CN220072024U

CN220072024U - Vortex atomizing temperature and pressure reducer with adjustable nozzle

Info

Publication number: CN220072024U
Application number: CN202321258682.7U
Authority: CN
Inventors: 朱粉华; 邹喜; 范小娟
Original assignee: Wuxi Xhk Valve Co ltd
Current assignee: Wuxi Xhk Valve Co ltd
Priority date: 2023-05-22
Filing date: 2023-05-22
Publication date: 2023-11-24
Anticipated expiration: 2033-05-22

Abstract

The utility model relates to an adjustable nozzle vortex type atomization temperature and pressure reducing device, which comprises an actuator and further comprises: the valve body is arranged on the main steam pipe, and the actuator is arranged at the top of the valve body; the valve rod is movably arranged on the valve body and is connected with the actuator; the valve core is connected with the valve rod; the sleeve is arranged at the bottom of the valve body and is positioned in the main steam pipe, a plurality of atomization through holes and a plurality of water spray holes are formed in the sleeve, each water spray hole is communicated with a plurality of atomization through holes, and the valve core is movably inserted in the sleeve; the nozzles are arranged on the water spraying holes and correspond to the water spraying holes one by one; the executor is used for driving the valve core to open the corresponding number of atomization through holes according to the temperature and the pressure of the secondary steam to adjust the flow and the pressure of the desuperheating water sprayed out by the nozzle. The vortex type atomization temperature and pressure reducer with the adjustable nozzle can effectively adjust the pressure and the temperature of secondary steam, and has the advantages of high adjustment precision, low cost, safety, reliability, low noise and long service life in use.

Description

Vortex atomizing temperature and pressure reducer with adjustable nozzle

Technical Field

The utility model relates to a temperature and pressure reducer, in particular to a vortex type atomization temperature and pressure reducer with an adjustable nozzle.

Background

The temperature and pressure reducer has wide application in industrial production and is mainly applied to the fields of power stations, light spinning, petroleum industry and the like. The device can regulate the pressure and the temperature of steam, is an important device for reducing severe vibration and noise generated by high-pressure and high-speed steam, and is an important component in a steam discharge system. The temperature and pressure reducer is therefore critical for stable operation of the vapor discharge system.

As shown in FIG. 5, in the conventional temperature and pressure reducing device, only one nozzle is arranged in a main steam pipe, and a valve core is only used for switching, so that the flow of the temperature reducing water cannot be effectively regulated, and the temperature of secondary steam cannot be regulated; meanwhile, the system has defects in the aspects of safety, reliability and regulation performance, the performance of the system is difficult to meet the use requirement under complex and harsh working conditions, the noise is very high in the running process, and the service life is relatively short.

Disclosure of Invention

In order to solve the problems, the utility model provides the adjustable nozzle vortex type atomization temperature-reducing pressure reducer which can adjust the flow of the temperature-reducing water in real time according to the needs, further accurately control the temperature of secondary steam, has low noise and long service life, and has the specific technical scheme that:

the swirl atomizing temperature and pressure reducer with the adjustable nozzle comprises an actuator and further comprises: the valve body is arranged on the main steam pipe, and the actuator is arranged at the top of the valve body; the valve rod is movably arranged on the valve body and is connected with the actuator; the valve core is connected with the valve rod; the sleeve is arranged at the bottom of the valve body and is positioned in the main steam pipe, a plurality of atomization through holes and a plurality of water spray holes are formed in the sleeve, each water spray hole is communicated with a plurality of atomization through holes, and the valve core is movably inserted in the sleeve; the nozzles are arranged on the water spraying holes and correspond to the water spraying holes one by one; the actuator is used for driving the valve core to open a corresponding number of the atomization through holes according to the temperature and the pressure of the secondary steam so as to adjust the flow and the pressure of the temperature-reduced water sprayed out through the nozzle.

By adopting the technical scheme, as the nozzles are automatically adjusted to be opened one by one according to the size of the injected temperature-reducing water quantity, the pressure difference on each nozzle is the same under different flow working conditions, so that the opened nozzles can be ensured to achieve the optimal atomization effect, the temperature of the secondary steam is almost free from fluctuation, and the control precision is high. Due to the fact that the plurality of atomization through holes are adopted, atomization control precision is improved.

The nozzles of the temperature and pressure reducer can be arranged and combined at will according to the magnitude of CV values, the common flow characteristic is linear, the small CV nozzles can be arranged in small opening degree and the large CV nozzles are arranged in large opening degree according to the working condition of large adjustable ratio, the flow characteristic is designed into a multi-section broken line shape so as to meet the control occasion with wider steam flow range, and therefore the temperature and pressure reducer has oversized adjustable bit property.

Preferably, a diverter ring is arranged on the nozzle, a plurality of diverter grooves are arranged on the diverter ring, and the diverter ring and the atomizing through hole are oppositely arranged.

Through adopting above-mentioned technical scheme, the splitter box is used for the reposition of redundant personnel, forms many runners, plays reposition of redundant personnel depressurization's effect to reduce the decompression water and directly enter into the orifice at nozzle center, guarantee atomization effect.

Preferably, the valve further comprises a plurality of sealing rings, wherein the sealing rings are installed on the valve core and are movably inserted on the sleeve.

By adopting the technical scheme, the sealing ring improves the tightness with the sleeve.

Preferably, the valve further comprises a valve seat, the valve seat is arranged at the top of the sleeve, the valve core is movably inserted on the valve seat, and a sealing conical surface matched with the valve seat is arranged on the valve core.

By adopting the technical scheme, the valve seat is used for being matched with the valve core, so that the switch of the temperature and pressure reducer is realized, and the tightness is improved.

Preferably, the method further comprises: the bracket is respectively connected with the actuator and the valve body; the clamping block is respectively connected with the push rod of the actuator and the valve rod; and the positioner is respectively connected with the clamping block and the actuator.

By adopting the technical scheme, the positioner can improve the control precision.

Preferably, the method further comprises: and the connecting sleeve is respectively connected with the valve body and the sleeve.

Through adopting above-mentioned technical scheme, the adapter sleeve makes things convenient for the sleeve to be connected with the valve body, makes easy dismounting.

Preferably, an upper connecting flange is arranged on the valve body, a lower connecting flange is arranged on the main steam pipe, and the upper connecting flange is connected with the lower connecting flange.

Preferably, the valve body is provided with a liquid inlet flange.

Compared with the prior art, the utility model has the following beneficial effects:

the vortex type atomization temperature-reducing pressure reducer with the adjustable nozzle can effectively adjust the pressure and the temperature of secondary steam, and has the advantages of high adjustment precision, low cost, safety, reliability, low noise during use and long service life.

Drawings

FIG. 1 is a schematic structural view of an embodiment;

FIG. 2 is an assembled cross-sectional view of the sleeve, valve cartridge, valve seat and nozzle;

FIG. 3 is a schematic view of the structure of the nozzle;

FIG. 4 is a cross-sectional view of a nozzle;

fig. 5 is a schematic diagram of a conventional temperature and pressure reducer.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings.

As shown in fig. 1 to 4, the nozzle 7 is installed at one side of the sleeve 5, the adjustable valve core 3 is installed in the sleeve 5, when the temperature-reducing water enters the temperature-reducing pressure reducer, the pressure difference exists between the front and the rear of the nozzle 7, the valve core 3 moves downwards under the action of the actuator 91 and opens the atomizing nozzles 7 one by one, so that the temperature-reducing water is sprayed out from the spraying holes 71 to form an extremely thin atomized water skirt. When the flow rate of the desuperheating water changes, the pressure difference between the front and the rear of the nozzle 7 also changes, the downward movement amount of the valve core 3 changes along with the change, and the flow rate of the desuperheating water also changes correspondingly, so that the spraying speed of the nozzle 7 keeps constant, the sprayed desuperheating water is fully atomized before contacting the inner wall of the valve and the pipeline, and the mode hardly impacts the shell and the pipeline, thereby not only prolonging the service life of the valve, but also reducing noise.

Specifically, the adjustable nozzle swirl type atomization temperature and pressure reducing device comprises an actuator 91, a positioner 93, a valve body 1, a valve rod 2, a valve core 3, a sleeve 5, a sealing ring 61 and a valve seat 4. The main steam pipe 8 is provided with a lower connecting flange 81, the valve body 1 is provided with an upper connecting flange 11, and the upper connecting flange 11 is connected with the lower connecting flange 81. The bottom of valve body 1 is located the inside of main steam pipe 8, and the bottom of valve body 1 is connected with sleeve 5 through adapter sleeve 63, and the both ends of adapter sleeve 63 all are equipped with the internal thread, and adapter sleeve 63 makes things convenient for the dismouting of sleeve 5. The valve seat 4 is annular, and the valve seat 4 is arranged between the sleeve 5 and the valve body 1. One side of the top of the valve body 1 is provided with a liquid inlet flange 13, the liquid inlet flange 13 is used for being connected with a temperature-reducing water pipeline, and the upper connecting flange 11 and the liquid inlet flange 13 enable the temperature-reducing pressure reducer to be convenient to install. The top of the valve body 1 is provided with a bracket 94, the top of the bracket 94 is provided with an actuator 91, the actuator 91 is a pneumatic actuator, and the actuator 91 is provided with a pressure reducing valve 95. The valve rod 2 is movably inserted on the valve body 1, and a packing 62 for sealing is installed between the valve rod and the valve body 1. The valve rod 2 is connected to a push rod 911 of the actuator 91 via a clamp block 92, and the positioner 93 is connected to the clamp block 92 and the actuator 91, respectively.

As shown in fig. 2, the sleeve 5 is provided with a valve hole 51, and a pressure relief hole 52, an atomization through hole 53 and a water spray hole 54 which are all communicated with the valve hole 51. The valve hole 51 is positioned at the center of the sleeve 5, the valve core 3 is movably inserted in the valve hole 51 to form a plunger structure, the valve core 3 is connected with the valve rod 2, the valve core 3 is provided with a plurality of sealing rings 61, and the sealing rings 61 are movably inserted between the valve core 3 and the valve hole 51 and are used for sealing the valve core 3 and the valve hole 51. The water spray holes 54 are provided along the axis of the sleeve 5 and are located at the outer circumferential surface of the sleeve 5, and the water spray holes 54 are provided in plurality for mounting the nozzles 7. The atomizing through holes 53 are small holes, a plurality of atomizing through holes 53 are arranged along the axis array, and can be arranged along the radial array at the same time, and the atomizing through holes 53 are communicated with the water spraying holes 54 and are used for realizing the flow and pressure control of the depressurized water in cooperation with the valve core 3. The pressure release hole 52 is located the bottom of sleeve 5 for make valve opening 51 communicate with each other with main steam pipe 8, be used for preventing the pressure build-up in sleeve 5 when the valve is closed, and then lead to the too big condition of executor 91 thrust to take place, improved the reliability of control.

As shown in fig. 3 and 4, a spray hole 71 is formed in the center of the nozzle 7, a split ring 72 is formed at one end of the nozzle 7, two split grooves 73 are formed in the split ring 72, and the split grooves 73 are communicated with the spray hole 71. The outer circular surface of the nozzle 7 is provided with external threads, the nozzle 7 is installed in the water spraying holes 54 through threads, the nozzle 7 corresponds to the water spraying holes 54 one by one, and the diverter ring 72 is arranged opposite to the atomization through holes 53. The diversion grooves 73 are used for diversion to form a plurality of flow channels, play a role in diversion and depressurization, reduce the pressure reduction water from directly entering the spray hole in the center of the nozzle 7 and ensure the atomization effect.

The valve core 3 is also movably inserted on the valve seat 4, the valve core 3 is provided with a sealing conical surface 31 matched with the valve seat 4 and used for being matched with the valve seat 4 to realize the opening and closing of the valve, and the sealing performance is good.

The actuator 91 is used for driving the valve core 3 to open the corresponding number of atomization through holes 53 according to the temperature and the pressure of the secondary steam to adjust the flow and the pressure of the de-ionized water sprayed out through the nozzle 7.

The nozzles 7 are automatically adjusted to be opened one by one according to the injected temperature-reducing water quantity, and the pressure difference on each nozzle 7 is the same under different flow working conditions, so that the opened nozzles 7 can achieve the optimal atomization effect, the temperature of the secondary steam is almost free from fluctuation, and the control precision is high. Since the plurality of atomizing through holes 53 are employed, the control accuracy of atomization is improved.

