CN108361081B - Unloading protection device for back pressure type centripetal turbine - Google Patents
Unloading protection device for back pressure type centripetal turbine Download PDFInfo
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- CN108361081B CN108361081B CN201810372608.5A CN201810372608A CN108361081B CN 108361081 B CN108361081 B CN 108361081B CN 201810372608 A CN201810372608 A CN 201810372608A CN 108361081 B CN108361081 B CN 108361081B
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- pipeline
- adjusting
- oil inlet
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- block
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- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- F01D21/16—Trip gear
- F01D21/18—Trip gear involving hydraulic means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
- Hydraulic Turbines (AREA)
Abstract
The application relates to an unloading protection device for a back pressure type centripetal turbine, which comprises a base, wherein an adjusting block is horizontally arranged at the upper end of the base, an adjusting cavity is formed in the adjusting block along the length direction, an adjusting mechanism is embedded in the adjusting cavity, and the adjusting mechanism comprises a pushing rod, a first connecting block, a spring, a second connecting block, a needle valve and a stop block; the lower extreme of base sets up the pressure oil inlet port, and the pressure oil inlet port passes through the regulation chamber of pipeline connection. The unloading protection device for the back pressure type centripetal turbine has a simple structure, ensures that the pressure in the lower cavity of the oil motor is rapidly discharged when a unit is stopped or tripped, reduces the impact pressure on the oil motor, solves the problem of hysteresis of the oil motor, and prolongs the service life of the oil motor, thereby ensuring the stable use of the whole back pressure type centripetal turbine.
Description
Technical Field
The application relates to the technical field of back pressure type centripetal turbines, in particular to an unloading protection device for a back pressure type centripetal turbine.
Background
With the continuous development of society, the power construction industry has rapidly developed. In the construction of electricity, various devices are often used, wherein a back pressure centripetal turbine is an important component. The back pressure type centripetal turbine has long service life, and can greatly improve the utilization efficiency of fuel, so that the back pressure type centripetal turbine is widely used. However, in the long-term use process, when the emergency stop or trip device occurs to the equipment unit, the execution of the oil motor usually has great hysteresis, the pressure in the lower chamber in the oil motor cannot be rapidly released, great impact is caused to the cylinder body of the oil motor, and the service life of the whole oil motor is seriously influenced.
Disclosure of Invention
The application aims to solve the technical problems that: in order to solve the problems in the prior art, the unloading protection device for the back pressure type centripetal turbine is simple in structure, and capable of guaranteeing that the pressure in a lower cavity of an oil motor is rapidly discharged when a unit is stopped or tripped, reducing the impact pressure on the oil motor, solving the problem of hysteresis of the oil motor, prolonging the service life of the oil motor, and guaranteeing the stable use of the whole back pressure type centripetal turbine.
The technical scheme adopted for solving the technical problems is as follows: the unloading protection device for the back pressure type centripetal turbine comprises a base, wherein an adjusting block is horizontally arranged at the upper end of the base, an adjusting cavity is formed in the adjusting block along the length direction, an adjusting mechanism is arranged in the adjusting cavity in an embedded mode, the adjusting mechanism comprises a pushing rod, a first connecting block, a spring, a second connecting block, a needle valve and a stop block, one end of the pushing rod is inserted into the end of the adjusting block and then is fixedly connected with the first connecting block, one side of the first connecting block is connected with the second connecting block through the spring, the needle valve is fixed on one side of the second connecting block, and the stop block is arranged in the adjusting cavity along the circumferential direction on one side of the needle valve; the lower end of the base is provided with a pressure oil inlet, and the pressure oil inlet is connected with the adjusting cavity through a pipeline.
Further limited, in the above technical scheme, an oil return pipeline is further arranged on one side of the pressure oil inlet on the base, and the oil return pipeline is communicated with a pipeline communicating the pressure oil inlet with the adjusting cavity; this is designed to facilitate the return flow of oil into the pressure oil inlet port.
