1. A water pump which can give consideration to both diving and self-suction,

the method is characterized in that the method can respectively perform two using methods related to all directions in the same water pump:

the use method of the diving: if the pump is to be placed below the water surface for use, the interior of the liquid pump is inflated through the inflating nozzle mechanism (P), the pressure gauge communicated with the interface (K) of the pressure display device is used for observing, and when the inflating pressure is greater than the water pressure of the depth into which the water pump is to be submerged, the pump can be placed below the water surface and electrified to start the pump;

secondly, using method on land: if the pump is to be placed above the water surface for use, the pump can be started to work after being electrified;

the water pump does not have the possibility that the liquid molecules can leak out of the water pump by the external liquid inside the water pump.

2. The motor structure adopted by the water pump which can realize both diving and self-suction functions according to the claim 1,

the method is characterized in that:

firstly, at least the rotor (2) is surrounded by a narrow metal seal separator (4) in a three-dimensional manner, or at least the rotor (2) and the stator (1) are surrounded by a wide metal seal separator (5) in a three-dimensional manner, and a motor shaft seal (7) and a charging nozzle mechanism (P) and a pressure display device interface (K) which are connected (12) through a charging pipe are arranged at the bottom of the narrow metal seal separator (4) or the wide metal seal separator (5);

all splicing gaps related to the narrow metal seal isolation (4) or the wide metal seal isolation (5) and the metal seal structure (10) are connected through a non-detachable welding process.

At least the periphery and the bottom of the liquid pump (9) are surrounded by a metal sealing structure (10) which is connected by a non-detachable welding process in a three-dimensional manner, and the liquid pump (9) is provided with a liquid inlet pipe interface (11) and a liquid outlet pipe interface (8);

the metal sealing structure (10) and the narrow metal sealing isolation (4) or the wide metal sealing isolation (5) respectively form metal sealing isolation cavities, and the metal sealing isolation cavities are connected through a welding process of a non-detachable welding ring part (D).

3. The motor structure adopted by the water pump which can realize both diving and self-suction functions according to the claim 1,

the method is characterized in that:

the part of the rotor (2) surrounded by the narrow metal seal isolation (4) in a three-dimensional manner is made of thin non-magnetic-conductive materials, and part of the narrow metal seal isolation (4) is in a detachable tight fit state with the circumferential part of the inner ring of the stator (1).

Background

At present, submersible pumps of various specifications and models are diversified, and are power equipment with quite wide and mature purposes, and the shortcomings are that: the submersible pump in the prior art is mainly used for resisting the infiltration of external water bodies into the submersible pump dragging motor by virtue of a sealing structure of the submersible pump under water. The sealing rings of various specifications mainly made of polymer soft materials and the smooth metal surface with roughness are compacted to serve as the sealing rings, so-called 'sealing' in the prior art can only be regarded as a 'semi-sealing' measure which can absolutely not prevent the passing of common air molecules and water molecules, otherwise, the automobile tire and the bicycle tire can never be inflated.

Therefore, when people use the submersible pump to work, the general maintenance interval time is not too long (less ten days or more months and more difficult to exceed one year), and the maintenance interval time of the submersible pump is shorter when the submersible pump is deeper than the diving depth), and the submersible pump has to be periodically lifted out of the water for maintenance (not damage maintenance) as long as the submersible pump is used, so that the seepage water which enters the motor of the submersible pump can be manually and timely cleared away, and the motor rotor is prevented from touching the ever-increasing seepage water to cause the damage of the whole motor. The small submersible pump can be maintained and dewatered ashore repeatedly for many times, the medium-sized or even large submersible pump is troublesome to maintain and dewater ashore from water frequently, and the deeper the diving, the shorter or more frequent the maintenance period of 'ashore dewatering' is.

