CN213527236U - Sound absorption and insulation safety device suitable for Box-in of converter station - Google Patents

Abstract

The utility model discloses a sound absorption and insulation safety device suitable for a Box-in of a converter station, which belongs to the field of power equipment facilities and comprises a safety channel, wherein the safety channel is used for communicating an inner cavity of the Box-in with an outer space of the Box-in; the noise reduction plate is connected with the safety channel in an openable and closable manner; the output end of the opening and closing mechanism is connected with the noise reduction plate; and the two ends of the thermal fuse are respectively connected with the safety channel and the noise reduction plate, and when the temperature at the thermal fuse is higher than a melting point due to internal fire of Box-in, the thermal fuse is fused and the opening and closing mechanism is enabled to open the noise reduction plate. The utility model discloses can reach the effect of more excellent fire control intervention control intensity of a fire, in addition the utility model discloses can remove the back at the conflagration condition and only need change the hot fuse in the thermal fuse, the used repeatedly of being convenient for practices thrift the investment.

Description

Sound absorption and insulation safety device suitable for Box-in of converter station

Technical Field

The utility model relates to a power equipment facility field, concretely relates to inhale sound insulation safety device suitable for current conversion station Box-in.

Background

The converter station is the most important node of the direct current transmission line, and the key of ensuring the safe and stable operation of the converter station is direct current transmission. The converter transformer is one of the most important devices of the converter station, and the converter transformer is used as a main noise source in the converter station, and a corresponding noise reduction scheme needs to be adopted to reduce the factory boundary noise of the converter station, so that an environment-friendly power grid is realized. The sound insulation cover (Box-in) is a noise reduction device specially used for reducing noise of a converter transformer, and is widely applied to noise reduction engineering of current converter transformers due to obvious noise reduction effect. However, when the Box-in is used as a closed device, if the converter transformer is in fire due to failure, the internal pressure of the Box-in is increased instantaneously, explosion can be caused, and irreversible damage can be caused to equipment around the converter transformer, so that great economic loss is generated. The traditional mounting mode of the Box-in top sound insulation board has the following potential safety hazards:

1. after the converter transformer catches fire, the indoor converter transformer can only extinguish fire by means of the self-contained fire extinguishing system, due to the fact that the duration time of the self-contained fire extinguishing system is limited, if the fire extinguishing system is used up, the fire cannot be completely extinguished, and re-combustion of the converter transformer can occur;

2. due to the fixed installation mode adopted by the conventional Box-in sound insulation plate, the Box-in can not be opened after the converter transformer catches fire, so that fire fighting vehicles and fire fighters which arrive at the scene from the periphery can not carry out fire extinguishing operation;

3. after the converter transformer catches fire, the converter transformer is located in a closed Box-in, the fire is difficult to control, personnel cannot enter the converter transformer, and the danger of explosion is possibly caused.

Therefore, on the premise of not influencing the normal operation of the converter transformer and ensuring the noise reduction and sound insulation performance of the Box-in device, necessary fire-fighting measures are added, and the installation mode of the sound insulation plate at the top of the Box-in device of the converter transformer is improved, so that the closed Box-in device can avoid the explosion condition of the converter transformer when the converter transformer is in fire, and the economic loss caused under the emergency condition is reduced to the maximum extent.

The prior patent with the application number of CN201911262697.9 and the name of 'an extra-high voltage commutation emergency fire-fighting structure' discloses a commutation emergency fire-fighting structure: the fire-resistant noise-reducing door comprises a high-temperature-resistant rotating shaft 3, wherein the high-temperature-resistant rotating shaft 3 is installed on a Box-in noise-reducing plate 1, a door closer 2 is installed on the Box-in noise-reducing plate 1, an electromagnet 4 is installed on a Box-in fixed structure frame, and the Box-in noise-reducing plate 1 is electrified and sucked in a non-fire state. When the converter transformer is subjected to an explosion and combustion accident, the electromagnet 4 is powered off and the Box-in noise reduction plate 1 is loosened, the Box-in noise reduction plate 1 is pulled by the door closer 2 to rapidly turn up outwards by taking the high-temperature-resistant rotating shaft 3 as an axis, and the external fire extinguishing is not shielded, so that the defect that the conventional Box-in structure seriously shields the external fire extinguishing operation is overcome, and the development of external rescue is guaranteed.

