Explosion-proof safety type permanent magnet synchronous motor for oil field

Abstract

The utility model relates to the technical field of motors, and discloses an explosion-proof safety type permanent magnet synchronous motor for an oil field, which solves the problem that the existing permanent magnet synchronous motor is poor in explosion-proof effect, and comprises a motor body, a junction box is arranged at one end of the side edge of the motor body, and the junction box is composed of a box body, a sealing clamping cover and a wire harness sealing seat. The sealing clamping cover is connected to the end, away from the motor body, of the box body, the wire harness sealing seat is connected to the bottom end of the end, away from the box body, of the sealing clamping cover, a filling inner groove is formed in one end in the sealing clamping cover, and a first sealing ring and a second sealing ring are arranged at the other end in the sealing clamping cover. A first annular corrugated groove is formed in the end, close to the first sealing ring and the second sealing ring, of the inner surface of the sealing clamping cover, a second annular corrugated groove is formed in one end of the outer surface of the junction box, and the first annular corrugated groove and the second annular corrugated groove are both filled with hot-melt sealant; through the permanent magnet synchronous motor, the explosion-proof performance can be improved, and the use safety is further improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor technical field, concretely is a kind of explosion-proof safety type permanent magnet synchronous motor for oil field. BACKGROUND

[0002] Permanent magnet synchronous motor is widely used in oilfield system due to better power density, energy conversion efficiency and temperature rise control characteristics.Oilfield motor needs to have explosion-proof performance to avoid the leakage of flammable and explosive gas such as oil and gas to cause danger, and the sealing performance of the permanent magnet synchronous motor junction box is one of the main factors affecting the explosion-proof effect, the sealing effect of the permanent magnet synchronous motor junction box currently used is limited, and in the use process, if flammable and explosive gas enters the junction box, a large safety accident can be caused, therefore, the present application provides a kind of explosion-proof safety type permanent magnet synchronous motor for oil field. SUMMARY

[0003] In view of the above situation, to overcome the defects of the prior art, the utility model provides a kind of explosion-proof safety type permanent magnet synchronous motor for oil field, effectively solve the problem of poor explosion-proof effect of existing permanent magnet synchronous motor.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of explosion-proof safety type permanent magnet synchronous motor for oil field, including motor body, the one end of the side edge of motor body is fixedly arranged with junction box, junction box is by box, sealing cover and wire harness sealing seat, the one end of box is welded with the outside of motor body Connection, sealing cover is connected to the one end of box away from motor body, wire harness sealing seat is fixedly connected to the bottom end of the one end of sealing cover away from box, the one end of sealing cover interior is provided with filling inner groove, the other end of sealing cover interior is provided with sealing ring one and sealing ring two, the one end of sealing cover inner surface close to sealing ring one and sealing ring two is provided with annular corrugated groove one, the one end of the outer surface of junction box is provided with annular corrugated groove two, the inside of annular corrugated groove one and annular corrugated groove two is filled by hot melt sealant.

[0005] Preferably, the sealing cover and the box are connected by a plurality of screw rods.

[0006] Preferably, the one end of the top of the sealing cover is provided with an injection hole communicated with the annular corrugated groove one and the annular corrugated groove two, and the one end of the top of the sealing cover is provided with a sealing cover matched with the injection hole, and the sealing cover and the sealing cover are connected by a plurality of screw rods.

[0007] Preferably, the sealing cover is internally fixed with positioning ring one and positioning ring two near one end of the sealing ring one, the side edges of the positioning ring one and the positioning ring two are provided with annular clamping grooves, and one side of the sealing ring one is fixed with a plurality of limiting clamping rings matched with the annular clamping grooves.

[0008] Preferably, the wire harness sealing seat is composed of a sealing sleeve, a T-shaped end cover, a conical rubber sealing sleeve and a rubber limiting sleeve, the sealing sleeve is welded to the bottom of one end of the sealing cover, the T-shaped end cover is connected to the sealing sleeve through a plurality of screw rods three, and the conical rubber sealing sleeve and the rubber limiting sleeve are located in the interior of the sealing sleeve and are sleeved on the motor wire harness.

[0009] Compared with the prior art, the utility model has the advantages that:

[0010] (1) In work, the sealing property of the junction box is improved, the flammable and explosive gas is prevented from entering the interior of the junction box to cause deflagration, the safety of the motor during work is improved, the injection hole is provided, the hot melt glue can be injected into the annular corrugated groove one and the annular corrugated groove two, the sealing cover is provided, the injection hole is sealed, the positioning ring one and the positioning ring two are provided, and the sealing ring one is limited and installed.

