Closed sampling system

Abstract

The utility model relates to the technical field of chemical engineering, in particular to a closed sampling system. The closed sampling system comprises a sample injection valve, a flush valve, a cooler, a sampling assembly and an air extractor, the input end of the sample injection valve is communicated with a process pipeline, the output ends of the sample injection valve and the flush valve are both communicated with the input end of the cooler, the output end of the cooler is communicated with the sampling assembly, and the air extractor is communicated with the sampling assembly. High-temperature toxic slurry in a process pipeline is obtained by the sample injection valve and enters the cooler to be cooled, the cooled slurry enters the sampling assembly to complete sampling, volatile toxic gas is extracted by the gas extractor, and cleaning is performed through the flushing valve after sampling is completed. The closed sampling system is easy to operate and low in use and maintenance cost, workers can complete sampling operation conveniently, poisonous gas harm and pollution are reduced, meanwhile, it is guaranteed that system pipelines are not blocked, and it is guaranteed that the workers are not scalded in the sampling process.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical industry, in particular to a closed sampling system. Background Art

[0002] In industrial production activities, in order to ensure product quality, factories need to take samples and analyze key production links to determine whether the product quality is stable and reliable. In view of the shortcomings of traditional simple sampling when facing process media such as toxic slurries, such as high risk, complex operation, weak sample representativeness or inability to obtain samples, with the increasingly stringent domestic environmental protection, closed-loop sampling systems that can safely, environmentally friendly, and obtain representative samples are becoming increasingly popular in chemical plants. However, for high-temperature toxic slurries, because the medium temperature is high and it contains volatile toxic gases and solid particles that cause pipeline blockage, conventional closed samplers cannot meet their safe and closed sampling requirements, causing great difficulties in sampling during the actual production process and also affecting the factory's safety and environmental protection acceptance inspection. Therefore, it is necessary to develop supporting closed sampling equipment suitable for high-temperature toxic slurries.

[0003] Chinese utility model patent publication number CN203337412U discloses a slurry sampling device for high-temperature and high-pressure environments, comprising a sampling branch pipe mounted on a high-temperature and high-pressure slurry pipe. The device is characterized in that a slurry sampling valve is mounted on the sampling branch pipe, and a sample container is mounted at the end thereof, wherein a sampling cup is placed within the sample container. The device utilizes a manually controlled two-position, three-way air valve to control a piston cylinder for sampling. The device can safely collect representative slurry from a remote location without requiring an operator to sample the slurry from a high-temperature and high-pressure pipe at close range. The sampled slurry is representative and independent of the operator's sampled clinker content, providing a prerequisite for the accuracy of laboratory test data. Furthermore, the device allows the valve control switch to be mounted at a remote location, thereby avoiding the dangers posed to the operator by high temperature and high pressure. The device is safe and reliable, has a simple structure, and is inexpensive to manufacture.

[0004] Although the above-mentioned slurry sampling device under high temperature and high pressure can be remotely operated to prevent workers from being injured during the sampling process, it is difficult to use it for high-temperature toxic slurries containing volatile toxic gases and solid particles that are likely to cause pipeline blockage. Since it only uses a manually controlled two-position three-way air valve to control the piston cylinder to complete sampling, it is easy to cause the entire sampling system to be blocked, and at the same time, it will cause toxic gases to overflow and cause pollution. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a closed sampling system, which is easy to operate and has low use and maintenance costs. It is especially suitable for high-temperature toxic slurries containing volatile toxic gases and solid particles that are easy to cause pipeline blockage. It is convenient for workers to complete sampling operations, reduces the hazards and pollution of toxic gases, and at the same time ensures that the system pipelines are not blocked, protecting workers from burns during the sampling process.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A closed sampling system includes an injection valve, a flushing valve, a cooler, a sampling assembly and an air extraction device. The input end of the injection valve is connected to a process pipeline, the output ends of the injection valve and the flushing valve are both connected to the input end of the cooler, the output end of the cooler is connected to the sampling assembly, and the air extraction device is connected to the sampling assembly.

[0008] Furthermore, the sampling assembly includes a sampling box, a sampling valve, a sampling bottle and a supported drainage funnel. The supported drainage funnel is installed on the inner bottom of the sampling box, and the output end of the supported drainage funnel extends outward through the sampling box and is arranged outside the sampling box. The sampling valve is installed in the sampling box, and the input end of the sampling valve is connected to the output end of the cooler. The output end of the sampling valve is located directly above the supported drainage funnel. The sampling bottle can be placed on the top of the supported drainage funnel, and the sampling bottle is located between the sampling valve and the supported drainage funnel.

