Pipe scale online treatment system and working method thereof

Abstract

The present application relates to the technical field of pipe descaling, and discloses a pipe scale online treatment system and a working method thereof. The pipe scale online treatment system comprises a circulating water bypass pipe, a descaling and purification pipe, a first four-way valve, a second four-way valve, a filter device, an agent dispensing device, and a purification device; the circulating water bypass pipe and the descaling and purification pipe are connected in parallel to a circulating water main pipe by means of the first four-way valve and the second four-way valve, respectively; an inlet of the filter device is connected to the second four-way valve, an outlet of the filter device is connected to an inlet of the purification device, a drain outlet of the purification device is connected to a drain pipe, a clean water outlet of the purification device is connected to an inlet of the agent dispensing device, and an outlet of the agent dispensing device is connected to the first four-way valve. The present application implements online descaling without shutdown of the unit, and has high descaling efficiency; moreover, the system is simple to construct, and can be used for newly built equipment pipes, can also be used to transform existing equipment pipes, and has good compatibility.

Description

A pipeline scale online treatment system and its working method

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on July 24, 2023, with application number 2023109109066 and invention name “A Pipeline Scale Online Treatment System and Its Working Method”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application belongs to the technical field of pipeline descaling, and specifically relates to an online pipeline scale treatment system and a working method thereof. Background Art

[0004] Over the long-term use of pipes, particles in the water combine to form insoluble, poorly soluble, and slightly soluble substances, known as scale. Scale typically forms through a nucleation-growth process: a few scale cores initially form and attach to the pipe surface. Then, more scaling compounds gather around these cores, forming larger scale clusters. This can affect the flow rate and flow rate of the fluid within the pipe, and in severe cases, can even block the pipe.

[0005] Therefore, regular pipe descaling is necessary. Common descaling methods can be roughly divided into three categories: chemical descaling, high-pressure water jet descaling, and mechanical descaling. Chemical descaling involves dissolving and removing scale using appropriate acidic chemicals based on the chemical composition of the scale layer. This method offers low operating costs and thorough descaling. However, existing chemical descaling methods often require the application of high concentrations of descaling agents to the pipes after shutdown to achieve a high descaling rate. This, in turn, requires thorough cleaning, which can affect the normal operation of the unit.

[0006] Summary of the Invention

[0007] In order to solve the above existing problems, the purpose of this application is to provide an online pipeline scale treatment system and a working method thereof, which can chemically descale the circulating water main pipeline without stopping the machine and has high descaling efficiency.

[0008] This application is implemented through the following technical solutions:

[0009] The present application discloses an online pipeline scale treatment system, comprising a circulating water bypass pipeline, a scale removal and purification pipeline, a first four-way valve, a second four-way valve, a filtering device, a dispensing device, and a purification device;

[0010] The circulating water bypass pipe and the descaling and purification pipe are respectively connected in parallel to the circulating water main pipe through a first four-way valve and a second four-way valve; the inlet of the filtering device is connected to the second four-way valve, the outlet of the filtering device is connected to the inlet of the purification device, the sewage outlet of the purification device is connected to the sewage pipe, the clean water outlet of the purification device is connected to the inlet of the dispensing device, and the outlet of the dispensing device is connected to the first four-way valve.

[0011] Optionally, a circulating water bypass pump is provided on the circulating water bypass pipeline.

[0012] Optionally, a descaling and purification pump is provided on the descaling and purification pipeline.

[0013] Optionally, a sewage valve is provided on the sewage pipe.

[0014] Optionally, the filtering device includes a filter cartridge, a scale collecting box, a scale discharge pipe and a filter screen; the filter screen is arranged obliquely in the filter cartridge; the filter cartridge is provided with a water inlet, a scale flushing port, a scale discharge port and a water outlet, the water inlet and the scale flushing port are respectively connected to the scale removal and purification pipe through branch pipes, and the water outlet is connected to the scale removal and purification pipe; the scale flushing port is arranged at the starting end of the filter screen, and the scale discharge port is arranged at the end of the filter screen; the scale discharge port is connected to the scale collecting box through a scale discharge pipe; a water inlet valve is provided in the water inlet, a scale flushing valve is provided in the scale flushing port, and a scale discharge valve is provided in the scale discharge port.

