Buffer gas tank

Abstract

The utility model discloses a buffer gas tank, which belongs to the technical field of equipment for preparing nitrogen from air and comprises a tank body, a gas inlet pipe and a gas outlet pipe, the gas inlet pipe and the gas outlet pipe are transversely embedded on the tank body, and the gas inlet pipe is positioned below the gas outlet pipe. The buffering air tank further comprises an oil-water separation part which is detachably installed in the tank body and used for preliminarily purifying compressed air and a plurality of buffering parts which are arranged at the bottom of the oil-water separation part and used for buffering the impact force of the compressed air, and the buffering parts are distributed in a multi-layer mode in the vertical direction. According to the utility model, the plurality of buffer pieces are overlapped in the tank body and close to the upper part of the air inlet pipe, so that flexible collision is formed between compressed air and the buffer pieces, the spring pieces are used for buffering the impact force of the compressed air, and the impact force of the compressed air is further buffered by matching with the pressure relief effect of the primary sieve plate; the noise and the shaking degree of the buffer gas tank are greatly reduced, and the influence of shaking on the connection firmness of a connecting part detachably installed on the tank body is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air nitrogen production equipment, in particular to a buffer gas tank. Background Art

[0002] The buffer gas tank is an important part of the gas purification process in the nitrogen generator. The compressed air first enters the buffer tank and then enters the primary filter. Since the compressed air entering the buffer tank contains a lot of solid impurities, moisture and oil, it is necessary to perform preliminary separation and purification in the buffer tank to prevent these impurities from clogging the primary filter. When the existing buffer gas tank is in use, it can perform preliminary purification on the compressed air and reduce the impact of impurities on the primary filter. However, since the impact force of the compressed gas entering the buffer gas tank is strong and the impact force of the compressed air often changes, the existing buffer gas tank has a poor buffering effect on the impact force of the compressed air, which can easily cause the buffer gas tank to have loud noise and more violent shaking. The more violent shaking can also easily cause the detachable connection parts on the buffer gas tank to loosen, which will seriously affect the normal operation of the nitrogen generator.

[0003] The existing patent application number: 201720688310.6 discloses a nitrogen buffer gas tank with filtering and purification functions. The device uses a volute-type spiral air inlet pipe to separate solid impurities and part of the water-oil mixture by centrifugal force when the air flows inside it. When the gas goes up, it collides with the oil-water separation baffle and condenses, and the mixed gas is separated into gas and liquid again, thereby improving the gas-liquid separation effect of the gas. In the above-mentioned prior art, the oil-water separation baffle and the filter layer in the device are rigidly impacted with the compressed air, and the above-mentioned technical problems still exist. Utility Model Content

[0004] The utility model aims to provide a buffer gas tank to solve the problem that the buffer gas tank has poor impact buffering effect on compressed air and easily causes loud noise and violent vibration in the buffer gas tank as mentioned in the background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a buffer gas tank, comprising a tank body and an air inlet pipe and an air outlet pipe transversely embedded on the tank body, wherein the air inlet pipe is located below the air outlet pipe, and the buffer gas tank further comprises:

[0007] An oil-water separator detachably mounted in the tank body for preliminary purification of compressed air.

[0008] A plurality of buffer members are arranged at the bottom of the oil-water separator and are used to buffer the impact force of the compressed air. The plurality of buffer members are vertically distributed in multiple layers.

[0009] Two sieves are fixed in the tank body and used for secondary oil-water separation of compressed air.

[0010] The oil-water separation element comprises:

[0011] A support sleeve is arranged in the tank body.

[0012] A limiting ring is fixed on the inner wall of the tank body, and one side of the limiting ring is plugged into the limiting ring arranged on the supporting sleeve.

[0013] A screen cover is threadedly connected to a cover groove arranged on the top of the support sleeve.

[0014] An oil-water separation pad is sleeved with the oil-water separation groove arranged at the bottom of the cover groove.

[0015] The buffer member comprises:

[0016] A plurality of spring sheets are hinged to the bottom of the support sleeve and are used to buffer the impact force of compressed air.

[0017] A primary screening plate is hinged to the bottom end of the spring sheet.

[0018] Furthermore, an arc-shaped sealing door is provided on one side of the tank body, and half of the limiting ring is located on the arc-shaped sealing door.

[0019] Furthermore, the diameter of the primary screening plate matches the inner diameter of the tank body, and the primary screening plate and the screen cover are evenly provided with screen holes for air circulation.

