CN212843874U - Irradiation-resistant magnetic float liquid level meter under high temperature and high pressure - Google Patents
Irradiation-resistant magnetic float liquid level meter under high temperature and high pressure Download PDFInfo
- Publication number
- CN212843874U CN212843874U CN202021417931.9U CN202021417931U CN212843874U CN 212843874 U CN212843874 U CN 212843874U CN 202021417931 U CN202021417931 U CN 202021417931U CN 212843874 U CN212843874 U CN 212843874U
- Authority
- CN
- China
- Prior art keywords
- measuring cylinder
- magnetic float
- mounting
- high temperature
- high pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model discloses a radiation-resistant magnetic float level gauge under high temperature and high pressure, which comprises a mounting flange, wherein the end part of the mounting flange is connected and/or communicated with a measuring cylinder; a guide pipe is arranged at the side of the measuring cylinder, wherein the guide pipe is communicated with the measured container; a magnetic floater is arranged in the measuring cylinder; the measuring cylinder is a measuring cylinder after demagnetization treatment; the magnetic floater is made of titanium alloy, wherein the internal pressure of the magnetic floater is not lower than 17.2 MPa. The magnetic float liquid level meter of the utility model can bear irradiation and perform reliable work under high temperature and high pressure environment, and especially improves the running reliability under the boundary environment of a loop of a nuclear power plant; performance degradation under high irradiation environment is avoided, damage is avoided, and operation of a nuclear power plant is avoided; the service life is prolonged, the production cost is reduced, the workload of workers is reduced, and the health of the workers is effectively maintained; and the strict requirement of a nuclear power plant primary circuit boundary environment is met.
Description
Technical Field
The utility model relates to a magnetism float level gauge, in particular to resistant irradiation's magnetism float level gauge under high temperature high pressure.
Background
The nuclear island is a general term for a nuclear reactor in a containment of the nuclear power plant and various systems related to the reactor. The main function of the nuclear island is to generate steam by using nuclear fission energy; the nuclear island plant mainly comprises a reactor plant (containment), a nuclear fuel plant, a nuclear auxiliary plant, a nuclear service plant, an exhaust chimney, an electrical plant, an emergency diesel generator plant and the like.
The nuclear island working condition of the nuclear power plant has high radioactivity, particularly, the nuclear island working condition runs in a loop of the nuclear island (generally, the working temperature is about 350 ℃, the working pressure is about 17.2MPa), and meanwhile, the instrument needs to have radiation resistance meeting the requirement (about 60-year accumulated dose is 5.26E +03 Gy).
The liquid level measuring instrument for a primary loop needs to meet the strict requirement, and firstly, the liquid level measuring instruments for the boundary of the primary loop need to meet the high-temperature and high-pressure requirement, which has strict requirements on the material and structure design of the instruments. Meanwhile, when the irradiation dose is continuously applied to the electronic components, the performance of the electronic components is rapidly reduced, and irreversible damage to the instrument is caused, so that the normal operation of the nuclear power plant is influenced. Because the irradiation resistance exists, if the service life of the instrument is not enough, a new transmitter needs to be replaced, the production cost is increased, the workload of personnel is increased, and health risks are brought to the personnel who replace the instrument, so that the irradiation-resistant magnetic float liquid level meter under high temperature and high pressure is urgently needed.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art's defect, provide a resistant magnetic float level gauge of irradiation under high temperature and high pressure.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model relates to a radiation-resistant magnetic float liquid level meter under high temperature and high pressure, which comprises a mounting flange, wherein,
the end part of the mounting flange is connected and/or communicated with a measuring cylinder;
a guide tube is arranged at the side of the measuring cylinder, wherein,
the guide pipe is communicated with the measured container;
a magnetic float is arranged in the measuring cylinder, wherein,
a plurality of permanent magnetic steels are arranged in the magnetic floater;
the measuring cylinder is sleeved with a mounting pipe hoop, wherein,
at least two mounting pipe hoops are arranged;
a dry spring chain is arranged between the mounting pipe hoops, wherein,
the mounting collar is also used to secure the transmitter.