[0009] Furthermore, the cooler includes a shell and a cooling tank, the cooling tank is installed in the shell, the input end of the cooling tank is connected to the output ends of the injection valve and the flushing valve respectively, the output end of the cooling tank is connected to the input end of the sampling valve, and a circulating water inlet and a circulating water outlet are respectively opened on the left and right sides of the shell, the circulating water inlet is located above the circulating water outlet, and the cooling tank is located between the circulating water inlet and the circulating water outlet, and circulating water flows in through the circulating water inlet and flows out through the circulating water outlet to cool the cooling tank.

[0010] Furthermore, operation holes are provided on both the left and right sides of the sampling box.

[0011] Furthermore, rubber gloves are provided at the operation hole.

[0012] Furthermore, an air extraction hole is opened on one side of the sampling box, and the air extraction hole is connected to the air extraction device.

[0013] Furthermore, the sampling box includes a box door.

[0014] Furthermore, a window is embedded in the front surface of the door.

[0015] Furthermore, an electric control button is embedded on the front surface of the door.

[0016] Furthermore, it includes a controller, and the injection valve, flushing valve, cooler, air extraction device, sampling valve and electric control button are all electrically connected to the controller.

[0017] Beneficial effects of the present invention: The present invention discloses a closed sampling system, including an injection valve, a flushing valve, a cooler, a sampling assembly and an exhaust device. The input end of the injection valve is connected to the process pipeline, the output ends of the injection valve and the flushing valve are both connected to the input end of the cooler, the output end of the cooler is connected to the sampling assembly, and the exhaust device is connected to the sampling assembly. The injection valve is used to access the process pipeline to obtain the high-temperature toxic slurry in the process pipeline. The high-temperature toxic slurry enters the cooler through the injection valve for cooling. The cooled high-temperature toxic slurry then enters the sampling assembly to complete sampling. During the sampling process of the staff through the sampling assembly, the exhaust device is used to extract the volatile toxic gas, reduce the harm and pollution of the toxic gas, and ensure that the system pipeline is not blocked. After the sampling is completed, the cooler and the sampling assembly are cleaned through the flushing valve to remove the residual toxic slurry. The closed sampling system of the present application is easy to operate and has low usage and maintenance costs. It is especially suitable for high-temperature toxic slurries containing volatile toxic gases and solid particles that can easily cause pipeline blockage. It facilitates workers to complete sampling operations, reduces the hazards and pollution of toxic gases, and ensures that the system pipelines are not blocked, protecting workers from burns during the sampling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a flowchart of the utility model;

[0019] Figure 2 This is a schematic structural diagram of the sampling assembly of the present invention.

[0020] Explanation of the reference numerals: injection valve 1, flushing valve 2, cooler 3, housing 31, cooling tank 32, circulating water inlet 33, circulating water outlet 34, exhaust device 4, sampling box 5, operating hole 51, rubber gloves 52, exhaust hole 53, box door 54, window 55, electric control button 56, sampling valve 6, sampling bottle 7, drainage funnel with support 8. DETAILED DESCRIPTION

[0021] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0022] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of the stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0023] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside", "outside", "inside", "outside", "below", "beneath", "above", "above", etc. Such spatially relative terms are meant to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, then an element described as "below other elements or features" or "below other elements or features" will then be oriented as "above other elements or features" or "above other elements or features". Thus, the example term "below..." can include both above and below orientations. The device can be oriented otherwise (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein are interpreted accordingly.

[0024] Example 1:

[0025] like Figure 1 and Figure 2As shown, this embodiment provides a closed sampling system, which includes an injection valve 1, a flushing valve 2, a cooler 3, a sampling assembly and an exhaust device 4. The input end of the injection valve 1 is connected to the process pipeline, the output ends of the injection valve 1 and the flushing valve 2 are both connected to the input end of the cooler 3, the output end of the cooler 3 is connected to the sampling assembly, and the exhaust device 4 is connected to the sampling assembly. During actual use, the sampling valve 1 is used to access the process pipeline to obtain the high-temperature toxic slurry in the process pipeline. The high-temperature toxic slurry enters the cooler 3 through the sampling valve 1 for cooling. The cooled high-temperature toxic slurry then enters the sampling assembly to complete sampling. During the sampling process of the staff passing through the sampling assembly, the staff cooperates with the exhaust device 4 to extract the volatilized toxic gas, reduce the toxic gas hazards and pollution, and ensure that the system pipeline is not blocked. After sampling is completed, the cooler 3 and the sampling assembly are cleaned by the flushing valve 2 to remove the residual toxic slurry. When performing the sampling work, it is necessary to first close the sampling valve 1, the flushing valve 2 and the sampling valve 6 arranged in the sampling assembly, and then open the sampling valve 1 for a period of time and then close it. The high-temperature toxic slurry enters the cooler 3 to cool for a period of time, and then open the sampling valve 6 arranged in the sampling assembly to carry out final sampling. Sampling is completed; when performing the cleaning work, the flushing valve 2 is opened, and the cleaning liquid flows into the cooler 3 and the sampling assembly, and the cleaning work is completed for the cooler 3 and the sampling assembly.

