CN209416737U - A kind of gas source generating means and the pressure decay test system comprising it - Google Patents
A kind of gas source generating means and the pressure decay test system comprising it Download PDFInfo
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- CN209416737U CN209416737U CN201920070872.3U CN201920070872U CN209416737U CN 209416737 U CN209416737 U CN 209416737U CN 201920070872 U CN201920070872 U CN 201920070872U CN 209416737 U CN209416737 U CN 209416737U
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Abstract
The utility model discloses a kind of gas source generating means and include its pressure decay test system, belong to tunnel protection door detection technique field, it has the ontology of seal chamber by setting, the actuator for being correspondingly arranged the reciprocal executive item of cavity in seal chamber and it being driven to move back and forth, and it corresponds to and offers corresponding interface in seal chamber two sides, and corresponding pipeline and check valve assembly are set, by the trend of gas in check valve assembly control seal chamber, so as to carry out the compression of gas in two air accumulators or vacuumize, to realize the generation of the positive and negative wind pressure operating condition of pressure decay test.The gas source generating means and pressure decay test system of the utility model, structure is simple, control is easy, application state of the tunnel protection door in tunnel can effectively be simulated, testing program multiplicity, test result accuracy is high, can design for the structure of tunnel protection door and provide foundation with Matching installation, guarantee the stability of tunnel protection door application and the safety of tunnel operation, has good promotion and application value.
Description
Technical field
The utility model belongs to tunnel protection door detection technique field, and in particular to a kind of gas source generating means and includes it
Pressure decay test system.
Background technique
In recent years, railway construction in China high speed development constantly shortens " time gap " between each region.With railway
The raising of running speed requires also to increase accordingly to the construction criteria of infrastructure, and weight of the railway tunnel as railway capital construction
Component part is wanted, plays highly important effect during rail track passes through natural elevation obstacle or impediment in plane.
According to railway tunnel application environment and the difference of demand, setting form is also had nothing in common with each other, as one-tunnel one-track tunnel,
Double hole single-track tunnels, one-tunnel two-tracks tunnel etc..In railway tunnel, when train operation passes through, due to train sectional area and tunnel
Road sectional area it is bigger, and length of tunnel is longer, and train running speed is very fast, thus train can generate larger side in tunnel
To " piston effect " of wind pressure.And in railway tunnel, it is usually provided with the cavern of place apparatus, transverse passage-way (is connected to double holes tunnel
Road), emergency evacuation channel etc., and tunnel protection door is often provided in above-mentioned channel or cavern, to play fire prevention, antiknock, anti-
Only equipment damage and the effects of safe support personnel.In the application process of tunnel protection door, since tunnel protection door is in tunnel
In by positive and negative piston wind action, the variation of door body Yu the positive negative stress of tunnel connecting portion is caused, when positive and negative stress variation is super
When crossing its fatigue limit, it is be easy to cause the destruction of tunnel protection door junction, even more so that door body falls to rail side, serious shadow
The traffic safety in tunnel is rung, unnecessary loss is caused.
According to Central South University, in 2011, with project of national nature science fund project (51008310), " Railway Tunnel was inscribed
The gas-solid coupled vibrations mechanism of net-fault system and charming appearance and behaviour Fatigue Test Research " and railway parent company exploration project " high-speed rail railway air
Kinetic effect is to research of the tunnel affiliated facility in relation to technical standard " in research contents, calculated by numerical value, can be to train
When running in tunnel, pressure change, train parting VELOCITY DISTRIBUTION in tunnel are proved.Result of study show for
The one-tunnel two-tracks tunnel of 350km/h, the positive and negative Piston Action Wind wind pressure in tunnel can convert between+10kPa to -10kPa.
In the prior art, to fully ensure that the safe operation of railway tunnel and the service life of tunnel protection door, often
Need to optimize the fixed form and structural behaviour of tunnel protection door, and to the tunnel protection door after optimization design into
Row structural clays, to ensure that the structural behaviour of tunnel protection door can sufficiently meet the application in tunnel.In tunnel protection
In the structural clays of door, pressure decay test is the important tests that tunnel protection door needs to carry out, and test result is often
It can reflect application state and life cycle of the tunnel protection door under Piston Action Wind effect, to the structure and arrangement of tunnel protection door
Design has fabulous directive significance；Currently, for the pressure decay test of tunnel protection door on-the-spot test can only be relied on substantially, no
There is only some potential safety problemss, and its test sample amount is smaller, test condition is more single, is difficult test result analogy
Using there are biggish limitations, constrain the security application of tunnel protection door.
Utility model content
One or more of aiming at the above defects or improvement requirements of the prior art, the utility model provides one kind
Gas source generating means and pressure decay test system comprising it, can effectively simulate when tunnel protection door is applied in tunnel by Piston Action Wind
Application environment when effect realizes the pressure decay test of tunnel protection door, promotes the accuracy of tunnel protection door pressure decay test, is tunnel
Structure design and the Matching installation of road protective door provide foundation, guarantee the stability and safety of the application of tunnel protection door.
