CN212301092U - Device for performing off-line hydrostatic test on hydrogen storage tank of nuclear power station - Google Patents
Device for performing off-line hydrostatic test on hydrogen storage tank of nuclear power station Download PDFInfo
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- CN212301092U CN212301092U CN202020896853.9U CN202020896853U CN212301092U CN 212301092 U CN212301092 U CN 212301092U CN 202020896853 U CN202020896853 U CN 202020896853U CN 212301092 U CN212301092 U CN 212301092U
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Abstract
The utility model discloses a device that is used for nuclear power station hydrogen storage tank to carry out off-line hydrostatic test, including first blind flange, second blind flange, fill drainage part, exhaust and pressure part and test pump, first blind flange connects in the first interface of nuclear power station hydrogen storage tank, and second blind flange connects in the second interface of nuclear power station hydrogen storage tank, and fill drainage part connects in the third interface of nuclear power station hydrogen storage tank, and exhaust and pressure part connect in the fourth interface of nuclear power station hydrogen storage tank, and test pump connects in filling drainage part. The utility model makes full use of a plurality of existing flange interfaces of the hydrogen storage tank of the nuclear power station, and can realize the off-line hydrostatic test of the hydrogen storage tank through the test pump, the water charging and discharging component and the pressure gauge; and when the test is carried out, high-risk operations such as welding, cutting and the like can be reduced, and the installation and the disassembly are facilitated.
Description
Technical Field
The utility model relates to a nuclear power station field, more particularly, relates to a device that is used for nuclear power station hydrogen storage tank to carry out off-line hydrostatic test.
Background
And the hydrogen production and distribution System (SHY) of the nuclear power station is used for preparing and storing hydrogen and sending the hydrogen to hydrogen users of the nuclear island and the conventional island through the hydrogen distribution system. The hydrogen production station is provided with 4 50 cubic hydrogen storage tanks and supporting facilities thereof.
The hydrogen storage tank belongs to a fixed pressure container according to TSG-21 fixed pressure container safety technology supervision regulations, and when the weld seam of the pressure container is repaired to exceed 50% of the weld seam thickness, a hydrostatic test is required to be carried out after the repair is finished as a pressure container integrity verification means. There is no need to regularly perform a conventional pressure vessel preventive hydrostatic test in compliance with the regulations, and thus there is no existing hydrostatic test device for such hydrogen storage tanks.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a device that is used for nuclear power station hydrogen storage tank to carry out off-line hydrostatic test.
In order to realize the above purpose, the utility model provides a device that is used for nuclear power station hydrogen storage tank to carry out off-line hydrostatic test, including first blind flange, second blind flange, fill drainage part, exhaust and pressure part and test pump, first blind flange connect in the first interface of nuclear power station hydrogen storage tank, second blind flange connect in the second interface of nuclear power station hydrogen storage tank, fill drainage part connect in the third interface of nuclear power station hydrogen storage tank, exhaust and pressure part connect in the fourth interface of nuclear power station hydrogen storage tank, test pump connect in fill drainage part.
The utility model provides an in the device, fill drainage part includes water intaking valve, first straight tube, second straight tube, fills drainage flange, elbow and adapter, the one end via of water intaking valve the second straight tube with the elbow is connected to fill drainage flange, fill drainage flange connect in the test pump the third interface, the other end via of water intaking valve first straight tube connection to the adapter.
The utility model provides an in the device, the water intaking valve the first straight tube the second straight tube fill the drainage flange with the elbow passes through welded connection.
The utility model provides an in the device, the adapter passes through threaded connection to first straight tube.
The utility model provides an in the device, still include high pressure hose, at the hydrostatic test stage, the test pump passes through high pressure hose connection indicates the adapter.
The device provided by the utility model, still include water delivery transparent hose, water delivery transparent hose fill the water stage connect in the adapter.
The utility model provides an in the device, exhaust and pressure part include third straight tube, discharge valve, drilling nozzle stub, manometer and exhaust flange, discharge valve's one end via the drilling nozzle stub connect in the manometer with the one end of exhaust flange, the other end of exhaust flange connect in nuclear power station hydrogen storage tank the fourth interface, discharge valve's the other end connect in the third straight tube.
