CN205748692U - Steam generator heat-transfer pipe refluence monitoring device - Google Patents
Steam generator heat-transfer pipe refluence monitoring device Download PDFInfo
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- CN205748692U CN205748692U CN201620702039.2U CN201620702039U CN205748692U CN 205748692 U CN205748692 U CN 205748692U CN 201620702039 U CN201620702039 U CN 201620702039U CN 205748692 U CN205748692 U CN 205748692U
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- refluence
- monitoring device
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- transfer pipe
- temperature
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Abstract
The utility model discloses steam generator heat-transfer pipe refluence monitoring device, including at least 2 refluence monitoring devices being arranged on same heat-transfer pipe, refluence monitoring device includes the base being arranged on housing exterior walls, the outer wall of base is arranged with nut, and base extends in nut away from one end of housing, base is provided with sealing member away between one end and the nut of housing, also include temperature-measuring casing, temperature-measuring casing sequentially passes through nut, sealing member, extend to after base in housing, temperature sensor it is provided with in temperature-measuring casing, temperature-measuring casing and temperature sensor extend to inside heat-transfer pipe, gap is there is between temperature sensor and heat-transfer pipe inwall.
Description
Technical field
This utility model relates to a kind of monitoring device, is used for monitoring steam generation under Natural Circulation state particularly to one
The device of device heat-transfer pipe generation refluence phenomenon, specifically steam generator heat-transfer pipe refluence monitoring device.
Background technology
Steam generator is one of most important equipment of nuclear power unit, and after there is nuclear reactor safety accident, it is normal
Residual heat removal function can be lost therewith, but improper residual heat removal system is still had a major impact by its operation characteristic.Study
Show, low-power, low discharge accident operating conditions under, steam generator portion heat-transfer pipe can occur refluence phenomenon, research
Its mechanism produced, it is believed that it has a significant impact to the Residual heat removal under accident operating conditions, but whether occur to flow backwards existing
As and which heat-transfer pipe there occurs refluence phenomenon, there is no direct experimental evidence at present, in order to monitor steam generator heat transfer
Refluence phenomenon in pipe, determine region and boundary thereof that refluence phenomenon occurs, it is necessary to develop and be specifically designed for steam generator
The monitoring device of heat-transfer pipe refluence phenomenon.
Utility model content
Main purpose of the present utility model is to provide a set of steam generator heat-transfer pipe of monitoring at low-power, low discharge
The monitoring device of the refluence phenomenon occurred under accident operating conditions, transports for steam generator heat-transfer pipe refluence phenomenon and to accident
The affecting laws research of the Residual heat removal ability under row operating mode provides experiment condition and the means on basis.
Implementation of the present utility model is as follows: steam generator heat-transfer pipe refluence monitoring device, including steam generator,
Steam generator includes housing, tube sheet, at least 1 heat-transfer pipe, and tube sheet is arranged in this housing, and housing is divided into once by tube sheet
Side body and secondary side housing, the entrance point of heat-transfer pipe and the port of export all pass tube sheet and extend to the interior intracavity of primary side housing,
Heat-transfer pipe includes bending section and 2 straight section portions, and 2 straight part are not connected to the two ends of bending section, and crooked position is in secondary side
The interior intracavity of housing, also includes at least 2 refluence monitoring devices being arranged on same heat-transfer pipe, and refluence monitoring device includes
The base being arranged on housing exterior walls, the outer wall of base is arranged with nut, and base extends in nut away from one end of housing,
Base is provided with sealing member away between one end and the nut of housing, also include temperature-measuring casing, temperature-measuring casing sequentially pass through nut,
Extend to after sealing member, base in housing, be provided with temperature sensor, temperature-measuring casing and temperature sensor in temperature-measuring casing and all prolong
Reach inside heat-transfer pipe, between temperature sensor and heat-transfer pipe inwall, there is gap.
Usually, the fluid temperature (F.T.) in steam generator heat-transfer pipe is gradually reduced along original flow direction, and is consistently greater than once
Side temperature, i.e. Tin>T1>T2>…>TN>Tout>Ttube；After there is refluence phenomenon, the fluid temperature (F.T.) edge in steam generator heat-transfer pipe
Original flow direction is gradually increasing and consistently greater than primary side temperature, i.e. Ttube<Tin<T1<T2<…<TN<Tout；Steam generator conducts heat
Pipe refluence monitoring device utilizes this reverse before and after there is refluence phenomenon of the fluid temperature (F.T.) cloth in steam generator heat-transfer pipe
Characteristic, realizes the monitoring of refluence phenomenon by the fluid temperature (F.T.) measuring heat-transfer pipe diverse location.
This utility model is detected in heat-transfer pipe by least 2 refluence monitoring devices being arranged on same heat-transfer pipe
Temperature, judge whether to there occurs refluence phenomenon according to the temperature of refluence monitoring device.
Single refluence monitoring device is made up of temperature-measuring casing, temperature sensor, base, sealing member and nut etc., thermometric cover
Pipe can use φ 3.5 × 1mm flexibility stainless steel tube, and temperature sensor can use the armoured thermocouple of φ 1mm, and sealing member can
To use cydariform nickel pad.At least to arrange 2 refluence monitoring devices on single heat-transfer pipe, general, first-selected consideration is in heat transfer
The exit that pipe enters arranges refluence monitoring device, so can significantly observe the temperature approach of 2 refluence monitoring devices, the most just
Be to say, the spacing of 2 refluence monitoring devices arranged the most remote more good, such as, when the spacing of 2 refluence monitoring devices is less,
Then may observe that temperature approach is almost nil, the most such detection mode is invalid.Further, in going out that heat-transfer pipe enters
When refluence monitoring device is set at Kou, temperature-measuring casing one end put abreast and be welded at heat-transfer pipe inwall (at typically about 30mm, can
Suitable adjustment is made with the caliber according to heat-transfer pipe), the other end of temperature-measuring casing is drawn by base, and temperature-measuring casing is through sealing
Part also compresses sealing, the now length of labelling temperature-measuring casing by nut so that operator know the deep of temperature-measuring casing insertion
Degree, the convenient insertion depth controlling temperature sensor, temperature sensor is inserted from temperature-measuring casing, owing to temperature-measuring casing spot welding is fixed
At heat-transfer pipe inwall and marked length, therefore can ensure that temperature sensor will not touch heat-transfer pipe inwall, it is ensured that measure
One be set to fluid temperature (F.T.).When arranging refluence monitoring device at bending section, temperature-measuring casing one end is axial along heat-transfer pipe straight section portion
Direction is inserted heat-transfer pipe and is welded (insertion depth of general temperature-measuring casing about 30mm) with it, and the other end of temperature-measuring casing is drawn by base
Going out, compress sealing, and the length of labelling temperature-measuring casing through sealing member and by nut, temperature sensor is inserted from temperature-measuring casing
Enter, be axially inserted into along heat-transfer pipe due to temperature-measuring casing and marked length, therefore can ensure that thermocouple will not touch heat transfer
Inside pipe wall, it is ensured that the one of measurement is set to fluid temperature (F.T.).The temperature sensor of heat-transfer pipe import and export and bending section import and export is equal
Outside nut, silver brazing is carried out, by high temperature melting at soldering, by temperature sensor from temperature-measuring casing and cydariform with temperature-measuring casing
Nickel pad is extracted out together, just can realize dismounting and the replacing of thermocouple.
