Tank of electromagnetic equipment

Abstract

To provide a divisible tank for an electromagnetic device, in which the strength of the divided part is greater, and the amount of insulating oil that leaks from the inside in the event of an accident or the like can be reduced.SOLUTION: An electromagnetic equipment tank according to the present invention is divided into an upper tank 1, a lower tank 2, and an intermediate tank 3 located between the upper tank 1 and the lower tank 2, and the intermediate tank 3 includes two horizontally divided partial tanks 3a and 3b. The partial tanks 3a and 3b are joined together by an external connecting member 8, a reinforcing plate 7, and an internal connecting member 9. The external connecting member 8 is installed outside the intermediate tank 3, and is composed of a U-shaped member sandwiching the flange portions provided outside the partial tanks 3a and 3b. The reinforcing plate 7 is installed outside the intermediate tank 3 and is composed of a planar plate-like member. The internal connecting member 9 is installed inside the intermediate tank 3, and is composed of a U-shaped member that sandwiches the flange portions provided inside the partial tanks 3a and 3b.SELECTED DRAWING: Figure 1A

Description

Technical Field

[0001] The present invention relates to a tank of an electromagnetic device, and more particularly to a separable tank of an electromagnetic device.

Background Art

[0002] An electromagnetic device is a device including a winding, an iron core, an insulating medium (insulating oil), and a tank (housing) for accommodating them. Examples of electromagnetic devices can include transformers, motors, and generators.

[0003] Some electromagnetic devices such as transformers are large-sized for high voltage and large capacity. In order to install a large-sized transformer underground in the city center or in mountainous areas, due to restrictions on dimensions and weight during transportation, it is necessary to transport the assembled transformer after splitting it and reassemble it at the installation site.

[0004] Patent Document 1 describes an example of a split-transport transformer that can be transported after splitting. In the split-transport transformer described in Patent Document 1, a sealed container is divided into an upper tank, an intermediate tank, and a lower tank, and the intermediate tank is further divided into a plurality of units by cutting the middle of the side surface of the intermediate tank in the vertical direction. The intermediate tank is cut at the position where the bending stress generated on the side surface of the intermediate tank is minimized when the sealed container is evacuated.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] As described above, when transporting a large transformer, it is preferable that the tank of the transformer be divisible. The divisible tank needs to be able to withstand various load conditions that occur during the manufacturing, use, and accident of the transformer. For example, if an unexpectedly large internal pressure occurs in the tank in the event of an accident, a large amount of insulating oil may be released from the inside of the tank to the outside, which may lead to a fire.

[0007] An object of the present invention is to provide a divisible tank for an electromagnetic device, in which the strength of the divided part is greater and the amount of insulating oil leaking from the inside during an accident or the like can be reduced.

Means for Solving the Problems

[0008] The tank of the electromagnetic device according to the present invention is divisible into an upper tank, a lower tank located below the upper tank, and an intermediate tank located between the upper tank and the lower tank. The intermediate tank includes two partial tanks divided in the horizontal direction. The two partial tanks are joined to each other by an external connecting member, a reinforcing plate, and an internal connecting member. The external connecting member is installed outside the intermediate tank and is composed of a U-shaped member that sandwiches the flange portions provided outside the two partial tanks. The reinforcing plate is installed outside the intermediate tank and is composed of a planar plate-shaped member. The internal connecting member is installed inside the intermediate tank and is composed of a U-shaped member that sandwiches the flange portions provided inside the two partial tanks.

Effects of the Invention

[0009] According to the present invention, it is possible to provide a divisible tank for an electromagnetic device, in which the strength of the divided part is greater and the amount of insulating oil leaking from the inside during an accident or the like can be reduced.

Brief Description of the Drawings

[0010]

Figure 1A

Figure 1B

Figure 1C

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11A

Figure 11B

Mode for Carrying Out the Invention

[0011] The tank according to the present invention can be used for electromagnetic devices such as transformers, motors, and generators. Electromagnetic devices include a winding, an iron core, an insulating medium (insulating oil), and a tank (housing) for accommodating them, and are, for example, devices represented by transformers, motors, and generators. In the following examples, as an example, a transformer is shown as an electromagnetic device, and the tank used for the transformer will be described.

