A fire-fighting and noise-reduction device for an indoor substation

Abstract

The present invention relates to the field of electric power engineering technology, and in particular to a fire-fighting and noise reduction device for an indoor transformer substation. It includes a transformer room with an opening at the top, and a fire-fighting noise reduction box installed on the top of the transformer room; a transformer is arranged in the transformer room; the fire-fighting noise reduction box is divided into several chambers arranged side by side, and the chambers include a noise reduction chamber and a fire-fighting chamber; a sound-absorbing film is arranged in the noise reduction chamber, and a sound radiation inlet hole for communicating with the inside of the transformer room is opened at the bottom of the noise reduction chamber; a transmission mechanism for driving the fire-fighting noise reduction box to fall off from the top of the transformer room is arranged in the fire-fighting chamber, and a smoke sensor hole for communicating with the inside of the transformer room is opened at the bottom of the fire-fighting chamber. Compared with the prior art, the device in the present invention can realize the fire-fighting and noise reduction functions at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of electric power engineering, and in particular to a fire-fighting and noise-reduction device for an indoor transformer substation. Background Art

[0002] With the rapid development of urban construction, the number of newly built substations in cities continues to increase. In order to reduce the impact of substation noise on the surrounding environment and coordinate with urban environmental planning, new substations are currently generally required to adopt an all-indoor layout design. Compared with outdoor stations, indoor stations occupy a smaller area and are more economical, but at the same time they place higher requirements on the layout of equipment. Due to the particularity of the structure of indoor substation buildings and the operating characteristics of related equipment, substations have strict requirements for fire prevention work, and at the same time, the impact of noise on station staff and residents outside the station must be strictly controlled.

[0003] The existing indoor substations are located in a basically closed indoor space. Fire alarms usually use linear temperature sensing cables, aspirated smoke sensors and infrared detectors. Due to the layout restrictions of the indoor space of the substation, the above devices are difficult to maintain and repair once a failure occurs after the substation is put into operation. Sometimes power outages are required for maintenance, which brings great inconvenience to power supply reliability and residents' electricity use. Summary of the invention

[0004] In order to solve the problems in the above-mentioned background technology, the present invention provides a fire-fighting and noise reduction device for an indoor substation; when a fire occurs in the substation, the fire-fighting and noise-reduction device can be used to extinguish the fire in time and play a role in noise reduction in the low-frequency band.

[0005] The present invention adopts the following technical scheme: a fire-fighting and noise reduction device for an indoor substation, which includes a transformer chamber with an opening at the top, and a fire-fighting noise reduction box installed on the top of the transformer chamber; a transformer is arranged in the transformer chamber; the fire-fighting noise reduction box is divided into a plurality of chambers arranged side by side, and the chambers include a noise reduction chamber and a fire-fighting chamber; wherein a sound-absorbing film sheet is arranged in the noise reduction chamber, and a sound radiation inlet hole for communicating with the interior of the transformer chamber is opened at the bottom of the noise reduction chamber; the transmission mechanism for driving the fire-fighting noise reduction box to fall off from the top of the transformer chamber is arranged in the fire-fighting chamber, and a smoke sensor hole for communicating with the interior of the transformer chamber is opened at the bottom of the fire-fighting chamber.

[0006] Furthermore, the fire noise reduction box is made of a sandstone sound-absorbing board; and the sound-absorbing film sheet is an aluminum oxide film sheet.

[0007] Furthermore, the noise reduction chamber is located in the middle of the fire noise reduction box; two fire chambers are provided, which are respectively provided on the left and right sides of the noise reduction chamber.

[0008] Furthermore, the free end of the transmission mechanism passes through the side wall of the fire noise reduction box and is connected to the fire noise reduction box support frame, and the fixed end of the transmission mechanism is fixedly connected to the side wall of the fire noise reduction box on the same side; and a gap is provided between the fire noise reduction box support frame and the adjacent two side walls of the fire noise reduction box for horizontal movement of the fire noise reduction box support frame, and the inner side of the fire noise reduction box support frame is plug-connected to the fire noise reduction box through a horizontally arranged fixing pin; the outer side of the fire noise reduction box support frame is overlapped and connected to the side wall of the top of the transformer room.