Further defined, in the above technical solution, a cup-shaped slide valve is further disposed on the pipe connecting the pressure oil inlet port and the adjusting chamber; the oil inlet amount and the oil return amount can be adjusted.
Further limited, in the above technical solution, the oil return pipe is further communicated with the adjusting cavity through a first pipe; the residual oil in the adjusting cavity can be discharged rapidly.
Further limited, in the above technical scheme, a blocking oil inlet is further formed in the other side of the pressure oil inlet on the base, and the blocking oil inlet is connected with the adjusting cavity through a pipeline.
Further limited, in the above technical scheme, the side wall of the base is fixed with an air pump, the air pump is connected with a pipeline where the cup-shaped slide valve is located through a pipeline, an air injection mechanism is arranged on the side wall of the pipeline where the cup-shaped slide valve is located, and the air pump is communicated with the air injection mechanism.
Further limited, in the above technical scheme, the air injection mechanism comprises an arc-shaped pipeline and a connecting pipe, wherein the arc-shaped pipeline is arranged in an up-down parallel manner, the arc-shaped pipelines are connected through the connecting pipe which is arranged vertically, and a plurality of air injection ports are arranged on one side of the connecting pipe, facing the cup-shaped slide valve.
The beneficial effects of the application are as follows: the unloading protection device for the back pressure type centripetal turbine has a simple structure, ensures that the pressure in the lower cavity of the oil motor is rapidly discharged when a unit is stopped or tripped, reduces the impact pressure on the oil motor, solves the problem of hysteresis of the oil motor, and prolongs the service life of the oil motor, thereby ensuring the stable use of the whole back pressure type centripetal turbine.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present application;
fig. 2 is a schematic structural view of the air injection mechanism in the present application.
The reference numerals in the drawings are: 1. the device comprises a base, 2, an adjusting block, 3, an adjusting cavity, 4, a push rod, 5, a first connecting block, 6, a spring, 7, a second connecting block, 8, a needle valve, 9, a stop block, 10, a pressure oil inlet, 11, an oil return pipeline, 12, a cup-shaped slide valve, 13, a first pipeline, 14, a shutoff oil inlet, 15, an air pump, 16, an arc-shaped pipeline, 17, a connecting pipe, 18 and an air nozzle.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the application more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
In the description of the present application, it should be understood that the terms "one side", "another side", "two sides", "middle", "inner side", "upper end", "lower end", "upper", "lower", "top", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
The unloading protection device for the back pressure type centripetal turbine is shown in fig. 1 and 2, and comprises a base 1, wherein an adjusting block 2 is horizontally arranged at the upper end of the base 1, an adjusting cavity 3 is formed in the adjusting block 2 along the length direction, an adjusting mechanism is arranged in the adjusting cavity 3 in an embedded mode, the adjusting mechanism comprises a pushing rod 4, a first connecting block 5, a spring 6, a second connecting block 7, a needle valve 8 and a stop block 9, one end of the pushing rod 4 is fixedly connected with the first connecting block 5 after being inserted into the end part of the adjusting block 2, one side of the first connecting block 5 is connected with the second connecting block 7 through the spring 6, one side of the second connecting block 7 is fixedly provided with the needle valve 8, and one side of the needle valve 8 is positioned in the adjusting cavity 3 along the circumferential direction and is provided with the stop block 9; the lower end of the base 1 is provided with a pressure oil inlet 10, and the pressure oil inlet 10 is connected with the adjusting cavity 3 through a pipeline.
