CN213349337U

CN213349337U - Atomizing nozzle

Info

Publication number: CN213349337U
Application number: CN202022234090.4U
Authority: CN
Inventors: 邓伟
Original assignee: Sichuan Tainuo Fluid Control Technology Co ltd
Current assignee: Sichuan Tainuo Fluid Control Technology Co ltd
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-06-04
Anticipated expiration: 2030-10-09

Abstract

The utility model relates to a fluid control device technical field discloses an atomizing nozzle, including the sieve that is located valve body outlet pipe middle part, the sieve is perpendicular with valve body outlet pipe axis, the sieve middle part is equipped with the nozzle core that can dismantle the connection, be equipped with in the sieve along the radial extension of sieve and wear out the cooling passageway of valve body lateral wall, the position diameter that nozzle core lateral wall corresponds the cooling passageway reduces and forms the cooling ring chamber, a plurality of cooling spouts of cooling ring chamber lateral wall circumference equipartition, can realize fluid rapid cooling in the bypass valve, thereby improve valve material stability, effective increase of service life, very big spreading value and wide application prospect have.

Description

Atomizing nozzle

Technical Field

The utility model relates to a fluid control technical field, concretely relates to atomizing nozzle.

Background

In the technical field of fluid control devices, a steam turbine bypass system becomes an important component of a thermodynamic system of an intermediate reheating unit, and when the operation working conditions of a boiler and a steam turbine are not matched, the difference value between the steam quantity produced by the boiler and the steam quantity required by the steam turbine can be directly introduced into a condenser after pressure reduction and temperature reduction of a bypass without entering the steam turbine. The bypass system of the intermediate reheating unit is an important adjusting and protecting system when the unit type unit is started or stopped or under accident conditions, and although the investment is increased due to the arrangement of the bypass system, the bypass system can compensate the advantages of protecting a reheater, shortening the starting time, reducing the starting heat loss, increasing the flexibility of unit operation, prolonging the service life of the unit and the like.

When the turbine bypass valve works, the turbine bypass valve is required to bear considerable internal pressure, and is also required to bear thermal shock and thermal load caused by severe temperature change in a short time due to the change of working conditions and the action of temperature reduction of water spraying, but steam in the conventional bypass valve cannot be well cooled at present, so that the temperature of a fluid flowing out of the valve is still high, even cannot meet the process requirement, and in addition, the service life of the valve is easily shortened due to high temperature.

Therefore, there is a need in the art for an atomizing nozzle that can achieve rapid cooling of fluid in a bypass valve, thereby improving stability of the valve material and effectively prolonging the service life of the atomizing nozzle.

Disclosure of Invention

The utility model overcomes prior art's defect provides a can realize fluid rapid cooling in the bypass valve to improve valve material stability, effective increase of service life's atomizing nozzle.

The utility model discloses a following technical scheme realizes:

the utility model provides an atomizing nozzle, is including being located the sieve at valve body outlet pipe middle part, the sieve is perpendicular with valve body outlet pipe axis, the sieve middle part is equipped with the nozzle core that can dismantle the connection, be equipped with in the sieve along the radial cooling passageway that extends of sieve and wear out the valve body lateral wall, the position diameter that nozzle core lateral wall corresponds the cooling passageway reduces and forms the cooling ring chamber, a plurality of cooling spouts of cooling ring chamber lateral wall circumference equipartition.

Furthermore, the cooling nozzles comprise a plurality of layers which are uniformly distributed along the axial direction and a plurality of rows which are uniformly distributed along the circumferential direction.

Further, the middle part of the inner side wall of the nozzle core is necked down to form a flared passage.

Furthermore, the periphery of the nozzle core is provided with a plurality of high-temperature channels which are uniformly distributed on the circumference, the lower ends of the high-temperature channels face the outer side wall of the nozzle core, and the position of the nozzle core, corresponding to the high-temperature channels, is provided with a high-temperature nozzle.

Furthermore, the upper part of the outer side wall of the nozzle core is provided with a buckling ring, and a through hole is formed in the position, corresponding to the high-temperature nozzle, of the buckling ring.

Furthermore, the upper portion of the inner side wall of the buckling ring is provided with an inner convex edge, a concave cavity is formed in the position, corresponding to the inner convex edge, of the nozzle core, and a circumferential positioning mechanism is arranged between the outer side wall of the buckling ring and the sieve plate.

