Tubular heat exchange device

Abstract

The utility model discloses a tubular heat exchange device which comprises an outer sleeve, a heat exchange tube core mechanism is fixedly connected in a tube cavity of the outer sleeve, and in the heat exchange process, the heat exchange tube core mechanism is soaked in a medium entering the outer sleeve; the heat exchange tube core mechanism comprises tube frames arranged on the two sides at intervals, and a plurality of heat dissipation core tubes are fixedly connected between the tube frames. An annular flow dividing pipe is communicated between the liquid inlet ends of the heat dissipation core pipes, and an annular flow dividing pipe is communicated between the liquid outlet ends of the heat dissipation core pipes; the top of the annular flow dividing pipe communicates with a medium inlet pipe and a medium outlet pipe which penetrate through the outer sleeve. A plurality of flow choking covers are fixedly connected to the heat dissipation core pipe, and the direction of the flow choking covers is opposite to the flowing direction of media pumped into the outer sleeve. The flow choking cover is used for retaining a heat exchange medium and increasing the heat exchange efficiency; a plurality of through hole structures are formed in the flow choking cover. According to the device, the heat exchange efficiency is improved, a high-temperature medium can be rapidly subjected to heat exchange and cooling in a short time, and working equipment can work normally.

Description

Technical Field

[0001] The utility model belongs to the technical field of tubular heat exchangers, and particularly relates to a tubular heat exchange device. Background Art

[0002] A heat exchanger is a heat exchange device that can achieve the exchange between a refrigerant and a heat medium or between a heat medium and a refrigerant. Through the heat exchanger, functions such as cooling a high-temperature liquid or heating a low-temperature liquid can be realized to meet the working requirements of equipment.

[0003] According to its working principle, heat exchangers are mainly divided into heat exchangers with structures such as plate heat exchangers and tubular heat exchangers. Among them, the main structure of a tubular heat exchanger includes an outer tube body and an inner tube structure installed inside the outer tube body. During the working process, for example, a high-temperature heat medium is pumped into the inner tube structure from a working device, while a low-temperature medium is pumped into the outer tube body. After heat exchange with the high-temperature heat medium, the medium used by the working device is cooled while the heat energy is recycled.

[0004] Therefore, the advantages of a heat exchanger are energy conservation, environmental protection, and the realization of energy recovery and utilization.

[0005] However, during the actual working process, when the medium temperature generated by a working device during high-load operation is very high, at this time, the working medium to be pumped out needs to be quickly cooled, and the recovery and utilization of heat energy is secondary. However, most of the existing tubular heat exchangers are heat exchangers with the above-mentioned structures, which perform excellently in the conventional heat exchange process. However, once encountering a medium with a relatively high temperature and requiring rapid cooling, they simply cannot cool the high-temperature working medium in a short time.

[0006] Therefore, during the actual working process, by reducing the temperature of the refrigerant, the temperature difference with the high-temperature working medium is increased to achieve rapid cooling. However, the disadvantage of this method is that the temperature of the recycled refrigerant decreases during use, resulting in a significant increase in working energy consumption. Therefore, in this case, the energy conservation and environmental protection effects of the heat exchanger are not ideally reflected. Summary of the Utility Model

[0007] Based on the above background, the purpose of the utility model is to provide a tubular heat exchange device.

[0008] To achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A tubular heat exchange device includes an outer sleeve tube, and a heat exchange tube core mechanism is fixedly connected in the tube cavity of the outer sleeve tube. During the heat exchange process, the heat exchange tube core mechanism is immersed in the medium entering the outer sleeve tube.

[0010] The heat exchange tube core mechanism includes tube racks spaced apart on both sides, and a plurality of heat dissipation core tubes are fixedly connected between the tube racks.

[0011] An annular shunt pipe is connected between the liquid inlet ends of the heat dissipation core pipes, and an annular shunt pipe is connected between the liquid outlet ends of the heat dissipation core pipes;

[0012] The top parts of the annular shunt pipes are respectively connected with a medium inlet pipe and a medium outlet pipe that penetrate through the outer sleeve;

[0013] A number of flow blocking covers are fixedly connected to the heat dissipation core pipes, and the orientation of the flow blocking covers is opposite to the flowing direction of the medium pumped in the outer sleeve; the flow blocking covers are used for retaining the heat exchange medium and increasing the heat exchange efficiency;

[0014] A number of through hole structures are formed in the flow blocking covers.

[0015] Preferably, interface pipes are respectively connected to the front and rear ends of the heat dissipation core pipes, and the interface pipes are hermetically welded to the hole structures formed in the annular shunt pipes.

