Unpowered precise sampler capable of sampling at any height

Abstract

An unpowered precise sampler capable of sampling at any height comprises a storage tank, a transmission rod is installed on the top of the storage tank through a supporting frame, pulleys are installed at the two ends of the transmission rod, a first steel wire rope is wound around the first pulleys, the first steel wire rope extends into the storage tank, and the bottom of the first steel wire rope is connected with a telescopic guide frame; the top of the telescopic sampling pipe is connected with a sampling inlet, the telescopic sampling pipe extends to the bottom of the storage tank along the telescopic guide frame and is connected with the metering cylinder after the tail end extends out of the storage tank, the metering cylinder is transversely fixed outside the storage tank, and a sampling outlet is formed in the bottom of the metering cylinder; the guide rope is used for fixing the telescopic guide frame; a lifting winch is arranged at the lower position outside the storage tank and corresponds to a second pulley, the second pulley is connected with the lifting winch through a second steel wire rope, the second steel wire rope is driven to move up and down through rotation of the lifting winch, so that the second pulley rotates, a sampling inlet height mark is installed on the second steel wire rope, and work is reliable and flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of samplers, in particular to a precise sampler without power and capable of sampling at any height. Background Art

[0002] At present, sampling of outdoor storage tanks in the prior art is mainly divided into two types: manual sampling and automatic sampling.

[0003] Among them, for manual sampling, it is necessary to climb to the top of the tank to sample with a sampler. The sampling speed is relatively slow, and the labor intensity is relatively high when multiple samplings are required; the sampling environment is dirty, and there is a risk that the sampling cylinder may fall into the tank. The accuracy of sampling depends on the technical level of the sampling personnel; in extreme weather environments such as strong winds and rains, sampling at the top of the tank is somewhat dangerous, and the accuracy of sampling will also be affected.

[0004] Among them, the automatic sampler does not require manual sampling at the top of the tank, but the cost is relatively high and there are limitations in use. Especially when retrofitting the bottom sampling of an old tank area, it is necessary to consider newly installed electrical equipment, automatic control instruments, cables, etc., which increases the later maintenance cost, and electrical equipment, instruments, etc. may not operate normally in the outdoor low-temperature environment.

[0005] The disadvantages of these two sampling methods are relatively obvious, and it is impossible to achieve low labor intensity, safe sampling, accurate sampling, and low investment at the same time. Content of the Utility Model

[0006] The applicant of the present utility model aims at the above-mentioned disadvantages in the existing production technology, and provides a precise sampler without power and capable of sampling at any height, so as to achieve bottom sampling of the tank, ensure safe sampling, accurate sampling, and environmental hygiene, and is applicable to the sampling of various storage tanks.

[0007] The technical solution adopted by the present utility model is as follows:

[0008] A precision sampler that is power-free and can sample at any height, including a storage tank. A top cover is provided on the top surface of the storage tank. A transmission rod is installed on the top cover through a support frame. One end of the transmission rod is installed with a pulley one, and the other end of the transmission rod is installed with a pulley two. A steel wire rope one is wound around the pulley one. The steel wire rope one extends into the storage tank and a telescopic guide frame is connected to the bottom of the steel wire rope one. A counterweight is installed on the top of the telescopic guide frame. A telescopic sampling tube that matches the shape of the telescopic guide frame is installed on the telescopic guide frame. The top of the telescopic sampling tube is connected to a sampling inlet. The telescopic sampling tube extends along the telescopic guide frame to the bottom of the storage tank and is connected to a metering cylinder after extending out of the storage tank at the end. The metering cylinder is horizontally fixed outside the storage tank, and a sampling outlet is provided at the bottom of the metering cylinder. It also includes a guide rope. The two ends of the guide rope are fixed to the top and bottom of the storage tank, and the guide rope is used to fix the telescopic guide frame. An elevating winch is provided at a position below the storage tank outside. The elevating winch corresponds to the pulley two. The pulley two is connected to the elevating winch through a steel wire rope two. By rotating the elevating winch, the steel wire rope two moves up and down, so that the pulley two rotates. A sampling inlet height mark is installed on the steel wire rope two.

[0009] As a further improvement of the above technical solution:

[0010] A plurality of fixing rings are arranged at the same vertical position from top to bottom on the telescopic guide frame, and the guide rope passes through each fixing ring.

[0011] The inner diameter of the fixing ring is larger than the outer diameter of the guide rope, and the fixing ring adopts a rotary structure.

[0012] The telescopic guide frame adopts a split structure and is made by hinging the heads and tails of multiple rods.

