CN107358985B - A kind of anti-cyclone grill designs method - Google Patents
A kind of anti-cyclone grill designs method Download PDFInfo
- Publication number
- CN107358985B CN107358985B CN201710461851.XA CN201710461851A CN107358985B CN 107358985 B CN107358985 B CN 107358985B CN 201710461851 A CN201710461851 A CN 201710461851A CN 107358985 B CN107358985 B CN 107358985B
- Authority
- CN
- China
- Prior art keywords
- frame
- baffle
- grid
- connecting rod
- cyclone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D1/00—Details of nuclear power plant
- G21D1/02—Arrangements of auxiliary equipment
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/14—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate against other dangerous influences, e.g. tornadoes, floods
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
Abstract
The invention discloses a kind of anti-cyclone grill designs methods, the vertical height H of grid, the grid draught area A of actual demand are determined first, the width l1 for the surface plate connecting with transverse connecting rod on front side of frame, then the thickness t of baffle chooses the bending angle among baffle, determine that the number of plies n of baffle in grid, the distance between neighbouring two block baffles bending angular vertex h finally calculate the horizontal breadth W of grid, determine the structure of anti-cyclone grid.The frame and connecting rod of the method for the present invention design primarily serve the effect for keeping overall structure stable, baffle is then used to provide draught area and the protective action to inside, there is extraordinary ventilation and protective performance by actual verification, there is very main meaning for related facilities such as nuclear power stations.
Description
Technical field
The present invention relates to a kind of anti-cyclone grill designs methods, specifically, being to be related to one kind to be related to having compared with high pass
While wind rate effectively stop foreign matter directly through grid method.
Background technique
Protective grille in the critical facilities such as nuclear power station facility should consider that the unsafe conditions such as explosion occur when internal
When, grid will play the role of good performance of ventilating to play explosion-proof heat dissipation；In the case that the portion of taking into account works normally again,
Grid has enough exterior protection abilities, to meet under the action of the factors such as high wind, prevents foreign direct from grid
Into inside facility, avoid generating threat to internal safety.
In the prior art, still none of these methods can be designed while keeping high ventilation rate, internally explosion-proof heat dissipation
There are also the grids of good exterior protection effect.Existing grill designs method is all that rule of thumb, cannot cope with various quantizations
Specific requirement be designed.When stating anti-cyclone grid in design, the theory deduction Jing Guo system and do not test actually
Card is not able to satisfy design needs.
But China is greatly developing nuclear energy power generation technology at present, has built a large amount of nuclear power facility, to such grid
Design method have greatly demand again.Therefore, it is necessary to meet a kind of anti-cyclone grill designs method.
Summary of the invention
Technical problem: the present invention provides a kind of anti-cyclone grill designs method, can design and keep higher ventilation
The anti-cyclone grid for the ability that is well protected against is provided while rate, is suitable for current many critical facilities, such as nuclear power station, more
The blank of current domestic correlative technology field is mended.
Technical solution: anti-cyclone grill designs method of the invention, comprising the following steps:
1) the vertical height H of grid, the grid draught area A of actual demand, the frame with grid are determined according to design objective
The width l1 of the surface plate of front side transverse connecting rod connection, the thickness t of baffle in grid；
2) bending angle among baffle is arbitrarily chosen within the scope of 60 °~72 °Then grid is determined respectively according to the following formula
The number of plies n of middle baffle, the distance between neighbouring two block baffles bending angular vertex h:
3) the horizontal breadth W of grid is calculated according to the following formula:
Wherein, fix is bracket function, and length unit m, angular unit is degree, square measure m2；
4) parameter according to step 1), 2), 3) obtained determines that the structure of anti-cyclone grid is as follows: including frame, setting
The frame front and rear sides 2n transverse connecting rod, longitudinal direction on rear side of the frame and orthogonal with transverse connecting rod is set
Connecting rod, the n folded plate type baffle of setting in the frame, the front side of the frame and rear side, there is n transverse connecting rod etc. respectively
The setting of spacing hierarchal arrangement, the equidistant hierarchal arrangement setting of n baffle, each baffle rear and front end is arranged with one respectively
The transverse connecting rod that transverse connecting rod on rear side of frame is arranged on front side of frame with one connects.
