CN213901036U

CN213901036U - Back pressure type inserted desuperheater

Info

Publication number: CN213901036U
Application number: CN202022917496.2U
Authority: CN
Inventors: 盖阔; 董�成; 郁学军
Original assignee: Wuxi Score Automatic Control Equipment Co ltd
Current assignee: Wuxi Score Automatic Control Equipment Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-08-06
Anticipated expiration: 2030-12-08

Abstract

The utility model discloses a back pressure type inserts desuperheater, it includes: a valve assembly; the nozzle assembly comprises a nozzle body which is fixed at the mounting hole and provided with a through hole at the center, and a valve core mechanism which is adjustably inserted in the mounting hole and is matched and sealed with the nozzle body, wherein the nozzle body is also provided with a plurality of circulation holes which are communicated with the through hole and the flow passage. The valve component and the nozzle component which adopt specific structures are matched, the structure is simple, the mixing ratio of the temperature-reducing water and the steam can be adjusted according to the flow of the temperature-reducing water, and the mixing effect is favorably improved.

Description

Back pressure type inserted desuperheater

Technical Field

The utility model belongs to the technical field of the desuperheater, a bayonet desuperheater is related to, concretely relates to back pressure type inserts desuperheater.

Background

The utility model discloses a chinese utility model patent of application number 201220629444.8 discloses a steam desuperheater, this steam desuperheater include with the fixed water spray seat of water pipe, be provided with on the water spray seat with the communicating trompil of water pipe, wear to be equipped with the piece that slides that promotes by the interior rivers of water pipe on the trompil, constitute the spout that sprays steam between the head of piece and the trompil, slide a connection reset spring. The steam desuperheater has good vaporization effect and short length in a low-load state; but the structure is complex and the assembly difficulty is high.

Disclosure of Invention

The utility model aims at overcoming the defects of the prior art and providing a back pressure type insertion desuperheater.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a back pressure insertion desuperheater, comprising:

the valve assembly comprises a pipe body, a first mounting flange formed in the middle of the outer wall of the pipe body, a second mounting flange arranged at one end of the pipe body, a spray head arranged at the other end of the pipe body and a flow passage; a mounting hole is formed in the side face of the spray head, a plurality of flange holes are formed in the second mounting flange, and the flow channel penetrates through the second mounting flange and the pipe body and extends to be communicated with the mounting hole;

the nozzle assembly comprises a nozzle body which is fixed at the mounting hole and provided with a through hole at the center, and a valve core mechanism which is adjustably inserted in the mounting hole and is matched and sealed with the nozzle body, wherein the nozzle body is also provided with a plurality of circulation holes which are communicated with the through hole and the flow passage.

Preferably, the valve core mechanism comprises a valve core which is arranged in the through hole in a penetrating manner and extends into the flow channel, a locking nut which is arranged at the inner end part of the valve core and is positioned in the flow channel, an adjusting nut which is arranged on the valve core and is positioned between the locking nut and the nozzle body, and a spring which is sleeved on the valve core and is positioned between the adjusting nut and the nozzle body.

Furthermore, the valve core comprises a rod body penetrating through the through hole, a sealing cone formed at the outer end part of the rod body and a groove hole formed in the end face of the sealing cone.

Preferably, the nozzle body comprises a sealing cylinder embedded in the mounting hole and sealed with the spray head and a fixing cylinder formed on the end face of the sealing cylinder and fixed on the side face of the spray head, and the through hole penetrates through the fixing cylinder and the sealing cylinder.

Further, a plurality of the circulation holes are arranged around the through hole in a surrounding mode; each circulation hole comprises a first hole section arranged in the fixed column body and a second hole section arranged in the sealed column body and communicated with the first hole section, and the first hole section is obliquely arranged.

Optimally, the pipe body is formed by smoothly connecting a first pipe section and a second pipe which are perpendicular to each other, the second mounting flange is mounted at the free end of the first pipe section, the first mounting flange is formed on the circumferential surface of the second pipe, and the spray head is mounted at the free end of the second pipe.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the utility model discloses back pressure type inserts desuperheater, cooperates through valve module and the nozzle assembly who adopts specific structure, and simple structure can be favorable to improving the mixed effect according to the mixing ratio of desuperheating water flow control desuperheating water and steam.

Drawings

FIG. 1 is a schematic view of a back pressure type insertion desuperheater of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a schematic view of the back pressure type inserted desuperheater nozzle body of the present invention;

fig. 5 is a side view of fig. 4.

Detailed Description

The invention will be further described with reference to examples of embodiments shown in the drawings.

The back pressure insertion desuperheater shown in fig. 1 to 5 mainly includes a valve assembly 1 and a nozzle assembly 2, etc. which are used in cooperation.

The valve assembly 1 includes a pipe body 11, a first mounting flange 12, a second mounting flange 13, a nozzle 14, a flow passage 15, and the like. The first mounting flange 12 is formed at the middle of the outer wall (i.e., the outer circumferential surface) of the pipe body 11, and may be formed by integral molding or welding; the first mounting flange 12 is adapted to interface with a steam carrying conduit to mount the entire back pressure insert desuperheater on the steam carrying conduit and to enable a portion of the back pressure insert desuperheater to be inserted into the conduit. The second mounting flange 13 is mounted at one end of the pipe body 11, and has a plurality of flange holes 131, which may be connected to a pipeline for transporting the desuperheating water through a plurality of bolts. The nozzle 14 is installed at the other end of the pipe body 11, and a side surface thereof is provided with an installation hole 141; when the back pressure type insert desuperheater is installed on the pipeline for conveying steam, the nozzle is accommodated in the pipeline. The flow channel 15 penetrates through the second mounting flange 13 and the pipe body 11 and extends to be communicated with the mounting hole 141; that is, the flow passage 15 passes through the second mounting flange 13, extends from one end of the pipe body 11 to the other end thereof, and communicates with the mounting hole 141 for inflow of the temperature-reduced water.

The nozzle assembly 2 includes a nozzle body 21 fixed at the mounting hole 141 and centrally opened with a through hole 20, and a valve core mechanism 22 adjustably inserted in the mounting hole 141 and fittingly sealed with the nozzle body 21, the through hole 20 not having a regular shape as a conventional one but corresponding to the valve core mechanism 22. The nozzle body is also provided with a plurality of circulation holes which are communicated with the through hole 20 and the flow passage 15, and the plurality of circulation holes are arranged around the through hole 20.

In the present embodiment, the valve core mechanism 22 includes a valve core 221 disposed in the through hole 20 and extending into the flow passage 15, a lock nut 222 mounted at an inner end of the valve core 221 and located in the flow passage 15, an adjusting nut 223 mounted on the valve core 221 and located between the lock nut 222 and the nozzle body 21, and a spring 224 sleeved on the valve core 221 and located between the adjusting nut 223 and the nozzle body 21; thus, the temperature-reduced water applies pressure to the valve element 221 through the flow hole to deform the valve element 221 against the elastic force of the spring 224, and at this time, the sealing state of the valve element 221 and the nozzle body 21 is released, and the temperature-reduced water flows into the pipe for conveying steam to be mixed with the steam.

In this embodiment, the valve plug 221 includes a rod 2211 inserted into the through hole 20, a sealing cone 2212 formed at an outer end of the rod 2211, and a slot 2213 formed in an end surface of the sealing cone 2212; the through hole 20 is shaped to correspond to the valve core 221 to facilitate sealing. The nozzle body 21 includes a sealing cylinder 212 inserted into the mounting hole 141 and sealed with the head 14, and a fixing cylinder 211 formed on an end surface of the sealing cylinder 212 and fixed to a side surface of the head 14 (fixed by welding), and the through hole 20 penetrates through the fixing cylinder 211 and the sealing cylinder 212. Each circulation hole comprises a first hole section 215 arranged in the fixed cylinder 211 and a second hole section 214 arranged in the sealing cylinder 212 and communicated with the first hole section 215, and the first hole section 215 is obliquely arranged and gradually increased in diameter from inside to outside, so that the spraying of the temperature-reducing water is facilitated. The pipe body 11 is formed by smoothly connecting a first pipe section and a second pipe section which are perpendicular to each other, a second mounting flange 13 is mounted at the free end of the first pipe section, a first mounting flange 12 is formed on the circumferential surface of the second pipe section, and a spray head 14 is mounted at the free end of the second pipe section.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A back pressure insertion desuperheater, comprising:

the valve assembly (1) comprises a pipe body (11), a first mounting flange (12) formed in the middle of the outer wall of the pipe body (11), a second mounting flange (13) mounted at one end of the pipe body (11), a spray head (14) mounted at the other end of the pipe body (11) and a flow channel (15); a mounting hole (141) is formed in the side face of the spray head (14), a plurality of flange holes (131) are formed in the second mounting flange (13), and the flow channel (15) penetrates through the second mounting flange (13) and the pipe body (11) and extends to be communicated with the mounting hole (141);

the nozzle assembly (2) comprises a nozzle body (21) which is fixed at the mounting hole (141) and provided with a through hole (20) in the center, and a valve core mechanism (22) which is adjustably inserted into the mounting hole (141) and is matched and sealed with the nozzle body (21), wherein the nozzle body is further provided with a plurality of through holes for communicating the through hole (20) with the flow channel (15).

2. A back pressure insertion desuperheater of claim 1, wherein: the valve core mechanism (22) comprises a valve core (221) which is arranged in the through hole (20) in a penetrating mode and extends into the flow channel (15), a locking nut (222) which is installed at the inner end portion of the valve core (221) and is located in the flow channel (15), an adjusting nut (223) which is installed on the valve core (221) and is located between the locking nut (222) and the nozzle body (21), and a spring (224) which is sleeved on the valve core (221) and is located between the adjusting nut (223) and the nozzle body (21).

3. A back pressure insertion desuperheater of claim 2, wherein: the valve core (221) comprises a rod body (2211) penetrating through the through hole (20), a sealing cone (2212) formed at the outer end of the rod body (2211), and a groove hole (2213) formed in the end face of the sealing cone (2212).

4. A back pressure insertion desuperheater of claim 1, wherein: the nozzle body (21) comprises a sealing cylinder (212) which is embedded into the mounting hole (141) and sealed with the spray head (14) and a fixing cylinder (211) which is formed on the end face of the sealing cylinder (212) and fixed on the side face of the spray head (14), and the through hole (20) penetrates through the fixing cylinder (211) and the sealing cylinder (212).

5. A back pressure insertion desuperheater of claim 4, wherein: the plurality of flow holes are arranged around the through hole (20); each circulation hole comprises a first hole section (215) arranged in the fixed cylinder (211) and a second hole section (214) arranged in the sealing cylinder (212) and communicated with the first hole section (215), and the first hole section (215) is obliquely arranged.

6. A back pressure insertion desuperheater of claim 1, wherein: body (11) are formed by mutually perpendicular first pipeline section and second pipeline smooth connection, second mounting flange (13) are installed the free end of first pipeline section, first mounting flange (12) are formed on the global of second pipeline, shower nozzle (14) are installed the free end of second pipeline.