Nitrogen purging residue-free sampler and sampling system

Abstract

The utility model relates to a nitrogen purging residue-free sampler and a sampling system, and the nitrogen purging residue-free sampler comprises an end box shell, a sampling switch lever, a main body box shell, a sampling port, a nitrogen purging pipe, a tail gas exhaust port and a butt joint port, the nitrogen purging no-residue sampler further comprises a nitrogen purging pipe sealing mechanism, a sampling switch rod sealing mechanism, a box shell connecting mechanism, a counter bore sealing gasket, a sampling opening sealing ring and other sealing structures, and the sampling system comprises the nitrogen purging no-residue sampler. Compared with the prior art, the closed nitrogen purging residue-free sampler has the advantages that a closed nitrogen purging residue-free sampling mode is adopted, hidden dangers of safety and occupational health hazards to a sampling operator in the sampling process are basically eradicated, and the closed nitrogen purging residue-free sampler has the advantages of being simple in structure, safe, reliable, convenient to operate and the like.

Description

Technical Field

[0001] This utility model relates to the field of sampler technology, and in particular to a nitrogen-purged residue-free sampler and sampling system. Background Technology

[0002] In the production processes of industries such as petroleum, chemical, and pharmaceutical, sampling and analysis of final products or intermediate products are necessary to effectively control product quality. However, the presence of toxic, flammable, or corrosive gases in these products poses safety and occupational health hazards to sampling operators during the sampling process.

[0003] Currently, most sampling methods in the industry are open valve sampling, while some samplers are equipped with sampling boxes. CN201615849U discloses a sealed sampler, including a hollow sampler body and a sampling bottle. The sampler body has a sampling bottle interface with a sampling port at its bottom. Cooling water inlet and outlet pipes are connected to the inner cavity of the sampler body, and a cooling pipe is installed in the middle of the inner cavity. It also includes an adsorbent containing an adsorbent. The sampling bottle interface has a vent port connected to the adsorbent, and a vent pipe is installed on the adsorbent. A one-way valve consisting of a spring and a valve core is installed inside the sampling port at the sampling bottle interface to seal the sampling port from the inside. The sampling bottle opening has a liquid inlet and a vent port. The liquid inlet and vent port of the sampling bottle correspond to the sampling port and vent port of the sampler body, respectively. The sampler also includes a control valve. A nitrogen purging channel inside the control valve seat is connected to the outlet of the control valve seat. A one-way valve is installed in the nitrogen purging channel inside the valve seat to prevent backflow of the medium into the nitrogen pipeline. However, this sealed sampler has the following shortcomings: 1. The vent outlet directly discharges into the atmosphere, polluting the environment; 2. The sampling bottle and sampler directly sample, and there is no sealing protection in case of leakage, endangering personnel safety; 3. When welding the sampler and the main pipeline, the opening is too large, making it difficult to guarantee the welding quality; the installation of the sampler involves a hot work process, and hot work maintenance is not possible during system operation, limiting the maintenance of the sampler; 4. During nitrogen purging, the sharp corners of the internal structure of the adsorber and the cooling coil result in many dead zones, making it impossible to smoothly purge the fluid and leaving a lot of residue. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a nitrogen-purged residue-free sampler and sampling system. This system employs a closed-loop nitrogen purging method, virtually eliminating safety and occupational health hazards for the sampling operator during the sampling process. This invention provides a closed-loop nitrogen-purged residue-free sampler with simple structure, high safety and reliability, and ease of operation. Specifically, this invention is a sampler for use in chemical containers, specifically a novel sampler for achieving fully enclosed nitrogen purging of liquid materials within the container, leaving no residue. During sampling, the operator does not need to contact the sampling bottle; the sampler is equipped with nitrogen purging, and the exhaust gas after purging is recovered.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] The first objective of this invention is to provide a nitrogen-purged residue-free sampler, comprising an end housing, a sampling switch rod, a main housing, a sampling port, a nitrogen purging pipe, a tail gas discharge port, and a connecting port. The end housing is connected to the main housing to form a sampler housing, and a cavity is formed inside the sampler housing. The end housing of the sampler housing has a connecting port for connecting a valve to allow material to flow into the cavity. The end housing of the sampler housing has a sampling port for connecting with a sampling bottle to discharge material. The sampling switch rod is connected to the end housing of the sampler housing and is used to adjust the opening and closing of the sampling port. The nitrogen purging pipe is connected to the main housing of the sampler housing and is used to introduce nitrogen into the cavity for purging. The end housing of the sampler housing has a tail gas discharge port for discharging nitrogen tail gas.

