CN109611563B - Pool type low-temperature heat supply pile underwater heat insulation layer pressure relief exhaust device - Google Patents
Pool type low-temperature heat supply pile underwater heat insulation layer pressure relief exhaust device Download PDFInfo
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- CN109611563B CN109611563B CN201811653467.0A CN201811653467A CN109611563B CN 109611563 B CN109611563 B CN 109611563B CN 201811653467 A CN201811653467 A CN 201811653467A CN 109611563 B CN109611563 B CN 109611563B
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- Prior art keywords
- insulation layer
- shell
- cover plate
- heat insulation
- exhaust
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
- F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
- G21C9/004—Pressure suppression
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- High Energy & Nuclear Physics (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention relates to a pressure relief and exhaust device for an underwater heat insulation layer of a pool type low-temperature heat supply stack, which comprises a shell, a cover plate mechanism and an passive driving mechanism, wherein the cover plate mechanism is arranged on the shell; the shell is arranged on the heat insulation layer and is provided with an exhaust hole; the cover plate mechanism is mounted on the housing and is capable of opening/closing the exhaust hole under the action of the passive driving mechanism. The beneficial effects of the invention are as follows: the shell with the exhaust holes is arranged on the heat insulation layer, so that bubbles can be timely discharged, and the problem that the bubbles impact the heat insulation layer can be effectively and rapidly solved; the buoyancy difference generated by the pool water and the air cavity is utilized, and a passive vent hole switching mode is adopted, so that the reliable switching action of the vent device is ensured.
Description
Technical Field
The invention relates to the field of nuclear industry, in particular to a pressure relief and exhaust device for an underwater heat insulation layer of a pool type low-temperature heat supply pile.
Background
The heat insulating layer of the low temperature heat supply water pile pool is a flat plate structure positioned 1-3m below the water surface of the water pile pool, and the upper part of the heat insulating layer is low temperature backwater passing through the pool water purifying system. The heat insulation layer has the function of keeping the upper layer of the pool water at a relatively low temperature so as to reduce the evaporation capacity of the pool water, reduce the radiation level of a hall and facilitate the access of operators.
In the reactor operation process, the situation that the reactor core instantaneously generates bubbles can occur, a large number of bubbles upwards surge to be accumulated below the heat insulation layer, so that the heat insulation layer can bear larger pressure due to buoyancy, and the functions of heat insulation layer equipment are damaged. In order to ensure reliable functions of the heat insulation layer equipment and avoid damage caused by the enlarged stress of the heat insulation layer, a pressure relief and exhaust device is required to be arranged on the heat insulation layer so as to ensure that the structure and the functions of the heat insulation layer are intact. Such a solution is not known in the prior art.
In view of this, the present invention has been made.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the pressure relief and exhaust device for the underwater heat insulation layer of the pool type low-temperature heat supply pile, which at least can solve the problems that bubbles are accumulated below the heat insulation layer to generate pressure and damage the functions of heat insulation layer equipment.
The technical scheme of the invention is as follows:
a pressure relief and exhaust device for an underwater heat insulation layer of a pool type low-temperature heat supply pile comprises a shell, a cover plate mechanism and a passive driving mechanism; the shell is arranged on the heat insulation layer and is provided with an exhaust hole; the cover plate mechanism is mounted on the housing and is capable of opening/closing the exhaust hole under the action of the passive driving mechanism.
Further, the pool type low-temperature heat supply pile underwater heat insulation layer pressure relief exhaust device comprises a floating ball and a connecting rod mechanism; one end of the connecting rod mechanism is connected with the floating ball, and the other end of the connecting rod mechanism is connected with the cover plate mechanism; the floating ball is arranged below the shell, and can drive the cover plate mechanism through the connecting rod mechanism due to buoyancy change caused by lifting of the liquid level below the shell.
Further, the pressure relief and exhaust device for the underwater heat insulation layer of the pool type low-temperature heat supply stack comprises a cover plate capable of covering the exhaust hole and a rotating shaft; the cover plate is in driving connection with the link mechanism to rotate around the rotating shaft, so that the exhaust hole is opened/closed.
Further, in the pressure relief and exhaust device for the underwater heat insulation layer of the pool type low-temperature heat supply stack, the cover plate is downwards turned to form an annular lower edge; the exhaust hole is turned upwards to form an annular upper edge; the annular lower edge is lower than the annular upper edge when the vent hole is closed.
