CN106122525B - A kind of inflation valve seat can be used for online calibration - Google Patents
A kind of inflation valve seat can be used for online calibration Download PDFInfo
- Publication number
- CN106122525B CN106122525B CN201610488219.XA CN201610488219A CN106122525B CN 106122525 B CN106122525 B CN 106122525B CN 201610488219 A CN201610488219 A CN 201610488219A CN 106122525 B CN106122525 B CN 106122525B
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- China
- Prior art keywords
- wing passage
- channel
- mandril
- wall
- spool
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
Abstract
A kind of inflation valve seat can be used for online calibration, the main channel of connection is formed in valve body, upper channel and wing passage, main channel is in communication with the outside by wing passage and upper channel, there is a primary sealing area on the inner wall of main channel, main channel is separated into prepass and rear channel by primary sealing area, wing passage and upper channel are communicated with prepass, there is a secondary sealing area on wing passage inner wall, core assembly includes the first core assembly and the second core assembly, first core assembly includes the first spool and elastic component, first spool is mounted in rear channel by the elastic component along axis, first spool is tightly attached on primary sealing area under the action of the elastic component, second core assembly includes the second spool and elastic component, second spool is mounted in wing passage by the elastic component along axis, it is close that second spool is tightly attached to second under the action of the elastic component The mandril for controlling the first spool position is sealed and installed on cover, in prepass.It can online calibration using inflation valve seat of the invention.
Description
Technical field
The present invention relates to one kind can be used for SF6The online calibration of air insulation electric power apparatus inflates valve seat.
Background technique
Currently, SF is widely used in high-voltage power system6Gas circuit breaker (Gas Circuit Breaker abbreviation GCB)
Or SF6Gas-insulating and fully-enclosed combined electrical apparatus (Gas Insulated meta-enclosed Switchgear is abbreviated as GIS)
As the control and protection equipment of electric system, their expensive SF to have excellent performance6Gas is as insulation and arc-extinguishing medium.
GCB or GIS is usually by multiple pressure air chamber (pole-interpolar of GCB；Between electrical component-electrical component of GIS) it constitutes, monitor table
It is counted as the essential device of pressure system, it is necessary to remove carry out routine inspection and measurement every year, due to frequently dismantling, hold
Monitoring meter easy to damage, has been greatly reduced working efficiency.
Summary of the invention
The technical problems to be solved by the invention are just to provide a kind of valve seat that can be used for online calibration, use the present invention
Valve seat connect power equipment pressure air chamber and monitoring meter, it can be achieved that without dismantle monitoring meter in the case where, can be to prison
Control meter is checked and is measured, and the efficiency for improving calibration is conducive to, and also reduces the probability of damage monitoring meter.
The present invention solves its technical problem by following technical solution: a kind of inflation valve seat can be used for online calibration, packet
Valve body and core assembly are included, the valve body constitutes a threeway, and the core assembly is mounted in the valve body, passes through its position
Control the valve body it is each it is logical between connected relation；
It is characterized in that, running through the main channel of the valve body front and rear end in the valve body equipped with straight line, it is additionally provided with logical
Road and wing passage, the main channel are in communication with the outside by the wing passage and upper channel, surround it on the main channel inner wall
Central axes are formed with an annular primary sealing area, and the main channel is divided into forward and backward two sections by the primary sealing area, respectively
Referred to as prepass and rear channel, the wing passage and upper channel are communicated with the prepass, surround it on the wing passage inner wall
Central axes are formed with an annular secondary sealing area, and rear, the upper, wing passage constitutes the threeway of the valve body, the spool
Component includes the first core assembly and the second core assembly, and first core assembly is mounted in the rear channel, including the
One spool and elastic component, first spool are mounted in the rear channel by the elastic component along axis, first spool
It is tightly attached on the primary sealing area under the action of elastic component, is closed the channel, second core assembly is mounted on institute
It states in wing passage, including the second spool and elastic component, second spool is mounted on the side along axis by the elastic component and leads to
In road, second spool is tightly attached on the secondary sealing area under the action of elastic component, is closed the channel, logical before described
Mandril is sealed and installed in road, first spool, axis of the mandril in the main channel are stretched in the rear end of the mandril
It is upper that there is first position and the second position, when the mandril is moved by the first position backward along the axis of the main channel
When to the second position, the rear end of mandril heads on first spool far from the primary sealing area, open it is described after channel,
So that the rear channel can be connected to the upper channel and/or wing passage.
