CN207661423U - Temperature reducing and pressure reducing system is pressed in one kind - Google Patents
Temperature reducing and pressure reducing system is pressed in one kind Download PDFInfo
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- CN207661423U CN207661423U CN201721748525.9U CN201721748525U CN207661423U CN 207661423 U CN207661423 U CN 207661423U CN 201721748525 U CN201721748525 U CN 201721748525U CN 207661423 U CN207661423 U CN 207661423U
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Abstract
The utility model discloses pressing temperature reducing and pressure reducing system in one kind, its key points of the technical solution are that including air inlet pipe, pressure reducing valve, mixing tube and delivery pipe, pressure reducing valve is connected between air inlet pipe and mixing tube, delivery pipe is connected with mixing tube, the desuperheat mechanism for spraying desuperheating water is connected on mixing tube, it is electrically connected with power supply on switch board, the first executing agency for adjusting decompression valve opening is provided on pressure reducing valve, the first executing agency is connected with switch board and is controlled by switch board.Collection control is implemented in integrated pressure reducing valve and is changed to split settings, by the actuator panel in the first executing agency first, it is changed to and is operated by the first executing agency of switch board output control instruction pair, so as to improve the operating condition of original element, pipe vibration caused by avoiding pressure temperature reducing and pressure reducing system from throttling in underrun pipeline causes the damage of element on pressure reducing valve, improves pressure reducing valve and the stability in use of system.
Description
Technical field
The utility model is related to industrial steam equipment, more particularly to pressing temperature reducing and pressure reducing system in one kind.
Background technology
Reducing-and-cooling plant is a kind of conversion of steam thermal energy and collection device, be widely used in cogeneration of heat and power, central heating,
In the modern industrial productions such as light industry, electric power, chemical industry and weaving.
Modern power engineering and heat energy technology require high tcmpcrauire-higb pressure boiler to generate the high superheated steam of the degree of superheat, but not
It is all different with the temperature of the steam needed for technological process apparatus and air pressure, and in order to ensure that high saturation conveys, boiler
The temperature of generation and air pressure often far surpass needed for some position equipments, and if directly cool down to saturated vapor, overheat is steamed
Vapour can go out since lower heat transfer coefficient reduces efficiency if the dry saturated steam of high pressure is decompressed to low pressure at downstream outlets
Flash evaporation is now crossed, is easy to cause Cavitation to pipeline and valve, thus needs to be carried out at the same time desuperheat to the steam of high pressure superheater
And decompression.
Currently, can apply to pressure-regulating valve in temperature reducing and pressure reducing system, pressure-regulating valve is for adjusting steam flow or subtracting
The flow of warm water, wherein control assembly and executive module have been wholely set on traditional pressure-regulating valve, control assembly passes through defeated
Go out control instruction to executive module to adjust the aperture of pressure-regulating valve.
Currently, in actual production, pressure-regulating valve continuous several times occur can not electric operating the case where, it is multiple through producer
It checks device context situation, finds out pipeline caused by throttling in underrun pipeline due to middle pressure temperature reducing and pressure reducing system
Caused by vibration in regulating valve control assembly power module damage, it is relatively low to cause stress the stability that regulating valve uses, because
There are certain improvements for this.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide pressing temperature reducing and pressure reducing system in one kind,
Have the characteristics that stability in use is high.
The above-mentioned technical purpose of the utility model technical scheme is that：
Temperature reducing and pressure reducing system, including air inlet pipe, pressure reducing valve, mixing tube and delivery pipe, the pressure reducing valve connection are pressed in one kind
Between air inlet pipe and mixing tube, the delivery pipe is connected with mixing tube, is connected on the mixing tube for spraying desuperheating water
Desuperheat mechanism, pressure temperature reducing and pressure reducing system further includes switch board in this, and power supply is electrically connected on the switch board, described to subtract
Be provided in pressure valve for adjust decompression valve opening the first executing agency, first executing agency be connected with switch board and by
It controls in switch board.
Through the above technical solutions, high temperature and high pressure steam enters pressure reducing valve by air inlet pipe, made by the decompression of pressure reducing valve
With the outlet air pressure of pressure reducing valve is less than air inlet pressure, and the steam after decompression is entered by mixing tube in delivery pipe, desuperheat mechanism
Cool down to the steam in mixing tube, reduction steam is flashed caused by due to violent decompression or cavitation, while cooling
Protective effect is played to pressure reducing valve and subsequent pipeline, reduces cavitation of the steam to delivery pipe, and pass through above-mentioned mixing
The setting of pipe can effectively avoid desuperheating water from directly washing away pressure reducing valve inner wall, cause the corrosion of pressure reducing valve inner wall；
Wherein, collection control, be implemented in integrated pressure reducing valve and be changed to split settings, by holding in the first executing agency first
Row device panel is changed to and is operated by the first executing agency of switch board output control instruction pair, to adjust pressure reducing valve
Aperture avoids middle pressure temperature reducing and pressure reducing system in underrun pipeline so as to improve the operating condition of original element
Pipe vibration caused by throttling causes the damage of element on pressure reducing valve, improves pressure reducing valve and the stability in use of system.
