Control system and operation method for automatic shutdown of high-speed mixed bed

Abstract

The invention discloses a control system for automatic shutdown of a high-speed mixed bed and an operation method.The control system for automatic shutdown of the high-speed mixed bed comprises the high-speed mixed bed and a conductivity detection assembly, the high-speed mixed bed is provided with a water inlet and a water outlet, the water inlet is connected with a water inlet pipe, and the water inlet pipe is provided with a first switch valve; the conductivity detection assembly comprises an online conductivity detector, a sampling pipe and a controller, one end of the sampling pipe is communicated with the water outlet pipe, the other end of the sampling pipe is communicated with the online conductivity detector, and the online conductivity detector is connected with the controller so as to transmit detection data to the controller; the controller is connected with the first switch valve so as to control the first switch valve to be opened and closed according to detection data of the online conductivity detector. According to the control system for automatic shutdown of the high-speed mixed bed, accurate detection of the operation end point of the high-speed mixed bed can be realized, the high-speed mixed bed can be stopped in time when the high-speed mixed bed fails, and waste of water, electricity and human resources is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment equipment, and in particular to a control system and an operation method for automatic shutdown of a high-speed mixed bed. Background Art

[0002] The high-speed mixed bed is the place where ion exchange reactions occur. It is the core equipment of the ion exchange process and is widely used in the field of water treatment in power plants. The pretreated water enters the cation high-speed mixed bed filled with cation (anion) resin, so that various ions in the water are adsorbed on the ion exchange resin, so that the water can be softened. However, the exchange capacity of the resin is limited. At this time, the conductivity of the water outlet of the high-speed mixed bed cannot meet the requirements, so it must be regenerated after its exchange capacity is exhausted. Usually, after the resin fails, it can only be judged by taking out water samples to measure the conductivity, which often misses the failure end point and wastes water, electricity and manpower. Summary of the invention

[0003] The technical problem to be solved by the present invention is that, in view of the defects and shortcomings of the prior art, a control system for automatic shutdown of a high-speed mixed bed is proposed, which can realize accurate detection of the end point of the operation of the high-speed mixed bed and shut down the high-speed mixed bed in time when the high-speed mixed bed fails, thereby avoiding waste of water, electricity and human resources.

[0004] The control system for automatic shutdown of a high-speed mixed bed in an embodiment of the present invention includes: a high-speed mixed bed, the high-speed mixed bed having a water inlet and a water outlet, the water inlet being connected to a water inlet pipe and provided with a first switch valve on the water inlet pipe, and the water outlet being connected to a water outlet pipe; a conductivity detection component, the conductivity detection component including an online conductivity detector, a sampling tube and a controller, one end of the sampling tube being connected to the water outlet pipe, and the other end being connected to the online conductivity detector, the online conductivity detector being connected to the controller to transmit detection data to the controller, and the controller being connected to the first switch valve to control the opening and closing of the first switch valve according to the detection data of the online conductivity detector.

[0005] The control system for automatic shutdown of a high-speed mixed bed according to an embodiment of the present invention comprises a water inlet and a water outlet, wherein the water inlet is connected to a water inlet pipe and a first switch valve is arranged on the water inlet pipe, and the water outlet is connected to a water outlet pipe, and the conductivity detection component comprises an online conductivity detector, a sampling tube and a controller, one end of the sampling tube is connected to the water outlet pipe, and the other end is connected to the online conductivity detector, the online conductivity detector is connected to the controller to transmit detection data to the controller, the controller is connected to the first switch valve to control the opening and closing of the first switch valve according to the detection data of the online conductivity detector, thereby, the online conductivity detector can detect the conductivity of the outlet water in real time and transmit the detection data to the controller, and the controller can control the closing of the first switch valve when receiving abnormal conductivity data, that is, the water inlet is interrupted in time when the high-speed mixed bed fails, so as to realize accurate detection of the operation end point of the high-speed mixed bed and avoid waste of water, electricity and human resources.