Further, in the method for the present invention, frame is character "door" form structure, including 3 pieces are located at upside, left side, right side
And partition connected vertically two-by-two.
Further, in the method for the present invention, baffle is L-type folded plate, described two including two surface plates being linked together
The angle of surface plate and vertical plane isBending angle angle i.e. among baffle isBending angle two sides, with cross on front side of frame
The width of the surface plate connected to connecting rod is l1, and the width for the surface plate connecting with frame posterior lateral connecting rod is l2, and
Meet the relationship of 1 l1/l2≤2 <.
Further, in the method for the present invention, the proportionate relationship of l1 and l2 are l1/l2=2.
Further, in the method for the present invention, transverse connecting rod is arranged in frame front and rear sides in the horizontal direction respectively, length
Identical as baffle, both ends are connect with frame ends；Longitudinally connected bar is along vertical arrangement, frame, baffle, transverse connecting rod and longitudinal direction
It is fixedly connected between connecting rod.
Further, it in the method for the present invention, is connect inside baffle left and right ends and frame two sides.
Baffle is the steel plate materials thickness for making baffle with a thickness of t, and choosing the common steel plate of existing market can reduce
Cost.Ventilation rate requirement is higher, and the Weir Plate Thickness of selection is thinner, generally 10mm-20mm or so.When assembling, baffle or so two
It is connect on the inside of end and frame, baffle is successively arranged along the vertical direction, and baffle bending angle two sides are with vertical plane angle
In the method for the present invention, by calculating and actual verificationValue range be 60 °~72 °.
In above-mentioned relation formula, withFor variable, the value in 60 °~72 ° of value range is traversed, obtains corresponding lattice respectively
The value of the distance between the number of plies n of baffle and two block baffles bending angular vertex h, are compared series of values, select in grid
The optimal case for selecting out the high economical rationality again of ventilation rate therein is the relevant parameter of grid.
Transverse connecting rod is arranged inside and outside baffle in the horizontal direction in grid, and length is identical as baffle, both ends and frame
Connection on the inside of frame；Longitudinally connected bar is located inside grid, quantity need to be sentenced according to whole grid stability requirement along vertical arrangement
It is disconnected.Connection type is to fix between frame, baffle, transverse connecting rod and longitudinally connected bar corresponding portion, irremovable.
In the present invention, transverse connecting rod 3 and longitudinally connected bar 4 are referred to as connecting rod, effect be to cell structure into
Row is reinforced, its integral strength and anti-seismic performance are enhanced.Verifying by building computation model to the intensity and anti-seismic performance of grid,
Transverse connecting rod and longitudinally connected bar have very obvious action in cell structure.The anti-cyclone of the method for the present invention design
Grid is needed when there is foreign shock, can keep out very strong impact force, at this time transverse connecting rod and longitudinally connected bar pair
The overall stability for promoting grid is particularly significant.
Further, a kind of anti-cyclone grid of the method for the present invention design, the connection between connecting rod, frame and baffle
Mode is selected according to actual working environment, and there are commonly welding etc..
