CN212675112U - Moving die experiment system - Google Patents
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- CN212675112U CN212675112U CN202020644947.7U CN202020644947U CN212675112U CN 212675112 U CN212675112 U CN 212675112U CN 202020644947 U CN202020644947 U CN 202020644947U CN 212675112 U CN212675112 U CN 212675112U
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Abstract
The utility model discloses a movable mould experimental system, it includes power supply system, two at least mechanisms that await measuring, original driving mechanism, to dragging switch module and variable current control subassembly. The driving mechanism is connected between any two mechanisms to be tested and has a counter-dragging state which is coaxially connected with the mechanisms to be tested and drags the mechanisms to be tested to the same rotating speed; the opposite-dragging switch assembly is arranged between the driving mechanism and the mechanism to be tested so as to control the connection between the driving mechanism and the mechanism to be tested; the variable-current control assembly is connected with the mechanism to be tested and controls the actual power of the mechanism to be tested to reach the preset power in a dragging state; and/or the actual rotating speed of the mechanism to be detected reaches the preset rotating speed. Therefore, the dragging experiments of the prime mechanism and the mechanism to be tested are respectively and one by one realized, and the electrical performance and the mechanical performance of the mechanisms to be tested are respectively evaluated, so that the verification efficiency of the test evaluation system is greatly improved. And the large pumped storage power station is simulated, so that the experimental simulation accuracy is improved.
Description
Technical Field
The utility model relates to a movable mould experiment technical field, concretely relates to movable mould experimental system.
Background
The pumped storage power station has the functions of peak regulation, valley filling, frequency modulation and accident standby, and is the most mature main mode for storing high-capacity electric energy. At present, all the pumped storage units are constant-speed constant-frequency units, and the power cannot be quickly and smoothly adjusted when the water pump operates under the working condition.
The variable-speed pumped storage unit can be independently adjusted in power and rotating speed, the performance of the variable-speed pumped storage unit is superior to that of a traditional constant-speed pumped storage unit, at present, the double-fed variable-speed pumped storage unit is rapidly developed and applied in a large scale in Japan and Europe, the frequency control of a power grid is realized by using a variable-speed pumped storage technology in Japan, and the variable-speed pumped storage is introduced into Europe to carry out power balance control of the power grid. With the large-scale access of new energy and the rapid development of an alternating current-direct current power grid, the demand of the power grid on a variable-speed pumped storage unit is strong day by day, and in the prior art, a dynamic model experiment system has a single function and needs a plurality of groups of experimental equipment to respectively verify different experimental motors, so that the experimental verification efficiency is low.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model discloses the technical problem that will solve because the movable mould experimental system function singleness among the prior art needs multiunit experimental facilities to verify different experimental motors respectively, therefore leads to the experiment to verify efficiency lower.
Therefore, the utility model provides a movable mould experimental system, include
A power supply system; and electrically connected to the power supply system:
at least two mechanisms to be tested;
the driving mechanism is connected between any two mechanisms to be tested and has a counter-dragging state which is coaxially connected with the mechanisms to be tested and drags the mechanisms to be tested to the same rotating speed;
the device comprises a driving mechanism, a mechanism to be tested and at least one group of oppositely-dragging switch assemblies, wherein any one group of oppositely-dragging switch assemblies is arranged between the driving mechanism and the mechanism to be tested so as to control the communication between the driving mechanism and the mechanism to be tested;
the variable flow control assembly is connected with the mechanism to be tested and controls the actual power of the mechanism to be tested to reach the preset power in the opposite dragging state; and/or the actual rotating speed of the mechanism to be tested reaches the preset rotating speed.
Optionally, in the above moving mold experimental system, any of the variable flow control assemblies includes:
the converter comprises a converter and an external control system, wherein the external control system is connected with a control chip of the converter; controlling the actual power of the mechanism to be tested to reach the preset power; and/or the actual rotating speed of the mechanism to be tested reaches the preset rotating speed.
Optionally, the dynamic simulation experiment system further includes a torque detection mechanism, including a torque meter, where the torque meter is connected between any mechanism to be detected and the driving mechanism, and is used to detect the torque of the driving mechanism in the opposite dragging state.
