Mining explosion-proof water circulation type high-voltage combined frequency converter

Abstract

According to the mining explosion-proof water circulation type high-voltage combined frequency converter provided by the utility model, each frequency converter control unit corresponds to one water cooling unit, the circulation cooling channel is arranged to be an S-shaped loop, water in the channel can be automatically circulated and discharged by gravity, the situation that the frequency converter control units are damaged due to the fact that water accumulates in the channel and dewdrops are generated is prevented, faults are not easy to occur, and the service life of the frequency converter is prolonged. The frequency converter control unit can be moved out of the explosion-proof cabinet body by loosening the second locking piece, so that the maintenance is convenient, and the maintenance convenience is improved; adjacent frequency converter control units are arranged in parallel, when one frequency converter breaks down, the corresponding first contactor is disconnected, normal operation of the whole loop is protected, and the use efficiency is guaranteed. The chambers are arranged in a combined manner, so that the occupied area is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mining equipment, more particularly to a mine explosion-proof water circulation type high-voltage combined frequency converter. BACKGROUND

[0002] With the rapid development of China's coal industry, high-yield and high-efficiency mines are being established and put into production, and underground fully-mechanized mining equipment is gradually developing towards mechatronic high-end technology, building a new generation of high-yield and high-efficiency fully-mechanized mining face equipment with large production capacity, high automation level, safety and reliability, and doubling of single output and work efficiency, realizing and promoting highly intensive production of one mine, one shaft and one face.

[0003] The power of the existing working face scraper conveyor is getting larger and larger, and the voltage level of the three-machine equipment of the working face of many mines has become 3300v. For large function motors, the conventional method is to use a hydraulic coupler or a double-speed motor to solve the motor starting problem, but it does not solve the problem of mechanical and power grid impact. When the scraper head and tail run, power oscillation is easy to occur, that is, the power is not balanced between multiple motors and the power is large and small, which is prone to failure.

[0004] Therefore, the utility model provides a mine explosion-proof water circulation type high-voltage combined frequency converter which has small land occupation, is not prone to failure, and has good heat dissipation effect. UTILITY MODEL CONTENT

[0005] The utility model relates to the technical field of mining equipment, more particularly to a mine explosion-proof water circulation type high-voltage combined frequency converter.

[0006] The utility model provides a mine explosion -proof water circulation formula high pressure combined frequency converter, including explosion -proof casing 1, it is characterized in office that: the left side of explosion -proof casing 1 is equipped with explosion -proof incoming line mouth 2, the right side of explosion -proof casing 1 is equipped with explosion -proof outgoing line mouth 3, and the rear side of explosion -proof casing 1 is equipped with a plurality of water cooling unit installation mouth 8 at intervals, is equipped with water cooling unit 7 in every water cooling unit installation mouth 8, is equipped with a plurality of baffle in explosion -proof casing 1, and the internal space of explosion -proof casing 1 is divided into main cavity 4, control cavity 5, secondary monitoring cavity 6 by a plurality of baffle, a plurality of frequency converter control units 41 are equipped with in the main cavity 4 at intervals, and frequency converter control unit 41 is used to provide soft start for external scraper machine equipment, and total control unit is equipped in control cavity 5, and total control unit is used to control total circuit, and auxiliary detection unit is equipped in secondary monitoring cavity 6, and auxiliary detection unit is used to monitor total circuit, and frequency converter control unit 41, auxiliary detection unit and total control unit are electrically connected, and every frequency converter control unit 41 corresponds a water cooling unit 7, and water cooling unit 7 includes water cooling plate assembly 71, explosion -proof board 72, water inlet pipe, water outlet pipe, and is equipped with explosion -proof board 72 on the outside of opening, and is fixedly connected with explosion -proof casing 1 through first locking piece around explosion -proof board 72, and is equipped with water cooling plate assembly 71 in the inboard of explosion -proof board 72, and is fixedly connected with explosion -proof board 72 through second locking piece in one end of water cooling plate assembly 71, and is fixedly connected with frequency converter control unit 41 through third locking piece in the other end of water cooling plate assembly 71, and is welded with water inlet interface 711, water outlet interface 712 respectively in the output end and input end of water cooling plate assembly 71, and water inlet interface 711 is connected with external circulating water supply equipment through water inlet pipe, and water outlet interface 712 is connected with external circulating water supply equipment through water outlet pipe.

