CN215579937U

CN215579937U - Device for controlling opening and closing of air duct by liquid level

Info

Publication number: CN215579937U
Application number: CN202121802680.0U
Authority: CN
Inventors: 刘�文; 王勇; 刘程; 高超; 支相杰
Original assignee: Origin Electric Co Ltd
Current assignee: Origin Electric Co Ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2022-01-18
Anticipated expiration: 2031-08-04

Abstract

The utility model provides a device for controlling the opening and closing of an air duct by liquid level, which comprises a box body, a fan and the air duct, wherein an action executing mechanism is arranged outside the box body, the action executing mechanism comprises a mounting frame positioned below the air duct, a sealing cover plate hinged on the mounting frame and capable of rotating around the mounting position for covering the air outlet of the air duct, a guide rail arranged on the side surface of the sealing cover plate, a slide block connected on the guide rail in a sliding way, a push rod fixed with the slide block in a hinged way and a floating ball connected at the bottom end of the push rod, the floating ball drives the slide block to slide along the guide rail under the jacking of the buoyancy of the liquid level so as to enable the sealing cover plate to cover the air outlet of the air duct in a rotating way around the mounting position, the utility model can automatically realize the opening and closing range of the air duct according to the height of the liquid level, is used for solving the problem that the ventilation and heat dissipation of an underground box body cannot be compatible with waterproof sealing, and simultaneously reduces the workload of field equipment installation, the buried distribution equipment is developed towards a direction of being safer, more stable and more convenient.

Description

Device for controlling opening and closing of air duct by liquid level

Technical Field

The utility model relates to a device for controlling the opening and closing of an air duct, which is applied to a buried box-type substation, in particular to a device for controlling the opening and closing of the air duct by liquid level.

Background

In the existing separated buried box type transformer substation, the contradiction between the waterproof and heat dissipation problems of the independent fully buried transformer chamber is not solved properly all the time, so that the fully sealed transformer chamber is unsmooth in ventilation and heat dissipation, poor in waterproof performance, incapable of creating a good operating environment for the transformer and seriously influencing the service life and safety performance of the transformer.

In the existing separated buried box-type substation, the waterproof and heat dissipation problems of the independent full buried transformer chamber are exchanged with the outside through the axial flow type exhaust fan in the low-voltage box body, but the separated buried box-type substation and the underground part are connected by adopting a pipeline, so that the separation distance between the underground part and the underground part of the separated buried box-type substation is limited, the ventilation and heat dissipation efficiency in the full buried transformer chamber is also reduced, and the field construction cost and the later maintenance cost are increased.

In the existing separated buried box-type substation, high-voltage and low-voltage cable wells are arranged on the high-voltage and low-voltage sides of the independent fully buried transformer chamber, so that ventilation and heat dissipation can be performed by utilizing cable trenches and the cable wells according to local conditions, when a large amount of accumulated water exists in the cable wells on the two sides of the fully buried transformer chamber, the ventilation and heat dissipation ports on the two sides of the fully buried transformer chamber can be closed by utilizing the buoyancy of the accumulated water, and after the accumulated water is removed, the ventilation and heat dissipation ports on the two sides of the fully buried transformer chamber are reopened under the action of gravity.

The patent a ventilation unit of formula of burying pre-installation transformer substation (notice number is CN201868756U) is including fixing on formula of burying pre-installation transformer substation cavity top and with the barrel that the cavity link up with the top cap that is located the barrel top, barrel and top cap pass through the connecting rod and connect formation ventiduct. Vertical installation goes out from ventilation unit at the top of buried pre-installation transformer substation cavity, the steam in the cavity very easily, therefore the fan only produces a large amount of steam just operation work in the box shell, but still is difficult to accomplish the heat dissipation and waterproof sealing compatible.

Therefore, there is an urgent need for a device for controlling the opening and closing of the air duct by liquid level, which can automatically realize the opening and closing range of the air duct according to the height of the liquid level, is used for solving the problem that the ventilation and heat dissipation of the buried box body and the waterproof sealing can not be compatible, and simultaneously reduces the workload of field equipment installation, so that the buried power distribution equipment is developed towards a safer, more stable and simpler direction.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a device for controlling the opening and closing of an air duct by liquid level, which can automatically realize the opening and closing range of the air duct according to the height of the liquid level, is used for solving the problem that the ventilation, heat dissipation and waterproof sealing of a buried box body cannot be compatible, and simultaneously reduces the workload of field equipment installation, so that buried power distribution equipment develops towards a safer, more stable and simpler direction.