[0020] Furthermore, the primary screen plate is located between the air outlet of the air inlet pipe and the bottom of the support sleeve, and the bottom of the support sleeve is also evenly provided with screen holes for air circulation.

[0021] Furthermore, the buffer gas tank also includes a plurality of through holes arranged on the inner wall of the tank body, and an annular oblique bottom groove for penetrating all the through holes is provided between the plurality of through holes, and a discharge pipe for connecting the annular oblique bottom groove and the outside of the tank body is inserted on the tank body.

[0022] Furthermore, the second sieve element comprises:

[0023] A transverse partition is fixed in the tank body, and the transverse partition is located between the air outlet pipe and the oil-water separator.

[0024] A plurality of exhaust pipes are interspersed on the transverse partition.

[0025] A conical tube is fixed to the bottom of the diaphragm, the conical tube is communicated with the exhaust pipe, and the conical tube and the exhaust pipe are in a coaxial relationship.

[0026] Furthermore, the buffer gas tank also includes an oil-water discharge pipe vertically embedded in the bottom of the tank body, and the buffer member and the two screen members divide the interior of the tank body into an oil-water collection chamber, two filter chambers and an exhaust chamber from bottom to top.

[0027] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0028] 1. The utility model forms a flexible collision between the compressed air and the buffer member by stacking and arranging a plurality of buffer members near the air inlet pipe in the tank body, and uses the spring sheet to buffer the impact force of the compressed air, and cooperates with the pressure relief effect of the primary screen plate to further buffer the impact force of the compressed air, greatly reducing the noise and vibration of the buffer gas tank, and reducing the influence of the vibration on the connection firmness of the detachable connection parts on the tank body;

[0029] 2. The utility model can preliminarily separate the solid impurities and oil and water carried in the compressed air through the arrangement of the primary screening plate and the oil-water separation pad. When the mixed droplets formed by the oil, water and solid impurities condense to a certain size, they can converge to the bottom of the oil-water collection chamber under the action of gravity, which is convenient for concentrated discharge during cleaning, thereby improving the cleaning rate. In conjunction with the tapered tube with a small bottom and a large top arranged at the bottom of the diaphragm, gravity is used again to precipitate the oil and water in the gas, thereby further improving the gas purification effect, reducing the speed of the airflow flowing into the exhaust chamber, buffering the impact force of the gas discharge, and reducing the impact of the gas impact force on subsequent equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is an axonometric drawing of the utility model;

[0031] Figure 2 It is a cross-sectional view of the utility model;

[0032] Figure 3 for Figure 2 The main view of

[0033] Figure 4 for Figure 3 Enlarged view of part A.

[0034] In the figure: 1. tank body; 2. air inlet pipe; 3. air outlet pipe; 4. oil-water separator; 41. support sleeve; 42. ring groove; 43. limit ring; 44. oil-water separator groove; 45. oil-water separator pad; 46. cover groove; 47. screen cover; 5. second screen element; 51. diaphragm; 52. exhaust pipe; 53. conical pipe; 6. oil-water collecting chamber; 7. second filter chamber; 8. exhaust chamber; 9. annular inclined bottom groove; 10. perforation; 11. drain pipe; 12. oil-water drain pipe; 13. buffer; 131. spring sheet; 132. primary screen plate. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0036] like Figures 1 to 4 As shown, a buffer gas tank includes a tank body 1 and an air inlet pipe 2 and an air outlet pipe 3 transversely embedded on the tank body 1, and the air inlet pipe 2 is located below the air outlet pipe 3. The buffer gas tank also includes:

[0037] An oil-water separator 4 can be detachably mounted in the tank body 1 for preliminary purification of compressed air.

[0038] A plurality of buffer members 13 are arranged at the bottom of the oil-water separator 4 for buffering the impact force of the compressed air. The plurality of buffer members 13 are distributed in multiple layers vertically.

[0039] The second sieve element 5 is fixed in the tank body 1 and is used for secondary oil-water separation of the compressed air.

[0040] The oil-water separator 4 comprises:

[0041] A support sleeve 41 is arranged in the tank body 1 .

[0042] A limiting ring 43 is fixed on the inner wall of the tank body 1 , and one side of the limiting ring 43 is plugged into the limiting ring 43 provided on the supporting sleeve 41 .

[0043] A screen cover 47 is threadedly connected to a cover groove 46 disposed on the top of the support sleeve 41 .

[0044] The oil-water separation pad 45 is sleeved with the oil-water separation groove 44 disposed at the bottom of the cover groove 46 .

