Hot water heat tracing structure of heat exchange unit

Abstract

The utility model relates to the field of hot water heat tracing structures, in particular to a hot water heat tracing structure of a heat exchange unit, which comprises a primary water supply pipeline, a primary water return pipeline, a secondary water supply pipeline and a secondary water return pipeline. The heat tracing device further comprises a heat tracing header structure and a heat tracing hose. Heat tracing hoses for heat tracing are arranged on the primary water supply pipeline and the primary water return pipeline respectively, heat tracing header structures for heat tracing and heat tracing hoses for heat tracing are arranged on the secondary water supply pipeline and the secondary water return pipeline respectively, and the heat tracing hoses are wound on the pipeline outer walls of the secondary water supply pipeline and the secondary water return pipeline; according to the hot water heat tracing structure of the heat exchange unit, a heat tracing function can be provided for a pipeline of the heat exchange unit through the heat tracing header structure and the heat tracing hose; when the primary water supply pipeline and the primary water return pipeline do not need heat tracing, the section of hose can be directly connected with the secondary water supply heat tracing header and the upstream secondary water return heat tracing header, and the purpose of only heat tracing of the secondary water supply pipeline and the secondary water return pipeline is achieved.

Description

Technical Field

[0001] The utility model relates to the field of hot water heating structures, in particular to a hot water heating structure of a heat exchange unit. Background Art

[0002] In a heat exchanger, the inlet temperature of the heat medium is usually low, and the internal pipe travel of the unit is short, resulting in small heat dissipation losses. Therefore, most pipes of heat exchangers do not require insulation, let alone heat tracing. However, in some cases, such as when the heat dissipation loss requirements are high or when there is sufficient waste heat and no effective heat recovery, the traditional zero heat tracing structure is not applicable.

[0003] Therefore, studying an effective hot water heating structure for heat exchanger units has become an urgent problem to be solved. Utility Model Content

[0004] The utility model provides a hot water heating structure for a heat exchange unit, aiming to effectively heat a header, a pipeline and the like of the unit, thereby solving the technical problems in the background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a hot water tracing structure of a heat exchange unit, comprising a primary water supply pipeline, a primary water return pipeline, a secondary water supply pipeline and a secondary water return pipeline; and also comprising: a tracing header structure and a tracing hose;

[0006] The primary water supply pipeline, the primary water return pipeline, the secondary water supply pipeline and the secondary water return pipeline are respectively provided with heating hoses for heating;

[0007] The secondary water supply pipeline and the secondary water return pipeline are both provided with a heating header structure for heating;

[0008] The heating header structure comprises a header body, a header sleeve and a sleeve end cover;

[0009] The header body is a hollow structure, and a plurality of pipe joints are arranged on the header body;

[0010] The header sleeve is sleeved on the header body with an interval, and a header interlayer is formed between the two; a hose connector is provided on the header sleeve, and the header sleeve is connected to the heating hose through the hose connector; hot water is injected into the header interlayer through the heating hose;

[0011] There are two sleeve end covers, which are respectively arranged at the two ends of the header sleeve. The sleeve end covers are sealed and connected to the header body and the header sleeve at the same time.

[0012] Furthermore, it also includes an inlet distribution header and an outlet header;

[0013] The water inlet distribution header is connected to a hot water source, and the water inlet distribution header is connected to a heating header structure through a heating hose; the water inlet distribution header receives hot water and distributes the hot water to the header interlayer of the heating header structure through the heating hose;

[0014] The water outlet header is connected to the heating header structure, and the hot water in the header interlayer flows into the water outlet header through the heating hose.

[0015] Furthermore, it also includes an inlet stop valve, a heating branch outlet stop valve, an outlet stop valve and a bypass stop valve;

[0016] The inlet stop valve is arranged upstream of the water inlet distribution manifold and is used to control the hot water to enter the water inlet distribution manifold;

[0017] The outlet stop valve is arranged downstream of the water outlet manifold and is used to control the discharge of hot water from the water outlet manifold;

[0018] The heating branch outlet stop valve is arranged upstream of the water outlet manifold and is used to control the hot water to enter the water outlet manifold.