The utility model provides the following technical scheme:

the utility model provides a device by liquid level control wind channel switching, includes box, fan and wind channel, the fan is installed inside sealed box, and realizes the heat exchange with the box is inside through the wind channel intercommunication is external, the box is installed outward and is acted actuating mechanism, act actuating mechanism including be located the wind channel below the mounting bracket, articulate on the mounting bracket and can locate rotatory being used for the lid to close the sealed apron at wind channel air exit, set up guide rail, the sliding connection on the guide rail of sealed apron side, with the articulated fixed ejector pin of slider and the floater of connection in the ejector pin bottom around its installation, the floater gets off drive slider and slides along the guide rail in the jacking of liquid level buoyancy, and then makes sealed apron close at the wind channel air exit around the rotatory lid of installation position.

Preferably, the action executing mechanism further comprises a protective cover which covers the mounting frame, the sealing cover plate, the ejector rod and the floating ball and is arranged outside the box body.

Preferably, the protection casing is established including the cover at the outer last cover shell of mounting bracket and sealed apron and is connected and be used for covering the lower housing of establishing outside ejector pin and floater in last housing below, it keeps away from to go up the housing one side in wind channel is equipped with and distributes and has the louvre, the bottom of lower housing is uncovered, just it has the intercommunicating pore to distribute on the casing of lower housing.

Preferably, the bottom of the upper cover shell is provided with a guide sleeve which is matched outside the ejector rod in a guide mode and used for preventing the ejector rod from swinging along with water waves.

Preferably, the end part of the air outlet of the air duct is provided with a flexible sealing rubber ring which is used for being matched and sealed with the sealing cover plate.

Preferably, the sliding block is connected with the ejector rod through a positioning pin.

Preferably, a filter screen is installed in the air duct.

Preferably, the mounting frame is connected with the bottom end of the sealing cover plate through a stainless steel hinge.

Preferably, the mounting frame is fixed at the bottom of the upper cover casing, an upper clamping block is arranged at one end, close to the box body, of the upper cover casing, a lower clamping block is arranged on the box body, a lower clamping groove used for being matched with the upper clamping block is formed between the lower clamping block and the side wall of the box body, a limiting group used for being pressed at the top end of the upper cover casing is further installed on the box body, and the limiting group comprises a limiting block, a piston rod, a spring, a limiting plate and a support plate; the mounting panel is installed in the box, just the stopper by stretch out in the box to support and press go up the housing top, the end fixing of stopper has spacing limiting plate at the box inboard, be fixed with the direction on the limiting plate and pass the piston rod of mounting panel, just the piston rod overcoat is equipped with to support and presses the spring between mounting panel and limiting plate.

The method for controlling the opening and closing of the air duct by the liquid level adopts the device for controlling the opening and closing of the air duct by the liquid level, and comprises the following steps of:

the protective cover is close to the box body, and the upper clamping block is pressed against the limiting block extending out of the box body under the elastic force of the spring until the protective cover is attached to the outer side of the box body;

the protective cover is moved downwards until the upper clamping block is in limit fit with a lower clamping groove formed by the lower clamping block and the side wall of the box body;

the limiting block can extend out of the box body under the driving of the spring and is pressed against the top side of the protective cover;

when there is a large amount of ponding in the box outside, ponding produces buoyancy through the floater and promotes the ejector pin and rise, and the slider drives sealed apron and rotates under the supporting role of ejector pin, and it is rotatory to the air exit tip with the wind channel to rise to sealed apron until the ponding liquid level, and ponding is higher, and sealing force is big more, moves back when ponding, and sealed apron can open the wind channel again.

The utility model has the beneficial effects that: can control sealed apron rotation angle through the ponding liquid level condition through the installation outside the box, with this control of realizing the not equidimension open-ended in wind channel, when ponding is higher, the angle that the air exit in wind channel closed by sealed apron lid is big more, consequently not only solve buried formula box ventilation cooling and the unable compatible problem of waterproof sealing, the work load of field equipment installation has also been reduced simultaneously, only need promptly with action actuating mechanism integral erection location outside the box can, make buried type distribution equipment towards safer, stable, simple and convenient direction development, it is more energy-concerving and environment-protective.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a structural sectional view of the present invention of embodiment 1;

FIG. 2 is a side view of the action actuator;

FIG. 3 is a side sectional view of the action actuator;