Optionally, in the above moving mold experimental system, the mechanism to be tested is a generator, and the counter-traction motor is a dc generator; or
The mechanism to be tested is an electric motor, and the counter-dragging motor is a direct current motor.
Optionally, in the moving mold experimental system, the two mechanisms to be tested are a synchronous motor and a doubly-fed motor respectively;
the prime mechanism is a direct current motor;
the direct current motor is connected between the synchronous motor and the double-fed motor;
the variable current control assembly is connected between the synchronous motor and the doubly-fed motor and is communicated with the direct current motor in parallel.
Optionally, in the above moving mold experimental system, the converter includes a motor converter unit and a grid converter unit;
one end of the motor current transformation unit is connected with the stator of the synchronous motor; the other end of the double-fed motor is connected with a rotor of the double-fed motor;
one end of the power grid current transformation unit is connected with the power supply system, and the other end of the power grid current transformation unit is connected with the stator of the double-fed motor and the power supply system.
Optionally, the moving die experiment system further includes a grid switch assembly,
one end of the first power grid switch is connected with the double-fed motor and the converter, and the other end of the first power grid switch is connected with the power supply system; the first power grid switch is switched on and off to control the double-fed motor and the converter to be respectively communicated with the power supply system for electrification;
one end of the second power grid switch is connected with the synchronous motor and the converter, and the other end of the second power grid switch is connected with the power supply system; and the second power grid switch is switched on and off to control the synchronous motor and the converter to be communicated and electrified with the power supply system respectively.
Optionally, in the above moving die experimental system, the drag switch assembly comprises
A first motor switch and a second motor switch;
one end of the first motor switch is connected with the double-fed motor, the other end of the first motor switch is connected with the direct current motor, and the double-fed motor and the direct current motor are controlled to be switched on and off by opening and closing the first motor switch;
and one end of the second motor switch is connected with the synchronous motor, the other end of the second motor switch is connected with the direct current motor, and the second motor switch is opened and closed to control the on-off of the synchronous motor and the direct current motor.
Optionally, in the moving mold experiment system, the power supply system provides a dc power supply for the dc motor;
and the power supply system provides an alternating current power supply for the converter, the double-fed motor and the synchronous motor.
The technical scheme provided by the utility model, following advantage has:
1. the utility model provides a movable mould experimental system, which comprises a power supply system; and electrically connected to the power supply system: the device comprises at least two mechanisms to be tested, a driving mechanism, a drag switch assembly and a variable flow control assembly. The driving mechanism is connected between any two mechanisms to be tested and has a counter-dragging state which is coaxially connected with the mechanisms to be tested and drags the mechanisms to be tested to the same rotating speed; any group of the counter-dragging switch assemblies is arranged between the driving mechanism and the mechanism to be tested so as to control the communication between the driving mechanism and the mechanism to be tested; the variable flow control assembly is connected with the mechanism to be tested and controls the actual power of the mechanism to be tested to reach the preset power in the opposite dragging state; and/or the actual rotating speed of the mechanism to be tested reaches the preset rotating speed.
The movable mould experiment system with the structure regulates the power or the rotating speed of the mechanism to be tested through the variable-current control assembly by controlling the on-off of the dragging switch assembly through the same experiment system, so that the dragging experiments of the prime mechanism and the mechanism to be tested are respectively realized one by one; therefore, the drag test of the mechanisms to be tested is realized, the electrical performance and the mechanical performance of the mechanisms to be tested are respectively evaluated, and the verification efficiency of the test evaluation system is greatly improved.
Furthermore, it is possible to simultaneously pass through modes of the mechanism under test, such as: the generator or the motor rotates forwards or backwards to simulate the working condition of pumped storage power generation or pumped water. And then simulate large-scale pumped storage power station, guarantee the simulation accuracy of movable mould experiment.
2. The utility model provides a movable mould experimental system, arbitrary current transformation control assembly includes: the converter comprises a converter and an external control system, wherein the external control system is connected with a control chip of the converter; controlling the actual power of the mechanism to be tested to reach the preset power; and/or the actual rotating speed of the mechanism to be tested reaches the preset rotating speed.
The dynamic simulation experiment system with the structure controls the external control system to drive one side of the converter to control the actual rotating speed of the mechanism to be tested through the arrangement of the variable-current control assembly, and the actual rotating speed or the preset power of the mechanism to be tested is achieved, so that the follow-up motor dragging action is achieved.
