阅读说明：本技术 潜水电机平衡内外压差装置 (Balance internal and external pressure difference device for submersible motor ) 是由 朱庆龙 梁樑 王诚成 龚昌明 孙圣年 李明锋 林蔷 于 2020-12-29 设计创作，主要内容包括：本发明公开了一种潜水电机平衡内外压差装置,用于解决现有的潜水电机平衡内外压差装置,存在不能很好的对橡胶囊复位,同时对弹簧进行监测,来合理对电机腔降温,避免长时间压缩弹簧,导致其变形,无法使得橡胶囊复位的问题,包括潜水电机和电机腔；潜水电机的内部一端开设有电机腔,电机腔的内部固定安装有平衡内外压差装置；电机腔的内壁一侧安装保护机构；保护机构包括控制器、采集单元、存储单元、分析单元和冷凝单元；本发明增加了弹簧结构是防止橡胶压缩太狠无法自行复位,弹簧逐渐复位带动橡胶囊复位；控制器控制冷凝单元对电机腔内进行降温,避免长时间压缩弹簧,导致其变形,无法使得橡胶囊复位。(The invention discloses a balancing internal and external pressure difference device of a submersible motor, which is used for solving the problems that the existing balancing internal and external pressure difference device of the submersible motor cannot well reset a rubber bag, and simultaneously monitors a spring to reasonably cool a motor cavity and avoid the deformation of the spring caused by long-time compression of the spring, so that the rubber bag cannot be reset; a motor cavity is formed in one end of the interior of the submersible motor, and an internal and external pressure difference balancing device is fixedly installed in the motor cavity; a protection mechanism is arranged on one side of the inner wall of the motor cavity; the protection mechanism comprises a controller, an acquisition unit, a storage unit, an analysis unit and a condensation unit; the invention adds the spring structure to prevent the rubber from being compressed too strongly and being unable to reset automatically, and the spring is reset gradually to drive the rubber bag to reset; the controller controls the condensation unit to cool the motor cavity, so that the spring is prevented from being compressed for a long time, the deformation of the spring is avoided, and the rubber bag cannot be reset.)

1. The device for balancing the internal and external pressure difference of the submersible motor comprises a submersible motor (1) and a motor cavity (2); the submersible motor is characterized in that a motor cavity (2) is formed in one end of the interior of the submersible motor (1), and a device (3) for balancing internal and external pressure differences is fixedly installed in the motor cavity (2);

the device (3) for balancing the internal and external pressure difference comprises a spring (5), a rubber bag (6) and a base (7); the rubber bag (6) is installed on the upper end face of the base (7), the spring (5) is installed inside the rubber bag (6), the top of the rubber bag (6) is inlaid with the fixing block (16), the top end of the spring (5) is fixedly connected with the fixing block (16) on the top of the rubber bag (6), and the bottom end of the spring (5) is fixedly installed on the base (7);

the upper end face of the base (7) is provided with fixed blocks (9) on two sides of the spring (5), the bottom of each fixed block (9) is provided with a first threaded hole (10), the base (7) is provided with a first insertion hole (12) under the first threaded hole (10), and first bolts (13) are arranged in the first threaded hole (10) and the first insertion hole (12); a clamping block (11) is arranged on one side, close to the rubber bag (6), of the fixing block (9); clamping grooves (8) are formed in the two sides of the bottom of the rubber bag (6), and clamping blocks (11) are clamped in the clamping grooves (8);

a protection mechanism (15) is arranged on one side of the inner wall of the motor cavity (2); the protection mechanism (15) comprises a controller, a collection unit, a storage unit, an analysis unit and a condensation unit;

the acquisition unit is used for acquiring the distance between the fixed block (16) and the base (7) and the corresponding time and sending the distance and the corresponding time to the storage unit for storage;

the analysis unit is used for acquiring the distance between the fixed block (16) and the base (7) stored in the storage unit and corresponding time and analyzing; the specific analysis steps are as follows:

the method comprises the following steps: when the distance between the fixed block (16) and the base (7) is smaller than or equal to a set distance threshold value, timing is started; when the distance between the fixed block (16) and the base (7) is larger than a set distance threshold value, stopping timing;

step two: when the timing duration is equal to a set threshold and the distance between the fixed block (16) and the base (7) is always smaller than or equal to the set distance threshold within the time range of the timing duration, the analysis unit generates a cooling instruction and sends the cooling instruction to the controller, and when the distance between the fixed block (16) and the base (7) is larger than the set distance threshold and the time is equal to or longer than the preset duration, the analysis unit generates a stop instruction and sends the stop instruction to the controller;

the controller receives the cooling instruction and then controls the condensing unit to cool the interior of the motor cavity (2), and the controller stops after receiving the stopping instruction.

