CN219303343U - Atmospheric pressure test sealing device for atmospheric connection pipe - Google Patents
Atmospheric pressure test sealing device for atmospheric connection pipe Download PDFInfo
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- CN219303343U CN219303343U CN202223538036.4U CN202223538036U CN219303343U CN 219303343 U CN219303343 U CN 219303343U CN 202223538036 U CN202223538036 U CN 202223538036U CN 219303343 U CN219303343 U CN 219303343U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model provides a sealing device for atmospheric pressure test of an atmospheric connection pipe, and relates to the technical field of nuclear power connection pipe pressure test. The atmospheric pressure test sealing device comprises a test gland, a rib plate, a sealing plate, an air bag and an air charging pipeline communicated with the air bag, wherein the air charging pipeline is arranged on the sealing plate, the sealing plate is arranged opposite to the test gland and is connected with the test gland through the rib plate, the air bag is arranged at one end of the sealing plate facing the test gland and is used for being elastically and hermetically connected with the inner wall of the large connecting pipe, the test gland is used for extending into the large connecting pipe and is hermetically connected with an annular table in the large connecting pipe, and the sealing plate is used for being connected with the pipe end of the large connecting pipe. After the sealing connection between the test gland and the annular table and the elastic sealing of the air bag and the inner wall of the large connecting pipe, a secondary seal is formed at the pipe orifice of the large connecting pipe, so that the sealing requirement of the container field pressure test can be realized on the construction site, the connecting pipe allowance of the large connecting pipe is not required to be reserved, and the problem that the influence of field construction on the container pressure test of the large connecting pipe is reduced.
Description
Technical Field
The utility model relates to the technical field of nuclear power adapter tube pressure test, in particular to an atmospheric adapter tube pressure test sealing device.
Background
Along with the update of domestic nuclear power products, a fourth generation nuclear reactor represented by a fast reactor becomes a national key development object. The sodium-cooled fast reactor adopts an all-stainless steel container, and takes metallic sodium as a cooling medium to carry out the circulating cooling of the reactor. Unlike the pressurized water reactor container, the main container of the sodium-cooled fast reactor is designed with 10 large-diameter connecting pipes with the diameter of 1-2.5 m, and the container needs to be sealed during the pressure test and helium leak detection.
At present, the diameter of a pressurized water reactor pressure vessel connecting pipe is less than 1 meter, a welding head mode is adopted for sealing during a vessel pressure test, and a machine tool cuts off the head and welding allowance after the vessel pressure test. The sodium-cooled fast reactor container is designed to have a diameter of about 16 meters, and cannot be completely manufactured in a factory due to the fact that the equipment is oversized and overweight, and construction can only be carried out in a field welding mode. However, when the connecting pipe is sealed by adopting a welding end socket mode, the end socket needs to be cut off on site, high requirements are imposed on equipment and site construction, and risks are multiplied.
Disclosure of Invention
The utility model solves the problems that: how to reduce the requirement of site construction when the pressure test of the site container is carried out.
In order to solve the problems, the utility model provides an atmospheric pressure test sealing device which comprises a test cover, a rib plate, a sealing plate, an air bag and an air charging pipeline communicated with the air bag, wherein the air charging pipeline is arranged on the sealing plate, the sealing plate is opposite to the test cover and is connected with the test cover through the rib plate, the air bag is arranged at one end of the sealing plate facing the test cover and is used for being elastically and hermetically connected with the inner wall of a large connecting pipe, the test cover is used for extending into the large connecting pipe and being hermetically connected with an annular table in the large connecting pipe, and the sealing plate is used for being connected with the pipe end of the large connecting pipe.
Optionally, an annular gap is formed in the pressure test cover, and the annular gap is used for being matched with the annular table in a sealing mode.
Optionally, a sealing rubber plate is arranged on the annular gap, and the rubber sealing plate is used for being in sealing connection with the annular table.
Optionally, a bolt is arranged on the sealing plate, and the sealing plate is in threaded connection with the pipe end of the large connecting pipe through the bolt.
Optionally, a plurality of bolts are arranged at equal intervals.
Optionally, an annular groove is arranged on the sealing plate, and the annular groove is used for being spliced with the pipe end of the large connecting pipe.
Optionally, a sealing groove is arranged at one end of the sealing plate, which faces the test gland, a notch of the sealing groove is arranged towards the side wall of the large connecting pipe, and the air bag is arranged in the sealing groove.
