Liquid ammonia sampling device

Abstract

The utility model relates to liquid ammonia sampling technology field, concretely relates to a kind of liquid ammonia sampling device, including bucket, sampling bottle and absorption bottle are arranged in the bucket, single-hole rubber plug is arranged at the opening of sampling bottle, connecting pipe one is inserted in the hole of single-hole rubber plug, and one end of connecting pipe one is inserted into sampling bottle;Double-hole rubber plug is arranged at the opening of absorption bottle, connecting pipe two is inserted in one of the hole of double-hole rubber plug, and one end of connecting pipe two is inserted into absorption bottle;Sampling bottle contains absorption liquid, the other end of connecting pipe one is inserted into the other hole of double-hole rubber plug and is inserted into the absorption liquid.The ammonia gas generated by the ammonia volatilization in sampling bottle in the utility model is entered into absorption bottle by connecting pipe one, ammonia gas is recycled in time by absorption liquid, volatilized ammonia gas is not directly released into air, and after sampling is completed, the harm to operator and environment caused by ammonia gas leakage can be effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of liquid ammonia sampling technology, specifically to a liquid ammonia sampling device. Background Technology

[0002] Liquid ammonia readily evaporates into ammonia gas at room temperature and pressure. Ammonia gas is a harmful gas; when it evaporates into the air, it pollutes the environment and can affect human health.

[0003] In existing technologies, determining the purity of liquid ammonia requires extracting a certain amount of liquid ammonia from the storage container. Container bottle sampling is currently the most widely used sampling method. In practice, a round-bottomed glass bottle is used for liquid ammonia sampling, and the bottle opening is sealed with a rubber stopper after sampling. The disadvantage is that after the bottle opening is sealed with a rubber stopper, the ammonia gas evaporating from the liquid ammonia inside the bottle increases the pressure inside, and the rubber stopper may sometimes burst, releasing ammonia gas, which pollutes the environment and poses a health hazard to operators. Summary of the Invention

[0004] This invention addresses the problem in existing technologies where liquid ammonia is sampled using container bottles, resulting in ammonia volatilization that pollutes the environment and harms the health of the sampler. It proposes a liquid ammonia sampling device that allows the ammonia volatilized from the sampling bottle to be absorbed by the absorbent liquid in the absorption bottle, effectively preventing ammonia leakage and harm to operators and the environment. Furthermore, the sampling bottle and absorption bottle are detachably mounted inside the container via a fixing mechanism, facilitating removal and installation.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A liquid ammonia sampling device includes a barrel containing a sampling bottle and an absorption bottle. The sampling bottle has a single-hole rubber stopper at its opening, and a connecting tube is inserted into the hole of the single-hole rubber stopper, with one end of the connecting tube extending into the sampling bottle. The absorption bottle has a double-hole rubber stopper at its opening, and a connecting tube is inserted into one hole of the double-hole rubber stopper, with one end of the connecting tube extending into the absorption bottle. The sampling bottle contains an absorption liquid, and the other end of the connecting tube is inserted into the other hole of the double-hole rubber stopper and extends into the absorption liquid.

[0007] Furthermore, the barrel body is open at both the top and bottom, and a base is fixedly connected to the bottom of the barrel body. The base has two placement slots: a first placement slot and a second placement slot. The bottom of the sampling bottle is located in the first placement slot, and the bottom of the absorption bottle is located in the second placement slot. Both placement slots have fixing mechanisms at their openings for securing the sampling bottle or absorption bottle. These fixing mechanisms make it simple, convenient, and highly stable to install the sampling bottle and absorption bottle onto the base.

[0008] Furthermore, the fixing mechanism includes two symmetrically arranged sets of limiting components. Each set of limiting components includes a horizontally placed U-shaped frame and a lead screw passing through the two side walls of the U-shaped frame. A slider is threaded onto the lead screw. One side of the slider contacts and slides against the bottom of the U-shaped frame, and the other side of the slider is provided with a slider. The slider is slidably disposed on the two side walls of the U-shaped frame. The sliding direction of the slider is perpendicular to the sliding direction of the slider. The sliding of the slider is driven by the sliding of the slider. The slider can move back and forth along the axial direction of the lead screw.

[0009] Furthermore, the opposing surfaces of both slider one and slider two are set as inclined planes. A dovetail groove is formed on the inclined surface of slider two, and a dovetail protrusion matching the dovetail groove is provided on the inclined surface of slider one. The dovetail groove and dovetail protrusion allow slider one to slide relative to slider two. By setting the opposing surfaces of both sliders as inclined planes, slider one pushes slider two to slide left and right when sliding back and forth, thereby increasing or decreasing the distance between the two sliders two in the fixed mechanism.

