CN113187898A - Sealing device for small penetrating piece on cavity and heat exchanger with sealing device - Google Patents
Sealing device for small penetrating piece on cavity and heat exchanger with sealing device Download PDFInfo
- Publication number
- CN113187898A CN113187898A CN202010037166.6A CN202010037166A CN113187898A CN 113187898 A CN113187898 A CN 113187898A CN 202010037166 A CN202010037166 A CN 202010037166A CN 113187898 A CN113187898 A CN 113187898A
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- cavity
- sealing
- heat exchange
- exchange tube
- hole
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- 238000007789 sealing Methods 0.000 title claims abstract description 148
- 230000000149 penetrating effect Effects 0.000 title claims abstract description 20
- 239000012530 fluid Substances 0.000 claims description 66
- 230000002093 peripheral effect Effects 0.000 claims description 21
- 238000000605 extraction Methods 0.000 claims description 19
- 230000035515 penetration Effects 0.000 claims description 9
- 238000009529 body temperature measurement Methods 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 description 15
- 230000008054 signal transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F11/00—Arrangements for sealing leaky tubes and conduits
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a sealing device for a tiny penetrating piece on a cavity and a heat exchanger with the sealing device, wherein a leading-out hole is formed on the cavity, and the sealing device comprises: a cartridge and a seal. The clamping seat is fixed on the outer side of the cavity and is in sealing connection with the outer wall of the cavity, and a sealing cavity is formed in the clamping seat; the sealing element is arranged in the sealing cavity, a leading-out channel is defined in the sealing element and is a labyrinth leading-out channel, the inlet of the leading-out channel is opposite to and communicated with the leading-out hole, and one end of the sealing element, facing the leading-out hole, is in sealing connection with the clamping seat and/or the periphery of the leading-out hole. According to the sealing device for the small penetrating piece on the cavity, the leading-out hole of the cavity can be well sealed, and meanwhile, the internal structure of the sealing device can ensure that the sealing device has good sealing performance, so that the medium cannot leak when the penetrating piece is led out from the cavity.
Description
Technical Field
The invention relates to the technical field of reactor thermal hydraulic power, in particular to a sealing device for a fine penetrating piece on a cavity and a heat exchanger with the sealing device.
Background
In the related art, it is pointed out that the temperature measurement of the fluid in the tube of a heat exchanger or other fluid pipeline is generally performed by arranging a temperature measuring device at an inlet/outlet of the heat exchange tube or at a specific point in the tube, and the measured data is difficult to reflect the overall temperature distribution in the tube, and meanwhile, the sealing device of the through hole on the wall of the general pipeline is difficult to be applied to the pipeline in the high-temperature and high-pressure environment in the tube.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, the invention proposes a sealing device for a small through-penetration on a chamber, which can seal an outlet opening in the chamber wall when the through-penetration penetrates the chamber wall.
The invention also provides a heat exchanger with the sealing device.
According to a first aspect of the present invention, a sealing device for a fine penetration piece on a cavity, the cavity having an exit hole formed thereon, the sealing device comprises: the clamping seat is fixed on the outer side of the cavity and is in sealing connection with the outer wall of the cavity, and a sealing cavity is formed in the clamping seat; the sealing element is arranged in the sealing cavity, an extraction channel is defined in the sealing element and is a labyrinth extraction channel, the inlet of the extraction channel is opposite to and communicated with the extraction hole, and one end of the sealing element facing the extraction hole is in sealing connection with the clamping seat and/or the periphery of the extraction hole.
According to the sealing device for the small penetrating piece on the cavity, the clamping seat is welded with the outer wall of the cavity, and the labyrinth leading-out channel is arranged in the sealing piece, so that when the leading-out hole is formed in the cavity, the penetrating piece penetrates through the leading-out hole and is led out through the labyrinth leading-out channel in the sealing piece, the leading-out hole of the cavity can be well sealed by the sealing device, meanwhile, the internal structure of the sealing device can ensure that the sealing device has good sealing performance, and further, the medium cannot leak when the penetrating piece is led out from the cavity.
According to some embodiments of the invention, the seal is a graphite piece.
According to some embodiments of the invention, the seal member is adapted to the shape of the seal cavity, the seal cavity having a cross-sectional dimension that increases in a direction from the exit aperture along an axis of the exit aperture and away from the exit aperture.
Further, the sealing element is bonded and connected with the peripheral wall of the sealing cavity in a sealing mode.
In some embodiments, an opening of the capsule towards an end of the exit aperture is substantially equal in size to an outlet cross-sectional size of the exit aperture.
According to some embodiments of the invention, the sealing device further comprises: the clamping ring, the clamping ring is established sealed intracavity and is located deviating from of sealing member draw one side in hole, the clamping ring constructs to be suitable for the orientation draw the direction in hole and compress tightly the sealing member, be formed with on the clamping ring with draw the first through-hole that the export of passageway is relative and communicate.
