A fracturing fluid sampling device

Abstract

The utility model discloses a fracturing fluid sampling device. The fracturing fluid sampling device includes support frame and sampling assembly, is equipped with support rod on the support frame, and support rod is movable along vertical direction, and sampling assembly includes a plurality of support blocks, is equipped with a plurality of cross bars on the support block, and cross bar can rotate relative to support block, and a plurality of cross bars are arranged in the circumferential interval of support block, and the end of cross bar away from support block is detachably equipped with sampling bottle, is equipped with sampling tube group on sampling bottle, and sampling tube group has opening state and plugging state, and in opening state, the inner chamber of sampling bottle is communicated with outside environment through sampling tube group, and in plugging state, sampling tube group blocks the communication passage of the inner chamber of sampling bottle and outside environment. The utility model can sample the fracturing fluid of multiple positions and different depths on the circumferential side of tank body simultaneously, improves sampling efficiency, also makes detection data more objective, and has stronger practicality.

Description

Technical Field

[0001] This utility model relates to the field of petroleum engineering technology, and in particular to a fracturing fluid sampling device. Background Technology

[0002] Fracturing fluid, a key material in oil and gas development, plays a crucial role throughout the entire fracturing operation process. After fracturing fluid preparation, it undergoes a series of rigorous tests to ensure its performance, stability, and environmental friendliness. Furthermore, fracturing fluid is typically not used immediately after preparation but is stored in tanks. To guarantee its effectiveness, it is tested before use. In related technologies, to ensure the accuracy of testing, samples of fracturing fluid at different depths within the tank are usually taken. However, due to the large depth and volume of the storage tanks and the relatively small openings, current methods typically use syringe-like samplers. However, this method only allows sampling from one location at a time, requiring multiple repetitions and resulting in low sampling efficiency. Additionally, it only allows sampling of fracturing fluid located along the central axis of the tank, potentially leading to less objective data that does not accurately reflect the performance of the fracturing fluid. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a fracturing fluid sampling device that can simultaneously sample fracturing fluid located at multiple positions around the tank and at different depths, thereby improving sampling efficiency and making the test data more objective, and has strong practicality.

[0005] The fracturing fluid sampling device of this utility model embodiment includes:

[0006] A support frame, on which a support rod is provided, the support rod being movable in a vertical direction;

[0007] A sampling assembly includes multiple support blocks spaced apart along the length of a support rod. Each support block has multiple crossbars that are rotatable relative to it. The crossbars are circumferentially spaced around the support blocks. A sampling bottle is detachably mounted on the end of each crossbar furthest from the support block. The sampling bottle has a sampling tube assembly that has an open state and a closed state. In the open state, the inner cavity of the sampling bottle communicates with the external environment through the sampling tube assembly. In the closed state, the sampling tube assembly blocks the communication channel between the inner cavity of the sampling bottle and the external environment.

[0008] In some embodiments, the support frame is provided with a vertical rod that is movable in the vertical direction. The vertical rod is provided with a plurality of movable blocks that correspond one-to-one with the plurality of support blocks. The movable blocks are slidably sleeved on the support rod. The movable blocks are provided with a connecting rod that is connected to the crossbar. The connecting rod, the movable blocks, and the crossbar are rotatable relative to each other.

[0009] In some embodiments, the crossbar is provided with a connecting block, the connecting block is slidably provided with a guide rod, one end of the guide rod is provided with a retaining ring, a first spring is sleeved on the guide rod, the two ends of the first spring abut against the retaining ring and the connecting block respectively, the other end of the guide rod is provided with a mounting block, the mounting block is provided with a retaining ring, the lower end of the sampling bottle is fitted in the retaining ring, and the first spring provides a force to the sampling bottle toward the crossbar so that the upper end of the sampling bottle abuts against the end of the crossbar away from the support block.

[0010] In some embodiments, the end of the crossbar away from the support block is provided with a slot, the upper end of the sampling bottle is fitted into the slot, and the slot has a notch.

[0011] In some embodiments, the sampling tube assembly includes an inlet tube, a conduit, and a connecting tube. One end of the inlet tube is slidably inserted into the sampling bottle, and the other end of the inlet tube is slidably inserted into the conduit. The end of the conduit away from the inlet tube is slidably inserted into the connecting tube. One end of the connecting tube is sealed, and an elongated hole is provided on the peripheral wall of the connecting tube. In the sealed state, the peripheral wall of the conduit blocks the elongated hole. In the open state, the conduit and the connecting tube slide relative to each other, so that the peripheral wall of the conduit releases the blockage of the elongated hole.

[0012] In some embodiments, a support plate is provided on the peripheral wall of the conduit, and a groove is provided on the crossbar. The groove extends along the length of the crossbar, and a first slide rod is provided in the groove. A portion of the support plate is slidably sleeved on the first slide rod. A second spring is sleeved on the first slide rod. The two ends of the second spring abut against the groove wall of the support plate and the groove at the end away from the sampling bottle, respectively. The second spring applies a force to the conduit toward the inlet tube.

[0013] In some embodiments, the crossbar is provided with two through slots, which are located on the side of the slide groove away from the sampling bottle. The two through slots are arranged at intervals along the length of the crossbar. A movable plate is provided in each through slot, and the movable plates in the two through slots are connected by a connecting plate. The movable plate in the through slot closer to the sampling bottle is connected to the connecting tube. A second slide rod is provided in the through slot away from the sampling bottle, and a third spring is sleeved on the second slide rod. The two ends of the third spring abut against the movable plate in the through slot and the groove wall at the end of the through slot away from the sampling bottle, respectively. The third spring applies a force to the connecting tube toward the conduit.

[0014] In some embodiments, the support frame is provided with a connecting frame, which is movable in the vertical direction. The connecting frame is provided with a plurality of push plates corresponding one-to-one with the plurality of crossbars. The lower end of the push plate is provided with a wedge-shaped inclined surface facing the support rod. The push plate corresponds to the through groove on the crossbar away from the sampling bottle. When the sampling tube assembly is in the open state, the push plate moves through the through groove on the crossbar away from the sampling bottle. The wedge-shaped inclined surface of the push plate contacts the moving plate in the through groove to push the moving plate to slide and drive the connecting tube to slide relative to the conduit. When the sampling tube assembly is in the blocked state, the push plate exits the through groove, and the connecting tube is reset by the force of the third spring.

[0015] In some embodiments, the push plate has a double-layer structure, and the thickness of the interlayer in the push plate is greater than the width of the connecting rod.

[0016] In summary, the fracturing fluid sampling device of this utility model has a crossbar hinged to a support rod, which facilitates the lowering of the device into the tank storing fracturing fluid. The crossbar can then be horizontally positioned to sample the fracturing fluid around the tank. Furthermore, it can simultaneously sample fracturing fluid from multiple locations, thereby providing a more objective reflection of the fracturing fluid's performance and improving sampling efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the fracturing fluid sampling device according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the sampling component according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the first structure of the crossbar according to an embodiment of the present utility model.

[0020] Figure 4 This is a schematic diagram of the second structure of the crossbar in an embodiment of this utility model.

[0021] Figure label:

[0022] 100-Support frame, 101-Support rod, 102-Connecting frame, 103-Push plate, 200-Sampling assembly, 201-Support block, 202-Horizontal bar, 203-Sampling bottle, 204-Inlet pipe, 205-Conduit, 206-Connecting rod, 207-Moving block, 208-Vertical rod, 209-Mounting block, 210-Snap ring, 211-Guide rod, 212-Connecting block, 213-Retaining ring, 214-First spring, 215-Support plate, 216-Slide groove, 217-First slide rod, 218-Second spring, 219-Through groove, 220-Moving plate, 221-Connecting pipe, 222-Elongated hole, 223-Second slide rod, 224-Third spring. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] The fracturing fluid sampling device of this utility model is described below with reference to the accompanying drawings.

[0025] like Figures 1 to 4 As shown, the fracturing fluid sampling device of this utility model embodiment includes a support frame 100 and a sampling component 200.

[0026] The support frame 100 is roughly cross-shaped, with a support rod 101 at its center. The support rod 101 is movable in the vertical direction. During sampling, the support frame 100 is set up at the opening of the fracturing fluid tank, and the support rod 101 is inserted into the tank to take samples.

[0027] The sampling assembly 200 includes multiple support blocks 201, which are spaced apart along the length of the support rod 101. The support blocks 201 and the support rod 101 can be fixedly connected by welding. Multiple crossbars 202 are provided on the support blocks 201, and the crossbars 202 are hinged to the support blocks 201 so that the crossbars 202 can be flipped downwards. The multiple crossbars 202 are arranged circumferentially around the support blocks 201, and a sampling bottle 203 is detachably attached to the end of each crossbar 202 away from the support block 201.

[0028] The sampling bottle 203 is equipped with a sampling tube assembly, which has an open state and a closed state. During sampling, when the support rod 101 extends into the preset position in the tank, the sampling tube assembly is in the open state, and the inner cavity of the sampling bottle 203 is connected to the external environment (the inner cavity of the fracturing fluid tank) through the sampling tube assembly for sampling. When the support rod 101 moves, the sampling tube assembly is in the closed state, blocking the communication channel between the inner cavity of the sampling bottle 203 and the external environment. This prevents fracturing fluid from non-target areas inside the tank from entering the sampling bottle 203, ensuring the effectiveness of the sampling.

[0029] In some embodiments, such as Figure 1 and Figure 2 As shown, the support frame 100 is provided with a vertical rod 208, which is movable in the vertical direction. The vertical rod 208 is provided with multiple movable blocks 207 corresponding one-to-one with multiple support blocks 201, and the movable blocks 207 are slidably sleeved on the support rod 101. The movable blocks 207 are provided with connecting rods 206 connected to the crossbars 202, and the connecting rods 206 are hinged to the movable blocks 207 and the crossbars 202.

[0030] Understandably, when the sampling component 200 is moved into the tank, the crossbar 202 is in an inclined state, which reduces the overall volume of the device to facilitate the device passing through the tank opening. After the sampling component 200 enters the tank, the vertical bar 208 is moved downward, and the moving block 207 also moves downward simultaneously. Under the push of the connecting rod 206, the crossbar 202 is forced to rotate around its hinge point until the crossbar 202 is in a horizontal state. Then the sampling operation can begin. After the sampling is completed, the vertical bar 208 is moved upward, so that the crossbar 202 is in an inclined state again to facilitate its removal.

[0031] In some embodiments, such as Figures 1 to 4 As shown, a T-shaped connecting block 212 is provided on the lower side of the crossbar 202. Guide rods 211 are provided on both sides of the connecting block 212, and the guide rods 211 slidably pass through the connecting block 212. A retaining ring 213 is provided at the upper end of the guide rod 211, and a first spring 214 is sleeved on the guide rod 211. The two ends of the first spring 214 abut against the retaining ring 213 and the connecting block 212, respectively. A mounting block 209 is provided at the lower end of the guide rod 211, and a retaining ring 210 is provided on the mounting block 209. The lower end of the sampling bottle 203 is fitted into the retaining ring 210. The first spring 214 is always in a compressed state. The first spring 214 provides a force to the sampling bottle 203 toward the crossbar 202, so that the upper end of the sampling bottle 203 abuts against the end of the crossbar 202 away from the support block 201, thereby realizing the detachable connection between the sampling bottle 203 and the crossbar 202.

[0032] When removing the sampling bottle 203, an external force is applied to move the mounting block 209 downwards, causing the guide rod 211 to slide down. The first spring 214 is further compressed, increasing the distance between the retaining ring 210 and the crossbar 202. The upper end of the sampling bottle 203 disengages from the end of the crossbar 202, allowing the sampling bottle 203 to be removed from the retaining ring 210. Conversely, when installing the sampling bottle 203, an external force is applied to move the mounting block 209 downwards, installing the lower end of the sampling bottle 203 into the retaining ring 210. When the external force is removed, under the action of the first spring 214, the upper end of the sampling bottle 203 abuts against the crossbar 202, thus securing the sampling bottle 203.

[0033] Furthermore, such as Figure 3 As shown, the end of the crossbar 202 furthest from the support block 201 is provided with a slot, and the upper end of the sampling bottle 203 is fitted into the slot, thereby improving the limiting effect on the sampling bottle 203. In addition, the slot has a notch to facilitate the subsequent installation of the sampling tube assembly (liquid inlet tube 204).

[0034] In some embodiments, such as Figures 1 to 4 As shown, the sampling tube assembly includes an inlet tube 204, a conduit 205, and a connecting tube 221. One end of the inlet tube 204 is slidably inserted into the sampling bottle 203, and the other end of the inlet tube 204 is slidably inserted into the conduit 205. The end of the conduit 205 furthest from the inlet tube 204 is slidably inserted into the connecting tube 221. One end of the connecting tube 221 is sealed, and an elongated hole 222 is provided on the peripheral wall of the connecting tube 221.

[0035] Understandably, when the sampling assembly 200 is moved into the tank, the sampling tube assembly is in a blocked state. The end of the conduit 205 away from the inlet pipe 204 abuts against the blocking surface of the connecting pipe 221, and the peripheral wall of the conduit 205 blocks the elongated hole 222, thereby preventing liquid from entering the sampling bottle 203. After the sampling assembly 200 moves to the target sampling area, the sampling tube assembly is in an open state. The connecting pipe 221 moves away from the sampling bottle 203, and the conduit 205 slides relative to the connecting pipe 221. The end of the conduit 205 away from the inlet pipe 204 opens, and the peripheral wall of the conduit 205 releases the blockage of the elongated hole 222, allowing liquid to enter the conduit 205 through the elongated hole 222 and be transported to the sampling bottle 203 through the inlet pipe 204.

