Double-layer parallel pipeline heating device

Abstract

The utility model discloses a double-layer parallel type pipeline heating device which comprises a liquid inlet main path, a plurality of branch paths and a liquid outlet main path, each branch path is respectively provided with a group of liquid heaters, and each group of liquid heaters respectively comprises two heaters which are distributed in an upper layer and a lower layer. The liquid heater device which is arranged in a double-layer mode and connected in parallel is compact in structure and small in occupied area, can contain a large number of liquid heaters under the same occupied area, is favorable for being combined into a high-power liquid heater device, and is favorable for being arranged and installed in a narrow space at the same time. And meanwhile, for the same group of liquid heaters, gas in the pipe flows towards the upper layer in a concentrated manner, so that the gas can be discharged uniformly through the liquid outlet pipe, the gas needing to be discharged is reduced, the gas is discharged more smoothly, and the gas jacking phenomenon is avoided.

Description

Technical Field

[0001] This utility model relates to the field of liquid heating equipment, specifically to a double-layer parallel pipeline heating device. Background Technology

[0002] Special liquid electric heating equipment refers to special water heaters that use electricity as an energy source to heat special liquids, such as pure water heaters. Currently, such equipment in China can be divided into heat exchange type and rapid heating type according to the heating method, and into three types according to size: storage type (also known as volumetric or thermal storage type), rapid heating type (also known as semi-storage type), and instant heating type. This type of equipment heats up quickly, has high power, and precise temperature control. The liquid is heated without any other metal ions or conductive ions.

[0003] Special liquid heating equipment is primarily installed on the floor, with the most common method being a single layer of vertically placed heating tubes. When high-power heating is required, a large number of heating tubes are needed, resulting in long heating pipes and a complex structure. During heating, the gas generated accumulates upwards above the pipes. When there are many heating tubes, the accumulated air is discharged through the same exhaust valve, causing poor ventilation and potentially leading to air sloshing, which hinders liquid flow. Furthermore, it requires a large area and is inconvenient to install in confined spaces. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a double-layer parallel pipeline heating device, which can solve the problems of easy air blasting, large footprint, and inconvenient installation of existing special liquid heating equipment.

[0005] This utility model is achieved through the following technical solution:

[0006] A double-layer parallel pipeline heating device includes: a main inlet pipeline, connected simultaneously to at least a first branch and a second branch, the first branch and the second branch being connected in parallel via pipelines; a liquid heater, including: a first lower heater and a first upper heater arranged in two layers on the first branch, and a second lower heater and a second upper heater arranged in two layers on the second branch; the first lower heater and the first upper heater are connected in series; the second lower heater and the second upper heater are connected in series; the first lower heater and the second lower heater are arranged at the same horizontal level, and the first upper heater and the second upper heater are arranged at the same horizontal level; a main outlet pipeline, connected simultaneously to at least the first branch and the second branch, the main outlet pipeline being equipped with an exhaust valve, the height of the exhaust valve being not lower than the height of the upper liquid heater; the main inlet pipeline is located at the inlet front end of the first lower heater and the second lower heater, and the main outlet pipeline is located at the outlet rear end of the first upper heater and the second upper heater.

[0007] Furthermore, the double-layer parallel pipe heating device also includes several series pipes; the liquid outlet of the first lower heater and the liquid inlet of the first upper heater are connected through the series pipes; the liquid outlet of the second lower heater and the liquid inlet of the second upper heater are connected through the series pipes.

[0008] Furthermore, the double-layer parallel pipeline heating device further includes: a third branch and a fourth branch; the main inlet pipeline is connected to both the third branch and the fourth branch, and the third branch and the fourth branch are connected in parallel via pipelines; the liquid heater further includes: a third lower-layer heater and a third upper-layer heater arranged in two layers on the third branch, and a fourth lower-layer heater and a fourth upper-layer heater arranged in two layers on the fourth branch; the third lower-layer heater and the third upper-layer heater are connected in series; the fourth lower-layer heater and the fourth upper-layer heater are connected in series; the third lower-layer heater and the fourth lower-layer heater are arranged at the same horizontal level, and the fourth upper-layer heater is arranged at the same horizontal level; the main outlet pipeline is connected to both the third branch and the fourth branch.