Further, the sealing device further comprises: the fastener, the fastener is established deviating from of clamping ring one side of sealing member, the fastener with the clamping ring butt in order to the clamping ring applys pressure, be equipped with on the fastener with the relative and second through-hole that communicates of first through-hole.
Further, the fastener is screwed with the peripheral wall of the seal chamber.
A heat exchanger according to a second aspect of the present invention comprises: the heat exchange tubes are arranged in parallel; temperature measuring device, at least one be equipped with in the heat exchange tube and be used for measuring fluid temperature in the heat exchange tube temperature measuring device, temperature measuring device includes: a plurality of thermocouples extending into the heat exchange tube from one end thereof and extending in a lengthwise direction of the heat exchange tube, an end portion of a free end of each thermocouple being formed as a temperature measuring end, and the temperature measuring ends of the plurality of thermocouples being arranged at intervals in the lengthwise direction of the heat exchange tube, each thermocouple having a lead-out wire; the heat exchanger comprises a first flange and a second flange, wherein the first flange is provided with a first fluid cavity, one end of each heat exchange tube is connected with the first flange and communicated to the first fluid cavity, the second flange is provided with a second fluid cavity, and the other end of each heat exchange tube is connected with the second flange and communicated to the second fluid cavity, and an outgoing hole for leading out the outgoing line is formed in the peripheral wall of at least one of the first fluid cavity and the second fluid cavity; according to the sealing device for the small penetrating piece on the cavity, the sealing device is arranged on the first flange and/or the second flange and used for sealing the leading-out hole.
In a specific embodiment of the invention, the thermocouple is an armored thermocouple.
According to some embodiments of the invention, a maximum radial dimension of a portion of the thermocouple that protrudes into the heat exchange tube is no greater than 1 mm.
According to some embodiments of the invention, the temperature detection device further comprises: the bracing piece, the bracing piece is followed the heat exchange tube one end stretches into in the heat exchange tube and follow the length direction of heat exchange tube extends, and is a plurality of the thermocouple is all fixed in on the bracing piece, and is a plurality of the thermocouple the temperature measurement end with the bracing piece with the internal perisporium of heat exchange tube all separates apart.
Further, the bracing piece is the steel pole, just the biggest radial dimension of bracing piece is not more than 4 mm.
According to some embodiments of the invention, the outer peripheral wall of the heat exchange tube is provided with an outer tube thermocouple for measuring the temperature of fluid outside the heat exchange tube.
According to the heat exchanger of the second aspect of the invention, by arranging the sealing device for the fine penetrating piece on the cavity of the first aspect, when the temperature measuring device is used for measuring the temperature in the heat exchange tube of the heat exchanger, the medium in the tube cannot be leaked, so that the temperature measurement work is not influenced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic view of a heat exchanger according to an embodiment of a second aspect of the present invention;
fig. 2 is a schematic view of the sealing device shown in fig. 1.
Reference numerals:
the heat exchanger 100:
a heat exchange tube 1, an inlet end 11, an outlet end 12,
the first flange 2, the first fluid chamber 21,
the second flange 3, the second fluid chamber 31,
the sealing device 4, the clamping seat 41, the connecting hole 411, the sealing cavity 412, the first sealing cavity section 4121, the second sealing cavity section 4122, the sealing element 42, the leading-out channel 421, the pressing ring 43, the first through hole 431, the fastening element 44, the second through hole 441,
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
First, a heat exchanger 100 according to an embodiment of the second aspect of the present invention will be briefly described with reference to fig. 1 and 2.
As shown in fig. 1, a heat exchanger 100 according to a second aspect of the present invention includes: a plurality of heat exchange tubes 1, a temperature measuring device, a first flange 2, a second flange 3 and a sealing device 4 for a fine penetration on a cavity according to the first aspect of the invention.
Specifically, one end of the plurality of heat exchange tubes 1 may be hermetically connected to a first flange 2, and the other end of the plurality of heat exchange tubes 1 may be hermetically connected to a second flange 3; the first flange 2 is provided with a first fluid cavity 21, the second flange 3 is provided with a second fluid cavity 31, and fine leading-out holes can be formed in both the first fluid cavity 21 and the second fluid cavity 31; the temperature measuring device comprises a plurality of thermocouples 6, wherein the thermocouples 6 are provided with temperature measuring ends and leading-out wires, the temperature measuring ends of the thermocouples 6 can extend into the heat exchange tube 1, and the leading-out wires of the thermocouples 6 are suitable for leading out from leading-out holes on the first fluid cavity 21 and the second fluid cavity 31.
