CN111022366B - High temperature resistance testing device for subway fan - Google Patents
High temperature resistance testing device for subway fan Download PDFInfo
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- CN111022366B CN111022366B CN202010124002.7A CN202010124002A CN111022366B CN 111022366 B CN111022366 B CN 111022366B CN 202010124002 A CN202010124002 A CN 202010124002A CN 111022366 B CN111022366 B CN 111022366B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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Abstract
The invention discloses a high-temperature-resistant testing device for a subway fan, which comprises a main box body and connecting boxes arranged on two sides of the main box body, wherein a first mounting box and a second mounting box are arranged in the main box body; an opening is formed in the side wall of the main box body, a sealing door is arranged in the opening, an installation block is arranged in the main box body, and a fixing frame is arranged on the installation block; a plurality of first through holes are formed in the side wall of the main box body, the heating cavity is communicated with the main box body through the first through holes, and a sealing assembly is arranged in the first through holes; the side wall of the first installation box is provided with a second through hole, the second through hole is internally provided with a first electromagnetic valve, the side wall of the second installation box is provided with a third through hole, and the third through hole is internally provided with a second electromagnetic valve.
Description
Technical Field
The invention belongs to the technical field of fans, and particularly relates to a high-temperature-resistant testing device for a subway fan.
Background
Some subway fans need to participate in fire fighting, can continuously and effectively work under the high-temperature condition under the fire working condition, provide necessary fresh air quantity for passengers and firefighters through air supply or smoke exhaust, form certain head-on air speed, induce passengers to safely evacuate, and remove harmful smoke. According to the national standard of China, the fan can continuously and effectively work for 1h at 280 ℃ under the condition of fire disaster working condition, and according to the requirement of foreign subway projects, the fan can bear reverse thermal shock airflow for at least 15 minutes on the premise of meeting the design standard of continuously and effectively working for 2h at 250 ℃: the 250 c hot air stream encounters the ambient air stream in the other direction. Therefore, higher requirements are provided for the high-temperature resistance testing device of the fan, and the problem which needs to be solved at present is solved urgently.
Disclosure of Invention
The invention provides a high-temperature-resistant testing device for a subway fan, aiming at overcoming the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: a high-temperature-resistant testing device for a subway fan comprises a main box body and connecting boxes arranged on two sides of the main box body, wherein a first mounting box and a second mounting box are arranged in the main box body; an opening is formed in the side wall of the main box body, a sealing door is arranged in the opening, an installation block is arranged in the main box body, and a fixing frame is arranged on the installation block; a plurality of first through holes are formed in the side wall of the main box body, the heating cavity is communicated with the main box body through the first through holes, and a sealing assembly is arranged in the first through holes; a second through hole is formed in the side wall of the first installation box, a first electromagnetic valve is arranged in the second through hole, a third through hole is formed in the side wall of the second installation box, and a second electromagnetic valve is arranged in the third through hole; when the fan is tested, the sealing door is opened, the fan is installed in the fixing frame, the fan is fixed under the action of the fixing frame, the fan is prevented from colliding with the inner wall of the main box body during testing, and the fan and the testing device are protected; the main box body has a heat preservation function under the action of the sealing door, so that the main box body has a preset temperature, the fan can be tested in a simulated high-temperature environment, and the detection precision of the fan is improved; under the action of the heating pipe, the temperature in the main box body is controlled, a high-temperature working environment is simulated for the fan, and the fan is placed in a preset temperature to be tested; under the mutual cooperation of the air feeder and the exhaust fan, reverse thermal shock airflow is provided for the detection of the fan, and a specific working environment is simulated really, so that the performance index of the fan is tested effectively, and the quality of a finished fan product is ensured; under the cooperation of the sealing assembly and the electromagnetic valve, the environment in the main box body is controlled, various conditions such as high temperature and thermal shock airflow are simulated, and the accuracy of a fan testing structure is guaranteed.
The bottom of the main box body is provided with a first movable groove, a first movable block is arranged in the first movable groove, a connecting hole is formed in the first movable block, and the bottom of the mounting block is provided with a connecting shaft matched with the connecting hole; a first movable cavity is formed in the mounting block, a first connecting plate is arranged in the first movable cavity, a first connecting rod is arranged on the first connecting plate, and a second connecting plate is arranged on the first connecting rod; when the fan is installed in the main box body, the movable door is opened, the second connecting plate is pulled outwards, the second connecting plate drives the first connecting plate to move out of the first movable cavity, and the length of the installation block is increased under the action of the second connecting plate and the first connecting rod, so that the installation block is directly pulled out of the main box body; under the mutual matching of the first movable groove and the first movable block, the movement of the mounting block is limited, so that the mounting block can only move along the horizontal direction, and the mounting block is prevented from being separated from the main box body; first movable block removes to first activity groove one end, under the mutually supporting of connecting axle and connecting hole, makes installation piece rotatable coupling on first movable block, rotates the installation piece 90, makes the one end of fixed frame outwards to in directly packing into fixed frame with the fan, reduce the fan installation degree of difficulty, so that do the test to the fan.