[0007] Furthermore, the valve connected to the interface is a root ball valve.

[0008] Furthermore, the nitrogen purging residue-free sampler also includes a nitrogen purging tube sealing mechanism, which is used to achieve sealing during the insertion and removal of the nitrogen purging tube; the nitrogen purging tube sealing mechanism includes a pressure ring sealing gasket, a pressure ring, and a screw cap; the pressure ring sealing gasket is disposed between the nitrogen purging tube and the main body shell of the sampler housing; one end of the pressure ring is connected to one end of the pressure ring sealing gasket, and the pressure ring is used to press the pressure ring sealing gasket; the other end of the pressure ring is connected to the screw cap, and the screw cap is used to press the pressure ring; the screw cap is connected to the main body shell of the sampler housing.

[0009] Furthermore, the nitrogen purging tube sealing mechanism also includes a sealing sleeve; the sealing sleeve is fitted onto the nitrogen purging tube, the sealing sleeve is located inside the cavity, and one side of the sealing sleeve is connected to the inner wall of the sampler housing.

[0010] Furthermore, one side of the sealing sleeve is pressed and fixed to the inner wall of the sampler housing by a clamping ring.

[0011] Furthermore, the nitrogen-purged residue-free sampler also includes a sampling switch rod sealing mechanism, which is used to seal the sampling switch rod; the sampling switch rod sealing mechanism includes a sampling switch rod sealing ring and a sampling switch rod end sealing sleeve; the sampling switch rod sealing ring is located between the sampling switch rod and the main body shell of the sampler housing; the sampling switch rod end sealing sleeve is connected to the end of the sampling switch rod near the sampling port.

[0012] Furthermore, the nitrogen purging residue-free sampler also includes a housing connection mechanism, which is used to connect the end housing and the main housing; the housing connection mechanism includes a fastening hexagonal bolt and a washer; the washer is located between the end housing and the main housing; the fastening hexagonal bolt connects the end housing and the main housing.

[0013] Furthermore, the nitrogen purging residue-free sampler also includes a countersunk hole sealing gasket; the countersunk hole sealing gasket is disposed between the end of the nitrogen purging tube and the mating interface.

[0014] Furthermore, the nitrogen-purged residue-free sampler also includes a sampling port sealing ring; the sampling port sealing ring is arranged around the sampling port; the sampling port sealing ring is used to cooperate with the sampling bottle to achieve a seal between the sampling bottle and the sampling port.

[0015] The second objective of this invention is to provide a sampling system, including a nitrogen-purged residue-free sampler, and the sampling system further includes a sampling box; the nitrogen-purged residue-free sampler is connected to the sampling box; the sampling system also includes a root ball valve; the root ball valve is connected to the end of the end housing.

[0016] Furthermore, the sampler housing of the nitrogen purging residue-free sampler is mostly located inside the sampling box, with only the end of the end housing passing through the body of the sampling box; the sampling switch rod of the nitrogen purging residue-free sampler passes through the body of the sampling box, and the nitrogen purging tube passes through the body of the sampling box.

[0017] Furthermore, the sampling system also includes a bottle stopper and a sampling bottle; the sampling bottle is located inside the sampling box, and the sampling bottle is positioned below the sampling port, corresponding to the sampling port; the bottle stopper is located inside the sampling box.

[0018] Furthermore, the sampling system also includes a stopper operating rod and a sampling bottle operating rod; the stopper operating rod is connected to the sampling box and is used to place the stopper; the sampling bottle operating rod is connected to the sampling box and is used to place the sampling bottle.

[0019] Furthermore, the sampling system also includes an exhaust gas interface and a nitrogen purge port; the exhaust gas interface is connected to the exhaust gas outlet through an exhaust gas collection pipe, and the exhaust gas interface is used to discharge nitrogen exhaust gas; the nitrogen purge port is connected to a nitrogen purge pipe, and the nitrogen purge port is used to introduce nitrogen into the nitrogen purge pipe.

[0020] Furthermore, the exhaust gas interface is connected to an external exhaust gas treatment system or activated carbon adsorption bottle.

[0021] Furthermore, the exhaust port is equipped with an exhaust valve.

[0022] Furthermore, a nitrogen inlet valve is provided on the nitrogen purging port.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) The nitrogen-purged residue-free sampler and sampling system provided by this utility model utilizes a closed, isolated structure to place the sampled liquid material inside the sampler's enclosed cavity, thus isolating it from the medium in the original sampling container and cutting off the pressure source. The sample is placed in the sampling bottle at atmospheric pressure. The liquid material inside the sampler's cavity is isolated from the container to be sampled, eliminating the pressure source. Subsequent material sampling is equivalent to atmospheric pressure sampling, preventing material splashing and unsafe conditions caused by excessive internal pressure.

[0025] (2) The nitrogen-purged residue-free sampler and sampling system provided by this utility model uses nitrogen to purge residual materials inside the sampler, which basically eliminates the possibility of residual material on the inner wall of the sampler during the sampling process, thus preventing dripping and corrosion. During purging, nitrogen is blown through the air hole at the inner end of the purging tube to purge the residual liquid inside the cavity. The liquid flows into the sampling bottle at the bottom. The sampler housing is equipped with a tail gas discharge port, which reduces the possibility of tail gas leakage into the sampling box.

[0026] (3) The nitrogen purging residue-free sampler and sampling system provided by this utility model further improves upon this invention by having a sealed sleeve for the nitrogen purging tube, and by using a clamping ring to press the other end of the sealed sleeve against the main body shell. This ensures that the nitrogen purging tube is completely isolated from the internal space when it is freely inserted and removed from the inside and outside, increasing the safety of the sampling process. At the same time, the sampler is placed in a closed box, and the sampling and sealing process is completely enclosed, essentially eliminating the possibility of the sampling operator coming into contact with the material. Attached Figure Description

[0027] Figure 1 This is a schematic diagram (cross-sectional view) of the overall structure of the sampling system of this utility model;

[0028] Figure 2 This is a structural schematic diagram (cross-sectional view) of the nitrogen purging residue-free sampler of this utility model;

[0029] Figure 3 for Figure 2 A magnified top view of part A in the middle;

[0030] Figure 4 for Figure 2 Enlarged view of part B in the middle;

[0031] Figure 5 for Figure 4 A cross-sectional schematic diagram of CC.

[0032] The numbers in the diagram are as follows:

[0033] 1-End housing; 2-Fastening hexagonal bolt; 3-Gasket; 4-Sampling switch rod sealing ring; 5-Sampling switch rod; 6-Sealing sleeve; 7-Pressure ring sealing gasket; 8-Pressure ring; 9-Screw cap; 10-Main housing; 11-Sampling switch rod end sealing sleeve; 12-Sampling port sealing ring; 13-Counterhole sealing gasket;

[0034] 14-Root ball valve; 15-Sampling box; 16-Sampler; 17-Tail gas inlet; 18-Nitrogen purging port; 19-Bottle stopper operating lever; 20-Bottle stopper; 21-Sampling bottle; 22-Sampling bottle operating lever;

[0035] 23-Sampling port; 24-Nitrogen purging pipe; 25-Exhaust gas outlet; 26-Mating interface; 27-Mating part. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Any component models, material names, connection structures, control methods, etc., not explicitly described in this technical solution are considered common technical features disclosed in the prior art.

[0037] It should be noted that the orientations or positional relationships indicated by terms such as "front," "rear," "left," "right," "up," "down," "inner," and "outer" in this application are based on the orientations or positional relationships indicated in the accompanying drawings. They are used for the purpose of making the description of this application more concise and clear, and do not imply that the connecting parts or components must have definite positional limitations. Therefore, they should not be considered as limitations on this application. Furthermore, the embodiments described in this application are only a part of the embodiments of this utility model and cannot represent all embodiments. Other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0038] 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 or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0040] Example 1

[0041] like Figures 1-5 As shown, this embodiment provides a nitrogen-purged residue-free sampler, which includes an end housing 1, a sampling switch rod 5, a main housing 10, a sampling port 23, a nitrogen purging pipe 24, a tail gas discharge port 25, and a connecting port 26; the end housing 1 and the main housing 10 are connected to form a sampler housing, and a cavity is formed inside the sampler housing; the end housing 1 is provided with a connecting port 26, which is used to connect a valve to allow material to flow into the cavity through the valve, and the valve is a root The end housing 1 is equipped with a ball valve 14; a sampling port 23 is provided on the end housing 1, which is used to connect with the sampling bottle 21 to discharge material; a sampling switch rod 5 is connected to the end housing 1, which is used to adjust the opening and closing of the sampling port 23; a nitrogen purging pipe 24 is connected to the main housing 10, which is used to introduce nitrogen into the cavity for purging; and a tail gas discharge port 25 is provided on the end housing 1, which is used to discharge nitrogen tail gas.