[0016] Preferably, the shape of the flow blocking cover is conical;

[0017] The flow blocking covers are welded to the heat dissipation core pipes.

[0018] Preferably, a medium pumping pipe is assembled and connected to the rear end of the outer sleeve, and a medium outlet pipe is assembled and connected to the front end of the outer sleeve.

[0019] Preferably, the cover opening of the flow blocking cover is arranged towards the rear side.

[0020] Preferably, a number of heat dissipation tooth plate structures are hermetically welded to the outer sleeve.

[0021] Preferably, the heat dissipation tooth plate structure includes a heat dissipation tooth plate, and a number of protruding tooth-shaped protrusions are integrally formed at the outer end of the heat dissipation tooth plate;

[0022] The inner end of the heat dissipation tooth plate is located inside the lumen of the outer sleeve.

[0023] Preferably, a number of long strip-shaped mounting holes are formed in the pipe wall of the outer sleeve, the heat dissipation tooth plates penetrate through the long strip-shaped mounting holes, and a hermetic welding is arranged between the heat dissipation tooth plates and the long strip-shaped mounting holes.

[0024] Preferably, the shape of the pipe rack is annular, and two inner and outer layers of heat dissipation core pipes are distributed between the pipe racks;

[0025] A number of heat dissipation core pipes are annularly distributed in each layer of heat dissipation core pipes.

[0026] The utility model has the following beneficial effects:

[0027] 1. The heat dissipation core tube (made of copper) is arranged in a double-layer manner to fully divert the high-temperature medium generated by the working equipment during the working process, that is, to increase the total amount of the high-temperature medium entering the cavity of the outer sleeve tube within the limited cavity of the outer sleeve tube. The flow rate of the low-temperature medium pumped into the working equipment per unit time is fixed. Therefore, in this way, it is realized that the low-temperature medium required by the working equipment can be continuously pumped into the working equipment in a low-temperature form without interruption.

[0028] 2. Through the flow-blocking cover with a conical structure, when the refrigerant fluid encounters the flow-blocking cover, under the blocking of the flow-blocking cover, at this time, the low-temperature medium is limited in the cavity of the flow-blocking cover, forming an instantaneous flow block. And under the blocking of the flow-blocking cover, the low-temperature medium can increase the heat exchange time with the heat dissipation core tube at the position of the flow-blocking cover.

[0029] Moreover, under the blocking of the flow-blocking cover, taking the flow-blocking cover as a heat dissipation unit, multiple and multi-segment heat dissipation units are formed on each heat dissipation core tube. In this way, the heat conduction is greatly improved.

[0030] 3. The flow-blocking cover is welded to the heat dissipation core tube, so there is also heat exchange between the flow-blocking cover and the heat dissipation core tube. This way realizes further increasing the heat exchange efficiency. Brief Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0032] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present invention;

[0033] Figure 2 It is a schematic diagram of the structure of the heat exchange tube core mechanism in the embodiment of the present invention;

[0034] Figure 3 It is a schematic diagram of the structure in which the flow-blocking cover is fixedly connected to the heat dissipation core tube in the embodiment of the present invention;

[0035] Figure 4 It is a schematic diagram of the structure of the flow-blocking cover in the embodiment of the present invention;

[0036] Figure 5 For the embodiment of the present invention Figure 2 The top view;

[0037] Figure 6 For the embodiment of the present invention Figure 1 The top view.

[0038] The realization, functional features, and advantages of the present utility model will be further described in conjunction with embodiments with reference to the accompanying drawings. Specific Embodiments

[0039] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0041] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0042] Embodiment 1

[0043] As Figures 1-6 shown, a tubular heat exchange device includes an outer sleeve 1. A heat exchange tube core mechanism is fixedly connected in the lumen of the outer sleeve 1. During the heat exchange process, the heat exchange tube core mechanism is immersed in the medium entering the outer sleeve 1. Specifically, it is the same as the existing heat exchange principle. The high-temperature medium generated by the working equipment is pumped into the heat exchange tube core mechanism, and the refrigerant pumped out by the refrigeration equipment enters the outer sleeve 1 in a circulating manner. During this process, the heat exchange tube core mechanism immersed in the refrigerant continuously exchanges heat with the refrigerant and then recirculates to the working equipment after cooling.

[0044] Specifically, the heat exchange tube core mechanism includes a pipe rack 23 with a ring structure spaced on both sides. A plurality of heat dissipation core tubes 24 are fixedly connected between the pipe racks 23. Specifically, in order to improve the heat dissipation effect, the shape of the pipe rack 23 is ring-shaped, and there are two layers of heat dissipation core tubes 24 distributed between the pipe racks 23; a plurality of heat dissipation core tubes 24 are annularly distributed in each layer of heat dissipation core tubes 24.

[0045] The heat dissipation core tube 24 (made of copper) is arranged in a double-layer manner to fully shunt the high-temperature medium generated by the working equipment during the working process, that is, to increase the total amount of high-temperature medium entering the cavity of the outer sleeve 1 within the limited cavity of the outer sleeve 1. The flow rate of the low-temperature medium pumped into the working equipment per unit time is fixed. Therefore, by this method, it is possible to ensure that the low-temperature medium required by the working equipment can be continuously pumped into the working equipment in a low-temperature state without interruption. This enables the working equipment to operate without stopping (when the medium temperature cannot reach the predetermined low temperature state, the equipment has to stop to avoid damage, such as a heat pump unit).

[0046] Specifically, an annular shunt pipe 25 is connected between the liquid inlet ends of the heat dissipation core tubes 24, and an annular shunt pipe 25 (the annular shunt pipe 25 has an annular cavity) is connected between the liquid outlet ends of the heat dissipation core tubes 24; the top parts of the annular shunt pipes 25 are respectively connected with a medium inlet pipe 21 and a medium outlet pipe 22 that penetrate through the outer sleeve 1. Specifically, interface pipes 251 are respectively connected to the front and rear ends of the heat dissipation core tube 24, and the interface pipes 251 are hermetically welded to the hole structures opened on the annular shunt pipe 25 (the interface pipes are assembled and connected to the hole structures by hermetic welding).

[0047] During the working process, the high-temperature heat medium generated by the working equipment is pumped in from the medium inlet pipe 21, and after heat exchange in the above-mentioned manner, the generated low-temperature medium is pumped out from the medium outlet pipe 22 and circulated back to the working equipment.

[0048] A pump medium pipe 11 is assembled and connected to the rear end of the outer sleeve 1, and an outlet medium pipe 12 is assembled and connected to the front end of the outer sleeve 1. The pump medium pipe 11 is used to pump in the refrigerant for heat exchange. After the refrigerant exchanges heat, its temperature rises to become a heat medium, and the heat medium circulates back to the refrigeration equipment, such as in a refrigerant.

[0049] Embodiment 2

[0050] As Figures 1-6 shown, on the basis of the structure of Embodiment 1 in this embodiment, in order to improve the heat exchange efficiency, a plurality of flow resistance covers 241 (the flow resistance covers 241 are welded to the heat dissipation core tube 24) are fixedly connected to each heat dissipation core tube 24, and the orientation of the flow resistance covers 241 is opposite to the flow direction of the pumped medium in the outer sleeve 1; the flow resistance covers 241 are used to retain the heat exchange medium and increase the heat exchange efficiency. The cover openings of the flow resistance covers 241 are arranged towards the rear side, while the flow direction of the refrigerant in the outer sleeve 1 is from the rear side to the front side. Therefore, the flow resistance covers 241 form an instantaneous flow resistance to the oncoming fluid.

[0051] Specifically, the refrigeration equipment pumps the refrigerant into the outer sleeve 1, and the refrigerant circulates back to the working equipment from the outlet medium pipe. Through the flow-blocking cover 241 with a conical structure, when the refrigerant fluid encounters the flow-blocking cover 241, under the blockage of the flow-blocking cover 241, the low-temperature medium is limited in the cavity of the flow-blocking cover 241 at this time, forming an instantaneous flow block. And under the blockage of the flow-blocking cover 241, the low-temperature medium can be kept to increase the heat exchange time with the heat dissipation core tube 24 where the flow-blocking cover 241 is located.

[0052] Moreover, under the blockage of the flow-blocking cover 241, taking the flow-blocking cover 241 as a heat dissipation unit, multiple and multi-segment heat dissipation units are formed on each heat dissipation core tube 24. In this way, the heat conduction is greatly improved.

[0053] A number of through-hole structures 2411 are formed on the above-mentioned flow-blocking cover 241. The through-hole structure 2411 is in a strip shape, which can realize flow block and temperature reduction while avoiding the situation that the fluid cannot flow in time, resulting in excessive local temperature in the cavity of the flow-blocking cover 241 after heat exchange.

[0054] Moreover, the flow-blocking cover 241 is welded to the heat dissipation core tube 24, so there is also heat exchange between the flow-blocking cover 241 and the heat dissipation core tube 24, and this way can further increase the heat exchange efficiency.

