CN208764421U - A kind of valve packing seal device - Google Patents
A kind of valve packing seal device Download PDFInfo
- Publication number
- CN208764421U CN208764421U CN201821527582.9U CN201821527582U CN208764421U CN 208764421 U CN208764421 U CN 208764421U CN 201821527582 U CN201821527582 U CN 201821527582U CN 208764421 U CN208764421 U CN 208764421U
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- valve
- stuffing
- air bag
- gland
- box
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Abstract
The utility model discloses a kind of valve packing seal device, including valve body, the valve deck being arranged on valve body and the valve rod for being supported in valve deck and extending to valve body cavity；Stuffing-box is provided between the valve rod and valve deck, stuffing-box upper end is provided with gland, and gland is connect with valve deck upper surface, and filler is provided in stuffing-box；Compensation air bag is provided between the gland and stuffing-box, one perforative pipeline in longitudinal direction is set on gland, the aeration aperture of compensation air bag is connected with gas tube, and gas tube passes through pipeline and connect with external inflation device, is equipped with check valve at compensation air bag aeration aperture；Gasket is provided between compensation air bag and stuffing-box.The purpose of the utility model is to provide the stuffing seals that one kind can compensate filler longitudinal void automatically, and structure is simple, have auto-alarm function, simplify stuffing-box interior design, easily fabricated and installation.
Description
Technical field
The utility model belongs to valve mechanism design field, and in particular to a kind of valve packing seal device.
Background technique
Valve seal can be divided into static seal and dynamic sealing, and valve usually needs to use dynamic sealing mechanism there are two position, and one
It is valve seat, the sealing at valve living, another is moving lever pilot seal.Valve dynamic sealing is that the key point of valve design is also difficult
Point, leakage will affect the normal operation of system, cause biggish economic loss, with the development of industrial technology, various valves
Requirement to its dynamic sealing mechanism and material is also higher and higher, it is desirable that has high-wearing feature, high leakproofness and stronger anti-corruption
Corrosion can wait, to adapt to the bad working environments such as high temperature, high pressure and low temperature.
Packing seal structure is most widely used a kind of movable sealing structure in valve, is generally used for valve cap of valve and valve rod
Between sealing.Filler is packed into after stuffing-box, generation radial force is compressed axially to it through gland, and generate closely with valve rod
Contact is used with continuous, and filler will be worn, when generation gap is axially compressed filler on filler longitudinal direction
Radial force, which becomes smaller, cannot be in close contact with valve rod and be leaked, and sealing effect is caused to decline.People can come with certain methods
Alleviate sealing structure and wears this problem, thus extend the service life of valve, but the effect of this method is limited, and extends
Using the time it is also shorter.
Utility model content
Goal of the invention: in view of the deficienciess of the prior art, the purpose of the utility model is to provide one kind to mend automatically
The stuffing seal of filler longitudinal void is repaid, structure is simple, has automatic reminding function, simplify stuffing-box interior design,
Easily fabricated and installation.
Technical solution: in order to achieve the above-mentioned object of the invention, the technical solution adopted in the utility model is as follows: a kind of valve is filled out
Sealing device is expected, including valve body, the valve deck being arranged on valve body and the valve rod for being supported in valve deck and extending to valve body cavity；Described
Stuffing-box is provided between valve rod and valve deck, stuffing-box upper end is provided with gland, and gland is connect with valve deck upper surface,
Filler is provided in stuffing-box；It is provided with compensation air bag between the gland and stuffing-box, is arranged one on gland
Longitudinally perforative pipeline, the aeration aperture for compensating air bag are connected with gas tube to item, and gas tube passes through pipeline and external inflation device connects
It connects, is equipped with check valve at compensation air bag aeration aperture；Gasket is provided between compensation air bag and stuffing-box.
Preferably, being provided with the second gasket between compensation air bag and gland, compensation is provided on the second gasket
The hole that airbag inflation pipe passes through.
Preferably, compensation air bag is structure as a whole with the second gasket.
Preferably, the second gasket is rubber sheet gasket or resin gasket.
Preferably, stopple is arranged at hole on the pipeline of gland.
Preferably, strain gauge pressure sensor is arranged on the gasket above stuffing-box.
It is connect preferably, autoalarm is arranged outside gland with strain gauge pressure sensor, it is automatic to report
Alert device includes A/D converter, single-chip microcontroller, buzzer, display screen and rechargeable battery, the strain gauge pressure sensor and A/D
Converter is connected with battery, and A/D converter is connect with single-chip microcontroller；Single-chip microcontroller is connect with display screen and buzzer；Wherein A/D is converted
Device, single-chip microcontroller, buzzer and display screen are connected with rechargeable battery, and rechargeable battery is equipped with charging interface.
