Spring annular nozzle arranged on temperature and pressure reducer

Abstract

The invention relates to a nozzle, in particular to a spring annular nozzle arranged on a temperature and pressure reducer. The invention aims to provide a spring annular nozzle arranged on a temperature and pressure reducer, the spring annular nozzle can automatically adjust the amount of sprayed mist according to the pressure of temperature-reducing water so as to improve the atomization effect of the temperature-reducing water, and the spring annular nozzle is simple in structure and low in cost. According to the technical scheme, the spring annular nozzle arranged on the temperature and pressure reducer comprises a water spraying inner sleeve, a water spraying outer sleeve coaxially wrapping the outer circumferential face of the water spraying inner sleeve, a water inlet pipe fixed to the water spraying outer sleeve and two concave flanges symmetrically buckled to the two end faces of the nozzle inner sleeve and the nozzle outer sleeve so as to be communicated with a steam flow channel. The nozzle is characterized in that an annular cavity is formed between the nozzle outer sleeve and the inner wall of the nozzle outer sleeve, a sliding block and a plurality of springs applying force to the sliding block are positioned in the annular cavity in a sliding mode, and a plurality of water spraying holes are formed in the inner wall and the outer wall of the nozzle inner sleeve in a penetrating mode.

Description

Technical Field

[0001] This invention relates to a nozzle, specifically a spring-loaded annular nozzle mounted on a desuperheater / pressure reducer. Background Technology

[0002] CN222624924U discloses a desuperheating water annular nozzle configured on a desuperheater and pressure reducer, characterized in that: the nozzle includes an annular spray inner sleeve, a water trough arranged annularly on the outer circumference of the spray inner sleeve, a plurality of spray holes evenly distributed in the circumferential direction of the spray inner sleeve and with both ends penetrating the inner circumferential surface of the spray inner sleeve and the water trough, a spray outer sleeve coaxially covering the outer circumferential surface of the spray inner sleeve, a water inlet pipe fixed on the spray outer sleeve and connected to the water trough, and concave flanges configured on both end faces of the spray inner sleeve and the spray outer sleeve.

[0003] The drawback of this device is that the amount of mist water sprayed by the nozzle cannot be automatically adjusted according to the change in the water pressure of the desuperheating water. Therefore, the atomization effect of the desuperheating water is not good at low water pressure, resulting in poor steam desuperheating effect. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned background technology and provide a spring annular nozzle that is equipped on a desuperheater and pressure reducer. The spring annular nozzle should be able to automatically adjust the amount of sprayed mist water according to the desuperheating water pressure, thereby improving the atomization effect of the desuperheating water, and has a simple structure and low cost.

[0005] The technical solution provided by this invention is: A spring-loaded annular nozzle mounted on a desuperheater and pressure reducer includes a water-spraying inner sleeve, a water-spraying outer sleeve coaxially covering the outer circumference of the inner sleeve, a water inlet pipe fixed to the outer sleeve, and two concave flanges symmetrically fastened to the two end faces of the inner and outer sleeves to connect the steam flow channel. The feature is that: an annular cavity is formed between the nozzle outer sleeve and the inner wall of the nozzle outer sleeve, a slider and several springs that apply force to the slider are slidably positioned in the annular cavity, and several water spray holes are provided through the inner and outer walls of the nozzle inner sleeve.

[0006] The nozzle sleeve is tubular, and the water inlet pipe is located on the left half of the nozzle sleeve with its axis perpendicular to the axis of the nozzle sleeve.

[0007] The nozzle inner sleeve is a rotating body with an opening at the axial position and coaxially mounted with the nozzle outer sleeve. The opening is a hyperbolic hole with a large diameter at both ends and a small diameter in the middle to generate the Venturi effect. The outer surface of the nozzle inner sleeve has several steps, which are used to cooperate with the water inlet pipe, the slider and several springs.

[0008] The diameter of the nozzle inner sleeve gradually decreases from left to right to form the several steps; wherein the width of the first step is greater than the diameter of the water inlet pipe, and the second step serves as the sliding zone boundary of the slider.

[0009] The plurality of water spray holes are located at the second-level step.

[0010] The slider is an L-shaped annular ring; its inner circumferential surface slides with the surface of the second-level step, while its outer circumferential surface slides with the inner wall surface of the nozzle jacket, thereby forming a gate for controlling the entry of desuperheating water at the junction of the first-level step and the second-level step.

