CN220207804U - Low oil pressure tester for speed regulating system of hydroelectric generating set - Google Patents
Low oil pressure tester for speed regulating system of hydroelectric generating set Download PDFInfo
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- CN220207804U CN220207804U CN202320259033.2U CN202320259033U CN220207804U CN 220207804 U CN220207804 U CN 220207804U CN 202320259033 U CN202320259033 U CN 202320259033U CN 220207804 U CN220207804 U CN 220207804U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The utility model provides a low oil pressure test appearance of hydroelectric generating set speed governing system, includes organic cabinet body and operation screen, and the front of cabinet body is equipped with the cabinet door, the cabinet door passes through the hinge and articulates with cabinet body, and universal wheel has been installed to the four corners department of cabinet body bottom face, and handle groove has been seted up to the both sides of cabinet body, be equipped with rotatory handle in the handle groove, the top of cabinet body is equipped with the operation screen, the operation screen is with the top face sliding connection of cabinet body, the inside control system and the power that are equipped with of cabinet body; according to the utility model, under the conditions that the connection of each pressure switch to the LCU of the monitoring system is not dismantled and the feedback of the breaking state of each pressure switch signal is not interfered, the action resetting condition of each pressure switch is monitored in parallel, and the action value and resetting value of each pressure switch are recorded automatically, so that the test efficiency and the accuracy are improved effectively.
Description
Technical Field
The utility model belongs to the technical field of water turbine test equipment, and particularly relates to a low oil pressure tester for a speed regulation system of a hydroelectric generating set.
Background
According to the relevant regulations of GB/T9652.1-2019 technical Condition of a Water turbine control System, a low oil pressure flow test for simulating accidents of a hydraulic device of a speed regulating system is needed after the maintenance of a hydroelectric generating set. The conventional method is to gradually reduce the pressure of a hydraulic device of a speed regulating system to below 5.2MPa of an accident low oil pressure setting value, and record the action pressure values of a pressure oil tank, a system pipeline pressure low alarm and a pressure low stop pressure switch; and then gradually increasing the pressure of the hydraulic device, recording the reset pressure value of each pressure switch, calculating the return difference, and judging whether the test result is qualified according to the technical standard.
When a low oil pressure test of a speed regulation system is carried out by the traditional method, testers need to be distributed at the installation positions of an LCU operator station, a speed regulator hydraulic system control cabinet and each pressure switch, and more communication and coordination work needs to be carried out during the test; the test result is also completely recorded manually by a tester, so that a certain delay error exists; in addition, after test data are recorded, related technical standards are manually consulted, whether the test result is qualified or not is judged, and finally, the test time is long and the test efficiency is seriously affected.
Disclosure of Invention
In view of the technical problems existing in the background technology, the low oil pressure tester for the speed regulating system of the hydroelectric generating set provided by the utility model can monitor the action resetting condition of each pressure switch in parallel without dismantling the connection from each pressure switch to the LCU of the monitoring system and without interfering the feedback of the breaking state of each pressure switch signal, automatically record the action value and resetting value of each pressure switch, and further effectively improve the test efficiency and accuracy.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a low oil pressure test appearance of hydroelectric generating set speed governing system, includes organic box and operation screen, and the front of box is equipped with the cabinet door, the cabinet door passes through the hinge and articulates with the box, and the universal wheel has been installed to the four corners department of box bottom surface, and the handle groove has been seted up to the both sides of box, be equipped with rotatory handle in the handle groove, the top of box is equipped with the operation screen, the top face sliding connection of operation screen and box, the inside control system and the power of being equipped with of box.
In the preferred scheme, the operation screen includes the touch screen, and the overhead gage is installed to one side of touch screen, and the lower baffle is installed to the opposite side of touch screen, and the lower terminal surface parallel arrangement of touch screen has the slide rail, and the up end department of quick-witted case cabinet body corresponds and is provided with the spout, slide rail joint is in the spout and makes the touch screen spacing slip along the spout.
In the preferred scheme, control system includes analog transmitter and PLC controller, and the inside of quick-witted case cabinet body is equipped with the baffle, analog transmitter and PLC controller have been installed to the up end of baffle, are connected through the data line between analog transmitter, PLC controller and the operation screen, and the below of baffle is equipped with the power.