2. The submersible motor internal and external pressure difference balancing device according to claim 1, wherein the two sides of the base (7) are provided with second jacks (5); a second threaded hole (4) is formed in the side wall of one side of the motor cavity (2), and a second bolt is installed in the second jack (5) and the second threaded hole (4).

3. The submersible motor balance internal and external pressure difference device according to claim 1, wherein the center of the side wall of the motor cavity (2) and the center of the base (7) are both provided with a center hole (14); the two central holes (14) are equal in size, and the centers of the cross sections of the two central holes (14) are located on the same axis.

4. The submersible motor pressure difference inside and outside balancing device according to claim 1, wherein the condensing unit comprises a first condensing pipe, a second condensing pipe and a circulating water pump; first condenser pipe, the inner wall in motor chamber (2) is installed respectively to the second condenser pipe, and the inner wall that the one end port of first condenser pipe and the one end port of second condenser pipe all run through motor chamber (2) is located outside dive motor (1), the other end port of first condenser pipe and the other end port of second condenser pipe respectively with circulating water pump's water inlet, delivery port through connection, the analysis unit is through the work of control circulating water pump, circulating water pump sucks first condenser pipe with the outer water of dive motor (1), then outside second condenser pipe inflow dive motor (1), cool down the inside in motor chamber (2).

Technical Field

The invention relates to the field of internal and external differential pressure balancing equipment of a submersible motor, in particular to an internal and external differential pressure balancing device of the submersible motor.

Background

The water-filled submersible motor is required to be submerged for operation, the submerging depth is possibly hundreds of meters, and therefore the external pressure environment is sometimes very severe; because the motor cavity is sealed, the temperature of cooling water in the motor cavity is increased due to the operation of the motor, the internal pressure is changed, and if no effective device is available, the internal pressure and the external pressure can be balanced, so that serious consequences can be caused.

The balanced inside and outside pressure differential device of current dive motor, the existence can not be fine resets to the rubber bag, monitors the spring simultaneously, comes rationally to the motor chamber cooling, avoids long-time compression spring, leads to its deformation, can't make the rubber bag reset.

Disclosure of Invention

The invention aims to solve the problems that the existing diving motor balancing internal and external differential pressure device cannot reset the rubber bag well, and simultaneously monitors the spring to reasonably cool the motor cavity and avoid the deformation of the spring caused by long-time compression of the spring and the failure of resetting the rubber bag, and provides the diving motor balancing internal and external differential pressure device; the invention adds the spring structure to prevent the rubber from being compressed too strongly and being unable to reset automatically, and the spring is reset gradually to drive the rubber bag to reset; the controller controls the condensation unit to cool the motor cavity, so that the spring is prevented from being compressed for a long time, the deformation of the spring is avoided, and the rubber bag cannot be reset.

The purpose of the invention can be realized by the following technical scheme: the diving motor balance internal and external pressure difference device comprises a diving motor and a motor cavity; a motor cavity is formed in one end of the interior of the submersible motor, and a device for balancing internal and external pressure differences is fixedly arranged in the motor cavity;

the device for balancing the internal and external pressure difference comprises a spring, a rubber bag and a base; the upper end surface of the base is provided with a rubber bag, a spring is arranged in the rubber bag, a fixed block is embedded in the top of the rubber bag, the top end of the spring is fixedly connected with the fixed block at the top of the rubber bag, and the bottom end of the spring is fixedly arranged on the base;

the upper end surface of the base is provided with fixed blocks at two sides of the spring, the bottom of each fixed block is provided with a first threaded hole, the base is provided with a first jack under the first threaded hole, and first bolts are arranged in the first threaded hole and the first jack; a clamping block is arranged on one side, close to the rubber bag, of the fixed block; clamping grooves are formed in the two sides of the bottom of the rubber bag, and clamping blocks are clamped in the clamping grooves;

