JPH0370451A - Test equipment of non-utility generator and so on - Google Patents

Abstract

PURPOSE:To miniaturize an apparatus to conserve a resistance liquid by fixing electrodes in the resistance liquid within an electrifying tank, causing a movable insulator to go up and down between the electrode and the wall surface of the electrifying tank, and by cooling and circulating the resistance liquid to keep the liquid at a constant temperature. CONSTITUTION:A test equipment is constituted by three actually used testing device units 1 and one reserve unit 1 as equipment for three-phase AC output. In each unit 1, a cylindrical conducting tank 2 capable of electrifying the inner wall is filled with resistance water 3 and constituted by a cylindrical insulator 5 supported by a supporting member 7 and going up and down by an elevator apparatus 8 and by an electrode 4 with the lower end fixed by an insulator material 6 and with the upper end connected with a supporting rod 24. The resistance water circulates through the course of drain pipe 9, pump 12, cooling device 11 and lead-in pipe 10 to be kept at a room temperature. The insulator 5 is caused to go up and down to control the magnitude of the load current of a generator. Thus, an apparatus is miniaturized and the usage of the resistance water is reduced. The apparatus is suitable for use in the roof of a multistoried building.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention provides a private generator, etc. that can be used in advance to test the performance of a private generator installed in a high-rise building in order to cope with emergencies such as power outages. This test equipment is used for testing.

[Conventional technology]

As shown in Fig. 6, the conventional energization testing device for a private generator is a rectangular energizing tank 31 in which resistance water 32 at around 20 degrees Celsius flows into the resistance water 32, and a device protruding from three directions into the resistance water 32. A pair of electrode plates 33, which are held movable up and down, are immersed in the water, and in this state, electricity generated from a private generator is applied between the electrode plates 33 for a required period of time, and the electricity generated by the private generator is immersed. It was intended to test and confirm performance such as ability or durability.

That is, for example, output 1000KVA, power factor 0, 8
, when a private generator with a voltage of 415V is operated and electricity is passed between the electrode plates 3 in the energizing tank 1, the current is constantly 642.6A.
current flows.

If this continues for about 3 hours and there is no abnormality in the performance of the private generator, it can be certified as having a predetermined power generation capacity and durability.

However, the temperature of the resistance water 32 in the energized tank 31 rises due to the energization, and reaches about 80 degrees Celsius when overflow is drained from the drain port 35 as shown.

By the way, the degree of current conduction between the electrode plates 33 in the resistance water 32 is significantly influenced by the rise or fall of the temperature of the resistance water 32 in the energizing tank 31 or the degree of contamination of impurities in the resistance water 32. Test conditions set, for example, output 1000KVA, power factor 0.8, voltage 415V,
When a 642.6A private generator is operated, a change occurs in the conditions for energizing between the electrode plates 33 in the energizing tank 33, and a current of 642.6A or more is passed in the energizing tank 31. This situation arises.

This in turn overloads the engine driving the generator.

Therefore, in the conventional test equipment, the above-mentioned 6
The electrode plate 33 and
... to adjust the current-carrying area of the electrode plate 33 in the resistance water 32, or to suppress the temperature rise of the resistance water 32 in the energization tank 31 by replenishing low-temperature resistance water from the supply port 34. That's what I was doing.

[Problem to be solved by the invention]

However, such conventional testing equipment has the disadvantage that it is large in size, extremely inconvenient to transport, and requires too much effort to prepare for installation.

Furthermore, during the test, the resistance water 32 must be constantly replenished, which requires a large amount of water, which is uneconomical.

This invention was devised to address the above-mentioned conventional problems, and the device can be miniaturized so that even a private generator installed in a location can be tested, and it can be It is an object of the present invention to provide a test device for a private power generator that can prevent an abnormal increase in the current flowing in the generator with a simple operation and that does not waste resistance water.

[Means to solve the problem]

The test device for a private generator or the like according to the present invention includes an energizing tank, a resistance liquid in the energizing tank, which is arranged in the energizing tank from above to the bottom, and the tip is connected to the bottom of the energizing tank through an insulating member. At the same time, the entire body is immersed in the resistance liquid, and can be energized by receiving power for the required time from a private generator, etc. to be tested.
a movable insulator disposed in the energizing tank to make the amount of current flowing through the electrode variable; and a cooling device that cools the resistance liquid in the energizing tank and maintains its temperature substantially constant. It is characterized by having a plurality of test equipment units.

〔Example〕

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

In the drawings, reference numeral 1 indicates a test equipment unit.

As shown in FIG. 1, four test equipment units 1 are provided. This is because the generators generally used are of the three-phase type, so three test equipment units 1 are required, and one additional unit is provided as a backup.

The test equipment unit 1 includes an energizing tank 2, a resistance water 3 supplied into the energizing tank 2, an electrode 4 and an insulator 5 arranged in the energizing tank 2, and a cooling device for cooling the resistance water 3. It consists of 11.

