CN214620700U - Internal plate-fin heat exchanger with precooling function - Google Patents
Internal plate-fin heat exchanger with precooling function Download PDFInfo
- Publication number
- CN214620700U CN214620700U CN202120546674.7U CN202120546674U CN214620700U CN 214620700 U CN214620700 U CN 214620700U CN 202120546674 U CN202120546674 U CN 202120546674U CN 214620700 U CN214620700 U CN 214620700U
- Authority
- CN
- China
- Prior art keywords
- plate
- heat exchanger
- channel
- fin heat
- precooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a tank built-in plate-fin heat exchanger with precooling, which comprises a siphon tank, a precooler and a plate-fin heat exchanger; the siphon tank is of a tank body structure with a hollow heat transfer chamber, and a horizontally placed partition plate is fixed in the heat transfer chamber; the partition board can completely cover the cross section of the heat transfer chamber, and divide the heat transfer chamber into a precooling section positioned above and a condensing section positioned below; a precooler is arranged in the precooling section, and a plate-fin heat exchanger partially immersed in the refrigerant is arranged in the condensing section. The utility model discloses a gas phase that the baffle produced in with plate fin heat exchanger collects to the precooler in to condensation gas (hot commodity circulation) gaseous phase precooling, when making hot commodity circulation enter plate fin heat exchanger, is less than 30 ℃ with the cryogen evaporating temperature difference in temperature to satisfy standard design requirement.
Description
Technical Field
The utility model belongs to plate-fin heat exchanger field, concretely relates to take tank of precooling to put plate-fin heat exchanger.
Background
In order to ensure that the temperature stress does not greatly affect the service life of the equipment, the requirement for the temperature difference of the aluminum plate-fin heat exchanger in the relevant standard (standard number: NB/T47006-: when the cold and hot material flows are single-phase, the maximum heat exchange temperature difference is not more than 50 ℃; when any material flow in the material flows has two-phase fluid, the heat exchange temperature difference of cold and hot material flows of the plate-fin heat exchanger is not more than 30 ℃. In petrochemical projects and tail gas recovery projects, internal siphon heat exchange heat exchangers are commonly used for condensing gas, such as propylene evaporation for ethylene condensation and liquid nitrogen evaporation for helium condensation, cold material flow belongs to saturated evaporation in process design, the evaporation temperature is usually 2-5 ℃ lower than the condensation temperature of hot material flow, and the main heat exchange section is small temperature difference heat exchange. However, as the hot fluid is in an overheated state and the inlet temperature is high, the temperature difference of the heat exchanger in a sensible heat section with a small load ratio is 30-50 ℃, and the cold fluid is gas-liquid two-phase in the whole heat exchange channel, so that the requirement of the standard on equipment design is not met. The utility model discloses a take tank of precooling to put plate-fin heat exchanger, can be through the gaseous phase of cold commodity circulation evaporation to the gaseous precooling of condensation to make bottom siphon heat exchanger satisfy cold and hot commodity circulation heat transfer difference in temperature and be not more than 30 ℃, guarantee that plate-fin heat exchanger satisfies standard design requirement.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the defect among the prior art to a take tank of precooling to put board fin heat exchanger. The utility model discloses an adopt the gas of cold commodity circulation to carry out the precooling to the commodity circulation of condensation to the big difference in temperature in the siphon heat exchanger has been solved.
The utility model discloses the concrete technical scheme who adopts as follows:
the utility model provides a tank built-in plate-fin heat exchanger with precooling, which comprises a siphon tank, a precooler and a plate-fin heat exchanger; the siphon tank is of a tank body structure with a hollow heat transfer chamber, and a horizontally placed partition plate is fixed in the heat transfer chamber; the partition board can completely cover the cross section of the heat transfer chamber, and divide the heat transfer chamber into a precooling section positioned above and a condensing section positioned below;
a precooler is arranged in the precooling section, an air inlet pipe communicated with the outside is arranged at the upper part of the precooler, and the air inlet pipe is used for conveying gas-phase hot material flow into a gas-phase channel in the precooler; the condensing section is used for containing liquid-phase refrigerant, and a plate-fin heat exchanger partially immersed in the refrigerant is arranged in the condensing section;
the inlet of the first channel of the plate-fin heat exchanger is communicated with the outlet of the gas-phase channel of the precooler; the outlet of the first channel is communicated with the outside and is used for conveying the hot material flow condensed into liquid out of the siphon tank; the outlet of the second channel of the plate-fin heat exchanger is communicated with the inlet of a refrigerant channel of the precooler, and the inlet of the second channel is communicated with a refrigerant in the condensation section; the second channel is used for changing the refrigerant from a liquid phase to a gas phase and conveying the gas-phase refrigerant to the precooler for precooling and heat exchange on the hot material flow.