Power equipment pressure air chamber is set to be connected with the rear channel, monitoring meter is connected with the upper channel, and wing passage closes
Close, rear channel open when, monitoring meter work normally, need to monitoring meter checked, measured when, by tester with
Wing passage is connected, and controls wing passage unlatching, adjusts mandril, closes rear channel, can carry out online calibration to monitoring meter.
As the preferred embodiment of the present invention:
Channel internal diameter is greater than the prepass, transition of the primary sealing area between the forward and backward channel after described
Face, mandril rear portion outer diameter are less than its front, and mandril front outer diameter is adapted to the prepass, the rear portion of the mandril
The gap of annular is formed between the inner wall of the prepass, the upper, wing passage is directly communicated with the gap.The knot
Structure not only enables mandril move in the axial direction very well, and makes between the threeway of valve body, is connected to more unobstructed.
Same section of regional connectivity on the upper, wing passage and the prepass axis.
The mandril front is set with for cooperating the mandril sealing ring for realizing sealing, the top with the prepass inner wall
Bar front end is pierced by the valve body, is set with front end gland, and the front end gland is suitable by being threadably mounted at the front end of the valve body
The front end gland is rotated counterclockwise, and the mandril is driven to switch between the first position and the second position.
The mandril front end is equipped with first shaft shoulder, surrounds the main channel on the front end face of the valve body and is equipped with preceding sealing
Slot is equipped with preceding sealing ring in the preceding seal groove, and when the mandril is located at the second position, first shaft shoulder thereon is close
It is fitted on the preceding sealing ring, to realize better seal.
The front end gland is cylindrical in shape, and inside has a cylindrical cavity, and cavity wall is equipped with internal screw thread, the bottom of chamber middle part of front end
With aperture, form ring chamber bottom, the mandril front end be pierced by from the aperture in the middle part of the bottom of chamber it is exposed, the of the mandril
One shaft shoulder is buckled in the inside of the front end gland annular bottom of chamber.
Mandril front end outer wall is equipped with retaining ring around its central axes also detachable, and the retaining ring is located at the preceding side pressure
Lid front, outer diameter is greater than the internal diameter of aperture in the middle part of front end gland bottom of chamber, to limit to the front end gland, before making
Side pressure lid and mandril form an overall structure.
The elastic component of first core assembly is the first spring, and the first spool is ball valve, the rear end of first spring
Be supported on it is described after channel inner wall on, front end is connected with the ball valve, and first spring is in compressive state, described the
Under the action of one spring, the ball valve is closely affixed with the primary sealing area, is closed the rear channel.
The elastic component of second core assembly is second spring, and the second spool includes valve rod and seal washer, described close
Seal washer is sleeved on the valve rod, and the second spring is supported on the inner wall of the wing passage, outer end and the valve rod phase
Even, the second spring is in compressive state, and under the action of the second spring, the seal washer on the valve rod is tightly attached to
On the secondary sealing area, it is closed the wing passage.
