High-voltage generator used in emergency power supply vehicle

Abstract

The utility model discloses a high-voltage generator used in an emergency power supply vehicle. The high-voltage generator comprises a generator body installed in a machine shell, an end cover connected to the rear end of the machine shell and a wire outlet box installed on the machine shell. And a pair of brackets are respectively fixed on the back of the shell in tandem. The wire outlet box comprises a bottom plate, a front end plate, a rear end plate, two side plates and a top plate; the cross section of the bottom plate is in a convex shape with the high middle and the two low sides, and a high platform and two low platforms are formed. The two low platforms of the bottom plate are installed on the two pairs of supports, the rear end of the bottom plate is flush with the rear end of the end cover, a wire inlet is formed in the rear portion of the high platform of the bottom plate, and an epoxy plate covers the wire inlet; the top of the front end plate is provided with a bending part with one backward end; correspondingly, the tops of the front end faces of the two side plates are provided with inclined faces corresponding to the bent parts of the front end plates. A stator leading-out wire of the generator firstly passes through the rear end cover and then upwards passes through a cable waterproof joint installed on the epoxy plate to enter the wire outlet box. The overall height of the generator is reduced.

Description

Technical Field

[0001] The utility model relates to a high-voltage generator used in an emergency power supply vehicle. Background Art

[0002] For a 10kV mobile emergency power supply vehicle, its vehicle model itself is a van-type transport vehicle, with special modifications to the carriage structure. A high-voltage generator set and corresponding supporting equipment are installed in the carriage. Due to the limited space inside the vehicle, strict requirements are put forward for the size of the generator set, especially the size of the generator.

[0003] In the traditional generator structure, the outgoing line box is usually located at the tail end of the generator (see Figure 1a ), and various current transformers need to be installed in the outgoing line box. To ensure the high-voltage electrical distance, the height of the outgoing line box is often relatively high, resulting in a relatively large length and height of the generator set. This structure of the generator set is not suitable for the space inside the emergency power supply vehicle. With the development of market demand, the high-voltage generator has gradually changed to a backpack type structure, moving the outgoing line box from the tail end of the generator to the back of the generator, shortening the total length and optimizing the air intake space at the same time. However, the outgoing line box at the back still results in a relatively high overall height (see Figure 1b ).

[0004] Since high-voltage components such as transformers and current transformers need to be installed in the outgoing line box of the high-voltage generator, to meet the requirements of electrical clearance, the size of the outgoing line box is often relatively large. For larger models, there is enough space above the fuselage to place the outgoing line box. For the generator with a power of 1000kW commonly equipped in the emergency power supply vehicle, the fuselage size of the generator in this power range is not very large, and the back space is insufficient. To accommodate the high-voltage components, the size of the outgoing line box will be larger than the fuselage size and will occupy the entire space above the fuselage. In addition, due to the particularly large air filter of the diesel engine in the high-voltage generator set used in the emergency power supply vehicle, which extends towards the side of the generator, and at the same time, an operation space for replacing the air filter is required, resulting in serious interference with the backpack-type outgoing line box. Therefore, it is necessary to reduce the overall height of the generator and reserve enough space at the drive end of the generator to meet the docking with the diesel engine.

[0005] In the traditional backpack-type outgoing line box structure, the bottom plate of the outgoing line box is erected using the brackets on the casing. The bottom plate is used to place various parts, and side plates are fixed around the bottom plate as the outer shell of the outgoing line box. The bottom plate is often made into a large flat plate. Such a design not only facilitates production and manufacturing but also makes it easier to adjust the placement of internal components. However, there is a large space between the bottom of the large flat plate and the two sides of the circular casing that cannot be utilized, and the outgoing line box will also be relatively high. Summary of the Utility Model

[0006] The purpose of the present utility model is to overcome the defects of the prior art and provide a high-voltage generator for use in an emergency power supply vehicle, which reduces the overall height, reduces the height of the outgoing line box, and at the same time has a large space inside the outgoing line box to meet the requirements for installing components such as transformers and instrument transformers with higher heights.

[0007] The purpose of the present utility model is achieved by the following technical solutions: A high-voltage generator for use in an emergency power supply vehicle, including a generator installed in a cylindrical casing and an outgoing line box installed on the casing; a front end cover and a rear end cover are respectively and correspondingly installed at the front end and the rear end of the casing; the high-voltage generator further includes an end cover; wherein,

[0008] A pair of brackets are symmetrically fixed on the back of the casing, one in front and one behind.

[0009] The end cover is cylindrical and installed on the rear end cover. A lead hole is opened at the top of the end cover, an air inlet is opened at the bottom of the end cover, and an air inlet mesh cover is installed at the air inlet; a louver is installed at the rear end of the end cover.