This utility model is provided with 4 kinds of modes installing refluence monitoring device, i.e. four kinds temperature point arrangements, difference
For: two point form arrangement, bikini arrangement, four-point arrangement, five-point type arrangement.General thought is: two
Point type arrangement is by 2 point layout inside heat-transfer pipe is imported and exported, built-in length L >=8 ~ 10d temperature-measuring casing external diameter；Three
Point type arrangement is to add 1 measuring point being positioned at heat-transfer pipe interlude on the basis of two point form arrangement, newly-increased
Temperature sensor is arranged vertically with heat-transfer pipe；Four-point arrangement is 2 measuring points on the basis of two point form arrangement, point
It is not positioned at the curved segment import and export of heat-transfer pipe, the tangent layout of curved segment of newly-increased temperature sensor and heat-transfer pipe, built-in length L >=
8 ~ 10d temperature-measuring casing external diameter；Five-point type arrangement is to add 1 on the basis of four-point arrangement to be positioned at heat-transfer pipe
The measuring point of interlude, newly-increased temperature sensor is arranged vertically with heat-transfer pipe.
The temperature point one of refluence monitoring device is arranged in heat-transfer pipe import and export, and one is arranged in heat-transfer pipe interlude
And bending section.The former needs through primary side housing, and its temperature measuring head is fixed by the temperature-measuring casing being positioned at heat-transfer pipe inward flange；The latter
Need through secondary side housing and heat-transfer pipe；Pumpback after the temperature sensor of interlude first transmission of heat by contact inside pipe wall when mounted
The distance of 0.5 ~ 0.75d heat-transfer pipe internal diameter, the temperature sensor of bending section import and export and heat-transfer pipe dead in line；Above-mentioned layout
Ensure that temperature sensor will not touch heat-transfer pipe inwall with fixed form, it is ensured that the one of measurement is set to fluid temperature (F.T.).
Two point form arrangement is:
When the quantity of the refluence monitoring device on same heat-transfer pipe is 2, refluence monitoring device is arranged on primary side shell
On body, base is arranged on primary side housing, and 2 refluence monitoring devices are respectively import refluence monitoring device and outlet refluence prison
Survey device；The temperature-measuring casing of import refluence monitoring device inserts from the entrance point of heat-transfer pipe, and this import refluence monitoring device
Temperature-measuring casing be connected with the entrance point inwall of this heat-transfer pipe, temperature sensor the entering from heat-transfer pipe of import refluence monitoring device
Mouth end inserts；The temperature-measuring casing of outlet refluence monitoring device inserts from the port of export of heat-transfer pipe, and this outlet is flow backwards and monitored dress
The temperature-measuring casing put is connected with the port of export inwall of this heat-transfer pipe, and the temperature sensor of outlet refluence monitoring device is from heat-transfer pipe
The port of export inserts.I.e. the point layout of two point form is inside heat-transfer pipe is imported and exported, and this setup is in order to greatest extent
Strengthen the spacing of 2 refluence monitoring device diameters, so that detection data have obvious difference, it is simple to judge whether there occurs
Refluence phenomenon, this mode can only judge whether whole heat-transfer pipe there occurs refluence phenomenon.Can not detect in the middle of this refluence phenomenon
There is refluence phenomenon in certain section of region, in order to improve the precision of detection, this utility model be therefore provided with above-mentioned remaining several fall
The arrangement of stream monitoring device.
Bikini arrangement:
When the quantity of the refluence monitoring device on same heat-transfer pipe is 3,2 refluence monitoring devices are had to be arranged on once
On side body, 1 refluence monitoring device is arranged on secondary side housing, the refluence monitoring dress that 2 are arranged on primary side housing
Put respectively import refluence monitoring device and outlet refluence monitoring device；The temperature-measuring casing of import refluence monitoring device is from heat-transfer pipe
Entrance point insert, and the temperature-measuring casing of this import refluence monitoring device is connected with the entrance point inwall of this heat-transfer pipe, import
The temperature sensor of refluence monitoring device is inserted from the entrance point of heat-transfer pipe；The temperature-measuring casing of outlet refluence monitoring device is from heat transfer
The port of export of pipe inserts, and the temperature-measuring casing of this outlet refluence monitoring device is connected with the port of export inwall of this heat-transfer pipe, goes out
The temperature sensor of mouth refluence monitoring device is inserted from the port of export of heat-transfer pipe；The refluence prison that 1 is arranged on secondary side housing
Surveying device is middle refluence monitoring device, and the temperature-measuring casing of middle refluence monitoring device inserts from the midpoint of heat-transfer pipe, middle
The temperature sensor of refluence monitoring device is inserted from the midpoint of heat-transfer pipe.Bikini arrangement is at two point form arrangement
On the basis of add 1 measuring point being positioned at heat-transfer pipe interlude, i.e. add middle refluence monitoring device, newly-increased centre is fallen
The temperature sensor of stream monitoring device is arranged vertically with heat-transfer pipe；It can be seen that middle refluence monitoring device can be measured to pass
The temperature of heat pipe intermediate point is vertical, and heat-transfer pipe is divided into 2 detection sections, can be from the detection number of above-mentioned 3 refluence monitoring devices
According to it can be seen that the refluence situation of whole heat-transfer pipe, say, that can measure and whether draw the heat-transfer pipe in half territory
Refluence situation occurs.
