A gas-liquid separation device

Abstract

The utility model provides a kind of gas-liquid separation device, including jar body, gas outlet pipe and water outlet pipe are respectively arranged in the upper and lower ends of jar body, and input pipe is arranged in the position of middle part;Separation unit, separation unit includes the separation barrel of being arranged in the lower part of inside of jar body, spiral groove is equipped in separation barrel, one end of input pipe is tangent to spiral groove in jar body, and separation barrel is used to realize gas-liquid separation;Filter unit, filter unit includes the flow baffle of being arranged in the upper of separation barrel, and the demisting element of being arranged in the upper of flow baffle, and flow baffle and demisting element are used to filter the moisture carried in ascending gas;By input pipe and separation barrel spiral groove tangent, let fluid rotate and flow into along spiral path, both avoid direct impact to produce water mist, and preliminary gas-liquid separation is realized by centrifugal force, and liquid amount is reduced from source;Separation barrel can also guide liquid phase to slowly settle along wall surface, avoid high-speed impact water surface to cause splashing;Solve the problem of gas phase liquid overproof, low separation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of gas-liquid separation equipment technology, and in particular to a gas-liquid separation device. Background Technology

[0002] The gas-liquid separator is a core component of the calibration device for gas-liquid two-phase flow meters, and its separation effect directly determines the measurement accuracy of the calibration device. In calibration tests, the gas-liquid mixture after the flow meter needs to be accurately separated by the separator—the gas phase must be free of entrained droplets, and the liquid phase must be free of entrained bubbles, in order to ensure the accuracy of the flow measurement data.

[0003] In existing devices, the mixed-phase fluid inlet pipe is often suspended inside the separator. Under high flow conditions, the fluid velocity inside the pipe increases dramatically (typically exceeding 3 m / s), significantly increasing the kinetic energy of the water. This causes the fluid, after exiting the inlet pipe, to directly impact the inner wall of the separator, breaking up into a large number of fine water droplets with a particle size of less than 10 μm. These water droplets are lightweight and have high buoyancy, easily flowing with the rising gas phase and difficult to separate through natural sedimentation. These water droplets are then carried away by the rising gas phase again, resulting in an excessive amount of liquid carried by the gas phase after separation. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a gas-liquid separation device to solve the problems of excessive liquid carryover in the gas phase and low separation efficiency in the existing gas-liquid separation device under high flow conditions.

[0005] According to an embodiment of the present invention, a gas-liquid separation device includes a tank, with an outlet pipe and a water outlet pipe respectively provided at the upper and lower ends of the tank, and an input pipe provided at the middle position. The separation unit includes a separation barrel located at the lower inner side of the tank body. The separation barrel is provided with a spiral groove. One end of the input pipe located inside the tank body is tangent to the spiral groove. The separation barrel is used to achieve gas-liquid separation. The filtration unit includes a baffle plate located above the separation tank and a demister located above the baffle plate. The baffle plate and the demister are used to filter out moisture carried in the rising gas.

[0006] Compared with existing technologies, this invention has the following advantages: by having the inlet pipe tangent to the spiral groove of the separation tank, the fluid is allowed to flow in along the spiral path, avoiding direct impact that generates water mist, and using centrifugal force to achieve preliminary gas-liquid separation, reducing the amount of liquid carried over from the source; the separation tank can also guide the liquid phase to slowly settle along the wall surface, avoiding high-speed impact on the water surface that causes splashing, and eliminating secondary liquid carryover; in addition, the baffle plate and demister above the separation tank intercept the fine droplets remaining in the rising gas phase step by step, further reducing the amount of liquid carried over, thereby solving the problems of excessive liquid carryover in the gas phase and low separation efficiency.

[0007] Preferably, the inner cavity of the separation barrel is conical, and the spiral groove extends along its conical inner wall surface.

[0008] Preferably, an installation ring is provided inside the tank, the installation ring is located above the separation tank, and a baffle is provided on the installation ring.

[0009] Preferably, the baffle is inverted conical in shape, and its interior forms a cavity for water to adhere to.

[0010] Preferably, the diameter of the baffle is smaller than the diameter of the tank body to form a channel for the water vapor to rise.

[0011] Preferably, the demisting component includes multiple sets of filter plates stacked inside the tank, with a gap of 2cm to 3cm between adjacent filter plates, and multiple sets of through holes are provided on each filter plate.

[0012] Preferably, the through holes on adjacent filter plates are staggered.

[0013] Preferably, a support is provided on the outside of the tank, and a protective ring is provided on the support. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model; Figure 2 This is an exploded structural diagram of an embodiment of the present invention; Figure 3 This is a schematic diagram of the internal structure of the tank in one embodiment of the present invention.

