Wastewater detecting and sampling device for nuclear power station

Abstract

The utility model relates to a wastewater detection sampling device for a nuclear power station, which comprises a shell and a sampling water pump, a flow cell is arranged in the shell, the shell is connected with a drain pipe, the drain pipe is communicated with the flow cell, a drain valve is arranged on the drain pipe, and the drain pipe is used for draining wastewater in the flow cell back to a wastewater storage container. A water inlet of the sampling water pump is connected with a water supply pipe which extends below the liquid level of the wastewater storage container, and a water outlet of the sampling water pump is communicated with the flow cell. The sampling device can sample waste water in the waste water storage container, the waste water detector is only in contact with the waste water in the detection process, the problems that faults easily occur due to long-time contact with the waste water and the maintenance cost is high do not exist, meanwhile, the waste water storage container does not need to be manually uncovered for sampling, and the sampling efficiency is improved. The sealing cover of the waste water storage container only needs to be provided with the hole, so that the risk that personnel directly contact the waste water is avoided, the dissipation of peculiar smell of the waste water is reduced, the operation steps are simplified, and the personnel safety is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to nuclear power plant equipment technical field especially uses a kind of wastewater detection sampling device for nuclear power plant. BACKGROUND

[0002] In the working scene of nuclear power industry, the liquid in wastewater storage container, such as wastewater pit and wastewater tank, needs to be detected many times. The existing detection means is usually online detection by online detection instrument. In the occasion where online detection instrument cannot be installed, manual sampling detection is used. Since the composition of actual wastewater is relatively complex and has strong corrosiveness, online detection instrument is prone to failure after long-time contact with wastewater. Frequent maintenance and replacement increase a large amount of cost. The sampling method of manually fishing water sample needs the operator to open the sealing cover of wastewater storage container and manually extract sample. Not only is there a risk of direct contact of personnel with wastewater, but also wastewater odor will escape during operation since the sealing cover is opened. UTILITY MODEL CONTENT

[0003] The utility model aims to provide a wastewater detection sampling device for nuclear power plant, so as to replace online detection instrument and manually sample wastewater, thereby avoiding the problems of online detection instrument prone to failure after long-time contact with wastewater, high maintenance cost and complicated manual sampling operation and adverse effect on health.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme.

[0005] A wastewater detection sampling device for nuclear power plant comprises:

[0006] A shell is provided with a flow cell inside. The shell is connected with a drain pipe. The drain pipe is communicated with the flow cell. A drain valve is arranged on the drain pipe. The drain pipe is used to drain wastewater in the flow cell back to a wastewater storage container.

[0007] A sampling water pump is connected with an upper water pipe at the water inlet. The upper water pipe is used to extend below the liquid level of the wastewater storage container. The water outlet of the sampling water pump is communicated with the flow cell.

[0008] In an embodiment of the present application, the shell comprises a shell body and a cover plate. The shell body is provided with the flow cell inside. The cover plate is arranged on the shell body in an openable and closable manner.

[0009] In an embodiment of the present application, the shell body is provided with a fixing mechanism above the flow cell for fixing wastewater detection instrument.

[0010] In an embodiment of the present application, the bottom of the flow cell is arranged in an inclined manner. The drain pipe is communicated with the bottom of the flow cell at the lowest point of the bottom of the flow cell.

[0011] In an embodiment of the present application, the shell is provided with a device compartment isolated from the flow cell, and the sampling water pump is detachably arranged in the device compartment.

[0012] In an embodiment of the present application, the upper water pipe is detachably connected to the water inlet of the sampling water pump, the drain pipe is detachably connected to the shell, and the device compartment can accommodate the upper water pipe and the drain pipe.

[0013] In an embodiment of the present application, a liquid level detection device is further included for detecting the liquid level in the flow cell, and a controller of the nuclear power plant wastewater detection sampling device is in communication connection with the sampling water pump and the liquid level detection device, respectively, and the controller is configured to control the working state of the sampling water pump according to the detection value of the liquid level detection device.