As a preferred technical scheme of the utility model, the end of the mounting flange is provided with a flange mounting bolt;
one side of the mounting flange is provided with a mounting bracket, wherein,
the mounting bracket covers the side and the bottom of the mounting flange.
As an optimized technical scheme of the utility model, the changer is provided with two at least.
As a preferred technical solution of the present invention, the measuring cylinder is made of 316L stainless steel, wherein,
the measuring cylinder is a measuring cylinder after demagnetization treatment.
As a preferred technical proposal of the utility model, the magnetic floater is made of titanium alloy, wherein,
the internal pressure of the magnetic floater is not lower than 17.2 MPa.
As a preferred technical scheme of the utility model, the sealing part in the transmitter is made of phenylene ether silicon rubber;
the transmitter is made of 316L stainless steel.
As a preferable technical proposal of the utility model, at least two guide pipes are arranged, wherein,
the upward folding angle of the guide pipe is not less than 5 degrees.
As an optimal technical scheme of the utility model, the installing support mounting flange with flange mounting bolt is formed by the whole processing of 316L forging.
The utility model discloses the beneficial effect who reaches is: the magnetic float liquid level meter of the utility model can bear irradiation and perform reliable work under high temperature and high pressure environment, and especially improves the running reliability under the boundary environment of a loop of a nuclear power plant; performance degradation under high irradiation environment is avoided, damage is avoided, and operation of a nuclear power plant is avoided; the service life is prolonged, the production cost is reduced, the workload of workers is reduced, and the health of the workers is effectively maintained; and the strict requirement of a nuclear power plant primary circuit boundary environment is met.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is one of the schematic structural diagrams of the present invention;
fig. 2 is a second schematic structural diagram of the present invention;
fig. 3 is a third schematic structural diagram of the present invention;
in the figure: 1. a measuring cylinder; 2. mounting a bracket; 3. installing a flange; 4. mounting bolts on the flanges; 5. guiding a pipe; 6. a dry spring chain; 7. installing a pipe hoop; 8. a magnetic float; 9. and a transmitter.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Examples
As shown in fig. 1-3, the utility model provides a radiation-resistant magnetic float level gauge under high temperature and high pressure, which comprises an installation flange 3, wherein the end of the installation flange 3 is connected and/or communicated with a measuring cylinder 1;
a guide pipe 5 is arranged at the side of the measuring cylinder 1, wherein the guide pipe 5 is communicated with a measured container (a primary reactor core water replenishing tank), a magnetic floater 8 is arranged in the measuring cylinder 1, a plurality of permanent magnetic steels are arranged in the magnetic floater 8, when the measuring cylinder works (runs), the magnetic floater 8 moves up and down along with the lifting of the liquid level in the measuring cylinder 1 according to the buoyancy principle, the permanent magnetic steels in the magnetic floater 8 are matched with the dry spring chain 6 for use through the magnetic coupling effect, and variable resistance electric signals are output to realize the monitoring of the liquid level and the transmission of the signals;
the measuring tube 1 is sleeved with the installation pipe hoops 7, wherein the installation pipe hoops 7 are at least provided with two, the reed chains 6 are arranged between the installation pipe hoops 7, the installation pipe hoops 7 are further used for fixing the transmitters 9, high-temperature and high-pressure media are arranged inside the measuring tube, the installation pipe hoops 7 are connected in a mode of ensuring the service life of the reed pipes 6 and the transmitters 9, so that high-temperature influence is kept away, the transmitters 9 are at least provided with two, one instrument is provided with two transmitters 9, the instrument can rotate circumferentially by 0-180 degrees according to field requirements, and the requirement and the environment are further adapted.
Further, a flange mounting bolt 4 is mounted at the end of the mounting flange 3, and a mounting bracket 2 is arranged on one side of the mounting flange 3, wherein the mounting bracket 2 covers the side and the bottom of the mounting flange 3, so that the mounting bracket 2 is more firmly fixed, and the mounting bracket 2, the mounting flange 3 and the flange mounting bolt 4 are integrally machined from a 316L forged piece to meet the field mounting requirement; the material of the mounting bracket 2 is subjected to cobalt and nitrogen control treatment.
