CN220980487U - Compression device for diaphragm valve of steam turbine - Google Patents
Compression device for diaphragm valve of steam turbine Download PDFInfo
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- CN220980487U CN220980487U CN202323103772.1U CN202323103772U CN220980487U CN 220980487 U CN220980487 U CN 220980487U CN 202323103772 U CN202323103772 U CN 202323103772U CN 220980487 U CN220980487 U CN 220980487U
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- compression device
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- 230000006835 compression Effects 0.000 title claims description 16
- 238000007906 compression Methods 0.000 title claims description 16
- 239000007769 metal material Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 18
- 238000000034 method Methods 0.000 abstract description 5
- 238000003825 pressing Methods 0.000 description 9
- 239000003921 oil Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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Abstract
The present disclosure relates to a hold-down device for a steam turbine diaphragm valve, the hold-down device comprising: the base is used for being connected with the valve seat of the diaphragm valve and arranged around the valve rod of the diaphragm valve; and the limiting piece is connected with the base and is used for being arranged around the valve rod and positioned on one side of the pointer nut of the valve rod and used for providing force for enabling the pointer nut to press against the valve seat. The limiting piece limits the pointer nut, so that the pointer nut can not drive the valve rod to move in a direction away from the valve seat, and in the test process before the operation of the turbine unit, the diaphragm valve can always ensure the closing state, the on-time completion of various tests such as a speed regulation valve stroke test is ensured, and the debugging and overhaul progress of the unit is improved.
Description
Technical Field
The disclosure relates to the technical field of turbine detection, in particular to a compressing device for a diaphragm valve of a turbine.
Background
In the security system of the steam turbine, the diaphragm valve connects lubricating oil system and EH oil (high-pressure flame-retardant explosion-proof oil) system, and separate the two oil paths, its function is to leak out the machinery, manual oil-blocking when the machinery of the steam turbine is overspeed and hand trip the hand grip, will leak out the machinery, manual oil-blocking when either acts, make the upper oil pressure of the diaphragm valve lose, open the diaphragm valve under the function of spring force, leak out EH critical oil-blocking and close all air inlet valves to realize shutting down, machinery, manual oil-blocking and EH high-pressure oil-blocking depend on the diaphragm valve to separate, each other not communicate, so the function of the diaphragm valve is very important. Under the condition that the existing turbine unit does not have conditional operation, as the diaphragm valve cannot determine the closing reliability at the moment, various tests such as speed regulation valve transmission and stroke test cannot be completed, and the reliability of the diaphragm valve after formal operation cannot be known, if the test process is not performed directly on the unit operation, if the safety oil pressure for unknown reasons is low, the diaphragm valve is closed unreliably, abnormal shutdown accidents of the unit are easily caused, and the follow-up maintenance progress is influenced. It is therefore desirable to provide a tool that can ensure that the diaphragm valve is reliably closed for auxiliary testing prior to the actual operation of the unit.
Disclosure of utility model
The purpose of the present disclosure is to provide a closing device for a diaphragm valve of a steam turbine, so as to solve the problem of ensuring the closing reliability of the diaphragm valve, assist various tests such as speed-regulating valve transmission and stroke test, and reduce the occurrence of abnormal shutdown accidents.
In order to achieve the above object, the present disclosure provides a packing apparatus for a diaphragm valve of a steam turbine, the packing apparatus comprising:
the base is used for being connected with the valve seat of the diaphragm valve and arranged around the valve rod of the diaphragm valve; and
The limiting piece is connected with the base, and the limiting piece is used for being arranged around the valve rod and located on one side of the pointer nut of the valve rod and used for providing force for enabling the pointer nut to press against the valve seat.
Optionally, the pressing device further includes a fixing portion, where the fixing portion is used to connect the base and the valve seat, and the base and the limiting piece are disposed on the fixing portion at intervals.
Optionally, the fixing portion includes:
The base and the limiting piece are both movably arranged on the first fastening piece; and
The first nut is arranged on the first fastener, is positioned on one side, far away from the pointer nut, of the limiting piece and is used for providing force for enabling the limiting piece to press the pointer nut.
Optionally, the number of the first fasteners is two, and the first fasteners are arranged between the base and the limiting piece at intervals, and the number of the first nuts is two and are respectively arranged on the first fasteners.
