Spray header for testing loop voltage stabilizer

Abstract

The invention relates to the technical field of spraying, and provides a spray header for a test loop voltage stabilizer, comprising: a nozzle, one end of which is provided with a fluid inlet and the other end of which is provided with a spray outlet; the outer wall of the first rotary core is matched with the interior of the pipe nozzle, and a plurality of first spiral channels are formed in the outer wall of the first rotary core in the circumferential direction; the outer wall of the second rotary core is matched with the inner wall of the first rotary core, and a plurality of second spiral channels are formed in the outer wall of the second rotary core in the circumferential direction; a center channel is formed in the center of the second rotary core. When fluid passes through the first spiral channel and the second spiral channel, the fluid continuously spirally rotates, the speed is continuously increased, the momentum of the fluid is larger, and the atomization capacity is higher under the same flow condition; the momentum of the fluid in the two channels is far larger than that of the fluid in the central channel, and the three channels of fluid are mutually extruded and collided for momentum exchange after being converged, so that the atomization uniformity of the spray header can be improved, and meanwhile, the atomization capability is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of spraying, and in particular to a spray head for a test loop voltage stabilizer. Background Art

[0002] In the high temperature and high pressure test circuit, the pressurizer is an important device of the high temperature and high pressure test circuit. It maintains the circuit pressure at a constant pressure in steady-state operation, and has the functions of controlling the circuit pressure fluctuation, monitoring whether the circuit coolant leaks, high pressure shutdown protection and low pressure shutdown protection, etc., and when the circuit system changes transiently, the pressure change is limited within the allowable value, which can prevent the system from overpressure and maintain the integrity of the circuit. The pressurizer is equipped with a spray system, which is used to reduce the pressure when the pressurizer pressure increases, and the spray head is related to the spray effect of the spray system. Some existing spray heads have poor atomization capacity and uniformity, which is difficult to meet the spray requirements of the high temperature and high pressure test circuit. Summary of the invention

[0003] The object of the present invention is to provide a spray head for a test loop voltage stabilizer to improve atomization capability and uniformity.

[0004] The present invention is achieved through the following technical solutions:

[0005] A sprinkler head for testing a loop voltage stabilizer, comprising:

[0006] A nozzle having a fluid inlet at one end and a spray outlet at the other end;

[0007] A first spiral core, whose outer wall cooperates with the interior of the nozzle and whose outer wall is provided with a plurality of first spiral channels along the circumferential direction; and

[0008] The outer wall of the second rotating core matches with the inner wall of the first rotating core, and a plurality of second spiral channels are arranged on the outer wall along the circumferential direction; a central channel is arranged at the center of the second rotating core.

[0009] Optionally, the central channel includes a first straight section and a first diameter-expanding section in sequence along the fluid flow direction, and the diameter of the first diameter-expanding section gradually increases along the fluid flow direction.

[0010] Optionally, the inner wall of the first swirl core includes a second straight section and a first reduced diameter section in sequence along the fluid flow direction, the second swirl core cooperates with the second straight section, and the diameter of the first reduced diameter section gradually decreases along the fluid flow direction.

[0011] Optionally, the maximum diameter of the first diameter-expanding section is greater than the minimum diameter of the first diameter-reducing section.

[0012] Optionally, the inner wall of the first swirl core is provided with a second diameter expansion section at the end where the fluid flows out, and the diameter of the second diameter expansion section gradually increases along the direction of fluid flow; the outer wall of the first swirl core is provided with a second diameter reduction section at the end where the fluid flows out, and the diameter of the second diameter reduction section gradually decreases along the direction of fluid flow.

[0013] Optionally, the inner wall of the nozzle includes a third straight section and a third reduced diameter section in sequence along the fluid flow direction, the first rotating core cooperates with the third straight section, and the diameter of the third reduced diameter section gradually decreases along the fluid flow direction.

[0014] Optionally, the diameter of the spray outlet of the nozzle gradually increases along the fluid flow direction.

[0015] Optionally, the first rotating core is provided with a first positioning ring at the end where the liquid flows in, and the inner wall of the nozzle is provided with a first positioning step that cooperates with the first positioning ring; the second rotating core is provided with a second positioning ring at the end where the liquid flows in, and the inner wall of the first rotating core is provided with a second positioning step that cooperates with the second positioning ring.