However, the emergency fire-fighting structure for the converter transformer has the disadvantages that the emergency fire-fighting structure is not provided with a reasonably perfect fire detection device, and whether the reason that the internal temperature of the Box-in rapidly rises in a short time is a fire or not cannot be detected, so that misjudgment is easily caused. Meanwhile, when the converter transformer is on fire, the converter transformer in the Box-in can extinguish fire under a closed state by virtue of a self-contained fire extinguishing system, so that the fire in the converter transformer is prevented from spreading. However, the emergency fire fighting structure opens the noise reduction plate when the converter transformer is in the initial time of fire, so that the fire in the converter transformer is easily spread to the external space of Box-in, and other electronic facilities are detonated, thereby causing greater economic loss.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the unable accurate judgement state of getting on fire of current Box-in structure, cause the interior intensity of a fire of converter transformer to stretch and become the not enough of the barrier of putting out a fire easily, provide one kind and be applicable to converter station Box-in inhale sound insulation safety device, concrete technical scheme is as follows:

a sound absorption and insulation safety device suitable for a converter station Box-in comprises

The safety channel is used for communicating the Box-in inner cavity with the Box-in outer space;

the noise reduction plate is connected with the safety channel in an openable and closable manner;

the output end of the opening and closing mechanism is connected with the noise reduction plate;

and the two ends of the thermal fuse are respectively connected with the safety channel and the noise reduction plate, and when Box-in catches fire inside to cause the temperature at the thermal fuse to be higher than a melting point, the thermal fuse is fused and the opening and closing mechanism is enabled to open the noise reduction plate.

Preferably, the thermal fuse includes a fixed end connected to the safety passage, a movable end connected to the noise reduction plate, and a fuse detachably connected to the fixed end and the movable end, respectively.

Preferably, the fuse has a minimum fusing temperature of 200 ℃, and a fusing time of 25 to 35 seconds.

Preferably, the opening and closing mechanism comprises a first support rod rotatably connected with the noise reduction plate and a second support rod rotatably connected with the Box-in, and the second support rod is sleeved on the outer side of the first support rod and is in sliding connection with the first support rod.

Preferably, an elastic member connected with the first support rod is arranged in the second support rod.

Preferably, the noise reduction plate comprises a plate main body which is rotatably connected with the first support rod, and a sealing ring which is sleeved on the periphery of the plate main body and is hinged with the Box-in.

Preferably, the inner side of the plate body and the inner side of the sealing ring are provided with sound absorbing materials or sound absorbing structures at intervals.

Preferably, a perforated plate structure is arranged at an interval between the inner side of the plate main body and the inner side of the sealing ring.

Preferably, a waterproof belt corresponding to the sealing ring is arranged on the Box-in.

The utility model discloses following beneficial effect has:

the utility model adopts the automatic fusing mode of the thermal fuse to control the opening and closing time of the noise reduction plate when the Box-in catches fire, and when the fire extinguishing system in the Box-in finishes the fire extinguishing operation, the noise reduction plate does not need to be opened too early to spread the fire in the converter; when the fire extinguishing system in the Box-in can not complete the fire extinguishing operation, the noise reduction plate on the Box-in is opened to prevent the Box-in from becoming a fire extinguishing barrier, so that the better fire fighting intervention fire control effect can be achieved.

Additionally the utility model discloses can only need to change the hot fuse in the thermal fuse after the conflagration condition is relieved, the used repeatedly of being convenient for practices thrift the investment, and convenient operation is swift, maintains simply

Drawings

FIG. 1 is a schematic structural view of a sound absorption and insulation safety device of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

fig. 4 is a schematic structural view of an opening and closing mechanism in the sound absorption and insulation safety device adopted by the present invention;

fig. 5 is a schematic structural view of a noise reduction plate in a sound absorption and insulation safety device of the present invention in a closed state.