Four-point arrangement:
When the quantity of the refluence monitoring device on same heat-transfer pipe is 4,2 refluence monitoring devices are had to be arranged on once
On side body, 2 refluence monitoring devices are arranged on secondary side housing, the refluence monitoring dress that 2 are arranged on primary side housing
Put respectively import refluence monitoring device and outlet refluence monitoring device；The temperature-measuring casing of import refluence monitoring device is from heat-transfer pipe
Entrance point insert, and the temperature-measuring casing of this import refluence monitoring device is connected with the entrance point inwall of this heat-transfer pipe, import
The temperature sensor of refluence monitoring device is inserted from the entrance point of heat-transfer pipe；The temperature-measuring casing of outlet refluence monitoring device is from heat transfer
The port of export of pipe inserts, and the temperature-measuring casing of this outlet refluence monitoring device is connected with the port of export inwall of this heat-transfer pipe, goes out
The temperature sensor of mouth refluence monitoring device is inserted from the port of export of heat-transfer pipe；The refluence prison that 2 are arranged on secondary side housing
Surveying device is bending section import refluence monitoring device and bending section outlet refluence monitoring device, and the bending section of heat-transfer pipe includes connecting
The entrance point in one straight section portion and connect a straight section portion the port of export, the temperature-measuring casing of bending section import refluence monitoring device from
The entrance point of bending section inserts, and the temperature sensor of bending section import refluence monitoring device is inserted from the entrance point of bending section；Curved
The temperature-measuring casing of pars convoluta outlet refluence monitoring device inserts from the port of export of bending section, the temperature of bending section outlet refluence monitoring device
Degree sensor inserts from the port of export of bending section.
It can be seen that four-point arrangement is to add 2 measuring points on the basis of two point form arrangement, i.e. increase
Bending section import refluence monitoring device and bending section outlet refluence monitoring device, these 2 measuring points lay respectively at the curved of heat-transfer pipe
The tangent layout of bending section of the entrance point of pars convoluta and the port of export, newly-increased temperature sensor and heat-transfer pipe, general built-in length L >=
8 ~ 10d temperature-measuring casing external diameter；It can be seen that the program have employed 4 refluence monitoring devices, whole heat-transfer pipe is divided into 3
Region, i.e. 2 straight section portions and 1 bending section, can be flow backwards supervised by bending section import refluence monitoring device and bending section outlet
Survey device analysis and show whether this bending section there occurs refluence phenomenon, refluence monitoring device can also be exported by bending section simultaneously
Show whether the straight section portion of exit region there occurs refluence phenomenon with outlet refluence monitoring device analysis, simultaneously can also be by curved
Pars convoluta import refluence monitoring device and import refluence monitoring device analysis show whether the straight section portion of entry zone there occurs refluence
Phenomenon, such design makes the precision more precision of detection.
Five-point type arrangement:
When the quantity of the refluence monitoring device on same heat-transfer pipe is 5,2 refluence monitoring devices are had to be arranged on once
On side body, 3 refluence monitoring devices are arranged on secondary side housing, the refluence monitoring dress that 2 are arranged on primary side housing
Put respectively import refluence monitoring device and outlet refluence monitoring device；The temperature-measuring casing of import refluence monitoring device is from heat-transfer pipe
Entrance point insert, and the temperature-measuring casing of this import refluence monitoring device is connected with the entrance point inwall of this heat-transfer pipe, import
The temperature sensor of refluence monitoring device is inserted from the entrance point of heat-transfer pipe；The temperature-measuring casing of outlet refluence monitoring device is from heat transfer
The port of export of pipe inserts, and the temperature-measuring casing of this outlet refluence monitoring device is connected with the port of export inwall of this heat-transfer pipe, goes out
The temperature sensor of mouth refluence monitoring device is inserted from the port of export of heat-transfer pipe；The refluence prison that 3 are arranged on secondary side housing
Surveying device is bending section import refluence monitoring device and bending section outlet refluence monitoring device and middle refluence monitoring device, heat transfer
The bending section of pipe includes the entrance point connecting a straight section portion and the port of export connecting a straight section portion, and bending section import is flow backwards and supervised
The temperature-measuring casing surveying device inserts from the entrance point of bending section, and the temperature sensor of bending section import refluence monitoring device is from bending
The entrance point in portion inserts；The temperature-measuring casing of bending section outlet refluence monitoring device inserts from the port of export of bending section, and bending section goes out
The temperature sensor of mouth refluence monitoring device is inserted from the port of export of bending section；The temperature-measuring casing of middle refluence monitoring device is from biography
The midpoint of heat pipe is inserted, and the temperature sensor of middle refluence monitoring device is inserted from the midpoint of heat-transfer pipe.Five-point type is arranged
Scheme is to add 1 measuring point being positioned at heat-transfer pipe interlude on the basis of four-point arrangement, i.e. adds in one
Between refluence monitoring device, the temperature sensor of this middle refluence monitoring device is arranged vertically with heat-transfer pipe.It can be seen that the program
Have employed 5 refluence monitoring devices, whole heat-transfer pipe is divided into 4 regions, i.e. 2 straight section portions and 2 bending sections, Ke Yitong
Cross bending section import refluence monitoring device and bending section outlet refluence monitoring device analysis show whether this bending section there occurs down
Flow phenomenon, can also draw exit region by bending section outlet refluence monitoring device and outlet refluence monitoring device analysis simultaneously
Straight section portion whether there occurs refluence phenomenon, can also be flow backwards monitoring by bending section import refluence monitoring device and import simultaneously
Device analysis show whether the straight section portion of entry zone there occurs refluence phenomenon, it is also possible to judge 1/2nd bending section regions
Refluence situation, such design makes the precision more precision of detection.
The temperature-measuring casing of steam generator heat-transfer pipe refluence monitoring device first uses welding manner with heat-transfer pipe, then with temperature
Sensor uses soldering, finally realizes alive connection with housing by sealing member, it is simple to the dismounting of temperature sensor and replacing.
In this system, refluence monitoring device is arranged on different heat transfer pipe, the refluence phenomenon of monitoring different heat transfer pipe.Depend on
It is configured according to the length of heat-transfer pipe, at least includes the heat-transfer pipe P of greatest lengthmax, the heat-transfer pipe P of minimum lengthminIn and
Between the heat-transfer pipe P of lengthiEtc. some heat-transfer pipes, and L (Pmax)>L(P1)>L(P2)>…L(PN)>L(Pmin), such as: PmaxWithout falling
Flow phenomenon, Pi-1Phenomenon without refluence, PiThere are refluence phenomenon, PminHave refluence phenomenon, then steam generator heat-transfer pipe occurs to flow backwards now
The area boundary of elephant is Pi-1And PiBetween heat-transfer pipe.I.e. when the quantity of heat-transfer pipe is multiple, at least heat transfer of greatest length
Pipe PmaxHeat-transfer pipe P with intermediate lengthiHeat-transfer pipe P with minimum lengthminIt is fitted with refluence monitoring device.
