CN212748182U - Metal ring gasket sealing performance test device - Google Patents
Metal ring gasket sealing performance test device Download PDFInfo
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- CN212748182U CN212748182U CN202021934210.5U CN202021934210U CN212748182U CN 212748182 U CN212748182 U CN 212748182U CN 202021934210 U CN202021934210 U CN 202021934210U CN 212748182 U CN212748182 U CN 212748182U
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Abstract
The utility model provides a metal ring gasket sealing test device, which comprises a first flange, a second flange and a mandrel, wherein the first flange and the second flange are respectively sealed and buckled at one end of the mandrel and are connected by a first bolt in a folding way, and a gap is arranged between the middle outer side wall of the mandrel and the inner side wall of the first flange and the inner side wall of the second flange respectively; the metal ring gasket is arranged between the trapezoidal groove of the first flange and the trapezoidal groove of the second flange to form flange sealing surface sealing, and the inner side surface of the metal ring gasket seals a gap to form a pressure testing cavity; a medium channel is formed in the second flange, one end of the medium channel is communicated with the pressure testing cavity, and the other end of the medium channel is connected with a connector. Compared with the prior art, the utility model discloses the first flange that sets up passes through dabber location and centering and through first bolt to closing to be connected with the second flange, has avoided incline or dislocation, has guaranteed the accuracy of testing result.
Description
Technical Field
The utility model relates to a sealing performance detects technical field, concretely relates to metal ring pad leakproofness test device.
Background
The metal ring gasket is a solid metal gasket which is made of metal materials and has an octagonal or oval cross section, and has a radial self-tightening sealing effect. The sealing principle is that the back cushion sheet contacts with the inner and outer side surfaces (mainly the outer side surface) of the trapezoidal groove of the flange, and the metal ring cushion generates certain plastic deformation to realize sealing by means of the pressing force of the bolt and the flange.
The metal ring gasket is generally used on flanges of high-temperature and high-pressure pipelines, valves and equipment, and is particularly commonly applied in the petrochemical industry. The reliability of flange connection sealing is ensured to be a necessary condition for safe operation of the petrochemical device and reduction of environmental pollution. At present, the sealing performance of a metal ring gasket is detected by adopting actual flange connection, namely a test container is formed by connecting a pair of flanges, the metal ring gasket is arranged between flange sealing surfaces to form sealing, then a high-pressure medium is introduced into the test container, and the sealing performance of the metal ring gasket is judged by observing the medium leakage condition of the flange sealing surfaces after pressure maintaining for a period of time. However, due to the particularity of the sectional shape of the metal ring gasket, the requirement on the position precision of flange connection is high, and once the flange connection is deflected or dislocated, leakage can be caused, so that the detection result is inaccurate.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a metal ring pad leakproofness test device to prior art's not enough, the purpose of the utility model is to provide a skew appears in the flange joint or misplaces, causes the leakage among the solution prior art, leads to the unsafe problem of metal ring pad sealing performance testing result.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a metal ring gasket sealing performance test device, which comprises a first flange, a second flange and a mandrel, wherein the first flange and the second flange are respectively sealed and buckled at one end of the mandrel and are connected by a first bolt in a folding way, and a gap is arranged between the outer side wall of the middle part of the mandrel and the inner side wall of the first flange and the inner side wall of the second flange respectively; the metal ring gasket is arranged between the trapezoidal groove of the first flange and the trapezoidal groove of the second flange to form flange sealing surface sealing, and the inner side surface of the metal ring gasket seals a gap to form a pressure testing cavity; and a medium channel is formed in the second flange, one end of the medium channel is communicated with the pressure testing cavity, and the other end of the medium channel is connected with a joint.
Further, the outer side wall of one end of the mandrel is in sealing fit with the inner side wall of the first flange through a first sealing assembly, and the outer side wall of the other end of the mandrel is in sealing fit with the inner side wall of the second flange through a second sealing assembly.
Further, first seal assembly includes main sealing ring and seat circle, main sealing ring with the medial surface of seat circle respectively with dabber one end lateral wall seals up the cooperation, the lateral surface respectively with the sealed cooperation of first flange inside wall, the side is pressed on the seat circle main sealing ring is upper and lower side with locate the sealed cooperation of sloping platform of first flange inside wall.
Further, first seal assembly still includes the elasticity rand, the elasticity rand cup joints on dabber one end lateral wall and with the conflict of seat circle downside is connected.
Further, a first step is arranged on the inner side wall of the second flange, and a second step is arranged on the outer side wall of the other end of the mandrel; the second sealing assembly is arranged between the first step and the second step.
Furthermore, the second sealing assembly comprises an upper auxiliary sealing ring seat, an auxiliary sealing ring and a lower auxiliary sealing ring seat which are sequentially arranged, wherein the inner side surfaces of the upper auxiliary sealing ring seat, the lower auxiliary sealing ring seat and the upper auxiliary sealing ring seat are respectively in sealing fit with the outer side wall of the other end of the mandrel, and the outer side surface of the lower auxiliary sealing ring seat and the outer side wall of the mandrel are respectively in sealing fit with; the upper side face of the upper seat of the auxiliary sealing ring is connected with the first step in an abutting mode, and the lower side face of the lower seat of the auxiliary sealing ring is connected with the second step in an abutting mode.
Furthermore, the main sealing ring and the auxiliary sealing ring are both made of stainless steel.
Furthermore, a second bolt is connected to the middle of one end face of the mandrel, extends to the outside of the first flange and is fixedly connected with the end face of the first flange.
Further, the second bolt is a wire planting bolt.
Further, the first bolt is a stud bolt.
Compared with the prior art, the utility model provides a metal ring fills up leakproofness test device has following beneficial effect:
1. the arranged first flange and the second flange are positioned and centered through the mandrel and are connected in an involutory mode through the first bolt, so that deflection or dislocation is avoided, and the accuracy of a detection result is ensured;
2. through the arranged main sealing ring and the seat ring, a plurality of seals can be formed between the mandrel and the first flange, and the normal operation of the test can be effectively guaranteed;
3. through the arrangement of the upper seat of the auxiliary sealing ring, the auxiliary sealing ring and the lower seat of the auxiliary sealing ring, a plurality of seals can be formed between the mandrel and the second flange, and further effective guarantee is provided for normal test;
4. the mandrel is fixedly connected with the first flange through the second bolt, so that the mandrel can be effectively prevented from axially moving in the test process, and the accuracy of a detection result is further ensured;
5. the first bolt that sets up is stud, can effectively play locking purpose at experimental pressurization, pressurize and pressure release in-process, for the accuracy improvement guarantee of testing result, can both take out, convenient dismantlement and change from any one moreover.
Drawings
Fig. 1 is the structure diagram of the main view half-section of the utility model.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.
Referring to fig. 1, the utility model provides a metal ring gasket sealing test device, which comprises a first flange 1, a second flange 2 and a mandrel 3, wherein the first flange 1 and the second flange 2 are respectively sealed and buckled at one end of the mandrel 3 and are connected by a first bolt 4 in a folding manner, and a gap is arranged between the outer side wall of the middle part of the mandrel 3 and the inner side wall of the first flange 1 and the inner side wall of the second flange 2; the metal ring gasket 5 is arranged between the trapezoidal groove of the first flange 1 and the trapezoidal groove of the second flange 2 to form flange sealing surface seal, and the inner side surface of the metal ring gasket 5 seals a gap to form a pressure testing cavity; a medium channel 21 is formed in the second flange 2, one end of the medium channel 21 is communicated with the pressure testing cavity, and the other end of the medium channel is connected with a connector 6.
