Heat supply device suitable for large-temperature-difference environment

Abstract

The utility model provides a heat supply device suitable for a large temperature difference environment, which relates to the technical field of heat supply equipment and comprises a heat exchange tube, two symmetrically distributed heat conducting plates are mounted on the outer side of the heat exchange tube through bolts, a protective cover is mounted on the outer side of each heat conducting plate, and a positioning sleeve is mounted above the protective cover through bolts. And a group of filtering structures are mounted in the positioning sleeve. The spiral piece is innovatively arranged in the heat exchange pipe, the heat exchange area is greatly expanded and is increased by more than 30% compared with a traditional straight pipe structure, hot water can conduct more sufficient heat exchange with an external cold source when flowing in the pipe, the heat conduction plate is tightly attached to the heat exchange pipe, and the heat exchange effect is improved by means of the good heat conduction performance of the heat conduction plate. And heat in the heat exchange tube is quickly diffused to a larger range, so that the heat transfer process is further accelerated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heat supply equipment, especially to the heat supply device suitable for large temperature difference environment. BACKGROUND

[0002] In many extreme, special geographical regions, such as polar periphery, high mountain plateau zone and northern region, the temperature change range is extremely amazing when day and night or season alternation, forms the large temperature difference environment, and the traditional heat supply device exposes many serious problems when facing such conditions as follows:

[0003] Firstly, the traditional heat exchange pipe adopts the straight pipe structure, and the heat exchange area is limited, and the heat exchange efficiency is low, and it is difficult to quickly take enough heat from the heat source in the low temperature environment, resulting in insufficient heat supply;

[0004] Secondly, when the ordinary heat exchange device faces the thermal expansion and cold contraction phenomenon caused by large temperature difference, the pipeline of the heat exchange device is prone to stretching deformation, joint loosening and even rupture and leakage, which increases the frequency and labor of heat supply device maintenance;

[0005] In addition, the impurities in the heat supply system have always been a problem that has plagued the long-term stable operation of the equipment, and the water usually contains iron filings, sand and other impurities, which are easy to adhere to the pipe wall after entering the heat exchange pipe, and form a dirt layer after years of accumulation, which greatly reduces the heat exchange efficiency. INVENTION CONTENTS

[0006] The utility model discloses a heat supply device suitable for large temperature difference environment, when heat supply system starts, heat pump pumps hot water into inlet pipe with set pressure and flow, hot water enters heat exchange pipe through ball valve adjustment, in heat exchange pipe, hot water and external cold source exchange heat through heat conduction plate, because of the existence of helical fin in heat exchange pipe, increase heat exchange area, improve heat exchange efficiency, heat is quickly transferred, make heat supply temperature rapidly rise;

[0007] The hot water after heat exchange carries a small amount of iron filings and impurities that may be mixed and flows into the outlet elbow neck, then enters the positioning sleeve through the drainage pipe, and finally flows into the filtering structure, the filtering structure retains the impurities, and the purified hot water returns to the heat pump or enters the subsequent heat supply pipe network, ensuring the cleanliness of the circulating water of the heat supply system, prolonging the service life of the heat pump and ensuring stable heat supply.

[0008] The first aspect of the present disclosure provides a heating device suitable for large temperature difference environment, comprising: a heat exchange pipe, two symmetrical heat conduction plates are installed on the outer side of the heat exchange pipe through bolts, a protective cover is installed on the outer side of the heat conduction plate, a positioning sleeve is installed on the upper side of the protective cover through bolts, a group of filtering structures are installed in the positioning sleeve, a group of connecting flanges are arranged at the two sides of the heat exchange pipe, a threaded pipe is installed on the outer side of each connecting flange, a water inlet pipe and a water outlet elbow are installed on the outer side of the threaded pipe, a valve is installed in the middle of the water inlet pipe, a group of positioning rods are installed between the threaded pipe and the water inlet pipe, a group of positioning rods are installed between the threaded pipe and the water outlet elbow, and a drainage pipe is installed between the positioning sleeve and the water outlet elbow.

[0009] Further, a group of sliding holes are formed at the edge positions of the threaded pipe, the water inlet pipe and the water outlet elbow, and a group of threaded holes are formed at the edge positions of the connecting flanges at the end of the heat exchange pipe, the positioning rods are screwed through the inside of the sliding holes and the threaded holes.

[0010] Further, a group of positioning grooves corresponding to the heat exchange pipe are formed at the inner side positions of the heat conduction plates, the positioning grooves are in arc structure, and the heat exchange pipe extends to the inside of the positioning grooves.