For the valve rod in inner end closing, the tubulose of outer end opening, the valve rod inner end is equipped with second shaft shoulder, the gasket
It encloses and is affixed with the lateral surface of second shaft shoulder, the outer end of the second spring is connected with the medial surface of second shaft shoulder, packet
The end of valve rod described in network, so as to fixed axis, the wing passage is divided into two sections inside and outside, outer segment internal diameter by the secondary sealing area
Less than inner segment, the valve rod outer end is protruded into the outer segment of the wing passage, and the wing passage outer segment internal diameter is adapted to the valve rod,
The tube wall of the valve rod is equipped with gas port, and the gas port is located at the outside of the seal washer close to the seal washer,
When the wing passage is opened, the gas port enters the inner segment of the wing passage.The design of the structure also allows for the second valve
The unobstructed degree being connected between the stability of core movement and inside and outside section of wing passage.
The valve rod outer end is pierced by described wing passage a distance, when the valve rod returns in the wing passage, institute
State the inner segment that gas port enters the wing passage.
The wing passage is separated into the component of two detachable sealing docking, the second core assembly installation on axis
In the component for being located at outside.
The outer wall of the wing passage outer end is equipped with external screw thread.
It is equipped with side seal slot around the wing passage on the wing passage outer end face, is equipped with side seal in the side seal slot
Circle.
The inflation valve seat further includes protection cap, and the cavity of a package wing passage outer end is formed in the protection cap,
Be formed on the cavity inner wall with the internal screw thread that external screw thread is adapted on the wing passage outer wall, it is outer in the middle part of the protection hd top face
It is convex, so that deeper cavity is formed on the inside of protection cap, when the protection cap is mounted on the wing passage outer end, the protection cap
Top surface fitted closely with the side seal circle, the valve rod for stretching out the wing passage is contained in protection hd top face male part position
Inner cavity in.
The inflation valve seat further includes switching cylinder, the switching cylinder both ends open, is formed with and the side on the inner wall of one end
The internal screw thread that external screw thread is adapted on channel outer wall, be also formed with inside switching cylinder it is radially inwardly projecting, to narrow its barrel chamber
Annular surface, when the switching cylinder is mounted on the wing passage outer end, the annular surface is fitted closely with the side seal circle, and institute
The end for stating valve rod is against on the annular surface, and under the action of the annular surface, valve rod is retracted on the inside of the wing passage.
Compared with the existing technology, the invention has the following beneficial effects: set using inflation valve seat connection electric power of the invention
After standby pressure air chamber, monitoring meter and tester, it can be achieved that without dismantling monitoring meter, to monitoring meter into
Row On line inspection and measurement are conducive to the efficiency for improving calibration, also reduce the probability of damage monitoring meter；In addition, of the invention
Inflation valve seat also has sealed reliable, and no matter pressure air chamber is able to achieve the effect reliably sealed in inflated condition or vacuum state
Fruit；Moreover, the present invention also has structure simple, feature easy for installation, at low cost.
Detailed description of the invention
Fig. 1 is the schematic diagram of internal structure of the inflation valve seat of the specific embodiment of the invention；
Fig. 2 is the structural schematic diagram of the valve body of the specific embodiment of the invention；
Fig. 3 is the structural schematic diagram of the first core assembly of the specific embodiment of the invention；
Fig. 4 is the structural schematic diagram of the second core assembly of the specific embodiment of the invention；
Fig. 5 is the structural schematic diagram of the valve rod of the specific embodiment of the invention；
Fig. 6 is the structural schematic diagram of the push rod component of the specific embodiment of the invention；
Fig. 7 is the structural schematic diagram of the mandril of the specific embodiment of the invention；
Fig. 8 be inflate when valve seat loads onto protection cap structural schematic diagram (at this point, rear channel is in the open state, wing passage
It is in close state)；
Fig. 9 be inflate valve seat when loading onto switching cylinder structural schematic diagram (at this point, rear channel is in close state, wing passage
It is in the open state)；
Figure 10 be inflate when valve seat loads onto switching cylinder structural schematic diagram (at this point, rear channel is in the open state, wing passage
It is in the open state)；
In figure: 1- valve body, the first core assembly of 2-, the second core assembly of 3-, 4- push rod component, 8- switching cylinder, 10- master are logical
Road, 11- wing passage, 12- upper channel, 13- front end face, 14- rear end face, seal groove before 15-, seal groove after 16- seal before 17-
It encloses, sealing ring after 18-, 19- primary sealing area, 81- annular surface, 82- end cap, 101- prepass, channel after 102-, 103- first
Annular groove, the first retaining ring of 20-, the first spring of 21-, 22- ball valve, 31- side seal circle, the second retaining ring of 33-, the second bullet of 34-
Spring, 35- valve rod, 36- seal washer, 381- side seal slot, 303- secondary sealing area, 304- second annular groove, 351- second
The shaft shoulder, 352- boss, 353- gas port, 40- mandril, 41- mandril sealing ring, 42- drive end bearing bracket, 43- third retaining ring, 401- third
Annular groove, 402- fourth annular groove, first shaft shoulder of 403-.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
The inflation valve seat of the present embodiment, including valve body 1, the first core assembly 2, the second core assembly 3 and push rod component
4, as shown in Figure 1.
