High-load mining explosion-proof transformer substation
By designing a buffer chamber and movable block structure for pressure relief, the risk of spontaneous explosion in mine explosion-proof substations was resolved. The use of internal and external threaded cylinder structures to stabilize cables improved the safety and stability of the substation.
Patent Information
- Application Number
- CN202422911639.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-28
AI Technical Summary
Mining explosion-proof substations have a high risk of spontaneous explosion due to internal faults in their sealed structure, and cables are prone to loosening and short circuits during movement.
The design incorporates a buffer chamber and movable block structure for pressure relief, achieving internal air pressure balance through air inlets and outlets; it also employs internal and external threaded cylinder structures to secure cable connections, and utilizes rubber rings to clamp the cables.
This reduces the probability of a substation spontaneously exploding due to excessive internal air pressure and reduces the risk of short circuits caused by cables becoming loose during movement.
Smart Images
Figure CN223599313U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to mobile substation technical field, concretely is a high load mine explosion -proof substation. BACKGROUND
[0002] The essence of the mine explosion -proof substation is power station, and the effect of traditional power station is same, the difference lies in that the mine explosion -proof substation is used in the mine with methane mixed gas and coal dust and has explosion danger, and the substation is usually movable, simultaneously has high -voltage load switch box, can bear the circuit of high load.
[0003] But the existing mine explosion -proof substation when using, due to the shell of explosion -proof substation is all set into explosion -proof structure, and in order to the mixing of external methane gas, usually will be set into sealed and fixed structure, and when the fault such as serious overload, short circuit or insulation damage occurs in the substation, the insulating oil in the substation is decomposed under the action of high temperature, produces a large amount of hydrocarbon mixed gas, makes the temperature and pressure in the substation rise sharply, and due to the internal structure of the substation is sealed, when the internal pressure exceeds the bearing capacity of the substation, the substation is prone to self -explosion, in addition, the existing substation inside when connecting external power cable, usually the cable is led to the switch box at both ends of the substation, then is connected with external cable, due to the external cable when being connected with the wiring in the switch box, needs to pass through the outer wall of switch box, when the substation moves, easily leads to the loosening of cable and wiring in the switch box, leads to the short circuit of substation due to the loosening of cable. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a high load mine explosion -proof substation to solve the problems in the above background.
[0005] To achieve the above object, the utility model provides the following technical scheme: a high load mine explosion -proof substation, including the shell, the top of shell is fixedly connected with the top plate, the middle part of top plate is fixedly connected with the buffer cabin, both sides of buffer cabin are equipped with movable block, one side wall of movable block is fixedly connected with the outer plate, the other side wall of movable block is fixedly connected with the inner plate, the middle part of inner plate is equipped with a plurality of air inlet holes, the bottom of movable block is equipped with a plurality of air outlet holes, both side walls of shell are provided with switch box, one side wall of switch box is fixedly connected with the flange plate, one side wall of flange plate is fixedly connected with the inner thread cylinder, the inner wall of inner thread cylinder is movably connected with the outer thread cylinder, the inner wall of outer thread cylinder is fixedly connected with the rubber ring, the inside of shell is provided with transformer, the bottom of shell is installed with the walking wheel.
[0006] Preferably, the inside of the buffer cabin is communicated with the inside of the shell, and four cross bars are fixedly connected to the inner walls of the buffer cabin.
[0007] Preferably, the outside of the cross bar is movably sleeved with an elastic spring, and the two ends of the elastic spring are fixedly connected to the inner wall of the buffer cabin and the side wall of the inner plate.
[0008] Preferably, the side wall of the inner plate is provided with four round holes, and the inner plate is movably inserted into the cross bar through the round holes.
[0009] Preferably, the movable block is movably inserted into the buffer cabin through the elastic spring and the cross bar, and the side wall of the outer plate is movably connected to the outer wall of the buffer cabin.
[0010] Preferably, the inside of the air inlet hole is communicated with the inside of the air outlet hole.
[0011] Preferably, the outer wall of the outer threaded cylinder, away from the inner threaded cylinder, is fixedly connected with two ear plates, and the inner threaded cylinder is movably screwed into the switch box through the outer threaded cylinder.