[0015] Optionally, the dirt discharge pipe is a gradually expanding trumpet pipe.

[0016] Optionally, a gravity sensor is provided at the bottom of the filter screen, and the gravity sensor is linked to the signals of the water inlet valve, the scale flushing valve and the scale discharge valve.

[0017] Optionally, the dispensing device includes a mixing box and a medicine box, the medicine box is connected to the mixing box through a medicine inlet pipe, the mixing box is connected to a water inlet pipe and a liquid outlet pipe, and the liquid outlet pipe is connected to the descaling and purification pipeline; a plurality of agitators are provided in the mixing box.

[0018] Optionally, the number of the stirrers is at least 2, and the heights of adjacent stirrers are different.

[0019] The working method of the above-mentioned pipeline scale online treatment system disclosed in this application includes:

[0020] When the circulating water main pipeline does not need to be descaled, the circulating water bypass pipeline and the descaling and purification pipeline are closed, and the circulating water flows through the circulating water main pipeline;

[0021] When the circulating water main pipeline needs to be descaled, the circulating water bypass pipeline and the descaling and purification pipeline are controlled to be opened through the first four-way valve and the second four-way valve, and the circulating water is connected to the circulating water bypass pipeline to continue to maintain the normal operation of the unit, and the circulating water main pipeline and the descaling and purification pipeline form a descaling circulation loop; the dispensing device adds the descaling agent to the descaling and purification pipeline, and the fallen scale is filtered and discharged after being filtered by the filtering device, and the water body enters the purification device for purification, and the sewage is discharged through the sewage pipeline, and the purified water continues to circulate; after the descaling is completed, the circulating water main pipeline and the descaling and purification pipeline are flushed, the circulating water bypass pipeline and the descaling and purification pipeline are closed, and the circulating water circulates through the circulating water main pipeline again.

[0022] Compared with the existing technology, this application has the following beneficial technical effects:

[0023] The present application discloses an online scale treatment system for pipelines. By setting a first four-way valve and a second four-way valve on the circulating water main pipeline of the unit itself, and setting a circulating water bypass pipeline and a descaling and purification pipeline in parallel with the circulating water main pipeline, when the circulating water main pipeline needs to be descaled, the circulating water bypass pipeline can continue to maintain normal operation of the unit, and the circulation loop formed by the circulating water main pipeline and the descaling and purification pipeline is chemically descaled by a dispensing device. The detached large pieces of scale are collected by a filtering device to avoid clogging the pipeline. After the water body is purified by the purification device, the sewage is discharged to the system for subsequent water treatment, and the remaining purified water can continue to participate in the circulation. The present application realizes online descaling without stopping the unit, and the descaling efficiency is high. In addition, the system is simple to construct and can be used on newly built equipment pipelines or to modify existing equipment pipelines, with good compatibility.

[0024] Optionally, the filter screen is tilted inside the filter device, which helps some of the scale to be discharged into the scale collection box through the scale discharge pipe under the action of gravity; when there is a lot of scale on the filter screen, water can be introduced through the scale flushing port facing the filter screen to force the scale into the scale collection box, which is convenient and fast and does not affect normal operation.

[0025] Optionally, the scale discharge pipe is a gradually expanding trumpet pipe, which is conducive to scale discharge and avoids blockage.

[0026] Optionally, a gravity sensor is provided at the bottom of the filter screen, which can monitor the total weight of the scale on the filter screen in real time. When the threshold is reached, the scale flushing operation is realized through the signal linkage with the water inlet valve, scale flushing valve and scale discharge valve.

