Roots flowmeter with protective structure for natural gas detection

Abstract

The utility model discloses a rotameter with protective structure for natural gas detection, include: dustproof protection box, the inside installation of dustproof protection box is used for detecting natural gas's rotameter body, still include: the inside rear side fixed of dustproof protection box has the dehumidification box, and the upper installation of dehumidification box has the feeding pipe, the front side integration of dehumidification box is provided with first fixed plate, and the longitudinal section of first fixed plate is porous and is the structure, the rear side of first fixed plate is closely combined with the water -lock moisturizing paper, and dehumidification box and water -lock moisturizing paper card slot connection, the inside left and right sides of dustproof protection box all are installed with anti -scald protection cover, anti -scald protection cover is distributed symmetrically up and down, and the inside installation of anti -scald protection cover has electric heating pipe. This rotameter with protective structure for natural gas detection can guarantee the humidity and temperature of rotameter working environment, avoid rotameter because humidity is too high or temperature is too low and influence its sensitivity.

Description

Technical Field

[0001] This utility model relates to the field of natural gas detection technology, specifically a Roots flow meter for natural gas detection with a protective structure. Background Technology

[0002] Natural gas is a clean and efficient energy source, mainly used as fuel and in the manufacture of chemicals. To prevent leaks and ensure safety, Roots flow meters are used for natural gas detection. Roots flow meters are instruments that measure flow by rotating a rotor in a fluid. They can accurately measure the volumetric flow rate of liquids or gases. Their working principle is based on fixed volume measurement of mechanical displacement. Due to their high-precision measurement, wide applicability, structural advantages, and reliability, they are one of the most widely used volumetric instruments in industry. They are widely used in gas station oil metering, chemical plant raw material distribution, food industry syrups, city gas gate stations, industrial gas boilers, and gas filling stations. There are various types of Roots flow meters for natural gas detection on the market.

[0003] Chinese patent CN221376751U, published on July 19, 2024, discloses a Roots flow meter for detecting natural gas. The meter includes a protective box with a first spring fixedly mounted inside, and a movable block fixedly mounted below the first spring. A movable pipe is connected to the lower outer end of the movable block. A fixed plate is engaged with the inner side of the movable pipe, and the Roots flow meter body is fixedly mounted inside the fixed plate. A fixing structure, including a second spring, a limiting block, and a fixing rod, is connected to the outer side of the fixed plate. The fixing block is fixedly mounted on the front outer side of the protective box, and a movable rod is connected to the outer side of the fixing block. An installation rod is mounted on the middle side of the movable rod, and a connecting plate is connected to the rear side of the installation rod. A sealing block is fixedly mounted on the rear side of the connecting plate. This Roots flow meter for detecting natural gas facilitates protection, fixation, and maintenance of the Roots flow meter.

[0004] Chinese patent CN218238950U, published on January 6, 2023, discloses a Roots flow meter for detecting natural gas. The meter includes a cover plate, a connecting pipe, a dustproof protective housing, a connecting plate, a vertical plate, a spring, a snap-fit ​​plate, a snap-fit ​​hook, and a Roots flow meter body. The Roots flow meter body is positioned inside the dustproof protective housing, and the cover plate is closed. Pulling the snap-fit ​​hook stretches the spring, inserting one end of the hook into the snap-fit ​​groove. The spring engages the snap-fit ​​hook... Tightening the hook will tighten the snap-fit ​​hook against the snap-fit ​​plate, thus pressing the cover plate against the front of the dustproof protective box. Through the cooperation of the dustproof protective box and the cover plate, the Roots flow meter body is surrounded inside, preventing the Roots flow meter body from being directly exposed to the outside, thereby reducing the risk of the Roots flow meter body being damaged by bumps and knocks. At the same time, it greatly reduces the risk of dust and impurities adhering to the Roots flow meter body and causing pollution. Desiccant is placed in the desiccant placement tank to absorb the moisture that enters the dustproof protective box.

