Water supplementing structure of heat exchange unit

Abstract

The utility model relates to the technical field of heat exchange units, in particular to a water replenishing structure of a heat exchange unit, which comprises a primary water net, a secondary water net and a water replenishing structure, the primary water network comprises a primary side water supply pipeline and a primary side water return pipeline; the secondary water network comprises a secondary side water supply pipeline and a secondary side water return pipeline; the water replenishing structure comprises a water replenishing main pipeline and a water replenishing pump, and the water replenishing pump is arranged on the water replenishing main pipeline and used for providing pressure needed by water replenishing; the water inlet end of the water replenishing main pipeline is connected with a primary side water return pipeline; the water outlet end of the water replenishing main pipeline is connected with a secondary side water return pipeline; and an electromagnetic valve is arranged on the water replenishing main pipeline and is opened or closed according to the control signal to control the water replenishing work. A water supplementing tank and a softened water system are omitted, so that the space required by the heat exchange station is remarkably reduced, and the system is particularly suitable for the basement heat exchange station with limited space. According to the utility model, the demand of additional components is reduced, and the total cost of the system, including the installation and maintenance cost, is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange units, in particular to a water replenishment structure of a heat exchange unit. Background Art

[0002] In modern heat exchanger systems, the water supply system is a key part to ensure the normal operation of the system. Traditional water supply systems usually include a water supply tank and a softened water system, as well as a corresponding water level control system. These systems not only take up a lot of space, but also require high investment costs. This design is particularly disadvantageous in basement heat exchange stations with limited space.

[0003] Therefore, it is necessary to develop a water replenishment structure that can eliminate the water replenishment tank in the prior art, so that the structure of the heat exchanger unit is more compact and efficient. Utility Model Content

[0004] The purpose of the utility model is to propose a water replenishment structure for a heat exchanger unit, which eliminates the traditional water replenishment tank and adopts the method of directly connecting the primary side return water pipe to the water replenishment main pipe for water replenishment. This design not only saves space, but also reduces costs. Thus, the technical problem that the water replenishment system in the background technology requires a water replenishment tank that occupies space and has high costs is solved.

[0005] In order to achieve the above-mentioned object, the utility model provides the following technical solutions: a water replenishment structure of a heat exchange unit, comprising a primary water network and a secondary water network, and also comprising a water replenishment structure;

[0006] The primary water network includes a primary water supply pipe and a primary water return pipe;

[0007] The secondary water network includes a secondary water supply pipe and a secondary water return pipe;

[0008] The water replenishment structure includes a water replenishment main pipeline and a water replenishment pump, and the water replenishment pump is arranged on the water replenishment main pipeline to provide the pressure required for water replenishment;

[0009] The water inlet end of the water supply main pipeline is connected to the primary side return water pipeline; the water outlet end of the water supply main pipeline is connected to the secondary side return water pipeline;

[0010] The water replenishment main pipeline is provided with a solenoid valve, which is opened or closed according to a control signal to control the water replenishment work.

[0011] Furthermore, a first manual valve and a second manual valve are respectively provided upstream and downstream of the solenoid valve.

[0012] Furthermore, it also includes a bypass pipeline; the bypass pipeline is connected to the water supply main pipeline; the bypass pipeline and the solenoid valve are in parallel relationship;

[0013] The bypass pipeline is provided with an emergency water supply valve, which serves as a bypass valve of the solenoid valve and is used for emergency water supply when the solenoid valve fails.

[0014] Furthermore, a return water pressure transmitter is provided on the primary-side return water pipeline, and the return water pressure transmitter is used to monitor the pressure of the primary-side return water pipeline.

[0015] The secondary side return water pipeline is provided with a second network return water pressure transmitter, and the second network return water pressure transmitter is used to monitor the pressure of the secondary side return water pipeline.

[0016] Furthermore, it also includes a main water inlet valve and a main water outlet valve; the main water inlet valve is arranged on the water supply main pipeline close to the primary side return pipe; the main water outlet valve is arranged at the end of the water supply main pipeline.

[0017] Furthermore, it also includes a filter, which is arranged on the water supply main pipeline and located between the main water inlet valve and the solenoid valve.

[0018] Furthermore, it also includes a check valve, which is arranged downstream of the water supply pump to prevent water from flowing in the reverse direction.

[0019] Furthermore, it also includes a water replenishment flow meter, which is arranged on the water replenishment main pipeline and located between the check valve and the main water outlet valve.

[0020] Beneficial Effects

[0021] The utility model significantly reduces the space required for the heat exchange station by eliminating the water supply tank and the softened water system, and is particularly suitable for basement heat exchange stations with limited space.