[0016] Optionally, the fluid inlet end of the nozzle is connected to a connecting tube, and the connecting tube is connected to a spray connecting tube.

[0017] Optionally, the inner wall of the connecting tube is connected to the outer wall of the nozzle by threads; a limiting step is provided on the inner wall of the connecting tube, a sealing ring groove is provided at the limiting step, a sealing gasket is provided in the sealing ring groove, and the sealing gasket is pressed tightly between the end face of the nozzle and the limiting step.

[0018] The technical solution of the present invention has at least the following advantages and beneficial effects: in the present invention, when the fluid passes through the first spiral channel and the second spiral channel, it continuously rotates in a spiral manner, the speed continuously increases, the fluid momentum is greater, and under the same flow conditions, the atomization ability is stronger; and the fluid momentum in these two channels is much greater than the fluid momentum in the central channel. After the three fluids converge, they squeeze and collide with each other to exchange momentum, which can improve the atomization uniformity of the sprinkler head and further improve the atomization ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A cross-sectional view of a sprinkler head for a test loop voltage stabilizer provided by the present invention;

[0021] Figure 2is a cross-sectional view of the nozzle;

[0022] Figure 3 is a cross-sectional view of the first rotating core;

[0023] Figure 4 for Figure 3 A-direction view;

[0024] Figure 5 is a cross-sectional view of the second rotating core;

[0025] Figure 6 for Figure 5 B-direction view;

[0026] Figure 7 is a schematic structural diagram of the second rotating core;

[0027] Figure 8 is a cross-sectional view of the connecting tube;

[0028] Icons: 1-first rotary core, 101-first spiral channel, 102-second straight section, 103-first reduced diameter section, 104-second expanded diameter section, 105-second reduced diameter section, 106-first positioning ring platform, 107-second positioning step, 2-second rotary core, 201-second spiral channel, 202-center channel, 2021-first straight section, 2022-first expanded diameter section, 203-second positioning ring platform, 3-nozzle, 301-spray outlet, 302-third straight section, 303-third reduced diameter section, 304-first positioning step, 4-connecting tube, 401-sealing ring groove, 5-spray connecting pipe, 6-sealing gasket. DETAILED DESCRIPTION

[0029] refer to Figure 1 A spray head for a test loop voltage regulator includes a nozzle 3, a first rotary core 1, and a second rotary core 2. For convenient connection, as an option, the present embodiment further includes a connecting tube 4 and a spray connecting pipe 5, and the spray connecting pipe 5 is convenient for connecting other equipment (or pipe fittings) of the spray system.

[0030] refer to Figure 2-Figure 7 A fluid inlet is provided at one end of the nozzle 3, and a spray outlet 301 is provided at the other end. The outer wall of the first swirl core 1 cooperates with the interior of the nozzle 3, and a plurality of first spiral channels 101 are provided on the outer wall of the first swirl core 1 along the circumferential direction; the outer wall of the second swirl core 2 cooperates with the inner wall of the first swirl core 1, and a plurality of second spiral channels 201 are provided on the outer wall of the second swirl core 2 along the circumferential direction; a central channel 202 is provided at the center of the second swirl core 2.

[0031] It is worth noting that when the fluid passes through the first spiral channel 101 and the second spiral channel 201, it continuously rotates in a spiral and the speed continuously increases, the fluid momentum is greater, and the atomization ability is stronger under the same flow conditions; and the fluid momentum in these two channels is much greater than the fluid momentum in the central channel 202. After the three fluids converge, they squeeze and collide with each other to exchange momentum, which can improve the atomization uniformity of the sprinkler head and further improve the atomization ability.

[0032] It should be understood that the first spiral channel 101 and the second spiral channel 201, that is, the channel is spiral, wherein the number of heads, the direction of rotation and the lead angle of the spiral are not specifically limited. As an option, the spirals of the first spiral channel 101 and the second spiral channel 201 of the present embodiment are both right-handed, and the spiral lead angle is 45°. In particular, the spiral of the first spiral channel 101 of the present embodiment is designed to be 6 heads, and the spiral of the second spiral channel 201 is designed to be 4 heads. Such a design makes the fluid rotate more times in the first spiral channel 101, faster, and with greater momentum, so that the momentum of the three-way fluid of the first spiral channel 101, the second spiral channel 201 and the central channel 202 is different. After the three-way fluid converges, the extrusion collision effect is better, so that the atomization ability is stronger and the uniformity is better. In addition, the number of the first spiral channel 101 and the second spiral channel 201 is not limited either. As an option, the first spiral channel 101 of the present embodiment is set to 6, and the second spiral channel 201 is set to 4.

