CN113593736B - Pulsation pressure measuring device and application method thereof - Google Patents
Pulsation pressure measuring device and application method thereof Download PDFInfo
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- CN113593736B CN113593736B CN202110834910.XA CN202110834910A CN113593736B CN 113593736 B CN113593736 B CN 113593736B CN 202110834910 A CN202110834910 A CN 202110834910A CN 113593736 B CN113593736 B CN 113593736B
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- protective cover
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- 230000010349 pulsation Effects 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title abstract description 10
- 230000001681 protective effect Effects 0.000 claims abstract description 57
- 238000005259 measurement Methods 0.000 claims abstract description 20
- 238000009530 blood pressure measurement Methods 0.000 claims abstract description 18
- 238000003466 welding Methods 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 4
- 230000035485 pulse pressure Effects 0.000 claims description 2
- 239000002826 coolant Substances 0.000 description 8
- 238000005452 bending Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/02—Devices or arrangements for monitoring coolant or moderator
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/017—Inspection or maintenance of pipe-lines or tubes in nuclear installations
-
- 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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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a pulsation pressure measurement device and a use method thereof, wherein the pulsation pressure measurement device comprises a protective cover and a high-temperature high-pressure sensor, a measurement through hole is formed in the protective cover, the high-temperature high-pressure sensor is fixed in the protective cover through a fixing piece, and a sensitive surface of the high-temperature high-pressure sensor penetrates through the measurement through hole and is level with the measurement through hole. The invention aims to provide a pulsation pressure measuring device and a using method thereof, which solve the problem that in the prior art, an opening is required to be arranged on a measuring structure to measure the surface pressure of a reactor inner structure.
Description
Technical Field
The invention relates to the technical field of surface pressure testing of a reactor internals structure, in particular to a pulsation pressure measuring device and a using method thereof.
Background
For a reactor, a large amount of heat generated by nuclear reaction is taken away by a high-flow-rate coolant, and the flow of the coolant can cause vibration of an in-reactor structure, so that the in-reactor structure has a flow-induced vibration problem as long as the reactor operates. When considering the vibration of the structural components of the reactor system induced by the coolant flow, it is necessary to know the excitation load of the fluid to the structure, and the pulsation pressure of the fluid acting on the surface of the structure is measured by a high-temperature high-pressure pulsation pressure sensor mounted on the structure in the reactor, so that the vibration safety of the structure is further evaluated, and the method has important engineering significance.
At present, a high-temperature high-pressure sensor for measuring the surface pressure of a reactor inner structure is designed into an armored type with an integrated lead, the front end of a sensor head is a sensitive surface for measuring the pressure, the rear end of the sensor head is a long sensor stainless steel lead, the general installation mode is that after a sensor passes through a structure pre-perforated hole, the sensitive surface of the front end of the sensor head is flush with the surface of the structure, the sensor lead is arranged at the rear end of the sensor head, and the load generated by pressure fluctuation of fluid acting on the structure is measured on the premise of not influencing a flow field.
However, in the reactor internals of an actual nuclear power plant, the structure is generally not allowed to be perforated for installing the pressure sensor, and even if perforation is allowed, the rear end has no operation space for arranging the sensor wires, so that a special pressure measuring device is required to be designed without damaging the measuring structure.
Disclosure of Invention
The invention aims to provide a pulsation pressure measuring device and a using method thereof, which solve the problem that in the prior art, an opening is required to be arranged on a measuring structure to measure the surface pressure of a reactor inner structure.
The invention is realized by the following technical scheme:
the utility model provides a pulsation pressure measuring device, includes safety cover and high temperature high pressure sensor, be provided with the measurement through-hole on the safety cover, high temperature high pressure sensor passes through the mounting and fixes in the safety cover, just high temperature high pressure sensor's sensitive surface runs through the measurement through-hole and with the measurement through-hole parallel and level.