[0010] Furthermore, the inner sidewalls of the U-shaped frame opening are all fixed with blocks, and the second slider has a groove that matches the blocks. By setting the blocks and grooves to cooperate, the stability of the second slider during movement is improved.

[0011] Furthermore, one end of the lead screw in each set of limiting components passes through the U-shaped frame and is equipped with a pulley. The two pulleys are connected by a belt. The lead screw in one set of limiting components passes through the barrel and is connected to a knob.

[0012] Furthermore, an arc-shaped groove is provided on the side of the second slider away from the first slider, and a rubber pad is provided in the arc-shaped groove.

[0013] Furthermore, a vent is provided on the barrel body, and the other end of the second connecting pipe extends from the end face of the double-hole rubber plug and communicates with the vent. A filter screen is installed inside the vent. The filter screen serves to prevent dust.

[0014] Furthermore, both the first connecting tube and the second connecting tube are transparent glass tubes.

[0015] Furthermore, the barrel is equipped with a handle, and a lid is fitted on the top of the barrel. This facilitates carrying and opening the lid for sampling.

[0016] The beneficial effects of this utility model through the above technical solution are as follows:

[0017] In this invention, the ammonia gas generated by the volatilization of liquid ammonia in the sampling bottle enters the absorption bottle through the connecting tube. The ammonia gas is promptly recovered through the absorption liquid, and the volatilized ammonia gas is not directly released into the air. After sampling, it can effectively prevent ammonia gas leakage and avoid harm to operators and the environment. Furthermore, the sampling bottle and the absorption bottle are detachably installed in the barrel through a fixing mechanism, which is convenient for removal and installation and easy to operate. Attached Figure Description

[0018] Figure 1 This is a perspective view of a liquid ammonia sampling device according to the present invention;

[0019] Figure 2 This is a schematic diagram showing the connection relationship between the sampling bottle and the absorption bottle in the liquid ammonia sampling device of this utility model;

[0020] Figure 3 This utility model relates to a liquid ammonia sampling device. Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a schematic diagram of the base and fixing mechanism of a liquid ammonia sampling device according to the present invention;

[0022] Figure 5 This is a schematic diagram of the fixing mechanism in a liquid ammonia sampling device according to the present invention;

[0023] Figure 6 The explosion of the limiting component in the liquid ammonia sampling device of this utility model. Figure 1 ;

[0024] Figure 7 The explosion of the limiting component in the liquid ammonia sampling device of this utility model. Figure 2 .

[0025] The numbers in the attached diagram are:

[0026] 1. Barrel body; 2. Sampling bottle; 3. Absorption bottle; 4. Single-hole rubber stopper; 5. Connecting tube one; 6. Double-hole rubber stopper; 7. Connecting tube two; 8. Absorbent liquid; 9. Base; 10. Placement slot one; 11. Placement slot two; 12. U-shaped frame; 13. Lead screw; 14. Slider one; 15. Slider two; 16. Dovetail groove; 17. Dovetail protrusion; 18. Stop block; 19. Slide groove; 20. Pulley; 21. Belt; 22. Knob; 23. Arc groove; 24. Rubber pad; 25. Vent hole; 26. Filter screen; 27. Handle; 28. Barrel lid. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0028] like Figures 1-7As shown, this embodiment provides a liquid ammonia sampling device, including a barrel 1. A sampling bottle 2 and an absorption bottle 3 are disposed inside the barrel 1. A single-hole rubber stopper 4 is provided at the opening of the sampling bottle 2, and a connecting tube 5 is inserted into the hole of the single-hole rubber stopper 4, with one end of the connecting tube 5 extending into the sampling bottle 2. A double-hole rubber stopper 6 is provided at the opening of the absorption bottle 3, and a connecting tube 7 is inserted into one hole of the double-hole rubber stopper 6, with one end of the connecting tube 7 extending into the absorption bottle 3. The sampling bottle 2 contains an absorption liquid 8, and the other end of the connecting tube 5 is inserted into the other hole of the double-hole rubber stopper 6 and extends into the absorption liquid 8.

[0029] The ammonia gas produced by the evaporation of liquid ammonia in sampling bottle 2 enters absorption bottle 3 through connecting tube 5. The ammonia gas is promptly recovered through absorption liquid 8 and is not directly released into the air. Absorption liquid 8 can be hydrochloric acid. Liquid ammonia reacts with hydrochloric acid to produce ammonium chloride, a typical acid-base neutralization reaction. The reaction between liquid ammonia and hydrochloric acid does not require special conditions and can be carried out at room temperature.

[0030] Furthermore, the applicant would like to clarify that both liquid ammonia and hydrochloric acid are highly irritating and corrosive, and appropriate protective equipment, such as gloves, goggles, and masks, should be worn during operation.

