JPH04329383A - Output characteristic testing device for power generator for private use - Google Patents

Abstract

PURPOSE:To carry out successfully the electric power supply test free from the leak of water by an output characteristic tester for a power generator for private use. CONSTITUTION:A testing device for a power generator for private use is equipped with an electric conductive tank 12 charged with a resistor liquid 10, main electrode 14 which is arranged in the electric conductive tank 12 and supplied with electric power from the power generator for private use as test object, movable insulating body 16 which is interposed between the main electrode 14 and the electric conductive tank 12 and adjusts the electric conduction quantity from the main electrode 14 to the electric conductive tank 12, and a circulation piping system 18 which cools and filtrates the resistor liquid 10 in the electric conductive tank 12 and returns the liquid 10 into the electric conductive tank 12 again for reutilization. The main electrode 14 is supporting-suspended over the electric conductive tank 12, and installed so as to be mounted and demounted and replaced, and installed as a part of the piping system 18 over the electric conductive tank 12, and electricity is supplied to the main electrode 14 through an introducing pipe 20 for feeding the resistor liquid 10 into the electric conductive tank 12.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for testing output characteristics of private generators, etc.

[0002] This type of apparatus is used to test the output characteristics of private generators and the like installed in high-rise buildings to cope with emergencies such as power outages.

0003

2. Description of the Related Art A conventional example is shown in FIG. 8, in which a main electrode 14 is disposed in an energizing tank 12, and the lower part of the main electrode 14 is connected to a large diameter terminal 50 which also serves as a bracket. It is attached and supported to a bolt 52 with a nut 54.

An insulating insulator 56 is interposed between the main electrode 14 and the energizing tank 12 and between the energizing tank 12 and the terminal 50, and a bolt penetration hole 58 is provided at the bottom of the energizing tank 12. Packing 60 to prevent water leakage on both ends of
is installed.

The current-carrying tank 12 is filled with a resistance liquid 12, and the terminal 50 and the current-carrying tank 1 supply electricity to the main electrode 14.
2 is connected to a private generator (not shown) via an output cable 62.

[0006] Electricity is then passed between the energizing tank 12 and the main electrode 14 for a required period of time to test the output characteristics of the private generator.

[0007]

However, in the conventional testing apparatus described above, since the lower part of the main electrode 14 is supported by the bolt 52, there is a risk of water leaking from the hole 58 formed in the bottom of the energizing tank 12.

[0008] Particularly during a test, the bolt 52 generates heat and reaches a high temperature due to energization, so there is a high possibility that the packing 60 and the insulator 56 will be damaged, and they will deteriorate quickly over time.

It is also possible that the bolt 52 may be damaged due to heat generation, but if the diameter of the bolt 52 is made larger than this in order to increase its durability, the cost will be extremely high.

The present invention has been made in view of the above-mentioned conventional circumstances, and an object thereof is to provide an output characteristic testing device for a private generator, etc., which can perform power supply tests satisfactorily without fear of water leakage.

[0011]

[Means for Solving the Problems] In order to achieve the above object, a test apparatus according to the present invention is constructed as follows.

FIG. 1 shows the configuration of the present invention. First, to explain the first invention, as shown in FIG. 1(A), an energizing tank 12 filled with a resistance liquid 10 is
A main electrode 14 is arranged to receive power from a private generator or the like to be tested.

The main electrode 14 is supported and suspended above the current-carrying tank 12, and is attached so as to be detachable and replaceable.

A movable insulator 16 is interposed between the main electrode 14 and the current-carrying tank 12 to adjust the amount of current flowing from the main electrode 14 to the current-carrying tank 12.

A circulation piping system 18 is connected to the energizing tank 12 for cooling or filtering the internal resistance liquid 10 and returning it to the energizing tank 12 in order to reuse it.

An introduction pipe 20 that is part of the piping system 18 and that carries the resistance liquid 10 into the energization tank 12 is installed above the energization tank 12. Electricity is transmitted.

In the second invention, the main electrode 14 is of the low voltage type 14 in accordance with the standard voltage of the private generator to be tested.
It is possible to select and replace either the high voltage type 14b (see FIG. 1(B)) or the high voltage type 14b (see FIG. 1(B)).

Furthermore, in the third invention, in addition to the above configuration,
A flow rate adjusting member 22 for adjusting the flow rate of the resistance liquid 10 sent to the energizing tank 12 is provided at the proximal end of the introduction tube 20 .

In addition to this, in the fourth invention, the introduction pipe 20 is covered with an insulating material 24.

[0020]

[Operation] In the present invention, since the main electrode 14 is supported above the energizing tank 12 and suspended, there is no need to drill a hole in the energizing tank 12 for inserting the main electrode 14 support member. .