To achieve the above object, the one aspect of the utility model provides a kind of gas source generating means, is used for protective door group
The generation of positive wine pressure operating condition and negative wind pressure operating condition during part pressure decay test, including ontology, which is characterized in that further include that cavity is past
Multiple executive item and driving assembly,
There is elongated seal chamber, the reciprocal executive item of cavity is that shape and the seal chamber are transversal in the ontology
The identical plate structure in face is correspondingly arranged in the seal chamber and the seal chamber can be divided into mutually independent first gas
Chamber and the second air cavity, the driving component correspond to the reciprocal executive item setting of the cavity, it is reciprocal can to correspond to the driving cavity
Executive item moves back and forth along its length in the seal chamber；And
The side of the ontology offers the first interface and second interface for being connected to first air cavity, and the other side opens up
There are the third interface and the 4th interface for being connected to second air cavity, has then been connected respectively pipeline on four interfaces, i.e.,
One pipeline, the second pipeline, third pipeline and the 4th pipeline, first pipeline can be used for being connected to the first air accumulator, the third
Pipeline can be used for being connected to the second air accumulator, and second pipeline and the 4th pipeline are respectively communicated with atmosphere；And
The corresponding pipeline is provided with check valve assembly comprising the first check valve on first pipeline is set,
Second one-way valve on second pipeline is set, and the third check valve being arranged on the third pipeline, and setting
The 4th check valve on the 4th pipeline；Wherein, first check valve inlet is connected to first air cavity, and described the
The air inlet of two check valves is connected to atmosphere, and the gas outlet of the third check valve is connected to second air cavity, and the described 4th is single
Second air cavity is connected to the air inlet of valve；Then the movement by the reciprocal executive item of the cavity in the seal chamber,
The generation and the generation of negative wind pressure operating condition in second air accumulator of positive wine pressure operating condition in first air accumulator can be achieved.
The side of the ontology corresponds to the seal chamber and offers guide groove as a further improvement of the utility model, and
The reciprocal executive item of the cavity is corresponded in the guide groove is provided with sliding block；
The axis of the guide groove is parallel to the length direction of the seal chamber, and the sliding block Corresponding matching is embedded in the guide groove
In, and can be moved back and forth along the axis of the guide groove, and one end of the reciprocal executive item of the cavity is fixedly connected on the sliding block
Side wall on, the reciprocal shifting of the reciprocal executive item of cavity in the seal chamber is driven with the reciprocating movement by the sliding block
It is dynamic.
Through slot is offered between the guide groove and the seal chamber as a further improvement of the utility model, and right
It should be provided through the connecting rod of the through slot, and the both ends of the connecting rod are respectively fixedly connected with the one of the reciprocal executive item of the cavity
The side wall surface of side and the sliding block.
Corresponded in the side wall surface of the seal chamber as a further improvement of the utility model, the through slot offer it is close
Guide groove is sealed, and is correspondingly arranged between the connecting rod and the reciprocal executive item of the cavity the embeddable possum belly and will be described
The sealing sliding block that through slot and the seal chamber separate；
The elongated plate structure of the sealing sliding block, the structure of the possum belly are corresponding to it matching, then described
The side of the reciprocal executive item of cavity is connected on the sealing sliding block, and the end of the connecting rod is correspondingly connected with the sealing and slides
Block.
The driving component includes revolving part, reciprocating member and motor as a further improvement of the utility model,；Wherein,
The reciprocating member is correspondingly arranged at the sliding block on a side end face of the seal chamber comprising between circumferentially
Four stroke guide grooves being set on the sliding block end face every 90 °, the stroke guide groove include two circumferentially spaced spacings
From protrusion；
The revolving part corresponds to the reciprocating member setting comprising the coaxially connected connecting shaft with the output shaft of the motor,
Be set to two swing arms of the connecting shaft on described motor one end, in 90 ° of settings between two swing arms, and respectively with
End connects the connecting shaft, and its length direction is parallel to the end face of the sliding block and each swing arm deviates from the connecting shaft
One end end face on correspond to the reciprocating member and be provided with idler wheel, then two idler wheels can the two adjacent strokes of Corresponding matching
Guide groove, and the sliding block can be driven to move back and forth by the rotation of the connecting shaft.
The other side of the utility model provides a kind of pressure decay test system, it includes the gas source generating means,
It is characterized in that,
Including the first air accumulator, the second air accumulator, three-position four-way electromagnetic directional valve and clamping mechanism；Wherein,
First air accumulator connection corresponding with first pipeline, second air accumulator are corresponding with the third pipeline
Connection, and the gas outlet of first check valve is made to be connected to first air accumulator, and the air inlet of the third check valve
It is connected to second air accumulator；
The three-position four-way electromagnetic directional valve is set between the clamping mechanism and two air accumulators, and there are two air inlets for tool
Mouth and two gas outlets, two air inlets are connected to first air accumulator and institute with the second gas circuit correspondence with the first gas circuit respectively
The second air accumulator is stated, and two gas outlets are protected with third gas circuit with corresponding be connected in the clamping mechanism of the 4th gas circuit respectively
The air pressure cavity of door component two sides, to form corresponding wind pressure operating condition in the protection door component two sides, to complete described anti-
Protect the pressure decay test of door component.