A plurality of fixing springs are arranged on the inner wall of the fixing frame, fixing plates are arranged at one ends of the fixing springs, and the fixing plates are arranged in a plurality of groups and are circumferentially arranged on the inner wall of the fixing frame; a second movable cavity is arranged on the mounting block, an air pressure rod is arranged in the second movable cavity, and a supporting block is arranged at the top of the air pressure rod; after the fan is arranged in the fixed frame, the fan is arranged on the fixed plate, the fixed spring pushes the fixed plate to be in contact with the side wall of the fan, the fan is fixed under the action of the fixed plate, and the fixing effect of the fixed frame on the fan is improved; under the arrangement of the fixed spring, the application range of the fixed frame is increased, so that the fixed frame can be suitable for fans of various sizes, the fans of various specifications can be tested conveniently, and the practicability of the testing device is improved; after the fan is installed in the fixed frame, the air pressure rod pushes the supporting block to move upwards, the supporting block is contacted with the bottom of the fan, supporting force is provided for the other end of the fan under the action of the supporting block, the unilateral stress of the fan is avoided, the stability of the fan during working is improved, the fan is prevented from shaking to be separated from the fixed frame during working, and the fan and the testing device are protected.
A fixing ring is arranged on the inner wall of the fixing frame and formed by winding elastic sheets, a connecting block is arranged at the top of the fixing frame, a fourth movable cavity communicated with the inside of the fixing frame is arranged on the connecting block, a fifth movable cavity communicated with the inside of the fixing frame is arranged on the mounting block, a first push block and a second push block are respectively arranged at two ends of the fixing ring, the first push block is arranged in the fourth movable cavity, and the second push block is arranged in the fifth movable cavity; after the fan is arranged in the fixed frame, the fixed plate is in contact with the side wall of the fan, the first push block and the second push block are pushed to one end of the fourth movable cavity and one end of the fifth movable cavity, the push blocks move to drive the two ends of the fixed ring to move, the middle part of the fixed ring shrinks inwards to be in contact with the fixed plate, and extrusion force is provided for the fixed plate under the action of the fixed ring, so that the fixed plate is better attached to the surface of the fan, and the fixing effect of the fixed plate on the fan is ensured; the vibrations that the fan during operation produced are absorbed through fixed spring, reduce the vibrations of fan to the minimum, and the fixed plate is laminated with the fan lateral wall mutually under solid fixed ring effect, avoids fan and fixed plate lateral wall to produce the collision, plays good guard action to the fan, makes the better vibrations to the fan production of fixed spring do the absorption.
A first reset spring is arranged on the side wall of the first push block, first slide blocks are arranged on the side walls of the other two sides of the first push block, and a first sliding groove matched with the first slide blocks is arranged on the inner wall of the fourth movable cavity; a fourth through hole is formed in the side wall of the fourth movable cavity, a fifth through hole corresponding to the fourth through hole is formed in the sealing door, and a push rod penetrates through the fifth through hole; under the mutual matching of the first sliding block and the first sliding groove, the first push block and the second push block are limited, so that the push block is prevented from being separated from the movable cavity, the fixed ring is driven to deform when the push block moves, and the fixing effect of the fixed plate on the fan is improved; the fan is packed into in the fixed frame back, rotates the installation piece, will install in the piece pushes away the main tank body again, covers sealing door, under the push rod effect, can operate the ejector pad by the closing plate at a distance from to fix the fan in fixed frame, promote the fixed effect to the fan, reduce the fixed degree of difficulty to the fan, make the installation of fan more convenient.
A guide rod is arranged on the side wall of the main box body, a second sliding groove is arranged on the guide rod, and a second sliding block matched with the second sliding groove is arranged on the side wall of the sealing door; connecting blocks are arranged on two sides of the fifth through hole, a plurality of second movable grooves are formed in the connecting blocks, first limiting springs are arranged in the second movable grooves, limiting blocks are arranged at one ends of the first limiting springs, first limiting grooves matched with the limiting blocks are formed in the side walls of the push rods, and cambered surfaces are arranged at one ends of the limiting blocks; after the fan is arranged in the main box body, the cover plate covers the opening, the push rod is pushed into the main box body, the push block is pushed to move towards one end of the movable cavity under the action of the push rod, the inner wall of the first limiting groove is contacted with the limiting block when the push rod moves, and the limiting block is pushed into the second movable groove under the arrangement of the cambered surface at one end of the limiting block, so that the push rod can normally move into the main box body, and the limiting block is prevented from blocking the movement of the push rod; when the push rod pushes the push block to be incapable of moving forward continuously, the limiting block is embedded in the first limiting groove to limit the push rod, so that the push rod provides supporting force for the push block, the fixing ring is continuously in a deformation state, and the fixing effect of the fixing plate on the fan is improved; under the cooperation of the second sliding groove and the second sliding block, the sealing door is matched with the opening in a translation mode, and the push rod is prevented from being damaged when the sealing door is opened.
A sixth movable cavity is formed in the push rod, a sixth through hole is formed in the side wall of the first limiting groove, a first push plate is arranged in the first limiting groove, a third connecting plate is movably connected to the side wall of the first push plate, a connecting pipe is arranged in the sixth movable cavity, the other end of the third connecting plate is movably connected to the connecting pipe, a second reset spring is arranged at one end of the connecting pipe, a second push plate is arranged on the connecting pipe, and the second push plate penetrates through the sixth movable cavity; after the fan is detected, the second push plate is pulled outwards, the second push plate drives the connecting pipe to move, the third connecting plate rotates around the connecting point, the first push plate is pushed to move towards the outer side of the first limiting groove under the action of the third connecting plate, the limiting block in the first limiting groove is pushed out under the action of the first push plate, and the limiting block is disengaged from the first limiting groove so as to draw the push rod out of the fourth through hole and prevent the push rod from blocking the movement of the sealing door; under the effect of the second reset spring, the third connecting plate is continuously in a continuous inclined state, the first push plate is folded on the inner wall of the first limiting groove, and the limiting block can be normally inserted into the first limiting groove, so that the fixing effect is provided for the push rod under the effect of the limiting block.
