Sampling device of condenser heat exchange tube leakage online diagnosis equipment

Abstract

The invention discloses a sampling device of condenser heat exchange tube leakage online diagnosis equipment, and relates to the technical field of condenser detection. The device comprises a shell, a detector is installed on the surface of the shell, the interior of the shell is divided into an upper inner cavity and a lower inner cavity through a partition plate, a movable plate is slidably connected to the surface of the partition plate, and multiple sampling holes are formed in the bottom end of the shell; a sampling assembly is further connected to the surface of the partition plate, and the bottom end of the sampling assembly penetrates through the partition plate and is located in the sampling hole; the lower inner cavity is connected with a reset assembly which is connected to the surface of the middle lower end of the sampling assembly. By arranging the multiple sampling assemblies and the multiple sampling holes corresponding to the bottom end of the shell, condensation water in different areas of the condenser can be sampled at the same time or in sequence, all the sampling assemblies are triggered in sequence through movement of the downward pressing assembly, point-by-point sampling is achieved, limitation of traditional single-point sampling is avoided, it is ensured that the whole heat exchange tube area is covered with a diagnosis result, and the detection efficiency is improved. And the leakage positioning accuracy is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of condenser detection, and in particular relates to a sampling device of online diagnosis equipment for leakage of condenser heat exchange tubes. Background Art

[0002] As an important part of the steam turbine unit in a thermal power plant, the normal operation of the condenser's heat exchange tubes is crucial to the safety and economy of the entire unit.

[0003] Once a heat exchange tube leaks, the condensate quality will deteriorate, affecting the normal operation of the thermal system and may even cause serious accidents such as corrosion of turbine blades. Currently, the sampling device of the existing condenser heat exchange tube leakage online diagnosis equipment has many problems. For example, the sampling device has a complex structure and is inconvenient to operate, making it impossible to achieve accurate and rapid sampling of different areas of the condenser, resulting in the failure to detect the leak point in time.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a sampling device for online diagnosis of condenser heat exchange tube leakage, thereby solving the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] A sampling device for online diagnostic equipment for condenser heat exchange tube leakage, comprising: a shell, a detector installed on the surface of the shell, the interior of the shell being divided into an upper inner cavity and a lower inner cavity by a partition, a movable plate being slidably connected to the surface of the partition, and a plurality of sampling holes being opened at the bottom end of the shell; the upper inner cavity being connected to a down-pressure assembly, the surface of the partition being also connected to a sampling assembly, the bottom end of the sampling assembly passing through the partition and being located in the sampling hole; the lower inner cavity being connected to a reset assembly, the reset assembly being connected to the lower end surface of the sampling assembly, the sampling assembly being also connected to a connecting pipe, the connecting pipe passing through the shell and being connected to the detector, and an air suction pump being connected between the connecting pipe and the detector.

[0008] Precise positioning and sampling are achieved through the shell partition design (upper / lower inner cavity) and the coordination of the movable plate and the sampling hole. The downward pressure component drives the sampling, and the reset component ensures the reset. The sample is then transferred to the detector through the connecting pipe by the suction pump, which can complete the leakage diagnosis online. It has the advantages of compact structure, accurate sampling, efficient detection and no impact on equipment operation, and can provide a reliable basis for the diagnosis of heat exchange tube leakage.

[0009] Optionally, a plurality of slots are provided on the surface of the movable plate, and a reset slot is also provided on the left side of the surface of the movable plate. The lower end of the slot is provided with a corner, and the upper end is inclined. The left side wall of the movable plate is connected to a first spring, and the other end of the first spring is connected to the inner wall of the outer shell.