[0042] The nitrogen purging residue-free sampler also includes a nitrogen purging tube sealing mechanism, which is used to achieve sealing when the nitrogen purging tube 24 is inserted or removed. The nitrogen purging tube sealing mechanism includes a pressure ring sealing gasket 7, a pressure ring 8, and a screw cap 9. The pressure ring sealing gasket 7 is located between the nitrogen purging tube 24 and the main body housing 10. One end of the pressure ring 8 is connected to one end of the pressure ring sealing gasket 7, and the pressure ring 8 is used to press the pressure ring sealing gasket 7. The other end of the pressure ring 8 is connected to the screw cap 9, and the screw cap 9 is used to press the pressure ring 8. The screw cap 9 is connected to the main body housing 10.

[0043] The nitrogen purging tube sealing mechanism also includes a sealing sleeve 6; the sealing sleeve 6 is sleeved on the nitrogen purging tube 24, the sealing sleeve 6 is located in the cavity, and one side of the sealing sleeve 6 is connected to the inner wall of the sampler housing.

[0044] One side of the sealing sleeve 6 is pressed and fixed to the inner wall of the sampler housing by the clamping ring.

[0045] The nitrogen-purged residue-free sampler also includes a sampling switch rod sealing mechanism, which is used to seal the sampling switch rod 5. The sampling switch rod sealing mechanism includes a sampling switch rod sealing ring 4 and a sampling switch rod end sealing sleeve 11. The sampling switch rod sealing ring 4 is located between the sampling switch rod 5 and the main housing 10. The sampling switch rod end sealing sleeve 11 is connected to the end of the sampling switch rod 5, which is close to the sampling port 23.

[0046] The nitrogen purging residue-free sampler also includes a housing connection mechanism, which is used to connect the end housing 1 and the main housing 10. The housing connection mechanism includes a fastening hexagonal bolt 2 and a washer 3. The washer 3 is located between the end housing 1 and the main housing 10. The fastening hexagonal bolt 2 connects the end housing 1 and the main housing 10.

[0047] The nitrogen purging residue-free sampler also includes a countersunk hole sealing gasket 13; the countersunk hole sealing gasket 13 is disposed between the end of the nitrogen purging tube 24 and the interface 26.

[0048] The interface 26 is provided with a docking part 27, which is cap-shaped. The countersunk sealing gasket 13 is connected to the docking part 27. A countersunk hole is provided on one side of the docking part 27. The countersunk sealing gasket 13 is located between the end of the nitrogen purging pipe 24 and the countersunk hole of the docking part 27. The docking part 27 and the inner wall of the end housing 1 are integrally formed. A through hole is provided between the docking part 27 and the end housing 1. Multiple through holes are arranged circumferentially. After the material passes through the root ball valve 14, it enters the cavity through the through hole.

[0049] The nitrogen purge pipe 24 is inclined, with the end of the nitrogen purge pipe 24 near the interface 26 being higher than the other end. The end of the nitrogen purge pipe 24 has a branch opening to better achieve purging.

[0050] The nitrogen-purged residue-free sampler also includes a sampling port sealing ring 12; the sampling port sealing ring 12 is arranged around the sampling port 23; the sampling port sealing ring 12 is used to cooperate with the sampling bottle to achieve a seal between the sampling bottle and the sampling port 23.

[0051] Example 2

[0052] like Figures 1-5 As shown, this embodiment provides a sampling system, which includes the nitrogen-purged residue-free sampler from Embodiment 1, namely sampler 16.

[0053] The sampling system also includes a sampling box 15; the nitrogen-purged residue-free sampler 16 is connected to the sampling box 15.

[0054] The sampling system also includes a root ball valve 14, one end of which is connected to the end of the end housing 1, and the other end of which is connected to the sampling device port (the port of the chemical container). The sampling device is a chemical container, which contains liquid material to be sampled.

