A water pool sampling device

Abstract

The embodiment of the present application provides a water pool sampling device, which relates to the field of spent fuel treatment technology. The device can realize automatic and rapid sampling of pool water and pool wall scale of the water pool, and improve the efficiency and accuracy of sampling of pool water and pool wall scale. The water pool sampling device includes: a base bracket, a mobile sampling rack and a sampling device, wherein the base bracket has a accommodating space and is provided with a lifting component; the mobile sampling rack is connected to the lifting component, and the lifting component can drive the mobile sampling rack to move; the sampling device includes a storage component, a power component and a sampling component, the sampling component is fixed on the mobile sampling rack, and is used to collect samples, the storage component is connected to the sampling component, and the power component is connected to the storage component. Under the action of the power component, the sample collected by the sampling component can be transferred and stored in the storage component. The water pool sampling device can be used for automatic sampling of pool water and pool wall scale of a spent fuel storage pool.

Description

Technical Field

[0001] The embodiments of the present application relate to, but are not limited to, the field of spent fuel treatment technology, and in particular to a water pool sampling device. Background Art

[0002] Spent fuel, also known as irradiated nuclear fuel, is nuclear fuel that has been exposed to radiation and used, usually produced by nuclear reactors in nuclear power plants. After being removed from the reactor, the spent fuel is still radioactive and releases a large amount of decay heat. It is usually properly stored first, and then the spent fuel is subsequently operated and processed after the radioactivity and residual heat drop to a certain level. At present, there are two ways to store spent fuel: wet and dry. The wet way to store spent fuel is to store the spent fuel in a pool. After the spent fuel is stored in the spent fuel storage pool, there will be a variety of radioactive nuclides in the pool, and a large amount of rust will be produced on the pool wall. Before decommissioning the pool, a source survey of the spent fuel storage pool is required. Among them, sampling the pool water and pool wall rust is the most important part of the source survey, and the accuracy of the sampling is the key factor in determining the subsequent decommissioning steps.

[0003] In the prior art, the pool water and pool wall scale of the spent fuel storage pool are often sampled by some simple tools, and different tools are used for pool water sampling and pool wall scale sampling. For example, pool water sampling often uses manual extraction of water from different depths in the pool, but due to the difficulty of pool water extraction, the sampling accuracy is insufficient, which in turn affects the pool water sampling result; pool wall scale sampling generally uses a long rod tool to wipe the pool wall scale, and a part of the pool wall scale scraped off and adhered to the long rod tool is used as a sample, but due to the insufficient depth of wiping sampling, only a small part of the sample can be scraped from the surface of the pool wall scale, and the wiped sample is washed by the pool water, which in turn affects the sampling result of the pool wall scale. At the same time, the two sampling tasks of sampling the pool water and the pool wall scale are implemented independently, which will cause the staff to work in the radiation site for a long time and receive a large radiation dose, which is not conducive to the health of the staff. Therefore, there is a need for a device that can realize automatic and rapid sampling of the pool water and pool wall scale of the spent fuel storage pool. Summary of the invention

[0004] The embodiment of the present application provides a pool sampling device, which can realize automatic and rapid sampling of pool water and pool wall rust and scale, thereby improving the efficiency and accuracy of sampling of pool water and pool wall rust and scale.

[0005] The pool sampling equipment provided in the embodiment of the present application includes: a base support, a mobile sampling rack and a sampling device, wherein the base support has a storage space and is provided with a lifting component; the mobile sampling rack is connected to the lifting component, and the lifting component can be used to move the mobile sampling rack toward the storage space and be accommodated in the storage space, or to move the mobile sampling rack away from the storage space; the sampling device includes a storage component, a power component and a sampling component, the sampling component is fixed on the mobile sampling rack and is used to collect samples, the storage component is connected to the sampling component, and the power component is connected to the storage component, and under the action of the power component, the sample collected by the sampling component can be transferred and stored in the storage component.