[0010] The lower end of the card slot on the surface of the movable plate is provided with a corner and the upper end is inclined, which can cooperate with the sampling component when the movable plate slides, and the component is guided into the card slot through the inclined surface. The corner structure can fix the position of the component, realize the precise alignment of the sampling hole and the sampling component, and improve the accuracy of sampling positioning. The left reset groove is matched with the first spring. When the external force is removed, the spring force can pull the movable plate to automatically reset along the reset groove direction without manual operation, ensuring that the movable plate quickly returns to the initial position after sampling, facilitating the next sampling cycle, and improving the convenience and continuity of the use of the device. The linkage design of the card slot, reset slot and spring enables the movable plate to be accurately positioned and automatically reset during the sliding process, reducing human intervention, enhancing the stability of the overall operation of the sampling device, and ensuring the reliability and efficiency of the online diagnosis process.

[0011] Optionally, the sampling component includes a protrusion that can contact the pressing component, the bottom end of the protrusion is connected to a connecting column, the bottom end of the connecting column is connected to a sampling tube, the upper end surface of the connecting column is connected to a limiting axis, and the limiting axis corresponds to the card slot and the reset slot.

[0012] The convex block contacts the pressing component. When the pressing component applies pressure, the convex block can effectively receive and transmit the pressure, driving the connecting column and the sampling tube to move downward, thereby performing the sampling operation, realizing the linkage between the sampling component and the pressing component, ensuring the smooth execution of the sampling action, the limit shaft corresponds to the reset groove, when the sampling is completed and the pressing component removes the pressure, under the action of the reset component, the moving plate is reset, the limit shaft slides along the reset groove, driving the sampling component to reset together, so that the sampling component returns to the initial position, ready for the next sampling, and ensuring the continuity of the sampling process.

[0013] Optionally, a sampling port is provided at the bottom end of the sampling tube, a connecting tube is connected to the surface of the connecting column, connecting channels are provided in both the sampling tube and the connecting column, and the connecting tube is sealed and connected to the connecting channel.

[0014] The sampling port at the bottom of the sampling tube facilitates sample collection. The connecting tube connected to the surface of the connecting column is sealed with the sampling tube and the connecting channel inside the connecting column to form a closed sample transmission path. This ensures that the collected samples will not leak or be contaminated during transmission to the detector, thereby ensuring the integrity and accuracy of the samples and improving the reliability of the online diagnosis results of condenser heat exchange tube leakage.

[0015] Optionally, the reset assembly includes a fixed through-post located on the surface of the lower inner cavity, the bottom end of the fixed through-post is connected to a fixed bottom ring, and the fixed bottom ring is connected to the surface of the lower inner cavity. The reset assembly also includes a fixed top ring connected to the top of the surface of the sampling tube, and a second spring is connected between the fixed top ring and the fixed bottom ring. The sampling tube is located in the lower inner cavity, and the bottom end of the sampling tube passes through the fixed through-post and is located in the sampling hole.

[0016] In the reset assembly, the fixed through column and the fixed bottom ring form a stable support structure to ensure stable movement of the sampling tube; the second spring connects the fixed top ring and the fixed bottom ring, and after sampling is completed, it pushes the sampling tube to automatically reset through the release of elastic potential energy and quickly restores its initial state; at the same time, the sampling tube passes through the fixed through column, so that it moves precisely in the axial direction during the reset process to avoid deviation, thereby ensuring the stability, repeatability and accuracy of the sampling operation.

[0017] Optionally, the downward pressure assembly includes a screw rod located in the upper inner cavity, and one end of the screw rod is rotatably connected to the inner wall of the outer shell, and the other end passes through the outer shell and is connected to the motor. A moving block is threadedly connected to the surface of the screw rod, and the bottom end of the moving block is connected to a roller through a connecting rod, and the roller can be against the protrusion.

[0018] Through the cooperation of the screw rod and the motor, the pressing component can accurately control the movement of the moving block along the screw rod, thereby driving the connecting rod and the roller to move up and down; the roller and the protrusion offset each other, and the pressing force can be effectively transmitted to the sampling component, thereby achieving smooth downward pressure on the sampling tube and completing the sampling action; this design not only ensures the accuracy of the downward pressure force and position, but also improves the stability and reliability of the downward pressure process through mechanical transmission, ensuring the efficient and orderly sampling operation.