[0013] The telescopic guide frame is in a zigzag structure in the folded state and in a straight rod structure in the stretched state.

[0014] A compressed air inlet and an exhaust port are provided at the upper part of the metering cylinder for purging and emptying the medium in the system.

[0015] The compressed air inlet is replaced with a nitrogen inlet.

[0016] The end of the metering cylinder is connected to a return pipeline, and the return pipeline extends into the storage tank.

[0017] Scales are provided on the steel wire rope two.

[0018] The beneficial effects of the present utility model are as follows:

[0019] The utility model has a compact and reasonable structure and is convenient to operate. Through the newly designed non-powered sampler, bottom sampling of the tank can be conveniently achieved, without the need for sampling personnel to climb to the top of the tank and open the sampling port, reducing the labor intensity of sampling personnel and avoiding the danger of climbing the tank in bad weather. At the same time, there will be no phenomenon of more oil stains near the sampling point, and the medium in the tank will not be polluted due to opening the sampling port during windy or rainy weather. In addition, the utility model can achieve accurate sampling at any height inside the tank, and the sampling height can be observed outside the tank to ensure successful sampling.

[0020] After sampling, the utility model can ensure that there is no residual medium in the sampling system, ensuring the accuracy of the next sampling.

[0021] The non-powered design of the utility model makes its application range wider, and at the same time, the cost is relatively low, which is suitable for various tank farms, especially for the overall renovation and upgrading of samplers in old tank farms. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the utility model.

[0023] Figure 2 is Figure 1 a partial enlarged view of part A in

[0024] Figure 3 is Figure 1 a partial enlarged view of part B in

[0025] Figure 4 is Figure 1 a partial enlarged view of part C in

[0026] Wherein: 1, storage tank; 2, telescopic sampling pipe; 3, sampling inlet; 4, telescopic guide frame; 5, guide rope; 6, counterweight; 7, wire rope one; 8, pulley one; 9, transmission rod; 10, pulley two; 11, wire rope two; 12, sampling inlet height mark; 13, lifting winch; 14, compressed air inlet; 15, sampling outlet; 16, measuring cylinder; 17, return pipeline to tank; 18, exhaust port. Detailed Embodiment

[0027] The following combines the drawings to illustrate the detailed embodiment of the utility model.

[0028] Such as Figures 1-4As shown in the figure, the precision sampler of this embodiment is power-free and can sample at any height, including a storage tank 1. The top surface of the storage tank 1 is provided with a top cover. A transmission rod 9 is installed on the top cover through a support frame. One end of the transmission rod 9 is installed with a pulley 8, and the other end of the transmission rod 9 is installed with a pulley 10. A wire rope 7 is wound around the pulley 8. The wire rope 7 extends into the storage tank 1 and a telescopic guide frame 4 is connected to the bottom of the wire rope 7. A counterweight 6 is installed at the top of the telescopic guide frame 4. A telescopic sampling tube 2 matching the shape of the telescopic guide frame 4 is installed on the telescopic guide frame 4. The top of the telescopic sampling tube 2 is connected to a sampling inlet 3. The telescopic sampling tube 2 extends along the telescopic guide frame 4 to the bottom of the storage tank 1 and extends out of the storage tank 1 at the end and is connected to a measuring cylinder 16. The measuring cylinder 16 is horizontally fixed outside the storage tank 1. A sampling outlet 15 is provided at the bottom of the measuring cylinder 16; it also includes a guide rope 5. Both ends of the guide rope 5 are fixed to the top and bottom of the storage tank 1. The guide rope 5 is used to fix the telescopic guide frame 4; a lifting winch 13 is arranged at a lower position outside the storage tank 1. The lifting winch 13 corresponds to the pulley 10. The pulley 10 is connected to the lifting winch 13 through a wire rope 11. By rotating the lifting winch 13, the wire rope 11 moves up and down, so that the pulley 10 rotates. A sampling inlet height mark 12 is installed on the wire rope 11.

[0029] The telescopic guide frame 4 is provided with a plurality of fixing rings at the same vertical position from top to bottom. The guide rope 5 passes through each fixing ring.

[0030] The diameter of the fixing ring opening is larger than the outer diameter of the guide rope 5. The fixing ring adopts a rotary structure.

[0031] The telescopic guide frame 4 adopts a split structure and is made by hinging the heads and tails of multiple rods.

[0032] The telescopic guide frame 4 is in a zigzag structure in the folded state and in a straight rod structure in the stretched state.

[0033] The upper part of the measuring cylinder 16 is provided with a compressed air inlet 14 and an exhaust port 18 for purging and emptying the medium in the system.