In the figure: 100-secure channel; 101-a noise reduction plate; 102-an opening and closing mechanism; 103-a thermal fuse; 201-fixed end; 202-mobile end; 203-fuse; 301-a first support bar; 302-a second support bar; 303-an elastic member; 401-a plate body; 402-a seal ring; 403-sound absorbing material; 404-a sound absorbing structure; 405-waterproof tape.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Examples

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The embodiment provides a sound absorption and insulation safety device suitable for a Box-in of a converter station, which comprises a safety channel 100 arranged on a Box-in supporting frame, as shown in fig. 1, wherein the safety channel 100 is in the shape of a cuboid and penetrates through the Box-in supporting frame. The secure channel 100 is used to connect the Box-in lumen with the Box-in exterior space. When an uncontrollable fire disaster happens inside the Box-in supporting frame, a fire fighter can extinguish the fire in the Box-in supporting frame through the safety channel 100, so that the situation that the fire is extinguished only by the fire extinguishing system after the converter transformer in the Box-in supporting frame catches fire is prevented. Due to the limited duration of the self-contained fire suppression system, if the fire suppression system is depleted, it still fails to completely extinguish the fire and re-ignition of the converter transformer may occur.

The Box-in supporting frame is provided with a noise reduction plate 101 for closing a safe passage 100, and the noise reduction plate 101 is connected to the safe passage 100 in an openable and closable manner: when the converter transformer in the Box-in supporting frame normally works, the noise reduction plate 101 is connected with the safety channel 100 in a closed mode and seals the safety channel 100, meanwhile, the working noise of the converter transformer in the Box-in supporting frame is isolated from the external space, and noise pollution caused by the converter transformer is reduced; when uncontrollable fire disaster occurs to the converter transformer in the Box-in supporting frame, the noise reduction plate 101 is opened, so that fire fighters can extinguish the fire in the Box-in supporting frame through the safety channel 100.

The utility model discloses still including the mechanism 102 that opens and shuts that is used for controlling the board 101 state of opening and shutting of making an uproar of falling, the mechanism 102 that opens and shuts the output with fall the board 101 of making an uproar and connect and control falling the board 101 of making an uproar. When the fire extinguishing system in the Box-in supporting frame can not complete the fire extinguishing operation, the opening and closing mechanism 102 opens the noise reduction plate 101 on the Box-in supporting frame to prevent the Box-in from becoming a fire extinguishing barrier, so that the better fire fighting intervention fire control effect can be achieved.

The utility model discloses in mechanism 102 of opening and shutting includes and rotates the first bracing piece 301 of being connected and rotate the second bracing piece 302 of being connected with Box-in braced frame with board 101 of making an uproar falls, second bracing piece 302 cover is established in the first bracing piece 301 outside and with first bracing piece 301 sliding connection. Meanwhile, the second support rod 302 is provided with an elastic member 303 for supporting the first support rod 301, the elastic member 303 in this embodiment is an alloy spring, and in other embodiments, the elastic member 303 may be an elastic element such as a leaf spring, a planar volute spring, a bellows, and the like. When the noise reduction plate 101 is in a closed state relative to the safety channel 100, the first support rod 301 is contracted into the second support rod 302 and compresses the elastic member 303, so that the elastic member 303 accumulates certain elastic energy; until the fuse wire 203 in the thermal fuse 103 is automatically fused, the noise reduction plate 101 cannot be fixed in a limiting manner and the closed state of the noise reduction plate 101 to the safety channel 100 is kept, the elastic piece 303 releases elastic energy accumulated by the elastic piece 303 and supports the first supporting rod 301 out of the second supporting rod 302 to support the noise reduction plate 101, so that when the thermal fuse 103 is automatically fused due to the fact that a fire extinguishing operation cannot be completed by a fire extinguishing system in the Box-in, the opening and closing mechanism 102 can automatically open the noise reduction plate 101 to enable fire fighters to manually intervene to extinguish fire, and explosion caused by combustion in the Box-in due to the fact that the current conversion time is prolonged.