[0019] Furthermore, the water inlet distribution manifold is connected to a heating branch line 1 inlet valve and a heating branch line 2 inlet valve via a pipe seat;

[0020] A heating hose connected to an inlet valve of the heating branch is wound around the primary water supply pipeline;

[0021] The heating hose connected to the second inlet valve of the heating branch is wound around the primary return water pipeline.

[0022] Furthermore, the heating header structure has three structures, namely, a secondary water supply heating header, an upstream secondary return water heating header, and a downstream secondary return water heating header;

[0023] The secondary water supply heating manifold is arranged on the secondary water supply pipeline;

[0024] The upstream secondary return water heating manifold is arranged at an upstream position on the secondary return water pipeline;

[0025] The downstream secondary water return heating manifold is arranged at a downstream position on the secondary water return pipeline.

[0026] Furthermore, it also includes a secondary supply and return water bypass pipe; the secondary supply and return water bypass pipe is arranged between the secondary supply water heating manifold and the upstream secondary return water heating manifold.

[0027] Furthermore, the water inlet distribution manifold and the water outlet manifold are both provided with a pressure gauge and a temperature gauge.

[0028] Furthermore, a drainage interface is provided at the bottom of the header sleeve for draining water in the header interlayer.

[0029] Beneficial Effects

[0030] The utility model provides a hot water heating structure for a heat exchanger unit, which can provide a heating function for the pipelines of the heat exchanger unit through a heating header structure and a heating hose; when the unit does not need heating, the inlet stop valve and the outlet stop valve can be closed without affecting the normal operation of the unit.

[0031] The number of windings of each section of the heating hose of the utility model can be freely adjusted according to the required heating amount. When the primary water supply pipeline and the primary return water pipeline do not need heating, the section of the hose can be directly connected to the secondary water supply heating manifold and the upstream secondary return water heating manifold to achieve the purpose of heating only the secondary water supply pipeline and the secondary return water pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0033] Figure 1 It is a structural schematic diagram of the hot water heating structure of the heat exchange unit disclosed in the utility model;

[0034] Figure 2 It is a side view of the hot water heating structure of the heat exchange unit disclosed in the utility model;

[0035] Figure 3 It is a top view of the heating header structure of the hot water heating structure of the heat exchange unit disclosed in the utility model;

[0036] Figure 4 It is a cross-sectional view of a heating header structure of a hot water heating structure of a heat exchange unit disclosed in the utility model.

[0037] In the figure:

[0038] 1. Inlet stop valve; 2. Inlet water distribution manifold; 3. Inlet valve of heating branch 1; 4. Inlet valve of heating branch 2; 5. Heating hose; 6. Secondary water supply heating manifold; 7. Upstream secondary return water heating manifold; 8. Downstream secondary return water heating manifold; 9. Heating branch outlet stop valve; 10. Water outlet manifold; 11. Outlet stop valve; 12. Bypass stop valve; 13. Secondary supply and return water bypass pipeline; 14. Primary water supply pipeline; 15. Primary return pipeline; 16. Secondary water supply pipeline; 17. Secondary return pipeline; 18. Pipe joint; 19. Hose joint; 20. Manifold body; 21. Manifold sleeve; 22. Sleeve end cover; 23. Manifold interlayer. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: Figure 1-4 As shown, a hot water tracing structure of a heat exchange unit includes a primary water supply pipeline 14, a primary water return pipeline 15, a secondary water supply pipeline 16 and a secondary water return pipeline 17; and also includes: a tracing header structure and a tracing hose 5;

[0041] The primary water supply pipeline 14, the primary water return pipeline 15, the secondary water supply pipeline 16 and the secondary water return pipeline 17 are respectively provided with heating hoses 5 for heating; the heating hoses 5 are wound around the primary water supply pipeline 14, the primary water return pipeline 15, the secondary water supply pipeline 16 and the secondary water return pipeline 17;