[0007] Further, the water cooling plate assembly 71 includes a first fixed plate 73, a first water cooling plate 74, the first fixed plate 73 is fixedly connected with the explosion -proof board 72 through the second locking piece in one end, the first fixed plate 73 is equipped with the first water inlet channel 731 in the upper side, the first water inlet channel 731 is welded with the water inlet interface 711 close to the explosion -proof board 72, the first fixed plate 73 is equipped with the first water outlet channel 732 in the lower side, the first water outlet channel 732 is welded with the water outlet interface 712 close to the explosion -proof board 72, the first water cooling plate 74 is equipped with the circulating cooling channel 741, the output end of the first water inlet channel 731 is connected with the input end of the circulating cooling channel 741, and the output end of the circulating cooling channel 741 is connected with the input end of the first water outlet channel 732.

[0008] Further, the circulating cooling channel 741 is provided with an S-shaped loop, and water in the channel can be automatically circulated and discharged by gravity.

[0009] Further, the first water inlet channel 731 and the first water outlet channel 732 have consistent pipe diameters, and the pipe diameters of the first water inlet channel 731 and the first water outlet channel 732 are greater than the pipe diameter of the circulating cooling channel 741, so that the circulating water efficiency is improved, and the heat dissipation efficiency is improved.

[0010] Further, the water inlet interface 711 and the water inlet pipe, and the water outlet interface 712 and the water outlet pipe are all threadedly connected.

[0011] Further, the water inlet pipe is further sequentially provided with a Y-shaped filter and an electromagnetic valve, the Y-shaped filter is used for preliminarily filtering impurities of input water, and the electromagnetic valve is used for controlling water inlet quantity.

[0012] In some embodiments, the frequency converter control unit 41 comprises a fixed platform 411, a rack 412, a frequency converter and a first contactor, a plurality of fixed platforms 411 are arranged in the main cavity 4, a sliding guide groove is arranged above each fixed platform 411, pulleys are arranged on both sides below the rack 412, the rack 412 is connected with the sliding guide groove through the pulleys, and the rack 412 is sequentially provided with the first contactor and the frequency converter above.

[0013] Further, adjacent frequency converter control units 41 are arranged in parallel, when one frequency converter fails, the corresponding first contactor is opened, and the normal operation of the overall circuit is protected.

[0014] In some embodiments, a plurality of quick-opening doors 9 are arranged on the front side of the explosion-proof shell 1, a plurality of first maintenance doors 10 are arranged on the upper side of the rear side of the explosion-proof shell 1, a plurality of second maintenance doors 11 are arranged on the lower side of the rear side of the explosion-proof shell 1, the first maintenance door 10 and the second maintenance door 11 are hingedly connected with the shell through a hinge 12, and the first maintenance door 10 and the second maintenance door 11 are fixedly connected with the shell through a fourth locking member around.

[0015] In some embodiments, each frequency converter control unit 41 is further connected with a diode feedback unit 13, and the diode feedback unit 13 controls the opening and closing of a diode to control the on-off of the frequency converter control unit 41.

[0016] The utility model discloses a kind of mine explosion-proof water circulation type high-voltage combination frequency converters, each frequency converter control unit 41 corresponds a water cooling unit 7, circulation cooling channel 741 is S type loop setting, water in channel can be automatically circulated and discharged by gravity, prevent water from accumulating in channel to make dew drop damage frequency converter control unit, prone to failure, unfasten second locking member to be able to remove frequency converter control unit from explosion-proof cabinet body for easy maintenance, improve maintenance convenience;Adjacent frequency converter control units 41 are arranged in parallel, when one frequency converter fails, the corresponding first contactor is opened, and the normal operation of the overall circuit is protected, to ensure use efficiency;Each chamber is combination type setting, to reduce floor area. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure diagram of the utility model of a kind of mine explosion-proof water circulation type high-voltage combination frequency converter.

[0018] Figure 2 It is a structural schematic view of a mine explosion-proof water circulating high-voltage combined frequency converter of the application.

[0019] Figure 3 It is a structural schematic view of a mine explosion-proof water circulating high-voltage combined frequency converter of the application.

[0020] Figure 4 It is a structural schematic view of a water cooling unit and a frequency converter control unit connection of a mine explosion-proof water circulating high-voltage combined frequency converter of the application.

[0021] Figure 5 It is a sectional view of a water cooling unit of a mine explosion-proof water circulating high-voltage combined frequency converter of the application.

[0022] Main element symbol explanation

[0023] Explosion-proof shell 1, explosion-proof incoming line port 2, explosion-proof outgoing line port 3, main cavity 4, frequency converter control unit 41, fixed platform 411, rack 412, control cavity 5, secondary monitoring cavity 6, water cooling unit 7, water cooling plate assembly 71, water inlet interface 711, water outlet interface 712, explosion-proof plate 72, first fixed plate 73, first water inlet passage 731, first water outlet passage 732, first water cooling plate 74, circulating cooling passage 741, water cooling unit mounting port 8, quick opening door 9, first maintenance door 10, second maintenance door 11, hinged member 12, diode feedback unit 13.