Further, the pressure relief and exhaust device of the underwater heat insulation layer of the pool type low-temperature heat supply stack is characterized in that the shell is higher than the heat insulation layer so as to facilitate centralized gas exhaust.
Further, in the pressure relief and exhaust device for the underwater heat insulation layer of the pool-type low-temperature heat supply stack, the top of a space formed by the shell is horizontal, and the space is sequentially reduced from the lower part to the upper part so as to be beneficial to the gas exhaust; the exhaust hole is formed in the top of the space.
Further, the pressure relief and exhaust device for the underwater heat insulation layer of the pool type low-temperature heat supply stack further comprises a guide frame; the guide frame extends from the shell to the lower part of the shell; the connecting rod mechanism passes through the guide frame; the floating ball can drive the connecting rod mechanism to move along the axial direction of the guide frame.
Further, the pressure relief and exhaust device for the underwater heat insulation layer of the pool type low-temperature heat supply stack further comprises an outer frame; the outer frame is sleeved on the outer side of the guide frame and can axially move along the guide frame along with the movement of the floating ball; the connecting rod mechanism passes through the bottom of the outer frame.
The beneficial effects of the invention are as follows:
1. the shell with the exhaust holes is arranged on the heat insulation layer, so that bubbles can be timely discharged, and the problem that the bubbles are accumulated under the heat insulation layer to increase the pressure of the heat insulation layer is effectively and rapidly solved;
2. the buoyancy difference generated by the pool water and the air cavity is utilized, and a passive vent hole switching mode is adopted, so that the reliable switching action of the vent device is ensured;
3. the vent hole on the pressure release exhaust device allows cold water to permeate into lower hot water downwards, so that convection is not formed between hot water below the heat insulation layer and cold water above the heat insulation layer;
4. the connecting rod mechanism is protected through the relative sliding between the guide frame and the outer frame, the impact received by the connecting rod mechanism can be reduced, the reliability of the driving mechanism is ensured, and the service life of the device is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a pressure relief and exhaust device (exhaust hole closed) of an underwater thermal insulation layer of a pool type low-temperature heat supply stack.
Fig. 2 is a schematic structural diagram of the pressure relief and exhaust device (vent opening) of the submerged insulating layer of the pool type low-temperature heat supply reactor of the invention.
In the drawings, 1, a heat insulation layer; 2. a housing; 3. a cover plate; 4. a connecting rod; 5. a vertical rod; 6. an outer frame; 7. a floating ball; 8. a guide frame; 9. and an exhaust hole.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1 and 2, the invention provides a pressure relief and exhaust device for an underwater heat insulation layer of a pool type low-temperature heat supply pile, which comprises a shell 2, a cover plate mechanism and an inactive driving mechanism; the shell 2 is arranged on the heat insulation layer 1 and is provided with an exhaust hole 9; the cover mechanism is mounted on the housing 2 and is capable of opening/closing the exhaust hole 9 by the passive driving mechanism. The passive vent hole 9 is adopted to open and close, so that the reliable opening and closing of the vent device is ensured.
The passive driving mechanism in the embodiment realizes the function by utilizing the buoyancy difference generated by the pool water and the air cavity. The passive driving mechanism comprises a floating ball 7 and a connecting rod mechanism; one end of the connecting rod mechanism is connected with the floating ball 7, and the other end of the connecting rod mechanism is connected with the cover plate mechanism; the floating ball 7 is disposed below the housing 2, and can drive the cover mechanism through the link mechanism due to buoyancy change caused by lifting of the liquid surface below the housing 2.
The cover plate mechanism comprises a cover plate 3 capable of covering the exhaust hole 9 and a rotating shaft; the cover plate 3 is drivingly connected to the link mechanism to rotate about the rotation shaft, thereby opening/closing the exhaust hole 9 (see fig. 2) (see fig. 1). Further, in order to ensure the heat insulation effect, the cover plate 3 is turned down to form an annular lower edge; the exhaust hole 9 is turned upwards to form an annular upper edge; when the exhaust hole is closed, the annular lower edge is lower than the annular upper edge, so that convection between upper-layer cold water and lower-layer hot water is avoided.
In addition, the housing 2 is disposed higher than the heat insulating layer 1 to facilitate concentrated gas discharge. The top of the space formed by the shell 2 is horizontal, and the space is sequentially reduced from the lower part to the upper part so as to facilitate the discharge of the gas; the vent hole 9 opens at the top of the space. Thus, the bubbles are facilitated to be concentrated to the top of the shell 2 along the inclined plane, and then are rapidly discharged.