[0042] A heating header structure for heating is provided on the secondary water supply pipeline 16 and the secondary water return pipeline 17;

[0043] The heating header structure includes a header body 20, a header sleeve 21 and a sleeve end cover 22;

[0044] The header body 20 is a hollow structure, and a plurality of pipe joints 18 are provided on the header body 20. The header body 20 is connected to the secondary water supply pipe 16 or the secondary water return pipe 17 or other heating header structures through the pipe joints 18;

[0045] The header sleeve 21 is sleeved on the header body 20 with an interval, and a header interlayer 23 is formed between the two; a hose connector 19 is provided on the header sleeve 21, and the header sleeve 21 is connected to the heating hose 5 through the hose connector 19; hot water is injected into the header interlayer 23 or the hot water in the header interlayer 23 is discharged through the heating hose 5; there can be multiple hose connectors 19 according to actual conditions;

[0046] There are two sleeve end covers 22, which are respectively arranged at both ends of the header sleeve 21. The header sleeve 21 is made of a steel pipe with a larger diameter than the header body 20. The length of the header sleeve 21 is shorter than the length of the header body 20. The sleeve end covers 22 are welded to the header body 20 and the header sleeve 21 at the same time.

[0047] Furthermore, it also includes an inlet distribution header 2 and an outlet header 10;

[0048] The water inlet distribution header 2 is connected to the hot water source, and the water inlet distribution header 2 is connected to the heating header structure through the heating hose 5; the water inlet distribution header 2 receives the hot water and distributes the hot water to the header interlayer 23 of the heating header structure through the heating hose 5;

[0049] The water outlet manifold 10 is connected to the heating manifold structure, and the hot water in the manifold interlayer 23 flows into the water outlet manifold 10 through the heating hose 5 .

[0050] Furthermore, it also includes an inlet stop valve 1, a heating branch outlet stop valve 9, an outlet stop valve 11 and a bypass stop valve 12;

[0051] The inlet stop valve 1 is arranged upstream of the water inlet distribution header 2, and is used to control the hot water to enter the water inlet distribution header 2;

[0052] The outlet stop valve 11 is arranged downstream of the water outlet manifold 10 and is used to control the hot water to be discharged from the water outlet manifold 10;

[0053] The heat tracing branch outlet stop valve 9 is arranged upstream of the water outlet manifold 10 to control the hot water to enter the water outlet manifold 10;

[0054] The inlet stop valve 1 and the outlet stop valve 11 are used to control the hot water flow rate to ensure that appropriate hot water enters and flows out of the system;

[0055] The water inlet distribution manifold 2 and the water outlet manifold 10 are connected by a pipeline, and a bypass stop valve 12 is provided on the pipeline. During normal operation, the bypass stop valve 12 is in a closed state, and the water inlet distribution manifold 2 outputs hot water normally. When it is necessary to reduce the heating, the opening of the bypass stop valve 12 can be adjusted, so that part of the hot water flows from the bypass stop valve 12 into the water outlet manifold 10, short-circuiting part of the hot water, thereby reducing the amount of hot water flowing into the heating structure and reducing the heating.

[0056] Furthermore, the water inlet distribution manifold 2 is connected to the heating branch line 1 inlet valve 3 and the heating branch line 2 inlet valve 4 through the pipe seat;

[0057] The heating hose 5 connected to the heating branch inlet valve 3 is wound around the primary water supply pipeline 14;

[0058] The heating hose 5 connected to the second inlet valve 4 of the heating branch is wound around the primary return water pipeline 15 .

[0059] Furthermore, there are three heating header structures, namely, a secondary water supply heating header 6, an upstream secondary return water heating header 7, and a downstream secondary return water heating header 8;

[0060] The secondary water supply heating manifold 6 is disposed on the secondary water supply pipeline 16; the secondary water supply heating manifold 6 receives hot water conducted from the heating hose 5 and distributes heat to the secondary water supply pipeline 16;

[0061] The upstream secondary return water heating header 7 is arranged at an upstream position on the secondary return water pipeline 17;

[0062] The downstream secondary return water heating manifold 8 is arranged at a downstream position on the secondary return water pipeline 17 .