The utility model has the advantages that compared with prior art, the utility model has the advantage that be filled out by compensation air bag inflation compensation
The gap that grinding abrasion generates, so that the radial force of filler remains unchanged, filler is in close contact always with valve rod, and valve is not let out
Dew.It is not necessary that filler is added in valve disassembly again, stuffing-box internal structure is simple, manufactures easy for installation, single-chip microcontroller and pressure biography
The setting of sensor can judge automatically the radial pressure of filler, and automatic prompt operator is compensation air bag inflation in time, and
It can judge aeration quantity, it will not there is a situation where overinflation or under-inflation.
Detailed description of the invention
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is Fig. 1 partial structurtes enlarged drawing；
Fig. 3 is alarm 11 and 10 annexation figure of strain gauge pressure sensor.
Specific embodiment
The utility model is furtherd elucidate with reference to the accompanying drawing.
As depicted in figs. 1 and 2, a kind of valve packing seal device, including valve body 1,2 and of the valve deck being arranged on valve body 1
It is supported in valve deck 2 and extends to the valve rod 3 of 1 chamber of valve body；Stuffing-box 4,4 upper end of stuffing-box are provided between valve rod 3 and valve deck 2
It is provided with gland 5, gland 5 is connect with 2 upper surface of valve deck, is provided with filler in stuffing-box 4；Gland 5 with
It is provided with compensation air bag 6 between stuffing-box 4, the perforative pipeline 12 in a longitudinal direction is set on gland 5, compensation air bag 6 fills
Stomata is connected with gas tube, and gas tube passes through pipeline 12 and connect with external inflation device, is equipped at compensation 6 aeration aperture of air bag single
To valve；Gasket 7 is provided between compensation air bag 6 and stuffing-box 4.The working principle of the utility model is: being filled out in stuffing-box 4
Expect and filler is compressed by gland 5, being compensated in air bag 6 at this time and being in compact state without gas, gland 5 makees filler
It is compressed axially generation radial force, and generates close contact with valve rod 3, is used with continuous, filler will wear, fill out
Material generates gap on longitudinal direction, is inflated at this time by external air charging system to compensation air bag 6, and compensation 6 volume of air bag increase is mended
The longitudinal void that filler abrasion generates is repaid to be in close contact with valve rod 3 always so that the radial force of filler remains unchanged.
In order to reduce the friction between compensation air bag 6 and gland 5, extends the service life of compensation air bag 6, compensating
It is provided with the second gasket 8 between air bag 6 and gland 5, there are the holes that compensation 6 gas tube of air bag passes through on the second gasket 8.It is excellent
Selection of land, the second gasket 8 are to be separately provided or compensate air bag 6 to be structure as a whole with the second gasket 8, and such as the second gasket 8 is rubber
Gasket, and compensation air bag 6 be integrally formed, or compensation air bag 6 be bonded in it is into a single integrated structure on the second gasket 8.Second gasket 8
For rubber sheet gasket or resin gasket.Thus one it can will compensate air bag 6 and be directly installed on the lower end of gland 5, be not required to
Separately installed gasket again.
Stopple 9 is arranged at hole on the pipeline 12 of gland 5 to guarantee not reveal at pipeline 12.
In order to find that filler is worn in time, artificially compensation air bag 6 is inflated, and can judge aeration quantity, Bu Huifa
The case where raw overinflation or under-inflation.Strain gauge pressure sensor 10 is set on the gasket 7 above stuffing-box 4,
Strain chip architecture: it is made of strain sensor, substrate and coating, lead-out wire three parts.Strain sensor is generally by gold
Belong to silk, metal foil (high resistivity material) composition, it is converted to mechanical strain the variation of resistance.Substrate and coating rise solid
Fixed and protection sensing element, transmitting strain and electric insulation effect.The thickness of metal foil is usually 0.002~0.008mm.Strain
Piece has the advantages that thickness is small, operating current is big, the service life is long, suitable for the stuffing seal of the utility model, hardly accounts for
According to space, valve airtightness will not be impacted.Strain gauge pressure sensor 10 can be bonded on gasket 7, be strained
Chip pressure sensor 10 is BX120-3AA model.