[0012] The tank according to the present invention includes an upper tank, an intermediate tank located below the upper tank, and a lower tank located below the intermediate tank, and the intermediate tank is horizontally divisible. The horizontally divided portions (partial tanks) of the intermediate tank are joined to each other by reinforcing members including an external connecting member, a reinforcing plate, and an internal connecting member. The external connecting member is a U-shaped member installed outside the intermediate tank and sandwiching the flange portion of the partial tank. The reinforcing plate is a plate-shaped member installed outside the intermediate tank. The internal connecting member is a U-shaped member installed inside the intermediate tank and sandwiching the flange portion of the partial tank.

[0013] In the tank according to the present invention, the reinforcing members can increase the strength of the divided portion (joint portion of the partial tanks) of the intermediate tank with weak strength. Therefore, even when a large internal pressure is generated in the tank during an accident or the like, it has sufficient strength to withstand the increase in pressure, can prevent the partial tanks from separating, and can reduce the amount of insulating oil leaking from the inside of the tank.

[0014] Hereinafter, the tank of the electromagnetic device according to the embodiment of the present invention will be described with reference to the drawings. In the drawings used in this specification, the same or corresponding components are denoted by the same reference numerals, and repeated descriptions of these components may be omitted.

Embodiment

[0015] The tank according to Embodiment 1 of the present invention will be described with reference to FIGS. 1A to 8. The tank according to this embodiment is a dividable tank of a transformer and can be divided and transported. The transformer includes a tank that is a housing, an insulating medium (for example, insulating oil) housed in the tank, and a core and windings installed inside the tank and immersed in the insulating oil.

[0016] Figure 1A is a perspective view of the tank 50 according to this embodiment. The tank 50 according to this embodiment has a shape with a long side and a short side in the horizontal direction. Hereinafter, the direction in which the long side of the tank 50 extends is referred to as the "length direction", and the direction in which the short side extends is referred to as the "width direction". That is, when viewed in the horizontal plane, the length in the width direction of the tank 50 is shorter than the length in the length direction.

[0017] The tank 50 according to this embodiment has a configuration that can be divided by three dividing parts 4, 5, and 6 shown by thick lines in FIG. 1A. The dividing part 4 is located at the upper part of the tank 50 and divides the tank 50 in the vertical direction (the vertical direction). The dividing part 6 is located at the lower part of the tank 50 and divides the tank 50 in the vertical direction. The dividing part 5 is located at the central part in the vertical direction of the tank 50 and divides the part between the dividing part 4 and the dividing part 6 of the tank 50 in the width direction.

[0018] The tank 50 according to this embodiment can be divided into three parts in the vertical direction by the dividing parts 4 and 6, and the central part in the vertical direction can be divided into two parts in the width direction by the dividing part 5. Specifically, the tank 50 according to this embodiment includes an upper tank 1, a lower tank 2, and an intermediate tank 3 that are divided by the dividing parts 4 and 6, and the intermediate tank 3 includes a first partial tank 3a and a second partial tank 3b that are divided by the dividing part 5.

[0019] FIG. 2 is a view showing the upper tank 1. The upper tank 1 is located at the upper part of the tank 50 and is a component divided from the tank 50 by the dividing part 4. A plurality of upper tank reinforcing beams 11 are installed on the upper part of the upper tank 1. The upper tank 1 has a shape with a plurality of bent portions (bent places).

[0020] FIG. 3 is a view showing the lower tank 2. The lower tank 2 is located below the upper tank 1, that is, at the lower part of the tank 50, and is a component divided from the tank 50 by the dividing part 6. A plurality of lower tank reinforcing beams 13 are installed on the lower part of the lower tank 2. The lower tank 2 has a shape with a plurality of bent portions.

[0021] As shown in FIG. 1A, the intermediate tank 3 is located between the upper tank 1 and the lower tank 2 and can be divided into a first partial tank 3a and a second partial tank 3b.

[0022] FIG. 4 is a view showing the first partial tank 3a. FIG. 5 is a view showing the second partial tank 3b. The first partial tank 3a and the second partial tank 3b are located at the vertical center of the tank 50 and are components divided from the tank 50 by dividing portions 4, 5, and 6. That is, the first partial tank 3a and the second partial tank 3b are components obtained by horizontally (in the width direction) dividing the intermediate tank 3 located between the upper tank 1 and the lower tank 2 by the dividing portion 5.