[0063] Furthermore, it also includes a secondary supply and return water bypass pipeline 13; the secondary supply and return water bypass pipeline 13 is arranged between the secondary supply water heating manifold 6 and the upstream secondary return water heating manifold 7.

[0064] Furthermore, both the water inlet distribution manifold 2 and the water outlet manifold 10 are provided with a pressure gauge and a temperature gauge.

[0065] Furthermore, a drainage interface is provided at the bottom of the header sleeve 21 for draining the water in the header interlayer 23, and is sealed with a screw plug when the equipment is running.

[0066] Working process:

[0067] First, hot water enters the water inlet distribution manifold 2 through the inlet stop valve 1. The inlet stop valve 1 plays a role of shutoff and regulation. The inlet stop valve 1 is adjusted by the data of the pressure gauge and the temperature gauge on the water inlet distribution manifold 2. After that, the hot water is divided into two paths. One path passes through the heating branch - the inlet valve 3 and enters the heating hose 5. The heating hose 5 is wrapped around the primary water supply pipeline 14 for heating. The heating hose 5 is equipped with connectors at both ends, which can be quickly connected with the hose connector 19 on the secondary water supply heating manifold 6. The hot water flows through the heating hose 5 and enters the manifold interlayer 23 of the secondary water supply heating manifold 6 to heat the working medium in the secondary water supply heating manifold 6;

[0068] The other path enters the heating hose 5 through the second inlet valve 4 of the heating branch line. The heating hose 5 is wrapped around the primary return water pipeline 15 for heating. Both ends of the heating hose 5 are quickly connected to the hose connectors 19 on the upstream secondary return water heating manifold 7 through connectors. Hot water flows through the heating hose 5 and enters the manifold interlayer 23 of the upstream secondary return water heating manifold 7 to heat the working medium in the upstream secondary return water heating manifold 7.

[0069] The hot water in the secondary water supply heating manifold 6 is introduced into the upstream secondary water return heating manifold 7 through the heating hose 5. The heating hose 5 is wound around the secondary water supply and return bypass pipeline 13 to heat it.

[0070] Subsequently, the hot water in the upstream secondary return water heating manifold 7 is divided into a corresponding number of branches (two are shown in the figure) according to the number of return water branches, and enters the manifold interlayer 23 of the downstream secondary return water heating manifold 8 through the heating hose 5 to heat the working medium in the downstream secondary return water heating manifold 8. The heating hose 5 is wrapped around the return water branch to heat it.

[0071] Afterwards, the hot water in the downstream secondary return water heating manifold 8 flows through the heating hose 5 and the heating branch outlet stop valve 9 in turn into the water outlet manifold 10, and the outlet stop valve 11 plays a shutoff and regulating role. Finally, the hot water enters the water outlet manifold 10 and leaves the hot water heating system through the outlet stop valve 11.

[0072] The bypass stop valve 12 between the inlet water distribution manifold 2 and the outlet water manifold 10 plays a regulating role. During normal operation, the bypass stop valve 12 is in a closed state. When the heating amount is greater than the heating amount required by the system, it can be adjusted by controlling the opening of the bypass stop valve 12. The present heating system can achieve heat distribution regulation by adjusting the opening of the heating branch one inlet valve 3 and the heating branch two inlet valve 4. The number of windings of each section of the heating hose 5 can be freely adjusted according to the required heating amount of each section. When the primary water supply pipeline 14 and the primary return water pipeline 15 do not need heating, the heating hose 5 of this section can be directly connected to the secondary water supply heating manifold 6 and the upstream secondary return water heating manifold 7, so as to achieve the purpose of heating only the secondary water supply pipeline 16 and the secondary return water pipeline 17.