[0011] Further, two threaded connecting blocks are arranged at the outer side positions of the protective cover, two symmetrical positioning bolts are arranged at the positions of the threaded connecting blocks, the positioning bolts are in contact with the bottom of the heat exchange pipe, two positioning grooves are formed at one side of the protective cover, and the end of the heat exchange pipe passes through the inside of the positioning grooves.

[0012] Further, a group of spiral fins are arranged at the inner side positions of the heat exchange pipe.

[0013] Further, an internal thread is formed at the inner side positions of the positioning sleeve, an external thread is arranged at one side of the filtering structure, and the internal thread and the external thread are screwed.

[0014] Further, one connecting flange is arranged at one side of the filtering structure, one connecting flange is arranged at the upper and lower positions of the water outlet elbow, and a group of bolt mounting holes are formed in the connecting flanges of the heat exchange pipe, the filtering structure and the water outlet elbow.

[0015] Further, a connecting pipe is arranged at the upper position of one side of the positioning sleeve, and the bottom of the drainage pipe is stably connected with the connecting pipe through bolts.

[0016] The present application provides a heating device suitable for large temperature difference environment, which has the following advantages:

[0017] The helical fin is innovatively arranged inside the heat exchange pipe, greatly expands the heat exchange area, and increases by more than 30% compared with the traditional straight pipe structure, so that the hot water in the pipe can exchange heat with the external cold source more fully when flowing, the heat conduction plate closely adheres to the heat exchange pipe, and the heat in the heat exchange pipe is rapidly spread to a larger range by the good heat conduction performance, further accelerating the heat transfer process, and in a large temperature difference environment, the synergistic effect is particularly prominent, can quickly balance the temperature difference, ensure stable heating or refrigeration effect, and meet the application scene with high temperature requirements.

[0018] The threaded pipe is made of a rubber alloy material with excellent high-temperature resistance, low-temperature resistance and fatigue resistance, and can freely stretch within a large-span temperature range of-50 DEG C to 100 DEG C, effectively compensating for the displacement of the pipeline due to thermal expansion and contraction.

[0019] The filter structure is ingeniously integrated in the heat exchange device between the water outlet elbow and the heat pump, and can timely capture the iron filings and impurities carried by the flowing hot water in the heat exchange pipe and pipeline, which not only prevents the deposition of impurities in the heat exchange pipe and reduces the heat exchange efficiency, but also avoids the impurities entering the heat pump, protects the internal precision components of the pump body from wear and tear, prolongs the service life of the heat pump, reduces the equipment maintenance frequency and cost.

[0020] The entire heat exchange device follows the modular design concept, and the heat exchange pipe, heat conduction plate, protective cover and threaded pipe are combined through simple connecting parts such as bolts and positioning rods, and the connection mode between the positioning sleeve and the filter structure and the drain pipe is also clear and obvious. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.

[0022] The drawings described below only relate to some embodiments of the present application, and are not a limitation of the present application.

[0023] In the drawings:

[0024] Figure 1 The axial side structure schematic diagram of the heat supply device of the present application after assembly is shown;

[0025] Figure 2 The axial side structure schematic diagram of the heat supply device of the present application after assembly is shown; Figure 1

[0026] Figure 3 The axial side structure schematic diagram of the heat supply device of the present application after assembly is shown;

[0027] Figure 4 The axial side structure schematic diagram of the heat supply device of the present application after assembly is shown;

[0028] ​Figure 5 A schematic diagram of the heat exchanger tube cross-section of this application is shown;

[0029] Figure 6 This paper shows an isometric view of the disassembled structure of the positioning rod, inlet pipe, and outlet elbow of this application.

[0030] Figure 7 This application shows Figure 1 A magnified structural diagram at point A.

