CN216811797U - Tool for preventing unexpected shutdown in nuclear power station steam turbine generator test - Google Patents
Tool for preventing unexpected shutdown in nuclear power station steam turbine generator test Download PDFInfo
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- CN216811797U CN216811797U CN202123134776.7U CN202123134776U CN216811797U CN 216811797 U CN216811797 U CN 216811797U CN 202123134776 U CN202123134776 U CN 202123134776U CN 216811797 U CN216811797 U CN 216811797U
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Abstract
The utility model belongs to the technical field of nuclear power station steam turbine generators, and particularly relates to a tool for preventing unexpected shutdown in a nuclear power station steam turbine generator test, which comprises the following components: the steel pipe comprises a main steel pipe body, a vertical steel pipe and a fixed channel steel; the main steel pipe is L-shaped, and one end of the vertical steel pipe is welded on one side of the main steel pipe; the fixed channel steel is welded on the main steel pipe and used for fixing a test rod for a test of the turbonator; the two ends of the main steel pipe and the other end of the vertical steel pipe are provided with fastening components, and the tool is fastened with the shell of the test rod. The device can be widely applied to the same-row nuclear power industry, and the integral operation stability and the economical efficiency of the nuclear power unit are improved.
Description
Technical Field
The application belongs to the technical field of nuclear power station steam turbine generators, and particularly relates to a tool for preventing unexpected shutdown in a nuclear power station steam turbine generator test.
Background
An electro-hydraulic regulation system (ETS) is adopted by a steam turbine generator unit of a certain nuclear power station and is mainly used for monitoring important operation parameters of the steam turbine generator, when the operation parameters exceed a set safe operation limit value, the steam turbine generator control system cannot control the steam turbine generator within a normal range, all steam inlet valves are closed, the steam turbine generator is stopped safely, and the steam turbine generator is protected from being damaged. Meanwhile, in order to ensure the reliability of the ETS, the ETS is also provided with an online test function, and an on-site detection element and an actuating mechanism (such as a solenoid valve) are subjected to online test.
The shutdown actuator of the ETS consists of four shutdown electromagnetic valves which are arranged in a two or one and mode. When the turbonator normally operates, the four stop electromagnetic valves are electrified, emergency trip oil is in a high-pressure state, and unloading valves on a main throttle valve and a regulating valve of the turbonator are in a closed state. When the ETS sends a shutdown instruction, the four shutdown electromagnetic valves lose power, the danger jump alarm oil is connected for oil discharge, the unloading valves on the main throttle valve and the regulating valve are opened, the main throttle valve and the regulating valve are quickly closed, and the unit is shut down.
As the four stop electromagnetic valves are arranged in a 'two or one and' mode, the SV-1 and the SV-3 form a channel 1, and the SV-2 and the SV-4 form a channel 2, the unit can be stopped as long as one electromagnetic valve in each of the two channels acts. That is, if any one shutdown solenoid valve fails, the unit can still be reliably shut down and no false trip will occur. Moreover, the online test of the shutdown electromagnetic valve can be realized.
One of the online tests is a mechanical overspeed protection test, also called a turbonator oil injection test, and the test aims to test the flying oil pressure of an impactor for overspeed protection and verify that a critical tripping piston valve can be reliably opened after the impactor flies out, so that an emergency tripping oil way is communicated with oil for discharging. The test is currently performed once a month, and during the test, a site operator is required to be assigned to position the turbine generator head for a long time, and the test rod is manually pulled up to the test position on site and kept still. If the person looses hands in the test process or the test rod is separated from the test position, the unexpected shutdown event of the unit can be caused. Because the frequency of the test is high, the uncertain factors of the operator are superposed, and therefore, the risk is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a tool for preventing unexpected shut down in nuclear power station turbo generator is experimental, solves the unusual circumstances such as personnel's loose hand or test rod throw off from the test position appearing in the turbo generator oiling test process, leads to the unexpected problem of shut down incident of unit.
The technical scheme for realizing the purpose of the application is as follows:
the embodiment of the application provides a instrument that is arranged in preventing unexpected shut down in nuclear power station turbine generator test, the instrument includes: the steel pipe comprises a main steel pipe body, a vertical steel pipe and a fixed channel steel;
the main steel pipe is L-shaped, and one end of the vertical steel pipe is welded on one side of the main steel pipe;
the fixed channel steel is welded on the main steel pipe and used for fixing a test rod for a test of the turbonator;
and fastening components are arranged at the two ends of the main steel pipe and the other end of the vertical steel pipe and used for fastening the tool with the shell of the test rod.
