CN210222167U - Nuclear power station emergency diesel engine electronic speed regulator maintenance platform - Google Patents
Nuclear power station emergency diesel engine electronic speed regulator maintenance platform Download PDFInfo
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- CN210222167U CN210222167U CN201921090014.1U CN201921090014U CN210222167U CN 210222167 U CN210222167 U CN 210222167U CN 201921090014 U CN201921090014 U CN 201921090014U CN 210222167 U CN210222167 U CN 210222167U
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Abstract
The utility model discloses an emergent diesel engine electronic governor of nuclear power station overhauls platform, include: the power module is a 220VAC to 24VDC power supply; the output ends of the first power supply interface and the second power supply interface are respectively connected with corresponding ports of the electronic speed regulator; the execution mechanism adopts an analog load and is connected with the second power supply interface; the output loop monitoring unit is used for monitoring the output current of the electronic speed regulator, is connected with the actuating mechanism, and is provided with a digital display voltmeter at two ends of the analog load; the switching value input contact is used for simulating different operation conditions of the electronic speed regulator; an analog input contact including a built-in frequency signal generator for simulating a rotational speed signal of the electronic governor to be input to the electronic governor; and an external interface. The utility model discloses can verify electronic governor's static operation, can verify electronic governor's dynamic function again.
Description
Technical Field
The utility model relates to a technical field that the nuclear power station instrument was maintained especially is about an emergent diesel engine electronic governor of nuclear power station overhauls platform.
Background
The engine controller is the core equipment of the diesel engine speed regulating system, and forms a closed-loop control system by taking the engine controller as the core. The device is a key device for ensuring the stable operation and the timely response of the whole diesel engine system. During the start-up phase of a diesel engine, the engine controller limits the maximum amount of fuel injected into the combustion chamber of the diesel engine to prevent the diesel engine from overspeeding and losing control. After the diesel engine is started, the speed regulating system provides a proper current signal to the speed regulating actuator through PID (proportion integration differentiation) operation of the speed regulator, so that a diesel engine generator set can realize certain load output at a given rotating speed. The engine controller is of the "Reverse-acting" type, the output control current being inversely proportional to the load, i.e. the control current decreases when the output power increases.
Because the current emergency diesel engine electronic speed regulator fault rate is higher, the replaced electronic speed regulator needs to be copied and verified after the electronic speed regulator fails, the fault phenomenon is reproduced, and the fault reason is analyzed. However, due to the complexity of the electronic speed governor, the current offline testing mode for the electronic speed governor is single, and only by simply powering on the electronic speed governor with an external power supply, and then measuring and checking the state of the electronic speed governor, because the switching value signal and the frequency signal cannot be simulated, the current offline testing mode can only verify the static operating mode of the electronic speed governor, but cannot verify whether the electronic speed governor operates normally when the diesel engine operates.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an emergent diesel engine electronic governor of nuclear power station overhauls platform, its static state operation that can verify electronic governor, the dynamic function that can verify electronic governor again.
In order to achieve the above object, the utility model provides an emergent diesel engine electronic governor of nuclear power station overhauls platform, include: the power module is a 220VAC to 24VDC power supply; the output ends of the first power supply interface and the second power supply interface are respectively connected with corresponding ports of the electronic speed regulator; the execution mechanism adopts an analog load and is connected with the second power supply interface; the output loop monitoring unit is used for monitoring the output current of the electronic speed regulator, the output loop monitoring unit is connected with the actuating mechanism, and the two ends of the analog load are provided with digital display voltmeters so as to monitor the running condition of the analog load; the switching value input contact is used for simulating different operation conditions of the electronic speed regulator; the analog quantity input contact comprises a built-in frequency signal generator which is used for simulating a rotating speed signal of the electronic speed regulator so as to input the rotating speed signal into the electronic speed regulator, so that different rotating speed signals are generated by the frequency signal generator when the electronic speed regulator runs so as to verify the speed regulation function of the electronic speed regulator; and an external interface.
In a preferred embodiment, the emergency diesel engine electronic governor overhaul platform of the nuclear power station is further provided with an external direct current power supply port to detect the operation condition of converting 220VAC to 24 VDC.
In a preferred embodiment, the artificial load is a resistance of 13 Ω 60W.
In a preferred embodiment, the dummy load is provided with a radiator fan.
In a preferred embodiment, the output circuit monitoring unit includes a digital display ammeter, and the digital display ammeter is disposed between the analog load and the second power interface.
In a preferred embodiment, the external interface includes a recorder interface, a multimeter interface.