Electromagnetism is provided in first gas circuit and/or second gas circuit as a further improvement of the utility model,
Switch valve, to realize the connection or disconnection of corresponding pipeline.
Control is provided in the third gas circuit and/or the 4th gas circuit as a further improvement of the utility model,
Pressure valve, with the size of the corresponding control protection door component two sides wind pressure operating condition.
First air accumulator is corresponded to as a further improvement of the utility model, and second air accumulator is respectively set
There is pressure transmitter, the wind pressure operating condition in air accumulator is corresponded to real-time monitoring.
Above-mentioned improved technology feature can be combined with each other as long as they do not conflict with each other.
In general, have the above technical solutions conceived by the present invention are compared with the prior art, with following
Beneficial effect:
(1) the gas source generating means of the utility model, by being correspondingly arranged the ontology with seal chamber, in seal chamber
It is correspondingly arranged the reciprocal executive item of cavity, and the actuator that the reciprocal executive item setting of respective chamber can drive it to move back and forth, and right
Corresponding interface, and the corresponding pipeline of setting and check valve assembly should be opened up in seal chamber two sides, be controlled by check valve assembly
It is anti-effectively to realize tunnel so as to carry out the compression of gas in two air accumulators or vacuumize for the trend of gas in seal chamber
The generation for protecting the positive and negative wind pressure operating condition of door, ensure that accurately controlling for the wind pressure operating condition during protective door pressure decay test, improves
The accuracy of pressure decay test ensure that the stabilization of wind pressure operating condition during pressure decay test, reduce the error of pressure decay test；
(2) the gas source generating means of the utility model, by setting by the driving of reciprocating member, revolving part and motor form
Component effectively realizes the reciprocal driving of sliding block and the reciprocal executive item of cavity, and the setting of driving assembly is easy, and control is simple, quasi-
True property is high, can fully ensure that the corresponding of wind pressure operating condition is generated and controlled in two air accumulators, simplifies the control of gas source generating means
Process improves the working efficiency of gas source generating means；
(3) the gas source generating means of the utility model, by respective chamber reciprocal executive item setting sealing sliding block and close
Guide groove is sealed, separating for seal chamber and guide groove has been effectively ensured, has improved the leakproofness of seal chamber, ensure that gas source generating means
Working efficiency shortens the test period of pressure decay test, reduces the cost of protective door pressure decay test, also ensures that gas source generates
The safe handling of device；
(4) the utility model includes the pressure decay test system of gas source generating means, passes through setting gas source generating means, two
The components such as a air accumulator, three-position four-way electromagnetic directional valve form positive wine pressure operating condition and negative wind pressure in two air accumulators respectively
Operating condition, and the protection door component two wind pressure operating condition being transmitted in clamping mechanism is corresponded to by three-position four-way electromagnetic directional valve
Side effectively realizes the pressure decay test on the arbitrarily unilateral end face of protection door component or both sides of the face, it is anti-effectively to simulate tunnel
Shield door in tunnel when applying by the situation of Action of Wind pressure, it is ensured that the diversity of pressure decay test scheme and test result it is accurate
Property；
(5) the utility model includes the pressure decay test system of gas source generating means, by 3-position 4-way electromagnetic switch
Electromagnetic switch valve is set between valve and two air accumulators, and three-position four-way electromagnetic directional valve with clamp corresponding between testing stand set
Control pressure valve is set, the on-off control that protection door component two sides correspond to gas circuit is not only realized, also achieves wind pressure working condition pressure
Accurately control, not only increase the diversity of testing program, also further ensure the accuracy of pressure decay test, reduce test
Test error in the process；
(6) the utility model includes the pressure decay test system of gas source generating means, by by gas source generating means, pressure
The valve bodies such as transmitter, electromagnetic switch valve, three-position four-way electromagnetic directional valve, electromagnetic switch valve correspond in access control system, by controlling
The working condition of the corresponding control corresponding intrument of system processed or valve body, and monitor the wind in the working condition and corresponding mechanism of each valve body
Size is pressed, the accurate measurements of air pressure operating condition in pressure decay test system are effectively realized and is adjusted in real time, it is ensured that pressure decay test control
The accuracy of system shortens the test period of tunnel protection door pressure decay test, improves the efficiency of pressure decay test, reduces wind pressure
The cost of test；
(7) the gas source generating means of the utility model and the pressure decay test system comprising it, structure is simple, control letter
Just, the generation of positive and negative wind pressure operating condition during pressure decay test can be effectively realized, and then accurate simulation tunnel protection door is in tunnel
Various application states under by Piston Action Wind effect, the alternative of testing program is strong, and the accuracy of test result is high, anti-for tunnel
The structure design for protecting door provides foundation with Matching installation, reduces the failure in application process of tunnel protection door or falls off, protects
The safety and stability for demonstrate,proving railway tunnel operation, avoids unnecessary economic loss, has fabulous application and popularization value.
