than the half-opened state, and how to prevent the pressure regulating valve from being excessively opened is an important index for safety check of the fixed cooling water system.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a mechanical stop device of pressure regulating valve in order to solve the defect that prior art exists.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
the utility model provides a pressure regulating valve machinery stop device, includes fixed cover, is equipped with the connecting hole that runs through on the fixed cover, wears to be equipped with the dwang of being connected with the pressure regulating valve body in the connecting hole, the tip of fixed cover is equipped with limit flange, be equipped with the stopper on the global of dwang, the height of stopper with limit flange's height flushes, be equipped with the positioning screw hole with fixed cover internal connection hole intercommunication on the global of fixed cover, be equipped with the locking hole that corresponds with positioning screw hole on the global of dwang, positioning screw threaded hole internal connection positioning bolt, positioning bolt's tip stretches into in the global locking hole of dwang.
Furthermore, the limiting flange and the fixing sleeve are integrally formed.
Further, the stopper is integrally formed with the rotating lever.
Further, a protective sleeve which is sleeved outside the rotating rod is arranged in the connecting hole, the protective sleeve is fixed in the connecting hole, and a through hole corresponding to the stop hole is formed in the protective sleeve.
Further, the free end of the rotating rod is connected with a handle.
The utility model has the advantages that: the end part of a fixed sleeve of the limiting device is provided with a limiting flange, the peripheral surface of a rotating rod is provided with a stop block, the height of the stop block is flush with the height of the limiting flange, the peripheral surface of the fixed sleeve is provided with a positioning threaded hole communicated with a connecting hole in the fixed sleeve, the peripheral surface of the rotating rod is provided with a stop hole corresponding to the positioning threaded hole, a positioning bolt is connected in the positioning threaded hole, when the pressure regulating valve is normally used, the end part of the positioning bolt extends into the stop hole on the peripheral surface of the rotating rod, at the moment, the opening degree of the valve is lower than 10 percent, the rotating rod is fixed through the positioning bolt, the pressure regulating valve is ensured to be in a stable opening state, if the valve needs to be further opened, the positioning bolt is drawn out, the rotating rod is further regulated, as the end part of, carry out spacing to the dwang through spacing flange and prevent that the dwang from rotating the number of turns and too much leading to the valve to open the transition, guarantee to decide the pressure stability of branch pipeline in the cold water system.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the present invention before installing the positioning bolt;
fig. 3 is a schematic structural view of the fixing sleeve of the present invention.
Detailed Description
As shown in fig. 1 to 3, a mechanical limiting device for a pressure regulating valve, including a fixing sleeve 1, a connecting hole 2 is provided on the fixing sleeve 1, a rotating rod 3 connected with a valve body of the pressure regulating valve is penetrated in the connecting hole 2, the end portion of the fixing sleeve 1 is provided with a limiting flange 4, a stop block 5 is provided on the circumferential surface of the rotating rod 3, the height of the stop block 5 is flush with the height of the limiting flange 4, a positioning threaded hole 6 communicated with the connecting hole 2 in the fixing sleeve 1 is provided on the circumferential surface of the fixing sleeve 1, a stop hole 7 corresponding to the positioning threaded hole 6 is provided on the circumferential surface of the rotating rod 3, a positioning bolt 8 is connected in the positioning threaded hole 6, a protective sleeve 9 arranged in the connecting hole 2 and sleeved outside the rotating rod 3 is provided, the protective sleeve 9 is fixed in the connecting hole 2, a through hole 10 corresponding to the stop hole 7 on the.
Further, the limit flange 4 is integrally formed with the fixed sleeve 1, and the stopper 5 is integrally formed with the rotating lever 3. The free end of the swivelling lever 3 is connected to a handle 11.
During pressure regulating valve normal use, positioning bolt 8's tip passes through-hole 10 and stretches into in the global locking hole 7 of dwang 3, at this moment, the aperture of valve is less than 10%, dwang 3 is fixed through positioning bolt 8, guarantee that pressure regulating valve is in stable open mode, if need further open the valve when, take positioning bolt 8 out, further adjust dwang 3, because the tip of fixed cover 1 is equipped with limit flange 4, dwang 3 rotates big half a circle at most and can stop dwang 3 further rotation with limit flange 4 contact promptly, carry out spacing prevention dwang 3 through limit flange 4 and rotate the number of turns and lead to the valve to open the transition, guarantee the stable pressure of branch pipeline in the cooling water system.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a pressure regulating valve machinery stop device, includes fixed cover, is equipped with the connecting hole that runs through on the fixed cover, wears to be equipped with the dwang of being connected with the pressure regulating valve body in the connecting hole, a serial communication port, the tip of fixed cover is equipped with limit flange, be equipped with the stop block on the global of dwang, the stop block highly with limit flange's high flushing, be equipped with the positioning thread hole with fixed cover internal connection hole intercommunication on the global of fixed cover, be equipped with the locking hole that corresponds with positioning thread hole on the global of dwang, positioning thread downthehole connection positioning bolt, positioning bolt's tip stretches into in the global locking hole of dwang.
2. The mechanical stop device for a pressure-regulating valve of claim 1, wherein said stop flange is integrally formed with the retainer sleeve.
3. A pressure-regulating valve mechanical stop according to claim 1 or 2, wherein the stop block is formed integrally with the swivelling lever.
4. The mechanical limiting device for the pressure regulating valve according to claim 3, wherein a protective sleeve sleeved outside the rotating rod is arranged in the connecting hole, the protective sleeve is fixed in the connecting hole, and a through hole corresponding to the moving hole on the rotating rod is formed in the protective sleeve.
5. The mechanical limiting device for pressure regulating valves according to claim 1, wherein the free end of the rotating rod is connected with a handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921994967.0U CN210890338U (en) | 2019-11-19 | 2019-11-19 | Mechanical limiting device for pressure regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921994967.0U CN210890338U (en) | 2019-11-19 | 2019-11-19 | Mechanical limiting device for pressure regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210890338U true CN210890338U (en) | 2020-06-30 |
Family
ID=71338829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921994967.0U Active CN210890338U (en) | 2019-11-19 | 2019-11-19 | Mechanical limiting device for pressure regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210890338U (en) |
-
2019
- 2019-11-19 CN CN201921994967.0U patent/CN210890338U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |