CN207426514U - A kind of box-type substation - Google Patents

Abstract

A kind of box-type substation, become main body including case, case, which becomes below main body, is provided with the first air inlet, the case becomes main body wall and is provided with the second air inlet, case, which becomes above main body, is provided with head cover, longitudinal hot gas path and horizontal hot gas path are provided on head cover, ventilation strip is provided with above longitudinal hot gas path and horizontal hot gas path, the rectangle air hole of array is opened up on ventilation strip, welded wire fabric on rectangle air hole, the both ends bending of ventilation strip, spaced top cover support is welded with above ventilation strip, the top welding rain-proof head cover of top cover support, the both ends bending of the rain-proof head cover, the width of rain-proof head cover is more than the width of lower section ventilation strip, the bending edges of rain-proof head cover are less than the bending edges of ventilation strip.The utility model has the advantages that：Solve a variety of hidden danger caused by original wind turbine refrigeration, it is cost-effective, using cross-ventilation, realize heat dissipation, do not break down, service life is long.

Description

A box type substation

technical field

The utility model belongs to the field of box-type substations, in particular to a box-type substation.

Background technique

The main heating element of the box-type transformer is the loss of the transformer during operation. These losses will all be converted into heat. Part of the heat will increase the temperature of the transformer itself, and the other part will be dissipated into the surrounding air. All electromagnetic carriers of the transformer are It is a heating element, and the iron core and winding are the most important heating elements. The life of a transformer depends on the life of its insulating medium. Under normal operating conditions, it is mainly the temperature that affects the insulating medium. Long-term high temperature will cause the insulating medium to age. , and gradually lose its electrical resistance.

The current practice of various box transformer manufacturers is: 1. Add a fan on the top of the box transformer, use a temperature sensor to detect the internal temperature, and when the temperature reaches a certain value, start the fan for forced air cooling to solve the temperature rise problem of the transformer; 2. In addition Existing box-type substation shells are mostly processed with a single-layer steel plate structure, which uses the good heat conduction properties of the steel plate to radiate heat outward and combine the forced heat dissipation of the fan.

The defects of the existing treatment methods are: 1. The quality of the fan determines the ventilation result. Once the fan fails, the European-style box substation will lose the function of ventilation and heat dissipation; 2. The quality and performance of the temperature sensor determines the ventilation result. Once the temperature sensor fails, the European-style box substation The ventilation and heat dissipation function is also lost; 3. The quality and performance of the temperature controller determine the ventilation result. Once the temperature controller fails, the European-style box-type transformer will also lose the ventilation and heat dissipation function; 4. The cost of the European-style box-type transformer is obvious after adding a temperature rise control circuit and a fan. Improve; 5. Power distribution equipment requires a service life of 20 years, and the service life of fans is generally less than 10 years, and the probability of damage in the middle is relatively high; 6. The use of fans for heat dissipation also consumes part of the power to drive and other defects; 7. Single-layer Although the steel plate structure has the function of radiation and heat dissipation, it cannot effectively prevent the heat radiation from the high temperature outside air to the inside of the box substation in hot summer.

Contents of the invention

Aiming at the deficiencies in the prior art, the utility model provides a box-type substation to solve the problems that the existing box-type substation has a complex heat dissipation structure, many components to rely on, and a short service life of the components.

The utility model is realized through the following technical solutions.

A box-type substation, comprising a box-type substation body, a first air inlet is provided under the box-type substation body, a second air inlet is provided on the side wall of the box-type substation body, and a A top cover is provided, and the top cover is provided with a longitudinal hot air channel and a horizontal hot air channel, and above the longitudinal hot air channel and the horizontal hot air channel, a ventilation strip is provided, and an array of rectangular ventilation holes is provided on the ventilation strip, Steel wire mesh is welded on the rectangular ventilation hole, the two ends of the ventilation strip are bent, and the roof brackets arranged at intervals are welded on the top of the ventilation strip, and the rainproof roof is welded on the top of the roof bracket. Cover, the two ends of the rainproof top cover are bent, the width of the rainproof top cover is greater than the width of the lower air-permeable strip, and the bending edge of the rainproof top cover is lower than the bending edge of the air-permeable strip . Through the hotter air, the movement of molecules is violent, the ability to diffuse to the surrounding is strong, the density will be relatively small, and it will rise compared with the air with high density, and the rising hot air will flow to the box through the return ventilation of the top cover of the box transformer. Outside the substation shell, cold air is replenished from the bottom of the box substation. The newly incoming cold air is heated by the heat sink of the transformer, then rises in temperature and flows out of the top cover of the box substation, forming an endless natural heat exchange cycle. Completing the inside of the box transformer requires continuous, non-driven, long-term, and stable natural heat exchange activities between the cooling element and the external cold air.

Preferably, the top cover is inclined. The sloped top cover is not easy to collect water.

As a preference, a hole of 1 mm is opened on the steel wire. Small animals can't get in the hole.

Preferably, the plurality of air-permeable strips are fixedly connected by bolts. The air-permeable strips are fixedly connected to each other to prevent one of them from falling alone and causing an impact.

Preferably, the roof bracket is L-shaped and consists of two parts: a horizontal part and a vertical part, the horizontal part is welded to the air-permeable strip, and the vertical part is welded to the rainproof roof. The horizontal part of the lower part of the roof bracket increases the supporting effect on the one hand, and is easy to weld on the other hand.

Compared with the existing technology: it solves all kinds of hidden dangers caused by the original fan cooling, saves costs, uses air convection to realize heat dissipation, does not break down, and has a long service life.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a bottom view of the top cover of the present utility model.

Fig. 3 is a schematic cross-sectional view of the utility model.

Fig. 4 is the enlarged schematic view of I place in Fig. 3 of the present utility model.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described further.