Disclosure of Invention

The purpose of the invention is as follows:

the waterproof sealing ring joint of the submersible pump and the like with the highest requirements in the water pump technology starts with, namely, the air jacking sealing principle is utilized to replace all static sealing structures and sealing elements which need to be matched in the prior art, and meanwhile, the structure processing problem that conveyed liquid molecules in the water pump cannot leak outwards is solved.

The key points of the invention are as follows:

the above-mentioned purpose is achieved by starting with a principle of waterproof sealing (using air jacking principle) which is structurally proposed to be able to achieve, and by subverting the overall structure of the prior art.

The invention has the characteristics that:

firstly, the invention can ensure that the submersible pump working in the self-set diving depth can resist the infiltration of external water with certain external pressure or great external pressure in a manner of jacking the internal gas with the required pressure by inflating the internal gas of the simplest manual inflator or pressurizing a compressor, thereby establishing the condition that the invention can be suitable for the submersible pump working in any diving depth.

Secondly, because the metal seal isolation cavity formed by the narrow metal seal isolation or the wide metal seal isolation of the motor in the structure of the invention is connected with the metal seal structure of the liquid pump part which is used as the lower part of the invention by the welding process of the non-detachable welding ring part, the invention creates conditions for preventing liquid molecules in the liquid pump part from leaking out when the invention works. The high requirements of engineering that it is impossible to leak out the molecules of the liquid being transported, if some valuable or extremely toxic liquid is pumped, are likely to be prerequisites for its adoption.

Thirdly, because the whole structure of the 'fully-sealed' cavity in the motor of the invention is formed, all parts allowing the fluid molecules to pass through are arranged at the bottom of the metal sealed isolation cavity (for example, the position of the 'shaft seal position' of the motor and the position of the 'inlet' connected with the air charging mechanism pipe), however, the position above any gap that can be traversed by the fluid molecules ("exit") is not present, namely, a fluid molecular channel from bottom to top cannot be formed in the range of a fully-sealed cavity of the motor, therefore, the invention can exist the gas jacking condition from top to bottom in the 'totally-sealed' metal sealed isolation cavity, the external high-pressure liquid with the specific gravity larger than that of the gas can not pass through the motor shaft seal position from bottom to top to enter the motor full-sealed isolation cavity of the invention absolutely, thereby creating conditions.

The fatal defect of the prior art is that: external high-pressure water can pressurize gas in the water pump through the shaft seal position of the motor with the lowest position, and the gas extruded by external water seepage in the pump slowly passes through a plurality of sealed three-dimensional defense lines (gas molecules cannot be prevented from passing through the outside of the whole machine through the sealing ring elements to be leaked to the outside) formed by sealing elements made of soft polymer sealing materials embedded in special smooth gap structures, and when the external water is accumulated and gradually replaces the space originally occupied by the extruded gas, the external water is finally contacted with a motor rotor and is damaged.

Because the sealing element entity and the matched structure in the conventional sense in the prior art are not adopted in the invention, the gas jacking sealing is implemented only by utilizing the gas jacking principle without the sealing element entity, the overall structure of the invention inevitably causes the reform or simplification of the overall structure of the prior submersible pump, however, the waterproof sealing performance of the invention is far superior to that of the prior art (the absolute sealing degree is reached), therefore, the 'cost performance' of the invention is inevitably far higher than that of the prior art, and the invention creates conditions for the invention to become at least the replacement product of the prior submersible pump. At the same time, the invention is also applicable to the most common water pump structures used above water.

And fifthly, because the submersible pump can be submerged into any underwater depth position required by engineering, and the duration under water (including the working time and the non-working time) can reach infinity (the period does not need to be regularly landed for maintenance for removing seepage water), the submersible pump can be made into a required extremely-powerful model (for example, power of millions of kilowatts) according to the requirement or the manufacturing capacity, and conditions are created for efficiently and directly pumping the exploited submarine oil under a deep sea stratum or efficiently exploiting abundant 'combustible ice' on the earth under water (a method for realizing large-scale exploitation which can enter a practical stage and is used for commercial purposes is not solved at present). The service life of the submersible pump under water at one time can be completely determined by the service life of the dragging motor (the world brand motor can reach 30 years-if the best material is adopted for manufacturing the submersible pump, the service life can reach nearly 50 years or more).