[0009] Furthermore, the cross-sectional shape of the fire noise reduction box support frame is "T"-shaped; square tubes are respectively installed on the opposite side walls of the top of the transformer room, and the outer side of the fire noise reduction box support frame is overlapped and installed on the square tubes.

[0010] Furthermore, an elastic member is sleeved and installed on the fixing pin, and the elastic member is arranged in a gap between the fire noise reduction box support frame and the adjacent two side walls of the fire noise reduction box.

[0011] Furthermore, the transmission mechanism includes a heat-deformed part, a first rack, a second rack, a transmission gear group and a gear group support frame for supporting the transmission gear group; wherein, one end of the heat-deformed part is fixedly connected to the side wall of the fire noise reduction box, and the other end is fixedly connected to the first rack, and the first rack is horizontally arranged; the input end of the transmission gear group is meshingly connected to the first rack, and the output end is meshingly connected to the meshing end of the second rack; the connecting end of the second rack passes through the side wall of the fire noise reduction box and is fixedly connected to the support frame of the fire noise reduction box.

[0012] Furthermore, the heat-deformed member is a magnesium oxide rod, and the magnesium oxide rod is located directly above the smoke sensor hole.

[0013] Furthermore, the transmission gear set includes a main gear and a slave gear for meshing transmission; the main gear is meshingly connected to the first rack, the slave gear is meshingly connected to the meshing end of the second rack, and the number of teeth of the main gear is greater than the number of teeth of the slave gear.

[0014] Furthermore, the gear set support frame includes a first support frame and a second support frame; the first support frame and the second support frame are respectively arranged on the front and rear sides of the first rack.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) The fire-fighting and noise reduction device of an indoor substation in the present invention has two major functions: fire-fighting and noise reduction. The general implementation principle is as follows: Noise reduction principle: The noise generated by the transformer is reflected and refracted inside the transformer room of the indoor substation. The noise enters the noise reduction chamber from the sound radiation entrance hole, causing the vibration of the sound-absorbing film in the noise reduction chamber, thereby reducing the sound wave energy in the noise reduction chamber to a certain extent. When firefighting is required, the smoke in the transformer room increases, and the smoke is transmitted into the fire-fighting chamber. The temperature in the fire-fighting chamber will increase relatively, and some parts in the transmission mechanism will be deformed by heat, causing the movement of the transmission mechanism, thereby driving the fire-fighting noise reduction box to fall off from the top of the transformer room, so that the external fire-fighting fire-fighting materials can enter the transformer room from the top of the transformer room, realizing the fire-fighting fire-fighting function. At the same time, the fire-fighting and noise reduction device has a simple structure and novel design. It effectively solves the problem of difficulty in extinguishing fire after a fire occurs in an indoor substation. At the same time, it can also reduce the noise of the indoor substation, reducing the impact on the staff inside the station and residents outside the station. In addition, the transformer is arranged in the transformer room, and the fire-fighting noise reduction box is arranged on the top of the transformer room, which is separated from the fire-fighting noise reduction box, which is convenient for the subsequent maintenance and inspection of the transformer, and improves the reliability of power supply and the convenience of residents' electricity use.

[0017] 2) A structural design is adopted in which one noise reduction chamber and two fire fighting chambers are set. In this case, the transmission mechanism can be symmetrically arranged in the noise reduction chambers on both sides. The transmission mechanisms on both sides can be deformed by heat, so both sides of the fire fighting noise reduction box can fall off from the top of the transformer room, further enhancing the safety index of the device.