Preferably, the desuperheat mechanism includes desuperheat waterpipe, the desuperheat waterpipe according to desuperheating water flow direction successively
It is provided with manual throttle valve, regulating valve, check-valves, the first electric-control stop valve and humidifier, the humidifier and mixing tube
It is connected, first electric-control stop valve is connected with switch board, and for controlling to adjust valve opening is provided in the regulating valve
Two executing agencies, second executing agency are connected with switch board and are controlled by switch board.
Through the above technical solutions, the second executing agency is for controlling to adjust valve opening, the first electric-control stop valve is controlled by
Switch board is used to control the conducting of desuperheat waterpipe, wherein desuperheating water is flowed into from desuperheat waterpipe, will be subtracted by humidifier
Warm water is injected in mixing tube, reduces the temperature of the outlet vapor of pressure reducing valve, and the desuperheating water sprayed by humidifier is effective
The mixed effect of desuperheating water and steam is improved, cooling-down effect of the desuperheating water to steam is improved.
Preferably, the humidifier includes several spray pipes being connected with desuperheat waterpipe, several spray pipes point
It is not arranged in the both sides and top of mixing tube by fog-spray nozzle, the axis of mixing tube both sides fog-spray nozzle is in same level
On.
Through the above technical solutions, spray pipe is located at the both sides and top of mixing tube, mechanical flow core type knot is formed
Structure forms the turbulent flow of high intensity with the steam a fluid stream vertical impact of conveying when desuperheating water enters the region corresponding to fog-spray nozzle
Impact, to ensure that steam and water can be quickly sufficiently mixed.
Preferably, it is connected with liquid flux distributor between several spray pipes and desuperheat waterpipe.
Through the above technical solutions, the desuperheating water aperture that liquid flux distributor is used to distribute between each spray pipe is big
It is small, achieve the purpose that each spray pipe of control sprays spray water flux as a result, wherein by closing mixing tube side or top
The spray pipe in portion improves the effect that cools of steam a fluid stream so as to make steam a fluid stream forms vortex shape to be conveyed；
And by the feedback of vapor (steam) temperature in delivery pipe, by closing one of spray pipe or reducing several sprayings
The flow of pipeline, to achieve the purpose that the speed to steam cooling is adjusted.
Preferably, it is connected with pre- desuperheat pipe between the air inlet pipe and delivery pipe, second is equipped on the pre- desuperheat pipe
Electric-control stop valve, the desuperheat waterpipe are connected with communicating pipe, the communicating pipe between the first electric-control stop valve and check-valves
Be connected with pre- desuperheat pipe by nozzle, third electric-control stop valve be installed on the communicating pipe, second electric-control stop valve and
Third electric-control stop valve is connected to switch board.
Through the above technical solutions, by opening the first electric-control stop valve, the second electric-control stop valve and the automatically controlled cut-off of third
Valve, a small gangs of steam enters pre- desuperheat pipe in air inlet pipe, this strand of steam and the water mist sprayed in communicating pipe carry out hybrid cooling shape
It enters in delivery pipe and is conveyed at steam water interface, the steam of air inlet pipe is shunted in time as a result, is reduced as a result,
The pressure of steam cooling speed, improves the efficiency of steam cooling, pre- desuperheat pipe can be used as bypass duct pair as a result, in mixing tube
10% operating mode that steam flow is less than metered flow is adjusted；
Wherein, the first electric-control stop valve of control is closed, and the second electric-control stop valve and third electric-control stop valve are opened, desuperheat pipe
Road does not cool down to the high steam in mixing tube substantially, a small gangs of steam enters pre- desuperheat pipe, this strand of steam in inlet tube
Carry out preliminary hybrid cooling with the water utilities that is sprayed by nozzle communicating pipe and form steam water interface to enter in mixing tube, then with
It is discharged from delivery pipe after the high-temperature steam of decompression processing is cooled down twice mixing, thus further improves desuperheat machine
The desuperheat regulating ratio of structure, you can the attemperation water flow of atomization ranging from 0.5% ~ 100%, which reaches, accurately controls cooling.
Preferably, it is provided with pressure reducing orifice between the mixing tube and delivery pipe.
Through the above technical solutions, there are many apertures on pressure reducing orifice, when steam flows through aperture, when steam flows through aperture
When, since aisle spare reduces, make the steam pressure flowed through reduction, while can also play the role of noise reduction, current stabilization.
Preferably, the safety valve for pressure release is provided in the delivery pipe.
Through the above technical solutions, delivery pipe is generally longer, and under identical material, its longer bearing capacity of length of pipeline
It is poorer, and the air-flow of steam is often unstable, that is, the air pressure of steam in different periods delivery pipe will appear fluctuation,
If without adjustment, under long-term overvoltage impact, delivery pipe will accelerate damage generate gas leakage situations such as, valve safe to use can will
Steam in delivery pipe ensures within the scope of nominal pressure.