The fatal defect of the prior art is that: because the sealing ring structure made of soft high polymer materials is adopted for waterproof sealing, the damage of a motor caused by the fact that external water bodies permeate into the existing submersible pump cannot be prevented, the deeper the submersible pump is submerged, the shorter the maintenance period for removing water seepage on the shore regularly is, and if the submersible pump with extremely high power is made, the regular maintenance is difficult to be carried out on the shore for removing the water seepage regularly.

Drawings

Figure 1 illustrates a first constructive embodiment of the present invention, in which the stator of the electric machine is removable and provided with a narrow metallic hermetic insulating shield.

Figure 2 illustrates a second constructive embodiment of the present invention for the non-removable motor stator and provided with a wide metal-tight insulating shield.

1: a motor stator embedded in the winding; 2: a motor rotor; 3: a motor bearing; 4: narrow metal seal isolation shielding; 5: wide isolation shielding; 6: a motor shaft; 7: a motor shaft seal or a position for arranging the shaft seal; 8: a liquid discharge pipe interface; 9: liquid pumps (e.g., conventional vane type); 10: the metal sealing structure at least forms the periphery and the bottom of the liquid pump; 11: a liquid inlet pipe interface; 12: an inflation connecting pipe; p: an inflation nozzle mechanism connected through an inflation connecting pipe; k: a pressure display device (such as a pressure gauge) interface communicated with the inflation connecting pipe; d: the optimal welding ring part is suggested after the upper and lower fully-sealed entities (the isolation shielding cavity and the liquid pump sealing structure) are folded.

Detailed Description

In order to achieve the above object of the present invention, the following technical solutions can be adopted:

the method is characterized in that:

firstly, at least the rotor 2 is surrounded by the narrow metal seal isolation 4 in a three-dimensional manner, or at least the rotor 2 and the stator 1 are surrounded by the wide metal seal isolation 5 in a three-dimensional manner, and the bottom of the narrow metal seal isolation 4 or the wide metal seal isolation 5 is provided with a motor shaft seal 7 and a charging nozzle mechanism P and a pressure display device interface K which are connected through a charging connecting pipe 12 at most;

all splicing gaps related to the narrow metal seal isolation 4 or the wide metal seal isolation 5 are connected through a non-detachable welding process.

At least the periphery and the bottom of the liquid pump 9 are surrounded by a metal sealing structure 10 which is connected by a non-detachable welding process in a three-dimensional manner, and the liquid pump 9 is provided with a liquid inlet pipe interface 11 and a liquid outlet pipe interface 8;

the metal sealing structure 10 and the narrow metal sealing isolation 4 or the wide metal sealing isolation 5 form a metal sealing isolation cavity respectively, and the metal sealing isolation cavity is connected through a welding process of a non-detachable welding ring part D (the part D realizes seamless connection of the metal sealing isolation 4 and the wide metal sealing isolation 5, and structurally creates conditions for preventing molecules of external liquid flowing through the interior of the water pump from leaking.

The narrow metal seal isolation 4 is made of thin non-magnetic material (for example, stainless steel or brass with the thickness of 0.1 mm), and the narrow metal seal isolation 4 is partially in a detachable tight fit state with the circumferential part of the inner ring of the stator 1 (mainly, conditions are created for conveniently replacing the stator 1 provided with the wire winding which is relatively easy to damage under the water in the site by a large water pump).