Optionally, the main body steel pipe includes: a first steel pipe, a second steel pipe and a third steel pipe;
one end of the first steel pipe is welded with one end of the second steel pipe, and the other end of the second steel pipe is welded with one end of the third steel pipe;
the fixed channel steel is welded on the second steel pipe, and the vertical steel pipe is welded on the first steel pipe;
and one end of the first steel pipe and the other end of the third steel pipe are both provided with the fastening assembly.
Alternatively to this, the first and second parts may,
an included angle between the first steel pipe and the second steel pipe is 102 degrees;
and an included angle of 90 degrees is formed between the first steel pipe and the third steel pipe.
Alternatively to this, the first and second parts may,
the length of the first steel pipe is 80 mm;
the length of the second steel pipe is 70 mm;
the length of the third steel pipe is 120 mm.
Alternatively to this, the first and second parts may,
the outer diameters of the first steel pipe, the second steel pipe and the third steel pipe are all 25mm, and the thicknesses of the first steel pipe, the second steel pipe and the third steel pipe are all 2 mm.
Alternatively to this, the first and second parts may,
the vertical steel pipe is located 50mm of the first steel pipe, and the height of the vertical steel pipe is 70 mm.
Alternatively to this, the first and second parts may,
the fixed channel steel is 1mm in thickness, 35mm in height, 90mm in length and 12mm in width.
Optionally, the fastening assembly includes: a rubber base, a nut and a screw;
the two ends of the main steel pipe and the inner part of the other end of the vertical steel pipe are provided with pipe-in nuts matched with the screws;
the screw is screwed into the nut in the pipe;
the rubber base is fixed on the head of the screw through the nut.
Alternatively to this, the first and second parts may,
the diameter of the screw is 12mm, and the height of the screw is 70 mm;
the rubber base is 50mm in diameter and 25mm high, and the surface adjacent to the nut is chamfered;
the height of the nut is 10 mm.
The beneficial technical effect of this application lies in:
(1) the embodiment of the application provides a tool for preventing unexpected halt in a nuclear power station turbonator test, can be widely applied to the same-row nuclear power industry, improves the overall operation stability and economy of a nuclear power unit, avoids unexpected halt in the turbonator test process, and improves the utilization hours of nuclear power equipment of the unit, so that the generated energy of the unit is improved.
(2) The embodiment of the application provides a tool for preventing unexpected shut down in nuclear power station turbo generator is experimental, personnel in the time of can replacing the experiment save a manpower, improve the reliability simultaneously, prevent the unexpected shut down incident that the manual work of loosing caused.
Drawings
FIG. 1 is a schematic structural diagram of a test rod in a test of a steam turbine generator in a nuclear power plant in an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a tool for preventing unexpected shutdown in a nuclear power plant steam turbine generator test according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a use state of a tool for preventing unexpected shutdown in a test of a steam turbine generator in a nuclear power plant according to an embodiment of the present application.
In the figure:
1-main body steel pipe; 11-a first steel tube; 12-a second steel tube; 13-a third steel tube;
2-vertical steel pipes;
3, fixing channel steel;
4-a fastening assembly; 41-a rubber base; 42-a nut; 43-screws; 44-a nut in the tube;
51-a reset lever; 52-test rod; 53-housing.
Detailed Description
In order to make the technical solutions in the embodiments of the present application more comprehensible to those skilled in the art, the following description will be made in detail and completely with reference to the accompanying drawings in the embodiments of the present application. It should be apparent that the embodiments described below are only some of the embodiments of the present application, and not all of them. All other embodiments that can be derived by a person skilled in the art from the embodiments described herein without inventive step are within the scope of the present application.
In order to solve the prior art problem, the embodiment of the application provides a tool for preventing unexpected shut down in nuclear power station turbine generator test for fix the test rod accuracy in experimental position in the process of the test, and guarantee can not kick-back. And the tool is moved away after the test is finished, so that the safe and stable operation of the steam turbine generator unit during the test is ensured. For convenience of understanding, fig. 1 is a schematic structural diagram of a test rod in a nuclear power plant steam turbine generator test in an embodiment of the present application.
