Constant liquid level control device of lifting pump room

Abstract

The utility model discloses a lift pump room constant liquid level control device which comprises a water collecting well and a control system, a cover plate is installed above the water collecting well, and a steam outlet is formed in the top of the cover plate. The system further comprises a first high-power lift pump and a second high-power lift pump, the first high-power lift pump and the second high-power lift pump are correspondingly provided with frequency converters respectively, and the control system is electrically connected with the first high-power lift pump and the second high-power lift pump through the frequency converters. A liquid level meter is arranged in the water collecting well and at least used for measuring the highest water level and the lowest water level in the water collecting well. The frequency converter is controlled by the control system, so that the first lifting pump and the second high-power lifting pump are driven to operate, the liquid level meter is used for detecting the liquid level of the water collecting well, and therefore the purposes of automatic flow control and automatic liquid level control are achieved.

Description

Technical Field

[0001] This utility model relates to the field of booster pump room technology, and specifically to a constant liquid level control device for booster pump rooms. Background Technology

[0002] The booster pump station is an essential building in the sewage treatment process. Its working principle is as follows: domestic sewage from the municipal pipe network is collected and pumped into the plant's collection well through various pump stations, and then discharged into the plant through the booster pump station.

[0003] A typical wastewater treatment plant has eight constant-speed booster pumps, with six in operation and two on standby, and a designed treatment capacity of 80,000 m³ / d.

[0004] However, the biggest problem currently facing booster pump stations is that it is impossible to precisely control the influent water level and flow rate to meet requirements solely through manual adjustments. Therefore, there is an urgent need to design a constant liquid level control device for booster pump stations to solve this problem. Utility Model Content

[0005] The purpose of this invention is to provide a constant liquid level control device for booster pump rooms to address the aforementioned shortcomings in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A constant liquid level control device for a booster pump station includes a water collection well and a control system. A cover plate is installed above the water collection well, and a water vapor outlet is provided on the top of the cover plate.

[0008] It also includes a high-power booster pump one and a high-power booster pump two, each of which is equipped with a frequency converter. The control system is electrically connected to the high-power booster pump one and the high-power booster pump two through the frequency converter.

[0009] The water collection well is equipped with a level gauge, which is used to measure at least the highest and lowest water levels in the water collection well.

[0010] In a preferred embodiment provided by this utility model, the cover plate is a movable structure, and the two cover plates can be flipped open and closed.

[0011] In a preferred embodiment provided by this utility model, a base is provided on the outer side of the cover plate, and a fence is fixedly provided on the outer wall of the top of the base.

[0012] In the preferred embodiment provided by this utility model, the high-power booster pump one and the high-power booster pump two are centrifugal pumps, with a head of 9m, a power of 45KW, and a flow rate of 930m3 / h.

[0013] In a preferred embodiment provided by this utility model, the control system is programmed using PLC-Schneider Unity ProXL software.

[0014] In a preferred embodiment provided by this utility model, the frequency converter enables the high-power booster pump one and the high-power booster pump two to receive a 4-20mA current through analog input, and then flexibly adjusts them in combination with PID programming to automatically achieve the required water flow rate.

[0015] In the above technical solution, the constant liquid level control device for booster pump rooms provided by this utility model has the following beneficial effects:

[0016] The control system controls the frequency converter, thereby driving the operation of booster pump one and high-power booster pump two, and uses the level gauge to detect the liquid level in the collection well, thus achieving the purpose of automatic flow control and automatic liquid level control. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a control flowchart provided for an embodiment of a constant liquid level control device for a booster pump room according to the present invention.

[0019] Figure 2 This is a schematic diagram of the water collection well structure provided for an embodiment of a constant liquid level control device for a booster pump station according to this utility model.

[0020] Figure 3 Software of the control system provided for an embodiment of the constant liquid level control device for a booster pump station according to this utility model Figure 1 .

[0021] Figure 4 Software of the control system provided for an embodiment of the constant liquid level control device for a booster pump station according to this utility model Figure 2 .

[0022] Figure 5 Software of the control system provided for an embodiment of the constant liquid level control device for a booster pump station according to this utility model Figure 3 .

[0023] Figure 6 Software of the control system provided for an embodiment of the constant liquid level control device for a booster pump station according to this utility model Figure 4 .

[0024] Figure 7 Software of the control system provided for an embodiment of the constant liquid level control device for a booster pump station according to this utility model Figure 5 .

[0025] Figure 8 Software of the control system provided for an embodiment of the constant liquid level control device for a booster pump station according to this utility model Figure 6 .

[0026] Figure 9 Software of the control system provided for an embodiment of the constant liquid level control device for a booster pump station according to this utility model Figure 7 .

[0027] Figure 10 Software of the control system provided for an embodiment of the constant liquid level control device for a booster pump station according to this utility model Figure 8 .

[0028] Figure 11 Software of the control system provided for an embodiment of the constant liquid level control device for a booster pump station according to this utility model Figure 9 .

[0029] Figure 12 Software of the control system provided for an embodiment of the constant liquid level control device for a booster pump station according to this utility model Figure 10 .

[0030] Figure 13 Software of the control system provided for an embodiment of the constant liquid level control device for a booster pump station according to this utility model Figure 10 one.