[0026] In this embodiment, the sampling assembly includes a sampling box 5, a sampling valve 6, a sampling bottle 7 and a supported drainage funnel 8. The supported drainage funnel 8 is installed on the inner bottom of the sampling box 5. The output end of the supported drainage funnel 8 extends outward through the sampling box 5 and is arranged outside the sampling box 5. The sampling valve 6 is installed in the sampling box 5. The input end of the sampling valve 6 is connected to the output end of the cooler 3. The output end of the sampling valve 6 is located directly above the supported drainage funnel 8. The sampling bottle 7 can be placed on the top of the supported drainage funnel 8. The sampling bottle 7 is located between the sampling valve 6 and the supported drainage funnel 8. In actual use, the sampling box 5 is used to install the connected devices, the sampling valve 6 is used to obtain the cooled high-temperature toxic slurry from the cooler 3, and discharge the obtained high-temperature toxic slurry into the sampling bottle 7, the sampling bottle 7 is used to store the cooled high-temperature toxic slurry, the supporting drainage funnel 8 is used to support the sampling bottle 7 to facilitate the stable placement of the sampling bottle 7, and the supporting drainage funnel 8 is convenient for subsequent cleaning and discharge of waste liquid; when sampling, the staff needs to open the sampling box 5, place the sampling bottle 7 on the top of the supporting drainage funnel 8, and unscrew the sampling bottle 7 bottle cap, and then close the sampling box 5, control the sampling valve 6 to open, the high-temperature toxic slurry falls into the sampling bottle 7, and then the air in the sampling box 5 and the waste gas volatilized by the high-temperature toxic slurry are extracted through the vacuum device 4. After pumping for a while, the staff operates the sampling bottle 7 through the sampling box 5 to screw on the bottle cap, and then vacuum for a period of time. The staff can open the sampling box 5 and take out the sampling bottle 7. After the sampling is completed, the flushing valve 2 is opened to flush the cooler 3 and the sampling valve 6 downstream. The subsequent waste liquid is discharged from the sampling box 5 through the supported drainage funnel 8.

[0027] In this embodiment, the cooler 3 includes a shell 31 and a cooling tank 32. The cooling tank 32 is installed in the shell 31. The input end of the cooling tank 32 is respectively connected to the output ends of the injection valve 1 and the flushing valve 2, and the output end of the cooling tank 32 is connected to the input end of the sampling valve 6. A circulating water inlet 33 and a circulating water outlet 34 are respectively provided on the left and right sides of the shell 31. The circulating water inlet 33 is located above the circulating water outlet 34. The cooling tank 32 is located between the circulating water inlet 33 and the circulating water outlet 34. Circulating water flows in through the circulating water inlet 33 and flows out through the circulating water outlet 34 to cool the cooling tank. In actual use, the shell 31 is used to install connected devices, and the cooling tank 32 is used to cool the high-temperature toxic slurry entering the cooling tank 32, so as to facilitate subsequent sampling by the staff. The circulating water inlet 33 and the circulating water outlet 34 arranged on both sides of the shell 31 are matched with external circulating water to cool the cooling tank 32, thereby achieving the cooling of the high-temperature toxic slurry in the cooling tank 32 to reach a sampling temperature that is convenient for the staff to operate.

[0028] In this embodiment, operation holes 51 are provided on both the left and right sides of the sampling box 5. In actual use, the operation holes 51 facilitate the staff to reach into the sampling box 5 through the operation holes 51 to perform operations.

[0029] In this embodiment, a rubber glove 52 is provided at the operation hole 51. In actual use, the rubber glove 52 not only seals the sampling box 5 from the outside world, but also allows the operator to insert the hand into the sampling box 5 to operate. At the same time, the rubber glove 52 hangs freely when not in use and does not take up space. When sampling, the rubber glove 52 can be inserted into the sampling bottle 7 to facilitate direct screwing of the bottle cap.