Autoalarm 11 is arranged outside gland 5 to connect with strain gauge pressure sensor 10, as shown in figure 3,
Autoalarm 11 includes A/D converter, single-chip microcontroller, buzzer, display screen and rechargeable battery, the strain chip pressure sensing
Device 10 is connect with A/D converter and battery, and A/D converter is connect with single-chip microcontroller, and single-chip microcontroller is connect with display screen and buzzer,
Middle A/D converter, single-chip microcontroller, buzzer and display screen are connected with rechargeable battery, and rechargeable battery has charging interface, can be connected
External power supply charging.The working principle of autoalarm 11 is: strain gauge pressure sensor 10 acquires filler after initial installation
7 pressure of superior shim, the pressure signal of acquisition are analog signal, are then converted to digital signal biography by A/D converter
Single-chip microcontroller is given, pressure signal at this time is set on single-chip microcontroller as rated pressure, and set pressure range, use process
Middle strain gauge pressure sensor 10 acquires pressure signal at any time and sends single-chip microcontroller to, and single-chip microcontroller is by pressure signal and rated pressure
Range compares, and when being lower than pressure limit, single-chip microcontroller controls buzzer and issues the sound, and pressure information is shown on a display screen
It is referred to for operator.After alarm sounds, hypotony is prompted, illustrates filler serious wear, it is longitudinal to generate gap, it should be timely
For the compensation inflation compensation of air bag 6 gap, it is inflated to until pressure on display reaches rated pressure value.Wherein single-chip microcontroller is 51 single
Piece machine, such as the STC of macrocrystalline.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (7)
1. a kind of valve packing seal device, it is characterised in that: including valve body (1), be arranged valve deck (2) on valve body (1) and
It is supported in valve deck (2) and extends to the valve rod (3) of valve body (1) chamber；Filler is provided between the valve rod (3) and valve deck (2)
Letter (4), stuffing-box (4) upper end are provided with gland (5), and gland (5) is connect with valve deck (2) upper surface, stuffing-box (4)
Inside it is provided with filler；It is provided between the gland (5) and stuffing-box (4) and compensates air bag (6), on gland (5)
One perforative pipeline in longitudinal direction (12) is set, and the aeration aperture of compensation air bag (6) is connected with gas tube, and gas tube passes through pipeline (12)
It is connect with external inflation device, is equipped with check valve at compensation air bag (6) aeration aperture；It compensates between air bag (6) and stuffing-box (4)
It is provided with gasket (7).
2. valve packing seal device according to claim 1, it is characterised in that: in compensation air bag (6) and gland
(5) it is provided between the second gasket (8), the hole that compensation air bag (6) gas tube passes through is provided on the second gasket (8).
3. valve packing seal device according to claim 2, it is characterised in that: compensation air bag (6) and the second gasket (8)
It is structure as a whole.
4. valve packing seal device according to claim 2 or 3, it is characterised in that: the second gasket (8) is rubber sheet gasket
Or resin gasket.
5. valve packing seal device according to claim 1, it is characterised in that: the pipeline (12) in gland (5)
Stopple (9) are set at upper hole.
6. valve packing seal device according to claim 1, it is characterised in that: the gasket (7) above stuffing-box (4)
Upper setting strain gauge pressure sensor (10).
7. valve packing seal device according to claim 6, it is characterised in that: be arranged certainly outside gland (5)
Dynamic alarm (11) are connect with strain gauge pressure sensor (10), autoalarm (11) include A/D converter, single-chip microcontroller,
Buzzer, display screen and rechargeable battery；The strain gauge pressure sensor (10) connect with A/D converter and battery, and A/D turns
Parallel operation is connect with single-chip microcontroller；Single-chip microcontroller is connect with display screen and buzzer；Wherein A/D converter, single-chip microcontroller, buzzer and display
Screen is connected with rechargeable battery, and rechargeable battery is equipped with charging interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821527582.9U CN208764421U (en) | 2018-09-19 | 2018-09-19 | A kind of valve packing seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821527582.9U CN208764421U (en) | 2018-09-19 | 2018-09-19 | A kind of valve packing seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208764421U true CN208764421U (en) | 2019-04-19 |
Family
ID=66135962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821527582.9U Active CN208764421U (en) | 2018-09-19 | 2018-09-19 | A kind of valve packing seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208764421U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185805A (en) * | 2019-06-20 | 2019-08-30 | 金华市唯创机械技术研发有限公司 | A kind of valve of the detachable valve rod with leakage-proof structure |
| CN115930020A (en) * | 2022-12-28 | 2023-04-07 | 江苏大明波纹管有限公司 | Corrugated expansion joint with sealing filler structure |
| CN117167506A (en) * | 2023-11-02 | 2023-12-05 | 泰伦机械(苏州)有限公司 | Adjusting valve capable of compensating filling materials |
-
2018
- 2018-09-19 CN CN201821527582.9U patent/CN208764421U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185805A (en) * | 2019-06-20 | 2019-08-30 | 金华市唯创机械技术研发有限公司 | A kind of valve of the detachable valve rod with leakage-proof structure |
| CN115930020A (en) * | 2022-12-28 | 2023-04-07 | 江苏大明波纹管有限公司 | Corrugated expansion joint with sealing filler structure |
| CN117167506A (en) * | 2023-11-02 | 2023-12-05 | 泰伦机械(苏州)有限公司 | Adjusting valve capable of compensating filling materials |
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