[0031] Figure 14 Software of the control system provided for an embodiment of the constant liquid level control device for a booster pump station according to this utility model Figure 10 two.

[0032] 1. Cover plate; 2. Base; 3. Fence; 4. Steam outlet; 5. High-power booster pump one; 6. High-power booster pump two; 7. Frequency converter; 8. Control system; 9. Level gauge. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0034] like Figures 1-14 As shown in the figure, this utility model provides a constant liquid level control device for a booster pump station, including a water collection well and a control system 8. The control system 8 is programmed using PLC-Schneider Unity Pro XL software. The programming software for the control system 8 is as follows: Figures 4-14As shown, a cover plate 1 is installed above the water collection well, and a water vapor outlet 4 is provided on the top of the cover plate 1; it also includes a high-power booster pump 5 and a high-power booster pump 6, and each of the high-power booster pump 5 and the high-power booster pump 6 is equipped with a frequency converter 7. The frequency converter 7 enables the high-power booster pump 5 and the high-power booster pump 6 to receive a 4-20mA current through analog input, and then flexibly adjusts them with PID programming to automatically achieve the required water flow rate. The control system 8 is electrically connected to the high-power booster pump 5 and the high-power booster pump 6 through the frequency converter 7; a level gauge 9 is installed inside the water collection well, and the level gauge 9 is used to measure at least the highest and lowest water levels in the water collection well.

[0035] The control system 8 controls the frequency converter 7, thereby driving the first booster pump 5 and the second high-power booster pump 6 to operate, and the level gauge 9 is used to detect the level of the water collection well, thereby achieving the purpose of automatic flow control and automatic level control.

[0036] In this embodiment, a water collection well and a control system 8 are included. The control system 8 is programmed using PLC-Schneider Unity Pro XL software. The programming software for the control system 8 is as follows: Figures 4-14 As shown, a cover plate 1 is installed above the water collection well, and a water vapor outlet 4 is provided on the top of the cover plate 1;

[0037] It should be noted that, Figure 4 In the middle, from top to bottom on the left are signal input, maximum range, minimum range, high level limit, and low alarm limit;

[0038] It also includes a high-power booster pump 5 and a high-power booster pump 6. Eight centrifugal pumps are installed inside the water collection well. The power of the high-power booster pump 5 and the high-power booster pump 6 is relatively large. Each of the high-power booster pump 5 and the high-power booster pump 6 is equipped with a frequency converter 7. The frequency converter 7 enables the high-power booster pump 5 and the high-power booster pump 6 to input a current of 4-20mA through analog input. Combined with PID programming, it can flexibly adjust to automatically achieve the required water flow rate. The control system 8 is electrically connected to the high-power booster pump 5 and the high-power booster pump 6 through the frequency converter 7.

[0039] The water collection well is equipped with a level gauge 9, which is used to measure at least the highest and lowest water levels in the water collection well.

[0040] In one embodiment of this utility model, the cover plate 1 is a movable structure, and the two cover plates 1 can be flipped open and closed, which facilitates the opening of the cover plate 1 and at the same time protects the wellhead of the water collection well.

[0041] In one embodiment of this utility model, a base 2 is provided on the outer side of the cover plate 1, and a fence 3 is fixedly provided on the outer wall of the top of the base 2, so that the fence 3 can protect the outside of the water collection well.

[0042] In one embodiment of this utility model, the high-power booster pump 5 and the high-power booster pump 6 are centrifugal pumps. The head of the high-power booster pump 5 and the high-power booster pump 6 is 9m, the power is 45KW, and the flow rate is 930m3 / h. By controlling the two high-power booster pumps 5 and 6 as centrifugal pumps, the control of the liquid level inside the water collection well can be better achieved.

[0043] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A constant liquid level control device for a booster pump station, comprising a water collection well and a control system (8), characterized in that, A cover plate (1) is installed above the water collection well, and a water vapor outlet (4) is provided on the top of the cover plate (1). It also includes a high-power booster pump one (5) and a high-power booster pump two (6), and each of the high-power booster pump one (5) and the high-power booster pump two (6) is equipped with a frequency converter (7). The control system (8) is electrically connected to the high-power booster pump one (5) and the high-power booster pump two (6) through the frequency converter (7). The water collection well is equipped with a level gauge (9), which is used to measure at least the highest and lowest water levels in the water collection well.

2. The constant liquid level control device for a booster pump station according to claim 1, characterized in that, The cover plate (1) is a movable structure, and the two cover plates (1) can be flipped open and closed.

3. The constant liquid level control device for a booster pump station according to claim 1, characterized in that, A base (2) is provided on the outer side of the cover plate (1), and a fence (3) is fixedly provided on the outer wall of the top of the base (2).

4. The constant liquid level control device for a booster pump station according to claim 1, characterized in that, The high-power booster pump one (5) and high-power booster pump two (6) are centrifugal pumps. The head of the high-power booster pump one (5) and high-power booster pump two (6) is 9m, the power is 45KW, and the flow rate is 930m3 / h.

5. The constant liquid level control device for a booster pump station according to claim 1, characterized in that, The frequency converter (7) enables the high-power booster pump one (5) and the high-power booster pump two (6) to receive a 4-20mA current through analog input, and then, in conjunction with PID programming adjustment, automatically achieve the required water flow rate.

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