Optionally, a plurality of rib plates are provided, and a plurality of rib plates are equidistantly arranged between the test gland and the sealing plate.
Optionally, an air inlet valve body and an air outlet valve body are arranged on the air charging pipeline.
Optionally, the sealing rubber plate is of an annular structure, and a screenshot graph of the sealing rubber plate in the annular direction is of a rectangular shape.
Compared with the prior art, the atmospheric pressure test sealing device for the large connecting pipe is arranged on the sealing plate through the air charging pipeline and is communicated with the air bag, so that the expansion or contraction of the air bag is realized, the sealing plate is arranged opposite to the pressure test cover and is connected with the pressure test cover through the rib plate, the sealing plate and the pressure test cover can form an integral structure under the support of the rib plate to keep the stability of the sealing plate, so that the air bag on the sealing plate can keep stable, the pressure test cover can be pressed on the annular table through the rib plate after the sealing plate is connected with the pipe end of the large connecting pipe, the sealing connection between the pressure test cover and the annular table is realized, and the expansion of the air bag under the action of the air charging pipeline is realized, so that secondary sealing is formed at the pipe opening of the large connecting pipe after the air bag and the inner wall of the large connecting pipe are elastically sealed, and in this way, the head cutting procedure can be avoided when the container pressure test is carried out on site, so that the connecting pipe allowance of the large connecting pipe is not required to be reserved, and the requirement of site construction is reduced.
Drawings
FIG. 1 is a schematic diagram of a seal device for atmospheric pressure test in an embodiment of the present utility model;
FIG. 2 is a schematic diagram II of a sealing device for atmospheric pressure test in an embodiment of the present utility model;
FIG. 3 is a schematic view of a seal plate according to an embodiment of the present utility model;
fig. 4 is a schematic structural view of a sealing rubber plate according to an embodiment of the present utility model.
Reference numerals illustrate:
1-a test gland; 11-an annular gap; 111-sealing a rubber plate; 2-rib plates; 3-sealing plate; 31-bolts; 32-an annular groove; 33-sealing the groove; 4-an air bag; 5-an inflation line; 51-an air inlet valve body; 50-an air release valve body; 10-large connecting pipe; 20-annular table.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the description of the present specification, descriptions of the terms "embodiment," "one embodiment," "some embodiments," "illustratively," and "one embodiment" and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or embodiment is included in at least one embodiment or implementation of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same examples or implementations. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or implementations.
The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. As such, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
The Z-axis in the drawing represents vertical, i.e., up-down position, and the positive direction of the Z-axis (i.e., the arrow of the Z-axis points) represents up, and the negative direction of the Z-axis (i.e., the direction opposite to the positive direction of the Z-axis) represents down; the X-axis in the drawing indicates a horizontal direction and is designated as a left-right position, and the positive direction of the X-axis (i.e., the arrow of the X-axis is directed) indicates a left side and the negative direction of the X-axis (i.e., the direction opposite to the positive direction of the X-axis) indicates a right side; the Y-axis in the drawing indicates the front-back position, and the positive direction of the Y-axis (i.e., the arrow of the Y-axis is directed) indicates the front side, and the negative direction of the Y-axis (i.e., the direction opposite to the positive direction of the Y-axis) indicates the rear side; it should also be noted that the foregoing Z-axis, Y-axis, and X-axis are meant to be illustrative only and not indicative or implying that the apparatus or component in question must be oriented, configured or operated in a particular orientation, and therefore should not be construed as limiting the utility model.
Referring to fig. 1 and 2, an embodiment of the present utility model provides an atmospheric pressure test sealing device, which includes a test cover 1, a rib plate 2, a sealing plate 3, an air bag 4, and an air inflation pipe 5 communicating with the air bag 4, wherein the air inflation pipe 5 is disposed on the sealing plate 3, the sealing plate 3 is disposed opposite to the test cover 1 and is connected with the test cover 1 through the rib plate 2, the air bag 4 is disposed at one end of the sealing plate 3 facing the test cover 1 and is used for elastic sealing connection with an inner wall of a large adapter 10, the test cover 1 is used for extending into the large adapter 10 and sealing connection with an annular table 20 in the large adapter 10, and the sealing plate 3 is used for connecting with a pipe end of the large adapter 10.