A sealing device 4 for a thin through-penetration on a cavity according to an embodiment of the first aspect of the invention is described below with reference to fig. 1 and 2.
As shown in fig. 2, the sealing device 4 according to the first aspect of the present invention can be used to seal the lead-out holes of the thermocouple 6 when the lead-out wires are led out from the lead-out holes on the chamber (the first fluid chamber 21 and the second fluid chamber 31 as described above), so as to prevent the medium in the chamber from leaking out from the lead-out holes. The sealing device 4 may include: a cartridge 41 and a seal 42.
Specifically, the clamping seat 41 may be fixed at the outer side of the cavity, and the clamping seat 41 may be hermetically connected with the outer wall of the cavity, for example, the clamping seat 41 may be welded with the outer wall of the cavity, and a sealing cavity 412 is formed in the clamping seat 41; the sealing member 42 may be disposed in the sealing cavity 412, the interior of the sealing member 42 may define an outlet passage 421, the outlet passage 421 is a labyrinth-type outlet passage 421, an inlet of the outlet passage 421 may be opposite to and communicated with an outlet hole on the cavity, so as to facilitate the penetration member to enter the outlet passage 421 from the outlet hole, and an end of the sealing member 42 facing the outlet hole (e.g., an upper end of the sealing member shown in fig. 2) is in sealing connection with the clamping seat 41 and/or a peripheral edge of the outlet hole. Therefore, in the embodiment, the clamping seat 41 is hermetically connected with the cavity, and the labyrinth leading-out channel 421 is arranged in the sealing element 42, so that the penetrating element can conveniently penetrate through the leading-out hole and the leading-out channel 421, and meanwhile, the medium leakage in the cavity can be effectively reduced.
For example, as shown in fig. 2, a labyrinth type leading-out channel 421 is formed inside the sealing member 42, the leading-out channel 421 includes a channel inlet, a channel outlet and an intermediate channel, wherein the intermediate channel is formed as a multiple-circuitous zigzag channel, that is, after the leading-out wire enters the leading-out channel 421 from the channel inlet, in the process of passing through the intermediate channel to reach the channel outlet, the path of the leading-out wire is not a straight line, but a labyrinth curve that is meandered back and forth, so that in the process of leading-out the leading-out wire through the leading-out channel 421, the leakage of the medium in the cavity along with the leading-out wire can be effectively prevented, and especially in the environment of high temperature and high pressure in the cavity, the labyrinth type leading-out channel 421 of the sealing member 42 can bear the high pressure brought by the medium in the cavity.
According to the sealing device 4 for the small penetrating piece on the cavity, the clamping seat 41 is welded with the outer wall of the cavity, and the labyrinth leading-out channel 421 is arranged inside the sealing element 42, so that when the cavity is provided with the leading-out hole, and the penetrating piece penetrates through the leading-out hole and is led out through the labyrinth leading-out channel 421 in the sealing element 42, the leading-out hole of the cavity 412 can be well sealed by the sealing device 4, meanwhile, the internal structure of the sealing device 4 can ensure that the sealing device has good sealing performance, and further, the medium leakage cannot occur when the penetrating piece is led out from the cavity.
According to some embodiments of the invention, the seal 42 is a graphite piece. Because graphite has good high temperature resistance, thermal expansion coefficient and lower permeability, the sealing member 42 made of graphite material can further improve the sealing performance of the sealing device 4 and prevent the medium in the cavity from leaking.
According to some embodiments of the invention, as shown in fig. 2, the seal cavity 412 has a gradually increasing cross-sectional dimension in a direction away from the exit hole along the axis of the exit hole, and the seal 42 conforms to the shape of the seal cavity 412. For example, as shown in fig. 2, the seal cavity 412 may include a first seal cavity segment 4121 and a second seal cavity segment 4122, the first seal cavity segment 4121 may be formed in a circular truncated cone shape, and the cross-sectional dimension of the first seal cavity segment 4121 increases in the top-to-bottom direction, and the shape of the seal 42 is adapted to the shape of the first seal cavity segment 4121, so that the contact area between the seal 42 and the first seal cavity segment 4121 may be increased, and the sealing effect may be better.
Further, the sealing member 42 is bonded and sealingly connected to the peripheral wall of the sealing chamber 412. This can further improve the sealing performance of the sealing device 4.
In some embodiments, the opening of the sealed chamber 412 at the end facing the exit aperture (i.e., the connection aperture 411 described above) is substantially the same size as the exit cross-sectional size of the exit aperture. That is, the cross-sectional dimension of the connection hole 411 of the sealed chamber 412 may be equal to or slightly larger than the cross-sectional dimension of the outlet of the lead-out hole, so that the lead-out wire of the thermocouple 6 is smoothly introduced into the sealed chamber 412 from the connection hole 411 after being led out from the lead-out hole.
