阅读说明：本技术 一种用于驱动泥浆泵的水冷变频一体机和泥浆循环系统 (Water-cooling frequency conversion all-in-one machine for driving slurry pump and slurry circulation system ) 是由 宋承林 姜占光 钟军伟 沈宜敏 丁国利 于 2020-05-25 设计创作，主要内容包括：本发明涉及一种用于驱动泥浆泵的水冷变频一体机和泥浆循环系统,水冷变频一体机包括水冷电机(1)、变频设备(2)、隔爆机构(3)和冷却系统(4),其中水冷电机(1)用于驱动泥浆泵；变频设备(2)通过变频操作来控制所述水冷电机(1)的转动；隔爆机构(3)可拆卸固定于所述变频设备(2)和水冷电机(1)上,并且用于对所述变频设备(2)和水冷电机(1)进行防爆；以及,冷却系统(4)可拆卸固定于所述水冷电机(1)上,并且用于对所述水冷电机(1)和变频设备(2)进行散热。本发明可以满足与泥浆泵相关的电气设备符合二类防爆要求,减少泥浆泵及其相关电气设备的整体占用面积,以及便于对水冷电机的控制。(The invention relates to a water-cooling frequency conversion all-in-one machine and a slurry circulation system for driving a slurry pump, wherein the water-cooling frequency conversion all-in-one machine comprises a water-cooling motor (1), frequency conversion equipment (2), an explosion-proof mechanism (3) and a cooling system (4), wherein the water-cooling motor (1) is used for driving the slurry pump; the frequency conversion equipment (2) controls the rotation of the water-cooling motor (1) through frequency conversion operation; the explosion-proof mechanism (3) is detachably fixed on the frequency conversion equipment (2) and the water-cooled motor (1) and is used for preventing the frequency conversion equipment (2) and the water-cooled motor (1) from explosion; and the cooling system (4) is detachably fixed on the water-cooled motor (1) and is used for dissipating heat of the water-cooled motor (1) and the frequency conversion equipment (2). The invention can meet the requirement that the electrical equipment related to the slurry pump meets the two-class explosion-proof requirement, reduces the whole occupied area of the slurry pump and the related electrical equipment thereof, and is convenient for controlling the water-cooling motor.)

1. A water-cooling frequency conversion all-in-one machine for driving a mud pump comprises:

a water-cooled motor (1) for driving a slurry pump;

a frequency conversion device (2) connected with the water-cooled motor (1) so as to control the rotation of the water-cooled motor (1) through frequency conversion operation;

the explosion-proof mechanism (3) is detachably fixed on the frequency conversion equipment (2) and the water-cooled motor (1), and is used as a shell of the frequency conversion equipment (2) for preventing explosion of the frequency conversion equipment (2) and the water-cooled motor (1); and

and the cooling system (4) is detachably fixed on the water-cooled motor (1) and is used for dissipating heat of the water-cooled motor (1) and the frequency conversion equipment (2).

2. The water-cooling frequency conversion all-in-one machine as claimed in claim 1, wherein the cooling system (4) comprises a cooling structure for absorbing heat of the water-cooling motor (1) and a frequency conversion water-cooling plate (41) for absorbing heat of the explosion-proof mechanism (3).

3. A water-cooled inverter all-in-one machine as claimed in claim 2, wherein the cooling structure is arranged on the water-cooled motor (1) casing and is provided with one or more cooling channels for absorbing heat of the water-cooled motor (1).

4. The water-cooling and frequency-converting all-in-one machine as claimed in claim 2, wherein the frequency-converting water-cooling plate (41) is fixed outside the explosion-proof mechanism (3), and one or more cooling pipes for absorbing heat of the explosion-proof mechanism (3) are arranged.

5. A water-cooled inverter all-in-one machine as claimed in claim 2, wherein the cooling system (4) comprises a heat dissipating structure (42) in communication with the cooling structure and the inverter water-cooled plate (41), and a cooling fluid circulating between the cooling structure, the inverter water-cooled plate (41) and the heat dissipating structure (42), wherein the heat dissipating structure (42) is configured to reduce the temperature of the cooling fluid passing therethrough.

6. The water-cooling frequency conversion all-in-one machine as claimed in claim 1, wherein the water-cooling motor (1) and the frequency conversion equipment (2) are connected through a Glan head or a cable joint.

