CN210981685U - Filler leakproofness detection device - Google Patents
Filler leakproofness detection device Download PDFInfo
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- CN210981685U CN210981685U CN201922176575.XU CN201922176575U CN210981685U CN 210981685 U CN210981685 U CN 210981685U CN 201922176575 U CN201922176575 U CN 201922176575U CN 210981685 U CN210981685 U CN 210981685U
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- packing
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- valve rod
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Abstract
The utility model discloses a packing leakproofness detection device, including support frame, drive assembly, fixing device and packing assembly, the support frame includes upper plate, lower plate and support column, fixing device includes the packing clamp plate, the packing device includes hollow packing box, upper plate, lower plate are fixed mutually through the support column, the telescopic shaft coaxial coupling of drive assembly has the valve rod, the lower extreme of valve rod is worn out the packing clamp plate and is movably set up in the packing box, the packing clamp plate is laminated with the valve rod seal, the packing box is fixed with the lower plate, the lower plate is seted up with the first through-hole that hollow portion corresponds in the packing box; the advantage be drive assembly with the support frame fixed mutually, drive the valve rod motion through drive assembly's telescopic shaft and can effectively simulate the removal of piston in the valve, drive assembly output shaft fixedly connected with pressure sensor simultaneously can monitor the pressure of packing in the stuffing box through pressure sensor to whether the gasket of judgement test that can be convenient takes place to leak.
Description
Technical Field
The utility model relates to a leakproofness detection area, concretely relates to packing leakproofness detection device.
Background
In the field of sealing element applications, gaskets are widely used as a sealing element arranged between the sealing surfaces to prevent fluid leakage, i.e. a packing for sealing. The gap leakage between devices to be sealed is prevented by using a gasket as an intermediate medium, and therefore, the stability of the sealing performance of the gasket largely determines the reliability of the sealing of the devices. It can be seen that testing the sealability of the gasket is a necessary procedure prior to mass production of the sealable gasket. Meanwhile, the use environments of the gasket are complex and various, such as an acid environment, an alkaline environment, a high-pressure environment and the like, and the specification requirement of the gasket is high when the gasket is used in the complex environment, so that the sealing state of the used gasket under different use environments needs to be detected, namely the durability of the gasket in the complex environment needs to be tested; especially, the gasket used as a sealing element at the joint of the valve is influenced by factors such as vibration of the valve rod, reciprocating motion of the valve rod and the like in the using process, so that the testing of the using condition of the sealing gasket at the joint is particularly important.
The existing gasket detection device is mostly used for detecting the sizes of gaskets, such as the size, the parallelism and the roundness, and therefore the device which has a simple structure and can realize the detection of the sealing performance under various use environments is needed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the packing sealing performance detection device is simple in structure and convenient to use, and can detect the sealing performance of the gasket in different use environments.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a stuffing tightness detection device comprises a support frame, a driving assembly, a fixing device and a stuffing assembly, wherein the support frame comprises an upper bottom plate, a lower bottom plate and support columns, the fixing device and the stuffing assembly are arranged between the upper bottom plate and the lower bottom plate, the fixing device comprises a stuffing pressing plate, the stuffing device comprises a hollow stuffing box, the upper bottom plate and the lower bottom plate are fixed through the support columns, the driving assembly is fixed with the upper bottom plate, a telescopic shaft of the driving assembly is coaxially connected with a valve rod, the lower end of the valve rod penetrates out of the stuffing pressing plate, the lower end of the valve rod is movably arranged in the stuffing box, the stuffing pressing plate is detachably and fixedly arranged on the upper end surface of the stuffing box and is used for compressing stuffing, and the stuffing box is fixed with the lower bottom plate, the lower base plate is provided with a first through hole corresponding to the hollow part of the stuffing box.
Preferably, the stuffing box with the lower plate between still be provided with the backup pad, the integrative fixed outstanding sealing ring that is provided with in lower bottom surface of stuffing box, the up end of backup pad seted up with the corresponding seal groove of sealing ring, the middle part of backup pad seted up with the corresponding second through-hole of first through-hole, the stuffing box with the backup pad can dismantle fixed the setting, the backup pad with the lower plate fixed.
Preferably, the valve rod, the packing pressing plate and the packing box are coaxially arranged, the middle part of the outer side of the packing box is provided with an installation platform, and the packing pressing plate is detachably fixed on the packing box through bolts.
Preferably, the lower end surface of the packing pressing plate is fixedly provided with a packing pressing sleeve, and the packing pressing sleeve and the valve rod are coaxially arranged.
Preferably, the telescopic shaft of the driving assembly is fixedly connected with a pressure sensor, and the upper end of the valve rod is fixed with the pressure sensor through a connector in threaded connection.
Preferably, the device further comprises a position detection assembly for detecting the stroke of the valve rod, the position detection assembly comprises a baffle fixed with the valve rod, and a displacement sensor for detecting the position of the baffle is fixedly arranged on the stuffing box.
Preferably, the driving assembly comprises a hydraulic cylinder, the hydraulic cylinder is fixed with the upper base, and a telescopic shaft of the hydraulic cylinder is detachably fixed with the valve rod.