As shown in Fig. 2, be equipped with before the main channel 10 of 1 front and rear end 13,14 of valve body, valve body 1 along 1 axis of valve body,
Rear end face 13,14 is respectively equipped with forward and backward seal groove 15,16 around main channel 10, forward and backward sealing ring 17,18 be separately positioned on before,
Afterwards in seal groove 15,16.External screw thread is also designed on the outer wall of 101 end of prepass.
It is formed with an annular primary sealing area 19 around its central axes on 10 inner wall of main channel, main channel 10 is by first
Sealing surface 19 is divided into forward and backward two sections, is referred to as prepass 101 and rear channel 102.102 internal diameter of channel is greater than prepass afterwards
101, radial transition face of the primary sealing area 19 between forward and backward channel 101,102.10 inner wall of main channel is close to valve body 1
Rear end face 14 is circumferentially arranged with first annular groove 103.
It is additionally provided with upper channel 12 and wing passage 11 in valve body 1, the prepass 101 of main channel 10 passes through wing passage 11 and upper logical
Road 12 is in communication with the outside.Same section of regional connectivity on upper, wing passage 12,11 and 101 axis of prepass, and triple channel axis two
Two is vertical.It is formed with an annular secondary sealing area 303 around its central axes on 11 inner wall of wing passage, wing passage 11 is by second
Sealing surface 303 be divided into it is two sections inside and outside, outer segment internal diameter be less than inner segment.The second annular is additionally provided with around its axis on 11 inner wall of wing passage
Groove 304, second annular groove 304 are located at the inside of secondary sealing area 303.11 end face of wing passage is additionally provided with side around its axis
Seal groove 381, side seal slot 381 is interior to be equipped with side seal circle 31.External screw thread is additionally provided on the outer wall of 11 end of wing passage.
The threeway in channel 102, upper channel 12, the composition the present embodiment valve body 1 of wing passage 11 after above-mentioned.
For first core assembly 2 as shown in figure 3, being made of the first retaining ring 20, the first spring 21 and ball valve 22, they are coaxial
Setting, the both ends of the first spring 21 are connected with the first retaining ring 20 and ball valve 22 respectively.
For second core assembly 3 as shown in figure 4, being made of second spring 34, the second retaining ring 33 and the second spool, they are coaxial
Setting, the second spool are made of valve rod 35 and seal washer 36.Second spring 34 is connected between the second retaining ring 33 and valve rod 35, close
Seal washer 36 is sleeved on valve rod 35.
As shown in figure 5, valve rod 35 is in tubulose closed at one end, open at one end, the second axis is equipped with close to 35 closed end of valve rod
Shoulder 351, the end at the end form the boss 352 being located on second shaft shoulder 351, are additionally provided with gas port 353 on the tube wall of valve rod 35,
Gas port 353 and 352 quartile of boss are in the two sides of second shaft shoulder 351.Gas port 353 by two groups of lines it is vertical to perforation structure
At.
