CN205749129U - Airtight and watertight padding coefficient of horizontal pressure detection device - Google Patents
Airtight and watertight padding coefficient of horizontal pressure detection device Download PDFInfo
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- CN205749129U CN205749129U CN201620720348.2U CN201620720348U CN205749129U CN 205749129 U CN205749129 U CN 205749129U CN 201620720348 U CN201620720348 U CN 201620720348U CN 205749129 U CN205749129 U CN 205749129U
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Abstract
The utility model discloses a kind of airtight and watertight padding coefficient of horizontal pressure detection device, including the stuffing-box with packing cavity, it is plugged in the valve rod in described packing cavity, it is filled in described packing cavity the many groups packing ring for sealing between described stuffing-box and described valve rod, owing to compressing the gland of all described packing rings vertically, described detection device also includes being set on described valve rod and interior radial stress pressure-sensitive paper between perimembranous inside perimembranous and all described packing rings outside described valve rod, and/or, it is arranged at the outer radial stress pressure-sensitive paper between perimembranous outside the inner side perisporium of described packing cavity and all described packing rings；Packing ring described in each group is equipped with axial stress pressure-sensitive paper on the sidepiece of described gland.By the mensuration to coefficient of horizontal pressure each in sealing packing device, the Sealing Stress distribution situation of each sealing station in actual condition lower seal filling system can be calculated, in advance sealing reliability is carried out anticipation, it is to avoid the generation of leakage.
Description
Technical field
This utility model relates to a kind of airtight and watertight padding coefficient of horizontal pressure detection device.
Background technology
The packing seal using stuffing-box is generally required at industrial circles such as nuclear power, thermoelectricity, the energy.Packing seal is a kind of
Traditional gland seals, and its pressured lid produces thrust and compresses filler, forces filler to be pressed on the sealing surfaces (outer surface of axle
And annular seal space) above produce the radial force of sealing effectiveness, thus seal, this radial force presses index along whole pack length
Curve distribution.Airtight and watertight padding coefficient of horizontal pressure refers to the radial stress of stuffing-box and the ratio of axial stress, airtight and watertight padding side pressure system
The size of number is directly connected to the radial stress distribution situation between filler and axle, filler and stuffing-box internal face, airtight and watertight padding
Sealing property depends on the circumference pressure of the mechanical property of airtight and watertight padding, filler and axle and the lateral contact stress of stuffing-box and filler
Power is to affect the key parameter of its sealing reliability.Recent year is limited only to individual pen filler to the research of coefficient of horizontal pressure,
And the multi-turn filler coefficient of horizontal pressure close to actual condition is lacked deep probing into.
In patent in terms of the rare research to multi-turn filler coefficient of horizontal pressure, Chinese patent CN103267670B is open
A kind of detection device and method for detecting filler coefficient of horizontal pressure, it is mainly by relative with sealing space on housing
Answer and some resistance strain gages are set on the outer wall in region, thus gather housing microstrain diametrically, calculate radial stress, then
Difference according to axial stress Yu radial stress knows coefficient of horizontal pressure.Coefficient of horizontal pressure acquired in right such metering system is also
Imprecise, can not clearly know the coefficient of horizontal pressure between the coefficient of horizontal pressure between airtight and watertight padding and axle, axle and stuffing-box inwall,
Especially can not measure coefficient of horizontal pressure when using many group packing rings.
Summary of the invention
The purpose of this utility model is the shortcoming in order to overcome prior art, it is provided that a kind of airtight and watertight padding coefficient of horizontal pressure detection
Device.
For reaching above-mentioned purpose, the technical solution adopted in the utility model is: a kind of airtight and watertight padding coefficient of horizontal pressure detection dress
Put, including there is the stuffing-box of packing cavity, the valve rod being plugged in described packing cavity, being filled in described packing cavity for described
Between stuffing-box and described valve rod seal many groups packing ring, owing to compressing the gland of all described packing rings vertically, described
Detection device also includes being set on described valve rod and be positioned at outside described valve rod perimembranous inside perimembranous and all described packing rings
Between interior radial stress pressure-sensitive paper, and/or, be arranged at week outside the inner side perisporium of described packing cavity and all described packing rings
Outer radial stress pressure-sensitive paper between portion；Described interior radial stress pressure-sensitive paper/outer radial stress pressure-sensitive paper is hollow tube-shape, each
Organize described packing ring on the sidepiece of described gland, be equipped with axial stress pressure-sensitive paper, all of described axial stress pressure-sensitive paper
All in circular.