[0014] In an embodiment of the present application, the drain valve is an electrically controlled regulating valve, and the drain valve is in communication connection with the controller of the nuclear power plant wastewater detection sampling device.

[0015] In an embodiment of the present application, a sampling support is further included, which comprises a bearing part and a plurality of telescopic supporting legs arranged below the bearing part in a circumferential interval to drive the bearing part to move up and down, the upper surface of the bearing part is a bearing surface for bearing the shell, and the bottom of the telescopic supporting leg is provided with a roller.

[0016] In an embodiment of the present application, the upper water pipe comprises a hard pipe section and a soft pipe section, one end of the hard pipe section is connected to the water inlet of the sampling water pump, the other end of the hard pipe section is connected to the soft pipe section, the hard pipe section is used to penetrate the sealing cover of the wastewater storage container and is in sliding sealing cooperation with the sealing cover of the wastewater storage container.

[0017] As can be seen from the above technical solutions, the utility model discloses a nuclear power plant wastewater detection sampling device, which comprises a shell and a sampling water pump, wherein the shell is provided with a flow cell, the shell is connected with a drain pipe, the drain pipe is in communication with the flow cell, the drain pipe is provided with a drain valve, the drain pipe is used to drain the wastewater in the flow cell back to a wastewater storage container, the water inlet of the sampling water pump is connected with an upper water pipe, the upper water pipe is used to extend below the liquid level of the wastewater storage container, and the water outlet of the sampling water pump is in communication with the flow cell.

[0018] In the application, a hole is drilled on the sealing cover of the wastewater storage container, the upper water pipe is extended into the wastewater storage container below the liquid level from the hole, the sampling water pump is started and the drain valve is opened, the wastewater enters the flow tank, because the wastewater is static for a long time, the components in the wastewater are not uniform, therefore, in the initial stage, the sampling water pump and the drain valve are opened at the same time, the wastewater is circulated to improve the uniformity of the wastewater, ensure the accuracy of the detection result, after a period of circulation, the opening degree of the drain valve is reduced or the drain valve is closed, the wastewater capacity in the flow tank meets the detection requirement, the probe of the wastewater detector is inserted into the water sample in the flow tank for detection, and the above steps are repeated after the detection data is obtained, until the sampling and detection times meet the requirement, then the sampling water pump is closed and the drain valve is opened, the wastewater in the flow tank is drained, and the wastewater detector can be retained in the shell or taken out from the shell.

[0019] It can be seen that the wastewater detection and sampling device for nuclear power plants can sample the wastewater in the wastewater storage container, the wastewater detector only contacts the wastewater during the detection process, there is no problem of easy failure and high maintenance cost caused by long-time contact with the wastewater, and manual sampling of the wastewater storage container is not required, only a hole needs to be opened on the sealing cover of the wastewater storage container, which not only avoids the risk of direct contact of personnel with the wastewater, but also reduces the diffusion of the peculiar smell of the wastewater, thereby simplifying the operation steps and ensuring the safety of personnel. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 The structure schematic diagram of the wastewater detection and sampling device for nuclear power plants provided by the first embodiment of the present application is shown in the figure.

[0022] Figure 2 The structure schematic diagram of the wastewater detection and sampling device for nuclear power plants provided by the second embodiment of the present application is shown in the figure.

[0023] Figure 3 The structure schematic diagram of the wastewater detection and sampling device for nuclear power plants provided by the third embodiment of the present application is shown in the figure.

[0024] Figure 4 The structure schematic diagram of the wastewater detection and sampling device for nuclear power plants provided by the fourth embodiment of the present application is shown in the figure.

[0025] Figure 5The utility model discloses a structure schematic drawing of the wastewater detection sampling device for nuclear power station provided by the fifth embodiment of the utility model.