The invention also discloses a use method of the same transfer pump capable of diving and land, which comprises the following steps:

a. when the diving is used: when the water pump is to be placed at a position below the water surface for use, firstly, the interior of the liquid pump is inflated through the inflating nozzle mechanism P, then the pressure display connected through the interface K of the pressure display device is used for observing, and when the inflation pressure is greater than the water pressure of the depth into which the water pump is to be submerged, the liquid pump can be placed below the water surface and electrified to start the liquid pump;

b. when in land use: when the water pump is put above the water surface for use, the water pump can be started to work after being electrified.

During the use process, the external liquid conveyed by the water pump can not leak outside the water pump.

If the liquid flowing through the liquid pump 9 is water, i.e. water molecules are allowed to leak to the outside, then the liquid pump 9 is positioned with the upper motor part in a detachable mode, i.e. a conventional bolt and nut positioning mode is utilized, water molecules in the liquid pump 9 are allowed to seep upwards through the inserted motor driving rotating shaft 6 and finally leak out through a gap positioned in the detachable mode, and obviously, the water molecules leaking to the outside have no influence on the use of the invention;

however, if the liquid flowing inside the route pump 9 is a valuable or extremely dangerous toxic fluid substance, the above-described "detachably positionable" construction is absolutely not permissible for the use of the invention. For this purpose, it is absolutely impossible to combine the above-mentioned "removable positioning" between the liquid pump 9 and the upper motor part, which must be "non-removable" (must be engaged by welding). The location of the weld ring portion D illustrated in fig. 1 and 2 is fully visible hereinafter.

Obviously:

for the deep submersible pump with the highest technical requirement, because the static sealing structure adopted in the prior art and the sealing element which must be matched with the static sealing structure can only meet the requirement of 'semi-sealing', the invention utilizes the 'gas jacking principle' to replace the 'semi-sealing' measure with serious defects, can achieve the optimal possibility of resisting the external high-pressure water body from permeating into the motor in a molecular form, and can prevent the transported liquid molecules in the water pump from leaking to the outside of the water pump structure. The invention achieves the integral technical effect of 'full sealing' type which can prevent the fluid molecules from passing through in the aspect of integral structure treatment.

The key points of the invention in the core technology are at least:

one is as follows: there cannot be any "bottom-to-top" fluid molecular channels on the housing (cavity) of the motor of the present invention (the "bottom-to-top" fluid molecular channels are clearly present in the prior art of "semi-sealed" structures).

To achieve this, it is necessary to form the housing (cavity) of the machine without a detachable seam, which must be achieved by welding. The structural requirement of this kind inevitably makes the one-time service life of the present invention depend on the service life of the adopted motor, and it is known that: the one-time service life of the motor at home and abroad can generally reach about 20 years, and the one-time service life of the world brand with high specification can reach 30 years or higher.

The second step is as follows: the inflating nozzle mechanism P is arranged on the adopted motor, and conditions are created for implementing pressure balance with external high-pressure water.

For example, when it is determined that the present invention is operated on a water bottom having a water depth of 100 m, it is necessary to previously inflate the gas through the air nozzle mechanism P at a pressure of more than 10 atmospheres (for example, 12 to 15 atmospheres). After the invention is sunk into the water bottom, the pressure in the motor can be slowly exhausted outwards through the gap of the shaft seal position 7 and automatically reduced to 10 atmospheric pressures, namely, the pressure is in a state of being balanced with the pressure of the external water body.

Obviously, according to the known knowledge, when the present invention is powered off and stopped, the temperature of the motor is reduced, and the external water body can slowly permeate into a small amount of water body through the gap of the shaft seal position 7 and be temporarily stored in the conical volume at the bottom of the motor, and when the present invention is powered on again, the motor is heated, and the water seepage which is temporarily stored at the conical bottom of the motor can be pressed to retreat from the original path, and then the circulation is carried out periodically. The hot and cold cyclical process is in accordance with the general state of the art. The water seepage temporarily stored in the invention is absolutely not increased, and the prior art absolutely increases the water seepage temporarily stored in the invention.