3. The utility model provides a movable mould experimental system still includes moment of torsion detection mechanism, including the torquemeter, the torquemeter connect in arbitrary mechanism that awaits measuring with between the former driving mechanism, be used for to dragging the state and detecting down the moment of torsion of former driving mechanism. Through the arrangement of the torquemeter, the rotating speed of the bearing connected with the torquemeter is monitored, the rotating speed of the bearing connected with the mechanism to be tested and the original mechanism is further monitored, and the power operation and frequency response capability of the mechanism to be tested in a drag experiment are verified.
4. The utility model provides a movable mould experimental system, still include the electric wire netting switch module, the first electric wire netting switch, one end of said first electric wire netting switch connects said double-fed motor and said converter, another end connects said power supply system; the first grid switch is switched on and off to control the on-off of the doubly-fed motor and one side of the converter; one end of the second power grid switch is connected with the synchronous motor and the converter, and the other end of the second power grid switch is connected with the power supply system; and the second grid switch is switched on and off to control the synchronous motor to be switched on or off with one side of the converter.
According to the dynamic die experiment system with the structure, the power grid switch component realizes on-off of the mechanism to be tested and the converter of the power grid, so that the mechanism to be tested is subjected to dragging experiments, when concrete use is guaranteed, the power grid switch component is operated to cooperatively drag the switch component, the dragging experiments of any mechanism to be tested can be realized, and the safety of the power grid switch component in the detection process is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram showing the operation of a dynamic simulation experiment system provided in example 1;
description of reference numerals:
1-a power supply system;
2-a doubly-fed machine; 3-a direct current motor; 4-a synchronous machine;
51-a first motor switch; 52-a second motor switch;
61-a current transformer; 62-an external control system;
71-a first torque meter; 72-a second torque meter;
81-a first grid switch; 82-a second grid switch;
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
The present embodiment provides a dynamic simulation experiment system, as shown in fig. 1, including a power supply system 1; and electrically connected to the power supply system 1: two mechanisms to be tested, a direct current motor 3, a pair dragging switch assembly and a variable current control assembly. The direct current motor 3 is connected between any two mechanisms to be tested and has a counter-dragging state which is coaxially connected with the mechanisms to be tested and synchronously rotates with the mechanisms to be tested; any one group of the counter-dragging switch assemblies is arranged between the direct current motor 3 and the mechanism to be tested so as to control the communication between the direct current motor 3 and the mechanism to be tested; the variable flow control assembly is connected with the mechanism to be tested and used for controlling the power and the rotating speed of one side of the mechanism to be tested in a dragging state.
Specifically, the two mechanisms to be tested are a synchronous motor 4 and a double-fed motor 2 respectively; the direct current motor 3 is connected between the synchronous motor 4 and the double-fed motor 2; the variable current control assembly is connected between the synchronous motor 4 and the doubly-fed motor 2 and is communicated with the direct current motor 3 in parallel.
Specifically, in the moving mold experiment system, the power supply system 1 provides a direct current power supply for the direct current motor 3; the power supply system 1 provides ac power to the converter 61, the doubly fed machine 2 and the synchronous machine 4.
The dynamic simulation experiment system in this embodiment further includes a torque detection mechanism, which includes a torque meter, and the torque meter is connected between any mechanism to be detected and the dc motor 3, and is used for detecting the torque of the dc motor 3 in a dragging state. For example, the torque detection mechanism includes a first torque meter 71 disposed near the doubly-fed machine 2 side, and a second torque meter 72 disposed near the synchronous machine 4 side. Through the setting of the torquemeter, the rotating speed of the bearing connected with the torquemeter is monitored, the rotating speed of the bearing connected with the direct current motor 3 of the mechanism to be tested is further monitored, and the power operation and frequency response capability of the mechanism to be tested in a drag experiment are verified.
In the dynamic simulation experiment system in this embodiment, the variable flow control module includes: the converter 61 and the external control system 62, wherein the external control system 62 is connected with a control chip of the converter 61; in the above moving die experimental system, the converter 61 includes a motor converter unit and a grid converter unit; one end of the motor current transformation unit is connected with a stator of the synchronous motor 4; the other end is connected with a rotor of the double-fed motor 2; one end of the power grid current transformation unit is connected with the power supply system 1, and the other end of the power grid current transformation unit is connected with the stator of the double-fed motor 2 and the power supply system 1.
