Instrument air buffering and filtering tank

Abstract

The utility model belongs to the technical field of natural gas treatment, and particularly relates to an instrument air buffering and filtering tank which comprises a tank body, an upper sealing head is arranged at the top of the tank body, a lower sealing head is arranged at the bottom, a gas inlet pipe is arranged on the side wall of the tank body close to the bottom, and a first partition plate is arranged in the tank body along the height direction; a second partition plate is arranged on the lower sealing head; a sealing connecting piece is arranged between the first partition plate and the second partition plate; a third partition plate is arranged between the side, adjacent to the air inlet pipe, of the first partition plate and the inner wall of the tank body, a vent hole is formed in the third partition plate, and a filter element is arranged at the position, corresponding to the vent hole, of the upper surface of the third partition plate. And the other end penetrates through the side wall close to the bottom of the tank body. Instrument air is conveyed to the tank body through the air inlet pipe, the instrument air is filtered through the filter element, the filtered instrument air is conveyed to the tank body through the air outlet pipe, and then the instrument air is stably and continuously conveyed out through the air outlet pipe, so that the cleanliness of the instrument air and the stability of output pressure are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas processing, in particular to an instrument air buffer filter tank. Background Art

[0002] Natural gas is a general term for a mixture of gases mainly composed of hydrocarbons that exist in underground rock reservoirs, including gases formed by various natural processes in the atmosphere, hydrosphere, and lithosphere (including oilfield gas, gas field gas, mud volcano gas, coalbed methane, and biogenic gas, etc.).

[0003] Instrument air is the air source used for instrument systems or equipment in industrial production processes. It is mainly used to provide power for pneumatic instruments. It is usually provided by air compressors or other air source equipment to provide compressed air that has been dried, filtered, and pressure-regulated. This compressed air has a certain pressure and flow rate to meet the working requirements of pneumatic instruments. The quality of instrument air has a crucial impact on the accuracy and reliability of pneumatic instruments. If the instrument air contains too much moisture, oil or impurities, it may cause the starting instrument to be blocked, malfunction or damaged.

[0004] Natural gas needs to go through a series of processing processes from collection to application. In the control systems of various reactors, separation towers and other equipment used in the processes of impurity separation, desulfurization, dehydration, demercuration, compression, liquefaction, etc., a large number of pneumatic control valves are used. The switching action and adjustment accuracy of these control valves all rely on stable and clean instrument air. Once there is a problem with the instrument air, such as insufficient pressure or impurities, it may cause the control valve to malfunction, thus affecting the stability and safety of the entire production process. Therefore, ensuring the supply quality of instrument air is an important part of maintaining the normal operation of industrial automation systems.

[0005] In view of the above problems, the utility model document proposes an instrument air buffer filter tank. Utility Model Content

[0006] The utility model provides an instrument wind buffer filter tank, which improves the cleanliness of the instrument wind and the stability of the pressure, thereby ensuring the normal operation of the pneumatic instrument.

[0007] The utility model provides the following technical solutions:

[0008] An instrument air buffer and filter tank, comprising a tank body, the top of the tank body is provided with an upper head, and the bottom is provided with a lower head. A gas inlet pipe is provided at a position near the bottom of the side wall of the tank body. A first partition is arranged inside the tank body, and the first partition is arranged along the height direction of the tank body; a second partition is provided on the lower head corresponding to the first partition, and a sealing connection member is arranged between the first partition and the second partition; a third partition is arranged between the side of the first partition adjacent to the gas inlet pipe and the inner wall of the tank body. Vent holes are provided on the third partition, and filter cores are arranged on the upper surface of the third partition corresponding to the vent holes. An air outlet pipe is arranged on the side wall of the tank body corresponding to the other side of the first partition. One end of the air outlet pipe is close to the top of the tank body, and the other end passes through the side wall of the tank body near the bottom.

[0009] Further, the sealing connection member includes a rectangular main body, and clamping grooves are provided on its relatively symmetric two side surfaces, and sealing gaskets are arranged on the inner walls of the clamping grooves.