[0018] 3) A transmission mechanism is provided, the working principle of which is as follows: when the smoke in the transformer room increases, the smoke will enter the fire fighting chamber from the smoke sensor hole, causing the temperature in the fire fighting chamber to rise; and the magnesium oxide rod will expand due to the heat, which will push the first rack to move, and drive the second rack to move in the same direction as the first rack through the transmission gear set, thereby driving the noise reduction box support frame connected to the connecting end of the second rack to move in the same direction as the second rack, so that the noise reduction box support frame falls off from the top of the transformer room. Finally, the fire fighting noise reduction box falls off from the top of the transformer room, allowing fire fighting extinguishing materials to enter the transformer room and realize the fire fighting function. The transmission mechanism adopts gear rack transmission, which has stable transmission and high reliability, thereby improving the reliability of the whole equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of a fire protection and noise reduction device for an indoor substation of the present invention and a schematic diagram of the principle of sound radiation propagation and noise reduction in the device;

[0021] Figure 2 It is a schematic diagram of smoke detection and shedding in the fire protection and noise reduction device of the indoor substation of the present invention;

[0022] Figure 3 This is a structural schematic diagram of the fire noise reduction box in the present invention;

[0023] Figure 4 It is a cross-sectional view of the fire noise reduction box structure in the invention;

[0024] Figure 5 This is a cross-sectional view of the fire noise reduction box of the present invention after removing the upper cover;

[0025] Figure 6 for Figure 5 A partial enlarged view of the middle part;

[0026] Figure 7 for Figure 5 The structural diagram of the transmission mechanism;

[0027] Figure 8 This is a schematic diagram of the top structure of the transformer room when a plurality of fire noise reduction boxes are arranged on the top of the transformer room in the present invention;

[0028] In the figure: transformer room 1; fire noise reduction box 2, noise reduction chamber 20, sound-absorbing film 201, sound radiation inlet 202, fire chamber 21, smoke sensor hole 211, transmission mechanism 22, free end 221, fixed end 222, heat-deformed part 223, first rack 224, second rack 225, meshing end 225-1, connecting end 225-2, transmission gear set 226, main gear 226-1, slave gear 226-2, gear set support frame 227, first support frame 227-1, second support frame 227-2; transformer 3; fire noise reduction box support frame 4; fixing pin 5; square tube 6; elastic member 7; gap 8. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0030] The following is combined with Figure 1 To Attachment Figure 8 And specific embodiments discuss the present invention in detail:

[0031] like Figure 1-8 As shown, the present invention provides a fire-fighting and noise reduction device for an indoor substation, which includes a transformer room 1 with an opening at the top, and a fire-fighting noise reduction box 2 installed and covered on the top of the transformer room 1; a transformer 3 is arranged in the transformer room 1; the fire-fighting noise reduction box 2 is divided into a plurality of chambers arranged side by side, and the chambers include a noise reduction chamber 20 and a fire-fighting chamber 21. It should be noted that one or more support rods can be arranged on the top of the transformer room 1, and a plurality of fire-fighting noise reduction boxes 2 can be arranged in an array on the top of the transformer room 1 to form a roof structure of the transformer room 1, such as Figure 8 As shown; at this time, one side of the fire noise reduction box 2 is overlapped and connected to the side wall of the transformer room 1, and the other side is overlapped and connected to the support rod; the present invention does not specifically limit the number of fire noise reduction boxes 2, as long as they can be installed on the top of the transformer room 1.

[0032] Among them, a sound-absorbing film sheet 201 is provided in the noise reduction chamber 20, and a sound radiation inlet hole 202 for communicating with the inside of the transformer chamber 1 is opened at the bottom of the noise reduction chamber 20 to achieve the communication between the noise reduction chamber 20 and the inside of the transformer chamber 1, so as to achieve the purpose of noise reduction and silencing. Specifically, the fire noise reduction box 2 is made of sandstone sound-absorbing board to achieve the function of sound absorption. Of course, the fire noise reduction box 2 can also be made of other materials that can achieve the sound absorption function, and those skilled in the art can design it according to the actual situation. The corresponding sound-absorbing film sheet 201 installed in the noise reduction chamber 20 can be an aluminum oxide film sheet or other forms of film sheets, as long as the silencing function can be achieved; preferably, an aluminum oxide film sheet is used, and this oxide film is thin and porous, and the silencing effect is good. And the aluminum oxide film sheet in the present invention is horizontally arranged in the noise reduction chamber 20, and the cavity of the noise reduction chamber 20 and the aluminum oxide film sheet form a resonance cavity to absorb the low-frequency noise in the substation. It should be noted that the size, location and shape of the sound radiation inlet 202 are not specifically limited in the present invention and all belong to the protection scope of the present invention. In this embodiment, two sound radiation inlet 202 are provided.