[0005] However, the above technical solutions still have some drawbacks in actual use. For example, the flow meter has high requirements for humidity and temperature in its working environment. The flow meter is easily affected by excessive humidity or low temperature, which can cause the flow meter to fail to work properly. Therefore, we propose a Roots flow meter for natural gas detection with a protective structure to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to provide a Roots flow meter for natural gas detection with a protective structure, in order to solve the problem mentioned in the background art that the current Roots flow meter for natural gas detection has high requirements for humidity and temperature in its working environment, and the flow meter is easily affected by excessive humidity or low temperature, resulting in the flow meter being unable to be used normally.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a Roots flow meter for natural gas detection with a protective structure, comprising: a dustproof protective box, wherein a flow meter body for detecting natural gas is installed inside the dustproof protective box, and further comprising:

[0008] The dustproof protective box has a dehumidification box fixed inside the rear side, and a feeding pipe is installed above the dehumidification box. The front side of the dehumidification box has an integrally formed first fixing plate, and the longitudinal section of the first fixing plate has a porous structure. The rear side of the first fixing plate is tightly attached with a water-locking and moisturizing paper, and the dehumidification box and the water-locking and moisturizing paper are connected by a slot.

[0009] The dustproof protective box has anti-scalding protective covers installed on both the left and right sides inside. The anti-scalding protective covers are symmetrically distributed vertically, and electric heating tubes are installed inside the anti-scalding protective covers.

[0010] Preferably, the feeding tube is symmetrically fixed on the dustproof protective box and the dehumidification box, and the feeding tube protrudes from the top of the dustproof protective box.

[0011] Preferably, a second fixing plate is installed inside the lower part of the dehumidification box, and a sewage storage box is fixed below the dehumidification box, with a valve for cleaning provided at the bottom of the sewage storage box.

[0012] Preferably, the anti-scalding protective cover has an integrated magnetic strip on the side away from the flow meter body, and the magnetic strip is magnetically connected to the dustproof protective box, and the dustproof protective box is made of iron.

[0013] Preferably, the anti-scalding protective cover has an adjustment handle fixed on the side near the flow meter body, and the longitudinal section of the anti-scalding protective cover has a porous structure.

[0014] Preferably, the electric heating tube is installed on the left and right sides inside the dustproof protective box, and a connecting cable is installed above the electric heating tube, with the connecting cable passing through the top of the dustproof protective box.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the natural gas detection Roots flow meter with protective structure can ensure the humidity and temperature of the flow meter's working environment, avoid the flow meter's sensitivity being affected by excessive humidity or low temperature, and ensure the normal use of the flow meter.

[0016] 1. It is equipped with a dehumidification box, a first fixing plate and a wastewater storage box. Dehumidifying granules are poured into the dehumidification box. The first fixing plate is integrated on the front side of the dehumidification box. Moisture enters the dehumidification box through the first fixing plate. The wastewater storage box is fixed at the bottom of the dehumidification box. After being converted into water, it is concentrated in the wastewater storage box, which can ensure the humidity of the working environment of the flow meter. The back side of the first fixing plate is tightly attached with water-locking and moisture-retaining paper to prevent moisture back seepage.

[0017] 2. Equipped with electric heating elements, connecting cables, and anti-scalding protective covers, the electric heating elements are symmetrically distributed on the left and right sides. The anti-scalding protective covers are connected to the outer slots of the electric heating elements. The connecting cables are installed above the electric heating elements, supplying power to the electric heating elements to heat them up and increase the temperature inside the dustproof protection box. This prevents the flow meter from being too cold and affecting its sensitivity, ensuring the normal operation of the flow meter.

[0018] 3. It is equipped with a dustproof protective box, a magnetic strip, and an adjustment handle. The adjustment handle is fixed to the inside of the anti-scalding protective cover, and the magnetic strip is fixed to the outside of the anti-scalding protective cover. The magnetic strip and the dustproof protective box are magnetically connected. Pulling the adjustment handle will detach the anti-scalding protective cover from the dustproof protective box, thereby adjusting the position of the anti-scalding protective cover. Removing the anti-scalding protective cover allows for the inspection and maintenance of the electric heating element. The operation is simple and quick. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure connecting the dustproof protective box and the electric heating tube of this utility model;

[0021] Figure 3 This is a schematic diagram of the overall structure of the dehumidification mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the overall structure of the dehumidification box and the first fixing plate of this utility model;

[0023] Figure 5 This is a schematic diagram of the overall structure of the insulation mechanism of this utility model.