According to some embodiments of the invention, as shown in fig. 2, the sealing device 4 further comprises: and a pressure ring 43. Specifically, the pressing ring 43 is disposed in the sealing cavity 412, the pressing ring 43 is located on a side of the sealing member 42 (e.g., a lower side of the sealing member 42 shown in fig. 2) facing away from the lead-out hole, the pressing ring 43 may be configured to press the sealing member 42 toward the lead-out hole, a first through hole 431 is formed in the pressing ring 43, and the first through hole 431 may be opposite to and communicate with an outlet of the lead-out channel 421, so that the lead-out wire of the thermocouple 6 is led out through the first through hole 431, and meanwhile, the pressing ring 43 of the embodiment may further seal the lead-out hole of the cavity. For example, as shown in fig. 2, the pressing ring 43 may be formed in a cylindrical shape, an outer side wall of the pressing ring 43 may be fitted to a smooth surface of an upper portion of an inner side wall of the second sealed cavity segment 4122, an outer side wall of the pressing ring 43 may be in interference fit with the inner side wall of the second sealed cavity segment 4122, and further, the outer side wall of the pressing ring 43 may be bonded to the inner side wall of the second sealed cavity segment 4122.
Further, as shown in fig. 2, the sealing device 4 further includes: a fastener 44. Specifically, the fastening member 44 is disposed on a side of the pressing ring 43 facing away from the sealing member 42 (e.g., a lower side of the pressing ring 43 shown in fig. 2), the fastening member 44 abuts against the pressing ring 43 to apply pressure to the pressing ring 43, and a second through hole 441 is disposed on the fastening member 44, and the second through hole 441 may be opposite to and communicate with the first through hole 431. Thus, the fastening member 44 in this embodiment can not only press the press ring 43, but also facilitate the leading-out wire of the thermocouple 6 to be led out through the fastening member 44, and at the same time, the fastening member 44 can further improve the sealing performance of the sealing device 4.
Further, the fastener 44 is threadedly coupled to the peripheral wall of the seal chamber 412. For example, as shown in fig. 2, the lower portion surface of the inner wall of the second seal chamber segment 4122 may be formed with threads, and the fastening member 44 may be screw-engaged with the lower portion of the second seal chamber segment 4122, so that the coupling stability of the fastening member 44 with the seal chamber 412 may be improved, and the sealing shape of the sealing device 4 may be improved.
For example, as shown in fig. 1 and fig. 2, a first fluid chamber 21 and a second fluid chamber 31 are respectively connected to two ends of a heat exchange tube 1, wherein the first fluid chamber 21 is connected to the inlet ends 11 of the plurality of heat exchange tubes 1, the second fluid chamber 31 can be connected to the outlet ends 12 of the plurality of heat exchange tubes 1, both the first fluid chamber 21 and the second fluid chamber 31 are provided with extraction holes, it should be noted that the aperture of the extraction hole can reach millimeter level, and the aperture can only accommodate an extraction line of a thermocouple 6 with a diameter of 1mm-4mm to pass through; the upper end of the card holder 41 can also be formed with a connecting hole 411, the aperture of the connecting hole 411 can be the same as the aperture of the leading-out hole, and the aperture of the connecting hole 411 can also be slightly larger than the aperture of the leading-out hole, so that the card holder 41 and the cavity can be favorably connected, and the medium can be favorably and prevented from leaking from the leading-out hole.
Further, the inside of the cartridge 41 may be formed with a seal cavity 412, and the seal cavity 412 may include a first seal cavity section 4121 and a second seal cavity section 4122, wherein the first seal cavity section 4121 may be formed in a circular truncated cone shape, the size of the first seal cavity section 4121 is gradually increased in a direction from top to bottom, the second seal cavity section 4122 may be formed in a cylindrical shape, the top of the first seal cavity section 4121 is a connection hole 411 (the connection hole 411 described above), the bottom of the first seal cavity section 4121 may be communicated with the top of the second seal cavity section 4122, the upper side portion of the inner wall of the second seal cavity section 4122 may be formed in a smooth surface, and the lower side portion surface of the inner wall of the second seal cavity section 4122 may be formed in a threaded shape; the shape of the sealing element 42 may be adapted to the shape of the first sealed cavity section 4121, the outer side wall of the sealing element 42 may be in press contact with the inner side wall of the first sealed cavity section 4121, the interior of the sealing element 42 may define the lead-out passage 421, the lead-out passage 421 may be a labyrinth lead-out passage 421, the lead-out passage 421 may include an inlet end and an outlet end, the inlet end of the lead-out passage 421 is formed at the top of the sealing element 42, and the size of the inlet end of the lead-out passage 421 may be the same as that of the connection hole 411, so that the lead-out wire of the thermocouple 6 may be smoothly led out from the lead-out hole of the cavity and sequentially pass through the clamping seat 41 and the sealing element 42, and the structure of the sealing element 42 and the sealing connection of the clamping seat 41 and the cavity may prevent the medium in the cavity from leaking.
