A high temperature and high pressure steam regulating valve

Abstract

The utility model relates to the technical field of regulating valves, and specifically to a high-temperature and high-pressure steam regulating valve, comprising a valve body, a valve cover and a valve stem, the valve cover is installed on the top of the valve body, the valve stem is installed inside the valve cover, the left and right ends of the valve body are respectively provided with an inlet flow channel and an outlet flow channel, the inlet flow channel and the outlet flow channel are provided with a valve cavity, a slow-flow valve plug is installed on the inner side of the valve cavity, a plurality of slow-flow inlets are provided on the outer side of the slow-flow valve plug, a silencer pipe is threadedly connected to the bottom end of the slow-flow valve plug, a silencer cylinder is fixedly connected to the outer side of the silencer pipe, a plurality of baffles are fixedly connected between the silencer cylinder and the silencer pipe, the left and right ends of the valve body are fixedly connected with connecting flanges, the top of the valve body is fixedly connected to the valve cover by a plurality of bolts, and compared with the existing high-temperature and high-pressure steam regulating valve, the utility model greatly reduces the noise generated during flow regulation through design.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to a high-temperature and high-pressure steam regulating valve. Background Art

[0002] The temperature reduction and pressure reduction device is a steam thermal energy parameter (pressure, temperature) conversion device and an energy-saving device that utilizes waste heat, which is widely used in thermal energy engineering in modern industry such as cogeneration, centralized heating (or steam supply) and light industry, electric power, chemical industry, textile and other enterprises. Through this device, the steam parameters provided by the user are reduced to the appropriate temperature and pressure required by the user to meet the user's requirements. As a key equipment in the temperature reduction and pressure reduction system, the steam regulating valve can play a key role in regulating flow and reducing pressure.

[0003] During the use of steam regulating valves, blocks are usually used to adjust the flow of pipeline media. Due to the large temperature and pressure differences between the inlet and outlet pipelines and long-term blockage, when the steam regulating valve is opened, high-temperature and high-pressure steam flows directly from the inlet channel to the outlet channel, which will generate a lot of noise.

[0004] Therefore, it is particularly important to design a high-temperature and high-pressure steam regulating valve to solve the above-mentioned defects. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model designs a high-temperature and high-pressure steam regulating valve, which aims to solve the technical problem that the steam regulating valve in the prior art will generate a lot of noise during use.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A high-temperature and high-pressure steam regulating valve comprises a valve body, a valve cover and a valve stem, the valve cover is installed on the top of the valve body, the valve stem is installed inside the valve cover, the left and right ends of the valve body are respectively provided with an inlet flow channel and an outlet flow channel, the inlet flow channel and the outlet flow channel are provided with a valve cavity, a slow-flow valve plug is installed on the inner side of the valve cavity, a plurality of slow-flow inlets are provided on the outer side of the slow-flow valve plug, a silencer pipe is threadedly connected to the bottom end of the slow-flow valve plug, a silencer cylinder is fixedly connected to the outer side of the silencer pipe, and a plurality of baffles are fixedly connected between the silencer cylinder and the silencer pipe.

[0008] As a preferred solution of the utility model, both left and right ends of the valve body are fixedly connected with connecting flanges, the top of the valve body is fixedly connected to the valve cover by multiple sets of bolts, and a sealing ring is provided at the connection between the valve body and the valve cover.

[0009] As a preferred solution of the utility model, a stabilizing frame is installed above the valve cover and on the outside of the valve stem, the stabilizing frame is fixedly connected to the valve cover through multiple sets of screws, the interior of the stabilizing frame is threadedly connected to the valve stem through a threaded sleeve, a first sealing sleeve is fixedly connected to the top of the valve cover and on the outside of the valve stem, and the valve stem is slidably connected to the valve cover and the first sealing sleeve.

[0010] As a preferred solution of the utility model, a second sealing sleeve is fixedly connected to the inside of the valve cavity and on the outside of the slow-flow valve plug, the top of the slow-flow valve plug is fixedly connected to a pressing end adapted for use with the second sealing sleeve, and the top of the slow-flow valve plug is fixedly connected to the valve stem through a connecting head.

[0011] As a preferred solution of the utility model, multiple groups of the slow flow inlets are located on the outside of the slow flow valve plug and are evenly spaced, and multiple groups of the slow flow inlets are located at the center of the slow flow valve plug and are connected.

[0012] As a preferred solution of the utility model, a flow guide cover is fixedly connected to the top of the silencer pipe and located inside the slow-flow valve plug, and multiple groups of flow guide holes are provided on the outer sides of the silencer pipe and the silencer cylinder.

[0013] As a preferred solution of the utility model, the multiple groups of baffles are located inside the silencer at equal intervals, and the multiple groups of baffles are all designed in a corrugated structure.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] In the utility model, through the coordinated design of the slow-flow valve plug, the slow-flow inlet, the silencer pipe and the silencer cylinder, when the valve body is used for adjustment, the high-temperature and high-pressure steam as a whole is diverted through the multiple groups of slow-flow inlets on the outside of the slow-flow valve plug to enter the interior of the slow-flow valve plug, thereby reducing the flow rate of the steam. In this process, the high-temperature and high-pressure steam as a whole can further reduce the flow rate of the steam when passing through the corrugated slow-flow inlet, thereby reducing the generation of noise. After the high-temperature and high-pressure steam enters the interior of the slow-flow valve plug, it is introduced into the silencer pipe through the guide cover, and is diverted by the guide holes on the silencer pipe, and finally discharged through the guide holes on the silencer cylinder, further playing the role of speed reduction and silencing. When the high-temperature and high-pressure steam is discharged from the guide holes on the silencer pipe, the high-temperature and high-pressure steam circulates on the corrugated baffle, which greatly reduces the overall discharge speed, thereby further reducing the generated noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the external structure of the slow-flow valve plug of the utility model;

[0018] Figure 3The figure is a schematic diagram of the internal structure of the silencer of the utility model.

[0019] In the figure: 1. valve body; 101. connecting flange; 102. sealing ring; 2. valve cover; 201. stabilizing frame; 202. screw; 203. threaded sleeve; 204. first sealing sleeve; 3. valve stem; 4. inlet flow channel; 5. outlet flow channel; 6. valve chamber; 601. second sealing sleeve; 7. slow-flow valve plug; 701. pressing end; 702. connector; 8. slow-flow inlet; 9. silencer; 901. guide cover; 902. guide hole; 10. silencer; 11. baffle. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] Example:

[0022] See also Figure 1-Figure 3 , the utility model provides a technical solution:

[0023] A high-temperature and high-pressure steam regulating valve comprises a valve body 1, a valve cover 2 and a valve stem 3. The valve cover 2 is installed on the top of the valve body 1, and the valve stem 3 is installed inside the valve cover 2. An inlet flow channel 4 and an outlet flow channel 5 are respectively provided at the left and right ends inside the valve body 1. The inlet flow channel 4 and the outlet flow channel 5 are provided with a valve cavity 6. A slow-flow valve plug 7 is installed on the inner side of the valve cavity 6. A plurality of slow-flow inlets 8 are provided on the outer side of the slow-flow valve plug 7. A silencer pipe 9 is threadedly connected to the bottom end of the slow-flow valve plug 7. A silencer cylinder 10 is fixedly connected to the outer side of the silencer pipe 9. A plurality of baffles 11 are fixedly connected between the silencer cylinder 10 and the silencer pipe 9.

[0024] First, the left and right ends of the valve body 1 are fixedly connected with connecting flanges 101, the top of the valve body 1 is fixedly connected to the valve cover 2 by multiple sets of bolts, and a sealing ring 102 is provided at the connection between the valve body 1 and the valve cover 2. The valve body 1 is installed and fixed by the connecting flange 101, and the valve cover 2 is fixedly installed on the top of the valve body 1 by multiple sets of bolts. The sealing ring 102 at the connection between the valve body 1 and the valve cover 2 can ensure the sealing of the valve body 1.

[0025] Furthermore, a stabilizing frame 201 is installed above the valve cover 2 and on the outside of the valve stem 3. The stabilizing frame 201 is fixedly connected to the valve cover 2 through multiple sets of screws 202. The inside of the stabilizing frame 201 is threadedly connected to the valve stem 3 through a threaded sleeve 203. A first sealing sleeve 204 is fixedly connected to the top of the valve cover 2 and on the outside of the valve stem 3. The valve stem 3 is slidably connected to the valve cover 2 and the first sealing sleeve 204. When the valve body 1 is used for adjustment, the valve stem 3 is rotated by the handwheel at the top of the valve stem 3, and the valve stem 3 is stably moved up and down under the connection of the threaded sleeve 203 inside the stabilizing frame 201. At the same time, when the valve stem 3 is manipulated, the valve stem 3 slides on the inside of the first sealing sleeve 204.

[0026] Then, a second sealing sleeve 601 is fixedly connected inside the valve cavity 6 and on the outside of the slow-flow valve plug 7. A pressing end 701 adapted for use with the second sealing sleeve 601 is fixedly connected to the top of the slow-flow valve plug 7. The top of the slow-flow valve plug 7 is fixedly connected to the valve stem 3 via a connector 702. When the regulating valve is closed, the slow-flow valve plug 7 is located inside the valve cavity 6. The pressing end 701 is pressed down under the connection of the connector 702, so that it fits tightly with the top of the second sealing sleeve 601, thereby ensuring the sealing of the valve cavity 6.

[0027] Furthermore, multiple groups of slow flow inlets 8 are evenly spaced outside the slow flow valve plug 7, and multiple groups of slow flow inlets 8 are connected at the center of the slow flow valve plug 7. When the flow rate is adjusted, the slow flow valve plug 7 is slowly moved up, so that the high temperature and high pressure as a whole are diverted through the multiple groups of slow flow inlets 8 outside the slow flow valve plug 7 into the inside of the slow flow valve plug 7, thereby reducing the flow rate of steam. In this process, the high temperature and high pressure as a whole can further reduce the flow rate of steam when passing through the corrugated slow flow inlet 8, thereby reducing the generation of noise.

[0028] Secondly, a flow guide cover 901 is fixedly connected to the top of the silencer pipe 9 and located inside the slow-flow valve plug 7. Multiple groups of flow guide holes 902 are provided on the outside of the silencer pipe 9 and the silencer cylinder 10. After the high-temperature and high-pressure steam enters the interior of the slow-flow valve plug 7, it is introduced into the silencer pipe 9 through the flow guide cover 901, and is diverted by the flow guide holes 902 on the silencer pipe 9, and finally discharged through the flow guide holes 902 on the silencer cylinder 10, thereby further playing the role of speed reduction and silencing.

[0029] Finally, multiple groups of baffles 11 are evenly spaced inside the silencer 10, and all of the multiple groups of baffles 11 are designed in a corrugated structure. When high-temperature and high-pressure steam is discharged from the guide holes 902 on the silencer 9, the high-temperature and high-pressure steam flows on the corrugated baffles 11, which greatly reduces the overall discharge speed, thereby further reducing the generated noise.

[0030] In this embodiment, the implementation scenario is specifically as follows: when the valve body 1 is used for adjustment, the valve stem 3 is rotated by the hand wheel at the top of the valve stem 3, and the slow-flow valve plug 7 is slowly moved up under the connection of the connecting head 702, and the high-temperature and high-pressure steam enters through the inlet flow channel 4, and then the high-temperature and high-pressure as a whole is diverted through the multiple groups of slow-flow inlets 8 on the outside of the slow-flow valve plug 7 to enter the interior of the slow-flow valve plug 7, thereby reducing the flow rate of the steam. In this process, the high-temperature and high-pressure as a whole can further reduce the flow rate of the steam when passing through the corrugated slow-flow inlet 8, thereby reducing the generation of noise. After the high-temperature and high-pressure steam enters the interior of the slow-flow valve plug 7, it is guided by the guide cover 901. It enters the silencer pipe 9, is diverted by the guide holes 902 on the silencer pipe 9, and is finally discharged through the guide holes 902 on the silencer tube 10, which further plays the role of speed reduction and silencing. When the high-temperature and high-pressure steam is discharged from the guide holes 902 on the silencer pipe 9, the high-temperature and high-pressure steam flows on the corrugated baffle 11, which greatly reduces the overall discharge speed, thereby further reducing the generated noise. Subsequently, the high-temperature and high-pressure gas is discharged through the outlet flow channel 5. The entire operation process is simple and convenient. Compared with the existing high-temperature and high-pressure steam regulating valve, the utility model greatly reduces the noise generated during flow regulation through design.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-temperature and high-pressure steam regulating valve, comprising a valve body (1), a valve cover (2) and a valve stem (3), wherein the valve cover (2) is mounted on the top of the valve body (1), and the valve stem (3) is mounted inside the valve cover (2), and an inlet flow channel (4) and an outlet flow channel (5) are respectively provided at the left and right ends inside the valve body (1), and the inlet flow channel (4) and the outlet flow channel (5) are provided with a valve cavity (6), characterized in that: A slow-flow valve plug (7) is installed on the inner side of the valve cavity (6), and a plurality of slow-flow inlets (8) are provided on the outer side of the slow-flow valve plug (7). A silencer pipe (9) is threadedly connected to the bottom end of the slow-flow valve plug (7), and a silencer cylinder (10) is fixedly connected to the outer side of the silencer pipe (9). A plurality of baffles (11) are fixedly connected between the silencer cylinder (10) and the silencer pipe (9).

2. A high-temperature and high-pressure steam regulating valve according to claim 1, characterized in that: The left and right ends of the valve body (1) are fixedly connected with connecting flanges (101), the top of the valve body (1) is fixedly connected to the valve cover (2) via a plurality of sets of bolts, and a sealing ring (102) is provided at the connection between the valve body (1) and the valve cover (2).

3. A high-temperature and high-pressure steam regulating valve according to claim 1, characterized in that: A stabilizing frame (201) is installed above the valve cover (2) and located on the outside of the valve stem (3); the stabilizing frame (201) is fixedly connected to the valve cover (2) via a plurality of sets of screws (202); the interior of the stabilizing frame (201) is threadedly connected to the valve stem (3) via a threaded sleeve (203); a first sealing sleeve (204) is fixedly connected to the top of the valve cover (2) and located on the outside of the valve stem (3); the valve stem (3) is slidably connected to the valve cover (2) and the first sealing sleeve (204).

4. A high-temperature and high-pressure steam regulating valve according to claim 1, characterized in that: A second sealing sleeve (601) is fixedly connected inside the valve cavity (6) and located on the outside of the slow-flow valve plug (7); a pressing end (701) adapted for use with the second sealing sleeve (601) is fixedly connected to the top of the slow-flow valve plug (7); and the top of the slow-flow valve plug (7) is fixedly connected to the valve stem (3) via a connector (702).

5. A high-temperature and high-pressure steam regulating valve according to claim 1, characterized in that: The plurality of groups of slow flow inlets (8) are located outside the slow flow valve plug (7) and are distributed at equal intervals. The plurality of groups of slow flow inlets (8) are located at the center of the slow flow valve plug (7) and are connected.

6. A high-temperature and high-pressure steam regulating valve according to claim 1, characterized in that: A flow guide cover (901) is fixedly connected to the top end of the silencer pipe (9) and located inside the slow-flow valve plug (7), and multiple groups of flow guide holes (902) are provided on the outsides of the silencer pipe (9) and the silencer cylinder (10).

7. A high-temperature and high-pressure steam regulating valve according to claim 1, characterized in that: The multiple groups of baffles (11) are located inside the silencer (10) and are distributed at equal intervals. The multiple groups of baffles (11) are all designed in a corrugated structure.

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