CN220204758U - Guide ring and low pressure drop water sealed tank - Google Patents

Abstract

The utility model discloses a guide ring, which is used for a water sealed tank to reduce airflow resistance, and comprises the following components: the annular wall, and along the radial axis of the cross section of annular wall a plurality of water conservancy diversion pieces of spaced arrangement, the both ends along the length direction of water conservancy diversion piece are fixed to the inner wall of annular wall, and the length direction of water conservancy diversion piece is perpendicular with the central axis of annular wall, and wherein, the one end of water conservancy diversion piece cross section by the central axis of annular wall and perpendicular to the length direction of water conservancy diversion piece plane of cutting is set up in the coplanar that intersects with annular wall. The utility model also discloses a low-pressure-drop water sealed tank. The utility model can make the space layout of the water sealed tank compact, reduce the resistance loss, is easy to implement, is convenient for the reconstruction of old equipment, can improve the flow field distribution at the steering position inside the water sealed tank, and improves the efficiency of the water sealed tank.

Description

Guide ring and low pressure drop water sealed tank

Technical Field

The utility model relates to the fields of oil refining, chemical industry and the like, in particular to a guide ring for reducing resistance loss of a water sealed tank. The utility model also relates to a low pressure drop water sealed tank for reducing resistance loss.

Background

The water sealed tank is a commonly used gas medium cutting means at present, has the advantages of easy manufacture, low cost, good sealing, no leakage and the like, and various structure types of water sealed tanks appear in recent years, but because the water sealed tank is generally provided with a gas medium steering structure for effective water sealing, when a gas medium passage is not cut off, local resistance generated by gas medium steering can cause large pressure drop of air flow, the pressure drop generated by the local resistance is up to 80% or more of the total pressure drop of the water sealed tank, especially the side-inlet side-outlet water sealed tank, the flow direction of smoke is converted for many times in the water sealed tank, and the pressure loss is large. In order to reduce the pressure drop caused by the steering structure, the steering structure is usually designed as smooth steering, but the smooth steering can make the equipment structure complex, the manufacturing difficulty is high, the smooth steering is usually large in size, the space layout and the pipeline are poor in matching performance, the engineering adaptability is poor, and the problem of poor flow field distribution uniformity still exists at the internal steering position.

Disclosure of Invention

The present utility model aims to solve or at least partially alleviate the above problems by providing a deflector ring for reducing resistance of a water sealed tank, and a low pressure drop water sealed tank using the deflector ring.

According to an aspect of the present utility model, there is provided a deflector ring for a water sealed tank to reduce air flow resistance, comprising:

annular wall

A plurality of guide vanes arranged at intervals along one radial axis of the cross section of the annular wall, both ends of the guide vanes in the length direction being fixed to the inner wall of the annular wall, the length direction of the guide vanes being perpendicular to the central axis of the annular wall,

wherein one end of the cross section of the deflector taken by a plane passing through the central axis of the annular wall and perpendicular to the length direction of the deflector is disposed in the same plane intersecting with the annular wall.

Preferably, the angle between the chord line of the cross section of the deflector, which is taken from a plane perpendicular to the length direction of the deflector, and the incoming flow direction towards said deflector increases gradually from the inside of the outer curve to the inside of the inner curve of the corner.

Preferably, the included angle is in the range of 45-60 degrees, and the number of the guide vanes is in the range of 1-15 degrees.

Preferably, the guide vane extends in a straight line or a curved line between the two ends.

Preferably, the chord lines of the guide vanes are equal, the height of the annular wall gradually decreases from the outer curved inner side to the inner curved inner side of the corner portion, and the two ends of the guide vanes are contained in the annular surface of the annular wall.

Preferably, the sections of the guide vanes close to the two ends of the radial axis are in an airfoil shape with thick middle and thin two sides, and the sections of the guide vanes between the guide vanes in the airfoil shape are in an arc shape or the sections of the guide vanes between the guide vanes in the airfoil shape are in a shape with straight line at the two ends and arc at the middle.

Preferably, the airfoil-shaped guide vane is a curved bow, a plano-convex, a biconvex or an arc.