In the apparatus provided by the present invention, the third straight pipe, the exhaust valve and the drilling short pipe are connected by welding.
In the apparatus provided by the present invention, the pressure gauge is connected to the drilling stub through a screw thread.
The utility model discloses a device for nuclear power station hydrogen storage tank carries out off-line hydrostatic test has following beneficial effect: the device for performing the off-line hydrostatic test provided by the utility model makes full use of a plurality of existing flange interfaces of the hydrogen storage tank of the nuclear power station, blind flanges are arranged on the first interface and the second interface, a flushing and draining part is arranged on the third interface, and an exhaust part and a pressure part are arranged on the fourth interface; therefore, the off-line water pressure test of the hydrogen storage tank can be realized through the test pump, the water charging and discharging part and the pressure gauge; and when the test is carried out, high-risk operations such as welding, cutting and the like can be reduced, and the installation and the disassembly are facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts:
fig. 1 is a schematic diagram of an apparatus for performing an off-line hydrostatic test on a hydrogen storage tank of a nuclear power plant according to the present invention;
FIG. 2 is a block diagram of the water charging and discharging part shown in FIG. 1;
fig. 3 is a block diagram of the vent and pressure components shown in fig. 1.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Exemplary embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the specific features in the embodiments and examples of the present invention are detailed descriptions of the technical solutions of the present application, but not limitations of the technical solutions of the present application, and the technical features in the embodiments and examples of the present invention can be combined with each other without conflict.
Fig. 1 shows a schematic diagram of an apparatus for performing an off-line hydrostatic test on a hydrogen storage tank of a nuclear power station. As shown in fig. 1, the utility model provides a device that is used for nuclear power station hydrogen storage tank 100 to carry out off-line hydrostatic test includes first blind flange 20, second blind flange 30, fill drainage part 40, exhaust and pressure part 50 and test pump 60, first blind flange 20 connect in the first interface of nuclear power station hydrogen storage tank 100, second blind flange 30 connect in the second interface of nuclear power station hydrogen storage tank 100, fill drainage part 40 connect in the third interface of nuclear power station hydrogen storage tank 100, exhaust and pressure part 50 connect in the fourth interface of nuclear power station hydrogen storage tank 100, test pump 60 connect in fill drainage part 40. The nuclear power station hydrogen storage tank 100 to be detected is provided with 5 flange interfaces, wherein a thermometer is connected to the first interface initially, and the fifth interface is a manhole. When an off-line hydrostatic test is carried out, a thermometer of the first interface needs to be detached, then a first blind flange and a second blind flange are respectively installed on the first interface and the second interface, a water charging and discharging component is installed on the third interface, and an exhaust component and a pressure component are installed on the fourth interface. Through the existing flange interface of make full use of hydrogen storage tank, can reduce high risk operation such as welding and cutting, do benefit to installation and dismantlement.
Specifically, in an embodiment of the present invention, as shown in fig. 2, the water charging and discharging component 40 is used for realizing water charging and discharging functions, and includes a water inlet valve 1, a first straight pipe 2, a second straight pipe 3, a water charging and discharging flange 4, an elbow 5 and an adapter 6, wherein one end of the water inlet valve 1 is connected to the water charging and discharging flange 4 through the second straight pipe 3 and the elbow 5, the water charging and discharging flange 4 is connected to the third interface of the test pump 60, and the other end of the water inlet valve 1 is connected to the adapter 6 through the first straight pipe 2. The adapter 6 is connected to the first straight pipe 2 through threads. Further, the first straight pipe is a 300mm long DN20 straight pipe, and the second straight pipe is a 350mm long DN20 straight pipe section. The water inlet valve 1, the first straight pipe 2, the second straight pipe 3, the water filling and draining flange 4 and the elbow 5 are connected into a welding assembly in a welding mode, 3/4' threads are machined on the hollow section of the first straight pipe, and the adapter 6 is in threaded connection with the machined welding assembly. Further, the adapter 6 is a fish scale buckle adapter when being filled with water, and the adapter is pressed when being pressed.