[0034] The compressed air inlet 14 is replaced with a nitrogen inlet.

[0035] The end of the measuring cylinder 16 is connected to a return tank pipeline 17, and the return tank pipeline 17 extends into the storage tank 1.

[0036] The wire rope 11 is provided with scales.

[0037] The specific structure and function of the precision sampler of the present utility model that is power-free and can sample at any height are as follows:

[0038] It mainly includes a telescopic sampling tube 2. The top of the telescopic sampling tube 2 is connected to a sampling inlet 3. The bottom end of the telescopic sampling tube 2 is connected to a measuring cylinder 16 outside the storage tank 1. The telescopic sampling tube 2 is fixed by a telescopic guide frame 4. The telescopic guide frame 4 is fixed by a guide rope 5 that is fixed from the tank top to the tank bottom. A counterweight 6 is connected below the top of the telescopic guide frame 4. A first steel wire rope 7 is connected above the top of the telescopic guide frame 4. The first steel wire rope 7 is connected to a first pulley 8. By rotating the first pulley 8, the first steel wire rope 7 is driven, thereby moving the position of the sampling inlet 3 up and down. The first pulley 8 and the second pulley 10 are both independent systems and are linked by a transmission rod 9 to achieve synchronous rotation. The second pulley 10 is connected to a lifting winch 13 via a second steel wire rope 11. By rotating the lifting winch 13, the second steel wire rope 11 is driven, thereby rotating the second pulley 10. A sampling inlet height mark 12 is fixed on the second steel wire rope 11. The height of the sampling inlet 3 inside the storage tank 1 can be known through the relative height of the sampling inlet height mark 12 on the storage tank 1. The measuring cylinder 16 is connected to the storage tank 1 and is used for the inflow of the medium (liquid) inside the tank. The measuring cylinder 16 is connected to a compressed air inlet 14 and an exhaust port 18 and is used for purging and emptying the medium in the system. The measuring cylinder 16 is connected to a sampling outlet 15 and is used for discharging the sampled medium (liquid). The end of the measuring cylinder 16 is connected to a return pipeline 17 and is used for discharging the residual medium in the measuring cylinder 16 back into the storage tank 1.

[0039] The sampling inlet 3 is connected to the telescopic sampling tube 2. The telescopic sampling tube 2 is fixed on the telescopic guide frame 4. The telescopic sampling tube 2 and the telescopic guide frame 4 can move up and down through the guide rope 5. A first steel wire rope 7 is connected above the top of the telescopic guide frame 4 and is used for the upward movement of the telescopic guide frame 4. A counterweight 6 is connected below the top of the telescopic guide frame 4, which helps the telescopic guide frame 4 to descend. One end of the guide rope 5 is connected to the bottom plate of the storage tank 1 and the other end is connected to the top plate of the storage tank 1.

[0040] The sampling inlet 3 has a special structure. When the sampling inlet 3 enters below the liquid level of the storage tank 1, no medium will flow in until the sampling outlet 15 or the exhaust port 18 is opened, and then the medium will flow into the sampling inlet 3.

[0041] The sampling inlet height mark 12 can display the height of the sampling inlet 3 inside the storage tank 1. At the same time, the second steel wire rope 11 is provided with scales, which can be compared with the sampling inlet height mark 12 to ensure accurate sampling.

[0042] The capacity of the measuring cylinder 16 is determined according to the height of the storage tank 1. The compressed air inlet 14 and the exhaust port 18 can perform forward purging, reverse purging and exhausting on the measuring cylinder 16 to ensure the accuracy of the sampled sample.

[0043] The compressed air inlet 14 described in the present utility model can also be a nitrogen inlet.

[0044] If the transmission rod 9 is not used, the steel wire rope one 7 and the steel wire rope two 11 can be combined into one steel wire rope, directly connecting the pulley one 8 and the pulley two 10 and connecting other components, and the function of accurately sampling at any height can also be realized in the open storage tank 1.