[0030] In this embodiment, a suction hole 53 is provided on one side of the sampling box 5, and the suction hole 53 is connected to the suction device 4. In actual use, the suction device 4 is used to extract air and volatile gases from the sampling box 5, thereby achieving vacuum in the sampling box 5 and extracting them through the provided suction hole 53, while ensuring that the system pipeline is not blocked.

[0031] In this embodiment, the sampling box 5 includes a box door 54. In actual use, the box door 54 is used to install connected devices and facilitates the staff to open and close the sampling box 5.

[0032] In this embodiment, a viewing window 55 is embedded in the front surface of the box door 54. When in actual use, the viewing window 55 allows the staff to directly view the situation inside the sampling box 5.

[0033] In this embodiment, the front surface of the box door 54 is further embedded with an electric control button 56. In actual use, the electric control button 56 is used to control the opening and closing of the injection valve 1, the flushing valve 2, the cooler 3, the exhaust device 4 and the sampling valve 6.

[0034] In this embodiment, a controller is included. The injection valve 1, flushing valve 2, cooler 3, air extraction device 4, sampling valve 6, and electronic control button 56 are all electrically connected to the controller. In actual use, the controller is used to provide central control support for the connected devices. The controller can be a Siemens S7-400 series controller or an S7-1200 series controller, as long as it meets the requirements of use. Therefore, no further details are given.

[0035] All technical features in this embodiment can be freely combined according to actual needs. The above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention. The technologies, shapes, and structural parts not described in detail in this utility model are all well-known technologies.

[0036] The above embodiments are preferred implementation schemes of the present invention. In addition, other implementation schemes are also included. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A closed sampling system, characterized in that: The invention comprises an injection valve (1), a flushing valve (2), a cooler (3), a sampling assembly and an air extraction device (4); the input end of the injection valve (1) is connected to a process pipeline; the output ends of the injection valve (1) and the flushing valve (2) are both connected to the input end of the cooler (3); the output end of the cooler (3) is connected to the sampling assembly; and the air extraction device (4) is connected to the sampling assembly.

2. A closed sampling system according to claim 1, characterized in that: The sampling assembly comprises a sampling box (5), a sampling valve (6), a sampling bottle (7) and a supported drainage funnel (8), wherein the supported drainage funnel (8) is installed at the inner bottom of the sampling box (5), the output end of the supported drainage funnel (8) extends outward through the sampling box (5) and is arranged outside the sampling box (5), the sampling valve (6) is installed in the sampling box (5), the input end of the sampling valve (6) is connected to the output end of the cooler (3), the output end of the sampling valve (6) is located directly above the supported drainage funnel (8), the sampling bottle (7) can be placed on the top of the supported drainage funnel (8), and the sampling bottle (7) is located between the sampling valve (6) and the supported drainage funnel (8).

3. A closed sampling system according to claim 2, characterized in that: The cooler (3) comprises a shell (31) and a cooling trough (32). The cooling trough (32) is installed in the shell (31). The input end of the cooling trough (32) is communicated with the output ends of the injection valve (1) and the flushing valve (2), respectively. The output end of the cooling trough (32) is communicated with the input end of the sampling valve (6). A circulating water inlet (33) and a circulating water outlet (34) are respectively provided on the left and right sides of the shell (31). The circulating water inlet (33) is located above the circulating water outlet (34). The cooling trough (32) is located between the circulating water inlet (33) and the circulating water outlet (34). Circulating water flows in through the circulating water inlet (33) and flows out through the circulating water outlet (34) to cool the cooling trough (32).

4. A closed sampling system according to claim 2, characterized in that: Operation holes (51) are provided on both the left and right sides of the sampling box (5).

5. A closed sampling system according to claim 4, characterized in that: A rubber glove (52) is provided at the operating hole (51).

6. A closed sampling system according to claim 2, characterized in that: An air extraction hole (53) is provided on one side of the sampling box (5), and the air extraction hole (53) is communicated with the air extraction device (4).

7. A closed sampling system according to claim 2, characterized in that: The sampling box (5) comprises a box door (54).

8. A closed sampling system according to claim 7, characterized in that: A viewing window (55) is embedded in the front surface of the box door (54).

9. The closed sampling system according to claim 7, characterized in that: An electric control button (56) is also embedded on the front surface of the box door (54).

10. A closed sampling system according to claim 9, characterized in that: The device comprises a controller, wherein the injection valve (1), the flushing valve (2), the cooler (3), the air extraction device (4), the sampling valve (6) and the electric control button (56) are all electrically connected to the controller.

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