[0026] In the drawings:

[0027] 1 is the shell, 101 is the casing, 102 is the cover plate, 1a is the flow cell, 1b is the equipment bin, 2 is the drain pipe, 3 is the drain valve, 4 is the sampling water pump, 5 is the water inlet pipe, 6 is the wastewater storage container, 7 is the sealing cover, 8 is the wastewater detector, 9 is the sampling support, 901 is the bearing part, 902 is the telescopic support leg, 903 is the roller, 904 is the telescopic support rod. DETAILED DESCRIPTION

[0028] The core of the utility model provides a kind of wastewater detection sampling device for nuclear power station, the structure design of the wastewater detection sampling device for nuclear power station makes it can replace on-line detector and manually sample wastewater, avoid on-line detector long time and wastewater contact easily malfunction, maintenance cost is high and the problem that manual sampling operation is cumbersome and is not conducive to health.

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0030] Please refer to Figure 1 , Figure 1 The structure schematic drawing of the wastewater detection sampling device for nuclear power station provided by the first embodiment of the utility model.

[0031] The utility model discloses a kind of wastewater detection sampling device for nuclear power station, the wastewater detection sampling device for nuclear power station includes shell 1 and sampling water pump 4.

[0032] Among them, flow cell 1a is provided in shell 1, shell 1 is made of material with stable chemical properties, corrosion resistance, for example, can be made of stainless steel, aluminum alloy or plastic, shell 1 is connected with drain pipe 2, drain pipe 2 is communicated with flow cell 1a, drain valve 3 is provided on drain pipe 2, drain pipe 2 is used to drain wastewater in flow cell 1a back to wastewater storage container 6, the water inlet of sampling water pump 4 is connected with water inlet pipe 5, water inlet pipe 5 is used to extend below the liquid level of wastewater storage container 6, the water outlet of sampling water pump 4 is communicated with flow cell 1a, water inlet pipe 5, drain pipe 2 and drain valve 3 are made of material with stable chemical properties, corrosion resistance, for example, can be made of stainless steel, aluminum alloy or plastic, and water inlet pipe 5 and drain pipe 2 can be hard tube, hose or the combination structure formed by the connection of the two according to needs.

[0033] In application, drill a hole on the sealing cover 7 of the wastewater storage container 6, extend the water inlet pipe 5 from the hole below the liquid level of the wastewater storage container 6, start the sampling water pump 4 and open the drain valve 3, so that the wastewater enters the flow tank 1a, because the wastewater is static for a long time, the components in the wastewater are not uniform, therefore, in the initial stage, the sampling water pump 4 and the drain valve 3 need to be opened at the same time, so that the wastewater circulates, so as to improve the uniformity of the wastewater, ensure the accuracy of the detection result, after circulating for a period of time, reduce the opening degree of the drain valve 3 or close the drain valve 3, so that the wastewater capacity in the flow tank 1a meets the detection requirement, insert the probe of the wastewater detector 8 into the water sample in the flow tank 1a for detection, and repeat the above steps after obtaining the detection data, until the sampling and detection times meet the requirement, then close the sampling water pump 4 and open the drain valve 3, so that the wastewater in the flow tank 1a is discharged, and the wastewater detector 8 can be retained in the shell 1 or taken out of the shell 1.

[0034] Compared with the prior art, the wastewater detection and sampling device for nuclear power plants provided by the embodiment of the application can sample the wastewater in the wastewater storage container 6, the wastewater detector 8 only contacts the wastewater during the detection process, there is no problem of easy failure and high maintenance cost caused by long-time contact with the wastewater, and manual opening of the sealing cover 7 of the wastewater storage container 6 for sampling is not required, only a hole needs to be opened on the sealing cover 7 of the wastewater storage container 6, which not only avoids the risk of direct contact of personnel with the wastewater, but also reduces the dissipation of the peculiar smell of the wastewater, thereby simplifying the operation steps and ensuring the safety of personnel.

[0035] In an embodiment of the application, the shell 1 includes a shell body 101 and a cover plate 102, the shell body 101 is provided with the flow tank 1a, and the cover plate 102 is provided on the shell body 101 in an openable and closable manner, when sampling, the cover plate 102 can be opened, the wastewater detector 8 is placed, after detection, the wastewater detector 8 is taken out, and the cover plate 102 is closed, so that the wastewater detector 8 is prevented from being corroded by being immersed in the wastewater for a long time, of course, in other embodiments, a through hole for the probe of the wastewater detector 8 to pass through can be formed on the cover plate 102, so that the probe of the wastewater detector 8 can be placed in the wastewater without opening the cover plate 102, and the cover plate 102 is used to be opened when the flow tank 1a is cleaned or the equipment in the shell 1 is overhauled.