In the prior art, in order to measure the surface pressure of the internal structure of the reactor, an opening for installing a sensor needs to be formed in the measuring structure, so that the structure of the internal structure of the reactor is damaged, and in the nuclear field, the structure of the internal structure of the reactor is required to be special, the service life of the internal structure of the reactor is influenced by the damage of the structure of the internal structure of the reactor, so that the use or maintenance cost is increased, and a certain risk exists in the damage of the structure of the internal structure of the reactor. Based on this, this scheme has proposed a pressure measuring device, when specifically using, need not to carry out the operation of pre-opening on the internal structure of heap, but directly install pressure measuring device in the structure surface, and the test is accomplished the back and is being dismantled the processing, consequently, can not destroy the structure of internal structure of heap, can overcome the defect that exists among the prior art. In addition, because the measuring device can be disassembled, the high-temperature high-pressure sensor can be reused, and the test cost can be effectively saved.
Preferably, the fixing member is a hollow bolt.
The hollow bolt is a hollow bolt, and when the screw is specifically used, the hollow bolt with the corresponding size is selected according to the size of the high-temperature high-pressure sensor, so that the high-temperature high-pressure sensor can be placed in the hollow part of the screw, and meanwhile, the high-temperature high-pressure sensor cannot fall off from the hollow part of the screw.
Preferably, threads are arranged in the measuring through hole, and the hollow bolt is in threaded connection with the measuring through hole.
Preferably, the high-temperature high-pressure sensor is an armored sensor with an integrated wire.
Preferably, a fixing device is further arranged in the protective cover, and the high-temperature high-pressure sensor wire arranged in the protective cover is fixed on the fixing device.
Because in the use, the coolant can wash away the surface of safety cover, in order to avoid because of the cooling water washes away the safety cover for a long time and leads to cavity bolt and measuring the through-hole not hard up and drop, the safety cover internal surface still is provided with fixing device for it is fixed to be located the pressure sensor wire of safety cover, thereby reduce the risk that drops, perhaps when dropping, protect the pressure sensor head through fixed sensor wire, avoid the pressure sensor head that drops to touch with the structural surface, damage the pressure sensor head.
Meanwhile, the pressure sensor wire is exposed out of the bottom of the hollow bolt, so that a certain distance exists between the pressure sensor wire and the top of the protective cover, and if the pressure sensor wire is directly fixed on the top of the protective cover, a certain bending exists on the pressure sensor wire, and the bending part is easy to break. Based on this, in the embodiment, two fixing devices are provided, one of which is provided at the top of the protective cover and the other of which is provided at the side wall of the protective cover. Specifically, the fixing seat is arranged at the top, so that the height of the fixing seat is slightly higher than the bottom of the hollow bolt, and when the pressure sensor wire is fixed, the pressure sensor wire cannot be bent horizontally at right angles, but is kept to be bent horizontally slowly after being vertically extended, and breakage of a bending part is avoided; meanwhile, clamping pieces are arranged on the inner side face of the protective cover and the fixed seat, and the pressure sensor wires are fixed through the clamping pieces, so that the operation is simple, the operation time can be saved, and the working efficiency is improved.
Preferably, the measuring through hole is arranged at the center of the protective cover.
Preferably, the protective cover is provided in an ellipsoidal shape.
Preferably, the outer surface of the protective cover is provided as a smooth surface.
Preferably, the radius of the protective cover is at least 10 times the height of the protective cover.
