CN111089710A - Tubular part structural strength hydrostatic test device - Google Patents
Tubular part structural strength hydrostatic test device Download PDFInfo
- Publication number
- CN111089710A CN111089710A CN201911164891.3A CN201911164891A CN111089710A CN 111089710 A CN111089710 A CN 111089710A CN 201911164891 A CN201911164891 A CN 201911164891A CN 111089710 A CN111089710 A CN 111089710A
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- China
- Prior art keywords
- mandrel
- air release
- structural strength
- sleeve
- base
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
Abstract
The invention discloses a hydrostatic test device for structural strength of a cylindrical part, which comprises a base, a flange plate, a mandrel, an upper cover, an air release plug screw and a sealing ring, wherein the flange plate is arranged on the base; the flange plate is fixed on the surface of the base, one end of the mandrel penetrates through a central hole of the base and is fixed after being limited by the step, the supporting sleeve and the bottom plate of the flange plate respectively, the sleeve is connected with the mandrel, and the sleeve introduces working liquid into the mandrel; the upper cover is in threaded fit with the other end of the mandrel, and the steps at the two ends of the mandrel are sleeved with radial sealing rings which are respectively contacted with the end faces of the flange plate and the upper cover; the air release screw plug is arranged above the upper cover, and the screw plug is closed after air release is finished; the workpiece is sleeved outside the mandrel, the inner surface of the workpiece is in contact with the radial sealing ring on the mandrel, and the mandrel is filled with working liquid and then pressurized to enable the radial sealing ring to deform, so that the inside and the outside of the workpiece are sealed. The invention can realize uniform and stable pressure application on the workpiece, and has intuitive observation and simple and convenient operation.
Description
Technical Field
The invention relates to a hydrostatic test device, in particular to a test device for the structural strength of a cylindrical part.
Background
The bonding part of tube-shape need carry out water pressure strength test and bursting test and inspect the bonding quality, especially by bonding piece or the winding piece that different materials are constituteed, and traditional strength test device is usually through annotating water pressurization to the part and testing, and the in-process of water injection can unavoidable production bubble, and the bubble produces the ulcerate after the pressurization and can cause the local pressure change, consequently can't solve the problem of evenly exerting pressure to this type of part.
Disclosure of Invention
In view of this, the invention provides a hydrostatic test device for structural strength of a cylindrical part, which can uniformly and stably apply pressure to a workpiece, and is intuitive to observe and simple and convenient to operate.
The device for testing the structural strength of the cylindrical part by using the hydraulic pressure comprises a base, a flange plate, a mandrel, an upper cover, an air release plug screw and a radial sealing ring;
the flange plate is fixed on the surface of the base, one end of the mandrel penetrates through a central hole of the base and then is respectively limited and fixed with the supporting sleeve and the bottom plate of the flange plate by a step, the sleeve is connected with the mandrel, and the sleeve introduces working liquid into the mandrel; the upper cover is in threaded fit with the other end of the mandrel, and the steps at the two ends of the mandrel are sleeved with radial sealing rings which are respectively contacted with the end faces of the flange plate and the upper cover; the air release screw plug is arranged above the upper cover, and the screw plug is closed after air release is finished; the workpiece is sleeved outside the mandrel, the inner surface of the workpiece is in contact with the radial sealing ring on the mandrel, and the mandrel is filled with working liquid and then pressurized to enable the radial sealing ring to deform, so that the inside and the outside of the workpiece are sealed.
Further, the base has a central hole therein.
Furthermore, the flange plate consists of a bottom plate and a supporting sleeve, wherein the bottom plate is provided with a central hole which is concentric with the supporting sleeve.
Furthermore, the mandrel is provided with a central through hole, two ends of the mandrel are both of a two-stage step structure, threads are arranged on the inner circle and the outer circle of one end, the other end is an external thread, radial through holes are machined in the mandrel, and the radial through holes are evenly distributed along the axial direction and the circumferential direction of the mandrel.
Furthermore, a buffer sealing gasket is sleeved at the bottom of the supporting sleeve of the flange plate.
Furthermore, the mandrel is fixed with the flange plate through a round nut, a gasket is arranged between the contact surfaces of the mandrel and the flange plate, and a copper gasket is arranged between the round nut and the flange plate.
Further, the one end of gassing plug screw is the operation end of annular knurl, and the other end is the gassing end, has the external screw thread to connect on the surface of gassing end, and the front end of gassing end is conical structure, realizes two functions of gassing and shutoff through the cooperation length of screw thread.
Furthermore, both ends of the sleeve are threaded connection sections, and the middle part of the sleeve is of a limiting disc structure.
Has the advantages that:
1. according to the invention, air bubbles and redundant air in the working liquid can be discharged by using the air-release screw plug, no redundant air bubbles exist in the working cavity, uniform pressure application on a workpiece is realized, radial sealing on parts is realized by tensioning the sealing ring in the pressure application process, the sealing structure and the number of parts are simplified, the structure is simple, and the operation is convenient.