[0006] In some embodiments, the online conductivity detector includes a first detector and a second detector, the first detector is used to detect the conductivity of the water sample, and the second detector is used to detect the hydrogen conductivity of the water sample.

[0007] In some embodiments, a second switch valve is provided on the water outlet pipe, the sampling tube is located at the outlet side of the second switch valve, and the controller can control the opening and closing of the second switch valve according to the detection data of the online conductivity detector.

[0008] In some embodiments, a third switch valve is provided on the sampling tube.

[0009] In some embodiments, the control system for automatic shutdown of the high-speed mixed bed also includes a leakage branch, which is connected between the water inlet pipe and the water outlet pipe, and the connection end of the leakage branch and the water inlet pipe is located on the inlet side of the first switch valve, and the connection end of the leakage branch and the water outlet pipe is located on the outlet side of the second switch valve. A fourth switch valve connected to the controller is provided on the leakage branch, and the controller can control the opening and closing of the fourth switch valve according to the detection data of the online conductivity detector.

[0010] The operating method of the control system for automatic shutdown of a high-speed mixed bed according to an embodiment of the present invention, wherein the control system for automatic shutdown of a high-speed mixed bed is the control system for automatic shutdown of a high-speed mixed bed according to the above embodiment, and the operating method comprises:

[0011] The sampling tube draws water samples from the water outlet pipe and sends the water samples to the first detector and the second detector;

[0012] The controller determines whether the high-speed mixed bed fails according to the detection data of the first detector and the second detector;

[0013] The controller controls the opening or closing of the first switch valve, the second switch valve and the third switch valve according to the judgment result.

[0014] The operating method of the control system for automatic shutdown of a high-speed mixed bed in an embodiment of the present invention can obtain the conductivity and hydrogen conductivity of a water sample online by using a first detector and a second detector, and then judge the operating state of the high-speed mixed bed according to the detection results, and use a controller to control the opening and closing of switch valves of different pipelines according to the state of the high-speed mixed bed, so as to judge in real time whether the high-speed mixed bed fails, and terminate the operation in time when it fails, so as to avoid waste of water, electricity and human resources.

[0015] In some embodiments, the controller determines whether the high-speed mixed bed fails according to the detection data of the first detector and the second detector, including:

[0016] The controller continuously receives the conductivity and hydrogen conductivity data and compares them with the conductivity control value X SC and hydrogen conductivity X CC contrast;

[0017] When N consecutive conductivity values ​​are greater than the conductivity control value X SC And N consecutive hydrogen conductivity is greater than hydrogen conductivity X CC When , it is judged that the high-speed mixed bed fails.

[0018] In some embodiments, N is 5, X SC 0.15us / cm, X CC It is 0.08us / cm.

[0019] In some embodiments, the controller controls the opening or closing of the first switch valve, the second switch valve, and the third switch valve according to the judgment result, including:

[0020] When the high-speed mixed bed fails, the controller controls the third switch valve to open.

[0021] In some embodiments, the operation method of the control system for automatic shutdown of the high-speed mixed bed further includes:

[0022] After the third switch valve is opened for a period of time, the controller controls the first switch valve and the second switch valve to close, so that the high-speed mixed bed stops running. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a control system for automatic shutdown of a high-speed mixed bed according to an embodiment of the present invention.

[0024] Reference numerals:

[0025] Water inlet pipe 1, first switch valve 2, high-speed mixed bed 3, water outlet pipe 4, second switch valve 5, sampling tube 6, third switch valve 7, first detector 8, second detector 9, controller 10, leakage branch 11, fourth switch valve 12. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0027] like Figure 1 As shown, the control system for automatic shutdown of a high-speed mixed bed according to an embodiment of the present invention comprises a high-speed mixed bed 3 and a conductivity detection component.

