JPH03552Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to an improvement of a vertical submersible motor pump for both land and land use.

[Conventional technology]

Conventionally, this type of device has been shown in Japanese Utility Model Application Laid-Open No. 58-49565, as shown in FIG.
In the figure, 1 is a frame having an opening 1a on the lower outer periphery, 2 is a stator, 3 is a can arranged on the inner periphery of the stator 2, and 4 and 5 are frame 1.
A ring-shaped upper end plate and a lower end plate are watertightly connected to both ends of the can and to both ends of the can, 6 is an upper bracket connected to the upper end plate 4, and 7 is a lower end plate 5.
The lower bracket is connected to the lower bracket and has a plurality of mounting feet 7a projecting from the radial outer periphery and downward.
8 is a pair of sleeve bearings fitted into the upper bracket 6 and the lower bracket 7, respectively; 9 is a rotor supported by the pair of sleeve bearings 8, and a pump (not shown) connected to the upper bracket 6; It is something that is driven. Reference numeral 10 indicates a well-known pressure regulator for regulating the pressure of the liquid sealed around the rotor 9. Reference numeral 11 indicates a cylindrical suction casing connected to the lower bracket 7, which surrounds the outer periphery of the frame 1 at intervals. and communicates with the suction port of the pump (not shown, the same applies hereinafter). 11a is a large number of suction holes formed below the suction casing 11, 11b is an opening formed opposite to the opening 1a of the frame 1, and 12 is an opening opposite to the opening 1a of the frame 1. 12a,
a mounting seat watertightly connected to the outer periphery of the frame 1;
Reference numeral 13 denotes a flange portion 1 that is watertightly connected to this mounting seat 13.
3a, said opening 1
Lead wire 2a of stator 2 passes through a and 12a.
and a cable 13 that passes through the opening 11b of the suction casing 11 and is bent at a substantially right angle outside the suction frame 11.
It has c. Reference numeral 14 indicates a plurality of bolts that connect the flange 13a and the mounting seat 12 in a watertight manner, and 15 indicates a bushing that seals between the opening 11b and the cable 13c.

In the structure configured as described above, when the pump is driven by the rotation of the rotor 9, outside water is introduced from the suction hole 11a of the suction casing 11, and the water is distributed between the inner periphery of the suction casing 11 and the outer periphery of the frame 1. The space between is sucked in from below to above,
Water is passed to the suction port of the pump.

By the way, this submersible motor pump is also used for land use, and in that case, the suction casing 11 is a suction pipe (not shown).
or a flange (not shown) is used. Therefore, in order to obtain stability during installation, a plurality of mounting legs 7a are formed that protrude in the radial direction from the suction casing 11. Further, when this is used as a submersible motor pump, the lower bracket 7 is used with the mounting leg 7a projecting more radially than the suction casing 11.

[The problem that the idea attempts to solve]

In the above-mentioned conventional vertical submersible motor pump for land use, the lower bracket 7 has mounting legs 7a that protrude more radially than the suction casing 11 in order to obtain stability during installation when used for land use. ing. However, when this pump is used as a submersible motor pump, it is generally installed relatively stably using piping such as a water pipe (not shown), so the mounting foot protrudes radially beyond the suction casing. There is no need to do this, and it becomes a completely wasteful configuration, which not only poses the problem of being uneconomical, but also, in recent wells where the well is configured like a pipe, the mounting foot is larger in the radial direction than the suction casing. Because of the protrusion, the pipe diameter of the tubular well had to be increased, which was also uneconomical.

This invention was made to solve this problem, and when using a land-use vertical submersible motor pump as a submersible motor pump, the diameter of the lower bracket can be made small, and it is possible to reduce not only the submersible motor pump itself but also the piping. The purpose of the present invention is to obtain a vertical submersible motor pump that can be used on land and is extremely economical and can greatly reduce the diameter of piping for wells.

[Means to solve the problem]

The land-use vertical submersible motor pump according to this invention includes a submersible motor main body coupled to the pump, a lower bracket coupled to the lower part of the submersible motor main body, and a lower bracket coupled to the lower bracket that extends around the outer periphery of the submersible motor main body. The lower bracket is provided with a plurality of mounting feet protruding downwardly on the inside of the suction casing in the radial direction, and on the outside of the mounting feet in the radial direction. A stamp cage is formed concentrically with the underwater motor main body, and an installation foot having a mounting portion projecting in the radial direction below the mounting foot is fitted into the stamp basket.

[Effect]

In this device, when used underwater, it is installed with a mounting foot formed radially inward of the suction casing, and when used on land, it is installed on a seal radially outside the mounting foot. By fitting the installation feet, it can be stably installed for land use.