In summary, according to the sealing device 4 of the embodiment of the first aspect of the present invention, the three-stage sealing design of the sealing member 42, the pressing ring 43 and the fastening member 44 can facilitate the leading-out of the lead wire of the thermocouple 6, and can improve the sealing performance when the lead wire is led out from the leading-out hole, and meanwhile, the sealing device 4 can have a wider application range, especially the application range of the sealing device 4 when the medium inside the cavity is in the high-temperature high-pressure environment 43.
The heat exchanger 100 according to the second aspect of the present invention comprises: a plurality of heat exchange tubes 1, a temperature measuring device, a first flange 2 and a second flange 3 and a sealing device 4 according to the first aspect of the invention.
Specifically, for example, as shown in fig. 1, a plurality of heat exchange tubes 1 may be arranged in parallel, so that the heat exchange area of the heat exchanger 100 may be increased by increasing the number of the heat exchange tubes 1, thereby improving the heat exchange efficiency of the heat exchanger 100; at least one heat exchange tube 1 is equipped with temperature measuring device in, temperature measuring device can be used for measuring the fluid temperature in heat exchange tube 1, and temperature measuring device can include: a plurality of thermocouples 6, the plurality of thermocouples 6 extending into the heat exchange tube 1 from one end of the heat exchange tube 1 (for example, the inlet end 11 of the heat exchange tube 1 shown in fig. 1), the plurality of thermocouples 6 being extendable along the length direction of the heat exchange tube 1, the end portion of the free end of each thermocouple 6 being formed as a temperature measuring end, and the temperature measuring ends of the plurality of thermocouples 6 being arranged at intervals along the length direction of the heat exchange tube 1, each thermocouple 6 having an outgoing line, the outgoing line of each thermocouple 6 being extractable from the inlet end 11 of the heat exchange tube 1.
The first flange 2 has a first fluid chamber 21, one end of the plurality of heat exchange tubes 1 (for example, the inlet end 11 of the heat exchange tube 1 shown in fig. 1) is connected to the first flange 2, the inlet ends 11 of the plurality of heat exchange tubes 1 may be communicated to the first fluid chamber 21 through the first flange 2, the second flange 3 has a second fluid chamber 31, the other end of the plurality of heat exchange tubes 1 (for example, the outlet end 12 of the heat exchange tube 1 shown in fig. 1) is connected to the second flange 3, and the outlet ends 12 of the plurality of heat exchange tubes 1 may be communicated to the second fluid chamber 31 through the second flange 3, so that the outgoing lines of the thermocouple 6 can be easily led out from the peripheral wall of the first fluid chamber 21 or the second fluid chamber 31.
Further, at least one of the first fluid chamber 21 and the second fluid chamber 31 has a lead-out hole in a peripheral wall thereof, and the lead-out hole may be used for leading out a lead-out wire. In other words, the peripheral wall of the first fluid chamber 21 may be provided with an extraction hole, and the peripheral walls of the first fluid chamber 21 and the second fluid chamber 31 may be provided with extraction holes, so that the extraction line of the thermocouple 6 is conveniently extracted from the extraction holes, and the temperature field distribution of the fluid in the heat exchange tube 1 is fed back.
According to the sealing device 4 for the thin penetrating piece on the cavity in the first aspect of the invention, the sealing device 4 is arranged on the first flange 2 and/or the second flange 3 and is used for sealing the leading-out hole. That is, the sealing device 4 may be provided only on the first flange 2, or the sealing device 4 may be provided only on the second flange 3, and preferably, the sealing devices 4 are provided on both the first flange 2 and the second flange 3, so that the thermocouples 6 are conveniently arranged into the heat exchange tube 1 from the inlet end 11 and the outlet end 12 of the heat exchange tube 1, respectively, and the thermocouples 6 are uniformly distributed in the whole heat exchange tube 1, thereby preventing the thermocouples 6 from being unevenly arranged in the tube due to the special shape of the heat exchange tube 1 when the thermocouples 6 are arranged into the heat exchange tube 1 from only one end of the heat exchange tube 1.