Detailed description of the invention
Fig. 1 is the schematic perspective view of gas source generating means in the utility model embodiment；
Fig. 2 is the structural side view of gas source generating means in the utility model embodiment；
Fig. 3 is the ontology cross-sectional view of gas source generating means in the utility model embodiment；
Fig. 4 is the revolving part structural schematic diagram of the driving assembly of gas source generating means in the utility model embodiment；
Fig. 5 is the reciprocal executive item of cavity in the utility model embodiment, sliding block and the matching relationship schematic diagram for sealing sliding block；
Fig. 6 is the pressure decay test system connection schematic diagram in the utility model embodiment comprising gas source generating means；
In all the appended drawings, same appended drawing reference indicates identical technical characteristic, specifically: 1. gas source generating means,
101. ontology, 102. seal chambers, 1021. first air cavitys, 1022. second air cavitys, the reciprocal executive item of 103. cavitys, 104. sealings are slided
Block, 105. possum bellies, 106. driving assemblies, 1061. sliding blocks, 1062. guide grooves, 1063. reciprocating members, 1064. revolving parts,
1065. motors, 1066. shaft couplings；2. air accumulator, 201. first air accumulators, 202. second air accumulators；3. door component is protected, 4.
Clamping mechanism；5. check valve assembly, 501. first check valves, 502. second one-way valves, 503. third check valves, 504. the 4th is single
To valve；6. electromagnetic switch valve, 7. three-position four-way electromagnetic directional valves, 8. control pressure valve.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model.
As long as in addition, technical characteristic involved in the various embodiments of the present invention described below each other it
Between do not constitute conflict and can be combined with each other.
Pressure decay test in the preferred embodiment in the utility model for tunnel protection door is provided with wind pressure as shown in Figure 6
Pilot system, wherein pressure decay test system include can produce the gas source generating means 1 and air accumulator 2 of positive/negative wind pressure operating condition, and
It is correspondingly arranged on the three-position four-way electromagnetic directional valve 7 of connection air accumulator 2 and clamping mechanism 4.
Further, it is preferable to which the gas source generating means 1 in embodiment are as shown in Fig. 1~5 comprising ontology 101, cavity
Reciprocal executive item 103 and driving assembly 106；It wherein, include elongated seal chamber 102 in ontology 101, cavity back and forth executes
Part 103 is shape plate structure identical with 102 cross section of seal chamber, is correspondingly arranged in seal chamber 102, and will sealing
Chamber 102 is divided into the first air cavity 1021 and the second air cavity 1022, so the reciprocal executive item 103 of cavity can in seal chamber 102 edge
Chamber axis moves back and forth, with the corresponding size for changing the first air cavity 1021 and the second air cavity 1022.
Further, it is preferable to which the reciprocal executive item 103 of respective chamber is provided with driving assembly 106 in embodiment, for driving
The reciprocating movement of the reciprocal executive item 103 of cavity comprising sliding block 1061, corresponding seal chamber 102 are set to 101 side of ontology
Guide groove 1062 and motor 1065, wherein 1061 Corresponding matching of sliding block is embedded in guide groove 1062, and the one of the reciprocal executive item 103 of cavity
Side is fixedly connected with sliding block 1061 by connecting rod, and correspondingly, respective link offers axis between seal chamber 102 and guide groove 1062
Line is parallel to the through slot of 1062 axis of guide groove, i.e., connecting rod is horizontally through through slot, and is correspondingly connected with 1061 He of sliding block with both ends
The reciprocal executive item 103 of cavity, then the reciprocatingly sliding in guide groove 1062 of sliding block 1061 can drive the reciprocal executive item 103 of cavity to exist
Reciprocatingly sliding in seal chamber 102.
It is further preferred that as shown in Figure 5, in preferred embodiment the reciprocal executive item 103 of cavity and sliding block 1061 it
Between be additionally provided with sealing sliding block 104, and corresponding sealing sliding block 104 offers possum belly 105 on the side wall of seal chamber 102,
The width of possum belly 105 is greater than the width of through slot, i.e. the width of sealing sliding block 104 is greater than the width of connecting rod, and then sealing is slided
Block 104 is correspondingly embedded in possum belly 105, and can be separated through slot is corresponding with seal chamber 102, to fully ensure that seal chamber 102
Leakproofness；Further, it is preferable to which 105 length of possum belly in embodiment is greater than the length of through slot, and make sliding block 1061
When moving to 1062 one end of guide groove, between the through slot and seal chamber 102 of the other end can still can by sealing sliding block 104 every
It opens, to guarantee the leakproofness of seal chamber 102.
Further, it is preferable to which the driving assembly 106 in embodiment is provided with back and forth between motor 1065 and sliding block 1061
Part 1063 and revolving part 1064, the reciprocating member 1063 in preferred embodiment are fixed at sliding block 1061 away from seal chamber 102
On one side end face, as shown in fig. 1, including it is arranged in parallel with 1061 end face of sliding block and is fixedly connected with 1061 side end face of sliding block
Plate body, and interval 90 ° of four stroke guide grooves being circumferentially arranged on plate body end face, each stroke guide groove is preferably by being arranged in plate
A pair of of convex block composition on body end face, and then eight convex blocks are circumferentially provided on the end face of plate body, between adjacent two convex block
Between be separated with certain distance, and between be separated between two convex blocks an of convex block and be set at 90 ° intervals.
