CN217234844U - Telescopic filtering energy dissipater - Google Patents

Abstract

The utility model discloses a flexible filtering energy dissipater, include: a connecting pipe having a flow passage therein through which water flows; the energy dissipation assembly is of a semi-closed hollow structure formed by sequentially connecting at least a filtering energy dissipation section, a diffusion section and a connecting section along the water flow direction, the filtering energy dissipation section and the diffusion section are located inside a flow channel, a plurality of throttling holes communicated with the flow channel and the cavity of the energy dissipation assembly are formed in the filtering energy dissipation section, and the connecting section is in clearance fit with the connecting pipes and is in sealing connection through a sealing assembly. The utility model discloses the energy dissipater can be suitable for great pressure differential, also is applicable to more abominable cavitation condition simultaneously.

Description

Telescopic filtering energy dissipater

Technical Field

The utility model relates to a pipeline valve technical field, concretely relates to flexible filtering energy dissipater.

Background

The pipeline is at the in-process of water delivery, for the decompression energy dissipation, sets up energy absorber on the pipeline usually, but current energy absorber structure is complicated, and use cost is high, and has the not good problem of energy dissipation effect, can not satisfy customer's demand and safety requirement.

Furthermore, the sealing of the connection between the pipe and the dissipater is susceptible to certain deflections of the pipe.

In the pressure water pipeline, most of the medium is raw water, so that more impurities are inevitably present. Therefore, filters need to be arranged at key positions, but the traditional filters have the problem of being easy to damage after being clogged. Meanwhile, the pressure pipeline has more requirements for pressure reduction and energy dissipation, and the existing energy dissipater has the problems of poor energy dissipation, inconvenience in maintenance and the like.

Based on the above situation, the utility model provides a but flexible filter of online maintenance can effectively solve above problem.

SUMMERY OF THE UTILITY MODEL

To the not enough of existence among the prior art, the utility model aims to provide a flexible filtering energy absorber. The energy dissipation can be realized for water flow in the pipeline, and meanwhile, the filtering effect can be realized, and the use requirement is met.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes:

a telescopic filtering energy dissipater comprising:

a connecting pipe having a flow passage therein through which water flows;

the energy dissipation assembly is of a semi-closed hollow structure formed by sequentially connecting at least a filtering energy dissipation section, a diffusion section and a connecting section along the water flow direction, the filtering energy dissipation section and the diffusion section are located inside a flow passage, a plurality of throttling holes for communicating the flow passage and a cavity of the energy dissipation assembly are formed in the filtering energy dissipation section, and the connecting section and the connecting pipe are in clearance fit and are in sealing connection through a sealing assembly.

Preferably, the filtering energy-dissipating section comprises a bottom plate perpendicular to the water flow direction and a side plate formed by extending the edge of the bottom plate along the water flow direction, the bottom plate and the side plate are respectively provided with a first throttle hole and a second throttle hole, and the spraying directions of the first throttle hole and the second throttle hole are perpendicular to each other.

Further preferably, the area of the second orifice is 20 to 100% of the area of the first orifice.

Further preferably, the size of the bottom plate is 30-70% of the size of the flow channel.

Preferably, the diffuser section is a conical structure, and an included angle between the conical surface of the diffuser section and the water flow direction is an acute angle.

Further preferably, the included angle of the center of the diffusion section is 30-90 degrees.

Preferably, a telescopic assembly used for adjusting the telescopic of the energy dissipation assembly relative to the connecting pipe along the water flow direction is arranged between the energy dissipation assembly and the connecting pipe.

Further preferably, the telescopic assembly comprises a plurality of nuts and long screws respectively and fixedly connected with the connecting pipe and the connecting section through the nuts, and the connecting section can be stretched in the water flow direction relative to the connecting pipe by adjusting the nuts.

Preferably, the sealing assembly comprises an annular groove arranged on the outlet end of the connecting pipe in the annular direction, a sealing ring matched with the annular groove and a gland used for pressing the sealing ring inwards.

Preferably, be provided with the desilting subassembly that is used for clearing up runner and energy dissipation subassembly on the connecting pipe, the desilting subassembly including set up respectively on the connecting pipe lateral wall and with the desilting mouth of runner intercommunication and with the apron of desilting mouth detachable connection.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

1. the utility model discloses a filtering energy dissipation section on be provided with the orifice of injection direction mutually perpendicular, on the one hand, the orifice can play filterable effect to the rivers in the runner, on the other hand, alternately the rivers that spray can reach the energy dissipation effect of preferred.

2. The utility model discloses a toper diffuser segment, the area of overflowing of progressively increasing water can make rivers get into the linkage segment at rear after here slows down, further reduces the rivers ability.

3. The utility model discloses a flexible subassembly can transmit pipeline strength to can install under the certain amount of deflection condition, do not influence the leakproofness of pipeline and filter junction.

4. The utility model discloses the energy dissipater can be suitable for great pressure differential, and pressure differential is comparatively suitable between 0.05MPa to 1MPa, also is applicable to more abominable cavitation condition simultaneously.

Drawings

Figure 1 is a schematic cross-sectional structure diagram of the energy dissipater of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

figure 3 is a schematic cross-sectional structure view of the connecting pipe of the energy dissipater of the present invention;

fig. 4 is a schematic diagram showing the dimension marking of each part of the energy dissipater of the present invention.

Reference numerals: 1. a connecting pipe; 2. an energy dissipation assembly; 21. filtering the energy dissipation section; 22. a diffuser section; 23. a connecting section; 211. an orifice; 211a, a first orifice; 211b, a second orifice; 212. a base plate; 213. a side plate; 3. a telescopic assembly; 31. a nut; 32. a long screw; 4. a seal assembly; 41. a seal ring; 42. a gland; 5. a dredging component; 51. a dredging opening; 52. and a cover plate.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the following description of the preferred embodiments of the present invention is given with reference to the accompanying examples, but it should be understood that the drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The utility model provides a flexible filtering energy dissipater, including connecting pipe 1 and energy dissipation subassembly 2, wherein 1 entrance point of connecting pipe and preceding pipeline end-to-end connection, energy dissipation subassembly 2 exit ends are connected with 1 exit end of connecting pipe and a back pipeline anterior segment respectively.

As shown in fig. 1, the inside of the connecting pipe 1 is provided with a flow passage for water flow, the connecting pipe 1 is provided with a connecting flange at the inlet end and the outlet end, furthermore, in order to clean up impurities on the flow passage and the energy dissipation assembly 2, a plurality of dredging assemblies 5 are arranged at the periphery of the connecting pipe 1, each dredging assembly 5 comprises a dredging port 51 which is arranged on the side wall of the connecting pipe 1 and is communicated with the flow passage and a cover plate 52 which is detachably connected with the dredging port 51, and the cover plate 52 and the dredging port 51 can be fixedly connected through bolts and nuts 31.

As shown in fig. 2 and 3, the energy dissipation component 2 is a semi-closed hollow structure formed by sequentially connecting at least a filtering energy dissipation section 21, a diffusion section 22 and a connecting section 23 along the water flow direction, the filtering energy dissipation section 21 and the diffusion section 22 are both located inside a flow channel, the filtering energy dissipation section 21 is provided with a plurality of throttle holes 211 communicating the flow channel and the cavity of the energy dissipation component 2, and when water flows through the throttle holes 211, filtering and pressure reduction energy dissipation are completed. The energy dissipation components 2 can be produced by a casting process or a welding process.

Wherein, the connecting section 23 is in clearance fit with the connecting pipe 1 and is connected in a sealing way through a sealing assembly 4. The two have a clearance of about 1mm in the circumferential direction, when the nut 31 on the long screw rod 32 is not screwed, the two can slide relatively, and after the four nuts 31 on the long screw rod 32 are locked (when the two are connected with a rear pipeline), a force transmission structure is formed. The sealing ring 41 is controlled by the gland 42, and the sealing between the connecting section 23 and the connecting pipe 1 can be realized by locking the screw on the gland 42. The sealing assembly 4 comprises an annular groove arranged on the outlet end of the connecting pipe 1 in the annular direction, a sealing ring 41 matched with the annular groove, and a gland 42 used for pressing the sealing ring 41 inwards. Wherein the gland 42 can fix the packing 41 to the connection pipe 1 by means of a screw and a screw hole circumferentially provided to the connection pipe 1.

Specifically, the filtering energy dissipation section 21 is made of stainless steel, and includes a bottom plate 212 perpendicular to the water flow direction and a side plate 213 formed by extending the edge of the bottom plate 212 along the water flow direction, the bottom plate 212 and the side plate 213 are respectively provided with a first throttle hole 211a and a second throttle hole 211b, and the spraying directions of the first throttle hole 211a and the second throttle hole 211b are perpendicular to each other, so that the energy of the sprayed water flow can be offset, and a better energy dissipation effect can be achieved.

Further, the area of the second orifice 211b is 20 to 100% of the area of the first orifice 211 a. The water flow jetted by the 211a and the water flow jetted by the 211b are perpendicular to each other, so that the mixed flow in the hedging process can be fully utilized, and a good energy dissipation effect is achieved. However, if the water flow in the horizontal direction (i.e., the water flow jetted from 211a) is weak, it is easy for the circumferential water flow (i.e., the water flow jetted from 211b) to impact the inner wall of the segment 21, so that the segment 21 itself is damaged by cavitation. Thus, 211a should eject a stronger stream than 211b, i.e., 211b should have an area less than 211 a. However, it is not preferable to be too small, and if it is too small, the energy dissipation effect is likely to be poor. Therefore, the area of 211b is required to be 20-100% of the area of 211 a.

Further, the size of the bottom plate 212 is 30-70% of the size of the flow channel. In consideration of the requirement of filtering energy dissipation, the bottom plate 212 should be subjected to certain necking on the basis of a nominal size, the necking can improve the energy dissipation capability, but the excessive necking can cause the internal flow velocity to be too high and the cavitation cannot be controlled. Thus, the internal throat area should be between 30% and 70% of the nominal area, and the internal flow rate is 2 to 9 times the nominal flow rate of the device.

The diffuser section 22 is a conical structure, and an included angle between the conical surface and the water flow direction is an acute angle. The conical diffuser section 22 can gradually increase the flow area of the water body, so that the water flow is decelerated at the flow area and enters the rear connecting section 23, and the water flow energy is further reduced.

Further, the included angle of the center of the diffuser section 22 is 30-90 degrees. The high-speed water flows to the section 23 through the section 22 after being mixed in the section 21. The section 22 belongs to a gradual change section, and when the ratio of the size of the bottom plate 212 to the size of the flow channel is smaller, the flow rate of the section 21 is higher, and the central angle of the section 22 should be smaller, so that the section 22 is prevented from being damaged by cavitation. The larger the ratio of the size of the bottom plate 212 to the size of the flow channel, the lower the flow rate of segment 21, and the slightly larger the central angle of segment 22. Overall, the included angle of the 22 segment centers should be between 30-90 deg. for structural reasons.

As shown in fig. 2, a telescopic assembly 3 for adjusting the telescopic of the energy dissipation assembly 2 relative to the connecting pipe 1 along the water flow direction is arranged between the energy dissipation assembly 2 and the connecting pipe 1. The telescopic assembly 3 comprises a plurality of nuts 31 and long screws 32 which are respectively and tightly connected with the connecting pipe 1 and the connecting section 23 through the nuts 31, and the connecting section 23 can be stretched and contracted along the water flow direction relative to the connecting pipe 1 by adjusting the nuts 31. The telescopic assembly 3 can transfer pipeline force and can be installed under the condition of certain deflection, and the sealing performance of the joint of the pipeline and the filter is not influenced. The expansion amount is not less than +/-40 mm.

The foregoing is merely a preferred embodiment of the present invention, but the present invention is not limited to the specific embodiment described above. Those skilled in the art should appreciate that they can readily use the present disclosure as a basis for modifying, supplementing, or modifying other structures without departing from the principles of the invention.

Claims (10)

1. A telescopic filtering energy dissipater, characterized by comprising:

a connecting pipe (1) having a flow passage for water to flow through therein;

the energy dissipation assembly (2) is of a semi-closed hollow structure formed by sequentially connecting at least a filtering energy dissipation section (21), a diffusion section (22) and a connecting section (23) along the water flow direction, the filtering energy dissipation section (21) and the diffusion section (22) are located inside a flow channel, a plurality of throttling holes (211) communicating the flow channel and a cavity of the energy dissipation assembly (2) are formed in the filtering energy dissipation section (21), and the connecting section (23) is in clearance fit with the connecting pipe (1) and is in sealing connection with the connecting pipe through a sealing assembly (4).

2. The telescopic filtering energy dissipater according to claim 1, wherein: the filtering energy dissipation section (21) comprises a bottom plate (212) perpendicular to the water flow direction and a side plate (213) formed by extending the edge of the bottom plate (212) along the water flow direction, a first throttle hole (211a) and a second throttle hole (211b) are respectively arranged on the bottom plate (212) and the side plate (213), and the spraying directions of the first throttle hole (211a) and the second throttle hole (211b) are perpendicular to each other.

3. The telescopic filtering energy dissipater according to claim 2, wherein: the area of the second throttle hole (211b) is 20-100% of the area of the first throttle hole (211 a).

4. The telescopic filtering energy dissipater according to claim 2, wherein: the size of the bottom plate (212) is 30-70% of the size of the flow channel.

5. The telescopic filtering energy dissipater according to claim 1, wherein: the diffusion section (22) is of a conical structure, and an included angle between the conical surface of the diffusion section and the water flow direction is an acute angle.

6. The telescopic filtering energy dissipater of claim 5, wherein: the central included angle of the diffusion section (22) is 30-90 degrees.

7. The telescopic filtering energy dissipater according to claim 1, wherein: and a telescopic assembly (3) used for adjusting the energy dissipation assembly (2) to stretch relative to the connecting pipe (1) along the water flow direction is arranged between the energy dissipation assembly (2) and the connecting pipe (1).

8. The telescopic filtering energy dissipater of claim 7, wherein: the telescopic assembly (3) comprises a plurality of nuts (31) and long screws (32) which are respectively connected with the connecting pipe (1) and the connecting section (23) in a fastening mode through the nuts (31), and the connecting section (23) can stretch out and draw back along the water flow direction relative to the connecting pipe (1) through adjusting the nuts (31).

9. The telescopic filtering energy dissipater according to claim 1, wherein: the sealing assembly (4) comprises an annular groove arranged on the outlet end of the connecting pipe (1) in the annular direction, a sealing ring (41) matched with the annular groove and a gland (42) used for pressing the sealing ring (41) inwards.

10. The telescopic filtering energy dissipater according to claim 1, wherein: be provided with desilting subassembly (5) that are used for clearing up runner and energy dissipation subassembly (2) on connecting pipe (1), desilting subassembly (5) including set up respectively on connecting pipe (1) lateral wall and with desilting mouth (51) of runner intercommunication and with apron (52) of desilting mouth (51) detachable connection.

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