In a preferred embodiment, the switching value input contacts are a plurality of switching value input signal switches, and the plurality of switching value input signal switches are respectively used for simulating a starting signal, an idle speed/rated speed signal and a rotating speed increasing/decreasing signal for the electronic speed regulator.
In a preferred embodiment, the maintenance platform for the electronic speed regulator of the emergency diesel engine in the nuclear power plant further comprises reserved contacts, wherein the reserved contacts are 5 groups of 24V + switching value signal switches and 5 groups of 24V-switching value signal switches.
In a preferred embodiment, the analog input contact further comprises an external signal generator interface, and the external signal generator interface can monitor the working state of the frequency signal generator and can use an external signal to simulate a rotating speed signal.
Compared with the prior art, according to the utility model discloses an emergent diesel engine electronic governor of nuclear power station overhauls platform has following advantage: by designing an integrated circuit, signals required by the simulation operation of the electronic speed regulator are integrated, so that more working conditions of the operation of the electronic speed regulator can be simulated, off-line simulation operation verification can be performed on the electronic speed regulator with faults, and the electronic speed regulator with faults can be positioned. And the electronic speed regulator spare parts purchased can be copied and verified to ensure that the electronic speed regulator installed on the site has normal functions. Will the utility model discloses an after electronic governor is connected to the maintenance platform, relevant operation all can be operated on the maintenance platform, avoids causing electronic governor's damage because of misoperation.
Drawings
Fig. 1 is a block diagram of a nuclear power station emergency diesel engine electronic governor maintenance platform according to an embodiment of the present invention.
Fig. 2 is a schematic view of a connection of an inspection platform according to an embodiment of the present invention.
Fig. 3 is a schematic view of a panel of an inspection platform according to an embodiment of the present invention.
Fig. 4 is a schematic circuit diagram of an inspection platform according to an embodiment of the present invention.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1 to 3, the maintenance platform 100 for the electronic governor of the emergency diesel engine of the nuclear power plant according to the preferred embodiment of the present invention includes: the circuit comprises a power module 101, an actuator 102, an output loop monitoring unit 103, a switching value input contact 104, an analog value input contact 105, a first power interface CA2, a second power interface CA3, a signal interface CES1 and an external interface 106. The power module 101 is a 220 VAC-to-24 VDC power supply, and a panel of the maintenance platform is provided with a 220VAC power switch, a 24VDC port and a power indicator lamp, so that an external direct-current stabilized power supply is not required to be connected when an electronic governor simulation operation test is carried out, and 220VAC alternating-current operation can be directly used. The output ends of the first power interface CA2 and the second power interface CA3 are respectively connected with corresponding power interfaces (such as interfaces CA4 and CA5 shown in fig. 2) of the electronic speed regulator 200, and the first power interface CA2 is used for supplying power to the electronic speed regulator 200. The actuator 102 adopts an analog load, and the actuator 104 is connected with the second power interface CA 3; the output loop monitoring unit 103 is used for monitoring the output current of the electronic speed regulator, the output loop monitoring unit is connected with the actuating mechanism 102, and the two ends of the analog load are provided with a digital display voltmeter 103 so as to monitor the running condition of the analog load; the switching value input contact 104 is used for simulating different operation conditions of the electronic speed regulator; the analog input terminal 105 includes a built-in frequency signal generator 107 for simulating a rotation speed signal of the electronic governor to be input to the electronic governor, so that different rotation speed signals are generated by the frequency signal generator 107 when the electronic governor is operated to verify a speed regulation function of the electronic governor.
In a preferred embodiment, the electronic speed regulator maintenance platform of the emergency diesel engine of the nuclear power station is further provided with an external direct current power supply port 108 to detect the operation condition of converting 220VAC to 24VDC, and an external direct current stabilized power supply can be used if necessary.
In a preferred embodiment, the dummy load is a resistor R of 13 Ω 60W, and the dummy load is preferably provided with a heat dissipation fan 120 to enhance the heat dissipation performance of the dummy load.
In a preferred embodiment, the output circuit monitoring unit includes a digital display ammeter 110, and the digital display ammeter 110 is disposed between the analog load and the second power interface CA 3.
In a preferred embodiment, the external interface 106 includes a recorder interface 111, a multimeter interface. In order to facilitate the analysis of the output of the electronic speed regulator, an interface of an external high-speed recorder is arranged at the output of the electronic speed regulator.