For example, as shown in fig. 1, since the heat exchange tube 1 is formed in a C shape, the heat exchange tube 1 includes an upper horizontal tube section, a vertical tube section, and a lower horizontal tube section, the first flange 2 is connected to the upper horizontal tube section, the second horizontal section is connected to the lower horizontal tube section, the first flange 2 and the second flange 3 are both provided with the sealing device 4, and thermocouples 6 can be respectively arranged in the heat exchange tube 1 from the first fluid cavity 21 of the first flange 2 and the second fluid cavity 31 of the second flange 3, wherein the thermocouples 6 extending from the first fluid cavity 21 can be arranged at the upper horizontal tube section and the vertical tube section at uniform intervals, and the thermocouples 6 extending from the second fluid cavity 31 can be arranged in the lower horizontal tube section, so that the temperature measurement points in the whole heat exchange tube 1 can be arranged more uniformly, and the measured data can be more detailed and real and effective.
Furthermore, the first fluid chamber 21 and the second fluid chamber 31 may be respectively provided with two outlet holes, the two outlet holes of the first fluid chamber 21 may be radially and symmetrically arranged on the peripheral wall thereof, the two outlet holes of the second fluid chamber 31 may be radially and symmetrically arranged on the peripheral wall thereof, correspondingly, the first fluid chamber 21 and the second fluid chamber 31 are respectively provided with two sealing devices 4 corresponding to the outlet holes one by one, since each thermocouple 6 is connected with one outlet wire, in the case that a plurality of thermocouples 6 are uniformly arranged in the tube, if the outlet wires of the plurality of thermocouples 6 are only led out from one outlet hole, the aperture of the outlet holes is increased, which is not beneficial for sealing, but in the embodiment, the two outlet holes are respectively provided on the first fluid chamber 21 and the second fluid chamber 31, so that a plurality of outlet wires led out from the first fluid chamber 21 can be divided into upper and lower ends to be led out, and a plurality of outlet wires led out from the second fluid chamber 31 can be divided into upper and lower ends to be led out, thereby reducing the diameters of the lead-out hole, the labyrinth lead-out passage 421, the first through hole 431, and the second through hole 441 as much as possible, and further improving the sealing effect of the sealing device 4.
In one embodiment of the invention, the thermocouple 6 is an armored thermocouple. Specifically, the armored thermocouple may include an armored portion and a signal transmission line, wherein temperature measuring ends of the thermocouples 6 are all formed at an end of the armored portion, and since high-temperature and high-pressure fluid exists in the heat exchange tube 1, portions of the thermocouples 6 extending into the heat exchange tube 1 are all armored portions of the thermocouples 6, and the positions of the temperature measuring ends of the thermocouples 6 in the heat exchange tube can be adjusted by controlling the length of the armored portion of each thermocouple 6 extending into the heat exchange tube 1, so that uniform arrangement of temperature measuring points in the heat exchange tube 1 is achieved; the signal transmission line of the thermocouple 6 can be arranged outside the tube, and is led out through the lead-out hole by the armor part and is electrically connected with the signal transmission line, so that the thermocouple 6 is conveniently arranged, and the influence or damage of the high-temperature high-voltage environment 43 in the tube on the performance of the signal transmission line of the thermocouple 6 can be prevented.
According to some embodiments of the present invention, the maximum radial dimension of the portion of the thermocouple 6 projecting into the heat exchange tube 1 is not greater than 1 mm. Therefore, the influence of the parts of the thermocouples 6 extending into the heat exchange tube 1 on the flow channel of the fluid in the tube can be reduced as much as possible, and the leading-out wires can be conveniently led out for sealing.
According to some embodiments of the invention, the temperature detection device may further include: a support bar 5. Specifically, the support rod 5 extends into the heat exchange tube 1 from one end of the heat exchange tube 1 (for example, the heat exchange tube 1 shown in fig. 1), the support rod 5 can extend along the length direction of the heat exchange tube 1, the thermocouples 6 are all fixed on the support rod 5, and the temperature measuring ends of the thermocouples 6 are spaced from the support rod 5 and the inner peripheral wall of the heat exchange tube 1, so that on one hand, the support rod 5 can guide the thermocouples 6 to extend into the tube and be uniformly distributed at different positions in the tube, and on the other hand, the temperature measuring ends of the thermocouples 6 are spaced from the inner peripheral walls of the support rod 5 and the heat exchange tube 1, and the temperature measuring results of the thermocouples 6 in the support rod 5 and the inner peripheral wall of the heat exchange tube 1 can be prevented from being influenced.
Further, the support rod 5 is a steel rod, and the maximum radial dimension of the support rod 5 is not more than 4 mm. For example, the diameter of the support rod 5 may be 1mm, 1.5mm, 2mm, 3mm, or 4mm, whereby the influence of the support rod 5 on the flow of the fluid in the heat exchange tube 1 can be minimized.
