CN210531280U - Separated control device for main steam valve oil-operated machine of steam turbine - Google Patents
Separated control device for main steam valve oil-operated machine of steam turbine Download PDFInfo
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- CN210531280U CN210531280U CN201920924941.2U CN201920924941U CN210531280U CN 210531280 U CN210531280 U CN 210531280U CN 201920924941 U CN201920924941 U CN 201920924941U CN 210531280 U CN210531280 U CN 210531280U
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- oil
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- connecting plate
- seat
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Abstract
A separate control device for a steam turbine main steam valve servomotor comprises a mounting seat for being mounted on the outer end face of one side of an oil cylinder of the servomotor, a depression extending towards one side far away from the oil cylinder is formed in the middle of one side, close to the oil cylinder, of the mounting seat, an oil channel is formed between the mounting seat and the outer end face of the oil cylinder, a connecting plate for covering the oil hole in the side wall of the oil cylinder is further arranged on one side, close to the oil cylinder, of the mounting seat, the connecting plate extends from one side edge of the mounting seat in the length direction to the middle of the mounting seat, so that the depression extends towards the inside of the mounting seat, through holes for mounting a slide valve seat are formed in the connecting plate and the side wall of the mounting seat opposite to the connecting plate, two ends of the slide valve seat are respectively arranged in the two through holes in a penetrating manner, one end, close to the oil cylinder, the valve cover is pressed at one end of the slide valve seat far away from the oil cylinder, and a through hole is formed in the valve cover and connected with an oil supply pipe connector set.
Description
Technical Field
The utility model relates to a steam turbine main steam valve servomotor field especially relates to a disconnect-type controlling means for steam turbine main steam valve servomotor.
Background
The steam turbine is a rotating machine which takes steam as power and converts the heat energy of the steam into mechanical work, is the most widely applied prime mover in the modern thermal power plant, and has the advantages of large single machine power, high efficiency, long service life and the like. The existing steam turbine main steam valve oil engine is provided with an oil cylinder, a control device capable of controlling the oil flow in the oil cylinder is installed on the side wall of the oil cylinder, generally, an oil hole is formed in the side wall of the oil cylinder, a slide valve seat and a slide valve are installed in the oil hole, and the slide valve can slide in the slide valve seat, so that the on-off and the oil flow of an oil passage in the oil cylinder are adjusted.
Due to the adoption of the structure, an oil duct needs to be reserved in the oil cylinder, the oil hole needs to be formed in the side wall of the oil cylinder, namely the control device and the oil cylinder are integrated, and the manufacturing method of the oil cylinder in the prior art is all integral casting forming, so that the oil duct and the oil hole need to be cast completely, casting defects are easily caused due to high casting difficulty, and due to the adoption of the integrated structure, the surface of the oil duct in the oil cylinder is difficult to perform sand cleaning and other treatments, the processing quality in the oil cylinder is difficult to meet the requirements, so that part of sand grains can be remained on the surface of the oil duct, and after the sand grains enter a turbine oil system in the flowing process of the oil, the impurity content in the oil can be increased, and the high-efficiency and.
SUMMERY OF THE UTILITY MODEL
Because the structure of adopting hydro-cylinder and controlling means integral type is owing to solved current steam turbine main steam valve servomotor, so the hydro-cylinder casting degree of difficulty is great and be difficult to carry out the problem of sand removal processing, the utility model provides a disconnect-type controlling means for steam turbine main steam valve servomotor.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: a separate control device for a steam turbine main steam valve servomotor comprises a mounting seat for being mounted on the outer end face of one side of an oil cylinder of the servomotor, a depression extending towards one side away from the oil cylinder is formed in the middle of the mounting seat close to one side of the oil cylinder, so that an oil channel is formed between the mounting seat and the outer end face of the oil cylinder, a connecting plate for covering an oil hole in the side wall of the oil cylinder is further arranged on one side of the mounting seat close to the oil cylinder, the connecting plate extends from one side edge of the mounting seat in the length direction to the middle of the mounting seat, so that the depression extends towards the inside of the mounting seat to a position between the connecting plate and the side wall of the mounting seat opposite to the connecting plate, a through hole for mounting a slide valve seat is formed in each of the connecting plate and the side wall of the mounting seat opposite to the connecting plate, the axes of the, the end, close to the oil cylinder, of the inner hole of the slide valve seat is aligned with the oil hole covered by the connecting plate, a slide valve capable of moving axially along the slide valve seat is arranged in the inner hole of the slide valve seat in a penetrating mode so as to adjust and control the oil passing amount in the oil duct, a valve cover is installed on one side, far away from the oil cylinder, of the mounting seat, the valve cover is arranged at one end, far away from the oil cylinder, of the slide valve seat in a pressing mode, a through hole is formed.
Preferably, the mounting seat is connected with the oil cylinder through a plurality of bolts, and the bolts are perpendicular to the outer end face of the oil cylinder.
Preferably, a gasket is arranged between the mounting seat and the oil cylinder, and a plurality of bolts penetrate through the gasket.
Preferably, the connecting plate and the mounting seat are of an integrally formed structure.