[0011] (2) The wire harness sealing seat composed of the sealing sleeve, the T-shaped end cover, the conical rubber sealing sleeve and the rubber limiting sleeve is provided, the incoming wire harness is efficiently sealed, the sealing property of the junction box is further improved, and the explosion-proof performance of the motor is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation on the utility model.

[0013] In the drawings:

[0014] Figure 1 It is the structure schematic view of the explosion-proof safety type permanent magnet synchronous motor for the utility model used in the oil field;

[0015] Figure 2 It is the structure schematic view of the junction box of the utility model;

[0016] Figure 3 It is one of the cross-sectional views of the junction box of the utility model;

[0017] Figure 4 It is the second cross-sectional view of the junction box of the utility model;

[0018] Figure 5The utility model discloses sealed cover section view;

[0019] Figure 6 The utility model discloses box body section view;

[0020] Figure 7 The utility model discloses positioning ring no.1, positioning ring no.2 and sealing ring no.1 structure schematic view;

[0021] In the drawing: 1, motor body;2, terminal box;3, box body;4, sealed cover;5, wire harness sealing seat;6, filling inner groove;7, sealing ring no.1;8, sealing ring no.2;9, annular corrugated groove no.1;10, annular corrugated groove no.2;11, hot melt sealant;12, screw rod no.1;13, injection hole;14, sealing cover;15, screw rod no.2;16, positioning ring no.1;17, positioning ring no.2;18, annular clamping groove;19, limit snap ring;20, sealing sleeve;21, T-shaped end cover;22, conical rubber sealing sleeve;23, rubber limit sleeve;24, screw rod no.3. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be apparently and completely described below with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments;Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative work belong to the range of the utility model protection.

[0023] By Figures 1 to 7 Be given, the utility model discloses a kind of explosion-proof safety type permanent magnet synchronous motor for oil field, including motor body 1, the end of one side of motor body 1 is fixedly provided with terminal box 2, terminal box 2 is by box body 3, sealed cover 4 and wire harness sealing seat 5 constitute, one end of box body 3 is welded with the outside of motor body 1 Connection, sealed cover 4 is connected to the end of box body 3 away from motor body 1, wire harness sealing seat 5 is fixedly connected to the bottom end of the end of sealed cover 4 away from box body 3, the end of sealed cover 4 inside is provided with filling inner groove 6, the other end in sealed cover 4 inside is provided with sealing ring no.1 7 and sealing ring no.2 8, the end of sealed cover 4 inner surface close to sealing ring no.1 7 and sealing ring no.2 8 is provided with annular corrugated groove no.1 9, the end of terminal box 2 outer surface is provided with annular corrugated groove no.2 10, the inside of annular corrugated groove no.1 9 and annular corrugated groove no.2 10 is filled by hot melt sealant 11;

[0024] In use, the sealing cover 4 is sleeved on the box body 3, the sealing ring one 7 and the sealing ring two 8 realize the sealing effect, then the hot melt sealant 11 is injected into the annular corrugated groove one 9 and the annular corrugated groove two 10, further improve the sealing of the connection, the hot melt sealant 11 is injected into the inside of the filling inner groove 6 through the wire harness sealing seat 5, the wire harness is sealed, and the overall sealing performance is improved;

[0025] By Figures 2 to 7 It is given that the sealing cover 4 is connected with the box body 3 through a plurality of screw rods one 12, one end of the top of the sealing cover 4 is provided with an injection hole 13 communicated with the annular corrugated groove one 9 and the annular corrugated groove two 10, and the top of the sealing cover 4 is provided with a sealing cover 14 matched with the injection hole 13, the sealing cover 14 is connected with the sealing cover 4 through a plurality of screw rods two 15, and the inside of the sealing cover 4 is fixedly provided with a positioning ring one 16 and a positioning ring two 17 close to one end of the sealing ring one 7, and the side edges of the positioning ring one 16 and the positioning ring two 17 are provided with annular clamping grooves 18, and one side of the sealing ring one 7 is fixedly provided with a plurality of limiting clamping rings 19 matched with the annular clamping grooves 18;

[0026] The screw rod one 12 can stably connect the sealing cover 4 with the box body 3, the injection hole 13 can facilitate the injection of the hot melt sealant 11 into the annular corrugated groove one 9 and the annular corrugated groove two 10, the sealing cover 14 can seal the injection hole 13, and the positioning ring one 16 and the positioning ring two 17 can limit and support the sealing ring one 7, thereby improving the installation convenience and stability of the sealing ring one 7;

