An explosion-proof sampling probe convenient to disassemble and maintain

Abstract

The utility model provides a kind of anti-explosion sampling probe convenient to disassemble and maintain, including probe body, end cap, main chamber is equipped in probe body, sample gas discharge passage, the one end of probe body is provided with end cap mounting hole, end cap is detachably connected in end cap mounting hole, end cap is provided with filter element;End cap is provided with transition passage;When end cap is installed in end cap mounting hole, filter element is deeply into main chamber;Filter element separates main chamber into filter element inner chamber and filter element outer chamber, and sample gas discharge passage is communicated with filter element inner chamber by transition passage.The utility model in, by filter element is integrated on detachable end cap, and end cap is directly connected in the mounting hole of probe body, without removing other pipeline or structure of probe body.When needing to replace filter element, only need to disassemble end cap to directly take out filter element, greatly improve disassembly convenience, effectively solve the problem of difficult filter element disassembly in traditional technology.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof sampling probe technology, and in particular to an explosion-proof sampling probe that is easy to disassemble and maintain. Background Technology

[0002] Gas sampling probes are used to connect process technology and analysis systems. They are typically installed outside process piping (such as flues, chimneys, and exhaust stacks) to extract sample gases (such as exhaust gases produced after combustion), perform preliminary pretreatment, and then deliver them to the gas analysis system. Explosion-proof sampling probes are gas sampling probes that comply with explosion-proof specifications and can be used in flammable and explosive conditions. They are a type of gas sampling probe, and the relevant standards for them are higher than those for conventional gas sampling probes.

[0003] To ensure the accuracy and reliability of the analytical results, the explosion-proof sampling probe must remove most particulate matter during the pretreatment process and must not form condensate; particulate matter can contaminate the analytical instrument and affect measurement accuracy. Therefore, a filter element must be installed inside the sampling probe to remove particulate matter from the sample gas.

[0004] Since the filter element is a consumable component in the explosion-proof probe structure and requires regular maintenance and replacement, its disassembly and maintainability are paramount to the overall disassembly and maintainability of the probe. However, the disassembly and replacement of filter elements in most explosion-proof sampling probes on the market is relatively cumbersome, usually requiring the removal of related pipelines before the filter element can be taken out, making the entire process time-consuming and labor-intensive. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies and provide an explosion-proof sampling probe that is easy to disassemble and maintain.

[0006] The purpose of this utility model is achieved through the following technical solution: an explosion-proof sampling probe that is easy to disassemble and maintain, comprising a probe body and an end cap. The probe body has a main chamber and a sample gas discharge channel. One end of the probe body is provided with an end cap mounting hole, and the end cap is detachably connected to the end cap mounting hole. A filter element is provided on the end cap. A transition channel is provided on the end cap. When the end cap is installed in the end cap mounting hole, the filter element extends into the main chamber. The filter element divides the main chamber into an inner filter element chamber and an outer filter element chamber. The sample gas discharge channel is connected to the inner filter element chamber through the transition channel.

[0007] Preferably, the side of the end cap is provided with external threads, and the sidewalls of the end cap mounting hole are provided with internal threads, so that the end cap is threadedly connected in the end cap mounting hole.

[0008] Preferably, a first sealing component is provided between one end of the end cap and the bottom of the end cap mounting hole, and a second sealing component is provided between the end cap and the side wall of the end cap mounting hole; the first sealing component is used to isolate the sample gas discharge channel from the main chamber, and the second sealing component is used to isolate the sample gas discharge channel from the outside air.

[0009] Preferably, the first sealing component is a first sealing ring fitted on the side of the end cap, and the second sealing component is a second sealing ring fitted on the end face of the end cap.

[0010] Preferably, the probe body is provided with an explosion-proof cover, and an explosion-proof chamber is formed between the explosion-proof cover and the probe body. An explosion-proof chamber outlet is provided on the explosion-proof cover. A heater mounting slot is provided inside the probe body, and the heater mounting slot is connected to the explosion-proof chamber.

[0011] Preferably, the probe body is provided with an external backflush channel, one end of which is connected to the outer chamber of the filter element in the main chamber, and the other end of which penetrates the outer surface of the probe body.

[0012] Preferably, the end cap is provided with a rotating handle.

[0013] The beneficial effects of this invention are as follows: By integrating the filter element onto a detachable end cap, which is directly connected to the mounting hole of the probe body, there is no need to remove other pipes or structures from the probe body. When the filter element needs to be replaced, only the end cap needs to be removed to take it out, greatly improving the convenience of disassembly and effectively solving the problem of difficult filter element disassembly in traditional technologies. This structure of the present invention will significantly shorten maintenance time and reduce labor costs, making it particularly suitable for industrial scenarios that require frequent filter element replacement. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the present invention.

