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CN-117018506-B - Fire spreading and blocking device for photovoltaic square matrix

CN117018506BCN 117018506 BCN117018506 BCN 117018506BCN-117018506-B

Abstract

The invention relates to a fire spreading blocking device for photovoltaic arrays, which comprises a frame body and blocking components, wherein the frame body is provided with a mounting position for connecting the photovoltaic arrays, and at least one frame body is arranged at any edge of each photovoltaic array, when the number of the photovoltaic arrays is one or more of the non-continuous laying and a channel is arranged between two adjacent photovoltaic arrays, the blocking components comprise a first blocking piece and a third blocking piece, and when the number of the photovoltaic arrays is multiple and the continuous laying, the blocking components comprise the first blocking piece, a second blocking piece, the third blocking piece and a fourth blocking piece, the blocking devices can block a plurality of the photovoltaic arrays, so that the spreading speed of flame when a certain photovoltaic array fires is slowed down to a certain extent, and time support is provided for a person to take fire fighting measures.

Inventors

  • ZHANG WANG
  • YANG MINGRUI
  • WANG YUE
  • LV DONG

Assignees

  • 应急管理部天津消防研究所

Dates

Publication Date
20260512
Application Date
20230823

Claims (8)

  1. 1. The fire spreading and blocking device for the photovoltaic square arrays is characterized by comprising a frame body (1) and blocking components, wherein the frame body (1) is provided with a mounting position (101) for connecting the photovoltaic square arrays (4), and at least one frame body (1) is arranged at any edge of each photovoltaic square array (4); When the number of the photovoltaic square matrixes (4) is one or more than one discontinuous laying and a channel is formed between two adjacent photovoltaic square matrixes (4), the blocking assembly comprises a first blocking piece (201) and a third blocking piece (5), the first blocking piece (201) is provided with a containing part (3) used for containing the frame body (1), the first blocking piece (201) is positioned at the edge part of the photovoltaic square matrixes, one side of the first blocking piece (201) away from the containing part (3) is provided with the third blocking piece (5), a first clamping groove (501) used for inserting the first blocking plate (901) is formed in the third blocking piece (5), and the first blocking plate (901) is arranged in the first clamping groove (501); when the number of the photovoltaic square matrixes (4) is multiple and the photovoltaic square matrixes are continuously laid, the blocking assembly comprises a first blocking member (201), a second blocking member (202), a third blocking member (5) and a fourth blocking member (8), wherein the first blocking member (201) and the second blocking member (202) are respectively provided with a containing part (3) for containing the frame body (1), the first blocking member (201) is positioned at the edge part of the photovoltaic square matrixes, the second blocking member (202) is positioned between two adjacent photovoltaic square matrixes (4), two sides of the second blocking member (202) are respectively provided with a containing part (3) which is mutually independent, one side of the first blocking member (201) deviating from the containing part (3) is provided with the third blocking member (5), the inside of the third blocking member (5) is provided with a first clamping groove (501) for inserting the first blocking member (901), the inside of the first clamping groove (501) is provided with the first blocking member (901), the second blocking member (202) is separated from the second side of the containing part (3) and the fourth blocking member (8) is provided with a second clamping groove (801); a gap is formed between one end, away from the photovoltaic square matrix (4), of each of the third blocking piece (5) and the fourth blocking piece (8) and the roof; The height of the gap is h, and h=pS/(86400 Lv), when the calculated h value is more than or equal to 10mm, the height of the gap is 10mm of a fixed value; wherein v is the water flow speed of the upper surface of the roof, p is the recorded maximum rainfall of 24 hours in the local area, and S is the area of the photovoltaic array (4); When the photovoltaic square matrix (4) is positioned on a horizontal roof and is discontinuously laid, L is the perimeter of the photovoltaic square matrix (4); when the photovoltaic square matrix (4) is positioned on an inclined roof and is discontinuously laid, L is the side length of the photovoltaic square matrix (4) at the lowest side of the horizontal position of the photovoltaic square matrix (4); When the photovoltaic square arrays (4) are positioned on a horizontal roof and are laid continuously, L is the sum of side lengths of one side of the photovoltaic square arrays (4) without adjacent photovoltaic square arrays (4), and when the value of h of the fourth barrier (8) positioned between two adjacent photovoltaic square arrays (4) is calculated, the two adjacent photovoltaic square arrays (4) are respectively calculated, wherein one with a large value is the value of h of the fourth barrier (8); when the photovoltaic square arrays (4) are positioned on the inclined roof and are laid continuously, L is the side length of the photovoltaic square array (4) on the lowest side of the horizontal position of the photovoltaic square array (4), when the value of h of the fourth barrier (8) positioned between two adjacent photovoltaic square arrays (4) is calculated, the two adjacent photovoltaic square arrays (4) are respectively calculated, wherein one with a large value is the value of h of the fourth barrier (8).
  2. 2. The fire spread blocking device of a photovoltaic array according to claim 1, characterized in that the receiving portion (3) comprises a support plate (301) and a stop plate (302) arranged opposite each other; The upper surface of the supporting plate (301) is in contact with the lower surface of the frame body (1), and the stop plate (302) is used for stopping the frame body (1).
  3. 3. The fire spread blocking device according to claim 1, wherein, The third barrier (5) is fixedly connected with the first barrier (201) or is connected with the first barrier (201) through a hinge (6).
  4. 4. The fire spread blocking device according to claim 3, wherein, The third barrier (5) further comprises a connector (7) for securing the first barrier panel (901) within the first clip groove (501).
  5. 5. The fire spread blocking device according to claim 4, wherein, The fourth blocking piece (8) is fixedly connected with the second blocking piece (202), and the second clamping groove (801) of the fourth blocking piece (8) is communicated with the inside of the second clamping groove (801) of the second blocking piece (202); the second baffle plate (902) is connected in the second clamping groove (801) through a connecting piece (7).
  6. 6. The fire spread blocking device according to claim 4, wherein, The fourth barrier (8) is connected to the second barrier (202) by a hinge (6), The second blocking piece (202) is provided with a sealing plate (2021) for stopping the second blocking plate (902), and the sealing plate (2021) is fixedly arranged at the opening part of the second clamping groove (801) of the second blocking piece (202); the fourth barrier (8) is provided with the connecting piece (7) for connecting the second barrier plate (902).
  7. 7. The fire spread blocking device of a photovoltaic array according to claim 6, characterized in that the connection (7) comprises a rail (701) and a base (702); The insertion rail (701) is fixedly arranged on the outer wall surface of the third blocking piece (5) and/or the outer wall surface of the fourth blocking piece (8); the base (702) comprises a first plate (7021) and a plug connector (7022), the plug connector (7022) is fixedly connected with the first plate (7021), and a slot matched with the outline of the plug rail (701) is formed in the plug connector (7022).
  8. 8. The photovoltaic array fire spread blocking device according to claim 5 or 6, wherein, The first baffle plate (901) and the second baffle plate (902) are fireproof plates, and the thickness of the fireproof plates is delta=0.3λd/(1+0.42λd); Wherein, the For the thickness of the refractory plate, Is the heat conductivity coefficient of the fire-resistant plate; in the thickness calculation of the first barrier plate (901), D is a distance between the first barrier member (201) and the first barrier member (201) disposed opposite to the first barrier member, or a distance between the first barrier member (201) and the second barrier member (202); In the thickness calculation of the second barrier plate (902), D is the larger of the distances between the second barrier member (202) and the first barrier member (201) or the second barrier member (202) which are adjacent to both sides and are oppositely arranged.