The utility model has the advantages that compared with prior art, the present invention having the advantage that
Anti- cyclone grill designs method of the invention, can show in practical applications obviously superiority:
1. anti-cyclone grill designs method of the invention, different from existing design method empirically, for each
Kind design requirement has the process for explicitly calculating and comparing, and theory deduction is very perfect, has both accuracy and practicability, provides
Specific calculation method, it is easy to operate, greatly reduce the difficulty of anti-cyclone grill designs on this basis；
2. anti-cyclone grill designs method of the invention, optimizes and improves from traditional design model, will be whole
The parameters of a grill designs are calculated, thus by the setting of very perfect structure and very ingenious baffle, so that
Entire grid ensure that draught area for the obstruction very little of ventilation, so that there is high ventilation rate, it can according to different demands
Reach 80% or more, greatly ensure that the function of its explosion-proof heat dissipation；Two parts have certain angle offset before and after baffle, can
Foreign matter is stopped directly to pass through from the gap between baffle；Even if some foreign matter enters and in the deflection by baffle, significantly
Reduce to internal percussion.Compared with prior art, in the case where possessing higher ventilation rate, also can effectively prevent
Foreign matter plays extraordinary protective action by grid, and the high antihunt action of integral strength is also very significant；
3. the present invention have passed through stringent calculating, the anti-cyclone grid of design in the design to its each section component
Structure very simple meets actual demand by the collective effect of each section, thus for being wanted in terms of actual production and processing
Ask lower, it is easily manufactured, it is conducive to promote.
Detailed description of the invention
Certain two block baffle schematic diagram in the anti-cyclone grid that Fig. 1 (a) designs for the method for the present invention, Fig. 1 (b) are all gears
The regular schematic diagram of plate arrangement；
The connecting rod front schematic view for the anti-cyclone grid that Fig. 2 (a) designs for the method for the present invention, Fig. 2 (b) are this hair
The connecting rod reverse side schematic diagram of the anti-cyclone grid of bright method design；
The transverse connecting rod and longitudinally connected bar connection schematic diagram for the anti-cyclone grid that Fig. 3 designs for the method for the present invention；
The overall structure front schematic view for the anti-cyclone grid that Fig. 4 (a) designs for the method for the present invention, Fig. 4 (b) are this hair
The overall structure reverse side schematic diagram of the anti-cyclone grid of bright method design；
Have in figure: 1- frame, 2- baffle, 3- transverse connecting rod, the longitudinally connected bar of 4-.
Specific embodiment
Below with reference to embodiment and Figure of description, the present invention is further illustrated:
The anti-cyclone grid requirement designed in the present embodiment: shape is rectangle, and a height of 2m, width 1m, ventilation rate
Reach 75%, i.e. draught area is 1.5m2.In the present embodiment, anti-cyclone grid material is selected as steel.
The anti-cyclone grid of the method for the present invention design, by frame 1, baffle 2, transverse connecting rod 3 and longitudinally connected bar 4 four
Part forms.Wherein transverse connecting rod 3 and longitudinally connected bar 4 are referred to as connecting rod.Entire grid includes that frame 1, setting exist
1 rear side of the frame and orthogonal with transverse connecting rod 3 vertical is arranged in multiple transverse connecting rods 3 of 1 front and rear sides of frame
To connecting rod 4, the multiple folded plate type baffles 2 being arranged in frame 1, the front side of the frame 1 and rear side, multiple transverse connecting rods
3 equidistant hierarchal arrangements settings, the setting of the multiple baffle 2 equidistant hierarchal arrangement, each 2 rear and front end of baffle respectively with
One transverse connecting rod 3 that 1 rear side of frame is arranged in and a transverse connecting rod 3 that 1 front side of frame is arranged in connect.
As shown in Fig. 4 (a) and Fig. 4 (b), frame 1 is the outer rim of grid, is character "door" form structure, including 3 pieces are located at
Upside, left side, right side and partition connected vertically, main function are connected with building structure two-by-two, shape and size are
The outer dimension of grid is in the present embodiment rectangle, and high H is 2m, width 1m.The frame part on top is not shown in figure, such as
Fruit shows that the other parts that will affect in figure are shown.