Optionally, the fixing portion further includes a second nut, the second nut is disposed on the first fastener, one end of the first fastener is connected to the valve seat, and the second nut is disposed on a side of the base, which is close to the limiting member, and is used for limiting the base between the second nut and the valve seat.
Optionally, the fixing portion further includes a second fastener for connecting the base to the valve seat.
Optionally, the fixing portion further includes a third nut, and the third nut is disposed on the second fastener and located between the valve seat and the base.
Optionally, the base with the locating part is the U shaped board, the opening part of U shaped board is used for supplying the valve rod passes through.
Optionally, an avoidance gap is formed at the edge of the limiting piece, and the avoidance gap is used for avoiding a component of the diaphragm valve.
Optionally, the pressing device is made of metal.
Through the technical scheme, the limiting piece limits the pointer nut, so that the pointer nut can not drive the valve rod to move in the direction away from the valve seat, and therefore, the diaphragm valve can always ensure the closing state in the test process before the operation of the turbine unit, the on-time completion of various tests such as a speed regulation valve stroke test is ensured, and the debugging and overhaul progress of the unit is improved.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
FIG. 1 is a schematic illustration of a hold-down device for a turbine diaphragm valve disposed on the diaphragm valve according to one embodiment of the present disclosure.
FIG. 2 is a front view of a hold-down device for a turbine diaphragm valve disposed on the diaphragm valve according to one embodiment of the present disclosure.
FIG. 3 is a schematic illustration of a hold-down device for a turbine diaphragm valve disposed on the diaphragm valve according to another embodiment of the present disclosure.
FIG. 4 is a schematic illustration of a hold-down device for a turbine diaphragm valve according to one embodiment of the present disclosure.
Description of the reference numerals
1-A base; 2-limiting parts; 21-avoiding a notch; 3-a first fastener; 4-a first nut; 5-a second nut; 6-a second fastener; 7-a third nut; 81-valve seat; 82-a valve stem; 83-pointer nut.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
In this disclosure, unless otherwise indicated, terms of orientation such as "inner" and "outer" are used herein as defined with respect to the outline of the corresponding component. The use of the terms first, second, etc. are used for the purpose of distinguishing between different elements and not necessarily for the sake of order or importance. Furthermore, in the following description, when referring to the drawings, the same reference numerals in different drawings denote the same or similar elements unless otherwise explained.
The diaphragm valve includes a valve seat 81, a valve stem 82, and a pointer nut 83, wherein the valve seat 81 is fixed to the turbine, the pointer nut 83 is fixed to the valve stem 82, and the valve stem 82 is stationary with respect to the valve seat 81 in a state where the diaphragm valve is closed in a case where the turbine is operated normally. If the turbine is abnormal, if the safe oil pressure is low due to unknown reasons, the valve rod 82 moves relative to the valve seat 81, so that the diaphragm valve is not reliably closed, and abnormal shutdown accidents of the unit can be caused, and the subsequent production is affected. Therefore, before the turbine unit is put into operation formally, various tests such as speed regulation valve transmission and stroke tests are required to be carried out, in the test process, the diaphragm valve is required to be in a closed state so as to obtain data debugging, and after the turbine unit is put into operation formally, the occurrence of shutdown accidents caused by unreliable closing of the diaphragm valve is reduced.
Specifically, according to one embodiment of the present disclosure, as shown in fig. 1 to 4, a compressing device for a diaphragm valve of a steam turbine is provided, and the compressing device may include a base 1 and a stopper 2. Wherein the base 1 may be adapted to be connected to a valve seat 81 of a diaphragm valve and arranged around a valve stem 82 of the diaphragm valve. The stopper 2 is connected to the base 1, and the stopper 2 is for being disposed around the valve stem 82 and on one side of the pointer nut 83 of the valve stem 82 for providing a force for pressing the pointer nut 83 against the valve seat 81. The base 1 and the limiting member 2 may be integrally formed, or may be connected by a fixing portion hereinafter, which is not limited in the present disclosure.
Through the technical scheme, the limiting piece 2 limits the pointer nut 83, so that the pointer nut 83 can not drive the valve rod 82 to move in the direction away from the valve seat 81, and therefore, in the test process before the operation of the turbine unit, the diaphragm valve can always ensure the closing state, the on-time completion of various tests such as a speed regulation valve stroke test is ensured, and the debugging and overhaul progress of the unit is improved.