Preferably, described outer radial stress pressure-sensitive paper, described interior radial stress pressure-sensitive paper are respectively by a pressure-sensitive paper edge week
Hollow tube-shape is formed to winding.
Preferably, all of described axial stress pressure-sensitive paper is consistent with the cross sectional dimensions of described packing ring, described axle
It is laid on rotatably on described packing ring in circular around the axial line of described valve rod by a pressure-sensitive paper to stress pressure-sensitive paper.
Preferably, described stuffing-box includes the filler casing with through hole, and described filler casing is by removably connected
One casing and the second casing are constituted, and described first casing has semicolumnar first groove, and described second casing has semicolumn
The second groove, described first casing makes described first groove match with described second groove when matching fixing with described second casing
Close and form described through hole.
Further, described first casing has outwardly projection, and described second casing has the groove of indent, institute
State protruding and described fit depressions and realize coordinating location between described first groove and the second groove.
Further, described stuffing-box also includes being located at described via bottoms regularly and having the lower bolster of installing hole,
Described valve rod is located in described installing hole ordinatedly, described filler casing, encloses the space setting formation between lower bolster and valve rod
Constitute described packing cavity.
Further, described valve rod is fixing maybe can be located in described installing hole with sliding axially, and described is interior
Radial stress pressure-sensitive paper and/or described outer radial stress pressure-sensitive paper are positioned at the top of described lower bolster.
As a kind of specific embodiment, described first casing and described second casing are solid mutually by multiple bolt assemblies
Fixed connection.
Preferably, between described axial stress pressure-sensitive paper and the described gland of closest described gland, it is additionally provided with upper padding plate,
Described gland is pressed on described upper padding plate vertically.
Further, described detection device also includes the forcing press for applying described gland axial pressing force, for examining
Survey the load transducer of the thrust that described forcing press applies.
Due to the utilization of technique scheme, this utility model compared with prior art has the advantage that this practicality is new
The airtight and watertight padding coefficient of horizontal pressure detection device of type, its simple in construction, test process is simple and convenient.By in sealing packing device
The mensuration of each coefficient of horizontal pressure, can calculate the Sealing Stress distribution situation of each sealing station in actual condition lower seal filling system,
In advance sealing reliability is carried out anticipation, it is to avoid the generation of leakage.
Accompanying drawing explanation
Accompanying drawing 1 is the top view of the detection device of this utility model embodiment 1；
Accompanying drawing 2 be along Fig. 1 A-A to cross-sectional schematic；
Accompanying drawing 3 is the structural representation of the detection device of this utility model embodiment 2；
Accompanying drawing 4 is the structural representation of the detection device of this utility model embodiment 3；
Wherein: 1, filler casing；11, the first casing；12, the second casing；11a, projection；12a, groove；2, lower bolster；3、
Valve rod；4, packing ring；5, upper padding plate；6, gland；7, axial stress pressure-sensitive paper；8, outer radial stress pressure-sensitive paper；9, interior radial direction should
Power pressure-sensitive paper；10, bolt assembly.
Detailed description of the invention
With specific embodiment, the technical solution of the utility model is further elaborated below in conjunction with the accompanying drawings.
Embodiment 1
Seeing the airtight and watertight padding coefficient of horizontal pressure detection device shown in Fig. 1, Fig. 2, it includes having the stuffing-box of packing cavity, insert
The valve rod 3 that is located in packing cavity, it is filled in packing cavity one or more groups packing ring for sealing between stuffing-box and valve rod 3
4, being used for compressing vertically the gland 6 of all packing rings 4, in the present embodiment, packing ring 4 is set to 4 groups.
Specifically, shown in Figure 1, stuffing-box includes having the filler casing 1 of through hole, is located at above-mentioned through hole regularly
Bottom and there is the lower bolster 2 of installing hole, valve rod 3 is located in the installing hole of lower bolster 2 ordinatedly, in the present embodiment, valve rod 3
Match with installing hole and can arrange with sliding axially.Enclose, between filler casing 1, lower bolster 2 and valve rod 3, the space setting formation
Just packing cavity is constituted.