[0023] FIG. 1B is a view of the intermediate tank 3 divided by the dividing portion 4 as seen from above, and is a view of the joining position between the upper tank 1 and the intermediate tank 3 as seen from above. The intermediate tank 3 is divided into a first partial tank 3a and a second partial tank 3b by the dividing portion 5. The first partial tank 3a and the second partial tank 3b are provided with flange portions (protrusions), and are joined to each other by bolts 10 passing through these flange portions. The bolts 10 are positioning bolts for aligning the positions of the first partial tank 3a and the second partial tank 3b when joining the divided first partial tank 3a and second partial tank 3b to each other.

[0024] The first partial tank 3a and the second partial tank 3b are joined to each other by welding, and further, as shown in FIGS. 1A and 1B, they are joined to each other by an external connection member 8, a reinforcing plate 7, and an internal connection member 9. The external connection member 8 and the reinforcing plate 7 are installed outside the tank 50, and the internal connection member 9 is installed inside the tank 50, and each joins the first partial tank 3a and the second partial tank 3b.

[0025] FIG. 6 is an enlarged view of a portion A (the joining portion between the first partial tank 3a and the second partial tank 3b) in FIG. 1A, and is a view showing the external connection member 8 and the reinforcing plate 7 that join the first partial tank 3a and the second partial tank 3b to each other. That is, FIG. 6 is a view of the joining portion between the first partial tank 3a and the second partial tank 3b as seen from outside the tank 50. FIG. 6 also shows the dividing portion 5.

[0026] FIG. 7 is a cross-sectional view taken along the B side of FIG. 1A, and shows an internal connecting member 9 that joins the first partial tank 3a and the second partial tank 3b to each other. FIG. 7 is a view of the joint between the first partial tank 3a and the second partial tank 3b as seen from inside the tank 50.

[0027] In the intermediate tank 3, the joint between the first partial tank 3a and the second partial tank 3b is a weak point in terms of strength against the internal pressure of the tank 50. Therefore, in the tank 50 according to the present embodiment, the joint between the first partial tank 3a and the second partial tank 3b is provided with reinforcing members such as an external connecting member 8, a reinforcing plate 7, and an internal connecting member 9. The external connecting member 8 and the reinforcing plate 7 are installed outside the intermediate tank 3 and join the first partial tank 3a and the second partial tank 3b to each other. The internal connecting member 9 is installed inside the intermediate tank 3 and joins the first partial tank 3a and the second partial tank 3b to each other.

[0028] The external connecting member 8 can be composed of a U-shaped (or C-shaped) plate-like member, and is preferably made of metal such as a steel plate. The first partial tank 3a and the second partial tank 3b are provided with a flange portion (protruding portion) on the outside, and this flange portion serves as a joint surface and joins them to each other. The external connecting member 8 is composed of a U-shaped member that sandwiches the flange portions of the first partial tank 3a and the second partial tank 3b. That is, the external connecting member 8 is provided outside the first partial tank 3a and the second partial tank 3b so as to sandwich the flange portions of the first partial tank 3a and the second partial tank 3b in the width direction with the U-shaped portion.

[0029] The reinforcing plate 7 can be composed of a planar plate-like member, and is preferably made of metal such as a steel plate. The reinforcing plate 7 can be provided at any position of the first partial tank 3a and the second partial tank 3b. For example, when the intermediate tank 3 is provided with a reinforcing member on the outside, it can be installed on this reinforcing member.

[0030] FIG. 1C is, similarly to FIG. 1B, a view of the intermediate tank 3 divided by the dividing portion 4 as seen from above. In FIG. 1C, each of the first partial tank 3a and the second partial tank 3b is provided with protruding portions 3a1, 3b1 protruding to the outside, and the reinforcing plate 7 is shown having a plurality of protruding portions 7a, 7b respectively contacting the protruding portions 3a1, 3b1. The protruding portions 7a, 7b protrude from the reinforcing plate 7 toward the inside of the intermediate tank 3. Note that in FIG. 1C, as an example, a configuration in which the reinforcing plate 7 has two protruding portions 7a, 7b is shown.