As shown in Fig. 1 (a), baffle 2 is L-type folded plate, including two surface plates being linked together, described two surface plates with
The angle of vertical plane isBending angle angle i.e. among baffle 2 isBending angle two sides, with 1 front side lateral connection of frame
The width for the surface plate that bar 3 connects is l1, and the width for the surface plate connecting with 1 posterior lateral connecting rod 3 of frame is l2, and is met
The relationship of 1 l1/l2≤2 <.From the aspect of economy saving, it is most preferably designed as l1/l2=2.In the present embodiment, it bends
The value of the width l1 for the surface plate that angle side is connect with 1 front side transverse connecting rod 3 of frame takes 320mm, the vertical height H of grid to be
2m, the draught area A of actual demand are 1.5m2, baffle with a thickness of t=10mm.The horizontal breadth W of grid, baffle in grid
Number of plies n, the bending angle among the distance between neighbouring two block baffles bending angular vertex h and baffleBetween to meet
Following relationship:
WhereinFix is bracket function, length unit m, angle
Unit is degree, square measure m2.By calculating and actual verificationValue range be 60 °~72 °.
WithFor variable, the value in 60 °~72 ° of value range is traversed, specific design procedure is as follows:
(1) bending angle among baffle 2 is arbitrarily chosen within the scope of 60 °~72 °Then basisCalculate the distance between neighbouring two block baffles bending angular vertex h；
Simultaneously according to n=H/h, the number of plies n of baffle 2 in grid is calculated；
(2) byCalculate the level of grid
Thickness W, wherein fix is bracket function, and length unit m, angular unit is degree, square measure m2；
(3) it determines that the structure of anti-cyclone grid is as follows: including frame 1, the multiple of 1 front and rear sides of frame is set
1 rear side of frame and the longitudinally connected bar 4 orthogonal with transverse connecting rod 3, setting is arranged in frame 1 in transverse connecting rod 3
Multiple folded plate type baffles 2, the front side of the frame 1 and rear side, the equidistant hierarchal arrangement setting of multiple transverse connecting rods 3,
The setting of the multiple baffle 2 equidistant hierarchal arrangement, the cross that each 2 rear and front end of baffle is arranged on rear side of frame with one respectively
The transverse connecting rod 3 being arranged on front side of frame to connecting rod 3 and one connects.
In the present embodiment, it is computed69 ° are taken, it is 16 that the value of h, which takes 124.01mm, number of plies n, and horizontal breadth W is
4.4812m, draught area is 1.5866m at this time2, ventilation rate 79.33%.
In embodiments of the present invention, as shown in Fig. 2 (a), Fig. 2 (b), Fig. 3, transverse connecting rod 3 is in grid inside and outside baffle 2
Two sides are arranged in the horizontal direction, and length is identical as baffle 2, are connected on the inside of both ends and frame 1, inside and outside distribution and baffle 2, with
Baffle 2 connects；Longitudinally connected bar 4 is located inside grid, connect with baffle 2 or transverse connecting rod 3 along vertical arrangement, and quantity needs
Judged according to whole grid stability requirement.It is connected between frame 1,4 corresponding portion of baffle 2, transverse connecting rod 3 and longitudinally connected bar
Mode is to fix, irremovable.
As shown in Fig. 1 (b), Fig. 4 (a) and Fig. 4 (b), in embodiments of the present invention, when assembling, baffle 2 is along 1 inside of frame
High direction is successively arranged, and bending distance between angular vertex is h=124.01mm.When assembling, two in the L-type folded plate of baffle 2
The angle of surface plate and vertical plane isIt is connected and fixed on the inside of baffle 2 and frame 1.In the present embodiment, selection welding
Mode is attached each section of grid.
Above-described embodiment is only the preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill of the art
For personnel, without departing from the principle of the present invention, several improvement and equivalent replacement can also be made, these are to the present invention
Claim improve with the technical solution after equivalent replacement, each fall within protection scope of the present invention.