[0055] The sampler housing of the nitrogen purging residue-free sampler 16 is mostly located inside the sampling box 15, with only the end of the end housing 1 passing through the body of the sampling box 15 and then connecting to the root ball valve 14; the sampling switch rod 5 of the nitrogen purging residue-free sampler 16 passes through the body of the sampling box 15, and the nitrogen purging pipe 24 passes through the body of the sampling box 15.

[0056] The sampling system also includes a bottle stopper 20 and a sampling bottle 21; the sampling bottle 21 is located inside the sampling box 15, and the sampling bottle 21 is arranged corresponding to the sampling port 23 and located below the sampling port 23; the bottle stopper 20 is located inside the sampling box 15.

[0057] The sampling system also includes a stopper operating rod 19 and a sampling bottle operating rod 22; the stopper operating rod 19 is connected to the sampling box 15 and is used to place the stopper 20; the sampling bottle operating rod 22 is connected to the sampling box 15 and is used to place the sampling bottle 21.

[0058] The sampling system also includes an exhaust gas interface 17 and a nitrogen purge port 18; the exhaust gas interface 17 is connected to the exhaust gas outlet 25 through an exhaust gas collection pipe, and the exhaust gas interface 17 is used to discharge nitrogen exhaust gas; the nitrogen purge port 18 is connected to the nitrogen purge pipe 24, and the nitrogen purge port 18 is used to introduce nitrogen into the nitrogen purge pipe 24.

[0059] The exhaust gas interface 17 is connected to an external exhaust gas treatment system or activated carbon adsorption bottle.

[0060] An exhaust valve is provided on the exhaust port 17.

[0061] The nitrogen purge port 18 is equipped with a nitrogen inlet valve.

[0062] The sampling bottle operating lever 22 is equipped with a rubber bottle holder at its end.

[0063] The end of the stopper operating lever 19 is provided with a rubber cap holder.

[0064] The sampling box 15 is equipped with an openable door.

[0065] The sampling system operates by the following steps:

[0066] First, place the sampling bottle 21 into the bottle holder at the end of the sampling bottle operating rod 22, and simultaneously place the bottle stopper 20 into the bottle cap holder at the end of the bottle stopper operating rod 19. The sampling box 15 has a transparent observation window on its door. The sampling box 15 isolates the sampling process and allows for direct observation of the entire sampling process. Push the sampling bottle 21 up through the sampling bottle operating rod 22 to the rubber sealing ring at the sampling port of the sampler 16 to seal the bottle mouth and the sampling port 23 of the sampler 16.

[0067] The root ball valve 14 at the front end of the sampler 16 is connected to the inlet of the chemical container. The liquid sample flows into the internal cavity of the sampler 16 through the root ball valve 14. After the cavity of the sampler 16 is full, the valve of the root ball valve 14 is closed. The liquid material in the cavity of the sampler 16 is isolated from the inside of the chemical container to be sampled, and the pressure source is cut off. In the subsequent material sampling process, it is equivalent to sampling at normal pressure. The material will not splash during the sampling process due to excessive pressure inside the equipment, which may lead to unsafe conditions.

[0068] Rotate the sampling switch 5 at the top of the sampler 16 to open the sampling port 23 at the bottom of the sampler 16, allowing the material to flow by gravity into the sampling bottle 21. After all the material in the cavity of the sampler 16 has been emptied, open the nitrogen inlet valve of the nitrogen purge port 24 and the exhaust valve of the tail gas interface 17. The nitrogen purge port 24 can be pulled out to purge the material remaining on the inner wall of the cavity of the sampler 16. The remaining material flows into the bottom sampling bottle 21, and at the same time, the nitrogen tail gas containing the sampled material enters the tail gas treatment system or activated carbon adsorption bottle through the tail gas interface 17.

[0069] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A nitrogen-purged residue-free sampler, characterized in that, The nitrogen purging residue-free sampler includes an end housing (1), a sampling switch rod (5), a main housing (10), a sampling port (23), a nitrogen purging pipe (24), a tail gas emission port (25), and a docking port (26). The end housing (1) is connected to the main housing (10) to form a sampler housing, and a cavity is formed inside the sampler housing; The sampler housing is provided with a connection interface (26), which is used to connect a valve to allow material to flow into the cavity through the valve; The sampler housing is provided with a sampling port (23), which is used to connect with the sampling bottle (21) to discharge material; The sampling switch rod (5) is connected to the sampler housing, and the sampling switch rod (5) is used to adjust the opening and closing of the sampling port (23); The nitrogen purging tube (24) is connected to the sampler housing and is used to introduce nitrogen into the cavity for purging. The sampler housing is provided with a tail gas discharge port (25), which is used to discharge nitrogen tail gas.