[0031] In this embodiment, the barrel 1 is an open barrel with an open top and bottom. A base 9 is fixedly connected to the bottom of the barrel 1. The base 9 has a first placement slot 10 and a second placement slot 11. The bottom of the sampling bottle 2 is located in the first placement slot 10, and the bottom of the absorption bottle 3 is located in the second placement slot 11. Both the first placement slot 10 and the second placement slot 11 have fixing mechanisms at their openings for securing the sampling bottle 2 or the absorption bottle 3. By providing these fixing mechanisms, the installation of the sampling bottle 2 and the absorption bottle 3 onto the base 9 is simple, convenient, and highly stable.

[0032] Specifically, please refer to again Figure 4 and Figure 5 The fixing mechanism includes two symmetrically arranged sets of limiting components. Each set of limiting components includes a horizontally placed U-shaped frame 12 and a lead screw 13 passing through the two side walls of the U-shaped frame 12. A slider 14 is threaded onto the lead screw 13. One side of the slider 14 contacts and slides against the bottom of the U-shaped frame 12, and the other side of the slider 14 is provided with a slider 25. The slider 25 is slidably disposed on the two side walls of the U-shaped frame 12. The sliding direction of the slider 14 is perpendicular to the sliding direction of the slider 25, and the sliding of the slider 14 drives the sliding of the slider 215. When the lead screw 13 rotates, due to the threaded action between the slider 14 and the lead screw 13, the slider 14 moves back and forth along the axial direction of the lead screw 13.

[0033] Please refer to this again. Figure 6 and Figure 7The opposing surfaces of slider 14 and slider 2 15 are both set as inclined surfaces. A dovetail groove 16 is formed on the inclined surface of slider 2 15, and a dovetail protrusion 17 matching the dovetail groove 16 is provided on the inclined surface of slider 14. The dovetail protrusion 17 is placed in the dovetail groove 16. When slider 14 moves along the axial direction of the lead screw 13, the inclined surface of slider 14 acts on the inclined surface of slider 2 15, forcing slider 2 15 to move in a direction closer to or away from the opening of the U-shaped frame 12, thereby increasing or decreasing the distance between the two sliders 2 15 in the fixing mechanism.

[0034] Furthermore, each of the inner walls of the opening of the U-shaped frame 12 is fixed with a stop block 18, and the second slider 15 is provided with a groove 19 that matches the stop block 18. By setting the stop block 18 and the groove 19 to cooperate, the stability of the second slider 15 when moving is improved.

[0035] In this invention, one end of the lead screw 13 in each limiting assembly passes through the U-shaped frame 12 and is equipped with a pulley 20. The two pulleys 20 are connected by a belt 21. The lead screw 13 in one limiting assembly passes through the barrel 1 and is connected to a knob 22. By rotating the knob 22, when one lead screw 13 rotates, the other lead screw 13 is driven to rotate through the belt 21, that is, the two limiting assemblies move synchronously, so that the two sliders 15 move closer to each other, which can fix the sampling bottle 2 or absorption bottle 3 and prevent the sampling bottle 2 or absorption bottle 3 from tipping over. Conversely, when the knob 22 is rotated in the opposite direction, the two sliders 15 move further apart, making it easier to remove the sampling bottle 2 or absorption bottle 3.

[0036] In this embodiment, an arc-shaped groove 23 is provided on the side of the slider 2 15 away from the slider 1 14, and a rubber pad 24 is provided in the arc-shaped groove 23. By providing the rubber pad 24, excessive pressure on the sampling bottle 2 or absorption bottle 3 is avoided to prevent damage.

[0037] In this embodiment, a vent 25 is provided on the barrel 1. The other end of the connecting pipe 7 extends from the end face of the double-hole rubber stopper 6 and is connected to the vent 25. A filter screen 26 is provided inside the vent 25. By providing the vent 25, the absorption bottle 3 is connected to the atmosphere through the connecting pipe 7, thus maintaining pressure balance inside the absorption bottle 3. The filter screen 26 serves as a dust preventer. In addition, both the connecting pipe 5 and the connecting pipe 7 are transparent glass tubes.

[0038] In this embodiment, the barrel 1 is provided with a handle 27, and the top of the barrel 1 is covered with a lid 28. This facilitates carrying and opening the lid 28 for sampling operations.

[0039] It should be noted that a transparent observation window is also provided at the front of the barrel 1 to facilitate observation of the inside of the barrel 1.

