Dual-voltage specification generator set test load box

Abstract

The utility model discloses a double voltage specification generator set test load box, comprising a load box body, the front side of the load box body is hinged with two reactor access doors through pin shafts, the inner wall of the load box body is fixedly provided with a control cabinet, the inner wall of the load box body is fixedly provided with a plurality of groups of resistor modules, and the resistor modules are connected with the control cabinet. Two sets of electrical parameter collectors are fixedly installed on the inner wall of the load box body, two sets of threshold switches are fixedly installed on the inner wall of the load box body, two smoke alarms are fixedly installed on the inner top wall of the load box body, and a plurality of air outlet cover plates are fixedly embedded in the outer surface of the load box body. And a heat dissipation fan is fixedly mounted in the load box body. According to the double-voltage-specification generator set test load, through conversion of a three-phase generator set star-delta wiring mode and fine adjustment of power through a software algorithm, test requirements of generator sets of two voltage specifications are met within design precision, and the workload of wiring and test preparation is reduced.

Description

Technical Field

[0001] The utility model relates to the field of generator set testing, in particular to a generator set testing load box with dual voltage specifications. Background Art

[0002] A generator refers to a mechanical device that converts other forms of energy into electrical energy. The basic structure of a generator consists of two parts: a rotor and a stator. The rotor is located in the central cavity of the stator. The rotor is equipped with magnetic poles that can generate a magnetic field. When the prime mover drives the rotor to rotate, mechanical energy is transmitted. The magnetic poles of the rotor rotate at high speed with the rotor. At this time, the magnetic field interacts with the stator winding. The magnetic field cuts the conductor of the stator winding and generates an induced potential, thereby converting mechanical energy into electrical energy.

[0003] At present, the factory testing, regular maintenance, installation and commissioning of generator sets all require the use of load boxes to absorb electrical energy and detect generator performance. For generator manufacturers, there are many types of generator sets, and the voltage specifications that need to be tested involve 400V, 690V, 6.3kV, and 10.5kV. The existing generator set test loads are mostly single voltage specifications. When generator manufacturers test generator sets of different specifications, they need to use load boxes of different specifications or use transformers to change the voltage. These two methods take up a lot of space and use a large number of transformer cables, which is very costly for users. For this reason, we propose a dual-voltage specification generator set test load box to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a dual-voltage specification generator set test load box to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A dual-voltage specification generator set test load box comprises a load box body, wherein the front side of the load box body is hinged with two reactor inspection doors via a pin shaft, a control cabinet is fixedly installed on the inner wall of the load box body, a plurality of resistance modules are fixedly installed on the inner wall of the load box body, two groups of electrical parameter collectors are fixedly installed on the inner wall of the load box body, two groups of threshold switches are fixedly installed on the inner wall of the load box body, two smoke alarms are fixedly installed on the inner top wall of the load box body, a plurality of air outlet cover plates are fixedly inlaid on the outer surface of the load box body, and a heat dissipation fan is fixedly installed inside the load box body.

[0007] As a preferred technical solution of the present application, two air inlets are provided on the front of the load box, a wiring compartment is fixedly embedded on the outer surface of the load box, and a control room is arranged inside the load box.

[0008] As a preferred technical solution of the present application, a plurality of resistance inspection doors are fixedly installed on the front of the load box, and a maintenance passage is provided inside the load box.

[0009] As a preferred technical solution of the present application, ventilation fans are fixedly connected to the left and right side surfaces of the load box, and the two ventilation fans are respectively located above the two heat dissipation fans.

[0010] As a preferred technical solution of the present application, the load box is electrically connected to a three-phase generator set through wires, the control cabinet is electrically connected to a host computer through wires, and the control cabinet is electrically connected to a cooling fan, an electrical parameter collector and a smoke alarm through wires.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] This device, through two voltage specification loads, shares a main circuit control system and resistance unit, greatly saves cost and reduces volume. The shared resistance unit is designed with a margin capacity, and the rated power can be met during loading tests under dual voltage specifications. The software automatically calculates and improves the loading resistance accuracy after voltage switching, improves test accuracy, switches voltage specifications with one button, reduces wiring work, and facilitates quick testing. Through the conversion of the star-delta wiring method of the three-phase generator set, and the software algorithm fine-tunes the power, the testing needs of the generator sets with two voltage specifications are met within the design accuracy, reducing the workload of wiring and test preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the front view of the test load box of the dual-voltage generator set.

[0014] Figure 2 This is a cross-sectional view of the front view of the load box for dual voltage specification generator set testing.

[0015] Figure 3 This is a cross-sectional view of the bottom view of the test load box for dual voltage specification generator sets.

[0016] Figure 4 This is a three-dimensional structural diagram of the rear view of the test load box for a dual-voltage generator set.

[0017] Figure 5 This is a schematic diagram of the structure of the load box system for testing dual-voltage generator sets.