[0033] In this embodiment, the first rotary core 1 is provided with a first positioning ring 106 at one end where the liquid flows in, and the inner wall of the nozzle 3 is provided with a first positioning step 304 that cooperates with the first positioning ring 106; the second rotary core 2 is provided with a second positioning ring 203 at one end where the liquid flows in, and the inner wall of the first rotary core 1 is provided with a second positioning step 107 that cooperates with the second positioning ring 203. It is worth noting that the first positioning ring 106 cooperates with the first positioning step 304, and the second positioning ring 203 cooperates with the second positioning step 107, so as to facilitate the axial positioning of the nozzle 3, the first rotary core 1 and the second rotary core 2. The nozzle 3 and the first rotary core 1, and the second rotary core 2 and the first rotary core 1 can be fixed by welding, and of course other embodiments can also be fixed by other methods, such as bonding.

[0034] The central channel 202 is along the fluid flow direction (i.e. Figure 1 The first spiral channel 201 has a diameter that is gradually increased along the fluid flow direction, so that the fluid coming out of the central channel 202 and the fluid coming out of the second spiral channel 201 have a larger contact area, so that the extrusion and collision effect of the two fluids after merging is better, thereby improving the atomization ability and atomization uniformity.

[0035] The inner wall of the first swirl core 1 includes a second straight section 102 and a first diameter-reducing section 103 in sequence along the fluid flow direction. The second swirl core 2 cooperates with the second straight section 102. The diameter of the first diameter-reducing section 103 gradually decreases along the fluid flow direction. It is worth noting that the first diameter-reducing section 103 provides a fully mixed space for the fluid coming out of the central channel 202 and the fluid coming out of the second spiral channel 201, so that the two fluids are mixed more fully. Furthermore, the maximum diameter of the first diameter-expanding section 2022 is greater than the minimum diameter of the first diameter-reducing section 103, so that the fluid coming out of the central channel 202 can be sprayed toward the first diameter-reducing section 103, avoiding the fluid coming out of the central channel 202 from flowing away directly.

[0036] The inner wall of the first swirl core 1 is provided with a second diameter expansion section 104 at the end where the fluid flows out, and the diameter of the second diameter expansion section 104 gradually increases along the flow direction of the fluid; the outer wall of the first swirl core 1 is provided with a second diameter reduction section 105 at the end where the fluid flows out, and the diameter of the second diameter reduction section 105 gradually decreases along the flow direction of the fluid. It is worth noting that the second diameter expansion section 104 guides the internal fluid passing through the first swirl core 1 outward, and at the same time, the second diameter reduction section 105 guides the fluid passing through the outside of the first swirl core 1 inward, so as to facilitate the full extrusion and collision of the two fluids, thereby improving the atomization ability and atomization uniformity.

[0037] The inner wall of the nozzle 3 includes a third straight section 302 and a third reduced diameter section 303 in sequence along the fluid flow direction. The first rotary core 1 cooperates with the third straight section 302, and the diameter of the third reduced diameter section 303 gradually decreases along the fluid flow direction. It is easy to understand that, similar to the first reduced diameter section 103, the third reduced diameter section 303 provides a fully mixed space for the three-way fluid (i.e., the first spiral channel 101, the second spiral channel 201 and the central channel 202), that is, the three-way fluid is mixed more fully.

[0038] The diameter of the spray outlet 301 of the nozzle 3 gradually increases along the flow direction of the fluid, that is, the spray outlet 301 is trumpet-shaped, so as to obtain a larger spray range.

[0039] In addition, it should be noted that, in this embodiment, each diameter-reducing section (i.e., the first diameter-reducing section 103, the second diameter-reducing section 105 and the third diameter-reducing section 303), each diameter-expanding section (i.e., the first diameter-expanding section 2022 and the second diameter-expanding section 104) and the spray outlet 301 can be a conical structure, a spherical structure or an ellipsoidal structure.