7. The water-cooling frequency conversion all-in-one machine as claimed in claim 1, wherein the explosion-proof mechanism (3) comprises a junction box (31) connected with the outside, and the frequency conversion equipment (2) comprises a reactor and a contactor which are located in the junction box (31).

8. The water-cooling frequency conversion all-in-one machine as claimed in claim 1, wherein the explosion-proof mechanism (3) is a closed box body formed by a partition plate with a certain thickness.

9. The water-cooling frequency conversion all-in-one machine of claim 1, further comprising a bracket (5) fixed on the water-cooling motor, wherein the flame-proof mechanism (3) and the cooling system (4) are detachably fixed on the bracket (5).

10. A mud circulation system comprising:

a slurry pump; and

two water-cooling frequency conversion all-in-one machines according to any one of claims 1-9, which are symmetrically arranged, wherein the respective water-cooling motors of the two water-cooling frequency conversion all-in-one machines are connected with the mud pump for driving the mud pump.

Technical Field

The present invention relates generally to the field of water cooled electric machines. More particularly, the invention relates to a water-cooling frequency conversion all-in-one machine and a mud circulating system for driving a mud pump.

Background

In the current oil drilling industry, mud pumps require frequent transfers compared to other machines. The drive motor of the existing slurry pump mainly has two common forms of direct drive and belt drive. Both forms of drive motor are arranged at the slurry pump and a frequency converter is provided in the non-explosion-proof region for controlling the drive motor. The arrangement mode causes that the mud pump and the related electrical equipment not only occupy larger space and are inconvenient to transport, but also have the defects of inconvenient communication and difficult control of the driving motor and the variable frequency control part. Furthermore, the electrical equipment related to the mud pump in the use environment of the mud pump also needs to meet the requirements of explosion prevention of the second type. Therefore, how to reduce the overall occupied area of the slurry pump and better control the driving motor is a problem which needs to be solved at present.

Disclosure of Invention

In view of the defects in the prior art, the invention aims to provide a water-cooling frequency conversion all-in-one machine and a slurry circulation system for driving a slurry pump, wherein the arranged water-cooling frequency conversion all-in-one machine can meet the requirement that electrical equipment related to the slurry pump meets the second-class explosion-proof requirement, reduce the overall occupied area of the slurry pump and the related electrical equipment thereof, and conveniently and accurately control a water-cooling motor.

In order to achieve the purpose, the invention provides the following technical scheme:

in a first aspect, the present invention provides a water-cooled variable frequency all-in-one machine for driving a mud pump, comprising:

the water-cooling motor is used for driving the slurry pump;

the frequency conversion equipment is connected with the water-cooling motor so as to control the rotation of the water-cooling motor through frequency conversion operation;

the explosion-proof mechanism is detachably fixed on the frequency conversion equipment and the water-cooled motor and is used as a shell of the frequency conversion equipment for preventing explosion of the frequency conversion equipment and the water-cooled motor; and

and the cooling system is detachably fixed on the water-cooled motor and is used for dissipating heat of the water-cooled motor and the frequency conversion equipment.

In one embodiment, the cooling system comprises a cooling structure for absorbing heat of the water-cooled motor and a variable-frequency water-cooled plate for absorbing heat of the explosion-proof mechanism.

In one embodiment, the cooling structure is arranged on the water-cooled motor shell and is provided with one or more cooling channels for absorbing heat of the water-cooled motor.

In one embodiment, the variable-frequency water-cooling plate is fixed outside the explosion-proof mechanism, and one or more cooling pipelines for absorbing heat of the explosion-proof mechanism are arranged.

In one embodiment, the cooling system comprises a heat dissipation structure in communication with the cooling structure and the variable frequency water cooling plate, and a cooling fluid in communication between the cooling structure, the variable frequency water cooling plate, and the heat dissipation structure, wherein the heat dissipation structure is configured to reduce the temperature of the cooling fluid passing therethrough.

In one embodiment, the water-cooled motor and the frequency conversion equipment are connected through a Glan head or a cable joint.

In one embodiment, the explosion suppression mechanism comprises a junction box connected with the outside, and the frequency conversion equipment comprises a reactor and a contactor which are located in the junction box.

In one embodiment, the explosion suppression mechanism is a closed box body formed by a partition plate with a certain thickness.

In one embodiment, the explosion-proof device further comprises a support fixed on the water-cooling motor, and the explosion-proof mechanism and the cooling system are detachably fixed on the support.

