CN106763953A - Relief valve, charging pile cooling water tank and pressure detection method - Google Patents
Relief valve, charging pile cooling water tank and pressure detection method Download PDFInfo
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- CN106763953A CN106763953A CN201710125545.9A CN201710125545A CN106763953A CN 106763953 A CN106763953 A CN 106763953A CN 201710125545 A CN201710125545 A CN 201710125545A CN 106763953 A CN106763953 A CN 106763953A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a kind of relief valve,Charging pile cooling water tank and pressure detection method,The specific medium channel for media flow in valve body,Valve rod is in medium channel,Wherein medium channel includes medium inlet chamber and media outlet chamber,Look nut is placed in the chamber of medium inlet,It is additionally provided with the chamber of medium inlet and forces valve rod all the time with the elastic component to medium inlet chamber side movement tendency,Look nut is shaped as polygon,There is gap with the inwall in medium inlet chamber in its outer wall,It is arranged in the medium inlet chamber of valve body by by look nut,So that being installed along with the inside of equipment with valve body and then look nut cannot be carried out to rotate regulation operation,And look nut is shaped to polygon,May be only available for particular tool and rotate regulation,Ensure that relief valve in a pre-installation afterwards with cannot be adjusted per family operation,User is avoided because the situation that maloperation rotates look nut occurs,The security when equipment of improve is used.
Description
Technical field
The present invention relates to a kind of safety valve, more particularly to a kind of relief valve, charging pile cooling water tank and pressure detection method.
Background technology
With the progress of society, electric motor car is occurred in that to advocate energy-saving and emission-reduction in the market, electric motor car using electric energy as
Power source, is charged by charging pile, and charging pile in charging process with its internal temperature meeting of the increase in charging interval
Increase, so by can in charging pile install a cooling water tank, coolant can be mounted with cooling water tank, using with
Heat is taken away realization cooling by the various pieces that coolant takes charging pile to by the circulating line of cooling water tank connection.
On the other hand, as coolant is constantly recycled so that the temperature in cooling water tank constantly rises, and radiates
Water tank is usually sealing, and the rising of temperature can cause the pressure inside cooling water tank to increase, can be led when pressure reaches certain value
Cause the tank wall of cooling water tank that cracking situation occurs.It is excessive to solve the problems, such as cooling water tank internal pressure, it will usually in water of radiation
Relief valve is set on case, and after internal pressure reaches relief valve default pressure value, relief valve is opened and carries out pressure release to have played
Full guard is acted on.
General relief valve also known as safety valve（safety valve）Operating pressure energy automatic open close according to system, installs
In protection system safety in the equipment or pipeline of closed system.Relief valve controls the pressure opened by elastic component, and elastic
The elastic force regulation of part is general to be realized by look nut, is just the disclosure of the invention of CN202252197U for example in notification number
A kind of " relief valve ", it passes through valve core cap and is connected with look nut, the more convenient pressure regulation realized to relief valve.Relief valve
Opening pressure typically set before dispatching from the factory, relief valve after dispatching from the factory pressure can not at will because regulation after meeting
Have influence on the safety of whole system, although and pressure regulation process can be efficiently realized in above-mentioned patent, easily after mounting
Maloperation occurs causes the change of pressure, influences the security of whole system.
The content of the invention
First purpose of the invention is not easy to adjust the relief valve of Opening pressure after being to provide a kind of installing.
Above-mentioned technical purpose of the invention technical scheme is that：
A kind of relief valve, including valve body, be arranged in valve body and can be in valve rod and being threadedly connected in axial sliding in valve body
The look nut of valve rod one end, the specific medium channel for medium outflow in the valve body, the valve rod is located in medium channel,
Wherein medium channel includes medium inlet chamber and media outlet chamber, and the look nut is placed in the chamber of medium inlet, described
It is additionally provided with the chamber of medium inlet and forces valve rod all the time with the elastic component to medium inlet chamber side movement tendency, the pressure regulation
Nut is shaped as polygon, and its outer wall has gap with the inwall in medium inlet chamber.