[0010] Further, it also includes a fixing mechanism for fixing the filter core. The fixing mechanism includes a screw rod, a pressing plate and a mounting plate. One end of the filter core abuts against the upper surface of the third partition, and the other end is placed on the pressing plate. The mounting plate is arranged at a position corresponding to the through hole on the lower surface of the third partition. The screw rod penetrates through the mounting plate, the filter core and the pressing plate, and both ends of the screw rod are locked and fixed by lock nuts.

[0011] Further, the fixing mechanism also includes a limiting plate. The limiting plate is annular and is arranged at a position corresponding to the through hole on the upper surface of the third partition. One end of the filter core is clamped inside the limiting plate; the pressing plate is also provided with a positioning sleeve, and the top of the filter core is sleeved on the positioning sleeve, and the screw rod passes through the positioning sleeve.

[0012] Further, the air outlet pipe is of an "L" - shaped structure, the side wall in the vertical direction abuts against the inner side wall of the tank body, and the side wall in the horizontal direction penetrates through the side wall of the tank body.

[0013] Further, it also includes a locking member. The locking member is of a "U" - shaped structure. Its two ends penetrate through the side wall of the tank body and are fixed by lock nuts, and the side wall of the air outlet pipe is clamped inside the locking member.

[0014] Further, support legs are provided at a position near the bottom of the side wall of the tank body. The bottom of the support legs is provided with a mounting fixing plate with mounting holes, and a grounding plate is provided on the side.

[0015] Further, lifting lugs and vent pipes are provided on the upper head.

[0016] Further, a buffer baffle is provided on the inner side wall of the tank body corresponding to the gas inlet pipe.

[0017] In the present utility model, instrument air is conveyed to the tank body through an air inlet pipe, and the instrument air is filtered by a filter element. After filtration, the instrument air is on the tank body and then steadily and continuously conveyed out through an air outlet pipe, improving the cleanliness of the instrument air and the stability of the output pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is a schematic cross-sectional structure view of an instrument air buffer and filter tank provided by an embodiment of the present utility model;

[0019] Figure 2 FIG. is a schematic three-dimensional structure view of a sealing connection member in an instrument air buffer and filter tank provided by an embodiment of the present utility model.

[0020] REFERENCE SIGNS:

[0021] 1, tank body; 2, upper head; 3, lower head; 4, first partition; 5, second partition; 6, sealing connection member; 601, main body; 602, clamping groove; 603, sealing gasket; 7, third partition; 8, filter element; 9, pressing plate; 10, mounting plate; 11, air inlet pipe; 12, air outlet pipe; 13, limiting plate; 14, positioning sleeve; 15, buffer baffle; 16, support leg; 17, grounding plate; 18, mounting fixing plate; 19, mounting hole; 20, lifting lug; 21, vent pipe; 22, locking member; 23, screw; 24, ventilation hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following describes the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model.

[0023] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct communication or an indirect communication through an intermediate medium. Among them, "fixation" means that they are connected to each other and the relative position relationship after connection remains unchanged. The orientation terms mentioned in the embodiments of the present utility model, such as "inside", "outside", "top", "bottom", etc., are only references to the direction of the drawings. Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the embodiments of the present utility model.

[0024] In the embodiments of the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0025] In the embodiments of the present utility model, "and / or" merely describes the association relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the front and rear associated objects.

[0026] The reference to "an embodiment" or "some embodiments" etc. described in this specification means that a specific feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present utility model. Thus, statements such as "in an embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments" etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "comprise", "include", "have" and their variants all mean "include but not limited to", unless otherwise specifically emphasized in other ways.