In a second aspect, the present invention also provides a mud circulation system comprising:

a slurry pump; and

the two water-cooling frequency conversion all-in-one machines are symmetrically arranged, wherein the water-cooling motors of the two water-cooling frequency conversion all-in-one machines are connected with the slurry pump so as to drive the slurry pump.

Compared with the prior art, the explosion-proof mechanism can be used for preventing the frequency conversion equipment and the water-cooled motor from explosion. In addition, the frequency conversion equipment and the cooling system are detachably fixed on the water-cooling motor as a whole, so that the whole occupied area of the slurry pump and the related electrical equipment can be reduced. Furthermore, due to the modular design and integration of the frequency conversion equipment and the water-cooling motor, the communication distance between the frequency conversion equipment and the water-cooling motor can be reduced, so that the water-cooling motor can be directly and conveniently and accurately controlled on a construction site.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:

FIG. 1 is a schematic structural diagram illustrating a water-cooling frequency conversion all-in-one machine for driving a mud pump according to an embodiment of the invention;

FIG. 2 is a top view of a water cooled variable frequency all-in-one machine for driving a mud pump according to an embodiment of the invention;

FIG. 3 is a schematic structural diagram showing an explosion-proof mechanism of the water-cooling frequency conversion all-in-one machine for driving the mud pump according to the embodiment of the invention; and

FIG. 4 is a schematic diagram of a water-cooled variable frequency all-in-one machine of a mud circulation system according to an embodiment of the invention.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram illustrating a water-cooling frequency conversion all-in-one machine for driving a mud pump according to an embodiment of the invention; FIG. 2 is a top view of a water cooled variable frequency all-in-one machine for driving a mud pump according to an embodiment of the invention. As shown in fig. 1 and fig. 2, the water-cooling frequency conversion all-in-one machine provided by the embodiment of the invention may include a water-cooling motor 1, a frequency conversion device 2, an explosion suppression mechanism 3 and a cooling system 4. In one embodiment, the water cooled motor 1 described above may be used to drive a mud pump. Preferably, the water-cooled motor 1 may be an increased safety type motor having a high safety level capable of preventing dangerous temperatures, arcs and sparks from occurring in its internal and external parts. Further, the inverter device 2 may be connected to the water-cooled motor 1 so as to control the rotation of the water-cooled motor 1 through the inverter operation. The explosion-proof mechanism 3 is detachably fixed on the frequency conversion equipment 2 and the water-cooled motor 1 and is used for preventing explosion of the frequency conversion equipment 2 and the water-cooled motor 1 as a shell of the frequency conversion equipment 2. In addition, the cooling system 4 is detachably fixed to the water-cooled motor 1, and is used for dissipating heat of the water-cooled motor 1 and the inverter device 2.

In an actual application scenario, the explosion-proof mechanism 3 can perform explosion-proof on the frequency conversion device 2 and the water-cooled motor 1, so that electrical equipment related to the slurry pump can meet the requirements of the second type of explosion-proof grade. Meanwhile, the frequency conversion equipment 2 and the cooling system 4 are modularly integrated and detachably fixed on the water-cooling motor 1, so that the overall occupied area of the slurry pump and related electrical equipment (including the water-cooling motor 1, the frequency conversion equipment 2, the explosion-proof mechanism 3, the cooling system 4 and the like) can be reduced, and the communication distance between the frequency conversion equipment 2 and the water-cooling motor 1 is further reduced. The modularized arrangement is beneficial for the frequency conversion equipment to accurately control the water-cooled motor, and the problems of communication delay, interruption and difficulty in control and adjustment caused by long communication distance can be avoided.

In one embodiment, the water-cooled motor 1 and the frequency conversion equipment 2 in the water-cooled frequency conversion all-in-one machine can be detachably connected through a Glan head or a cable joint. Through the connection arrangement, when the water-cooling frequency conversion integrated machine is disassembled, the water-cooling motor 1 and the frequency conversion equipment 2 can be disassembled and separated through the Glan head or the cable joint, and then the frequency conversion equipment 2, the explosion-proof mechanism 3 and the water-cooling system 4 are disassembled. Because the glan head or the cable joint has the characteristic of high strength, the glan head or the cable joint can also play an explosion-proof role to a certain extent.