[0022] The utility model reduces the need for additional components and reduces the overall cost of the system, including installation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 It is a structural schematic diagram of the water replenishment structure disclosed in the utility model;

[0025] Figure 2 It is a schematic diagram of the overall structure of the heat exchange unit and the water replenishment structure disclosed in the utility model;

[0026] Figure 3It is a structural schematic diagram of an existing heat exchange unit with a water supply tank.

[0027] In the figure:

[0028] 1. Main water inlet valve; 2. First network return water pressure transmitter; 3. Filter; 4. First manual valve; 5. Solenoid valve; 6. Emergency water supply valve; 7. Second manual valve; 8. Water supply pump; 9. Check valve; 10. Water supply flow meter; 11. Main water outlet valve; 12. Second network return water pressure transmitter; 13. Water supply main pipeline; 14. Bypass pipeline. DETAILED DESCRIPTION

[0029] 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.

[0030] The structural diagram of the existing heat exchange unit with a water supply tank is as follows: Figure 3 As shown; the utility model proposes a water replenishment structure for a heat exchanger unit, which eliminates the traditional water replenishment tank and adopts the method of directly connecting the primary side return water pipe to the water replenishment main pipe for water replenishment. This design not only saves space, but also reduces costs. The specific implementation is as follows:

[0031] like Figure 1-2 As shown, a water replenishment structure of a heat exchange unit includes a primary water network and a secondary water network, wherein the primary water network and the secondary water network perform heat transfer in the heat exchange unit and transfer heat to the secondary water network, the primary water network includes a primary side water supply pipe and a primary side return pipe; the secondary water network includes a secondary side water supply pipe and a secondary side return pipe;

[0032] It also includes a water replenishment structure; the water replenishment structure includes a water replenishment main pipeline 13 and a water replenishment pump 8, and the water replenishment pump 8 is arranged on the water replenishment main pipeline 13 to provide the pressure required for water replenishment;

[0033] The water inlet end of the water supply main pipe 13 is connected to the primary side return pipe; the water outlet end of the water supply main pipe 13 is connected to the secondary side return pipe; the water supply main pipe 13 replenishes the water in the primary side return pipe into the secondary side return pipe;

[0034] The water replenishment main pipeline 13 is provided with a solenoid valve 5, which is opened or closed according to a control signal to control the water replenishment work.

[0035] Furthermore, a first manual valve 4 and a second manual valve 7 are respectively provided upstream and downstream of the solenoid valve 5. When the first manual valve 4 and the second manual valve 7 are both opened, water flows in the main pipeline, passes through the solenoid valve 5, and the water flow is controlled by the solenoid valve 5.

[0036] Furthermore, it also includes a bypass pipe 14; the bypass pipe 14 is connected in parallel to the water supply main pipe 13; the bypass pipe 14 and the solenoid valve 5 are in parallel relationship; the input end of the bypass pipe 14 is arranged upstream of the first manual valve 4, and the output end of the bypass pipe 14 is arranged downstream of the second manual valve 7;

[0037] An emergency water replenishment valve 6 is arranged on the bypass pipe 14. The emergency water replenishment valve 6 serves as a bypass valve of the solenoid valve 5 and is used for emergency water replenishment when the solenoid valve 5 fails. When the solenoid valve 5 fails, the first manual valve 4 and the second manual valve 7 are closed, and the emergency water replenishment valve 6 is opened. The water flow in the water replenishment main pipe 13 will flow into the bypass pipe 14, bypassing the solenoid valve 5 and continuing to flow downward from the bypass pipe 14 to perform water replenishment work.

[0038] Furthermore, a return water pressure transmitter 2 is provided on the primary-side return water pipeline, and the return water pressure transmitter 2 is used to monitor the pressure of the primary-side return water pipeline.

[0039] A secondary return water pressure transmitter 12 is provided on the secondary return water pipeline, and the secondary return water pressure transmitter 12 is used to monitor the pressure of the secondary return water pipeline.

[0040] Furthermore, it also includes a main water inlet valve 1 and a main water outlet valve 11; the main water inlet valve 1 is arranged on the main water supply pipeline 13 near the primary side return water pipeline, and the main water inlet valve 1 is used to control the primary return water to flow into the main water supply pipeline 13;

[0041] The water outlet main valve 11 is arranged at the end of the water supply main pipeline 13 to control the water outlet.

[0042] Furthermore, it also includes a filter 3, which is arranged on the water supply main pipeline 13 and located between the main water inlet valve 1 and the solenoid valve 5; the filter 3 is used to filter impurities in the water flowing into the water supply main pipeline 13.

[0043] Furthermore, a check valve 9 is included, which is arranged downstream of the water supply pump 8 to prevent the water from flowing in the reverse direction.

[0044] Furthermore, it also includes a water replenishment flow meter 10, which is arranged on the water replenishment main pipeline 13, between the check valve 9 and the main water outlet valve 11, and is used to monitor the water replenishment flow.