[0006] In the embodiment of the present application, since a lifting component is provided on the base support, and the mobile sampling rack is connected to the lifting component, after the pool sampling device is moved to the pool, the mobile sampling rack can be placed in the pool by the lifting component, and the mobile sampling rack can be placed in a position of any depth in the pool water by controlling the lifting component; at the same time, a sampling component is provided on the mobile sampling rack, and the pool water and pool wall rust and scale can be quickly sampled, and a storage component is connected to the sampling component, and a power component is connected to the storage component, and the sample collected by the sampling component can be transferred and stored in the storage component through the power component, thereby reducing the process of the collected sample being washed by the pool water. In this way, automatic and rapid sampling and sample storage of pool water and pool wall rust and scale at any depth in the pool can be realized, and the efficiency and accuracy of sampling of pool water and pool wall rust and scale are improved.

[0007] In one possible implementation of the present application, the sampling component includes a first driving member, a sampling member and a fixed seat, a fixed seat through hole is provided on the fixed seat, the sampling member is arranged on the mobile sampling rack through the fixed seat, the first driving member is arranged on one side of the fixed seat, and the output shaft of the first driving member passes through the fixed seat through hole, the sampling member is arranged on the other side of the fixed seat and is connected to the output shaft, and the first driving member is used to drive the sampling member to move.

[0008] In one possible implementation of the present application, the sampling component also includes a protective member, which is a cylindrical structure with an opening, and is arranged between the sampling member and the fixed seat, and the side wall of the protective member surrounds the outside of the sampling member, the opening direction of the protective member is consistent with the direction of one end of the sampling member that contacts the sample to be collected, and a connecting head is provided on the protective member, and the sampling component is connected to the storage member through the connecting head.

[0009] In a possible implementation of the present application, the sampling member is connected to the output shaft via a connecting shaft, and a first elastic member is provided on the connecting shaft. When sampling is performed, the sampling member abuts against the sample to be collected under the action of the first elastic member.

[0010] In one possible implementation of the present application, a positioning component is also provided on the mobile sampling rack, and the positioning component includes a second driving member, a guide rod and a positioning plate. The second driving member is fixed on the mobile sampling rack, and the guide rod is slidably arranged on the mobile sampling rack, and the axial direction of the guide rod is consistent with the axial direction of the second driving member. The positioning plate is arranged at one end of the guide rod and is connected to the second driving member. Driven by the second driving member, the positioning plate moves along the axial direction of the guide rod until the mobile sampling rack is fixed between the side walls of the water pool.

[0011] In a possible implementation of the present application, a plurality of rolling wheels are provided on a side of the positioning plate away from the second driving member.

[0012] In one possible implementation of the present application, the lifting component includes a winch and a hoisting disk, both of which are arranged on a base bracket, the winch is connected to the hoisting disk, and the hoisting disk is connected to the mobile sampling rack through a connecting piece. Driven by the winch, the hoisting disk rotates to extend the connecting piece, or to wind the connecting piece around the hoisting disk.

[0013] In a possible implementation of the present application, the lifting component further includes a speed reduction mechanism, and the winch and the hoisting disc are connected via the speed reduction mechanism.

[0014] In a possible implementation of the present application, a second elastic member is provided on the mobile sampling rack, and the mobile sampling rack is connected to the connecting member via the second elastic member.