The inventor of the application determines the specific size of the test rod of the machine head of the steam turbine generator unit and the angle of the test rod at the test position through actual measurement and mechanical property analysis research of related materials, and designs a tool meeting the requirements through drawing software according to the force required by stably fixing the test rod. The test rod can be flexibly and conveniently moved out after the test is finished, so that the state of the test rod in normal operation is not influenced. During the unit size maintenance, the test tool is verified by using the shutdown time window of the steam turbine, the optimized scheme is finally selected, the reliability of the test tool is determined, the test tool is well verified on site, and the expected setting effect is achieved.
Based on the above, in order to clearly and specifically explain the above advantages of the present application, the following description of the embodiments of the present application will be made with reference to the accompanying drawings.
Referring to fig. 2, the drawing is a schematic structural diagram of a tool for preventing unexpected shutdown in a nuclear power plant steam turbine generator test according to an embodiment of the present application.
The utility model provides a tool for preventing unexpected shut down in nuclear power station turbo generator is experimental that this application embodiment provides includes: the steel pipe comprises a main steel pipe 1, a vertical steel pipe 2 and a fixed channel steel 3;
the main body steel pipe 1 is L-shaped, and one end of the vertical steel pipe 2 is welded on one side of the main body steel pipe 1;
the fixed channel steel 3 is welded on the main steel pipe 1 and used for fixing a test rod for a test of the turbonator;
both ends of main part steel pipe 1 and the other end of vertical steel pipe 2 all are provided with fastening components 4 for fasten this instrument and the shell of test rod.
In some possible implementation manners of the embodiment of the present application, the main steel pipe 1 includes: a first steel pipe 11, a second steel pipe 12, and a third steel pipe 13;
one end of the first steel pipe 11 is welded to one end of the second steel pipe 12, and the other end of the second steel pipe 12 is welded to one end of the third steel pipe 13;
the fixed channel steel 3 is welded on the second steel pipe 12, and the vertical steel pipe 2 is welded on the first steel pipe 11;
one end of the first steel pipe 11 and the other end of the third steel pipe 13 are both provided with a fastening assembly 4.
In a specific example, the included angle between the first steel pipe 11 and the second steel pipe 12 is 102 °;
the first steel pipe 11 and the third steel pipe 13 form an included angle of 90 degrees.
In one example, the length of the first steel pipe 11 may be 80 mm; the length of the second steel tube 12 may be 70 mm; the length of the third steel pipe 13 may be 120 mm.
In another example, the first steel pipe 11, the second steel pipe 12, and the third steel pipe 13 each have an outer diameter of 25mm and a thickness of 2 mm.
In some possible implementations of the embodiment of the present application, the vertical steel pipe 2 is located 50mm from the first steel pipe 11, and the vertical steel pipe 2 is 70mm high.
In one example, the channel 3 is 1mm thick, 35mm high, 90mm long and 12mm wide.
In some possible implementations of the embodiment of the present application, the fastening assembly 4 includes: a rubber mount 41, a nut 42, and a screw 43;
the two ends of the main steel pipe 1 and the inner part of the other end of the vertical steel pipe 2 are provided with pipe-in nuts 44 matched with the screws;
the screw 43 is screwed into the inner nut 44;
the rubber mount 41 is fixed to the head of the screw 43 by a nut 42.
In one example, the screw 43 has a diameter of 12mm and a height of 70 mm;
the rubber base 41 has a size of 50mm in diameter and 25mm in height, and is chamfered on the face adjacent to the nut 43;
the height of the nut 43 is 10 mm.
Before the experiment, only need on-the-spot operator to utilize this instrument with the test rod fixed, through the rotatory back fastening of contact with the test rod shell of three screw 43, fix the test rod accuracy in experimental position in the test process, guarantee the reliable experimental position that is in of test rod to guarantee can not kick-back, take out experimental specialized tool after the experiment, thereby reach the state that does not influence the test rod when normal operation. FIG. 3 is a schematic diagram of a use state of a tool for preventing unexpected shutdown in a test of a steam turbine generator in a nuclear power plant according to an embodiment of the present application.