In one embodiment, the cooling system 4 may include a cooling structure for absorbing heat of the water-cooled motor 1 and a variable frequency water-cooled plate 41 for absorbing heat of the explosion suppression mechanism 3. Through the arrangement of the cooling structure and the variable-frequency water cooling plate 41, heat emitted by the water cooling motor 1 and the explosion suppression mechanism 3 can be absorbed, so that the working temperature of the water cooling and variable-frequency all-in-one machine can be reduced, and the running stability and safety of the whole machine are improved. Further, the specific structure of the cooling structure may be selected as desired. In one application scenario, the cooling structure may be disposed on the casing of the water-cooled motor 1, and one or more cooling channels for absorbing heat of the water-cooled motor 1 are provided, and the cooling channels may be disposed along the axial direction of the water-cooled motor 1. In another application scenario, the cooling structure may be composed of one or more cooling pipes, wherein the cooling pipes are disposed around the housing of the water-cooled motor 1. By the cooling structure, the water-cooled motor 1 can be cooled. In addition, the variable-frequency water cooling plate 41 is fixed outside the explosion-proof mechanism 3, and one or more cooling pipelines for absorbing heat of the explosion-proof mechanism 3 are arranged. Wherein, the number of the variable frequency water cooling plates 41 can be selected according to the requirement. In an application scenario, the variable-frequency water-cooling plate 41 is arranged on one side of the explosion-proof mechanism 3, and a device which is easy to generate heat when working in the variable-frequency device 2 is fixed on the inner wall of the variable-frequency water-cooling plate 41. In another application scenario, the plurality of variable frequency water cooling plates 41 are respectively fixed on a plurality of sides of the explosion suppression mechanism 3, and through heat absorption of the plurality of sides, the variable frequency water cooling plates 41 can reduce the temperature in the explosion suppression mechanism 3, so that the safety and stability of the variable frequency device 2 in the explosion suppression mechanism 3 during operation can be improved.

Further, the cooling system 4 may further include a heat dissipation structure 42 in communication with the cooling structure and the variable-frequency water-cooling plate 41, and a cooling fluid circulating among the cooling structure, the variable-frequency water-cooling plate 41, and the heat dissipation structure 42, in addition to the cooling structure and the variable-frequency water-cooling plate 41, wherein the heat dissipation structure 42 is configured to reduce the temperature of the cooling fluid passing through. Specifically, the heat dissipation structure 42 is arranged to cool the passing cooling liquid, so that the temperature of the cooling liquid passing through the heat dissipation structure 42 is low, and the cooling liquid is cooled when passing through the cooling structure and the variable frequency water cooling plate 41. Furthermore, the cooling system 4 may further include a water pump 43 for driving the cooling fluid to circulate among the cooling structure, the variable frequency water cooling plate 41 and the heat dissipation structure 42, so as to ensure that the cooling fluid enters the heat dissipation structure 42 to dissipate heat after absorbing heat at the cooling structure and the variable frequency water cooling plate 41. In addition, the structure of the heat dissipation structure 42 may be selected as needed. In one embodiment, the heat dissipating structure 42 may include cooling tubes in communication with the cooling structure and the variable frequency water cold plate 41, and a fan for accelerating heat exchange of the cooling tubes. The fan increases the wind speed at the cooling pipe, so that the heat exchange of the cooling pipe can be accelerated, and the cooling operation of cooling liquid in the cooling pipe can be further achieved. In another embodiment, the heat dissipation structure 42 may include a cooling pipe in communication with the cooling structure and the variable frequency water cooling plate 41, and a container through which the cooling pipe is inserted, wherein a sublimable medium (e.g., aluminum chloride, iodine, etc.) is disposed in the container, and the medium is used for absorbing heat of the cooling pipe.

As shown in fig. 1, the water-cooling frequency conversion all-in-one machine further comprises a support 5 fixed on the water-cooling motor, and an explosion-proof mechanism 3 and a cooling system 4 are detachably fixed on the support 5. The support 5 can be convenient for the demountable installation of flame proof mechanism 3 and cooling system 4, and simultaneously the support 5 still is favorable to the certain distance with frequency conversion equipment 2 and water cooled machine 1 interval to reduce the interact between frequency conversion equipment 2 and water cooled machine 1, improve the security level. In one embodiment, the bracket 5 may further be provided with a lifting lug, and the lifting lug may provide an acting point when the water-cooling frequency conversion all-in-one machine is transported, so that transportation is facilitated and the safety during transportation can be improved. In addition, can also be equipped with a plurality of outlets on the support 5, be used for the glan head or the cable joint of connecting between water cooled machine 1 and frequency conversion equipment 2 all can be through this outlet to can play certain storage effect to the wiring of water cooled machine 1 and frequency conversion equipment 2, avoid because the wiring of water cooled machine 1 and frequency conversion equipment 2 too mixed and disorderly and lead to appearing the condition that is difficult to dismantle.

