Device for actively discharging pressure and stably analyzing gas path pressure

Abstract

The utility model relates to the technical field of infrared carbon flow analyzers, in particular to an active pressure discharge stable analysis gas circuit pressure device which comprises a shell, a valve body is arranged in the shell, a valve core is arranged above the valve body, a membrane is attached above the valve core, a compression spring is wound above the membrane, and a pressure sensor is arranged on the valve core. The upper portion of the compression spring is wound on the adjusting knob, an air inlet hole and an air outlet hole are formed in the two sides of the shell respectively, the upper portion of the shell is in threaded connection with a bidirectional bolt, and a pressure gauge mounting hole is formed in the rear portion of the shell. The shell is composed of two parts, the two parts are fixed through the two-way bolt, bolt loosening caused by vibration in the equipment operation process can be prevented, and internal parts can be conveniently replaced in the later period due to the split type structure.

Description

Technical Field

[0001] The utility model relates to the technical field of infrared carbon flow analyzers, and particularly relates to an active pressure relief and stable analysis gas path pressure device. Background Art

[0002] An infrared carbon flow analyzer is an instrument used to measure the carbon content or the concentration of carbon compounds in a gas. It works based on the principle of infrared absorption spectroscopy. When infrared light of a specific wavelength passes through a gas sample containing carbon compounds such as carbon monoxide, carbon dioxide, etc., these carbon compounds will absorb the infrared light of the specific wavelength. By measuring the intensity changes of the incident light and the transmitted light, the concentration of carbon compounds in the gas can be calculated. Infrared carbon flow analyzers are applied in many fields, such as environmental monitoring, measuring carbon emissions in waste gas, industrial process control, such as in industries like chemical engineering, iron and steel, combustion efficiency evaluation, and scientific research experiments, etc. Its advantages include fast measurement, high accuracy, good sensitivity, etc.

[0003] The inventor found the following problems in the process of realizing the present utility model: 1. The infrared carbon flow analyzer is responsible for collecting gas samples from the gas source to be measured and introducing them into the analysis system, which may include sampling probes, sampling tubes, filters, etc., to ensure that representative and clean gas samples are collected. In practical applications, the pressure of the gas source will fluctuate. Due to the inconsistency of the gas path pressure during each measurement, the measurement results of the same sample vary greatly, making it difficult to conduct data comparison and repeatability analysis; 2. Inside the gas path pressure device, by changing the compression degree of the spring or selecting springs with different stiffnesses, the elastic force of the spring interacts with the pressure in the gas path to help set and maintain a specific pressure range, and the pressure range and response characteristics in the gas path can be adjusted. If the gas path pressure device has an abnormal high pressure or exceeds the designed load range of the spring, it may cause the spring to deform excessively and be unable to return to its original state, or even break directly. The existing housing generally adopts an integral structure. When the spring inside the housing breaks, the internal spring cannot be replaced in time, and the entire device needs to be replaced, resulting in waste of resources. Summary of the Utility Model

[0004] The purpose of the present utility model is to provide an active pressure relief and stable analysis air circuit pressure device to solve the problem that the pressure of the gas source fluctuates, and the measurement results of the same sample vary greatly due to the inconsistent air circuit pressure during each measurement. To achieve the above object, the present utility model provides the following technical solution: An active pressure relief and stable analysis air circuit pressure device, including a housing, a valve body is provided inside the housing, a valve core is provided above the valve body, a diaphragm is attached above the valve core, a compression spring is wound above the diaphragm, and the compression spring is wound above an adjustment knob. Air inlet holes and air outlet holes are respectively provided on both sides of the housing. A two-way bolt is threadedly connected above the housing, and a pressure gauge mounting hole is opened at the rear of the housing;

[0005] Below the two-way bolt sequentially passes through a fixing piece and a nut. The nut is attached below the fixing piece, and a rotating handle is welded above the two-way bolt.

[0006] Further preferably, the housing is composed of upper and lower parts, and the upper and lower parts are fixed by a two-way bolt. Inside the upper part of the housing, there are an adjustment knob, a compression spring and a diaphragm. Inside the lower part of the housing, there are a valve core and a valve body. And below the nut of the adjustment knob and above the housing, there is a mounting bracket. The wall of the mounting bracket is provided with holes, and the external material of the housing is aluminum alloy material.

[0007] Further preferably, the outside of the diaphragm is composed of a circle of rings, and its material is titanium alloy. The inside of the diaphragm is a rubber circular film, which has a certain elasticity, and its material is nitrile rubber. And the diaphragm forms an elastic structure through the compression spring, and there is a layer of abutting piece below the rubber circular film.