In the preferred scheme, the power includes battery and power source, the battery is placed in the inside and baffle below of quick-witted case cabinet body, and the lateral surface of machine case cabinet body is equipped with power source, power source passes through power cord and battery, analog quantity changer, PLC controller and operation screen electric connection.
In the preferred scheme, standing grooves are symmetrically formed in the upper end face of the cabinet body of the case, the standing grooves are formed in the edge of the upper side of the end face and below the operation screen, positive electrode binding posts and negative electrode binding posts are arranged in the standing grooves, and the positive electrode binding posts and the negative electrode binding posts are connected with binding clips through spiral cables, and are electrically connected with an analog transducer.
The following beneficial effects can be achieved in this patent:
1. all components of a low oil pressure test recorder of a speed regulation system of the hydroelectric generating set are arranged on an inclined plane operation box, and a man-machine interaction device is arranged on an inclined plane convenient for personnel to operate, so that the operation of the personnel is convenient, and the personnel required by the test are reduced;
2. the device can be conveniently pushed to any working place through the universal wheels at the bottom, so that the applicability of the device is improved;
3. the device is provided with two power supply modes of battery power supply and AC220V external power supply, so that the application range of the device is improved;
4. compared with a manual recording mode, the device can automatically record test data and timely find abnormal test data, and the working efficiency and accuracy of a low oil pressure test of the hydroelectric generating set are improved.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic diagram of the internal structure of the present utility model;
FIG. 3 is a top view of the overall structure of the present utility model;
FIG. 4 is a schematic view of the structure of the control panel (disassembled state);
FIG. 5 is a schematic view of the operation panel structure (installed state) of the present utility model;
FIG. 6 is a schematic diagram of the low oil pressure test apparatus of the hydro-power generation unit speed regulation system of the present utility model.
In the figure: the cabinet comprises a cabinet body 1, a cabinet door 2, a hinge 3, an operation screen 4, a touch screen 401, an upper baffle 402, a lower baffle 403, a sliding rail 404, a sliding chute 405, a universal wheel 5, a baffle 6, an analog quantity transmitter 7, a PLC controller 8, a handle groove 9, a rotary handle 10, a storage battery 11, a power interface 12, a placing groove 13, a pressure switch 14, a positive terminal 15, a negative terminal 16, a binding clip 17 and a spiral cable 18.
Detailed Description
As shown in fig. 1 and 2, the low oil pressure tester of the speed regulation system of the hydroelectric generating set comprises an organic cabinet body 1 and an operation screen 4, wherein a cabinet door 2 is arranged on the front surface of the organic cabinet body 1, the cabinet door 2 is hinged with the organic cabinet body 1 through a hinge 3, and universal wheels 5 are arranged at four corners of the bottom surface of the organic cabinet body 1, so that the device can be conveniently pushed to any working place;
the two sides of the cabinet body 1 of the case are provided with the handle grooves 9, the handle grooves 9 are internally provided with the rotary handles 10, workers can conveniently push the case by turning over the rotary handles 10, and after the device is in place, the rotary handles 10 can be automatically turned over into the handle grooves 9, so that the occupation of space is reduced; the top of the case cabinet 1 is provided with an operation screen 4, the operation screen 4 is in sliding connection with the top surface of the case cabinet 1, and a control system and a power supply are arranged in the case cabinet 1.
As shown in fig. 4 and 5, the operation panel 4 includes a touch panel 401, an upper baffle 402 is installed on one side of the touch panel 401, a lower baffle 403 is installed on the other side of the touch panel 401, sliding rails 404 are parallel to the lower end surface of the touch panel 401, sliding grooves 405 are correspondingly arranged on the upper end surface of the cabinet body 1, and the sliding rails 404 are clamped in the sliding grooves 405 and enable the touch panel 401 to slide along the sliding grooves 405 in a limited manner;
when the device works, the touch screen 401 can slide downwards along the sliding groove 405 and the placing groove 13 at the upper edge of the cabinet body 1 is exposed, and the upper baffle 402 can limit the touch screen 401 and effectively prevent the touch screen 401 from sliding out from the lower part of the sliding groove 405; after the device works, the touch screen 401 is pushed and slides reversely until the touch screen 401 completely covers the placing groove 13, the lower baffle 403 can limit the touch screen 401 and effectively prevent the touch screen 401 from sliding out from the upper side of the sliding groove 405, and a damping mechanism is arranged between the sliding groove 405 and the sliding rail 404 and can keep the position of the touch screen 401 on the sliding groove 405 fixed.