2. According to the invention, the buffer sealing gasket is sleeved at the bottom of the supporting sleeve of the flange plate, the buffer sealing gasket plays roles in buffering and sealing failure protection during installation of a workpiece, and once radial sealing fails, axial sealing can be carried out through the buffer sealing gasket, so that the sealing margin of the device is enhanced.
Drawings
FIG. 1 is a schematic structural diagram of a hydrostatic testing device for structural strength of a cylindrical part;
FIG. 2 is a schematic view of a mandrel configuration;
FIG. 3 is a schematic view of the structure of the upper cover;
FIG. 4 is a schematic view of the flange;
FIG. 5 is a schematic view of a bleeder plug construction;
fig. 6 is a schematic structural view of the sleeve.
The sealing device comprises a support 1, a base 2, a flange 3, a screw rod 4, a buffer sealing gasket 5, a mandrel 6, a radial sealing ring 7, an upper cover 8, a gas-releasing screw plug 9, a knob component 10, a gasket 11, a copper gasket 12, a round nut 13, an O-shaped sealing ring 14, a sleeve 15 and a nut 16.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
As shown in the attached figure 1, the invention provides a hydraulic test device for the structural strength of a cylindrical part, which comprises a base 2, a flange plate 3, a mandrel 6, an upper cover 8, an air release plug screw 9 and a radial sealing ring 7;
wherein, base 2 is supported by pillar 1, has a centre bore on the base 2, and ring flange 3 passes through screw rod and nut fixed connection on base 2, and the bottom of dabber 6 is fixed on ring flange 3 through round nut 13. A gasket 11 is arranged between the contact surfaces of the mandrel 6 and the flange plate 3, and a copper gasket 12 is arranged between the round nut 13 and the flange plate. The upper cover 8 is connected with the upper end of the mandrel in a threaded fit manner, and the steps at the two ends of the mandrel are sleeved with radial sealing rings which are respectively contacted with the flange 3 and the end face of the upper cover; the air release screw plug is arranged above the upper cover, and the screw plug is closed after air release is finished; the workpiece is sleeved outside the mandrel, the inner surface of the workpiece is in contact with a radial sealing ring 7 on the mandrel, the mandrel is filled with working liquid and then pressurized to enable the radial sealing ring to deform, sealing of the inner part and the outer part of the workpiece is achieved, and a buffer sealing gasket 5 is sleeved at the bottom of a supporting sleeve of the flange plate 3.
As shown in fig. 4, the flange 4 is composed of a bottom plate and a supporting sleeve, and the bottom plate is provided with a central hole which is concentric with the supporting sleeve.
As shown in fig. 2, the mandrel 6 has a central through hole, both ends of the mandrel are of a multi-step structure, the inner circle and the outer circle at one end are provided with threads, the other end is provided with external threads, and the mandrel is provided with radial through holes which are uniformly distributed along the axial direction and the circumferential direction of the mandrel.
As shown in fig. 3, the upper cover 8 has a threaded hole for engaging with the spindle, and a bleeder bolt mounting seat that is in communication with the threaded hole.
As shown in figure 5, one end of the air release screw plug 9 is a knurled operation end, the other end of the air release screw plug is an air release end, external threads are arranged on the surface of the air release end for connection, the front end of the air release end is of a conical structure, and two functions of air release and blocking are realized through the matching length of the threads.
As shown in fig. 6, both ends of the sleeve 15 are threaded connection sections, and the middle part is a limiting disc structure.
During working, a workpiece and the device are assembled at first, the workpiece is in good contact with the radial sealing ring on the mandrel, the air-release screw plug is opened, the hydraulic pump is started, working fluid is injected into the inner cavity of the workpiece through the small hole on the mandrel after the valve is opened, the air-release screw plug is closed after air is exhausted, then the inner cavity of the workpiece is uniformly pressed, in the pressing process, radial sealing inside the workpiece is radially sealed after the radial sealing ring is tensioned, required test pressure and pressure maintaining time can be set through connecting a pressure gauge and an electrical control element, a strength test is carried out, and if the pressure is continuously applied until the workpiece is damaged, the blasting test can be realized.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The device for testing the structural strength of the cylindrical part is characterized by comprising a base, a flange plate, a mandrel, an upper cover, an air release plug screw and a radial sealing ring;
the flange plate is fixed on the surface of the base, one end of the mandrel penetrates through a central hole of the base and then is respectively limited and fixed with the supporting sleeve and the bottom plate of the flange plate by a step, the sleeve is connected with the mandrel, and the sleeve introduces working liquid into the mandrel; the upper cover is in threaded fit with the other end of the mandrel, and the steps at the two ends of the mandrel are sleeved with radial sealing rings which are respectively contacted with the end faces of the flange plate and the upper cover; the air release screw plug is arranged above the upper cover, and the screw plug is closed after air release is finished; the workpiece is sleeved outside the mandrel, the inner surface of the workpiece is in contact with the radial sealing ring on the mandrel, and the mandrel is filled with working liquid and then pressurized to enable the radial sealing ring to deform, so that the inside and the outside of the workpiece are sealed.