[0036] Further optimization of the above technical solution, in an embodiment of the application, a fixing mechanism for fixing the wastewater detector 8 is arranged above the flow tank 1a in the shell body 101, the fixing mechanism includes but is not limited to buckles and clips, so as to facilitate the placement of the wastewater detector 8 in the flow tank 1a.

[0037] In order to ensure that all the wastewater can be discharged from the flow tank 1a, and to avoid the influence of the residual wastewater in the flow tank 1a on the next sampling and detection, in an embodiment of the present application, the bottom of the flow tank 1a is inclined, and the drain pipe 2 is communicated with the lowest point of the bottom of the flow tank 1a. That is, the bottom of the flow tank 1a can be a complete inclined surface, or can be a conical surface. In this way, by connecting the drain pipe 2 to the lowest point of the bottom of the flow tank 1a, it can be ensured that the wastewater in the flow tank 1a is completely discharged, which not only avoids the contact between the personnel and the wastewater during the process of taking and placing the wastewater detection instrument 8, but also avoids the residual wastewater in the flow tank 1a, thereby ensuring the accuracy of the next sampling and detection.

[0038] As shown in Figure 1 In an embodiment of the present application, the shell 1 is provided with a device compartment 1b which is isolated from the flow tank 1a. The sampling water pump 4 is detachably arranged in the device compartment 1b. Placing the sampling water pump 4 in the device compartment 1b can make the outer pipe of the wastewater detection and sampling device for nuclear power plants more neat and beautiful. The water inlet pipe 5 penetrates through the shell 1 and is connected with the sampling water pump 4 inside the shell 1.

[0039] Further optimization of the above technical solution, in an embodiment of the present application, the water inlet pipe 5 is detachably connected to the water inlet of the sampling water pump 4, and the drain pipe 2 is detachably connected to the shell 1. The device compartment 1b can accommodate the water inlet pipe 5 and the drain pipe 2, that is, the device compartment 1b has enough space to accommodate the water inlet pipe 5 and the drain pipe 2, so that the water inlet pipe 5 and the drain pipe 2 can be taken off and stored in the device compartment 1b when the wastewater detection and sampling device for nuclear power plants is not used, thereby preventing loss.

[0040] As a preferred, in an embodiment of the present application, the wastewater detection and sampling device for nuclear power plants further comprises a liquid level detection device for detecting the liquid level in the flow tank 1a. The controller of the wastewater detection and sampling device for nuclear power plants is in communication connection with the sampling water pump 4 and the liquid level detection device. The controller is used to control the working state of the sampling water pump 4 according to the detection value of the liquid level detection device. The control of the working state of the sampling water pump 4 by the controller includes the start-stop and flow control of the sampling water pump 4.

[0041] Further, in an embodiment, the drain valve 3 is an electrically controlled regulating valve. The drain valve 3 is in communication connection with the controller of the wastewater detection and sampling device for nuclear power plants. The controller can control the opening and closing and opening degree adjustment of the drain valve 3, so as to realize the control of the on-off and discharge flow of the drain pipe 2.

[0042] In order to facilitate sampling, in an embodiment of the present application, as shown in Figure 2As shown, the nuclear power plant wastewater detection sampling device further comprises a sampling support 9, the sampling support 9 comprises a bearing part 901 and a telescopic support leg 902, a plurality of telescopic support legs 902 are arranged below the bearing part 901 in a circumferential direction to drive the bearing part 901 to move up and down, the telescopic support leg 902 can be manually lifted or electrically lifted, when the telescopic support leg 902 is electrically lifted, it can be in communication connection with the controller, when the controller receives the sampling instruction of the user, it controls the telescopic support leg 902 to act, so that the bearing part 901 is lowered, and then the water inlet pipe 5 is extended below the liquid level of the wastewater storage container 6, when the sampling detection is completed, the controller controls the telescopic support leg 902 to extend, so that the bearing part 901 is raised, and then the water inlet pipe 5 is separated from the wastewater, so as to avoid the water inlet pipe 5 being in contact with the wastewater for a long time, and the upper surface of the bearing part 901 is the bearing surface of the bearing shell 1.