[0015] In a possible implementation of the present application, a locking member is provided on the base bracket, and a locking hole corresponding to the locking member is provided on the mobile sampling rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a water pool sampling device provided in an embodiment of the present application;

[0017] Figure 2 A schematic diagram of the structure of the base bracket provided in the embodiment of the present application;

[0018] Figure 3 A schematic diagram of the structure of a storage device provided in an embodiment of the present application;

[0019] Figure 4 A schematic diagram of the main structure of the mobile sampling rack provided in an embodiment of the present application;

[0020] Figure 5 A schematic diagram of the top view of the mobile sampling rack provided in an embodiment of the present application;

[0021] Figure 6 A schematic diagram of the structure of the sampling component provided in the embodiment of the present application;

[0022] Figure 7 A schematic diagram of the cross-sectional structure of a sampling component provided in an embodiment of the present application;

[0023] Figure 8 Provided in the embodiments of this application Figure 7 A partial enlarged schematic diagram of part A;

[0024] Fig. 9 This is a schematic diagram of the working of the water pool sampling equipment provided in an embodiment of the present application.

[0025] Description of reference numerals:

[0026] 1-base bracket; 11-lifting component; 111-capstan; 112-winding disc; 113-transmission shaft; 114-first bearing seat; 115-speed reduction mechanism; 116-connecting piece; 12-pipeline assembly; 121-connecting pipe; 13-castor; 14-locking piece; 15-air inlet; 16-cable connector; 2-mobile sampling rack; 21-positioning component; 211-second driving piece; 212-guide rod; 213-positioning plate; 214-fixing piece; 215-linear bearing; 216-rolling wheel; 22-second elastic piece; 23-quick connector; 24-foot cup; 25 -locking hole; 3-sampling device; 31-storage part; 311-housing; 312-drain valve; 313-cover; 314-cover inlet; 315-cover outlet; 316-flexible joint; 317-filter; 32-power part; 33-sampling part; 331-first driving part; 3311-output shaft; 332-sampling part; 333-fixed seat; 3331-flange; 334-protective part; 335-fixed bracket; 336-connector; 337-connecting shaft; 3371-coupling; 3372-second bearing seat; 338-first elastic part; 4-pool wall. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0028] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0029] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0030] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0031] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0032] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0033] Spent fuel storage pools are sites for storing spent fuel, damaged fuel, and for underwater operations such as fuel inspection, repair, and transportation. After the spent fuel is stored in the spent fuel storage pool, a variety of radionuclides will be present in the pool, and a large amount of rust will be produced on the pool wall. Before the spent fuel storage pool expires and is decommissioned, a source survey of the spent fuel storage pool is required. Sampling the pool water and pool wall rust is the most important part of the source survey, and the accuracy of the sampling is the key factor in determining the subsequent decommissioning steps.

[0034] On this basis, the embodiment of the present application provides a water pool sampling device. To facilitate the description of the water pool sampling device provided in the embodiment of the present application, the water pool sampling device provided in the embodiment of the present application is described below using a spent fuel storage pool as an example. It should be noted that the water pool sampling device provided in the embodiment of the present application is not limited to the sampling of a spent fuel storage pool, but can be applied to the sampling of any water pool.

[0035] Reference Figure 1 and Figure 2 , Figure 1 The water pool sampling device provided in the embodiment of the present application is shown. Figure 2 The base support provided by the embodiment of the present application is shown. The water pool sampling device comprises: a base support 1, a mobile sampling rack 2 and a sampling device 3, wherein the base support 1 can be configured as a frame structure with a storage space, the storage space is located inside the frame structure, and a lifting component 11 for adjusting the position of the mobile sampling rack 2 is provided on the base support 1. The lifting component 11 can be arranged at the upper end of the storage space of the base support 1 and connected to the mobile sampling rack 2. By making the lifting component 11 move, the mobile sampling rack 2 located in the storage space can be moved to the outside of the storage space, and can also be moved to the outside of the storage space. The mobile sampling rack 2 is moved from the outside of the accommodation space to the inside of the accommodation space; the sampling device 3 includes a storage component 31, a power component 32 and a sampling component. The sampling component is fixed on the mobile sampling rack 2. The pool water in the spent fuel storage pool and the rust on the pool wall can be collected through the sampling component. The storage component 31 is connected to the sampling component, and the power component 32 is connected to the storage component 31. Through the force provided by the power component 32, the sample collected by the sampling component can be transferred to the storage component 31 and stored in the storage component 31. The power component 32 can use a diaphragm pump.