The preferable scheme is as shown in fig. 2 and 6, the control system comprises an analog quantity transmitter 7 and a PLC controller 8, a partition board 6 is arranged in the cabinet body 1, the analog quantity transmitter 7 and the PLC controller 8 are arranged on the upper end surface of the partition board 6, the analog quantity transmitter 7, the PLC controller 8 and the operation screen 4 are connected through data lines, and a power supply is arranged below the partition board 6;
when the device works, the binding clip 17 is connected with the pressure switch 14 and collects pressure analog signals, the binding clip 17 transmits the analog signals to the analog transmitter 7, the analog signals are transmitted to the PLC 8 after being isolated and converted, and the PLC 8 transmits information to the operation screen 4 for display and corresponding operation.
The preferable scheme is as shown in fig. 2, the power supply comprises a storage battery 11 and a power interface 12, the storage battery 11 is placed in the cabinet body 1 of the machine box and below the partition board 6, the power interface 12 is arranged on the side surface of the cabinet body 1 of the machine box, and the power interface 12 is electrically connected with the storage battery 11, the analog quantity transmitter 7, the PLC controller 8 and the operation screen 4 through power lines; when the device works, the power can be supplied through an AC220V external power supply, and when the working environment cannot be connected with an external power supply, the power can also be directly supplied through the storage battery 11, and the power interface 12 is connected with the external power supply to directly charge the storage battery 11.
As shown in fig. 3, the top end face of the cabinet body 1 of the case is symmetrically provided with a placement groove 13, the placement groove 13 is arranged at the edge above the end face and below the operation screen 4, a positive terminal 15 and a negative terminal 16 are arranged in the placement groove 13, the positive terminal 15 and the negative terminal 16 are connected with a binding clip 17 through a spiral cable 18, and the positive terminal 15 and the negative terminal 16 are electrically connected with the analog transducer 7;
when the device works, the touch screen 401 is slid downwards to expose the placing groove 13, and then the binding clip 17 is taken out and connected with the pressure switch 14 to perform corresponding detection work; after the device works, the jointing clamp 17 can be put back into the placing groove 13, and the placing groove 13 can be completely hidden by sliding the touch screen 401 upwards, so that the loss of parts can be avoided, and the overall attractiveness of the device is greatly improved.
The device uses the principle as follows:
1. connecting a binding clip 17 with a pressure switch 14 and collecting pressure analog signals, transmitting the electric signals to an analog transmitter 7 by the binding clip 17, isolating and converting the signals, and then transmitting the signals to a PLC (programmable logic controller) 8;
2. the PLC 8 judges the on-off condition of the pressure switch through a voltage value, when the voltage is larger than a set value A (generally 16V), the pressure switch is judged to be in a reset state (namely an off state), and when the voltage is smaller than a set value B (generally 8V), the pressure switch is judged to be in an action state (namely an on state);
3. the PLC controller 8 uses the pressure analog value at the time of the falling edge of the measured pressure switch voltage curve as the operation value C of the pressure switch, and the PLC uses the pressure analog value at the time of the rising edge of the measured pressure switch voltage curve as the operation reset value D of the pressure switch, and subtracts the operation value C from the operation reset value D of the pressure switch as the reset difference E of the pressure switch (D-c=e);
4. the PLC 8 displays the analog quantity value, the test data record and the test judgment result on the touch screen 401 through a data line;
5. on the touch panel 401, an operation value qualification standard range, an operation return value qualification standard range, and a return difference value qualification standard range of each pressure switch are set according to a low oil pressure test standard. When each measured value is within the qualification standard range, the touch screen displays that all test data of the test are qualified, otherwise, the touch screen displays that the test data are qualified, and the touch screen displays that the test data are qualified! Abnormal data exists in the test.