Preferably, the plate-fin heat exchanger is a heat exchanger for internal siphon heat exchange.
Preferably, the distance between the top of the plate-fin heat exchanger and the bottom of the precooler is 300-1000 mm.
Preferably, the precooler is placed and fixed on the upper surface of the partition plate.
Preferably, the lower surface of the partition plate is provided with a supporting device, and the top of the plate-fin heat exchanger is fixedly connected with the partition plate through the supporting device.
Further, the supporting device is a boom support.
Preferably, the inlet of the first channel of the plate-fin heat exchanger is communicated with the outlet of the gas-phase channel of the precooler through a straight pipeline.
Preferably, the partition board is provided with an exchange hole, an inlet of the second channel is positioned below the exchange hole, and an inlet of the refrigerant channel is positioned above the exchange hole; and the gas-phase refrigerant overflows from the outlet of the second channel, passes through the exchange holes and then is collected and enters the refrigerant channel.
Preferably, the gas-phase channel outlet of the precooler is positioned at the lower part of the precooling section, and the refrigerant-channel inlet is positioned at the lower part of the precooling section.
Furthermore, a first channel inlet of the plate-fin heat exchanger is positioned at the upper part of the condensation section, and a first channel outlet is positioned at the lower part of the condensation section; the second channel outlet is positioned at the upper part of the condensing section, and the second channel inlet is positioned at the lower part of the condensing section.
Compared with the prior art, the utility model, following beneficial effect has:
1) the utility model discloses the evaporation gas of hot commodity circulation and cryogen in the precooling heat exchanger that adds is single-phase fluid, can accept the big difference in temperature of 50 ℃.
2) The utility model discloses an add the precooler, further heat siphon tank top refrigerant gaseous phase, guarantee that the export of siphon tank does not have liquid to carry.
3) The utility model discloses a precooler and plate-fin heat exchanger support as the fixed point through intermediate bottom simultaneously, take over and contract to same direction with precooler and plate-fin heat exchanger between precooler and the plate-fin heat exchanger under the low temperature condition, eliminate the stress that takes over between precooler and the plate-fin heat exchanger and receive under the low temperature condition. After stress is eliminated, the precooler and the plate-fin heat exchanger are directly connected through the short pipe, and the size of the equipment is reduced.
4) The utility model discloses a precooler and plate-fin heat exchanger hot commodity circulation adopt inside pipeline lug connection, and the cryogen gaseous phase collects the entering cryogen passageway through the baffle, reduces the outside piping between outside precooler and the plate-fin heat exchanger, has optimized equipment and has taken up an area of the space.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention;
the reference numbers in the figures are: the device comprises a siphon tank 1, a precooler 2, a plate-fin heat exchanger 3, a partition plate 4 and a supporting device 5.
Detailed Description
The invention will be further elucidated and described with reference to the drawings and embodiments. The utility model discloses in the technical characteristics of each embodiment under the prerequisite that does not conflict each other, all can carry out corresponding combination.
As shown in fig. 1, for the utility model provides a take tank of precooling to put plate-fin heat exchanger, including siphon jar 1, precooler 2 and plate-fin heat exchanger 3. The equipment is applied to an inner siphon plate-fin heat exchanger with large temperature difference in gas condensation and sensible heat section, the siphon heat exchanger with the precooler added in the siphon tank for gas condensation precools condensed gas through gas evaporated in the siphon tank, and therefore the problem of large temperature difference in the plate-fin heat exchanger is solved. The specific structure and connection of the apparatus will be described below.