[0027] By Figures 2 to 5 It is given that the wire harness sealing seat 5 is composed of a sealing sleeve 20, a T-shaped end cover 21, a conical rubber sealing sleeve 22 and a rubber limiting sleeve 23, the sealing sleeve 20 is welded and connected to the bottom of one end of the sealing cover 4, the T-shaped end cover 21 is connected with the sealing sleeve 20 through a plurality of screw rods three 24, and the conical rubber sealing sleeve 22 and the rubber limiting sleeve 23 are located in the inside of the sealing sleeve 20 and sleeved on the motor wire harness;

[0028] After the sealing cover 4 and the box body 3 are installed, the conical rubber sealing sleeve 22 and the rubber limiting sleeve 23 are inserted into the inside of the sealing sleeve 20 in sequence and sleeved on the wire harness, then the T-shaped end cover 21 is installed, the conical rubber sealing sleeve 22 and the rubber limiting sleeve 23 are pressed by the T-shaped end cover 21, the conical rubber sealing sleeve 22 and the rubber limiting sleeve 23 are nested to press and seal the wire harness, and the sealing effect of the wire harness is improved.

[0029] In work, through the setting has the box body, the sealed cover, the sealing ring one, the sealing ring two, the annular corrugated groove one, the annular corrugated groove two and hot melt sealing glue, can improve the overall sealing of the junction box, avoid the flammable and explosive gas into the inside of the junction box and produce deflagration, improve the safety of motor work, through the setting injection hole, can be convenient to the inside of annular corrugated groove one and annular corrugated groove two injection hot melt glue, through the setting sealing cover, can realize to the injection hole sealing, through the setting positioning ring one and positioning ring two, can realize to sealing ring one limit installation;Through the setting by the sealing sleeve, T type end cover, conical rubber sealing sleeve and rubber limiting sleeve constitute the wire harness sealing seat, can carry in the wire harness and carry out efficient sealing, further improve the sealing of the junction box, improve the explosion-proof performance of motor.

Claims

1. An explosion-proof safety type permanent magnet synchronous motor for oil fields, comprising a motor body (1), characterized in that: One end of the motor body (1) side is fixedly provided with a junction box (2), the junction box (2) is composed of a box body (3), a sealing cover (4) and a wire harness sealing seat (5), one end of the box body (3) is welded with the outside of the motor body (1), the sealing cover (4) is connected to one end of the box body (3) away from the motor body (1), the wire harness sealing seat (5) is fixedly connected to the bottom end of one end of the sealing cover (4) away from the box body (3), one end of the sealing cover (4) is provided with a filling inner groove (6), the other end of the sealing cover (4) is provided with a sealing ring one (7) and a sealing ring two (8), the inner surface of the sealing cover (4) is provided with an annular corrugated groove one (9) near one end of the sealing ring one (7) and the sealing ring two (8), one end of the outer surface of the junction box (2) is provided with an annular corrugated groove two (10), the inner part of the annular corrugated groove one (9) and the annular corrugated groove two (10) are filled with hot melt sealant (11).

2. The explosion-proof safety permanent magnet synchronous motor for oil fields according to claim 1, characterized in that: The sealing cover (4) and the box body (3) are connected by a plurality of screw rods one (12).

3. The explosion-proof safety permanent magnet synchronous motor for oilfields according to claim 1, characterized in that: One end of the top of the sealing cover (4) is provided with an injection hole (13) communicated with the annular corrugated groove one (9) and the annular corrugated groove two (10), one end of the top of the sealing cover (4) is provided with a sealing cover (14) matched with the injection hole (13), the sealing cover (14) and the sealing cover (4) are connected by a plurality of screw rods two (15).

4. The explosion-proof safety permanent magnet synchronous motor for oil fields according to claim 1, characterized in that: One end of the sealing cover (4) is fixedly provided with a positioning ring one (16) and a positioning ring two (17) near the sealing ring one (7), the side of the positioning ring one (16) and the positioning ring two (17) is provided with an annular clamping groove (18), one side of the sealing ring one (7) is fixedly provided with a plurality of limiting clamping rings (19) matched with the annular clamping groove (18).

5. The explosion-proof safety permanent magnet synchronous motor for oilfields according to claim 1, characterized in that: The wire harness sealing seat (5) is composed of a sealing sleeve (20), a T-shaped end cover (21), a conical rubber sealing sleeve (22) and a rubber limiting sleeve (23), the sealing sleeve (20) is welded to the bottom of one end of the sealing cover (4), the T-shaped end cover (21) is connected with the sealing sleeve (20) by a plurality of screw rods three (24), the conical rubber sealing sleeve (22) and the rubber limiting sleeve (23) are located in the inside of the sealing sleeve (20) and are sleeved on the motor wire harness.

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