The push rod is provided with a through cavity matched with the connecting pipe, a threaded rod penetrates through the through cavity, threads matched with the threaded rod are arranged on the inner wall of the through cavity, a fourth connecting plate is arranged at one end of the threaded rod, a third push plate is arranged at the other end of the threaded rod, and a seventh movable cavity matched with the third push plate is arranged at one end of the push rod; after the push rod pushes the push block to move to one end of the movable cavity, the push rod cannot continue to move, the push rod provides supporting force for the push block, the fourth connecting plate is rotated, the fourth connecting plate drives the threaded rod to rotate, the threaded rod pushes the third push plate to move forwards under the threaded fit, the third push plate pushes the push block to continue to move forwards for a certain distance, supporting force is further provided for the fixing ring, the fixing ring provides a better fixing effect for the fixing plate, the contact effect of the fixing plate and the side wall of the fan is improved, the fan to be detected is stably fixed in the fixing frame, and damage to the fan in the detection process is avoided; under screw-thread fit, make the threaded rod possess self-locking function to play the fixed action to the third push pedal, thereby for the ejector pad provides reliable supporting effect, avoid the ejector pad to remove the contact effect that influences fixed plate and fan.
The sealing assembly comprises a support ring arranged on the inner wall of the first through hole, a sealing plate rotatably connected to the inner wall of the first through hole and a stop block arranged on one side of the sealing plate; a third movable groove is formed in the inner wall of the first through hole, a fifth connecting plate is arranged on the side wall of the stop block, the fifth connecting plate is rotatably connected into the third movable groove, and supporting springs are respectively arranged on the side walls of the two sides of the fifth connecting plate; when the first through hole is in a closed state, the sealing plate seals the first through hole, so that the exchange of air flow in the heating cavity and air flow in the main box body is avoided, thermal shock air flow is formed in the main box body, and the performance of the fan is tested; under the mutually supporting of dog and support ring, make the closing plate become vertical state and arrange in first through-hole, avoid the closing plate to take place the upset, promote the sealed effect of closing plate to first through-hole.
A groove is formed in the inner wall of the connecting box, a first movable plate is arranged in the groove, a second connecting rod is arranged on the first movable plate, a sixth connecting plate is arranged on the second connecting rod, a plurality of seventh through holes are formed in the sixth connecting plate, and a plurality of fourth push plates matched with the sealing plate are arranged on the sixth connecting plate; a fourth movable groove is formed in the inner wall of the heating cavity, a second movable plate is arranged in the fourth movable groove, a third connecting rod is arranged on the second movable plate, a seventh connecting plate is arranged on the third connecting rod, and the first movable plate is fixedly connected to the seventh connecting plate; when the first through hole needs to be opened, the second movable plate moves in the fourth movable groove, the second movable plate moves to drive the first movable plate to move, the first movable plate pushes the fourth push plate to move, the sealing plate is pushed to rotate around the connecting point under the action of the fourth push plate, and the sealing plate pushes the stop block to turn over, so that the first through hole is in an opened state; under the arrangement of the seventh through hole, the gas flow on the sixth connecting plate is increased, so that the gas flow in the first through hole is ensured, and the heating treatment is conveniently carried out on the interior of the main box body under the action of the heating cavity; after the temperature in the main box body rises to the preset value, the second movable plate moves back, the baffle plate pushes the sealing plate to turn back under the action of the supporting spring, so that the sealing plate seals the first through hole again, and the automatic reset of the sealing plate is completed.
The invention has the following advantages: by adopting the technical scheme of the invention, the fan which can meet the requirements of foreign subway projects can bear reverse thermal shock airflow for at least 15 minutes on the premise of meeting the design standard of continuously and effectively working for 2 hours at 250 ℃, and is a relatively perfect testing device for the high temperature resistance test of the subway fan.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a right side view of the present invention.
Fig. 3 is a cross-sectional view taken along a-a in fig. 2.
Fig. 4 is an enlarged view of a portion a in fig. 3.
Fig. 5 is an enlarged view of fig. 3 at B.
Fig. 6 is an enlarged view of fig. 3 at C.
Fig. 7 is an enlarged view of fig. 3 at D.
Fig. 8 is a cross-sectional view taken along line B-B of fig. 2.
Fig. 9 is an enlarged view of fig. 8 at E.
Fig. 10 is an enlarged view of fig. 8 at F.
Fig. 11 is a front view of the present invention.
Fig. 12 is a cross-sectional view taken along line C-C of fig. 11.
Fig. 13 is an enlarged view at G in fig. 12.
Fig. 14 is an enlarged view of fig. 12 at H.
Fig. 15 is a cross-sectional view taken along line D-D in fig. 11.
Fig. 16 is an enlarged view at I in fig. 15.
Fig. 17 is an enlarged view at J in fig. 16.