When the flange mounting device works, firstly, the mandrel 3 is used for axially positioning, centering and sealing the first flange 1 and the second flange 2, then the metal ring gasket 5 is placed between the trapezoidal groove of the first flange 1 and the trapezoidal groove of the second flange 2, and then the first flange 1 and the second flange 2 are connected in a matching mode through the first bolt 4, so that the mounting is completed; and finally, inputting a pressure test medium such as high-pressure water or kerosene and the like from the joint 6 to pressurize the pressure test chamber, testing according to WS-6A-22 API 6A product pressure test specification, respectively performing three tests under the working pressure of 105MPa, performing pressure relief after 3 minutes of pressure maintenance for the first time, performing pressure relief after 15 minutes of pressure maintenance for the second time, and performing pressure relief after 15 minutes of pressure maintenance for the third time, and then observing the leakage condition between the sealing surfaces of the flanges, wherein if no leakage exists, the sealing performance of the metal ring gasket 5 is good, otherwise, the sealing performance of the metal ring gasket 5 is poor. The first flange 1 and the second flange 2 are positioned and centered through the mandrel 3 and are connected in an involutory mode through the first bolt 4, so that deflection or dislocation is avoided, and the accuracy of a detection result is guaranteed.
Further, in this embodiment, as a preferred implementation structure, a second bolt 7 is connected to a middle portion of one end surface of the mandrel 3, and the second bolt 7 extends out of the first flange 1 and is fixedly connected with the end surface of the first flange 1. The dabber 3 that sets up passes through second bolt 7 and 1 fixed connection of first flange, can prevent effectively that dabber 3 from taking place the axial float in the testing process to further guarantee the accuracy of testing result. Specifically, the second bolt 7 is a silk-planting bolt.
Further, in this embodiment, as a preferable implementation structure, the first bolt 4 is a stud bolt. To the pressurization, pressurize and the pressure release in the test process, stud can effectively play locking purpose, for the accuracy improvement guarantee of testing result, can both take out, convenient dismantlement and change from any one moreover.
Further, in this embodiment, as a preferred implementation structure, the outer side wall of one end of the mandrel 3 is in sealing fit with the inner side wall of the first flange 1 through a first sealing assembly 8, and the outer side wall of the other end of the mandrel 3 is in sealing fit with the inner side wall of the second flange 2 through a second sealing assembly 9.
Further, in this embodiment, as a preferred implementation structure, the first sealing assembly 8 includes a main sealing ring 81 and a seat ring 82, inner side surfaces of the main sealing ring 81 and the seat ring 82 are respectively in sealing fit with an outer side wall of one end of the mandrel 3, outer side surfaces of the main sealing ring 81 and the seat ring 82 are respectively in sealing fit with an inner side wall of the first flange 1, and an upper side surface of the seat ring 82 presses against an upper side surface and a lower side surface of the main sealing ring 81 and is in sealing fit with a ramp arranged on the inner side wall of. Through the main sealing ring 81 and the seat ring 82, a plurality of seals can be formed between the mandrel 3 and the first flange 1, and the normal operation of the test can be effectively guaranteed.
Further, in this embodiment, as a preferred implementation structure, the first sealing assembly 8 further includes an elastic collar 83, and the elastic collar 83 is sleeved on an outer side wall of one end of the mandrel 3 and is in interference connection with an underside of the seat ring 82.
Further, in this embodiment, as a preferred implementation structure, the inner side wall of the second flange 2 is provided with a first step 22, and the outer side wall of the other end of the mandrel 3 is provided with a second step 31; the second seal assembly 9 is disposed between the first step 22 and the second step 31.
Further, in this embodiment, as a preferred implementation structure, the second sealing assembly 9 includes an upper secondary sealing ring seat 91, a lower secondary sealing ring seat 92, and a lower secondary sealing ring seat 93, which are sequentially disposed, and the inner side surfaces of which are respectively in sealing engagement with the outer side wall at the other end of the mandrel 3, and the outer side surfaces of which are respectively in sealing engagement with the inner side wall of the second flange 2; the upper side surface of the upper seat 91 of the auxiliary sealing ring is connected with the first step 22 in an abutting mode, and the lower side surface of the lower seat 93 of the auxiliary sealing ring is connected with the second step 31 in an abutting mode. Through the vice sealing ring upper seat 91, vice sealing ring 92 and vice sealing ring lower seat 93 that set up, can form the multichannel sealed between dabber 3 and second flange 2, further provide effective guarantee for experimental normal clear.