[0027] Embodiment:

[0028] Referring to Figure 1 and Figure 2 As shown, an instrument air buffer and filter tank includes a tank body 1. The top of the tank body 1 is provided with an upper head 2, and the bottom is provided with a lower head 3. An air inlet pipe 11 is provided at a position near the bottom of the side wall of the tank body 1. A first partition 4 is provided inside the tank body 1, and the first partition 4 is arranged along the height direction of the tank body 1. A second partition 5 is provided on the lower head 3 corresponding to the position of the first partition 4. A sealing connector 6 is provided between the first partition 4 and the second partition 5. A third partition 7 is provided between the side of the first partition 4 adjacent to the air inlet pipe 11 and the inner wall of the tank body 1. An air vent 24 is formed on the third partition 7. A filter element 8 is provided on the upper surface of the third partition 7 corresponding to the position of the air vent 24. An air outlet pipe 12 is provided on the side wall of the tank body 1 corresponding to the other side of the first partition 4. One end of the air outlet pipe 12 is near the top of the tank body 1, and the other end passes through the side wall of the tank body 1 near the bottom.

[0029] The upper head 2 and the lower head 3 seal both ends of the tank body 1 to form an internal sealed space. The first partition 4 and the second partition 5 cooperate to divide the interior of the tank body 1 into two parts. The third partition 7 is located above the air inlet pipe 11, so that the instrument air entering from the air inlet pipe 11 passes through the ventilation holes 24 on the third partition 7. The position of the filter element 8 corresponds to the position of the ventilation holes 24, so that the instrument air passing through the ventilation holes 24 reaches the top of the tank body 1 after being filtered by the filter element 8 and then is output from the air outlet pipe 12.

[0030] The first partition 4 and the second partition 5 are connected by a sealing connector 6, which divides both the tank body 1 and the lower head 3 into two parts. The second partition 5 is arranged inside the lower head 3 to prevent the instrument air from reaching the air outlet pipe 12 from the position of the lower head 3 after entering the buffer tank without passing through the filter element 8, which affects the cleanliness of the instrument air and further affects the normal operation of the pneumatic control valve.

[0031] The instrument air passes through the tank body 1, which can stabilize the air pressure inside the tank body 1, making the air pressure of the instrument air stable. One end of the air outlet pipe 12 is close to the top of the tank body 1, and the other end passes through the side wall of the tank body 1 close to the bottom, so that the air pressure of the instrument air output from the tank body 1 is stable, thereby improving the accuracy of the pneumatic instrument control of the instrument air.

[0032] The sealing connector 6 includes a rectangular main body 601, and clamping grooves 602 are formed on its two opposite side surfaces. A sealing gasket 603 is arranged on the inner wall of the clamping grooves 602.

[0033] The clamping grooves 602 arranged on the two opposite side surfaces of the main body 601 respectively clamp the first partition 4 and the second partition 5, which is convenient for connecting the first partition 4 and the second partition 5. The sealing gasket 603 arranged in the clamping grooves 602 improves the sealing performance of the connection part, preventing the instrument air from leaking to the side of the air outlet pipe 12 from the connection part and affecting the cleanliness of the instrument air.

[0034] It further includes a fixing mechanism for fixing the filter element 8. The fixing mechanism includes a screw 23, a pressing plate 9 and a mounting plate 10. One end of the filter element 8 abuts against the upper surface of the third partition 7, and the other end is placed on the pressing plate 9. The mounting plate 10 is arranged at the position corresponding to the through hole on the lower surface of the third partition 7. The screw 23 passes through the mounting plate 10, the filter element 8 and the pressing plate 9, and both ends of the screw 23 are locked and fixed by lock nuts.

[0035] Both ends of the screw 23 are locked by lock nuts, thereby pressing the pressing plate 9 against the filter element 8, and at the same time pressing the mounting plate 10 against the third partition 7, thereby pressing and fixing the filter element 8 on the third partition 7.

[0036] The fixing mechanism further includes a limiting plate 13. The limiting plate 13 is annular and is arranged at the position corresponding to the through hole on the upper surface of the third partition plate 7. One end of the filter element 8 is clamped within the limiting plate 13; the pressing plate 9 is further provided with a positioning sleeve 14, and the top of the filter element 8 is sleeved on the positioning sleeve 14, and the screw rod 23 passes through the positioning sleeve 14.