[0024] The following specific embodiments will further illustrate the application in conjunction with the above-mentioned drawings. Specific embodiments

[0025] The following examples are described to assist in the understanding of the application, the examples are not and should not be interpreted as limiting the scope of protection of the application.

[0026] In the following description, those skilled in the art will recognize that components can be described as separate functional units (which can include sub-units), but those skilled in the art will recognize that various components or portions thereof can be divided into separate components, or can be integrated together (including integrated within a single system or component).

[0027] At the same time, the connection between the components or systems is not intended to be limited to direct connection, on the contrary, the data between these components can be modified, reformatted, or otherwise changed by intermediate components. In addition, additional or fewer connections can be used. It should also be noted that the terms "coupled", "connected", or "input" should be understood to include direct connections, indirect connections through one or more intermediate devices, and wireless connections.

[0028] Example 1:

[0029] As shown in Figure 1 , it is a structure schematic diagram of a mine explosion-proof water circulating high-voltage combined frequency converter of the application; as shown in Figure 2 , it is a structure schematic diagram of a mine explosion-proof water circulating high-voltage combined frequency converter of the application; as shown in Figure 3 , it is a structure schematic diagram of a mine explosion-proof water circulating high-voltage combined frequency converter of the application; as shown in Figure 4 , it is a structure schematic diagram of a water cooling unit and a frequency converter control unit of a mine explosion-proof water circulating high-voltage combined frequency converter of the application; as shown in Figure 5 , it is a sectional view of a water cooling unit of a mine explosion-proof water circulating high-voltage combined frequency converter of the application.

[0030] A mine explosion-proof water circulating high-voltage combined frequency converter comprises an explosion-proof shell 1, characterized in that: an explosion-proof incoming line port 2 is arranged on the left side of the explosion-proof shell 1, an explosion-proof outgoing line port 3 is arranged on the right side of the explosion-proof shell 1, and a plurality of water cooling unit installation ports 8 are arranged at intervals on the back side of the explosion-proof shell 1, a water cooling unit 7 is arranged in each water cooling unit installation port 8, a plurality of partitions are arranged in the explosion-proof shell 1, and the internal space of the explosion-proof shell 1 is divided into a main cavity 4, a control cavity 5 and a secondary monitoring cavity 6 by the plurality of partitions, a plurality of frequency converter control units 41 are arranged at intervals in the main cavity 4, the frequency converter control units 41 are used to provide soft start for external scraper equipment, a total control unit is arranged in the control cavity 5 and is used to control a total circuit, an auxiliary detection unit is arranged in the secondary monitoring cavity 6 and is used to assist in monitoring the total circuit, the frequency converter control units 41, the auxiliary detection unit and the total control unit are electrically connected, each frequency converter control unit 41 corresponds to a water cooling unit 7, the water cooling unit 7 comprises a water cooling plate assembly 71, an explosion-proof plate 72, a water inlet pipe and a water outlet pipe, the explosion-proof plate 72 is arranged outside the opening, the explosion-proof plate 72 is fixedly connected with the explosion-proof shell 1 through a first locking piece around the explosion-proof plate 72, the water cooling plate assembly 71 is arranged inside the explosion-proof plate 72, one end of the water cooling plate assembly 71 is fixedly connected with the explosion-proof plate 72 through a second locking piece, the other end of the water cooling plate assembly 71 is fixedly connected with the frequency converter control unit 41 through a third locking piece, a water inlet interface 711 and a water outlet interface 712 are respectively welded at the output end and the input end of the water cooling plate assembly 71, the water inlet interface 711 is connected with an external circulating water supply equipment through the water inlet pipe, and the water outlet interface 712 is connected with the external circulating water supply equipment through the water outlet pipe.

[0031] The water cooling plate assembly 71 comprises a first fixed plate 73, a first water cooling plate 74, one end of the first fixed plate 73 is fixedly connected with the explosion-proof plate 72 through a second locking piece, a first water inlet channel 731 is arranged above the first fixed plate 73, a water inlet interface 711 is welded to the explosion-proof plate 72 near the first water inlet channel 731, a first water outlet channel 732 is arranged below the first fixed plate 73, a water outlet interface 712 is welded to the explosion-proof plate 72 near the first water outlet channel 732, a circulating cooling channel 741 is arranged in the first water cooling plate 74, the output end of the first water inlet channel 731 is connected with the input end of the circulating cooling channel 741, and the output end of the circulating cooling channel 741 is connected with the input end of the first water outlet channel 732.