[0031] The first partial tank 3a and the second partial tank 3b can be provided with protruding portions 3a1, 3b1 protruding to the outside. When the first partial tank 3a and the second partial tank 3b are provided with such protruding portions 3a1, 3b1, the reinforcing plate 7 can be provided with protruding portions 7a, 7b respectively contacting the protruding portion 3a1 of the first partial tank 3a and the protruding portion 3b1 of the second partial tank 3b from the outside in the width direction. The reinforcing plate 7 can more reliably prevent the first partial tank 3a and the second partial tank 3b from separating in the width direction by such a plurality of protruding portions 7a, 7b.

[0032] One or a plurality of the external connecting members 8 and the reinforcing plate 7 can be installed in the vertical direction. The external connecting member 8 is fixed to the first partial tank 3a and the second partial tank 3b, for example, by welding. The reinforcing plate 7 is fixed to the first partial tank 3a and the second partial tank 3b, for example, by bolts.

[0033] FIG. 8 is a view showing the internal connecting member 9. FIG. 8 shows a front view and a plan view (top view) of the internal connecting member 9.

[0034] The internal connecting member 9 can be composed of a U-shaped (or C-shaped) plate member, and is preferably made of metal such as a steel plate. The first partial tank 3a and the second partial tank 3b have flanges (protruding portions) inside, and these flanges serve as joint surfaces and are joined to each other. The internal connecting member 9 is composed of a U-shaped member that sandwiches the flanges of the first partial tank 3a and the second partial tank 3b. That is, the internal connecting member 9 is provided inside the first partial tank 3a and the second partial tank 3b so as to sandwich the flanges of the first partial tank 3a and the second partial tank 3b in the width direction with the U-shaped portion.

[0035] The internal connecting member 9 is preferably provided continuously in the vertical direction from the upper part to the lower part of the joint between the first partial tank 3a and the second partial tank 3b. One or a plurality of internal connecting members 9 can be installed in the vertical direction. The internal connecting member 9 is fixed to the first partial tank 3a and the second partial tank 3b with bolts, for example.

[0036] Note that the intermediate tank 3 (the first partial tank 3a and the second partial tank 3b) is joined to the upper tank 1 and the lower tank 2 by welding. If an external connecting member 8 is installed at the joint between the intermediate tank 3 and the upper tank 1 or at the joint between the intermediate tank 3 and the lower tank 2, it is possible to more effectively prevent the upper tank 1, the intermediate tank 3, and the lower tank 2 from separating from each other in the vertical direction.

[0037] When a large stress acts inside the separable tank 50, it is more likely to separate in the horizontal direction (the width direction in this embodiment) than in the vertical direction. For this reason, it is preferable to install a reinforcing member at least at the joint between the first partial tank 3a and the second partial tank 3b (the joint in the width direction, that is, the dividing portion 5).

[0038] The tank 50 according to this embodiment includes reinforcing members such as an external connecting member 8, a reinforcing plate 7, and an internal connecting member 9 at the joint between the first partial tank 3a and the second partial tank 3b. Therefore, the strength at the dividing portion 5 is high. For example, even when a vacuum is applied to enclose insulating oil in the tank 50 or when a large internal pressure is generated in the tank 50 during an accident, it has sufficient strength to withstand the increase in pressure. For this reason, the tank 50 according to this embodiment can reduce the amount of insulating oil leaking from the inside, for example, during an accident, and can reduce the risk of fire and the like.

Embodiment

[0039] The tank 50 according to Embodiment 2 of the present invention will be described with reference to FIGS. 9 to 11B. Hereinafter, the differences between the tank 50 according to this embodiment and the tank 50 according to Embodiment 1 will be mainly described. In the tank 50 according to Embodiment 1, the intermediate tank 3 includes a first partial tank 3a and a second partial tank 3b that are divided in the horizontal direction (width direction) by a dividing portion 5. That is, the intermediate tank 3 of the tank 50 according to Embodiment 1 is not divided in the length direction.

[0040] FIG. 9 is a perspective view of the tank 50 according to this embodiment. FIG. 10 is a view of the tank 50 according to this embodiment as seen from above. In the tank 50 according to this embodiment, the intermediate tank 3 is divided into two not only in the width direction but also in the length direction.

