JPH0525373U - Gas filled container - Google Patents

Abstract

(57) [Summary] [Structure] In this container, a soft soft partition wall 8 is provided inside a hard case 4. A target gas such as SF6 is injected into one side of the soft partition wall 8. Further, on the other side of the soft partition wall 8, an intake / exhaust gas for operation, such as nitrogen, is injected in order to inhale and exhaust the target gas. That is, when nitrogen is injected from the intake / exhaust holes 5, the target gas is expelled from the intake / exhaust holes 7. On the other hand, when nitrogen is extracted from the intake / exhaust hole 5, the target gas is fully injected into the hard case 4 from the intake / exhaust hole 7. In this case, the two gases are separated by the soft partition wall 8 and do not mix. [Effect] An electrical test or the like can be performed while collecting an expensive target gas without letting it escape to the atmosphere.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a gas filled container for filling an insulating gas during an electrical test of a high voltage device.

[0002]

[Prior Art]

 For example, the junction box in gas used as the termination of a high-voltage cable was subjected to the following tests after production to measure its electrical characteristics. FIG. 4 shows a vertical cross-sectional view of a conventional gas filled container for a test of a terminal junction box in gas. In the figure, the cable 1 is terminated in a termination junction box 2. The terminal connection box 2 is assembled on the case flange 3, and the case 4 is put on the case flange 3 during the electrical test. Then, SF 6 gas is sealed inside the case 4 and a predetermined high voltage is applied. After the test is completed, the terminal connection box 2 is taken out from the case 4. In this case, the SF6 gas sealed inside the case 4 is released into the atmosphere. However, SF6 gas is extremely expensive, and it is desirable to collect and use it. For this reason, a device has been developed for collecting the SF6 gas contained in the case 4 without opening the intake / exhaust port 5 and mixing with the air.

[0003]

[Problems to be solved by the device]

 However, the device that recovers the SF6 gas enclosed in the case 4 of this type of structure and re-encloses it in the case 4 in the next test is conventionally extremely expensive, and the equipment cost becomes huge. was there. The present invention has been made with the above points in mind, and a gas that can be easily collected by enclosing an expensive target gas for testing in the case or releasing it into the atmosphere. It is intended to provide a sealed container.

[0004]

Means for Solving the Problems The gas filled container according to the present invention comprises a hard case which is not easily deformed, a soft soft partition wall provided inside the hard case to partition the hard case, and an outer wall of the hard case. Through which the target gas intake / exhaust holes are provided, the outer wall of the hard case is penetrated, and the other side of the soft partition is provided with the intake / exhaust gas intake / exhaust holes. It is a feature.

[0005]

[Action]

 This container has a flexible soft partition inside a hard case. A target gas such as SF6 is injected into one side of the soft partition. Further, on the other side of the soft partition wall, a gas for intake / exhaust operation, such as nitrogen, is injected to inhale and exhaust the target gas. That is, when nitrogen is injected from the intake / exhaust holes, the target gas is expelled from the intake / exhaust holes, while when nitrogen is extracted from the intake / exhaust holes, the target gas is fully injected into the hard case from the intake / exhaust holes. In this case, the two gases are separated by the soft partition and do not mix.

[0006]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. FIG. 1 is a vertical sectional view showing an embodiment of a gas filled container according to the present invention. In the figure, the cable 1 terminates inside the termination junction box 2. Then, in order to test the termination junction box 2, the termination junction box 2 is fixed on the case flange 6. Further, on the upper surface of the case flange 6, a hard case 4 which is not easily deformed like the one provided in the conventional apparatus is placed. The gas-tight container of the present invention is provided with a soft soft partition wall 8 formed of, for example, a rubber or vinyl film inside the hard case 4. The case flange 6 is provided with an intake / exhaust hole 7 that penetrates the case flange 6. A target gas for testing such as SF6 is injected or discharged through the intake / exhaust holes 7. On the other hand, an intake / exhaust hole 5 is also provided above the hard case 4. In the case of the container of the present invention, a gas for intake / exhaust operation such as nitrogen gas is injected or exhausted through the intake / exhaust pores 5.