[0036] In this embodiment, since a lifting component 11 is provided on the base support 1, and the mobile sampling rack 2 is connected to the lifting component 11, after the pool sampling device is moved to the pool, the mobile sampling rack 2 can be placed in the pool through the lifting component 11, and the mobile sampling rack 2 can be placed in a position of any depth in the pool water by controlling the lifting component 11; at the same time, a sampling component is provided on the mobile sampling rack 2, which can quickly sample the pool water and the rust and scale on the pool wall, and a storage component 31 is connected to the sampling component, and a power component 32 is connected to the storage component 31, and the sample collected by the sampling component can be transferred and stored in the storage component 31 through the power component 32, thereby reducing the process of the collected sample being washed by the pool water. In this way, automatic and rapid sampling and sample storage of pool water and pool wall rust and scale at any depth in the pool can be realized, and the efficiency and accuracy of sampling of pool water and pool wall rust and scale are improved.

[0037] For example, refer to Figure 2 , Figure 2A schematic diagram of the structure of the base support provided in the embodiment of the present application. The lifting component 11 arranged on the base support 1 includes a winch 111 and two winch discs 112, and the two winch discs 112 are fixedly sleeved on the same transmission shaft 113, and the winch 111 is connected to one end of the transmission shaft 113, wherein the transmission shaft 113 can be arranged on the base support 1 through a first bearing seat 114; the winch 111 can be a hand-cranked winch with a handle, or an electric winch, that is, a motor is connected to the winch 111, and the winch 111 is driven to rotate by the motor; a connecting piece can be arranged on the winch disc 112, one end of the connecting piece is fixed on the winch disc 112, and the other end is connected to the mobile sampling rack 2, and the connecting piece can be a steel wire rope. In this way, the user can rotate the hand winch to drive the winch disk 112 to rotate, so that the connecting piece extends and unfolds along the tangential direction of the winch disk 112, thereby moving the mobile sampling rack 2 from the storage space of the base bracket 1 to the outside of the storage space; the user can also rotate the hand winch to make the connecting piece wind up on the winch disk 112, thereby moving the mobile sampling rack 2 from a position away from the storage space to the storage space.

[0038] In addition, if Figure 2 As shown, a speed reduction mechanism 115 can also be provided between the capstan 111 and the hoisting disc 112, that is, the capstan 111 is connected to the transmission shaft 113 through the speed reduction mechanism 115. The speed reduction mechanism 115 can be a planetary speed reducer, or a worm gear speed reducer, or a speed reducer of other structural forms, which is not limited in the embodiment of the present application. In this way, since the speed reduction mechanism 115 is provided between the capstan 111 and the hoisting disc 112, the user can rotate the capstan 111 with less force, thereby driving the mobile sampling rack 2 to be raised and lowered.

[0039] like Figure 2 As shown, a plurality of pipeline assemblies 12 may be provided on the base support 1, and each pipeline assembly 12 includes a connecting pipe 121, and the connecting pipe 121 may be used to conduct gas or liquid. For example, the storage component 31 and the power component 32 are connected by a connecting pipe 121. The pipeline assembly 12 may adopt an air drum or a water drum whose connecting pipe 121 is retractable. The connecting pipe 121, which is used to connect the storage component 31, the power component 32 and the sampling component, may not be provided on the base support 1, but may be stored separately. When it is needed, the required connecting pipe 121 can be taken out. The embodiment of the present application does not limit the structural form of the pipeline assembly 12 and the setting position of the connecting pipe 121.

[0040] In this embodiment, since the pipe assembly 12 including the connecting pipe 121 is provided on the base support 1, it is convenient for the user to connect the storage component 31, the power component 32 and the sampling component.