A method of using a pulsating pressure measurement device comprising the sub-steps of:
s1: spot welding the protective cover to the outer surface of the measuring structure;
s2: leading out the high-temperature high-pressure sensor wire exposed out of the protective cover from the pressure container, and accessing the pressure container into a measuring system;
s3: starting measurement and recording a pressure signal;
s4: and (5) finishing measurement, polishing the spot welding position, and removing the protective cover.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the pressure of the surface of the internal structure of the reactor can be measured on the premise of not damaging the measuring structure;
2. the measuring device has a simple structure, is convenient to mount and dismount, and is restored to the original state after polishing and dismantling; 3. the pressure sensor and the lead wires are protected from being washed and damaged by water flow, and the sensor can be reused.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
FIG. 1 is a top view of a pulsating pressure measurement device of the present invention;
FIG. 2 is a cross-sectional view of the pulsating pressure measurement device of the present invention;
in the drawings, the reference numerals and corresponding part names:
1. a protective cover; 2. a pressure sensor head; 3. a hollow bolt; 4. a pressure sensor wire; 5. a fixing device.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
Example 1
The embodiment provides a pulsation pressure measurement device, as shown in fig. 1, including safety cover 1 and high temperature high pressure sensor, be provided with the measurement through-hole on the safety cover 1, high temperature high pressure sensor passes through the mounting and fixes in safety cover 1, and high temperature high pressure sensor's sensitive surface runs through the measurement through-hole and with the measurement through-hole parallel and level.
In the prior art, in order to measure the surface pressure of the internal structure of the reactor, an opening for installing a sensor needs to be formed in the measuring structure, so that the structure of the internal structure of the reactor is damaged, and in the nuclear field, the structure of the internal structure of the reactor is required to be special, the service life of the internal structure of the reactor is influenced by the damage of the structure of the internal structure of the reactor, so that the use or maintenance cost is increased, and a certain risk exists in the damage of the structure of the internal structure of the reactor. Based on this, this scheme has proposed a pressure measuring device, when specifically using, need not to carry out the operation of pre-opening on the internal structure of heap, but directly install pressure measuring device in the structure surface, and the test is accomplished the back and is being dismantled the processing, consequently, can not destroy the structure of internal structure of heap, can overcome the defect that exists among the prior art. In addition, because the measuring device can be disassembled, the high-temperature high-pressure sensor can be reused, and the test cost can be effectively saved.
Specifically, the high-temperature and high-pressure sensor in this embodiment is an armored sensor with an integrated wire, that is: the high-temperature high-pressure sensor comprises a pressure sensor head 2 and a pressure sensor wire 4, wherein the front end of the pressure sensor head 2 is a sensitive surface for measuring pressure, and the rear end of the pressure sensor head 2 is connected with a stainless steel long wire (the pressure sensor wire 4); the fixing piece is a hollow bolt 3, the pressure sensor head 2 is arranged in a screw rod of the hollow bolt 3 and exposed out of the top of the screw rod, and the pressure sensor lead 4 is exposed out of the bottom of the screw rod; the inner wall of the measurement through hole is provided with threads, and the external threads of the hollow bolt 3 are connected with the internal threads of the measurement through hole, so that the pressure sensor head 2 is fixed inside the protective cover 1. In addition, through adjusting the contact depth of the hollow bolt 3 and the measuring through hole, the sensitive surface of the pressure sensor head 2 penetrates through the measuring through hole and is level with the measuring through hole, so that the accuracy of detection of the high-temperature high-pressure sensor is ensured.
Further, since the coolant may cover the outer surface of the protective cover 1 during use, in order to reduce the influence of the protective cover 1 on the primary flow field, namely: the influence of the protective cover 1 on the flow of the coolant is avoided, and the inventor discovers that the protective cover 1 is in an ellipsoidal shape and is in smooth transition after a plurality of designs and experiments, so that the influence on a flow field can be reduced; meanwhile, under the condition that the high-temperature high-pressure sensor can be placed in the protective cover, the height of the protective cover 1 is set to be smaller than 5% of the wide height of the original flow field, the radius of the protective cover 1 is set to be more than 10 times of the height of the protective cover 1, and the influence on the original flow field is basically negligible in engineering. Meanwhile, in order to enable pressure data measured by the high-temperature high-pressure sensor to be more accurate, the measuring through hole is formed in the center of the protective cover 1, so that the situation that when the high-temperature high-pressure sensor is arranged on the side face of the ellipsoidal protective cover 1, the ellipsoidal protective cover 1 blocks flowing of a coolant and a measuring result is inaccurate is avoided.