By using above-mentioned technical proposal, look nut is arranged in the chamber of medium inlet, when relief valve is installed to equipment
Or in system after so that look nut is in equipment or internal system simultaneously, and then look nut cannot be turned
Dynamic operation, is secondly shaped to polygon by look nut, can only be extend into the chamber of medium inlet by specific instrument
Could rotate, and user does not have the particular tool so that operation cannot be further adjusted to look nut, it is ensured that
Pressure value of the relief valve after dispatching from the factory is certain, it is ensured that the opening of relief valve, and producer under normal circumstances is to pressure regulation spiral shell
Mother can realize visual regulation when being adjusted by multiple turning preliminary observations of look nut to the angle to rotate.
Preferably, the look nut is provided with identical with medium inlet cavity wall radian in its four corners
Lead cambered surface.
By using above-mentioned technical proposal, the setting for leading cambered surface firstly reduce the stress concentration of look nut corner,
Secondly look nut is avoided that the friction with medium inlet cavity wall in rotation.
Preferably, the medium channel also includes the guide channel in connection medium inlet chamber and media outlet chamber, institute
State the diameter that the diameter that valve rod is arranged in guide channel is less than guide channel.
By using above-mentioned technical proposal, guide channel is set as the guiding to valve rod, improves valve rod in valve body interior axle
To stability when sliding.
Preferably, the annular seal space being connected, the valve are additionally provided between the media outlet chamber and guide channel
Bar away from being provided with bonnet on one end of look nut, the bonnet with diameter greater than the diameter of valve rod and the outer wall of bonnet with it is close
Gap is left between the inwall for sealing chamber, the first O-ring is provided between bonnet and annular seal space.
By using above-mentioned technical proposal, relief valve when being closed, by between bonnet and annular seal space
One O-ring carries out the conducting between sealing blocking medium inlet chamber and media outlet chamber, and annular seal space enters into Jie as medium
Make as the damping to medium in a chamber before matter outlet plenum, the gap existed between the outer wall of bonnet and the inwall of annular seal space
With so that the pressure of equipment or system will not disposably be laid down, and the medium for giving off does not have huge impacting with high pressure,
Avoid the presence of potential safety hazard.
Preferably, the valve body includes embedded section and the threaded connection section with embedded section integral type, described pre-buried
The external diameter of section is provided with the second O-ring in embedded section more than the big footpath of threaded connection section with the junction for being threadedly coupled section.
By using above-mentioned technical proposal, whole relief valve is connected through a screw thread section and is fixed with equipment, using the second O-ring
Improve the sealing of junction.
Preferably, the outer wall of the embedded section is light shaft type, and the media outlet chamber is opened on embedded section, wherein
Media outlet chamber includes the inner hexagonal hole positioned at opening.
By using above-mentioned technical proposal, whole relief valve is installed using pre-buried mode, using handle to inner hexagonal hole
The dismounting realized to relief valve is rotated, the space after installing is reduced, is easy to the installation in small space.
Preferably, the media outlet chamber also includes the pressure regulation groove away from opening side, the diameter of the regulating tank
More than the maximum gauge of inner hexagonal hole.
Set by using the auxiliary pressure regulation that is provided as of above-mentioned technical proposal, pressure regulation groove, can set auxiliary in pressure regulation groove
Help elastic component carries out pressurized treatments come the other end to valve rod away from look nut, can cause originally to be arranged in the chamber of medium inlet
Elastic component after a long time use because elastic failure carries out pressure supplement process, increase the service life of whole relief valve.
Second object of the present invention is to provide a kind of charging pile cooling water tank using safety.
Above-mentioned technical purpose of the invention technical scheme is that：
A kind of charging pile cooling water tank, including casing, offer countersunk head screwed hole, spiral shell on the countersunk head screwed hole on the casing
Line is connected with described relief valve, after described relief valve is installed on casing, the end face of valve body and the outer surface phase of casing
Concordantly.
By using above-mentioned technical proposal, the countersunk head screwed hole that cooling water tank passes through to open up can hide relief valve, pressure release
Valve is installed and will not protruded above on the surface of cooling water tank, reduces cooling water tank space when mounted, and secondly the relief valve exists
After installation cannot user cannot carry out pressure regulation, it is ensured that cooling water tank internal pressure reaches the accurate of certain value relief valve and beats
Open, improve security when using.
Third object of the present invention is to provide the pressure inspection that a kind of relief valve pressure detection operation is convenient and precision is higher
Survey method.