It should be noted that, the hold-down device in this disclosure is used when the turbine unit is experimental, when the turbine unit formally operates, need dismantle hold-down device to when guaranteeing that the inside oil pressure of turbine is too high, the diaphragm valve can normally be released pressure, guarantees production safety.
Further, as shown in fig. 1 to 4, the pressing device may further include a fixing portion for connecting the base 1 and the valve seat 81, and the base 1 and the stopper 2 are disposed on the fixing portion at intervals. The fixing portion may be a structure of matching a bolt and a nut, or may be a clamping structure of matching a protrusion and a groove, which is not limited in this disclosure.
Further, as shown in fig. 1 to 4, the fixing portion may include a first fastener 3 and a first nut 4. Wherein, base 1 and locating part 2 are all movably set up on first fastener 3 to can adjust the interval between base 1 and the locating part 2 according to the distance of pointer nut 83 and disk seat 81 when closing device installs on disk seat 81. The first nut 4 may be provided on the first fastener 3, and the first nut 4 is located on a side of the stopper 2 remote from the pointer nut 83, for providing a force for pressing the stopper 2 toward the pointer nut 83. After the limiting piece 2 is in contact with the pointer nut 83, the first nut 4 is screwed down, the limiting piece 2 is fixed between the first nut 4 and the pointer nut 83, so that when the valve rod 82 drives the pointer nut 83 and provides force for the pointer nut 83 to a direction far away from the valve seat 81, the limiting piece 2 can be pressed against the pointer nut 83 in contact due to the pressing force provided by the first nut 4 on the limiting piece 2, the pointer nut 83 and the valve rod 82 connected with the pointer nut are ensured to be motionless, and the closing reliability of the diaphragm valve is ensured.
Further, as shown in fig. 1 to 4, the number of the first fasteners 3 may be two, and the first nuts 4 may be two and respectively disposed on the first fasteners 3, and may be disposed between the base 1 and the stopper 2 at intervals. The plurality of first fasteners 3 and the first nut 4 may make the compression of the valve stem 82 by the retainer 2 more reliable. In addition, under the condition that the limiting piece 2 and the base 1 are U-shaped plates, the first fastening pieces 3 can be respectively located at two sides of the U-shaped plates, so that balance of the limiting piece 2 when the pointer nut 83 is pressed is guaranteed, and the situation that the limiting piece 2 is tilted on one side when the pointer nut 83 is pressed is prevented.
According to an embodiment of the present disclosure, as shown in fig. 1 to 4, the fixing portion further includes a second nut 5, the second nut 5 is disposed on the first fastener 3, one end of the first fastener 3 is used to be connected to the valve seat 81, and in case that there are a plurality of first fasteners 3, only one first fastener 3 may be connected to the valve seat 81, or a plurality of first fasteners 3 may be connected to the valve seat 81, which is not limited in the present disclosure. The second nut 5 is disposed on a side of the base 1 near the limiting member 2, and is used for limiting the base 1 between the second nut 5 and the valve seat 81. In the case where the number of the first fasteners 3 is plural, the second nuts 5 may be provided only on one first fastener 3 or may be provided on plural first fasteners 3, which is not limited in this disclosure. After the base 1 contacts with the valve seat 81, the first fastener 3 is screwed to mount the base 1 on the valve seat 81, and the second nut 5 is screwed again to ensure that the base 1 can be limited between the second nut 5 and the valve seat 81 so as to effectively support the limiting piece 2 connected through the first fastener 3 and ensure the reliability of the pressing of the limiting piece 2 on the pointer nut 83. In addition, the fixing portion may also include a second fastener 6, where the second fastener 6 is used to connect the base 1 to the valve seat 81, so as to ensure the installation of the base 1 and the valve seat 81. It is within the scope of the present disclosure that the compression device may be connected to the valve seat 81 by the first fastener 3 alone, or may be connected to the valve seat 81 by the second fastener 6 alone, with both the first fastener 3 and the second fastener 6 being connected to the valve seat 81. The first fastener 3 and the second fastener 6 may be bolts or screws, and the present disclosure is not limited thereto.