In addition, since the high-temperature and high-pressure sensor is arranged inside the protective cover 1, and the cooling water inside the protective cover 1 is basically dead water, the damage to the pressure sensor wire 4 caused by flushing the pressure sensor wire 4 by the coolant can be effectively avoided when the pressure sensor is specifically used.
In addition, in order to avoid droing because of cooling water erodees safety cover 1 for a long time and lead to cavity bolt 3 and measuring the through-hole not hard up and drop, safety cover 1 internal surface still is provided with fixing device 5 for it is fixed to be located the pressure sensor wire 4 in safety cover 1, thereby reduce the risk that drops, perhaps when droing, protect pressure sensor head 2 through fixed sensor wire 4, avoid the pressure sensor head 2 that drops to touch with the structure surface, damage pressure sensor head 2.
Further, considering that the pressure sensor wire 4 is exposed at the bottom of the hollow bolt 3, there is a certain distance between the sensor wire and the top of the protective cover 1, if the pressure sensor wire 4 is directly fixed on the top of the protective cover 1, the pressure sensor wire 4 will have a certain bending, and the bending is easy to break. Thus, in the embodiment, two fixing devices 5 are provided, as shown in fig. 1 and 2, one of which is provided at the top of the protective cover 1 and the other of which is provided at the side wall of the protective cover 1. Specifically, by arranging the fixing seat at the top, the height of the fixing seat is slightly higher than the bottom of the hollow bolt 3, so that when the pressure sensor wire 4 is fixed, the pressure sensor wire 4 cannot be bent horizontally at right angles, but the pressure sensor wire 4 is kept to be bent horizontally slowly after extending vertically, and the breakage of the bent part is avoided; meanwhile, clamping pieces are arranged on the inner side face of the protective cover 1 and the fixing base, and the pressure sensor lead 4 is fixed through the clamping pieces, so that the operation is simple, and the operation time can be saved.
The following describes an assembling method of the pulsation pressure measurement apparatus according to the present embodiment:
(1) Mounting the pressure sensor head 2 into the hollow screw of the hollow bolt 3, and enabling the pressure sensor head 2 to be flush with the top of the hollow screw;
(2) The hollow bolt 3 is fixed to the protective cover 1 through the measuring through hole, and finally the sensitive surface of the pressure sensor head 2 is flush with the measuring through hole, namely: the sensitive surface at the front end of the pressure sensor head 2 is flush with the outer surface of the ellipsoidal protective cover 1, so that the flow field is not influenced by the concave-convex phenomenon, and the accuracy of the pulse pressure measurement data is ensured;
(3) A pressure sensor wire 4 located inside the ellipsoidal protective cover 1 is fixed to the inner surface of the ellipsoidal protective cover 1.
Example 2
The embodiment provides a use method of a pulsation pressure measurement device, which comprises the following substeps:
s1: fixing the protective cover 1 on the outer surface of the measuring structure by spot welding;
s2: leading out the high-temperature high-pressure sensor wire exposed out of the protective cover from the pressure container, and accessing the pressure container into a measuring system;
s3: starting measurement and recording a pressure signal;
s4: and (5) finishing the measurement, polishing the spot welding position, and dismantling the pulsation pressure measurement device.
Among them, it is worth explaining: in the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Finally, it should be noted that: the above examples are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, but it should be understood by those skilled in the art that the present invention is not limited thereto, and that the present invention is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the corresponding technical solutions. Are intended to be encompassed within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The pulse pressure measuring device is characterized by comprising a protective cover (1) and a high-temperature high-pressure sensor, wherein a measuring through hole is formed in the protective cover (1), the high-temperature high-pressure sensor is fixed in the protective cover (1) through a fixing piece, and a sensitive surface of the high-temperature high-pressure sensor penetrates through the measuring through hole and is level with the measuring through hole; the fixing piece is a hollow bolt (3); the high-temperature high-pressure sensor is positioned in the hollow bolt (3).
