Water spraying adjusting mechanism for temperature and pressure reducer

Abstract

The utility model discloses a water spray adjusting mechanism for a temperature and pressure reducer, which comprises a pipe body, a fixed pipe arranged inside the pipe body, a U-shaped filter screen fixedly mounted at the bottom end of the fixed pipe, a cross-shaped support fixedly mounted at the top of the filter screen, a connecting shaft rotatably mounted on the lower surface of the support, and a water wheel fixedly mounted at the top end of the connecting shaft. An arc-shaped strip is fixedly installed at the bottom end of the connecting shaft, and a brush used in cooperation with the filter screen is fixedly installed on the lower surface of the arc-shaped strip. Cooling water filtered by the filter element enters the fixed pipe and is filtered again by the filter screen, so that the cooling water impacts the water wheel, the water wheel rotates, the connecting shaft connected with the water wheel is driven to rotate, the connecting shaft rotates and drives the arc-shaped strip to rotate, and the brush rotates along with the arc-shaped strip to clean impurities filtered on the filter screen; and impurities are prevented from blocking meshes of the filter screen to influence the filtering effect.

Description

Technical Field

[0001] This utility model belongs to the technical field of desuperheating and pressure reducing devices, and in particular relates to a water spray adjustment mechanism for desuperheating and pressure reducing devices. Background Technology

[0002] Desuperheaters and pressure reducers are widely used steam heat energy conversion devices and energy-saving devices for reheating and utilization in modern combined heat and power (CHP) and heating industries. A desuperheater and pressure reducer uses water as a cooling medium to regulate the pressure and temperature of superheated or reheated steam. Its main function is to control the secondary steam pressure and temperature to meet the specified parameters for the safe operation of pipeline process equipment. The water spray regulating mechanism of the desuperheater and pressure reducer mainly consists of fixed nozzles, and the water pressure is adjusted by a valve in front of the nozzle to change the water spray volume.

[0003] In the prior art, Chinese utility model patent with patent number CN206816943U discloses a water spray adjustment mechanism for a desuperheater and pressure reducer, including a valve body, a pressure plate, a valve stem, and a sleeve. The pressure plate is installed on the upper end of the valve body by a double-ended stud, the valve stem is disposed in the valve body, and the sleeve is installed on the lower end of the valve body. A double layer of packing is provided between the upper part of the valve stem and the valve body, and the double layer of packing is pressed tightly by the pressure plate. Multiple nozzles are arranged from top to bottom on the sleeve arm. A valve plug is installed at the lower end of the valve stem. The valve stem moves up and down in the valve body, and the valve plug partially or completely blocks or releases the nozzles on the sleeve arm.

[0004] In the aforementioned prior art, although the number of actual working nozzles is changed by the action of the valve plug to adapt to changes in steam flow; each nozzle is independent of each other, and blockage of one nozzle will not affect the operation of other nozzles; double-layer packing is set at the upper end of the valve stem to reduce the possibility of external leakage of the valve; and the valve plug adopts a combination of hard and soft seals to ensure the sealing effect of the valve plug on the nozzles and effectively control the changes in the amount of water sprayed from the nozzles, the cooling process usually uses atomizing nozzles to spray water for cooling. Since the diameter of the spray holes of the nozzles is relatively small, and scale will be generated at the spray holes during the spraying and flow of water, it is easy to cause blockage of the spray holes of the nozzles, resulting in unstable high-pressure water spray volume and reduced cooling effect. Utility Model Content

[0005] To address the technical problem that the nozzles of a de-icing and pressure-reducing device have relatively small spray hole diameters and that scale builds up at the spray holes during water spraying and flow, easily causing blockage and resulting in unstable high-pressure water spray volume and reduced cooling effect, this invention provides a spray adjustment mechanism for a de-icing and pressure-reducing device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a water spray adjustment mechanism for a desuperheating and pressure reducing device, comprising a pipe body, a fixed pipe disposed inside the pipe body, a U-shaped filter screen fixedly installed at the bottom end of the fixed pipe, a cross-shaped bracket fixedly installed at the top of the filter screen, a connecting shaft rotatably installed on the lower surface of the bracket, a water wheel fixedly installed at the top end of the connecting shaft, and an arc-shaped strip fixedly installed at the bottom end of the connecting shaft, with a brush fixedly installed on the lower surface of the arc-shaped strip for use with the filter screen.

[0007] Optionally, the top of the pipe body is connected to a sleeve, a first flange is fixedly installed at the top of the sleeve, a second flange is assembled on the upper surface of the first flange, and the fixed pipe is fixedly installed on the lower surface of the second flange.

[0008] Optionally, the upper surface of the second flange is connected to a connecting pipe, the top end of the connecting pipe is connected to a fixing ring, the inner surface of the fixing ring is provided with a threaded groove, and a filter element is installed in the internal thread of the threaded groove.