Filler casing 1 is made up of the first casing 11 removably connected and the second casing 12, and the first casing 11 has half
First groove of column, the second casing 12 has semicolumnar second groove, and the first casing 11 matches fixing with the second casing 12
Connecting just to make the first groove and the second groove match and form the above-mentioned through hole of this filler casing 1.Specifically, the first casing 11
On there is outwardly protruding 11a, the second casing 12 has the groove 12a of indent, protruding 11a is corresponding with groove 12a
The cooperation location coordinated and realize between the first groove and the second groove, thus form the through hole of filler casing 1, the most again by many groups
First casing 11 is fixed to be connected with the second casing 12 and just can be formed filler casing 1 by bolt assembly 10.This kind of filler casing 1 sets
Put structure primarily to follow-up test is easily removed pressure-sensitive paper after terminating, with avoid take out pressure-sensitive paper time drawing pressure-sensitive paper and
Cause the secondary extrusion of pressure-sensitive paper, affect measurement result.
Seeing shown in Fig. 1, Fig. 2, this detection device also includes being set on valve rod 3 and be positioned at perimembranous and institute outside valve rod 3
There are interior radial stress pressure-sensitive paper 9, the inner side perisporium being arranged at packing cavity and all packing rings 4 between perimembranous inside packing ring 4
Outer radial stress pressure-sensitive paper 8 between the perimembranous of outside, interior radial stress pressure-sensitive paper 9 and outer radial stress pressure-sensitive paper 8 are all in hollow
Tubular, and both of which is positioned at the top of lower bolster 2.Specifically, outer radial stress pressure-sensitive paper 8 is circumferentially wound by a pressure-sensitive paper
And the hollow tube-shape formed, this pressure-sensitive paper patch is touched on the through-hole wall of filler casing 1；Interior radial stress pressure-sensitive paper 9 be also by
The hollow tube-shape that one pressure-sensitive paper circumferentially winds and formed, this pressure-sensitive paper patch is touched in the outside perimembranous of valve rod 3.
This detection device also includes that multiple axial stress senses paper 7, and its quantity is consistent with the group number of packing ring 4, each
Group packing ring 4 is equipped with axial stress pressure-sensitive paper 7 on the sidepiece of gland 6, and all of axial stress pressure-sensitive paper 7 is all in annulus
Shape, its sectional dimension is consistent with the sectional dimension of packing ring 4.When specifically arranging, pressure-sensitive paper is cut in advance circumference disconnection
Circular, then it is laid on packing ring.Also set between the axial stress pressure-sensitive paper 7 and gland 6 of gland 6
Upper padding plate 5, gland 6 is had to be pressed on vertically on upper padding plate 5.
This detection device also includes the forcing press (not shown) for applying gland 6 axial pressing force, for detecting
The load transducer (not shown) of the thrust that forcing press applies, forcing press applies gland 6 with axial load thus along axle
To compressing all of packing ring 4.
Illustrating to detect in the present embodiment the detection method of device in detail below, it is carried out in accordance with the following steps:
For convenience of description, the above-below direction in below describing is with reference to above-below direction illustrated in fig. 2, that is the axle of valve rod 3
To.