[0040] The working principle of this utility model is as follows:

[0041] During sampling, open the barrel lid 28, unscrew the single-hole rubber stopper 4 on the sampling bottle 2, and directly connect the sampling tube from the tanker truck containing liquid ammonia to the mouth of the sampling bottle 2 in this device to begin sampling. After the required volume of liquid ammonia sample has been collected, close the valve on the tanker truck sampling tube, immediately seal the mouth of the sampling bottle 2 with the single-hole rubber stopper 4, and then install the single-hole rubber stopper 4 and connecting pipe 5 to complete the sampling process. The ammonia gas generated by the evaporation of liquid ammonia in the sampling bottle 2 enters the absorption bottle 3 through the connecting pipe 5. The ammonia gas is promptly recovered through the absorption liquid 8 and will not be directly released into the air. The absorption bottle 3 is connected to the atmosphere through the connecting pipe 7 to maintain pressure balance within the absorption bottle 3.

[0042] The retrieved liquid ammonia samples should be analyzed in the laboratory as soon as possible.

[0043] In summary, this device has a simple structure, is easy to use, and has a short sampling time. After sampling, it can effectively prevent the leakage of volatilized ammonia gas, which could cause harm to operators and the environment. Furthermore, the sampling bottle 2 and the absorption bottle 3 are detachably mounted on the base 9, making them easy to remove and install.

[0044] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A liquid ammonia sampling device, comprising a barrel (1), characterized in that, The barrel (1) is equipped with a sampling bottle (2) and an absorption bottle (3). The sampling bottle (2) has a single-hole rubber stopper (4) at its opening. A connecting tube (5) is inserted into the hole of the single-hole rubber stopper (4), and one end of the connecting tube (5) extends into the sampling bottle (2). The absorption bottle (3) has a double-hole rubber stopper (6) at its opening. A connecting tube (7) is inserted into one hole of the double-hole rubber stopper (6), and one end of the connecting tube (7) extends into the absorption bottle (3). The sampling bottle (2) contains an absorption liquid (8). The other end of the connecting tube (5) is inserted into the other hole of the double-hole rubber stopper (6) and extends into the absorption liquid (8). The barrel (1) is an open barrel with both the top and bottom. The bottom of the barrel (1) is fixedly connected to a base (9). The base (9) has a placement slot one (10) and a placement slot two (11). The bottom of the sampling bottle (2) is located in the placement slot one (10), and the bottom of the absorption bottle (3) is located in the placement slot two (11). The openings of the placement slot one (10) and the placement slot two (11) are provided with fixing mechanisms for fixing the sampling bottle (2) or the absorption bottle (3).

2. The liquid ammonia sampling device according to claim 1, characterized in that, The fixing mechanism includes two sets of symmetrically arranged limiting components. Each set of limiting components includes a horizontally placed U-shaped frame (12) and a screw rod (13) passing through the two side walls of the U-shaped frame (12). A slider (14) is threaded onto the screw rod (13). One side of the slider (14) contacts and slides with the bottom of the U-shaped frame (12). A slider (15) is provided on the other side of the slider (14). The slider (15) is slidably disposed on the two side walls of the U-shaped frame (12). The sliding direction of the slider (14) is perpendicular to the sliding direction of the slider (15). The sliding of the slider (14) drives the sliding of the slider (15).

3. The liquid ammonia sampling device according to claim 2, characterized in that, The opposing surfaces of slider one (14) and slider two (15) are both set as inclined surfaces. A dovetail groove (16) is provided on the inclined surface of slider two (15), and a dovetail protrusion (17) matching the dovetail groove (16) is provided on the inclined surface of slider one (14).

4. The liquid ammonia sampling device according to claim 2, characterized in that, The inner sidewall of the opening of the U-shaped frame (12) is fixed with a stop block (18), and the slider two (15) is provided with a groove (19) that matches the stop block (18).

5. A liquid ammonia sampling device according to claim 2, characterized in that, One end of the lead screw (13) in each set of limiting components passes through the U-shaped frame (12) and is provided with a pulley (20). The two pulleys (20) are connected by a belt (21). The lead screw (13) in one set of limiting components passes through the barrel (1) and is connected to a knob (22).

6. A liquid ammonia sampling device according to claim 2, characterized in that, The second slider (15) has an arc-shaped groove (23) on the side away from the first slider (14), and a rubber pad (24) is provided in the arc-shaped groove (23).

7. The liquid ammonia sampling device according to claim 1, characterized in that, The barrel (1) is provided with a vent hole (25). The other end of the connecting pipe (7) extends from the end face of the double-hole rubber plug (6) and is connected to the vent hole (25). A filter screen (26) is provided inside the vent hole (25).

8. The liquid ammonia sampling device according to claim 1, characterized in that, Both the first connecting tube (5) and the second connecting tube (7) are transparent glass tubes.

9. A liquid ammonia sampling device according to claim 1, characterized in that, The barrel (1) is provided with a handle (27), and the top of the barrel (1) is covered with a lid (28).

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