[0018] In the figure: 1. Load box; 2. Reactor maintenance door; 3. Control cabinet; 4. Resistance module; 5. Electric parameter collector; 6. Threshold switch; 7. Smoke alarm; 8. Cooling fan; 9. Air outlet cover; 10. Ventilation fan; 11. Resistance maintenance door; 12. Maintenance passage; 13. Air inlet; 14. Wiring compartment; 15. Control room; 16. Three-phase generator set; 17. Host computer. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-5 In the utility model, a dual-voltage specification generator set test load box includes a load box body 1, the front of the load box body 1 is hinged with two reactor maintenance doors 2 through a pin shaft, a control cabinet 3 is fixedly installed on the inner wall of the load box body 1, a plurality of resistance modules 4 are fixedly installed on the inner wall of the load box body 1, two sets of electrical parameter collectors 5 are fixedly installed on the inner wall of the load box body 1, two sets of threshold switches 6 are fixedly installed on the inner wall of the load box body 1, two smoke alarms 7 are fixedly installed on the inner top wall of the load box body 1, a plurality of air outlet cover plates 9 are fixedly inlaid on the outer surface of the load box body 1, a heat dissipation fan 8 is fixedly installed inside the load box body 1, the resistance module 4 is composed of a plurality of resistance modules 4 of different powers, which can be used in any combination, and the power parameter is input after the load box body 1 is powered on, and the threshold switch 6 corresponding to the main circuit is closed, and the plurality of resistance modules 4 are combined into the required resistance value, and the corresponding electric power is consumed after power is turned on.

[0021] Two air inlets 13 are provided on the front of the load box 1, a wiring compartment 14 is fixedly inlaid on the outer surface of the load box 1, a control room 15 is arranged inside the load box 1, a plurality of resistor inspection doors 11 are fixedly installed on the front of the load box 1, and a maintenance passage 12 is arranged inside the load box 1. The air inlets 13 are used to ensure the ventilation requirements inside the load box 1, and the resistor inspection doors 11 and the maintenance passage 12 are used to facilitate the internal inspection and maintenance of the load box 1.

[0022] The left and right sides of the load box 1 are fixedly connected with ventilation fans 10, and the two ventilation fans 10 are respectively located above the two cooling fans 8. The load box 1 is electrically connected to the three-phase generator set 16 through wires, and the control cabinet 3 is electrically connected to the host computer 17 through wires. The control cabinet 3 is electrically connected to the cooling fan 8, the electrical parameter collector 5 and the smoke alarm 7 through wires.

[0023] The working principle of the utility model is: first, the device is connected to the power supply, and then taking the common 10.5kV and 6.3kV of the three-phase generator set 16 as an example, the voltage is about 6.06kV, which is close to the target voltage 6.3kV, but there is still a certain error. Through the calculation of the host computer 17 software, the error can be controlled within the design accuracy after fine-tuning the power, and the three-phase generator set 16 test with two voltage specifications is met. Then, when the internal resistance module 4 of the load box 1 is working, the electrical energy is converted into thermal energy, and the heat is dissipated by the heat dissipation fan 8 to prevent overheating of components. Then the internal electrical parameter collector 5 of the load box 1 sends the voltage, current, power, frequency, power factor and other parameters during operation to the control cabinet 3, and then sends them to the host computer 17 for processing.

[0024] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and utility model concept of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, so it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A dual voltage specification generator set test load box, characterized by: The invention comprises a load box (1), the front of the load box (1) being hinged with two reactor inspection doors (2) via a pin shaft, the inner wall of the load box (1) being fixedly mounted with a control cabinet (3), the inner wall of the load box (1) being fixedly mounted with a plurality of resistance modules (4), the inner wall of the load box (1) being fixedly mounted with two sets of electrical parameter collectors (5), the inner wall of the load box (1) being fixedly mounted with two sets of threshold switches (6), the inner top wall of the load box (1) being fixedly mounted with two smoke alarms (7), the outer surface of the load box (1) being fixedly inlaid with a plurality of air outlet cover plates (9), and the interior of the load box (1) being fixedly mounted with a heat dissipation fan (8).

2. A dual voltage specification generator set test load box according to claim 1, characterized in that: The front of the load box (1) is provided with two air inlets (13), the outer surface of the load box (1) is fixedly inlaid with a wiring compartment (14), and the interior of the load box (1) is provided with a control room (15).

3. A dual voltage specification generator set test load box according to claim 1, characterized in that: A plurality of resistance inspection doors (11) are fixedly mounted on the front of the load box (1), and a maintenance passage (12) is provided inside the load box (1).

4. A dual voltage specification generator set test load box according to claim 1, characterized in that: The left and right side surfaces of the load box (1) are both fixedly connected with ventilation fans (10), and the two ventilation fans (10) are located above the two heat dissipation fans (8).

5. A dual voltage specification generator set test load box according to claim 1, characterized in that: The load box (1) is electrically connected to a three-phase generator set (16) via wires, the control cabinet (3) is electrically connected to a host computer (17) via wires, and the control cabinet (3) is electrically connected to a cooling fan (8), an electrical parameter collector (5), and a smoke alarm (7) via wires.

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