2. A pulsating pressure measurement device according to claim 1, characterized in that the inner wall of the measurement through hole is provided with threads, and that the hollow bolt (3) is screwed with the measurement through hole.
3. The pulsation pressure measurement device of claim 2, wherein said high temperature and high pressure sensor is an armored sensor with integral leads.
4. The pulsation pressure measurement device according to claim 1, characterized in that a fixing device (5) is further provided in the protective cover (1), and a high-temperature high-pressure sensor wire provided in the protective cover (1) is fixed on the fixing device (5).
5. A pulsating pressure measurement device according to claim 1, characterized in that the protective cover (1) is provided as an ellipsoid.
6. A pulsating pressure measurement device according to claim 5, characterized in that the measurement through hole is provided in the centre of the protective cover (1).
7. A pulsating pressure measurement device according to claim 1, characterized in that the outer surface of the protective cover (1) is provided as a smooth surface.
8. A pulsating pressure measurement device according to claim 1, wherein the radius of the protective cover is at least 10 times the height of the protective cover.
9. Use of a pulsating pressure measurement device according to any of claims 1-8, characterized by the sub-steps of: s1: spot welding the protective cover (1) to the outer surface of the measuring structure; s2: leading out a high-temperature high-pressure sensor wire exposed out of the protective cover (1) from a pressure container, and accessing the pressure container into a measuring system; s3: starting measurement and recording a pressure signal; s4: and (3) finishing measurement, polishing the spot welding part, and removing the protective cover (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110834910.XA CN113593736B (en) | 2021-07-23 | 2021-07-23 | Pulsation pressure measuring device and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110834910.XA CN113593736B (en) | 2021-07-23 | 2021-07-23 | Pulsation pressure measuring device and application method thereof |
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| Publication Number | Publication Date |
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| CN113593736A CN113593736A (en) | 2021-11-02 |
| CN113593736B true CN113593736B (en) | 2024-01-23 |
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| CN202110834910.XA Active CN113593736B (en) | 2021-07-23 | 2021-07-23 | Pulsation pressure measuring device and application method thereof |
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| JP2007155361A (en) * | 2005-11-30 | 2007-06-21 | Continuum Dynamics Inc | System and method for determining fluctuating pressure load on component of reactor steam dome |
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| CN204988680U (en) * | 2015-09-24 | 2016-01-20 | 中国航天空气动力技术研究院 | A pressure measuring equipment for under high temperature environment |
| CN109855789A (en) * | 2019-01-10 | 2019-06-07 | 北京机械设备研究所 | It is a kind of for monitoring the sensor of underwater small aircraft surface pressing |
| CN112595366A (en) * | 2020-12-22 | 2021-04-02 | 上海电气凯士比核电泵阀有限公司 | Integrated temperature and pressure measuring device |
| CN112758348A (en) * | 2020-12-24 | 2021-05-07 | 中国飞行试验研究院 | Pressure distribution measuring device for flight test and pressure measuring belt modification method |
-
2021
- 2021-07-23 CN CN202110834910.XA patent/CN113593736B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007155361A (en) * | 2005-11-30 | 2007-06-21 | Continuum Dynamics Inc | System and method for determining fluctuating pressure load on component of reactor steam dome |
| JP2009074878A (en) * | 2007-09-20 | 2009-04-09 | Hitachi-Ge Nuclear Energy Ltd | Method for confirming integrity of drier of boiling water reactor |
| CN204988680U (en) * | 2015-09-24 | 2016-01-20 | 中国航天空气动力技术研究院 | A pressure measuring equipment for under high temperature environment |
| CN109855789A (en) * | 2019-01-10 | 2019-06-07 | 北京机械设备研究所 | It is a kind of for monitoring the sensor of underwater small aircraft surface pressing |
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| CN113593736A (en) | 2021-11-02 |
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