Specifically, the sealing plate 3 and the pressure testing cover 1 are both of circular plate structures, the diameter of the sealing plate 3 is matched with the outer diameter of the large connecting pipe 10, and the diameter of the pressure testing cover 1 is matched with the radial size of the annular table 20 in the large connecting pipe 10. The closing plate 3 is located the top of test lid 1, and gusset 2 is located between closing plate 3 and the test lid 1, and the upper and lower both ends of gusset 2 are connected with closing plate 3 and test lid 1 respectively, and gasbag 4 is installed at the lower extreme of closing plate 3 to with inflation line 5 intercommunication, inflation line 5 sets up on closing plate 3 and can communicate with the air supply, in order to aerify gasbag 4. During pressure test, the pressure test cover 1 stretches into the large connecting pipe 1 and is in sealing connection with the upper end of the annular table 20, the sealing plate 3 is detachably connected with the pipe end of the large connecting pipe 10 through the existing means, after the sealing plate 3 is connected with the large connecting pipe 10, the air inflation pipeline 5 inflates the air bag 4, the air bag 4 expands in the large connecting pipe 10 under the action of internal pressure and is in elastic sealing connection with the inner wall of the large connecting pipe 10, the sealing of the large connecting pipe 10 is realized under the action of the pressure test cover 1 and the air bag 4, and when the pressure test is finished, the air inflation pipeline 5 discharges air in the air bag 4. Further, the large connecting pipe 10 is often provided with an expansion joint to meet the requirement of thermal stress deformation, so that the air bag 4 can automatically adjust and compensate according to the length and the short axis of the expansion joint, and realize the expansion contact radial sealing function.
In this embodiment, the inflation pipeline 5 is arranged on the sealing plate 3 and is communicated with the air bag 4 to realize expansion or contraction of the air bag 4, and the sealing plate 3 is arranged opposite to the test gland 1 and is connected with the test gland 1 through the rib plate 2, so that the sealing plate 3 and the test gland 1 can form an integral structure under the support of the rib plate 2 to keep the stability of the sealing plate, the air bag 4 on the sealing plate 3 can be kept stable, and further after the sealing plate 3 is connected with the pipe end of the large connecting pipe 10, the test gland 1 can be propped against the annular table 20 through the rib plate 2 to realize sealing connection between the test gland 1 and the annular table 20, and then the air bag 4 is expanded under the action of the inflation pipeline 5 to realize gap compensation, so that after the air bag 4 is elastically sealed with the inner wall of the large connecting pipe 10, a secondary seal is formed at the pipe opening of the large connecting pipe 10, thus, during a vessel pressure test, a head cutting procedure can be avoided, the connecting pipe allowance of the large connecting pipe 10 is not required to be reserved, and the requirements of site construction are reduced.
The sealing requirement of the container field pressure test can be met at the construction site, the connection tube allowance of the large connection tube 10 is not required to be reserved, the period of field processing and welding of the large connection tube 10 is avoided, the production efficiency is greatly improved, and the problem that the container pressure test is influenced by field construction on the large connection tube 10 is reduced.
Optionally, as shown in connection with fig. 4, the test gland 1 is provided with an annular gap 11, the annular gap 11 being adapted for sealing engagement with an annular land 20.
Specifically, the annular notch 11 is provided at the edge of the lower end of the pressure test cover 11.
Thus, the annular gap 11 is arranged on the pressure testing cover 1 and is in sealing connection with the annular table 20, so that after the pressure testing cover 1 is in sealing connection with the annular table 2, the contact area between the pressure testing cover 1 and the annular table 20 is increased by the annular gap 11, and the sealing effect of the pressure testing cover 1 on the annular table 20 is further improved.
Optionally, as shown in connection with fig. 4, the annular gap 11 is provided with a sealing rubber plate 111, and the rubber sealing plate 3 is used for sealing connection with the annular table 20.
Specifically, the sealing rubber plate 111 has an annular structure, the sealing rubber plate 111 is placed in the annular gap 11, and the annular gap 11 is in sealing connection with the annular table 20.
In this way, the sealing rubber plate 111 is disposed in the annular gap 11 and is in sealing connection with the annular table 20, and the sealing effect between the test gland 1 and the annular table 20 can be further improved through the elastic deformation of the sealing rubber plate 111.
