Precipitation type cooling water purification system

Abstract

The utility model discloses a sedimentation type cooling water purification system which comprises two sedimentation tanks arranged in an outer frame side by side, water collecting tank steel is fixed at the tops of inner cavities of the sedimentation tanks, water outlet pipes are fixedly communicated with the positions, corresponding to the water collecting tank steel, of the outer walls of the sedimentation tanks, and sludge discharge pipes are fixedly communicated with the bottom ends of the sedimentation tanks. And the tail end of the sludge discharge pipe is communicated with an external drainage trench. The utility model relates to the technical field of centrifugal pump cooling and purifying equipment. According to the utility model, high-temperature water is subjected to regular standing and laminar slow release in the sedimentation tank, so that fine impurities such as rust, silt and suspended matters entrained in a system can be effectively settled, the impurities are prevented from directly entering a bearing and a sealed cooling chamber, the quality of cooling water is improved, and the problem of excessive dependence on a filter in the original scheme is avoided; the content of impurities before entering a filtering pipeline is reduced in a precipitation pretreatment manner, so that the blocking frequency of a filter screen is reduced from the source, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of centrifugal pump cooling and purification equipment, specifically a sedimentation-type cooling water purification system. Background Technology

[0002] In thermal systems or industrial heating systems, single-stage double-suction horizontal split-case centrifugal pumps are widely used for transporting high-temperature circulating water. In existing technologies, to effectively cool the pump bearings and sealing components, an internal circulation cooling method is typically employed. This involves drawing a portion of high-temperature circulating water from the pump inlet, filtering it for impurities through a two-stage filter valve connected in series via existing pipelines, and then introducing it into the pump's bearing and sealing cooling chambers. After cooling, the water is returned to the circulating water system through a pipeline connected to the pump body.

[0003] However, with the continuous expansion of system capacity and the addition of multiple new branches, the concentration of silt, rust, and other suspended impurities in the entire high-temperature circulation system is constantly increasing. Existing filters, limited by their structure and drainage cycle, are unable to effectively remove these fine impurities in a short time. These impurities continuously accumulate on the filter screens of the two-stage filter valves in the cooling water passage, easily causing blockages, restricting or even interrupting the cooling water flow, ultimately leading to cooling system failure, and consequently affecting the safe operation of the water pump and the lifespan of the equipment.

[0004] Therefore, this utility model provides a sedimentation-type cooling water purification system to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a sedimentation-type cooling water purification system, which solves the aforementioned problems.

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

[0007] A sedimentation-type cooling water purification system includes an outer frame and further includes:

[0008] Two sedimentation tanks are arranged side by side within the outer frame. A water collection trough steel is fixed to the top of the inner cavity of the sedimentation tank. A water outlet pipe is fixedly connected to the outer wall of the sedimentation tank at the position corresponding to the water collection trough steel. A sludge discharge pipe is fixedly connected to the bottom of each sedimentation tank. The end of the sludge discharge pipe is connected to an external drainage ditch.

[0009] The clear water tank is fixed to one side of the sedimentation tank and installed inside the outer frame. A conduit connecting to the outlet pipe is fixed to the top of the side wall of the clear water tank, and a clear water outlet pipe is fixed to the bottom of the side wall of the clear water tank. The clear water outlet pipe is connected to the water pump bearing of an external centrifugal pump and a sealed cooling chamber through two sets of pressure pumps arranged in parallel.

[0010] A central water distribution pipe is vertically installed at the center of the sedimentation tank. A reflector plate is fixed in the inner cavity of the sedimentation tank corresponding to the bottom of the central water distribution pipe. An inlet pipe extending into the interior of the central water distribution pipe is fixed on the top wall of the outer frame. The other end of the inlet pipe is connected to the high-temperature water return pipeline of an external centrifugal pump through a connecting pipe.

[0011] Preferably, the central water distribution pipe is fixed to the top wall of the outer frame by a supporting channel steel, and a supporting angle steel is fixed to the top of the outer wall of the outer frame.

[0012] Preferably, solenoid valves PV101 and PV102 are respectively installed on the inlet pipes of the two central water distribution pipes. Solenoid valve PV101 is electrically connected to pressure display controller PIC101, and solenoid valve PV102 is electrically connected to pressure display controller PIC102. Solenoid valve PV103 is installed on the sludge discharge pipe, and solenoid valve PV103 is electrically connected to pressure display controller PIC103.

[0013] Preferably, a flow transmitter FT101 and a pressure transmitter PT101 are installed on the connecting pipe connected to the water inlet pipe. The flow transmitter FT101 is connected to an external PLC controller via RS-485 communication, and the pressure transmitter PT101 is electrically connected to a pressure gauge PI101.

[0014] Preferably, the clear water tank is equipped with a level transmitter LT101, and the level transmitter LT101 is electrically connected to a level display controller LIC101.