FIG. 4 is a structural sectional view of the present invention of embodiment 2;

fig. 5 is a partially enlarged view of a portion a in fig. 4;

notation in the figure: 1 is the box, 2 is the fan, 3 is the wind channel, 4 is the mounting bracket, 5 is sealed apron, 6 is the guide rail, 7 is the slider, 8 is the ejector pin, 9 is the floater, 10 is last housing, 11 is the lower housing, 12 is the louvre, 13 is the intercommunicating pore, 14 is the sealing rubber circle, 15 is the locating pin, 16 is the filter screen, 17 is the stainless steel hinge, 18 is last fixture block, 19 is lower fixture block, 20 is the stopper, 21 is the piston rod, 22 is the spring, 23 is the limiting plate, 24 is the mounting panel.

Detailed Description

Example 1

With reference to the device shown in fig. 1 to 3, in this embodiment, comprises a box body 1, a fan 2 and an air duct 3, wherein the fan 2 is arranged in the sealed box body 1, and communicate the external world and the inside heat exchange that realizes of box 1 through wind channel 3, box 1 installs the action actuating mechanism outward, the action actuating mechanism is including the mounting bracket 4 that is located wind channel 3 below, articulate on mounting bracket 4 and can be around its installation position rotatory be used for covering close the sealed apron 5 in wind channel 3 air exit department, the guide rail 6 of setting at sealed apron 5 side, sliding connection slider 7 on guide rail 6, ejector pin 8 with slider 7 articulated fixed and the floater 9 of connection in the 8 bottom of ejector pin, floater 9 gets off the drive slider 7 and slides along guide rail 6 in the jacking of liquid level buoyancy, and then make sealed apron 5 close at wind channel 3 air exit around the rotatory lid of installation position.

The action executing mechanism also comprises a protective cover which is covered outside the mounting frame 4, the sealing cover plate 5, the ejector rod 8 and the floating ball 9 and is fixedly arranged outside the box body 1. The protection casing is established including the cover at last housing 10 outside mounting bracket 4 and sealed apron 5 and is connected and be used for covering the lower housing 11 of establishing outside ejector pin 8 and floater 9 in last housing 10 below, and one side that wind channel 3 was kept away from to last housing 10 is equipped with and distributes and have louvre 12, and the bottom of lower housing 11 is uncovered, and distributes on the casing of lower housing 11 and have intercommunicating pore 13.

The bottom of the upper cover shell 10 is provided with a guide sleeve which is matched outside the ejector rod 8 in a guide way and is used for preventing the ejector rod 8 from swinging along with water waves. The end part of the air outlet of the air duct 3 is provided with a flexible sealing rubber ring 14 which is used for being matched and sealed with the sealing cover plate 5. The slide block 7 is connected with the ejector rod 8 through a positioning pin 15. A filter screen 16 is arranged in the air duct 3. The mounting frame 4 is connected with the bottom end of the sealing cover plate 5 through a stainless steel hinge 17.

The working principle of the utility model is as follows: can control sealed apron 5 rotation angles through the ponding liquid level condition through the installation outside box 1, with this control of realizing 3 not equidimension openings in wind channel, when ponding is higher, the angle that the air exit of wind channel 3 was closed by sealed apron 5 lid is big more, consequently not only solve 1 ventilation cooling of buried box and the unable compatible problem of waterproof sealing, the work load of field equipment installation has also been reduced simultaneously, promptly only need with action actuating mechanism integral erection location outside box 1 can, make buried type distribution equipment towards safer, stable, the development of simple and convenient direction, it is more energy-concerving and environment-protective.

Example 2

With reference to fig. 2 to 5, in this embodiment, the difference from embodiment 1 is that an installation frame 4 is fixed at the bottom of an upper housing 10, an upper fixture block 18 is disposed at one end of the upper housing 10 close to a box body 1, a lower fixture block 19 is disposed on the box body 1, a lower fixture groove for matching with the upper fixture block 18 is formed between the lower fixture block 19 and a side wall of the box body 1, a limiting group for pressing the top end of the upper housing 10 is further mounted on the box body 1, and the limiting group includes a limiting block 20, a piston rod 21, a spring 22, a limiting plate 23, and a support plate 24; mounting panel 24 is installed in box 1, and stopper 20 by stretch out in the box 1 to support and press on last housing 10 top, the end fixing of stopper 20 has spacing limiting plate 23 at the box 1 inboard, be fixed with the piston rod 21 that the direction passed mounting panel 24 on the limiting plate 23, and the piston rod 21 overcoat is equipped with to support and presses the spring 22 between mounting panel 24 and limiting plate 23, thereby can realize installation and dismantlement when quick whole change to action actuating mechanism, dismantle the installation comparatively labour saving and time saving.