Above-mentioned technical purpose of the invention technical scheme is that：
A kind of pressure detection method of relief valve, comprises the following steps：
1）, pressure testing
Relief valve to be measured is attached on pressure testboard, and the liquid that leaks hunting is painted on relief valve, then carry out first time pressurization, the
Moulding pressure between 16.5 ~ 17.5psi, observing time be 5 ~ 7s between, during this period in if it find that a bubble
Emerge, confirm that the relief valve pressure is relatively low undesirable, this meets letting out for low voltage experiment if not finding a bubble to emerge
Pressure valve carries out second pressurization, second moulding pressure between 18 ~ 19psi, observing time be 5 ~ 7s between, during this period in
If it find that no bubble is emerged, confirm that the pressure of the relief valve is excessive undesirable, if a large amount of bubbles are emerged, confirm
The relief valve meets pressure requirements；
2）, for the first time detect
To be placed by 3.5 ~ 4.5 hours timeliness by the satisfactory relief valve of pressure testing, timeliness is attached to pressure test after placing
On platform and the liquid that leaks hunting is painted, then carry out first time pressurization, between 16 ~ 17psi, observing time is 30 to first time moulding pressure
Between ~ 32s, during this period in if it find that a bubble is emerged, confirm that the relief valve pressure is relatively low undesirable, if not
It was found that bubble is emerged, the relief valve for meeting low voltage experiment carries out second pressurization, and second moulding pressure is in 18 ~ 19psi
Between, observing time is between 28 ~ 30s, during this period in if it find that no bubble is emerged, confirm the pressure mistake of the relief valve
It is big undesirable, if a large amount of bubbles are emerged, confirm that the relief valve meets pressure requirements；
3）Detect for second
The relief valve met after first time is detected was placed by 7.5 ~ 8.5 hours timeliness, timeliness is attached to pressure after placing
On testboard and paint the liquid that leaks hunting, then carry out first time pressurization, first time moulding pressure between 16 ~ 17psi, observing time
For between 30 ~ 32s, during this period in if it find that a bubble is emerged, confirm that the relief valve pressure is relatively low undesirable, such as
Fruit does not find that the bubble relief valve for meeting low voltage experiment of emerging carries out second pressurization, second moulding pressure 18 ~
Between 19psi, observing time is between 28 ~ 30s, during this period in if it find that no bubble is emerged, confirm the relief valve
Pressure is excessive undesirable, if a large amount of bubbles are emerged, confirms that the relief valve meets pressure requirements；
4）Third time is detected
The relief valve met after being detected by second was placed by 23.5 ~ 24.5 hours timeliness, and timeliness is attached to pressure after placing
On power testboard and the liquid that leaks hunting is painted, then carry out first time pressurization, first time moulding pressure is seen between 15.5 ~ 16.5psi
The time is examined between 30 ~ 32s, during this period in if it find that a bubble is emerged, confirm this relief valve pressure be relatively low not meeting
It is required that, if not finding that the bubble relief valve for meeting low voltage experiment of emerging carries out second pressurization, second pressurization pressure
Between 18.5 ~ 19.5psi, observing time is between 28 ~ 30s power, during this period in if it find that no bubble is emerged, confirm
The pressure of the relief valve is excessive undesirable, if a large amount of bubbles are emerged, confirms that the relief valve meets pressure requirements；
5）, surface treatment；
6）, packaging and storage
Will be by rapid 1）~4）The satisfactory relief valve of pressure is collected and packaging and storage afterwards.
By using above-mentioned technical proposal, relief valve by eliminating the underproof product of pressure after pressure testing operation, as the
Primary screening, the product after pressure testing meets passes sequentially through first and is detected to third time and final select the qualified product of pressure and ensure that
The degree of accuracy of selected product pressure value, and using the unlatching situation of the more convenient observation relief valve of the liquid that leaks hunting, secondly exist
Carry out first detected to third time before processed by timeliness placement so that raising is in itself after preceding one pressurized treatments for relief valve
Hardness and intensity so as to relief valve detect pressure value while also improve relief valve physical characteristic in itself indirectly.
Preferably, in step 4）Dispensing operation is carried out to satisfactory relief valve afterwards, using adhesive dispensing device and is utilized
Screw thread glue carries out dispensing to the junction of look nut and valve rod, and half an hour is placed after dispensing is complete, and then dispensing completion is let out
Pressure valve is checked that the place to screw thread glue deficiency carries out glue.
By using above-mentioned technical proposal, dispensing process cause look nut and valve rod have between the two preferably it is fixed with
And sealing function.