[0009] Optionally, the top of the filter element is provided with a protruding thread, and an opening is provided on one side of the filter element, and a knob is fixedly installed on the top of the filter element.

[0010] Optionally, one side of the connecting pipe is connected to a water inlet pipe, and a rotating shaft is rotatably installed inside the water inlet pipe. Symmetrical valve discs are fixedly installed on both sides of the rotating shaft.

[0011] Optionally, an adjustment box is fixedly installed on the upper surface of the water inlet pipe, a worm gear is rotatably installed inside the adjustment box, and an adjustment knob for driving the worm gear is fixedly installed on one side of the adjustment box. A worm wheel fixedly installed at the top of the rotating shaft is meshed with one side of the worm gear.

[0012] In summary, compared with the prior art, the water spray adjustment mechanism for a desuperheater and pressure reducer provided by this utility model has the following beneficial effects:

[0013] 1. In this utility model, the cooling water filtered by the filter element enters the fixed pipe and is filtered again by the filter screen, which causes the cooling water to impact the water wheel, thereby causing the water wheel to rotate, which in turn drives the connecting shaft connected to it to rotate. At the same time, the connecting shaft rotates and drives the arc strip to rotate, so that the brush rotates with the arc strip to sweep away the impurities filtered on the filter screen, preventing the impurities from clogging the mesh of the filter screen and affecting the filtration effect.

[0014] 2. In this utility model, pre-filtration is performed by a filter element to improve the filtration effect. At the same time, the threaded installation makes it easy to remove the filter element after the work is completed for maintenance or repair, which facilitates the disassembly and assembly of the filter element and improves work efficiency.

[0015] 3. In this utility model, rotating the adjustment knob causes the connected worm gear to rotate, which in turn drives the worm wheel to rotate, which in turn drives the shaft to rotate. When the shaft rotates, the valve disc rotates, creating a gap between the valve disc and the inlet pipe, allowing cooling water to pass through. The valve disc opens through the transmission between the worm gear and the worm wheel. Because the worm gear has a self-locking function, the flow rate of the cooling water can be precisely controlled, improving the performance. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the regulating box structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the filter element structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the tube body of this utility model;

[0020] Figure 5 This is a schematic diagram of the filter structure of this utility model;

[0021] Figure 6 This utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0022] In the diagram: 1. Pipe body; 2. Sleeve; 3. First flange; 4. Second flange; 5. Fixed pipe; 6. Filter screen; 7. Support; 8. Water wheel; 9. Connecting shaft; 10. Arc strip; 11. Brush; 12. Connecting pipe; 13. Fixing ring; 14. Threaded groove; 15. Knob; 16. Raised thread; 17. Filter element; 18. Opening; 19. Inlet pipe; 20. Regulating box; 21. Regulating knob; 22. Worm gear; 23. Worm wheel; 24. Rotating shaft; 25. Valve disc. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] refer to Figure 1 and Figure 2 A water spray adjustment mechanism for a desuperheater and pressure reducer includes a water inlet pipe 19, an adjustment box 20 fixedly installed on the upper surface of the water inlet pipe 19, a worm gear 22 rotatably installed inside the adjustment box 20, and an adjustment knob 21 for driving the worm gear 22 fixedly installed on one side of the adjustment box 20.

[0025] refer to Figure 1 and Figure 2Inside the water inlet pipe 19, a rotating shaft 24 is rotatably installed perpendicular to the worm gear 22. The top end of the rotating shaft 24 passes through the upper surface of the water inlet pipe 19 and the lower surface of the regulating box 20, and rotates in cooperation with it. A worm wheel 23 that meshes with the worm gear 22 is fixedly installed at the top end of the rotating shaft 24. Symmetrical valve discs 25 are fixedly installed on both sides of the rotating shaft 24.

[0026] Furthermore, in use, rotating the adjusting knob 21 causes the connected worm gear 22 to rotate, which in turn drives the worm wheel 23 to rotate, thereby causing the rotating shaft 24 to rotate. When the rotating shaft 24 rotates, the valve disc 25 rotates, creating a gap between the valve disc 25 and the water inlet pipe 19, allowing cooling water to pass through. The valve disc 25 is opened through the transmission between the worm gear 22 and the worm wheel 23. Because the worm gear 22 has a self-locking function, the flow rate of the cooling water can be precisely controlled, improving the performance.

[0027] refer to Figure 1 and Figure 3 One end of the water inlet pipe 19 is connected to a connecting pipe 12, and the connection between the connecting pipe 12 and the water inlet pipe 19 is sealed. The top end of the connecting pipe 12 is connected to a fixing ring 13. The inner surface of the fixing ring 13 is provided with a threaded groove 14. The internal thread of the threaded groove 14 is used to install a filter element 17. The top of the filter element 17 is provided with a protruding thread 16. The filter element 17 is installed inside the fixing ring 13 through the protruding thread 16. An opening 18 is provided on one side of the filter element 17, and a knob 15 is fixedly installed on the top end of the filter element 17 for screwing the filter element 17 into the connecting pipe 12. When the filter element 17 is installed in the connecting pipe 12, the opening 18 is connected to the water inlet pipe 19. When the cooling water enters the connecting pipe 12, it is first filtered by the filter element 17 and then continues to be transported for pre-filtration to improve the filtration effect.