Detailed Description
As shown in fig. 1-17, a high temperature resistance testing device for a subway fan comprises a main box body 1 and connection boxes 2 arranged on two sides of the main box body 1, wherein the main box body and the connection boxes are made of heat insulation materials; an air circulation pipe is arranged on the side wall of the connecting box, a first mounting box 12 and a second mounting box 13 are arranged in the main box body 1, a temperature sensor is further arranged in the main box body, an exhaust fan (not shown in the drawing) is arranged in the first mounting box 12, a blower (not shown in the drawing) is arranged in the second mounting box 13, a discharge port is formed in the bottom of the first mounting box, an air inlet is formed in the bottom of the second mounting box, a heating cavity is formed in the connecting box 2, a heating block 22 is arranged in the heating cavity, and a heating pipe 221 is arranged at the bottom of the heating block 22; an opening is formed in the side wall of the main box body 1, a sealing door 3 is arranged in the opening, an installation block 4 is arranged in the main box body 1, and a fixing frame 41 is arranged on the installation block 4; a plurality of first through holes are formed in the side wall of the main box body 1, the heating cavity is communicated with the main box body 1 through the first through holes, and a sealing assembly is arranged in the first through holes; a second through hole is formed in the side wall of the first installation box 12, a first electromagnetic valve is arranged in the second through hole, a third through hole is formed in the side wall of the second installation box 13, and a second electromagnetic valve is arranged in the third through hole; the first electromagnetic valve and the second electromagnetic valve have the same structure as the electromagnetic valve in the prior art; when the fan is tested, the sealing door is opened, the fan is installed in the fixing frame, the fan is fixed under the action of the fixing frame, the fan is prevented from colliding with the inner wall of the main box body during testing, and the fan and the testing device are protected; the main box body has a heat preservation function under the action of the sealing door, so that the main box body has a preset temperature, the fan can be tested in a simulated high-temperature environment, and the detection precision of the fan is improved; under the action of the heating pipe, the temperature in the main box body is controlled, a high-temperature working environment is simulated for the fan, and the fan is placed in a preset temperature to be tested; under the mutual cooperation of the air feeder and the exhaust fan, reverse thermal shock airflow is provided for the detection of the fan, and a specific working environment is simulated really, so that the performance index of the fan is tested effectively, and the quality of a finished fan product is ensured; under the cooperation of the sealing assembly and the electromagnetic valve, the environment in the main box body is controlled, various conditions such as high temperature and thermal shock airflow are simulated, and the accuracy of a fan testing structure is guaranteed.
As shown in fig. 3 and 6, a first movable groove is formed in the bottom of the main box body 1, a first movable block 43 is arranged in the first movable groove, a connecting hole is formed in the first movable block 43, and a connecting shaft 44 matched with the connecting hole is arranged at the bottom of the mounting block 4; a first movable cavity is formed in the mounting block 4, a first connecting plate is arranged in the first movable cavity, a first connecting rod is arranged on the first connecting plate, and a second connecting plate is arranged on the first connecting rod; when the fan is installed in the main box body, the movable door is opened, the second connecting plate is pulled outwards, the second connecting plate drives the first connecting plate to move out of the first movable cavity, and the length of the installation block is increased under the action of the second connecting plate and the first connecting rod, so that the installation block is directly pulled out of the main box body; under the mutual matching of the first movable groove and the first movable block, the movement of the mounting block is limited, so that the mounting block can only move along the horizontal direction, and the mounting block is prevented from being separated from the main box body; first movable block removes to first activity groove one end, under the mutually supporting of connecting axle and connecting hole, makes installation piece rotatable coupling on first movable block, rotates the installation piece 90, makes the one end of fixed frame outwards to in directly packing into fixed frame with the fan, reduce the fan installation degree of difficulty, so that do the test to the fan.
As shown in fig. 4 and 5, a plurality of fixing springs 411 are disposed on the inner wall of the fixing frame 41, a fixing plate 412 is disposed at one end of each fixing spring 411, and the fixing plates 412 are multiple sets and circumferentially disposed on the inner wall of the fixing frame 41; a second movable cavity is arranged on the mounting block 4, an air pressure rod 42 is arranged in the second movable cavity, and a supporting block 421 is arranged at the top of the air pressure rod 42; after the fan is arranged in the fixed frame, the fan is arranged on the fixed plate, the fixed spring pushes the fixed plate to be in contact with the side wall of the fan, the fan is fixed under the action of the fixed plate, and the fixing effect of the fixed frame on the fan is improved; under the arrangement of the fixed spring, the application range of the fixed frame is increased, so that the fixed frame can be suitable for fans of various sizes, the fans of various specifications can be tested conveniently, and the practicability of the testing device is improved; after the fan is installed in the fixed frame, the air pressure rod pushes the supporting block to move upwards, the supporting block is contacted with the bottom of the fan, supporting force is provided for the other end of the fan under the action of the supporting block, the unilateral stress of the fan is avoided, the stability of the fan during working is improved, the fan is prevented from shaking to be separated from the fixed frame during working, and the fan and the testing device are protected.
The mounting block is provided with a switch matched with the air pressure rod, and the air pressure rod is in the prior art and is not repeated; when the height of the air pressure rod is adjusted, the air pressure rod switch is pressed down, the supporting block is pushed downwards, the supporting block is pushed into the second movable cavity, the air blower is arranged in the fixed frame, the air pressure rod switch is pressed down, the supporting block is pushed by the air pressure cylinder to move upwards until the top surface of the supporting block is contacted with the side wall of the air blower, supporting force is provided for the other end of the air blower under the action of the supporting block, and the fixing effect on the air blower is improved.