Specifically, the measuring cylinder 1 is made of 316L stainless steel, wherein the measuring cylinder 1 is the measuring cylinder 1 after demagnetization treatment, so that interference on a magnetic signal of the magnetic floater 8 in the measuring cylinder 1 is minimized, and the reliability of the instrument is ensured.
The magnetic float 8 is made of titanium alloy, and in another preferred embodiment of the present invention, TC4 titanium alloy, and is filled with a certain internal pressure, and the internal pressure of the magnetic float 8 is not lower than 17.2Mpa to offset the working pressure (17.2Mpa), thereby ensuring its reliable operation under high temperature and high pressure conditions.
The general magnetic float level meter has at least 2 or only 2 transmitters 9, and the sealing part in each transmitter 9 is made of materials such as phenylene ether silicon rubber and the like, so that the irradiation resistance effect is realized;
At least two guide pipes 5 are arranged, wherein the upward bending angle of the guide pipes 5 is not less than 5 degrees, and the guide pipes are connected with a tested container (a primary reactor core water replenishing tank) for bypass.
When the device is used (operated), the guide pipe 5 is communicated with a measured container (a primary loop reactor core water replenishing tank), the measuring cylinder 1 is internally provided with a magnetic floater 8, wherein the magnetic floater 8 is internally provided with a plurality of permanent magnetic steels, when the device works (operates), the magnetic floater 8 moves up and down along with the lifting of the liquid level in the measuring cylinder 1 according to the buoyancy principle, the permanent magnetic steels in the magnetic floater 8 are matched with the dry spring chain 6 for use through the magnetic coupling effect, and variable resistance electric signals are output to realize the monitoring of the liquid level and the transmission of the signals; the measuring cylinder 1 is the measuring cylinder 1 after demagnetization treatment, so that the interference on the magnetic signal of the magnetic floater 8 in the measuring cylinder 1 is reduced to the minimum, and the reliability of the instrument is ensured; the magnetic floater 8 is made of titanium alloy (especially TC4 titanium alloy) and is filled with certain internal pressure, the internal pressure of the magnetic floater 8 is not lower than 17.2MPa to offset the working pressure (17.2MPa), thereby ensuring the reliable operation under the conditions of high temperature and high pressure; the sealing parts in the transmitter 9 are made of materials such as phenylene ether silicon rubber and the like, so that the radiation resistance effect is realized.
The magnetic float liquid level meter of the utility model can bear irradiation and perform reliable work under high temperature and high pressure environment, and especially improves the running reliability under the boundary environment of a loop of a nuclear power plant; performance degradation under high irradiation environment is avoided, damage is avoided, and operation of a nuclear power plant is avoided; the service life is prolonged, the production cost is reduced, the workload of workers is reduced, and the health of the workers is effectively maintained; and the strict requirement of a nuclear power plant primary circuit boundary environment is met.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A magnetic float liquid level meter with high temperature and high pressure radiation resistance is characterized in that the liquid level meter comprises a mounting flange (3), wherein,
the end part of the mounting flange (3) is connected and/or communicated with a measuring cylinder (1);
a guide tube (5) is arranged at the side of the measuring cylinder (1), wherein,
the guide pipe (5) is communicated with a measured container;
a magnetic float (8) is arranged in the measuring cylinder (1), wherein,
a plurality of permanent magnetic steels are arranged in the magnetic floater (8);
the measuring cylinder (1) is sleeved with a mounting pipe hoop (7), wherein,
at least two mounting pipe hoops (7) are arranged;
a dry spring chain (6) is arranged between the mounting pipe hoops (7), wherein,
the mounting pipe hoop (7) is also used for fixing a transmitter (9).
2. The high-temperature high-pressure radiation-resistant magnetic float liquid level meter as claimed in claim 1, characterized in that the end of the mounting flange (3) is provided with a flange mounting bolt (4);
a mounting bracket (2) is arranged at one side of the mounting flange (3), wherein,
installing support (2) cover the avris and the bottom of mounting flange (3).
3. A high temperature and high pressure irradiation resistant magnetic float level gauge according to claim 1 or 2, characterized in that at least two transmitters (9) are provided.