[0019] Optionally, the connecting rod is rotatably connected to the moving block via a rotating shaft, the surface of the rotating shaft is connected to a first gear, the surface of the moving block is connected to a second gear, the first gear and the second gear are meshed and connected, the surface of the second gear is connected to a connecting shaft, and the other end of the connecting shaft is connected to a swivel.

[0020] The connecting rod and the moving block are rotatably connected through a rotating shaft. Combined with the meshing transmission of the first and second gears and the design of the connecting shaft and the rotating ring, the rotating ring can be manually rotated to drive the second gear to rotate through the connecting shaft, and then drive the first gear and the rotating shaft to rotate, so as to flexibly adjust the relative angle between the connecting rod and the moving block; this structure allows the roller to better fit the surface of the protrusion, ensuring uniform force when pressing down, and at the same time the pressing direction can be adjusted according to actual needs, thereby enhancing the applicability and operational flexibility of the pressing component and ensuring stable downward pressing and sampling of the sampling component.

[0021] Optionally, a through groove is provided on the rear end surface of the shell, and limiting grooves are also provided on the upper and lower sides of the through groove at the rear end of the shell. The connecting shaft passes through the through groove, and the swivel is located outside the shell. A plurality of equidistant threaded holes are provided on the surface of the swivel, and limiting columns corresponding to the limiting grooves are connected to the threaded holes.

[0022] The through slot and limit slot design at the rear end of the shell, combined with the connecting shaft passing through the through slot, makes the swivel external, which is convenient for the operator to adjust manually; the combination of the threaded hole on the surface of the swivel and the limit column, after adjusting the angle of the connecting rod, the limit column can be screwed into the corresponding threaded hole and inserted into the limit slot to fix the swivel, thereby locking the angle of the connecting rod to prevent angle deviation during the downward pressure process, ensure that the roller and the protrusion are stably abutted, ensure the accuracy and stability of the downward pressure action of the sampling component, and improve the working reliability of the device.

[0023] Optionally, a sliding groove is provided on the surface of the partition, and a sliding block corresponding to the sliding groove is connected to the bottom end of the movable plate.

[0024] The slide groove on the surface of the partition cooperates with the slider at the bottom of the movable plate, providing a precise sliding track for the movable plate. When adjusting the sampling position, the movable plate can only slide smoothly along the direction of the slide groove to avoid offset or shaking, thereby ensuring the precise alignment of the sampling hole and the sampling component. At the same time, this structural design enhances the stability of the movable plate during movement, reduces friction loss between components, extends the service life of the device, and ensures the reliability and efficiency of the online diagnostic sampling operation of the condenser heat exchange tube leakage.

[0025] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described below at the same time:

[0026] 1. By setting up multiple groups of sampling components, corresponding to the multiple sampling holes at the bottom of the shell, condensate in different areas of the condenser can be sampled simultaneously or sequentially. By moving the down-pressing component, each group of sampling components is triggered in sequence to achieve "point-by-point sampling", avoiding the limitations of traditional single-point sampling, ensuring that the diagnostic results cover the entire heat exchange tube area, and improving the accuracy of leak location;

[0027] 2. By setting the card slot and the limit shaft, the card slot on the surface of the movable plate is linked with the limit shaft of the sampling assembly. When the pressing assembly pushes a group of sampling assemblies downward, the limit shaft presses the movable plate to the left along the inclined section of the card slot, and then gets stuck at the corner of the card slot and is fixed, so that the sampling tube of this group extends out of the sampling hole. At the same time, the other groups of sampling assemblies remain in place under the action of the reset assembly to avoid interference, ensuring that only one group of sampling assemblies works at a time, preventing multiple groups from sampling at the same time and causing sample mixing, which affects the detection accuracy;

[0028] 3. By setting up a downward pressure component and a reset component, when the downward pressure component moves to the left, it pushes each group of sampling components downward to sample in turn. When the roller leaves the bump, the reset component (second spring) pushes the sampling tube upward to reset. No manual intervention is required. For example, after completing one group of sampling, the downward pressure component moves to the next group, and the previous group automatically resets, forming a "sampling-reset-sampling" cycle process, which improves efficiency several times compared to manual operation.