[0043] Further optimization of the above technical solution, please refer to Figure 3 , the bottom of the telescopic support leg 902 is provided with a roller 903, so that the sampling support 9 becomes a movable support, when sampling detection is needed, the sampling support 9 can be pushed to move the nuclear power plant wastewater detection sampling device to the vicinity of the wastewater storage container 6, so as to facilitate sampling, and after the sampling detection is completed, the nuclear power plant wastewater detection sampling device can be moved to other positions.

[0044] It can be predicted that due to the great difference in the position and size of the wastewater storage container 6, in order to enable the nuclear power plant wastewater detection sampling device to be placed above the wastewater storage container 6 to facilitate sampling, in another embodiment of the present application, as shown in Figure 4 , the two bearing parts 901 of the sampling support 9 are connected by a telescopic support rod 904, and the distance between the two bearing parts 901 is adjustable, so that the gap between the two bearing parts 901 can be adjusted according to the size and position of the wastewater storage container 6 to adapt to different wastewater storage containers 6.

[0045] It should be noted that Figures 2 to 4 , the relative position of the sampling support 9 and the nuclear power plant wastewater detection sampling device is only one embodiment of the present application, and the actual position of the nuclear power plant wastewater detection sampling device on the sampling support 9 is not limited to the middle position shown in the figure, the wastewater detection sampling device can be arranged at one end of the bearing part 901 of the sampling support 9, or fixedly suspended below the bearing part 901, as shown in Figure 5 , or suspended below the bearing part 901 through a telescopic slide rail, when sampling is needed, the nuclear power plant wastewater detection sampling device is moved above the wastewater storage container 6 through the extension and retraction of the telescopic slide rail.

[0046] Further optimization of the above technical solutions, in order to reduce the odor of wastewater emission, in an embodiment of the present application, the upper pipe 5 includes a hard pipe section and a hose section, one end of the hard pipe section is connected to the water inlet of the sampling water pump 4, the other end of the hard pipe section is connected to the hose section, the hard pipe section is used to pass through the sealing cover 7 of the wastewater storage container 6 and the hard pipe section is in sliding sealing cooperation with the sealing cover 7 of the wastewater storage container 6, so as to ensure that the wastewater storage container 6 is always in a sealed state, avoid the emission of wastewater vapor and odor, and ensure the health of personnel.

[0047] It should be noted that each embodiment in the present specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between embodiments can be referred to each other.

[0048] It should be understood that if "system", "device", "unit" and / or "module" are used in the present application, it is only a method for distinguishing different components, elements, parts, portions or assemblies of different levels. However, if other words can achieve the same purpose, the word can be replaced by other expressions.

[0049] As shown in the present application and claims, unless the context clearly indicates otherwise, "one", "a", "an" and / or "the" do not refer to the singular, but also include the plural. Generally, the terms "include" and "contain" only indicate the inclusion of the steps and elements explicitly identified, and these steps and elements do not constitute an exclusive list. The elements defined by the statement "include one" may also exist in other steps or elements in the process, method, product or device.

[0050] In the description of embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this paper only describes the association between the associated objects, which means that there may be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. In addition, in the description of embodiments of the present application, "multiple" means two or more than two.

[0051] If a flowchart is used in the present application, the flowchart is used to illustrate the operations performed by the system according to the embodiments of the present application. It should be understood that the preceding or subsequent operations do not necessarily be executed in sequence. On the contrary, each step can be processed in reverse order or simultaneously. At the same time, other operations can be added to these processes, or one or more steps can be removed from these processes.

[0052] It is also to be noted that, as used in this specification and claims, the terms "include," "includes," "including," "comprise," "comprises," or "comprising," or any variation thereof, will be understood to encompass the inclusion of the recited item or items, but not the exclusion of other items that are not expressly identified or included. In other words, by using these terms, a recitation of a list of items does not exclude other items that are not expressly listed.

