CN109801721B - Rupture disk protection device with alarm function - Google Patents
Rupture disk protection device with alarm function Download PDFInfo
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- CN109801721B CN109801721B CN201910017971.XA CN201910017971A CN109801721B CN 109801721 B CN109801721 B CN 109801721B CN 201910017971 A CN201910017971 A CN 201910017971A CN 109801721 B CN109801721 B CN 109801721B
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- Prior art keywords
- flange
- rupture disk
- sodium
- connecting pipe
- rupture
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- 229910052708 sodium Inorganic materials 0.000 claims abstract description 58
- 239000011734 sodium Substances 0.000 claims abstract description 58
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 230000004044 response Effects 0.000 claims abstract description 17
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 12
- 229910052786 argon Inorganic materials 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000376 reactant Substances 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- NASFKTWZWDYFER-UHFFFAOYSA-N sodium;hydrate Chemical compound O.[Na] NASFKTWZWDYFER-UHFFFAOYSA-N 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 239000007795 chemical reaction product Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 208000032767 Device breakage Diseases 0.000 description 3
- 230000009172 bursting Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Safety Valves (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention belongs to the technical field of pressure relief protection of nuclear reactor steam generators, and in particular relates to a rupture disk protection device with an alarm function, which comprises a connecting pipe arranged in a cavity formed by sealing connection of a top cover and a shell; the connecting pipe inlet at the bottom end of the connecting pipe is connected to the base at the bottom end of the shell and is used as a discharging channel of the steam generator during sodium water reaction; the top end of the connecting pipe is sealed by a replaceable rupture disk; the top end of the top cover is provided with any one or more of a high-speed response thermocouple, a sodium leakage detector, a high-temperature lead terminal and an ultra-high-temperature pressure transmitter which are connected with an external alarm system; the shell is provided with a pressure relief outlet, the rupture disk bursts when the internal gas pressure reaches a set value, and the alarm system generates an alarm signal according to any one or more signals sent by the high-speed response thermocouple, the sodium leakage detector, the high-temperature lead terminal and the ultra-high-temperature pressure transmitter; argon is filled in the cavity. The device can release pressure at a high speed, is low in maintenance cost and is easy to maintain and replace.
Description
Technical Field
The invention belongs to the technical field of pressure relief protection of nuclear reactor steam generators, and particularly relates to a rupture disk protection device with an alarm function.
Background
The steam generator is a key device of a main heat transmission system of the sodium-cooled fast reactor. In the operation process of the sodium-cooled fast reactor, the steam generator operates for a long time under the severe working conditions of high temperature, high pressure, high flow rate liquid flushing and sodium environment, and leakage accidents of the steam pipeline can occur. Once leakage occurs, water and sodium react with severe sodium water to release a large amount of heat, so that the temperature and pressure near the sodium water reaction area are rapidly increased, the leakage is expanded and spread, the steam generator is damaged, and the normal operation of the sodium-cooled fast reactor is threatened in severe cases.
Because the sodium water reaction is an explosion reaction which rapidly releases hydrogen and rapidly increases pressure, the rapid release of overpressure and reactants at the moment of sodium water reaction is an effective measure for preventing disaster expansion. At present, the control technology adopted by each country aiming at the accident working condition is the same, namely, the overpressure relief when the sodium water reaction occurs is realized by installing the rupture disk device, but the specific technical scheme and the technical requirement are different.
Meanwhile, although the rupture disc device can realize overpressure relief, the rupture disc device cannot provide an immediate alarm signal for operators and a main protection system of the steam generator. When the rupture disk protection system bursts, an operator can only determine the action of the rupture disk by means of passive methods such as the change of the operating parameters of the steam generator, the change of the monitoring parameters of the effluent collection tank and the like, and accordingly, the sodium water reaction in the steam generator is judged. This situation is prone to cause insufficient rapidity of accident emergency due to response delay, and there is a potential risk of accident expansion.
Disclosure of Invention
The invention aims to provide a rupture disk protection device with an alarm function, which can timely burst and rapidly release pressure after sodium water reaction occurs in a steam generator to cause overpressure of equipment so as to realize the integrity of the pressure boundary of a two-loop main cooling system, prevent disaster expansion and send an alarm signal.