As shown in fig. 1, in the above-mentioned moving mold experiment system, in this embodiment, the pair drag switch assembly includes a first motor switch 51 and a second motor switch 52. One end of the first motor switch 51 is connected with the doubly-fed motor 2, the other end of the first motor switch 51 is connected with the direct-current motor 3, and the first motor switch 51 is switched on and off to control the on-off of the doubly-fed motor 2 and the direct-current motor 3; one end of the second motor switch 52 is connected to the synchronous motor 4, the other end is connected to the dc motor 3, and the second motor switch 52 is opened and closed to control the on and off of the synchronous motor 4 and the dc motor 3. Specifically, first motor switch and the my switch of second motor are mechanical switch, set up on the interconnect's of former driving mechanism and mechanism to be measured connecting axle.
As shown in fig. 1, the moving model experiment system further includes a grid switch assembly, and the grid switch assembly includes a first grid switch 81 and a second grid switch 82. One end of the first grid switch 81 is connected with the double-fed motor 2 and the converter 61, and the other end is connected with the power supply system 1; the first power grid switch is switched on and off to control the double-fed motor and the converter to be respectively communicated with the power supply system for electrification; the first grid switch 81 is switched on and off to control the double-fed motor 2 and the power on and off of one side of the converter 61; one end of the second grid switch 82 is connected with the synchronous motor 4 and the converter 61, and the other end is connected with the power supply system 1; and the second power grid switch is switched on and off to control the synchronous motor and the converter to be communicated and electrified with the power supply system respectively. The power grid switch assembly realizes the on-off of the power grid to the mechanism to be tested and the converter 61, so that the dragging experiment of the mechanism to be tested is realized, when the concrete use is ensured, the dragging experiment of any mechanism to be tested can be realized by operating the power grid switch assembly to cooperatively drag the switch assembly, and the safety of the power grid switch assembly in the detection process is further improved.
The dynamic simulation experiment system provided by the embodiment has the following working and using processes:
firstly, when the doubly-fed machine 2 is in operation: the first motor switch 51 and the first power grid switch 81 are both switched on, and the second motor switch 52 and the second power grid switch 82 are both switched off, so that a drag test scene of the direct current motor 3 and the double-fed motor 2 is formed; after the direct current motor 3 rotates to the target rotating speed, the double-fed motor 2 is also dragged to the same rotating speed, the first torque meter 71 monitors the rotating speed of the double-fed motor 2, and the stator voltage and the grid voltage of the double-fed motor 2 are adjusted in a comparison mode through the converter 61.
Secondly, when the synchronous motor 4 is running: the second motor switch 52 and the second power grid switch 82 are both switched on, and the first motor switch 51 and the first power grid switch 81 are both switched off, so that a drag test scene of the direct current motor 3 and the synchronous motor 4 is formed; after the direct current motor 3 rotates to the target rotating speed, the synchronous motor 4 is also dragged to the same rotating speed, the second torque meter 72 monitors the rotating speed of the synchronous motor 4, and the energy feedback of the synchronous motor 4 to the power grid is realized through the converter 61.
In the dynamic simulation experiment system provided by this embodiment, the power or the rotation speed of the mechanism to be tested is adjusted by the variable-current control assembly through the same experiment system by controlling the on/off of the opposite-dragging switch assembly, so that the opposite-dragging experiments of the direct-current motor 3 and the opposite-dragging mechanism are respectively and one by one; therefore, the drag test of the mechanisms to be tested is realized, the electrical performance and the mechanical performance of the mechanisms to be tested are respectively evaluated, and the verification efficiency of the test evaluation system is greatly improved. Furthermore, it is possible to simultaneously pass through modes of the mechanism under test, such as: the generator or the motor rotates forwards or backwards to simulate the working condition of pumped storage power generation or pumped water. And then simulate large-scale pumped storage power station, guarantee the simulation accuracy of movable mould experiment.
In a modified embodiment of this embodiment, the to-be-tested mechanisms may also be generators of two different forms, and then the primary driving mechanism also employs a dc generator, so as to implement the setting of the above-mentioned moving mold experimental apparatus.