Further, it is preferable to which the revolving part 1064 in embodiment is as shown in Figure 4 comprising connecting shaft and setting are in connecting shaft one
Two swing arms at end are set at 90 ° intervals between two swing arms, and the end of two swing arms is respectively arranged with idler wheel, the axis of two swing arms
It is parallel to the plate body end face of reciprocating member 1063, and the axis of idler wheel is perpendicular to above-mentioned plate body end face, and then the two of revolving part 1064
Swing arm can be corresponded to be matched with the stroke guide groove of reciprocating member 1063, as shown in fig. 1；Further, the other end of connecting shaft passes through connection
Axis device 1066 is correspondingly connected with the output revolving shaft of motor 1065, and then the output revolving shaft rotation of motor 1065 can correspond to drive and work day and night
It is dynamic, and drive reciprocating member 1063 to move back and forth by revolving part 1064 in turn, i.e. band movable slider 1061 back and forth moves in guide groove 1062
It is dynamic, to realize the adjusting control of two air cavitys in seal chamber 102.
Further, it is preferable to respectively correspond the first air cavity 1021 on ontology 101 in embodiment and the second air cavity 1022 is set
It sets there are two air-path interface, as shown in Figures 2 and 3, i.e., is correspondingly arranged that there are four air-path interfaces on ontology 101, specifically includes
101 side of ontology is set and the first interface and second interface of the first air cavity 1021 can be connected to, and setting is another in ontology 101
Side and the third interface and the 4th interface that the second air cavity 1022 can be connected to.
Further, the seal chamber 102 of corresponding ontology 101 is provided with air accumulator 2 comprising corresponding first air cavity 1021
Second air accumulator 202 of the first air accumulator 201 and corresponding second air cavity 1022 setting that are arranged.Further, it is preferable to embodiment
In first interface by the first pipeline the first air accumulator 201 of corresponding connection, and it is unidirectional that first is correspondingly arranged on the first pipeline
Valve 501, the air inlet of the first check valve 501 are connected to the first air cavity 1021, and gas outlet is connected to the first air accumulator 201, so that the
Gas in one pipeline can only flow to the first air accumulator 201 from the first air cavity 1021, and can not be flowed to from the first air accumulator 201
One air cavity 1021；Meanwhile corresponding second interface is provided with even open to atmosphere second pipeline, is correspondingly arranged on second on the second pipeline
Check valve 502, the air inlet of second one-way valve 502 are connected to atmosphere, and gas outlet is connected to the first air cavity 1021, so that in the second pipeline
Gas the first air cavity 1021 can only be flowed to from atmosphere, and atmosphere can not be flowed to from the first air cavity 1021.
Correspondingly, the second air accumulator 202 is by the corresponding connection third interface of third pipeline, and is correspondingly arranged on third pipeline
There is third check valve 503, air inlet is connected to the second air accumulator 202, and gas outlet is connected to the second air cavity 1022, so that third pipeline
In gas can only flow to the second air cavity 1022 from the second air accumulator 202, and the second gas storage cannot be flowed to from the second air cavity 1022
Tank 202；Further, open to atmosphere 4th pipeline of the company of being correspondingly arranged on the 4th interface is provided with the 4th on the 4th pipeline
Check valve 504, air inlet are connected to the second air cavity 1022, and gas outlet is connected to atmosphere, so that gas in the 4th pipeline can only be from
Second air cavity 1022 flows into atmosphere, and can not flow into the second air cavity 1022 from atmosphere.
And then by the reciprocating movement of the reciprocal executive item 103 of cavity in gas source generating means 1, it can correspond to and complete following mistake
Journey:
Process one: the reciprocal executive item 103 of cavity moves linearly from left to right, i.e. the space of the first air cavity 1021 increases, the
The space of two air cavitys 1022 reduces.At this point, gas is entered in the first air cavity 1021 by second one-way valve 502, and the second air cavity
Gas in 1022 is discharged into atmosphere by the 4th check valve 504, at this time the first check valve 501, in third check valve 503 without gas
Body passes through.
Process two: the reciprocal executive item 103 of cavity moves linearly from right to left, i.e. the space of the first air cavity 1021 reduces, the
The space of two air cavitys 1022 increases.At this point, the gas in the first air cavity 1021 flows into the first air accumulator by the first check valve 501
In 201, and the gas in the second air accumulator 202 is drawn into the second air cavity 1022 by third check valve 503, i.e., to first
Compressed gas in air accumulator 201, and the second air accumulator 202 is vacuumized, to form positive pressure work in the first air accumulator 201
Condition forms negative pressure operating condition in the second air accumulator 202.