Further, in an embodiment of the present invention, the testing device further includes a high pressure hose, and in the hydraulic test stage, the testing pump 60 is connected to the adapter 6 through the high pressure hose. The length of the high-pressure hose is about 10 meters.
Further, in an embodiment of the present invention, the water supply device further includes a water transparent hose, and the water transparent hose is connected to the adapter 6 during the water filling stage. The length of the water-conveying transparent hose is about 100 meters.
Specifically, in an embodiment of the present invention, as shown in fig. 3, the exhaust and pressure component 50 mainly performs the functions of exhausting air and reading the hydrostatic test pressure during water filling, and includes a third straight pipe 7, an exhaust valve 8, a drilling short pipe 9, a pressure gauge 10 and an exhaust flange 11, wherein one end of the exhaust valve 8 is connected to the pressure gauge 10 and one end of the exhaust flange 11 through the drilling short pipe 9, the other end of the exhaust flange 11 is connected to the fourth port of the nuclear power station hydrogen storage tank 100, and the other end of the exhaust valve 8 is connected to the third straight pipe 7. Further, the third straight tube was DN20 straight tube with a length of 150 mm. The third straight pipe 7, the exhaust valve 8 and the drilling short pipe 9 are welded to form a welding assembly, and then the welding assembly is in threaded connection with a pressure gauge 10 with the range of 100bar and the precision of 1.0 level.
The working process of the device in the off-line hydrostatic test is explained in detail as follows:
1. preparing a hydrostatic test:
1) confirming that the results of the visual inspection of the inside and the outside of the hydrogen storage tank are qualified, and meeting the requirements of the hydrostatic test;
2) confirming that the hydrogen storage tank is moved out of the hydrogen production station, and verifying that the following isolation boundary states meet the water filling requirement: blind flanges are installed on the first interface and the second interface; the third interface is provided with an exhaust and pressure component, and the exhaust valve is in an open state; the fourth interface is provided with a water charging and discharging part; the fifth interface is opened and is used for observing the water filling liquid level;
2. filling water:
connecting a water filling and discharging component and a water source by using a water delivery transparent hose to fill water into the hydrogen storage tank, closing the fifth interface after the fifth interface is full of water, stopping filling water when water overflows from the exhaust valve, and closing the exhaust valve;
3. and (3) hydrostatic test:
and (3) removing the water delivery transparent hose, connecting the test pump through the high-pressure hose, checking the boundary and the fifth interface after the test pump is filled with water, starting the pressurizing pump to boost the pressure to the highest working pressure of 35.2bar after no leakage is confirmed, wherein the boosting rate does not exceed 10bar/min, and maintaining the pressure for 10 minutes. Comprehensively checking the surface, the welding line and the fifth interface of the visible hydrogen storage tank within the boundary range, carrying out abnormal timely pressure relief treatment, and repeating the steps of water filling and hydrostatic testing after the treatment; and (5) confirming that no leakage exists under the working pressure, boosting the pressure to the test pressure of 44bar, keeping the boosting rate not to exceed 10bar/min for 30 minutes, and checking the tightness of the hydrogen storage tank.
4. And (4) blood pressure reduction inspection:
after the pressure rise is finished, the pressure is reduced to 35.2bar at the speed of less than 10bar/min, the pressure is maintained for 30 minutes, the surface and the welding line of the hydrogen storage tank can be seen in the inspection boundary range, and water cannot be seeped. The test pressure must be kept constant throughout the test period. And (5) checking whether the hydrogen storage tank has obvious residual deformation, and filling a hydrostatic test report after the test is finished.
And after the pressure maintaining is finished, opening an exhaust valve to reduce the pressure to the atmospheric pressure at the speed of less than 10bar/min, then connecting a water inlet valve to a water outlet through a hose, opening the water inlet valve to drain water until the water is drained completely, and purging by using compressed air until the inner wall of the cylinder body is dry.
5. And (3) field recovery:
and (4) removing the water charging and discharging part, removing the exhaust and pressure part, removing the blind flange of the first interface and the blind flange of the second interface, reinstalling the thermometer, replacing the gasket of the fifth interface, and cleaning the site.