2. The nitrogen-purged residue-free sampler according to claim 1, characterized in that, The nitrogen purging residue-free sampler also includes a nitrogen purging tube sealing mechanism, which is used to achieve sealing when the nitrogen purging tube (24) is inserted or removed. The nitrogen purging pipe sealing mechanism includes a pressure ring sealing gasket (7), a pressure ring (8), and a screw cap (9); The pressure ring sealing gasket (7) is located between the nitrogen purging pipe (24) and the sampler housing; One end of the pressure ring (8) is connected to one end of the pressure ring sealing gasket (7), and the pressure ring (8) is used to press the pressure ring sealing gasket (7). The other end of the pressure ring (8) is connected to the screw cap (9), which is used to press the pressure ring (8). The screw cap (9) is connected to the sampler housing; The nitrogen purging pipe sealing mechanism also includes a sealing sleeve (6). The sealing sleeve (6) is fitted onto the nitrogen purge tube (24), the sealing sleeve (6) is located inside the cavity, and one side of the sealing sleeve (6) is connected to the inner wall of the sampler housing.

3. The nitrogen-purged residue-free sampler according to claim 1, characterized in that, The nitrogen-purged residue-free sampler also includes a sampling switch rod sealing mechanism, which is used to seal the sampling switch rod (5); The sampling switch rod sealing mechanism includes a sampling switch rod sealing ring (4) and a sampling switch rod end sealing sleeve (11). The sampling switch rod sealing ring (4) is located between the sampling switch rod (5) and the sampler housing; The end sealing sleeve (11) of the sampling switch rod is connected to the end of the sampling switch rod (5) near the sampling port (23).

4. The nitrogen-purged residue-free sampler according to claim 1, characterized in that, The nitrogen purging residue-free sampler also includes a housing connection mechanism, which is used to connect the end housing (1) with the main housing (10); The housing connection mechanism includes a fastening hexagonal bolt (2) and a washer (3); The gasket (3) is disposed between the end housing (1) and the main housing (10); The fastening hexagonal bolt (2) connects the end housing (1) to the main housing (10).

5. The nitrogen-purged residue-free sampler according to claim 1, characterized in that, The nitrogen-purged residue-free sampler also includes a countersunk sealing gasket (13). The countersunk sealing gasket (13) is located between the end of the nitrogen purging pipe (24) and the mating interface (26).

6. The nitrogen-purged residue-free sampler according to claim 1, characterized in that, The nitrogen-purged residue-free sampler also includes a sampling port sealing ring (12). The sampling port sealing ring (12) is arranged around the sampling port (23); The sampling port sealing ring (12) is used to cooperate with the sampling bottle to achieve a seal between the sampling bottle and the sampling port (23).

7. A sampling system comprising a nitrogen-purged residue-free sampler as described in any one of claims 1-6, characterized in that, The sampling system also includes a sampling box (15). The nitrogen-purged residue-free sampler (16) is connected to the sampling box (15); The sampling system also includes a root ball valve (14). The root ball valve (14) is connected to the end of the end housing (1).

8. The sampling system according to claim 7, characterized in that, The sampling system also includes a stopper (20) and a sampling bottle (21). The sampling bottle (21) is placed inside the sampling box (15), and the sampling bottle (21) is arranged correspondingly to the sampling port (23), and is located below the sampling port (23); The bottle stopper (20) is located inside the sampling box (15).

9. The sampling system according to claim 8, characterized in that, The sampling system also includes a stopper operating lever (19) and a sampling bottle operating lever (22). The stopper operating rod (19) is connected to the sampling box (15), and the stopper operating rod (19) is used to place the stopper (20). The sampling bottle operating lever (22) is connected to the sampling box (15), and the sampling bottle operating lever (22) is used to place the sampling bottle (21).

10. The sampling system according to claim 7, characterized in that, The sampling system also includes an exhaust gas interface (17) and a nitrogen purging port (18). The exhaust port (17) is connected to the exhaust outlet (25) through an exhaust collection pipe. The exhaust port (17) is used to discharge nitrogen exhaust gas. The nitrogen purge port (18) is connected to the nitrogen purge pipe (24), and the nitrogen purge port (18) is used to introduce nitrogen into the nitrogen purge pipe (24).

Images