It is further preferred that respectively correspond the first air accumulator 201 and the second air accumulator 202 is provided with pressure transmitter, with
The pressure value of the fact two air accumulators of display, realizes the real time monitoring to two air accumulator wind pressure operating conditions；Further, correspondence clamps machine
Structure 4 and two air accumulators are provided with three-position four-way electromagnetic directional valve 7 comprising left position, right position and stop position, i.e., three, and it is wrapped
Four interfaces: two air inlets and two gas outlets are included, two of them air inlet is stored up with the first air accumulator 201 and second respectively
The corresponding connection of gas tank 202, and two gas outlets are connected to the two sides A, B gas that door component 3 is protected in clamping mechanism 4 by pipeline respectively
Press space, i.e. realization four-way.
And then three-position four-way electromagnetic directional valve 7 can carry out the switching of following three kinds of states:
State one: three-position four-way electromagnetic directional valve 7 is in left position, and the side A of protection door component 3 generates suction, and the side B generates pressure
Power.The negative wind pressure operating condition of tunnel protection door is simulated with this.
State two: three-position four-way electromagnetic directional valve 7 is in right position, and the side A of protection door component 3 generates pressure, and the side B generates suction
Power.Tunnel protection door positive wine pressure operating condition is simulated with this.
State three: three-position four-way electromagnetic directional valve is in stop position, and tunnel protection door clamping mechanism 4 does not work.
By the switching of above-mentioned state, the alternating simulation for realizing the positive and negative wind pressure operating condition of tunnel protection door can be corresponded to, is completed anti-
Protect the pressure decay test of door component 3.
It is further preferred that between three-position four-way electromagnetic directional valve 7 and the first air accumulator 201, the second air accumulator 202
Electromagnetic switch valve 6 is respectively arranged on pipeline, by controlling corresponding electromagnetic switch valve 6, it can be achieved that corresponding pipeline and three four
The connection of electric change valve 7, to can realize 3 unilateral side of protective door component by Action of Wind pressure and bilateral by wind pressure active state
Switching, and guarantee protective door clamping mechanism 4 using safe.It is further preferred that respectively corresponding three-position four-way electromagnetic directional valve 7
It is provided with control pressure valve 8 on two pipelines between clamping mechanism 4, i.e., protects door component 3A, B two sides air pressure space in connection
Pipeline on be provided with control pressure valve 8, can control enter protection 3 two sides of door component wind pressure operating condition size, realize wind pressure
Operating condition accurately controls.
It is further preferred that corresponding gas source generating means 1, three-position four-way electromagnetic directional valve 7, electromagnetic switch valve 6 and control
Pressure valve 8 etc. is provided with control system, so that above-mentioned apparatus or valve body correspond in access control system, is then united by control system
One realizes the monitoring of corresponding intrument or valve body, control, and realizes the linkage control between each valve body, to realize two gas storage
The accurate control of air pressure operating condition in tank realizes that the corresponding of protection 3 two sides wind pressure operating condition of door component is adjusted, completes pressure decay test operating condition
Accurate adjusting.
It further, can be right when carrying out pressure decay test using the pressure decay test system in the preferred embodiment in the utility model
Should carry out protection door component 3 deformation test and antifatigue test, wherein deformation test exists mainly for detection of tunnel protection door
Pressure difference is gradually incrementally up under the Action of Wind pressure of certain numerical value, opposite face normal deflection value (value of angular displacement)；Antifatigue detection
Mainly for detection of tunnel protection door in the case where certain pressure difference replaces positive and negative percussion, the energy of damage and dysfunction is resisted
Power.Meanwhile pressure decay test system can also carry out single pass test and bidirectional experimental, wherein single pass test is referred to tunnel protection
It is always positive pressure or negative pressure in the pressure process of door, there is no the switchings of positive and negative wind pressure operating condition, and the course of work is substantially are as follows: pre-
Standby pressurization+(detection pressurization+pressure stabilizing) (circulation)+terminates；And bidirectional experimental refers to involved in the pressure process of tunnel protection door
The alternating of positive and negative wind pressure switches, and the course of work is substantially are as follows: and preparation pressurization+(detection positive pressurization+pressure stabilizing+detection reversely pressurizes+
Pressure stabilizing) (circulation)+terminate.
Specifically, pressure decay test system can be tested by following process:
Firstly, corresponding to the door body for protecting door component 3 according to its practical mounting means firm installation in partition wall, guarantee door
Tilting or deforming do not occur in body, and ensure door body can normally-open and locking, and ensure that partition wall is fixed in clamping mechanism 4
When, door body 301 is in locking states；
Secondly, check corresponding pipeline whether operation irregularity, determine that the first air accumulator 201, the second air accumulator 202, gas source are raw
Whether normal operating conditions is at device 1；If normal, next step operation can be carried out, then correspondence takes adjusting to arrange if abnormal,
It applies；Prepared pressurization is carried out to the pressure decay test system being ready to complete, control gas source generating means 1 are corresponding to generate corresponding wind pressure work
Condition makes in two air accumulators under defined pressure environment；
Again, corresponding control valve is adjusted by control system, realizes the adjusting of protection 3 two sides air pressure of door component；Finally,
Detect whether the air pressure clamped in testing stand in gas circuit space is normal, and needs to carry out the mistake of pressure stabilizing or pressure maintaining according to test
Journey realizes the adjusting and pressure stabilizing of the air pressure operating condition acted in protection door component 3 then by the control of corresponding valve body.