In sum, the invention has the advantages that：
1st, it is arranged in the medium inlet chamber of valve body by by look nut so that the inside for being installed along with equipment with valve body is entered
And look nut cannot be carried out to rotate regulation operation, and look nut is shaped to polygon, may be only available for
Particular tool rotates regulation, it is ensured that relief valve is in a pre-installation afterwards with per family cannot being adjusted operating, it is to avoid user due to
The situation that maloperation rotates look nut occurs, the security when equipment of improve is used；
2nd, by by valve body be set to the different embedded section of diameter and threaded connection section, correspondence equipment on offer countersunk head
Screwed hole so that valve body can be entirely contained in countersunk head screwed hole after mounting, reduce the installing space of equipment；
3rd, by setting annular seal space on valve body, gap is left between the outer wall of bonnet and the inwall of annular seal space and plays outlet damping
Effect, it is to avoid high-pressure medium is directly emitted from media outlet chamber, reduces during use and potential safety hazard occurs；
4th, pressure regulation groove is set away from opening side by media outlet chamber, auxiliary elastic member can be embedded in pressure regulation groove and comes right
Valve rod carries out auxiliary pressurized treatment, improves the service life of relief valve.
Brief description of the drawings
Fig. 1 is the sectional view of relief valve in embodiment one；
Fig. 2 is the structural representation of look nut in embodiment one；
Fig. 3 is the exploded perspective view of cooling water tank and relief valve in embodiment two；
Fig. 4 be embodiment two in relief valve be installed to the schematic diagram after cooling water tank；
Fig. 5 is the flow chart of relief valve detection method in embodiment three.
In figure：1st, valve body；1a, upper surface；11st, embedded section；12nd, it is threadedly coupled section；13rd, medium inlet chamber；14th, medium goes out
Oral cavity；141st, inner hexagonal hole；142nd, pressure regulation groove；15th, annular seal space；16th, stopper slot；17th, guide channel；2nd, valve rod；21st, bonnet；
3rd, look nut；31st, guide holder；32nd, adjustment seat；321st, cambered surface is led；4th, elastic component；5th, the first O-ring；6th, the second O-ring；
70th, water tank；71st, countersunk head screwed hole；70a, outer surface.
Specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
Embodiment one
Referring to Fig. 1, a kind of relief valve, including valve body 1, the valve body 1 includes embedded section 11 and the spiral shell with the integral type of embedded section 11
Line linkage section 12, the diameter of wherein embedded section 11 is greater than the big footpath of threaded connection section 12.Have for media flow in valve body 1
Medium channel, is provided with valve rod 2 in medium channel, and the medium can be fluid or gas.
Medium channel includes the medium inlet chamber 13 being opened in threaded connection section 12, the medium being opened in embedded section 11
Outlet plenum 14 and the guide channel 17 in connection medium inlet chamber 13 and media outlet chamber 14, the part of wherein valve rod 2 is located in
Guide channel 17, and one end is placed in medium inlet chamber 13.It is further opened with and connects media outlet chamber 14 in embedded section 11
With the annular seal space 15 of guide channel 17, the diameter of annular seal space 15 is greater than the diameter of guide channel 17 but less than media outlet chamber 14
Diameter.
Media outlet chamber 14 include close to openend inner hexagonal hole 141 and pressure regulation groove 142, pressure regulation groove 142 with it is close
Envelope chamber 15 connects, and the diameter of pressure regulation groove 142 is greater than the maximum gauge of inner hexagonal hole 141.
The end of valve rod 2 is provided with bonnet 21, and the bonnet 21 is placed in annular seal space 15, and can stretch to media outlet chamber
In 14, the diameter of bonnet 21 is less than the diameter of annular seal space 15 so that between the outer wall of bonnet 21 and the inwall of annular seal space 15
Deposit gap.The first O-ring 5 is additionally provided between bonnet 21 and annular seal space 15.
With reference to Fig. 1 and Fig. 2, valve rod 2 is away from one end of bonnet 21 and is arranged in medium inlet chamber 13, and spiral shell on the end
Line is connected with look nut 3, and gap is left between look nut 3 and the inwall in medium inlet chamber 13.Look nut 3 is included
One adjustment seat 32 and there is the guide holder 31 that adjustment seat 32 upwardly extends, adjustment seat 32 is rectangle in the present embodiment, in pressure regulation spiral shell
Female 3 four corners are provided with and lead cambered surface 321, and this leads the inwall radian phase of the radian with medium inlet chamber 13 of cambered surface 321
Together.