[0029] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described below are only some embodiments. A person skilled in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0031] Figure 1 It is a schematic diagram of the overall structure;

[0032] Figure 2 It is a schematic diagram of the overall structure from another perspective;

[0033] Figure 3 This is a schematic diagram of the internal structure of the rear end of the shell;

[0034] Figure 4 This is a schematic diagram of the structure of the sampling component when it is working;

[0035] Figure 5 Schematic diagram of the internal structure of the shell;

[0036] Figure 6 Schematic diagram of the structure after the roller is adjusted;

[0037] Figure 7 It is a schematic diagram of the sampling component structure;

[0038] Figure 8 for Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0039] Figure 9 for Figure 4 Schematic diagram of the enlarged structure at B in the middle;

[0040] Figure 10 Schematic diagram of the structure connecting the partition and the movable plate.

[0041] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0042] 1. Housing; 2. Detector; 3. Air pump; 4. Motor; 5. Connecting pipe; 6. Sampling hole; 7. Moving block; 71. Connecting rod; 72. Roller; 73. First gear; 74. Second gear; 8. Partition; 9. Moving plate; 91. Slot; 92. Reset slot; 93. First spring; 10. Screw; 11. Bump; 111. Sampling tube; 112. Limiting shaft; 113. Sampling port; 114. Connecting column; 12. Fixed through column; 121. Fixed bottom ring; 122. Second spring; 123. Fixed top ring; 13. Connecting shaft; 131. Swivel; 132. Threaded hole; 133. Limiting column; 14. Through slot; 15. Limiting slot; 16. Slide slot.

[0043] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0044] The present invention will now be described in further detail with reference to the accompanying drawings.

[0045] See also Figure 1-10 As shown, in this embodiment, a sampling device of an online diagnostic equipment for condenser heat exchange tube leakage is provided, including: a shell 1, a detector 2 is installed on the surface of the shell 1, the interior of the shell 1 is divided into an upper inner cavity and a lower inner cavity by a partition 8, a movable plate 9 is slidably connected to the surface of the partition 8, and a plurality of sampling holes 6 are opened at the bottom end of the shell 1; the upper inner cavity is connected to a down-pressing component, and the surface of the partition 8 is also connected to a sampling component, and the bottom end of the sampling component passes through the partition 8 and is located in the sampling hole 6; the lower inner cavity is connected to a reset component, and the reset component is connected to the lower end surface of the sampling component, and the sampling component is also connected to a connecting pipe 5, which passes through the shell 1 and is connected to the detector 2, and an air suction pump 3 is connected between the connecting pipe 5 and the detector 2.

[0046] The outer shell 1 serves as the carrier of the entire device and plays the role of protecting and supporting the internal structure. The detector 2 installed on the surface of the outer shell 1 is used to analyze and detect the collected samples to determine whether there is a leak in the condenser heat exchange tube. The interior of the outer shell 1 is divided into an upper inner cavity and a lower inner cavity by a partition 8, which provides installation space for different components so that each component can operate in an orderly manner. The movable plate 9 slidingly connected to the surface of the partition 8 can be moved under the action of subsequent components. The multiple sampling holes 6 opened at the bottom end of the outer shell 1 are used to communicate with the inside of the condenser to collect condensate samples at different positions. The downward pressure component connected to the upper inner cavity provides downward pressure for the sampling component to push the sampling component downward. When the downward pressure component is started, it can drive the sampling component to move downward, so that it can sample the condensate sample in the condenser heat exchange tube through the sampling hole 6. Carry out collection; when the sampling is completed, the pressing component stops working, and the reset component provides an upward thrust for the sampling component, so that the sampling component drives the movable plate 9 to move upward and return to the initial position for the next sampling operation. The setting of the reset component ensures that the sampling component can be recycled, thereby improving the working efficiency of the sampling device. The connecting pipe 5 connected to the sampling component passes through the outer shell 1 and is connected to the detector 2. The connecting pipe 5 transports the condensate sample collected by the sampling component to the detector 2. The suction pump 3 connected between the connecting pipe 5 and the detector 2 provides power for the transmission of the sample in the connecting pipe 5. The suction pump 3 generates suction to quickly and stably suck the sample collected by the sampling component into the connecting pipe 5 and transport it to the detector 2, ensuring that the sample can be detected in a timely and accurate manner, thereby realizing online diagnosis of the leakage of the condenser heat exchange tube.