〔Example〕

An embodiment of this invention will be described below with reference to FIG. 2. In the figure, 11c is a suction pipe formed in the suction casing 11, 11d is a flange attached to this suction pipe 11c, and 17 is a lower end plate that is watertightly connected to the frame 1 and can 3, and is fitted in the axial direction. 17a. 17b is a lower end view of the lower end plate, 18 is a lower bracket that is watertightly connected to the lower end plate 17 and also connected to the suction casing 11, facing the fitting hole 17a and extending from the fitting hole 17a. The fitting hole 18 is also formed to have a large diameter.
a, and a plurality of mounting legs 18b extending downward on the inside of the suction casing 11 in the radial direction. 18c is the lower end surface of the lower bracket 18;
Reference numeral 8d denotes a seal formed approximately concentrically with the suction casing 11 on the outside of the mounting foot 18b in the radial direction, and 19 denotes an internal connector fitted into the fitting hole 17a, which is connected to the lead wire 2a of the stator 2. It has a connecting pin 19a. Reference numeral 20 designates an external connector integrally molded with an insulating material, which incorporates a connecting terminal 20a that is detachably connected to the connecting pin 19a. Large diameter part 2 to be fitted
0c, and a cable lead-out part 20 that is orthogonal to the axial direction of this connection part 20d and leads out the cable 20e from between the mounting legs 18b close to the lower bracket 18.
f, a lid 20 that covers the end face of the cable lead-out portion 20f;
h. Note that the lid 20h is integrally molded with the cable lead-out portion 20f. Note that the insulating material is made of an elastic material. 22 is screwed onto the lower bracket 18,
A plurality of bolts 23 which bring the cable lead-out portion 20f into close contact with the lower end surface 18c of the lower bracket 18 through the lid 20h have an inner peripheral portion 23a fitted into the seal case 18d and protrude downward from the mounting foot 18b. This is an installation foot having an installation portion 23b that protrudes in the radial direction.

Next, a case where this device is used underwater will be explained with reference to FIG. In this configuration, the seal basket 18b is exposed and the device is placed in place by the mounting feet 18b of the lower bracket 18. In other words, the mounting foot 18b is placed in a state located radially inward from the suction casing 11.

In the device configured as described above, outside water introduced from the suction hole 11a of the suction casing 11 is sucked in by the pump 16, as in the conventional device. By the way, when assembling, the small diameter portion 20b of the external connector 20 is inserted into the fitting hole 17a.
Then, fit the large diameter portion 20c into the fitting hole 18a, and insert the bolt 22 into the lower bracket 1 through the lid 20h.
Screw it on to 7. As a result, the cable lead-out section 2
The bottom surface of 0f is the lower end surface 18c of the lower bracket 18
At the same time, the end surface of the large diameter portion 20c is brought into close contact with the side surface 17b of the lower end plate 17, resulting in double sealing.

By the way, when operated for land use,
As shown in FIG. 2, the seal 18 of the lower bracket 18
The inner circumferential portion 23a of the installation foot 23 is fitted into the portion d, and the installation foot 23 is connected to the lower bracket 18 with a bolt (not shown), and the installation portion 23b of the installation foot 23 protrudes in the radial direction. Therefore, even when a suction pipe (not shown) is connected to the flange 11d, it can be stably placed.

In addition, when operated for underwater use, the third
As shown in the figure, the installation foot 23 has been removed.
It is placed on the mounting feet 18b. Therefore, when used underwater, the mounting foot 18b is located radially inside the suction casing 11. In this way, the stamp basket 18d of the lower bracket 18 is provided radially outward from the mounting foot 18b, and by attaching and detaching the installation foot 23 to the stamp basket 18d, it can be used for underwater or land use.

[Effect of idea]

As described above, this invention includes a submersible motor body coupled to a pump, a lower bracket coupled to the lower part of the submersible motor body, and a lower bracket coupled to the lower bracket surrounding the outer periphery of the submersible motor body at intervals. A suction casing is provided, and the lower bracket is provided with a plurality of mounting feet protruding downward radially inward from the suction casing, and a plurality of mounting feet protruding downward from the suction casing, and concentric with the underwater motor body radially outward from the mounting feet. A shaped inko is formed, and an installation foot having an installation part that protrudes in the radial direction below the above-mentioned attachment foot is fitted to this inko, so when used for land use, this inko can be used. It is possible to attach installation feet with a large radial dimension to obtain a stable installation condition, and when used underwater, by removing these installation feet from the seal, the radial dimension of the lower bracket can be reduced. Not only the motor pump itself but also the piping dimensions of the tubular well can be reduced in size, which has an extremely economical effect.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a conventional device, FIG. 2 is a partial sectional view showing one embodiment of this invention, and FIG. 3 is a side view showing another embodiment of this invention. In the figure, 1 is a frame, 2 is a stator, 11 is a suction casing, 16 is a pump, 18 is a lower bracket, 18b is a mounting foot, 18d is a seal, and 23 is an installation foot. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] a submersible motor body coupled to the pump; a lower bracket coupled to the lower part of the submersible motor body;
A suction casing is coupled to the lower bracket and surrounds the outer periphery of the underwater motor main body at intervals, and the lower bracket has a plurality of mounting feet protruding downward from a radially inner side of the suction casing. In addition, an imprint concentric with the underwater motor body is formed radially outward from the mounting foot, and the imprint has an installation foot that protrudes in the radial direction below the installation foot and has an installation portion. A vertical submersible motor pump that can be used both on land and in combination.