[0028] Specifically, the high-speed mixed bed 3 has a water inlet and a water outlet, the water inlet is connected to a water inlet pipe 1 and a first switch valve 2 is provided on the water inlet pipe 1, the water outlet is connected to a water outlet pipe 4, the conductivity detection component includes an online conductivity detector, a sampling tube 6 and a controller 10, one end of the sampling tube 6 is connected to the water outlet pipe 4, and the other end is connected to the online conductivity detector, the online conductivity detector is connected to the controller 10 to transmit detection data to the controller 10, and the controller 10 is connected to the first switch valve 2 to control the opening and closing of the first switch valve 2 according to the detection data of the online conductivity detector.

[0029] It can be understood that when the purification function of the high-speed mixed bed 3 is normal, various ions in the water are adsorbed on the ion exchange resin, and the conductivity of the water flowing out of the high-speed mixed bed 3 is a composite detection standard. When the purification function of the high-speed mixed bed 3 is abnormal, the ions in the water cannot be effectively adsorbed, and the outlet water conductivity will be abnormal. At this time, the online conductivity detector can transmit the abnormal detection result to the controller 10, and the controller 10 can judge that the high-speed mixed bed 3 has failed and control the first switch valve 2 to close, so that the high-speed mixed bed 3 is shut down in time.

[0030] The control system for automatic shutdown of a high-speed mixed bed according to an embodiment of the present invention comprises a high-speed mixed bed 3 having a water inlet and a water outlet, wherein the water inlet is connected to a water inlet pipe 1 and a first switch valve 2 is arranged on the water inlet pipe 1, and the water outlet is connected to a water outlet pipe 4, and a conductivity detection assembly comprises an online conductivity detector, a sampling tube 6 and a controller 10, one end of the sampling tube 6 is connected to the water outlet pipe 4, and the other end is connected to the online conductivity detector, the online conductivity detector is connected to the controller 10 to transmit detection data to the controller 10, the controller 10 is connected to the first switch valve 2 to control the opening and closing of the first switch valve 2 according to the detection data of the online conductivity detector, thereby, the online conductivity detector can detect the conductivity of the outlet water in real time and transmit the detection data to the controller 10, and the controller 10 can control the closing of the first switch valve 2 when receiving abnormal conductivity data, that is, the water inlet is interrupted in time when the high-speed mixed bed 3 fails, so as to realize the accurate detection of the operation end point of the high-speed mixed bed 3 and avoid the waste of water, electricity and human resources.

[0031] In some embodiments, the online conductivity detector includes a first detector 8 and a second detector 9, wherein the first detector 8 is used to detect the conductivity of the water sample, and the second detector 9 is used to detect the hydrogen conductivity of the water sample. In other words, the present application determines the conductivity of the outlet water based on two parameters, the conductivity of the water sample and the hydrogen conductivity, and the coordinated determination can make the determination result more accurate and the detection reliability high.

[0032] Furthermore, a second switch valve 5 is provided on the outlet pipe 4, and the sampling pipe 6 is located at the outlet side of the second switch valve 5. The controller 10 can control the opening and closing of the second switch valve 5 according to the detection data of the online conductivity detector. In other words, switch valves are provided on the inlet pipe and the outlet pipe of the high-speed mixed bed 3. When the controller 10 and the online conductivity detector determine that the high-speed mixed bed 3 fails, the first switch valve 2 and the second switch valve 5 will be closed, so that the high-speed mixed bed 3 is completely shut down.

[0033] Furthermore, the sampling tube 6 is provided with a third switch valve 7. Thus, when sampling detection is required, the third switch valve 7 can be opened, and when sampling detection is not required, the third switch valve 7 can be closed, thereby avoiding the conductivity detection component from being in operation all the time, saving electricity. For example, in the initial operation stage of the high-speed mixed bed 3, there will be no failure problem in a short time, and the third switch valve 7 does not need to be opened during this period of time, and the third switch valve 7 can be opened after the high-speed mixed bed 3 has been put into operation for a period of time. Alternatively, when the conductivity detection component detects that the high-speed mixed bed 3 has failed, the high-speed mixed bed 3 is shut down and regenerated, and the third switch valve 7 can also be closed to avoid waste.