[0073] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A hot water tracing structure for a heat exchange unit, comprising a primary water supply pipeline (14), a primary water return pipeline (15), a secondary water supply pipeline (16) and a secondary water return pipeline (17); characterized in that: Also includes: A heating header structure and a heating hose (5); The primary water supply pipeline (14), the primary water return pipeline (15), the secondary water supply pipeline (16) and the secondary water return pipeline (17) are respectively provided with a heating hose (5) for heating; The secondary water supply pipeline (16) and the secondary water return pipeline (17) are both provided with a heating header structure for heating; The heating header structure comprises a header body (20), a header sleeve (21) and a sleeve end cover (22); The header body (20) is a hollow structure, and a plurality of pipe joints (18) are arranged on the header body (20); The header sleeve (21) is sleeved on the header body (20) with a spacing, and a header interlayer (23) is formed between the two; a hose connector (19) is provided on the header sleeve (21), and the header sleeve (21) is connected to the heating hose (5) through the hose connector (19); hot water is injected into the header interlayer (23) through the heating hose (5); There are two sleeve end covers (22), which are respectively arranged at the two ends of the header sleeve (21). The sleeve end covers (22) are sealedly connected to the header body (20) and the header sleeve (21) at the same time.

2. The hot water heating structure of the heat exchange unit according to claim 1, characterized in that: It also includes a water inlet distribution header (2) and a water outlet header (10); The water inlet distribution header (2) is connected to a hot water source, and the water inlet distribution header (2) is connected to a heating header structure via a heating hose (5); the water inlet distribution header (2) receives hot water and distributes the hot water to a header interlayer (23) of the heating header structure via the heating hose (5); The water outlet manifold (10) is connected to the heating manifold structure, and the hot water in the manifold interlayer (23) flows into the water outlet manifold (10) through the heating hose (5).

3. The hot water tracing structure of the heat exchange unit according to claim 2, characterized in that: It also includes an inlet stop valve (1), a heating branch outlet stop valve (9), an outlet stop valve (11) and a bypass stop valve (12); The inlet stop valve (1) is arranged upstream of the water inlet distribution manifold (2) and is used to control the hot water to enter the water inlet distribution manifold (2); The outlet stop valve (11) is arranged downstream of the water outlet manifold (10) and is used to control the discharge of hot water from the water outlet manifold (10); The heat tracing branch outlet stop valve (9) is arranged upstream of the water outlet manifold (10) and is used to control the hot water to enter the water outlet manifold (10); The bypass stop valve (12) is arranged between the water inlet distribution header (2) and the water outlet header (10) and is used to control the flow of hot water from the water inlet distribution header (2) into the water outlet header (10).

4. The hot water tracing structure of the heat exchange unit according to claim 2, characterized in that: The water inlet distribution manifold (2) is connected to a heating branch line 1 inlet valve (3) and a heating branch line 2 inlet valve (4) via a pipe seat; A heating hose (5) connected to an inlet valve (3) of a heating branch line is wound around a primary water supply pipeline (14); A heating hose (5) connected to the second inlet valve (4) of the heating branch line is wound around the primary return water pipeline (15).

5. The hot water heating structure of the heat exchange unit according to claim 1, characterized in that: The heating header structure has three components, namely a secondary water supply heating header (6), an upstream secondary water return heating header (7), and a downstream secondary water return heating header (8); The secondary water supply heating manifold (6) is arranged on the secondary water supply pipeline (16); The upstream secondary return water heating manifold (7) is arranged at an upstream position on the secondary return water pipeline (17); The downstream secondary return water heating manifold (8) is arranged at a downstream position on the secondary return water pipeline (17).

6. The hot water tracing structure of the heat exchange unit according to claim 5, characterized in that: It also includes a secondary water supply and return bypass pipe; the secondary water supply and return bypass pipe is arranged between the secondary water supply heating manifold (6) and the upstream secondary water return heating manifold (7).

7. The hot water tracing structure of the heat exchange unit according to claim 2, characterized in that: The water inlet distribution manifold (2) and the water outlet manifold (10) are both provided with a pressure gauge and a temperature gauge.

8. The hot water tracing structure of the heat exchange unit according to claim 1, characterized in that: A drainage interface is provided at the bottom of the header sleeve (21) for draining water in the header interlayer (23).

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