[0012] Compared with the prior art, the utility model has the beneficial effects that:
[0013] 1. The high-load mine-used explosion-proof substation can push the movable movable block when the inside of the substation shell is suddenly increased in pressure due to the generation of gas, push the air outlet hole of the movable block out of the buffer cabin, and make the air inlet hole and the air outlet hole communicate the inside and outside pressures of the substation shell, so that the substation can automatically release pressure and reduce the probability of self-explosion of the substation due to excessive internal pressure.
[0014] 2. The high-load mine-used explosion-proof substation can make the outer cable rotate along the threads in the inside of the inner threaded cylinder when passing through the outer wall of the switch box, so that the rubber ring on the inside of the inner threaded cylinder can be tightly gripped with the outer wall of the cable, and the cable is not easy to be loosened at the joint of the outer wall of the switch box when the substation moves, thereby reducing the probability of short circuit of the cable due to movement of the substation. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a whole structure schematic view of the utility model;
[0016] Figure 2 It is a buffer cabin and cross bar structure schematic view of the utility model;
[0017] Figure 3 It is a movable block and inner plate structure schematic view of the utility model;
[0018] Figure 4 The utility model discloses a female thread cylinder and male thread cylinder structure schematic view.
[0019] In the figure: 1, shell, 2, walking wheel, 3, top plate, 4, buffer cabin, 5, outer plate, 6, switch box, 7, flange plate, 8, female thread cylinder, 9, male thread cylinder, 10, rubber ring, 11, telescopic spring, 12, cross bar, 13, inner plate, 14, movable block, 15, air inlet hole, 16, transformer, 17, air outlet hole, 18, round hole, 19, ear plate. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. 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 the other embodiments obtained by the ordinary skill in the art without making creative efforts belong to the protection scope of the utility model.
[0021] In the description of the utility model, it needs to be explained that the directions or position relations indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "another end" and the like are the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as the limitation on the utility model. In addition, the terms "first" and "second" are only for the description purpose, and cannot be understood as indicating or implying the relative importance.
[0022] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood in a broad sense. For example, "connection" can be fixed connection, can be detachable connection, or integrally connected; can be mechanical connection, can be electrical connection; can be directly connected, can be indirectly connected through intermediate medium; can be the communication inside two elements. The specific meanings of the above terms in the utility model can be understood according to the specific circumstances by the ordinary skill in the art.
[0023] As Figures 1 to 4As shown, the high-load mine explosion-proof substation of the embodiment comprises a shell 1, the top end of the shell 1 is fixedly connected with a top plate 3, the middle part of the top plate 3 is fixedly connected with a buffer cabin 4, both sides of the buffer cabin 4 are provided with movable blocks 14, one side wall of the movable block 14 is fixedly connected with an outer plate 5, the other side wall of the movable block 14 is fixedly connected with an inner plate 13, a plurality of air inlet holes 15 are formed in the middle part of the inner plate 13, a plurality of air outlet holes 17 are formed in the bottom end of the movable block 14, both side walls of the shell 1 are provided with switch boxes 6, one side wall of the switch box 6 is fixedly connected with a flange plate 7, one side wall of the flange plate 7 is fixedly connected with an inner threaded cylinder 8, the inner wall of the inner threaded cylinder 8 is movably threadedly connected with an outer threaded cylinder 9, the inner wall of the outer threaded cylinder 9 is fixedly connected with a rubber ring 10, the inside of the shell 1 is provided with a transformer 16, and the bottom end of the shell 1 is provided with traveling wheels 2.