[0009] Furthermore, the first upper heater and the third upper heater are arranged opposite each other, and the second upper heater and the fourth upper heater are arranged opposite each other; the first lower heater and the third lower heater are arranged opposite each other, and the second lower heater and the fourth lower heater are arranged opposite each other.

[0010] Furthermore, the double-layer parallel pipe heating device also includes several series pipes; the liquid outlet of the third lower heater and the liquid inlet of the third upper heater are connected through the series pipes; the liquid outlet of the fourth lower heater and the liquid inlet of the fourth upper heater are connected through the series pipes.

[0011] Furthermore, the double-layer parallel pipeline heating device also includes: a mounting base; all liquid heaters are fixedly mounted on the mounting base; and the bottom of the mounting base is also provided with wheels for movement.

[0012] Furthermore, the double-layer parallel pipeline heating device also includes: a temperature sensing device and an electrical control system; the temperature sensing device is located on the main outlet pipeline to feed back the outlet temperature to the electrical control system, and the electrical control system is used to control the heating power of at least one set of liquid heaters.

[0013] Furthermore, the double-layer parallel pipe heating device also includes: a cabinet and a column; the cabinet includes four side plates fixed to the mounting base and a top plate, the side plates and the top plate together enclosing the liquid heater;

[0014] The two ends of the column are fixed to the top plate and the mounting base, respectively, and the outer side of the column is fixedly connected to the inner side of the side plate.

[0015] Furthermore, the double-layer parallel pipe heating device further includes: an upper reinforcing plate and a lower reinforcing plate; the side of the upper reinforcing plate is simultaneously fixedly connected to the first upper heater, the second upper heater, the third upper heater, and the fourth upper heater; the end of the upper reinforcing plate is fixedly connected to the column; the side of the lower reinforcing plate is simultaneously fixedly connected to the first lower heater, the second lower heater, the third lower heater, and the fourth lower heater; the end of the lower reinforcing plate is fixedly connected to the column.

[0016] Furthermore, the double-layer parallel pipeline heating device further includes: a reinforcing column; the reinforcing column is fixedly connected between the first upper heater and the second upper heater; the reinforcing column is fixedly connected between the first lower heater and the second lower heater; the reinforcing column is fixedly connected between the third upper heater and the fourth upper heater; and the reinforcing column is fixedly connected between the third lower heater and the fourth lower heater.

[0017] Compared with existing technologies, the beneficial effects that this utility model can achieve are as follows:

[0018] In this invention, the main inlet channel is connected to at least two parallel branches. Of course, the number of branches can be set to more, such as four.

[0019] Taking a case with two branches as an example: During operation, the liquid enters from the main inlet and is diverted to the first branch and the second branch respectively; on the first branch, the liquid passes from bottom to top through the first lower heater and the first upper heater arranged in a double layer; on the second branch, the liquid passes from bottom to top through the second lower heater and the second lower heater arranged in a double layer; the heated liquid from the two branches is re-collected on the main outlet and finally output.

[0020] This utility model employs a double-layer, parallel liquid heater device, which has the following advantages:

[0021] (1) The structure is compact and the footprint is small. Under the same footprint, it can accommodate a large number of liquid heaters, which is conducive to combining them into a high-power liquid heater device. It is also conducive to the arrangement and installation in a narrow space. (2) In the same group of liquid heaters (i.e. liquid heaters that are on the upper and lower layers), the gas in the pipe flows to the upper layer, which is conducive to the unified discharge through the liquid outlet pipe. At the same time, the amount of gas to be discharged is reduced, the gas discharge is smoother, and the phenomenon of gas top is avoided. Attached Figure Description

[0022] Figure 1 The diagram shown is a schematic of a double-layer parallel pipe heating device.

[0023] Figure 2 As shown Figure 1 The front view;

[0024] Figure 3 As shown Figure 1 Top view;

[0025] Figure 4 As shown Figure 1 Cross-sectional view;

[0026] Figure 5 The diagram shows the internal structure of a liquid heater.

[0027] Figure 6 The image shown is a schematic diagram of the double-layer parallel pipe heating device installed inside the cabinet.

[0028] Figure 7 The diagram shows the installation of a double-layer parallel pipe heating device inside the cabinet.

