CN209587280U - The sealing structure of gas combustion meter pipe opening/shutting controller - Google Patents
The sealing structure of gas combustion meter pipe opening/shutting controller Download PDFInfo
- Publication number
- CN209587280U CN209587280U CN201920118930.5U CN201920118930U CN209587280U CN 209587280 U CN209587280 U CN 209587280U CN 201920118930 U CN201920118930 U CN 201920118930U CN 209587280 U CN209587280 U CN 209587280U
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- Prior art keywords
- sealing
- area side
- axle sleeve
- valve rod
- gas combustion
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- 238000007789 sealing Methods 0.000 title claims abstract description 100
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 24
- 230000002093 peripheral effect Effects 0.000 claims abstract description 18
- 210000004907 gland Anatomy 0.000 claims description 20
- 230000008602 contraction Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 31
- 238000010276 construction Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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Abstract
The utility model relates to gas meter, flow meter technical fields, provide a kind of sealing structure of gas combustion meter pipe opening/shutting controller, including casing and valve rod；It further include the axle sleeve being arranged on casing；Valve rod is arranged in the inner hole of axle sleeve；Sealing ring is additionally provided between the inner peripheral surface of axle sleeve and the outer peripheral surface of valve rod；The locating part that axial limiting is carried out to sealing ring is additionally provided on axle sleeve；It is additionally provided on sealing ring from motor area side to the first pressure relief of valve port seat area side pressure release and from the second pressure relief of valve port seat field side motor area side pressure release.The sealing structure of the gas combustion meter pipe opening/shutting controller of the utility model, by the way that pressure relief is arranged, it ensure that the pressure difference of sealing ring two sides is no more than safety value, it solves the problems, such as the unlatching that sealing shroud in the prior art is easy to appear bulging or contraction and influences device, closing performance, improves the reliability of whole device.
Description
Technical field
The utility model relates to gas meter, flow meter technical field, in particular to a kind of sealing of gas combustion meter pipe opening/shutting controller
Structure.
Background technique
It in the prior art, is to pass through to the metering of the combustion gas of urban and rural residents and small gas facility and security monitoring management
The intelligent gas meter installed on gas pipeline is come what is carried out, these intelligent gas meters are according to the needs of remote auto management at it
Inside is mounted with gas combustion meter pipe headstock gear.Application publication number is CN103398209A, and a kind of entitled gas meter motor is opened
The patent for closing valve, discloses a kind of gas pipeline headstock gear, the reduction gearing including the connection of valve body motor drive；In valve body
Ratchet circle gear is rotatably connected on the sleeve outer circle of chamber locating support；The ratchet circle gear and elasticity are connected on locating support
The rack gear of control-rod engages；It is built-in with ratchet bracket in the deep hole of the ratchet circle gear, the ratchet bracket passes through its lower end
Shaft and the axle sleeve hole of the locating support be rotatedly connected, the guide groove sliding of ratchet is connected on the locating shaft of ratchet bracket；
The positioning tooth up and down of the ratchet is corresponding with the interior tooth engagement of the ratchet circle gear or to be separated；The ratchet is nibbled with ratchet gear
It closes.Although the gas pipeline headstock gear of this structure has the function of that spring is quickly closing assisted, it is small to close power consumption；But
Since gas combustion meter pipe opening/shutting controller is made of motor, deceleration mechanism, opening and closing executing agency and valve port runner interface, electricity
Machine, deceleration mechanism and executing agency are mounted in a chamber and seal, and the gaseous impurity in valve port runner is avoided to enter sealing
Chamber adverse effect is caused to the moving component in motor, deceleration mechanism and executing agency.Current technology, which generallys use, stretches
The hermetically sealed isolation of contracting rubber sleeve, such gas combustion meter pipe opening/shutting controller is poor to the adaptability of various pressure environments, dress
It sets and is examining in actual use, sealing shroud can undergo positive pressure or subnormal ambient, be easy to appear sealing shroud bulging or contraction
The case where and influence device unlatching, close performance the problem of, will cause device when serious and fail to open or close.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of gas combustion meter pipes of high reliablity to open and close control dress
The sealing structure set.
The technical scheme adopted by the utility model to solve the technical problem is as follows: gas combustion meter pipe opening/shutting controller is close
Seal structure, including casing and valve rod；It further include the axle sleeve being arranged on casing；The valve rod is arranged in the inner hole of axle sleeve；Institute
It states and is additionally provided with sealing ring between the inner peripheral surface of axle sleeve and the outer peripheral surface of valve rod；It is additionally provided on the axle sleeve and sealing ring is carried out
The locating part of axial limiting；The first pressure release from motor area side to valve port seat area side pressure release is additionally provided on the sealing ring
Structure and the second pressure relief from valve port seat field side motor area side pressure release.
Further, first pressure relief includes the first relief hole formed by ring inner hole；Described second lets out
Laminated structure includes at least one second relief hole being arranged on sealing ring.
Further, first relief hole is on from valve port seat area side to the direction of motor area side, including first
Sealing lip section and the first open segment；When the first pressure relief is in sealing state, the first sealing lip section and stem outer circumference face are close
Envelope cooperation, has gap between the first open segment and valve rod；When the first pressure relief is in pressure release state, the first sealing lip section
The first pressure release passage is formed between valve rod.
Further, second relief hole is on from motor area side to the direction of valve port seat area side, including second
Sealing lip section and the second open segment；When the second pressure relief is in sealing state, the second sealing lip of second relief hole
Section is in seal closure state, and the second open segment is in opened condition；When the second pressure relief is in pressure release state, described second is let out
The second sealing lip section in pressure hole is opened and forms the second pressure release passage.
Further, the sealing ring is rubber seal.
Further, the locating part includes being located at motor area side and one end phase with axle sleeve close to motor area side
Connection the first gland, positioned at valve port seat area side and with axle sleeve close to one end of valve port seat area side be connected second pressure
Lid.
Further, first gland and axle sleeve are integrally formed part.
Further, second gland includes the collar flange being sleeved on valve rod, has direction on the collar flange
Spatially extended axial projection between axle sleeve and valve rod.
The beneficial effects of the utility model are: the sealing structure of the gas combustion meter pipe opening/shutting controller of the utility model,
By the way that pressure relief is arranged, it ensure that the pressure difference of sealing ring two sides is no more than safety value, solve sealing in the prior art
Set is easy to appear bulging or contraction and influences the unlatching of device, closes the problem of performance, improves the reliability of whole device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of gas combustion meter pipe opening/shutting controller；
Fig. 2 is enlarged drawing at A in Fig. 1；
Fig. 3 is the structural representation of sealing ring in the sealing structure of the gas combustion meter pipe opening/shutting controller of the utility model
Figure.
Appended drawing reference in figure are as follows: 1- casing, 2- valve rod, 3- axle sleeve, 4- sealing ring, the first relief hole of 5-, the second pressure release of 6-
Hole, the first gland of 7-, the second gland of 8-, 9- valve port seat, 11- motor, 12- gear reduction, 13- cam mechanism, 14- reset
Elastic component, 51- the first sealing lip section, the first open segment of 52-, 61- the second sealing lip section, the second open segment of 62-, 81- ring-type are convex
Edge, 82- axial projection, 91- air inlet, the gas outlet 92-.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples:
The sealing structure of gas combustion meter pipe opening/shutting controller described in the utility model, including casing 1 and valve rod 2；Also
Including the axle sleeve 3 being arranged on casing 1；The valve rod 2 is arranged in the inner hole of axle sleeve 3；The inner peripheral surface and valve rod of the axle sleeve 3
Sealing ring 4 is additionally provided between 2 outer peripheral surface；The limit that axial limiting is carried out to sealing ring 4 is additionally provided on the axle sleeve 3
Part；It is additionally provided on the sealing ring 4 from motor area side to the first pressure relief of valve port seat area side pressure release and from valve
Second pressure relief of mouth seat field side motor area side pressure release.
As shown in Figure 1, gas combustion meter pipe opening/shutting controller includes casing 1, it is slideably equipped with valve rod 2 on casing 1,
Valve rod 2 can move along its axis, and the power mechanism that driving stem 2 moves along its axis is additionally provided in casing 1；The power mechanism
Including motor 11, gear reduction 12, cam mechanism 13 and return springs 14, the motor 11 passes through gear reduction
12 are sequentially connected with cam mechanism 13, carry out switching motion by 13 driving stem 2 of cam mechanism, the return springs 14 are
The reset of valve rod 2 provides reseting elasticity.The outside of casing 1 is also detachably connected with valve port seat 9, has on valve port seat 9 mutual
The air inlet 91 of connection, gas outlet 92.One end of the valve rod 2 extends at the gas outlet 92 of valve port seat 9, and by being mounted on
Jam pot cover on valve rod 2 pads 21 pairs of gas outlets 92 and is sealed.Sealing structure, such as Fig. 2 are provided between the valve rod 2 and casing 1
Shown, the axle sleeve 3 is cylindrical shape, is sleeved on valve rod 2 and is arranged on casing 1.In order in the inner peripheral surface and valve of axle sleeve 3
Necessary and sufficient space is formed between the outer peripheral surface of bar 2, it, should be according to the outer diameter of valve rod 2 suitably to install sealing ring 4
Set the internal diameter of axle sleeve 3.The sealing ring 4 is arranged between the inner peripheral surface of axle sleeve 3 and the outer peripheral surface of valve rod 2 and close with them
Envelope cooperation.The upper and lower ends of sealing ring 4 are limited by locating part, the axial direction for avoiding sealing ring 4 from following valve rod 2 along valve rod 2
It is mobile.The sealing ring 4 answers high resilience, resilience, has tensile strength appropriate, elongation and tearing toughness etc. excellent
Point, can be rubber seal, can also be formed using processing and fabricatings such as high molecular material or composite materials.
As shown in Figure 1, that side equipped with motor 11 is motor area side in 2 axially direction of valve rod, it is equipped with valve
That side of mouth seat 9 is valve port seat area side.The pressure of motor area side is set as P1, the pressure of valve port seat area side is P2,
The safety value of the pressure difference of motor area side and valve port seat area side is P3.As P1-P2 > P3, show the pressure of motor area side
It is more than safety value that power, which is greater than the pressure of valve port seat area side and the pressure difference between them, at this point, motor area side passes through first
Pressure relief carries out pressure release to valve port seat area side, to balance the pressure difference between them, and then makes P1-P2 < P3.Work as P2-P1
When > P3, showing that the pressure of valve port seat area side is greater than the pressure of motor area side and the pressure difference between them is more than safety
Value, at this point, valve port seat area side carries out pressure release to motor area side by the second pressure relief, to balance the pressure between them
Difference, and then make P2-P1 < P3.
The sealing structure of the gas combustion meter pipe opening/shutting controller of the utility model, solves sealing shroud in the prior art
It is easy to appear bulging or contraction and influences the unlatching of device, closes the problem of performance, improve the reliability of whole device；Pass through
First pressure relief and the second pressure relief are set, when the gas pressure in casing 1 and the gas pressure in valve port seat 9 are different
It causes and the pressure difference between them can be with releasing pressure automatically more than after safety value, and then balance the pressure in casing 1 and valve port seat 9,
Improve the stability and reliability of whole device.
As shown in Figure 2 and Figure 3, first pressure relief includes the first relief hole 5 formed by 4 inner hole of sealing ring；It is described
Second pressure relief includes at least one second relief hole 6 being arranged on sealing ring 4.First relief hole 5 is along from valve port
In seat area side to the direction of motor area side, including the first sealing lip section 51 and the first open segment 52；When the first pressure relief
When in sealing state, the first sealing lip section 51 cooperates with the sealing of 2 outer peripheral surface of valve rod, has between the first open segment 52 and valve rod 2
There is gap；When the first pressure relief is in pressure release state, it is logical that the first pressure release is formed between the first sealing lip section 51 and valve rod 2
Road.Second relief hole 6 is on from motor area side to the direction of valve port seat area side, including the second sealing lip section 61 and
Two open segments 62；When the second pressure relief is in sealing state, the second sealing lip section 61 of second relief hole 6 is in sealing
Closed state, the second open segment 62 is in opened condition；When the second pressure relief is in pressure release state, second relief hole 6
The second sealing lip section 61 open and form the second pressure release passage.
In use, first pressure relief and the second pressure relief include two working conditions, are respectively
Sealing state and pressure release state.As P1-P2 < P3, show that the pressure difference between motor area side and valve port seat area side is less than
Safety value, the first pressure relief is in sealing state at this time, specifically, the first sealing lip section 51 and valve rod 2 of the first relief hole 5
Outer peripheral surface seal cooperation, and between the first open segment of the first relief hole 5 and the outer peripheral surface of valve rod 2 have gap.Work as P1-P2
When > P3, show that the pressure difference of motor area side and valve port seat area side is greater than safety value, the first pressure relief is in and lets out at this time
Pressure condition, specifically, forming between the first sealing lip section 51 and valve rod 2 of the first relief hole 5 under the action of gas pressure
One pressure release passage is connected to motor area side and valve port seat area side, then the lateral valve port seat area side of motor area carries out pressure release, with
The pressure difference between them is balanced, after P1-P2 < P3, the first pressure release passage is automatically closed, the first sealing of the first relief hole 5
The outer peripheral surface of lip section 51 and valve rod 2, which seals, to be cooperated.Further, first relief hole 5 is that valve port seat area side is small, motor area
The big bellmouth in side.As P2-P1 < P3, show that the pressure difference between valve port seat area side and motor area side is less than safety
Value, the second pressure relief is in sealing state at this time, specifically, such as second relief hole 6 in left side in Fig. 3, the second relief hole 6
Second sealing lip section 61 is in seal closure state under the action of 4 own resilient of sealing ring, and the second open segment 62 is in opened condition.
As P2-P1 > P3, show that the pressure difference between valve port seat area side and motor area side is greater than safety value, at this time the second pressure release
Structure is in pressure release state, specifically, such as second relief hole 6 on right side in Fig. 3, under the action of gas pressure, the second pressure release
The second sealing lip section 61 in hole 6 is unfolded into the second pressure release passage, is connected to valve port seat area side and motor area side, then valve port seat
Field side motor area side carries out pressure release, to balance the pressure difference between them, after P2-P1 < P3, and the second pressure release passage
It is automatically closed, 61 seal closure of the second sealing lip section of the second relief hole 6.Further, circumference uniform distribution is arranged on the sealing ring 4
There are multiple second relief holes 6, when the second relief hole 6 is in pressure release state, as shown in second relief hole 6 on right side in Fig. 3,
Shape is substantially tapered.
First pressure relief, which can also be, to be arranged on axle sleeve 3 and is connected to motor area side and valve port seat area side
First passage, the opening that first passage is located at valve port seat area side is provided with the first gasket, and the first gasket passes through bullet
Property sealing structure lid close first passage opening, as P1-P2 > P3, under the action of gas pressure, the first gasket
The opening of first passage is opened, and then the lateral valve port seat area side of motor area is made to carry out pressure release.After P1-P2 < P3, first
Gasket is covered in the opening of first passage by elastic construction.Second pressure relief, which can also be, to be arranged in axis
On set 3 and the second channel of connection motor area side and valve port seat area side, second channel are located at the opening of motor area side
It is provided with the second gasket, the second gasket is covered in the opening of second channel by elastic construction, as P2-P1 > P3
When, under the action of gas pressure, the second gasket opens the opening of second channel, and then makes valve port seat field side motor area
Domain side carries out pressure release.After P2-P1 < P3, the second gasket is covered in the opening of second channel by elastic construction.
The locating part can be the annular spacing groove being arranged on 3 inner peripheral surface of axle sleeve, and the sealing ring 4 is arranged in the ring
In shape limiting slot, but this structure processing trouble, and be not easy to replace sealing ring 4.One kind that Fig. 2 show locating part is excellent
Select embodiment, the locating part include positioned at motor area side and be connected with axle sleeve 3 close to one end of motor area side the
One gland 7, positioned at valve port seat area side and the second gland 8 for being connected with axle sleeve 3 close to one end of valve port seat area side.Institute
It states the first gland 7 and sealing ring 4 is limited close to the end of motor area side, second gland 8 is to sealing ring 4 close to valve
The end of mouth seat area side is limited.
As shown in Fig. 2, first gland 7 is the annular element being sleeved on valve rod 2, first gland 7 can pass through
Bolt arrangement is connected on axle sleeve 3, and the part preferably, first gland 7 and axle sleeve 3 are integrally formed, the first gland 7 is to close
The lower end of seal 4 is limited.Second gland 8 includes the collar flange 81 that is sleeved on valve rod 2, on the collar flange 81
With towards axial projection 82 spatially extended between axle sleeve 3 and valve rod 2.Upper end of the axial projection 82 to sealing ring 4
It is limited.Second gland 8 can be detachably connected by bolt arrangement and axle sleeve 3, preferably, described
The axial projection 82 of two glands 8 is connect with 3 inner hole of axle sleeve by interference fit or by annular recess male cooperation.
Claims (8)
1. the sealing structure of gas combustion meter pipe opening/shutting controller, including casing (1) and valve rod (2)；It is characterized in that, further including
The axle sleeve (3) being arranged on casing (1)；The valve rod (2) is arranged in the inner hole of axle sleeve (3)；The inner peripheral surface of the axle sleeve (3)
Sealing ring (4) are additionally provided between the outer peripheral surface of valve rod (2)；It is additionally provided on the axle sleeve (3) and axis is carried out to sealing ring (4)
To the locating part of limit；It is additionally provided on the sealing ring (4) from motor area side to the first of valve port seat area side pressure release and is let out
Laminated structure and the second pressure relief from valve port seat field side motor area side pressure release.
2. the sealing structure of gas combustion meter pipe opening/shutting controller according to claim 1, which is characterized in that described first
Pressure relief includes the first relief hole (5) formed by sealing ring (4) inner hole；Second pressure relief includes that setting is sealing
Enclose at least one second relief hole (6) on (4).
3. the sealing structure of gas combustion meter pipe opening/shutting controller according to claim 2, which is characterized in that described first
Relief hole (5) is on from valve port seat area side to the direction of motor area side, including the first sealing lip section (51) and first opens
Section (52)；When the first pressure relief is in sealing state, the first sealing lip section (51) and the sealing of valve rod (2) outer peripheral surface cooperate,
There is gap between first open segment (52) and valve rod (2)；When the first pressure relief is in pressure release state, the first sealing lip section
(51) the first pressure release passage is formed between valve rod (2).
4. the sealing structure of gas combustion meter pipe opening/shutting controller according to claim 2, which is characterized in that described second
Relief hole (6) is on from motor area side to the direction of valve port seat area side, including the second sealing lip section (61) and second opens
Section (62)；When the second pressure relief is in sealing state, the second sealing lip section (61) of second relief hole (6) is in sealing
Closed state, the second open segment (62) is in opened condition；When the second pressure relief is in pressure release state, second relief hole
(6) the second sealing lip section (61) is opened and forms the second pressure release passage.
5. the sealing structure of gas combustion meter pipe opening/shutting controller according to claim 1, which is characterized in that the sealing
Enclosing (4) is rubber seal.
6. the sealing structure of gas combustion meter pipe opening/shutting controller according to claim 1, which is characterized in that the limit
Part includes the first gland (7) for being located at motor area side and being connected with axle sleeve (3) close to one end of motor area side, is located at
Valve port seat area side and the second gland (8) being connected with axle sleeve (3) close to one end of valve port seat area side.
7. the sealing structure of gas combustion meter pipe opening/shutting controller according to claim 6, which is characterized in that described first
Gland (7) and axle sleeve (3) are integrally formed part.
8. the sealing structure of gas combustion meter pipe opening/shutting controller according to claim 6, which is characterized in that described second
Gland (8) includes the collar flange (81) being sleeved on valve rod (2), is had on the collar flange (81) towards axle sleeve (3) and valve
Spatially extended axial projection (82) between bar (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920118930.5U CN209587280U (en) | 2019-01-24 | 2019-01-24 | The sealing structure of gas combustion meter pipe opening/shutting controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920118930.5U CN209587280U (en) | 2019-01-24 | 2019-01-24 | The sealing structure of gas combustion meter pipe opening/shutting controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209587280U true CN209587280U (en) | 2019-11-05 |
Family
ID=68380194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920118930.5U Expired - Fee Related CN209587280U (en) | 2019-01-24 | 2019-01-24 | The sealing structure of gas combustion meter pipe opening/shutting controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209587280U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183526A (en) * | 2020-09-15 | 2022-03-15 | 成都秦川物联网科技股份有限公司 | Thing networking intelligent gas table vertical scroll sealing washer and discharging device thereof |
-
2019
- 2019-01-24 CN CN201920118930.5U patent/CN209587280U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183526A (en) * | 2020-09-15 | 2022-03-15 | 成都秦川物联网科技股份有限公司 | Thing networking intelligent gas table vertical scroll sealing washer and discharging device thereof |
| CN114183526B (en) * | 2020-09-15 | 2023-11-14 | 成都秦川物联网科技股份有限公司 | Vertical shaft sealing ring of intelligent gas meter of Internet of things and discharging device of vertical shaft sealing ring |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191105 |
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| CF01 | Termination of patent right due to non-payment of annual fee |