In order to achieve the purpose, the technical scheme adopted by the invention is that the rupture disk protection device with the alarm function is used for pressure relief protection when sodium water reaction occurs in a steam generator in a sodium-cooled fast reactor, and comprises a connecting pipe arranged in a cavity formed by sealing connection of a top cover and a shell; a connecting pipe inlet at the bottom end of the connecting pipe is connected to a base at the bottom end of the shell and is used for being communicated with the steam generator to serve as a release channel of the internal gas pressure of the steam generator during sodium water reaction; the top end of the connecting pipe is sealed by a replaceable rupture disk; the top end of the top cover is provided with any one or more of a high-speed response thermocouple, a sodium leakage detector, a high-temperature lead terminal and an ultra-high-temperature pressure transmitter which are connected with an external alarm system at a position close to the upper part of the rupture disk; the shell is also provided with a pressure relief outlet used for communicating pressure relief equipment, and the rupture disk can burst when the internal gas pressure reaches a set value, so that gas enters the cavity through the connecting pipe and enters the pressure relief equipment through the pressure relief outlet; the alarm system sends an alarm signal when the temperature detected by the high-speed response thermocouple reaches a set temperature, or when a reactant reacting with sodium water contacts the sodium leakage detector, or when a reactant reacting with sodium water contacts the high-temperature wire terminal, or when the pressure detected by the ultra-high temperature pressure transmitter reaches a set pressure; argon is filled in the cavity.
Further, the top cover bottom is provided with a first upper flange, the top end of the shell is provided with a first lower flange, and the top cover and the shell are in sealing connection through the first upper flange and the first lower flange to form the cavity.
Further, a second lower flange and a second upper flange are arranged at the top end of the connecting pipe, and the rupture disk is arranged at the top end of the connecting pipe in a sealing way through the second lower flange and the second upper flange.
Further, the rupture disk is arranged on the clamp holder in a sealing manner through welding to form a rupture disk device, and the rupture disk device is arranged at the top end of the connecting pipe in a sealing manner through the second lower flange and the second upper flange; the rupture disc device and the second lower flange are sealed through a second conical gasket, or double sealing is realized through the second conical gasket and a metal ring, and the metal ring is a 0-type metal ring or a C-type metal ring; the rupture disc device and the second upper flange may or may not be sealed by a metal gasket.
Further, sealing is realized between the first upper flange and the first lower flange through a first conical gasket; and a flat gasket is arranged at the bolt connection position of the first upper flange and the first lower flange at the periphery of the first conical gasket to realize further sealing between the first upper flange and the first lower flange, and the bolts penetrate through the flat gasket to connect the first upper flange and the first lower flange.
Further, an intermediate flange is arranged between the second lower flange and the second upper flange, the three flanges are connected through bolts, and the rupture disk is arranged between the second upper flange and the intermediate flange; the part of the middle flange, which is contacted with the edge of the rupture disk, is provided with a ring groove, and the top end of the connection pipe is sealed by the rupture disk through the compression limitation of the ring groove and the bulge part of the rupture disk; or a metal gasket is arranged between the middle flange and the rupture disk to seal the top end of the connection pipe by the rupture disk.
Further, the sealing between the intermediate flange and the second lower flange is realized by a fourth conical gasket.
Further, sealing is achieved between the first upper flange and the first lower flange through a third conical gasket.
Further, the device also comprises a low-point sodium discharge pipe arranged on the base, wherein the low-point sodium discharge pipe is used for communicating an external container with the first upper flange and the first lower flange to form a cavity in a sealing connection mode, and liquid sodium in the cavity is discharged.
The invention has the beneficial effects that:
1. can generate large sodium water reaction in the steam generator, and can release pressure at a high speed after the overpressure of the equipment is caused, thereby preventing the expansion of accidents.
2. The rupture disk protection device with the alarm function has low processing and maintenance cost and is easy to repair and replace.