[0029] In the diagram: 10. Main inlet pipe; 20. First branch pipe; 30. Second branch pipe; 40. Third branch pipe; 50. Fourth branch pipe; 60. Main outlet pipe; 70. First lower heater; 71. Inlet pipe; 72. Outlet pipe; 73. Quartz glass outer tube; 74. Quartz heating inner tube; 75. Liquid channel; 80. First upper heater; 90. Second lower heater; 100. Second upper heater; 110. Third lower heater; 120. Third upper heater; 130. Fourth lower heater; 140. Fourth upper heater; 150. Series pipe; 160. Exhaust valve; 170. Mounting base; 171. Wheels; 180. Cabinet; 190. Column; 200. Upper reinforcing plate; 210. Lower reinforcing plate; 220. Reinforcing column. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] In the description of this utility model, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] This utility model discloses a double-layer parallel pipe heating device for heating liquids.

[0035] See Figures 1-4 This double-layer parallel pipeline heating device includes: a main inlet pipeline 10, a liquid heater, and a main outlet pipeline 60. The main inlet pipeline 10 is simultaneously connected to at least two branch pipelines, with the first branch pipeline 20 and the second branch pipeline 30 connected in parallel. The first branch pipeline 20 and the second branch pipeline 30 are also simultaneously connected to the main outlet pipeline 60. Specifically, the main pipelines and branch pipelines are extended and connected via pipes. Of course, the specific number of branch pipelines can be set to more depending on the actual situation, for example, in... Figure 4 In one embodiment shown, there are four branches, namely the first branch 20, the second branch 30, the third branch 40 and the fourth branch 50, which are connected in parallel.

[0036] On each branch line, a set of liquid heaters is arranged, each set consisting of an upper heater and a lower heater arranged in two layers. An exhaust valve 160 is installed on the main outlet line 60, and the height of the exhaust valve 160 is not lower than the height of the upper liquid heater.

[0037] Specifically, the first branch 20 is provided with a first lower layer heater 70 and a first upper layer heater 80 arranged in a double layer, the second branch 30 is provided with a second lower layer heater 90 and a second upper layer heater 100, the third branch 40 is provided with a third lower layer heater 110 and a third upper layer heater 120, and the fourth branch 50 is provided with a fourth lower layer heater 130 and a fourth upper layer heater 140.

[0038] The first lower heater 70 and the first upper heater 80 are connected in series via a series pipe 150. The second lower heater 90 and the second upper heater 100 are connected in series via a series pipe 150. The third lower heater 110 and the fourth upper heater 140 are connected in series via a series pipe 150. The fourth upper heater 140 and the fourth upper heater 140 are connected in series via a series pipe 150.

[0039] To facilitate understanding, the internal structure of the liquid heater is briefly described below. (See also...) Figure 5The liquid heater has an inlet pipe 71 and an outlet pipe 72. Inside the heater, there is a quartz glass outer tube 73 and a quartz heating inner tube 74. The two tubes are arranged coaxially, and the gap formed between the outer and inner tubes is a liquid channel 75 for liquid flow. When the quartz heating inner tube 74 is energized, it conducts heat to the liquid in the liquid channel 75 through the heating film on its outer wall, thereby heating the liquid. The heated liquid is output from the outlet pipe 72 to the next liquid heater or the main outlet channel 60.

[0040] During operation, liquid enters from the main inlet 10, and is then distributed to four branches: 20, 30, 40, and 50. In the first branch 20, the liquid flows upwards through a double-layered lower heater 70 and an upper heater 80. In the second branch 30, the liquid flows upwards through a double-layered lower heater 90 and an upper heater 100. In the third branch 40, the liquid flows upwards through a double-layered lower heater 110 and an upper heater 120. In the fourth branch 50, the liquid flows upwards through a double-layered lower heater 130 and an upper heater 140. The heated liquid from these four branches is then re-collected in the main outlet 60 and finally output.

[0041] This utility model employs a double-layer, parallel liquid heater device, which has the following advantages:

[0042] (1) The structure is compact and the footprint is small. Under the same footprint, it can accommodate a large number of liquid heaters, which is conducive to combining them into a high-power liquid heater device. It is also conducive to the arrangement and installation in a narrow space. (2) In the same group of liquid heaters (i.e. liquid heaters that are on the upper and lower layers), the gas in the pipe flows to the upper layer, which is conducive to the unified discharge through the liquid outlet pipe 72. At the same time, the amount of gas to be discharged is reduced, the gas discharge is smoother, and the phenomenon of gas top is avoided.