The siphon tank 1 is a tank body structure with a hollow heat transfer chamber, and the structures of all components in the siphon tank 1 are kept airtight so as to prevent gas leakage in the operation process of the equipment. A partition plate 4 is fixed in the heat transfer chamber, the partition plate 4 is of a flat plate structure which is horizontally placed, the part fixedly connected between the partition plate 4 and the inner cavity of the heat transfer chamber is kept closed, and the partition plate 4 can completely cover the cross section of the heat transfer chamber at the position. By the separation effect of the partition plate 4, the heat transfer chamber is divided into two parts which are relatively independent from each other, namely an upper precooling section and a lower condensing section.
The precooling section is provided with a precooler 2, and the precooler 2 comprises a gas phase channel and a refrigerant channel which are not communicated with each other but can exchange heat with each other. Plate-fin heat exchanger 3 in the condensation section, including first passageway and the second passageway that each other do not communicate but can the interconversion in plate-fin heat exchanger 3. In practical application, the condensing section also contains liquid-phase refrigerant for heat exchange, and the plate-fin heat exchanger 3 should be partially immersed in the refrigerant. A refrigerant adding port can be formed in the side wall of the siphon pot 1 positioned at the upper part of the condensation section, and refrigerant can be added into the condensation section through the refrigerant adding port before use.
In the present embodiment, the gas phase passage outlet of the precooler 2 is located at the lower part of the precooling section, and the refrigerant passage inlet is located at the lower part of the precooling section, i.e. the fluid flow directions in the two passages are opposite. A first channel inlet of the plate-fin heat exchanger 3 is positioned at the upper part of the condensation section, and a first channel outlet is positioned at the lower part of the condensation section; the outlet of the second channel is positioned at the upper part of the condensing section, and the inlet of the second channel is positioned at the lower part of the condensing section; i.e. the fluid flow in the two channels is in opposite directions.
An air inlet is formed in the upper portion of the precooler 2, an air inlet pipe communicated with the outside is arranged on the air inlet, and in the actual application process, gas-phase hot material flow needing to be condensed is conveyed into a gas-phase channel in the precooler 2 through the air inlet pipe. The outlet of the gas phase channel of the precooler 2 is communicated with the inlet of the first channel of the plate-fin heat exchanger 3, and the outlet of the first channel is communicated with the outside. And the outlet of the second channel of the plate-fin heat exchanger 3 is communicated with the inlet of the refrigerant channel of the precooler 2, and the inlet of the second channel is communicated with the refrigerant in the condensation section.
In this embodiment, the plate-fin heat exchanger 3 may adopt a heat exchanger with internal siphon heat exchange, which is one of the plate-fin heat exchangers, and can suck external refrigerant into the heat exchanger through siphon action. In order to ensure that the gas-phase refrigerant overflowing from the plate-fin heat exchanger 3 can be effectively collected into the precooler 2, the distance between the top of the plate-fin heat exchanger 3 and the bottom of the precooler 2 needs to be ensured not to be too large, and is preferably 300 mm-1000 mm. The fixing and communicating mode of the plate-fin heat exchanger 3 and the precooler 2 is provided, and the specific mode is as follows: the precooler 2 can be placed and fixed on the upper surface of the partition plate 4, the lower surface of the partition plate 4 is provided with a supporting device 5, and the top of the plate-fin heat exchanger 3 is fixedly connected with the partition plate 4 through the supporting device 5; the supporting device 5 can adopt a suspension arm supporting piece, namely, the plate-fin heat exchanger 3 is suspended below the partition plate 4; the inlet of the first channel of the plate-fin heat exchanger 3 is communicated with the outlet of the gas-phase channel of the precooler 2 through a pipeline; the partition plate 4 is provided with an exchange hole, the inlet of the second channel is positioned below the exchange hole, and the inlet of the refrigerant channel is positioned above the exchange hole, so that the gas-phase refrigerant firstly overflows from the outlet of the second channel, then is collected through the exchange hole and enters the refrigerant channel.
