Integrated heat preservation device for heat exchanger
By using an integrated insulation device with perlite filler and a nitrogen supply mechanism, the problem of time-consuming and labor-intensive heat exchanger insulation is solved, achieving low-cost and high-efficiency insulation, avoiding frost and ice formation, and ensuring stable operation.
Patent Information
- Application Number
- CN202422976162.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-04
AI Technical Summary
Existing heat exchanger insulation methods are time-consuming and labor-intensive, with high labor and material costs, and the insulation effect is not satisfactory. In particular, conventional materials cannot withstand ultra-low temperatures in liquid nitrogen condensation technology, and the construction cycle is long and difficult.
An integrated insulation device is adopted, which uses perlite insulation filler to fill the insulation shell and maintains a slightly positive pressure state through a nitrogen supply mechanism to prevent external air from contacting it. Combined with a venting mechanism to regulate gas discharge, stable insulation is achieved.
It simplifies the operation process, reduces labor and material costs, improves the insulation effect, avoids frost and ice formation, and has good operational stability.
Smart Images
Figure CN223525650U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to heat exchanger heat preservation technical field especially relates to a heat exchanger integrated heat preservation device. BACKGROUND
[0002] Liquid nitrogen condensation technology is a new technology applied in VOCs process tail gas treatment. In this technology, low temperature heat exchange as low as -196 DEG C is involved, so the low temperature devices and pipelines of the liquid nitrogen condensation device need to be insulated and heat preserved to achieve the dual purposes of preventing low temperature burns and reducing cold loss. At present, when heat preservation is performed on the super-low temperature heat exchanger device in the liquid nitrogen condensation technology, the heat exchanger system needs to be wrapped with heat preservation materials first, and then aluminum skin is wrapped outside to provide protection and waterproof treatment. Since the heat exchanger has many components and the connecting pipelines are complex, such heat preservation method is not only time-consuming and labor-intensive, but also high in labor cost. Moreover, the heat preservation materials need to be adapted to the shapes of the heat exchanger pipelines and components to achieve the wrapping and heat preservation effect. In addition, conventional rubber sponge or polyurethane material cannot withstand such low temperature application scenarios, so the heat preservation material needs to be polyisocyanurate (PIR) resistant to super-low temperature, which is formed into the required shape before use. The material cost is high, the construction period is long, the difficulty is great, and the heat preservation effect is still unsatisfactory. SUMMARY
[0003] The technical problem to be solved by the utility model is to provide a heat exchanger integrated heat preservation device, which aims to solve the technical problem of time-consuming and labor-intensive traditional heat preservation method, high labor and material cost, and unsatisfactory heat preservation effect in the prior art.
[0004] The technical scheme of the utility model is as follows: a heat exchanger integrated heat preservation device, which comprises a heat preservation shell, the inside of the heat preservation shell has an upper installation space, a lower installation space and a lower maintenance space which are separated from each other, the three spaces are used for distributing and installing a heat exchanger body, a maintenance door for closing the lower maintenance space is arranged at the bottom of one side of the heat preservation shell, heat preservation fillers are filled in the upper installation space and the lower installation space respectively, a nitrogen gas supply mechanism is arranged in the lower maintenance space, the nitrogen gas supply mechanism is in communication with the upper installation space and the lower installation space respectively, the upper installation space and the lower installation space are in communication with each other, a gas release mechanism is arranged at the top of the upper installation space, the nitrogen gas supply mechanism always provides nitrogen gas for the upper installation space and the lower installation space and cooperates with the gas release mechanism to ensure that the two installation spaces are in a slightly positive pressure state.
[0005] Further, the inside of the heat preservation shell is provided with a horizontal partition plate and a vertical partition plate, the horizontal partition plate is in sealing connection with the inner walls of the heat preservation shell around, and the top edge of the vertical partition plate is in sealing connection with the horizontal partition plate, and the bottom edge and the two side edges are in sealing connection with the inner walls of the heat preservation shell respectively.
[0006] Further, the heat preservation filler is pearlite heat preservation filler.