[0015] Beneficial effects

[0016] This invention provides a sedimentation-type cooling water purification system. Compared with the prior art, it has the following advantages:

[0017] (1) In this sedimentation cooling water purification system, the high-temperature water is allowed to settle and slowly release in the sedimentation tank at regular intervals. This effectively settles fine impurities such as rust, silt, and suspended solids carried in the system, preventing impurities from directly entering the bearings and sealed cooling chambers, thus improving the quality of the cooling water. This avoids the problem of over-reliance on filters in the original scheme. By reducing the impurity content before entering the filter pipeline through sedimentation pretreatment, the frequency of filter clogging is reduced from the source, thus reducing maintenance costs.

[0018] (2) This sedimentation cooling water purification system achieves automation and precision in each control link by setting up automatic monitoring and control devices for liquid level, flow rate, and pressure, making the cooling water supply more timely and efficient, ensuring the safe operation of bearings and sealing structures in high-temperature environments. It adopts a PLC controller to centrally manage the operating status of each solenoid valve, transmitter and booster pump, and has functions such as automatic start and stop, pressure monitoring, flow regulation and sewage management, which improves the intelligence and adjustability of the system. Attached Figure Description

[0019] Figure 1 This is a top view of the structure of this utility model;

[0020] Figure 2 This is the utility model Figure 1 Sectional view of AA in the middle;

[0021] Figure 3 This is a system process flow diagram of this utility model.

[0022] In the diagram: 1. Outer frame; 2. Sedimentation tank; 3. Clear water tank; 4. Central water distribution pipe; 5. Supporting channel steel; 6. Inlet pipe; 7. Reflector plate; 8. Water collection channel steel; 9. Outlet pipe; 10. Conduit pipe; 11. Sludge discharge pipe; 12. Supporting angle steel; 13. Booster pump. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example:

[0025] Please see Figure 1-3 A sedimentation-type cooling water purification system includes an outer frame 1, and further includes:

[0026] Two sedimentation tanks 2 are arranged side by side inside the outer frame 1. A water collection trough steel 8 is fixed to the top of the inner cavity of the sedimentation tank 2. A water outlet pipe 9 is fixedly connected to the outer wall of the sedimentation tank 2 at the position corresponding to the water collection trough steel 8. A sludge discharge pipe 11 is fixedly connected to the bottom of the sedimentation tank 2. The end of the sludge discharge pipe 11 is connected to the external drainage ditch.

[0027] Clear water tank 3 is fixed to one side of sedimentation tank 2 and installed inside outer frame 1. A conduit 10 connecting to water outlet pipe 9 is fixed to the top of the side wall of clear water tank 3, and a clear water outlet pipe is fixed to the bottom of the side wall of clear water tank 3. The clear water outlet pipe is connected to the water pump bearing of external centrifugal pump and sealed cooling chamber through two sets of pressure pumps 13 set in parallel.

[0028] The central water distribution pipe 4 is vertically installed at the center of the sedimentation tank 2. A reflector plate 7 is fixed inside the sedimentation tank 2 at the bottom position corresponding to the central water distribution pipe 4. An inlet pipe 6 extending into the interior of the central water distribution pipe 4 is fixed on the top wall of the outer frame 1. The other end of the inlet pipe 6 is connected to the high-temperature water return pipeline of the external centrifugal pump through a connecting pipe.

[0029] The central water distribution pipe 4 is fixed to the top wall of the outer frame 1 by the supporting channel steel 5, and the top of the outer wall of the outer frame 1 is fixed with the supporting angle steel 12.

[0030] Solenoid valves PV101 and PV102 are respectively installed on the inlet pipes 6 of the two central water distribution pipes 4. Solenoid valve PV101 is electrically connected to pressure display controller PIC101, and solenoid valve PV102 is electrically connected to pressure display controller PIC102. Solenoid valve PV103 is installed on the sludge discharge pipe 11. Solenoid valve PV103 is electrically connected to pressure display controller PIC103.

[0031] A flow transmitter FT101 and a pressure transmitter PT101 are installed on the connecting pipe connected to the water inlet pipe 6. The flow transmitter FT101 is connected to an external PLC controller via RS-485 communication, and the pressure transmitter PT101 is electrically connected to a pressure gauge PI101.

[0032] The clear water tank 3 is equipped with a level transmitter LT101, which is electrically connected to a level display controller LIC101.

[0033] In this embodiment, water is first drawn from the high-temperature water return pipeline of the external centrifugal pump and introduced into the corresponding sedimentation tank 2 through the connecting pipe and the inlet pipe 6. Then, the solenoid valves PV101 and PV102 are closed, so that the high-temperature return water containing impurities entering the sedimentation tank 2 undergoes sedimentation for one to two hours. Then, the solenoid valves of each sedimentation tank 2 are opened in sequence to introduce the high-temperature return water into the bottom of the sedimentation tank 2. Under the action of the reflector plate 7, the newly introduced return water forms a laminar flow state at the bottom of the sedimentation tank 2. In the laminar flow state, the water flow is stable and can reach the bottom of the inclined plate below the sedimentation tank 2 more smoothly without disturbing the upper layer. The clear water in the upper layer overflows into the water collection channel steel 8, and then flows into the clear water tank 3 through the conduit 10. Then, it is pressurized by the booster pump 13 and sent to the water pump bearing and sealed cooling chamber through the connecting pipe to cool it down. After that, it returns to the high-temperature water system for recycling.