Seal washer 36 and gas port 353 are located at the same side of second shaft shoulder 351, seal washer 36 and second shaft shoulder 351
It is affixed setting, gas port 353 is close to seal washer 36.Second spring 34 is connected with second shaft shoulder 351 of valve rod 35, envelope valve rod
35 boss 352, so as to fixed axis.
As shown in Figure 6,7, push rod component 4 includes mandril 40, mandril sealing ring 41 and third retaining ring 43 and drive end bearing bracket 42.
Mandril 40 may be generally divided into two parts, front and rear, and 40 rear portion outer diameter of mandril is less than its front, and the front of mandril 40 is enclosed
It is equipped with fourth annular groove 402 around its axis, mandril sealing ring 41 is mounted in the groove, and the front of mandril 40 is closer to hold
Head position is equipped with first shaft shoulder 403, surrounds 40 axis of mandril in front of first shaft shoulder 403 and is equipped with third annular groove 401, third ring
Disassembly is equipped with third retaining ring 43 in connected in star 401.
Front end gland 42 is cylindrical in shape, and inside has a cylindrical cavity, and cavity wall is equipped with and external screw thread on 1 front end outer wall of valve body
The internal screw thread of adaptation, bottom of chamber middle part have aperture, form ring chamber bottom.
40 front end of mandril is pierced by exposed, the aperture internal diameter and 40 front end of mandril from the aperture in the middle part of preceding 42 bottom of chamber of side pressure lid
Outer diameter adaptation, first shaft shoulder 403 of mandril 40 are buckled in the inside at 42 annular chamber bottom of front end gland, and third retaining ring 43 is located at preceding side pressure
42 front of lid, the internal diameter that outer diameter is greater than aperture in the middle part of 42 bottom of chamber of front end gland make front end to limit to front end gland 42
Gland 42 and mandril 40 form an overall structure.
As shown in Figure 1, the assembly relation of each component is as follows in the present embodiment:
First core assembly 2 is mounted in rear channel 102 along axis, and the first retaining ring 20 of the first core assembly 2 is mounted on
The rear end of first annular groove 103 on 102 inner wall of channel afterwards, the first spring 21 is supported on rear channel by the first retaining ring 20
On 102 inner wall, the first spring 21 is in compressive state, under the action of the first spring 21, ball valve 22 and primary sealing area 19
It is closely affixed, channel 102 after closure.
Push rod component 4 is mounted in prepass 101 along axis, and ball valve 22 is stretched in rear end, and front end exposes to prepass 101,
Its front end gland 42 by being threadably mounted at the front end of valve body 1, mandril 40 have on the axis of main channel 10 first position and
The second position, clockwise and anticlockwise rotation front end gland 42 will drive mandril 40 to switch between the first position and the second position, when
When mandril 40 is moved to the second position by first position backward along the axis of main channel 10, the rear end of mandril 40 heads on ball valve 22
Far from primary sealing area 19, channel 102 after unlatching can be connected to channel 102 after an action of the bowels with upper channel 12 and/or wing passage 11.
The front outer diameter of mandril 40 is adapted to prepass 101, is formed between the rear portion of mandril 40 and the inner wall of prepass 101
The gap of annular, upper, wing passage 12,11 are directly communicated with the gap.The mandril sealing ring 41 being set on mandril 40 seals
Gap between 101 inner wall of mandril 40 and prepass, first shaft shoulder 403 when mandril 40 is located at the second position, on mandril 40
It is fitted tightly on the preceding sealing ring 17 on 1 front end face of valve body, to realize the second layer sealing in addition to mandril sealing ring 41.