(1) the first casing 11 and the second casing 12 are fixedly mounted form it into the filler casing 1 with through hole, by underlay
Plate 2 is fixed to the bottom of through hole on filler casing 1, then is penetrated by valve rod 3 in the installing hole of lower bolster 2, and makes itself and lower bolster 2
And filler casing 1 keeps fixing；
(2) inserting outer radial stress pressure-sensitive paper 8, valve rod 3 passes axially through this outer radial stress pressure-sensitive paper 8, and this external diameter
To the lower support of stress pressure-sensitive paper 8 on lower bolster 2, the inner side perisporium of its outer perimeter wall and packing cavity is (i.e. on filler casing 1
The inner side perisporium of through hole) match；
(3) all of packing ring 4 is inserted in packing cavity, and according to first inserting one group of packing ring 4, inserting one axially again
All of packing ring 4 is inserted successively in packing cavity by the order of stress pressure-sensitive paper 7 with axial stress pressure-sensitive paper 7 so that each group
The top of packing ring 4 is equipped with an axial stress pressure-sensitive paper 7；
(4) insert interior radial stress pressure-sensitive paper 9, be specially and interior radial stress pressure-sensitive paper 9 is overlapped to valve rod 3 so that it is join
It is located between the outer perimeter wall of valve rod 3 and the inner side perisporium of all packing rings 4 with closing；
(5) the axial stress pressure-sensitive paper 7 in top side be provided above upper padding plate 5, this upper padding plate 5 is positioned at outer radial stress
Between pressure-sensitive paper 8 and interior radial stress pressure-sensitive paper 9；Then gland 6 is overlapped to valve rod 3 and conflict downwards at upper padding plate 5 upper
End, loads the load preset vertically by forcing press to gland 6, with by upper padding plate 5 pressuring action in packing ring 4, and add
It is loaded onto the displacement reaching default；
(6), after end to be tested, first take out gland 6, then the first casing 11 is separated from the second casing 12, then by the
Two casings 12 separate with other parts, take out outer radial stress pressure-sensitive paper 8, upper padding plate 5, each axial stress pressure-sensitive paper the most successively
7 and interior radial stress pressure-sensitive paper 9, and carry out the mark of correspondence to distinguish；
(7) obtained the stress data information recorded on each stress pressure-sensitive paper by dedicated scan device scan, record each
Outer radial stress and the interior radial stress of layer packing ring 4 correspondence, and the axial stress pressure-sensitive paper of this packing ring 4 upper end records
Axial stress；
(8) according to formula: coefficient of horizontal pressure=radial stress/axial stress, calculate respectively and obtain each layer of packing ring 4 and fill out
Outer coefficient of horizontal pressure between material letter, the interior coefficient of horizontal pressure between each layer of packing ring 4 and valve rod 3, this outer coefficient of horizontal pressure is outer quiet
Coefficient of horizontal pressure, interior coefficient of horizontal pressure are interior quiet coefficient of horizontal pressure.
During above-mentioned calculating, when calculating the outer coefficient of horizontal pressure of single packing ring 4 and stuffing-box, then obtain this and fill out
The meansigma methods of the outer radial stress that material detects on the outer radial stress pressure-sensitive paper 8 corresponding to face, ring 4 whole outer circumferential, then root
According to formula: outer coefficient of horizontal pressure=outer radial stress/axial stress.Similarly, in calculating between single packing ring 4 and valve rod 3
During coefficient of horizontal pressure, then obtain detect on this packing ring 4 whole circumference interior radial stress pressure-sensitive paper 9 corresponding to medial surface interior
The meansigma methods of radial stress, further according to formula: interior coefficient of horizontal pressure=interior radial stress/axial stress.
Above-mentioned detection device, when arranging, also can make valve rod 3 be located in packing cavity with sliding axially.In above-mentioned test
During so that valve rod 3 moves axially in reciprocal fashion, then the interior coefficient of horizontal pressure measuring acquisition is interior dynamic coefficient of horizontal pressure.
According to the test result of above-mentioned each stress, also can carry out the external friction coefficient between packing ring 4 and packing cavity, fill out
The calculating of the coefficient of internal friction between material ring 4 and valve rod 3.As a example by packing ring 4 topmost, after test terminates, obtain this and fill out
Axial stress F that the axial stress pressure-sensitive paper of material ring 4 upper end recordsAxle 1, obtain the axial stress pressure-sensitive paper of this packing ring 4 lower end
Axial stress F recordedAxle 2, obtain outer radial stress F corresponding outside this packing ring 4External diameterWith interior radial stress FInternal diameter；Then root
According to formula μ s=(FAxle 1—FAxle 2)/FExternal diameterJust the external friction coefficient obtained between packing ring 4 and packing cavity can be calculated；According to formula μ s
=(FAxle 1—FAxle 2)/FInternal diameterJust the coefficient of internal friction obtained between packing ring 4 and valve rod 3 can be calculated.During above-mentioned measuring and calculating,
Outer radial stress FExternal diameter/ interior radial stress FInternal diameterPreferably choose the outer radial stress sense that packing ring 4 outside circumference/inside circumference is corresponding
The meansigma methods of the outer radial stress that in platen 8/, radial stress pressure-sensitive paper 9 detects/interior radial stress calculates, and so can obtain
Take the meansigma methods of external friction coefficient/coefficient of internal friction between the whole side of single packing ring and stuffing-box/valve rod.