Further, as shown in fig. 3, when the pressing device is provided with the second fastening member 6, the fixing portion may further include a third nut 7, where the third nut 7 is disposed on the second fastening member 6 and located between the valve seat 81 and the base 1, for enhancing the firmness of the connection between the base 1 and the valve seat 81.
According to one embodiment of the present disclosure, as shown in fig. 1, 3 and 4, the base 1 and the limiting member 2 may be U-shaped plates, and an opening of the U-shaped plate is used for the valve rod 82 to pass through. The structure of U shaped plate can let closing device need not to pull down valve rod 82 when the installation, like this, when closing device installs, can directly push into the diaphragm valve with closing device, makes valve rod 82 get into for the opening part of two U shaped plates, until the U shaped plate contacts with the bottom of valve rod 82, can accomplish the installation after readjusting other parts of closing device. The installation is convenient, and the installation time and the labor can be saved.
According to an embodiment of the present disclosure, other components such as a pressure gauge may be disposed on the diaphragm valve, so in an experiment, in order to ensure that the pressing device does not affect other functions of the diaphragm valve, as shown in fig. 1 to 4, an avoidance gap 21 may be formed at an edge of the limiting member 2, and the avoidance gap 21 may be used for avoiding components of the diaphragm valve.
According to an embodiment of the present disclosure, the compressing device may be made of a metal material, and a metal material with a relatively high density such as iron and copper may be selected to ensure the installation firmness of the compressing device.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the embodiments described above, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (10)
1. A compression device for a diaphragm valve of a steam turbine, the compression device comprising:
the base is used for being connected with the valve seat of the diaphragm valve and arranged around the valve rod of the diaphragm valve; and
The limiting piece is connected with the base, and the limiting piece is used for being arranged around the valve rod and located on one side of the pointer nut of the valve rod and used for providing force for enabling the pointer nut to press against the valve seat.
2. The compression device for a diaphragm valve of a steam turbine of claim 1, further comprising a fixing portion for connecting the base and the valve seat, and the base and the stopper are disposed on the fixing portion at a spacing.
3. The compression device for a diaphragm valve of a steam turbine of claim 2, wherein the fixing portion includes:
The base and the limiting piece are both movably arranged on the first fastening piece; and
The first nut is arranged on the first fastener, is positioned on one side, far away from the pointer nut, of the limiting piece and is used for providing force for enabling the limiting piece to press the pointer nut.
4. A compression device for a diaphragm valve of a steam turbine according to claim 3, wherein the number of the first fastening members is two, and the first fastening members are arranged between the base and the limiting member at intervals, and the number of the first nuts is two, and the first nuts are respectively arranged on the first fastening members.
5. A compression device for a diaphragm valve of a steam turbine according to claim 3, wherein the fixing portion further comprises a second nut provided on the first fastener, one end of the first fastener being adapted to be connected to the valve seat, the second nut being provided on a side of the base adjacent to the stopper for restricting the base between the second nut and the valve seat.
6. A compression device for a diaphragm valve of a steam turbine according to claim 3, wherein the securing portion further comprises a second fastener for attaching the base to the valve seat.
7. The compression device for a diaphragm valve of a steam turbine of claim 6, wherein the securing portion further comprises a third nut disposed on the second fastener and between the valve seat and the base.
8. The compression device for a diaphragm valve of a steam turbine of claim 1, wherein the base and the limiting member are both U-shaped plates, and an opening of the U-shaped plates is used for accommodating the valve rod.
9. The compression device for a diaphragm valve of a steam turbine according to claim 1, wherein an avoidance gap is formed at the edge of the limiting piece, and the avoidance gap is used for avoiding a part of the diaphragm valve.
10. The compression device for a diaphragm valve of a steam turbine of claim 1, wherein the compression device is a metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323103772.1U CN220980487U (en) | 2023-11-16 | 2023-11-16 | Compression device for diaphragm valve of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323103772.1U CN220980487U (en) | 2023-11-16 | 2023-11-16 | Compression device for diaphragm valve of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220980487U true CN220980487U (en) | 2024-05-17 |
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ID=91038197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323103772.1U Active CN220980487U (en) | 2023-11-16 | 2023-11-16 | Compression device for diaphragm valve of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220980487U (en) |
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2023
- 2023-11-16 CN CN202323103772.1U patent/CN220980487U/en active Active
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