The energizing tank 2 has a cylindrical shape.

An introduction pipe 10 is provided above the energizing tank 2, and a drain pipe 9 is provided at the lower end. Inlet pipe 10, drain pipe 9
is connected to the cooling device 1o, and a pump 12 is attached to the drain pipe 9.

Therefore, the resistance water 3 whose temperature has increased in the energized tank 2 is sent from the lower end of the energized tank 2 through the drain pipe 9 to the cooling device 11 by the pump 12, and passes through the cooling device 11 for heat exchange, that is, to be cooled. Thereafter, it is supplied into the energizing tank 2 again through the introduction pipe 10. Therefore, the resistance water 3 in the energizing tank 2 is always kept at a constant temperature (20 to 50 degrees Celsius).

The electrode 4 arranged in the current-carrying tank 2 is formed into a substantially cylindrical shape. The upper end of the electrode 4 is supported via a support rod 24 on a protection plate 25 provided on the upper part of the energization tank 2 . Further, the lower end of the electrode 4 is supported by an insulating member 6 which is provided at the bottom of the current-carrying tank 2 by one inch. The electrode 4 is connected to a private generator to be tested, and is configured to be able to conduct electricity from the electrode 4 to the inner wall of the energizing tank 2.

As mentioned above, not only the upper end but also the lower end of the electrode 4 is supported, so even if the influence of the magnetic field inside the energizing tank 2 or an external force such as an earthquake acts, the end of the electrode 4 will not touch the inner wall of the energizing tank 2. There is no chance of shooting due to contact, so it is very safe.

A substantially cylindrical insulator 5 is disposed between the energizing tank 2 and the electrode 4. The upper end of the insulator 5 is supported by a support member 7, and the support member 7 is connected to a lifting device 8.

Therefore, the insulator 5 can be moved up and down with respect to the current-carrying tank 2, and by moving the insulator 5 up and down, the current-carrying area is changed and the i generated between the N pole 4 and the inner wall of the current-carrying tank 2 is changed.
! ! It is designed so that the amount of electricity can be adjusted accurately.

2 and 3 show other embodiments of the insulator 5. FIG.

In this embodiment, the insulator 6 is composed of an inner tube 13 and an outer tube 14. 3fl for inner tube 13 and outer tube 14
Rectangular openings 15 are formed at locations L, and either one of the inner tube 13 and the outer tube 14 is configured to be able to rotate in the circumferential direction within the energizing tank 2.

Therefore, by rotating the inner tube 13 or the outer tube 14, the current-carrying area can be changed, and the amount of current flowing between the electrode 4 and the inner wall of the current-carrying tank 2 can be accurately pm.

FIG. 4 is a flowchart showing an embodiment of the cooling system for the resistance water 3.

The resistance water 3 whose temperature has increased in the energizing tank 2 is sent through the drain pipe 9 to the radiator 17 by the pump 12 and cooled, and then supplied into the energizing tank 2 again through the introduction pipe 10.

However, during operation, the resistance water 3 is contaminated with impurities, resulting in an increase in electrical conductivity. Particularly in high-pressure tests, pure water is used as the resistance water 3, which is likely to be contaminated.

Therefore, in order to prevent an increase in electrical conductivity, it is necessary to filter the resistance water 3.

For this reason, the radiator 17 has a discharge pipe 22 and a supply pipe 23.
are connected.

The discharge pipe 22 is connected to the filtration device 16 via the pump 20 and the radiator 18, and the outlet of the filtration device 16 is connected to the supply pipe 23. Further, the pump 20 is connected to a pipe that connects to the water tank 19 via a solenoid valve.

Therefore, when the pump 20 is operated, the contaminated resistance water 3
from the radiator 17 through the discharge pipe 22 to the radiator 18
After passing through the water and being further cooled, the water passes through the filtration device 16 to become highly pure resistance water 3, and is supplied to the radiator 17 again through the supply pipe 23.

The pump 21 is used to spray the resistance water 3 in the water storage tank 19 onto the radiator 17 and use the heat of vaporization to increase the heat exchange efficiency.

In this way, the present invention employs a system in which the resistance water 3 can be used without wasting it at all.

In the above, the state of use of the present invention will be explained.

First, resistance water 3 having a temperature of about 20 degrees Celsius is supplied into the energizing tank 2 from the water storage tank 19.

Next, the electrode 4 in the energizing tank 2 and the generator to be tested are connected.

For example, the specifications of the generator to be tested are: output 1000KVA, power factor 0. 8. Operate a generator with a voltage of 415 V and a current value of 642.6 A for a predetermined time (about 3 hours).

If the generator is operated for a long time, the temperature of the resistance water 3 in the energization tank 2 will rise due to the current flow between the electrode 4 and the inner wall of the energization tank 2, and the resistance water 3 will be contaminated.

This means that it becomes easier for current to flow in the energizing tank 2, and as a result, the amount of energization increases and a current of 642.6 A or more tends to flow.