[0015] The reference numerals in the accompanying drawings include: 10. Tank body; 11. Gas outlet pipe; 12. Water outlet pipe; 13. Input pipe; 14. Channel; 20. Bracket; 21. Protective ring; 30. Filter plate; 31. Through hole; 40. Baffle plate; 41. Mounting ring; 50. Separation tank; 51. Spiral groove. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0017] like Figures 1 to 3As shown in the figure, this utility model embodiment proposes a gas-liquid separation device, which includes a tank 10, with an outlet pipe 11 and a water outlet pipe 12 respectively provided at the upper and lower ends of the tank 10, and an input pipe 13 provided in the middle position; a separation unit, including a separation barrel 50 located in the lower inner side of the tank 10, with a spiral groove 51 provided in the separation barrel 50, and one end of the input pipe 13 located in the tank 10 being tangent to the spiral groove 51. The separation barrel 50 is used to realize gas-liquid separation; the input pipe 13 is tangent to the spiral groove 51 of the separation barrel 50, and the mixed-phase fluid flows along the spiral groove 51 in a rotating manner, avoiding direct impact on the inner wall. Even at a large flow rate, the amount of water mist generated can be suppressed, reducing the amount of liquid carried by the gas phase from the source; the spiral path of the spiral groove 51 can also guide the fluid to form centrifugal force, initially realizing gas-liquid separation (the liquid phase slides down the tank wall, and the gas phase rises along the center of the tank), reducing the total amount of water mist that needs to be treated subsequently.

[0018] The filtration unit includes a baffle plate 40 positioned above the separation tank 50 and a demister positioned above the baffle plate 40. The baffle plate 40 and the demister are used to filter out moisture carried in the rising gas. The baffle plate 40, located above the separation tank 50, directly intercepts larger droplets in the rising gas phase. The droplets adhere to the surface of the baffle plate 40 and drip down the wall, completing the first stage of filtration. The demister, located above the baffle plate 40, further intercepts smaller droplets, allowing the fine droplets to be intercepted by the edge of the through-hole 31, achieving a second stage of filtration. The two stages of filtration work synergistically to meet the high-precision requirements for gas phase cleanliness in the gas-liquid two-phase flow meter calibration device.

[0019] like Figure 3 As shown, the inner cavity of the separation barrel 50 is conical, and the spiral groove 51 extends along its conical inner wall surface.

[0020] The inclined wall of the conical inner cavity can guide the liquid phase after initial separation to slide down the wall under the action of gravity, avoiding liquid retention in the tank; while the spiral groove 51 extending along the conical inner wall can guide the mixed fluid to rotate and flow to generate centrifugal force, enhance the separation of gas and liquid density difference, and with the help of the inclined angle of the cone, allow the separated liquid phase to slide to the bottom of the tank more quickly along the direction of the spiral groove 51 and be discharged. At the same time, it can avoid separation disorder caused by messy paths of fluid under high flow rate, thus improving the separation speed and stability overall.

[0021] like Figure 2 and Figure 3 As shown, a mounting ring 41 is provided inside the tank 10, and the mounting ring 41 is located above the separation tank 50. The baffle plate 40 is disposed on the mounting ring 41. The core function of the mounting ring 41 is to provide stable support for the baffle plate 40. Its position above the separation tank 50 allows the baffle plate 40 to accurately receive the gas phase rising from the separation tank 50, ensuring that the gas phase must be processed by the baffle plate 40.

[0022] like Figure 3As shown, the baffle 40 is inverted cone-shaped, and its interior forms a cavity for water to adhere to.

[0023] The inverted cone-shaped baffle plate 40 design can, on the one hand, increase the contact area with the gas phase, making it easier for droplets carried in the gas phase to collide and adhere to the plate wall; on the other hand, the inclined plate wall can guide the adhered droplets to flow away from the center; through the internal water supply and adhesion cavity, these converging droplets are guided to drip directly back to the bottom of the tank 10, further improving the cleanliness of gas phase separation.

[0024] like Figure 3 As shown, the diameter of the baffle plate 40 is smaller than the diameter of the tank body 10, so as to form a channel 14 for the water vapor to rise.

[0025] With the channel 14 in place, the baffle 40 can effectively intercept the droplets carried in the rising gas phase without completely blocking the gas phase flow. The gas phase, after preliminary treatment by the baffle 40, can smoothly enter the subsequent demister through the channel 14 to complete deep liquid removal. At the same time, the existence of the channel 14 provides space for water vapor to rise, ensuring that interception and flow do not interfere with each other, making the separation process continuous and efficient.