Compared with the prior art, the utility model has the advantages that drive assembly with the support frame fixed mutually, the flexible axle drive valve rod motion through drive assembly can effectively simulate the removal of piston in the valve, drive assembly output shaft fixedly connected with pressure sensor simultaneously can monitor the packing box internal pressure through pressure sensor to whether the gasket of judgement test that can be convenient takes place to leak. The middle part of the stuffing box is a hollow part, and the first through hole and the second through hole which are arranged below can fill environment media in different states into the stuffing box, such as acidic liquid, acidic gas and the like, so that simulation of different working environments is realized, and the sealing performance of the packing, namely a gasket, which is arranged between the stuffing pressing plate and the stuffing box is tested. The baffle that sets up simultaneously can effectively monitor the displacement stroke of valve rod with displacement sensor's cooperation, prevents the collision phenomenon that the excessive removal of valve rod appears. The outer side of the stuffing box is provided with the mounting table, and the existing heater or refrigerator can be mounted at the position, so that the heating or cooling of an environment medium in the stuffing box is realized, a complex working condition environment for the gasket to work is simulated, and the sealing performance and the service life of the gasket are conveniently tested.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is one of the schematic cross-sectional views of FIG. 1;
FIG. 3 is a second schematic cross-sectional view of FIG. 1;
FIG. 4 is a schematic view of the installation structure of the packing assembly of the present invention;
fig. 5 is a schematic cross-sectional view of fig. 4.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
A packing sealing performance detection device comprises a support frame 1 driving assembly, a fixing device and a packing assembly, wherein the support frame 1 comprises an upper bottom plate 1.1, a lower bottom plate 1.2 and support columns 1.3, the fixing device and the packing assembly are arranged between the upper bottom plate 1.1 and the lower bottom plate 1.2, the fixing device comprises a packing press plate 4, the packing device comprises a hollow packing box 3, the upper bottom plate 1.1 and the lower bottom plate 1.2 are fixed through the support columns 1.3, the driving assembly is fixed with the upper bottom plate 1.1 and is a hydraulic cylinder 2, a telescopic shaft of the hydraulic cylinder 2 is fixedly connected with a pressure sensor 5, an adapter 7 in threaded connection with the upper end of a valve rod 6 is fixed with the pressure sensor 5, the packing press plate 4 is detachably arranged on the upper end face of the packing box 3 through a fastening bolt 10, a packing press sleeve 8 is fixedly arranged on the lower end face of the packing press plate 4, the packing press sleeve 8 and the valve rod 6 are, Packing pressing sleeve 8, wherein the middle part of packing box is provided with lug 19, press 8 packing through packing to compress tightly packing 18 for packing 18 is airtight between gasket and packing box 3, the valve rod 6 promptly, and the vertical activity setting of the lower extreme of valve rod 6 is in packing box 3, above-mentioned valve rod 6, packing clamp plate 4, the equal coaxial setting of packing box 3, the middle part in the 3 outsides of packing box is provided with the mount table 9 that is used for installing the hot plate simultaneously, packing clamp plate 4 can dismantle fixedly in packing box 3 through the bolt.
Still include the position detection subassembly that is used for detecting the stroke of valve rod 6 in the support frame 1, the position detection subassembly includes the baffle 16 fixed mutually with valve rod 6, and the fixed displacement sensor 17 that is used for detecting the baffle 16 position that is provided with of stuffing box 3 simultaneously.
The utility model discloses a working process: the gasket is arranged between the packing pressing sleeve 8 and the packing box 3 by penetrating through the valve rod 6, namely, the gasket is arranged below the packing pressing sleeve 8, and the packing pressing plate 4 is pressed by the fastening bolt 10, so that the packing pressing plate 4 and the packing pressing sleeve 8 press the gasket. After the installation, the liquid environment medium or the gas environment medium is filled into the stuffing cavity of the stuffing box 3, namely the hollow part of the stuffing box 3, through the first through hole 14 and the second through hole 15 by the hydraulic pump or the air pump. Through the cooperation of the sealing ring 12 arranged at the bottom of the stuffing box 3 and the sealing groove 13 arranged on the upper end face of the supporting plate 11, the leakage of the stuffing from the matching of the stuffing box 3 and the supporting plate 11 can be effectively avoided, and the reliability of the device is improved. As the packing pressing sleeve 8 presses the packing, the packing 18 is in sealing fit with the valve rod 6 so as to seal the space in the stuffing box 3; according to different fillers, such as acidic liquid, acidic gas and the like, the gasket sealing performance under different environmental medium states can be tested. Simultaneously, the telescopic reciprocating motion of the hydraulic cylinder 2 can effectively simulate the working condition that the gasket is used as a sealing element to be filled at the joint of the valve, and further realize the simulation test of the gasket under different working states. In the working process of the hydraulic cylinder 2, the baffle 16 and the valve rod 6 are fixed, so that the baffle 16 can move synchronously along with the movement of the telescopic shaft of the hydraulic cylinder 2, the detection of the position of the valve rod 6 can be accurately realized through the matching of the displacement sensor 17 corresponding to the baffle 16, the moving distance of the telescopic shaft of the hydraulic cylinder 2 is controlled, and accidents such as collision and the like in the simulation detection process are avoided. The pressure sensor 5 that sets up simultaneously can detect the pressure that bears in the 6 reciprocating motion engineering of valve rod, through the pressure of the adjustable stuffing box 3 internal environment medium of hydraulic pump or air pump to the realization is to the simulation of different pressure operating modes, thereby is convenient for realize the test to gasket leakproofness under the different pressure environment. In the subsequent detection and display process, the visual judgment of the sealing performance of the gasket can be realized by monitoring the pressure change of the hydraulic pump or the air pump, and meanwhile, a sensor corresponding to the filled environment medium can be arranged at the upper end of the stuffing box 3, for example, a gas detector is used for detecting the gaseous environment medium to judge whether the stuffing 18 leaks under the working environment.