[0045] The buffer member 13 comprises:

[0046] A plurality of spring sheets 131 are hinged to the bottom of the support sleeve 41 for buffering the impact force of the compressed air.

[0047] The primary screening plate 132 is hinged to the bottom end of the spring sheet 131 .

[0048] By stacking and arranging a plurality of buffer members 13 above the air inlet pipe 2 in the tank body 1, compressed air is discharged into the tank body 1 through the air inlet pipe 2, and the airflow collides with the primary screen plate 132 at the bottom layer. Under the impact force of the compressed air, the spring sheet 131 undergoes elastic bending deformation, thereby buffering the impact force and preventing excessive transmission of the impact force to the tank body 1. A flexible collision can be formed between the compressed air and the buffer member 13, and the spring sheet 131 is used to buffer the impact force of the compressed air. Through the arrangement of the primary screen plate 132 and the oil-water separation pad 45, solid impurities and oil and water carried in the compressed air can be preliminarily separated. When the mixed droplets formed by the oil, water and solid impurities condense to a certain size, they can converge to the bottom of the oil-water collection chamber under the action of gravity, so as to facilitate centralized discharge during cleaning and improve the cleaning rate.

[0049] In this embodiment, an arc-shaped sealing door is provided on one side of the tank body 1, half of the limiting ring 43 is located on the arc-shaped sealing door, and the other half of the limiting ring 43 is located on the inner wall of the tank body 1. When the oil-water separator 4 and the buffer 13 need to be cleaned later, the arc-shaped sealing door can be opened to disengage half of the limiting ring 43 thereon from the ring groove 42, and then the support sleeve 41 can be pulled horizontally to disassemble and remove the oil-water separator 4 and the buffer 13 for easy cleaning and replacement of the oil-water separator pad 45.

[0050] In this embodiment, the diameter of the primary screen plate 132 matches the inner diameter of the tank body 1, and the primary screen plate 132 and the screen cover 47 are evenly provided with sieve holes for air circulation, and the sieve holes on the primary screen plate 132 cooperate with the pressure relief and filtering effects to further buffer the impact force of the compressed air, greatly reduce the noise and vibration generated by the tank body 1, and reduce the influence of the vibration on the connection firmness of the detachable connecting parts on the tank body 1.

[0051] In this embodiment, the primary screen plate 132 is located between the air outlet of the air inlet pipe 2 and the bottom of the support sleeve 41 , and the bottom of the support sleeve 41 is also evenly provided with screen holes for air circulation.

[0052] In this embodiment, the buffer gas tank also includes a plurality of through holes 10 arranged on the inner wall of the tank body 1, and an annular oblique bottom groove 9 for penetrating all the through holes 10 is arranged between the plurality of through holes 10, and a discharge pipe 11 for connecting the annular oblique bottom groove 9 and the outside of the tank body 1 is inserted on the tank body 1. The airflow passes through the filtering sedimentation of the primary sieve plate, the oil-water separation pad 45 and the second sieve element 5, and most of the oil, water and solid impurities in the airflow can be separated. However, a very small amount of oil and water will remain in the air passing through the second sieve element 5. As the amount of air flowing between the air outlet pipe 3 and the second sieve element 5 increases, the accumulated oil and water will gather and condense on the second sieve element 5. The gathered and condensed oil and water will gather to the port of the discharge pipe 11 through the perforations 10 and the annular oblique bottom groove 9, so as to be discharged through the discharge pipe 11, thereby preventing more oil and water from gathering on the second sieve element 5 and flowing back to the inside of the second sieve element 5, affecting the subsequent air purification effect and pass rate.

[0053] In this embodiment, the second sieve element 5 includes:

[0054] A transverse partition 51 is fixed inside the tank body 1 and is located between the air outlet pipe 3 and the oil-water separator 4. The top of the transverse partition 51 is flush with the bottom edge of the perforation 10 so that the oil and water gathered and condensed on the transverse partition 51 can be discharged smoothly.

[0055] A plurality of exhaust pipes 52 are inserted through the transverse partition plate 51 .

[0056] The conical tube 53 is fixed to the bottom of the diaphragm 51 , and is communicated with the exhaust pipe 52 , and the conical tube 53 and the exhaust pipe 52 are in a coaxial relationship.

[0057] By setting a conical tube 53 with a smaller bottom and a larger top at the bottom of the diaphragm 51, the airflow is gathered and stayed under the diaphragm 51 for a certain period of time before passing through the diaphragm 51. In this process, as the airflow gathers more and more, the remaining oil and water in the airflow will precipitate and condense under the action of gravity, further improving the gas purification effect.