Embodiment 2
Detection device shown in Figure 3, with embodiment 1, it differs primarily in that this detection device is only used for each layer
The mensuration of the interior coefficient of horizontal pressure between packing ring 4 and valve rod 3, the outside perimembranous of all of packing ring 4 is all with the inner side of packing cavity
Wall matches.
When using this detection device to detect, only save the step (2) in embodiment 1, other test processs basic with
Embodiment 1 is similar.Finally by the results of stress of interior radial stress pressure-sensitive paper 9 with each axial stress pressure-sensitive paper 7, calculate
Obtain the interior quiet coefficient of horizontal pressure between each layer of packing ring 4 and valve rod 3 (in test process, valve rod 3 is fixed) or interior dynamic coefficient of horizontal pressure
(in test process, valve rod 3 moves axially in reciprocal fashion).
Embodiment 3
According to the detection device shown in Fig. 4, with embodiment 1, it differs primarily in that this detection device is only used for each layer
The mensuration of the outer coefficient of horizontal pressure between packing ring 4 and stuffing-box.
When using this detection device to detect, only saving step (4) in embodiment 1, other test processs are basic and real
Execute example 1 similar.Finally by the results of stress of outer radial stress pressure-sensitive paper 8 with each axial stress pressure-sensitive paper 7, calculating obtains
Obtaining the outer coefficient of horizontal pressure between each layer of packing ring 4 and stuffing-box, this outer coefficient of horizontal pressure is outer quiet coefficient of horizontal pressure.
To sum up, the simple in construction of this airtight and watertight padding side pressure detection device, test process is simple and convenient.By to airtight and watertight padding
The mensuration of each coefficient of horizontal pressure in device, can calculate the Sealing Stress distribution of each sealing station in actual condition lower seal filling system
Situation, carries out anticipation to sealing reliability in advance, it is to avoid the generation of leakage.
Above-described embodiment only for technology of the present utility model design and feature are described, its object is to allow and is familiar with technique
Personage will appreciate that content of the present utility model and implement according to this, protection domain of the present utility model can not be limited with this.
All according to this utility model spirit made equivalence change or modify, all should contain protection domain of the present utility model it
In.
Claims (10)
1. an airtight and watertight padding coefficient of horizontal pressure detection device, including having the stuffing-box of packing cavity, being plugged in described packing cavity
Valve rod, be filled in described packing cavity between described stuffing-box and described valve rod seal many groups packing ring, due to edge
The gland of all described packing rings of axial compression, it is characterised in that: described detection device also includes being set on described valve rod also
Interior radial stress pressure-sensitive paper between perimembranous inside perimembranous and all described packing rings outside described valve rod, and/or, arrange
Outer radial stress pressure-sensitive paper between perimembranous outside the inner side perisporium and all described packing rings of described packing cavity；Described internal diameter
Being hollow tube-shape to stress pressure-sensitive paper/outer radial stress pressure-sensitive paper, described in each group, packing ring is on the sidepiece of described gland
Being equipped with axial stress pressure-sensitive paper, all of described axial stress pressure-sensitive paper is all in circular.
Airtight and watertight padding coefficient of horizontal pressure the most according to claim 1 detection device, it is characterised in that: described outer radial stress sense
Platen, described interior radial stress pressure-sensitive paper are circumferentially wound by a pressure-sensitive paper respectively and form hollow tube-shape.
Airtight and watertight padding coefficient of horizontal pressure the most according to claim 1 detection device, it is characterised in that: all of described axially should
Power pressure-sensitive paper is consistent with the cross sectional dimensions of described packing ring, described axial stress pressure-sensitive paper by a pressure-sensitive paper around described valve
The axial line of bar is laid on described packing ring rotatably in circular.