[0031] List of reference numerals

[0032] 1. Heat exchanger tubes;

[0033] 2. Heat-conducting plate;

[0034] 3. Protective cover; 301 positioning bolts;

[0035] 4. Positioning sleeve;

[0036] 5. Filter structure;

[0037] 6. Drainage tube;

[0038] 8. Threaded pipe;

[0039] 9. Positioning rod;

[0040] 10. Water inlet pipe;

[0041] 11. Water outlet bend. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0043] Example 1: Please refer to Figures 1 to 7 :

[0044] The utility model provides a heat supply device suitable for big temperature difference environment, include: heat exchange pipe 1, the inside position of heat exchange pipe 1 is equipped with a group of spiral sheet, the setting of spiral sheet expands the heat exchange area of heat exchange pipe 1, and the heat exchange area is compared with traditional straight pipe structure to increase by more than thirty percent, greatly improve the heat exchange efficiency, the shell of heat exchanger adopts the high performance heat preservation material of prior art, and the heat preservation material can effectively reduce the heat loss to the external environment, the outside of heat exchange pipe 1 is equipped with two symmetrical distribution's heat conduction plate 2 through bolt installation, the inside position of heat conduction plate 2 is equipped with a group of and heat exchange pipe 1 corresponding positioning slot, and the positioning slot is circular arc structure, and heat exchange pipe 1 extends to the inside of positioning slot, and two heat conduction plates 2 can be effectively contacted with heat exchange pipe 1 after installation cooperation bolt and positioning slot, and heat conduction plate 2 can further spread the heat of heat exchange pipe 1, and heat exchange pipe 1, heat conduction plate 2 greatly improve the heat exchange efficiency under the cooperation of big temperature difference environment, and the outside of heat conduction plate 2 is installed with a protective cover 3, and the outside position of protective cover 3 is equipped with two threaded connecting blocks, and the position of threaded connecting block is installed two symmetrical distribution's positioning bolt 301, and threaded connecting block realizes the effect of the threaded positioning of positioning bolt 301, and positioning bolt 301 is contacted with the bottom of heat exchange pipe 1, and one side of protective cover 3 is equipped with two positioning slots, and the end of heat exchange pipe 1 passes through the inside of positioning slot, so when protective cover 3 installs the effect of installation position positioning is realized after cooperation positioning bolt 301;

[0045] In the embodiment of the present disclosure, as shown in the figure, Figures 1 to 7 The upper side of the protective cover 3 is provided with a positioning sleeve 4 through a bolt, an internal thread is formed in the inside position of the positioning sleeve 4, an external thread is formed on one side of the filter structure 5, and the internal thread and the external thread are threadedly connected when the filter structure 5 is installed in the inside of the positioning sleeve 4. At this time, the installation position of the filter structure 5 is stable under the cooperation of the threads. The filter material in the inside of the filter structure 5 is selected according to the prior art, a group of filter structures 5 are installed in the inside of the positioning sleeve 4, a group of connecting flanges are respectively arranged at the two sides of the heat exchange pipe 1, a threaded pipe 8 is respectively installed at the outside position of each connecting flange, the threaded pipe 8 is made of a rubber alloy material with excellent high-temperature resistance, low-temperature resistance and fatigue resistance, can freely stretch and shrink in a large temperature range of-50 DEG C to 150 DEG C, effectively compensates the displacement of the pipeline due to thermal expansion and cold shrinkage, prevents the pipeline connection from being broken and leaking, a water inlet pipe 10 and a water outlet elbow 11 are installed at the outside position of the threaded pipe 8, a valve is installed at the middle position of the water inlet pipe 10, and the valve is selected as a ball valve structure of the prior art.

[0046] In the embodiment of the present disclosure, as shown in the figure, Figures 1 to 7As shown, a set of positioning rods 9 are installed between the threaded pipe 8 and the water inlet pipe 10, and a set of positioning rods 9 are installed between the threaded pipe 8 and the water outlet elbow 11. A set of sliding holes are formed at the edge positions of the threaded pipe 8, the water inlet pipe 10 and the water outlet elbow 11, respectively. A set of threaded holes are formed at the edge positions of the connecting flanges at the end of the heat exchange pipe 1. The positioning rods 9 are threadedly connected through the inside of the sliding holes and the threaded holes. The positioning rods 9 are positioned and reinforced after installation to avoid bending of the threaded pipe 8, so that the threaded pipe 8 can stably expand and contract laterally. One connecting flange is arranged on one side of the filtering structure 5. One connecting flange is arranged at the upper and lower positions of the water outlet elbow 11. A set of bolt mounting holes are formed in the connecting flanges of the heat exchange pipe 1, the filtering structure 5 and the water outlet elbow 11, respectively. The staff needs to install locking bolts at the positions of the bolt mounting holes, so that the connecting flanges can be stably docked.