[0007] Further, the horizontal partition plate above the lower maintenance space is provided with a first communication pipe, the vertical partition plate is provided with a second communication pipe, the nitrogen gas supply mechanism comprises a nitrogen gas supply pipeline, two nitrogen gas supply valves connected with the nitrogen gas supply pipeline, and the two nitrogen gas supply valves are connected with the first communication pipe and the second communication pipe through connecting pipelines respectively.
[0008] Further, the horizontal partition plate above the lower maintenance space is provided with a first communication pipe, the vertical partition plate is provided with a second communication pipe, the nitrogen gas supply mechanism comprises a nitrogen gas supply pipeline, two nitrogen gas supply valves connected with the nitrogen gas supply pipeline, and the two nitrogen gas supply valves are connected with the first communication pipe and the second communication pipe through connecting pipelines respectively.
[0009] Further, the air release mechanism comprises an air release pipe mounted on the top of the heat preservation shell, a cover plate covered on the air release pipe, a plurality of studs arranged around the air release pipe, a limiting plate threadedly connected on each stud, and the limiting plate is partially located above the cover plate and used for limiting the upward stroke of the cover plate.
[0010] Further, the air release pipe is provided with a second filter screen for blocking the heat preservation filler.
[0011] Further, the top of the heat preservation shell is provided with a large-diameter filler feeding opening and a small-diameter filler feeding pipe which are in communication with the upper mounting space, and the middle and lower parts of the heat preservation shell are provided with a first filler discharging pipe and a second filler discharging pipe which are in communication with the upper mounting space.
[0012] Further, the heat preservation shell is provided with a lower filler feeding pipe and a lower filler discharging pipe which are in communication with the lower mounting space, the lower filler feeding pipe passes through the horizontal partition plate from the upper mounting space, the horizontal partition plate is provided with a partition plate feeding opening, the lower filler feeding pipe is connected with the partition plate feeding opening, the lower filler feeding pipe is in communication with the lower mounting space through the partition plate feeding opening, and the lower filler discharging pipe is connected with the bottom of the heat preservation shell.
[0013] Compared with the prior art, the utility model has the following advantages: the utility model can install the heat exchanger body mostly in the heat preservation shell, carry out integral heat preservation, fill the heat preservation shell with the pearlescent sand heat preservation filler with very small particle size, good heat preservation performance, cooperate with the nitrogen gas filled continuously, can isolate external air, avoid the frost and ice on the equipment outside after the water-containing air contacts the low-temperature heat exchanger surface, influence the heat preservation performance of the device, after the filler is filled, the nitrogen gas is in the ventilation state all the time, the cover plate on the top air release pipe can cooperate and exhaust, and utilize the dead weight and fall back, make two installation spaces are in the slightly positive pressure state all the time, the device runs stably, compared with the traditional heat preservation mode, the utility model discloses the integral heat preservation device simple operation of saving labor, greatly reduces the labor and material cost, and the heat preservation effect is good. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the perspective view of the utility model;
[0015] Figure 2 It is the internal structure schematic view of the heat preservation shell in the utility model;
[0016] Figure 3 It is the internal structure schematic view of the lower maintenance space in the utility model;
[0017] Figure 4 It is the specific setting schematic view of the first communication pipe in the utility model;
[0018] Figure 5 It is the internal structure schematic view of the lower installation space in the utility model;
[0019] Figure 6 It is Figure 5 The local enlarged schematic view of A part in the utility model;
[0020] Figure 7 It is the specific setting schematic view of the third communication pipe in the utility model;
[0021] Figure 8 It is the specific structure schematic view of the air release mechanism in the utility model;
[0022] Figure 9 It is the perspective view of another view of the utility model;
[0023] Figure 10 It is the specific setting schematic view of the lower filler feeding pipe in the utility model.