Alternatively, as shown in connection with fig. 2, a bolt 31 is provided on the sealing plate 3, and the sealing plate 3 is screwed to the pipe end of the large adapter 10 by the bolt 31.
Specifically, the edge of the sealing plate 3 is provided with a mounting hole, and the bolt 31 penetrates through the mounting hole and is connected with the pipe section of the large connecting pipe 10 through a bolt.
In this way, the threaded connection between the sealing plate 3 and the pipe end of the large connecting pipe 10 is realized through the bolt 31, so that the pressure testing cover 1 is gradually compressed in the process of screwing the bolt 31 into the pipe end of the large connecting pipe 10, the sealing effect of the pressure testing cover 1 on the annular table 20 is improved, and the self-locking property of the connection between the sealing plate 3 and the large connecting pipe 10 can be improved through the threaded connection between the bolt 31 and the pipe end of the large connecting pipe 10 during pressure testing, and the connection strength of the sealing plate 3 and the large connecting pipe 10 is further improved, so that the stability of the pressure testing process is improved.
Alternatively, as shown in connection with fig. 2, a plurality of bolts 31 are provided at equal intervals.
Specifically, the plurality of bolts 31 are equally spaced in the circumferential direction of the sealing plate 3, so that the load to which any one of the bolts 31 is subjected is the same, thereby improving the connection stability of the sealing plate 3 with the pipe end of the large adapter 10.
Optionally, as shown in connection with fig. 3, the sealing plate 3 is provided with an annular groove 32, the annular groove 32 being intended for engagement with the pipe end of the large adapter 10.
Specifically, an annular groove 33 is provided at the lower end of the sealing plate 3, and after the pipe section of the large adapter 10 is inserted into the annular groove 32, the bolt 31 is connected with the pipe end of the large adapter 10.
In this way, the annular groove 32 on the sealing plate 3 is inserted into the pipe end of the large connecting pipe 10, and the annular groove 32 realizes the installation and positioning between the sealing plate 3 and the pipe end of the large connecting pipe 10 so as to keep the sealing plate 3 stable at the pipe orifice of the large connecting pipe 10, thereby facilitating the connection between the subsequent bolt 31 and the large connecting pipe 10.
Alternatively, as shown in conjunction with fig. 1 and 3, the sealing plate 3 is provided with a sealing groove 33 at one end toward the test gland 1, the notch of the sealing groove 33 is provided toward the side wall of the large adapter 10, and the air bag 4 is provided in the sealing groove 33.
Specifically, the sealing plate 3 is provided with a sealing groove 33 at one end facing the test gland 1, that is, the sealing groove 33 is in the shape of a circular ring, the sealing groove 33 is provided at the lower end of the sealing plate 3 and at the edge of the sealing plate 3, and the airbag 4 is placed in the sealing groove 33. After the airbag 4 is inflated, the airbag 4 expands in the sealing groove 33 towards the side wall at the pipe orifice of the large connecting pipe 10, so that the airbag 4 and the side wall at the pipe orifice of the large connecting pipe 10 are elastically sealed.
In this way, the sealing groove 33 is arranged at one end of the sealing plate 3, which faces the test gland 1, and the air bag 4 is arranged in the sealing groove 33, so that the air bag 4 can be supported by the sealing groove 33 before expansion or after retraction, the stability of the air bag 4 on the sealing plate 2 is kept, the notch of the sealing groove 33 is arranged towards the side wall of the large connecting pipe 10, the air bag 4 is expanded from the notch of the sealing groove 33 to the side wall of the pipe orifice of the large connecting pipe 10, and in this way, the sealing groove 33 can realize the expansion direction guide of the air bag 4, and the expansion stability of the air bag 4 is improved.
Alternatively, as shown in connection with fig. 2, a plurality of rib plates 2 are provided, and a plurality of rib plates 2 are provided between the pressure test cover 1 and the sealing plate 3 at equal intervals.
Specifically, the plurality of rib plates 2 are distributed at equal intervals in the circumferential direction of the sealing plate 2, and the upper and lower ends of any one rib plate 2 are respectively connected with the sealing plate 2 and the test gland 1 by welding.
In this way, the rib plates 2 are arranged between the pressure testing cover 1 and the sealing plate 3 at equal intervals, and the rib plates 2 form multi-point support between the pressure testing cover 1 and the sealing plate 3, so that the connection stability of the pressure testing cover 1 and the sealing plate 3 can be improved.