[0024] Specifically, the shell 1, the top plate 3 and the buffer cabin 4 are all made of explosion-proof material, having better explosion-proof performance, the movable block 14 is a cuboid structure, being light in weight and being able to be pushed by the air pressure in the buffer cabin 4, the outer plate 5 serves to increase the contact area between the end of the movable block 14 and the buffer cabin 4, so that the movable block 14 is not easy to slide into the buffer cabin 4, while the sealing performance of the connection between the movable block 14 and the buffer cabin 4 can be maintained, the inner plate 13 serves to realize the connection between the other end of the movable block 14 and the cross rod 12, so that the movable block 14 can be kept in a horizontal state in the buffer cabin 4, thereby facilitating the movable block 14 to be pushed out of the buffer cabin 4 by the air pressure in the subsequent process, the air inlet hole 15 serves to make the air pressure in the buffer cabin 4 be able to pass to the air outlet hole 17, after the movable block 14 slides out of the buffer cabin 4, the air flow entering the air inlet hole 15 can be passed to the outside, so that the air pressure inside and outside the shell 1 of the substation can be kept consistent, thereby reducing the probability of self-explosion of the substation due to excessively high air pressure inside, the threads on the inner wall of the inner threaded cylinder 8 and the threads on the outer wall of the outer threaded cylinder 9 can be engaged with each other, while the length of the outer threaded cylinder 9 is twice the length of the inner threaded cylinder 8, so that the outer threaded cylinder 9 can rotate outward along the inner wall of the inner threaded cylinder 8 and slide out, so that the outer threaded cylinder 9 can be flexibly adjusted according to the position of the external cable, thereby realizing the stable effect on the external cable, the inner diameter of the rubber ring 10 is smaller than the outer diameter of the external cable, so that the outer threaded cylinder 9 can tightly engage with the outer wall of the cable, thereby realizing the clamping and fixing of the outer threaded cylinder 9 on the external cable.
[0025] Further, the inside of the buffer cabin 4 is communicated with the inside of the shell 1, the inside walls of the buffer cabin 4 are both fixedly connected with four cross rods 12, the cross rod 12 serves to stabilize the end of the movable block 14 away from the outer plate 5, so that the movable block 14 can be kept in a horizontal state, thereby facilitating the movable block 14 to slide out of the buffer cabin 4.
[0026] Further, the outer movable sleeve of the cross bar 12 is provided with the telescopic spring 11, both ends of the telescopic spring 11 are fixedly connected with the inner wall of the buffer cabin 4 and the side wall of the inner plate 13 respectively, the telescopic spring 11 can realize the reset of the movable block 14 according to the deformation of itself, when the internal and external pressure of the transformer substation shell 1 is consistent, the movable block 14 can timely slide into the buffer cabin 4, so as to keep the air tightness of the whole shell 1, and avoid the infiltration of external methane gas.
[0027] Further, the inner plate 13 is movably connected with the cross bar 12 through the circular holes 18, the inner diameter of the circular hole 18 is matched with the outer diameter of the cross bar 12, so that the inner plate 13 can slide along the cross bar 12, and the movable block 14 can keep the horizontal state when sliding out or sliding into the buffer cabin 4, thereby increasing the stability of the movable block 14 during sliding.
[0028] Further, the movable block 14 is movably connected with the buffer cabin 4 through the telescopic spring 11 and the cross bar 12, one side wall of the outer plate 5 is movably connected with the outer wall of the buffer cabin 4, the sliding out and sliding into of the movable block 14 from the buffer cabin 4 can realize the change of the position of the gas outlet hole 17, so as to realize the communication between the buffer cabin 4 and the external air pressure.
[0029] Further, the gas generated in the transformer substation shell 1 can be discharged through the gas inlet hole 15 and the gas outlet hole 17, so that the air pressure in the transformer substation can keep constant, thereby reducing the probability of self-explosion of the transformer substation due to excessive internal air pressure.
[0030] Further, the outer wall of the outer threaded cylinder 9 away from the inner threaded cylinder 8 is fixedly connected with two ear plates 19, the inner threaded cylinder 8 is movably screwed with the switch box 6 through the outer threaded cylinder 9, the ear plate 19 is used for facilitating the twisting of the outer threaded cylinder 9 along the inner threaded cylinder 8, thereby facilitating the adjustment of the outer threaded cylinder 9.