As shown in fig. 13, a fixing ring 45 is disposed on an inner wall of the fixing frame 41, the fixing ring 45 is formed by winding elastic metal sheets, a connecting block 413 is disposed at a top of the fixing frame 41, a fourth movable cavity communicated with an inside of the fixing frame 41 is disposed on the connecting block 413, a fifth movable cavity communicated with the inside of the fixing frame 41 is disposed on the mounting block 4, a first pushing block 451 and a second pushing block are disposed at two ends of the fixing ring 45, respectively, the first pushing block 451 is disposed in the fourth movable cavity, and the second pushing block is disposed in the fifth movable cavity; after the fan is arranged in the fixed frame, the fixed plate is in contact with the side wall of the fan, the first push block and the second push block are pushed to one end of the fourth movable cavity and one end of the fifth movable cavity, the push blocks move to drive the two ends of the fixed ring to move, the middle part of the fixed ring shrinks inwards to be in contact with the fixed plate, and extrusion force is provided for the fixed plate under the action of the fixed ring, so that the fixed plate is better attached to the surface of the fan, and the fixing effect of the fixed plate on the fan is ensured; the vibrations that the fan during operation produced are absorbed through fixed spring, reduce the vibrations of fan to the minimum, and the fixed plate is laminated with the fan lateral wall mutually under solid fixed ring effect, avoids fan and fixed plate lateral wall to produce the collision, plays good guard action to the fan, makes the better vibrations to the fan production of fixed spring do the absorption.
As shown in fig. 13, a first return spring 452 is disposed on a side wall of the first pushing block 451, first sliding blocks are disposed on side walls of two other sides of the first pushing block 451, and a first sliding slot matched with the first sliding block is disposed on an inner wall of the fourth movable cavity; a fourth through hole is formed in the side wall of the fourth movable cavity, a fifth through hole corresponding to the fourth through hole is formed in the sealing door 3, and a push rod 31 penetrates through the fifth through hole; under the mutual matching of the first sliding block and the first sliding groove, the first push block and the second push block are limited, so that the push block is prevented from being separated from the movable cavity, the fixed ring is driven to deform when the push block moves, and the fixing effect of the fixed plate on the fan is improved; the fan is packed into in the fixed frame back, rotates the installation piece, will install in the piece pushes away the main tank body again, covers sealing door, under the push rod effect, can operate the ejector pad by the closing plate at a distance from to fix the fan in fixed frame, promote the fixed effect to the fan, reduce the fixed degree of difficulty to the fan, make the installation of fan more convenient.
The matching of the second push block and the fifth movable cavity is the same as the matching of the first push block and the fourth movable cavity.
As shown in fig. 1, 16 and 17, a guide rod 11 is arranged on the side wall of the main box body 1, a second sliding groove is arranged on the guide rod 11, and a second sliding block matched with the second sliding groove is arranged on the side wall of the sealing door 3; the second sliding groove is of an L-shaped structure so that the sealing door can be embedded into the opening, and the sealing effect of the sealing door on the opening is improved; connecting blocks 34 are arranged on two sides of the fifth through hole, a plurality of second movable grooves are formed in the connecting blocks 34, a first limiting spring is arranged in each second movable groove, a limiting block 341 is arranged at one end of the first limiting spring, a first limiting groove matched with the limiting block 341 is formed in the side wall of the push rod 31, and a cambered surface is arranged at one end of the limiting block 341; after the fan is arranged in the main box body, the cover plate covers the opening, the push rod is pushed into the main box body, the push block is pushed to move towards one end of the movable cavity under the action of the push rod, the inner wall of the first limiting groove is contacted with the limiting block when the push rod moves, and the limiting block is pushed into the second movable groove under the arrangement of the cambered surface at one end of the limiting block, so that the push rod can normally move into the main box body, and the limiting block is prevented from blocking the movement of the push rod; when the push rod pushes the push block to be incapable of moving forward continuously, the limiting block is embedded in the first limiting groove to limit the push rod, so that the push rod provides supporting force for the push block, the fixing ring is continuously in a deformation state, and the fixing effect of the fixing plate on the fan is improved; under the cooperation of the second sliding groove and the second sliding block, the sealing door is matched with the opening in a translation mode, and the push rod is prevented from being damaged when the sealing door is opened.
As shown in fig. 17, a sixth movable cavity is arranged on the push rod 31, a sixth through hole is arranged on the side wall of the first limiting groove, a first push plate 35 is arranged in the first limiting groove, a third connecting plate 351 is movably connected to the side wall of the first push plate 35, a connecting pipe 32 is arranged in the sixth movable cavity, the other end of the third connecting plate 351 is movably connected to the connecting pipe 32, a second return spring is arranged at one end of the connecting pipe 32, a second push plate 321 is arranged on the connecting pipe 32, and the second push plate 321 is inserted into the sixth movable cavity; after the fan is detected, the second push plate is pulled outwards, the second push plate drives the connecting pipe to move, the third connecting plate rotates around the connecting point, the first push plate is pushed to move towards the outer side of the first limiting groove under the action of the third connecting plate, the limiting block in the first limiting groove is pushed out under the action of the first push plate, and the limiting block is disengaged from the first limiting groove so as to draw the push rod out of the fourth through hole and prevent the push rod from blocking the movement of the sealing door; under the effect of the second reset spring, the third connecting plate is continuously in a continuous inclined state, the first push plate is folded on the inner wall of the first limiting groove, and the limiting block can be normally inserted into the first limiting groove, so that the fixing effect is provided for the push rod under the effect of the limiting block.