[0008] Further preferably, the external threaded rod below the adjustment knob is consistent with the port diameter of the upper part of the housing in terms of thread.

[0009] Further preferably, the valve core moves upward and downward inside the valve body through the diaphragm. When the cylindrical end face of the valve core moves upward, it closely fits the lower end faces of the air inlet hole and the air outlet hole inside the valve body. On the contrary, when the valve core moves downward, it does not fit the lower end faces of the air inlet hole and the air outlet hole inside the valve body.

[0010] Further preferably, the air inlet hole and the air outlet hole are horizontally symmetrical on both sides of the housing, and a plug is contained inside the pressure gauge mounting hole at the rear of the valve body. The external structural dimensions of the plug are consistent with the dimensions of the pressure gauge mounting hole.

[0011] Further preferably, the outer wall of the bidirectional bolt is provided with a circle of forward threads and a circle of reverse threads, which are vertically arranged and distributed in sequence. The inner diameter of the fixing piece is consistent with the outer diameter of the bidirectional bolt, and the outer thread size of the bidirectional bolt is consistent with the inner thread size of the nut.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the present utility model, the infrared carbon-sulfur analyzer is provided with a stable analysis gas path assembly, which effectively improves the measurement accuracy. The stable gas path pressure can ensure the uniform transmission and detection of the sample gas, reduce the measurement deviation caused by pressure fluctuations, thereby significantly improving the accuracy of carbon and sulfur content determination, ensuring that the gas path conditions are consistent during each analysis, and making the multiple measurement results have better repeatability and comparability.

[0014] In the present utility model, the spring of the gas path pressure assembly is a consumable part, which can quickly open the device, directly touch the position where the spring is located, reduce the cumbersome steps during disassembly, thereby saving the time for spring replacement. The two-part composition facilitates disassembly, making it easier for the operator to access the spring, avoiding difficult operations in complex structures, and reducing the difficulty of replacing the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front view structural schematic diagram of the present utility model;

[0016] Figure 2 is a side view structural schematic diagram of the present utility model;

[0017] Figure 3 is a top view structural schematic diagram of the present utility model;

[0018] Figure 4 is an external structural schematic diagram of the bidirectional bolt of the present utility model.

[0019] In the figure: 1, housing; 2, air inlet hole; 3, bidirectional bolt; 301, rotating handle; 302, fixing piece; 303, nut; 4, adjusting knob; 5, compression spring; 6, diaphragm; 7, valve core; 8, valve body; 9, air outlet hole; 10, pressure gauge mounting hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer toFigures 1 to 4 , the present utility model provides a technical solution: an active pressure - discharging and stable - analyzing air - path pressure device, which includes a housing 1. Inside the housing 1, there is a valve body 8. Above the valve body 8, there is a valve core 7. Above the valve core 7, a diaphragm 6 is attached. Above the diaphragm 6, a compression spring 5 is wound. Above the compression spring 5, it is wound around an adjusting knob 4. On both sides of the housing 1, there are an air inlet 2 and an air outlet 9 respectively. Above the housing 1, a two - way bolt 3 is threadedly connected. At the rear of the housing 1, a pressure - gauge mounting hole 10 is provided;

[0022] Below the two - way bolt 3, it successively passes through a fixing piece 302 and a nut 303. Below the fixing piece 302, the nut 303 is attached. Above the two - way bolt 3, a rotating handle 301 is welded.

[0023] In this embodiment, as Figure 1 、 Figure 2 and Figure 3 shown, the housing 1 is composed of upper and lower parts, and the upper and lower parts are fixed by the two - way bolt 3. Inside the upper part of the housing 1, there are an adjusting knob 4, a compression spring 5 and a diaphragm 6. Inside the lower part of the housing 1, there are a valve core 7 and a valve body 8. And below the nut 303 of the adjusting knob 4 and above the housing 1, there is a mounting bracket. The wall of the mounting bracket is provided with holes. The external material of the housing 1 is aluminum alloy material; installing the complex internal components into the upper and lower parts respectively and then fixing them by the two - way bolt 3 simplifies the assembly process. During maintenance, the housing 1 can also be disassembled more conveniently to check, maintain and replace the internal components. When a certain part fails or is damaged, only the corresponding part needs to be replaced, rather than replacing the whole housing 1, which reduces the maintenance cost. For example, components such as the adjusting knob 4 and the compression spring 5 are located in the upper part, and the valve core 7 and the valve body 8 are located in the lower part. The split - type structure makes it easier to separately adjust and optimize the components in these different functional areas.