Second core assembly 3 is mounted in wing passage 11 along axis, and the second retaining ring 33 of the second core assembly 3 is mounted on side
In second annular groove 304 on 11 inner wall of channel, 34 inner end of second spring is supported on wing passage 11 by the second retaining ring 33
On inner wall, second spring 34 is in compressive state, and under the action of the second spring 34, the seal washer 36 on valve rod 35 is tightly attached to
On secondary sealing area 303, it is closed wing passage 11.11 outer segment internal diameter of wing passage is adapted to valve rod 35, and it is logical that side is protruded into 35 outer end of valve rod
It in the outer segment in road 11, and is pierced by a distance, is returned in wing passage 11 in valve rod 35, i.e., when wing passage 11 is opened, valve rod 35
Upper gas port 353 enters the inner segment of wing passage 11, makes inside and outside section of wing passage 11 gas port 353 and inner cavity by valve rod 35
Preferably connection.
As shown in figure 8, inflation valve seat further includes protection cap 7, the chamber of package 11 outer end of wing passage is formed in protection cap 7
Body is formed on the cavity inner wall with the internal screw thread that external screw thread is adapted on 11 outer wall of wing passage, evagination in the middle part of 7 top surface of protection cap,
To form deeper cavity on the inside of protection cap, when protection cap 7 is mounted on 11 outer end of wing passage, the top surface and side of protection cap 7
Sealing ring 31 fits closely, and the valve rod 40 for stretching out wing passage 11 is contained in the inner cavity at 7 top surface evagination position of protection cap.Protection cap
7 design, avoidable wing passage 11, which is opened by mistake, to be opened.
As shown in Figures 9 and 10, inflation valve seat further includes switching cylinder 8,8 both ends open of switching cylinder, be formed on the inner wall of one end with
The internal screw thread that external screw thread is adapted on 11 outer wall of wing passage, be also formed with inside switching cylinder 8 it is radially inwardly projecting, to narrow its cylinder
The annular surface 81 of chamber, when switching cylinder 8 is mounted on 11 outer end of wing passage, annular surface 81 is fitted closely with side seal circle 31, and valve rod
40 end is against on annular surface 81, and under the action of annular surface 81, valve rod 40 retracts 11 inside of wing passage.The present embodiment transfer
Connect cylinder 8 is made of two components, including one with 42 structure of drive end bearing bracket identical end cap 82, further include one and open at one end be equipped with
Flanging structure divides cylinder, this point of cylinder is buckled in the inside of end cap by the end face of its flanging structure, and the annular surface 81 is institute
State the end face that point cylinder has flanging structure.
Power equipment pressure air chamber is set to be connected with the rear channel, monitoring meter is connected with the upper channel, and wing passage closes
It closes, when rear channel is opened, monitoring meter is worked normally.
When needing that monitoring meter is checked, measured, tester is led to by switching cylinder in Fig. 9,10 and side
Road connection, the at this time effect due to switching cylinder to valve rod, wing passage are opened, and mandril is adjusted, and close rear channel, can be to monitoring
Meter carries out online calibration, as shown in Figure 9.
If you need to use inflation and gas recycling function, air charging system or gas concentration unit are passed through into the switching in Fig. 9,10
Cylinder is connected to wing passage, at this point, wing passage is to open, is adjusted mandril, is opened rear channel, as shown in Figure 10, can be realized
Inflation or gas recycle function.
Claims (10)
1. a kind of inflation valve seat that can be used for online calibration, including valve body and core assembly, the valve body constitutes a threeway, institute
Core assembly is stated to be mounted in the valve body, by valve body described in its position control it is each it is logical between connected relation；
It is characterized in that, the valve body in equipped with straight line run through the valve body front and rear end main channel, be additionally provided with upper channel and
Wing passage, the main channel are in communication with the outside by the wing passage and upper channel, its axis is surrounded on the main channel inner wall
Line is formed with an annular primary sealing area, and the main channel is divided into forward and backward two sections by the primary sealing area, is referred to as
Prepass and rear channel, the wing passage and upper channel are communicated with the prepass, its axis is surrounded on the wing passage inner wall
Line is formed with an annular secondary sealing area, and rear, the upper, wing passage constitutes the threeway of the valve body, the core assembly
Including the first core assembly and the second core assembly, first core assembly is mounted in the rear channel, including the first valve
Core and elastic component, first spool are mounted in the rear channel by the elastic component along axis, and first spool is at this
It is tightly attached under the action of elastic component on the primary sealing area, is closed the channel, second core assembly is mounted on the side
In channel, including the second spool and elastic component, second spool are mounted in the wing passage by the elastic component along axis,
Second spool is tightly attached on the secondary sealing area under the action of elastic component, is closed the channel, in the prepass
It is sealed and installed with mandril, first spool is stretched in the rear end of the mandril, and the mandril has on the axis of the main channel
There are first position and the second position, when the mandril is moved to institute by the first position backward along the axis of the main channel
When stating the second position, the rear end of mandril heads on first spool far from the primary sealing area, opens the rear channel, so as to
Channel can be connected to the upper channel and/or wing passage after described.