Furthermore, one end of the cooling channel, which extends out of the valve body, is connected with a cooling pipe joint.

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

the utility model discloses a be located the sieve at valve body outlet pipe middle part, the sieve is perpendicular with valve body outlet pipe axis, the sieve middle part is equipped with the nozzle core that can dismantle the connection, be equipped with in the sieve along the radial extension of sieve and wear out the cooling passageway of valve body lateral wall, the position diameter that the nozzle core lateral wall corresponds the cooling passageway reduces and forms the cooling ring chamber, a plurality of cooling spouts of cooling ring chamber lateral wall circumference equipartition, fluid rapid cooling in can realizing the bypass valve, thereby improve valve material stability, effectively increase of service life, very big spreading value and wide application prospect have.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a sectional view of the overall structure of the present invention;

FIG. 2 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;

FIG. 3 is a cut-away schematic view of an atomizing nozzle of the present invention;

FIG. 4 is a cut-away schematic view of the lower valve body of the present invention;

FIG. 5 is a top view of the present invention shown in FIG. 4;

FIG. 6 is a schematic cut-away view of the present invention in one embodiment.

Reference numbers and corresponding part names in the drawings:

11-an upper valve body, 12-a lower valve body, 14-a cooling pipe joint, 18-a tail cavity, 19-a flow equalizing cover, 5-a valve core assembly, 6-a valve cage assembly, 9-an atomizing assembly, 91-a cooling channel, 92-a nozzle core, 93-a cooling ring cavity, 94-a cooling nozzle, 95-a high-temperature channel, 96-a high-temperature nozzle and 97-a clamping ring.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

The utility model provides an atomizing nozzle, is including being located the sieve in valve body outlet pipe middle part, and the sieve is perpendicular with valve body outlet pipe axis, and the sieve middle part is equipped with can dismantle the nozzle core 92 of connection, is equipped with in the sieve along the radial cooling passageway 91 that extends of sieve and wear out the valve body lateral wall, and the position diameter that the nozzle core 92 lateral wall corresponds cooling passageway 91 reduces and form cooling ring chamber 93, a plurality of cooling spouts 94 of cooling ring chamber 93 lateral wall circumference equipartition. It can be understood that special nozzle core 82 makes the effective mixture of injection water and steam, reach rapid cooling's purpose, utilize steam pressure drop to make the air current accelerate, the length of cooling spout 94 is shorter and the speed of flow is higher, the heat exchange of steam and valve body can be ignored, can regard as the constant entropy of ideal to flow, the material stability of valve body has been improved, after steam flows through the throat of nozzle core bell mouth, the velocity of flow increases to being greater than the sound velocity, the steam of high-speed flow makes the desuperheating water atomizing in the twinkling of an eye, the atomizing region is in valve lower part cavity, the atomizing is even and the distribution is especially even, thereby realize rapid cooling.

Further, the cooling nozzles 94 include a plurality of layers that are uniformly distributed in the axial direction and a plurality of rows that are uniformly distributed in the circumferential direction. It can be understood that the plurality of layers which are uniformly distributed in the axial direction can remove and atomize the desuperheating water in the cooling ring cavity 93 as soon as possible, and the plurality of rows which are uniformly distributed in the circumferential direction can ensure that the reaction force to the nozzle core 92 and the sieve plate is uniformly distributed when the desuperheating water is discharged, so that stress concentration and vibration noise are avoided.

Further, the nozzle core 92 is necked down at the middle of the inner sidewall to form a bell-mouth shaped passage. It can be understood that the inner side wall of the nozzle core 92 is flared, and supersonic speed can be achieved only when high-temperature steam passes through the throat of the flare, so that rapid and uniform atomization of the desuperheating water is realized.

Further, the periphery of the nozzle core 92 is provided with a plurality of high temperature channels 95 which are uniformly distributed on the circumference, the lower end of each high temperature channel 95 faces the outer side wall of the nozzle core 92, and the position of the nozzle core 92 corresponding to the high temperature channels 95 is provided with a high temperature nozzle 96. It can be understood that the high-temperature channel 95 and the high-temperature nozzle 96 can guide high-temperature steam to the bell mouth of the nozzle core 92, the atomized cooling water is used for rapidly cooling the high-temperature steam, and the pressure auxiliary clamping ring 97 can also be used for pressing the high-temperature steam axially.

Furthermore, the upper part of the outer side wall of the nozzle core 92 is provided with a buckling ring 97, and the position of the buckling ring 97 corresponding to the high-temperature nozzle 96 is provided with a through hole. Furthermore, an inner convex edge is arranged on the upper portion of the inner side wall of the buckling ring 97, a concave cavity is arranged at the position, corresponding to the inner convex edge, of the nozzle core 92, and a circumferential positioning mechanism is arranged between the outer side wall of the buckling ring 97 and the sieve plate. It can be understood that the clamping ring 97 is arranged to lock the axial position of the nozzle core 92, meanwhile, noise caused by vibration of the nozzle core 92 can be avoided, the circumferential positioning mechanism can be a perforation screw, a perforation pin and the like, it can be guaranteed that a through hole formed in the clamping ring 97 can correspond to the high-temperature nozzle 96, and circumferential vibration and noise can also be avoided.

Further, the end of the cooling channel 91 extending out of the valve body is connected to the cooling pipe joint 14. It can be understood that the outer end of the cooling channel 91 is connected with the cooling pipe joint 14, and the cooling water is injected into the cooling ring cavity 93 through the cooling pipe joint 14.

As shown in fig. 6, the application of the atomizing nozzle in the bypass valve is shown, the whole atomizing assembly 9 and the sieve plate are located in the lower valve body 12, the valve cavity behind the sieve plate is separated into a tail cavity 18 for cooling, the upper portion of the lower valve body 12 is provided with the upper valve body 11, the upper valve body 11 is internally provided with the valve cage assembly 6, the lower end of the valve cage assembly 6 is sleeved on the periphery of the atomizing assembly 9, high-temperature steam in the valve cage assembly 6 can smoothly flow into the atomizing assembly 6, and the valve cage assembly 6 is internally provided with the valve core assembly 5 capable of controlling the opening and closing state and the flow rate.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

It is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention, and are not intended to indicate or imply that the claimed components or mechanisms must be in a particular orientation, constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only an embodiment of the present invention, and should not be used to limit the protection scope of the present invention, any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an atomizing nozzle, its characterized in that, is including the sieve that is located valve body outlet pipe middle part, the sieve is perpendicular with valve body outlet pipe axis, the sieve middle part is equipped with nozzle core (92) that can dismantle the connection, be equipped with in the sieve along sieve radial extension and wear out cooling passageway (91) of valve body lateral wall, the position diameter that nozzle core (92) lateral wall corresponds cooling passageway (91) reduces and forms cooling ring chamber (93), a plurality of cooling spouts (94) of cooling ring chamber (93) lateral wall circumference equipartition.

2. An atomiser nozzle as claimed in claim 1, characterised in that the cooling jets (94) comprise a plurality of axially equispaced layers and a plurality of circumferentially equispaced rows.

3. An atomiser nozzle as claimed in claim 1, characterised in that the nozzle core (92) is necked-down in the middle of its inner side wall to form a flared passage.

4. An atomizing nozzle according to claim 1, characterized in that a plurality of high temperature channels (95) are uniformly distributed on the periphery of the nozzle core (92), the lower end of each high temperature channel (95) faces the outer side wall of the nozzle core (92), and the nozzle core (92) is provided with high temperature nozzles (96) corresponding to the positions of the high temperature channels (95).

5. An atomizing nozzle according to claim 4, characterized in that, the upper portion of the outer side wall of the nozzle core (92) is provided with a retaining ring (97), and the position of the retaining ring (97) corresponding to the high temperature nozzle (96) is provided with a through hole.

6. An atomizing nozzle according to claim 5, characterized in that, the upper portion of the inner side wall of the clamping ring (97) is provided with an inner convex edge, the position of the nozzle core (92) corresponding to the inner convex edge is provided with a concave cavity, and a circumferential positioning mechanism is arranged between the outer side wall of the clamping ring (97) and the sieve plate.

7. An atomiser nozzle as claimed in claim 1, characterised in that the end of the cooling channel (91) which projects beyond the valve body is connected to a cooling pipe connection (14).