Drawings
FIG. 1 is a schematic illustration of a burst disk protection device with an alarm function of type A in accordance with an embodiment of the present invention; (the arrows in the figure are the gas leakage direction)
FIG. 2 is a schematic illustration of a burst disk protection device with an alarm function of type B in accordance with an embodiment of the present invention; (the arrows in the figure are the gas leakage direction)
In the figure: 1-base, 2-nameplate, 3-burst disc label, 4-housing, 5-first lower flange, 6-first conical gasket, 7-first upper flange, 8-top cap, 9-bolt, 10-nut, 11-gasket, 12-second upper flange, 13-burst disc device, 14-second conical gasket, 15-second lower flange, 16-nipple, 17-burst disc, 18-top cap hook, 19-pressure relief outlet, 20-low point sodium drain, 21-nipple inlet, 22-flat gasket, 23-third conical gasket, 24-fourth conical gasket, 25-intermediate flange, 26-sodium leak detector, 27-high temperature wire terminal, 28-high speed response thermocouple, 29-ultra high temperature pressure transmitter, 30-alarm system.
Detailed Description
The invention is further described below with reference to the drawings and examples.
The invention provides a rupture disk protection device with an alarm function, which is used for pressure relief protection of a steam generator in a sodium-cooled fast reactor and comprises a shell 4, a top cover 8, a connecting pipe 16, a rupture disk 17, a sodium leakage detector 26, a high-temperature wire terminal 27, a high-speed response thermocouple 28, an ultrahigh-temperature pressure transmitter 29, an alarm system 30 and the like.
As shown in fig. 1 and 2, the top cover 8 is cylindrical, the top end is sealed, and the bottom end is provided with a first upper flange 7; the top of the shell 4 is provided with a first lower flange 5, and the bottom is provided with a base 1. The top cover 8 and the housing 4 are connected in a sealing manner by the first upper flange 7 and the first lower flange 5 to form a cavity.
The connecting pipe 16 is vertically arranged in a cavity formed by sealing connection of the top cover 8 and the shell 4; a connecting pipe inlet 21 at the bottom end of the connecting pipe 16 is connected to the base 1 at the bottom end of the shell 4 and is used for communicating with the steam generator, so that the connecting pipe 16 is used as a release channel of internal gas pressure when sodium water reaction occurs in the steam generator; the top end of the connecting pipe 16 is provided with a rupture disk 17 in a sealing way; the shell 4 is also provided with a pressure relief outlet 19 for communicating with pressure relief equipment; the rupture disk 17 is a circular sheet, and during the pressure relief process, the rupture disk 17 is capable of bursting when the internal gas pressure reaches a set value (the upper limit allowable value of the rupture disk) so that gas enters the cavity through the nipple 16 and enters the pressure relief device through the pressure relief outlet 19.
The top end of the connecting pipe 16 is provided with a second lower flange 15 and a second upper flange 12, the top ends of the second lower flange 15 and the connecting pipe 16 are in sealing connection, and the rupture disk 17 is arranged at the top end of the connecting pipe 16 in a sealing manner through the second lower flange 15 and the second upper flange 12.
The base 1 is also provided with a low-point sodium discharge pipe 20, the low-point sodium discharge pipe 20 is used for communicating an outer container with the first upper flange 7 and the first lower flange 5 to form a cavity in a sealing connection mode, and liquid sodium entering the cavity in the pressure release process is discharged.
The cap hook 18 on the outer surface of the cap 8 is used to lift the device during installation and servicing of the rupture disc protection apparatus.