[0043] Regarding the structural form, see [reference] Figure 1This embodiment employs four sets of liquid heaters arranged on two opposing sides, with two sets on one side facing each other, forming a matrix-like arrangement in the plane. Specifically, the first upper heater 80 and the third upper heater 120 are arranged opposite each other, as are the second upper heater 100 and the fourth upper heater 140; the first lower heater 70 and the third lower heater 110 are arranged opposite each other, as are the second lower heater 90 and the fourth lower heater 130. This structural form achieves a more compact heating device overall, making efficient use of vertical space through double-layer stacking and achieving a compact arrangement in the planar direction. When a large number of liquid heating tubes are needed to achieve a high heating power, this embodiment offers higher space utilization, is easy to install and deploy on the production site, and has strong practical applicability.

[0044] Previously, liquid heaters were often installed on the floor. When the installation space on the production site was narrow or the layout of the production site needed to be temporarily adjusted, it would affect the original installation position of the liquid heaters. The disassembly and reconnection of the liquid heaters would consume a lot of manpower. In addition, when the installation space on the production site was limited, the operation of the personnel during floor installation would be greatly restricted. Therefore, preferably, this utility model also includes a mounting base 170, on which all liquid heaters are fixedly mounted. The bottom of the mounting base 170 is equipped with casters 171 for movement. By pre-installing and connecting the liquid heaters and various liquid pipes on the mounting base 170, the heating device can be moved to any location on the production site by means of the casters 171 at the bottom of the mounting base 170, which is convenient to use and saves a lot of manpower.

[0045] Furthermore, this utility model also includes a temperature sensing device and an electrical control system. The temperature sensing device is installed on the main liquid outlet channel 60 to detect the liquid outlet temperature and feed it back to the electrical control system. The electrical control system controls the heating power of at least one set of liquid heaters, with at least one set of liquid heaters reserved for power compensation. When the liquid outlet temperature is lower than a preset threshold, the electrical control system controls the reserved liquid heaters to increase their heating power, raising the liquid outlet temperature to the threshold, thus achieving temperature compensation.

[0046] Preferably, to enhance the protective function of the heating device, this utility model also includes a cabinet 180 and a column 190. (See reference...) Figures 6-7 The cabinet 180 includes four side panels fixed to the mounting base 170 and a top panel, which together enclose the liquid heater. The uprights 190 are fixed at both ends to the top panel and the mounting base 170, respectively, and the outer side of the uprights 190 is fixedly connected to the inner side of the side panels, thereby reinforcing the cabinet 180.

[0047] To enhance the connection stability between the liquid heater and the cabinet 180, preferably, this utility model also includes an upper reinforcing plate 200 and a lower reinforcing plate 210. The sides of the upper reinforcing plate 200 are simultaneously fixedly connected to the first upper heater 80, the second upper heater 100, the third upper heater 120, and the fourth upper heater 140; both ends of the upper reinforcing plate 200 are fixedly connected to the two side columns 190. The sides of the lower reinforcing plate 210 are simultaneously fixedly connected to the first lower heater 70, the second lower heater 90, the third lower heater 110, and the fourth lower heater 130; both ends of the lower reinforcing plate 210 are respectively fixedly connected to the two side columns 190.

[0048] To enhance the connection stability between adjacent liquid heaters on the same side, this invention also includes a reinforcing column 220. A reinforcing column 220 is fixedly connected between the first upper heater 80 and the second upper heater 100; a reinforcing column 220 is fixedly connected between the first lower heater 70 and the second lower heater 90; a reinforcing column 220 is fixedly connected between the third upper heater 120 and the fourth upper heater 140; and a reinforcing column 220 is fixedly connected between the third lower heater 110 and the fourth lower heater 130.

[0049] The above-mentioned multiple reinforcement structures enhance the structural integrity and connection stability of the heating device, making it easier to move or install as a whole.