[0055] Embodiment 3

[0056] As Figures 1-6 shown, on the basis of the structure of Embodiment 2 in this embodiment, in order to prevent the refrigerant in the outer sleeve 1 from having too large a temperature rise due to heat exchange, resulting in too large cooling energy consumption of the refrigeration equipment, a number of heat dissipation tooth plate structures are hermetically welded on the above-mentioned outer sleeve 1. During the heat exchange process, when the refrigerant temperature rises, the heat dissipation tooth plate structure is used to preliminarily cool the refrigerant and the external environment. Specifically, the heat dissipation tooth plate structure includes a heat dissipation tooth plate 3, and a number of protruding tooth-shaped protrusions 31 are integrally formed at the outer end of the heat dissipation tooth plate 3. The tooth-shaped structure design can improve the heat exchange efficiency with the air. The air can flow between the gaps between the tooth-shaped protrusions 31, thereby increasing the heat dissipation.

[0057] Specifically, the inner end of the heat dissipation tooth plate 3 is located inside the tube cavity of the outer sleeve 1 (the tube support 23 is supported and fixed between the inner ends of the heat dissipation tooth plate 3). A number of long strip-shaped mounting holes are formed on the tube wall of the outer sleeve 1, and the heat dissipation tooth plate 3 penetrates through the long strip-shaped mounting holes, and the heat dissipation tooth plate 3 and the long strip-shaped mounting holes are hermetically welded.

[0058] This way enables the inner end of the heat dissipation tooth plate 3 to be directly immersed in the refrigerant. Therefore, in the direct contact mode with the refrigerant, when the temperature of the refrigerant increases greatly, it can quickly conduct heat to the outer end of the heat dissipation tooth plate 3, and then realize heat exchange with the air.

[0059] Certainly, the above description is not a limitation to the present utility model, nor is the present utility model limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the scope of the essence of the present utility model shall also fall within the protection scope of the present utility model.

Claims

1. A tubular heat exchange device, characterized in that, It includes an outer sleeve, and a heat exchange tube core mechanism is fixedly connected inside the lumen of the outer sleeve. During the heat exchange process, the heat exchange tube core mechanism is immersed in the medium entering the outer sleeve. The heat exchange tube core mechanism includes tube racks spaced apart on both sides, and a number of heat dissipation core tubes are fixedly connected between the tube racks. An annular shunt tube is connected in communication between the liquid inlet ends of the heat dissipation core tubes, and an annular shunt tube is connected in communication between the liquid outlet ends of the heat dissipation core tubes. The top parts of the annular shunt tubes are respectively connected in communication with a medium inlet tube and a medium outlet tube that penetrate through the outer sleeve. A number of flow blocking covers are fixedly connected to the heat dissipation core tubes, and the orientation of the flow blocking covers is opposite to the flow direction of the pumped medium in the outer sleeve; the flow blocking covers are used to retain the heat exchange medium and increase the heat exchange efficiency. A number of through-hole structures are provided on the flow blocking covers.

2. The tubular heat exchange device according to claim 1, wherein The front and rear ends of the heat dissipation core tubes are respectively connected in communication with interface tubes, and the interface tubes are sealed and welded to the hole structures provided on the annular shunt tubes.

3. The tubular heat exchange device according to claim 1, characterized in that, The shape of the flow blocking cover is conical. The flow blocking cover is welded to the heat dissipation core tube.

4. The tubular heat exchange device according to claim 3, wherein A medium pumping tube is assembled and connected to the rear end of the outer sleeve, and a medium outlet tube is assembled and connected to the front end of the outer sleeve.

5. The tubular heat exchange device according to claim 4, characterized in that, The cover opening of the flow blocking cover is arranged towards the rear side.

6. The tubular heat exchange device according to claim 1, characterized in that, A number of heat dissipation tooth plate structures are sealed and welded to the outer sleeve.

7. The tubular heat exchange device according to claim 6, characterized in that, The heat dissipation tooth plate structure includes a heat dissipation tooth plate, and a number of protruding tooth-shaped protrusions are integrally formed at the outer end of the heat dissipation tooth plate. The inner end of the heat dissipation tooth plate is located inside the lumen of the outer sleeve.

8. The tubular heat exchange device according to claim 7, wherein, A number of long strip-shaped mounting holes are provided on the tube wall of the outer sleeve, the heat dissipation tooth plate penetrates through the long strip-shaped mounting holes, and a sealed welding arrangement is provided between the heat dissipation tooth plate and the long strip-shaped mounting holes.

9. The tubular heat exchange device according to claim 1, characterized in that, The shape of the tube rack is annular, and there are two inner and outer layers of heat dissipation core tubes distributed between the tube racks. A number of heat dissipation core tubes are annularly distributed in each layer of heat dissipation core tubes.

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