CN215816837U - Dedicated box-type substation system of tunnel construction - Google Patents

Abstract

The utility model belongs to the technical field of substations, and particularly discloses a box-type substation system special for tunnel construction, which comprises a plurality of substation boxes connected in a hand-pulling manner, wherein each substation box comprises a high-voltage box and a low-voltage box, a control door, a circuit breaker and a voltage transformer are arranged in the high-voltage box side by side, a transformer and a control switch cabinet are arranged in the low-voltage box, a cable elbow is arranged at the top of the transformer, a wire outlet is arranged at the bottom of the control switch cabinet, the high-voltage box is connected with the cable elbow through a cable, and the high-voltage box and the low-voltage box are arranged side by side. The box transformer substation is reasonable in structure, convenient to install, convenient to overhaul, firm and reliable in appearance, suitable for tunnel humidity, water and narrow-space environment, and solves the problems of unstable user voltage and low voltage.

Description

Dedicated box-type substation system of tunnel construction

Technical Field

The utility model belongs to the technical field of transformer substations, and particularly relates to a box-type transformer substation system special for tunnel construction.

Background

The box-type transformer substation consists of a high-voltage power distribution cabinet, a power transformer, a low-voltage power distribution cabinet and the like, and is arranged in a metal box body, and three parts of equipment respectively occupy a space and are isolated from each other. The functions of transforming and transmitting the voltage of the power grid can be completed. In the tunnel construction process, because the line is long, the power supply has serious voltage drop in the long-distance transmission process, so that the voltage of the terminal electric equipment is insufficient, and the terminal equipment cannot be started. If adopt the mode of installing traditional case and become to solve this problem, again because traditional case becomes because of the volume is great, unable direct mount is in the construction tunnel.

Therefore, providing a new box-type substation system dedicated for tunnel construction is a technical problem that needs to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provides a box-type substation system special for tunnel construction.

The utility model provides a box-type substation system special for tunnel construction, which comprises a plurality of substation boxes connected in a hand-pulling manner, wherein each substation box comprises a high-voltage box 15 and a low-voltage box 16, a control door 17, a circuit breaker 13 and a voltage transformer 12 are arranged in the high-voltage box 15 side by side, a transformer 18 and a control switch cabinet 21 are arranged in the low-voltage box 16, a cable elbow 20 and a cable elbow 20 are arranged at the top of the transformer 18, a wire outlet 22 is arranged at the bottom of the control switch cabinet 21, the high-voltage box 15 is connected with the cable elbow 20 through a cable, and the high-voltage box 15 and the low-voltage box 16 are arranged side by side.

A further scheme is that a wire inlet and a disconnecting switch 4 are arranged on the control door 17, the wire inlet is connected with a main wire inlet 1, and the disconnecting switch 4, the circuit breaker 13 and the cable elbow head 20 are communicated with the main wire inlet 1.

Further, a first charged display 2 is arranged between the wire inlet and the isolating switch 4.

In a further scheme, a current transformer 3 is arranged in the circuit breaker 13.

The further scheme is that a current mutual inductance meter 7 and a current mutual inductance monitor 8 are further arranged between the transformer 18 and the control switch cabinet 21, the current mutual inductance meter 7 is used for measuring the total power consumption of the transformer substation box body, and the current mutual inductance monitor 8 is used for monitoring real-time current.

The further scheme is that the control switch cabinet 21 comprises a main switch 9 and a plurality of branch switches 10, and the branch switches 10 are connected with electric equipment 11 through conducting wires.

Further, a protective cover 19 is arranged on the outer side of the cable elbow head 20.

In a further scheme, the adjacent transformer substation boxes are connected in a hand-pulling manner through 20KV cables 14.

The further scheme is that the type of the isolating switch 4 is GN19-24KV/630A, the type of the breaker is ZWK32-24KV/630A, the types of the first electrified display 2 and the second electrified display 5 are DXN6-Q, the type of the transformer 18 is S13-250, the type of the master switch is HNM2-800C, and the type of the current mutual inductance meter 7 is DTS 634.

Further, the spacing distance between the adjacent substation boxes is 500-600 m.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the arrangement modes in the box are all arranged in parallel, so that the whole box is in a strip shape, and the height of the box is low, thereby meeting the requirements of unlimited length and limited height of products in the tunnel. In addition, the utility model adopts an ZWK32-24KV/630A type breaker, thereby meeting the use environment of water leakage and moisture in the tunnel. Meanwhile, the switch has the functions of metering, overcurrent quick-break protection of the circuit breaker and remote control operation.