[0050] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A double-layer parallel pipe heating device, characterized in that, include: The main inlet line is connected to at least the first branch and the second branch simultaneously, and the first branch and the second branch are connected in parallel by a pipeline; The liquid heater includes: a first lower heater and a first upper heater arranged in two layers on the first branch, and a second lower heater and a second upper heater arranged in two layers on the second branch. The first lower heater and the first upper heater are connected in series; the second lower heater and the second upper heater are connected in series. The first lower heater and the second lower heater are arranged at the same horizontal level, and the first upper heater and the second upper heater are arranged at the same horizontal level. The main outlet is connected to at least the first branch and the second branch simultaneously. An exhaust valve is installed on the main outlet, and the height of the exhaust valve is not lower than the height of the upper liquid heater. The main inlet path is located at the inlet front end of the first lower heater and the second lower heater, and the main outlet path is located at the outlet rear end of the first upper heater and the second upper heater.

2. The double-layer parallel pipe heating device as described in claim 1, characterized in that, The double-layer parallel pipe heating device also includes several series pipes; The liquid outlet of the first lower heater is connected to the liquid inlet of the first upper heater through the series pipe; the liquid outlet of the second lower heater is connected to the liquid inlet of the second upper heater through the series pipe.

3. The double-layer parallel pipe heating device as described in claim 1, characterized in that, The double-layer parallel pipeline heating device also includes: a third branch and a fourth branch; The main inlet line is connected to both the third branch line and the fourth branch line, and the third branch line and the fourth branch line are connected in parallel via pipelines. The liquid heater further includes: a third lower heater and a third upper heater arranged in two layers on the third branch, and a fourth lower heater and a fourth upper heater arranged in two layers on the fourth branch. The third lower heater and the third upper heater are connected in series; the fourth lower heater and the fourth upper heater are connected in series. The third lower heater and the fourth lower heater are arranged at the same horizontal level, and the fourth upper heater and the fourth upper heater are arranged at the same horizontal level. The main outlet is connected to both the third branch and the fourth branch.

4. The double-layer parallel pipe heating device as described in claim 3, characterized in that, The first upper heater and the third upper heater are arranged opposite each other, and the second upper heater and the fourth upper heater are arranged opposite each other; the first lower heater and the third lower heater are arranged opposite each other, and the second lower heater and the fourth lower heater are arranged opposite each other.

5. The double-layer parallel pipe heating device as described in claim 3, characterized in that, The double-layer parallel pipe heating device also includes several series pipes; The liquid outlet of the third lower heater is connected to the liquid inlet of the third upper heater through the series pipe; the liquid outlet of the fourth lower heater is connected to the liquid inlet of the fourth upper heater through the series pipe.

6. The double-layer parallel pipe heating device as described in claim 3, characterized in that, The double-layer parallel pipeline heating device further includes: a mounting base; all liquid heaters are fixedly mounted on the mounting base; The bottom of the mounting base is also equipped with wheels for movement.

7. The double-layer parallel pipe heating device as described in claim 3, characterized in that, The double-layer parallel pipeline heating device further includes: a temperature sensing device and an electrical control system; the temperature sensing device is located on the main outlet pipeline to feed back the outlet temperature to the electrical control system, and the electrical control system is used to control the heating power of at least one set of liquid heaters.

8. The double-layer parallel pipe heating device as described in claim 6, characterized in that, The double-layer parallel pipeline heating device further includes: a cabinet and a column; the cabinet includes four side plates fixed to the mounting base and a top plate, the side plates and the top plate together enclosing the liquid heater; The two ends of the column are fixed to the top plate and the mounting base, respectively, and the outer side of the column is fixedly connected to the inner side of the side plate.

9. The double-layer parallel pipe heating device as described in claim 8, characterized in that, The double-layer parallel pipe heating device also includes: an upper reinforcing plate and a lower reinforcing plate; The side of the upper reinforcing plate is fixedly connected to the first upper heater, the second upper heater, the third upper heater, and the fourth upper heater; the end of the upper reinforcing plate is fixedly connected to the column. The side of the lower reinforcing plate is fixedly connected to the first lower heater, the second lower heater, the third lower heater, and the fourth lower heater; the end of the lower reinforcing plate is fixedly connected to the column.

10. The double-layer parallel pipe heating device as described in claim 3, characterized in that, The double-layer parallel pipeline heating device also includes: a reinforcing column; The reinforcing column is fixedly connected between the first upper heater and the second upper heater; the reinforcing column is fixedly connected between the first lower heater and the second lower heater; the reinforcing column is fixedly connected between the third upper heater and the fourth upper heater; and the reinforcing column is fixedly connected between the third lower heater and the fourth lower heater.

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