[0010] The outgoing line box is composed of a bottom plate, a front end plate, a rear end plate, two side plates and a top plate; the cross section of the bottom plate is convex with a high middle and low sides, forming a high platform and two low platforms; the two low platforms of the bottom plate are installed on two pairs of brackets, the rear end of the bottom plate is flush with the rear end of the end cover, an inlet is opened at the rear part of the high platform of the bottom plate corresponding to the lead hole on the end cover, an epoxy board is covered in the inlet, several round holes are opened on the epoxy board, and a cable waterproof joint is installed in each round hole; the top of the front end plate has a bent part extending backward; the rear end plate is a straight plate; correspondingly, the tops of the front end faces of the two side plates have inclined surfaces corresponding to the bent part of the front end plate.

[0011] The stator lead wire of the generator is led out from the non-driving end, first passes through the rear end cover, and then passes upward through the cable waterproof joint on the epoxy board installed on the bottom plate of the outgoing line box to enter the outgoing line box.

[0012] In the above-mentioned high-voltage generator for use in an emergency power supply vehicle, shock pads are respectively arranged between the top surfaces of the four brackets and the bottom surface of the bottom plate.

[0013] In the above-mentioned high-voltage generator for use in an emergency power supply vehicle, the high platform and the two low platforms of the bottom plate are respectively transitioned by inclined platforms, and a plurality of transverse reinforcing ribs are arranged at intervals on the bottom surface of the bottom plate.

[0014] The high-voltage generator used in the emergency power supply vehicle described above, wherein, three terminal posts are installed in parallel on a low platform of the outgoing line box, and two transformers are installed in parallel on another low platform; a zero-phase copper bar is installed at the front of the high platform of the outgoing line box, and a first current transformer, a second current transformer and a third current transformer are installed side by side behind the zero-phase copper bar; the first current transformer and the third current transformer are respectively installed on the inclined platforms on both sides of the high platform through pads in one-to-one correspondence; a fourth current transformer is installed behind the middle of the second current transformer, and several wire brackets are installed between the fourth cable transformer and the epoxy board, and the wire brackets are connected to the stator lead wire.

[0015] The high-voltage generator used in the emergency power supply vehicle of the present utility model has the following characteristics:

[0016] 1. The bottom plate of the outgoing line box is made into a convex structure, which not only reduces the overall height of the outgoing line box, but also ensures the electrical distance of the high-voltage components inside the outgoing line box;

[0017] 2. The outgoing line box extends out of the rear end of the machine shell, and an end cover is added at the rear end of the machine shell, which can increase the length of the outgoing line box and enhance the strength of the machine shell;

[0018] 3. The stator lead wire of the generator is led out from the rear end cover and then enters the outgoing line box, avoiding opening a lead hole on the machine shell;

[0019] 4. A bevel structure is made on the top of the outgoing line box at the driving end of the generator, which can avoid interference with the diesel engine while increasing the length of the outgoing line box. Description of the Drawings

[0020] Figure 1a is a side view of a prior art high-voltage generator;

[0021] Figure 1b is a side view of another prior art high-voltage generator;

[0022] Figure 2 is a side view of the high-voltage generator used in the emergency power supply vehicle of the present utility model;

[0023] Figure 3 is a front view of the high-voltage generator used in the emergency power supply vehicle of the present utility model;

[0024] Figure 4 is a three-dimensional exploded view of the end cover in the high-voltage generator of the present utility model;

[0025] Figure 5a is a front view of the bottom plate of the outgoing line box in the high-voltage generator of the present utility model;

[0026] Figure 5bIt is a side view of the bottom plate of the outgoing line box in the high-voltage generator of the present utility model;

[0027] Figure 6 It is a perspective view of the front end plate and the side plate of the outgoing line box in the high-voltage generator of the present utility model;

[0028] Figure 7a It is a side view of the layout of the parts inside the outgoing line box in the high-voltage generator of the present utility model;

[0029] Figure 7b It is a top view of the layout of the parts inside the outgoing line box in the high-voltage generator of the present utility model;

[0030] Figure 8 It is a schematic diagram of the routing of the stator lead wire of the high-voltage generator of the present utility model. Specific embodiments

[0031] The present utility model will be further described below in conjunction with the accompanying drawings.

[0032] Please refer to Figures 2 to 8 , the high-voltage generator used in the emergency power supply vehicle of the present utility model includes a generator installed in the machine housing 1, an end cover 2 connected to the rear end of the machine housing 1, and an outgoing line box 3 installed on the machine housing 1 (see Figure 2 and Figure 3 ).