[0053] The principles and implementation manners of the present application are described by using specific examples in the present application. The above examples are only used to help understand the core idea of the present application. It should be pointed out that, for those skilled in the art, without departing from the principles of the present application, the present application can be improved and modified in many ways. These improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A waste water detecting sampling device for nuclear power plants, characterized by, The utility model relates to a nuclear power station wastewater detection sampling device, including: A shell (1) is provided with a flow cell (1a) in the shell (1), the shell (1) is connected with a drain pipe (2), the drain pipe (2) is communicated with the flow cell (1a), the drain pipe (2) is provided with a drain valve (3), the drain pipe (2) is used to drain the wastewater in the flow cell (1a) back to a wastewater storage container (6); A sampling water pump (4), the water inlet of the sampling water pump (4) is connected with an upper water pipe (5), the upper water pipe (5) is used to extend below the liquid level of the wastewater storage container (6), the water outlet of the sampling water pump (4) is communicated with the flow cell (1a).

2. The nuclear power plant wastewater detection sampling device according to claim 1, characterized by, The shell (1) includes a shell body (101) and a cover plate (102), the flow cell (1a) is arranged in the shell body (101), and the cover plate (102) is arranged in the shell body (101) in an openable and closable manner.

3. The nuclear power plant wastewater detection sampling device according to claim 2, characterized by, A fixing mechanism for fixing a wastewater detector (8) is arranged above the flow cell (1a) in the shell body (101).

4. The device for detecting and sampling waste water of a nuclear power plant according to any one of claims 1 to 3, characterized in that, The bottom of the flow cell (1a) is arranged in an inclined manner, and the drain pipe (2) is communicated with the flow cell (1a) at the lowest point of the bottom of the flow cell (1a).

5. The device for detecting and sampling waste water of a nuclear power plant according to any one of claims 1 to 3, characterized in that, The shell (1) is provided with a device compartment (1b) isolated from the flow cell (1a), and the sampling water pump (4) is detachably arranged in the device compartment (1b).

6. The nuclear power plant wastewater detection sampling device according to claim 5, characterized by, The upper water pipe (5) is detachably connected to the water inlet of the sampling water pump (4), the drain pipe (2) is detachably connected to the shell (1), and the device compartment (1b) can accommodate the upper water pipe (5) and the drain pipe (2).

7. The device for detecting and sampling waste water of a nuclear power plant according to any one of claims 1 to 3, characterized in that, Further comprising a liquid level detection device for detecting the liquid level in the flow cell (1a), the controller of the nuclear power station wastewater detection sampling device is communicatively connected with the sampling water pump (4) and the liquid level detection device, and the controller is used to control the working state of the sampling water pump (4) according to the detection value of the liquid level detection device.

8. The device for detecting and sampling waste water of a nuclear power plant according to any one of claims 1 to 3, characterized in that, The drain valve (3) is an electrically controlled regulating valve, and the drain valve (3) is communicatively connected with the controller of the nuclear power station wastewater detection sampling device.

9. The device for detecting and sampling waste water of a nuclear power plant according to any one of claims 1 to 3, characterized in that, Further comprising a sampling support, the sampling support includes a bearing part and a plurality of telescopic supporting legs, the telescopic supporting legs are arranged below the bearing part in a circumferential direction, the telescopic supporting legs drive the bearing part to move up and down, the upper surface of the bearing part is a bearing surface for bearing the shell (1), and the bottom of the telescopic supporting leg is provided with a roller.

10. The nuclear power plant wastewater detection sampling device of claim 9, wherein, The upper water pipe (5) includes a hard pipe section and a soft pipe section, one end of the hard pipe section is connected to the water inlet of the sampling water pump (4), the other end of the hard pipe section is connected to the soft pipe section, the hard pipe section is used to penetrate the sealing cover (7) of the wastewater storage container (6), and the hard pipe section is in sliding sealing cooperation with the sealing cover (7) of the wastewater storage container (6).

Images