[0024] In this embodiment, as Figure 1 shown, the outside of the diaphragm 6 is composed of a circle of rings, and its material is titanium alloy. The inside of the diaphragm 6 is a rubber circular film, which has a certain elasticity and its material is nitrile rubber. And the diaphragm 6 forms an elastic structure through the compression spring 5. And below the rubber circular film, there is a layer of abutting piece; it separates different air - path areas, prevents gas leakage, ensures the air - path tightness and stability, for pressure sensing and transmission, it can sense the pressure change in the air - path. When the pressure changes, the diaphragm 6 will produce corresponding deformation. Since the inside is an elastic structure composed of the nitrile - rubber circular film with elasticity and the compression spring 5, it can buffer the pressure fluctuation, make the pressure change more stable. At the same time, it can also be adjusted to a certain extent according to the size of the pressure.

[0025] In this embodiment, as Figure 1 、 Figure 2and Figure 3 As shown in Figure 3 , the external threaded rod below the adjusting knob 4 is thread - consistent with the upper - part port diameter of the housing 1; the threaded rod of the adjusting knob 4 is consistent with the diameter of the housing 1, facilitating the rotation of the adjusting knob 4, causing the compression spring 5 to move downward. The compression spring 5 is connected to the diaphragm 6 below, causing the diaphragm 6 to move, facilitating adjustment.

[0026] In this embodiment, as Figure 1 、 Figure 2 and Figure 3 As shown in Figure 1 , Figure 2 , and Figure 3 , the valve core 7 moves upward and downward inside the valve body 8 through the diaphragm 6. When the cylindrical end face of the valve core 7 moves upward, it closely adheres to the lower end face of the air inlet hole 2 and the air outlet hole 9 inside the valve body 8. On the contrary, when the valve core 7 moves downward, it does not adhere to the lower end face of the air inlet hole 2 and the air outlet hole 9 inside the valve body 8; when the pressure in the gas path acts on the diaphragm 6, causing the diaphragm 6 to deform downward, it will drive the valve core 7 to move downward. At this time, the cylindrical end face of the valve core 7 does not adhere to the lower end face of the air inlet hole 2 and the air outlet hole 9 inside the valve body 8, and a passage is formed between the air inlet hole 2 and the air outlet hole 9, allowing gas to flow from the air inlet hole 2 to the air outlet hole 9, realizing the flow of gas. On the contrary, when the pressure in the gas path decreases or other factors cause the diaphragm 6 to rebound upward, it will push the valve core 7 to move upward, and the cylindrical end face of the valve core 7 moves upward and closely adheres to the lower end face of the air inlet hole 2 and the air outlet hole 9 inside the valve body 8, thereby blocking the connection between the air inlet hole 2 and the air outlet hole 9 and preventing the flow of gas. This design of controlling the on - off of the gas path through the up - and - down movement of the valve core 7 can achieve automatic adjustment according to the pressure change in the gas path to maintain the stability of the gas path pressure or achieve specific gas - path control functions.

[0027] In this embodiment, as Figure 1 、 Figure 2 and Figure 3 As shown in Figure 1 , Figure 2 , and Figure 3 , the air inlet hole 2 and the air outlet hole 9 are horizontally symmetric on both sides of the housing 1, and a plug is contained inside the pressure - gauge mounting hole 10 at the rear of the valve body 8. The external structural dimensions of the plug are consistent with the dimensions of the pressure - gauge mounting hole 10; the air inlet hole 2 and the air outlet hole 9 are provided on both sides of the housing 1, facilitating the internal adjustment of gas. When the pressure gauge is not installed, the plug can block the mounting hole, preventing gas from leaking from this hole, ensuring the airtightness and pressure stability of the gas path, preventing dust, impurities, or other pollutants from entering the mounting hole, and preventing them from affecting the measurement accuracy of the subsequent installed pressure gauge or entering the gas path to cause blockage or damage. A pressure gauge can be equipped for measurement to facilitate accurate adjustment of the internal pressure.

[0028] In this embodiment, as Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, the outer wall thread of the bidirectional bolt 3 is provided with a circle of forward threads and a circle of reverse threads, which are vertically arranged in sequence, and the internal diameter of the fixing piece 302 is consistent with the outer diameter of the bidirectional bolt 3, and the external thread size of the bidirectional bolt 3 is consistent with the internal thread size of the nut 303; the bidirectional bolt 3, the fixing piece 302 and the nut 303 are fixedly inserted into the upper and lower parts of the housing 1. A rotatable turning handle 301 is provided above the bidirectional bolt 3, which is convenient for manual twisting disassembly and fixation without tools, and the bidirectional bolt 3 can prevent loosening.

