CN214199773U

CN214199773U - Heat-resistant corrosion-resistant heat exchanger

Info

Publication number: CN214199773U
Application number: CN202022160413.XU
Authority: CN
Inventors: 张路平; 梁跃
Original assignee: Guangzhou Et Heat Exchanger Co ltd
Current assignee: Guangzhou Et Heat Exchanger Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-09-14
Anticipated expiration: 2030-09-27

Abstract

The utility model provides a heat-resisting corrosion-resistant type heat exchanger, including casing, heat exchange tube, first medium import connector, first medium outlet connection, second medium import connector and second medium outlet connection, be equipped with the heat transfer chamber in the casing, the heat exchange tube is located in the heat transfer chamber, and the heat exchange tube is the heliciform and coils and form a heat transfer section of thick bamboo, and first medium import connector and first medium outlet connection run through the lateral wall of casing and be connected with the both ends of heat exchange tube respectively, second medium import connector and second medium outlet connection respectively with the casing be connected and with the heat transfer chamber is linked together, the casing is the PPR casing, the heat exchange tube is the titanium pipe; the heat-resistant corrosion-resistant heat exchanger has the advantages of reasonable structure, good corrosion resistance and high heat exchange efficiency.

Description

Heat-resistant corrosion-resistant heat exchanger

Technical Field

The utility model belongs to the technical field of the indirect heating equipment, concretely relates to heat-resisting corrosion-resistant type heat exchanger.

Background

A heat exchanger, also called a heat exchanger, is a device that transfers heat between two or more media at different temperatures. The heat exchanger plays an important role in chemical industry, petroleum industry, power industry, food industry and other industrial production, and can be used as a heater, a cooler, a condenser, an evaporator, a reboiler and the like. Such as those known in the art, the evaporator and condenser of the indoor unit and the outdoor unit are one of the heat exchangers. The types of the heat exchangers mainly include a shell-and-tube type, a plate type, a spray type, a sleeve type and the like, wherein the shell-and-tube type heat exchanger has the advantages of simple composition structure and convenience in manufacturing, so that the shell-and-tube type heat exchanger has a wider application range, and is used in an air conditioning unit, a heat pump hot water unit, an industrial water chilling unit, a ground source or water source hot water unit. However, the double pipe heat exchanger in the prior art has the disadvantage of poor corrosion resistance when in use, and is particularly used in a sailing ship or a swimming pool, and the main reasons are as follows: in the prior art, most heat exchangers are made of steel, and water serving as a second medium often contains various impurities such as various ions, oxygen and salts, and the corrosion of the water on the heat exchangers can be accelerated by combining the impurities; for example, anions such as CL-, Br, H + and oxygen existing in water can damage a passive film on the inner surface of the shell so as to form ulcer-shaped corrosion on the shell until perforation leakage is formed, and particularly, the flow rate of the second medium in the outer sleeve is relatively high, so that the corrosion process is accelerated, and the service life of the heat exchanger is shortened; when the metal is used as the shell of the heat exchanger, the heat conduction effect of the metal is relatively good, so that the heat emission and loss of the heat exchanger during heat exchange can be increased, and the heat exchange efficiency of the heat exchanger is reduced. Secondly, although the PCT material is used as the shell of the heat exchanger in the market, the PCT can bear lower water temperature, so that the application of the heat exchanger is limited, and the heat exchanger can only be applied to occasions with lower water temperature.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a rational in infrastructure, heat-resisting corrosion resisting property is good and can improve heat exchange efficiency's heat exchanger.

In order to solve the technical problem, the utility model discloses the technical scheme who uses is:

the utility model provides a heat-resisting corrosion-resistant type heat exchanger, includes casing, heat exchange tube, first medium access connection, first medium outlet connection, second medium access connection and second medium outlet connection, be equipped with the heat transfer chamber in the casing, the heat exchange tube is located the heat transfer intracavity, just the heat exchange tube is the heliciform and coils and form a heat transfer section of thick bamboo, first medium access connection and first medium outlet connection run through the lateral wall of casing and respectively with the both ends of heat exchange tube are connected, second medium access connection and second medium outlet connection respectively with the casing is connected and with the heat transfer chamber is linked together, the casing is the PPR casing, the heat exchange tube is the titanium pipe.

As a further improvement to the heat exchanger, the heat exchange tubes are wound in multiple layers with respect to a radial direction of the heat exchange tube, and one end of the heat exchange tube extends to the other end with respect to one end in an axial direction of the housing.

As a further improvement on the heat exchanger, an isolation lining cylinder is further arranged in the heat exchange cavity, the heat exchange cylinder is sleeved outside the isolation lining cylinder, and the isolation lining cylinder and the shell are sealed and fixed.

As a further improvement to the heat exchanger, the second medium inlet connection is connected to the bottom of the housing, and the second medium outlet connection is connected to the top of the housing.

As a further improvement of the heat exchanger, the shell is further provided with a first temperature sensing tube and a second temperature sensing tube, the first temperature sensing tube and the second temperature sensing tube are both connected with the shell and extend into the heat exchange cavity, the first temperature sensing tube is close to the second medium inlet joint, and the second temperature sensing tube is close to the second medium outlet joint.