In the operation process of the device, the hot material flow to be condensed firstly carries out preliminary precooling heat exchange in the precooler 2, the hot material flow with reduced temperature after heat exchange flows out of the precooler 2 and enters the first channel of the plate-fin heat exchanger 3, the hot material flow is changed into a liquid phase from a gas phase through the further condensation heat exchange effect with the refrigerant in the first channel, and finally the hot material flow is conveyed out of the siphon tank 1 through the outlet of the first channel. Because the inlet of the second channel in the plate-fin heat exchanger 3 is communicated with the refrigerant in the condensation section, the refrigerant can enter the second channel through siphonage, and through the heat exchange effect with the hot material flow in the first channel, part of the refrigerant in the second channel can be gasified, namely, the refrigerant is converted from a liquid state into a saturated gas state, the refrigerant converted into a gas-liquid two-phase state overflows through the outlet of the second channel, the gas phase is separated by the upper space of the plate-fin heat exchanger 3 in the siphon tank and then enters the refrigerant channel of the precooler 2 through the partition plate 4, further exchanges heat with the hot material flow in the gas channel, and the gas phase is converted into a superheated gas phase and flows out of the top of the precooler 2. That is to say, the utility model discloses an add the precooler on the upper portion in former siphon jar, collect the gaseous phase that produces in the plate-fin heat exchanger through the baffle and to the precooler in to condensation gas (hot commodity circulation) gaseous phase precooling, when making hot commodity circulation enter plate-fin heat exchanger 3, be less than 30 ℃ with the cryogen evaporating temperature difference to satisfy standard design requirement.
The above embodiments are merely preferred embodiments of the present invention, but not intended to limit the present invention. Various changes and modifications can be made by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present invention. Therefore, all the technical schemes obtained by adopting the mode of equivalent replacement or equivalent transformation fall within the protection scope of the utility model.
Claims (10)
1. A tank built-in plate-fin heat exchanger with precooling is characterized by comprising a siphon tank (1), a precooler (2) and a plate-fin heat exchanger (3); the siphon tank (1) is of a tank body structure with a hollow heat transfer chamber, and a partition plate (4) which is horizontally arranged is fixed in the heat transfer chamber; the partition plate (4) can completely cover the cross section of the heat transfer chamber at the position, and divides the heat transfer chamber into a precooling section positioned above and a condensing section positioned below;
the precooling section is internally provided with a precooler (2), the upper part of the precooler (2) is provided with an air inlet pipe communicated with the outside, and the air inlet pipe is used for conveying gas-phase hot material flow to a gas-phase channel inside the precooler (2); the condensing section is used for containing liquid-phase refrigerant, and a plate-fin heat exchanger (3) partially immersed in the refrigerant is arranged in the condensing section;
the inlet of the first channel of the plate-fin heat exchanger (3) is communicated with the outlet of the gas-phase channel of the precooler (2); the outlet of the first channel is communicated with the outside and is used for conveying the hot material flow condensed into liquid out of the siphon tank (1); the outlet of the second channel of the plate-fin heat exchanger (3) is communicated with the inlet of the refrigerant channel of the precooler (2), and the inlet of the second channel is communicated with the refrigerant in the condensation section; the second channel is used for changing the refrigerant from a liquid phase to a gas phase and conveying the gas-phase refrigerant to the precooler (2) for precooling and heat exchanging on the hot flow.
2. The tank built-in plate-fin heat exchanger with precooling as claimed in claim 1, characterized in that the plate-fin heat exchanger (3) is a heat exchanger with internal siphon heat exchange.
3. The tank built-in plate-fin heat exchanger with precooling as claimed in claim 1, wherein the distance between the top of the plate-fin heat exchanger (3) and the bottom of the precooler (2) is 300 mm-1000 mm.
4. The tank built-in plate-fin heat exchanger with precooling according to claim 1, wherein the precooler (2) is placed and fixed on the upper surface of the partition plate (4).
5. The tank built-in plate-fin heat exchanger with precooling as claimed in claim 1, characterized in that a support device (5) is provided on the lower surface of the partition plate (4), and the top of the plate-fin heat exchanger (3) is fixedly connected to the partition plate (4) by means of the support device (5).