[0034] In this embodiment, the control method of the inlet solenoid valve of sedimentation tank 2 is as follows: when the liquid level of clear water tank 3 is lower than the preset upper limit value, solenoid valve PV101 is opened; when the flow rate of flow transmitter FT101 reaches the hourly cooling water consumption or the liquid level of clear water tank 3 is higher than the upper limit value, solenoid valve PV101 is closed; if the water level is still lower than the upper limit value at this time, solenoid valve PV102 is opened; when the flow rate of flow transmitter FT101 reaches the hourly cooling water consumption or the liquid level of clear water tank 3 is higher than the upper limit value, solenoid valve PV102 is closed.

[0035] The control method of the sewage discharge solenoid valve is as follows: The daily opening frequency of solenoid valve PV103 is 1 time / hour (modifiable), each time for 20 seconds (modifiable); later, it can be adjusted to 1 time / hour (modifiable), each time for 10 seconds (modifiable) or 1 time / 2 hours (modifiable), each time for 20 seconds (modifiable) according to the on-site water quality observation. The manual / automatic start and stop control of solenoid valve PV103 can be performed on an external PLC controller.

[0036] The control method for booster pump 13 is as follows: Two booster pumps 13 are installed, one in operation and one on standby, controlled by the downstream pressure. The setpoint for the downstream pressure of booster pump 13 is slightly higher than the pressure of the bearing and sealed cooling chamber of the high-temperature water circulating pump. If booster pump 13 is started by frequency converter, when the operating frequency remains lower than the sleep frequency (which can be modified) or the downstream pressure is higher than the setpoint for a certain period of time, booster pump 13 enters sleep mode; however, when the downstream pressure falls below the setpoint, booster pump 13 exits sleep mode and resumes normal operation. Pump frequency and start / stop control can be performed manually or automatically on an external PLC controller.

[0037] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sedimentation-type cooling water purification system, comprising an outer frame (1), characterized in that, Also includes: Two sedimentation tanks (2) are arranged side by side in the outer frame (1). A water collection trough steel (8) is fixed at the top of the inner cavity of the sedimentation tank (2). A water outlet pipe (9) is fixedly connected to the outer wall of the sedimentation tank (2) at the position corresponding to the water collection trough steel (8). A sludge discharge pipe (11) is fixedly connected to the bottom of the sedimentation tank (2). The end of the sludge discharge pipe (11) is connected to the external drainage ditch. Clear water tank (3), the clear water tank (3) is fixed on one side of sedimentation tank (2) and installed in the outer frame (1). The top of the side wall of the clear water tank (3) is fixed with a conduit (10) that connects to the water outlet pipe (9). The bottom of the side wall of the clear water tank (3) is fixed with a clear water outlet pipe. The clear water outlet pipe is connected to the water pump bearing of an external centrifugal pump and a sealed cooling chamber through two sets of parallel pressurizing pumps (13). A central water distribution pipe (4) is vertically installed at the center of the sedimentation tank (2). A reflector plate (7) is fixed in the inner cavity of the sedimentation tank (2) at the bottom position of the central water distribution pipe (4). An inlet pipe (6) extending into the interior of the central water distribution pipe (4) is fixed on the top wall of the outer frame (1). The other end of the inlet pipe (6) is connected to the high-temperature water return pipeline of the external centrifugal pump through a connecting pipe.

2. The sedimentation-type cooling water purification system according to claim 1, characterized in that, The central water distribution pipe (4) is fixed to the top wall of the outer frame (1) by a supporting channel steel (5), and a supporting angle steel (12) is fixed to the top of the outer wall of the outer frame (1).

3. The sedimentation-type cooling water purification system according to claim 1, characterized in that, Solenoid valves PV101 and PV102 are respectively installed on the inlet pipes (6) of the two central water distribution pipes (4). Solenoid valve PV101 is electrically connected to pressure display controller PIC101, and solenoid valve PV102 is electrically connected to pressure display controller PIC102. Solenoid valve PV103 is installed on the sludge discharge pipe (11), and solenoid valve PV103 is electrically connected to pressure display controller PIC103.

4. The sedimentation-type cooling water purification system according to claim 1, characterized in that, A flow transmitter FT101 and a pressure transmitter PT101 are installed on the connecting pipe connected to the water inlet pipe (6). The flow transmitter FT101 is connected to an external PLC controller via RS-485 communication. The pressure transmitter PT101 is electrically connected to a pressure gauge PI101.

5. A sedimentation-type cooling water purification system according to claim 1, characterized in that, The clear water tank (3) is equipped with a level transmitter LT101, which is electrically connected to a level display controller LIC101.

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