[0015] Figure 2 This is a top view of the present invention.

[0016] In the diagram: 1. Probe body, 2. End cap, 3. Explosion-proof cover, 4. Filter element, 5. Sample gas discharge channel, 6. External backflush channel, 7. Heater mounting slot, 8. Explosion-proof chamber, 9. Explosion-proof chamber outlet, 10. First sealing component, 11. Second sealing component, 12. Main chamber, 13. Transition channel, 14. Rotary handle. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0018] like Figures 1 to 2 As shown, an explosion-proof sampling probe that is easy to disassemble and maintain includes a probe body 1 and an end cap 2. The probe body 1 has a main chamber 12 and a sample gas discharge channel 5. One end of the probe body 1 is provided with an end cap 2 mounting hole, and the end cap 2 is detachably connected to the end cap 2 mounting hole. A filter element 4 is provided on the end cap 2. A transition channel 13 is provided on the end cap 2. When the end cap 2 is installed in the end cap 2 mounting hole, the filter element 4 extends into the main chamber 12. The filter element 4 divides the main chamber 12 into an inner filter element chamber and an outer filter element chamber. The sample gas discharge channel 5 is connected to the inner filter element chamber through the transition channel 13.

[0019] In this invention, the filter element 4 is integrated onto a detachable end cap 2, and the end cap 2 is directly connected to the mounting hole of the probe body 1, eliminating the need to remove other pipes or structures from the probe body 1. When the filter element 4 needs to be replaced, it can be removed simply by removing the end cap 2, greatly improving the ease of disassembly and effectively solving the problem of difficult disassembly of the filter element 4 in traditional technologies. This structure of the present invention will significantly shorten maintenance time and reduce labor costs, making it particularly suitable for industrial scenarios where frequent replacement of the filter element 4 is required.

[0020] The main chamber 12 is connected to the process pipeline. The filter element 4 divides the main chamber 12 into an outer filter element chamber and an inner filter element chamber. After the gas in the process pipeline enters the main chamber 12, the gas needs to be filtered by the filter element 4 before entering the inner filter element chamber. After filtration, the sample gas is discharged outward through the transition channel 13 and the sample gas discharge channel 5. This process ensures that the particulate matter in the sample gas is effectively intercepted by the filter element 4, avoiding the influence of particulate matter in the sample gas on the accuracy of the analysis results, and avoiding the contamination of the instrument by particulate matter.

[0021] The sample gas discharge channel 5 can also serve as an internal backflushing channel. When maintaining the filter element 4, cleaning gas can be introduced into the filter element through the sample gas discharge channel 5. The gas can pass through the sample gas discharge channel 5 and the transition channel 13 in sequence and enter the inner chamber of the filter element. Then it passes through the filter element 4 and enters the outer chamber of the filter element. During the process of the cleaning gas passing through the filter element 4, the particulate matter attached to the outer surface of the filter element 4 can be blown away, thereby maintaining the filter element 4, avoiding the accumulation of particulate matter and clogging of the filter element 4, and improving the service life of the filter element 4.

[0022] The end cap 2 has external threads on its side and internal threads between the sidewalls of the mounting hole of the end cap 2. The end cap 2 is threadedly connected to the mounting hole of the end cap 2. The end cap 2 is connected to the probe body 1 by the threaded connection. This connection method has high connection strength, reliable connection, and is easy to install and disassemble.

[0023] To facilitate the installation and removal of the end cap 2, a rotating handle 14 is provided on the end cap 2. By providing a rotating handle 14 on the end cap 2, the end cap 2 can be easily installed and removed by rotating the handle 14.

[0024] A first sealing component 10 is provided between one end of the end cap 2 and the bottom of the mounting hole of the end cap 2, and a second sealing component 11 is provided between the end cap 2 and the side wall of the mounting hole of the end cap 2. The first sealing component 10 is used to isolate the sample gas discharge channel 5 from the main chamber 12, and the second sealing component 11 is used to isolate the sample gas discharge channel 5 from the outside air. In this utility model, the first sealing component 10 is provided to prevent unfiltered gas in the main chamber 12 from directly mixing into the filtered sample gas in the sample gas discharge channel 5 through the gap between the components when collecting sample gas, thereby preventing the sample gas from being contaminated during the discharge process through the sample gas discharge channel 5. Similarly, by providing the second sealing component 11, it is possible to prevent outside air from mixing into the filtered sample gas, thereby preventing the sample gas from being contaminated.