The device of the present invention is used as follows. FIG. 2 shows a vertical cross-sectional view of the gas sealed container before the start of the test. In this figure, at this stage, pressurized nitrogen is supplied from the intake / exhaust holes 5 of the hard case 4, the soft partition wall 8 adheres to the upper surface of the case flange 6 and the outer peripheral surface of the terminal connection box 2, and the intake / exhaust holes 7 are closed. Has been. The terminal junction box 2 for the test is assembled with the soft partition wall 8 after the assembly, and the hard case 4 is further covered with the soft partition wall 8 to start the test preparation. That is, in order to place the terminal connection box 2 in the SF6 gas atmosphere, the nitrogen gas which is the intake / exhaust operation gas is sucked from the intake / exhaust hole 5 here. At the same time, a cylinder (not shown) filled with SF 6 gas is connected to the intake / exhaust hole 7. When the intake / exhaust operation gas is extracted from the intake / exhaust hole 5 in this manner, the soft partition wall 8 swells and subsequently spreads to the state shown in FIG. Then, when the intake / exhaust operation gas is finally sufficiently sucked, the soft partition wall 8 is brought into close contact with the inner surface of the hard case 4 as shown in FIG.

The state shown in FIG. 3 is the same as the state in which the case 4 of the conventional apparatus shown in FIG. 4 is filled with SF 6 gas. An electrical characteristic test of the termination junction box 2 is performed in the state as shown in FIG. Then, after this test is finished, the gas for intake / exhaust operation is again injected from the intake / exhaust hole 5. At this time, the intake / exhaust holes 7 of the case flange 6 are released and connected to, for example, a gas sealing container having the same configuration as that shown in this embodiment. Shrinks, and the state transitions to the state shown in FIG. 2 through the state shown in FIG. As a result, the SF6 gas is almost completely recovered in another container. Therefore, if the case 4 is then opened and the terminal junction box 2 is taken out, it is possible to prevent the wasteful discharge of SF6 gas into the atmosphere as in the conventional case.

Incidentally, in order to recover the SF 6 gas, a flexible container on a floating bag may be used in practice, and large-scale equipment is not required. In addition, since the intake and exhaust gases can be injected and exhausted relatively easily, the above operation can be realized with a very simple vacuum pump as a whole, and the SF6 gas used to fill this type of case can be It is possible to prevent the waste of being released into the atmosphere for tens of thousands of yen at a time. Also, the problem of injecting and recovering SF6 gas with expensive equipment of several million yen can be solved. The present invention is not limited to the above embodiments. In the above-mentioned embodiment, the case where the end of the cable is housed and the electrical test is performed is explained as an example, but the same expensive gas is injected and the container is frequently replaced. It is possible to adapt the present invention as well.

[0010]

[Effect of the device]

 The gas container of the present invention described above is provided with a soft soft partition wall inside a hard case that is not easily deformed, and a target gas intake / exhaust hole is provided in one of the partition walls so that the target gas can be injected. Since the intake / exhaust operation gas intake / exhaust holes are provided on the other side, it is easy to inject or exhaust the target gas into / from the case by injecting / exhausting the intake / exhaust operation gas. Become. Moreover, both gases are separated by the soft partition wall and do not mix with each other, and no complicated mechanism for injection and exhaust is required. As a result, it is possible to prevent the target gas from being unnecessarily released into the atmosphere when the expensive target gas is injected into the case or exhausted.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a gas filled container according to the present invention.

FIG. 2 is a vertical cross-sectional view at the start of use of the gas filled container according to the present invention.

FIG. 3 is a vertical cross-sectional view at the start of a test using the gas sealed container of the present invention.

FIG. 4 is a vertical cross-sectional view of a conventional gas filled container.

[Explanation of symbols]

 1 cable 2 cable end connection box 4 hard case 5 intake / exhaust hole 6 case flange 7 intake / exhaust hole 8 soft bulkhead

Claims (1)

[Scope of utility model registration request] 1. A hard case that does not easily deform, a soft soft partition wall provided inside the hard case to partition the interior of the hard case, and an outer wall of the hard case that penetrates the hard case to one side of the soft partition wall. A gas filling container, wherein an intake / exhaust hole for a target gas is provided, the intake / exhaust hole for the intake / exhaust gas is provided on the other side of the soft partition wall so as to penetrate the outer wall of the hard case.