[0047] In the embodiments of the present disclosure, reference is made to Figures 1 to 7 As shown, a drainage pipe 6 is installed between the positioning sleeve 4 and the water outlet elbow 11. The material of the drainage pipe 6 is selected from a rubber alloy material with excellent high-temperature resistance, low-temperature resistance and fatigue resistance in the prior art. One connecting pipe is arranged at the upper position on one side of the positioning sleeve 4. The bottom of the drainage pipe 6 is stably connected with the connecting pipe through bolts. The heated water enters the inside of the water inlet pipe 10 and the heat exchange pipe 1, and then enters the inside of the water outlet elbow 11, the drainage pipe 6 and the positioning sleeve 4. Then the water containing impurities enters the inside of the filtering structure 5 for filtering, and then enters the heat pump again. The filtering structure 5 can filter the iron filings and impurities in the heat exchange pipe 1 and the pipeline, so that the heat pump can better provide pressure for hot water.

[0048] In the embodiments of the present disclosure, reference is made to Figures 1 to 7 As shown, the water inlet pipe 10 is connected with the heat pump in the prior art.

[0049] The working principle of the present embodiment is as follows:

[0050] The assembly steps of the heat supply device are as follows: the staff places the heat exchange pipe 1 horizontally on a clean and flat assembly table, takes two heat-conducting plates 2, aligns the end of the heat exchange pipe 1 with the positioning groove on the inside of the heat-conducting plate 2, slowly embeds the heat exchange pipe 1 into the positioning groove, ensures tight fit without gap, then uses bolts to pass through the connecting part of the heat-conducting plate 2 and the heat exchange pipe 1, and tightens according to the specified torque, so that the heat-conducting plate 2 is firmly fixed on the outside of the heat exchange pipe 1, realizing efficient heat conduction.

[0051] The staff picks up the protective cover 3, passes the end of the heat exchange pipe 1 through the positioning groove on one side of the protective cover 3, so that the protective cover 3 is located on the outside of the heat-conducting plate 2. The staff turns the positioning bolt 301 with a wrench, so that the bottom of the positioning bolt 301 lightly contacts the bottom of the heat exchange pipe 1, playing a supporting and positioning role. The protective cover 3 is fixedly connected with the heat-conducting plate 2.

[0052] The worker installs threaded pipes 8 on the flanges at both ends of the heat exchange pipe 1, one end of the threaded pipe 8 is sleeved on the connecting flange, the threaded hole at the edge of the flange is aligned, the positioning rod 9 is inserted, the positioning rod 9 passes through the sliding hole of the threaded pipe 8, the water inlet pipe 10 or the water outlet elbow 11, and is screwed with the threaded hole of the connecting flange, the positioning rod 9 is tightened to ensure that the threaded pipe 8 is firmly installed and can stably stretch laterally, and the installation of the other end is repeated;

[0053] One end of the water inlet pipe 10 is connected with one of the threaded pipes 8, the connection is ensured to be sealed, the valve operation is flexible, and the closing is tight; the water outlet elbow 11 is connected with the other threaded pipe 8, and the sealing is also ensured to be good, and the connection is stable at the connection part of the water inlet pipe 10 and the heat pump;

[0054] The filter structure 5 is screwed into the inside of the positioning sleeve 4, and the filter structure 5 is fixed in the positioning sleeve 4 through the close cooperation of the internal thread and the external thread, so as to ensure that it is stable and does not loosen. The positioning sleeve 4 is connected with the drainage pipe 6 at the bottom through the connecting pipe by means of bolts, so as to ensure that the connection is tight and there is no leakage. Then, the connecting flanges of the heat exchange pipe 1, the filter structure 5 and the water outlet elbow 11 are aligned, the locking bolts are inserted, and the bolts are tightened according to the specified torque, so that the three are tightly connected to form a complete water flow channel.

[0055] The debugging steps of the heat supply device are as follows: the existing heat pump is started, the ball valve on the water inlet pipe 10 is slowly opened, water flows into the heat exchange pipe 1 at a low flow rate, and the whole device is observed for leakage. The connection parts of the threaded pipes 8 and other components, the connecting flange parts, the connecting parts of the drainage pipe 6 and the positioning sleeve 4 and the water outlet elbow 11 are checked, and if there is leakage, the ball valve is immediately closed, the leakage point is checked, and the connecting parts are resealed or tightened.

[0056] The thermal expansion and contraction performance of the threaded pipe 8 is tested, a large temperature difference environment change is simulated (which can be realized by heating or cooling the air around the device, etc.), whether the threaded pipe 8 can freely stretch and contract under temperature change is observed, whether the positioning rod 9 effectively limits its bending is observed, and it is ensured that the device operates stably in the range of-50℃ to 150℃ without the risk of pipe rupture.