In a preferred embodiment, the switching value input contacts are a plurality of switching value input signal switches, and the plurality of switching value input signal switches (such as a start switch 113, an idle/rated speed switch 114, and an up/down speed knob 115 shown in fig. 4) are used for simulating a start signal, an idle/rated speed signal, and a speed up/down signal for the electronic governor, respectively.
In a preferred embodiment, the electronic governor overhaul platform for the emergency diesel engine of the nuclear power plant further includes reserved contacts, as shown in fig. 4, the reserved contacts are 5 groups of 24V + switching value signal switches 117 and 5 groups of 24V-switching value signal switches 118, so as to simulate more electronic governor operating state signals and monitor the state of the watchdog of the electronic governor.
In a preferred embodiment, the analog input terminal further includes an external signal generator interface 119, and the external signal generator interface 119 is capable of monitoring the operating state of the frequency signal generator 107 and, if necessary, simulating the rotation speed signal using an external signal.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (9)
1. The utility model provides an emergent diesel engine electronic governor of nuclear power station overhauls platform which characterized in that, emergent diesel engine electronic governor of nuclear power station overhauls the platform and includes:
the power supply module is a 220VAC to 24VDC power supply;
the output ends of the first power supply interface and the second power supply interface are respectively connected with corresponding ports of the electronic speed regulator;
the execution mechanism adopts an analog load and is connected with the second power supply interface;
the output loop monitoring unit is used for monitoring the output current of the electronic speed regulator, the output loop monitoring unit is connected with the actuating mechanism, and the two ends of the analog load are provided with digital display voltmeters so as to monitor the running condition of the analog load;
the switching value input contact is used for simulating different operation conditions of the electronic speed regulator;
the analog quantity input contact comprises a built-in frequency signal generator which is used for simulating a rotating speed signal of the electronic speed regulator so as to input the rotating speed signal into the electronic speed regulator, so that different rotating speed signals are generated by the frequency signal generator when the electronic speed regulator runs so as to verify the speed regulation function of the electronic speed regulator; and
an external interface.
2. The nuclear power plant emergency diesel engine electronic governor overhaul platform of claim 1 further comprising an external dc power port to detect 220VAC to 24VDC operation.
3. The nuclear power plant emergency diesel engine electronic governor overhaul platform of claim 1 wherein the dummy load is a resistance of 13 Ω 60W.
4. The nuclear power plant emergency diesel engine electronic governor overhaul platform of claim 3 wherein the dummy load is fitted with a radiator fan.
5. The overhaul platform for the electronic speed regulator of the emergency diesel engine of the nuclear power station as claimed in claim 3, wherein the output loop monitoring unit comprises a digital display ammeter, and the digital display ammeter is arranged between the analog load and the second power interface.
6. The nuclear power plant emergency diesel engine electronic governor overhaul platform of claim 5 wherein the external interface comprises a recorder interface, a multimeter interface.
7. The nuclear power plant emergency diesel engine electronic governor overhaul platform of claim 6, wherein the switching value input contacts are a plurality of switching value input signal switches, and the plurality of switching value input signal switches are respectively used for simulating a start signal, an idle/frontal speed signal, and a rotation speed increase/decrease signal for the electronic governor.
8. The nuclear power plant emergency diesel engine electronic governor overhaul platform of claim 7 further comprising reserved contacts that are 5 sets of 24V + switching value signal switches and 5 sets of 24V-switching value signal switches.
9. The nuclear power plant emergency diesel engine electronic governor overhaul platform of claim 8 wherein the analog input contacts further comprise an externally connected signal generator interface capable of monitoring the operating state of the frequency signal generator and capable of simulating a rotational speed signal using an external signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921090014.1U CN210222167U (en) | 2019-07-12 | 2019-07-12 | Nuclear power station emergency diesel engine electronic speed regulator maintenance platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921090014.1U CN210222167U (en) | 2019-07-12 | 2019-07-12 | Nuclear power station emergency diesel engine electronic speed regulator maintenance platform |
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| CN210222167U true CN210222167U (en) | 2020-03-31 |
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| CN201921090014.1U Active CN210222167U (en) | 2019-07-12 | 2019-07-12 | Nuclear power station emergency diesel engine electronic speed regulator maintenance platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112596551A (en) * | 2020-11-26 | 2021-04-02 | 中广核核电运营有限公司 | Function verification method and system of electronic speed regulator |
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2019
- 2019-07-12 CN CN201921090014.1U patent/CN210222167U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112596551A (en) * | 2020-11-26 | 2021-04-02 | 中广核核电运营有限公司 | Function verification method and system of electronic speed regulator |
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