A sodium leak detector 26, a high temperature lead terminal 27, a high speed response thermocouple 28 and an ultra-high temperature pressure transmitter 29, or any one or more of which are connected with an external alarm system 30 are arranged at the top end of the top cover 8 near the upper part of the rupture disk 17, and when any one or more of the four detection devices are selected, multiple alarms can be realized through alarm signals provided by the different detection devices. Argon is filled into the cavity of the rupture disk protection device, which refers to the space of the rupture disk protection device other than the space inside the adapter tube 16, namely the non-pressure-bearing side of the rupture disk 17. Any one or more of sodium leak detector 26, high temperature lead terminal 27, high speed response thermocouple 28, ultra high temperature pressure transmitter 29 causes alarm system 30 to emit an alarm signal that indicates that rupture disc 17 has been ruptured. In actual use, to improve system reliability, a plurality of sodium leak detectors 26, high temperature lead terminals 27, high speed response thermocouples 28, ultra-high temperature pressure transmitters 29 may be disposed on the non-pressure-bearing side of rupture disk 17, with these sodium leak detectors 26, high temperature lead terminals 27, high speed response thermocouples 28, ultra-high temperature pressure transmitters 29 being connected in parallel to alarm system 30.
The alarm principle of the four detection devices is as follows:
A sodium leak detector 26,
When the rupture disc protection device is not exploded, argon is arranged in the non-bearing side space of the rupture disc 17 and is in a non-conductive state, the sodium leakage detector 26 is in a standby state, and the alarm system 30 does not alarm. When sodium water reaction occurs and overpressure is caused, the rupture disk of the rupture disk protection device bursts, and high-temperature sodium water reaction products are discharged through the discharge channel, so that the non-bearing side space is in a conductive state. For this case, one or more sodium leak detectors 26 are provided on the unpressurized side of the rupture disk 17, and once the sodium water reaction occurs and causes overpressure relief, the high temperature sodium water reaction products are ejected and contact the sodium leak detectors 26, with the conductivity of the sodium, the alarm circuit will conduct and the alarm system 30 will generate an alarm signal.
A high temperature wire terminal 27,
When the rupture disc protection device is not exploded, argon is arranged in the non-bearing side space of the rupture disc 17 and is in a non-conductive state, at the moment, the high-temperature wire terminal 27 is in a disconnection state, and the alarm system 30 does not alarm. When the sodium water reaction occurs and causes overpressure, the rupture disk 17 of the rupture disk protection device bursts, and the high temperature sodium water reaction product is discharged through the discharge passage of the rupture disk protection device, so that the space on the non-pressure-bearing side of the rupture disk 17 is in a conductive state. For this case, one or more high temperature wire terminals 27 are provided on the non-pressure-bearing side of the rupture disc 17, after which an alarm circuit is connected. Once the sodium water reaction occurs and causes the overpressure to bleed, the high temperature sodium water reaction products are ejected and contact the high temperature wire terminals 27 and the alarm circuit will conduct and the alarm system 30 generates an alarm signal.
In response to the thermocouple 28 at a high speed,
When the rupture disc protection device is not exploded, the temperature of the non-pressure-bearing side of the rupture disc 17 is a stable value (normal temperature or 250 ℃ C. And the temperature is different under different environments according to the environment in which the rupture disc protection device is installed), and the alarm system 30 does not alarm. When the sodium water reaction occurs and causes an overpressure, the rupture disk 17 of the rupture disk protector bursts and the high temperature sodium water reaction product (about 500 ℃) will bleed through the bleed passage of the rupture disk protector causing the non-pressure side temperature of the rupture disk 17 to rise rapidly in a moment. For this case, one or more high speed response thermocouples 28 are provided on the unpressurized side of the rupture disk 17, followed by a temperature acquisition and alarm system 30. When the system collects that one or more high-speed response thermocouples 28 are instantaneously raised in temperature, the alarm system 30 outputs an alarm signal;
an ultra-high temperature pressure transducer 29,
When the ultra-high temperature pressure transmitter 29 works, the ultra-high temperature medium pressure is transmitted to the pressure and differential pressure transmitter body through the ultra-high temperature resistant high-viscosity high-temperature filling liquid, so that the pressure transmission and measurement are realized. The structure has the characteristics of high measurement accuracy, short response time, high reliability and the like. When the rupture disk protection device is not exploded, the non-bearing side pressure of the rupture disk 17 is a stable value (0.05 MPa or normal pressure, and the pressures are different under different environments according to the environments in which the rupture disk protection device is installed), and the alarm system 30 does not alarm. When the sodium water reaction occurs and causes overpressure, the rupture disk 17 of the rupture disk protection device bursts, and the high temperature sodium water reaction product will bleed through the bleed passage of the rupture disk protection device, causing the non-pressure bearing side pressure of the rupture disk 17 to rise rapidly and instantaneously. For this case, one or more ultra-high temperature pressure transmitters 29 are provided on the non-pressure-bearing side of the rupture disk 17, after which a pressure acquisition and alarm system 30 is connected. When the system collects that the pressure transmitter rises instantaneously, the alarm system 30 outputs an alarm signal.