A shaft shoulder is formed between guide holder 31 and adjustment seat 32, elastic component 4 is arranged with the guide holder 31, elastic component 4 is excellent
Elect compression spring as, one end of elastic component 4 is connected on the shaft shoulder of look nut 3, and the other end is connected to medium inlet chamber 13
On roof.Medium inlet chamber 13 is being further opened with stopper slot 16 near the side of guide channel 17, and the other end of elastic component 4 is housed
In in the stopper slot 16.
In addition, the outer wall of embedded section 11 is light shaft type, also block with the junction between being threadedly coupled section 12 in embedded section 11
It is connected to the second O-ring 6.
Before dispatching from the factory, producer is inserted into medium inlet chamber 13 by special hand-operated tools, is pinned by valve body 2, is turned
Dynamic look nut 3 causes its elastic force for carrying out regulation elasticity part 4 in the enterprising line slip of valve body 2, and human eye can be with rotation process
Very clear seeing set its angle for rotating due to the rectangle of look nut 3.
When in use, medium enters the relief valve from medium inlet chamber 13, when the pressure in medium inlet chamber 13 is greater than
During the elastic force of elastic component 4, whole valve rod 2 toward the lateral movement of media outlet chamber 14 1 can be promoted, medium after certain position is moved to
Entrance cavity 13 is mutually conducted with media outlet chamber 14, and then medium can be discharged from media outlet chamber 14, plays pressure release effect.
Embodiment two
Referring to Fig. 1 and Fig. 3, a kind of charging pile cooling water tank, including casing offer countersunk head screwed hole 71 on casing, heavy
The relief valve in embodiment one is provided with head thread hole 71, threaded connection section 12 and the spiral shell of countersunk head screwed hole 71 on the relief valve
Line is connected, and embedded section 11 is just placed in countersunk head screwed hole 71.
With reference to Fig. 3 and Fig. 4, after relief valve is installed, the outer surface 70a of upper surface 1a on relief valve just with casing is equal
Together.
Embodiment three
A kind of pressure detection method of relief valve, including following operating procedure：
1）, pressure testing
Relief valve to be measured is attached on pressure testboard, and the liquid that leaks hunting is painted on relief valve, then carry out first time pressurization, the
In 17psi, observing time is 5s to moulding pressure, during this period in if it find that a bubble is emerged, confirm the relief valve
Pressure is relatively low undesirable, if do not find a bubble emerge the relief valve for meeting low voltage experiment carry out second plus
Pressure, in 18.5psi, observing time is s to second moulding pressure, during this period in if it find that no bubble is emerged, confirming should
The pressure of relief valve is excessive undesirable, if a large amount of bubbles are emerged, confirms that the relief valve meets pressure requirements, and to not
Meeting the relief valve of pressure requirements carries out the treatment of pressure regulation again.
2）, for the first time detect
To be placed by 4 hours timeliness by the satisfactory relief valve of pressure testing, timeliness is attached on pressure testboard simultaneously after placing
The liquid that leaks hunting is painted, first time pressurization is then carried out, in 16.5psi, observing time is 30s to first time moulding pressure, during this period
In if it find that a bubble is emerged, confirm that the relief valve pressure is relatively low undesirable, if not finding that a bubble is emerged
The relief valve for meeting low voltage experiment carries out second pressurization, and between 18.5psi, observing time is second moulding pressure
30s, during this period in if it find that no bubble is emerged, confirm that the pressure of the relief valve is excessive undesirable, if big
Amount bubble is emerged, and confirms that the relief valve meets pressure requirements, and relief valve to not meeting pressure requirements is carried out at pressure regulation again
Reason.
3）Detect for second
The relief valve met after first time is detected was placed by 8 hours timeliness, timeliness is attached to pressure testboard after placing
Go up and paint the liquid that leaks hunting, then carry out first time pressurization, first time moulding pressure between 16.5si, observing time be 30s it
Between, during this period in if it find that a bubble is emerged, confirm that the relief valve pressure is relatively low undesirable, if not finding one
The individual bubble relief valve for meeting low voltage experiment of emerging carries out second pressurization, and second moulding pressure is seen between 18.5psi
The time is examined between 30s, during this period in if it find that no bubble is emerged, confirm that excessive not the meeting of the pressure of the relief valve will
Ask, if a large amount of bubbles are emerged, confirm that the relief valve meets pressure requirements, and relief valve to not meeting pressure requirements is carried out
Again pressure regulation treatment.