[0034] In some embodiments, the control system for the automatic shutdown of the high-speed mixed bed further includes a leakage branch 11, the leakage branch 11 is connected between the water inlet pipe 1 and the water outlet pipe 4, and the connection end of the leakage branch 11 and the water inlet pipe 1 is located at the inlet side of the first switch valve 2, and the connection end of the leakage branch 11 and the water outlet pipe 4 is located at the outlet side of the second switch valve 5. The leakage branch 11 is provided with a fourth switch valve 12 connected to the controller 10, and the controller 10 can control the opening and closing of the fourth switch valve 12 according to the detection data of the online conductivity detector. Specifically, when the online conductivity detector and the controller 10 determine that the high-speed mixed bed 3 fails, the fourth switch valve 12 can be opened, so that part of the water flow begins to bypass the high-speed mixed bed 3 through the leakage branch 11, sharing the water intake, so as to prepare for the shutdown of the high-speed mixed bed 3 and avoid the safety hazard caused by excessive system water pressure in the emergency cut-off state.

[0035] The operating method of the control system for automatic shutdown of a high-speed mixed bed of the present invention is the control system for automatic shutdown of a high-speed mixed bed of the above embodiment, and the operating method comprises:

[0036] The sampling tube 6 extracts water samples from the water outlet pipe 4 and sends them to the first detector 8 and the second detector 9;

[0037] The controller 10 determines whether the high-speed mixed bed 3 is failed according to the detection data of the first detector 8 and the second detector 9;

[0038] The controller 10 controls the opening or closing of the first on-off valve 2 , the second on-off valve 5 , and the third on-off valve 7 according to the determination result.

[0039] The operating method of the control system for automatic shutdown of the high-speed mixed bed in the embodiment of the present invention can obtain the conductivity and hydrogen conductivity of the water sample online by using the first detector 8 and the second detector 9, and then judge the operating status of the high-speed mixed bed 3 according to the detection results, and use the controller 10 to control the opening and closing of the switch valves of different pipelines according to the status of the high-speed mixed bed 3, so as to judge in real time whether the high-speed mixed bed 3 fails, and terminate the operation in time when it fails, so as to avoid waste of water, electricity and human resources.

[0040] Furthermore, the controller 10 determines whether the high-speed mixed bed 3 is failed according to the detection data of the first detector 8 and the second detector 9, including:

[0041] The controller 10 continuously receives the data of conductivity and hydrogen conductivity and compares it with the conductivity control value XSC and the hydrogen conductivity XCC;

[0042] When N consecutive conductivity values ​​are greater than the conductivity control value X SC And N consecutive hydrogen conductivity is greater than hydrogen conductivity X CCIn other words, the failure judgment of the high-speed mixed bed 3 in the present application is based on multiple parameters. Only when the abnormal parameters appear continuously will the high-speed mixed bed 3 be judged to be failed, thereby avoiding the risk of misjudgment.

[0043] Furthermore, N is 5, X SC 0.15us / cm, X CC It is 0.08us / cm.

[0044] Further, the controller 10 controls the opening or closing of the first switch valve 2, the second switch valve 5 and the third switch valve 7 according to the judgment result, including: when the high-speed mixed bed 3 fails, the controller 10 controls the third switch valve 7 to open.

[0045] Furthermore, after the third switch valve 7 is opened for a period of time, the controller 10 controls the first switch valve 2 and the second switch valve 5 to close, so that the high-speed mixed bed 3 stops operating. That is, when the high-speed mixed bed 3 fails, the leakage branch 11 is first controlled to operate for a period of time, and then the first switch valve 2 and the second switch valve 5 are closed with a delay, so as to keep the system stable during the shutdown process.