Preferably, the distance between the guide vanes gradually decreases from one end of the radial axis near the inside of the corner portion outside bend to the other end near the inside bend.

According to another aspect of the present utility model, there is provided a low pressure drop water sealed tank comprising:

bottom pipe, and

a first pipeline and a second pipeline, the lower ends of which extend upwards from the bottom pipeline respectively to form a communicating pipeline,

the first pipeline, the second pipeline and the bottom pipeline are straight pipes, the central axes of the first pipeline and the second pipeline are located on the same vertical plane, corner parts formed by the first pipeline and the second pipeline and the bottom pipeline are formed by intersecting walls of adjacent pipelines respectively, or the corner parts are formed by intersecting walls of adjacent pipelines and further comprise chamfers, guide vanes are further arranged near the corner parts inside the pipelines and perpendicular to the vertical plane, incoming ends of incoming flows of the sections of the guide vanes, which are cut by planes parallel to the vertical plane and face the air inlet, are arranged on the same plane, the plane where the incoming ends are located is located between a plane, which is perpendicular to the central axes of the corresponding pipelines, of the corner parts, and two ends of the guide vanes along the length direction are connected to the inner walls of the pipelines.

Preferably, both ends of the guide vane in the length direction are fixed to the inner wall of the annular wall, and form a guide ring together with the annular wall, the annular shape of the annular wall is consistent with the annular surface where the cross section of the guide vane intersecting with the inner wall of the pipeline is located, the guide ring is connected to the inner wall of the pipeline through the annular wall, and the guide ring is the guide ring.

Preferably, the water sealed tank further comprises a first upper pipe and/or a second upper pipe which are all straight pipes, the upper end of the first pipe is communicated with the lower end of the first upper pipe, and/or the upper end of the second pipe is communicated with the lower end of the second upper pipe, the central axes of the first pipe and the first upper pipe and/or the second pipe and the second upper pipe are positioned in the same vertical plane, the corner parts formed by the intersection of the walls of the adjacent pipes or the corner parts further comprises chamfer angles, a flow guiding sheet is also arranged near the corner parts formed by the first upper pipe and the first pipe and/or the second upper pipe and the second pipe, the flow guiding sheet is perpendicular to the vertical plane, the incoming flow ends of incoming flows of the flow guiding sheet sections which are cut parallel to the vertical plane and are oriented towards the air inlet are positioned in the same plane, the plane where the incoming flow ends are positioned between the plane which is perpendicular to the central axis of the corresponding pipe and the corner parts near the upstream of the corner parts, and the flow guiding sheet is connected to the inner walls of the two ends of the pipe along the length direction.

Preferably, the corner formed by the first pipeline and the second pipeline and the bottom pipeline is a right angle, the corner formed by the first pipeline and the first upper pipeline and the corner formed by the second pipeline and the second upper pipeline are also right angles, the lower part of the bottom pipeline or the first pipeline or the second pipeline is provided with a liquid inlet, a liquid overflow outlet is arranged above the liquid level of the liquid cutoff airflow of the first pipeline or the second pipeline, and the guide vane is arranged at the diagonal plane of the corner.

According to the guide ring and the low-pressure-drop water sealed tank, the space layout of the water sealed tank is compact, the resistance loss is reduced, the implementation is easy, the old equipment is convenient to reform, the flow field distribution at the steering position inside the water sealed tank can be improved, and the efficiency of the water sealed tank is improved.

Drawings

FIG. 1 is a perspective view of a baffle ring according to one embodiment of the present utility model;

FIG. 2 is a perspective view of the deflector ring of FIG. 1 in the opposite direction;

FIG. 3 is a schematic view showing the deflector ring of FIGS. 1 and 2 mounted at a corner;

FIG. 4 is a flow distribution diagram of the corner portion provided with the deflector ring in the situation shown in FIG. 3;

FIG. 5 is a schematic view showing an angle of attack improving baffle ring mounted at a corner;

FIG. 6 is a schematic view of a cross-section of the baffle of FIGS. 1-3 with the annular wall removed;

FIG. 7 is a cross-sectional shape view of the airfoil baffle of the embodiment illustrated in FIGS. 1-3 and 6;

FIG. 8 is a cross-sectional shape view of an airfoil baffle according to another embodiment of the present utility model;

FIG. 9 is a cross-sectional shape of an arcuate baffle according to yet another embodiment of the present utility model;

FIG. 10 is a cross-sectional shape of an arcuate plate-shaped baffle according to yet another embodiment of the present utility model;

FIG. 11 is a schematic view of a deflector ring mounted at a corner of yet another embodiment;

FIG. 12 is a perspective view of a baffle ring according to yet another embodiment of the present utility model;

FIG. 13 is a side view of a baffle ring according to yet another embodiment of the present utility model;

fig. 14 is a sectional view of a low pressure drop water sealed tank in a normally open operation state according to an embodiment of the present utility model;

FIG. 15 is a cross-sectional view of the low pressure drop water sealed tank of FIG. 14 in an intermediate state during a fluid medium shut-off process;

fig. 16 is a sectional view of a low pressure drop water sealed tank in a normally open operation state according to another embodiment of the present utility model;

fig. 17 is a sectional view of a low pressure drop water sealed tank in a normally open operation state according to still another embodiment of the present utility model;

fig. 18 is a sectional view of a low pressure drop water sealed tank in a normally open operation state according to still another embodiment of the present utility model.

Detailed Description

The present application will be described in further detail with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

Fig. 1 is a perspective view of a guide ring according to an embodiment of the present utility model, and fig. 2 is a reverse perspective view of the guide ring of fig. 1. Referring to fig. 1 and 2 together, the baffle ring is generally indicated by reference numeral 100 and comprises an annular wall 101, and a plurality of baffle plates 102 disposed in spaced relation along a radial axis of a cross section of the annular wall 101, both ends of the baffle plates 102 in the longitudinal direction being fixed to an inner wall of the annular wall 101, the longitudinal direction of the baffle plates 102 being perpendicular to the central axis of the annular wall 101, one end of a baffle plate cross section taken by a plane passing through the central axis of the annular wall 101 and perpendicular to the longitudinal direction of the baffle plates being disposed in the same plane intersecting the annular wall, i.e., one end of the baffle plate cross section being coplanar.

In this embodiment, the guide vane 102 is linear, i.e., the length direction extends along a straight line. The shape of the annular wall of the deflector ring depends on the cross-sectional shape of the main body inner wall or the pipe inner wall mounted to the inside of the water sealed tank, for example, if the central axis of the annular wall of the deflector ring is parallel to the central axis of the main body inner wall or the pipe inner wall, the annular wall is in the shape of a circular ring, and if the central axis of the annular wall of the deflector ring is angled to the central axis of the main body inner wall or the pipe inner wall, the annular wall is in the shape of an elliptical ring. The deflector ring 100 thus formed is a separate component, the deflector 102 being pre-fixed to the annular wall 101. The outer surface of the annular wall 101 is combined to the inner wall of the water-sealed tank body or the inner wall of the pipe to be applied to the water-sealed tank, so that the structure is simple, the installation is convenient, and the water-sealed tank is particularly suitable for improving the performance of old equipment.

When the water-sealed tank is in normally open operation, the sharp-turn structure can cause great resistance loss to air flow, and the resistance loss caused by the structure usually accounts for 20-30% of the total resistance loss of the water-sealed tank, and the extreme case can reach 40%. This is because when the air flow passes through the corner portion of 90 ° where the turning radius is small, the air flow will separate the outer wall at the corner portion from the inner wall after the corner portion, and the pressure gradually increases from the inner wall to the outer wall due to the centrifugal force, and the velocity decreases, so that before the line of symmetry of the corner, the boundary layer along the outer wall is under the reverse pressure gradient, and on the inner wall, the pressure is relatively low, and after turning, the velocity decreases rapidly due to the centrifugal force, and the boundary layer will also be under the reverse pressure gradient, so that the separation will also occur, the separation of the outer wall at the corner portion, the separation of the inner wall after the corner portion will destroy the uniformity of flow, and many eddies will also be generated, affecting the downstream medium; in addition to the above separation phenomenon, a convection phenomenon occurs in the corner pipe, for example, in the section of the pipe where the corner symmetry line is located, the main airflow velocity near the outer wall is reduced, a part of the airflow flows to the wall surface, the airflow near the wall surface is affected by the pressure gradient formed by the centrifugal force, moves along the side wall toward the inner wall direction, the main airflow near the inner wall has a higher flow velocity, the airflow near the wall surface is continuously rolled into the main airflow, and convection is formed, and the convection on the section and the main flow of the pipe are overlapped to cause the flow to have a spiral shape.

The guide rings shown in fig. 1 and 2 are arranged near the corner parts inside the water-sealed tank with the sharp turning structure, and the guide sheets can guide air flow to smoothly and uniformly pass through the sharp turning structure, so that the air flow resistance loss is greatly reduced, and the working efficiency of the system is improved.

Fig. 3 is a schematic view showing the deflector ring of fig. 1 and 2 installed at a corner. As described above for the characteristics of the air flow at the corner, it is preferable that the deflector ring according to the present utility model is disposed at the diagonal of the corner as shown in fig. 3. The deflector ring 100 shown in fig. 3 is adapted to guide an air flow horizontally entering from the right and flowing out from the vertical direction after passing through the deflector ring 100, that is, the right end of the deflector 102 of the deflector ring 100 is an incoming end 1021, the left end is an outgoing end 1022, the line connecting the incoming end 1021 and the outgoing end 1022 is a chord line, the included angle between the chord line and the incoming direction is referred to as an attack angle α, the angles of attack of the deflector 102 arranged from the outside of the corner toward the inside of the corner in the figure are all equal, and the chord lines of the deflector are also equal in the range of 45 ° -60 °, and the same deflector is used. The baffle ring 100 is shown in fig. 3 by way of example with 8 baffles 102, the number of baffles of the present utility model preferably being in the range of 1-15.

Fig. 4 is a flow distribution diagram of a corner portion provided with a deflector ring in the case shown in fig. 3. As is clear from fig. 4, due to the use of the guide ring of the present utility model, the air flow entering horizontally from the right side and flowing vertically from the left side smoothly passes through the corner, so that the phenomena of air flow separation, vortex, convection, etc. at the corner are avoided, and the resistance loss at the corner is reduced, thereby improving the working efficiency of the whole system.

But it can also be seen from fig. 4 that the airflow turns more sharply at circle a inside the corner and more slowly at circle b outside the corner.

Fig. 5 is a schematic view showing an improved deflector ring mounted at a corner. In order to make the airflow distribution in the corner more uniform, the baffle ring 200 of the embodiment shown in fig. 5 is further improved, and the baffle ring 200 uses the same baffle plates 102 as the baffle ring 100, but the attack angles α1- α8 of the baffle plates 102 of the baffle ring 200 from the outside of the corner to the inside of the corner are gradually increased, so that the airflow in the corner can be homogenized from the outside of the corner to the inside of the corner, and the airflow distribution is not only smooth but also more uniform.

Fig. 6 is a schematic view of a cross-section of a baffle with the annular wall removed, and fig. 7 is a cross-sectional shape of an airfoil baffle of the baffle ring of the embodiment shown in fig. 1-3 and 6. The baffle 102 shown in fig. 6 and 7 is one of the airfoil-shaped baffles with a thick middle and thin sides and is composed of a smooth curve, also known as a bowed airfoil-shaped baffle.

FIG. 8 is a cross-sectional shape view of an airfoil baffle according to another embodiment of the present utility model. The cross section of the airfoil shaped baffle 202 is formed by arcs of different radii R1 and R2 to form another airfoil shaped baffle with a thicker middle and thinner sides.

Fig. 9 is a cross-sectional shape of an arcuate baffle according to yet another embodiment of the present utility model. The cross section of the arc-shaped guide vane 302 is formed by arcs with the same radius, the thickness is uniform, and the chord line length is determined by the radius and the central angle theta.

Fig. 10 is a cross-sectional shape of an arcuate plate-shaped baffle according to yet another embodiment of the present utility model. The deflector ring of this embodiment adopts a similar structure to that of fig. 1 and 2, and the cross section of the arc-shaped deflector 402 is formed by an arc line with the same radius and straight lines at both ends, and has a uniform thickness, and the chord line length is determined by the radius, the central angle θ and the length of the straight lines at both ends. The shorter end of the straight line is usually used as an inflow end, and the longer end of the straight line is usually used as an outflow end.

FIG. 11 is a schematic view of a deflector ring mounted at a corner of yet another embodiment. The deflector ring 300 of the present embodiment adopts a similar structure to that of fig. 5, except that the deflector near the inside of the inward bend and the outside bend of the corner uses the curved airfoil deflector 102 and the deflector in the middle uses the arc deflector 302.

The guide ring adopting any type of guide vane is arranged at the sharp-bending structure of the water sealed tank, so that the air flow resistance loss of the water sealed tank is reduced, and the working efficiency of the water sealed tank is improved. The different types of deflectors have slightly different flow guiding properties, and the performance of the wing-shaped deflector is better, but the cost is higher than that of the arc-shaped or arc-plate-shaped deflector.

In the baffle 300 of fig. 11, the arrangement of the angles of attack α1- α8 of the baffle is also the same as the arrangement of the angles of attack of the baffle in fig. 5, i.e., the angles of attack α1- α8 gradually increase from the outside of the corner to the inside of the corner, so that the overall cost of the baffle is reduced as compared to the baffle 100 described in fig. 5, since the airfoil baffle 102 is arranged inside the inside of the inside turn and inside the outside turn, the baffle performance of the airfoil baffle 102 is better than that of the arc baffle 302, the airflow distribution performance near the inside of the inside turn and inside of the outside turn is maintained, and the airflow distribution uniformity at the corner is maintained substantially unchanged, but since the cost of the arc baffle 302 is lower than that of the airfoil baffle 102.

It is also possible to adjust the air flow distribution at the corner by providing a change in the distance between the guide vanes, for example by gradually decreasing the distance between the guide vanes from one end to the other end along the radial axis of the guide ring perpendicular to the central axis in cross section, and in particular in connection with the corner, even if the distance between the guide vanes from the inside of the outside bend to the inside bend is gradually decreased, so that the air flow distribution inside the corner is uniform.

Fig. 12 is a perspective view of a baffle ring according to yet another embodiment of the present utility model. The baffle 400 of this embodiment is similar to the baffle of fig. 1 and 2, except that the baffle 502 extends in a curve between the ends.

When the smoke in the water sealed tank circulates, the working temperature is up to 720 ℃, the guide vane can generate larger thermal stress when being heated, expanded and stretched, and the guide vane 502 is arranged to extend along a curve, so that the deformation of the thermal stress can be absorbed better.

Fig. 13 is a side cross-sectional view of a baffle ring according to yet another embodiment of the present utility model. The baffle ring 500 of this embodiment adopts the arc baffle 302, or any one of the aforementioned baffle plates or a combination of a plurality of baffle plates, and the angle of attack and the distance between the baffle plates can be changed, unlike the baffle rings described above, the height of the annular wall 501 of the baffle ring 500 gradually decreases from one end to the other end, and the two ends of the cross section of the baffle 302 are contained in the annular surface of the annular wall 501, as shown in the figure. When the deflector ring 500 is applied to the corner, since the radius of the corner of the outer bend is large, the centrifugal force applied to the portion of the annular wall 501 of the deflector ring 500 at the outer bend is greater than the centrifugal force at the portion at the inner bend, and thus the higher portion of the annular wall 501 is generally disposed inside the outer bend and the lower portion is generally disposed inside the inner bend, to increase the service life of the deflector ring.

Fig. 14 is a sectional view of a low pressure drop water sealed tank in a normally open operation state according to an embodiment of the present utility model, and fig. 15 is a sectional view of the low pressure drop water sealed tank in a fluid medium cut-off state according to an embodiment of the present utility model. Referring to fig. 14 and 15 simultaneously, a low pressure drop water sealed tank is generally indicated by reference numeral 10 and includes a bottom duct 11; a first pipe 12 and a second pipe 13, the lower ends of which extend upward from the bottom pipe 11, respectively, to form a communication pipe; a first upper duct 14 and a second upper duct 15, the upper end of the first duct 12 being communicated with the lower end of the first upper duct 14, the upper end of the second duct 13 being communicated with the lower end of the second upper duct 15, the bottom duct 11, the first duct 12 and the first upper duct 14, and the second duct 13 and the second upper duct 15 being straight pipes, the central axes being in the same vertical plane, the corners of the first duct 12 and the second duct 13 respectively with the bottom duct 11 being formed by the intersection of the walls of the adjacent ducts, the corners of the first upper duct 14 and the first duct 12 and the second upper duct 15 and the second duct 13 being formed by the intersection of the walls of the adjacent ducts, a deflector ring 100 being provided in the vicinity of the corners of the first duct 12 and the second duct 13 respectively with the bottom duct 11, in the vicinity of the corners of the first upper duct 14 and the first duct 12 and the second upper duct 15 and the second duct 13, the baffle 102 of the baffle ring 100 is disposed perpendicularly to the vertical plane in which the central axes of the bottom duct 11, the first duct 12, the second duct 13, the first upper duct 14 and the second upper duct are located, the inflow ends of the inflow of the baffle cross-sections toward the intake port of each baffle ring 100 taken by the plane parallel to the vertical plane are disposed in the same plane, the plane in which the inflow ends of each baffle ring are located is located between the plane perpendicular to the central axis of the corresponding duct and the diagonal plane of the corner in the vicinity of the upstream of the corner in which the corresponding baffle ring is located, both ends of the baffle 102 in the length direction are connected to the corresponding duct inner wall, and the convex-concave orientation of the baffle 102 coincides with the turning orientation of the corner, i.e., the convex portion of the baffle 102 faces the outer curved inner wall of the corner, the concave portion of the deflector 102 faces the inner curved wall of the corner portion. The open end of the first upper duct 14 forms an air inlet and the open end of the second upper duct 15 forms an air outlet.

The bottom pipe 11 is provided with a liquid inlet 111 in the lower part and a liquid overflow 131 in the upper part of the second pipe, which liquid overflow 131 is usually arranged above the level of the liquid intercepting gas flow, from which liquid overflow 131 a large charge of liquid can overflow for recycling. The liquid inlet 111 may be provided at a lower portion of the first pipe 12 or the second pipe 13.

In the embodiment shown in fig. 14 and 15, the baffle ring 100 is mounted at the diagonal plane of the corner, where the diagonal plane is a preferred position, and if the baffle ring is sized reasonably, the plane where the flow end is located can be arranged between the plane located near the upstream of the corner and perpendicular to the central axis of the corresponding duct and the diagonal plane of the corner, so that the effect of reducing the resistance loss of air flow and promoting the uniform air flow distribution of the corner can be still achieved.

The corner portions may be sharp corners or, as shown in fig. 14 and 15, appropriate chamfers may be provided at the sharp corner positions of the outer corners and the inner corners of the corner portions to facilitate the installation of the deflector ring.

The water sealed tank 10 of the present embodiment forms a pipeline type water sealed tank with an inverted Ω shape, unlike the existing low pressure drop water sealed tank, the corner portion thereof does not need to form a complicated and bulky smooth structure or a shelled elbow structure to reduce the resistance loss of the air flow, and even can be a 90 ° right-angle sharp bend, and the effect of reducing the resistance loss of the air flow can be achieved by arranging a guide ring at the corner portion, but the structure is simple and compact. Especially, the optimization of the old water-sealed tank system with large air flow resistance loss at the corner part is facilitated, and the engineering adaptability is strong.

Fig. 16 is a sectional view of a low pressure drop water sealed tank in a normally open operation state according to another embodiment of the present utility model. The embodiment of the low pressure drop water sealed tank shown in fig. 16, in which the deflector ring 100 is still used, is generally indicated by reference numeral 20, and differs from the embodiments shown in fig. 14 and 15 in that the low pressure drop water sealed tank 20 does not include a second upper duct, i.e., the upper end of the second duct 23 directly forms the air outlet, thus forming only three corner portions, each of which is provided with one deflector ring 100.

Fig. 17 is a sectional view of a low pressure drop water sealed tank in a normally open operation state according to still another embodiment of the present utility model. The embodiment of the low pressure drop water sealed tank shown in fig. 17, in which the deflector ring 100 is still used, is generally indicated by reference numeral 30, and differs from the embodiment shown in fig. 14 and 15 in that the low pressure drop water sealed tank 20 does not include the first and second upper ducts, i.e., the upper ends of the first and second ducts 32 and 33 directly form the air inlet and outlet ports, and thus only two corner portions, each of which is provided with one deflector ring 100.

Fig. 18 is a sectional view of a low pressure drop water sealed tank in a normally open operation state according to still another embodiment of the present utility model. The embodiment of the low pressure drop water sealed tank shown in fig. 18, which is generally indicated by reference numeral 40, differs from the embodiments shown in fig. 14 and 15 in that the low pressure drop water sealed tank 20 does not include the first and second upper ducts, i.e., the upper ends of the first and second ducts 32 and 33 directly form the air inlet and outlet ports, thus forming only two corner portions, in this embodiment using guide rings 500, one guide ring 500 being provided for each corner portion. The portion of the annular wall 501 of the deflector ring 500 where the thickness is high is provided at the outer bend of the corner.

Any one of the guide rings described above, or a combination of different guide rings, may be used inside the corner portion of the low pressure drop water sealed tank according to the embodiment of the present utility model.

It should also be noted that the guide vane may be fixedly connected directly to the inner wall of the duct of the low pressure drop water sealed tank without the need for a ring wall of the guide ring to be fixedly connected to the inner wall of the duct of the corner portion, i.e. the ring wall is not necessary, and the guide ring structure facilitates the arrangement and installation of the guide vane. Under the condition that the guide vane is directly and fixedly connected to the inner wall of the pipeline of the low-pressure-drop water sealed tank, the position, the distance, the attack angle setting, the convex-concave orientation, the shape selection of the whole straight line type or curve type guide vane and the like of the guide vane are the same as those of the guide vane of the guide ring relative to the corner part under the condition of adopting the guide ring structure.

The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the utility model referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the utility model. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.

Claims (14)

1. A deflector ring for a corner portion of a water sealed tank to reduce air flow resistance, comprising:

annular wall

A plurality of guide vanes arranged at intervals along one radial axis of the cross section of the annular wall, both ends of the guide vanes in the length direction being fixed to the inner wall of the annular wall, the length direction of the guide vanes being perpendicular to the central axis of the annular wall,

wherein one end of the cross section of the deflector taken by a plane passing through the central axis of the annular wall and perpendicular to the length direction of the deflector is disposed in the same plane intersecting with the annular wall.

2. A deflector ring as claimed in claim 1, characterized in that the angle between the chord line of the deflector cross-section taken from a plane perpendicular to the length direction of the deflector and the incoming flow direction towards the deflector increases gradually from the inside of the outer curve to the inside of the inner curve of the corner.

3. A deflector ring as claimed in claim 2, wherein the included angle is in the range 45 ° -60 ° and the number of deflector sheets is in the range 1-15 °.

4. A deflector ring as claimed in claim 1 or claim 2, wherein the deflector extends in a straight or curved line between the ends.

5. A deflector ring as claimed in claim 1 or claim 2, wherein the chord lines of the deflector sheets are equal, the height of the annular wall decreasing from the inside of the outer curve to the inside of the inner curve of the corner, the ends of the deflector sheets being contained within the annulus of the annular wall.

6. A deflector ring according to claim 1 or 2, wherein the deflector near the ends of the radial axis has an airfoil shape with thick middle and thin sides, and the deflector between the deflector of the airfoil shape has an arc shape or has straight ends and an arc shape in the middle.

7. The baffle ring of claim 6, wherein the airfoil-shaped baffle is bowed, plano-convex, biconvex, or circular arc.

8. A deflector ring according to claim 1 or 2, wherein the spacing between the deflector sheets decreases progressively from one end of the radial axis adjacent the inside of the corner outer bend to the other end adjacent the inside of the inner bend.

9. A low pressure drop water sealed tank comprising:

bottom pipe, and

a first pipeline and a second pipeline, the lower ends of which extend upwards from the bottom pipeline respectively to form a communicating pipeline,

the first pipeline, the second pipeline and the bottom pipeline are straight pipes, the central axes of the first pipeline and the second pipeline are located on the same vertical plane, corner parts formed by the first pipeline and the second pipeline and the bottom pipeline are formed by intersecting walls of adjacent pipelines respectively, or the corner parts are formed by intersecting walls of adjacent pipelines and further comprise chamfers, guide vanes are further arranged near the corner parts inside the pipelines and perpendicular to the vertical plane, incoming ends of incoming flows of the sections of the guide vanes, which are cut by planes parallel to the vertical plane and face the air inlet, are arranged on the same plane, the plane where the incoming ends are located is located between a plane, which is perpendicular to the central axes of the corresponding pipelines, of the corner parts, and two ends of the guide vanes along the length direction are connected to the inner walls of the pipelines.

10. The low pressure drop water sealed tank according to claim 9, wherein both ends of the deflector in the length direction are fixed to an inner wall of an annular wall, forming a deflector ring together with the annular wall, the annular shape of the annular wall conforming to an annular surface where a cross section of the deflector intersects with an inner wall of a pipe, the deflector ring being connected to the inner wall of the pipe through the annular wall, the deflector ring being according to any one of claims 1 to 8.

11. The low pressure drop water sealed tank according to claim 9, further comprising a first upper duct and/or a second upper duct each being a straight pipe, the first duct upper end communicating with the first upper duct lower end and/or the second duct upper end communicating with the second upper duct lower end, the central axes of the first duct and the first upper duct and/or the second duct and the second upper duct being located in the same vertical plane, a corner portion formed by the intersection of walls of adjacent ducts, or a chamfer being provided in the vicinity of the corner portion formed by the first upper duct and the first duct and/or the second upper duct, a baffle being provided in the same plane by the incoming flow end of an incoming flow toward the air inlet of a baffle section taken parallel to the vertical plane.

12. The low pressure drop water sealed tank as claimed in claim 11, wherein the corner formed by the first duct and the second duct is a right angle with respect to the corner formed by the bottom duct, the corner formed by the first duct and the first upper duct, and the corner formed by the second duct and the second upper duct are also right angles, the bottom duct or the lower portion of the first duct or the second duct is provided with a liquid inlet, the liquid cut-off air flow of the first duct or the second duct is provided with a liquid overflow outlet above the liquid level, and the deflector is disposed at the diagonal plane of the corner.

13. The low pressure drop water sealed tank according to claim 10, further comprising a first upper duct and/or a second upper duct each being a straight pipe, the first duct upper end communicating with the first upper duct lower end and/or the second duct upper end communicating with the second upper duct lower end, the central axes of the first duct and the first upper duct and/or the second duct and the second upper duct being located in the same vertical plane, a corner portion formed by the intersection of walls of adjacent ducts, or a chamfer being provided in the vicinity of the corner portion formed by the first upper duct and the first duct and/or the second upper duct, a baffle being provided in the same plane by the incoming flow end of an incoming flow toward the air inlet of a baffle section taken parallel to the vertical plane.

14. The low pressure drop water sealed tank as claimed in claim 13, wherein the corner formed by the first duct and the second duct is a right angle with respect to the corner formed by the bottom duct, the corner formed by the first duct and the first upper duct, and the corner formed by the second duct and the second upper duct are also right angles, the bottom duct or the lower portion of the first duct or the second duct is provided with a liquid inlet, the liquid cut-off air flow of the first duct or the second duct is provided with a liquid overflow outlet above the liquid level, and the deflector is disposed at the diagonal plane of the corner.