Circulation proceeds as described above, and completes the pressure decay test of protection door component 3.
When carrying out tunnel protection door pressure decay test using the pressure decay test system in the preferred embodiment in the utility model, according to
Regulation in (TB 10020-2017) " railway tunnel take precautions against natural calamities Evacuation engineering design code " defines the examination of tunnel protection door
Aerial cross sectional is tested having a size of 3000mm × 2000mm, test space is with a thickness of 10mm, the i.e. volume of single side test space
0.06m3, and 1 year inner piston wind action number of delimiting period is 200,000 times.Moreover, in 350km/h one-tunnel two-tracks tunnel,
The wind pressure in tunnel is between+10kPa to -10kPa.Further, the pressure decay test in the preferred embodiment in the utility model is utilized
When system carries out pressure decay test, it is assumed that testing the primary period is 2s, and 200,000 tests can be completed within about 5 days, be greatly reduced
In the period of tunnel protection door test, the efficiency of tunnel protection door pressure decay test is improved, the cost of pressure decay test is reduced.
Gas source generating means in the utility model and the pressure decay test system comprising it, it is raw by being preferably provided with gas source
At the structure of device, in conjunction with being correspondingly arranged for check valve assembly, the generation of positive and negative wind pressure operating condition in two air accumulators is effectively realized
It effectively realizes with maintenance and by being correspondingly arranged three-position four-way electromagnetic directional valve, electromagnetic switch valve, the control components such as pressure valve
The pressure decay test of door component is protected in clamping mechanism.Gas source generating means in the utility model, structure is simple, control letter
Just, precise control is high, can efficiently generate the positive/negative wind pressure operating condition during protective door pressure decay test, guarantees wind pressure operating condition
It generates, adjust, the accuracy of control, and three-position four-way electromagnetic directional valve, electromagnetic switch valve and the control components such as pressure valve are set
It sets, effectively realizes and protect accurately controlling and switching for door component two sides wind pressure operating condition in clamping mechanism, effectively simulate tunnel
Protective door in tunnel using Shi Shoudan effect of Side Wind, double effect of Side Wind, unilateral wind alternating action, bilateral wind alternating action etc. by
Force environment ensure that the diversity of pressure decay test scheme, improve the accuracy of tunnel protection door pressure decay test, reduce test
Error, shorten the period of test, reduce the cost of pressure decay test, be tunnel protection door structure design and Matching installation
Foundation is provided, the failure in application process of tunnel protection door is reduced or is fallen off, ensure that the peace of railway tunnel operation
Full property and stability, avoid unnecessary economic loss, have fabulous application and popularization value.
As it will be easily appreciated by one skilled in the art that the above is only the preferred embodiment of the utility model only, not
To limit the utility model, any modification made within the spirit and principle of the present invention, equivalent replacement and change
Into etc., it should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of gas source generating means, for protecting the life of positive wine pressure operating condition and negative wind pressure operating condition during door component pressure decay test
At including ontology, which is characterized in that it further include the reciprocal executive item of cavity and driving assembly,
There is elongated seal chamber, the reciprocal executive item of cavity is shape and the seal chamber cross section phase in the ontology
With plate structure, be correspondingly arranged in the seal chamber and the seal chamber can be divided into mutually independent first air cavity and
Second air cavity, the driving component correspond to the reciprocal executive item setting of the cavity, can correspond to the driving cavity and back and forth execute
Part moves back and forth along its length in the seal chamber；And
The side of the ontology offers the first interface and second interface for being connected to first air cavity, and the other side offers company
Lead to the third interface and the 4th interface of second air cavity, pipeline, i.e., the first pipe have then been connected respectively on four interfaces
Road, the second pipeline, third pipeline and the 4th pipeline, first pipeline can be used for being connected to the first air accumulator, the third pipeline
It can be used for being connected to the second air accumulator, and second pipeline and the 4th pipeline are respectively communicated with atmosphere；And
The corresponding pipeline is provided with check valve assembly comprising the first check valve on first pipeline is arranged in, is arranged
Second one-way valve on second pipeline, and the third check valve being arranged on the third pipeline, and be arranged in institute
State the 4th check valve on the 4th pipeline；Wherein, first check valve inlet is connected to first air cavity, and described second is single
It is connected to atmosphere to the air inlet of valve, the gas outlet of the third check valve is connected to second air cavity, and the 4th check valve
Air inlet be connected to second air cavity.