As a further improvement of the heat exchanger, the outer wall or the inner wall of the heat exchange tube is also provided with grooves which are arranged relative to the length direction of the heat exchange tube.

As a further improvement to the heat exchanger, the shell is further provided with a base, and the base is fixed at the bottom of the shell.

The beneficial effects of the utility model are mainly embodied in that: because the shell made of the PPR material and the heat exchange tube made of the titanium material are arranged, the PPR and the titanium have good corrosion resistance, the service life of the heat exchanger can be effectively prolonged, and secondly, the heat conductivity coefficient of the PPR is much lower than that of metal, so that when the PPR is used as the shell of the heat exchanger, a heat insulation layer can be prevented from being arranged outside the shell or the thickness of the heat insulation layer is reduced, so that the heat loss of the heat exchanger during working is reduced, namely the heat exchange efficiency is improved; meanwhile, the PPR is taken as the shell of the heat exchanger, so that the consumption of metal during the manufacture of the heat exchanger can be effectively reduced, namely the production cost of the heat exchanger is reduced; and secondly, when the PPR is used as the shell of the heat exchanger, the PPR can stably work at about 90 degrees for a long time, so that the heat exchanger can work at a higher water temperature, and the applicability of the heat exchanger is improved.

Drawings

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 is a schematic cross-sectional structural view of a heat-resistant corrosion-resistant heat exchanger of the present invention;

fig. 2 is a partial sectional view of a heat exchanger of the present invention;

fig. 3 is a schematic view of the overall structure of the heat-resistant corrosion-resistant heat exchanger of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the illustrated embodiments are not intended to limit the present invention, and in the present embodiments, it is understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and only describe the present invention, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention; in addition, in the present embodiment, if the connection or fixing manner between the components is not specifically described, the connection or fixing manner may be a bolt fixing manner, a welding fixing manner, a pin fixing manner, or the like, which is commonly used in the prior art, and therefore, detailed description thereof is omitted in this embodiment.

As shown in fig. 1 to 3, the present embodiment provides a heat-resistant corrosion-resistant type heat exchanger, including a casing 1, a heat exchange tube 2, a first medium inlet joint 3, a first medium outlet joint 4, a second medium inlet joint 5, and a second medium outlet joint 6; wherein, be equipped with heat transfer chamber 11 in the casing 1, heat exchange tube 2 is located heat transfer chamber 11, and heat exchange tube 2 is the heliciform and coils and form a heat transfer section of thick bamboo, and first medium access connection 3 and first medium outlet connection 4 run through the lateral wall of casing 1 and are connected with the both ends of heat exchange tube 2 respectively, and second medium access connection 5 and second medium outlet connection 6 are connected with casing 1 respectively and are linked together with heat transfer chamber 11, and casing 1 is PPR casing 1, and heat exchange tube 2 is the titanium pipe. When the titanium tube is used as the heat exchange tube 2, the titanium tube can bear the high pressure of a first medium in the tube and can resist and unload impurities in a second medium (water) outside the tube to corrode the first medium. The heat exchange tube 2 is further provided with grooves (not shown) on the outer wall and/or the inner wall, the grooves are arranged in the length direction of the heat exchange tube 2, and the grooves can increase the surface area of the heat exchange tube, such as a threaded tube, so that the heat exchange efficiency between the first medium and the second medium can be further improved. The shell 1 is also provided with a base 8, and the base 8 is fixed at the bottom of the shell 1. In the embodiment, the PPR is short for tripropylene polypropylene, also called as random copolymerization polypropylene, and the shell 1 made of the PPR has the advantages of high temperature resistance, high pressure resistance, corrosion resistance and no scaling; specifically, when the PPR material is used as the shell 1 of the heat exchanger, the second medium (water) can be used for a long time when the temperature of the second medium is 70 degrees, and can bear the water temperature of 95 degrees when the second medium (water) works for a short time, but cannot bear the temperature when the PVC material is used; namely, when the heat exchanger is used in a hot water unit, the shell 1 of the heat exchanger can bear higher working water temperature.

Secondly, compared with the traditional shell 1 made of steel, impurities in water as a second medium, such as chloride ions, magnesium ions, oxygen, salts and the like, cannot corrode the PPR shell 1; moreover, the water which passes through the heat exchange cavity 11 of the shell 1 and is used as a second medium only participates in the circulation of heat exchange and does not need pressure bearing, so that the shell 1 made of PPR material can meet the long-term reliable use requirement of the heat exchanger. Meanwhile, the heat conductivity coefficient of the shell 1 made of the PPR material is much lower than that of a metal shell, so that when the shell 1 made of the PPR material is used, the situation that a heat insulation layer is arranged outside the shell 1 or the thickness of the heat insulation layer is reduced so as to reduce the heat of the second medium from being dissipated to the environment can be avoided, and the heat exchange efficiency of the heat exchanger is improved; and meanwhile, when the PPR is used as the shell 1, the consumption of metal during the manufacture of the heat exchanger can be effectively reduced, namely, the production cost of the heat exchanger is reduced.

As shown in fig. 1, in the preferred embodiment, the heat exchange tubes 2 are wound in multiple layers with respect to the radial direction of the heat exchange tube or housing 1, and one end of the heat exchange tube extends to the other end with respect to the axial direction of the housing 1. The heat exchange tube 2 is spirally wound to form a cylinder shape, so that the area of the heat exchange tube 2 in the heat exchange cavity 11 can be effectively increased, and therefore, the first medium in the heat exchange tube 2 and the second medium in the heat exchange cavity 11 can perform sufficient heat exchange. Furthermore, an isolation lining cylinder 7 is further arranged in the heat exchange cavity 11, the heat exchange cylinder is sleeved outside the isolation lining cylinder 7, and the isolation lining cylinder and the shell 1 are fixed in a sealing mode. Because the bending radian of the heat exchange tube 2 is limited, the interior of the heat exchange tube formed by coiling, namely the axle center, is usually hollow; the arranged isolation bushing 7 can fill or isolate the hollow area of the heat exchange cylinder, so that the second medium cannot enter the area of the heat exchange cylinder, and the problem that the second medium entering the area cannot be subjected to sufficient heat exchange because the second medium is relatively far away from the heat exchange tube is avoided.

As shown in fig. 1-3, in a preferred embodiment, a second medium inlet connection 5 is connected to the bottom of the housing 1 and a second medium outlet connection 6 is connected to the top of the housing 1; when the unit is stopped, water serving as a second medium can flow back out of the heat exchanger from the second medium inlet joint 5 under the action of gravity, so that the damage to the heat exchanger caused by icing and expansion of the second medium (water) accumulated in the shell 1 after the unit is stopped is avoided. The shell 1 is further provided with a first temperature sensing pipe 12 and a second temperature sensing pipe 13, the first temperature sensing pipe 12 and the second temperature sensing pipe 13 are connected with the shell 1 and extend into the heat exchange cavity 11, the first temperature sensing pipe 12 is close to the second medium inlet joint 5, and the second temperature sensing pipe 13 is close to the second medium outlet joint 6. The temperature of the second medium entering and exiting the housing 1 can be measured through the first temperature sensing pipe 12 and the second temperature sensing pipe 13, so that the unit can perform real-time control according to the temperature of the second medium flowing in and out. For example, when the temperature difference between the inflow and outflow second media is small, the following two states of the heat exchanger can be known, one is that the heat exchanger has heated the water temperature to the designed temperature, such as 55 degrees, 65 degrees and 75 degrees, and at this time, the operation speed of the unit can be stopped or reduced; the second is that the refrigerant end (first medium) is in low-speed circulation or standby state, at this time, the circulation speed of refrigerant cold can be increased, so that the first medium can fully flow and exchange heat with the second medium.

The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A heat-resistant corrosion-resistant heat exchanger is characterized in that: including casing, heat exchange tube, first medium access connection, first medium outlet connection, second medium access connection and second medium outlet connection, be equipped with the heat transfer chamber in the casing, the heat exchange tube is located the heat transfer intracavity, just the heat exchange tube is the heliciform and coils and form a heat transfer section of thick bamboo, and first medium access connection and first medium outlet connection run through the lateral wall of casing and respectively with the both ends of heat exchange tube are connected, second medium access connection and second medium outlet connection respectively with the casing is connected and with the heat transfer chamber is linked together, the casing is the PPR casing, the heat exchange tube is the titanium pipe.

2. The heat and corrosion resistant heat exchanger of claim 1, wherein: the heat exchange tube is wound with a plurality of layers relative to the radial direction of the heat exchange tube, and one end of the heat exchange tube in the axial direction relative to the shell extends to the other end.

3. The heat and corrosion resistant heat exchanger according to claim 2, wherein: an isolation lining cylinder is further arranged in the heat exchange cavity, the heat exchange cylinder is sleeved outside the isolation lining cylinder, and the isolation lining cylinder and the shell are fixed in a sealing mode.

4. The heat and corrosion resistant heat exchanger of claim 1, wherein: the second medium inlet joint is connected to the bottom of the shell, and the second medium outlet joint is connected to the top of the shell.

5. The heat-resistant corrosion-resistant type heat exchanger according to any one of claims 1 to 4, wherein: the shell is further provided with a first temperature sensing pipe and a second temperature sensing pipe respectively, the first temperature sensing pipe and the second temperature sensing pipe are connected with the shell and extend into the heat exchange cavity, the first temperature sensing pipe is close to the second medium inlet connector, and the second temperature sensing pipe is close to the second medium outlet connector.

6. The heat and corrosion resistant heat exchanger according to claim 5, wherein: the heat exchange tube is characterized in that grooves are further formed in the outer wall or the inner wall of the heat exchange tube and are arranged in the length direction of the heat exchange tube.

7. The heat and corrosion resistant heat exchanger of claim 1, wherein: the shell is further provided with a base, and the base is fixed to the bottom of the shell.