[0041] In one possible implementation, Figure 2 As shown, a caster 13 can be respectively provided under the four corners of the base bracket 1. By providing the casters 13, the movement of the base bracket 1 can be facilitated. A locking member 14 can also be provided on the base bracket 1, and correspondingly, a locking hole corresponding to the locking member 14 is provided on the mobile sampling rack 2. When the mobile sampling rack 2 is located in the accommodating space of the base bracket 1, the mobile sampling rack 2 can be fixed to the base bracket 1 by the locking member 14, so as to facilitate the stability of the pool sampling equipment during transportation, so that there will be no collision between the mobile sampling rack 2 and the base bracket 1, wherein the locking member 14 can be a dividing pin. An air inlet 15 and a cable connector 16 can also be provided on the base bracket 1, one end of the air inlet 15 can be connected to a compressed air source, and the other end can be connected to a sampling component; one end of the cable connector 16 can be connected to a power supply, and the other end can be connected to a power member 32. Furthermore, both the storage component 31 and the power component 32 can be arranged on the base bracket 1. In this way, when sampling the water pool, the storage component 31 and the power component 32 will never enter the pool water. As the base bracket 1 is located above the water pool, after collecting the sample, the user can obtain the sample from the storage component 31 in time.

[0042] Reference Figure 3 , Figure 3 The storage element 31 is shown. The storage element 31 includes a housing 311, one end of which is provided with a drain valve 312, through which dirt in the storage element 31 can be discharged from the housing 311, and the other end of the housing 311 is connected to a cover 313, the housing 311 and the cover 313 can be threadedly connected, and the cover 313 is provided with a cover inlet 314 and a cover outlet 315, through which the storage element 31 can be connected to the sampling component, and through which the storage element 31 can be connected to the power element 32, and a flexible joint 316 can be provided on the cover outlet 315, and the use of the flexible joint 316 is conducive to the rapid connection of the storage element 31 and the power element 32. The storage element 31 also includes a filter 317, which is provided between the cover 313 and the housing 311, and the filter 317 can filter the sample entering the storage element 31, and the filtered sample is stored in the housing 311. The filter 317 can be made of a stainless steel precision filter, and the filtering accuracy of the stainless steel precision filter can reach 40 microns. After filtering the sample, after completing the sampling, it is only necessary to disassemble the shell 311 of the storage unit 31 and take out the sample in the shell 311.

[0043] In another possible implementation, referring to Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of the main structure of the mobile sampling rack provided in an embodiment of the present application. Figure 5A schematic diagram of a top view of a mobile sampling rack provided in an embodiment of the present application. A positioning component 21 is provided on the mobile sampling rack 2, and the positioning component 21 includes a second driving member 211, a guide rod 212, and a positioning plate 213, wherein the second driving member 211 is fixed on the mobile sampling rack 2, the guide rod 212 is provided on the mobile sampling rack 2 through a fixing member 214, and the axial direction of the guide rod 212 is consistent with the axial direction of the second driving member 211, the positioning plate 213 is provided at one end of the guide rod 212, and the second driving member 211 is connected to the positioning plate 213, and the positioning plate 213 is located outside the mobile sampling machine 2, and driven by the second driving member 211, the positioning plate 213 can move in a direction away from the mobile sampling rack 2 along the axial direction of the guide rod 212, or move from a position away from the mobile sampling rack 2 to a position close to the mobile sampling rack 2.

[0044] The mobile sampling rack 2 is also provided with a second elastic member 22 and a plurality of quick connectors 23, wherein the second elastic member 22 is provided on the outside of the mobile sampling rack 2, and the mobile sampling rack 2 can be connected to the connecting member of the lifting component 11 through the second elastic member 22, and the second elastic member 22 can be a tension spring.