4）Third time is detected
The relief valve met after being detected by second was placed by 24 hours timeliness, and timeliness is attached to pressure testboard after placing
Go up and paint the liquid that leaks hunting, then carry out first time pressurization, first time moulding pressure between 16psi, observing time be 30s it
Between, during this period in if it find that a bubble is emerged, confirm that the relief valve pressure is relatively low undesirable, if not finding one
The individual bubble relief valve for meeting low voltage experiment of emerging carries out second pressurization, second moulding pressure between 19psi, observation
Time is between 30s, during this period in if it find that no bubble is emerged, confirm that excessive not the meeting of the pressure of the relief valve will
Ask, if a large amount of bubbles are emerged, confirm that the relief valve meets pressure requirements, and relief valve to not meeting pressure requirements is carried out
Again pressure regulation treatment.
5）, dispensing and glue
In step 4）Connection to satisfactory relief valve using adhesive dispensing device and using screw thread glue to look nut and valve rod afterwards
Place carries out dispensing, and half an hour is placed after dispensing is complete, then the relief valve that dispensing is completed is checked, to the ground that screw thread glue is not enough
Fang Jinhang glues.
6）, surface treatment.
7）, packaging and storage.
This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, people in the art
Member can make the modification without creative contribution to the present embodiment as needed after this specification is read, but as long as at this
All protected by Patent Law in the right of invention.
Claims (10)
1. a kind of relief valve, it is characterised in that including valve body（1）, be arranged in valve body（1）It is interior and can be in valve body（1）It is interior axially sliding
Dynamic valve rod（2）And it is threadedly connected to valve rod（2）The look nut of one end（3）, the valve body（1）Interior specific confession media flow
Medium channel, the valve rod（2）In medium channel, wherein medium channel includes medium inlet chamber（13）And medium goes out
Oral cavity（14）, the look nut（3）It is placed in medium inlet chamber（13）It is interior, the medium inlet chamber（13）Inside it is additionally provided with urgent
Make valve rod（2）All the time have to medium inlet chamber（13）The elastic component of side movement tendency（4）, the look nut（3）Shape
Shape is polygon, its outer wall and medium inlet chamber（13）Inwall there is gap.
2. relief valve according to claim 1, it is characterised in that the look nut（3）It is all provided with its four corners
It is equipped with and medium inlet chamber（13）Inwall radian identical leads cambered surface（321）.
3. relief valve according to claim 2, it is characterised in that the medium channel also includes connection medium inlet chamber
（13）With media outlet chamber（14）Guide channel（17）, the valve rod（2）It is arranged in guide channel（17）Interior diameter is small
In guide channel（17）Diameter.
4. relief valve according to claim 3, it is characterised in that the media outlet chamber（14）With guide channel（17）It
Between be additionally provided with the annular seal space being connected（15）, the valve rod（2）Away from look nut（3）One end on be provided with bonnet
（21）, the bonnet（21）With diameter greater than valve rod（2）Diameter and bonnet（21）Outer wall and annular seal space（15）Inwall it
Between leave gap, in bonnet（21）With annular seal space（15）Between be provided with the first O-ring（5）.
5. relief valve according to claim 1, it is characterised in that the valve body（1）Including embedded section（11）And with it is pre-
Bury section（11）The threaded connection section of integral type（12）, the embedded section（11）External diameter more than threaded connection section（12）Big footpath,
In embedded section（11）Be threadedly coupled section（12）Junction be provided with the second O-ring（6）.
6. relief valve according to claim 5, it is characterised in that the embedded section（11）Outer wall be light shaft type, it is described
Media outlet chamber（14）It is opened in embedded section（11）On, wherein media outlet chamber（14）Including the inner hexagonal hole positioned at opening
（141）.
7. relief valve according to claim 6, it is characterised in that the media outlet chamber（14）Also include away from opening one
The pressure regulation groove of side（142）, the regulating tank with diameter greater than inner hexagonal hole（141）Maximum gauge.