[0027] Optionally, the dispensing device can provide an independent mixing box and medicine box to mix the medicine evenly before entering the pipeline, thereby avoiding damage to part of the pipeline due to excessive concentration of medicine; the agitator inside the mixing box can effectively improve the mixing effect.

[0028] Optionally, the number of agitators is at least 2 to avoid the limited range of action of a single agitator, the existence of dead zones in the mixing box, and uneven mixing; the heights of adjacent agitators are different, so that the ranges of action of the agitators interfere with each other, further improving the mixing effect.

[0029] The working method of the above-mentioned pipeline scale online treatment system disclosed in the present application is simple to operate and has a high degree of automation. It can effectively improve the descaling effect and descaling efficiency of the pipeline and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a schematic diagram of the overall structure of the system of the present application;

[0031] FIG2 is a schematic structural diagram of a filtering device;

[0032] FIG3 is a schematic structural diagram of a dispensing device.

[0033] In the figure: 1 is the first four-way valve, 2 is the second four-way valve, 3 is the circulating water bypass pump, 4 is the descaling and purification pump, 5 is the filtering device, 5-1 is the filter cartridge, 5-2 is the scale collecting box, 5-3 is the scale discharge pipe, 5-4 is the filter screen, 5-5 is the water inlet valve, 5-6 is the scale flushing valve, 5-7 is the scale discharge valve, 6 is the dispensing device, 6-1 is the mixing box, 6-2 is the medicine box, 6-3 is the agitator, 6-4 is the water inlet pipe, 6-5 is the liquid outlet pipe, 7 is the purification device, and 8 is the sewage valve. DETAILED DESCRIPTION

[0034] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments, the contents of which are intended to explain but not limit the present application:

[0035] As shown in FIG1 , an online pipeline scale treatment system of the present application includes a circulating water bypass pipeline, a descaling and purification pipeline, a first four-way valve 1 , a second four-way valve 2 , a filtering device 5 , a dispensing device 6 , and a purification device 7 ;

[0036] The circulating water bypass pipeline and the descaling and purification pipeline are respectively connected in parallel to the circulating water main pipeline through the first four-way valve 1 and the second four-way valve 2; the inlet of the filtering device 5 is connected to the second four-way valve 2, the outlet of the filtering device 5 is connected to the inlet of the purification device 7, the sewage outlet of the purification device 7 is connected to the sewage pipeline, the clean water outlet of the purification device 7 is connected to the inlet of the dispensing device 6, and the outlet of the dispensing device 6 is connected to the first four-way valve 1.

[0037] In a preferred embodiment of the present application, a circulating water bypass pump 3 is provided on the circulating water bypass pipeline.

[0038] In a preferred embodiment of the present application, a descaling and purification pump 4 is provided on the descaling and purification pipeline.

[0039] In a preferred embodiment of the present application, a sewage valve 8 is provided on the sewage pipe.

[0040] As shown in Figure 2, in a preferred embodiment of the present application, the filter device 5 includes a filter cartridge 5-1, a scale collecting box 5-2, a scale discharge pipe 5-3, and a filter screen 5-4; the filter screen 5-4 is tilted and arranged inside the filter cartridge 5-1; the filter cartridge 5-1 is provided with a water inlet, a scale flushing port, a scale discharge port, and a water outlet; the water inlet and the scale flushing port are respectively connected to the scale removal and purification pipeline via branch pipes, and the water outlet is connected to the scale removal and purification pipeline; the scale flushing port is located at the beginning of the filter screen 5-4, and the scale discharge port is located at the end of the filter screen 5-4; the scale discharge port is connected to the scale collecting box 5-2 via the scale discharge pipe 5-3; the water inlet is provided with a water inlet valve 5-5, the scale flushing port is provided with a scale flushing valve 5-6, and the scale discharge port is provided with a scale discharge valve 5-7. Optionally, the scale discharge pipe 5-3 is a gradually expanding trumpet pipe. Optionally, a gravity sensor is provided at the bottom of the filter screen 5-4, and the gravity sensor is linked to the signals of the water inlet valve 5-5, the scale flushing valve 5-6 and the scale discharge valve 5-7.