Described temperature sensor is armoured thermocouple.
Sealing member is cydariform nickel pad.
Temperature-measuring casing is flexible stainless steel tube.
Temperature-measuring casing uses welding manner to be connected with the join domain of heat-transfer pipe.
The utility model has the advantage of: the utility model proposes the fluid temperature (F.T.) utilized in steam generator heat-transfer pipe
The principle of the cloth this reversal characteristics monitoring refluence phenomenon before and after there is refluence phenomenon and implementation method.Its temperature point can be adopted
With " two point form " or " bikini " or " four-point " or " five-point type " arrangement, it is possible to realize the refluence phenomenon prison of different accuracy
Survey.Steam generator heat-transfer pipe refluence monitoring device proposes respective fixing for vertical and tangent layout two class arrangement
Scheme, it is ensured that temperature sensor will not touch heat-transfer pipe inwall, it is ensured that the one of measurement is set to fluid temperature (F.T.).Steam generator passes
The connected mode of heat pipe refluence monitoring device is versatile and flexible, has both ensured the good sealing property under High Temperature High Pressure, the most readily accessible with
Change temperature sensor.Steam generator heat-transfer pipe refluence monitoring device can monitor the refluence phenomenon of different heat transfer pipe, and according to
The refluence phenomenon monitored and the determination methods that the utility model proposes determine the district of steam generator heat-transfer pipe generation refluence phenomenon
Domain border.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view that existing heat-transfer pipe is arranged on tube sheet.
Fig. 2 is the front schematic view of Fig. 1.
Fig. 3 is the side schematic view of Fig. 1.
Fig. 4 is the vertical view face schematic diagram of Fig. 1.
Fig. 5 is the vertical view face schematic diagram after refluence monitoring device is installed to Fig. 1.
Fig. 6 is the schematic diagram of embodiment 2.
Fig. 7 is the schematic diagram of embodiment 3.
Fig. 8 is the schematic diagram of embodiment 4.
Fig. 9 is the schematic diagram of embodiment 5.
Figure 10 is the schematic diagram of single refluence monitoring device.
Figure 11 is that temperature-measuring casing inserts the schematic diagram of heat-transfer pipe with tangential direction.
Figure 12 is that temperature-measuring casing inserts the schematic diagram of heat-transfer pipe from entrance point or port of export direction.
Figure 13 is the schematic diagram that temperature-measuring casing heat-transfer pipe zone line inserts heat-transfer pipe.
Reference in figure is expressed as: 1, secondary side housing；2, heat-transfer pipe；3, refluence monitoring device；4, temperature
Sensor；5, temperature-measuring casing；6, nut；7, sealing member；8, base；9, tube sheet；10, primary side housing.
Detailed description of the invention
Embodiment one
As shown in figure 1 to figure 13.
Steam generator heat-transfer pipe refluence monitoring device, including steam generator, steam generator include housing, tube sheet 9,
At least 1 heat-transfer pipe 2, tube sheet 9 is arranged in this housing, and housing is divided into primary side housing 10 and secondary side housing by tube sheet 9
1, the entrance point of heat-transfer pipe 2 and the port of export all pass tube sheet 9 and extend to the interior intracavity of primary side housing 10, and heat-transfer pipe 2 includes curved
Pars convoluta and 2 straight section portions, 2 straight part are not connected to the two ends of bending section, and crooked position is in the inner chamber of secondary side housing 1
In, also include at least 2 refluence monitoring devices being arranged on same heat-transfer pipe 2, as shown in Figure 10, refluence monitoring device bag
Including the base 8 being arranged on housing exterior walls, the outer wall of base 8 is arranged with nut 6, and base 8 extends to away from one end of housing
In nut 6, base 8 is provided with sealing member 7 away between one end and the nut 6 of housing, also includes temperature-measuring casing 5, temperature-measuring casing 5
Extend in housing after sequentially passing through nut 6, sealing member 7, base 8, in temperature-measuring casing 5, be provided with temperature sensor 4, thermometric cover
It is internal that pipe 5 and temperature sensor 4 extend to heat-transfer pipe 2, there is gap between temperature sensor 4 and heat-transfer pipe 2 inwall.
Usually, the fluid temperature (F.T.) in steam generator heat-transfer pipe is gradually reduced along original flow direction, and is consistently greater than once
Side temperature, i.e. Tin>T1>T2>…>TN>Tout>Ttube；After there is refluence phenomenon, the fluid temperature (F.T.) edge in steam generator heat-transfer pipe
Original flow direction is gradually increasing and consistently greater than primary side temperature, i.e. Ttube<Tin<T1<T2<…<TN<Tout；Steam generator conducts heat
Pipe refluence monitoring device utilizes this reverse before and after there is refluence phenomenon of the fluid temperature (F.T.) cloth in steam generator heat-transfer pipe
Characteristic, realizes the monitoring of refluence phenomenon by the fluid temperature (F.T.) measuring heat-transfer pipe diverse location.
This utility model detects heat-transfer pipe by least 2 refluence monitoring devices being arranged on same heat-transfer pipe 2
Interior temperature, judges whether to there occurs refluence phenomenon according to the temperature of refluence monitoring device.