[0029] The usage method and advantages of the present utility model: When the active pressure discharge and stable analysis air circuit pressure device is in use, the working process is as follows:

[0030] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, first, gas enters the interior of the valve body 8 from the air inlet hole 2. When the pressure in the air circuit changes, it acts on the diaphragm 6. If the pressure increases, the diaphragm 6 is subjected to a downward pressure, compressing the compression spring 5 below. The compression spring 5 further pushes the valve core 7 downward. At this time, the cylindrical end face of the valve core 7 does not fit the lower end faces of the air inlet hole 2 and the air outlet hole 9 inside the valve body 8, and the gas can flow smoothly from the air inlet hole 2 to the air outlet hole 9. If the pressure decreases, the compression spring 5 rebounds, pushing the diaphragm 6 upward, thereby driving the valve core 7 upward, causing the cylindrical end face of the valve core 7 to move upward and closely fit the lower end faces of the air inlet hole 2 and the air outlet hole 9 inside the valve body 8, blocking the flow of gas, and playing a role in regulating and stabilizing the air circuit pressure. By rotating the adjustment knob 4, the pre-tightening force of the compression spring 5 can be changed, thereby adjusting the set value of the air circuit pressure. The bidirectional bolt 3 is used to fix and connect the upper and lower parts of the housing 1. By rotating the turning handle 301 to rotate the bidirectional bolt 3, it passes through the fixing piece 302 and the nut 303 to achieve fastening. The pressure gauge mounting hole 10 is used to mount a pressure gauge to monitor the pressure in the air circuit.

[0031] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An active pressure relief and stable analysis air pressure device for air circuit pressure, comprising a housing (1), characterized in that: Inside the housing (1), there is a valve body (8). Above the valve body (8), there is a valve core (7). Above the valve core (7), there is a diaphragm (6) in contact. Above the diaphragm (6), there is a compression spring (5) wound. Above the compression spring (5), it is wound around an adjustment knob (4). On both sides of the housing (1), there are an air inlet hole (2) and an air outlet hole (9) respectively. Above the housing (1), there is a two-way bolt (3) connected by threads. At the rear of the housing (1), there is a pressure gauge mounting hole (10); Below the two-way bolt (3), it passes through a fixing plate (302) and a nut (303) in sequence. Below the fixing plate (302), there is a nut (303) in contact. Above the two-way bolt (3), there is a rotating handle (301) welded.

2. The active pressure relief and stable analysis air pressure device according to claim 1, wherein: The housing (1) is composed of an upper part and a lower part. The upper and lower parts are fixed by a two-way bolt (3). Inside the upper part of the housing (1), there are an adjustment knob (4), a compression spring (5) and a diaphragm (6). Inside the lower part of the housing (1), there are a valve core (7) and a valve body (8). And below the nut (303) of the adjustment knob (4) and above the housing (1), there is a mounting bracket. There are holes on the wall of the mounting bracket. The external material of the housing (1) is aluminum alloy material.

3. The active pressure relief and stable analysis air circuit pressure device according to claim 1, wherein: The outside of the diaphragm (6) is composed of a circle of rings. Its material is titanium alloy. The inside of the diaphragm (6) is a rubber circular film, which has a certain elasticity. Its material is nitrile rubber. And the diaphragm (6) forms an elastic structure through the compression spring (5). And below the rubber circular film, there is a layer of abutting piece.

4. An active pressure relief and stable analysis air circuit pressure device according to claim 1, characterized in that: The external threaded rod below the adjustment knob (4) is consistent with the port diameter of the upper part of the housing (1) in terms of thread.

5. An active pressure relief and stable analysis air pressure device according to claim 1, characterized in that: The valve core (7) moves up and down inside the valve body (8) through the diaphragm (6). When the cylindrical end face of the valve core (7) moves upward, it closely adheres to the lower end faces of the air inlet hole (2) and the air outlet hole (9) inside the valve body (8). On the contrary, when the valve core (7) moves downward, it does not adhere to the lower end faces of the air inlet hole (2) and the air outlet hole (9) inside the valve body (8).

6. The active pressure relief and stable analysis air pressure device according to claim 1, characterized in that: On both sides of the housing (1), the air inlet hole (2) and the air outlet hole (9) are horizontally symmetrical. And inside the pressure gauge mounting hole (10) at the rear of the valve body (8), there is a plug. The external structure size of the plug is consistent with the size of the pressure gauge mounting hole (10).

7. An active pressure relief and stable analysis air pressure device according to claim 1, characterized in that: On the wall of the two-way bolt (3), there is a circle of positive threads and a circle of reverse threads, which are arranged vertically in sequence. And the internal diameter of the fixing plate (302) is consistent with the external diameter of the two-way bolt (3). And the external thread size of the two-way bolt (3) is consistent with the internal thread size of the nut (303).

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