A lithium bromide cold and hot water unit solution filling device

Abstract

This invention provides a solution filling device for a lithium bromide hot and cold water unit, including a solution tank, a self-priming pump, a self-priming pump outlet pipe, a control valve inlet pipe, and a control valve. Both the self-priming pump and the control valve are installed on the top of the solution tank. The inlet of the self-priming pump is connected to the solution tank, and the self-priming pump extends into the interior of the solution tank through the outlet pipe, thereby drawing the solution from the solution tank into the solution tank. The control valve extends into the interior of the solution tank through the inlet pipe, and its outlet is connected to the lithium bromide unit. Opening the control valve transfers the solution from the solution tank into the lithium bromide unit. This design avoids the intake of air, and even if air is drawn in, it can escape through the vent at the top. The degassed solution automatically enters the space on the other side from the upper part of the partition and then enters the lithium bromide unit through the control valve inlet pipe, thus preventing the introduction of air and improving filling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically to a device for adding solution to a lithium bromide hot and cold water unit. Background Technology

[0002] Currently, lithium bromide solution is packaged and transported in 25L or 200L chemical drums. When adding solution to a lithium bromide chiller / hot water unit, the solution needs to be drawn from multiple chemical drums and added intermittently. The following method is typically used: utilizing the negative pressure within the unit, the solution is directly drawn from the chemical drums through a pipe. However, when alternating between two chemical drums, air can enter the pipe during the transfer process. This inevitably introduces some air into the unit, and lithium bromide chillers require special attention to prevent air from entering the unit, as this can cause internal electrochemical corrosion and affect heat exchange. Furthermore, the need to alternate between multiple drums reduces operational efficiency and increases labor intensity. Utility Model Content

[0003] In view of this, the present invention aims to provide a solution filling device for lithium bromide hot and cold water units to solve the problem in the prior art that air is easily introduced during solution filling, causing electrochemical corrosion inside the unit.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A solution filling device for a lithium bromide hot and cold water unit includes a solution tank, a self-priming pump, a self-priming pump outlet pipe, a control valve inlet pipe, and a control valve. The self-priming pump and control valve are both installed on top of the solution tank. The inlet of the self-priming pump is connected to the solution tank, and the self-priming pump extends into the interior of the solution tank through the outlet pipe, thereby drawing the solution from the solution tank into the solution tank. The control valve extends into the interior of the solution tank through the inlet pipe, and its outlet is connected to the lithium bromide unit. Opening the control valve transfers the solution from the solution tank into the lithium bromide unit.

[0006] Furthermore, the self-priming pump and the control valve are arranged opposite each other in the radial direction at the top of the solution tank.

[0007] Furthermore, both the inlet of the self-priming pump and the outlet of the control valve are oriented outwards.

[0008] Furthermore, the outlet end of the self-priming pump is located at or near the bottom of the solution tank, and the inlet end of the control valve is also located at or near the bottom of the solution tank.

[0009] Furthermore, a partition is provided inside the solution tank to separate the outlet end of the outlet pipe from the inlet end of the inlet pipe.

[0010] Furthermore, after the partition is installed inside the solution tank, the bottom of the partition is connected and fixed to the bottom of the solution tank, and the two sides of the partition are connected to the inner wall of the solution tank.

[0011] Furthermore, the top of the partition is higher than the outlet end of the outlet pipe and the inlet end of the inlet pipe, and the top of the partition is disconnected from the top of the solution tank.

[0012] Furthermore, a vent is provided on the top of the solution tank.

[0013] Furthermore, the lithium bromide hot and cold water unit solution filling device also includes a control valve to control the liquid level and a self-priming pump to control the liquid level gauge, which are used to detect the liquid level on both sides of the partition and adjust the on / off state of the control valve and the self-priming pump according to the detected liquid level.

[0014] Furthermore, the control valve level gauge and the self-priming pump level gauge are located on the outer side wall of the solution tank. The control valve level gauge and the self-priming pump level gauge are arranged opposite to each other. The lower parts of the control valve level gauge and the self-priming pump level gauge are close to the bottom of the solution tank, and the upper parts of the control valve level gauge and the self-priming pump level gauge are close to the top of the solution tank.

[0015] Compared with existing technologies, the lithium bromide chiller / hot water unit solution filling device of this utility model has the following advantages:

[0016] The continuous dispensing device provided by this utility model separates the interior of the solution tank by a partition, forming two spaces with separate bottoms and connected tops. This prevents air from being drawn in. Even if air is drawn in, it can overflow through the vent at the top. The degassed solution automatically enters the space on the other side from the top of the partition and then enters the lithium bromide unit through the inlet pipe of the control valve, thus avoiding the introduction of air and improving dispensing efficiency. Attached Figure Description

[0017] Figure 1 This is an axial view of the filling device described in an embodiment of the present utility model;

[0018] Figure 2 This is a perspective view of the dispensing device described in an embodiment of the present utility model;

[0019] Figure 3 This is a front view of the dispensing device described in an embodiment of the present utility model;

[0020] Figure 4This is a rear view of the dispensing device according to an embodiment of the present utility model;