[0024] In the diagram: 1. Dustproof protective box; 2. Flow meter body; 3. Dehumidification box; 4. First fixing plate; 5. Feeding pipe; 6. Second fixing plate; 7. Water-locking and moisturizing paper; 8. Wastewater storage box; 9. Anti-scalding protective cover; 10. Magnetic strip; 11. Electric heating element; 12. Connecting cable; 13. Adjustment handle. Detailed Implementation

[0025] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 This utility model provides a technical solution: a Roots flow meter for natural gas detection with a protective structure, comprising: a dustproof protective box 1, inside which a flow meter body 2 for detecting natural gas is installed; a dehumidifying box 3 is fixed to the rear side of the dustproof protective box 1, and a feeding pipe 5 is installed above the dehumidifying box 3; a first fixing plate 4 is integrally provided on the front side of the dehumidifying box 3, and the longitudinal section of the first fixing plate 4 has a porous structure; a water-locking and moisturizing paper 7 is tightly attached to the rear side of the first fixing plate 4, and the dehumidifying box 3 and the water-locking and moisturizing paper 7 are connected by a slot; and anti-scalding protective covers 9 are installed on both the left and right sides of the interior of the dustproof protective box 1, the anti-scalding protective covers 9 are symmetrically distributed vertically, and an electric heating tube 11 is installed inside the anti-scalding protective cover 9.

[0027] As attached Figure 1 As shown, the natural gas pipeline is connected to the flow meter body 2, and the dust protection box 1 is closed. The dust protection box 1 protects the flow meter body 2 and prevents dust from falling on the flow meter body 2 or from being damaged by bumps.

[0028] Example 1;

[0029] Existing Roots flow meters for natural gas detection are susceptible to humidity, leading to reduced accuracy. To address this technical issue, this implementation example is attached. Figure 2 Appendix Figure 3 and attached Figure 4 As shown, a dehumidifying box 3 is fixed to the rear side of the interior of the dustproof protective box 1, and a feeding pipe 5 is installed on the top of the dehumidifying box 3. The feeding pipe 5 is symmetrically fixed on the dustproof protective box 1 and the dehumidifying box 3. When the feeding pipe 5 is opened, and the feeding pipe 5 protrudes from the top of the dustproof protective box 1, dehumidifying particles, such as calcium chloride, are poured into the dehumidifying box 3 from the feeding pipe 5. A second fixing plate 6 is installed at the bottom of the interior of the dehumidifying box 3. The second fixing plate 6 supports the dehumidifying particles. The dehumidifying particles absorb moisture from the air through physical adsorption. When the moisture in the air comes into contact with the dehumidifying particles, the porous structure on the surface of the particles attracts and captures water molecules, thereby reducing the humidity of the surrounding environment.

[0030] The dehumidifying particles fall onto the second fixed plate 6, and then the feeding pipe 5 is covered. The front side of the dehumidifying box 3 is integrally provided with the first fixed plate 4, and the longitudinal section of the first fixed plate 4 has a porous structure. The moisture in the dustproof protection box 1 enters the dehumidifying box 3 through the first fixed plate 4 and is converted into water by the dehumidifying particles in the dehumidifying box 3. The bottom of the dehumidifying box 3 is fixed with a sewage storage box 8, and the water is concentrated in the sewage storage box 8. The back side of the first fixed plate 4 is tightly attached with a water-locking and moisturizing paper 7, and the dehumidifying box 3 and the water-locking and moisturizing paper 7 are connected by a slot. The water-locking and moisturizing paper 7 has a porous structure or fiber mesh. The porous structure and fiber mesh can intercept moisture and prevent moisture from seeping back into the dehumidifying box 3. When it is necessary to clean the sewage storage box 8, a valve for cleaning is provided at the bottom of the sewage storage box 8. Simply open the valve at the bottom of the sewage storage box 8.