[0041] As shown in Figure 3, in a preferred embodiment of the present application, the dispensing device 6 includes a mixing box 6-1 and a medicine box 6-2. The medicine box 6-2 is connected to the mixing box 6-1 via a medicine inlet pipe. The mixing box 6-1 is connected to a water inlet pipe 6-4 and a liquid outlet pipe 6-5, which is connected to the descaling and purification pipeline. A plurality of agitators 6-3 are provided within the mixing box 6-1. Optionally, the number of agitators 6-3 is at least two, and adjacent agitators 6-3 have different heights. Optionally, a pH sensor, concentration sensor, or the like can be installed in the mixing box 6-1 to monitor the pH and concentration of the chemical to prevent poor descaling performance or damage to the pipeline.

[0042] The working method of the above-mentioned pipeline scale online treatment system:

[0043] When the circulating water main pipeline does not need to be descaled, the circulating water bypass pipeline and the descaling and purification pipeline are closed, and the circulating water flows through the circulating water main pipeline;

[0044] When the circulating water main pipeline needs to be descaled, the circulating water bypass pipeline and the descaling and purification pipeline are controlled to be opened through the first four-way valve 1 and the second four-way valve 2, and the circulating water is connected to the circulating water bypass pipeline to continue to maintain the normal operation of the unit. The circulating water main pipeline and the descaling and purification pipeline form a descaling circulation loop; the dispensing device 6 adds the descaling agent to the descaling and purification pipeline, and the fallen scale is filtered by the filtering device 5 and discharged. The water body enters the purification device 7 for purification, and the sewage is discharged through the sewage pipeline, and the purified water continues to circulate; after the descaling is completed, the circulating water main pipeline and the descaling and purification pipeline are flushed, the circulating water bypass pipeline and the descaling and purification pipeline are closed, and the circulating water circulates through the circulating water main pipeline again.

[0045] The specific working method of the filter device 5:

[0046] A gravity sensor is installed at the bottom of filter 5-4, and a weight threshold is set to monitor the total weight of scale on filter 5-4 in real time. When the total weight of the scale does not reach the weight threshold, the water inlet valve 5-5 opens, the scale flushing valve 5-6 and the scale discharge valve 5-7 close, and water enters through the upper water inlet. Larger scale is intercepted on filter 5-4, and the water is discharged through the water outlet. When the total weight of the scale reaches the weight threshold, the water inlet valve 5-5 closes, the scale flushing valve 5-6 and the scale discharge valve 5-7 open, and water enters through the scale flushing port to flush the scale on filter 5-4. The scale then flows from the scale discharge port through the scale discharge pipe 5-3 and into the scale collection tank 5-2 for collection.

[0047] The specific working method of the dispensing device 6:

[0048] When descaling is required, the agent box 6-2 injects the chemical agent into the mixing box 6-1 at a set dosage rate, and injects water to adjust the concentration through the water inlet pipe 6-4 when necessary. The agent is stirred by the agitator 6-3 in the mixing box 6-1 and mixed evenly with water, and then enters the descaling purification pipeline through the liquid outlet pipe 6-5.

[0049] The above description is merely an embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed in the present application, or equivalent structures or equivalent process transformations made using the contents of the description and drawings of the present application, or direct or indirect applications in other related technical fields, should all be covered by the scope of protection of the present application.

Claims

1. An online pipeline scale treatment system, characterized in that: It comprises a circulating water bypass pipeline, a descaling and purification pipeline, a first four-way valve (1), a second four-way valve (2), a filtering device (5), a dispensing device (6) and a purification device (7); The circulating water bypass pipeline and the descaling and purification pipeline are respectively connected in parallel to the circulating water main pipeline through a first four-way valve (1) and a second four-way valve (2); the inlet of the filtering device (5) is connected to the second four-way valve (2), the outlet of the filtering device (5) is connected to the inlet of the purifying device (7), the sewage outlet of the purifying device (7) is connected to the sewage outlet pipeline, the purified water outlet of the purifying device (7) is connected to the inlet of the dispensing device (6), and the outlet of the dispensing device (6) is connected to the first four-way valve (1).