[0045] During actual use, the medium in the storage tank 1 is liquid. When sampling is required, first, the lifting winch 13 is controlled to rotate, thereby driving the up and down movement of the steel wire rope two 11. The position of the sampling inlet 3 is determined according to the sampling inlet height mark 12. Due to the movement of the steel wire rope two 11, under the linkage action of the pulley two 10, the transmission rod 9, and the pulley one 8, the steel wire rope one 7 is driven to move up and down. The up and down movement of the steel wire rope one 7 drives the change of the position of the sampling inlet 3. At the same time, the telescopic guide frame 4 and the telescopic sampling tube 2 move telescopically or stretch together. When the sampling inlet 3 reaches the predetermined position, the operation of the lifting winch 13 is stopped, the valve of the inlet of the measuring cylinder 16 and the valve of the exhaust port 18 are opened, and the sampling inlet 3 starts to work. The liquid in the storage tank 1 enters through the sampling inlet 3, then enters the telescopic sampling tube 2, and reaches the measuring cylinder 16 along the telescopic sampling tube 2. After observing the sample injection through the sight glass on the measuring cylinder 16, the exhaust port 18 is closed, and then the sampling outlet 15 is opened to output the sampled liquid. After sampling, the sampling outlet 15 is closed, the sampling inlet 3 is lifted to the highest point, the valve of the inlet of the measuring cylinder 16 is closed, the compressed air inlet 14 is opened, the return tank pipeline 17 is opened, and the medium in the measuring cylinder 16 and the relevant pipelines is purged and emptied, and then the above valves are closed to complete the operation. The overall operation is convenient, the working reliability is good, and the precision is high.

[0046] The above description is an explanation of the present utility model, not a limitation of the utility model. The scope defined by the present utility model can be seen in the claims. Any form of modification can be made within the protection scope of the present utility model.

Claims

1. A precise sampler that is power-free and can sample at any height, characterized in that: It includes a storage tank (1), the top surface of the storage tank (1) is provided with a top cover, a transmission rod (9) is installed on the top cover through a support frame, one end of the transmission rod (9) is installed with a first pulley (8), the other end of the transmission rod (9) is installed with a second pulley (10), a first steel wire rope (7) is wound around the first pulley (8), the first steel wire rope (7) extends into the interior of the storage tank (1) and a telescopic guide frame (4) is connected to the bottom of the first steel wire rope (7), a counterweight block (6) is installed at the top of the telescopic guide frame (4), a telescopic sampling tube (2) matching the shape of the telescopic guide frame (4) is installed on the telescopic guide frame (4), the top of the telescopic sampling tube (2) is connected to a sampling inlet (3), the telescopic sampling tube (2) extends along the telescopic guide frame (4) to the bottom of the storage tank (1), and after extending out of the storage tank (1) at the end, it is connected to a measuring cylinder (16), the measuring cylinder (16) is horizontally fixed outside the storage tank (1), and a sampling outlet (15) is arranged at the bottom of the measuring cylinder (16); It also includes a guide rope (5), both ends of the guide rope (5) are fixed to the top and bottom of the storage tank (1), and the guide rope (5) is used to fix the telescopic guide frame (4); A lifting winch (13) is arranged at a lower position outside the storage tank (1), the lifting winch (13) corresponds to the second pulley (10), the second pulley (10) is connected to the lifting winch (13) through a second steel wire rope (11), the rotation of the lifting winch (13) drives the second steel wire rope (11) to move up and down, so as to make the second pulley (10) rotate, and a sampling inlet height mark (12) is installed on the second steel wire rope (11).

2. The precise sampler without power and capable of sampling at any height according to claim 1, characterized in that: The telescopic guide frame (4) is provided with a plurality of fixing rings at the same vertical position from top to bottom, and the guide rope (5) passes through each fixing ring.

3. The precision sampler without power and capable of sampling at any height according to claim 2, characterized in that: The diameter of the fixing ring opening is larger than the outer diameter of the guide rope (5), and the fixing ring adopts a rotary structure.

4. The precise sampler without power and capable of sampling at any height according to claim 1, wherein: The telescopic guide frame (4) adopts a split structure and is made by hinging the heads and tails of multiple rods.

5. The precise sampler without power and capable of sampling at any height according to claim 1, characterized in that: The telescopic guide frame (4) is in a zigzag structure in the folded state and in a straight rod structure in the stretched state.

6. The precision sampler without power and capable of sampling at any height according to claim 1, characterized in that: The upper part of the measuring cylinder (16) is provided with a compressed air inlet (14) and an exhaust port (18) for purging and emptying the medium in the system.

7. The precision sampler according to claim 6, which is power-free and can sample at any height, is characterized in that: The compressed air inlet (14) is replaced with a nitrogen inlet.

8. The precision sampler according to claim 1, which is power-free and can sample at any height, is characterized in that: The end of the measuring cylinder (16) is connected to a return tank pipeline (17), and the return tank pipeline (17) extends into the interior of the storage tank (1).

9. The precision sampler as claimed in claim 1, which is power-free and capable of sampling at any height, is characterized in that: The second steel wire rope (11) is provided with scales.

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