[0024] Wherein: 1, heat preservation shell; 1a, upper mounting space; 1b, lower mounting space; 1c, lower maintenance space; 2, maintenance door; 3, horizontal partition; 3a, partition feeding port; 4, vertical partition; 5, first communication pipe; 6, second communication pipe; 7, nitrogen gas supply pipeline; 8, nitrogen gas supply valve; 9, third communication pipe; 10, air release mechanism; 101, air release pipe; 102, cover plate; 103, stud; 104, limiting plate; 11, large-diameter filler feeding port; 12, small-diameter filler feeding pipe; 13, first filler discharge pipe; 14, second filler discharge pipe; 15, lower filler feeding pipe; 16, lower filler discharge pipe; a, heat exchanger body. DETAILED DESCRIPTION
[0025] The specific embodiments of the heat exchanger integrated heat preservation device of the present application will be described in detail below with reference to the accompanying drawings.
[0026] Embodiment:
[0027] The specific embodiments of the heat exchanger integrated heat preservation device of the present application will be described in detail below with reference to the accompanying drawings. Figure 1 、 Figure 2 , which mainly comprises a heat preservation shell 1, the inside of the heat preservation shell 1 is provided with a horizontal partition 3 and a vertical partition 4, the horizontal partition 3 is sealingly connected with the inner wall of the heat preservation shell 1 around, the top edge of the vertical partition 4 is sealingly connected with the bottom of the horizontal partition 3, and the bottom edge and the two side edges of the vertical partition 4 are respectively sealingly connected with the inner wall of the heat preservation shell 1.
[0028] The inside of the heat preservation shell 1 is divided into an upper mounting space 1a, a lower mounting space 1b and a lower maintenance space 1c by the horizontal partition 3 and the vertical partition 4, the main operating part of the heat exchanger body a is distributed and mounted in the upper mounting space 1a and the lower mounting space 1b, the part needing maintenance of the heat exchanger body a is mounted in the lower maintenance space 1c, and when the heat exchanger body a is distributed and mounted in the three spaces, the heat exchanger body a is sealingly connected with the horizontal partition 3 and the vertical partition 4, and when the part of the heat exchanger body a outside the heat preservation shell 1 is connected with the part inside the heat preservation shell 1, the heat exchanger body a is also sealingly connected with the heat preservation shell 1, so as to ensure the heat preservation performance of the device. The bottom of one side of the heat preservation shell 1 is provided with a maintenance door 2, which is used for closing the lower maintenance space 1c and facilitating personnel to enter the lower maintenance space 1c to perform maintenance work.
[0029] Not shown, the upper mounting space 1a and the lower mounting space 1b are respectively filled with heat preservation filler, and the heat preservation filler is pearl sand heat preservation filler.
[0030] Referring to Figure 2 、 Figure 3 、 Figure 4, the horizontal partition plate 3 above the lower maintenance space 1c is provided with a first communication pipe 5, and the vertical partition plate 4 is provided with a second communication pipe 6. A nitrogen gas supply mechanism is arranged in the lower maintenance space 1c, which comprises a nitrogen gas supply pipeline 7, two nitrogen gas supply valves 8 connected with the nitrogen gas supply pipeline 7, and the two nitrogen gas supply valves 8 are connected with the first communication pipe 5 and the second communication pipe 6 through connecting pipelines respectively, Figure 3 The nitrogen gas in the nitrogen gas supply pipeline 7 is respectively introduced into the first communication pipe 5 and the second communication pipe 6 through the two nitrogen gas supply valves 8, and then into the upper installation space 1a and the lower installation space 1b respectively.
[0031] Referring to Figure 2 , Figure 5 , Figure 6 , Figure 7 , the horizontal partition plate 3 above the lower installation space 1b is provided with a third communication pipe 9, which makes the upper installation space 1a and the lower installation space 1b communicate with each other, and the nitrogen gas can flow in the two installation spaces. Not shown, the third communication pipe 9 is provided with a first filter screen for blocking the thermal insulation filler, which cannot pass through, and the nitrogen gas can pass through.
[0032] Referring to Figure 1 , Figure 8 , the top of the thermal insulation shell 1 is provided with a gas discharge mechanism 10, which comprises a gas discharge pipe 101 connected with the upper installation space 1a, a cover plate 102 arranged on the gas discharge pipe 101, and a plurality of threaded studs 103 arranged around the gas discharge pipe 101, each of which is threadedly connected with a limiting plate 104, and the limiting plate 104 is partially above the cover plate 102 and is used to limit the upward stroke of the cover plate 102. When the gas in the gas discharge pipe 101 pushes the cover plate 102 upward, the limiting plate 104 prevents the cover plate 102 from continuing to open upward, and after the gas is discharged, the cover plate 102 falls back to the gas discharge pipe 101 by gravity. Not shown, the gas discharge pipe 101 is provided with a second filter screen for blocking the thermal insulation filler, which cannot pass through, and the nitrogen gas can pass through.
[0033] Referring to Figure 1 , Figure 9 , Figure 10 , the top of the thermal insulation shell 1 is provided with a large-diameter filler feeding port 11 and a small-diameter filler feeding pipe 12, and the two side walls of the middle and lower parts of the thermal insulation shell 1 are respectively provided with a first filler discharge pipe 13 and a second filler discharge pipe 14, and the large-diameter filler feeding port 11, the small-diameter filler feeding pipe 12, the first filler discharge pipe 13 and the second filler discharge pipe 14 are respectively connected with the upper installation space 1a. When filling the filler into the upper installation space 1a, first, the pearlite thermal insulation filler is added through the large-diameter filler feeding port 11, and then the whole upper installation space 1a is filled with the small-diameter filler feeding pipe 12, which is more rapid.
[0034] The lower filler feeding pipe 15 is connected with the lower filler discharging pipe 16, and the lower filler feeding pipe 15 is connected with the partition feeding opening 3a and communicates with the lower installation space 1b through the partition feeding opening 3a.
[0035] The heat exchanger body a is integrally installed in the heat preservation shell 1, and the heat exchanger body a is integrally heat preserved, the pearl sand filler with small particle size is filled in the upper installation space 1a and the lower installation space 1b of the heat preservation shell 1, the main body of the heat exchanger body a is fully heat preserved, the nitrogen gas supply mechanism in the lower maintenance space 1c is matched, nitrogen gas is continuously filled into the upper installation space 1a and the lower installation space 1b through the two nitrogen gas supply valves 8, the nitrogen gas can flow in the upper and lower installation spaces, the main body of the heat exchanger body a is isolated from external air, water-containing air is prevented from contacting the low-temperature heat exchanger surface and then frosting and icing on the equipment, and the heat preservation performance of the device is affected. After the filler is filled into the upper installation space 1a and the lower installation space 1b, the nitrogen gas is always in a ventilation state, the gas will lift the cover plate 102 upward during exhaust, the limiting plate 104 is used for controlling the upward stroke of the cover plate 102, the cover plate 102 falls back by gravity after exhaust, and is covered on the exhaust pipe 101 again, the height position of the limiting plate 104 on the stud 103 can adjust the slow degree of exhaust, and the upper installation space 1a and the lower installation space 1b are always in a micro-positive pressure state under the cooperation of the nitrogen gas supply mechanism and the exhaust mechanism 10. The device is stable in operation, compared with the traditional heat preservation mode, the integrated heat preservation device is simple in operation, can greatly reduce the labor and material costs, and has better heat preservation effect.
[0036] Of course, the above-mentioned embodiments are only for illustrating the technical concept and characteristics of the utility model, the purpose is to enable the person skilled in the art to understand the content of the utility model and to implement, and cannot limit the protection scope of the utility model. Any modification made according to the spirit and essence of the main technical scheme of the utility model should be covered in the protection scope of the utility model.