[0040] As an option, the connection relationship between the nozzle 3, the connecting tube 4 and the spray connecting pipe 5 in this embodiment is as follows, Figure 1 and Figure 8The spray connection pipe 5 is fixedly connected to the connection tube 4 (for example, by welding), and the inner wall of the connection tube 4 is connected to the outer wall of the nozzle 3 by threads, that is, the nozzle 3 and the connection tube 4 can be detachable. On this basis, further, a limiting step is provided on the inner wall of the connection tube 4, and a sealing ring groove 401 is provided at the limiting step. A sealing gasket 6 is provided in the sealing ring groove 401, and the sealing gasket 6 is pressed between the end face of the nozzle 3 and the limiting step. It is easy to understand that the sealing performance of the threaded connection is improved by the provided sealing gasket 6.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sprinkler head for testing a loop voltage stabilizer, characterized in that: include: A nozzle having a fluid inlet at one end and a spray outlet at the other end; A first spiral core, whose outer wall cooperates with the interior of the nozzle and whose outer wall is provided with a plurality of first spiral channels along the circumferential direction; and The outer wall of the second rotating core matches with the inner wall of the first rotating core, and a plurality of second spiral channels are arranged on the outer wall along the circumferential direction; a central channel is arranged at the center of the second rotating core.

2. The sprinkler head for the test loop voltage stabilizer according to claim 1, characterized in that: The central channel includes a first straight section and a first diameter-expanding section in sequence along the fluid flow direction, and the diameter of the first diameter-expanding section gradually increases along the fluid flow direction.

3. The sprinkler head for the test loop voltage stabilizer according to claim 2, characterized in that: The inner wall of the first swirl core includes a second straight section and a first diameter-reduced section in sequence along the fluid flow direction. The second swirl core cooperates with the second straight section. The diameter of the first diameter-reduced section gradually decreases along the fluid flow direction.

4. The sprinkler head for the test loop voltage stabilizer according to claim 3, characterized in that: The maximum diameter of the first diameter-expanding section is greater than the minimum diameter of the first diameter-reducing section.

5. The sprinkler head for the test loop voltage stabilizer according to any one of claims 1 to 4, characterized in that: The inner wall of the first swirl core is provided with a second diameter expansion section at the end where the fluid flows out, and the diameter of the second diameter expansion section gradually increases along the direction of fluid flow; the outer wall of the first swirl core is provided with a second diameter reduction section at the end where the fluid flows out, and the diameter of the second diameter reduction section gradually decreases along the direction of fluid flow.

6. The sprinkler head for the test loop voltage stabilizer according to claim 5, characterized in that: The inner wall of the nozzle includes a third straight section and a third reduced diameter section in sequence along the fluid flow direction, the first rotating core cooperates with the third straight section, and the diameter of the third reduced diameter section gradually decreases along the fluid flow direction.

7. The sprinkler head for the test loop voltage stabilizer according to any one of claims 1 to 4, characterized in that: The diameter of the spray outlet of the nozzle gradually increases along the flow direction of the fluid.

8. The sprinkler head for a test loop voltage stabilizer according to any one of claims 1 to 4, characterized in that: The first rotating core is provided with a first positioning ring at the end where liquid flows in, and the inner wall of the nozzle is provided with a first positioning step that cooperates with the first positioning ring; the second rotating core is provided with a second positioning ring at the end where liquid flows in, and the inner wall of the first rotating core is provided with a second positioning step that cooperates with the second positioning ring.

9. The sprinkler head for a test loop voltage stabilizer according to any one of claims 1 to 4, characterized in that: The fluid inlet end of the nozzle is connected with a connecting tube, and the connecting tube is connected with a spray connecting tube.

10. The sprinkler head for the test loop voltage stabilizer according to claim 9, characterized in that: The inner wall of the connecting tube is connected to the outer wall of the nozzle by threads; a limiting step is provided on the inner wall of the connecting tube, a sealing ring groove is provided at the limiting step, a sealing gasket is provided in the sealing ring groove, and the sealing gasket is pressed tightly between the end face of the nozzle and the limiting step.

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