[0026] like Figure 2 As shown, the demisting component includes multiple sets of filter plates 30 stacked inside the tank 10, with a gap of 2cm to 3cm between adjacent filter plates 30, and multiple sets of through holes 31 are provided on each filter plate 30.

[0027] Multiple overlapping filter plates 30 can form a multi-stage interception, capturing fine droplets remaining in the gas phase more thoroughly than a single plate; the 2cm to 3cm gap will not cause gas phase flow to be obstructed or pressurized due to being too narrow, nor will it allow droplets to pass through easily due to being too wide; while the through holes 31 on the filter plates 30 allow the gas phase to pass through normally, and use the inertia of the droplets to make them hit the edge of the holes and adhere, so as to achieve air passage without blocking liquid and interception without blocking gas. The three work together to allow the demister to deeply filter out the droplets remaining in the gas phase, while ensuring smooth airflow and further reducing the amount of liquid carried in the separated gas phase.

[0028] like Figure 2 As shown, the through holes 31 on two adjacent filter plates 30 are staggered.

[0029] The staggered distribution of through holes 31 on adjacent filter plates 30 can forcibly change the flow path of the rising gas phase. The gas phase must pass through the upper through hole 31 and bypass the non-through hole 31 area of ​​the lower filter plate 30 before entering the lower through hole 31. During this process, the fine droplets carried by the gas phase will be intercepted due to inertial impact on the wall of the filter plate 30, which significantly increases the contact opportunity between the droplets and the filter plate 30, further improving the capture efficiency of small droplets and enhancing the demisting effect.

[0030] like Figure 2As shown, a support 20 is provided on the outside of the tank 10, and a protective ring 21 is provided on the support 20. The support 20 serves as a basic support, which can stably fix the tank 10 vertically, preventing the tank 10 from tipping over due to its own weight or internal fluid impact (such as centrifugal force generated by the rotation of the spiral groove 51 under high flow rate, and gas phase rising impact). The protective ring 21 fits against the outer wall of the tank 10, further restraining the radial sway of the tank 10, and at the same time, it can avoid direct hard contact, which would cause wear to the tank 10.

[0031] The implementation principle of this application embodiment is as follows: the water vapor mixture enters from the input pipe 13 and then flows in a rotating manner along the spiral groove 51. The spiral path of the spiral groove 51 can also guide the fluid to form centrifugal force for release. Then the liquid is discharged from the outlet pipe 12, and the gas rises and passes through the baffle plate 40, which directly intercepts the larger droplets in the rising gas phase. The water vapor continues to rise and then passes through the filter plate 30, which can further intercept smaller droplets. The fine droplets are intercepted by the edge of the through hole 31, realizing secondary filtration. Then it is discharged from the outlet pipe 11 to complete the cycle.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A gas-liquid separation device, characterized in that, include: The tank (10) has an air outlet pipe (11) and a water outlet pipe (12) at its upper and lower ends, respectively, and an input pipe (13) at its middle position. The separation unit includes a separation barrel (50) located at the lower inner side of the tank (10), the separation barrel (50) is provided with a spiral groove (51), and the end of the input pipe (13) located inside the tank is tangent to the spiral groove (51). The separation barrel (50) is used to realize gas-liquid separation. The filtration unit includes a baffle plate (40) disposed above the separation tank (50) and a demister disposed above the baffle plate (40). The baffle plate (40) and the demister are used to filter out moisture carried in the rising gas.

2. The gas-liquid separation device as described in claim 1, characterized in that, The inner cavity of the separation barrel (50) is conical, and the spiral groove (51) extends along its conical inner wall surface.

3. The gas-liquid separation device as described in claim 2, characterized in that, An installation ring (41) is provided inside the tank (10), the installation ring (41) is located above the separation bucket (50), and the baffle plate (40) is provided on the installation ring (41).

4. The gas-liquid separation device as described in claim 3, characterized in that, The baffle (40) is inverted cone-shaped and has a cavity inside for water to adhere to.

5. The gas-liquid separation device as described in claim 4, characterized in that, The diameter of the baffle (40) is smaller than the diameter of the tank (10) to form a channel (14) for water vapor to rise.

6. The gas-liquid separation device as described in claim 1, characterized in that, The demisting component includes multiple sets of filter plates (30) stacked in the tank body (10), with a gap of 2cm to 3cm between adjacent filter plates (30), and multiple sets of through holes (31) are opened on each filter plate (30).

7. The gas-liquid separation device as described in claim 6, characterized in that, The through holes (31) on two adjacent filter plates (30) are staggered.

8. The gas-liquid separation device as described in claim 1, characterized in that, A support (20) is provided on the outside of the tank (10), and a protective ring (21) is provided on the support (20).

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