[0033] The machine housing 1 is cylindrical, and the front end cover 11 and the rear end cover 12 are respectively installed at the front end and the rear end of the machine housing 1; a pair of brackets 10 are symmetrically welded and fixed on both sides of the middle front back and both sides of the rear back of the machine housing 1.

[0034] The end cover 2 is made of a steel plate rolled into a cylindrical shape adapted to the diameter of the machine housing 1, and flange edges are respectively provided at the front and rear ends of the end cover 2. Reinforcing ribs are welded on the inner surface of the end cover 2 to increase the structural strength. The end cover 2 is installed on the rear end cover 12 through the flange edge and bolts at the front end; a lead hole 2a is opened at the top of the end cover 2, an air inlet 2b is opened at the bottom of the end cover 2, and an air inlet mesh cover 21 is installed on the air inlet 2b. The end cover 2 is installed with a louver 22 through the flange edge and bolts at the rear end (see Figure 4 ).

[0035] The outgoing line box 3 is composed of a bottom plate 30, a front end plate 31, a rear end plate 32, two side plates 33 and a top plate 34; the cross section of the bottom plate 30 is convex with the middle high and both sides low, forming a high platform and two low platforms, and the high platform and the two low platforms are respectively transitioned through inclined platforms; a number of transverse reinforcing ribs 300 are spaced on the bottom surface of the bottom plate 30 (see Figure 5a and Figure 5b) The two low platforms of the bottom plate 30 are installed on two pairs of brackets 10. A shock-absorbing pad 1A is respectively arranged between the top surface of each bracket 10 and the bottom surface of the low platform of the bottom plate 30, so that the components in the entire outgoing line box 3 have a good shock-absorbing function relative to the casing 1 of the generator, reducing the influence of the running vibration of the generator on the outgoing line box 3; the rear end of the bottom plate 30 is flush with the rear end of the end cover 2. An inlet port is opened corresponding to the lead hole 2a on the end cover 2 at the rear part of the high platform of the bottom plate 30. An epoxy board 30A covers the inlet port. Several round holes are opened on the epoxy board 30A, and a cable waterproof joint 30B is installed in each round hole; the top of the front end plate 31 has a bent part extending backward, and an arc-shaped groove adapted to the casing 1 is opened in the middle of the bottom surface of the front end plate 31; the rear end plate 32 is a straight plate and an arc-shaped groove adapted to the casing 1 is also opened in the middle of the bottom surface; correspondingly, the tops of the front end faces of the two side plates 33 have inclined surfaces corresponding to the bent part of the front end plate 31; the front ends, rear ends and tops of the two side plates 33 are inwardly flanged, and a plurality of threaded holes are respectively and spacedly opened on each flange for connecting with the front end plate 31, the rear end plate 32 and the top plate 34 (see Figure 6 ).

[0036] Three terminal posts 4 are installed side by side on one low platform of the outgoing line box 3, and two transformers 5 are installed side by side on the other low platform; a zero-phase copper bar 6 is installed at the front part of the high platform of the outgoing line box 3, and a first current transformer 71, a second current transformer 72 and a third current transformer 73 are installed side by side behind the zero-phase copper bar 6; the first current transformer 71 and the third current transformer 73 are respectively installed on the inclined platforms on both sides of the high platform through pads in one-to-one correspondence; a fourth current transformer 74 is installed behind the middle part of the second current transformer 72, and several wire brackets 80 are installed between the fourth cable transformer 74 and the epoxy board 300 (see Figure 7a and Figure 7b ).

[0037] The stator lead wire 8 of the generator is led out from the non-driving end, first passes through the rear end cover 12, and then passes upward through the cable waterproof joint 30B on the epoxy board 30A installed on the bottom plate 30 of the outgoing line box 3 to enter the outgoing line box 3, and the stator lead wire 8 is fixed on the wire bracket 80 (see Figure 8 ).

[0038] Since the usage requirement of the high-voltage generator used in the emergency power supply vehicle is three-phase three-wire system, two single-phase transformers must be used and connected in VV connection for voltage detection. Therefore, two transformers, current transformers and other high-voltage components need to be installed in the outgoing line box. To meet the requirement of electrical clearance, the placement of the two transformers requires a relatively slender space, and the terminal posts on the lead-out wire side of the transformers also require a slender space.