The nozzles 7 of the temperature and pressure reducer can be arranged and combined at will according to the CV value, the normal flow characteristic is linear, the small CV nozzle 7 can be arranged in the small opening degree and the large CV nozzle 7 can be arranged in the large opening degree according to the working condition of large adjustable ratio, the flow characteristic is designed into a multi-section fold line shape so as to meet the control occasion with wider steam flow range, and therefore the temperature and pressure reducer has oversized adjustable bit.

The vortex type atomization temperature and pressure reducing device with the adjustable nozzles integrates a temperature reducing water control valve and a plurality of atomization nozzles, and has the advantages of small volume, no need of a temperature reducing water loop, convenient field installation and high control precision.

The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will occur to those skilled in the art from consideration of the specification and practice of the utility model without the need for inventive faculty, and are within the scope of the claims.

Claims

1. The utility model provides an adjustable nozzle swirl atomizing temperature and pressure reducer, includes executor (91), its characterized in that still includes:

the valve body (1), the said valve body (1) is installed on main steam pipe (8), the said actuator (91) is installed on the top of the said valve body (1);

the valve rod (2) is movably arranged on the valve body (1) and is connected with the actuator (91);

the valve core (3) is connected with the valve rod (2);

the sleeve (5) is arranged at the bottom of the valve body (1) and is positioned in the main steam pipe (8), a plurality of atomization through holes (53) and a plurality of water spraying holes (54) are formed in the sleeve (5), each water spraying hole (54) is communicated with a plurality of atomization through holes (53), and the valve core (3) is movably inserted in the sleeve (5); and

The nozzles (7) are arranged on the water spraying holes (54) and correspond to the water spraying holes (54) one by one;

the actuator (91) is used for driving the valve core (3) to open a corresponding number of atomization through holes (53) according to the temperature and the pressure of the secondary steam so as to adjust the flow and the pressure of the desuperheating water sprayed out through the nozzle (7).

2. The adjustable nozzle vortex type atomization temperature and pressure reducer according to claim 1, wherein a flow dividing ring (72) is arranged on the nozzle (7), a plurality of flow dividing grooves (73) are arranged on the flow dividing ring (72), and the flow dividing ring (72) is arranged opposite to the atomization through hole (53).

3. The adjustable nozzle swirl atomizing temperature and pressure reducer according to claim 1, further comprising a plurality of sealing rings (61), wherein the sealing rings (61) are mounted on the valve core (3) and are movably inserted on the sleeve (5).

4. The adjustable nozzle swirl atomizing temperature-reducing pressure reducer according to claim 1, further comprising a valve seat (4), wherein the valve seat (4) is mounted on the top of the sleeve (5), the valve core (3) is movably inserted on the valve seat (4), and a sealing conical surface (31) matched with the valve seat (4) is arranged on the valve core (3).

5. The adjustable nozzle swirl atomizing temperature and pressure reducer according to any one of claims 1 to 4, further comprising:

a bracket (94), wherein the bracket (94) is respectively connected with the actuator (91) and the valve body (1);

a clamping block (92), wherein the clamping block (92) is respectively connected with a push rod of the actuator (91) and the valve rod (2); and

And the positioner (93) is respectively connected with the clamping block (92) and the actuator (91).

6. The adjustable nozzle swirl atomizing temperature and pressure reducer according to any one of claims 1 to 4, further comprising:

the connecting sleeve (63), the connecting sleeve (63) is respectively connected with the valve body (1) and the sleeve (5).

7. The adjustable nozzle swirl atomizing temperature and pressure reducer according to any one of claims 1 to 4, characterized in that an upper connecting flange (11) is provided on the valve body (1), a lower connecting flange (81) is provided on the main steam pipe (8), and the upper connecting flange (11) is connected with the lower connecting flange (81).

8. The adjustable nozzle swirl atomizing temperature and pressure reducer according to any one of claims 1 to 4, characterized in that the valve body (1) is provided with a liquid inlet flange (13).

9. The adjustable nozzle swirl atomizing temperature and pressure reducer according to any one of claims 1 to 4, characterized in that the bottom of the sleeve (5) is provided with a pressure relief hole (52) communicating with the main steam pipe (8).