[0036] Optionally, such as Figure 3 and Figure 4As shown, a support plate 215 is provided on the peripheral wall of the conduit 205, and a groove 216 is provided on the crossbar 202, extending along the length of the crossbar 202. A first sliding rod 217 is provided in the groove 216, and part of the support plate 215 is slidably fitted onto the first sliding rod 217. A second spring 218 is fitted on the first sliding rod 217, and the two ends of the second spring 218 abut against the groove wall of the support plate 215 and the end of the groove 216 away from the sampling bottle 203, respectively. The second spring 218 is always in a compressed state, and the second spring 218 exerts a force on the conduit 205 toward the inlet pipe 204.

[0037] Insert the inlet tube 204 into the sampling bottle 203. After the sampling bottle 203 is placed in the retaining ring 210, rotate the sampling bottle 203 so that the inlet tube 204 faces the conduit 205. Insert the inlet tube 204 into the conduit 205. To make it easier for the inlet tube 204 to enter the conduit 205, the end of the inlet tube 204 is usually made of a rigid material. At this time, simply move the conduit 205 back and forth to insert the inlet tube 204 into the conduit 205. Under the action of the second spring 218, the inlet tube 204 can be stably fitted into the conduit 205.

[0038] Optionally, the crossbar 202 is provided with two through slots 219, which are located on the side of the slide groove 216 away from the sampling bottle 203. The two through slots 219 are arranged at intervals along the length of the crossbar 202. A movable plate 220 is provided in the through slot 219, and the movable plates 220 in the two through slots 219 are connected by a connecting plate. The movable plate 220 in the through slot 219 closer to the sampling bottle 203 is connected to the connecting pipe 221, and a second slide bar 223 is provided in the through slot 219 away from the sampling bottle 203. A third spring 224 is fitted on the second slide rod 223. The two ends of the third spring 224 abut against the moving plate 220 in the through groove 219 and the groove wall of the through groove 219 away from the sampling bottle 203, respectively. The third spring 224 is always in a compressed state. The third spring 224 gives the connecting tube 221 a force toward the conduit 205, so that the connecting tube 221 always has a tendency to move toward the conduit 205, thereby ensuring the sealing effect of the conduit 205.

[0039] During sampling, simply apply external force to move the connecting tube 221 away from the conduit 205, thus connecting the elongated hole 222 with the end of the conduit 205, allowing the fracturing fluid to smoothly enter the sampling bottle 203. After sampling, remove the external force, and under the action of the third spring 224, the connecting tube 221 returns to its original position, sealing the fluid inlet channel.

[0040] In some embodiments, such as Figures 1 to 4As shown, the support frame 100 is provided with a connecting frame 102, which is movable in the vertical direction. The connecting frame 102 is provided with a plurality of push plates 103 corresponding to a plurality of crossbars 202. The lower end of the push plate 103 is provided with a wedge-shaped inclined surface facing the support rod 101. The push plate 103 corresponds to the through groove 219 on the crossbar 202 away from the sampling bottle 203.

[0041] Understandably, during sampling, by lowering the push plate 103, the push plate 103 extends into the through groove 219 on the crossbar 202, away from the sampling bottle 203. The wedge-shaped inclined surface of the push plate 103 contacts the moving plate 220 within the through groove 219, pushing the moving plate 220 to slide and causing the connecting tube 221 to slide relative to the conduit 205, thus opening the sampling tube assembly. After sampling, the push plate 103 exits the through groove 219, and the connecting tube 221 resets under the force of the third spring 224, restoring the sampling tube assembly to its sealed state.

[0042] Furthermore, the push plate 103 has a double-layer structure, and the thickness of the interlayer inside the push plate 103 is greater than the width of the connecting rod 206, so as to avoid the connecting rod 206 interfering with the movement of the push plate 103.

[0043] In summary, the fracturing fluid sampling device of this utility model hinges the crossbar 202 to the support rod 101, which facilitates the lowering of the device into the tank storing fracturing fluid. By horizontally positioning the crossbar 202, fracturing fluid samples can be taken from the circumference of the tank. Furthermore, fracturing fluid samples can be taken from multiple locations simultaneously, thereby providing a more objective reflection of the fracturing fluid's performance and improving sampling efficiency.