[0039] The utility model utilizes the space between the lower part of the bottom plate 30 of the outgoing line box 3 and both sides of the cylindrical machine shell 1, and makes the bottom plate 30 of the outgoing line box 3 into a convex structure, that is, high in the middle and low on both sides, forming three platforms. The transformer and the terminal post are placed on the lower platforms on both sides, which greatly reduces the height of the outgoing line box 3 while ensuring the electrical distance requirements of the space inside the outgoing line box 3. On the other hand, since there needs to be a certain space at one end of the outgoing line box 3 leading to the diesel engine. After installing two transformers 5 and four current transformers 71-74 required by the customer in the outgoing line box 3, the axial dimension of the entire outgoing line box 3 will be relatively long, and the axial length of the machine shell 1 of the generator is not sufficient. Considering that a PMG (permanent magnet generator) needs to be installed at the tail end of a high-voltage generator, a protrusion will appear at the tail end of the generator itself. Therefore, it is considered to extend the outgoing line box 3 backward, extend it out of the rear end of the machine shell 1, and add a cylindrical end cover 2 at the rear end of the machine shell 1, which can not increase the total length of the generator, but can increase the length of the outgoing line box 3, and at the same time avoid opening holes in the machine shell 1 and enhance the strength of the machine shell 1; the inlet of the outgoing line box 3 is arranged at the rear part of the bottom plate 30, and the stator lead wire 8 is led out from the rear end cover 12 installed at the rear end of the machine shell 1, and then enters the outgoing line box 3 through the inlet on the bottom plate 30, and the end cover 2 covers the stator lead wire 8 at the same time.

[0040] After the outgoing line box 3 is extended in this direction, the space inside the outgoing line box 3 is still relatively tight. Considering the actual state after docking with the diesel engine, there will be no interference at the position close to the lower part of the machine shell 2, and it is also extended in the other direction. At the same time, a slope is made at the top of the front end of the outgoing line box 3 to avoid the diesel engine.

[0041] The high-voltage generator used in the emergency power supply vehicle of the utility model has sufficient space inside the wiring box 2 while meeting the customer's requirements for the external dimensions of the generator, and meets the requirements for installing various components.

[0042] The above embodiments are only for illustrating the utility model, rather than limiting the utility model. Those skilled in the relevant technical fields can also make various transformations or variations without departing from the spirit and scope of the utility model. Therefore, all equivalent technical solutions should also belong to the scope of the utility model and should be defined by each claim.

Claims

1. A high-voltage generator used in an emergency power supply vehicle, comprising a generator installed in a cylindrical casing and an outlet box installed on the casing; a front cover and a rear cover are installed at the front and rear ends of the casing in a one-to-one correspondence; characterized in that: The high voltage generator also includes an end shield; A pair of brackets are symmetrically fixed on the back of the housing, one in front and one in the back; The end shield is cylindrical and mounted on the rear end cover. A lead-in hole is provided at the top of the end shield, and an air inlet is provided at the bottom of the end shield, and an air inlet mesh cover is installed at the air inlet; a shutter is installed at the rear end of the end shield; The outlet box is composed of a bottom plate, a front end plate, a rear end plate, two side plates and a top plate; the cross section of the bottom plate is convex with a high middle and low sides, forming a high platform and two low platforms; the two low platforms of the bottom plate are installed on two pairs of brackets, the rear end of the bottom plate is flush with the rear end of the end cover, and a wire inlet is provided at the rear of the high platform of the bottom plate corresponding to the lead-in hole on the end cover, and the wire inlet is covered with an epoxy board, and a plurality of circular holes are provided on the epoxy board, and a cable waterproof connector is installed in each circular hole; the top of the front end plate has a bent portion with one end facing backwards; the rear end plate is a straight plate; correspondingly, the tops of the front end surfaces of the two side plates have inclined surfaces corresponding to the bent portion of the front end plate; The stator lead wire of the generator is led out from the non-driving end, first passes through the rear end cover, and then passes upward through the cable waterproof connector on the epoxy plate installed on the bottom plate of the outlet box to enter the outlet box.

2. The high-voltage generator used in an emergency power supply vehicle according to claim 1, characterized in that: Shock-absorbing pads are respectively arranged between the top surfaces of the four brackets and the bottom surface of the bottom plate.

3. The high-voltage generator for use in an emergency power supply vehicle according to claim 1, characterized in that: The high platform and the two low platforms of the bottom plate are transitioned through inclined platforms respectively, and a plurality of transverse reinforcing ribs are arranged at intervals on the bottom surface of the bottom plate.

4. The high-voltage generator for use in an emergency power supply vehicle according to claim 1 or 3, characterized in that: Three terminals are installed in parallel on a low platform of the outlet box, and two transformers are installed in parallel on another low platform; a zero-phase copper bus is installed in front of the high platform of the outlet box, and a first current transformer, a second current transformer and a third current transformer are installed in parallel behind the zero-phase copper bus; the first current transformer and the third current transformer are respectively installed on the inclined platforms on both sides of the high platform through pads in a one-to-one correspondence; a fourth current transformer is installed behind the middle of the second current transformer, and several wire brackets are installed between the fourth current transformer and the epoxy board, and the wire brackets are connected to the stator lead wires.

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