Claims (6)
1. a kind of anti-cyclone grill designs method, which is characterized in that method includes the following steps:
1) the vertical height H of grid is determined according to design objective, the grid draught area A of actual demand, baffle (2) is L in grid
Type folded plate, including two surface plates being linked together, the surface plate being connect with transverse connecting rod (3) on front side of the frame (1) of grid
Width l1, the thickness t of baffle (2) in grid；
2) the intermediate bending angle of baffle (2) is arbitrarily chosen within the scope of 60 °~72 °Then grid is determined respectively according to the following formula
The number of plies n of middle baffle (2), the distance between neighbouring two block baffle (2) bending angular vertex h:
3) the horizontal breadth W of grid is calculated according to the following formula:
Wherein, fix is bracket function, and length unit m, angular unit is degree, square measure m2；
4) parameter obtained according to the step 1), 2), 3) determines that the structure of anti-cyclone grid is as follows: including frame (1), setting
It sets in the 2n transverse connecting rod (3) of the frame (1) front and rear sides, setting on rear side of the frame (1) and and lateral connection
The orthogonal longitudinally connected bar (4) of bar (3), n folded plate type baffle (2) being arranged in frame (1), the front side of the frame (1)
And rear side, there is the equidistant hierarchal arrangement setting of n transverse connecting rod (3) respectively, the n folded plate type baffle (2) is equidistantly divided
Layer is arranged, the transverse connecting rod (3) and one that each baffle (2) rear and front end is arranged on rear side of frame (1) with one respectively
A transverse connecting rod (3) connection being arranged on front side of frame (1).
2. anti-cyclone grill designs method according to claim 1, which is characterized in that the frame (1) is door shape
Structure, including 3 pieces be located at upside, left side, right side and partition connected vertically two-by-two.
3. anti-cyclone grill designs method according to claim 1, which is characterized in that described two surface plates and vertical
The angle in face isThat is the intermediate bending angle angle of baffle (2) isBending angle two sides connect with lateral on front side of frame (1)
The width of the surface plate of extension bar (3) connection is l1, and the width for the surface plate connecting with frame (1) posterior lateral connecting rod (3) is
L2, and meet the relationship of 1 l1/l2≤2 <.
4. a kind of anti-cyclone grill designs method according to claim 3, which is characterized in that the ratio of the l1 and l2
Relationship is l1/l2=2.
5. a kind of anti-cyclone grill designs method according to claim 1,2,3 or 4, which is characterized in that the transverse direction
Connecting rod (3) is arranged in frame (1) front and rear sides in the horizontal direction respectively, and length is identical as baffle (2), both ends and frame (1)
End connection；Longitudinally connected bar (4) is along vertical arrangement, frame (1), baffle (2), transverse connecting rod (3) and longitudinally connected bar (4)
Between be fixedly connected.
6. a kind of anti-cyclone grill designs method according to claim 1,2,3 or 4, which is characterized in that the baffle
(2) it is connect inside left and right ends and frame (1) two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710461851.XA CN107358985B (en) | 2017-06-16 | 2017-06-16 | A kind of anti-cyclone grill designs method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710461851.XA CN107358985B (en) | 2017-06-16 | 2017-06-16 | A kind of anti-cyclone grill designs method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107358985A CN107358985A (en) | 2017-11-17 |
| CN107358985B true CN107358985B (en) | 2019-09-10 |
Family
ID=60272412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710461851.XA Active CN107358985B (en) | 2017-06-16 | 2017-06-16 | A kind of anti-cyclone grill designs method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107358985B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4144802A (en) * | 1977-01-19 | 1979-03-20 | Babin Paul A | Hurricane/tornado building protection system |
