JPS5814704Y2 - Annular flow path type linear induction electromagnetic pump - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an inductive annular channel type linear induction electromagnetic pump applied to transport conductive liquids such as liquid metals, such as sodium.

Generally, this type of pump has a plurality of comb-shaped laminated iron cores 3, 3, etc. arranged radially around the outer periphery of a circular duct 1, with a heat insulating material 2 interposed therebetween, as shown in Fig. 1. , slots 4, 4... of the comb-shaped laminated cores 3, 3...
Induction coils 5, 5, . . . are fitted in the portions, and a plurality of spacers 6, 6, .
The annular flow path 8 is constructed by supporting the internal iron core 7 and arranging the internal iron core 7 therein.

When this type of pump is driven, a current is passed through the induction coil 5 so as to generate a moving magnetic field in the axial direction of the circular duct 1, thereby causing a moving magnetic field in the conductive liquid in the annular flow path 8. This is based on the principle that an induced current is generated in the conductive liquid when the current is cut, and the interaction between the induced current and the magnetic field causes an electromagnetic force to move in the same direction as the magnetic field, thereby transporting the conductive liquid. It is.

In order to prevent vibrations from occurring during operation of the pump, the comb-shaped laminated core 3 needs to be supported sufficiently firmly and accurately around the circular duct 1.
As mentioned above, the comb-shaped laminated iron core 3 is installed radially around the circular duct 1, so it is difficult to assemble it firmly compared to other electromagnetic pumps. The connection of the crossover wires of the induction coils fitted into the respective slots 4 of the comb-shaped laminated core made assembly of the comb-shaped laminated core even more difficult.

Therefore, as a result of studies in view of the above-mentioned conventional circumstances, the present invention was developed as a ring-shaped linear linear structure that can be assembled and supported without hindering the cooling action of the comb-shaped laminated core and induction coil. This is an induction electromagnetic pump.

The drawings showing embodiments of the present invention will be described below.

For convenience of explanation, the same reference numerals as in the above-mentioned conventional example are used in the drawings.

In FIGS. 2 and 3, the comb-shaped laminated core 3 is formed with a plurality of slots 4, 4, . ing.

The rib 9 clamps and fixes the proximal side wall 3' of the comb-shaped laminated core 3 along the longitudinal direction between a pair of plate-like members 10.10, and the ribs 9 are formed by sandwiching and fixing the proximal side wall 3' of the comb-shaped laminated core 3 between a pair of plate-like members 10.10, and It is formed by a bent piece bent parallel to the plate member 10.
．． 10 is a screw 11° 11 on the comb-shaped laminated core 3.
It is fixed with a stopper, etc.

Depending on the size and weight of the pump, the ribs 9 are provided symmetrically in the thickness direction of the comb-shaped laminated core 3 and provided two on each side or one on each side.

When two ribs 9 are provided on each side, as shown in FIG. 2, two plate members 10 each having ribs 9 as described above are provided on both sides of the comb-shaped laminated core 3, and screws 11 are provided on both sides of the comb-shaped laminated core 3. ...It is provided by Q-fixing with a stop or the like.

When the ribs 9 are provided only on one side, as shown in FIG. They are arranged on both sides of the comb-shaped laminated iron core 3 and fixed to the comb-shaped laminated core 3 by upper screws 11 as described above.

Further, each rib 9 is provided with a screw attachment hole 13 in advance.

A plurality of induction coils 5 are disposed on the outer periphery of the duct 1, which is a circular tube with an internal iron core 7 supported by a plurality of spacers and an annular flow path 8 disposed at its axis, with a heat insulating material 2 in between.・
. . . is fitted into each slot 4 . . . ・The comb-shaped laminated core 3 . do.

After arranging a plurality of comb-shaped laminated iron cores 3 in a radial manner in this way, each comb-shaped laminated iron core 3 is placed in a ceramic state.
, 3, . . . are relatively connected by screws 14, etc., and the comb-shaped laminated cores 3, 3, .

By the way, in the embodiment shown in FIG. 5, each comb-shaped laminated core 3.
...Using rib mounting flat plates 15 and 15 arranged at the inlet and outlet sides of the pump duct at both ends in the length direction, these are fixed with screws 14 to attach the comb-shaped laminated iron cores 3, 3.
... are fixed radially, but each of the above ribs 9 and
. . . are provided in advance to a length corresponding to the arrangement interval of each comb-shaped laminated core 3 .・Each rib 9...
may be displaced by the plate thickness of the rib 9 in the length direction of the iron core 3 and overlapped with each other, and the ribs 9, 9 may be relatively fixed to each other by screws. In this case, ribs 9, 9 are provided on both sides as shown in FIG.