[0044] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A fracturing fluid sampling device, characterized in that, include: A support frame, on which a support rod is provided, the support rod being movable in a vertical direction; A sampling assembly includes multiple support blocks spaced apart along the length of a support rod. Each support block has multiple crossbars that are rotatable relative to it. The crossbars are circumferentially spaced around the support blocks. A sampling bottle is detachably mounted on the end of each crossbar furthest from the support block. The sampling bottle has a sampling tube assembly that has an open state and a closed state. In the open state, the inner cavity of the sampling bottle communicates with the external environment through the sampling tube assembly. In the closed state, the sampling tube assembly blocks the communication channel between the inner cavity of the sampling bottle and the external environment.

2. The fracturing fluid sampling device according to claim 1, characterized in that, The support frame is provided with a vertical rod, which is movable in the vertical direction. The vertical rod is provided with a plurality of movable blocks corresponding one-to-one with the plurality of support blocks. The movable blocks are slidably sleeved on the support rod. The movable blocks are provided with a connecting rod connected to the crossbar. The connecting rod, the movable blocks, and the crossbar are rotatable relative to each other.

3. The fracturing fluid sampling device according to claim 1, characterized in that, The crossbar is provided with a connecting block, and a guide rod is slidably provided on the connecting block. One end of the guide rod is provided with a retaining ring, and a first spring is sleeved on the guide rod. The two ends of the first spring abut against the retaining ring and the connecting block, respectively. The other end of the guide rod is provided with a mounting block, and a retaining ring is provided on the mounting block. The lower end of the sampling bottle is fitted into the retaining ring. The first spring applies a force to the sampling bottle toward the crossbar, so that the upper end of the sampling bottle abuts against the end of the crossbar away from the support block.

4. The fracturing fluid sampling device according to claim 3, characterized in that, The crossbar has a slot at the end away from the support block, the upper end of the sampling bottle is fitted into the slot, and the slot has a notch.

5. The fracturing fluid sampling device according to claim 2, characterized in that, The sampling tube assembly includes an inlet tube, a conduit, and a connecting tube. One end of the inlet tube is slidably inserted into the sampling bottle, and the other end of the inlet tube is slidably inserted into the conduit. The end of the conduit furthest from the inlet tube is slidably inserted into the connecting tube. One end of the connecting tube is sealed, and an elongated hole is provided on the peripheral wall of the connecting tube. In the sealed state, the peripheral wall of the conduit blocks the elongated hole. In the open state, the conduit and the connecting tube slide relative to each other, so that the peripheral wall of the conduit releases the seal on the elongated hole.

6. The fracturing fluid sampling device according to claim 5, characterized in that, The peripheral wall of the conduit is provided with a support plate, and the crossbar is provided with a sliding groove. The sliding groove extends along the length of the crossbar, and a first sliding rod is provided in the sliding groove. Part of the support plate is slidably sleeved on the first sliding rod. A second spring is sleeved on the first sliding rod. The two ends of the second spring abut against the groove wall of the support plate and the end of the sliding groove away from the sampling bottle, respectively. The second spring gives the conduit a force toward the inlet tube.

7. The fracturing fluid sampling device according to claim 6, characterized in that, The crossbar has two through slots located on the side of the slide groove away from the sampling bottle. The two through slots are spaced apart along the length of the crossbar. A movable plate is provided in each through slot, and the movable plates in the two through slots are connected by a connecting plate. The movable plate in the through slot closer to the sampling bottle is connected to the connecting tube. A second slide rod is provided in the through slot away from the sampling bottle, and a third spring is sleeved on the second slide rod. The two ends of the third spring abut against the movable plate in the through slot and the groove wall at the end of the through slot away from the sampling bottle, respectively. The third spring exerts a force on the connecting tube toward the conduit.

8. The fracturing fluid sampling device according to claim 7, characterized in that, The support frame is equipped with a connecting frame that is movable in the vertical direction. The connecting frame is equipped with multiple push plates that correspond one-to-one with the multiple crossbars. The lower end of each push plate has a wedge-shaped inclined surface facing the support rod. The push plate corresponds to a through groove on the crossbar away from the sampling bottle. When the sampling tube assembly is in the open state, the push plate moves through the through groove on the crossbar away from the sampling bottle. The wedge-shaped inclined surface of the push plate contacts a moving plate in the through groove to push the moving plate to slide and drive the connecting tube to slide relative to the conduit. When the sampling tube assembly is in the blocked state, the push plate exits the through groove, and the connecting tube is reset by the force of the third spring.

9. The fracturing fluid sampling device according to claim 8, characterized in that, The push plate has a double-layer structure, and the thickness of the interlayer in the push plate is greater than the width of the connecting rod.

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