[0037] Through the annular limiting plate 13, one end of the filter element 8 can be limited, preventing the position of the filter element 8 from skewing under the pressure of the pressing plate 9, resulting in a gap between the contact surface of the filter element 8 and the third partition plate 7, so that the instrument air directly enters the chamber where the air outlet pipe 12 is located without passing through the filter element 8 and is output from the air outlet pipe 12, affecting the cleanliness of the output instrument air, and further affecting the normal operation of the pneumatic instrument controlled by the instrument air.

[0038] The air outlet pipe 12 is of an "L" - shaped structure. Its vertical side wall abuts against the inner side wall of the tank body 1, and its horizontal side wall penetrates the side wall of the tank body 1.

[0039] Since one end of the air outlet pipe 12 is close to the top of the tank body 1 and the other end is close to the bottom of the tank body 1, the air outlet pipe 12 is relatively long. The vertical side wall abuts against the tank body 1, which can better install and position the air outlet pipe 12, improve the installation stability of the air outlet pipe 12, and is beneficial to the stability when the air outlet pipe 12 outputs instrument air. In addition, using a longer air outlet pipe 12 is also beneficial to the stability of the instrument air pressure, improving the accuracy of the pneumatic instrument controlled by the instrument air.

[0040] It further includes a locking member 22. The locking member 22 is of a "U" - shaped structure. Its two ends penetrate the side wall of the tank body 1 and are fixed by locking nuts. The side wall of the air outlet pipe 12 is clamped inside the locking member 22.

[0041] Clamping the air outlet pipe 12 inside the "U" - shaped locking member 22, and the two ends of the locking member 22 penetrate the side wall of the tank body 1 and are locked by locking nuts, so that the locking member 22 presses the air outlet pipe 12 against the inner wall of the tank body 1, which is convenient for installation and disassembly and can well position the tubular structure.

[0042] At the position of the side wall of the tank body 1 close to the bottom, there are support legs 16. The bottom of the support legs 16 is provided with an installation fixing plate 18 with installation holes 19, and a grounding plate 17 is provided on the side.

[0043] The entire buffer filter tank is supported by the support legs 16. The bottom installation fixing plate 18 is installed and fixed by anchor bolts, improving the stability of the overall installation structure while increasing the contact area with the bottom surface, dispersing the ground pressure, and preventing the ground from tilting due to pressure. The grounding plate 17 is connected to the ground through a grounding wire, which can timely discharge the static electricity generated by the equipment to the ground, avoid safety accidents caused by static electricity, and improve the safety of equipment use.

[0044] The upper head 2 is provided with a lifting lug 20 and a vent pipe 21.

[0045] The buffer filtration tank is lifted by the lifting lug 20, which facilitates the installation and movement of the buffer filtration tank; while the vent pipe 21 is used to discharge the gas in the tank body 1, reduce the internal pressure of the tank body 1, and prevent the internal pressure of the tank body 1 from being too high and affecting safety.

[0046] A buffer baffle 15 is provided on the inner side wall of the tank body 1 corresponding to the position of the inlet pipe 11.

[0047] The buffer baffle 15 blocks the instrument air entering the inside of the tank body 1, reduces the flow rate of the instrument air, avoids the instrument air impacting the inner wall of the tank body 1 to generate noise, and at the same time prevents the flow rate of the instrument air from being too fast, so that the instrument air quickly passes through the filter and cannot be fully filtered, affecting the cleanliness of the instrument air.

[0048] During use, the buffer filtration tank is lifted by the lifting lug 20 and moved to the use position. Then, the buffer filtration tank is fixed to the ground through the cooperation of the anchor bolts and the mounting holes 19 on the mounting plate 18, and a grounding wire is connected to the grounding plate 17. The instrument air is input into the inside of the tank body 1 from the inlet pipe 11. The instrument air reduces its flow rate through the buffer baffle 15, enters the filter element 8 through the through holes on the third partition plate 7, reaches the top of the tank body 1 after being filtered by the filter element 8, then enters the outlet pipe 12 from the top of the tank body 1, and is then output by the outlet pipe 12.

[0049] The cleanliness and air pressure stability of the instrument air are improved, the accuracy of the pneumatic instrument controlled by the instrument air is improved, and the stability and safety of the entire production process are ensured.