[0041] The tank 50 according to this embodiment has a configuration that can be divided by four dividing portions 4, 5, 6, and 17 shown by thick lines in FIG. 9. The intermediate tank 3 can be divided in two horizontal directions, that is, the width direction and the length direction, by the dividing portions 5 and 17, and includes a third partial tank 3c, a fourth partial tank 3d, a fifth partial tank 3e, and a sixth partial tank 3f, which are four components. The dividing portion 17 is located at the central portion in the vertical direction of the tank 50 and divides the portion between the dividing portion 4 and the dividing portion 6 of the tank 50 in the length direction.

[0042] As shown in FIG. 10, in the tank 50 according to this embodiment, the first partial tank 3a in Embodiment 1 is divided by the dividing portion 17 into a third partial tank 3c and a sixth partial tank 3f, and the second partial tank 3b in Embodiment 1 is divided by the dividing portion 17 into a fourth partial tank 3d and a fifth partial tank 3e.

[0043] The tank 50 according to this embodiment is provided with reinforcing members such as an external connection member 8, a reinforcing plate 7, and an internal connection member 9 at the joint between the third partial tank 3c and the fourth partial tank 3d, the joint between the fourth partial tank 3d and the fifth partial tank 3e, the joint between the fifth partial tank 3e and the sixth partial tank 3f, and the joint between the sixth partial tank 3f and the third partial tank 3c.

[0044] FIG. 11A is an enlarged view of part C (the joint between the fourth partial tank 3d and the fifth partial tank 3e) of FIG. 10, and is a view of the intermediate tank 3 (the second partial tank 3b in Embodiment 1) divided by the dividing portion 17 as seen from above. The fourth partial tank 3d and the fifth partial tank 3e are joined to each other by welding with bolts 10 passing through the flange portions, as in the first partial tank 3a and the second partial tank 3b (FIG. 1B) in Embodiment 1, and are further joined to each other by the external connection member 8, the reinforcing plate 7, and the internal connection member 9.

[0045] FIG. 11B is, similarly to FIG. 11A, an enlarged view of part C of FIG. 10, and is a view of the intermediate tank 3 divided by the dividing portion 17 as seen from above. FIG. 11B shows a configuration in which each of the fourth partial tank 3d and the fifth partial tank 3e is provided with protruding portions 3d1, 3e1 protruding to the outside, and the reinforcing plate 7 is provided with a plurality of protruding portions 7a, 7b that respectively contact the protruding portions 3d1, 3e1. Note that, as an example, FIG. 11B shows a configuration in which the reinforcing plate 7 is provided with two protruding portions 7a, 7b.

[0046] The fourth partial tank 3d and the fifth partial tank 3e can be provided with protrusions 3d1, 3e1 protruding externally. When the fourth partial tank 3d and the fifth partial tank 3e are provided with such protrusions 3d1, 3e1, the reinforcing plate 7 can be provided with protrusions 7a, 7b that contact the protrusion 3d1 of the fourth partial tank 3d and the protrusion 3e1 of the fifth partial tank 3e respectively from the outer side in the longitudinal direction. The reinforcing plate 7 can more reliably prevent the fourth partial tank 3d and the fifth partial tank 3e from separating in the longitudinal direction by such a plurality of protrusions 7a, 7b.

[0047] The longitudinal division part 17 of the intermediate tank 3 is the part where the deformation is the largest when a large internal pressure is generated in the tank 50 during an accident, and it is a structural weak part. The tank 50 according to this embodiment is provided with reinforcing members such as an external connection member 8, a reinforcing plate 7, and an internal connection member 9 at the division part 17 (the longitudinal joint part of the intermediate tank 3), so the strength at the division part 17 is large. For example, the amount of insulating oil leaking from the inside during an accident can be reduced, and risks such as fire can be decreased.

[0048] A configuration in which the intermediate tank 3 is divided in the longitudinal direction like the tank 50 according to this embodiment can be adopted when the intermediate tank 3 cannot be loaded on a trailer used for transportation because the intermediate tank 3 is long in the longitudinal direction, or when it is difficult to carry out the installation work of the tank 50. When the intermediate tank 3 is divided in the longitudinal direction, the length of the intermediate tank 3 can be shortened during transportation or installation, and the transportation and installation work can be easily carried out.

[0049] Note that the intermediate tank 3 is divided into two in the longitudinal direction in this embodiment, but it may be divided into three or more in the longitudinal direction. Even if the intermediate tank 3 is divided into three or more in the longitudinal direction, it can be provided with reinforcing members such as an external connection member 8, a reinforcing plate 7, and an internal connection member 9 at the division part to increase the strength at the division part.