(2) The utility model adopts 20KV incoming line, thus reducing the problem of voltage drop during long-distance transmission.

(3) According to the utility model, the protective cover is arranged on the outer side of the cable elbow head, so that the adaptability of the box transformer substation in severe tunnel conditions is improved, and the service life is prolonged.

(4) The first electrified display and the second electrified display are arranged to monitor the incoming line voltage and the high-voltage transmission voltage respectively, so that the stability of the whole box transformer substation is guaranteed, faults can be quickly confirmed, and timely and accurate maintenance is achieved.

Drawings

The utility model is illustrated and described only by way of example and not by way of limitation in the scope of the utility model as set forth in the following drawings, in which:

FIG. 1: the utility model has a schematic structure;

FIG. 2: a schematic circuit connection diagram inside the transformer substation box body;

FIG. 3: the transformer substation box body is connected with the schematic diagram through a 20KV cable;

in the figure: the intelligent control system comprises a main incoming line 1, a first electrified display 2, a current transformer 3, an isolating switch 4, a second electrified display 5, a transformer 6, a current transformer meter 7, a current transformer monitor 8, a main switch 9, a branch switch 10, electric equipment 11, a voltage transformer 12, a circuit breaker 13, a cable 1420 KV, a high-voltage box body 15, a low-voltage box body 16, a control door 17, a transformer 18, a protective cover 19, a cable elbow 20, a control switch 21 and an outlet 22.

Detailed Description

In order to make the objects, technical solutions, design methods, and advantages of the present invention more apparent, the present invention will be further described in detail by specific embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1 and 2, the utility model provides a box-type substation system special for tunnel construction, which comprises a plurality of substation boxes connected in a hand-pulling manner, wherein each substation box comprises a high-voltage box 15 and a low-voltage box 16, a control door 17, a circuit breaker 13 and a voltage transformer 12 are arranged in the high-voltage box 15 side by side, a transformer 18 and a control switch cabinet 21 are arranged in the low-voltage box 16, a cable elbow 20 is arranged at the top of the transformer 18, the cable elbow 20 is arranged at the bottom of the control switch cabinet 21, an outlet 22 is arranged at the bottom of the high-voltage box 15, the high-voltage box 15 is connected with the cable elbow 20 through a cable, and the high-voltage box 15 and the low-voltage box 16 are arranged side by side.

Specifically, be provided with inlet wire and isolator 4 on the control gate 17, inlet wire department is connected with general inlet wire 1, general inlet wire 1 communicates isolator 4, circuit breaker 13 and cable elbow head 20.

Optionally, a first live display 2 is arranged between the wire inlet and the isolating switch 4 and used for monitoring the wire inlet voltage, so that the working stability of the box transformer substation is ensured.

Optionally, a current transformer 3 is arranged in the circuit breaker 13, so that the volume of the whole box body is further reduced.

Optionally, a current mutual inductance meter 7 and a current mutual inductance monitor 8 are further arranged between the transformer 18 and the control switch cabinet 21, the current mutual inductance meter 7 is used for measuring the total power consumption of the transformer substation box, and the current mutual inductance monitor 8 is used for monitoring real-time current.

Optionally, the control switch cabinet 21 includes a main switch 9 and a plurality of branch switches 10, the branch switches 10 are connected to the power consumption device 11 through a wire, and in this embodiment, two branch switches 10 are provided to control on/off of two branches respectively, so as to facilitate operation.

Optionally, a protective cover 19 is arranged on the outer side of the cable elbow head 20, so that the adaptability of the box transformer substation to severe tunnel conditions is improved, and the service life is prolonged.

Optionally, the adjacent substation boxes are connected by a 20KV cable 14 in a hand-pulling manner. The problem of voltage drop due to long-distance transportation is reduced.