[0046] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0051] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A control system for automatic shutdown of a high-speed mixed bed, characterized in that: include: A high-speed mixed bed, wherein the high-speed mixed bed has a water inlet and a water outlet, wherein the water inlet is connected to a water inlet pipe and a first switch valve is arranged on the water inlet pipe, and the water outlet is connected to a water outlet pipe; A conductivity detection component, the conductivity detection component includes an online conductivity detector, a sampling tube and a controller, one end of the sampling tube is connected to the water outlet pipe, and the other end is connected to the online conductivity detector, the online conductivity detector is connected to the controller to transmit detection data to the controller, and the controller is connected to the first switch valve to control the opening and closing of the first switch valve according to the detection data of the online conductivity detector.

2. The control system for automatic shutdown of a high-speed mixed bed according to claim 1, characterized in that: The online conductivity detector comprises a first detector and a second detector, wherein the first detector is used to detect the conductivity of the water sample, and the second detector is used to detect the hydrogen conductivity of the water sample.

3. The control system for automatic shutdown of a high-speed mixed bed according to claim 2, characterized in that: The water outlet pipe is provided with a second switch valve, the sampling tube is located at the outlet side of the second switch valve, and the controller can control the opening and closing of the second switch valve according to the detection data of the online conductivity detector.

4. The control system for automatic shutdown of a high-speed mixed bed according to claim 3, characterized in that: The sampling tube is provided with a third switch valve.

5. The control system for automatic shutdown of a high-speed mixed bed according to claim 4, characterized in that: It also includes a leakage branch, which is connected between the water inlet pipe and the water outlet pipe, and the connection end of the leakage branch and the water inlet pipe is located on the inlet side of the first switch valve, and the connection end of the leakage branch and the water outlet pipe is located on the outlet side of the second switch valve. A fourth switch valve connected to the controller is provided on the leakage branch, and the controller can control the opening and closing of the fourth switch valve according to the detection data of the online conductivity detector.

6. An operating method of a control system for automatic shutdown of a high-speed mixed bed, characterized in that: The control system for automatic shutdown of the high-speed mixed bed is the control system for automatic shutdown of the high-speed mixed bed according to claim 5, and the operation method comprises: The sampling tube draws water samples from the water outlet pipe and sends the water samples to the first detector and the second detector; The controller determines whether the high-speed mixed bed fails according to the detection data of the first detector and the second detector; The controller controls the opening or closing of the first switch valve, the second switch valve and the third switch valve according to the judgment result.

7. The operating method of the control system for automatic shutdown of a high-speed mixed bed according to claim 6, characterized in that: The controller determines whether the high-speed mixed bed fails according to the detection data of the first detector and the second detector, including: The controller continuously receives the conductivity and hydrogen conductivity data and compares them with the conductivity control value X SC and hydrogen conductivity X CC contrast; When N consecutive conductivity values ​​are greater than the conductivity control value X SC And N consecutive hydrogen conductivity is greater than hydrogen conductivity X CC When , it is judged that the high-speed mixed bed fails.

8. The operating method of the control system for automatic shutdown of a high-speed mixed bed according to claim 7, characterized in that: N is 5, X SC 0.15us / cm, X CC It is 0.08us / cm.

9. The operating method of the control system for automatic shutdown of a high-speed mixed bed according to claim 7, characterized in that: The controller controls the opening or closing of the first switch valve, the second switch valve and the third switch valve according to the judgment result, including: When the high-speed mixed bed fails, the controller controls the third switch valve to open.

10. The operating method of the control system for automatic shutdown of a high-speed mixed bed according to claim 9, characterized in that: Also includes: After the third switch valve is opened for a period of time, the controller controls the first switch valve and the second switch valve to close, so that the high-speed mixed bed stops running.

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