As shown in fig. 16, a through cavity matched with the connecting pipe 32 is formed in the push rod 31, the diameter of the connecting pipe is the same as that of the through cavity, a threaded rod 33 penetrates through the through cavity, the threaded rod penetrates through the connecting pipe, threads matched with the threaded rod 33 are formed in the inner wall of the through cavity, a fourth connecting plate 332 is arranged at one end of the threaded rod 33, a third push plate 331 is arranged at the other end of the threaded rod, and a seventh movable cavity matched with the third push plate 331 is formed at one end of the push rod 31; after the push rod pushes the push block to move to one end of the movable cavity, the push rod cannot continue to move, the push rod provides supporting force for the push block, the fourth connecting plate is rotated, the fourth connecting plate drives the threaded rod to rotate, the threaded rod pushes the third push plate to move forwards under the threaded fit, the third push plate pushes the push block to continue to move forwards for a certain distance, supporting force is further provided for the fixing ring, the fixing ring provides a better fixing effect for the fixing plate, the contact effect of the fixing plate and the side wall of the fan is improved, the fan to be detected is stably fixed in the fixing frame, and damage to the fan in the detection process is avoided; under screw-thread fit, make the threaded rod possess self-locking function to play the fixed action to the third push pedal, thereby for the ejector pad provides reliable supporting effect, avoid the ejector pad to remove the contact effect that influences fixed plate and fan.
The sealing door is further provided with an eighth through hole, a first push rod is also arranged in the eighth through hole in a penetrating mode, the first push rod in the eighth through hole is matched with the second push block in the fifth movable cavity, and the matching mode of the first push rod in the eighth through hole is the same as that of the first push block and the first push block in the fifth through hole.
As shown in fig. 7, the sealing assembly includes a support ring 24 provided on the inner wall of the first through hole, a sealing plate 25 rotatably connected to the inner wall of the first through hole, and a stopper 26 provided on one side of the sealing plate 25; a third movable groove is formed in the inner wall of the first through hole, a fifth connecting plate 261 is arranged on the side wall of the stop block 26, the fifth connecting plate 261 is rotatably connected into the third movable groove, and supporting springs 262 are respectively arranged on the side walls of two sides of the fifth connecting plate 261; when the first through hole is in a closed state, the sealing plate seals the first through hole, so that the exchange of air flow in the heating cavity and air flow in the main box body is avoided, thermal shock air flow is formed in the main box body, and the performance of the fan is tested; under the mutually supporting of dog and support ring, make the closing plate become vertical state and arrange in first through-hole, avoid the closing plate to take place the upset, promote the sealed effect of closing plate to first through-hole.
As shown in fig. 7, a groove is formed in the inner wall of the connection box 2, a first movable plate 23 is arranged in the groove, a second connection rod 231 is arranged on the first movable plate 23, a sixth connection plate 232 is arranged on the second connection rod 231, a plurality of seventh through holes are formed in the sixth connection plate 232, and a plurality of fourth push plates 233 matched with the sealing plate 25 are arranged on the sixth connection plate 232; a fourth movable groove is formed in the inner wall of the heating cavity, a second movable plate 29 is arranged in the fourth movable groove, a third connecting rod is arranged on the second movable plate 29, a seventh connecting plate 292 is arranged on the third connecting rod, and the first movable plate 23 is fixedly connected to the seventh connecting plate 292; when the first through hole needs to be opened, the second movable plate moves in the fourth movable groove, the second movable plate moves to drive the first movable plate to move, the first movable plate pushes the fourth push plate to move, the sealing plate is pushed to rotate around the connecting point under the action of the fourth push plate, and the sealing plate pushes the stop block to turn over, so that the first through hole is in an opened state; under the arrangement of the seventh through hole, the gas flow on the sixth connecting plate is increased, so that the gas flow in the first through hole is ensured, and the heating treatment is conveniently carried out on the interior of the main box body under the action of the heating cavity; after the temperature in the main box body rises to the preset value, the second movable plate moves back, the baffle plate pushes the sealing plate to turn back under the action of the supporting spring, so that the sealing plate seals the first through hole again, and the automatic reset of the sealing plate is completed.
As shown in fig. 9 and 10, an eighth movable cavity is formed in the first movable plate, a plurality of ninth through holes are formed in the first movable plate, a baffle 234 matched with the ninth through holes is arranged in the eighth movable cavity, a connecting spring is arranged on the side wall of the baffle, and when the connecting spring is not stressed, the baffle is positioned at the position of the ninth through hole to seal the ninth through hole and is matched with the sealing plate to seal the first through hole; a first electromagnet is arranged in the fourth movable groove, the second movable plate is made of metal iron, and a third return spring 291 is arranged on the inner wall of the fourth movable groove; a fifth movable groove is formed in the inner wall of the groove, a second limiting spring is arranged in the fifth movable groove, a first limiting plate 28 is arranged at one end of the second limiting spring, a second limiting groove matched with the first limiting plate is formed in the side wall of the first movable plate, the second limiting groove is communicated with the eighth movable cavity, a second electromagnet 210 is arranged in the fifth movable groove, and the first limiting plate is made of metal iron; a sixth movable groove is formed in the bottom of the groove, a third limiting spring is arranged in the sixth movable groove, and a second limiting plate 27 is arranged at the top of the third limiting spring; when the first through hole needs to be opened, the first electromagnet is electrified to generate magnetic force, the second movable plate moves in the fourth movable groove, the second movable plate drives the first movable plate to move, the first movable plate moves to the bottom of the groove, the first movable plate pushes the second limiting plate to move in the sixth movable groove, the second limiting plate is moved away from one side of the first limiting plate, after the second limiting groove moves to one side of the first movable plate, the first limiting plate is inserted into the second limiting groove, the first limiting plate pushes the baffle to move in the eighth movable cavity, the baffle is moved away from the ninth through hole, the ninth through hole is in an opened state, airflow normally passes through the first movable plate, meanwhile, the first movable plate moves to drive the fourth push plate to move, the sealing plate is pushed away, and the first through hole is in a conduction state; when the first through hole needs to be closed, the second electromagnet is electrified, the first limiting plate enters the fifth movable groove, the second movable plate moves back under the action of the third reset spring, the second movable plate drives the first movable plate to move, the second limiting plate moves upwards under the action of the third limiting spring, the second limiting plate moves to one side of the fifth movable groove, the first limiting plate is limited under the action of the second limiting plate, the first limiting plate is arranged in the fifth movable groove, and therefore the first limiting plate is enabled to be easier to form matching with the second limiting groove when the first movable plate moves.