According to some embodiments of the present invention, an outside thermocouple 7 is provided on the outer peripheral wall of the heat exchange tube 1, and the outside thermocouple 7 can be used to measure the temperature of the fluid outside the heat exchange tube 1. When the heat exchanger 100 works, the heat exchange tube 1 of the heat exchanger 100 can be directly soaked in cooling liquid, and the external thermocouple 7 can be combined with the temperature data of the fluid in the heat exchange tube 1, which is measured by the thermocouple 6 in the heat exchange tube 1, by measuring the temperature data of the cooling liquid outside the heat exchange tube 1 and close to the wall of the heat exchange tube 1, so that the actual heat exchange effect of the heat exchanger 100 can be detected.
According to the heat exchanger 100 of the second aspect of the present invention, the sealing device 4 for the fine through-penetrating piece on the cavity of the first aspect is arranged, so that when the temperature measuring device is used for measuring the temperature in the heat exchange tube 1 of the heat exchanger 100, the medium in the tube cannot leak, and the temperature measurement work is not affected.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (14)
1. A sealing device for a fine penetrating member on a cavity, wherein an outlet hole is formed on the cavity, the sealing device comprises:
the clamping seat is fixed on the outer side of the cavity and is in sealing connection with the outer wall of the cavity, and a sealing cavity is formed in the clamping seat;
the sealing element is arranged in the sealing cavity, an extraction channel is defined in the sealing element and is a labyrinth extraction channel, the inlet of the extraction channel is opposite to and communicated with the extraction hole, and one end of the sealing element facing the extraction hole is in sealing connection with the clamping seat and/or the periphery of the extraction hole.
2. The seal for a thin penetration in a cavity of claim 1, wherein said seal is a graphite piece.
3. The sealing device for the fine penetration piece on the cavity as claimed in claim 1, wherein the cross-sectional dimension of the sealing cavity is gradually increased in a direction from the exit hole along the axis of the exit hole toward the direction away from the exit hole, and the sealing member is adapted to the shape of the sealing cavity.
4. The sealing device for the fine penetrating member on the cavity body as claimed in claim 3, wherein the sealing member is bonded and hermetically connected with the peripheral wall of the sealing cavity.
5. The seal for a fine penetration of a cavity of claim 3, wherein an opening of the seal cavity at an end facing the exit aperture is substantially the same size as an exit cross-sectional dimension of the exit aperture.
6. The sealing device for a fine penetration on a cavity of any one of claims 1 to 5, further comprising: the clamping ring, the clamping ring is established sealed intracavity and is located deviating from of sealing member draw one side in hole, the clamping ring constructs to be suitable for the orientation draw the direction in hole and compress tightly the sealing member, be formed with on the clamping ring with draw the first through-hole that the export of passageway is relative and communicate.
7. The seal for a thin penetration on a cavity of claim 6, further comprising: the fastener, the fastener is established deviating from of clamping ring one side of sealing member, the fastener with the clamping ring butt in order to the clamping ring applys pressure, be equipped with on the fastener with the relative and second through-hole that communicates of first through-hole.
8. The seal for a thin penetration on a chamber of claim 7, wherein said fastener is threaded to a peripheral wall of said seal chamber.
9. A heat exchanger, comprising:
the heat exchange tubes are arranged in parallel;
temperature measuring device, at least one be equipped with in the heat exchange tube and be used for measuring fluid temperature in the heat exchange tube temperature measuring device, temperature measuring device includes: a plurality of thermocouples extending into the heat exchange tube from one end thereof and extending in a lengthwise direction of the heat exchange tube, an end portion of a free end of each thermocouple being formed as a temperature measuring end, and the temperature measuring ends of the plurality of thermocouples being arranged at intervals in the lengthwise direction of the heat exchange tube, each thermocouple having a lead-out wire;
the heat exchanger comprises a first flange and a second flange, wherein the first flange is provided with a first fluid cavity, one end of each heat exchange tube is connected with the first flange and communicated to the first fluid cavity, the second flange is provided with a second fluid cavity, and the other end of each heat exchange tube is connected with the second flange and communicated to the second fluid cavity, and an outgoing hole for leading out the outgoing line is formed in the peripheral wall of at least one of the first fluid cavity and the second fluid cavity;
the sealing device for the fine penetrating piece on the cavity is arranged on the first flange and/or the second flange and used for sealing the leading-out hole, and the sealing device is used for sealing the fine penetrating piece on the cavity according to any one of claims 1 to 8.
10. The heat exchanger of claim 9, wherein the thermocouple is an armored thermocouple.
11. The heat exchanger of claim 9, wherein the portion of the thermocouple projecting into the heat exchange tube has a maximum radial dimension of no more than 1 mm.
12. The heat exchanger of claim 9, wherein the temperature sensing device further comprises: the bracing piece, the bracing piece is followed the heat exchange tube one end stretches into in the heat exchange tube and follow the length direction of heat exchange tube extends, and is a plurality of the thermocouple is all fixed in on the bracing piece, and is a plurality of the thermocouple the temperature measurement end with the bracing piece with the internal perisporium of heat exchange tube all separates apart.