8. a kind of charging pile cooling water tank, it is characterised in that including casing（70）, the casing（70）On offer countersunk head screw thread
Hole（71）, the countersunk head screwed hole（71）It is upper to be threadedly coupled just like the relief valve described in any one of claim 1 ~ 7, when described
Relief valve is installed on casing（70）After upper, valve body（1）Upper surface（1a）With casing（70）Outer surface（70a）Flush.
9. the pressure detection method of a kind of relief valve as described in any one of claim 1 ~ 7, it is characterised in that including following step
Suddenly：
1）, pressure testing
Relief valve to be measured is attached on pressure testboard, and the liquid that leaks hunting is painted on relief valve, then carry out first time pressurization, the
Moulding pressure between 16.5 ~ 17.5psi, observing time be 5 ~ 7s between, during this period in if it find that a bubble
Emerge, confirm that the relief valve pressure is relatively low undesirable, this meets letting out for low voltage experiment if not finding a bubble to emerge
Pressure valve carries out second pressurization, second moulding pressure between 18 ~ 19psi, observing time be 5 ~ 7s between, during this period in
If it find that no bubble is emerged, confirm that the pressure of the relief valve is excessive undesirable, if a large amount of bubbles are emerged, confirm
The relief valve meets pressure requirements；
2）, for the first time detect
To be placed by 3.5 ~ 4.5 hours timeliness by the satisfactory relief valve of pressure testing, timeliness is attached to pressure test after placing
On platform and the liquid that leaks hunting is painted, then carry out first time pressurization, between 16 ~ 17psi, observing time is 30 to first time moulding pressure
Between ~ 32s, during this period in if it find that a bubble is emerged, confirm that the relief valve pressure is relatively low undesirable, if not
It was found that bubble is emerged, the relief valve for meeting low voltage experiment carries out second pressurization, and second moulding pressure is in 18 ~ 19psi
Between, observing time is between 28 ~ 30s, during this period in if it find that no bubble is emerged, confirm the pressure mistake of the relief valve
It is big undesirable, if a large amount of bubbles are emerged, confirm that the relief valve meets pressure requirements；
3）Detect for second
The relief valve met after first time is detected was placed by 7.5 ~ 8.5 hours timeliness, timeliness is attached to pressure after placing
On testboard and paint the liquid that leaks hunting, then carry out first time pressurization, first time moulding pressure between 16 ~ 17psi, observing time
For between 30 ~ 32s, during this period in if it find that a bubble is emerged, confirm that the relief valve pressure is relatively low undesirable, such as
Fruit does not find that the bubble relief valve for meeting low voltage experiment of emerging carries out second pressurization, second moulding pressure 18 ~
Between 19psi, observing time is between 28 ~ 30s, during this period in if it find that no bubble is emerged, confirm the relief valve
Pressure is excessive undesirable, if a large amount of bubbles are emerged, confirms that the relief valve meets pressure requirements；
4）Third time is detected
The relief valve met after being detected by second was placed by 23.5 ~ 24.5 hours timeliness, and timeliness is attached to pressure after placing
On power testboard and the liquid that leaks hunting is painted, then carry out first time pressurization, first time moulding pressure is seen between 15.5 ~ 16.5psi
The time is examined between 30 ~ 32s, during this period in if it find that a bubble is emerged, confirm this relief valve pressure be relatively low not meeting
It is required that, if not finding that the bubble relief valve for meeting low voltage experiment of emerging carries out second pressurization, second pressurization pressure
Between 18.5 ~ 19.5psi, observing time is between 28 ~ 30s power, during this period in if it find that no bubble is emerged, confirm
The pressure of the relief valve is excessive undesirable, if a large amount of bubbles are emerged, confirms that the relief valve meets pressure requirements；
5）, surface treatment；
6）, packaging and storage
Will be by rapid 1）~4）The satisfactory relief valve of pressure is collected and packaging and storage afterwards.
10. the pressure detection method of relief valve according to claim 9, it is characterised in that in step 4）Afterwards to conforming to
The relief valve asked carries out dispensing operation, and the junction of look nut and valve rod is carried out a little using adhesive dispensing device and using screw thread glue
Glue, half an hour is placed after dispensing is complete, and then the relief valve that dispensing is completed is checked, the not enough place of screw thread glue is mended
Glue.
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| CN201710125545.9A CN106763953A (en) | 2017-03-04 | 2017-03-04 | Relief valve, charging pile cooling water tank and pressure detection method |
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