| CN2203708Y (en) * | 1994-03-21 | 1995-07-19 | 张金合 | Multi-function anti-typhoon shutter |
| CN201310133Y (en) * | 2008-11-25 | 2009-09-16 | 苏州皇家整体住宅系统有限公司 | Typhoon and earthquake resistant reinforcing device for wall body |
| CN202645037U (en) * | 2012-06-19 | 2013-01-02 | 中国十七冶集团有限公司 | Anti-typhoon simple and easy protection device for movable board room |
| CN204002439U (en) * | 2014-06-12 | 2014-12-10 | 中国核电工程有限公司 | The ventilating opening structure of anti-cyclone rigidity missile and little missile |
| CN204386253U (en) * | 2014-12-03 | 2015-06-10 | 孟昊 | A kind of building wind-proof revetment |
| CN104847164A (en) * | 2015-04-02 | 2015-08-19 | 黄思颖 | Typhoon prevention device |
-
2017
- 2017-06-16 CN CN201710461851.XA patent/CN107358985B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4144802A (en) * | 1977-01-19 | 1979-03-20 | Babin Paul A | Hurricane/tornado building protection system |
| CN2203708Y (en) * | 1994-03-21 | 1995-07-19 | 张金合 | Multi-function anti-typhoon shutter |
| CN201310133Y (en) * | 2008-11-25 | 2009-09-16 | 苏州皇家整体住宅系统有限公司 | Typhoon and earthquake resistant reinforcing device for wall body |
| CN202645037U (en) * | 2012-06-19 | 2013-01-02 | 中国十七冶集团有限公司 | Anti-typhoon simple and easy protection device for movable board room |
| CN204002439U (en) * | 2014-06-12 | 2014-12-10 | 中国核电工程有限公司 | The ventilating opening structure of anti-cyclone rigidity missile and little missile |
| CN204386253U (en) * | 2014-12-03 | 2015-06-10 | 孟昊 | A kind of building wind-proof revetment |
| CN104847164A (en) * | 2015-04-02 | 2015-08-19 | 黄思颖 | Typhoon prevention device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107358985A (en) | 2017-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106503390B (en) | A kind of creep fatigue strength design of plate-fin heat exchanger | |
| CN108054769A (en) | A kind of battery energy storage system control strategy towards primary frequency regulation of power network | |
| CN103727805B (en) | The degree of depth coagulates water demist environmental protecting device | |
| CN105244889A (en) | Power distribution network reactive power compensation planning method | |
| CN106355042B (en) | The homogenization design method of plate-fin heat exchanger | |
| CN106338431B (en) | Method and its application design method for determining plate-fin heat exchanger mechanics parameter | |
| CN202734640U (en) | Micro-channel heat exchanger and foamed metal fin thereof | |
| CN103021478A (en) | Nuclear fuel assembly based structural grillwork with flow hybrid coordinating effect | |
| CN107358985B (en) | A kind of anti-cyclone grill designs method | |
| CN109242273A (en) | A kind of distribution network failure recovery scheme population evaluation method | |
| CN107130898B (en) | A kind of anti-cyclone grid | |
| CN106013332A (en) | Vortex-eliminating structure for suction sump of pump station | |
| CN101672118A (en) | Main workshop structure of large heat power plant | |
| CN104657910B (en) | A kind of daily postitallation evaluation method of power network | |
| CN107797132B (en) | A kind of inversion method of three dimensional radiation field dosage | |
| CN207166093U (en) | Concentration bus duct and controller switching equipment | |
| CN208253905U (en) | Air-cooled unit frame structure | |
| CN206230192U (en) | Guard rail multi-functional welding frock | |
| CN201837147U (en) | Micro-channel heat exchanger | |
| CN207610333U (en) | Total-heat exchanger | |
| CN104361533B (en) | A kind of power system high-frequency cutting machine and low frequency load shedding improve the performance quantitatively evaluating index calculating method of frequency safety | |
| CN113902167A (en) | Comprehensive intelligent energy system configuration optimization method and device considering station house investment | |
| CN106529800A (en) | Method for rapidly determining importance in risk control dimension of power grid | |
| CN206742255U (en) | Solar cell backboard | |
| CN205986001U (en) | Wire and cable fixed bolster |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |