CN208487202U - A kind of giant turbine pressure-measuring pipe plugging structure - Google Patents
A kind of giant turbine pressure-measuring pipe plugging structure Download PDFInfo
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- CN208487202U CN208487202U CN201820915946.4U CN201820915946U CN208487202U CN 208487202 U CN208487202 U CN 208487202U CN 201820915946 U CN201820915946 U CN 201820915946U CN 208487202 U CN208487202 U CN 208487202U
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- measuring pipe
- pressure
- sealing
- sealing bar
- plugging structure
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Abstract
The utility model provides a kind of giant turbine pressure-measuring pipe plugging structure, including sealing bar, screw thread is equipped on the outside of sealing bar, pressure-measuring pipe input end inner wall is equipped with the internal screw thread cooperated with sealing bar, sealing bar is equipped with the limiting section being in close contact with spiral case/tail water tube wall far from one end of pressure-measuring pipe, the bottom of limiting section is equipped with the mounting groove of annular, is equipped with sealing ring in mounting groove.The structure realizes the detachable closure to pressure-measuring pipe, and pressure-measuring pipe can utilize again, while guarantee block reliability.
Description
Technical field
The utility model relates to hydraulic turbine pressure-measuring pipe, in particular to a kind of giant turbine pressure-measuring pipe plugging structure.
Background technique
The parameter of the hydraulic turbine, the net water head (spiral case inlet and draft tube outlet pressure participate in calculating) including unit, unit
Stability parameter-pressure fluctuation of flow (spiral case differential pressure method) and unit is all that (generally φ's 32 is stainless by pressure-measuring pipe
Steel pipe) it measures and is calculated.Pressure-measuring pipe is generally embedded in concrete, and input end is connected with spiral case/tail water tube wall pressure tap,
Outlet end is connected with pressure gauge.When rupture leak occurs for pressure-measuring pipe, the data exception that pressure gauge is shown, and have leak in workshop
Phenomenon causes workshop ponding occur.The processing of pressure-measuring pipe road is extremely difficult, in order to solve drainage, can only to pressure-measuring pipe into
Mouth end is blocked, to guarantee the safe and stable operation of unit.
The method for blocking of pressure-measuring pipe is mainly two kinds at present: one, taking epoxy resin+curing agent filling pressure tap side
When method, epoxy mixture reach solidification and become solid, has the characteristics that closely knit, water resistant, anti-leakage are good, intensity is high, have simultaneously
The good craftsmanships such as adhesive force strong, normal-temperature operation, easy construction.The technical solution major defect: pressure-measuring pipe water flow very little, it is special
It is not after compressor emergency shutdown, pressure-measuring pipe water flow is static, pressure very little, the water flow stream in volute pressure steel pipe in unit running process
Fast high, pressure is big, according to the boundary layer theory of high speed hydraulics, is close to abrasive force of the inner surface by river of volute pressure steel pipe
It is larger, since the intensity of epoxy resin composition is larger, but it is more crisp；Due to being mingled with silt or other small-sized heavily fortified points in river
Hard floating material has biggish impact force to spiral case inner surface, and with the increase of unit runing time, the epoxy resin after solidification is mixed
It closes object and in turn results in pressure-measuring pipe vulnerable to impact failure and block and fail；Two, welding closure, the closure side are carried out to pressure-measuring pipe water inlet end
Method is welding closure plate plugging method.In order to avoid, since repair welding spot temperature is high, newly welding position due to material after cooling after repair welding
Contraction crack, which occurs, in difference leads to leak again, and the standard of different electrodes is selected according to different materials, carries out welding closure.It utilizes
The method of closure plate welding, due to since repair welding spot temperature is high, newly welding position after repair welding after cooling since the difference of material occurs
The hidden danger of contraction crack be it is existing, leak again is caused when serious；Simultaneously because the weldering that weld job can be generated in weld
Power is scooped out, the characteristic of weld original base material is changed.
And after both the above method is blocked, pressure-measuring pipe cannot utilize again, can only discard, and the pressure-measuring pipe is corresponding to be surveyed
The parameter of amount will never be able to obtain again in power plant's whole cycle, cannot understand the operating status of unit in time, give unit
Safe and stable operation bring hidden danger.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of giant turbine pressure-measuring pipe plugging structure, realizations pair
The detachable closure of pressure-measuring pipe, pressure-measuring pipe can utilize again, while guarantee block reliability.
A kind of in order to solve the above technical problems, the technical scheme adopted by the utility model is: giant turbine pressure-measuring pipe
Plugging structure, including sealing bar, sealing bar outside are equipped with screw thread, and pressure-measuring pipe input end inner wall is equipped with the interior spiral shell cooperated with sealing bar
Line, sealing bar are equipped with the limiting section being in close contact with spiral case/tail water tube wall far from one end of pressure-measuring pipe, and the bottom of limiting section is equipped with
The mounting groove of annular, mounting groove is interior to be equipped with sealing ring.
In preferred scheme, the protrusion of the limiting section bottom equipped at least one annular, the spiral case being connect with pressure-measuring pipe/
Tail water tube wall is equipped with the groove with male cooperation, and raised outer sheath is equipped with the sealing shroud of " u "-shaped, and sealing is set on raised and recessed
Between slot.
In preferred scheme, the input end of the pressure-measuring pipe is equipped with counterbore, and sealing bar is coupled with counterbore, sealing bar
Lower end is equipped with connecting rod, and sealing-plug is set in connecting rod, and sealing-plug is the up big and down small frustum of a cone, and plug sidewall, which squeezes, surveys pressure
Inside pipe wall.
In preferred scheme, the limiting slot installed for screwdriver is equipped on the upside of the limiting section, limiting slot is " ten " word slot
Or " Y " word slot or " X " word slot.
In preferred scheme, the sealing ring is " O " shape sealing ring.
A kind of giant turbine pressure-measuring pipe plugging structure provided by the utility model, passes through sealing bar and pressure-measuring pipe input end
Threaded connection realize that first layer blocks, the sealing ring that is arranged between limiting section and spiral case/tail water tube wall realizes that the second layer blocks,
The reliable sealing realized to pressure-measuring pipe is blocked by double-deck, prevents from continuing from pressure-measuring pipe leak, simultaneously as should be with regard to structure can
Dismantling connection structure, pressure-measuring pipe can utilize again, guarantee the safe and stable operation of unit.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and examples:
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is the top view of the utility model.
In figure: sealing bar 1, pressure-measuring pipe 2, limiting section 3, mounting groove 4, sealing ring 5, protrusion 6, groove 7, sealing shroud 8, counterbore
9, connecting rod 10, sealing-plug 11, limiting slot 12.
Specific embodiment
As shown in Figure 1, a kind of giant turbine pressure-measuring pipe plugging structure, including sealing bar 1, spiral shell is equipped on the outside of sealing bar 1
Line, 2 input end inner wall of pressure-measuring pipe are equipped with the internal screw thread that cooperate with sealing bar 1, the one end of sealing bar 1 far from pressure-measuring pipe 2 equipped with
The limiting section 3 that spiral case/tail water tube wall is in close contact, the bottom of limiting section 3 are equipped with the mounting groove 4 of annular, are equipped in mounting groove 4 close
Seal 5.Limiting section 3 and the sealing of spiral case/tail water tube wall faying face are realized by sealing ring 5.
In the present embodiment, sealing ring 5 is " O " shape sealing ring.
Realize the installation and single layer sealing of plugging structure by being threadedly engaged, the sealing ring 5 of setting realize limiting section 3 with
The sealing of spiral case/tail water tube wall faying face is realized the closure of pressure-measuring pipe 2 by the double-layer seal of setting, solves the prior art
In the drawbacks of cannot being reused with the connecting hole of pressure-measuring pipe, while secondary use pressure-measuring pipe bring cost is greatly saved,
It escorts for the safe and stable operation of unit.
3 bottom of limiting section is equipped with the protrusion 6 of at least one annular, and the spiral case connecting with pressure-measuring pipe 2/tail water tube wall is set
There is the groove 7 with 6 cooperation of protrusion, raised 6 outer sheaths are equipped with the sealing shroud 8 of " u "-shaped, and the setting of sealing shroud 8 is in protrusion 6 and groove 7
Between.The outer ring of sealing ring 5 is arranged in sealing shroud 8, and sealing shroud 8 and sealing ring 5 realize the double-layer seal to faying face, improve envelope
Stifled leakproofness；Moreover, because protrusion 6 with the cooperation of groove 7 and the sealing shroud 8 of " u "-shaped, make limiting section 3 with spiral case/tail
Water wall faying face is that broken line face is presented, and improves sealing and anti-leakage effect.
Preferably, the input end of the pressure-measuring pipe 2 is equipped with counterbore 9, and 9 inner wall of counterbore is equipped with the interior spiral shell cooperated with sealing bar 1
Line, sealing bar 1 are coupled with counterbore 9, and the lower end of sealing bar 1 is equipped with connecting rod 10, and sealing-plug 11 is set in connecting rod 10, close
Blocking 11 is the up big and down small frustum of a cone, and 11 sidewall extrusion pressure-measuring pipe of sealing-plug, 2 inner wall, the diameter of the upper end of sealing-plug 11 is greater than
The caliber of pressure-measuring pipe 2, less than the aperture of counterbore 9, the diameter of lower end is less than the caliber of pressure-measuring pipe 2.In the present embodiment, sealing-plug
11 material is rubber.
When specifically used, sealing bar 1 moves down during installing, and sealing-plug 11 is driven to move down, due to sealing
Plug 11 is the up big and down small frustum of a cone, and sealing-plug 11 realizes being again sealed off to pressure-measuring pipe 2 during moving down, it is steady to improve closure
It is qualitative.
As shown in Fig. 2, being equipped with the limiting slot 12 installed for screwdriver on the upside of the limiting section 3, limiting slot 12 is " ten " word
Slot or " Y " word slot or " X " word slot.
It is easy to use screwdriver to rotate limiting section 3 by the limiting slot 12 of setting, precession is facilitated to install.
The above embodiments are only the optimal technical scheme of the utility model, and are not construed as the limit for the utility model
System, the technical solution that the protection scope of the utility model should be recorded with claim, the technical solution recorded including claim
The equivalents of middle technical characteristic are protection scope.Equivalent replacement i.e. within this range is improved, also in the utility model
Protection scope within.
Claims (5)
1. a kind of giant turbine pressure-measuring pipe plugging structure, it is characterised in that: including sealing bar (1), be equipped on the outside of sealing bar (1)
Screw thread, pressure-measuring pipe (2) input end inner wall are equipped with the internal screw thread cooperated with sealing bar (1), and sealing bar (1) is far from pressure-measuring pipe (2)
One end is equipped with the limiting section (3) being in close contact with spiral case/tail water tube wall, and the bottom of limiting section (3) is equipped with the mounting groove of annular
(4), sealing ring (5) are equipped in mounting groove (4).
2. a kind of giant turbine pressure-measuring pipe plugging structure according to claim 1, it is characterised in that: the limiting section
(3) bottom is equipped with the protrusion (6) of at least one annular, and the spiral case connecting with pressure-measuring pipe (2)/tail water tube wall is equipped with and raised (6)
The groove (7) of cooperation, raised (6) outer sheath are equipped with the sealing shroud (8) of " u "-shaped, and sealing shroud (8) setting is in raised (6) and groove
(7) between.
3. a kind of giant turbine pressure-measuring pipe plugging structure according to claim 1, it is characterised in that: the pressure-measuring pipe
(2) input end is equipped with counterbore (9), and sealing bar (1) is coupled with counterbore (9), and the lower end of sealing bar (1) is equipped with connecting rod
(10), sealing-plug (11) are set in connecting rod (10), sealing-plug (11) is the up big and down small frustum of a cone, and sealing-plug (11) side wall squeezes
Press pressure-measuring pipe (2) inner wall.
4. a kind of giant turbine pressure-measuring pipe plugging structure according to claim 1, it is characterised in that: the limiting section
(3) upside is equipped with the limiting slot (12) installed for screwdriver, and limiting slot (12) is " ten " word slot or " Y " word slot or " X " word slot.
5. a kind of giant turbine pressure-measuring pipe plugging structure according to claim 1, it is characterised in that: the sealing ring
It (5) is " O " shape sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820915946.4U CN208487202U (en) | 2018-06-13 | 2018-06-13 | A kind of giant turbine pressure-measuring pipe plugging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820915946.4U CN208487202U (en) | 2018-06-13 | 2018-06-13 | A kind of giant turbine pressure-measuring pipe plugging structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208487202U true CN208487202U (en) | 2019-02-12 |
Family
ID=65251760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820915946.4U Active CN208487202U (en) | 2018-06-13 | 2018-06-13 | A kind of giant turbine pressure-measuring pipe plugging structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208487202U (en) |
-
2018
- 2018-06-13 CN CN201820915946.4U patent/CN208487202U/en active Active
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