In another modified embodiment of this embodiment, the number of the mechanisms to be tested may be increased according to specific use requirements, for example, three or four or more mechanisms may be used to ensure the connection between the mechanisms to be tested and the original mechanism.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (9)
1. A movable mould experiment system is characterized by comprising a power supply system; and electrically connected to the power supply system:
at least two mechanisms to be tested;
the driving mechanism is connected between any two mechanisms to be tested and has a counter-dragging state which is coaxially connected with the mechanisms to be tested and drags the mechanisms to be tested to the same rotating speed;
the device comprises a driving mechanism, a mechanism to be tested and at least one group of oppositely-dragging switch assemblies, wherein any one group of oppositely-dragging switch assemblies is arranged between the driving mechanism and the mechanism to be tested so as to control the communication between the driving mechanism and the mechanism to be tested;
the variable flow control assembly is connected with the mechanism to be tested and controls the actual power of the mechanism to be tested to reach the preset power in the opposite dragging state; and/or the actual rotating speed of the mechanism to be tested reaches the preset rotating speed.
2. A moving die experimental system as claimed in claim 1, wherein any one of said variable flow control assemblies comprises:
the converter comprises a converter and an external control system, wherein the external control system is connected with a control chip of the converter; controlling the actual power of the mechanism to be tested to reach the preset power; and/or the actual rotating speed of the mechanism to be tested reaches the preset rotating speed.
3. The dynamic simulation experiment system of claim 1, further comprising a torque detection mechanism including a torque meter, the torque meter being connected between any one of the mechanisms under test and the motive mechanism for detecting the torque of the motive mechanism in the opposite dragging mode.
4. The dynamic modeling experiment system of claim 2,
the mechanism to be tested is a generator, and the counter-dragging motor is a direct-current generator; or
The mechanism to be tested is an electric motor, and the counter-dragging motor is a direct current motor.
5. The dynamic modeling experiment system of claim 4,
the two mechanisms to be tested are respectively a synchronous motor and a double-fed motor;
the prime mechanism is a direct current motor;
the direct current motor is connected between the synchronous motor and the double-fed motor;
the variable current control assembly is connected between the synchronous motor and the doubly-fed motor and is communicated with the direct current motor in parallel.
6. The dynamic simulation experiment system of claim 5, wherein the converter comprises a motor converter unit and a grid converter unit;
one end of the motor current transformation unit is connected with the stator of the synchronous motor; the other end of the double-fed motor is connected with a rotor of the double-fed motor;
one end of the power grid current transformation unit is connected with the power supply system, and the other end of the power grid current transformation unit is connected with the stator of the double-fed motor and the power supply system.
7. The dynamic simulation experiment system of claim 6, further comprising a grid switching assembly,
one end of the first power grid switch is connected with the double-fed motor and the converter, and the other end of the first power grid switch is connected with the power supply system; the first power grid switch is switched on and off to control the double-fed motor and the converter to be respectively communicated with the power supply system for electrification;
one end of the second power grid switch is connected with the synchronous motor and the converter, and the other end of the second power grid switch is connected with the power supply system; and the second power grid switch is switched on and off to control the synchronous motor and the converter to be communicated and electrified with the power supply system respectively.
8. The dynamic modeling experiment system of claim 5,
the pair drag switch component comprises
A first motor switch and a second motor switch;
one end of the first motor switch is connected with the double-fed motor, the other end of the first motor switch is connected with the direct current motor, and the double-fed motor and the direct current motor are controlled to be switched on and off by opening and closing the first motor switch;
and one end of the second motor switch is connected with the synchronous motor, the other end of the second motor switch is connected with the direct current motor, and the second motor switch is opened and closed to control the on-off of the synchronous motor and the direct current motor.
9. The dynamic modeling experiment system of claim 5,
the power supply system provides a direct current power supply for the direct current motor;
and the power supply system provides an alternating current power supply for the converter, the double-fed motor and the synchronous motor.
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| CN202020644947.7U CN212675112U (en) | 2020-04-24 | 2020-04-24 | Moving die experiment system |
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| CN202020644947.7U CN212675112U (en) | 2020-04-24 | 2020-04-24 | Moving die experiment system |
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