[0057] The heat supply operation steps are as follows: when the heat supply system starts, the heat pump pumps hot water into the water inlet pipe 10 at a set pressure and flow rate, the hot water enters the heat exchange pipe 1 after being adjusted by the ball valve, and in the heat exchange pipe 1, the hot water exchanges heat with the external cold source (such as cold air, cold water, etc., depending on the specific heat supply scene) through the heat conducting plate 2. Due to the presence of the spiral fins in the heat exchange pipe 1, the heat exchange area is increased and the heat exchange efficiency is improved, heat is quickly transferred, and the heat supply temperature is quickly raised.

[0058] The heat-exchanged hot water carrying a small amount of iron filings and impurities mixed therein flows into the water outlet elbow 11, then enters the positioning sleeve 4 through the drainage pipe 6, and finally flows into the filtering structure 5. The filtering structure 5 retains the impurities, and the purified hot water returns to the heat pump or enters the subsequent heat supply pipe network, thereby ensuring the cleanliness of the circulating water of the heat supply system, prolonging the service life of the heat pump, and ensuring stable heat supply.

[0059] In this document, the following points need to be noted:

[0060] 1. The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0061] 2. In the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0062] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A heating device suitable for use in a large temperature difference environment, comprising: Heat exchange pipe (1), heat conduction plate (2) and threaded pipe (8), characterized in that the outer side of the heat exchange pipe (1) is provided with two symmetrically distributed heat conduction plates (2) through bolt installation, the outer side of the heat conduction plate (2) is provided with a protective cover (3), the upper side of the protective cover (3) is provided with a positioning sleeve (4) through bolt installation, the inside of the positioning sleeve (4) is provided with a set of filter structure (5), the two sides of the heat exchange pipe (1) are respectively provided with a set of connecting flanges, the outer side of the connecting flange is respectively provided with a threaded pipe (8), the outer side of the threaded pipe (8) is provided with a water inlet pipe (10) and a water outlet elbow (11), the middle of the water inlet pipe (10) is provided with a valve, a set of positioning rods (9) are installed between the threaded pipe (8) and the water inlet pipe (10), a set of positioning rods (9) are installed between the threaded pipe (8) and the water outlet elbow (11), a drainage pipe (6) is installed between the positioning sleeve (4) and the water outlet elbow (11).

2. The heating device suitable for large temperature difference environment according to claim 1, characterized in that, a set of sliding holes are formed in the edge positions of the threaded pipe (8), the water inlet pipe (10) and the water outlet elbow (11), a set of threaded holes are formed in the edge positions of the connecting flanges at the end of the heat exchange pipe (1), and the positioning rods (9) are threadedly connected through the inside of the sliding holes and the threaded holes.

3. The heating device suitable for large temperature difference environment according to claim 1, characterized in that, a set of positioning grooves corresponding to the heat exchange pipe (1) are formed in the inner side positions of the heat conduction plate (2), the positioning grooves are circular arc structures, and the heat exchange pipe (1) extends to the inside of the positioning grooves.

4. The heating device suitable for large temperature difference environment according to claim 1, characterized in that, two threaded connection blocks are provided in the outer side positions of the protective cover (3), two symmetrically distributed positioning bolts (301) are installed in the positions of the threaded connection blocks, the positioning bolts (301) contact the bottom of the heat exchange pipe (1), two positioning grooves are formed in one side of the protective cover (3), and the end of the heat exchange pipe (1) passes through the inside of the positioning grooves.

5. The heating device suitable for large temperature difference environment according to claim 1, characterized in that, a set of helical fins are provided in the inner side positions of the heat exchange pipe (1).

6. The heating device suitable for large temperature difference environment according to claim 1, characterized in that, an internal thread is formed in the inner side positions of the positioning sleeve (4), an external thread is provided in one side of the filter structure (5), and the internal thread and the external thread are threadedly connected.

7. The heating device suitable for large temperature difference environment according to claim 1, characterized in that, one connecting flange is provided in one side of the filter structure (5), one connecting flange is provided in the upper and lower positions of the water outlet elbow (11), and a set of bolt installation holes are formed in the connecting flanges of the heat exchange pipe (1), the filter structure (5) and the water outlet elbow (11).

8. The heating device suitable for large temperature difference environment according to claim 1, characterized in that, one connecting pipe is provided in the upper position of one side of the positioning sleeve (4), and the bottom of the drainage pipe (6) is stably connected with the connecting pipe through bolts.

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