6. The tank with pre-cooling built-in plate-fin heat exchanger according to claim 5, characterized in that the support device (5) is a boom support.
7. The tank built-in plate-fin heat exchanger with precooling as claimed in claim 1, wherein the first channel inlet of the plate-fin heat exchanger (3) is communicated with the gas phase channel outlet of the precooler (2) through a straight pipeline.
8. The tank built-in plate-fin heat exchanger with precooling as claimed in claim 1, wherein the partition plate (4) is provided with an exchange hole, the inlet of the second channel is located below the exchange hole, and the inlet of the refrigerant channel is located above the exchange hole; and the gas-phase refrigerant overflows from the outlet of the second channel, passes through the exchange holes and then is collected and enters the refrigerant channel.
9. The tank built-in plate-fin heat exchanger with precooling as claimed in claim 1, wherein the outlet of the gas phase channel of the precooler (2) is located at the lower part of the precooling section, and the inlet of the refrigerant channel is located at the lower part of the precooling section.
10. The tank built-in plate-fin heat exchanger with precooling as claimed in claim 9, characterized in that the first channel inlet of the plate-fin heat exchanger (3) is located at the upper part of the condensing section and the first channel outlet is located at the lower part of the condensing section; the second channel outlet is positioned at the upper part of the condensing section, and the second channel inlet is positioned at the lower part of the condensing section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120546674.7U CN214620700U (en) | 2021-03-16 | 2021-03-16 | Internal plate-fin heat exchanger with precooling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120546674.7U CN214620700U (en) | 2021-03-16 | 2021-03-16 | Internal plate-fin heat exchanger with precooling function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214620700U true CN214620700U (en) | 2021-11-05 |
Family
ID=78395265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120546674.7U Active CN214620700U (en) | 2021-03-16 | 2021-03-16 | Internal plate-fin heat exchanger with precooling function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214620700U (en) |
-
2021
- 2021-03-16 CN CN202120546674.7U patent/CN214620700U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204438360U (en) | A kind of air-conditioner outdoor unit reducing filling quantity of refrigerant | |
| CN111076570A (en) | Dry-type shell and tube evaporator | |
| CN214620700U (en) | Internal plate-fin heat exchanger with precooling function | |
| CN106895612A (en) | A kind of condenser of built-in oil eliminator | |
| CN219963984U (en) | Rectifying column cooling device | |
| WO2009009928A1 (en) | Condensing and heat transferring method having automatic liquid dividing function and apparatus thereof | |
| CN207785982U (en) | A kind of and direct-connected condenser/evaporator of rectifying column | |
| CN107137950B (en) | A kind of overhead condensation separator | |
| CN215216776U (en) | Evaporator with a heat exchanger | |
| KR880009254A (en) | Dual-effect air-cooled freezer | |
| CN212778071U (en) | Refrigerant separation and purification system capable of improving purification efficiency and air conditioning unit | |
| CN210512743U (en) | Novel explosion-proof heat exchanger | |
| CN201867086U (en) | Gas-liquid separation type air cooled condenser | |
| CN208720581U (en) | A kind of novel vertical-type evaporator | |
| CN111829075A (en) | Thin type air conditioner indoor heat exchange system | |
| CN111442657A (en) | Low-pressure vacuum condenser | |
| CN2748857Y (en) | Heat pipe insulation low pressure evaporator | |
| CN220507440U (en) | Cooling recoverer for water vacuum evaporation | |
| CN206167968U (en) | Distillation column embeds condensing equipment | |
| CN1288667C (en) | A moderator condenser using in vertical pore path of reactor cold neutron source | |
| CN219178341U (en) | Heat dissipating device and heat dissipating plate thereof | |
| CN214634125U (en) | Tower head condenser | |
| CN110307742A (en) | The plate-fin heat exchanger and heat-exchange method of multi-stage separation | |
| CN219283690U (en) | Efficient throttling evaporator | |
| CN207610438U (en) | A kind of energy-efficient shell and tube evaporator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |