CN118257865A - Be used for steam system atomizing integral type to subtract temperature pressure relief device - Google Patents

Abstract

The invention relates to the technical field of temperature and pressure reducing valves and provides an atomization integrated temperature and pressure reducing device for a steam system, which comprises a valve body, wherein a valve seat is arranged in the valve body, the upper end surface of the valve seat is fixedly connected with a valve core, a pressure reducing mechanism is arranged below the valve core, a temperature reducing mechanism is arranged below the pressure reducing mechanism, the upper end surface of the valve core is fixedly connected with a valve rod, one end of the valve rod, which is far away from the valve body, is provided with a driving mechanism, the bottom of the valve body is provided with a cooling water pipe, one end of the valve body is communicated with a steam inlet pipe, and the other end of the valve body is communicated with a steam outlet pipe; according to the invention, through reasonable application of the decompression mechanism, the valve rod is driven to move through the driving mechanism, the valve rod is driven to move upwards, the valve core is driven to move upwards in the fixed pipe, and the side wall of the valve core is rotationally connected with the connecting rod, so that the blocking block is driven by the connecting rod to move in a direction away from the first orifice, the first orifice is not blocked by the blocking block, steam can smoothly pass through the first orifice, the flow speed of the steam is increased, and the decompression effect is realized.

Description

Be used for steam system atomizing integral type to subtract temperature pressure relief device

Technical Field

The invention relates to the technical field of temperature and pressure reducing valves, in particular to an integrated temperature and pressure reducing device for steam system atomization.

Background

Vapor, also known as water vapor, is formed by liquid molecules entering the upper space through the liquid surface as vapor molecules as the liquid evaporates in the confined enclosed space; according to the influence of pressure and temperature on various types of steam, the steam is divided into saturated steam and superheated steam; the main applications of the steam include heating, humidifying, generating power, driving and the like; some plants use a temperature and pressure reducing device to reduce the temperature and pressure of steam.

The temperature and pressure reducing device is a steam heat energy parameter (pressure, temperature) converting device and an energy saving device utilizing waste heat widely applied to heat energy engineering of enterprises such as cogeneration, central heating (or steam supply) and light industry, electric power, chemical industry, textile industry and the like in modern industry, and the steam parameter provided by a user is reduced to proper temperature and pressure required by the user through the temperature and pressure reducing device so as to meet the requirement of the user, and heat energy can be fully saved and reasonably used.

In the pressure reducing process of the existing temperature and pressure reducing device, if the outlet pressure is instantaneously increased, the temperature and pressure fluctuation of steam at the outlet are larger, so that the quality of products can be influenced, and equipment can be damaged; in addition, when the steam is mixed with the cooling, the two devices are simply mixed together, and an effective mechanical mixing mode is lacked, so that the cooling effect on the steam is not obvious. In order to solve these problems, it is necessary to further optimize the design of the temperature and pressure reducing device to improve its conditioning performance and mixing effect.

In summary, the present invention provides an integrated vapor system atomization temperature and pressure reduction device.

Disclosure of Invention

The invention provides an integrated temperature and pressure reducing device for steam system atomization, which solves the problems that the pressure of a steam system cannot be slowly regulated and the cooling effect of steam is not obvious in the prior art by controlling the flow direction and speed of steam and controlling the spraying quantity and speed of mist.

The prior art scheme of the invention is as follows:

The integrated atomization temperature and pressure reducing device for the steam system comprises a valve body, wherein a valve seat is arranged in the valve body, a valve core is fixedly connected to the upper end face of the valve seat, a pressure reducing mechanism is arranged below the valve core, a temperature reducing mechanism is arranged below the pressure reducing mechanism, a valve rod is fixedly connected to the upper end face of the valve core, a driving mechanism is arranged at one end, far away from the valve body, of the valve rod, a cooling water pipe is arranged at the bottom of the valve body, one end of the valve body is communicated with a steam inlet pipe, and the other end of the valve body is communicated with a steam outlet pipe;

The pressure reducing mechanism comprises a fixed pipe, the fixed pipe penetrates through the valve core, the outer wall of the fixed pipe is in sliding sealing connection with the inner wall of the valve core, the side wall of the valve core is rotationally connected with two connecting rods, one end, far away from the valve core, of each connecting rod is rotationally connected with a shielding block, a throttle screen is fixedly connected to the fixed pipe, the fixed pipe is located at the center of the bottom end of the inner wall of the throttle screen, and a plurality of first throttle holes are formed in the side wall of the throttle screen.

Further, the temperature reducing mechanism comprises a net disc, the upper end face of the net disc is fixedly connected with the bottom end of the fixed pipe, a mist nozzle is arranged below the net disc, the lower portion of the mist nozzle is communicated with a cooling water pipe, the cooling water pipe provides moisture for the mist nozzle, the mist nozzle is facilitated to spray water mist outwards, the mist nozzle is mixed with steam, and the cooling effect is achieved.

Further, the slot hole has been seted up to throttle screen inner wall bottom, shelter from piece bottom sliding connection in the slot hole, just slot hole inner wall one side fixedly connected with flexible piece two, flexible piece two one end and shelter from piece one side fixed connection, drive flexible piece two same direction motions in shelter from the piece motion, avoid causing the pressure unstable at the in-process of motion, influence the normal clear of device.

Further, fixed pipe below lateral wall fixedly connected with flexible piece one, just the one end that fixed pipe was kept away from to flexible piece one is with shelter from piece fixed connection, drives flexible piece one and removes when shelter from the piece and remove to shelter from the dome, block the fog eruption, make the speed of fog eruption reduce, be favorable to fog and steam to mix.

Furthermore, the fixed pipe is provided with the second orifice, so that the fixed pipe is prevented from influencing the normal flow of steam, the diameter of the second orifice is larger than that of the first orifice, and the phenomenon that the normal flow of steam is influenced due to the fact that the diameter of the second orifice is too small is avoided.

Further, the choke plate is fixedly connected to the outer wall of the throttle screen, and is obliquely arranged, so that steam can flow downwards, and the choke plate is fully mixed with mist, and the effect of reducing temperature is achieved.

Furthermore, the lower part of the shielding block is of an inverse C shape, so that the shielding block can move in the long hole, the limiting effect is achieved, the shielding block is prevented from descending one by one, the normal operation of the device is influenced, the mist nozzle is a spiral nozzle, the spiral nozzle is designed to allow liquid to form vortex in the nozzle, the atomization effect is improved, the size of mist drops is reduced, and the spraying efficiency and quality are improved; meanwhile, the spiral nozzle can realize high-quality atomization, the diameter of the generated atomized liquid drops is smaller, the distribution is more uniform, and the spray effect is improved and the liquid waste is reduced.

Further, the diameter of the valve core is smaller than that of the throttling net cover, so that the valve core can move in the throttling net cover, normal operation of the device is achieved, the diameter of the bottom of the throttling net cover is equal to that of the net disc, liquid passing through the net disc can be fully mixed with steam, and cooling is facilitated.

Compared with the prior art, the invention has the following beneficial effects:

1. According to the invention, through reasonable application of the decompression mechanism, the valve rod is driven to move through the driving mechanism, the valve rod is driven to move upwards, the valve core is driven to move upwards in the fixed pipe, and the side wall of the valve core is rotationally connected with the connecting rod, so that the blocking block is driven by the connecting rod to move in a direction away from the first orifice, the first orifice is not blocked by the blocking block, steam can smoothly pass through the first orifice, the flow speed of the steam is increased, and the decompression effect is realized.

2. According to the invention, through reasonable application of the temperature reducing mechanism, namely when the shielding block moves in the direction away from the first orifice, the telescopic block is pushed to move in the direction of the fixed pipe, so that the holes on the net disc are gradually exposed, the blocking degree of a pair of mist nozzles of the telescopic block is reduced, the spraying amount and speed of the mist nozzles into the valve body are increased, the mixing of mist and steam is facilitated, and the temperature reducing effect of the steam system is facilitated.

Drawings

FIG. 1 is a schematic view of the front perspective of the overall device of the present invention;

FIG. 2 is a schematic perspective view of the pressure reducing mechanism of the present invention;

FIG. 3 is a schematic view of the front perspective of the overall device portion of the present invention;

FIG. 4 is a schematic perspective view of the entire apparatus of the present invention;

FIG. 5 is a schematic view showing a partial perspective structure of the pressure reducing mechanism of the present invention;

FIG. 6 is a schematic top view of a portion of the relief mechanism of the present invention;

FIG. 7 is a schematic view showing the internal perspective of the decompression mechanism of the present invention.

In the figure:

1. A valve body; 2. a valve seat; 3. a valve core; 4. a decompression mechanism; 40. a fixed tube; 400. an orifice II; 41. a connecting rod; 42. a shielding block; 43. a throttle screen; 430. an orifice I; 431. a long hole; 432. a second telescopic block; 433. a spoiler; 44. a first telescopic block; 5. a temperature reducing mechanism; 50. a net tray; 51. a mist nozzle; 6. a valve stem; 7. a driving mechanism; 8. a cooling water pipe; 9. a steam inlet pipe; 10. and a steam outlet pipe.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.

As shown in fig. 1-7, the invention provides an atomization integrated temperature and pressure reducing device for a steam system, which comprises a valve body 1, wherein a valve seat 2 is arranged in the valve body 1, the upper end surface of the valve seat 2 is fixedly connected with a valve core 3, a pressure reducing mechanism 4 is arranged below the valve core 3, a temperature reducing mechanism 5 is arranged below the pressure reducing mechanism 4, the upper end surface of the valve core 3 is fixedly connected with a valve rod 6, one end, far away from the valve body 1, of the valve rod 6 is provided with a driving mechanism 7, the driving mechanism 7 is an existing product, the bottom of the valve body 1 is provided with a cooling water pipe 8, one end of the valve body 1 is communicated with a steam inlet pipe 9, and the other end is communicated with a steam outlet pipe 10;

The decompression mechanism 4 comprises a fixed pipe 40, the fixed pipe 40 penetrates through the valve core 3, the outer wall of the fixed pipe 40 is in sliding sealing connection with the inner wall of the valve core 3, two connecting rods 41 are rotationally connected to the side wall of the valve core 3, one end, far away from the valve core 3, of each connecting rod 41 is rotationally connected with a shielding block 42, a throttle screen 43 is fixedly connected to the fixed pipe 40, the fixed pipe 40 is located at the center of the bottom end of the inner wall of the throttle screen 43, and a plurality of throttle holes 430 are formed in the side wall of the throttle screen 43.

Embodiment one:

in this embodiment, as shown in fig. 1-7, in general, steam enters the valve body 1 through the steam inlet pipe 9, and then flows toward the steam outlet pipe 10 through the first orifice 430, so as to control and regulate the steam. However, in the use process of the existing temperature and pressure reducing device, if the pressure of the outlet is instantaneously increased in the process of reducing pressure, the temperature and pressure fluctuation of steam at the outlet are large, which not only affects the product quality, but also may damage equipment.

The driving mechanism 7 can generate power in an electric, starting or hydraulic mode (the driving mechanism 7 refers to equipment or a device for controlling the movement of a valve, the opening and closing or regulating actions of the valve can be driven in an electric, pneumatic, hydraulic mode and the like to realize the normal operation and regulation of the temperature and pressure reduction device, the driving mechanism 7 is an existing product such as an electric actuator, a pneumatic actuator, a hydraulic actuator and the like, the valve rod 6 is driven to move upwards, the valve core 3 is driven to move upwards in the fixed pipe 40, and the side wall of the valve core 3 is rotationally connected with the connecting rod 41, so that the blocking block 42 moves away from the first orifice 430 under the driving of the connecting rod 41, the first orifice 430 is not blocked by the blocking block 42, steam can smoothly pass through the first orifice 430, the flow speed of the steam is increased, and the pressure reduction effect is realized.

It should be noted that: the fixed pipe 40 is provided with the second orifice 400, so that the steam can pass through the second orifice 400 to avoid the influence of the fixed pipe 40 on the normal flow of the steam, the diameter of the second orifice 400 is larger than that of the first orifice 430, the flow area of the steam passing through the second orifice 400 is relatively larger, and the encountered flow resistance is relatively smaller, so that the normal flow of the steam is not influenced.

By adjusting the relative positions of the shielding block 42 and the first orifice 430, the area of the steam flowing through the first orifice 430 is changed, so that the flow speed and the flow quantity of the steam are changed, and the effect of slow decompression is realized; when the gap between the baffle block 42 and the orifice one 430 is large, the area of the steam passing through the orifice one 430 is large, the flow speed is high, and the decompression speed is high; when the clearance between the shutter 42 and the orifice one 430 is small, the area of the vapor passing through the orifice one 430 is small, the flow rate is slow, and the decompression speed is slow.

When the steam flows in the valve body 1, the liquid passes through the cooling water pipe 8 and the mist nozzle 51 and is sprayed into the valve body 1 through the net disk 50 and is mixed with the steam, so that the temperature reduction effect is realized, but when the steam and the cooling water are mixed by a common temperature reduction device, the two are simply mixed together, and an effective mechanical mixing mode is lacked, so that the temperature reduction effect on the steam is not obvious.

The outer wall of the throttle screen 43 is fixedly connected with the flow blocking plate 433, the flow blocking plate 433 is obliquely arranged, so that steam can flow downwards, and is fully mixed with mist, the effect of reducing temperature is achieved, the mist nozzle 51 is a spiral nozzle, the design of the spiral nozzle allows liquid to form vortex in the nozzle, the atomization effect is improved, the size of mist drops is reduced, and the injection efficiency and quality are improved; meanwhile, the spiral nozzle can realize high-quality atomization, the diameter of the generated atomized liquid drops is smaller, the distribution is more uniform, and the spray effect is improved and the liquid waste is reduced.

And because a small speed difference is generated between the steam and the mist spraying speed when the steam speed and the mist spraying speed are similar, the diffusion is beneficial to the diffusion between the steam and the mist, and the diffusion can more effectively mix molecules or particles in the steam and the mist together due to the similar speeds under the condition of steam and mist spraying, so that the molecules or particles are more uniformly distributed in the air.

That is, as shown in fig. 7, the shielding block 42 is fixedly connected with the first telescopic block 44, when the shielding block 42 moves in a direction away from the first orifice 430, the first telescopic block 44 is pushed to move in a direction of the fixed pipe 40, so that the holes on the net disc 50 are gradually exposed, the blocking degree of the first telescopic block 44 to the mist nozzle 51 is reduced, the spraying amount and speed of the mist nozzle 51 into the valve body 1 are increased, the mixing of mist and steam is facilitated, and the temperature reduction effect of the steam system is facilitated.

It should be noted that: in order to prevent the water flow below the mist nozzle 51 from directly flowing out through the holes, but through adjustment and control, the water flow forms mist through the mist nozzle 51, so that the effect of reducing temperature and pressure is better realized, and the holes on the net disc 50 are blocked.

While embodiments of the present invention have been shown and described above for purposes of illustration and description, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (8)

1. Be used for steam system atomizing integral type to subtract temperature decompression device, including valve body (1), its characterized in that: the valve is characterized in that a valve seat (2) is arranged inside the valve body (1), a valve core (3) is fixedly connected to the upper end face of the valve seat (2), a pressure reducing mechanism (4) is arranged below the valve core (3), a temperature reducing mechanism (5) is arranged below the pressure reducing mechanism (4), a valve rod (6) is fixedly connected to the upper end face of the valve core (3), a driving mechanism (7) is arranged at one end, far away from the valve body (1), of the valve rod (6), a cooling water pipe (8) is arranged at the bottom of the valve body (1), a steam inlet pipe (9) is communicated with one end of the valve body (1), and a steam outlet pipe (10) is communicated with the other end of the valve body.

The decompression mechanism (4) comprises a fixed pipe (40), the fixed pipe (40) penetrates through the valve core (3), the outer wall of the fixed pipe (40) is connected with the inner wall of the valve core (3) in a sliding sealing mode, two connecting rods (41) are rotationally connected to the side wall of the valve core (3), a shielding block (42) is rotationally connected to one end, far away from the valve core (3), of the connecting rods (41), a throttle screen (43) is fixedly connected to the fixed pipe (40), the fixed pipe (40) is located at the center of the bottom end of the inner wall of the throttle screen (43), and a plurality of first throttle orifices (430) are formed in the side wall of the throttle screen (43).

2. The vapor system atomizing integrated temperature and pressure reducing device as set forth in claim 1, wherein: the temperature reducing mechanism (5) comprises a net disc (50), the upper end face of the net disc (50) is fixedly connected with the bottom end of the fixed pipe (40), a mist nozzle (51) is arranged below the net disc (50), and the lower part of the mist nozzle (51) is communicated with the temperature reducing water pipe (8).

3. The vapor system atomizing integrated temperature and pressure reducing device as set forth in claim 1, wherein: the throttle screen (43) inner wall bottom has seted up slot hole (431), shelter from piece (42) bottom in slot hole (431) sliding connection, just slot hole (431) inner wall one side fixedly connected with flexible piece two (432), flexible piece two (432) one end and shelter from piece (42) one side fixed connection.

4. The vapor system atomizing integrated temperature and pressure reducing device as set forth in claim 1, wherein: the side wall below the fixed pipe (40) is fixedly connected with a first telescopic block (44), and one end, far away from the fixed pipe (40), of the first telescopic block (44) is fixedly connected with a shielding block (42).

5. The vapor system atomizing integrated temperature and pressure reducing device as set forth in claim 1, wherein: an orifice II (400) is formed in the fixed pipe (40), and the diameter of the orifice II (400) is larger than that of the orifice I (430).

6. The vapor system atomizing integrated temperature and pressure reducing device as set forth in claim 1, wherein: the outer wall of the throttle screen (43) is fixedly connected with a spoiler (433), and the spoiler (433) is obliquely arranged.

7. The integrated vapor system atomization temperature and pressure reducing device of claim 2, wherein: the lower part of the shielding block (42) is an inverse C-shaped fog nozzle (51) is a spiral nozzle.

8. The integrated vapor system atomization temperature and pressure reducing device of claim 2, wherein: the diameter of the valve core (3) is smaller than that of the throttle screen (43), and the diameter of the bottom of the throttle screen (43) is equal to that of the screen disc (50).