The pressure relief and exhaust device for the underwater heat insulation layer of the pool type low-temperature heat supply stack further comprises a guide frame 8; the guide frame 8 extends from the shell 2 to the lower part of the shell 2; the link mechanism passes through the guide frame 8; the floating ball 7 can drive the link mechanism to move along the axial direction of the guide frame 8. The guide frame 8 can perform guiding and protecting functions, and needs to cooperate with the outer frame 6 or seal the bottom in other manners to avoid convection of cold and hot water inside and outside the space formed by the housing 2, preferably cooperate with the outer frame 6. The outer frame 6 is sleeved outside the guide frame 8 and can axially move along the guide frame 8 along with the movement of the floating ball 7; the link mechanism passes through the bottom of the outer frame 6. In this way, the movement of the outer frame 6 can better protect the link mechanism, so that the part of the guide mechanism extending out of the guide frame 8 is prevented from being impacted when the liquid level descends, and the size of the space formed by the shell 2 when the exhaust hole 9 is closed is increased.
In this embodiment, the link mechanism includes a link 4 and a vertical rod 5 that are connected to each other, the link 4 is connected to the cover mechanism, and the vertical rod 5 is connected to the floating ball 7; in this embodiment, a vertical rod 5 may be used to connect a plurality of connecting rods 4 to realize control of a plurality of exhaust holes 9 through a floating ball 7.
The schematic of the pressure relief vent closed condition is shown in fig. 1. When no gas is generated during the operation of the reactor, the shell 2 is filled with pool water, the pool water generates upward buoyancy to the floating ball 7, and the buoyancy is transmitted to the cover plate 3 through the outer frame 6, the vertical rod 5 and the connecting rod 4 in sequence, so that the exhaust hole 9 is in a closed state. The downward flanging annular lower edge of the cover plate 3 is lower than the upward flanging annular upper edge of the exhaust hole 9, so that convection of upper-layer cold water and lower-layer hot water can be avoided.
The open state structure of the pressure relief exhaust is shown in fig. 2. When the reactor runs and generates gas, the shell 2 locally forms an air cavity, the buoyancy of pool water of the floating ball 7 is lost, the floating ball 7 sequentially passes through the outer frame 6, the vertical rod 5 and the connecting rod 4 under the action of gravity to drive the cover plate 3 to rotate, the exhaust hole 9 is in an open state, the gas is smoothly discharged under the heat insulation layer 1, and the safety function and reliability of the heat insulation layer equipment are ensured.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (4)
1. The utility model provides a pond formula low temperature heat supply heap is insulating layer pressure release exhaust apparatus under water which characterized in that: comprises a shell (2), a cover plate mechanism and an passive driving mechanism; the shell (2) is arranged on the heat insulation layer (1) and is provided with an exhaust hole (9), and the shell (2) is higher than the heat insulation layer (1) so as to facilitate centralized exhaust of gas; the cover plate mechanism is arranged on the shell (2) and can open/close the exhaust hole (9) under the action of the passive driving mechanism;
the passive driving mechanism comprises a floating ball (7) and a connecting rod mechanism; one end of the connecting rod mechanism is connected with the floating ball (7), and the other end of the connecting rod mechanism is connected with the cover plate mechanism; the floating ball (7) is arranged below the shell (2) and can drive the cover plate mechanism through the connecting rod mechanism due to buoyancy change caused by lifting of the liquid level below the shell (2);
the cover plate mechanism comprises a cover plate (3) capable of covering the exhaust hole (9) and a rotating shaft; the cover plate (3) is in driving connection with the link mechanism to rotate around the rotating shaft, so that the exhaust hole (9) is opened/closed;
the device also comprises a guide frame (8); the guide frame (8) extends from the shell (2) to the lower part of the shell (2); the link mechanism passes through the guide frame (8); the floating ball (7) can drive the link mechanism to move along the axial direction of the guide frame (8).
2. The pool type low temperature heating pile underwater thermal insulation layer pressure relief exhaust device as claimed in claim 1, wherein: the cover plate (3) is turned down to form an annular lower edge; the exhaust hole (9) is turned up to form an annular upper edge; the annular lower edge is lower than the annular upper edge when the exhaust hole (9) is closed.