In order to prevent this, the temperature of the resistance water 3 in the energizing tank 2 is cooled by a cooling device 11.

In addition, in the test at high pressure, the resistance water 3 is further filtered by the filtration device 16 to make the resistance water 3 of high purity, making it difficult to conduct electricity. That is, the output is 1000KVA.

In high-pressure tests such as a power factor of 0.8, a voltage of 6600 V, and a current of 700 A, the resistance water 3 is filtered by the filtration device 16 and constantly maintained as pure water containing no impurities.

Furthermore, the insulator 5 installed in the energizing tank 2 is moved to reduce the energizing area of the electrode 40. This is the start of st8! The preset current value of 642.6A can be reliably maintained to avoid overloading the engine driving the motor.

FIG. 5 is a flowchart showing another embodiment of the cooling system for the resistance water 3.

In this embodiment, a water-cooled radiator 2 (6) is used as a heat exchanger for cooling the resistance water 3.

As shown in the figure, the resistance water 3 whose temperature has increased in the energizing tank 2 is
Water-cooled radiator 26 by pump 12 through discharge pipe 9
After that, the liquid is sent through the introduction pipe 10 and supplied into the energizing tank 2 again.

On the other hand, the water cooling radiator 26 has a supply pipe 23 and a discharge pipe 24.
The other ends of the supply pipe 23 and the discharge pipe 24 are connected to a radiator (air cooling type) 27. Then, liquid is supplied from the supply pipe 23 into the water-cooled radiator 26 .

This liquid undergoes heat exchange with the resistance water 3 whose temperature has increased within the water cooling radiator 26, and becomes a liquid whose temperature has increased. The liquid whose water temperature has increased is discharged from the discharge pipe 24, sent into the radiator 27 by the bong 128 and cooled, and then sent through the supply pipe 23 again into the water-cooled radiator 26.

Note that a coolant is used as the liquid used for cooling the resistance water 3. This is to prevent corrosion inside the water-cooled radiator 26 and the radiator 27, and to facilitate maintenance such as not having to replace the liquid for a long period of time.

According to this embodiment, the amount of resistance water 3 used can be further reduced.

Incidentally, although the above embodiment has been described as an energization test device for a private generator, the present invention can be modified in various ways, such as a energization test device for a large battery, in accordance with its purpose, and these are not excluded from the present invention. do not have.

〔Effect of the invention〕

The present invention has the above configuration, and according to the present invention, the device can be miniaturized and can be easily installed in any location, for example, even if it is a private generator installed on the top floor of a high-rise building. It can be installed and tested, and it is possible to prevent abnormal increases in current during testing with a simple operation.Furthermore, the temperature can be kept constant without wasting resistance water. , generators, etc., can be tested without overloading the engine.

Further, since the test apparatus of the present invention is composed of a plurality of test apparatus units, the arrangement of the energizing tank, the cooling device, etc. can be freely arranged.

Furthermore, since a cooling device is provided for each energizing tank, the temperature of the resistance water in each energizing tank can be controlled more accurately.

Furthermore, since the tip of the electrode is fixed to the bottom of the energizing tank via an insulating member, there is no possibility that the tip of the electrode will come into contact with the inner wall of the energizing tank during the test and cause a short circuit. Therefore, it is highly safe.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional schematic diagram of a test device according to the present invention, Fig. 2 is a front view showing another embodiment of the insulator, and Fig. 3 is a T of Fig. 2.
-1 line sectional view, Figure 4 is a flowchart showing one embodiment of the resistance water cooling system, Figure 5 is a flowchart showing another embodiment of the resistance water cooling system, and Figure 6 is a conventional test equipment. FIG. l... Test equipment unit, 2... Current carrying tank, 3... Resistance water, 4... Electrode, 5... Insulator, 6... Insulating member, 7... Supporting member, 8 ...Lifting device, 9...Drain pipe, 10...Introduction pipe, 11...Cooling device, 12...Pump, 13...Inner pipe, 14...Outer pipe, 15... - Frontage part, 16... Filtration device, 17... Radiator, 18... Radiator, 19... Water tank, 20... Pump, 21... Pump, 22... Discharge pipe, 23 ... Supply pipe, 24 ... Support rod, 25 ... Protection plate, 26 ... Water cooling radiator, 27 ... Radiator, 28 ... Pump, 31 ... Current-carrying tank, 32 ... Resistance water, 33... Electrode plate, 34... Supply port, 35... Drain port. Figure 3 Figure 5 Engraving of Figure Figure 5

Claims (1)

[Scope of Claims] An energizing tank; a resistance liquid in the energizing tank; disposed in the energizing tank from above to below; a tip fixed to the bottom of the energizing tank via an insulating member; An electrode that is entirely immersed in the resistance liquid and can be energized by receiving power for the required time from a private generator or the like to be tested, and an electrode that is placed in the energization tank and can vary the amount of energization of the electrode a movable insulator that cools the resistance liquid in the current-carrying tank and maintains its temperature substantially constant; test equipment.