[0021] Figure 5 This is a top view of the filling device described in an embodiment of the present utility model;

[0022] Figure 6 for Figure 5 A sectional view of EE.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1 Solution tank, 11 Baffle, 12 Vent hole, 2 Self-priming pump, 3 Self-priming pump outlet pipe, 31 Outlet pipe outlet end, 32 Self-priming pump inlet, 4 Control valve inlet pipe, 41 Inlet pipe inlet end, 5 Control valve, 51 Control valve outlet, 6 Control valve control level gauge, 7 Self-priming pump control level gauge. Detailed Implementation

[0025] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. In addition, the orientations involved in the following specific embodiments are briefly explained: the directions or positional relationships indicated by "front," "rear," "up," "down," "left," "right," "top," and "bottom" mentioned in the embodiments refer to the orientations or positional relationships shown in the accompanying drawings. The term "on..." means directly or indirectly supported by the... element.

[0026] It should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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, an electrical connection, or a connection that allows for communication; 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 invention according to the specific circumstances.

[0027] like Figures 1-6 As shown, a solution filling device for a lithium bromide hot and cold water unit includes a solution tank 1, a self-priming pump 2, a self-priming pump outlet pipe 3, a control valve inlet pipe 4, and a control valve 5. The self-priming pump 2 and control valve 5 are both installed on top of the solution tank 1. The self-priming pump inlet 32 ​​is connected to a solution tank (not shown in the figure). The self-priming pump 2 extends into the solution tank 1 through the self-priming pump outlet pipe 3, thereby drawing the solution from the solution tank into the solution tank 1. The control valve 5 extends into the solution tank 1 through the control valve inlet pipe 4, and the control valve outlet 51 is connected to the lithium bromide unit. Opening the control valve 5 transfers the solution from the solution tank 1 to the lithium bromide unit.

[0028] The self-priming pump 2 and the control valve 5 are arranged opposite each other in the radial direction at the top of the solution tank 1, that is, the self-priming pump 2 and the control valve 5 are located on the radial sides of the solution tank 1 respectively, so as to avoid mutual interference between the self-priming pump outlet pipe 3 and the control valve inlet pipe 4 and ensure that both can work normally.

[0029] Furthermore, both the self-priming pump inlet 32 ​​and the control valve outlet 51 are positioned facing outwards, which facilitates the connection of the self-priming pump inlet 32 ​​to the solution chemical tank and the connection of the control valve outlet 51 to the lithium bromide unit, thereby preventing pipeline accumulation at the top of the solution tank and ensuring unobstructed ventilation holes at the top of the solution tank 1.

[0030] The outlet end 31 of the self-priming pump 2 is located at the bottom or near the bottom of the solution tank 1. The inlet end 41 of the control valve 5 is also located at the bottom or near the bottom of the solution tank 1. A partition 11 is provided inside the solution tank 1, which separates the outlet end 31 of the outlet pipe and the inlet end 41 of the inlet pipe. That is, the outlet end 31 of the outlet pipe and the inlet end 41 of the inlet pipe are located on both sides of the partition 11, so as to prevent the solution entering the solution tank 1 through the outlet end 31 from entering the control valve inlet pipe 4 directly through the inlet end 41 without degassing.

[0031] Furthermore, after the partition 11 is installed inside the solution tank 1, the bottom of the partition 11 is connected and fixed to the bottom of the solution tank 1, the two sides of the partition 11 are connected to the inner wall of the solution tank 1, and the top of the partition 11 is higher than the outlet end 31 of the outlet pipe and the inlet end 41 of the inlet pipe but lower than the top of the solution tank 1. That is, the top of the partition 11 is disconnected from the top of the solution tank 1, so that the solution entering the solution tank 1 through the outlet end 31 of the outlet pipe can reach the inlet end 41 of the inlet pipe after degassing, and then enter the control valve inlet pipe 4.

[0032] A vent 12 is also provided on the top of the solution tank 1. The vent 12 facilitates the discharge of air bubbles brought in by the self-priming pump outlet pipe 3, preventing air bubbles from entering the lithium bromide unit.

[0033] As part of the embodiments of this utility model, the lithium bromide hot and cold water unit solution filling device also includes a control valve controlling the liquid level gauge 6 and a self-priming pump controlling the liquid level gauge 7, which are used to detect the liquid level on both sides of the partition 11, and adjust the on / off state of the control valve 5 and the self-priming pump 2 according to the detected liquid level.

[0034] The control valve level gauge 6 is located on the outer side wall of the solution tank 1. Correspondingly, the self-priming pump level gauge 7 is located on the outer side wall of the solution tank 1. The control valve level gauge 6 and the self-priming pump level gauge 7 are arranged opposite each other. The lower parts of the control valve level gauge 6 and the self-priming pump level gauge 7 are close to the bottom of the solution tank 1 for accurate detection of the liquid level inside the tank. The upper parts of the control valve level gauge 6 and the self-priming pump level gauge 7 are close to the top of the solution tank 1.

[0035] Furthermore, clear scales are provided on the outside of both the control valve level gauge 6 and the self-priming pump level gauge 7 to facilitate accurate reading of the liquid level inside the solution tank 1.