[0032] The circulating cooling channel 741 is provided in an S-shaped loop, and water in the channel can be automatically circulated and discharged by gravity.

[0033] The pipe diameters of the first water inlet channel 731 and the first water outlet channel 732 are consistent, and the pipe diameters of the first water inlet channel 731 and the first water outlet channel 732 are larger than the pipe diameter of the circulating cooling channel 741, so that the circulating water efficiency is improved, and the heat dissipation efficiency is improved.

[0034] The water inlet interface 711 and the water outlet interface 712 are both screw-connected with water inlet pipes and water outlet pipes.

[0035] A Y-shaped filter and an electromagnetic valve are further arranged on the water inlet pipe in sequence, the Y-shaped filter is used for preliminarily filtering impurities in the input water, and the electromagnetic valve is used for controlling the water inlet amount.

[0036] The frequency converter control unit 41 comprises a fixed platform 411, a rack 412, a frequency converter and a first contactor, a plurality of fixed platforms 411 are arranged in the main cavity 4 at intervals, a sliding guide groove is arranged above each fixed platform 411, pulleys are arranged on both sides below the rack 412, the rack 412 is connected with the sliding guide grooves through the pulleys, and the first contactor and the frequency converter are arranged on the rack 412 in sequence.

[0037] Adjacent frequency converter control units 41 are arranged in parallel, when one frequency converter fails, the corresponding first contactor is disconnected, and the normal operation of the overall circuit is protected.

[0038] A plurality of quick-opening doors 9 are arranged on the front side of the explosion-proof shell 1 at intervals, a plurality of first maintenance doors 10 are arranged on the upper side of the rear side of the explosion-proof shell 1 at intervals, a plurality of second maintenance doors 11 are arranged on the lower side of the rear side of the explosion-proof shell 1 at intervals, the first maintenance doors 10 and the second maintenance doors 11 are hingedly connected with the shell through hinge pieces 12 on the side edges, and the first maintenance doors 10 and the second maintenance doors 11 are fixedly connected with the shell through fourth locking pieces around.

[0039] Each frequency converter control unit 41 is also connected with a diode feedback unit 13, which controls the on-off of the frequency converter control unit 41 by controlling the on-off of the diode.

[0040] The utility model discloses a mine explosion -proof water circulation formula high -voltage combination frequency converter, each frequency converter control unit 41 corresponds a water cooling unit 7, and the circulation cooling channel 741 is provided with S type loop, and the water in the channel can be automatically circulated and discharged by gravity, prevents the water from accumulating in the channel and makes that dew drop destroys frequency converter control unit, and it is difficult to appear the fault, and the frequency converter control unit can be removed from the explosion -proof cabinet body and is convenient to overhaul by loosening the second locking spare, improves the convenience of overhaul, and the adjacent frequency converter control unit 41 is parallelly connected, when one frequency converter fails, the corresponding first contactor is disconnected, protects the normal operation of the whole loop, guarantees the use efficiency, and the chambers are combination formula setting, reduces the floor area.

[0041] Although the present application has disclosed a plurality of aspects and embodiments, other aspects and embodiments will be apparent to those skilled in the art, and several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. The aspects and embodiments disclosed in the present application are only used for illustration, and are not intended to limit the present application, and the actual protection scope of the present application is subject to the claims.

Claims

1. A mine-used explosion-proof water circulation type high-voltage combined frequency converter comprising an explosion-proof housing (1), characterized in that: The explosion-proof shell (1) is provided with an explosion-proof incoming line port (2) on the left side, an explosion-proof outgoing line port (3) on the right side, and a plurality of water cooling unit installation ports (8) on the rear side, and each water cooling unit installation port (8) is provided with a water cooling unit (7); a plurality of partitions are arranged in the explosion-proof shell (1), and the partitions divide the internal space of the explosion-proof shell (1) into a main cavity (4), a control cavity (5) and a secondary monitoring cavity (6); a plurality of frequency converter control units (41) are arranged in the main cavity (4) in a spaced manner, and the frequency converter control units (41) are used for providing soft start for external scraper machine equipment; a total control unit is arranged in the control cavity (5) and is used for controlling a total circuit; an auxiliary detection unit is arranged in the secondary monitoring cavity (6) and is used for monitoring the total circuit; the frequency converter control units (41) and the auxiliary detection unit are electrically connected with the total control unit; each frequency converter control unit (41) corresponds to a water cooling unit (7); the water cooling unit (7) comprises a water cooling plate assembly (71), an explosion-proof plate (72), a water inlet pipe and a water outlet pipe; the explosion-proof plate (72) is arranged outside the opening; the explosion-proof plate (72) is fixedly connected with the explosion-proof shell (1) through first locking members around the explosion-proof plate (72); the water cooling plate assembly (71) is arranged inside the explosion-proof plate (72); one end of the water cooling plate assembly (71) is fixedly connected with the explosion-proof plate (72) through second locking members; the other end of the water cooling plate assembly (71) is fixedly connected with the frequency converter control unit (41) through third locking members; a water inlet interface (711) and a water outlet interface (712) are respectively welded at the output end and the input end of the water cooling plate assembly (71); the water inlet interface (711) is connected with external circulating water supply equipment through the water inlet pipe; and the water outlet interface (712) is connected with external circulating water supply equipment through the water outlet pipe.