In this embodiment, the model of the isolating switch 4 is GN19-24KV/630A, the model of the breaker is ZWK32-24KV/630A, the models of the first live display 2 and the second live display 5 are DXN6-Q, the model of the transformer 18 is S13-250, the model of the master switch is HNM2-800C, and the model of the current mutual inductance meter 7 is DTS 634. The circuit breaker adopts an ZWK32-24KV/630A type outdoor switch which is not generally used for mounting in a box transformer substation and is used as an outdoor hack lever, so that the switch can meet the requirements of water leakage and damp use environments in tunnels. Meanwhile, the switch has the functions of metering, overcurrent quick-break protection of the circuit breaker and remote control operation, and one switch meets the requirement of matching and using a plurality of common switches.

Optionally, the spacing distance between the adjacent substation boxes is 500-600m, in the field construction, the box transformers can be gradually increased along with the depth of the tunnel construction, and each box transformer has a transformer which can adjust the voltage on site.

The working principle of the utility model is as follows: 24KV voltage is conveyed by a main incoming line, the voltage of the main incoming line can be monitored by a first electrified display, an isolating switch is used for controlling the on-off of the voltage of the whole product, a circuit breaker plays a role in microcomputer protection, emergency tripping can also be realized by remote control, a voltage transformer converts the 24KV voltage into 22V, a second electrified display is used for monitoring whether the outlet end of the circuit breaker is electrified or not, and the stability of three-phase electricity can be determined by a display lamp of a control door. The mutual inductance current meter is used for measuring the total power consumption of the transformer substation box body, the mutual inductance current monitor is used for monitoring real-time current, and the total switch is further connected with a plurality of branch switches, so that the on-off of the electrical equipment of the branches can be controlled conveniently. In order to adapt to the special conditions of the tunnel, when the high-pressure box body and the low-pressure box body are arranged, the high-pressure box body and the low-pressure box body are arranged in a side-by-side mode, namely, the high-pressure box body and the low-pressure box body are made into a low and long shape, and the requirement of height limitation is met.

Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. The utility model provides a dedicated box-type substation system of tunnel construction, a serial communication port, the transformer substation box body of connecting including a plurality of hand-held types, the transformer substation box body includes high-pressure box body (15) and low-voltage box body (16), high-pressure box body (15) are inside to be provided with control gate (17), circuit breaker (13) and voltage transformer (12) side by side, be provided with transformer (18) and control switch cabinet (21) in low-voltage box body (16), transformer (18) top is provided with cable elbow (20), control switch cabinet (21) bottom is provided with outlet (22), high-pressure box body (15) pass through the cable with cable elbow (20) are connected, high-pressure box body (15) and low-voltage box body (16) set up side by side.

2. The box-type substation system special for tunnel construction according to claim 1, characterized in that a control door (17) is provided with a wire inlet and a disconnecting switch (4), the wire inlet is connected with a main wire (1), and the main wire (1) connects the disconnecting switch (4), the circuit breaker (13) and the cable elbow (20).

3. The box-type substation system special for tunnel construction according to claim 2, characterized in that a first live display (2) is arranged between the incoming line and the isolating switch (4).

4. A box substation system dedicated for tunnel construction according to claim 3, characterized in that a current transformer (3) is arranged in the circuit breaker (13).

5. The box-type substation system special for tunnel construction according to claim 4, characterized in that a mutual current meter (7) and a mutual current monitor (8) are further arranged between the transformer (18) and the control switch cabinet (21), wherein the mutual current meter (7) is used for measuring the total power consumption of the substation box body, and the mutual current monitor (8) is used for monitoring real-time current.

6. The box-type substation system special for tunnel construction according to claim 5, characterized in that the control switch cabinet (21) comprises a main switch (9) and a plurality of branch switches (10), and the branch switches (10) are connected with electric equipment (11) through wires.

7. The box-type substation system special for tunnel construction according to claim 6, characterized in that a protective cover (19) is arranged outside the cable elbow head (20).

8. The box-type substation system special for tunnel construction according to claim 7, characterized in that the adjacent substation boxes are connected by a 20KV cable (14) by hand.

9. The box-type substation system special for tunnel construction according to claim 8, wherein the model of the isolating switch (4) is GN19-24KV/630A, the model of the breaker is ZWK32-24KV/630A, the model of the first live display (2) and the model of the second live display (5) are DXN6-Q, the model of the transformer (18) is S13-250, the model of the master switch is HNM2-800C, and the model of the current mutual induction meter (7) is DTS 634.

10. The box-type substation system special for tunnel construction as claimed in claim 9, wherein the spacing distance between adjacent substation boxes is 500-600 m.

Images