As shown in fig. 2, in the embodiment, the open end of the safety channel 100 is provided with a thermal fuse 103, two ends of the thermal fuse 103 are respectively connected with the safety channel 100 and the noise reduction plate 101, and when a Box-in internal fire causes the temperature at the thermal fuse 103 to be higher than a melting point, the thermal fuse 103 is fused and causes the opening and closing mechanism 102 to open the noise reduction plate 101. The thermal fuse 103 comprises a fixed end 201 fixedly connected with the safety channel 100, a movable end 202 fixedly connected with the noise reduction plate 101, and a fuse 203 detachably connected with the fixed end 201 and the movable end 202 respectively, wherein the fuse 203 limits and fixes the fixed end 201 and the movable end 202 under normal conditions, so that the noise reduction plate 101 can keep a long-time closed state for the safety channel 100 under normal conditions. When uncontrollable fire disasters occur in the converter transformer in the Box-in supporting frame, the temperature of the fuse wire 203 per se is continuously increased, and the fuse wire 203 can be automatically fused when reaching a certain temperature, so that the fused fuse wire 203 can not limit and fix the noise reduction plate 101 and keep the closed state of the noise reduction plate 101 to the safety channel 100. When fuse 203 can't keep falling the closed state of board 101 to escape way 100 of making an uproar, the utility model provides a mechanism 102 that opens and shuts then can open the board 101 of making an uproar that falls on Box-in braced frame, makes the fire fighter can intervene in Box-in braced frame through escape way 100 manual work to carry out the manual work to putting out a fire to the change of flow in Box-in braced frame. Therefore, on the premise of not influencing the normal operation of the converter transformer and ensuring the noise reduction and sound insulation performance of the Box-in device, the mounting mode of the noise reduction plate 101 at the top of the Box-in device of the converter transformer is improved, so that the closed Box-in device can prevent the explosion of the converter transformer caused by a fire disaster when the converter transformer is in the fire disaster, and the economic loss caused under the emergency condition is reduced to the maximum extent.

And simultaneously the utility model discloses in fuse 203's minimum fusing temperature is 200 ℃ to fuse 203's fusing time is 30 seconds, and fuse 203 reaches 200 ℃ and duration is when 30 seconds at its self temperature promptly, and fuse 203 is then automatic fusing. In other embodiments, the worker can adaptively adjust the minimum fusing temperature and the fusing time of the fuse 203 according to the size of the internal space of the Box-in, the number of converter flows in the Box-in, the working temperature and the like. The utility model adopts the automatic fusing mode of the thermal fuse 103 to control the opening and closing time of the noise reduction plate 101 when fire is caught inside the Box-in, and when the fire extinguishing system in the Box-in finishes the fire extinguishing operation, the noise reduction plate 101 does not need to be opened too early to spread the initial fire in the converter; when the fire extinguishing system in the Box-in can not complete the fire extinguishing operation, the noise reduction plate 101 on the Box-in is opened to prevent the Box-in from becoming a fire extinguishing obstacle, so that the better fire fighting intervention fire control effect can be achieved.

As the main equipment or facilities included in the existing converter station are: the existing emergency fire fighting structure is characterized in that a great number of electronic facilities such as a converter valve, a converter transformer, a smoothing reactor, an alternating current switch device, an alternating current filter, an alternating current reactive power compensation device, a direct current switch device, a direct current filter, a control and protection device, an external station grounding pole, a remote communication system and the like are arranged, and a great number of auxiliary electronic equipment, heat dissipation equipment and the like which are electrically connected with the converter transformer are arranged on a Box-in supporting frame, so that the noise reduction plate 101 is opened at the initial time of firing of the converter transformer in the existing emergency fire fighting structure, the fire in the converter transformer is easily spread to the external space of the Box-in, and other electronic facilities are detonated, so that greater economic loss is caused. The utility model adopts the automatic fusing mode of the thermal fuse 103 to control the opening and closing time of the noise reduction plate 101 when fire occurs inside the Box-in, and when the fire extinguishing system in the Box-in finishes the fire extinguishing operation, the noise reduction plate 101 does not need to be opened too early to spread the fire in the converter transformer; therefore, the problem that the existing Box-in emergency fire-fighting structure opens the noise reduction plate 101 at the initial time of the fire of the converter transformer, so that the initial fire in the converter transformer is easily spread to the external space of the Box-in, and other electronic facilities outside the Box-in are detonated, and greater economic loss is caused is solved. Simultaneously the utility model discloses can only need to change the hot fuse 203 in the thermal fuse 103 after the conflagration condition is relieved, then can realize the function of thermal fuse 103, the used repeatedly of being convenient for practices thrift the investment.