Optionally, as shown in connection with fig. 2, the charging line 5 is provided with an intake valve body 51 and a release valve body 52.
Specifically, when the airbag 4 is required to elastically seal the side wall of the pipe orifice of the large pipe 10, the air inlet valve body 51 is opened, the air release valve body 52 is closed, and after the airbag 4 is inflated, the air inlet valve body 51 is closed; when the test is completed, the air release valve 52 is opened, and the air in the air bag 4 is discharged.
In this way, by providing the air intake valve body 51 and the air release valve body 52 on the air charging pipe 5, the expansion and contraction of the air bag 4 can be effectively controlled by the opening or closing of the air intake valve body 51 or the air release valve body 52.
Alternatively, as shown in fig. 4, the sealing rubber plate 111 has an annular structure, and the sectional view of the sealing rubber plate 111 in the annular direction thereof has a rectangular shape, so as to increase the contact area between the sealing rubber plate 111 and the annular table 20, thereby further improving the sealing effect of the sealing rubber plate 111 on the annular table 20.
Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the utility model.
Claims (10)
1. The utility model provides an atmospheric pressure test sealing device, its characterized in that, including test gland (1), gusset (2), closing plate (3), gasbag (4) and with inflation line (5) of gasbag (4) intercommunication, inflation line (5) set up on closing plate (3), closing plate (3) with test gland (1) set up relatively and pass through gusset (2) with test gland (1) are connected, gasbag (4) set up closing plate (3) orientation one end of test gland (1) to be used for with the inner wall elastic sealing connection of big takeover (10), test gland (1) be used for stretching into in the big takeover (10) and with annular table (20) sealing connection in the big takeover (10), closing plate (3) be used for with the pipe end connection of big takeover (10).
2. Atmospheric pressure test sealing device according to claim 1, characterized in that the pressure test cover (1) is provided with an annular gap (11), the annular gap (11) being adapted to be in sealing engagement with the annular table (20).
3. The atmospheric pressure test sealing device according to claim 2, wherein the annular gap (11) is provided with a sealing rubber plate (111), and the sealing rubber plate (111) is used for being in sealing connection with the annular table (20).
4. Atmospheric pressure test sealing device according to claim 1, characterized in that the sealing plate (3) is provided with a bolt (31), and the sealing plate (3) is screwed with the pipe end of the large pipe (10) by the bolt (31).
5. The atmospheric pressure test sealing device according to claim 4, wherein a plurality of bolts (31) are provided at equal intervals.
6. Atmospheric pressure test sealing device according to claim 1, characterized in that the sealing plate (3) is provided with an annular groove (32), which annular groove (32) is intended to be plugged into the pipe end of the large pipe (10).
7. Atmospheric pressure test sealing device according to claim 1, characterized in that one end of the sealing plate (3) facing the pressure test cover (1) is provided with a sealing groove (33), the notch of the sealing groove (33) is arranged facing the side wall of the large connecting pipe (10), and the air bag (4) is arranged in the sealing groove (33).
8. The atmospheric pressure test sealing device according to claim 1, wherein a plurality of rib plates (2) are provided, and a plurality of rib plates (2) are arranged between the pressure test cover (1) and the sealing plate (3) at equal intervals.
9. The atmospheric pressure test sealing device according to claim 1, wherein the air charging pipeline (5) is provided with an air inlet valve body (51) and an air release valve body (52).
10. The atmospheric pressure test sealing device according to claim 3, wherein the sealing rubber plate (111) has a ring-shaped structure, and a sectional view of the sealing rubber plate (111) in a circumferential direction thereof has a rectangular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223538036.4U CN219303343U (en) | 2022-12-29 | 2022-12-29 | Atmospheric pressure test sealing device for atmospheric connection pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223538036.4U CN219303343U (en) | 2022-12-29 | 2022-12-29 | Atmospheric pressure test sealing device for atmospheric connection pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219303343U true CN219303343U (en) | 2023-07-04 |
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ID=86981094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223538036.4U Active CN219303343U (en) | 2022-12-29 | 2022-12-29 | Atmospheric pressure test sealing device for atmospheric connection pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219303343U (en) |
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2022
- 2022-12-29 CN CN202223538036.4U patent/CN219303343U/en active Active
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