A box-type substation, comprising a box-type substation body, a first air inlet 1 is provided under the box-type substation body, a second air inlet 2 is provided on the side wall of the box-type substation body, and the box-type substation main body A top cover is provided above the top cover, and a longitudinal hot air passage 4 and a horizontal hot air passage 3 are arranged on the top cover, and a ventilation strip 54 is arranged above the vertical hot air passage 4 and the horizontal hot air passage 3, and the ventilation strip 54 An array of rectangular ventilation holes is provided on the top, steel wire mesh 53 is welded on the rectangular ventilation holes, the two ends of the ventilation strip 54 are bent, and top cover brackets 52 arranged at intervals are welded above the ventilation strip 54. The top of the roof bracket 52 is welded with a rainproof roof 51, the two ends of the rainproof roof 51 are bent, and the width of the rainproof roof 51 is greater than the width of the air-permeable strip 54 below. The bending edge of the rainproof roof 51 is lower than the bending edge of the air-permeable strip 54, the roof is inclined, the steel wire mesh 53 is provided with a hole of 1mm, and the plurality of air-permeable strips 54 are fixed by bolts Connection, the roof bracket 52 is L-shaped, consisting of two parts, a horizontal part and a vertical part, the horizontal part is welded with the air-permeable strip 54, and the vertical part is welded with the rainproof roof 51.

By 7 air-permeable strips, the separated 8 top covers are connected together. The air-permeable strips 54 are provided with arrayed rectangular air holes, and the air-permeable strips 54 are welded with steel mesh. The diameter of the holes on the steel mesh is 1mm to prevent small animals from crawling in.

Weld vent strip 54 above longitudinal hot gas channel 4 and transverse hot gas channel 3, weld top cover support 52 on vent strip 54, weld rainproof top cover 51 on top cover support 52, the width of rainproof top cover 51 is greater than the vent strip below 54 width, leaving a large enough gap for air circulation.

There are air intake holes at the bottom of the transformer room and low-voltage room of the box-type transformer. At the same time, there are auxiliary air-intake holes on the lower part of the door panel of the transformer room and the low-voltage room door, and auxiliary air-out holes on the top. When the transformer and low-voltage cabinet in the box-type transformer are working, The transformer and the low-voltage switch start to generate heat when the current passes through a certain resistance, and the heat causes the temperature of the transformer itself and the low-voltage switch itself to rise continuously. When the temperature rises, there is a difference in air temperature. At this time, due to the hotter air, the molecular movement is violent, the ability to diffuse to the surrounding is strong, the density becomes smaller, and gradually rises. The rising hot air continues to reserve horizontal and vertical hot air channels on the top cover. Naturally, as shown in Figure 4, it first passes through the steel wire mesh, and then passes through the gap of the top cover bracket 52 at intervals, so that the internal air pressure of the box transformer shell becomes lower, so that the gas with a relatively low temperature flows from the bottom of the box transformer. The reserved air intake hole is continuously replenished, and then rises and dissipates through the heating of the transformer and the low-voltage switch, forming an infinite cycle, so that the harmful heat generated during the operation of the transformer and the low-voltage switch can be dissipated at any time, forming a natural and uninterrupted heat dissipation process.

The top cover in this embodiment is inclined, and there is no problem of water accumulation in the top cover, and the bending edge of the rainproof top cover 51 is higher than the top cover. At the same time, the full welding process is adopted to ensure that the joints are not leaking, so Rainwater cannot fall into the box change; in addition, the lower edge of the rainproof top cover 51 is lower than the bending edge of the air-permeable strip 54, so that even if the cross wind brings different angles of splashing and cross blowing rainwater, it cannot enter the inside of the box change.

The doors of the transformer room and the low-voltage room are respectively provided with auxiliary air intake and auxiliary air outlet, so that when there is a problem with the general air intake of the box substation foundation, the formation of hot and cold air can also be realized, and there is still effective air convection. The equipment dissipates heat normally without failure.

The scope of protection of the present utility model includes but not limited to the above embodiments, the scope of protection of the present utility model is subject to the claims, and any replacement, deformation, and improvement that are easily thought of by those skilled in the art all fall within this specification. Protection scope of utility model.

Claims (5)

1. a kind of box-type substation becomes main body including case, which is characterized in that the case, which becomes below main body, is provided with the first air inlet Mouthful（1）, the case becomes main body wall and is provided with the second air inlet（2）, the case, which becomes above main body, is provided with head cover, institute Longitudinal hot gas path is provided on the head cover stated（4）With horizontal hot gas path（3）, longitudinal hot gas path（4）And transverse direction Hot gas path（3）Top is provided with ventilation strip（54）, the ventilation strip（54）On open up the rectangle air hole of array, it is described Welded wire fabric on rectangle air hole（53）, the ventilation strip（54）Both ends bending, the ventilation strip（54）Top It is welded with spaced top cover support（52）, the top cover support（52）Top welding rain-proof head cover（51）, it is described Rain-proof head cover（51）Both ends bending, the rain-proof head cover（51）Width be more than lower section ventilation strip（54）Width, it is described Rain-proof head cover（51）Bending edges be less than ventilation strip（54）Bending edges.

2. a kind of box-type substation according to claim 1, which is characterized in that the head cover tilts.

A kind of 3. box-type substation according to claim 1, which is characterized in that the steel wire（53）On offer The hole of 1mm.

A kind of 4. box-type substation according to claim 3, which is characterized in that more ventilation strips（54）Between pass through spiral shell Bolt is fixedly connected.

A kind of 5. box-type substation according to claim 1, which is characterized in that the top cover support（52）It is L-shaped, by Transverse part and the part of vertical portion two are formed, transverse part and ventilation strip（54）Welding, vertical portion and rain-proof head cover（51）Welding.