[0047] In this embodiment, a plurality of slots 91 are provided on the surface of the movable plate 9, and a reset slot 92 is also provided on the left side of the surface of the movable plate 9. The lower end of the slot 91 is provided with a corner, and the upper end thereof is inclined. The left side wall of the movable plate 9 is connected to a first spring 93, and the other end of the first spring 93 is connected to the inner wall of the outer shell 1. The sampling component includes a protrusion 11 that can contact the downward pressure component, and the bottom end of the protrusion 11 is connected to a connecting column 114, and the bottom end of the connecting column 114 is connected to a sampling tube 111. The upper end surface of the connecting column 114 is connected to a limiting axis 112, and the limiting axis 112 corresponds to the slot 91 and the reset slot 92. A sampling port 113 is provided at the bottom end of the sampling tube 111, and a connecting pipe 5 is connected to the surface of the connecting column 114. Connecting channels are provided in the sampling tube 111 and the connecting column 114, and the connecting pipe 5 is sealed and connected to the connecting channel.

[0048] The sampling components can be provided with multiple groups according to needs (6 groups of sampling components are provided in this embodiment). The number of the card slots 91 and the reset components is the same as that of the sampling components. The reset slot 92 is also connected with the protrusion 11 and the connecting column 114, and the limiting shaft 112 on the surface of the connecting column 114 is located in the reset slot 92.

[0049] When the pressing assembly moves to the left, it moves out and presses against the protrusion 11 in the sampling assembly, so that the limiting shaft 112 moves downward along the slot 91. When the limiting shaft 112 passes the upper end of the slot 91, due to the tilt of the slot 91, the movable plate 9 is pressed to move to the left. At the same time, the movable plate 9 presses against the first spring 93 to compress it. After the limiting shaft 112 reaches the corner of the slot 91, the first spring 93 loses its restriction and resets, driving the movable plate 9 to move to the right. At this time, the limiting shaft 112 is stuck at the bottom end of the slot 91 to achieve temporary fixation. At the same time, the sampling assembly at this location moves downward and compresses the reset assembly at the lower end. The sampling tube 111 in the sampling assembly at this location extends from the sampling hole 6, and the condensate sample in the condenser heat exchange tube is sampled through the sampling port 113. Carry out collection. After the collection is completed, move the pressing assembly to the left again so that the pressing assembly rests against the protrusion 11 in the next sampling assembly, driving the limiting shaft 112 in the sampling assembly to move downward along the slot 91, and also moving the movable plate 9 to the left. At this time, the limiting shaft 112 in the sampling assembly just now loses the restriction of the slot 91, and at the same time, it is moved upward through its corresponding reset assembly to achieve reset. Through multiple groups of sampling assemblies, slots 91 and reset assemblies, accurate and rapid sampling of different areas of the condenser can be achieved. When the pressing assembly moves to the top of the protrusion 11 at the reset slot 92, the limiting shaft 112 in the reset slot 92 moves downward along the reset slot 92, causing the movable plate 9 to move to the left, thereby resetting all sampling assemblies.

[0050] The reset assembly includes a fixed column 12 located on the surface of the lower inner cavity, and the bottom end of the fixed column 12 is connected to a fixed bottom ring 121, and the fixed bottom ring 121 is connected to the surface of the lower inner cavity. The reset assembly also includes a fixed top ring 123 connected to the top of the surface of the sampling tube 111, and a second spring 122 is connected between the fixed top ring 123 and the fixed bottom ring 121. The sampling tube 111 is located in the lower inner cavity, and the bottom end of the sampling tube 111 passes through the fixed column 12 and is located in the sampling hole 6.