2. The pipeline scale online treatment system according to claim 1 is characterized in that: A circulating water bypass pump (3) is provided on the circulating water bypass pipeline.

3. The pipeline scale online treatment system according to claim 1 is characterized in that: The descaling and purification pipeline is provided with a descaling and purification pump (4).

4. The pipeline scale online treatment system according to claim 1, characterized in that: The sewage pipe is provided with a sewage valve (8).

5. The pipeline scale online treatment system according to claim 1, characterized in that: The filtering device (5) comprises a filter cartridge (5-1), a scale collecting box (5-2), a scale discharge pipe (5-3) and a filter screen (5-4); the filter screen (5-4) is arranged obliquely in the filter cartridge (5-1); a water inlet, a scale flushing port, a scale discharge port and a water outlet are provided on the filter cartridge (5-1); the water inlet and the scale flushing port are respectively connected to the scale removal and purification pipeline through branch pipes, and the water outlet is connected to the scale removal and purification pipeline; the scale flushing port is arranged at the beginning of the filter screen (5-4), and the scale discharge port is arranged at the end of the filter screen (5-4); the scale discharge port is connected to the scale collecting box (5-2) through the scale discharge pipe (5-3); a water inlet valve (5-5) is provided in the water inlet, a scale flushing valve (5-6) is provided in the scale flushing port, and a scale discharge valve (5-7) is provided in the scale discharge port.

6. The pipeline scale online treatment system according to claim 5, characterized in that: The scale discharge pipe (5-3) is a gradually expanding trumpet pipe.

7. The pipeline scale online treatment system according to claim 5, characterized in that: A gravity sensor is provided at the bottom of the filter screen (5-4), and the gravity sensor is linked to the signals of the water inlet valve (5-5), the scale flushing valve (5-6) and the scale discharge valve (5-7).

8. The pipeline scale online treatment system according to claim 1, characterized in that: The medicine dispensing device (6) comprises a mixing box (6-1) and a medicine box (6-2); the medicine box (6-2) is connected to the mixing box (6-1) via a medicine inlet pipe; the mixing box (6-1) is connected to a water inlet pipe (6-4) and a liquid outlet pipe (6-5); the liquid outlet pipe (6-5) is connected to the descaling and purification pipeline; a plurality of stirrers (6-3) are arranged in the mixing box (6-1).

9. The pipeline scale online treatment system according to claim 8, characterized in that: The number of the stirrers (6-3) is at least 2, and the heights of adjacent stirrers (6-3) are different.

10. A working method of an online pipeline scale treatment system, wherein the system is an online pipeline scale treatment system as claimed in any one of claims 1 to 9, characterized in that: The working method comprises: When the circulating water main pipeline does not need to be descaled, the circulating water bypass pipeline and the descaling and purification pipeline are closed, and the circulating water flows through the circulating water main pipeline; When the circulating water main pipeline needs to be descaled, the first four-way valve (1) and the second four-way valve (2) are used to control the opening of the circulating water bypass pipeline and the descaling and purification pipeline, and the circulating water is connected to the circulating water bypass pipeline to continue to maintain the normal operation of the unit, and the circulating water main pipeline and the descaling and purification pipeline form a descaling circulation loop; the dispensing device (6) adds the descaling agent to the descaling and purification pipeline, and the fallen scale is filtered by the filtering device (5) and then discharged, and the water enters the purification device (7) for purification, and the sewage is discharged through the sewage pipeline, and the purified water continues to circulate; after the descaling is completed, the circulating water main pipeline and the descaling and purification pipeline are flushed, the circulating water bypass pipeline and the descaling and purification pipeline are closed, and the circulating water circulates through the circulating water main pipeline again.

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