4. A high temperature and high pressure radiation resistant magnetic float level gauge as claimed in claim 3, wherein said measuring cylinder (1) is made of 316L stainless steel, wherein,
the measuring cylinder (1) is the measuring cylinder (1) after demagnetization treatment.
5. A high temperature and high pressure radiation-resistant magnetic float level gauge according to claim 4, wherein the magnetic float (8) is made of titanium alloy, wherein,
the internal pressure of the magnetic floater (8) is not lower than 17.2 MPa.
6. A high temperature and high pressure radiation resistant magnetic float level gauge according to claim 4, characterized in that the sealing part in the transmitter (9) is made of phenylene ether silicone rubber;
the transmitter (9) is made of 316L stainless steel.
7. A high temperature and high pressure radiation-resistant magnetic float level gauge according to claim 4, wherein at least two of said guide tubes (5) are provided,
the upward folding angle of the guide pipe (5) is not less than 5 degrees.
8. The high-temperature high-pressure radiation-resistant magnetic float liquid level meter as claimed in claim 2, wherein the mounting bracket (2), the mounting flange (3) and the flange mounting bolt (4) are integrally machined from a 316L forging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021417931.9U CN212843874U (en) | 2020-07-17 | 2020-07-17 | Irradiation-resistant magnetic float liquid level meter under high temperature and high pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021417931.9U CN212843874U (en) | 2020-07-17 | 2020-07-17 | Irradiation-resistant magnetic float liquid level meter under high temperature and high pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212843874U true CN212843874U (en) | 2021-03-30 |
Family
ID=75117921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021417931.9U Active CN212843874U (en) | 2020-07-17 | 2020-07-17 | Irradiation-resistant magnetic float liquid level meter under high temperature and high pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212843874U (en) |
-
2020
- 2020-07-17 CN CN202021417931.9U patent/CN212843874U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103871515B (en) | A kind of reactor pressure vessel main pipeline ultrasonic examination instrument | |
| CN105508234A (en) | Nuclear power main pump test device | |
| CN107767970A (en) | A kind of long-life high-temperature resistant magnetic force hoisting type reactor control rod driving mechanism | |
| CN212843874U (en) | Irradiation-resistant magnetic float liquid level meter under high temperature and high pressure | |
| Wade | Steam generator degradation and its impact on continued operation of pressurized water reactors in the United States | |
| US4076584A (en) | Rodded shutdown system for a nuclear reactor | |
| CN208873481U (en) | A kind of nuclear power station-service control rod drive mechanism | |
| CN114482647A (en) | Nuclear island plant layout planning method and nuclear island plant | |
| Yurmanov et al. | Chemistry and corrosion issues in supercritical water reactors | |
| CN218726772U (en) | Shielding formula gamma ray detection device | |
| CN203216873U (en) | Remotely controlled gamma-ray flaw detector | |
| Khan et al. | Role of in-service inspections in nuclear power plants (NPPs) | |
| CN212659480U (en) | Irradiation-resistant magnetic float liquid level switch | |
| CN207850482U (en) | A kind of feed pump turbine main fuel tank magnetic floating liquid level gauge | |
| CN209766051U (en) | Safety-level instrument of marine nuclear power platform | |
| CN203348059U (en) | 300MW reactor coolant pump measuring system | |
| CN205401079U (en) | Nuclear power owner pump test device | |
| CN219179285U (en) | Pipeline mud electric signal acquisition device | |
| CN109961864A (en) | Heavy water reactor fuel handling white-out station potentiometer protective device | |
| CN201376154Y (en) | Underwater oscillation center sensor | |
| CN203376063U (en) | Protection device capable of improving shock resistance of temperature measurement component | |
| Sharma | Safety enhancement in CIRUS through ageing management and refurbishing | |
| SHARMA | Trombay, Mumbai-400 085, India; Fax:+ 91225505311; Email: sksharma@ apsara. barc. ernet. in | |
| CN117594255A (en) | Device for releasing pressure to seawater under severe accident of ocean floating nuclear power plant | |
| Brown et al. | Containment penetrations—Flexible metallic bellows: Testing, safety, life extension issues |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |