FI83164B - GAS-VATTENSEPARATOR. - Google Patents

Description

! 83164

GAS-WATER-SEPARATOR - GAS-VATTENSEPARATOR

The present invention relates to a gas-water separator having a substantially cylindrical tubular partition member disposed at the top of the housing with the shaft substantially upright so as to form an annular space between the partition member and the surrounding housing, the annular space between the partition member and the surrounding housing. are provided with helical vanes 10 comprising helical guide members and inclined wall members, wherein the upper and lower portions of the annular spacer and the bore inside the septum are connected to the inlet, the drain valve and the outlet, respectively.

15 The separator is intended to be connected to a gas pipe, such as a steam pipe or a compressed air pipe, to separate water (eg condensate) from the gas to the environment. In particular, the invention relates to a gas-water separator for separating gas and water from each other by means of a centrifugal force caused by a rotating flow.

In this type of gas-water separator, the flow is rotated at the top inside the housing and the water droplets contained in the gas are separated by a centrifugal force generated on the outside and are thus separated. The gas is led to the outlet side, while the separated water droplets are removed to the outside of the housing via a drain valve located at the bottom inside the housing.

In the structure given in the introduction, the flow 30 from the inlet is made to rotate in an annular space by means of rotating vanes so that the water droplets are separated from the outside by the centrifugal force. The water droplets thus separated flow down and are removed to the environment through the drain valve part. In the center of the rotating flow 35, the gas moves towards the outlet side through the bore inside the partition member.

In the conventional structure 2 83164 shown above, the water droplets can only be partially transferred to the outlet side, although the rotating flow is amplified, and it has been impossible to improve the efficiency of the gas-water separation beyond a certain degree.

5 The reason for this is that the process is based only on the law of nature that as the flow rotates, the centrifugal force forces a larger mass outward flow, causing very small drops of water to turn inward from the outside along the surface and thus move to the outlet side with the gas.

The technical idea of the present invention is to catch the water droplets and remove them positively to the outside in a gas and water separator equipped with a circulating vane.

According to the solution of the above problem according to the present invention, the helical guide members gradually protrude outwardly from the upper ends of the inclined wall members projecting obliquely downward from the outer periphery of the partition member towards its lower end so that the helical guide member and the radial wall member meet.

The technical device described above leads to the following operation.

The annular space is formed over the outer circumference of the cylindrical partition member 25, and the inclined downwardly inclined walls are located in the annular intermediate space so that the flow changes direction of movement obliquely in an inclined direction as it passes through the annular space. Thus, the flow rotates in an annular state due to its continuity, and this rotation extends above and below the inclined walls, i. the flow enters the annular space of the wheels and also exits the wheels.

As the helical walls protrude outwardly from the upper ends of the inclined walls to the lower ends of the inclined walls 35, the flow moves more outwardly than corresponding to the tangential direction of the annular space and is blown in a better space against the inner wall of the outer housing. In addition, as the width of the annular space decreases towards the lower ends of the inclined walls at their upper ends, the velocity of the rotating flow gradually increases and reaches a maximum at the lower end portion.

In addition, since the helical walls are connected stepwise to the radial end walls at the lower ends of the sloping walls, the annular intermediate space suddenly expands in these end wall portions. Thus, as the fluid 10 rotates, the pressure near the end wall decreases and water droplets adhering to the nearby wall surfaces accumulate at the joint edges between the helical walls and the end walls, then blown away by a strong rotating flow at a speed reached in 15 at the joint edge, and blown against the inner wall of the outer housing.

The invention has the following specific effects. The gas-water separation is not only achieved by the centrifugal force caused by the rotation of the flow, but the water droplets can also be positively collected at the joint edges between the helical walls and the end walls, and the rotating flow reaches its maximum at these edges to blow the water droplets out of them. the inner wall of the outer casing. As a result, the efficiency of the gas-water separation is extremely high.

Not only is this achieved with increased rotational flow rate, but the extent of the annular space 30 is minimized in the lower end portions of the inclined walls to maximize the rotational flow rate at important points, namely, in the lower end portions of the inclined walls. Therefore, the rotating flow is relatively low before and after these points, thus preventing the water droplets from passing to the outlet side ____ together with the gas or preventing the water surface from being disturbed in the drain valve part and the drain valve from malfunctioning.

If the following is taken into account in the practice of the present invention, better operation and better power will be obtained.

5 If an elongate wall projecting radially from the outer circumferential wall of the septum member forms upward from each upper end of the inclined wall, the flow entering the annular space of the wheels strikes the elongate wall so that the water droplets partially impinge on the elongate wall and adhere .

If at least the outer circumferential wall surface of the partition member, to which the inclined walls and spiral walls 15 belong, is formed so as to have a rough surface, the water droplets adhere more easily to this outer circumferential wall surface and the surface velocity of the rotating flow . The water droplets thus adhering to the wall surface collect in the connecting edge portions, as described above, and are blown against the inner wall of the outer housing. Thus, the water droplets can be separated from the gas by causing them to adhere to the rough wall surface.

25 If the outer periphery of the lower end portion of the septum member protrudes outwardly downwardly into a narrower space from the inner surface of the housing, the rotational flow rate increases again and water separates from the gas and is blown again against the inner wall surface of the outer housing. In this case, the desired operation and power are obtained if the angle of inclination of the outer circumference of the lower end portion of the partition member with respect to the vertical is between 25 and 50 °. The best results are obtained especially when the angle of inclination is 35 °.

In the following, the invention will be described in more detail by means of an application example with reference to the accompanying drawing, in which Fig. 1 shows a gas-water separator according to the present invention in section and combined with a reduction valve; Figure 2 shows a longitudinal section 5 of the partition member 5; Figure 3 shows a section along the line III-III in Figure 2; and Figure 4 shows the partition member in a perspective view.

Figure 1 shows a gas-water separator A according to the invention with reduction valves B for steam.

The housing comprises a spring housing 2 surrounding the pressure control spring 1, a valve housing 4 housing a control valve 3, a body 6 housing 15 a main valve 5, a separator housing body 8 forming a gas-water separator chamber 7, and a lower base 9. These components are made by casting .

The membrane 10, which consists of a thin metal plate, is located between the spring housing 2 and the valve housing 4.

The lower end of the pressure control spring 1 is in contact with the upper surface of the diaphragm 10 via the diaphragm plate 11, while the upper end of the cap 13 attached to the control valve stem 12 of the control valve 3 is in contact with the lower surface of the diaphragm. The space above the membrane 10 is connected to the outside air via the duct 14, while the space below it is connected to the outlet 23 to be described later via the duct 15.

The adjusting screw 17 is fixed to the upper bottom of the spring housing 2 through a bearing 16 made of stainless steel and is locked in turn with a locking nut 18. A steel ball 20 is placed between the adjusting screw 17 and the spring shoe 19 placed on the upper end of the pressure adjusting spring 1.

The protruding part of the adjusting screw 17 is covered by a protective cap 35 21 which is releasably threadedly connected to the spring housing 2.

An inlet 22 and an outlet 23 are formed in the body 6. The inlet 22 and the outlet 23 are separated by a horizontal wall 24 and connected by a valve seat 25 of a valve seat member threadedly connected to the wall 24. The main valve 5 is located below the valve slot 5 25, being held in a resiliently forced state by a helical spring. Its upper end is connected to the piston 26.

The control valve 3 is located in the space formed above the inlet 22 between the passage 27 and the passage 28 in the space formed above the piston 26. It comprises a control valve stem 12 adapted to slide through the control valve seat 29 and a control valve element 30 connected to the lower end of the valve stem 12 and forced upwards from below by a spring 15. A sieve 31 is placed in the duct 27.

The piston 26 is adapted to slide inside a cylinder 32 connected to the inner circumference of the body 26, and two annular grooves are formed on the outer circumference of the piston, in which are placed piston rings made of polytetrafluoroethylene (PTFE) and springs inside the piston rings. The piston 26 is further provided with an opening 33 which connects the upper and lower surfaces of the piston, passing through it a certain amount of flow from the upper surface of the piston and thus forming a pressure control 25.

A generally cylindrical double septum member 34 is disposed around the main piston 5 of the reduction valve B. The outer cylinder is straight and is formed lower than the inner cylinder 30, which expanded slightly at its top and bottom. The tapered screen 35 is located outside the septum member 34. Inside the partition member 34, a connecting rod 36 is integrally formed on the central shaft through a rib to guide the lower part of the main valve 5. The inlet 22 is connected 35 through a screen 35 to an annular space 37 formed between two cylindrical parts of the partition member 34, while the inside 7 83164 of the partition member 34 is connected to the outlet 23 via the valve slot 25 of the main valve 5.

In the annular space 37, rotary vanes 38 are formed integrally with the partition member 34. The septum member, including the rotor blades 38, is made by casting by a wax model method, and its surface is finished rough. Of course, another casting method or cutting or other manufacturing method may also be used, provided that at least a portion of the outer annular wall surface of the partition member 10 is finished rough.

According to the wax model method used in this application, the wall surface roughness is 15 to 60 μπ »expressed as the maximum roughness according to JIS (B 0601).

15 If the wall surface is finished rough so that the surface roughness is not less than 10 R *, · *, a good separating effect is achieved. The rough wall surface is indicated by the reference mark C.

As shown on a larger scale 20 in Figures 2-4, the rotary vanes 38 each include an elongate wall 39 projecting radially from the upper end of the inner cylinder of the septum member 34 to the upper end of the outer cylinder, an inclined wall 40 inclined obliquely downward from the lower end of the elongate wall 39. between the inner cylinder portion, and a helical wall 41 formed on the upper surface of the inclined wall 40 from the inner cylinder toward the outer cylinder. Five rotary wings 38 are formed in the annular space 37. The end of the helical wall 41 is connected stepwise to the radial end wall 42.

The lower part of the inner cylinder of the partition member 34 gradually expands downwardly and terminates in the vicinity of the inner wall of the outer cylinder 35 and at a predetermined distance therefrom. Its angle Θ with respect to the vertical is 35 °. If the inclination angle Θ is set between 8 83164 and 25 - 50 °, a good separation effect is achieved.

The lower base 9 is bolted to the lower end A of the gas-water separator housing 8 to form the interior of the drain valve chamber 7, and a spherical protrusion 5 43 is located in the drain valve chamber 7.

In the lower base 9, the drain valve seat 44 is attached to the inner end of the drain slot 45. The protrusion 43 is covered with a protrusion cover 46 having a connecting opening 47 formed in its lower part. Reference numeral 48 10 denotes a valve opening formed in the upper part of the raised cover 46.

The flow entering the inlet 22 is made to rotate by means of the inclined walls 40 of the rotary vanes 38. The water droplets 15 in the flow can be shaken out and separated outwards by the centrifugal force. The elongate walls 39 allow the incoming flow to fall perpendicularly and deflect the rotating flow caused by the inclined walls 40 to reduce the rotational flow rates and direct it more downward. In this case, the water droplets partially strike the elongate walls 39 and adhere to its surfaces.

The helical walls 41 promote the rotational flow to be directed more outwards than in the tangential direction of the annular space 25. At the lower ends of the inclined walls 40, the width of the annular space 37 reaches a minimum, and the flow rate reaches a maximum. Since the end ends of the helical walls 41 are connected stepwise to the radial end walls 42, the width of the annular space 30 37 suddenly expands as the edge portions join the boundary between the spiral walls 41 and the end walls 42. Thus, as the flow rotates, the pressure in the area near the end walls decreases and water droplets adhered to the wall surface accumulate in the connecting ridge portions. Thus, the accumulated water droplets 35 are blown away from the joint edge portions by a strong rotating flow and blown against the inner wall of the housing 8 (including also the inner wall of the cylinder outside the septum member 34).

The water droplets thus separated flow down along the inner circumferential wall of the outer cylinder of the septum member 34 and the housing 5. The gas passing through the lower end of the partition member 34 passes inside it and moves towards the main valve 5 of the reduction valve B and flows out to the outlet 23, while the separated water enters through the connection opening 47 of the raised cover 46. In this case, the gas inside the raised cover 46 penetrates through the valve opening 48. The buoy 43 moves up and down with the water surface, opening and closing the drain valve seat of the drain valve seat 44, allowing only water to exit the drain valve slot 15 45.

Claims (3)

A gas-water separator having a substantially cylindrical, tubular septum member (34) disposed at the top of the housing with the shaft substantially vertical so as to form an annular space (37) between the septum member and the surrounding housing, the annular septum ( 37) between the partition member and the surrounding housing there are rotary vanes comprising a helical guide member (41) and inclined wall members (40), the upper and lower parts of the annular partition and the bore inside the partition member being connected to an inlet, a drain valve and a drain valve characterized in that the helical guide members (41) gradually protrude outwardly from the upper ends of the inclined wall members (34) (40) projecting obliquely downward from the outer periphery of the partition member so that at the lower end of the helical guide member (41) and the radial wall member (20) sloping wall wall at the bottom of the men (40) is a step. A gas-water separator according to claim 1, characterized in that the vanes comprise elongate wall members (34) projecting radially from the outer circumferential wall of the partition member (34), the elongate walls being formed at the upper ends of the upwardly sloping walls. Gas-water separator according to Claim 1 or 2, characterized in that one outer circumferential wall surface of the partition wall (34) is formed so as to have a roughness of 15 to 50 μιη. 11 83164