Further, in this embodiment, as a preferable embodiment, the primary seal ring 81 and the secondary seal ring 92 are both made of 304 stainless steel, and are high in strength, resistant to abrasion, and reusable.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.
Claims (10)
1. A metal ring gasket tightness test device is characterized by comprising a first flange, a second flange and a mandrel, wherein the first flange and the second flange are respectively and hermetically buckled at one end of the mandrel and are connected in an involutory manner through a first bolt; the metal ring gasket is arranged between the trapezoidal groove of the first flange and the trapezoidal groove of the second flange to form flange sealing surface sealing, and the inner side surface of the metal ring gasket seals a gap to form a pressure testing cavity; and a medium channel is formed in the second flange, one end of the medium channel is communicated with the pressure testing cavity, and the other end of the medium channel is connected with a joint.
2. The metal ring gasket tightness test device according to claim 1, wherein one end outer side wall of the mandrel is in sealing fit with the first flange inner side wall through a first sealing assembly, and the other end outer side wall of the mandrel is in sealing fit with the second flange inner side wall through a second sealing assembly.
3. The metal ring gasket tightness test device according to claim 2, wherein the first sealing assembly includes a main sealing ring and a seat ring, the inner side surfaces of the main sealing ring and the seat ring are respectively in sealing fit with the outer side wall of one end of the mandrel, the outer side surfaces of the main sealing ring and the seat ring are respectively in sealing fit with the inner side wall of the first flange, and the upper side surface of the seat ring presses the upper side surface and the lower side surface of the main sealing ring and is in sealing fit with a ramp arranged on the inner side wall of the first flange.
4. The metal ring gasket tightness test device according to claim 3, wherein said first sealing assembly further comprises an elastic collar sleeved on an outer side wall of one end of said mandrel and in interference connection with a lower side surface of said seat ring.
5. The metal ring gasket tightness test device according to claim 3 or 4, wherein the inner side wall of the second flange is provided with a first step, and the outer side wall of the other end of the mandrel is provided with a second step; the second sealing assembly is arranged between the first step and the second step.
6. The metal ring gasket tightness test device according to claim 5, wherein the second sealing assembly comprises an upper secondary sealing ring seat, a secondary sealing ring and a lower secondary sealing ring seat which are sequentially arranged, wherein the inner side surfaces of the upper secondary sealing ring seat, the secondary sealing ring seat and the lower secondary sealing ring seat are respectively in sealing fit with the outer side wall of the other end of the mandrel, and the outer side surfaces of the upper secondary sealing ring seat, the secondary sealing ring seat and the lower secondary sealing ring seat are respectively in sealing fit; the upper side face of the upper seat of the auxiliary sealing ring is connected with the first step in an abutting mode, and the lower side face of the lower seat of the auxiliary sealing ring is connected with the second step in an abutting mode.
7. The metal ring gasket tightness test device according to claim 6, wherein the primary seal ring and the secondary seal ring are made of stainless steel.
8. The metal ring gasket tightness test device according to claim 6 or 7, wherein a second bolt is connected to the middle of one end face of the mandrel, extends out of the first flange and is fixedly connected with the end face of the first flange.
9. The apparatus of claim 8, wherein the second bolt is a wire-cut bolt.
10. The apparatus of claim 9, wherein the first bolt is a stud bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021934210.5U CN212748182U (en) | 2020-09-07 | 2020-09-07 | Metal ring gasket sealing performance test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021934210.5U CN212748182U (en) | 2020-09-07 | 2020-09-07 | Metal ring gasket sealing performance test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212748182U true CN212748182U (en) | 2021-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021934210.5U Active CN212748182U (en) | 2020-09-07 | 2020-09-07 | Metal ring gasket sealing performance test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212748182U (en) |
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2020
- 2020-09-07 CN CN202021934210.5U patent/CN212748182U/en active Active
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