[0028] Furthermore, during use, since the filter element 17 is installed via threads, it is easy to remove the filter element 17 after the work is completed for maintenance or repair, which facilitates the disassembly and assembly of the filter element 17 and improves work efficiency.

[0029] refer to Figure 1 and Figure 3 The top of the pipe body 1 is connected to the sleeve 2. The top of the sleeve 2 is fixedly installed with the first flange 3. The upper surface of the first flange 3 is fitted with the second flange 4. The lower surface of the second flange 4 is fixedly installed with the fixing pipe 5. The fixing pipe 5 is inserted into the inside of the sleeve 2 and is fixed to the first flange 3 through the second flange 4 and is designed for sealing. The connecting pipe 12 is connected to the upper surface of the second flange 4.

[0030] refer to Figures 4-6A U-shaped filter screen 6 is fixedly installed at the bottom of the fixed pipe 5, a cross-shaped bracket 7 is fixedly installed at the top of the filter screen 6, a connecting shaft 9 is rotatably installed on the lower surface of the bracket 7, a water wheel 8 is fixedly installed at the top of the connecting shaft 9, the water wheel 8 is existing technology and will not be disclosed in detail here, and an arc-shaped strip 10 that works with the filter screen 6 is fixedly installed at the bottom of the connecting shaft 9, and a brush 11 is fixedly installed on the lower surface of the arc-shaped strip 10.

[0031] Furthermore, during use, the cooling water filtered by the filter element 17 enters the fixed pipe 5 and is filtered again by the filter screen 6, causing the cooling water to impact the water wheel 8, thereby causing the water wheel 8 to rotate, which in turn drives the connected shaft 9 to rotate. At the same time, the connecting shaft 9 drives the arc strip 10 to rotate, causing the brush 11 to rotate with the arc strip 10, cleaning the impurities filtered on the filter screen 6, preventing impurities from clogging the mesh of the filter screen 6 and affecting the filtration effect. The filtered water is then delivered to the atomizing nozzle through the pipe body 1. After the operation is completed, the filter screen 6 can be removed to remove impurities.

[0032] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0033] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0034] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A water spray regulating mechanism for a desuperheater and pressure reducer, characterized in that, The device includes a pipe body (1), inside which a fixed pipe (5) is provided. A U-shaped filter screen (6) is fixedly installed at the bottom end of the fixed pipe (5). A cross-shaped bracket (7) is fixedly installed at the top of the filter screen (6). A connecting shaft (9) is rotatably installed on the lower surface of the bracket (7). A water wheel (8) is fixedly installed at the top end of the connecting shaft (9). An arc-shaped strip (10) is fixedly installed at the bottom end of the connecting shaft (9). A brush (11) that works in conjunction with the filter screen (6) is fixedly installed on the lower surface of the arc-shaped strip (10).

2. The water spray adjustment mechanism for a desuperheater and pressure reducer according to claim 1, characterized in that, The top of the pipe body (1) is connected to a sleeve (2), and a first flange (3) is fixedly installed at the top of the sleeve (2). A second flange (4) is assembled on the upper surface of the first flange (3), and the fixed pipe (5) is fixedly installed on the lower surface of the second flange (4).

3. The water spray adjustment mechanism for a desuperheater and pressure reducer according to claim 2, characterized in that, The upper surface of the second flange (4) is connected to a connecting pipe (12), the top end of the connecting pipe (12) is connected to a fixing ring (13), the inner surface of the fixing ring (13) is provided with a threaded groove (14), and a filter element (17) is installed in the internal thread of the threaded groove (14).

4. The water spray adjustment mechanism for a desuperheater and pressure reducer according to claim 3, characterized in that, The filter element (17) has a protruding thread (16) on its top and an opening (18) on one side. A knob (15) is fixedly installed on the top of the filter element (17).

5. A water spray adjustment mechanism for a desuperheater and pressure reducer according to claim 3, characterized in that, One side of the connecting pipe (12) is connected to a water inlet pipe (19), and a rotating shaft (24) is rotatably installed inside the water inlet pipe (19). Symmetrical valve discs (25) are fixedly installed on both sides of the rotating shaft (24).

6. The water spray adjustment mechanism for a desuperheater and pressure reducer according to claim 5, characterized in that, An adjustment box (20) is fixedly installed on the upper surface of the water inlet pipe (19). A worm gear (22) is rotatably installed inside the adjustment box (20). An adjustment knob (21) for driving the worm gear (22) is fixedly installed on one side of the adjustment box (20). A worm wheel (23) fixedly installed on the top of the rotating shaft (24) is meshed with one side of the worm gear (22).

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