Furthermore, when the rib mounting flat plate 15 is used, it goes without saying that it may have ribs on one side or ribs on both sides.

The rib mounting flat plate 15.15 is formed into an annular shape with a circular cutout in the center, so that it can be installed coaxially with the circular duct 1.

The length of the rib 9 and the position of the screw holes (not shown) of the annular rib mounting flat plate 15 and 15 are determined in advance and the distance between each comb-shaped laminated core 3, 3... The screws 14 are integrally installed as described above.
By stopping a plurality of comb-shaped laminated cores 3, 3...
... can be assembled radially with high precision.

As explained above, the present invention includes a circular pipe duct 1 in which an annular flow path 8 is formed by supporting an internal iron core 7 on the axis with a spacer 6, and a circular pipe 1 in which an annular flow path 8 is formed by supporting an internal iron core 7 at its axis, and A plurality of arranged comb-shaped laminated cores 3, 3...
and slots 4 of the comb-shaped laminated cores 3, 3...
In an annular flow path type linear induction electromagnetic pump configured with an induction coil 5 fitted in a section, the proximal side wall 3' of the comb-shaped laminated core 3 is extended along the longitudinal direction by a set of plate-shaped members. 10. At the same time as clamping and fixing in step 10, the plate-like member 1
At least one of the iron cores 0 is provided with ribs 9, 9 that vertically protrude from both ends in the longitudinal direction of the iron core 3, and the ribs 9, 9 are fixed relative to each other in a ceramic state to form a comb-shaped laminated iron core. 3 are radially integrated, so the comb-shaped laminated core 3
The proximal end side wall 3' of is clamped and fixed by the plate-like members 10 and 10 of the set (■), and the ribs 9 provided on the plate-like members 10 allow
Since the comb-shaped laminated core 3 can be fixed together or fixed to the rib mounting plate 15, the core 3 can be easily installed, and the plate member 10 fixed to the comb-shaped laminated core 3 can be easily attached. , a rib mounting plate 15.1 that connects each rib.
5 serves as a reinforcing material and can be firmly assembled and supported, thus making it possible to eliminate vibrations that occur when the pump is driven.

In addition, since each rib 9 . . . need only be fixed in sequence with the screws 14, the comb-shaped laminated core 3 . . . can be easily assembled and disassembled easily. can.

Furthermore, since each comb-shaped laminated core 3 is connected at both end portions in the longitudinal direction as described above, the induction coil 5 is connected as described above.
... can be assembled without being hindered by the connection of crossover wires, and the interval between each comb-shaped laminated core 3, 3 can be maintained in an open state, and the induction coil 5 ... is not covered. The cooling effect of the induction coil 5 is not hindered.

[Brief Description of the Drawings] Fig. 1 is a vertical perspective view showing a conventional example of an annular passage type linear induction electromagnetic pump, and Fig. 2 is a comb-shaped laminated iron core in an annular passage type linear induction electromagnetic pump according to the present invention. FIG. 3 is a perspective view showing another embodiment of the comb-shaped laminated core in the same pump, and FIG. 4 shows the state in which the comb-shaped laminated core in the same pump is attached around a circular duct. FIG. 5 is a perspective view of the same pump. 1...Circular duct, 2...Insulation material,
3... Comb-shaped laminated core, 3'... Base end side wall, 4... Slot, 5... Induction coil, 6...・Spacer, 7... Internal iron core, 8... Annular flow path, 9... Rib, 1
0... Plate member, 11.14... Screw, 15... Rib mounting flat plate.

Claims (2)

[Scope of utility model registration request] (1) A circular duct in which an internal iron core is supported at the axis by a spacer to form an annular flow path, and a plurality of comb-shaped laminated iron cores are arranged radially around the outer periphery of the duct with a heat insulating material interposed therebetween; In the annular flow path type linear induction electromagnetic pump configured with an induction coil fitted in a slot portion of the comb-shaped laminated core, a set of coils are arranged along the longitudinal direction of the proximal side wall of the comb-shaped laminated core. They are clamped and fixed by plate-like members, and at least one of the plate-like members is provided with ribs that vertically protrude from both ends in the longitudinal direction of the iron core, and the ribs are placed next to each other and relatively arranged. An annular flow path type linear induction electromagnetic pump with a fixed comb-shaped laminated iron core radially integrated. (2) The annular channel type linear according to claim 1, wherein each rib is fixed with screws to an annular rib mounting plate arranged at both ends in the longitudinal direction of the comb-shaped laminated core. Induction electromagnetic pump.