Fig. 3 is a schematic structural diagram showing the flameproof mechanism 3 of the water-cooling frequency conversion all-in-one machine for driving the mud pump according to the embodiment of the invention. Referring to fig. 1 to 3, the explosion suppression mechanism 3 may include a terminal box 31 for connecting with the outside, and the frequency conversion device 2 may include a reactor and a contactor located in the terminal box 31. The arrangement of the junction box 31 can ensure that the explosion-proof mechanism 3 has explosion-proof effect on the frequency conversion equipment 2 and the water-cooled motor 1, and is used for connecting the frequency conversion equipment 2 with external equipment or devices. In an application scenario, the terminal box 31 has an opening, and a flip cover is disposed at the opening. When the frequency conversion device 2 needs to be connected with external equipment or devices, the flip cover can be opened and the connection can be carried out. When the frequency conversion equipment 2 needs to be isolated from the outside, the opening can be closed by closing the turnover cover so as to complete the closing of the explosion-proof mechanism 3, and therefore the explosion-proof coefficient of the explosion-proof mechanism 3 to the frequency conversion equipment 2 and the water-cooled motor 1 is improved. In one embodiment, the explosion suppression mechanism 3 can be a closed box body formed by a partition plate with a certain thickness. Furthermore, the thickness, material composition and other aspects of the partition meet the national standard of explosion suppression.

Fig. 4 is a schematic diagram illustrating a water-cooled variable frequency all-in-one machine 401 of a mud circulation system 400 according to an embodiment of the invention. As shown in fig. 4, the embodiment of the present invention further provides a slurry circulation system 400, which includes a slurry pump and two water-cooling frequency conversion all-in-one machines 401 symmetrically arranged, wherein the respective water-cooling motors 1 of the two water-cooling frequency conversion all-in-one machines are connected to the slurry pump for driving the slurry pump. For example, driven by the symmetrically arranged water-cooling frequency conversion all-in-one machine of the invention, a mud pump can directly convey water, mud or flushing fluid and other surface flushing media to the bottom end of the drill bit through a water tap, a high-pressure hose and a central hole of a drill string under certain pressure so as to cool the drill bit, drive drilling and convey broken rock debris and the like back to the ground. In specific operation, the water-cooling frequency conversion integrated machine of the invention drives a crankshaft of a slurry pump to rotate, and then the crankshaft drives a plunger or a piston to reciprocate in a pump cylinder of the slurry pump. With the alternation of suction valve closing and discharge valve opening, pressure-feed and cyclic flushing operations can be achieved. In an application scenario, when two water-cooling frequency conversion integrated machines 401 are symmetrically arranged at the slurry pump left and right, the frequency conversion equipment 2, the explosion suppression mechanism 3 and the cooling system 4 can be detachably fixed with the water-cooling motor 1 respectively. Therefore, when any one of the water-cooling frequency conversion integrated machines 401 in operation fails, the corresponding failure parts (the frequency conversion equipment 2, the explosion suppression mechanism 3 and the cooling system 4 or the water-cooling motor 1) can be directly detached and replaced. In addition, because the two water-cooling frequency conversion all-in-one machines 401 are the same in structure, only one production device is needed when the water-cooling frequency conversion all-in-one machine 401 is produced, the situation that two production devices are needed to produce two different water-cooling frequency conversion all-in-one machines is avoided, and the production cost is reduced.

It should be understood that the terms "first," "second," "third," and "fourth," etc. in the claims, description, and drawings of the present disclosure are used to distinguish between different objects and are not used to describe a particular order. The terms "comprises" and "comprising," when used in the specification and claims of this disclosure, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the disclosure herein is for the purpose of describing particular embodiments only, and is not intended to be limiting of the disclosure. As used in the specification and claims of this disclosure, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the specification and claims of this disclosure refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.

As used in this specification and claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".

Although the embodiments of the present invention are described above, the descriptions are only examples for facilitating understanding of the present invention, and are not intended to limit the scope and application scenarios of the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.