The device for performing the off-line hydrostatic test provided by the utility model makes full use of a plurality of existing flange interfaces of the hydrogen storage tank of the nuclear power station, blind flanges are arranged on the first interface and the second interface, a flushing and draining part is arranged on the third interface, and an exhaust part and a pressure part are arranged on the fourth interface; therefore, the off-line water pressure test of the hydrogen storage tank can be realized through the test pump, the water charging and discharging part and the pressure gauge; and when the test is carried out, high-risk operations such as welding, cutting and the like can be reduced, and the installation and the disassembly are facilitated.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: rather, the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Claims (9)
1. The utility model provides a device that is used for nuclear power station hydrogen storage tank (100) to carry out off-line hydrostatic test, its characterized in that includes first blind flange (20), second blind flange (30), fills drainage part (40), exhaust and pressure part (50) and test pump (60), first blind flange (20) connect in the first interface of nuclear power station hydrogen storage tank (100), second blind flange (30) connect in the second interface of nuclear power station hydrogen storage tank (100), fill drainage part (40) connect in the third interface of nuclear power station hydrogen storage tank (100), exhaust and pressure part (50) connect in the fourth interface of nuclear power station hydrogen storage tank (100), test pump (60) connect in fill drainage part (40).
2. The device according to claim 1, wherein the water charging and discharging part (40) comprises a water charging valve (1), a first straight pipe (2), a second straight pipe (3), a water charging and discharging flange (4), an elbow (5) and a joint (6), one end of the water charging valve (1) is connected to the water charging and discharging flange (4) through the second straight pipe (3) and the elbow (5), the water charging and discharging flange (4) is connected to the third interface of the test pump (60), and the other end of the water charging valve (1) is connected to the joint (6) through the first straight pipe (2).
3. The device according to claim 2, characterized in that the inlet valve (1), the first straight pipe (2), the second straight pipe (3), the water filling and draining flange (4) and the elbow (5) are connected by welding.
4. A device according to claim 2, characterised in that the adapter (6) is screwed to the first straight pipe (2).
5. The device according to claim 2, further comprising a high pressure hose, through which the test pump (60) is connected to the adapter (6) during the hydrostatic test phase.
6. The device according to claim 2, further comprising a water transparent hose connected to said adapter (6) during the filling phase.
7. The apparatus according to claim 1, wherein the exhaust and pressure means (50) comprises a third straight pipe (7), an exhaust valve (8), a bore stub (9), a pressure gauge (10) and an exhaust flange (11), one end of the exhaust valve (8) is connected to one ends of the pressure gauge (10) and the exhaust flange (11) via the bore stub (9), the other end of the exhaust flange (11) is connected to the fourth port of the nuclear power plant hydrogen storage tank (100), and the other end of the exhaust valve (8) is connected to the third straight pipe (7).
8. Device according to claim 7, characterized in that the third straight tube (7), the exhaust valve (8) and the drilling stub (9) are connected by welding.
9. The device according to claim 7, characterized in that the pressure gauge (10) is screwed to the drilling nipple (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020896853.9U CN212301092U (en) | 2020-05-25 | 2020-05-25 | Device for performing off-line hydrostatic test on hydrogen storage tank of nuclear power station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020896853.9U CN212301092U (en) | 2020-05-25 | 2020-05-25 | Device for performing off-line hydrostatic test on hydrogen storage tank of nuclear power station |
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| CN212301092U true CN212301092U (en) | 2021-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018509A (en) * | 2021-09-26 | 2022-02-08 | 厦门双瑞风电科技有限公司 | Assembled hydraulic bursting test joint for high-pressure hydrogen storage cylinder |
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2020
- 2020-05-25 CN CN202020896853.9U patent/CN212301092U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018509A (en) * | 2021-09-26 | 2022-02-08 | 厦门双瑞风电科技有限公司 | Assembled hydraulic bursting test joint for high-pressure hydrogen storage cylinder |
| CN114018509B (en) * | 2021-09-26 | 2024-04-05 | 厦门双瑞风电科技有限公司 | Assembled hydraulic bursting test joint for high-pressure hydrogen storage cylinder |
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