The tool for preventing the unexpected shutdown in the test of the steam turbine generator of the nuclear power station can be widely applied to the same nuclear power industry, the integral operation stability and the economical efficiency of the Chinese nuclear power unit are improved, and the unexpected shutdown in the test process of the steam turbine is avoided; the utilization hours of nuclear power equipment of the unit are increased, so that the generating capacity of the unit is increased. The tool for preventing unexpected shutdown in nuclear power station turbine generator test provided by the embodiment of the application can replace personnel in the test, save a manpower, improve the reliability and prevent unexpected shutdown events caused by manual release.
The present application has been described in detail with reference to the drawings and examples, but the present application is not limited to the above examples, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application. The prior art can be used for all the matters not described in detail in this application.
Claims (9)
1. A tool for preventing unintended shutdown in nuclear power plant steam turbine generator testing, the tool comprising: the steel pipe comprises a main steel pipe body, a vertical steel pipe and a fixed channel steel;
the main steel pipe is L-shaped, and one end of the vertical steel pipe is welded on one side of the main steel pipe;
the fixed channel steel is welded on the main steel pipe and used for fixing a test rod for a test of the turbonator;
the two ends of the main steel pipe and the other end of the vertical steel pipe are provided with fastening assemblies used for fastening the tool with the shell of the test rod.
2. The tool for preventing unexpected shutdown in nuclear power plant turbine generator testing as claimed in claim 1, wherein the main body steel pipe comprises: a first steel pipe, a second steel pipe and a third steel pipe;
one end of the first steel pipe is welded with one end of the second steel pipe, and the other end of the second steel pipe is welded with one end of the third steel pipe;
the fixed channel steel is welded on the second steel pipe, and the vertical steel pipe is welded on the first steel pipe;
and one end of the first steel pipe and the other end of the third steel pipe are both provided with the fastening assembly.
3. The tool for preventing unintended shutdown in nuclear power plant steam turbine generator testing of claim 2,
an included angle between the first steel pipe and the second steel pipe is 102 degrees;
and an included angle of 90 degrees is formed between the first steel pipe and the third steel pipe.
4. The tool for preventing unexpected shutdown in nuclear power plant turbine generator testing according to claim 3,
the length of the first steel pipe is 80 mm;
the length of the second steel pipe is 70 mm;
the length of the third steel pipe is 120 mm.
5. The tool for preventing unexpected shutdown in nuclear power plant turbine generator testing according to claim 4,
the outer diameters of the first steel pipe, the second steel pipe and the third steel pipe are all 25mm, and the thicknesses of the first steel pipe, the second steel pipe and the third steel pipe are all 2 mm.
6. The tool for preventing unexpected shutdown in nuclear power plant turbine generator testing according to claim 4,
the vertical steel pipe is located 50mm of the first steel pipe, and the height of the vertical steel pipe is 70 mm.
7. The tool for preventing unintended shutdown in nuclear power plant steam turbine generator testing of claim 4,
the fixed channel steel is 1mm in thickness, 35mm in height, 90mm in length and 12mm in width.
8. The tool for preventing unintended shutdown in nuclear power plant steam turbine generator testing as recited in claim 1, wherein said fastening assembly comprises: a rubber base, a nut and a screw;
the two ends of the main steel pipe and the inner part of the other end of the vertical steel pipe are provided with pipe-in nuts matched with the screws;
the screw is screwed into the nut in the pipe;
the rubber base is fixed on the head of the screw through the nut.
9. The tool for preventing unintended shutdown in nuclear power plant steam turbine generator testing as claimed in claim 8,
the diameter of the screw is 12mm, and the height of the screw is 70 mm;
the rubber base is 50mm in diameter and 25mm in height, and the surface adjacent to the nut is chamfered;
the height of the nut is 10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123134776.7U CN216811797U (en) | 2021-12-14 | 2021-12-14 | Tool for preventing unexpected shutdown in nuclear power station steam turbine generator test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123134776.7U CN216811797U (en) | 2021-12-14 | 2021-12-14 | Tool for preventing unexpected shutdown in nuclear power station steam turbine generator test |
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| Publication Number | Publication Date |
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| CN216811797U true CN216811797U (en) | 2022-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123134776.7U Active CN216811797U (en) | 2021-12-14 | 2021-12-14 | Tool for preventing unexpected shutdown in nuclear power station steam turbine generator test |
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