The above embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the scope of the present utility model should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.
Claims (5)
1. The utility model provides a low oil pressure test appearance of hydroelectric generating set speed governing system, includes organic cabinet body (1) and operation screen (4), its characterized in that: the front of machine case cabinet body (1) is equipped with cabinet door (2), cabinet door (2) are articulated with machine case cabinet body (1) through hinge (3), and universal wheel (5) are installed in the four corners department of machine case cabinet body (1) bottom face, and handle groove (9) have been seted up to the both sides of machine case cabinet body (1), be equipped with rotatory handle (10) in handle groove (9), the top of machine case cabinet body (1) is equipped with operation screen (4), the top face sliding connection of operation screen (4) and machine case cabinet body (1), the inside control system and the power of being equipped with of machine case cabinet body (1).
2. The hydro-power generating unit speed regulation system low oil pressure test instrument according to claim 1, wherein: the operation screen (4) comprises a touch screen (401), an upper baffle (402) is arranged on one side of the touch screen (401), a lower baffle (403) is arranged on the other side of the touch screen (401), sliding rails (404) are arranged on the lower end faces of the touch screen (401) in parallel, sliding grooves (405) are correspondingly formed in the upper end faces of the cabinet body (1), and the sliding rails (404) are clamped in the sliding grooves (405) and enable the touch screen (401) to slide along the sliding grooves (405) in a limiting mode.
3. The hydro-power generating unit speed regulation system low oil pressure test instrument according to claim 1, wherein: the control system comprises an analog quantity transmitter (7) and a PLC (programmable logic controller) controller (8), a partition plate (6) is arranged in the cabinet body (1), the analog quantity transmitter (7) and the PLC (8) are arranged on the upper end face of the partition plate (6), the analog quantity transmitter (7), the PLC (8) and the operation screen (4) are connected through data lines, and a power supply is arranged below the partition plate (6).
4. The hydro-power generation unit speed regulation system low oil pressure test instrument according to claim 3, wherein: the power supply comprises a storage battery (11) and a power interface (12), wherein the storage battery (11) is placed inside the cabinet body (1) and below the partition board (6), the power interface (12) is arranged on the side surface of the cabinet body (1), and the power interface (12) is electrically connected with the storage battery (11), the analog quantity transmitter (7), the PLC (8) and the operation screen (4) through power lines.
5. The hydro-power generating unit speed regulation system low oil pressure test instrument according to claim 1, wherein: the utility model provides a standing groove (13) has been seted up to up end department symmetry of quick-witted case cabinet body (1), standing groove (13) are seted up in terminal surface top limit department and the below of operation screen (4), have installed positive terminal (15) and negative terminal (16) in standing groove (13), positive terminal (15) and negative terminal (16) pass through helical cable (18) and connect binding clip (17), positive terminal (15) and negative terminal (16) and analog transmitter (7) electric connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320259033.2U CN220207804U (en) | 2023-02-20 | 2023-02-20 | Low oil pressure tester for speed regulating system of hydroelectric generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320259033.2U CN220207804U (en) | 2023-02-20 | 2023-02-20 | Low oil pressure tester for speed regulating system of hydroelectric generating set |
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| Publication Number | Publication Date |
|---|---|
| CN220207804U true CN220207804U (en) | 2023-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320259033.2U Active CN220207804U (en) | 2023-02-20 | 2023-02-20 | Low oil pressure tester for speed regulating system of hydroelectric generating set |
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| Country | Link |
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| CN (1) | CN220207804U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118050173A (en) * | 2024-04-16 | 2024-05-17 | 三峡金沙江川云水电开发有限公司 | A method and system for testing low oil pressure of a speed regulating system of a hydropower unit |
-
2023
- 2023-02-20 CN CN202320259033.2U patent/CN220207804U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118050173A (en) * | 2024-04-16 | 2024-05-17 | 三峡金沙江川云水电开发有限公司 | A method and system for testing low oil pressure of a speed regulating system of a hydropower unit |
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