Preferably, the valve cover is connected with one end, far away from the oil cylinder, of the mounting seat through a plurality of countersunk head screws.
Preferably, an oil return pipe joint set is penetratingly connected to the side wall, far away from the slide valve seat, of the mounting seat.
According to the technical scheme, the beneficial effects of the utility model are that:
the utility model provides a separate control device for a steam turbine main steam valve servomotor, which changes the existing oil cylinder with an integrated structure into a separate structure that the oil cylinder is matched and connected with a mounting seat, so that the oil duct originally positioned in the oil cylinder can be formed by matching and enclosing the outer wall of the oil cylinder and the side wall of the mounting seat, and the hole originally positioned on the side wall of the oil cylinder and used for installing a slide valve seat is also changed into a through hole on the mounting seat, due to the improvement of the structure, the difficulty of casting the oil cylinder can be greatly reduced, and the difficult problem that the oil duct in the oil cylinder needs to be cleaned is thoroughly avoided, therefore, the utility model adopts the mounting seat to separate the control device from the oil cylinder of the servomotor, effectively reduces the casting defects and the cleaning difficulty of the oil cylinder of the servomotor, simultaneously reduces the processing difficulty of the oil cylinder and the control device, and ensures the processing quality of the oil duct, the unfavorable condition that sand grains enter oil and cause the increase of impurity content in the oil is avoided, the problems of difficult casting and incomplete sand removal of the existing oil cylinder with an integrated structure are effectively eliminated, the efficient and safe operation of the steam turbine is ensured, meanwhile, the device has high generalization degree, is convenient for large-scale production, and reduces the processing difficulty and the production cost of the servomotor.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of a prior art servomotor cylinder control device.
The labels in the figure are: 1. the oil cylinder comprises an oil cylinder 2, a mounting seat 201, a connecting plate 3, an oil duct 4, a slide valve seat 5, a slide valve 6, a valve cover 7, an oil supply pipe connector group 8, a gasket 9, a countersunk screw 10 and an oil return pipe connector group.
Detailed Description
Referring to the drawings, the specific embodiments are as follows:
as shown in fig. 2, a schematic diagram of a control device for an oil cylinder of an oil-powered machine in the prior art is shown, an oil cylinder 1 of an integrated structure is adopted, an oil passage 3 is arranged in the oil cylinder 1, a through hole is formed in the side wall of the oil cylinder 1, a slide valve seat 4 is installed in the through hole, a slide valve 5 capable of sliding along the axial direction of the slide valve seat 4 is arranged in the slide valve seat 4, a valve cover 6 is fixed on the outer wall of the oil cylinder 1 through a countersunk screw 9 so as to tightly push the slide valve seat 4, an oil supply pipe joint group 7 is connected to the valve cover 6 in a penetrating manner, and when the oil cylinder 1 is fed through the oil supply pipe joint group 7, the slide valve 5 is controlled to slide to different positions in the slide. The disadvantage of this structure is that the oil passage 3 must be located inside the cylinder 1, which makes the structure of the cylinder 1 complicated and casting difficult, and the inner walls of the oil passage 3 are also located inside the cylinder 1, so that it is difficult to sand-clean the inner walls of the oil passage 3.
As shown in FIG. 1, in order to provide a separate control device for a main steam valve servomotor of a steam turbine of the present invention, the separate control device comprises a mounting seat 2 for being mounted on an outer end surface of one side of a cylinder 1 of the servomotor, the mounting seat 2 is connected with the cylinder 1 through a plurality of bolts, a gasket 8 is arranged between the mounting seat 2 and the cylinder 1, the plurality of bolts are all perpendicular to the outer end surface of the cylinder 1 and penetrate through the gasket 8, a recess extending to one side away from the cylinder 1 is provided in a middle portion of one side of the mounting seat 2 close to the cylinder 1, thereby forming an oil duct 3 between the mounting seat 2 and the outer end face of the oil cylinder 1, wherein the side of the mounting seat 2 close to the oil cylinder 1 is also provided with a connecting plate 201 for covering an oil hole on the side wall of the oil cylinder 1, the connecting plate 201 extends from the edge of one side of the mounting seat 2 in the length direction to the middle of the mounting seat 2, so that the recess extends inwardly of the mounting 2 between the web 201 and the side wall of the mounting 2 opposite the web 201. In this embodiment, the connecting plate 201 and the mounting base 2 are integrally formed, and various manners such as threaded connection may be adopted in actual use.
A through hole for installing the sliding valve seat 4 is formed in the connecting plate 201 and the side wall of the installation seat 2 opposite to the connecting plate 201, the axes of the two through holes coincide with the axes of the oil holes covered by the connecting plate 201, the two ends of the sliding valve seat 4 are installed in the two through holes in a penetrating manner respectively, one end of the inner hole of the sliding valve seat 4 close to the oil cylinder 1 is aligned with the oil hole covered by the connecting plate 201, a sliding valve 5 capable of moving along the axial direction of the sliding valve seat 4 is arranged in the inner hole of the sliding valve seat 4 in a penetrating manner, a valve cover 6 is installed on one side, far away from the oil cylinder 1, of the installation seat 2 through a plurality of countersunk head screws 9 in a matching manner, the valve cover 6 is arranged at one end, far away from the oil cylinder 1. When oil is supplied to the oil cylinder 1 through the oil supply pipe joint group 7, the control slide valve 5 slides to different positions in the slide valve seat 4, and the on-off and oil passing amount of the control oil channel 3 can be adjusted.