2. inflation valve seat according to claim 1, which is characterized in that channel internal diameter is greater than the prepass, institute after described
State transition face of the primary sealing area between the forward and backward channel, mandril rear portion outer diameter is less than its front, before the mandril
Portion's outer diameter is adapted to the prepass, and the gap of annular, institute are formed between the rear portion of the mandril and the inner wall of the prepass
It states, wing passage is directly communicated with the gap；
Same section of regional connectivity on the upper, wing passage and the prepass axis.
3. inflation valve seat according to claim 2, which is characterized in that the mandril front be set with for it is described preceding logical
The mandril sealing ring of sealing is realized in inner wall cooperation in road, and the mandril front end is pierced by the valve body, front end gland is set with, before described
Side pressure lid drives the mandril in institute by being threadably mounted at the front end of the valve body, front end gland described in clockwise and anticlockwise rotation
It states and switches between first position and the second position.
4. inflation valve seat according to claim 3, which is characterized in that the elastic component of first core assembly is the first bullet
Spring, the first spool are ball valve, and the rear end of first spring is supported on the inner wall in the rear channel, front end and the ball valve phase
Even, first spring is in compressive state, and under the action of first spring, the ball valve and the primary sealing area are tight
It is close to be affixed, it is closed the rear channel.
5. inflation valve seat according to claim 4, which is characterized in that the elastic component of second core assembly is the second bullet
Spring, the second spool include valve rod and seal washer, and the seal washer is sleeved on the valve rod, and the second spring is supported on
On the inner wall of the wing passage, outer end is connected with the valve rod, and the second spring is in compressive state, in the second spring
Under the action of, the seal washer on the valve rod is tightly attached on the secondary sealing area, is closed the wing passage.
6. inflation valve seat according to claim 5, which is characterized in that the valve rod is in inner end closing, the pipe of outer end opening
Shape, the valve rod inner end are equipped with second shaft shoulder, and the lateral surface of the seal washer and second shaft shoulder is affixed, second bullet
The outer end of spring is connected with the medial surface of second shaft shoulder, the end of valve rod described in envelope, so as to fixed axis, the wing passage
It is divided into inside and outside two sections by the secondary sealing area, outer segment internal diameter is less than inner segment, and the outer of the wing passage is protruded into the valve rod outer end
In section, the wing passage outer segment internal diameter is adapted to the valve rod, and the tube wall of the valve rod is equipped with gas port, the air guide hole location
In the outside of the seal washer close to the seal washer, when the wing passage is opened, the gas port is logical into the side
The inner segment in road.
7. inflation valve seat according to claim 6, which is characterized in that the valve rod outer end be pierced by one section of the wing passage away from
From when the valve rod returns in the wing passage, the gas port enters the inner segment of the wing passage.
8. inflation valve seat according to claim 7, which is characterized in that the wing passage is separated into two disassemblies on axis
The component of formula sealing docking, second core assembly are mounted in the component in outside.