a protection mechanism is arranged on one side of the inner wall of the motor cavity; the protection mechanism comprises a controller, an acquisition unit, a storage unit, an analysis unit and a condensation unit;

the acquisition unit is used for acquiring the distance between the fixed block and the base and the corresponding time and sending the distance and the corresponding time to the storage unit for storage;

the analysis unit is used for acquiring the distance between the fixed block and the base stored in the storage unit and corresponding time and analyzing; the specific analysis steps are as follows:

the method comprises the following steps: when the distance between the fixed block and the base is smaller than or equal to a set distance threshold value, timing is started; when the distance between the fixed block and the base is larger than a set distance threshold value, stopping timing;

step two: when the timing duration is equal to a set threshold and the distance between the fixed block and the base is always smaller than or equal to the set distance threshold within the time range of the timing duration, the analysis unit generates a cooling instruction and sends the cooling instruction to the controller, and when the distance between the fixed block and the base is larger than the set distance threshold and the time exceeds the preset duration, the analysis unit generates a stop instruction and sends the stop instruction to the controller;

the controller receives the cooling instruction and then controls the condensing unit to cool the interior of the motor cavity, and the controller stops after receiving the stopping instruction.

Preferably, the two sides of the base are provided with second jacks; a second threaded hole is formed in the side wall of one side of the motor cavity, and a second bolt is installed in the second jack and the second threaded hole.

Preferably, the center of the side wall of the motor cavity and the center of the base are both provided with center holes; the two center holes are equal in size, and the circle centers of the sections of the two center holes are located on the same axis.

Preferably, the condensing unit comprises a first condensing pipe, a second condensing pipe and a circulating water pump; first condenser pipe, the inner wall in motor chamber is installed respectively to the second condenser pipe, and the inner wall that the one end port of first condenser pipe and the one end port of second condenser pipe all run through the motor chamber is located outside the underwater motor, the other end port of first condenser pipe and the other end port of second condenser pipe respectively with circulating water pump's water inlet, delivery port through connection, the analysis unit is through control circulating water pump work, circulating water pump sucks first condenser pipe with the water outside the underwater motor, then outside second condenser pipe flow enters the underwater motor, cool down the inside in motor chamber.

Compared with the prior art, the invention has the beneficial effects that:

1. the pressure difference device comprises a spring, a rubber bag and a base, when the temperature in the cavity is reduced and recovered after the motor stops running, the rubber bag is reset, the spring structure is added to prevent the rubber from being compressed too strongly and being incapable of resetting by self, and the spring is reset gradually to drive the rubber bag to reset; the analysis unit is used for acquiring the distance between the fixed block and the base stored in the storage unit and corresponding time and analyzing; when the distance between the fixed block and the base is smaller than or equal to a set distance threshold value, timing is started; when the timing duration is equal to a set threshold, and in a time range of the timing duration, the distance between the fixed block and the base is always smaller than or equal to the set distance threshold, the analysis unit generates a cooling instruction and sends the cooling instruction to the controller, and the controller controls the condensation unit to cool the motor cavity, so that the phenomenon that the spring is compressed for a long time to deform and the rubber bag cannot reset is avoided.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view of the overall construction of the present invention;

FIG. 2 is a sectional view showing the overall structure of the device for balancing internal and external differential pressures according to the present invention;

fig. 3 is a functional block diagram of the protection mechanism of the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the device for balancing internal and external pressure difference of a submersible motor comprises a submersible motor 1 and a motor cavity 2; a motor cavity 2 is formed in one end of the interior of the submersible motor 1, and a device 3 for balancing the internal and external pressure difference is fixedly arranged in the motor cavity 2;

the device 3 for balancing the internal and external pressure difference comprises a spring 5, a rubber bag 6 and a base 7; the rubber bag 6 is installed on the upper end face of the base 7, the spring 5 is installed inside the rubber bag 6, the fixed block 16 is embedded in the top of the rubber bag 6, the top end of the spring 5 is fixedly connected with the fixed block 16 in the top of the rubber bag 6, and the bottom end of the spring 5 is fixedly installed on the base 7;