[0045] Exemplarily, the second driving member 211 can be a cylinder, and the two ends of the cylinder body of the cylinder are hinged to fix the cylinder on the mobile sampling rack 2, the piston rod of the cylinder is connected to the positioning plate 213, and the air pipe joint of the cylinder is connected to the quick connector 23 through a connecting pipe. When using the water pool sampling device, the compressed air source is connected to the cylinder through the quick connector 23; four guide rods 212 can be set around the cylinder, each guide rod 212 is inserted on the fixing member 214 through a linear bearing 215, and the guide rod 212 can be inserted from one end of the mobile sampling rack 2. The linear bearing 215 is used to guide the guide rod 212, which can improve the smoothness of the extension and contraction of the piston rod of the cylinder. A plurality of rolling wheels 216 can also be set on the side of the positioning plate 213 away from the second driving member 211. For example, four universal bull's eye wheels as rolling wheels 216 can be set on the positioning plate 213, and each universal bull's eye wheel is set at a position close to the middle of the side of the positioning plate 213. Accordingly, a plurality of foot cups 24 are arranged at the other end of the mobile sampling rack 2 . For example, four foot cups 24 may be arranged on the mobile sampling rack 2 , and each foot cup 24 is located at the middle position of one side edge of the mobile sampling rack 2 .

[0046] In another possible implementation, the sampling component 33 in the sampling device 3 is also disposed on the mobile sampling rack 2, and is disposed on an end of the mobile sampling rack 2 away from the positioning plate 213. Figure 6 and Figure 7 , Figure 6 A schematic diagram of the structure of the sampling component provided in the embodiment of the present application, Figure 7A schematic diagram of the cross-sectional structure of the sampling component provided in the embodiment of the present application. The sampling component 33 includes a first driving member 331, a sampling member 332 and a fixed seat 333, wherein the fixed seat 333 can be set as a box-shaped structure with one end open, and the edge of the opening has a flange 3331, and the fixed seat 333 can be fixed on the mobile sampling rack 2 through the flange 3331; the fixed seat 333 is provided with a fixed seat through hole 3332, the first driving member 331 is arranged on the outside of the box-shaped structure of the fixed seat 333, and the output shaft 3311 of the first driving member 331 passes through the fixed seat through hole 3332, and the sampling member 332 is located inside the box-shaped structure of the fixed seat 333 and connected to the output shaft 3311 of the first driving member 331. When the water pool sampling device is used to sample the rust on the pool wall, the position of the mobile sampling frame 2 is adjusted so that the sampling member 332 of the sampling component 33 is in contact with the rust on the pool wall. When the first driving member 331 is actuated, the sampling member 332 can be driven to move relative to the rust on the pool wall, thereby scraping off a portion of the rust on the pool wall to obtain a sample of the rust on the pool wall.

[0047] For example, the sampling member 332 can be configured as a scraper with three blades, and the three blades are evenly distributed along the circumferential direction; the first driving member 331 can be an air motor, and the scraper is fixedly arranged on the output shaft of the air motor. When the air motor rotates, it can drive the scraper to rotate, so as to scrape off a part of the pool wall rust. In this embodiment, due to the provision of the sampling member 332 and the first driving member 331, the sampling member 332 can quickly move relative to the pool wall rust under the drive of the first driving member 331, so as to scrape off a part of the pool wall rust, and then quickly obtain the required pool wall rust sample.

[0048] like Figure 6 and Figure 7 As shown, the sampling component 33 also includes a protective member 334. The protective member 334 is a cylindrical structure with an opening. The protective member 334 is fixed to the fixing seat 333 by a fixing bracket 335. The protective member 334 is located between the fixing seat 333 and the sampling member 332. The side wall of the protective member 334 surrounds the outer side of the sampling member 332. The opening direction of the protective member 334 is consistent with the direction of one end of the sampling member 332 in contact with the sample to be collected. A part of the sampling member 332 exceeds the open end face of the protective member 334. A connector 336 is also provided on the side wall of the protective member 334. The sampling component 33 can be connected to the storage member 31 through the connector 336. The connector 336 can adopt a pagoda connector.