[0036] Specifically, when the self-priming pump control level gauge 7 detects that the liquid level in its connected area is too low, it sends a signal to the self-priming pump 2. The self-priming pump 2 starts and draws solution from the solution chemical tank, discharging it through the self-priming pump outlet pipe 3 to one side of the bottom of the solution tank 1. When the solution inside the solution tank 1 reaches a certain height, it overflows from the top of the partition 11 to the other side. During this process, air bubbles introduced will float to the top of the solution tank 1 due to density differences and be discharged through the vent 12, thus preventing them from being introduced into the lithium bromide unit. When the self-priming pump control level gauge 7 detects that the liquid level in its connected area is too high, it sends a stop signal to the self-priming pump 2, stopping the drawing of solution from the solution chemical tank.

[0037] When the control valve, controlling the level gauge 6, detects that the liquid level in its connected area is too low, it sends a de-energizing signal to the control valve 5, closing the control valve 5 to prevent air from being sucked into the bottom and entering the unit. When the control valve, controlling the level gauge 6, detects that the liquid level in its connected area is too high, it sends an energizing signal to the control valve 5, opening the control valve 5 and adding solution to the unit. When the control valve, controlling the level gauge 6, detects that the liquid level in its connected area is too high, it can also send a stop signal to the self-priming pump 2, stopping the self-priming pump 2 from drawing solution from the chemical solution tank.

[0038] In this embodiment, the control valve 5 can be configured as a normally closed solenoid valve, and the corresponding level controller is also configured as a solenoid valve level controller.

[0039] The continuous dispensing device provided by this utility model detects the corresponding liquid level using a level gauge, separates the interior of the solution tank using a partition, and forms two spaces with separate bottoms and connected tops to prevent air intake. Even if air is drawn in, it can overflow through the vent at the top. The degassed solution automatically enters the space on the other side from the top of the partition and then enters the lithium bromide unit through the control valve inlet pipe 4, thus avoiding the introduction of air and improving dispensing efficiency.

[0040] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A lithium bromide hot and cold water unit solution filling device, characterized in that, The system includes a solution tank (1), a self-priming pump (2), a self-priming pump outlet pipe (3), a control valve inlet pipe (4), and a control valve (5). The self-priming pump (2) and the control valve (5) are both installed on the top of the solution tank (1). The self-priming pump inlet (32) is connected to the solution tank. The self-priming pump (2) extends into the interior of the solution tank (1) through the self-priming pump outlet pipe (3), thereby drawing the solution from the solution tank into the solution tank (1). The control valve (5) extends into the interior of the solution tank (1) through the control valve inlet pipe (4). The control valve outlet (51) is connected to the lithium bromide unit. By opening the control valve (5), the solution inside the solution tank (1) is transferred to the lithium bromide unit.

2. The dispensing device according to claim 1, characterized in that, The self-priming pump (2) and the control valve (5) are arranged opposite each other in the radial direction at the top of the solution tank (1).

3. The dispensing device according to claim 1, characterized in that, The inlet (32) of the self-priming pump and the outlet (51) of the control valve are both oriented outwards.

4. The dispensing device according to claim 1, characterized in that, The outlet end (31) of the outlet pipe of the self-priming pump (2) is located at the bottom or near the bottom of the solution tank (1), and the inlet end (41) of the inlet pipe of the control valve (5) is also located at the bottom or near the bottom of the solution tank (1).

5. The dispensing device according to claim 4, characterized in that, A partition (11) is provided inside the solution tank (1), which separates the outlet end (31) of the outlet pipe from the inlet end (41) of the inlet pipe.

6. The dispensing device according to claim 5, characterized in that, After the partition (11) is installed inside the solution tank (1), the bottom of the partition (11) is connected and fixed to the bottom of the solution tank (1), and the two sides of the partition (11) are connected to the inner wall of the solution tank (1).

7. The dispensing device according to claim 5, characterized in that, The top of the partition (11) is higher than the outlet end (31) of the outlet pipe and the inlet end (41) of the inlet pipe, and the top of the partition (11) is disconnected from the top of the solution tank (1).

8. The dispensing device according to claim 1, characterized in that, A vent (12) is also provided on the top of the solution tank (1).

9. The dispensing device according to claim 5, characterized in that, The lithium bromide hot and cold water unit solution filling device also includes a control valve to control the liquid level gauge (6) and a self-priming pump to control the liquid level gauge (7), which are used to detect the liquid level on both sides of the partition (11) and adjust the on / off state of the control valve (5) and the self-priming pump (2) according to the detected liquid level.

10. The dispensing device according to claim 9, characterized in that, The control valve level gauge (6) and the self-priming pump level gauge (7) are located on the outer side wall of the solution tank (1). The control valve level gauge (6) and the self-priming pump level gauge (7) are arranged opposite to each other. The lower parts of the control valve level gauge (6) and the self-priming pump level gauge (7) are close to the bottom of the solution tank (1), and the upper parts of the control valve level gauge (6) and the self-priming pump level gauge (7) are close to the top of the solution tank (1).

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