In addition, according to actual needs, the rupture disk protection device with the alarm function provided by the invention comprises a type A and a type B, and the specific differences are as follows:
the A-type rupture disk protection device with the alarm function is shown in figure 1,
The rupture disk 17 is sealed and arranged on the clamp holder through welding to form a rupture disk device 13, and the rupture disk device 13 is sealed and arranged at the top end of the connecting pipe 16 through a second lower flange 15 and a second upper flange 12; sealing is realized between the rupture disc device 13 and the second lower flange 15 through a second conical gasket 14, or double sealing is realized through the second conical gasket 14 and a metal ring, wherein the metal ring is an O-shaped metal ring or a C-shaped metal ring; the rupture disc device 13 and the second upper flange 12 may or may not be sealed by a metal gasket.
The first upper flange 7 and the first lower flange 5 are sealed by a first conical gasket 6; at the location of the bolting of the first upper flange 7 and the first lower flange 5 at the periphery of the first conical gasket 6, a flat gasket 22 is provided, which achieves a further sealing between the first upper flange 7 and the first lower flange 5, the bolts passing through the flat gasket 22 to connect the first upper flange 7 and the first lower flange 5.
After the rupture disk 17 is ruptured, the rupture disk device 13 can be replaced as a whole without cutting the pipeline.
Type B burst disk protection device with alarm function, as shown in figure 2,
An intermediate flange 25 is arranged between the second lower flange 15 and the second upper flange 12, the three flanges are connected through bolts, and the rupture disc 17 is arranged between the second upper flange 12 and the intermediate flange 25; the part of the middle flange 25, which is contacted with the edge of the rupture disc 17, is provided with a ring groove, and the top end of the abutting tube 16 of the rupture disc 17 is sealed by the compression limitation of the ring groove and the bulge part of the rupture disc 17; or a metal gasket is provided between the intermediate flange 25 and the rupture disk 17 to seal the rupture disk 17 against the top end of the tube 16.
The sealing between the intermediate flange 25 and the second lower flange 15 is achieved by means of a fourth conical gasket 24.
The seal between the first upper flange 7 and the first lower flange 5 is achieved by means of a third conical gasket 23.
After the bursting disc 17 bursts, the bursting disc 17 can be directly replaced without cutting the pipeline.
The device according to the invention is not limited to the examples described in the specific embodiments, and a person skilled in the art obtains other embodiments according to the technical solution of the invention, which also belong to the technical innovation scope of the invention.
Claims (9)
1. A burst disk protection device with an alarm function is used for pressure relief protection when sodium-water reaction occurs in a steam generator in a sodium-cooled fast reactor, and is characterized in that: comprises a connecting pipe (16) arranged in a cavity formed by sealing connection of a top cover (8) and a shell (4); a connecting pipe inlet (21) at the bottom end of the connecting pipe (16) is connected to a base (1) at the bottom end of the shell (4) and is used for being communicated with the steam generator to serve as a release channel of the internal gas pressure of the steam generator during sodium water reaction; the top end of the connecting tube (16) is sealed by a replaceable rupture disk (17); the top end of the top cover (8) is close to the position above the rupture disc (17) and is provided with any one or more of a high-speed response thermocouple (28), a sodium leakage detector (26), a high-temperature lead terminal (27) and an ultra-high-temperature pressure transmitter (29) which are connected with an external alarm system (30); the shell (4) is also provided with a pressure relief outlet (19) for communicating pressure relief equipment, the rupture disc (17) can burst when the internal gas pressure reaches a set value, so that gas enters the cavity through the connecting pipe (16) and enters the pressure relief equipment through the pressure relief outlet (19); the alarm system (30) sends an alarm signal when the temperature detected by the high-speed response thermocouple (28) reaches a set temperature, or when a reactant of sodium water reaction contacts the sodium leakage detector (26), or when a reactant of sodium water reaction contacts the high-temperature wire terminal (27), or when the pressure detected by the ultra-high-temperature pressure transmitter (29) reaches a set pressure; argon is filled in the cavity.