[0031] Example 2;

[0032] The accuracy of existing Roots flow meters used for natural gas detection is affected by low temperatures. To solve this technical problem, this embodiment is illustrated in the appendix. Figure 1 Appendix Figure 2 and attached Figure 5As shown, the electric heating element 11 is installed on the left and right sides inside the dustproof protection box 1. A connecting cable 12 is installed above the electric heating element 11, passing through the top of the dustproof protection box 1. When the temperature is too low, the power supply connected to the connecting cable 12 is turned on, causing the electric heating element 11 to work. The electric heating element 11 heats the air inside the dustproof protection box 1, preventing the flow meter body 2 from malfunctioning due to low temperature, and facilitating the heating and regeneration of dehumidifying particles to restore its dehumidification function. The anti-scalding protective cover 9 is connected to the outside of the electric heating element 11 through a slot. The anti-scalding protective cover 9 provides protection for the electric heating element 11. 1. The heat shield 9 serves as a shield to prevent hands from touching the electric heating element 11 during routine maintenance of the flow meter body 2, thus preventing burns to operators. The heat shield 9 has an integrated magnetic strip 10 on the side away from the flow meter body 2. The magnetic strip 10 is magnetically connected to the dustproof protection box 1 to fix the heat shield 9 to the dustproof protection box 1. The heat shield 9 has an adjustment handle 13 fixed on the side closer to the flow meter body 2. Pulling the adjustment handle 13 outward will release the magnetic strip 10 from the dustproof protection box 1, making it easy to remove the heat shield 9 for inspection and maintenance of the electric heating element 11.

[0033] This is the entire working process of the Roots flow meter for natural gas detection with a protective structure. Any content not described in detail in this specification is prior art known to those skilled in the art.

[0034] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A Roots flow meter for natural gas detection with a protective structure, comprising: A dustproof protective box (1), wherein a flow meter body (2) for detecting natural gas is installed inside the dustproof protective box (1), characterized in that it further includes: The dustproof protective box (1) has a dehumidifying box (3) fixed inside the rear side, and a feeding pipe (5) is installed above the dehumidifying box (3). The front side of the dehumidifying box (3) is integrally provided with a first fixing plate (4), and the longitudinal section of the first fixing plate (4) is a porous structure. The rear side of the first fixing plate (4) is tightly attached with a water-locking and moisturizing paper (7), and the dehumidifying box (3) and the water-locking and moisturizing paper (7) are connected by a slot. The dustproof protective box (1) is equipped with anti-scalding protective covers (9) on both the left and right sides inside. The anti-scalding protective covers (9) are symmetrically distributed up and down, and an electric heating tube (11) is installed inside the anti-scalding protective cover (9).

2. The Roots flow meter for natural gas detection with a protective structure according to claim 1, characterized in that: The feeding pipe (5) is symmetrically fixed on the dustproof protection box (1) and the dehumidification box (3), and the feeding pipe (5) protrudes above the dustproof protection box (1).

3. A Roots flow meter with a protective structure for natural gas detection according to claim 1, characterized in that: A second fixing plate (6) is installed inside the lower part of the dehumidification box (3), and a sewage storage box (8) is fixed below the dehumidification box (3). A valve for cleaning is provided at the bottom of the sewage storage box (8).

4. A Roots flow meter with a protective structure for natural gas detection according to claim 1, characterized in that: The anti-scalding protective cover (9) has an integrated magnetic strip (10) on the side away from the flow meter body (2), and the magnetic strip (10) and the dustproof protective box (1) are magnetically connected, and the dustproof protective box (1) is made of iron.

5. A Roots flow meter with a protective structure for natural gas detection according to claim 4, characterized in that: The anti-scalding protective cover (9) has an adjustment handle (13) fixed on the side near the flow meter body (2), and the longitudinal section of the anti-scalding protective cover (9) has a porous structure.

6. A Roots flow meter for natural gas detection with a protective structure according to claim 1, characterized in that: The electric heating tube (11) is installed on the left and right sides inside the dustproof protection box (1), and a connecting cable (12) is installed above the electric heating tube (11), and the connecting cable (12) runs through the top of the dustproof protection box (1).

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