[0033] The transmission mechanism 22 for driving the fire noise reduction box 2 to fall off from the top of the transformer chamber 1 is provided in the fire chamber 21, and a smoke sensor hole 211 for communicating with the interior of the transformer chamber 1 is opened at the bottom of the fire chamber 21 to achieve communication between the fire chamber 21 and the interior of the transformer chamber 1; when the temperature inside the transformer chamber 1 rises, the temperature inside the fire chamber 21 will also rise relatively, and some parts of the transmission mechanism 22 will be deformed by the heat, causing the movement of the transmission mechanism 22, thereby driving the fire noise reduction box 2 to fall off from the top of the transformer chamber 1.

[0034] The fire fighting and noise reduction device of an indoor substation in the present invention has two major functions: fire fighting and noise reduction. The general implementation principle is:

[0035] 1) Noise reduction principle: Figure 1 As shown, the noise generated by the transformer 3 is reflected and refracted inside the transformer room 1 of the indoor substation, and the noise enters the noise reduction chamber 20 from the sound radiation inlet 202, causing the sound-absorbing film sheet 201 to vibrate in the noise reduction chamber 20, thereby reducing the sound wave energy in the noise reduction chamber 20 to a certain extent.

[0036] 2) Fire fighting principle: Figure 2 As shown, when firefighting is needed, the smoke in the transformer room 1 increases, and the smoke is transmitted into the firefighting chamber 21, then the temperature in the firefighting chamber 21 will be relatively increased, and some parts in the transmission mechanism 22 will be deformed by the heat, causing the movement of the transmission mechanism 22, thereby driving the firefighting noise reduction box 2 to fall off from the top of the transformer room 1, so that the external firefighting extinguishing material can enter the transformer room 1 from the top of the transformer room 1, thereby realizing the firefighting extinguishing function.

[0037] The fire fighting and noise reduction device has a simple structure and novel design, which effectively solves the problem of difficulty in extinguishing fire after a fire occurs in an indoor substation, and can also reduce the noise of the indoor substation, reducing the impact on the staff in the station and residents outside the station. In addition, the transformer 3 is arranged in the transformer room 1, and the fire fighting noise reduction box 2 is arranged on the top of the transformer room 1, which is separated from the fire fighting noise reduction box 2, which is convenient for the subsequent maintenance and repair of the transformer 3, and improves the reliability of power supply and the convenience of residents' electricity use.

[0038] Furthermore, the number of the noise reduction chamber 20 and the fire fighting chamber 21 of the present invention can be one each; or one noise reduction chamber 20 can be provided, and the noise reduction chamber 20 is provided in the middle of the fire fighting noise reduction box 2, and two corresponding fire fighting chambers 21 are provided, which are respectively provided on the left and right sides of the noise reduction chamber 20. Preferably, a structural design is adopted in which one noise reduction chamber 20 is provided and two fire fighting chambers 21 are provided. In this case, the transmission mechanism 22 can be symmetrically provided in the noise reduction chambers 20 on both sides, and the transmission mechanisms 22 on both sides can be deformed by heat, so both sides of the fire fighting noise reduction box 2 can fall off from the top of the transformer chamber 1, further enhancing the safety index of the device.

[0039] Further, the free end 221 of the transmission mechanism 22 penetrates the side wall of the fire noise reduction box 2 and is connected to the fire noise reduction box support frame 4, and the fixed end 222 of the transmission mechanism 22 is fixedly connected to the side wall of the fire noise reduction box 2 on the same side; the same side here refers to the same side of the transmission mechanism 22. And a gap for the horizontal movement of the fire noise reduction box support frame 4 is provided between the adjacent two side walls of the fire noise reduction box 2, and the inner side of the fire noise reduction box support frame 4 is plug-connected with the fire noise reduction box 2 through a horizontally arranged fixing pin 5; the outer side of the fire noise reduction box support frame 4 is overlapped and connected with the side wall of the top of the transformer chamber 1. When the transmission mechanism 22 is deformed due to heat, the mechanism is caused to transmit, so that the mechanism drives the fire noise reduction box support frame 4 to move in the direction close to the fire noise reduction box 2 at the reserved gap, so that the fire noise reduction box support frame 4 falls off from the top of the transformer chamber 1, and the implementation method is simple and reliable. Specifically, the cross-sectional shape of the fire noise reduction box support frame 4 is "T"-shaped, and can also be an inverted L-shaped, etc. Square tubes 6 are respectively installed on the two opposite side walls of the top of the transformer chamber 1, and the outer side of the fire noise reduction box support frame 4 is overlapped and installed on the square tube 6; the fire noise reduction box support frame 4 is "T"-shaped, connected to the square tube 6, and uses existing standard parts to replace some parts to reduce production and manufacturing costs.