2. The rupture disk protection device with an alarm function of claim 1, wherein: the top cap (8) bottom is equipped with first flange (7), shell (4) top is equipped with first flange (5), top cap (8) with shell (4) pass through first flange (7) with first flange (5) sealing connection constitutes the cavity.
3. The rupture disk protection device with an alarm function of claim 2, wherein: the top end of the connecting pipe (16) is provided with a second lower flange (15) and a second upper flange (12), and the rupture disk (17) is arranged at the top end of the connecting pipe (16) in a sealing way through the second lower flange (15) and the second upper flange (12).
4. A rupture disc protection apparatus with an alarm function as set forth in claim 3, wherein: the rupture disc (17) is hermetically arranged on the clamp holder through welding to form a rupture disc device (13), and the rupture disc device (13) is hermetically arranged at the top end of the connecting pipe (16) through the second lower flange (15) and the second upper flange (12); sealing is achieved between the rupture disc device (13) and the second lower flange (15) through a second conical gasket (14), or double sealing is achieved through the second conical gasket (14) and a metal ring, wherein the metal ring is an O-shaped metal ring or a C-shaped metal ring; the rupture disc device (13) and the second upper flange (12) may be sealed or unsealed by a metal gasket.
5. The rupture disk protection device with an alarm function of claim 4, wherein: the first upper flange (7) and the first lower flange (5) are sealed by a first conical gasket (6); and a flat gasket (22) is arranged at the bolt connection position of the first upper flange (7) and the first lower flange (5) at the periphery of the first conical gasket (6), so that further sealing between the first upper flange (7) and the first lower flange (5) is realized, and the bolts penetrate through the flat gasket (22) to connect the first upper flange (7) and the first lower flange (5).
6. A rupture disc protection apparatus with an alarm function as set forth in claim 3, wherein: an intermediate flange (25) is arranged between the second lower flange (15) and the second upper flange (12), the three flanges are connected through bolts, and the rupture disk (17) is arranged between the second upper flange (12) and the intermediate flange (25); the part of the middle flange (25) contacted with the edge of the rupture disc (17) is provided with a ring groove, and the top end of the connection tube (16) is sealed by the rupture disc (17) through the compression limitation of the ring groove and the bulge part of the rupture disc (17); or a metal gasket is arranged between the middle flange (25) and the rupture disk (17) to seal the top end of the rupture disk (17) to the connecting pipe (16).
7. The rupture disk protection device with an alarm function of claim 6, wherein: the intermediate flange (25) and the second lower flange (15) are sealed by a fourth conical gasket (24).
8. The rupture disk protection device with an alarm function of claim 7, wherein: the first upper flange (7) and the first lower flange (5) are sealed by a third conical gasket (23).
9. The rupture disk protection device with an alarm function of claim 2, wherein: the device also comprises a low-point sodium discharge pipe (20) arranged on the base (1), wherein the low-point sodium discharge pipe (20) is used for communicating an external container with the first upper flange (7) and the first lower flange (5) to form a cavity in a sealing connection mode, and liquid sodium in the cavity is discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910017971.XA CN109801721B (en) | 2019-01-09 | 2019-01-09 | Rupture disk protection device with alarm function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910017971.XA CN109801721B (en) | 2019-01-09 | 2019-01-09 | Rupture disk protection device with alarm function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109801721A CN109801721A (en) | 2019-05-24 |
| CN109801721B true CN109801721B (en) | 2024-05-10 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910017971.XA Active CN109801721B (en) | 2019-01-09 | 2019-01-09 | Rupture disk protection device with alarm function |
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| Country | Link |
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| CN (1) | CN109801721B (en) |
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