[0025] The first sealing component 10 is a first sealing ring embedded on the side of the end cap 2, and the second sealing component 11 is a second sealing ring embedded on the end face of the end cap 2.

[0026] Furthermore, the probe body 1 is provided with an explosion-proof cover 3, and an explosion-proof chamber 8 is formed between the explosion-proof cover and the probe body 1. An explosion-proof chamber outlet 9 is provided on the explosion-proof cover. A heater mounting groove 7 is provided inside the probe body 1, and the heater mounting groove 7 is connected to the explosion-proof chamber 8.

[0027] During the pretreatment process, the sampling probe needs to remove condensate from the sample gas, as the presence of condensate can distort the measurement values. To avoid condensate in the sample gas, this invention includes a heater mounting slot 7 inside the probe body 1. A heater can be installed in the heater mounting slot 7 to heat the gas, thereby preventing condensation. The explosion-proof chamber 8 is used for the arrangement and protection of electrical components such as temperature sensors and temperature switches. The explosion-proof chamber outlet 9, located on the explosion-proof cover, allows cables to pass through.

[0028] In this embodiment, the explosion-proof chamber 8 is an annular chamber located at one end of the probe body 1 near the end cap 2.

[0029] The probe body 1 is provided with an external backflush channel 6. One end of the external backflush channel 6 is connected to the outer chamber of the filter element inside the inner chamber, and the other end of the external backflush channel 6 penetrates the outer surface of the probe body 1. The external backflush channel 6 is used for the maintenance of the filter element 4. Cleaning gas can be introduced into the filter element through the external backflush channel 6. The gas enters the outer chamber of the filter element through the external backflush channel 6, and then passes through the filter element 4 to enter the inner chamber of the filter element. During the process of the cleaning gas passing through the filter element 4, it can blow away the particulate matter attached to the inner surface of the filter element 4, thereby maintaining the filter element 4, preventing the accumulation of particulate matter and clogging of the filter element 4, and improving the service life of the filter element 4.

[0030] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. An explosion-proof sampling probe that is easy to disassemble and maintain, characterized in that, The device includes a probe body and an end cap. The probe body contains a main chamber and a sample gas exhaust channel. One end of the probe body has an end cap mounting hole, and the end cap is detachably connected to the end cap mounting hole. A filter element is installed on the end cap. A transition channel is provided on the end cap. When the end cap is installed in the end cap mounting hole, the filter element extends into the main chamber. The filter element divides the main chamber into an inner filter element chamber and an outer filter element chamber. The sample gas exhaust channel is connected to the inner filter element chamber through the transition channel.

2. The explosion-proof sampling probe that is easy to disassemble and maintain according to claim 1, characterized in that, The end cap has an external thread on its side and an internal thread between the sidewalls of the end cap mounting hole. The end cap is threadedly connected to the end cap mounting hole.

3. The explosion-proof sampling probe that is easy to disassemble and maintain according to claim 1, characterized in that, A first sealing component is provided between one end of the end cap and the bottom of the end cap mounting hole, and a second sealing component is provided between the end cap and the side wall of the end cap mounting hole; the first sealing component is used to isolate the sample gas discharge channel from the main chamber, and the second sealing component is used to isolate the sample gas discharge channel from the outside air.

4. The explosion-proof sampling probe that is easy to disassemble and maintain according to claim 3, characterized in that, The first sealing component is a first sealing ring embedded on the side of the end cap, and the second sealing component is a second sealing ring embedded on the end face of the end cap.

5. The explosion-proof sampling probe that is easy to disassemble and maintain according to claim 1, characterized in that, The probe body is provided with an explosion-proof cover, and an explosion-proof chamber is formed between the explosion-proof cover and the probe body. An explosion-proof chamber outlet is provided on the explosion-proof cover. A heater mounting slot is provided inside the probe body, and the heater mounting slot is connected to the explosion-proof chamber.

6. The explosion-proof sampling probe that is easy to disassemble and maintain according to claim 1, characterized in that, The probe body is provided with an external backflush channel. One end of the external backflush channel is connected to the outer chamber of the filter element in the main chamber, and the other end of the external backflush channel penetrates the outer surface of the probe body.

7. The explosion-proof sampling probe that is easy to disassemble and maintain according to claim 1, characterized in that, The end cap is equipped with a rotating handle.

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