the upper end surface of the base 7 is provided with fixed blocks 9 on two sides of the spring 5, the bottom of each fixed block 9 is provided with a first threaded hole 10, the base 7 is provided with a first jack 12 under the first threaded hole 10, and first bolts 13 are arranged in the first threaded hole 10 and the first jack 12; a clamping block 11 is arranged on one side of the fixed block 9 close to the rubber bag 6; clamping grooves 8 are formed in the two sides of the bottom of the rubber bag 6, and clamping blocks 11 are clamped in the clamping grooves 8;

a protection mechanism 15 is arranged on one side of the inner wall of the motor cavity 2; the protection mechanism 15 comprises a controller, an acquisition unit, a storage unit, an analysis unit and a condensation unit;

the acquisition unit is used for acquiring the distance between the fixed block 16 and the base 7 and the corresponding time and sending the distance and the corresponding time to the storage unit for storage;

the analysis unit is used for acquiring the distance between the fixed block 16 and the base 7 stored in the storage unit and corresponding time and analyzing; the specific analysis steps are as follows:

the method comprises the following steps: when the distance between the fixed block 16 and the base 7 is less than or equal to a set distance threshold, timing is started; when the distance between the fixed block 16 and the base 7 is larger than a set distance threshold value, stopping timing;

step two: when the timing duration is equal to a set threshold and the distance between the fixed block 16 and the base 7 is always smaller than or equal to the set distance threshold within the time range of the timing duration, the analysis unit generates a cooling instruction and sends the cooling instruction to the controller, and when the distance between the fixed block 16 and the base 7 is larger than the set distance threshold and the time is larger than the preset time, the analysis unit generates a stop instruction and sends the stop instruction to the controller;

the controller receives the cooling instruction and then controls the condensing unit to cool the interior of the motor cavity 2, and the controller stops after receiving the stopping instruction.

Two sides of the base 7 are provided with second jacks 5; a second threaded hole 4 is formed in the side wall of one side of the motor cavity 2, and a second bolt is installed in the second jack 5 and the second threaded hole 4.

The center of the side wall of the motor cavity 2 and the center of the base 7 are both provided with a center hole 14; the two central holes 14 are equal in size, and the centers of the cross sections of the two central holes 14 are located on the same axis.

The condensation unit comprises a first condensation pipe, a second condensation pipe and a circulating water pump; first condenser pipe, the inner wall at motor chamber 2 is installed respectively to the second condenser pipe, and the inner wall that the one end port of first condenser pipe and the one end port of second condenser pipe all run through motor chamber 2 is located outside dive motor 1, the other end port of first condenser pipe and the other end port of second condenser pipe respectively with circulating water pump's water inlet, delivery port through connection, the analysis unit is through the work of control circulating water pump, circulating water pump sucks first condenser pipe with the outer water of dive motor 1, then outside diving motor 1 is gone into to the second condenser pipe, cool down the inside of motor chamber 2.

When the diving depth P1 of the diving motor 1 is P2, the device is maintained as it is;

when the temperature in the motor cavity rises and the pressure is higher than P1 and is higher than P2, the space in the rubber bag 6 is compressed, the spring 5 contracts, the volume in the motor cavity 2 is increased, and the pressure is released;

when the temperature in the cavity is reduced and recovered after the motor stops running, the rubber bag 6 is reset, the structure of the spring 5 is added to prevent the rubber from being compressed too deeply and being incapable of resetting automatically, and the spring 5 is reset gradually to drive the rubber bag 6 to reset;

when the device is used, the internal and external pressure difference device 3 comprises the spring 5, the rubber bag 6 and the base 7, when the temperature in the cavity is reduced and recovered after the motor stops running, the rubber bag 6 is reset, the structure of the spring 5 is added to prevent the rubber from being compressed too strongly and not reset automatically, and the spring 5 is reset gradually to drive the rubber bag 6 to reset; the analysis unit is used for acquiring the distance between the fixed block 16 and the base 7 stored in the storage unit and corresponding time and analyzing; when the distance between the fixed block 16 and the base 7 is less than or equal to a set distance threshold, timing is started; when the timing duration is equal to a set threshold value, and the timing duration belongs to a time range, the distance between the fixed block 16 and the base 7 is always smaller than or equal to the set distance threshold value, the analysis unit generates a cooling instruction and sends the cooling instruction to the controller, and the controller controls the condensation unit to cool the interior of the motor cavity 2, so that the phenomenon that the spring 5 is compressed for a long time to deform and the rubber bag 6 cannot reset is avoided.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.