[0051] In the lower inner cavity, the bottom end of the fixed column 12 is fixed to the bottom of the shell 1 through the fixed bottom ring 121 to form a supporting structure. When the sampling tube 111 moves downward, the second spring 122 is compressed; after the pressure is removed, the second spring 122 rebounds and resets, driving the sampling tube 111 to reset upward.

[0052] The pressing assembly includes a screw rod 10 located in the upper inner cavity, and one end of the screw rod 10 is rotatably connected to the inner wall of the shell 1, and the other end passes through the shell 1 and is connected to the motor 4. The surface of the screw rod 10 is threadedly connected to a moving block 7, and the bottom end of the moving block 7 is connected to a roller 72 through a connecting rod 71. The roller 72 can be against the protrusion 11. The connecting rod 71 is rotatably connected to the moving block 7 through a rotating shaft. The surface of the rotating shaft is connected to a first gear 73, and the surface of the moving block 7 is connected to a second gear 74. The first gear 73 and the second gear 74 are connected. The gears 74 are meshed and connected, and a connecting shaft 13 is connected to the surface of the second gear 74. The other end of the connecting shaft 13 is connected to a swivel 131. A through groove 14 is provided on the rear end surface of the shell 1. Limiting grooves 15 are also provided on the upper and lower sides of the through groove 14 at the rear end of the shell 1. The connecting shaft 13 passes through the through groove 14, and the swivel 131 is located outside the shell 1. A plurality of equidistant threaded holes 132 are provided on the surface of the swivel 131, and a limiting column 133 corresponding to the limiting groove 15 is connected in the threaded hole 132.

[0053] The motor 4 drives the screw rod 10 to rotate, and the moving block 7 on the surface of the screw rod 10 moves left and right along the screw rod 10 through threaded engagement, driving the connecting rod 71 and the roller 72 to move synchronously. When the roller 72 gradually abuts against the protrusion 11, the protrusion 11 moves downward, driving the sampling assembly downward into the condenser. When the roller 72 leaves the top of the protrusion 11, the sampling assembly rises under the action of the reset assembly; when the roller 72 moves to the left to the protrusion 11 at the reset groove 92, all the sampling assemblies have completed sampling and reset at the same time, and by rotating the swivel 131, the swivel 131 drives the connecting shaft 13 to rotate, and the connecting shaft 13 drives the second gear 74 to rotate, and the second gear 74 drives the first gear 73 to rotate, and the first gear 73 drives the connecting rod 71 to rotate, so that the roller 7 2 rotates upward along the first gear 73 as the center of the circle, so that the roller 72 cannot collide with the protrusion 11. At this time, the screw rod 10 is rotated in the opposite direction to drive the roller 72 to move rightward to reset it, thereby preventing the roller 72 from accidentally touching the sampling component when moving rightward; when the moving block 7 moves, the connecting shaft 13 moves along the through groove 14, and the limiting post 133 on the surface of the rotating ring 131 moves along the limiting groove 15. The limiting post 133 and the limiting groove 15 can ensure the stability of the rotating ring 131 when moving. When the limiting post 133 rotates out of the limiting groove 15, the rotating ring 131 loses its limit and can drive the second gear 74 to rotate, thereby adjusting the position of the roller 72. After the position adjustment of the roller 72 is completed, the limiting post 133 is reinserted into the limiting groove 15 to fix the rotating ring 131 again.

[0054] A sliding groove 16 is provided on the surface of the partition 8 , and a slider corresponding to the sliding groove 16 is connected to the bottom end of the movable plate 9 , and the movable plate 9 slides left and right through the slider and the sliding groove 16 .

[0055] Working principle:

[0056] The motor 4 drives the screw rod 10 to rotate, and the threaded movable block 7 moves laterally along the screw rod 10, and drives the roller 72 to move synchronously through the connecting rod 71. When the roller 72 contacts the protrusion 11 of the sampling assembly, it presses the protrusion 11 downward, driving the connecting column 114 and the sampling tube 111 to move downward synchronously, and the limiting shaft 112 at the upper end of the sampling assembly moves downward with the protrusion 11, and slides along the inclined upper end of the card slot 91 on the surface of the movable plate 9. Due to the thrust of the inclined surface, the movable plate 9 moves to the left and compresses the first spring 93 on the left. When the limiting shaft 112 slides to the bottom end of the corner of the card slot 91, the first spring 93 resets and pushes the movable plate 9 to move right. The limiting shaft 112 is clamped and fixed. At this time, the bottom end of the sampling tube 111 extends from the sampling hole 6 of the shell 1 and enters the sampling position inside the condenser.

[0057] The sampling port 113 at the bottom of the sampling tube 111 contacts the condensate inside the condenser to start collecting samples. The connecting tube 5 is connected to the internal channel of the sampling tube 111. The suction pump 3 is started to generate suction, and the condensate sample is quickly transported through the connecting tube 5 to the detector 2 on the surface of the shell 1 to complete the component analysis to determine whether the heat exchange tube is leaking.

[0058] When the pressing assembly (moving block 7 drives roller 72) moves to the left to the convex block 11 of the next group of sampling assemblies, the previous group of convex blocks 11 loses the pressure of roller 72, and the limit shaft 112 is out of the locked state of the card slot 91. The reset assembly (second spring 122) in the lower inner cavity releases the compression potential energy during sampling, pushing the fixed top ring 123 and the sampling tube 111 to move upward, and the sampling tube 111 retracts into the shell 1, completing the single group reset. The pressing assembly presses each group of convex blocks 11 in turn. Each time a new group of sampling assemblies is driven downward, the previous group rises under the action of the reset assembly, realizing sequential sampling of different areas of the condenser. When the pressing assembly moves to the reset groove 92 When the protrusion 11 is moved, the limiting shaft 112 moves down along the reset groove 92, pushing the movable plate 9 to move left, and the limiting shafts 112 of all groups are disengaged from the card slot 91. All sampling components are reset synchronously under the action of the second spring 122, and the rotating ring 131 outside the shell 1 is rotated to drive the second gear 74 to rotate through the connecting shaft 13. The engaged first gear 73 drives the connecting rod 71 to rotate, so that the roller 72 is lifted upward (out of the plane of the protrusion 11) to prevent the roller 72 from accidentally touching the protrusion 11 when the screw rod 10 moves in the opposite direction. The limiting column 133 on the surface of the rotating ring 131 cooperates with the limiting groove 15 of the shell 1. After adjustment, it is inserted into the limiting groove 15 and fixed to ensure that the position of the roller 72 is stable.

[0059] The present invention is not limited to the above-described embodiments. Any structural changes made under the guidance of the present invention, which have the same or similar technical solutions as the present invention, should be understood to fall within the scope of protection of the present invention. The technologies, shapes, and structural parts not described in detail in the present invention are all well-known technologies.

Claims

1. A sampling device for online diagnosis of condenser heat exchange tube leakage, characterized in that: include: A housing (1), a detector (2) is mounted on the surface of the housing (1), the interior of the housing (1) is divided into an upper inner cavity and a lower inner cavity by a partition (8), a movable plate (9) is slidably connected to the surface of the partition (8), and a plurality of sampling holes (6) are opened at the bottom end of the housing (1); The upper inner cavity is connected to a downward pressure component, and the surface of the partition (8) is also connected to a sampling component, and the bottom end of the sampling component passes through the partition (8) and is located in the sampling hole (6); The lower inner cavity is connected to a reset component, which is connected to the lower end surface of the sampling component. The sampling component is also connected to a connecting pipe (5), which passes through the outer shell (1) and is connected to the detector (2). An air suction pump (3) is connected between the connecting pipe (5) and the detector (2).