[0040] Furthermore, an elastic member 7 is sleeved and installed on the fixing pin 5, and the elastic member 7 is arranged in a gap 8 between the fire noise reduction box support frame 4 and the adjacent two side walls of the fire noise reduction box 2. In this example, the elastic member 7 is a compression spring, and a compression spring is arranged to effectively buffer the impact force of the fire noise reduction box 2 when the fire noise reduction box support frame 4 moves toward the side wall of the fire noise reduction box 2.

[0041] Furthermore, the transmission mechanism 22 includes a heat-deformed member 223, a first rack 224, a second rack 225, a transmission gear set 226, and a gear set support frame 227 for supporting the transmission gear set 226. In this embodiment, the heat-deformed member 223 is a magnesium oxide rod, and the magnesium oxide rod is located directly above the smoke sensor hole 211. At the same time, one end of the heat-deformed member 22 is fixedly connected to the side wall of the fire noise reduction box 2, and the other end is fixedly connected to the first rack 224, and the first rack 224 is horizontally arranged; the input end of the transmission gear set 226 is meshed with the first rack 224, and the output end is meshed with the meshing end 225-1 of the second rack 225; the connection end 225-2 of the second rack 225 passes through the side wall of the fire noise reduction box 2 and is fixedly connected to the noise reduction box support frame 4. Specifically, the transmission gear set 226 is composed of an even number of gears meshing and connected, and the transmission gear set 226 includes a main gear 226-1 and a slave gear 226-2 of meshing transmission; correspondingly, the main gear 226-1 is meshed and connected with the first rack 224, and the slave gear 226-2 is meshed and connected with the meshing end 225-1 of the second rack 225, and the number of teeth of the main gear 226-1 is greater than the number of teeth of the slave gear 226-2. The structural design of a large gear driving a small gear is adopted to achieve speed increase, achieve amplification of the elongation and deformation of the magnesium oxide rod, pull the noise reduction box support frame 4 to move toward the side close to the fire noise reduction box 2, and realize the detachment of the noise reduction box support frame 4 from the top of the transformer chamber 1. The gear group support frame 227 includes a first support frame 227-1 and a second support frame 227-2; the first support frame 227-1 and the second support frame 227-2 are respectively arranged on the front and rear sides of the first rack 224, while supporting the transmission gear group 227, they also play a role in limiting the forward and backward swinging of the first rack 224 to avoid affecting the overall performance of the equipment.

[0042] The general working principle of the transmission mechanism 22 is as follows: when the smoke in the transformer chamber 1 increases, the smoke will enter the fire chamber 21 from the smoke sensor hole 211, causing the temperature in the fire chamber 21 to rise; and the magnesium oxide rod will expand due to the heat, which will push the first rack 224 to move, and drive the second rack 225 to move in the same direction as the first rack 224 through the transmission gear set 226, thereby driving the noise reduction box support frame 4 connected to the connecting end 225-2 of the second rack 225 to move in the same direction as the second rack 225, so that the noise reduction box support frame 4 falls off from the top of the transformer chamber 1. Finally, the fire noise reduction box 2 falls off from the top of the transformer chamber 1, allowing the fire extinguishing material to enter the interior of the transformer chamber 1, realizing the fire fighting function. The transmission mechanism 22 adopts a gear rack transmission, which has a stable transmission and high reliability, thereby improving the reliability of the whole equipment.