[0011] The nozzle inner sleeve is also provided with a third step for installing a pad block, and several spring positioning posts are fixed on the pad block; the right ends of the several springs are fitted onto these spring positioning posts, and the left ends work together to apply force to the slider to the left.

[0012] Sealing gaskets are respectively provided between the two concave flanges and the two end faces of the nozzle inner sleeve and nozzle outer sleeve to improve the sealing performance of the spring annular nozzle.

[0013] The beneficial effects of this invention are: The slider in this invention can adjust its displacement according to the different pressures of the desuperheating water, thereby opening different numbers of spray holes and spraying out different amounts of atomized water; thus overcoming the defect that the atomization effect of the desuperheating water is poor when the pressure is low, resulting in poor steam desuperheating effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram (sectional view) of the main structure of an embodiment of the present invention.

[0015] Figure 2 yes Figure 1 A schematic diagram of the structure of the water jet jacket.

[0016] Figure 3 yes Figure 1 A schematic diagram of the structure of the inner sleeve of the central water jet.

[0017] Figure 4 yes Figure 1 A schematic diagram of the middle slider.

[0018] Figure 5 yes Figure 1 A schematic diagram of the structure of the spring positioning column.

[0019] Numbering in the diagram: 1. Concave flange; 2. Inlet pipe; 3. Spray sleeve; 4. Spring positioning post; 5. Spring; 6. Flange connection hole; 7. Sealing ring; 8. Inner spray sleeve; 8. First step; 8.1. Second step; 8.2. Third step; 8.3. Slider; 9. Spring positioning post; 10. Spray hole; 11. Balance hole; 12. Detailed Implementation

[0020] The following description, in conjunction with the embodiments shown in the accompanying drawings, provides further details.

[0021] Figure 1 The spring-loaded annular nozzle shown is mounted on the desuperheater and pressure reducer. It includes a water spray inner sleeve 8, a water spray outer sleeve 3 coaxially covering the outer circumference of the water spray inner sleeve, a water inlet pipe 2 fixed on the water spray outer sleeve, and two concave flanges 1 symmetrically fastened to the two end faces of the nozzle inner sleeve and the nozzle outer sleeve to connect the steam flow channel. This is similar to 202420611865.0.

[0022] The improvement of the present invention is that: an annular cavity is formed between the nozzle outer sleeve and the inner wall of the nozzle outer sleeve, an annular slider is slidably positioned in the annular cavity, and several springs are also arranged in the annular cavity and apply force to the slider; several water spray holes are provided on the nozzle inner sleeve, and these water spray holes penetrate the inner and outer walls of the nozzle inner sleeve.

[0023] like Figure 2 As shown, the nozzle sleeve is tubular, and the water inlet pipe is located on the left half of the nozzle sleeve with its axis perpendicular to the axis of the nozzle sleeve.

[0024] like Figure 3 As shown, the nozzle inner sleeve is a rotating body coaxially mounted with the nozzle outer sleeve. Its axial portion has an opening, the size of which at both ends matches the flow channel holes of the concave flange to ensure smooth steam flow. The opening is a hyperbolic orifice with a larger diameter at both ends and a smaller diameter in the middle, facilitating the generation of the Venturi effect during use. The outer surface of the nozzle inner sleeve has several steps, which are used to accommodate the water inlet pipe, the slider 9, and several springs 5.

[0025] The diameter of the nozzle inner sleeve gradually decreases from left to right to form the several steps; wherein the width of the first step 8.1 (i.e., the dimension parallel to the axis of the nozzle inner sleeve) is greater than the diameter of the water inlet pipe, and the second step 8.2 serves as the sliding zone boundary of the slider.

[0026] The aforementioned water spray holes are located on the second-level step; it is recommended that they be located near the junction of the first and second-level steps. These water spray holes are distributed not only circumferentially but also axially.

[0027] like Figure 4As shown, the slider has an L-shaped longitudinal section; its inner circumferential surface slides in contact with the surface of the second-level step, while its outer circumferential surface slides in contact with the inner wall surface of the nozzle sleeve, thereby forming a gate at the junction of the first and second-level steps to control the entry of desuperheating water. Moreover, when the slider is located at the leftmost position of the second-level step, it can completely cover all the water spray holes; at this time, the nozzle is in the closed state.