[0049] In this embodiment, since a protective member 334 is provided on the outer side of the sampling member 332, when the sampling member 332 moves relative to the sample to be collected and scrapes off a portion of the sample to be collected, the scraped sample can be concentrated in the protective member 334 instead of being dispersed in the pool water; at the same time, since a connector 336 is provided on the protective member 334, the sample in the protective member 334 can be extracted into the storage member 31 through the connector 336, which can improve the accuracy and efficiency of obtaining samples.

[0050] In addition, refer to Figure 8 , Figure 8 Provided in the embodiments of this application Figure 7 A partial enlarged schematic diagram of part A in the middle. The sampling member 332 in the sampling component 33 and the output shaft 3311 of the first driving member 331 can be connected by a connecting shaft 337, that is, the output shaft 3311 and the connecting shaft 337 can be connected by a coupling 3371, the sampling member 332 is arranged at one end of the connecting shaft 337, and the sampling member 332 can move along the axial direction of the connecting shaft 337, and the connecting shaft 337 passes through the second bearing seat 3372 and is arranged on the fixed bracket 335; a first elastic member 338 is arranged on the connecting shaft 337, and the first elastic member 338 is arranged between the sampling member 332 and the second bearing seat 3372, and the first elastic member 338 can be a spring. When sampling, under the action of the first elastic member 338, the sampling member 332 can always abut against the sample to be collected, that is, in the process of the sampling member 332 moving relative to the sample to be collected, the sampling member 332 can always keep abutting against the sample to be collected.

[0051] In this embodiment, a first elastic member 338 is provided on the connecting shaft 337, and the first elastic member 338 is pressed against the sampling member 332. Thus, when the pool sampling device is collecting the sample to be collected, the sampling member 332 can be kept in close contact with the sample to be collected, so that a portion of the sample to be collected can be quickly scraped off. Moreover, under the pressing action of the first elastic member 338, the sampling member 332 can scrape off the deeper portion of the sample to be collected, rather than just scraping off the surface portion of the sample to be collected.

[0052] Reference Fig. 9 , Fig. 9 The process of sampling the pool water and pool wall scale in the spent fuel storage pool using the pool sampling device provided in the embodiment of the present application is as follows:

[0053] First, the cylinder serving as the second driving component 211 is connected to a compressed air source through a connecting tube 121, the pneumatic motor serving as the first driving component 331 is connected to a compressed air source through another connecting tube 121, the pagoda connector serving as a connector 336 in the sampling component 33 is connected to the cover inlet 314 of the storage component 31 through another connecting tube 121, and then the power component 32 is connected to the storage component 31 through the connecting tube 121 (the connection relationship between each connecting tube 121 and other components is not shown in the figure).

[0054] Next, the locking member 14 on the base support 1 is opened, and the water pool sampling device is moved above the spent fuel storage pool.

[0055] Next, the winch 111 is controlled to rotate so that the connecting member 116 extends from the hoisting plate 112 and drives the mobile sampling rack 2 to descend to a position at a required depth in the spent fuel storage pool.

[0056] Then, the compressed air source is controlled to make the cylinder work, and the cylinder drives the positioning plate 213 to approach the pool wall 4 of the pool. During this process, a rolling wheel 216 arranged on the positioning plate 213 first contacts the pool wall 4. As the cylinder piston rod continues to extend, the rolling wheel 216 is continuously adjusted until the foot cup 24 on the other side of the mobile sampling rack 2 fits with the pool wall 4 on the other side, thereby fixing the mobile sampling rack 2 between the pool walls 4 on both sides; and in the process of the mobile sampling rack 2 fitting with the pool wall, the mobile sampling rack 2 will deviate to the pool wall 4 on one side relative to the base bracket 1. At this time, the second elastic member 22 can be retracted to enable the pool sampling equipment to automatically adapt to the tension caused by the position change between the mobile sampling rack 2 and the base bracket 1, so that the base bracket 1 can remain motionless above the pool.