2. The apparatus for hydrostatic testing of structural strength of tubular members of claim 1, wherein said base has a central opening therein.
3. The apparatus for hydrostatic testing of structural strength of tubular parts according to claim 1 or 2, wherein the flange is formed by a base plate and a support sleeve, the base plate having a central hole concentric with the support sleeve.
4. The device for testing the structural strength of the cylindrical part according to claim 3, wherein the mandrel is provided with a central through hole, both ends of the mandrel are of a two-step structure, the inner circle and the outer circle at one end are provided with threads, the other end is provided with external threads, and the mandrel is provided with radial through holes which are uniformly distributed along the axial direction and the circumferential direction of the mandrel.
5. The device for testing the structural strength of the cylindrical part according to claim 4, wherein a cushion gasket is sleeved at the bottom of the supporting sleeve of the flange.
6. The apparatus for testing structural strength of a cylindrical part according to claim 5, wherein the mandrel is fixed to the flange by a round nut, a gasket is arranged between the contact surfaces of the mandrel and the flange, and a copper gasket is arranged between the round nut and the flange.
7. The hydrostatic test device for the structural strength of the cylindrical part, as recited in claim 6, wherein one end of the air release plug is a knurled operating end, the other end is an air release end, the surface of the air release end is provided with external threads for connection, the front end of the air release end is a conical structure, and two functions of air release and blocking are realized through the matching length of the threads.
8. The device for testing the structural strength of the cylindrical part according to claim 7, wherein both ends of the sleeve are threaded connection sections, and the middle part of the sleeve is of a limiting disc structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911164891.3A CN111089710A (en) | 2019-11-25 | 2019-11-25 | Tubular part structural strength hydrostatic test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911164891.3A CN111089710A (en) | 2019-11-25 | 2019-11-25 | Tubular part structural strength hydrostatic test device |
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| Publication Number | Publication Date |
|---|---|
| CN111089710A true CN111089710A (en) | 2020-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911164891.3A Pending CN111089710A (en) | 2019-11-25 | 2019-11-25 | Tubular part structural strength hydrostatic test device |
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| Country | Link |
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| CN (1) | CN111089710A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763309A (en) * | 2021-01-18 | 2021-05-07 | 江南工业集团有限公司 | Thin-wall circular pipe hydraulic test device and test method |
| CN112858021A (en) * | 2021-01-18 | 2021-05-28 | 江南工业集团有限公司 | Mouth threaded container pressure test device and test method |
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| CN200993626Y (en) * | 2006-09-28 | 2007-12-19 | 新疆屯河节水科技有限公司 | Pipe sample hydraulic experiment mounting device |
| KR101158401B1 (en) * | 2011-04-19 | 2012-06-25 | 서광기연 주식회사 | Hydraulic pressure test machine for pipes |
| CN205209872U (en) * | 2015-10-22 | 2016-05-04 | 北京北机机电工业有限责任公司 | Hydrostatic test anchor clamps |
| CN107560795A (en) * | 2017-07-24 | 2018-01-09 | 北京北机机电工业有限责任公司 | Cylinder sealing property detection device |
| CN209264214U (en) * | 2018-10-12 | 2019-08-16 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | It is a kind of for testing the test tool of packing element performance |
| CN209432674U (en) * | 2018-11-27 | 2019-09-24 | 中国石油化工股份有限公司 | A kind of test device of packing element |
-
2019
- 2019-11-25 CN CN201911164891.3A patent/CN111089710A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200993626Y (en) * | 2006-09-28 | 2007-12-19 | 新疆屯河节水科技有限公司 | Pipe sample hydraulic experiment mounting device |
| KR101158401B1 (en) * | 2011-04-19 | 2012-06-25 | 서광기연 주식회사 | Hydraulic pressure test machine for pipes |
| CN205209872U (en) * | 2015-10-22 | 2016-05-04 | 北京北机机电工业有限责任公司 | Hydrostatic test anchor clamps |
| CN107560795A (en) * | 2017-07-24 | 2018-01-09 | 北京北机机电工业有限责任公司 | Cylinder sealing property detection device |
| CN209264214U (en) * | 2018-10-12 | 2019-08-16 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | It is a kind of for testing the test tool of packing element performance |
| CN209432674U (en) * | 2018-11-27 | 2019-09-24 | 中国石油化工股份有限公司 | A kind of test device of packing element |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763309A (en) * | 2021-01-18 | 2021-05-07 | 江南工业集团有限公司 | Thin-wall circular pipe hydraulic test device and test method |
| CN112858021A (en) * | 2021-01-18 | 2021-05-28 | 江南工业集团有限公司 | Mouth threaded container pressure test device and test method |
| CN112763309B (en) * | 2021-01-18 | 2022-09-20 | 江南工业集团有限公司 | Thin-wall circular pipe hydraulic test device and test method |
| CN112858021B (en) * | 2021-01-18 | 2023-12-08 | 江南工业集团有限公司 | Pressure test device and method for threaded container at mouth |
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Application publication date: 20200501 |
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