When the fan is installed, the sealing door is pulled to the outer side of the opening, the sealing door moves out of the opening, the push rod is pulled outwards, one end of the push rod is placed in the fifth through hole, the sealing door is pushed along the second sliding groove, the installation block is pulled out of the main box body, the installation block is rotated, one end of the fixing frame is arranged outwards, after the fan is installed in the fixing frame, the installation block is rotated, the installation block is pushed into the main box body, the sealing door is pushed along the second sliding groove, and the sealing door is enabled to cover the opening again; promote the push rod toward the internal push rod of trunk, the push rod inserts fourth activity chamber and fifth activity intracavity, it removes at the activity intracavity to promote the ejector pad under the push rod effect, gu fixed ring produces deformation under the ejector pad effect, make the retaining ring provide the extrusion effect to the fixed plate, the fixed plate is pressed and is played the fixed action to the fan on the fan lateral wall, when the push rod can't continue to promote, the rotation threaded rod, make the third push rod continue to move forward, guarantee the fixed effect of fixed plate to the fan, accomplish the installation of fan, so that begin to do the test to the fan.
The high temperature resistance test process of the fan is as follows:
sequence number Process duration Note 1 temperature elevation (ambient temperature-80 deg.C) 30min 2 heating (80 deg.C-250 deg.C) 15min 3 high temperature testing (250 deg.C) 120min 4 thermal shock (250 deg.C-80 deg.C-250 deg.C) 15min 5 high temperature testing (250 deg.C) 1min
And (3) closing the first electromagnetic valve and the second electromagnetic valve when the temperature is increased (the ambient temperature is-80 ℃), closing the exhaust fan and the air feeder, opening the first through hole, starting the test fan, heating the temperature to 80 ℃ through the heating pipe, and setting the temperature-increasing time to be 30 min.
After the temperature rise process is finished, heating (80-250 ℃) to 250 ℃ by a heating pipe in the state of the temperature rise process, and setting the temperature rise time to be 15 min.
After the heating process is finished, the high temperature test process is to keep the heating temperature to 250 ℃ for 120min through an electric heating tube.
After the high-temperature test process is finished, the thermal shock (250-80-250 ℃) process is that the first electromagnetic valve and the second electromagnetic valve are opened firstly, the exhaust fan and the air feeder are opened, the first through hole is closed, the air flow passing through the fan does not pass through the heating pipe, the air flow of the fan impacts with the air flow of the external environment, the first electromagnetic valve and the second electromagnetic valve are opened when the temperature sensor reaches 85 ℃, the exhaust fan and the air feeder are closed when the temperature sensor reaches 80 ℃, the first electromagnetic valve and the second electromagnetic valve are closed simultaneously, the heating temperature of the air flow of the fan reaches 250 ℃, and the whole process time is controlled within 15 min.
And after the thermal shock process is finished, keeping the heating temperature to 250 ℃ for not less than 1min, and finishing the whole testing process.
Claims (8)
1. A high-temperature-resistant testing device for a subway fan comprises a main box body (1) and connecting boxes (2) arranged on two sides of the main box body (1), wherein a first installation box (12) and a second installation box (13) are arranged in the main box body (1), an exhaust fan is arranged in the first installation box (12), a blower is arranged in the second installation box (13), a heating cavity is arranged in the connecting box (2), a heating block (22) is arranged in the heating cavity, and a heating pipe (221) is arranged at the bottom of the heating block (22); the method is characterized in that: an opening is formed in the side wall of the main box body (1), a sealing door (3) is arranged in the opening, an installation block (4) is arranged in the main box body (1), and a fixing frame (41) is arranged on the installation block (4); a plurality of first through holes are formed in the side wall of the main box body (1), the heating cavity is communicated with the main box body (1) through the first through holes, and sealing assemblies are arranged in the first through holes; a second through hole is formed in the side wall of the first installation box (12), a first electromagnetic valve is arranged in the second through hole, a third through hole is formed in the side wall of the second installation box (13), and a second electromagnetic valve is arranged in the third through hole;
a first movable groove is formed in the bottom of the main box body (1), a first movable block (43) is arranged in the first movable groove, a connecting hole is formed in the first movable block (43), and a connecting shaft (44) matched with the connecting hole is arranged at the bottom of the mounting block (4); a first movable cavity is formed in the mounting block (4), a first connecting plate is arranged in the first movable cavity, a first connecting rod is arranged on the first connecting plate, and a second connecting plate is arranged on the first connecting rod; the sealing assembly comprises a support ring (24) arranged on the inner wall of the first through hole, a sealing plate (25) rotatably connected to the inner wall of the first through hole and a stop block (26) arranged on one side of the sealing plate (25); the inner wall of the first through hole is provided with a third movable groove, the side wall of the stop block (26) is provided with a fifth connecting plate (261), the fifth connecting plate (261) is rotatably connected into the third movable groove, and the side walls of the two sides of the fifth connecting plate (261) are respectively provided with a supporting spring (262).