2. The sampling device of the online diagnostic equipment for condenser heat exchange tube leakage according to claim 1, characterized in that: The surface of the movable plate (9) is provided with a plurality of slots (91), and a reset slot (92) is further provided on the left side of the surface of the movable plate (9). The lower end of the slot (91) is provided with a corner, and the upper end thereof is inclined. The left side wall of the movable plate (9) is connected to a first spring (93), and the other end of the first spring (93) is connected to the inner wall of the housing (1).

3. The sampling device of the online diagnostic equipment for condenser heat exchange tube leakage according to claim 2, characterized in that: The sampling assembly comprises a protrusion (11) capable of contacting the pressing assembly, the bottom end of the protrusion (11) is connected to a connecting column (114), the bottom end of the connecting column (114) is connected to a sampling tube (111), the upper end surface of the connecting column (114) is connected to a limiting axis (112), and the limiting axis (112) corresponds to the card slot (91) and the reset slot (92).

4. The sampling device of the online diagnostic equipment for condenser heat exchange tube leakage according to claim 3, characterized in that: A sampling port (113) is provided at the bottom end of the sampling tube (111), a connecting tube (5) is connected to the surface of the connecting column (114), and connecting channels are provided in both the sampling tube (111) and the connecting column (114), and the connecting tube (5) is sealedly connected to the connecting channel.

5. The sampling device of the online diagnostic equipment for condenser heat exchange tube leakage according to claim 4, characterized in that: The reset assembly includes a fixed through-column (12) located on the surface of the lower inner cavity, the bottom end of the fixed through-column (12) is connected to a fixed bottom ring (121), and the fixed bottom ring (121) is connected to the surface of the lower inner cavity. The reset assembly also includes a fixed top ring (123) connected to the top end of the surface of the sampling tube (111), and a second spring (122) is connected between the fixed top ring (123) and the fixed bottom ring (121). The sampling tube (111) is located in the lower inner cavity, and the bottom end of the sampling tube (111) passes through the fixed through-column (12) and is located in the sampling hole (6).

6. The sampling device of the online diagnostic equipment for condenser heat exchange tube leakage according to claim 1, characterized in that: The pressing assembly includes a screw rod (10) located in the upper inner cavity, and one end of the screw rod (10) is rotatably connected to the inner wall of the shell (1), and the other end passes through the shell (1) and is connected to the motor (4). The surface of the screw rod (10) is threadedly connected to a moving block (7), and the bottom end of the moving block (7) is connected to a roller (72) through a connecting rod (71), and the roller (72) can be abutted against the protrusion (11).

7. The sampling device of the online diagnostic equipment for condenser heat exchange tube leakage according to claim 6, characterized in that: The connecting rod (71) is rotatably connected to the moving block (7) via a rotating shaft. The surface of the rotating shaft is connected to a first gear (73). The surface of the moving block (7) is connected to a second gear (74). The first gear (73) and the second gear (74) are meshed and connected. The surface of the second gear (74) is connected to a connecting shaft (13). The other end of the connecting shaft (13) is connected to a rotating ring (131).

8. The sampling device of the online diagnostic equipment for condenser heat exchange tube leakage according to claim 7, characterized in that: A through slot (14) is provided on the rear end surface of the housing (1), and limiting slots (15) are further provided on the rear end of the housing (1) at upper and lower sides of the through slot (14). The connecting shaft (13) passes through the through slot (14), and the rotating ring (131) is located outside the housing (1). A plurality of threaded holes (132) are provided on the surface of the rotating ring (131) at equal intervals, and limiting columns (133) corresponding to the limiting slots (15) are connected in the threaded holes (132).

9. The sampling device of the online diagnostic equipment for condenser heat exchange tube leakage according to claim 1, characterized in that: A sliding groove (16) is provided on the surface of the partition (8), and a sliding block corresponding to the sliding groove (16) is connected to the bottom end of the movable plate (9).

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