An oil return pipeline 11 is further arranged on one side of the pressure oil inlet 10 on the base 1, and the oil return pipeline 11 is communicated with a pipeline of the pressure oil inlet 10 communicated with the adjusting cavity 3. A cup-shaped slide valve 12 is also provided on the conduit of the pressure oil inlet port 10 connected to the regulating chamber 3. The oil return pipeline 11 is also communicated with the regulating cavity 3 through a first pipeline 13. The other side of the base 1, which is positioned at the pressure oil inlet 10, is also provided with a blocking oil inlet 14, and the blocking oil inlet 14 is connected with the adjusting cavity 3 through a pipeline. The side wall of the base 1 is fixedly provided with an air pump 15, the air pump 15 is connected with a pipeline where the cup-shaped slide valve 12 is located through a pipeline, an air injection mechanism is arranged on the side wall of the pipeline where the cup-shaped slide valve 12 is located, and the air pump 15 is communicated with the air injection mechanism. The air injection mechanism comprises an arc-shaped pipeline 16 and a connecting pipe 17, wherein the arc-shaped pipeline 16 is arranged up and down in parallel, the arc-shaped pipelines 16 are connected through the connecting pipe 17 which is arranged vertically, and a plurality of air injection ports 18 are arranged on one side of the connecting pipe 17 facing the cup-shaped slide valve 12.
Referring to fig. 2, in the application, an air injection mechanism is further arranged for the cup-shaped slide valve 12, so that the problem of blockage or imprecise closing caused by long-time operation of the cup-shaped slide valve 12 can be prevented, and the stable and safe use of the cup-shaped slide valve 12 is ensured; the pipeline connecting the shielding oil inlet 14 with the adjusting cavity 3 is also connected with the pipeline connecting the pressure oil inlet 10 with the adjusting cavity 3 through the pipeline.
The use principle of the unloading protection device for the back pressure type centripetal turbine is as follows:
firstly, when the unit is stopped or tripped, the unit can be quickly pushed rightwards through the pushing rod 4, in the pushing process, the needle valve 8 can prop against the stop block 9, thus the entering of the pressure oil inlet 10 can be blocked, the pressure oil in the pressure oil inlet 10 can flow back through the oil return pipeline 11 to release the oil pressure, and the residual oil in the regulating cavity 3 can flow into the oil return pipeline 11 through the first pipeline 13, so that the problem of quick release of the pressure in the oil motor can be effectively solved, the problem of lagging operation of the pressure regulator is solved, the service life of the pressure regulator is prolonged, and the stable and safe use of the unloading protection device for the back pressure type centripetal turbine is ensured.
The foregoing description is only a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art, who is within the scope of the present application, should make equivalent substitutions or modifications according to the technical solution of the present application and the inventive concept thereof, and should be covered by the scope of the present application.
Claims (1)
1. An unloading protection device for a back pressure type centripetal turbine is characterized in that: the device comprises a base, wherein an adjusting block is horizontally arranged at the upper end of the base, an adjusting cavity is formed in the adjusting block along the length direction, an adjusting mechanism is arranged in the adjusting cavity in an embedded mode, the adjusting mechanism comprises a pushing rod, a first connecting block, a spring, a second connecting block, a needle valve and a stop block, one end of the pushing rod is inserted into the end part of the adjusting block and then is fixedly connected with the first connecting block, one side of the first connecting block is connected with the second connecting block through the spring, the needle valve is fixed on one side of the second connecting block, and the stop block is arranged in the adjusting cavity along the circumferential direction on one side of the needle valve; the lower end of the base is provided with a pressure oil inlet which is connected with the adjusting cavity through a pipeline; the side wall of the base is fixedly