Single refluence monitoring device is made up of temperature-measuring casing, temperature sensor, base, sealing member and nut etc., thermometric cover
Pipe can use φ 3.5 × 1mm flexibility stainless steel tube, and temperature sensor can use the armoured thermocouple of φ 1mm, and sealing member can
To use cydariform nickel pad.At least to arrange 2 refluence monitoring devices on single heat-transfer pipe, general, first-selected consideration is in heat transfer
The exit that pipe enters arranges refluence monitoring device, so can significantly observe the temperature approach of 2 refluence monitoring devices, the most just
Be to say, the spacing of 2 refluence monitoring devices arranged the most remote more good, such as, when the spacing of 2 refluence monitoring devices is less,
Then may observe that temperature approach is almost nil, the most such detection mode is invalid.Further, in going out that heat-transfer pipe enters
When refluence monitoring device is set at Kou, temperature-measuring casing one end put abreast and be welded at heat-transfer pipe inwall (at typically about 30mm, can
Suitable adjustment is made with the caliber according to heat-transfer pipe), the other end of temperature-measuring casing is drawn by base, and temperature-measuring casing is through sealing
Part also compresses sealing, the now length of labelling temperature-measuring casing by nut so that operator know the deep of temperature-measuring casing insertion
Degree, the convenient insertion depth controlling temperature sensor, temperature sensor is inserted from temperature-measuring casing, owing to temperature-measuring casing spot welding is fixed
At heat-transfer pipe inwall and marked length, therefore can ensure that temperature sensor will not touch heat-transfer pipe inwall, it is ensured that measure
One be set to fluid temperature (F.T.).When arranging refluence monitoring device at bending section, temperature-measuring casing one end is axial along heat-transfer pipe straight section portion
Direction is inserted heat-transfer pipe and is welded (insertion depth of general temperature-measuring casing about 30mm) with it, and the other end of temperature-measuring casing is drawn by base
Going out, compress sealing, and the length of labelling temperature-measuring casing through sealing member and by nut, temperature sensor is inserted from temperature-measuring casing
Enter, be axially inserted into along heat-transfer pipe due to temperature-measuring casing and marked length, therefore can ensure that thermocouple will not touch heat transfer
Inside pipe wall, it is ensured that the one of measurement is set to fluid temperature (F.T.).The temperature sensor of heat-transfer pipe import and export and bending section import and export is equal
Outside nut, silver brazing is carried out, by high temperature melting at soldering, by temperature sensor from temperature-measuring casing and cydariform with temperature-measuring casing
Nickel pad is extracted out together, just can realize dismounting and the replacing of thermocouple.
This utility model is provided with 4 kinds of modes installing refluence monitoring device, i.e. four kinds temperature point arrangements, difference
For: two point form arrangement, bikini arrangement, four-point arrangement, five-point type arrangement.General thought is: two
Point type arrangement is by 2 point layout inside heat-transfer pipe is imported and exported, built-in length L >=8 ~ 10d temperature-measuring casing external diameter；Three
Point type arrangement is to add 1 measuring point being positioned at heat-transfer pipe interlude on the basis of two point form arrangement, newly-increased
Temperature sensor is arranged vertically with heat-transfer pipe；Four-point arrangement is 2 measuring points on the basis of two point form arrangement, point
It is not positioned at the curved segment import and export of heat-transfer pipe, the tangent layout of curved segment of newly-increased temperature sensor and heat-transfer pipe, built-in length L >=
8 ~ 10d temperature-measuring casing external diameter；Five-point type arrangement is to add 1 on the basis of four-point arrangement to be positioned at heat-transfer pipe
The measuring point of interlude, newly-increased temperature sensor is arranged vertically with heat-transfer pipe.
The temperature point one of refluence monitoring device is arranged in heat-transfer pipe import and export, and one is arranged in heat-transfer pipe interlude
And bending section.The former needs through primary side housing, and its temperature measuring head is fixed by the temperature-measuring casing being positioned at heat-transfer pipe inward flange；The latter
Need through secondary side housing and heat-transfer pipe；Pumpback after the temperature sensor of interlude first transmission of heat by contact inside pipe wall when mounted
The distance of 0.5 ~ 0.75d heat-transfer pipe internal diameter, the temperature sensor of bending section import and export and heat-transfer pipe dead in line；Above-mentioned layout
Ensure that temperature sensor will not touch heat-transfer pipe inwall with fixed form, it is ensured that the one of measurement is set to fluid temperature (F.T.).
Embodiment two
As shown in figure 1 to figure 13.
The present embodiment is with the difference of embodiment one: two point form arrangement is:
When the quantity of the refluence monitoring device on same heat-transfer pipe 2 is 2, refluence monitoring device is arranged on primary side shell
On body 10, base 8 is arranged on primary side housing 10, and 2 refluence monitoring devices are respectively import refluence monitoring device and outlet
Refluence monitoring device；The temperature-measuring casing 5 of import refluence monitoring device inserts from the entrance point of heat-transfer pipe 2, and this import is flow backwards
The temperature-measuring casing 5 of monitoring device is connected with the entrance point inwall of this heat-transfer pipe 2, the temperature sensor 4 of import refluence monitoring device
Insert from the entrance point of heat-transfer pipe 2；The temperature-measuring casing 5 of outlet refluence monitoring device inserts from the port of export of heat-transfer pipe 2, and should
The temperature-measuring casing 5 of outlet refluence monitoring device is connected with the port of export inwall of this heat-transfer pipe 2, the temperature of outlet refluence monitoring device
Sensor 4 inserts from the port of export of heat-transfer pipe 2.I.e. the point layout of two point form is inside heat-transfer pipe is imported and exported, this set side
Formula is the spacing in order to strengthen 2 refluence monitoring device diameters to greatest extent, so that detection data have obvious difference,
It is easy to judge whether to there occurs that refluence phenomenon, this mode can only judge whether whole heat-transfer pipe 2 there occurs refluence phenomenon.Can not
Detecting certain section of region in the middle of this refluence phenomenon and refluence phenomenon occurs, in order to improve the precision of detection, therefore this utility model is arranged
There is the arrangement of remaining several refluence monitoring device above-mentioned.
Embodiment three
As shown in figure 1 to figure 13.