The method for controlling the opening and closing of the air duct 3 by the liquid level adopts the device for controlling the opening and closing of the air duct 3 by the liquid level, and comprises the following steps:

the protective cover is close to the box body 1, and the upper clamping block 18 is pressed against the elastic force of the spring 22 and extends out of the limiting block 20 of the box body 1 until the protective cover is attached to the outer side of the box body 1;

the protective cover is moved downwards until the upper fixture block 18 is in limit fit with a lower fixture groove formed by the lower fixture block 19 and the side wall of the box body 1;

the limiting block 20 can extend out of the box body 1 and press against the top side of the protective cover under the driving of the spring 22;

when there is a large amount of ponding in the outside of box 1, ponding produces buoyancy through floater 9 and promotes ejector pin 8 and rises, and slider 7 drives sealed apron 5 and rotates under the supporting role of ejector pin 8, and it is rotatory to the air exit tip with wind channel 3 to rise to sealed apron 5 until the ponding liquid level, and ponding is higher, and sealing force is big more, moves back when ponding, and sealed apron 5 can open wind channel 3 again.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a device by liquid level control wind channel switching, a serial communication port, including box, fan and wind channel, the fan is installed inside sealed box, and realizes the heat exchange with the box is inside through the wind channel intercommunication is external, the box is externally installed and is acted actuating mechanism, act actuating mechanism including be located the wind channel below the mounting bracket, articulate on the mounting bracket and can locate rotatory be used for the lid to close the sealed apron in wind channel air exit department around its installation, set up at the guide rail of sealed apron side, sliding connection slider on the guide rail, with the articulated fixed ejector pin of slider and the floater of connection in the ejector pin bottom, the floater gets off the drive slider and slides along the guide rail in the jacking of liquid level buoyancy, and then makes sealed apron close at the wind channel air exit around the rotatory lid of installation position.

2. The device for controlling the opening and closing of the air duct by the liquid level according to claim 1, wherein the action executing mechanism further comprises a protective cover which is covered outside the mounting frame, the sealing cover plate, the ejector rod and the floating ball and is arranged outside the box body.

3. The device of claim 2, wherein the protective cover comprises an upper cover covering the mounting frame and the sealing cover plate and a lower cover connected below the upper cover for covering the ejector rod and the floating ball, heat dissipation holes are distributed on one side of the upper cover away from the air duct, the bottom end of the lower cover is open, and communication holes are distributed on the casing of the lower cover.

4. The device for controlling the opening and closing of the air duct by the liquid level as claimed in claim 3, wherein the bottom of the upper housing is provided with a guide sleeve which is guided and fitted outside the ejector rod and is used for preventing the ejector rod from swinging along with water waves.

5. The device for controlling the opening and closing of the air duct by the liquid level as claimed in claim 1, wherein the end of the air outlet of the air duct is provided with a flexible sealing rubber ring for matching and sealing with the sealing cover plate.

6. The device for controlling the opening and closing of the air duct by the liquid level as claimed in claim 1, wherein the slide block is connected with the ejector rod by a positioning pin.

7. The device for controlling the opening and closing of the air duct by the liquid level as claimed in claim 1, wherein a filter screen is installed in the air duct.

8. The device for controlling the opening and closing of the air duct by the liquid level as claimed in claim 1, wherein the mounting rack is connected with the bottom end of the sealing cover plate by a stainless steel hinge.

9. The device for controlling the opening and closing of the air duct by the liquid level according to claim 3, wherein the mounting frame is fixed at the bottom of an upper cover shell, an upper clamping block is arranged at one end, close to the box body, of the upper cover shell, a lower clamping block is arranged on the box body, a lower clamping groove used for being matched with the upper clamping block is formed between the lower clamping block and the side wall of the box body, a limiting group used for being pressed at the top end of the upper cover shell is further installed on the box body, and the limiting group comprises a limiting block, a piston rod, a spring, a limiting plate and a support plate; the mounting panel is installed in the box, just the stopper by stretch out in the box to support and press go up the housing top, the end fixing of stopper has spacing limiting plate at the box inboard, be fixed with the direction on the limiting plate and pass the piston rod of mounting panel, just the piston rod overcoat is equipped with to support and presses the spring between mounting panel and limiting plate.