Description

Fire spreading and blocking device for photovoltaic square matrix Technical Field The invention belongs to the technical field of fire prevention of photovoltaic square arrays, and particularly relates to a fire spreading blocking device of a photovoltaic square array. Background With rapid development and wide popularization of the photovoltaic industry, the installed capacity is increased year by year, and inverters, junction boxes, high-current components and application scenes are more and more complex, so that fire hidden trouble is caused. For example, after photovoltaic power generation is additionally arranged on a building, potential ignition sources such as electric arcs possibly occurring at the connection positions of a plurality of photovoltaic module cables, spontaneous combustion of hot spots of the photovoltaic modules and the like are increased, meanwhile, because the material characteristics of the photovoltaic modules, such as ethylene-vinyl acetate copolymer adhesive films (EVA adhesive films for short) of Shan Boguang V modules, back plates and the like are combustible materials, when a certain photovoltaic array installed on the building is damaged to cause fire, other photovoltaic arrays around the photovoltaic array are easily ignited, and huge property loss can be caused. Disclosure of Invention The purpose of the present disclosure is to provide a fire spread blocking device for a photovoltaic array, which can play a role in flame retardation to the photovoltaic array, so as to at least partially solve the above technical problems. In order to achieve the aim, the disclosure provides a fire spreading and blocking device for a photovoltaic array, which comprises a frame body and a blocking assembly, wherein the frame body is provided with a mounting position for connecting the photovoltaic arrays, and at least one frame body is arranged at any edge of each photovoltaic array; When the number of the photovoltaic square matrixes is one or more than one of the photovoltaic square matrixes which are discontinuously laid and a channel is formed between two adjacent photovoltaic square matrixes, the blocking assembly comprises a first blocking part and a third blocking part, the first blocking part is provided with a containing part for containing the frame body, and is positioned at the edge part of the photovoltaic square matrixes; When the photovoltaic square arrays are multiple and are laid continuously, the blocking assembly comprises a first blocking piece, a second blocking piece, a third blocking piece and a fourth blocking piece, wherein the first blocking piece and the second blocking piece are respectively provided with a containing part used for containing the frame body, the first blocking piece is located at the edge part of each photovoltaic square array, the second blocking piece is located between two adjacent photovoltaic square arrays, two sides of each second blocking piece are respectively provided with a containing part which are mutually independent, one side of each first blocking piece, which is away from the containing part, is provided with a third blocking piece, a first clamping groove used for being inserted with the first blocking piece is arranged in each third blocking piece, a first blocking piece is arranged in each first clamping groove, one side of each second blocking piece, which is away from the containing part, is provided with a fourth blocking piece, each fourth blocking piece and each second blocking piece are respectively provided with a second clamping groove used for being inserted with the second blocking piece, and each second clamping groove is internally provided with the second blocking piece. In some embodiments, the receiving portion includes a support plate and a stopper plate disposed opposite each other; the upper surface of backup pad with the lower surface contact of support body, the backstop board is used for backstop the support body. In some embodiments, the third barrier is attached to the first barrier or attached to the first barrier by a hinge. In some embodiments, the third barrier further comprises a connector to secure the first barrier panel within the first clip groove. In some embodiments, the fourth barrier is fixedly connected to the second barrier, the second clip groove of the fourth barrier being in communication with the second clip groove interior of the second barrier; the second baffle plate is connected in the second clamping groove through a connecting piece. In some embodiments, the fourth barrier is connected to the second barrier by a hinge; The second blocking piece is provided with a sealing plate for stopping the second blocking plate, and the sealing plate is fixedly arranged at the opening part of the second clamping groove of the second blocking piece; the fourth barrier member is provided with the connecting member for connecting the second barrier plate. In some embodiments, the connector compri