The present embodiment is with the difference of embodiment one: bikini arrangement:
When the quantity of the refluence monitoring device on same heat-transfer pipe 2 is 3,2 refluence monitoring devices are had to be arranged on one
On secondary side body 10,1 refluence monitoring device is arranged on secondary side housing 1,2 refluences being arranged on primary side housing 10
Monitoring device is respectively import refluence monitoring device and outlet refluence monitoring device；The temperature-measuring casing 5 of import refluence monitoring device
Insert from the entrance point of heat-transfer pipe 2, and in the entrance point of the temperature-measuring casing 5 of this import refluence monitoring device and this heat-transfer pipe 2
Wall connects, and the temperature sensor 4 of import refluence monitoring device is inserted from the entrance point of heat-transfer pipe 2；Outlet refluence monitoring device
Temperature-measuring casing 5 inserts from the port of export of heat-transfer pipe 2, and the temperature-measuring casing 5 of this outlet refluence monitoring device and this heat-transfer pipe 2
Port of export inwall connects, and the temperature sensor 4 of outlet refluence monitoring device is inserted from the port of export of heat-transfer pipe 2；1 is arranged on two
Refluence monitoring device on secondary side body 1 is middle refluence monitoring device, and the temperature-measuring casing 5 of middle refluence monitoring device is from heat transfer
The midpoint of pipe 2 is inserted, and the temperature sensor 4 of middle refluence monitoring device is inserted from the midpoint of heat-transfer pipe 2.Bikini is arranged
Scheme is to add 1 measuring point being positioned at heat-transfer pipe interlude on the basis of two point form arrangement, i.e. adds centre and falls
Stream monitoring device, the temperature sensor of newly-increased middle refluence monitoring device is arranged vertically with heat-transfer pipe；It can be seen that centre is fallen
The temperature that stream monitoring device can be measured to heat-transfer pipe intermediate point is vertical, and heat-transfer pipe is divided into 2 detection sections, can be from above-mentioned 3
The detection data of individual refluence monitoring device are it can be seen that the refluence situation of whole heat-transfer pipe, say, that can measure and draw two
Whether the heat-transfer pipe in/mono-region there is refluence situation.
Embodiment four
As shown in figure 1 to figure 13.
The present embodiment is with the difference of embodiment one: four-point arrangement:
When the quantity of the refluence monitoring device on same heat-transfer pipe 2 is 4,2 refluence monitoring devices are had to be arranged on one
On secondary side body 10,2 refluence monitoring devices are arranged on secondary side housing 1,2 refluences being arranged on primary side housing 10
Monitoring device is respectively import refluence monitoring device and outlet refluence monitoring device；The temperature-measuring casing 5 of import refluence monitoring device
Insert from the entrance point of heat-transfer pipe 2, and in the entrance point of the temperature-measuring casing 5 of this import refluence monitoring device and this heat-transfer pipe 2
Wall connects, and the temperature sensor 4 of import refluence monitoring device is inserted from the entrance point of heat-transfer pipe 2；Outlet refluence monitoring device
Temperature-measuring casing 5 inserts from the port of export of heat-transfer pipe 2, and the temperature-measuring casing 5 of this outlet refluence monitoring device and this heat-transfer pipe 2
Port of export inwall connects, and the temperature sensor 4 of outlet refluence monitoring device is inserted from the port of export of heat-transfer pipe 2；2 are arranged on two
Refluence monitoring device on secondary side body 1 is bending section import refluence monitoring device and bending section outlet refluence monitoring device, passes
The bending section of heat pipe 2 includes the entrance point connecting a straight section portion and the port of export connecting a straight section portion, and bending section import is fallen
The temperature-measuring casing 5 of stream monitoring device inserts from the entrance point of bending section, the temperature sensor 4 of bending section import refluence monitoring device
Insert from the entrance point of bending section；The temperature-measuring casing 5 of bending section outlet refluence monitoring device inserts from the port of export of bending section, curved
The temperature sensor 4 of pars convoluta outlet refluence monitoring device is inserted from the port of export of bending section.
It can be seen that four-point arrangement is to add 2 measuring points on the basis of two point form arrangement, i.e. increase
Bending section import refluence monitoring device and bending section outlet refluence monitoring device, these 2 measuring points lay respectively at the curved of heat-transfer pipe
The tangent layout of bending section of the entrance point of pars convoluta and the port of export, newly-increased temperature sensor and heat-transfer pipe, general built-in length L >=
8 ~ 10d temperature-measuring casing external diameter；It can be seen that the program have employed 4 refluence monitoring devices, whole heat-transfer pipe is divided into 3
Region, i.e. 2 straight section portions and 1 bending section, can be flow backwards supervised by bending section import refluence monitoring device and bending section outlet
Survey device analysis and show whether this bending section there occurs refluence phenomenon, refluence monitoring device can also be exported by bending section simultaneously
Show whether the straight section portion of exit region there occurs refluence phenomenon with outlet refluence monitoring device analysis, simultaneously can also be by curved
Pars convoluta import refluence monitoring device and import refluence monitoring device analysis show whether the straight section portion of entry zone there occurs refluence
Phenomenon, such design makes the precision more precision of detection.
Embodiment five
As shown in figure 1 to figure 13.
The present embodiment is with the difference of embodiment one: five-point type arrangement:
When the quantity of the refluence monitoring device on same heat-transfer pipe 2 is 5,2 refluence monitoring devices are had to be arranged on one
On secondary side body 10,3 refluence monitoring devices are arranged on secondary side housing 1,2 refluences being arranged on primary side housing 10
Monitoring device is respectively import refluence monitoring device and outlet refluence monitoring device；The temperature-measuring casing 5 of import refluence monitoring device
Insert from the entrance point of heat-transfer pipe 2, and in the entrance point of the temperature-measuring casing 5 of this import refluence monitoring device and this heat-transfer pipe 2
Wall connects, and the temperature sensor 4 of import refluence monitoring device is inserted from the entrance point of heat-transfer pipe 2；Outlet refluence monitoring device
Temperature-measuring casing 5 inserts from the port of export of heat-transfer pipe 2, and the temperature-measuring casing 5 of this outlet refluence monitoring device and this heat-transfer pipe 2
Port of export inwall connects, and the temperature sensor 4 of outlet refluence monitoring device is inserted from the port of export of heat-transfer pipe 2；3 are arranged on two
Refluence monitoring device on secondary side body 1 be bending section import refluence monitoring device and bending section outlet refluence monitoring device and in
Between refluence monitoring device, the bending section of heat-transfer pipe 2 includes connecting the entrance point in a straight section portion and connects going out of a straight section portion
Mouth end, the temperature-measuring casing 5 of bending section import refluence monitoring device inserts from the entrance point of bending section, and bending section import is flow backwards and monitored
The temperature sensor 4 of device is inserted from the entrance point of bending section；The temperature-measuring casing 5 of bending section outlet refluence monitoring device is from bending
The port of export in portion inserts, and the temperature sensor 4 of bending section outlet refluence monitoring device is inserted from the port of export of bending section；Centre is fallen
The temperature-measuring casing 5 of stream monitoring device inserts from the midpoint of heat-transfer pipe 2, and the temperature sensor 4 of middle refluence monitoring device is from biography
The midpoint of heat pipe 2 is inserted.Five-point type arrangement is to add 1 on the basis of four-point arrangement to be positioned at heat-transfer pipe
The measuring point of interlude, i.e. adds a middle refluence monitoring device, the temperature sensor of this middle refluence monitoring device and biography
Heat pipe is arranged vertically.It can be seen that the program have employed 5 refluence monitoring devices, whole heat-transfer pipe is divided into 4 regions,
I.e. 2 straight section portions and 2 bending sections, can be by bending section import refluence monitoring device and bending section outlet refluence monitoring device
Analysis show whether this bending section there occurs refluence phenomenon, simultaneously can also be by bending section outlet refluence monitoring device and outlet
Refluence monitoring device analysis show whether the straight section portion of exit region there occurs refluence phenomenon, can also be entered by bending section simultaneously
Mouth refluence monitoring device and import refluence monitoring device analysis show whether the straight section portion of entry zone there occurs refluence phenomenon, also
May determine that the refluence situation in 1/2nd bending section regions, such design makes the precision more precision of detection.
The temperature-measuring casing of steam generator heat-transfer pipe refluence monitoring device first uses welding manner with heat-transfer pipe, then with temperature
Sensor uses soldering, finally realizes alive connection with housing by sealing member, it is simple to the dismounting of temperature sensor and replacing.
In this system, refluence monitoring device is arranged on different heat transfer pipe, the refluence phenomenon of monitoring different heat transfer pipe.Depend on
It is configured according to the length of heat-transfer pipe, at least includes the heat-transfer pipe P of greatest lengthmax, the heat-transfer pipe P of minimum lengthminIn and
Between the heat-transfer pipe P of lengthiEtc. some heat-transfer pipes, and L (Pmax)>L(P1)>L(P2)>…L(PN)>L(Pmin), such as: PmaxWithout falling
Flow phenomenon, Pi-1Phenomenon without refluence, PiThere are refluence phenomenon, PminHave refluence phenomenon, then steam generator heat-transfer pipe occurs to flow backwards now
The area boundary of elephant is Pi-1And PiBetween heat-transfer pipe.I.e. when the quantity of heat-transfer pipe 2 is multiple, at least biography of greatest length
Heat pipe PmaxHeat-transfer pipe P with intermediate lengthiHeat-transfer pipe P with minimum lengthminIt is fitted with refluence monitoring device.
Described temperature sensor 4 is armoured thermocouple.
Sealing member is cydariform nickel pad.
Temperature-measuring casing is flexible stainless steel tube.
Temperature-measuring casing uses welding manner to be connected with the join domain of heat-transfer pipe 2.
As it has been described above, then can well realize this utility model.
Claims (10)
1. steam generator heat-transfer pipe refluence monitoring device, including steam generator, steam generator include housing, tube sheet (9),
At least 1 heat-transfer pipe (2), tube sheet (9) is arranged in this housing, and housing is divided into primary side housing (10) and two by tube sheet (9)
Secondary side body (1), the entrance point of heat-transfer pipe (2) and the port of export all pass tube sheet (9) and extend to the inner chamber of primary side housing (10)
In, heat-transfer pipe (2) includes bending section and 2 straight section portions, and 2 straight part are not connected to the two ends of bending section, crooked position in
The interior intracavity of secondary side housing (1), it is characterised in that: also include at least 2 refluence prisons being arranged on same heat-transfer pipe (2)
Surveying device, refluence monitoring device includes the base (8) being arranged on housing exterior walls, and the outer wall of base (8) is arranged with nut (6),
And base (8) extends in nut (6) away from one end of housing, base (8) is away from setting between one end and the nut (6) of housing
There is sealing member (7), after also including that temperature-measuring casing (5), temperature-measuring casing (5) sequentially pass through nut (6), sealing member (7), base (8)
Extend in housing, be provided with temperature sensor (4), temperature-measuring casing (5) and temperature sensor (4) in temperature-measuring casing (5) and all prolong
Reach heat-transfer pipe (2) internal, between temperature sensor (4) and heat-transfer pipe (2) inwall, there is gap.
Steam generator heat-transfer pipe refluence monitoring device the most according to claim 1, it is characterised in that: when same heat transfer
When the quantity of the refluence monitoring device on pipe (2) is 2, refluence monitoring device is arranged on primary side housing (10), and base (8) is pacified
Being contained on primary side housing (10), 2 refluence monitoring devices are respectively import refluence monitoring device and outlet refluence monitoring device；
The temperature-measuring casing (5) of import refluence monitoring device inserts from the entrance point of heat-transfer pipe (2), and this import refluence monitoring device
Temperature-measuring casing (5) is connected with the entrance point inwall of this heat-transfer pipe (2), and the temperature sensor (4) of import refluence monitoring device is from biography
The entrance point of heat pipe (2) inserts；The temperature-measuring casing (5) of outlet refluence monitoring device inserts from the port of export of heat-transfer pipe (2), and
The temperature-measuring casing (5) of this outlet refluence monitoring device is connected with the port of export inwall of this heat-transfer pipe (2), exports refluence monitoring device
Temperature sensor (4) insert from the port of export of heat-transfer pipe (2).
Steam generator heat-transfer pipe refluence monitoring device the most according to claim 1, it is characterised in that: when same heat transfer
When the quantity of the refluence monitoring device on pipe (2) is 3,2 refluence monitoring devices are had to be arranged on primary side housing (10), 1
Refluence monitoring device is arranged on secondary side housing (1), and the refluence monitoring device that 2 are arranged on primary side housing (10) is respectively
For import refluence monitoring device and outlet refluence monitoring device；The temperature-measuring casing (5) of import refluence monitoring device is from heat-transfer pipe (2)
Entrance point insert, and the entrance point inwall of the temperature-measuring casing (5) of this import refluence monitoring device and this heat-transfer pipe (2) is even
Connecing, the temperature sensor (4) of import refluence monitoring device is inserted from the entrance point of heat-transfer pipe (2)；Outlet refluence monitoring device
Temperature-measuring casing (5) inserts from the port of export of heat-transfer pipe (2), and the temperature-measuring casing (5) of this outlet refluence monitoring device and this biography
The port of export inwall of heat pipe (2) connects, and the temperature sensor (4) of outlet refluence monitoring device is inserted from the port of export of heat-transfer pipe (2)
Enter；1 refluence monitoring device being arranged on secondary side housing (1) is middle refluence monitoring device, middle refluence monitoring device
Temperature-measuring casing (5) insert from the midpoint of heat-transfer pipe (2), the temperature sensor (4) of middle refluence monitoring device is from heat-transfer pipe
(2) midpoint is inserted.
Steam generator heat-transfer pipe refluence monitoring device the most according to claim 1, it is characterised in that: when same heat transfer
When the quantity of the refluence monitoring device on pipe (2) is 4,2 refluence monitoring devices are had to be arranged on primary side housing (10), 2
Refluence monitoring device is arranged on secondary side housing (1), and the refluence monitoring device that 2 are arranged on primary side housing (10) is respectively
For import refluence monitoring device and outlet refluence monitoring device；The temperature-measuring casing (5) of import refluence monitoring device is from heat-transfer pipe (2)
Entrance point insert, and the entrance point inwall of the temperature-measuring casing (5) of this import refluence monitoring device and this heat-transfer pipe (2) is even
Connecing, the temperature sensor (4) of import refluence monitoring device is inserted from the entrance point of heat-transfer pipe (2)；Outlet refluence monitoring device
Temperature-measuring casing (5) inserts from the port of export of heat-transfer pipe (2), and the temperature-measuring casing (5) of this outlet refluence monitoring device and this biography
The port of export inwall of heat pipe (2) connects, and the temperature sensor (4) of outlet refluence monitoring device is inserted from the port of export of heat-transfer pipe (2)
Enter；2 refluence monitoring devices being arranged on secondary side housing (1) are bending section import refluence monitoring device and bending section outlet
Refluence monitoring device, the bending section of heat-transfer pipe (2) includes the entrance point connecting a straight section portion and connects going out of a straight section portion
Mouth end, the temperature-measuring casing (5) of bending section import refluence monitoring device inserts from the entrance point of bending section, and bending section import is flow backwards and supervised
The temperature sensor (4) surveying device is inserted from the entrance point of bending section；The temperature-measuring casing (5) of bending section outlet refluence monitoring device
Inserting from the port of export of bending section, the temperature sensor (4) of bending section outlet refluence monitoring device is inserted from the port of export of bending section
Enter.
Steam generator heat-transfer pipe refluence monitoring device the most according to claim 1, it is characterised in that: when same heat transfer
When the quantity of the refluence monitoring device on pipe (2) is 5,2 refluence monitoring devices are had to be arranged on primary side housing (10), 3
Refluence monitoring device is arranged on secondary side housing (1), and the refluence monitoring device that 2 are arranged on primary side housing (10) is respectively
For import refluence monitoring device and outlet refluence monitoring device；The temperature-measuring casing (5) of import refluence monitoring device is from heat-transfer pipe (2)
Entrance point insert, and the entrance point inwall of the temperature-measuring casing (5) of this import refluence monitoring device and this heat-transfer pipe (2) is even
Connecing, the temperature sensor (4) of import refluence monitoring device is inserted from the entrance point of heat-transfer pipe (2)；Outlet refluence monitoring device
Temperature-measuring casing (5) inserts from the port of export of heat-transfer pipe (2), and the temperature-measuring casing (5) of this outlet refluence monitoring device and this biography
The port of export inwall of heat pipe (2) connects, and the temperature sensor (4) of outlet refluence monitoring device is inserted from the port of export of heat-transfer pipe (2)
Enter；3 refluence monitoring devices being arranged on secondary side housing (1) are bending section import refluence monitoring device and bending section outlet
Refluence monitoring device and middle refluence monitoring device, entrance point that the bending section of heat-transfer pipe (2) includes connecting a straight section portion and
Connecting the port of export in a straight section portion, the temperature-measuring casing (5) of bending section import refluence monitoring device is inserted from the entrance point of bending section
Entering, the temperature sensor (4) of bending section import refluence monitoring device is inserted from the entrance point of bending section；Bending section outlet is flow backwards and is supervised
The temperature-measuring casing (5) surveying device inserts from the port of export of bending section, the temperature sensor (4) of bending section outlet refluence monitoring device
Insert from the port of export of bending section；The temperature-measuring casing (5) of middle refluence monitoring device inserts from the midpoint of heat-transfer pipe (2), in
Between the flow backwards temperature sensor (4) of monitoring device insert from the midpoint of heat-transfer pipe (2).
Steam generator heat-transfer pipe refluence monitoring device the most as claimed in any of claims 1 to 5, its feature exists
In: when the quantity of heat-transfer pipe (2) is multiple, at least heat-transfer pipe P of greatest lengthmaxHeat-transfer pipe P with intermediate lengthi?
The heat-transfer pipe P of little lengthminIt is fitted with refluence monitoring device.
Steam generator heat-transfer pipe refluence monitoring device the most as claimed in any of claims 1 to 5, its feature exists
In: described temperature sensor (4) is armoured thermocouple.
Steam generator heat-transfer pipe refluence monitoring device the most as claimed in any of claims 1 to 5, its feature exists
In: sealing member is cydariform nickel pad.
Steam generator heat-transfer pipe refluence monitoring device the most as claimed in any of claims 1 to 5, its feature exists
In: temperature-measuring casing is flexible stainless steel tube.
Steam generator heat-transfer pipe refluence monitoring device the most as claimed in any of claims 1 to 5, its feature exists
In: temperature-measuring casing uses welding manner to be connected with the join domain of heat-transfer pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620702039.2U CN205748692U (en) | 2016-07-06 | 2016-07-06 | Steam generator heat-transfer pipe refluence monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620702039.2U CN205748692U (en) | 2016-07-06 | 2016-07-06 | Steam generator heat-transfer pipe refluence monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205748692U true CN205748692U (en) | 2016-11-30 |
Family
ID=57377246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620702039.2U Withdrawn - After Issue CN205748692U (en) | 2016-07-06 | 2016-07-06 | Steam generator heat-transfer pipe refluence monitoring device |
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| CN (1) | CN205748692U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124076A (en) * | 2016-07-06 | 2016-11-16 | 中国核动力研究设计院 | Steam generator heat-transfer pipe refluence monitoring device |
-
2016
- 2016-07-06 CN CN201620702039.2U patent/CN205748692U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124076A (en) * | 2016-07-06 | 2016-11-16 | 中国核动力研究设计院 | Steam generator heat-transfer pipe refluence monitoring device |
| CN106124076B (en) * | 2016-07-06 | 2017-03-08 | 中国核动力研究设计院 | Steam generator heat-transfer pipe flows backwards monitoring device |
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