[0045] The working principle and process are as follows:

[0046] First, open the main water inlet valve 1, let the water flow from the primary side return water pipe into the water supply main pipe 13 and pass through the filter 3. The filter 3 can effectively filter impurities in the water flow to prevent impurities from clogging the solenoid valve 5. Then open the first manual valve 4, the second manual valve 7 and the main water outlet valve 11, and close the emergency water supply valve 6. When the pressure value of the secondary side return water pipe detected by the second network return water pressure transmitter 12 is lower than the set value, the solenoid valve 5 is opened through the PLC output signal, and the water supply pump 8 is turned on after an interval of 3 seconds. While replenishing water, the pressure value of the primary side return water pipe is detected by the first network return water pressure transmitter 2. If the pressure value is lower than 0.5 bar, the water supply structure stops replenishing water and generates an alarm to prevent the pressure value from being too low and causing the water supply pump 8 to burn due to lack of water. When the pressure value detected by the first network return water pressure transmitter 2 is greater than 0.5 bar, the system replenishes water normally. When the pressure value detected by the second network return water pressure transmitter 12 reaches the PLC set value, the water supply pump 8 is turned off and the solenoid valve 5 is closed at the same time. In this way, a cycle of water replenishment is completed.

[0047] It should be noted that if the pressure value of the primary side return pipe is always higher than the pressure value of the secondary side return pipe, the water supply pump 8 does not need to provide additional power, and only the solenoid valve 5 can be opened to carry out water supply work; when the pressure value of the primary side return pipe is lower than the pressure value of the secondary side return pipe, the solenoid valve 5 and the water supply pump 8 need to be opened at the same time to carry out water supply work;

[0048] The emergency water supply valve 6 is a bypass valve of the solenoid valve 5. When the solenoid valve 5 fails, the emergency water supply valve 6 can be opened manually, and the first manual valve 4 and the second manual valve 7 can be closed to perform emergency manual water supply.

[0049] 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 water replenishment structure for a heat exchange unit, comprising a primary water network and a secondary water network, characterized in that: It also includes water replenishment structures; The primary water network includes a primary water supply pipe and a primary water return pipe; The secondary water network includes a secondary water supply pipe and a secondary water return pipe; The water replenishment structure comprises a water replenishment main pipeline (13) and a water replenishment pump (8), wherein the water replenishment pump (8) is arranged on the water replenishment main pipeline (13) to provide the pressure required for water replenishment; The water inlet end of the water supply main pipeline (13) is connected to the primary side return water pipeline; the water outlet end of the water supply main pipeline (13) is connected to the secondary side return water pipeline; The water replenishment main pipeline (13) is provided with a solenoid valve (5), and the solenoid valve (5) is opened or closed according to a control signal to control the water replenishment work.

2. The water replenishment structure of the heat exchange unit according to claim 1, characterized in that: A first manual valve (4) and a second manual valve (7) are respectively arranged upstream and downstream of the solenoid valve (5).

3. The water replenishment structure of the heat exchange unit according to claim 2, characterized in that: It also includes a bypass pipeline (14); the bypass pipeline (14) is connected to the water supply main pipeline (13); the bypass pipeline (14) and the solenoid valve (5) are in parallel relationship; The bypass pipe (14) is provided with an emergency water supply valve (6), which serves as a bypass valve of the solenoid valve (5) and is used for emergency water supply when the solenoid valve (5) fails.

4. The water replenishment structure of the heat exchange unit according to claim 1, characterized in that: A return water pressure transmitter (2) is provided on the primary return water pipeline, and the return water pressure transmitter (2) is used to monitor the pressure of the primary return water pipeline; The secondary side return water pipeline is provided with a second network return water pressure transmitter (12), and the second network return water pressure transmitter (12) is used to monitor the pressure of the secondary side return water pipeline.

5. The water replenishment structure of the heat exchange unit according to claim 1, characterized in that: It also comprises a main water inlet valve (1) and a main water outlet valve (11); the main water inlet valve (1) is arranged on the main water supply pipeline (13) at a position close to the primary side return water pipeline; the main water outlet valve (11) is arranged at the end of the main water supply pipeline (13).

6. The water replenishment structure of the heat exchange unit according to claim 5, characterized in that: It also comprises a filter (3), which is arranged on the water supply main pipeline (13) and located between the main water inlet valve (1) and the solenoid valve (5).

7. The water replenishment structure of the heat exchange unit according to claim 6, characterized in that: It also includes a check valve (9), which is arranged downstream of the water replenishment pump (8) and is used to prevent water from flowing in the opposite direction.

8. The water replenishment structure of the heat exchange unit according to claim 7, characterized in that: It also comprises a water replenishment flow meter (10), which is arranged on the water replenishment main pipeline (13) and located between the check valve (9) and the main water outlet valve (11).

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