[0031] The use method of the embodiment is: when using the high-load mine explosion-proof substation, the substation can be first moved to a suitable position by the walking wheels 2, then the external cable is passed through the outer threaded barrel 9, and connected with the terminal in the switch box 6, when the cable is connected and fixed in the switch box 6 through the flange plate 7, the ear plate 19 at the end of the outer threaded barrel 9 is twisted, so that the outer threaded barrel 9 slides out along the inner wall of the inner threaded barrel 8, and slides outwards along the outer wall of the external cable, when the rubber ring 10 on the inner wall of the outer threaded barrel 9 is tightly attached to the arc-shaped outer wall of the external cable, the twisting of the outer threaded barrel 9 is stopped, at this time the external cable is clamped in the inner part of the outer threaded barrel 9, when the temperature of the transformer 16 in the substation is increased and the pressure is increased, the gas pressure in the substation will be directed to the inside of the buffer cabin 4, when the force generated by the gas pressure is sufficient to push the movable block 14 to slide outwards, the movable block 14 will slide outwards along the buffer cabin 4, at the same time the inner plate 13 will slide along the cross rod 12 and press the extension spring 11, so that the extension spring 11 is compressed, until the gas outlet hole 17 at the bottom end of the movable block 14 is located outside the buffer cabin 4, the gas in the buffer cabin 4 will enter from the gas inlet hole 15, and then be discharged to the outside air pressure from the gas outlet hole 17, when the internal and external air pressures of the buffer cabin 4 are the same, the movable block 14 will be reset under the counterforce generated by the deformation of the extension spring 11, so that the outer plate 5 is reattached to the outer wall of the buffer cabin 4.
[0032] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A high-load explosion-proof substation for mining, comprising an outer casing (1), characterized in that: A top plate (3) is fixedly connected to the top of the outer shell (1), and a buffer chamber (4) is fixedly connected to the middle of the top plate (3). Movable blocks (14) are provided on both sides of the buffer chamber (4). An outer plate (5) is fixedly connected to one side wall of the movable block (14), and an inner plate (13) is fixedly connected to the other side wall of the movable block (14). Multiple air inlets (15) are provided in the middle of the inner plate (13), and multiple air outlets (17) are provided at the bottom of the movable block (14). Switch boxes (6) are provided on both sides of the outer casing (1). A flange plate (7) is fixedly connected to one side wall of the switch box (6). An internal threaded cylinder (8) is fixedly connected to one side wall of the flange plate (7). An external threaded cylinder (9) is movably threaded to the inner wall of the internal threaded cylinder (8). A rubber ring (10) is fixedly connected to the inner wall of the external threaded cylinder (9). A transformer (16) is provided inside the outer casing (1). A traveling wheel (2) is installed at the bottom of the outer casing (1).
2. A high-load explosion-proof substation for mining according to claim 1, characterized in that: The interior of the buffer chamber (4) is connected to the interior of the outer shell (1), and four crossbars (12) are fixedly connected to the inner walls on both sides of the buffer chamber (4).
3. A high-load explosion-proof substation for mining according to claim 2, characterized in that: A telescopic spring (11) is movably sleeved on the outside of the crossbar (12), and the two ends of the telescopic spring (11) are fixedly connected to the inner wall of the buffer chamber (4) and the side wall of the inner plate (13), respectively.
4. A high-load explosion-proof substation for mining according to claim 3, characterized in that: The inner plate (13) has round holes (18) at the four corners of one side wall. The inner plate (13) is movably connected to the crossbar (12) through the round holes (18).
5. A high-load explosion-proof substation for mining according to claim 1, characterized in that: The movable block (14) is movably connected to the buffer chamber (4) through a telescopic spring (11) and a crossbar (12), and one side wall of the outer plate (5) is movably connected to the outer wall of the buffer chamber (4).
6. A high-load explosion-proof substation for mining according to claim 1, characterized in that: The air inlet (15) and the air outlet (17) are internally connected.
7. A high-load explosion-proof substation for mining according to claim 1, characterized in that: Place The outer wall of the externally threaded cylinder (9) away from the internally threaded cylinder (8) is fixedly connected with two lugs (19). The internal threaded cylinder (8) is connected to the switch box (6) via the external threaded cylinder (9) by a movable thread.