Example

[0050] The tank 50 according to Embodiment 3 of the present invention will be described with reference to FIGS. 1A to 3. In the tank 50 according to this embodiment, the lower tank 2 (FIG. 3) has more reinforcing beams and a shape with more bent portions than the upper tank 1 (FIG. 2). The bent portions are the parts where stress concentrates.

[0051] The number of lower tank reinforcing beams 13 provided in the lower tank 2 is larger than the number of upper tank reinforcing beams 11 provided in the upper tank 1. And the lower tank 2 has a shape with a larger number of bent portions than the upper tank 1, and can disperse the applied stress.

[0052] In the tank 50 according to this embodiment, since the lower tank 2 has more reinforcing beams and bent portions than the upper tank 1, it has a shape with greater strength against internal pressure and is stronger than the upper tank 1 and can withstand the pressure of insulating oil. Therefore, for example, when a large internal pressure occurs in the tank 50 during an accident, the joint between the upper tank 1 and the intermediate tank 3 separates earlier than the joint between the lower tank 2 and the intermediate tank 3 in the tank 50, and the amount of insulating oil leaking from the separation part can be made less, and the risk of a fire or the like can be reduced.

[0053] Note that the present invention is not limited to the above embodiments, and various modifications are possible. For example, the above embodiments have been described in detail for easy understanding of the present invention, and the present invention is not necessarily limited to the aspect having all the configurations described. Also, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment. Also, the configuration of another embodiment can be added to the configuration of one embodiment. Also, for a part of the configuration of each embodiment, it is possible to delete it, or add or replace other configurations.

Explanation of Reference Numerals

[0054] 1…Upper tank, 2…Lower tank, 3…Intermediate tank, 3a…First partial tank, 3b…Second partial tank, 3c…Third partial tank, 3d…Fourth partial tank, 3e…Fifth partial tank, 3f…Sixth partial tank, 4, 5, 6…Partition, 7…Reinforcing plate, 8…External connecting member, 9…Internal connecting member, 10…Bolt, 11…Upper tank reinforcing beam, 13…Lower tank reinforcing beam, 17…Partition, 50…Tank.

Claims

1. an upper tank, a lower tank positioned below the upper tank, and an intermediate tank positioned between the upper tank and the lower tank, which can be divided into, the intermediate tank includes two partial tanks divided horizontally, the two partial tanks are joined to each other by an external connecting member, a reinforcing plate, and an internal connecting member, the external connecting member is installed outside the intermediate tank and is composed of a U-shaped member that sandwiches the flange portions provided outside the two partial tanks, the reinforcing plate is installed outside the intermediate tank and is composed of a flat plate-shaped member, the internal connecting member is installed inside the intermediate tank and is composed of a U-shaped member that sandwiches the flange portions provided inside the two partial tanks, the lower tank has more beams than the upper tank and has a shape with more bent portions than the upper tank, A tank for an electromagnetic device, characterized in that.

2. the intermediate tank has a length in the width direction shorter than the length in the length direction and includes two partial tanks divided in the width direction, the partial tanks divided in the width direction are joined to each other by the external connecting member, the reinforcing plate, and the internal connecting member, The tank for an electromagnetic device according to Claim 1.

3. each of the partial tanks divided in the width direction of the intermediate tank is divided into at least two partial tanks in the length direction, the partial tanks divided in the length direction are joined to each other by the external connecting member, the reinforcing plate, and the internal connecting member, The tank for an electromagnetic device according to Claim 2.

4. each of the partial tanks divided in the width direction has a protrusion protruding outside, the reinforcing plate includes a plurality of protrusions that contact the protrusions of the partial tank from the outside in the width direction, The tank for an electromagnetic device according to Claim 2.

5. each of the partial tanks divided in the length direction has a protrusion protruding outside, the reinforcing plate that joins the partial tanks divided in the length direction includes a plurality of protrusions that contact the protrusions of the partial tanks divided in the length direction from the outside in the length direction, The tank for an electromagnetic device according to Claim 3.

6. the two partial tanks divided horizontally are joined to each other by bolts, The tank for an electromagnetic device according to Claim 1.

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