[0028] The third step 8.3 on the inner sleeve of the nozzle is used to install the pad 10; the pad is circular, and several spring positioning posts 4 are fixed on its left end face; the right ends of the several springs are sleeved on the several spring positioning posts, and the left ends work together to apply force to the slider to the left.

[0029] The second-level step also has balance holes 12 that penetrate the inner and outer walls to avoid affecting the movement of the slider.

[0030] In addition, sealing gaskets 7 are respectively provided between the two concave flanges and the two end faces of the nozzle inner sleeve and the nozzle outer sleeve to improve the sealing performance of the spring annular nozzle; this is the same as the prior art.

[0031] The working principle of this invention is as follows: First, it is coaxially installed with the steam pipe; during operation, desuperheating water enters the annular cavity through the inlet pipe; under the pressure of the desuperheating water, the pressure of the spring is counteracted, causing the slider to shift to the right, opening the spray holes, and the desuperheating water is sprayed into the steam pipe through the spray holes to desuperheat the steam. As the water pressure increases, the displacement of the slider also increases, thereby opening more spray holes and spraying more mist water into the steam pipe, thus achieving the adjustment function. This solves the defects of conventional nozzles, such as non-adjustable nozzles, poor desuperheating water atomization effect under low water pressure, and poor steam desuperheating effect.

Claims

1. A spring-loaded annular nozzle mounted on a desuperheater and pressure reducer, comprising a water spray inner sleeve (8), a water spray outer sleeve (3) coaxially covering the outer circumferential surface of the water spray inner sleeve, a water inlet pipe (2) fixed on the water spray outer sleeve, and two concave flanges (1) symmetrically fastened to the two end faces of the nozzle inner sleeve and the nozzle outer sleeve to connect the steam flow channel. Its features are: An annular cavity is formed between the nozzle sleeve and the inner wall of the nozzle sleeve. A slider (9) and several springs (5) that apply force to the slider are slidably positioned in the annular cavity. Several water spray holes (11) are provided through the inner and outer walls of the nozzle sleeve.

2. The spring-loaded annular nozzle disposed on the desuperheater and pressure reducer according to claim 1, characterized in that: The nozzle sleeve is tubular, and the water inlet pipe is located on the left half of the nozzle sleeve with its axis perpendicular to the axis of the nozzle sleeve.

3. The spring-loaded annular nozzle disposed on the desuperheater and pressure reducer according to claim 2, characterized in that: The nozzle inner sleeve is a rotating body with an opening at the axial position and coaxially mounted with the nozzle outer sleeve. The opening is a hyperbolic hole with a large diameter at both ends and a small diameter in the middle to generate the Venturi effect. The outer surface of the nozzle inner sleeve has several steps, which are used to cooperate with the water inlet pipe, the slider and several springs.

4. The spring-loaded annular nozzle disposed on the desuperheater and pressure reducer according to claim 3, characterized in that: The diameter of the nozzle inner sleeve gradually decreases from left to right to form the several steps; wherein the width of the first step (8.1) is greater than the diameter of the water inlet pipe, and the second step (8.2) serves as the sliding zone boundary of the slider.

5. The spring-loaded annular nozzle disposed on the desuperheater and pressure reducer according to claim 4, characterized in that: The plurality of water spray holes are located at the second-level step.

6. The spring-loaded annular nozzle disposed on the desuperheater and pressure reducer according to claim 5, characterized in that: The slider is an L-shaped annular ring; its inner circumferential surface slides with the surface of the second-level step, while its outer circumferential surface slides with the inner wall surface of the nozzle jacket, thereby forming a gate for controlling the entry of desuperheating water at the junction of the first-level step and the second-level step.

7. The spring-loaded annular nozzle disposed on the desuperheater and pressure reducer according to claim 6, characterized in that: The nozzle inner sleeve is also provided with a third step for installing a pad block, and several spring positioning posts (11) are fixed on the pad block; the right ends of the several springs are fitted onto these spring positioning posts, and the left ends work together to apply force to the slider to the left.

8. The spring-loaded annular nozzle disposed on the desuperheater and pressure reducer according to claim 7, characterized in that: Sealing gaskets (7) are respectively provided between the two concave flanges and the two end faces of the nozzle inner sleeve and nozzle outer sleeve to improve the sealing performance of the spring annular nozzle.

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