[0057] Finally, the compressed air source is controlled to operate the pneumatic motor, thereby driving the scraper to rotate and scrape off a portion of the rust on the pool wall. The power member 32 is then operated to transfer the scraped-off sample of the pool wall rust to the storage member 31, thereby completing the sampling of the pool wall rust.

[0058] In addition, when sampling the pool water, there is no need to start the pneumatic motor or operate the scraper. Instead, the pool water near the sampling component 33 can be pumped into the storage component 31 through the power component 32 .

[0059] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A water pool sampling device, characterized in that: include: A base support having a receiving space and provided with a lifting component; A mobile sampling rack is connected to the lifting component, and the lifting component is used to move the mobile sampling rack in a direction close to the accommodating space and accommodate it in the accommodating space, or to move the mobile sampling rack in a direction away from the accommodating space; a positioning component is also provided on the mobile sampling rack, and the positioning component includes a second driving member, a guide rod and a positioning plate, the second driving member is fixed on the mobile sampling rack, the guide rod is slidably arranged on the mobile sampling rack, and the axial direction of the guide rod is consistent with the axial direction of the second driving member, the positioning plate is arranged at one end of the guide rod and is connected to the second driving member, and driven by the second driving member, the positioning plate moves along the axial direction of the guide rod until the mobile sampling rack is fixed between the side walls of the pool; The sampling device comprises a storage component, a power component and a sampling component. The sampling component is fixed on the mobile sampling frame and is used to collect samples. The storage component is connected to the sampling component, and the power component is connected to the storage component. Under the action of the power component, the sample collected by the sampling component is transferred and stored in the storage component.

2. The pool sampling device according to claim 1, characterized in that: The sampling component includes a first driving member, a sampling member and a fixed seat, the fixed seat is provided with a fixed seat through hole, the sampling member is arranged on the mobile sampling rack through the fixed seat, the first driving member is arranged on one side of the fixed seat, and the output shaft of the first driving member passes through the fixed seat through hole, the sampling member is arranged on the other side of the fixed seat and connected to the output shaft, and the first driving member is used to drive the sampling member to move.

3. The pool sampling device according to claim 2, characterized in that: The sampling component also includes a protective member, which is a cylindrical structure with an opening. The protective member is arranged between the sampling member and the fixing seat, and the side wall of the protective member surrounds the outside of the sampling member. The opening direction of the protective member is consistent with the direction of one end of the sampling member that contacts the sample to be collected. A connector is arranged on the protective member, and the sampling component is connected to the storage member through the connector.

4. The pool sampling device according to claim 2 or 3, characterized in that: The sampling member is connected to the output shaft via a connecting shaft, and a first elastic member is arranged on the connecting shaft. When sampling is performed, under the action of the first elastic member, the sampling member abuts against the sample to be collected.

5. The pool sampling device according to claim 1, characterized in that: A plurality of rolling wheels are arranged on a side of the positioning plate away from the second driving member.

6. The pool sampling device according to claim 1, characterized in that: The lifting component includes a winch and a hoisting disk, both of which are arranged on the base bracket, the winch is connected to the hoisting disk, and the hoisting disk is connected to the mobile sampling rack through a connecting piece. Driven by the winch, the hoisting disk rotates to extend the connecting piece, or to wind the connecting piece around the hoisting disk.

7. The pool sampling device according to claim 6, characterized in that: The lifting component further comprises a speed reduction mechanism, and the winch and the hoisting disc are connected via the speed reduction mechanism.

8. The pool sampling device according to claim 6, characterized in that: The mobile sampling rack is provided with a second elastic member, and the mobile sampling rack is connected to the connecting member via the second elastic member.

9. The pool sampling device according to claim 1, characterized in that: A locking piece is arranged on the base bracket, and a locking hole corresponding to the locking piece is arranged on the mobile sampling rack.

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