Meanwhile, the mounting table 9 is arranged on the outer side of the stuffing box 3, a heater or a refrigerator can be mounted at the mounting table 9, and the environment medium in the stuffing box 3 is conveniently heated or cooled, so that the simulation of various working condition environments is realized, and the detection of the sealing performance of the gaskets in different working environments is realized.
The above-described embodiments are only preferred embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes and modifications can be made, which are within the scope of the present invention.
Claims (7)
1. A stuffing tightness detection device is characterized by comprising a support frame, a driving assembly, a fixing device and a stuffing assembly, wherein the support frame comprises an upper bottom plate, a lower bottom plate and support columns, the fixing device and the stuffing assembly are arranged between the upper bottom plate and the lower bottom plate, the fixing device comprises a stuffing pressing plate, the stuffing assembly comprises a hollow stuffing box, the upper bottom plate and the lower bottom plate are fixed through the support columns, the driving assembly is fixed with the upper bottom plate, a telescopic shaft of the driving assembly is coaxially connected with a valve rod, the lower end of the valve rod penetrates out of the stuffing pressing plate, the lower end of the valve rod is movably arranged in the stuffing box, the stuffing pressing plate is detachably and fixedly arranged on the upper end surface of the stuffing box and is used for pressing stuffing, and the stuffing box is fixed with the lower bottom plate, the lower base plate is provided with a first through hole corresponding to the hollow part of the stuffing box.
2. The stuffing sealing detection device according to claim 1, wherein a support plate is further disposed between the stuffing box and the lower bottom plate, a protruding sealing ring is integrally and fixedly disposed on a lower bottom surface of the stuffing box, a sealing groove corresponding to the sealing ring is disposed on an upper end surface of the support plate, a second through hole corresponding to the first through hole is disposed in a middle portion of the support plate, the stuffing box and the support plate are detachably and fixedly disposed, and the support plate and the lower bottom plate are fixed.
3. The stuffing tightness detection device according to claim 1, wherein the valve rod, the stuffing pressing plate and the stuffing box are coaxially arranged, an installation table is arranged in the middle of the outer side of the stuffing box, and the stuffing pressing plate is detachably fixed to the stuffing box through bolts.
4. The packing tightness detection device according to claim 1, wherein a packing pressing sleeve is fixedly arranged on a lower end surface of the packing pressing plate, and the packing pressing sleeve is coaxially arranged with the valve rod.
5. The packing tightness detecting device according to claim 1, wherein a pressure sensor is fixedly connected to the telescopic shaft of the driving assembly, and the upper end of the valve stem is fixed to the pressure sensor through a screw-connected adapter.
6. The packing tightness detecting device according to claim 1, further comprising a position detecting assembly for detecting a stroke of the valve stem, wherein the position detecting assembly includes a flapper fixed to the valve stem, and the packing box is fixedly provided with a displacement sensor for detecting a position of the flapper.
7. The packing tightness detecting device according to claim 1, wherein said driving assembly includes a hydraulic cylinder, said hydraulic cylinder is fixed to said upper base plate, and a telescopic shaft of said hydraulic cylinder is detachably fixed to said valve stem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922176575.XU CN210981685U (en) | 2019-12-06 | 2019-12-06 | Filler leakproofness detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922176575.XU CN210981685U (en) | 2019-12-06 | 2019-12-06 | Filler leakproofness detection device |
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| CN210981685U true CN210981685U (en) | 2020-07-10 |
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| CN201922176575.XU Active CN210981685U (en) | 2019-12-06 | 2019-12-06 | Filler leakproofness detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112254895A (en) * | 2020-09-08 | 2021-01-22 | 合肥通用机械研究院有限公司 | Performance test device and test method for packing sealing system for straight stroke valve rod |
-
2019
- 2019-12-06 CN CN201922176575.XU patent/CN210981685U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112254895A (en) * | 2020-09-08 | 2021-01-22 | 合肥通用机械研究院有限公司 | Performance test device and test method for packing sealing system for straight stroke valve rod |
| CN112254895B (en) * | 2020-09-08 | 2023-12-05 | 合肥通用机械研究院有限公司 | Performance test device and test method for packing sealing system for straight Cheng Fagan |
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