Furthermore, since the main electrode 14 is detachably and replaceably attached, it can be used for either low voltage or high voltage, depending on the standard voltage of the private generator to be tested.

Furthermore, since the introduction tube 20 through which the main electrode 14 is energized is cooled by the resistance liquid 10 flowing therein, there is no risk of dielectric breakdown due to discharge.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 shows the overall configuration of the embodiment, in which four energizing tank units 28 are provided above the communication tank 26.

Since the commonly used generator is a three-phase AC type, the energizing tank unit 28 is
This is because three units are installed, and one unit is provided as a backup.

The energizing tank unit 28 includes a substantially cylindrical energizing tank 12 provided above the communication tank 26, a main electrode 14 disposed in the energizing tank 12 in a suspended state, and the energizing tank 1.
2 and a movable insulator 16 interposed between a main electrode 14 and a main electrode 14. Each energizing tank 12 is filled with a resistance liquid (usually water is used) 10.

Inside each energizing tank 12, an introduction tube 20 whose outer periphery is covered with an insulating material 24 such as Teflon is disposed extending from above, and a main electrode 14 is disposed at the tip of the introduction tube 20. It is attached in a removable and replaceable manner.

A substantially cylindrical movable insulator 16 interposed between the energizing tank 12 and the main electrode 14 is supported by a lifting device 38 .

Furthermore, the communication tank 26 collects the resistance liquid 10 in each of the energizing tanks 12 placed thereon,
It plays the role of sending water to the radiator 32.

Furthermore, the communication tank 26 is connected to the energized tank 1 during operation.
2... has the role of introducing the air generated inside the tank, moving it to a spare energizing tank 12 that is not in operation, and releasing the air there. That is, if the current is applied in a state where a large amount of air is mixed in the current-carrying tank 12, an arc will be generated, which will adversely affect the load balance and make it impossible to conduct an accurate test.

A tank 40 is provided above the energizing tank 12, and the tank 40 is connected to each inlet pipe 20 with a voltage-resistant and corrosion-resistant flexible hose 42.

An introduction main pipe 21 for supplying the resistance liquid 10 is attached to the tank 40, and a flow rate for adjusting the flow rate of the resistance liquid 10 flowing into the introduction pipe 20 is provided between the tank 40 and the flexible hose 42. A regulating valve 22 is attached.

A drain pipe 44 for discharging the resistance liquid 10 is attached to the communication tank 26 below the energizing tank 12, and a pump 46 is attached to the drain pipe 44.

The drain pipe 44 is connected to the radiator 32, and the main inlet pipe 21 is connected to the outlet side of the radiator 32.

The drain pipe 44 and the main introduction pipe 21 are also connected to a filtration device 48, and the resistance liquid 10 may be filtered by the filtration device 44 without passing through the radiator 32.

Furthermore, a connecting terminal bar 36 is attached to the upper end of the introduction pipe 20 via an insulating insulator 34.
The connection terminal bar 36 and the terminal on the energizing tank 12 side (not shown)
The cable from the private generator to be tested is connected to.

The structure of the main electrode 14 is shown in FIGS. 4 and 5.

FIG. 4 shows a generally cylindrical main electrode 14a, and this type is used for testing low voltage generators of 200-400V.

FIG. 5 shows a main electrode 14b having an elongated cylindrical shape and an oval vertical cross section.
Used for testing 600V high voltage generators.

These main electrodes 14a, 14b are detachably connected to the introduction pipe 20 via the flange 15, and can be easily selected and replaced in accordance with the standard voltage of the generator.

In addition to using the flange 15 at the connection part with the introduction pipe 20, a socket 17 may be used as shown in FIG. 6, or a female thread may be formed on one side and a male thread may be formed on the other side as shown in FIG. It may also be possible to screw it in.

Next, the operation of the embodiment will be explained.

[0043] When a private generator (not shown) is driven,
Electricity is applied between the main electrode 14 and the current-carrying tank 12, and an output characteristic test is started.

During the test, the movable insulator 16 is moved by the lifting device 38.
As a result, the area between the main electrode 14 and the energizing tank 12 that can be energized changes, and the amount of energization is adjusted.

[0045] Also, each energized tank 1 whose temperature has increased due to energization
The resistance liquid 10 in . The liquid is pooled in the expansion tank 40 and supplied to each energizing tank 12 again through the flexible hose 42 and the introduction pipe 20.

At this time, the flow rate adjustment valve 22 on the side of the spare energizing tank unit 28 is closed, and the resistance liquid 12 is circulated in the other three energizing tank units 28.