3. The pool type low temperature heating pile underwater thermal insulation layer pressure relief exhaust device as claimed in claim 1, wherein: the top of the space formed by the shell (2) is horizontal, and the space is sequentially reduced from the lower part to the upper part so as to facilitate the gas discharge; the exhaust hole (9) is arranged at the top of the space.
4. The pool type low temperature heating pile underwater thermal insulation layer pressure relief exhaust device as claimed in claim 1, wherein: also comprises an outer frame (6); the outer frame (6) is sleeved outside the guide frame (8) and can axially move along the guide frame (8) along with the movement of the floating ball (7); the link mechanism passes through the bottom of the outer frame (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811653467.0A CN109611563B (en) | 2018-12-29 | 2018-12-29 | Pool type low-temperature heat supply pile underwater heat insulation layer pressure relief exhaust device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811653467.0A CN109611563B (en) | 2018-12-29 | 2018-12-29 | Pool type low-temperature heat supply pile underwater heat insulation layer pressure relief exhaust device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109611563A CN109611563A (en) | 2019-04-12 |
| CN109611563B true CN109611563B (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811653467.0A Active CN109611563B (en) | 2018-12-29 | 2018-12-29 | Pool type low-temperature heat supply pile underwater heat insulation layer pressure relief exhaust device |
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| Country | Link |
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| CN (1) | CN109611563B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112071449B (en) * | 2020-09-08 | 2023-03-21 | 中国原子能科学研究院 | Heat insulation device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2126888Y (en) * | 1992-03-09 | 1993-02-10 | 段巍 | Automatic exhaust valve |
| CN2179496Y (en) * | 1993-11-03 | 1994-10-12 | 高文明 | Tap having pressure reflectance multi-control |
| CN2492718Y (en) * | 2001-07-03 | 2002-05-22 | 李爱仓 | Automatically controlled mechanical two-way valve for water heater watertank |
| CN2527802Y (en) * | 2001-12-10 | 2002-12-25 | 陶建新 | Float valve with ceramic sealing face |
| CN201297437Y (en) * | 2008-11-18 | 2009-08-26 | 江苏光阳动力环保设备有限公司 | Differential pressure type drainage device used in containers |
| CN201584174U (en) * | 2009-12-31 | 2010-09-15 | 中国原子能科学研究院 | Passive switch for a pool type reacting pile core and water pool |
| CN201696728U (en) * | 2010-01-15 | 2011-01-05 | 浙江沃尔达铜业有限公司 | Floating ball valve |
| CN203797115U (en) * | 2014-04-24 | 2014-08-27 | 国文波 | Floating ball lever automatic shut-off device |
| CN209494942U (en) * | 2018-12-29 | 2019-10-15 | 中国原子能科学研究院 | A kind of underwater thermal insulation layer pressure release exhaust apparatus of pool low temperature heating reactor |
-
2018
- 2018-12-29 CN CN201811653467.0A patent/CN109611563B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2126888Y (en) * | 1992-03-09 | 1993-02-10 | 段巍 | Automatic exhaust valve |
| CN2179496Y (en) * | 1993-11-03 | 1994-10-12 | 高文明 | Tap having pressure reflectance multi-control |
| CN2492718Y (en) * | 2001-07-03 | 2002-05-22 | 李爱仓 | Automatically controlled mechanical two-way valve for water heater watertank |
| CN2527802Y (en) * | 2001-12-10 | 2002-12-25 | 陶建新 | Float valve with ceramic sealing face |
| CN201297437Y (en) * | 2008-11-18 | 2009-08-26 | 江苏光阳动力环保设备有限公司 | Differential pressure type drainage device used in containers |
| CN201584174U (en) * | 2009-12-31 | 2010-09-15 | 中国原子能科学研究院 | Passive switch for a pool type reacting pile core and water pool |
| CN201696728U (en) * | 2010-01-15 | 2011-01-05 | 浙江沃尔达铜业有限公司 | Floating ball valve |
| CN203797115U (en) * | 2014-04-24 | 2014-08-27 | 国文波 | Floating ball lever automatic shut-off device |
| CN209494942U (en) * | 2018-12-29 | 2019-10-15 | 中国原子能科学研究院 | A kind of underwater thermal insulation layer pressure release exhaust apparatus of pool low temperature heating reactor |
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| CN109611563A (en) | 2019-04-12 |
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