Claims
1. A heat exchanger integrated heat preservation device, characterized in that: The application relates to a heat-insulating shell (1) which has an upper installation space (1a), a lower installation space (1b) and a lower maintenance space (1c) which are separated from each other, the three spaces being used for distributing heat exchanger bodies (a), a maintenance door (2) being arranged at the bottom of one side of the heat-insulating shell (1) and used for closing the lower maintenance space (1c), heat-insulating fillers being filled in the upper installation space (1a) and the lower installation space (1b) respectively, a nitrogen gas supply mechanism being arranged in the lower maintenance space (1c) and being communicated with the upper installation space (1a) and the lower installation space (1b) respectively, the upper installation space (1a) and the lower installation space (1b) being communicated with each other, a nitrogen gas exhaust mechanism (10) being arranged at the top of the upper installation space (1a), and the nitrogen gas supply mechanism always supplying nitrogen gas to the upper installation space (1a) and the lower installation space (1b) and cooperating with the nitrogen gas exhaust mechanism (10) to ensure that the two installation spaces are in a slightly positive pressure state.
2. The heat exchanger integrated heat retaining device according to claim 1, characterized in that: The heat-insulating shell (1) is internally provided with a horizontal partition plate (3) and a vertical partition plate (4), the horizontal partition plate (3) is sealingly connected with the inner wall of the heat-insulating shell (1), and the top edge of the vertical partition plate (4) is sealingly connected with the horizontal partition plate (3), and the bottom edge and the two side edges of the vertical partition plate (4) are sealingly connected with the inner wall of the heat-insulating shell (1) respectively.
3. The heat exchanger integrated heat retaining device according to claim 1, characterized in that: The heat-insulating filler is a pearl sand heat-insulating filler.
4. The heat exchanger integrated heat retaining device according to claim 2, characterized in that: A first communication pipe (5) is arranged on the horizontal partition plate (3) above the lower maintenance space (1c), a second communication pipe (6) is arranged on the vertical partition plate (4), the nitrogen gas supply mechanism comprises a nitrogen gas supply pipeline (7) and two nitrogen gas supply valves (8) connected with the nitrogen gas supply pipeline (7), and the two nitrogen gas supply valves (8) are connected with the first communication pipe (5) and the second communication pipe (6) through connecting pipelines respectively.
5. The heat exchanger integrated heat retaining device according to claim 2, characterized in that: A third communication pipe (9) is arranged on the horizontal partition plate (3) above the lower installation space (1b), and a first filter screen for blocking the heat-insulating filler is arranged in the third communication pipe (9).
6. The heat exchanger integrated heat retaining device according to claim 1, characterized in that: The nitrogen gas exhaust mechanism (10) comprises a nitrogen gas exhaust pipe (101) arranged at the top of the heat-insulating shell (1) and a cover plate (102) arranged on the nitrogen gas exhaust pipe (101), a plurality of threaded rods (103) are arranged around the nitrogen gas exhaust pipe (101), a limiting plate (104) is threadedly connected to each threaded rod (103), and the limiting plate (104) is partially arranged above the cover plate (102) and used for limiting the upward stroke of the cover plate (102).
7. The heat exchanger integrated heat retaining device according to claim 6, characterized in that: A second filter screen for blocking the heat-insulating filler is arranged in the nitrogen gas exhaust pipe (101).
8. The heat exchanger integrated heat retaining device according to claim 1, characterized in that: A large-diameter filler feeding opening (11) and a small-diameter filler feeding pipe (12) are arranged at the top of the heat-insulating shell (1) and are communicated with the upper installation space (1a), and a first filler discharging pipe (13) and a second filler discharging pipe (14) are arranged at the middle and lower part of the heat-insulating shell (1) and are communicated with the upper installation space (1a).
9. The heat exchanger integrated heat retaining device according to claim 2, characterized in that: The heat preservation shell (1) is provided with a lower filler feeding pipe (15) and a lower filler discharging pipe (16) which are communicated with the lower mounting space (1b), the lower filler feeding pipe (15) penetrates from the upper mounting space (1a) to the horizontal partition plate (3), the horizontal partition plate (3) is provided with a partition plate feeding opening (3a), the lower filler feeding pipe (15) is connected with the partition plate feeding opening (3a), the lower filler feeding pipe (15) is communicated with the lower mounting space (1b) through the partition plate feeding opening (3a), and the lower filler discharging pipe (16) is connected to the bottom of the heat preservation shell (1).