13. The heat exchanger of claim 12, wherein the support rods are steel rods and the maximum radial dimension of the support rods is no greater than 4 mm.
14. The heat exchanger of claim 9, wherein the outer peripheral wall of the heat exchange tube is provided with an outer tube thermocouple for measuring the temperature of the fluid outside the heat exchange tube.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010037166.6A CN113187898B (en) | 2020-01-14 | 2020-01-14 | Sealing device for small penetrating piece on cavity and heat exchanger with sealing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010037166.6A CN113187898B (en) | 2020-01-14 | 2020-01-14 | Sealing device for small penetrating piece on cavity and heat exchanger with sealing device |
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| CN113187898B CN113187898B (en) | 2024-06-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113804320A (en) * | 2021-09-07 | 2021-12-17 | 西安交通大学 | Lead sealing device of high-temperature high-pressure exposed thermocouple |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5639095A (en) * | 1988-01-04 | 1997-06-17 | Twentieth Technology | Low-leakage and low-instability labyrinth seal |
| EP0796696A1 (en) * | 1996-03-19 | 1997-09-24 | Framatome | Method and device for withdrawing part of a tube from a heat exchanger and use of the method and the device |
| CN1636837A (en) * | 2003-12-23 | 2005-07-13 | 沃易斯涡轮股份有限公司 | Packaged unit with thermal fuse function |
| US20050155748A1 (en) * | 2003-08-29 | 2005-07-21 | Dana Canada Corporation | Concentric tube heat exchanger end seal therefor |
| CN200943723Y (en) * | 2006-09-01 | 2007-09-05 | 金为民 | Sheet type damping pressure relief valve |
| US20100037681A1 (en) * | 2008-08-15 | 2010-02-18 | Hart Dennis L | Pipe pressure testing method and apparatus |
| CN102080749A (en) * | 2009-12-01 | 2011-06-01 | 杜布林公司 | Rotary union with selectively controlled seal |
| CN206793977U (en) * | 2017-05-08 | 2017-12-26 | 常州铭赛机器人科技股份有限公司 | Fluid micro injection apparatus and its flow channel component |
| CN108071807A (en) * | 2018-01-08 | 2018-05-25 | 许建中 | Contact labyrinth seal |
| US20180156337A1 (en) * | 2015-06-05 | 2018-06-07 | Danfoss Commercial Compressors | Fluid machine having a labyrinth seal |
| CN109378095A (en) * | 2018-10-18 | 2019-02-22 | 中国核动力研究设计院 | A kind of end seals structure of cluster critical heat flux density test simulation body |
-
2020
- 2020-01-14 CN CN202010037166.6A patent/CN113187898B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5639095A (en) * | 1988-01-04 | 1997-06-17 | Twentieth Technology | Low-leakage and low-instability labyrinth seal |
| EP0796696A1 (en) * | 1996-03-19 | 1997-09-24 | Framatome | Method and device for withdrawing part of a tube from a heat exchanger and use of the method and the device |
| US20050155748A1 (en) * | 2003-08-29 | 2005-07-21 | Dana Canada Corporation | Concentric tube heat exchanger end seal therefor |
| CN1636837A (en) * | 2003-12-23 | 2005-07-13 | 沃易斯涡轮股份有限公司 | Packaged unit with thermal fuse function |
| CN200943723Y (en) * | 2006-09-01 | 2007-09-05 | 金为民 | Sheet type damping pressure relief valve |
| US20100037681A1 (en) * | 2008-08-15 | 2010-02-18 | Hart Dennis L | Pipe pressure testing method and apparatus |
| CN102080749A (en) * | 2009-12-01 | 2011-06-01 | 杜布林公司 | Rotary union with selectively controlled seal |
| US20180156337A1 (en) * | 2015-06-05 | 2018-06-07 | Danfoss Commercial Compressors | Fluid machine having a labyrinth seal |
| CN206793977U (en) * | 2017-05-08 | 2017-12-26 | 常州铭赛机器人科技股份有限公司 | Fluid micro injection apparatus and its flow channel component |
| CN108071807A (en) * | 2018-01-08 | 2018-05-25 | 许建中 | Contact labyrinth seal |
| CN109378095A (en) * | 2018-10-18 | 2019-02-22 | 中国核动力研究设计院 | A kind of end seals structure of cluster critical heat flux density test simulation body |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113804320A (en) * | 2021-09-07 | 2021-12-17 | 西安交通大学 | Lead sealing device of high-temperature high-pressure exposed thermocouple |
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| CN113187898B (en) | 2024-06-04 |
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