provided with an air pump, the air pump is connected with a pipeline where the cup-shaped slide valve is located through a pipeline, the side wall of the pipeline where the cup-shaped slide valve is located is provided with an air injection mechanism, and the air pump is communicated with the air injection mechanism; the air injection mechanism comprises an arc-shaped pipeline and a connecting pipe, wherein the arc-shaped pipeline is arranged in parallel up and down, the arc-shaped pipelines are connected through the connecting pipe which is vertically arranged, and a plurality of air injection ports are arranged on one side of the connecting pipe facing the cup-shaped slide valve; an oil return pipeline is further arranged on one side of the pressure oil inlet on the base and is communicated with a pipeline for communicating the pressure oil inlet with the adjusting cavity; a cup-shaped slide valve is further arranged on a pipeline connected with the pressure oil inlet and the adjusting cavity; the oil return pipeline is also communicated with the adjusting cavity through a first pipeline; the base on be located the opposite side of pressure oil inlet port and still set up the shutoff oil inlet port, shutoff oil inlet port pass through the pipe connection regulation chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810372608.5A CN108361081B (en) | 2018-04-24 | 2018-04-24 | Unloading protection device for back pressure type centripetal turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810372608.5A CN108361081B (en) | 2018-04-24 | 2018-04-24 | Unloading protection device for back pressure type centripetal turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108361081A CN108361081A (en) | 2018-08-03 |
| CN108361081B true CN108361081B (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810372608.5A Active CN108361081B (en) | 2018-04-24 | 2018-04-24 | Unloading protection device for back pressure type centripetal turbine |
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| CN (1) | CN108361081B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1675212A (en) * | 1925-10-16 | 1928-06-26 | Gen Electric | Elastic-fluid turbine |
| GB1541471A (en) * | 1975-06-20 | 1979-03-07 | Gen Electric | Emergency trip device |
| CN203702269U (en) * | 2014-03-12 | 2014-07-09 | 南京汽轮电机(集团)有限责任公司 | Low-pressure single-side hydraulic servo-motor |
| CN204805220U (en) * | 2015-05-27 | 2015-11-25 | 上海朝田实业有限公司 | Piston ultralow pressure overflow valve |
| CN205780049U (en) * | 2016-06-27 | 2016-12-07 | 江苏建筑职业技术学院 | Load adjustable shock resistance overflow valve |
| CN107355263A (en) * | 2017-05-16 | 2017-11-17 | 上海淦凌电力设备有限公司 | A kind of small machine highback pressure control system of water pump |
| CN208267915U (en) * | 2018-04-24 | 2018-12-21 | 长兴永能动力科技有限公司 | A kind of back pressure type centripetal turbine machine unloading protection equipment |
-
2018
- 2018-04-24 CN CN201810372608.5A patent/CN108361081B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1675212A (en) * | 1925-10-16 | 1928-06-26 | Gen Electric | Elastic-fluid turbine |
| GB1541471A (en) * | 1975-06-20 | 1979-03-07 | Gen Electric | Emergency trip device |
| CN203702269U (en) * | 2014-03-12 | 2014-07-09 | 南京汽轮电机(集团)有限责任公司 | Low-pressure single-side hydraulic servo-motor |
| CN204805220U (en) * | 2015-05-27 | 2015-11-25 | 上海朝田实业有限公司 | Piston ultralow pressure overflow valve |
| CN205780049U (en) * | 2016-06-27 | 2016-12-07 | 江苏建筑职业技术学院 | Load adjustable shock resistance overflow valve |
| CN107355263A (en) * | 2017-05-16 | 2017-11-17 | 上海淦凌电力设备有限公司 | A kind of small machine highback pressure control system of water pump |
| CN208267915U (en) * | 2018-04-24 | 2018-12-21 | 长兴永能动力科技有限公司 | A kind of back pressure type centripetal turbine machine unloading protection equipment |
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| CN108361081A (en) | 2018-08-03 |
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Effective date of registration: 20230925 Address after: 324000 No. 380, Longzhou Road, Longzhou street, Longyou County, Quzhou City, Zhejiang Province Applicant after: Longyou power supply company of State Grid Zhejiang Electric Power Co.,Ltd. Address before: 313000 Zhejiang Chengneng Intelligent Energy Science and Technology Industrial Park, Meishan Town, Changxing County, Huzhou City Applicant before: CHANGXING YONGNENG POWER TECHNOLOGY Co.,Ltd. |
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