9. inflation valve seat according to claim 8, which is characterized in that the outer wall of the wing passage outer end is equipped with outer spiral shell
Line；
It is equipped with side seal slot around the wing passage on the wing passage outer end face, is equipped with side seal circle in the side seal slot；
The inflation valve seat further includes protection cap, and the cavity of a package wing passage outer end, the chamber are formed in the protection cap
Be formed on internal wall with the internal screw thread that external screw thread be adapted on the wing passage outer wall, protection hd top face middle part evagination, from
And deeper cavity is formed on the inside of protection cap, and when the protection cap is mounted on the wing passage outer end, the top of the protection cap
Face is fitted closely with the side seal circle, and the valve rod for stretching out the wing passage is contained in the interior of the protection hd top face male part position
In chamber.
10. inflation valve seat according to claim 8, which is characterized in that the outer wall of the wing passage outer end is equipped with outer spiral shell
Line；
It is equipped with side seal slot around the wing passage on the wing passage outer end face, is equipped with side seal circle in the side seal slot；
The inflation valve seat further includes switching cylinder, the switching cylinder both ends open, is formed with and the wing passage on the inner wall of one end
The internal screw thread that external screw thread is adapted on outer wall, be also formed with inside switching cylinder it is radially inwardly projecting, to narrow the annular of its barrel chamber
Face, when the switching cylinder is mounted on the wing passage outer end, the annular surface is fitted closely with the side seal circle, and the valve
The end of bar is against on the annular surface, and under the action of the annular surface, valve rod is retracted on the inside of the wing passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610488219.XA CN106122525B (en) | 2016-06-24 | 2016-06-24 | A kind of inflation valve seat can be used for online calibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610488219.XA CN106122525B (en) | 2016-06-24 | 2016-06-24 | A kind of inflation valve seat can be used for online calibration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
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| CN106122525B true CN106122525B (en) | 2019-02-01 |
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| WO2021208684A1 (en) * | 2020-04-13 | 2021-10-21 | 浙江晟祺实业有限公司 | Improved spray head structure |
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| US7237760B1 (en) * | 2006-01-28 | 2007-07-03 | Ching-Su Chiu | Check valve actuator |
| CN201327795Y (en) * | 2008-11-06 | 2009-10-14 | 上海卓电电气有限公司 | Assembly joint for checking SF* gas density controller in SF* electric switch |
| CN204328136U (en) * | 2014-12-19 | 2015-05-13 | 平顶山市天勤仪表有限责任公司 | A kind of SF 6gas valve device |
| CN205745446U (en) * | 2016-06-24 | 2016-11-30 | 广州白云电器设备股份有限公司 | A kind of inflation valve seat that can be used for online calibration |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201236971Y (en) * | 2008-06-27 | 2009-05-13 | 宁波中迪机械有限公司 | Meter-correction combined valve |
| CN103367030B (en) * | 2013-08-02 | 2016-08-10 | 上海乐研电气科技有限公司 | The fitting joint of the sulfur hexafluoride gas density relay of maloperation can be prevented |
| CN204176030U (en) * | 2014-09-26 | 2015-02-25 | 平顶山市天勤仪表有限责任公司 | For the calibration valve of SF6 gas assembly apparatus |
| CN204729670U (en) * | 2015-05-14 | 2015-10-28 | 山东泰开电器机构有限公司 | A kind of novel inflation/deflation calibration valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7237760B1 (en) * | 2006-01-28 | 2007-07-03 | Ching-Su Chiu | Check valve actuator |
| CN201327795Y (en) * | 2008-11-06 | 2009-10-14 | 上海卓电电气有限公司 | Assembly joint for checking SF* gas density controller in SF* electric switch |
| CN204328136U (en) * | 2014-12-19 | 2015-05-13 | 平顶山市天勤仪表有限责任公司 | A kind of SF 6gas valve device |
| CN205745446U (en) * | 2016-06-24 | 2016-11-30 | 广州白云电器设备股份有限公司 | A kind of inflation valve seat that can be used for online calibration |
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