2. The mine explosion-proof water circulation type high-voltage combined frequency converter according to claim 1, characterized in that: The water cooling plate assembly (71) comprises a first fixed plate (73) and a first water cooling plate (74); one end of the first fixed plate (73) is fixedly connected with the explosion-proof plate (72) through second locking members; a first water inlet channel (731) is arranged above the first fixed plate (73); the water inlet interface (711) is welded to the explosion-proof plate (72) near the first water inlet channel (731); a first water outlet channel (732) is arranged below the first fixed plate (73); the water outlet interface (712) is welded to the explosion-proof plate (72) near the first water outlet channel (732); and a circulating cooling channel (741) is arranged in the first water cooling plate (74); the output end of the first water inlet channel (731) is connected with the input end of the circulating cooling channel (741); and the output end of the circulating cooling channel (741) is connected with the input end of the first water outlet channel (732).

3. The mine explosion-proof water circulation type high-voltage combined frequency converter according to claim 2, characterized in that: The circulating cooling channel (741) is provided in an S-shaped loop, and water in the channel can be automatically circulated and discharged by gravity.

4. The mine explosion-proof water circulation type high-voltage combined frequency converter according to claim 2, characterized in that: The pipe diameters of the first water inlet channel (731) and the first water outlet channel (732) are consistent, and the pipe diameters of the first water inlet channel (731) and the first water outlet channel (732) are greater than the pipe diameter of the circulating cooling channel (741).

5. The mine explosion-proof water circulation type high-voltage combined frequency converter according to claim 2, characterized in that: The water inlet interface (711) and the water inlet pipe, and the water outlet interface (712) and the water outlet pipe are screw-connected.

6. The mine explosion-proof water circulation type high-voltage combined frequency converter according to claim 1, characterized in that: The water inlet pipe is sequentially provided with a Y-shaped filter and an electromagnetic valve.

7. The mine explosion-proof water circulation type high-voltage combined frequency converter according to claim 1, characterized in that: The frequency converter control unit (41) comprises a fixed platform (411), a rack (412), a frequency converter and a first contactor, a plurality of fixed platforms (411) are arranged in the main cavity (4) at intervals, a sliding guide groove is arranged above each fixed platform (411), pulleys are arranged on both sides below the rack (412), the rack (412) is connected with the sliding guide groove through the pulleys, and the rack (412) is sequentially provided with the first contactor and the frequency converter above.

8. The mine explosion-proof water circulation type high-voltage combined frequency converter according to claim 1, characterized in that: The adjacent frequency converter control units (41) are arranged in parallel, the corresponding first contactor is opened when one frequency converter fails, and the normal operation of the overall circuit is protected.

9. The mine explosion-proof water circulation type high-voltage combined frequency converter according to claim 1, characterized in that: A plurality of quick-opening doors (9) are arranged on the front side of the explosion-proof shell (1) at intervals, a plurality of first maintenance doors (10) are arranged on the top of the rear side of the explosion-proof shell (1) at intervals, a plurality of second maintenance doors (11) are arranged on the bottom of the rear side of the explosion-proof shell (1) at intervals, the first maintenance door (10) and the second maintenance door (11) are hingedly connected with the shell through hinge pieces (12) on the side edges, and the first maintenance door (10) and the second maintenance door (11) are fixedly connected with the shell through fourth locking pieces around.

10. The mine explosion-proof water circulation type high-voltage combined frequency converter according to claim 1, characterized in that: Each frequency converter control unit (41) is further connected with a diode feedback unit (13), and the diode feedback unit (13) controls the opening and closing of the diode to control the on-off of the frequency converter control unit (41).

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