Although the resistance liquid 10 is not circulated in the spare energizing tank 12 in this way, this spare energizing tank 1
The resistance liquid 10 existing in the energizing tank 2 mixes with the resistance liquid 10 in the other energizing tank 12 via the communication tank 26.
Therefore, the temperature of the resistance liquid 10 in the three energized tanks 12 that are operated becomes almost uniform together with the flow rate adjustment by the flow rate adjustment valve 22, so that the load in each tank is well balanced and the test can be performed accurately. It will be possible to do it.

Furthermore, in order to prevent the temperature of the resistance liquid 10 from rising above a set value during operation, the radiator 32 is cooled by a fan 33. Note that the resistance liquid 10 is filtered by a filtering device 48 if necessary (mainly when used for high voltage tests).

As explained above, according to this embodiment, the main electrode 14 is supported at its upper part by the introduction pipe 20 and is placed in the energizing tank 12 in a suspended state.
There is no need to form a penetration point at the bottom of the energizing tank 12 (communication tank 20) for attaching the 4 support members, and therefore there is no risk of water leakage.

Furthermore, since no custom-made parts are used when attaching the main electrode 14, there is no risk of an increase in manufacturing costs.

Furthermore, since the main electrode 14 is attached in a removable and replaceable manner, it can be used for either low voltage or high voltage according to the standard voltage of the private generator to be tested, and requires less maintenance. It's easy to do.

Furthermore, since the introduction tube 20 through which the main electrode 14 is energized is cooled by the resistance liquid 10 flowing inside it and is further coated with an insulating material 24, there is no risk of dielectric breakdown due to electrical discharge. . Therefore, the test can be performed safely and successfully.

Furthermore, since the flow rate of the resistance liquid 10 supplied to the energizing tank 12 can be adjusted by the flow rate adjustment valve 22, more precise water temperature control can be performed.

[0054]

[Effects of the Invention] As explained above, according to the present invention, since the main electrode is placed in the energizing tank in a suspended state, there is no need to form a penetration point at the bottom of the energizing tank. There is no risk of water leakage.

Furthermore, since no custom-made parts are used when attaching the main electrode, there is no risk of an increase in manufacturing costs.

[0056] Furthermore, since the main electrode is detachably and replaceably attached, it can be used for either low voltage or high voltage according to the standard voltage of the private generator to be tested, and maintenance is also easy. can be done.

[0057] Furthermore, since the introduction pipe through which the main electrode is energized is cooled by the resistance liquid flowing inside it and covered with an insulating material, there is no risk of dielectric breakdown due to discharge. , the test can be performed safely and successfully.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the overall configuration of the present invention.

FIG. 2 is a front view showing the overall configuration of the embodiment.

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a partial cross-sectional view (part 1) showing a state in which the main electrode is attached.

FIG. 5 is a partial cross-sectional view (part 2) showing the state in which the main electrode is attached.

FIG. 6 is a partially enlarged view (part 1) showing an example of the connection between the main electrode and the introduction tube.

FIG. 7 is a partially enlarged view (part 2) showing an example of the connection between the main electrode and the introduction tube.

FIG. 8 is a sectional view showing a conventional example.

[Explanation of symbols]

10 Resistance liquid 12　Electrification tank 14 Main electrode 16 Movable insulator 18 Piping system 20 Introductory pipe 22 Flow rate adjustment valve 24 Insulating material 26 Communication tank 28　Electrification tank unit 32 Radiator 34 Insulating insulator 36 Connection terminal bar 38 Lifting device 40 Tank 42 Flexible hose 44 Drain pipe 46 Pump 48 Filtration device

Claims (4)

[Claims] Claim 1: A current-carrying tank (12) filled with a resistance liquid (10), and a main electrode (14) arranged in the current-carrying tank (12) and receiving power from a private generator or the like to be tested.
), a movable insulator (16) interposed between the main electrode (14) and the energizing tank (12) and adjusting the amount of current flowing from the main electrode (14) to the energizing tank (12); In order to reuse the resistance liquid (10) in 12), a circulation piping system (18
), in a testing device for a private generator, etc.
The main electrode (14) is supported and suspended above the energizing tank (12), and is detachably and replaceably attached to the energizing tank (12) as part of the piping system (18).
12) A resistance liquid (
The main electrode (1
4) An output characteristic testing device for a private generator, etc., characterized in that power is transmitted to. 2. The main electrode (14) for a private generator according to claim 1, wherein either a low voltage type or a high voltage type can be selected and replaced according to the standard voltage of the private generator to be tested. Output characteristics testing equipment for generators, etc. [Claim 3] Resistance liquid (10
3. The output characteristic testing device for a private generator or the like according to claim 1 or 2, further comprising a flow rate adjustment member (22) for adjusting the flow rate of the generator. 4. The output characteristic testing device for a private generator or the like according to claim 1, 2 or 3, wherein the introduction pipe (20) is covered with an insulating material (24).