The utility model discloses in it includes that the board main part 401 of being connected and cover are established at the sealing ring 402 of board main part 401 four sides week side to fall board 101 of making an uproar including rotating with first bracing piece 301, and wherein the sealing ring 402 of one side is articulated with Box-in braced frame, the cross sectional shape of board main part 401 is square, rectangle or other closed surface, and the interval is equipped with sound absorbing material 403 or sound-absorbing structure 404 in the inside cavity that board main part 401 and sealing ring 402 enclose. The utility model discloses in sound absorbing material 403 is but not limited to aluminium fibre, foamed aluminium, mineral wool, foamed plastic etc, sound absorbing structure 404 is perforated plate or micro-perforated plate sound absorbing structure, slit sound absorbing structure etc. in this embodiment the sound absorbing structure 404 that the inside cavity that board main part 401 and sealing ring 402 enclose adopted is the perforated plate structure. Meanwhile, a waterproof belt 405 corresponding to the shape of the sealing ring 402 is arranged on the Box-in, so that the rainproof effect inside the converter station Box-in is guaranteed.

The utility model adopts the automatic fusing mode of the thermal fuse 103 with certain fusing temperature and fusing duration to control the opening and closing time of the noise reduction plate 101 when fire happens inside the Box-in, and when the fire extinguishing system in the Box-in can complete the fire extinguishing operation, the fire in the converter transformer is not required to be spread by opening the noise reduction plate 101 too early; when the fire extinguishing system in the Box-in can not complete the fire extinguishing operation, the noise reduction plate 101 on the Box-in is opened to prevent the Box-in from becoming a fire extinguishing obstacle, so that the better fire fighting intervention fire control effect can be achieved.

It is to be noted that, in this document, the terms "comprises", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion, so that an article or apparatus including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional like elements in the article or device comprising the element.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (9)

1. A sound absorption and insulation safety device suitable for a converter station Box-in is characterized by comprising

The safety channel (100) is used for communicating the Box-in inner cavity with the Box-in outer space;

a noise reduction plate (101), the noise reduction plate (101) being openably and closably connected with the secure channel (100);

the output end of the opening and closing mechanism (102) is connected with the noise reduction plate (101);

and the two ends of the thermal fuse (103) are respectively connected with the safety channel (100) and the noise reduction plate (101), and when the temperature of the thermal fuse (103) is higher than a melting point due to the internal fire of the Box-in, the thermal fuse (103) is fused and the opening and closing mechanism (102) opens the noise reduction plate (101).

2. The sound absorption and insulation safety device suitable for the converter station Box-in according to claim 1, characterized in that the thermal fuse (103) comprises a fixed end (201) connected with the safety channel (100), a movable end (202) connected with the noise reduction plate (101), and a fuse wire (203) detachably connected with the fixed end (201) and the movable end (202), respectively.

3. The sound absorption and insulation safety device suitable for the converter station Box-in according to claim 2, characterized in that the minimum fusing temperature of the fuse wire (203) is 200 ℃, and the fusing time of the fuse wire (203) is 25 seconds to 35 seconds.

4. The sound absorption and insulation safety device suitable for the Box-in of the converter station according to claim 1, wherein the opening and closing mechanism (102) comprises a first support rod (301) rotatably connected with the noise reduction plate (101) and a second support rod (302) rotatably connected with the Box-in, and the second support rod (302) is sleeved outside the first support rod (301) and is slidably connected with the first support rod (301).

5. A sound absorption and insulation safety device suitable for a converter station Box-in according to claim 4, characterized in that an elastic member (303) connected with the first support rod (301) is arranged in the second support rod (302).

6. The sound absorption and insulation safety device suitable for the Box-in of the converter station is characterized in that the noise reduction plate (101) comprises a plate main body (401) rotatably connected with the first support rod (301) and a sealing ring (402) sleeved on the periphery of the plate main body (401) and hinged with the Box-in.

7. A sound-absorbing and sound-insulating safety device suitable for a converter station Box-in according to claim 6, characterized in that the inner side of the plate body (401) and the inner side of the sealing ring (402) are provided with sound-absorbing material (403) or sound-absorbing structure (404) at intervals.

8. The sound absorption and insulation safety device suitable for the Box-in of the converter station according to claim 7, characterized in that the inner side of the plate main body (401) and the inner side of the sealing ring (402) are provided with a perforated plate structure at intervals.

9. The sound absorption and insulation safety device suitable for the converter station Box-in according to claim 6 is characterized in that a waterproof band (405) corresponding to the sealing ring (402) is arranged on the Box-in.

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