2. The subway fan high temperature resistance testing device according to claim 1, characterized in that: a plurality of fixed springs (411) are arranged on the inner wall of the fixed frame (41), one ends of the fixed springs (411) are provided with fixed plates (412), and the fixed plates (412) are in multiple groups and are circumferentially arranged on the inner wall of the fixed frame (41); the mounting block (4) is provided with a second movable cavity, an air pressure rod (42) is arranged in the second movable cavity, and a supporting block (421) is arranged at the top of the air pressure rod (42).
3. The subway fan high temperature resistance testing device according to claim 1, characterized in that: be equipped with on fixed frame (41) inner wall and fix ring (45), fixed ring (45) form for the elastic sheet winding, fixed frame (41) top is equipped with connecting block (413), be equipped with on connecting block (413) with fixed frame (41) inside communicating fourth activity chamber, be equipped with on installation piece (4) with fixed frame (41) inside communicating fifth activity chamber, fixed ring (45) both ends are equipped with first ejector pad (451) and second ejector pad respectively, first ejector pad (451) are located in the fourth activity chamber, the second ejector pad is located in the fifth activity chamber.
4. The subway fan high temperature resistance testing device according to claim 3, characterized in that: a first return spring (452) is arranged on the side wall of the first push block (451), first sliding blocks are arranged on the side walls of the other two sides of the first push block (451), and a first sliding groove matched with the first sliding blocks is arranged on the inner wall of the fourth movable cavity; a fourth through hole is formed in the side wall of the fourth movable cavity, a fifth through hole corresponding to the fourth through hole is formed in the sealing door (3), and a push rod (31) penetrates through the fifth through hole.
5. The subway fan high temperature resistance testing device according to claim 4, characterized in that: a guide rod (11) is arranged on the side wall of the main box body (1), a second sliding groove is formed in the guide rod (11), and a second sliding block matched with the second sliding groove is arranged on the side wall of the sealing door (3); fifth through-hole both sides are equipped with connecting block (34), be equipped with a plurality of second activity grooves on connecting block (34), be equipped with first spacing spring in the second activity groove, first spacing spring one end is equipped with stopper (341), be equipped with on push rod (31) lateral wall with stopper (341) matched with first spacing groove, stopper (341) one end is equipped with the cambered surface.
6. The subway fan high temperature resistance testing device according to claim 5, characterized in that: be equipped with the sixth movable chamber on push rod (31), be equipped with the sixth through-hole on the first spacing groove lateral wall, first spacing inslot is equipped with first push pedal (35), swing joint has third connecting plate (351) on first push pedal (35) lateral wall, be equipped with connecting pipe (32) in the sixth movable chamber, third connecting plate (351) other end swing joint in on connecting pipe (32), connecting pipe (32) one end is equipped with second reset spring, be equipped with second push pedal (321) on connecting pipe (32), second push pedal (321) are worn to locate in the sixth movable chamber.
7. The subway fan high temperature resistance testing device according to claim 6, characterized in that: be equipped with on push rod (31) with connecting pipe (32) matched with leads to the chamber, lead to the intracavity and wear to be equipped with threaded rod (33), lead to be equipped with on the intracavity wall with threaded rod (33) matched with screw thread, threaded rod (33) one end is equipped with fourth connecting plate (332), and the other end is equipped with third push pedal (331), push rod (31) one end be equipped with third push pedal (331) matched with seventh movable chamber.
8. The subway fan high temperature resistance testing device according to claim 1, characterized in that: a groove is formed in the inner wall of the connecting box (2), a first movable plate (23) is arranged in the groove, a second connecting rod (231) is arranged on the first movable plate (23), a sixth connecting plate (232) is arranged on the second connecting rod (231), a plurality of seventh through holes are formed in the sixth connecting plate (232), and a plurality of fourth push plates (233) matched with the sealing plate (25) are arranged on the sixth connecting plate (232); the heating cavity is provided with a fourth movable groove on the inner wall, a second movable plate (29) is arranged in the fourth movable groove, a third connecting rod is arranged on the second movable plate (29), a seventh connecting plate (292) is arranged on the third connecting rod, and the first movable plate (23) is fixedly connected to the seventh connecting plate (292).
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| CN112530634B (en) * | 2020-11-30 | 2022-05-10 | 沧州会友线缆股份有限公司 | Fireproof cable |
| CN113137389B (en) * | 2021-04-25 | 2023-01-03 | 浙江上风高科专风实业股份有限公司 | Long cantilever high-temperature fan |
| CN113865277A (en) * | 2021-10-22 | 2021-12-31 | 河南泓医药业有限公司 | Production device and production method of thesium chinense (lyophilized) powder |
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Address after: 1818 Renmin West Road, Dongguan Street, Shangyu District, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Shangfeng high tech special wind industry Co.,Ltd. Address before: 312000 No. 1818, Renmin West Road, Dongguan Street, Shangyu District, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG SHANGFENG HI-TECH SPECIALIZED WIND INDUSTRIAL Co.,Ltd. |