Airtight and watertight padding coefficient of horizontal pressure the most according to claim 1 detection device, it is characterised in that: described stuffing-box includes tool
The filler casing of through hole, described filler casing is had to be made up of the first casing removably connected and the second casing, described first case
Having semicolumnar first groove on body, described second casing has semicolumnar second groove, described first casing and described second
Make described first groove match with described second groove when casing matches fixing and form described through hole.
Airtight and watertight padding coefficient of horizontal pressure the most according to claim 4 detection device, it is characterised in that: described first casing has
Outwardly projection, described second casing has a groove of indent, described protruding realizes described with described fit depressions
Cooperation location between first groove and the second groove.
Airtight and watertight padding coefficient of horizontal pressure the most according to claim 4 detection device, it is characterised in that: described stuffing-box also includes
Being located at described via bottoms regularly and have the lower bolster of installing hole, described valve rod is located in described installing hole ordinatedly,
Described filler casing, enclose between lower bolster and valve rod set formation space constitute described packing cavity.
Airtight and watertight padding coefficient of horizontal pressure the most according to claim 6 detection device, it is characterised in that: described valve rod is fixed or energy
It is located in described installing hole with enough sliding axially, described interior radial stress pressure-sensitive paper and/or described outer radial stress
Pressure-sensitive paper is positioned at the top of described lower bolster.
Airtight and watertight padding coefficient of horizontal pressure the most according to claim 4 detection device, it is characterised in that: described first casing and institute
State the second casing to be fixedly connected by multiple bolt assemblies.
Airtight and watertight padding coefficient of horizontal pressure the most according to claim 1 detection device, it is characterised in that: closest described gland
Being additionally provided with upper padding plate between described axial stress pressure-sensitive paper and described gland, described gland is pressed on described upper padding plate vertically
On.
Airtight and watertight padding coefficient of horizontal pressure the most according to claim 9 detection device, it is characterised in that: described detection device is also
Including the forcing press for applying described gland axial pressing force, for detecting the load biography of the thrust that described forcing press applies
Sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620720348.2U CN205749129U (en) | 2016-07-11 | 2016-07-11 | Airtight and watertight padding coefficient of horizontal pressure detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620720348.2U CN205749129U (en) | 2016-07-11 | 2016-07-11 | Airtight and watertight padding coefficient of horizontal pressure detection device |
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| CN205749129U true CN205749129U (en) | 2016-11-30 |
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| CN201620720348.2U Active CN205749129U (en) | 2016-07-11 | 2016-07-11 | Airtight and watertight padding coefficient of horizontal pressure detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973709A (en) * | 2016-07-11 | 2016-09-28 | 苏州宝骅机械技术有限公司 | Device for detecting lateral pressure coefficients of sealing packing |
| CN106959244A (en) * | 2017-05-24 | 2017-07-18 | 湖南科技大学 | A kind of lateral pressure test device and method for coal petrography sample |
| CN111119860A (en) * | 2019-12-23 | 2020-05-08 | 山东科技大学 | Pressure bar for sensing pressure distribution state in hole |
-
2016
- 2016-07-11 CN CN201620720348.2U patent/CN205749129U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973709A (en) * | 2016-07-11 | 2016-09-28 | 苏州宝骅机械技术有限公司 | Device for detecting lateral pressure coefficients of sealing packing |
| CN106959244A (en) * | 2017-05-24 | 2017-07-18 | 湖南科技大学 | A kind of lateral pressure test device and method for coal petrography sample |
| CN106959244B (en) * | 2017-05-24 | 2019-02-26 | 湖南科技大学 | A kind of lateral pressure test device and method for coal petrography sample |
| CN111119860A (en) * | 2019-12-23 | 2020-05-08 | 山东科技大学 | Pressure bar for sensing pressure distribution state in hole |
| CN111119860B (en) * | 2019-12-23 | 2023-01-10 | 山东科技大学 | Pressure bar for sensing pressure distribution state in hole |
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Address after: Shuangfeng town Taicang city Suzhou City, Jiangsu province 215415 rich economic development zone Patentee after: Suzhou Bao Hua sealing Polytron Technologies Inc Address before: Shuangfeng town Taicang city Suzhou City, Jiangsu province 215415 rich economic development zone Patentee before: Suzhou Baohua Mechanical Technology Co., Ltd. |