2. gas source generating means according to claim 1, wherein the side of the ontology corresponds to the seal chamber and offers
Guide groove, and correspond to the reciprocal executive item of the cavity in the guide groove and be provided with sliding block；
The axis of the guide groove is parallel to the length direction of the seal chamber, and the sliding block Corresponding matching is embedded in the guide groove,
And it can be moved back and forth along the axis of the guide groove, and one end of the reciprocal executive item of the cavity is fixedly connected on the side of the sliding block
On wall, reciprocating movement of the reciprocal executive item of cavity in the seal chamber is driven with the reciprocating movement by the sliding block.
3. gas source generating means according to claim 2, wherein offered between the guide groove and the seal chamber logical
Slot, and it is correspondingly arranged on the connecting rod across the through slot, and the both ends of the connecting rod are respectively fixedly connected with the cavity and back and forth hold
The side wall surface of the side of row part and the sliding block.
4. gas source generating means according to claim 3, wherein correspond to the through slot in the side wall surface of the seal chamber
Possum belly is offered, and is correspondingly arranged on the embeddable possum belly between the connecting rod and the reciprocal executive item of the cavity
And the sealing sliding block for separating the through slot and the seal chamber；
The elongated plate structure of the sealing sliding block, the structure of the possum belly are corresponding to it matching, then the cavity
The side of reciprocal executive item is connected on the sealing sliding block, and the end of the connecting rod is correspondingly connected with the sealing sliding block.
5. the gas source generating means according to any one of claim 2~4, wherein the driving component include revolving part,
Reciprocating member and motor；Wherein,
The reciprocating member is correspondingly arranged at the sliding block on a side end face of the seal chamber comprising circumferentially spaced
90 ° of four stroke guide grooves being set on the sliding block end face, the stroke guide groove include two circumferentially spaced certain distances
Protrusion；
The revolving part corresponds to the reciprocating member setting comprising the coaxially connected connecting shaft with the output shaft of the motor, and set
Two swing arms of the connecting shaft on described motor one end are placed in, are arranged between two swing arms in 90 °, and respectively with end
The connecting shaft is connected, and its length direction is parallel to the end face of the sliding block and each swing arm deviates from the one of the connecting shaft
End corresponds to the reciprocating member and is provided with idler wheel on end face, then two idler wheels can the two adjacent strokes of Corresponding matching lead
Slot, and the sliding block can be driven to move back and forth by the rotation of the connecting shaft.
6. a kind of pressure decay test system, it includes gas source generating means according to any one of claims 1 to 5, feature exists
In,
Including the first air accumulator, the second air accumulator, three-position four-way electromagnetic directional valve and clamping mechanism；Wherein,
First air accumulator connection corresponding with first pipeline, second air accumulator is corresponding with the third pipeline to be connected
It is logical, and make the gas outlet of first check valve be connected to first air accumulator, and the air inlet of the third check valve connects
Lead to second air accumulator；
The three-position four-way electromagnetic directional valve is set between the clamping mechanism and two air accumulators, tool there are two air inlet and
Two gas outlets, two air inlets are connected to first air accumulator and described the respectively with the first gas circuit and the second gas circuit are corresponding
Two air accumulators, and two gas outlets are connected to protective door group in the clamping mechanism with the 4th gas circuit correspondence with third gas circuit respectively
The air pressure cavity of part two sides, to form corresponding wind pressure operating condition in the protection door component two sides, to complete the protective door
The pressure decay test of component.
7. pressure decay test system according to claim 6, wherein set in first gas circuit and/or second gas circuit
It is equipped with electromagnetic switch valve, to realize the connection or disconnection of corresponding pipeline.
8. pressure decay test system according to claim 7, wherein set in the third gas circuit and/or the 4th gas circuit
It is equipped with control pressure valve, with the size of the corresponding control protection door component two sides wind pressure operating condition.
9. the pressure decay test system according to any one of claim 6~8, wherein corresponding first air accumulator and institute
It states the second air accumulator and is respectively arranged with pressure transmitter, the wind pressure operating condition in air accumulator is corresponded to real-time monitoring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920070872.3U CN209416737U (en) | 2019-01-16 | 2019-01-16 | A kind of gas source generating means and the pressure decay test system comprising it |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920070872.3U CN209416737U (en) | 2019-01-16 | 2019-01-16 | A kind of gas source generating means and the pressure decay test system comprising it |
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| Publication Number | Publication Date |
|---|---|
| CN209416737U true CN209416737U (en) | 2019-09-20 |
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ID=67943655
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|---|---|---|---|
| CN201920070872.3U Withdrawn - After Issue CN209416737U (en) | 2019-01-16 | 2019-01-16 | A kind of gas source generating means and the pressure decay test system comprising it |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655299A (en) * | 2019-01-16 | 2019-04-19 | 中铁第四勘察设计院集团有限公司 | A kind of gas source generating means and the pressure decay test system comprising it |
-
2019
- 2019-01-16 CN CN201920070872.3U patent/CN209416737U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655299A (en) * | 2019-01-16 | 2019-04-19 | 中铁第四勘察设计院集团有限公司 | A kind of gas source generating means and the pressure decay test system comprising it |
| CN109655299B (en) * | 2019-01-16 | 2023-10-27 | 中铁第四勘察设计院集团有限公司 | Air source generating device and wind pressure test system comprising same |
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