In the embodiment, the oil cylinder 1 and the mounting seat 2 are connected in a matched manner in a separated structure, so that the structure of the oil cylinder 1 is greatly simplified, the casting difficulty is reduced, the inner wall of the oil duct 3 is changed from the inner part of the oil cylinder 1 into the outer walls of the oil cylinder 1 and the mounting seat 2, and the difficulty that the inner part of the oil cylinder 1 needs to be cleaned when the inner wall of the oil duct 3 is cleaned is avoided; in addition, the through hole for installing the sliding valve seat 4 is also transferred from the oil cylinder 1 to the installation seat 2, and can be manufactured together with the installation seat 2 in a machining mode without being integrally cast with the oil cylinder 1; moreover, the oil cylinder 1 is provided with a hole for installing the slide valve seat 4 so as to supply oil to flow in, and an oil return hole for supplying oil to flow out is also inevitably required to be provided, and the oil return hole also needs to be cast together with the whole oil cylinder 1 in the prior art, but in the embodiment, the oil return hole can be also arranged on the installation seat 2, namely, the oil return pipe joint group 10 is connected on the side wall of the installation seat 2 far away from the slide valve seat 4 in a penetrating manner, so that the structure of the oil cylinder 1 can be further simplified, and the casting difficulty of the oil cylinder 1 is reduced.
Claims (6)
1. A disconnect-type controlling means for steam turbine main steam valve servomotor characterized in that: the oil cylinder mounting structure comprises a mounting seat (2) arranged on the outer end face of one side of an oil cylinder (1) of an oil engine, wherein the middle part of one side, close to the oil cylinder (1), of the mounting seat (2) is provided with a recess extending towards one side far away from the oil cylinder (1), so that an oil duct (3) is formed between the mounting seat (2) and the outer end face of the oil cylinder (1), one side, close to the oil cylinder (1), of the mounting seat (2) is also provided with a connecting plate (201) used for covering an oil hole in the side wall of the oil cylinder (1), the connecting plate (201) extends towards the middle part of the mounting seat (2) from one side edge of the length direction of the mounting seat (2), so that the recess extends towards the inside of the mounting seat (2) to the position between the connecting plate (201) and the side wall of the mounting seat (2) opposite to the connecting plate (201), and the connecting plate (201) and, the axis of two through-holes all covers the oilhole axis coincidence of establishing with connecting plate (201), wear to establish respectively and install in two through-holes at the both ends of slide valve seat (4), the oilhole that one end that makes slide valve seat (4) hole be close to hydro-cylinder (1) and connecting plate (201) lid were established aligns, wear to be equipped with in slide valve seat (4) hole and follow slide valve seat (4) axial motion's spool valve (5), so that the logical oil mass in regulation control oil duct (3), install valve gap (6) of installing of hydro-cylinder (1) one side is kept away from in mount pad (2), valve gap (6) are pressed and are established the one end of keeping away from hydro-cylinder (1) in slide valve seat (4), seted up the through-hole on valve gap (6) and be connected with fuel feeding.
2. The split control apparatus for a main steam valve servomotor of a steam turbine according to claim 1, wherein: the mounting seat (2) is connected with the oil cylinder (1) through a plurality of bolts, and the bolts are perpendicular to the outer end face of the oil cylinder (1).
3. The split control apparatus for a main steam valve servomotor of a steam turbine according to claim 2, wherein: be equipped with gasket (8) between mount pad (2) and hydro-cylinder (1), a plurality of bolts all run through gasket (8).
4. The split control apparatus for a main steam valve servomotor of a steam turbine according to claim 1, wherein: the connecting plate (201) and the mounting seat (2) are of an integrally formed structure.
5. The split control apparatus for a main steam valve servomotor of a steam turbine according to claim 1, wherein: the valve cover (6) is connected with one end, far away from the oil cylinder (1), of the mounting base (2) through a plurality of sunk screws (9).
6. The split control apparatus for a main steam valve servomotor of a steam turbine according to claim 1, wherein: an oil return pipe joint group (10) is connected to the side wall, far away from the slide valve seat (4), of the mounting seat (2) in a penetrating mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920924941.2U CN210531280U (en) | 2019-06-19 | 2019-06-19 | Separated control device for main steam valve oil-operated machine of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920924941.2U CN210531280U (en) | 2019-06-19 | 2019-06-19 | Separated control device for main steam valve oil-operated machine of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210531280U true CN210531280U (en) | 2020-05-15 |
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ID=70595389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920924941.2U Active CN210531280U (en) | 2019-06-19 | 2019-06-19 | Separated control device for main steam valve oil-operated machine of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210531280U (en) |
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2019
- 2019-06-19 CN CN201920924941.2U patent/CN210531280U/en active Active
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