CN214974977U - Split spring back pressure type atomizing nozzle type temperature and pressure reducer - Google Patents
Split spring back pressure type atomizing nozzle type temperature and pressure reducer Download PDFInfo
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- CN214974977U CN214974977U CN202121762095.2U CN202121762095U CN214974977U CN 214974977 U CN214974977 U CN 214974977U CN 202121762095 U CN202121762095 U CN 202121762095U CN 214974977 U CN214974977 U CN 214974977U
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Abstract
The utility model provides a split type spring back pressure type atomizing nozzle type temperature and pressure reducer, which has compact structure, can realize flow regulation, effectively avoid the phenomenon that the temperature reducing water is not atomized or is insufficiently atomized, prevent the condition that high-temperature and high-pressure steam flows backwards, and has good safety; including the temperature and pressure reduction valve body, the temperature and pressure reduction valve body part that is connected with the atomizing nozzle subassembly is arranged in steam conduit, the atomizing nozzle subassembly includes the nozzle body, the case, this external cover of nozzle has the position sleeve, the case is connected with the position sleeve through the fixed pin after this internal passing of nozzle, the spout end and the case outer wall part in close contact with of nozzle body are sealed, be equipped with the temperature reduction water runner that the hoop was arranged on the nozzle body, it has the spring to keep away from to connect between this tip of nozzle of temperature reduction water runner and the position sleeve, the case removes to the steam flow direction through the pressure differential that forms between temperature reduction water and the steam, make to be open mode and form the orifice between case and the sealed face of nozzle body.
Description
Technical Field
The utility model relates to the technical field of valves, specifically be split type spring back pressure formula atomizing nozzle type pressure reducer that reduces temperature.
Background
The temperature and pressure reducer is an indispensable temperature and pressure regulating component in a boiler heating system and an important pressure bearing component, so that the temperature and pressure reducer has very important significance for the safe and economic operation of the whole boiler heating system in the industries of smelting, metallurgy and the like in order to ensure the safe and reliable operation of the boiler heating system.
The most important performance index of the temperature and pressure reducer is the atomization effect of the atomizing nozzle of the temperature and pressure reducer, if the temperature reducing water sprayed out from the atomizing nozzle is not atomized or is not atomized sufficiently, the temperature reducing water cannot be mixed with high-temperature high-pressure steam rapidly, and the aim of instantly reducing and controlling the temperature of secondary steam cannot be achieved, so that the temperature fluctuation of the secondary steam is large, the temperature is higher than the temperature required by actual use, meanwhile, if the sprayed temperature reducing water cannot be fully absorbed by the high-temperature high-pressure steam, the temperature is accumulated on the inner wall of a steam main pipeline easily, and the steam main pipeline can crack possibly to cause safety accidents; in addition, when the temperature-reducing water regulating valve is closed, high-temperature and high-pressure steam is likely to flow back into the pipeline of the temperature-reducing and pressure-reducing device through the atomizing nozzle, and safety accidents are also caused.
Disclosure of Invention
In order to the problem, the utility model provides a split type spring back pressure formula atomizing nozzle type temperature and pressure reducer, its compact structure can realize flow control, effectively avoids the desuperheating water not atomized or the insufficient phenomenon of atomizing, and can prevent the condition that high temperature high pressure steam flows backward, and the security is good.
The technical scheme is as follows: split type spring back pressure atomizing nozzle type temperature and pressure reducer, including fixed intercommunication in the temperature and pressure reducer valve body between temperature reduction water pipeline and steam conduit, be connected with atomizing nozzle assembly temperature and pressure reducer valve body part is arranged in the steam conduit, atomizing nozzle assembly includes nozzle body, its characterized in that: the atomizing nozzle component further comprises a valve core, a positioning sleeve is sleeved outside the nozzle body, the valve core is connected with the positioning sleeve through a fixing pin after penetrating through the nozzle body, the nozzle end of the nozzle body is in close contact with and sealed with the outer wall part of the valve core, a desuperheating water flow passage arranged annularly is arranged on the nozzle body, the desuperheating water flow passage is far away from the end part of the nozzle body and the positioning sleeve, a spring is connected between the positioning sleeve and the valve core, and the valve core moves towards the steam flowing direction through the pressure difference formed between the desuperheating water and steam, so that the valve core and the sealing surface of the nozzle body are in an open state to form a spray hole which enables the desuperheating water to be sprayed in an umbrella-shaped atomization mode.
It is further characterized in that:
the outer wall of the nozzle body is provided with external threads so as to be hermetically connected to the temperature and pressure reducing valve body through threads;
hard alloy is welded on the sealing end faces of the valve core and the nozzle body in a surfacing mode, and wear-resistant coatings are arranged on the inner surfaces of the nozzle body and the nozzle body;
6 temperature-reducing water flow passages which are annularly arranged are arranged on the nozzle body, and 6 temperature-reducing water cavities communicated with the temperature-reducing water flow passages are formed between the nozzle body and the valve core;
the desuperheating water flow passage and the central axis of the nozzle body are obliquely arranged in a gathering manner at an included angle; and the included angle between the inclined plane of the temperature-reducing water flow passage and the reference plane of the nozzle body is 25-35 degrees;
an acute angle is formed between the spraying direction of the spray holes and the central axis direction of the nozzle body.
The utility model has the advantages that the structure is compact, after the desuperheating water enters the nozzle body from the desuperheating pressure reducer valve body, because the pressure difference exists between the desuperheating water and the secondary steam at the nozzle end of the nozzle body, the atomization power can be generated, and the valve core and the positioning sleeve are pushed to overcome the action force of the spring and move towards the steam flowing direction, so that the valve core and the sealing part of the nozzle body are in an open state, and a spray hole which enables the desuperheating water to be in umbrella-shaped atomization spraying is formed, so as to be more beneficial to mixing with the high-temperature high-pressure steam in the steam pipeline, the purposes of desuperheating and depressurization of the high-temperature high-pressure steam are realized, the phenomenon that the desuperheating water is not atomized or insufficiently is effectively avoided, and the flow regulation can be realized through the opening and closing angle of the valve core, meanwhile, when the desuperheating water is closed, the pressure difference does not exist between the desuperheating water and the secondary steam at the nozzle end of the nozzle body, because of the spring acts, the valve core can be automatically closed, so that high-temperature and high-pressure steam is prevented from being poured into a pipeline of the temperature and pressure reducing device, and the safety is good.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the open position of the atomizing nozzle assembly of the present invention;
FIG. 3 is a schematic view of the closed state of the atomizing nozzle assembly of the present invention;
FIG. 4 is a schematic structural view of the nozzle body of the present invention;
FIG. 5 is a schematic diagram of the right side view of the structure of FIG. 4;
fig. 6 is a schematic view of the assembly structure of the present invention.
Detailed Description
As shown in fig. 1-6, the split spring back pressure type atomizing nozzle type temperature and pressure reducer of the present invention comprises a temperature and pressure reducer valve body 3 fixedly connected between a temperature reducer water pipeline 1 and a steam pipeline 2, a temperature and pressure reducer valve body 3 connected with 3 groups of atomizing nozzle assemblies 4 (the number of groups can be correspondingly increased or decreased according to the flow and pressure of the temperature reducer water) is arranged in the steam pipeline 2, the atomizing nozzle assemblies 4 comprise a nozzle body 5 and a valve core 6, a positioning sleeve 7 is sleeved outside the nozzle body 5, the valve core 6 is connected with the positioning sleeve 7 through a fixing pin 8 after passing through the nozzle body 5, the nozzle end of the nozzle body 5 is tightly contacted and sealed with the outer wall part of the valve core 6, a temperature reducer water flow passage 9 arranged annularly is arranged on the nozzle body 5, a spring 10 is connected between the end of the nozzle body 5 far away from the temperature reducer water flow passage 9 and the positioning sleeve 7, the valve core 6 moves towards the steam flowing direction through the pressure difference formed between the temperature reducer water and the steam, the valve core 6 and the sealing surface of the nozzle body 5 are opened to form a spray hole 11 for spraying the temperature-reducing water in an umbrella shape.
Wherein, atomizing nozzle subassembly 4 fixed mounting is in one side of temperature reduction pressure reducer valve body 3, inserts in steam conduit 2 together with temperature reduction pressure reducer valve body 3, and the opening direction of its case 6 is unanimous with steam outlet direction. The steam pipeline 2 is provided with a shock-proof pressure gauge 12, a bimetallic thermometer 13 and a temperature transmitter 14.
The outer wall of the nozzle body 5 is provided with external threads so as to be connected to the temperature and pressure reduction valve body 3 through thread sealing.
Hard alloy is welded on the sealing end faces of the valve core 6 and the nozzle body 5 in a surfacing mode to reduce scouring; the nozzle body 5 and the inner surface of the nozzle body 5 are provided with wear-resistant coatings (not shown).
The nozzle body 5 is provided with 6 temperature-reducing water flow passages 9 which are annularly arranged, and the number of the temperature-reducing water flow passages can be correspondingly increased or decreased according to the flow and the pressure of the temperature-reducing water; 6 temperature-reducing water cavities 15 communicated with the temperature-reducing water flow channel 9 are formed between the nozzle body 5 and the valve core 6; the temperature-reducing water flow passages 9 and the central axis of the nozzle body 5 are obliquely arranged in a gathering manner at an angle of 15-35 degrees, preferably 15 degrees, and an included angle between the inclined plane of each temperature-reducing water flow passage 9 and the reference plane 24 of the nozzle body 5 is 25-35 degrees, preferably 25 degrees, so that a better differential pressure acting force can be formed to push the valve core 6 to move; the spraying direction of the spray holes 11 is 30-45 degrees, preferably 40 degrees, with the central axis direction of the nozzle body 5, that is, the spraying direction of the spray holes 11 is 40 degrees with the steam flowing direction, so as to better realize the mixing effect.
The working principle of the utility model is that the temperature-reducing water enters the temperature-reducing water regulating valve 18 through the filter 16 and the first stop valve 17, after the flow and the pressure of the desuperheating water are adjusted and controlled by the desuperheating water adjusting valve 18, the desuperheating water enters the atomizing nozzle component 4 through the second stop valve 19, the check valve 20 and the desuperheating pressure reducer valve body 3, because the pressure difference exists between the desuperheating water and the secondary steam at the nozzle end of the nozzle body 5, the pressure difference overcomes the elastic force of the spring 10 to push the valve core 6 and the positioning sleeve 7 to move towards the steam flowing direction, namely the valve core 6 is opened, and because of the formation of the spray hole 11, the atomization power is generated, after centrifugal dispersion, the sprayed temperature-reducing water is atomized into superfine water drops which are dispersed centrifugally and sprayed in an umbrella-shaped atomization manner, the steam is mixed with the high-temperature high-pressure steam in the steam pipeline 2, so that the purposes of reducing the temperature and the pressure of the high-temperature high-pressure steam are achieved; when the temperature-reducing water regulating valve 18 is closed, no pressure difference exists between the temperature-reducing water and the secondary steam at the nozzle port end of the nozzle body 5, and the valve core 6 and the positioning sleeve 7 reset together under the action force of the spring 10, namely the valve core 6 is closed, so that the high-temperature and high-pressure steam is prevented from pouring into a pipeline of the temperature-reducing pressure reducer.
The acting force of the spring 10 can be adjusted by changing the position of the fixing pin 8, namely, the fixing pin 8 is inserted after the position of the valve core 6 is set according to actual conditions, so that various pressure differences between the desuperheating water and the secondary steam at the nozzle port end of the nozzle body 5 can be adapted.
In the figure, 21 is a third stop valve; 22 is a temperature-reducing water inlet; and 23 is a steam inlet.
The direction of the arrows in fig. 2 and 3 indicates the direction of the desuperheating water flow.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. Split type spring back pressure atomizing nozzle type temperature and pressure reducer, including fixed intercommunication in the temperature and pressure reducer valve body between temperature reduction water pipeline and steam conduit, be connected with atomizing nozzle assembly temperature and pressure reducer valve body part is arranged in the steam conduit, atomizing nozzle assembly includes nozzle body, its characterized in that: the atomizing nozzle component further comprises a valve core, a positioning sleeve is sleeved outside the nozzle body, the valve core is connected with the positioning sleeve through a fixing pin after penetrating through the nozzle body, the nozzle end of the nozzle body is in close contact with and sealed with the outer wall part of the valve core, a desuperheating water flow passage arranged annularly is arranged on the nozzle body, the desuperheating water flow passage is far away from the end part of the nozzle body and the positioning sleeve, a spring is connected between the positioning sleeve and the valve core, and the valve core moves towards the steam flowing direction through the pressure difference formed between the desuperheating water and steam, so that the valve core and the sealing surface of the nozzle body are in an open state to form a spray hole which enables the desuperheating water to be sprayed in an umbrella-shaped atomization mode.
2. The split spring back-pressure atomizing nozzle type temperature and pressure reducer according to claim 1, characterized in that: the outer wall of the nozzle body is provided with external threads so as to be connected to the temperature and pressure reduction valve body in a sealing mode through threads.
3. The split spring back-pressure atomizing nozzle type temperature and pressure reducer according to claim 1, characterized in that: hard alloy is welded on the sealing end faces of the valve core and the nozzle body in a surfacing mode, and wear-resistant coatings are arranged on the inner surfaces of the nozzle body and the nozzle body.
4. The split spring back-pressure atomizing nozzle type temperature and pressure reducer according to claim 1, characterized in that: the nozzle body is provided with 6 temperature-reducing water flow passages which are annularly arranged, and 6 temperature-reducing water cavities communicated with the temperature-reducing water flow passages are formed between the nozzle body and the valve core.
5. The split spring back-pressure atomizing nozzle type temperature and pressure reducer according to claim 1, characterized in that: the desuperheating water flow passage and the central axis of the nozzle body are obliquely arranged in a gathering manner at an included angle; and the included angle between the inclined plane of the temperature-reducing water flow passage and the reference plane of the nozzle body is 25-35 degrees.
6. The split spring back-pressure atomizing nozzle type temperature and pressure reducer according to claim 1, characterized in that: an acute angle is formed between the spraying direction of the spray holes and the central axis direction of the nozzle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121762095.2U CN214974977U (en) | 2021-07-30 | 2021-07-30 | Split spring back pressure type atomizing nozzle type temperature and pressure reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121762095.2U CN214974977U (en) | 2021-07-30 | 2021-07-30 | Split spring back pressure type atomizing nozzle type temperature and pressure reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214974977U true CN214974977U (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121762095.2U Active CN214974977U (en) | 2021-07-30 | 2021-07-30 | Split spring back pressure type atomizing nozzle type temperature and pressure reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214974977U (en) |
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2021
- 2021-07-30 CN CN202121762095.2U patent/CN214974977U/en active Active
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