[0050] In actual use, a structural reinforcement plate is also provided at the position where the support leg 16 is arranged on the side of the tank body 1, and a structural reinforcement plate is also provided at the connection between the lifting lug 20 and the upper head 2. The force-bearing strength of the connection is improved through the structural reinforcement plate, thereby ensuring the structural stability of the tank body 1 and the upper head 2, avoiding local overstress and damage to the tank body 1 and the upper head 2, and improving the service life of the buffer filtration tank.

[0051] Multiple through holes and corresponding filter elements 8 are arranged on the third partition plate 7 to improve the filtration efficiency of the instrument air.

[0052] The outlet pipe 12 is fixed to the inner wall of the tank body 1 through a plurality of locking members 22, which improves the installation stability of the outlet pipe 12, and thereby ensures the stability of the air pressure of the instrument air output from the outlet pipe 12.

[0053] The utility model has a simple structure, convenient installation, and is suitable for popularization.

[0054] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model; without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. An instrument air buffer filter tank, characterized in that: It includes a tank body, an upper head is provided on the top of the tank body, a lower head is provided on the bottom, an air inlet pipe is provided on the side wall of the tank body near the bottom, a first partition is provided inside the tank body, and the first partition is arranged along the height direction of the tank body; a second partition is provided on the lower head at a position corresponding to the first partition, and a sealing connector is provided between the first partition and the second partition; a third partition is provided between one side of the first partition adjacent to the air inlet pipe and the inner wall of the tank body, and the third partition is located above the air inlet pipe, and an air vent is opened on the third partition, and a filter element is provided on the upper surface of the third partition at a position corresponding to the air vent, and an air outlet pipe is provided on the side wall of the tank body corresponding to the other side of the first partition, and one end of the air outlet pipe is close to the top of the tank body, and the other end passes through the side wall of the tank body close to the bottom.

2. The instrument air buffer filter tank according to claim 1, characterized in that: The sealing connector comprises a rectangular main body, two symmetrical sides of which are provided with clamping grooves, and inner walls of the clamping grooves are provided with sealing pads.

3. The instrument air buffer filter tank according to claim 1, characterized in that: It also includes a fixing mechanism for fixing the filter element, the fixing mechanism includes a screw, a pressure plate and a mounting plate, one end of the filter element rests on the upper surface of the third partition plate, and the other end is placed on the pressure plate, the mounting plate is arranged at a position corresponding to the through hole on the lower surface of the third partition plate, the screw passes through the mounting plate, the filter element and the pressure plate, and the two ends of the screw are locked and fixed by locking nuts.

4. The instrument air buffer filter tank according to claim 3, characterized in that: The fixing mechanism also includes a limiting plate, which is annular and is arranged at a position corresponding to the through hole on the upper surface of the third partition plate, and one end of the filter element is clamped in the limiting plate; the pressure plate is also provided with a positioning sleeve, the top of the filter element is sleeved on the positioning sleeve, and the screw passes through the positioning sleeve.

5. The instrument air buffer filter tank according to claim 1, characterized in that: The air outlet pipe is an "L"-shaped structure, with its vertical side wall against the inner wall of the tank body and its horizontal side wall penetrating the side wall of the tank body.

6. The instrument air buffer filter tank according to claim 1, characterized in that: It also includes a locking piece, which is a "U" structure, and its two ends penetrate the side wall of the tank body and are fixed by locking nuts, and the side wall of the air outlet pipe is clamped inside the locking piece.

7. The instrument air buffer filter tank according to claim 1, characterized in that: A support leg is provided at a position near the bottom of the side wall of the tank body, a mounting fixing plate with a mounting hole is provided at the bottom of the support leg, and a grounding plate is provided on the side.

8. The instrument air buffer filter tank according to claim 1, characterized in that: The upper cover is provided with a lifting lug and a vent pipe.

9. The instrument air buffer filter tank according to claim 1, characterized in that: A buffer baffle is arranged at a position of the inner wall of the tank body corresponding to the air inlet pipe.

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