[0043] The present invention is further described above with the aid of specific embodiments. However, it should be understood that the specific description here should not be construed as limiting the essence and scope of the present invention. Various modifications made to the above embodiments by ordinary technicians in the field after reading this specification are all within the scope of protection of the present invention.

Claims

1. A fire-fighting and noise reduction device for an indoor substation, characterized in that: It comprises a transformer room with an opening at the top, and a fire noise reduction box installed on the top of the transformer room; a transformer is arranged in the transformer room; the fire noise reduction box is made of a sandstone sound-absorbing board, and a plurality of chambers arranged side by side are divided in the fire noise reduction box, and the chambers include a noise reduction chamber and a fire chamber; The noise reduction chamber is located in the middle of the fire noise reduction box; a sound-absorbing film is provided in the noise reduction chamber, and a sound radiation inlet hole for communicating with the interior of the transformer chamber is provided at the bottom of the noise reduction chamber; A transmission mechanism for driving the fire noise reduction box to fall off from the top of the transformer chamber is provided in the fire chamber, and a smoke sensor hole for communicating with the interior of the transformer chamber is provided at the bottom of the fire chamber.

2. The fire protection and noise reduction device for indoor substation according to claim 1, characterized in that: The noise-absorbing film sheet is an aluminum oxide film sheet.

3. The fire protection and noise reduction device for indoor substation according to claim 1, characterized in that: The fire fighting chambers are provided with two, which are respectively arranged on the left and right sides of the noise reduction chamber.

4. The fire protection and noise reduction device for indoor substation according to claim 3 is characterized in that: The free end of the transmission mechanism penetrates the side wall of the fire noise reduction box and is connected to the fire noise reduction box support frame, and the fixed end of the transmission mechanism is fixedly connected to the side wall of the fire noise reduction box on the same side; A gap is provided between the fire noise reduction box support frame and the adjacent two side walls of the fire noise reduction box for horizontal movement of the fire noise reduction box support frame; the inner side of the fire noise reduction box support frame is plug-connected with the fire noise reduction box through a horizontally arranged fixing pin; the outer side of the fire noise reduction box support frame is overlapped and connected with the side wall of the top of the transformer room.

5. The fire protection and noise reduction device for indoor substation according to claim 4, characterized in that: The cross-section of the fire noise reduction box support frame is in a "T" shape; Square tubes are respectively installed on the two opposite side walls of the top of the transformer room, and the outer side of the fire noise reduction box support frame is overlapped and installed on the square tubes.

6. The fire protection and noise reduction device for indoor substation according to claim 4, characterized in that: An elastic member is sleeved and installed on the fixing pin, and the elastic member is arranged in a gap between the fire noise reduction box support frame and the adjacent two side walls of the fire noise reduction box.

7. The fire protection and noise reduction device for indoor substation according to claim 4, characterized in that: The transmission mechanism includes a heat-deformed member, a first rack, a second rack, a transmission gear set, and a gear set support frame for supporting the transmission gear set; Among them, one end of the heat-deformed part is fixedly connected to the side wall of the fire noise reduction box, and the other end is fixedly connected to the first rack, and the first rack is horizontally arranged; the input end of the transmission gear set is meshingly connected to the first rack, and the output end is meshingly connected to the meshing end of the second rack; the connecting end of the second rack passes through the side wall of the fire noise reduction box and is fixedly connected to the fire noise reduction box support frame.

8. The fire fighting and noise reduction device for indoor substation according to claim 7, characterized in that: The heat-deformed part is a magnesium oxide rod, and the magnesium oxide rod is located just above the smoke sensor hole.

9. The fire protection and noise reduction device for indoor substation according to claim 7, characterized in that: The transmission gear set includes a main gear and a slave gear for meshing transmission; The main gear is meshed and connected with the first rack, the slave gear is meshed and connected with the meshing end of the second rack, and the number of teeth of the main gear is greater than the number of teeth of the slave gear.

10. The fire fighting and noise reduction device for indoor substation according to claim 7, characterized in that: The gear set support frame includes a first support frame and a second support frame; The first support frame and the second support frame are respectively arranged at the front and rear sides of the first rack.

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