[0058] In this embodiment, the buffer gas tank also includes an oil-water discharge pipe 12 vertically embedded in the bottom of the tank body 1. The buffer member 13 and the two screen members 5 divide the interior of the tank body 1 into an oil-water collecting chamber 6, two filter chambers 7 and an exhaust chamber 8 from bottom to top. The setting of the tapered tube 53 can reduce the speed of the airflow into the exhaust chamber 8, the impact force of the buffer gas discharge, and the influence of the gas impact force on subsequent equipment. In addition, through the setting of the primary screen plate 132 and the oil-water separation pad 45, the solid impurities and oil and water carried in the compressed air can be preliminarily separated. When the mixed droplets formed by the oil, water and solid impurities condense to a certain size, they can converge to the bottom of the oil-water collecting chamber 6 under the action of gravity, which is convenient for centralized discharge through the oil-water discharge pipe 12 during cleaning, thereby improving the cleaning rate.

[0059] The above description is only the preferred embodiment of the utility model, and the parts not described in the utility model can be implemented by adopting or drawing on existing technologies. Of course, the above description is not a limitation of the utility model, and the utility model is not limited to the above examples. The changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the utility model should also fall within the protection scope of the utility model.

Claims

1. A buffer gas tank, comprising a tank body (1) and an air inlet pipe (2) and an air outlet pipe (3) transversely mounted on the tank body (1), wherein the air inlet pipe (2) is located below the air outlet pipe (3), and characterized in that: The buffer gas tank also includes: An oil-water separator (4) detachably mounted in the tank (1) for preliminary purification of compressed air; A plurality of buffer members (13) disposed at the bottom of the oil-water separator (4) for buffering the impact force of compressed air, wherein the plurality of buffer members (13) are distributed in multiple layers vertically; A second sieve element (5) fixed in the tank body (1) for secondary oil-water separation of compressed air; The oil-water separation element (4) comprises: A support sleeve (41) disposed inside the tank body (1); A limiting ring (43) fixed on the inner wall of the tank body (1), one side of the limiting ring (43) being plugged into a limiting ring (43) provided on the supporting sleeve (41); A screen cover (47) threadedly connected to a cover groove (46) provided on the top of the support sleeve (41); An oil-water separation pad (45) sleeved with the oil-water separation groove (44) provided at the bottom of the cover groove (46); The buffer member (13) comprises: A plurality of spring sheets (131) hinged to the bottom of the support sleeve (41) for buffering the impact force of compressed air; A primary screening plate (132) is hinged to the bottom end of the spring sheet (131).

2. The buffer gas tank according to claim 1, characterized in that: An arc-shaped sealing door is provided on one side of the tank body (1), and half of the limiting ring (43) is located on the arc-shaped sealing door.

3. The buffer gas tank according to claim 2, characterized in that: The diameter of the primary screening plate (132) matches the inner diameter of the tank body (1), and screening holes for air circulation are evenly arranged on the primary screening plate (132) and the screening cover (47).

4. The buffer gas tank according to claim 3, characterized in that: The primary screening plate (132) is located between the air outlet of the air inlet pipe (2) and the bottom of the support sleeve (41), and the bottom of the support sleeve (41) is also evenly provided with screening holes for air circulation.

5. The buffer gas tank according to claim 4, characterized in that: The buffer gas tank further comprises a plurality of through holes (10) arranged on the inner wall of the tank body (1), an annular oblique bottom groove (9) for penetrating all the through holes (10) is arranged between the plurality of the through holes (10), and a discharge pipe (11) for connecting the annular oblique bottom groove (9) and the outside of the tank body (1) is inserted through the tank body (1).

6. The buffer gas tank according to claim 5, characterized in that: The second sieve element (5) comprises: A transverse partition (51) fixed inside the tank body (1), the transverse partition (51) being located between the air outlet pipe (3) and the oil-water separator (4); A plurality of exhaust pipes (52) inserted through the transverse partition (51); A conical tube (53) is fixed to the bottom of the transverse partition (51), the conical tube (53) is connected to the exhaust pipe (52), and the conical tube (53) and the exhaust pipe (52) are in a coaxial relationship.

7. The buffer gas tank according to claim 6, characterized in that: The buffer gas tank further comprises an oil-water discharge pipe (12) vertically embedded in the bottom of the tank body (1), and the buffer member (13) and the two sieve members (5) divide the interior of the tank body (1) from bottom to top into an oil-water collection chamber (6), two filter chambers (7) and an exhaust chamber (8).

Images