Preferably, pressure detection mechanism and temperature testing organization, the pressure detection mechanism are provided in the delivery pipe
It is connected with temperature testing organization with switch board.
Through the above technical solutions, pressure detection mechanism and temperature testing organization can be with the pressures of steam in at-once monitor pipeline
Force value and temperature value can be regulated and controled according to feedback in time.
In conclusion the utility model having the beneficial effect that in contrast to the prior art：
Collection control is implemented in integrated pressure reducing valve and is changed to split settings, by the actuator in the first executing agency first
Panel is changed to and is operated by the first executing agency of switch board output control instruction pair, to adjust the aperture of pressure reducing valve,
So as to improve the operating condition of original element, middle pressure temperature reducing and pressure reducing system is avoided to be made in the throttling of underrun pipeline
At pipe vibration cause the damage of element on pressure reducing valve, improve pressure reducing valve and the stability in use of system.
Description of the drawings
Fig. 1 is the structural schematic diagram of embodiment；
Fig. 2 is the scheme of installation of humidifier in embodiment；
Fig. 3 is the connection diagram of switch board in embodiment.
Reference numeral：1, air inlet pipe；2, pressure reducing valve；3, mixing tube；4, delivery pipe；5, pressure reducing orifice；6, desuperheat mechanism；
61, desuperheat waterpipe；62, manual throttle valve；63, regulating valve；64, check-valves；65, the first electric-control stop valve；66, spraying machine
Structure；661, spray pipe；662, fog-spray nozzle；663, liquid flux distributor；7, the first executing agency；8, the second executing agency；
9, safety valve；101, pressure gauge；102, pressure transmitter；111, bimetallic thermometer；112, warming resistance；12, pre- desuperheat pipe；
13, the second electric-control stop valve；14, communicating pipe；15, nozzle；16, third electric-control stop valve.
Specific implementation mode
The utility model is described in further detail below in conjunction with attached drawing.
As shown in Figure 1, temperature reducing and pressure reducing system is pressed in one kind, including air inlet pipe 1, pressure reducing valve 2, mixing tube 3 and delivery pipe 4,
Pressure reducing valve 2 is connected to by ring flange between air inlet pipe 1 and mixing tube 3, and delivery pipe 4 is connected with mixing tube 3, wherein mixing tube 3
It is provided with pressure reducing orifice 5 between delivery pipe 4, the desuperheat mechanism 6 for spraying desuperheating water is connected on mixing tube 3.
Middle pressure temperature reducing and pressure reducing system further includes switch board, and power supply is electrically connected on switch board, is powered in the present embodiment
Power supply uses 380V AC powers, the first executing agency 7 for adjusting 2 aperture of pressure reducing valve is provided on pressure reducing valve 2, first holds
Row mechanism 7 is connected with switch board and is controlled by switch board.Desuperheat mechanism 6 include desuperheat waterpipe 61, desuperheat waterpipe 61 according to
The flow direction of desuperheating water is disposed with manual throttle valve 62, regulating valve 63, check-valves 64, the first electric-control stop valve 65 and spraying machine
Structure 66, humidifier 66 are connected with mixing tube 3, and the first electric-control stop valve 65 is connected with switch board, is arranged in regulating valve 63 useful
In the second executing agency 8 for controlling to adjust 63 aperture of valve, second executing agency 8 is connected with switch board and is controlled by control
Cabinet.
It is provided with the safety valve 9 for pressure release in delivery pipe 4, pressure detection mechanism and temperature inspection are provided in delivery pipe 4
Mechanism is surveyed, pressure detection mechanism and temperature testing organization are connected with switch board.Specifically, pressure detection mechanism includes being arranged defeated
Send the pressure gauge 101 and pressure transmitter 102 on pipe 4；Temperature testing organization includes bimetallic thermometer 111 and warming resistance
112.Temperature and air pressure signal can be converted to electric signal and feed back to switch board by pressure transmission device and warming resistance 112.
It should be noted that the decompression process of steam is realized by pressure reducing valve 2 and pressure reducing orifice 5.The pressure of pressure reducing valve 2
Power adjusting is by 102 feedback pressure force value of pressure transmitter to switch board, and switch board exports control instruction to the first executing agency 7
Operation drives the valve rod being connected with 2 flap of pressure reducing valve, and flap is made to move up and down in valve seat, and the size to change aisle spare is come
Achieve the purpose that decompression.The control mode of regulating valve 63 is identical as pressure reducing valve 2, and the present embodiment does not do repetition and repeats.
Specifically, the first executing agency 7 and the second executing agency 8 use motor-driven mode, switch board to be held with first
The connection type of row mechanism 7 and the second executing agency 8 is as shown in Figure 3.
In the present embodiment, in conjunction with shown in Fig. 1 and Fig. 2, humidifier 66 includes several sprays being connected with desuperheat waterpipe 61
Mist pipeline 661, several spray pipes 661 are arranged by fog-spray nozzle 662 in the both sides and top of mixing tube 3,3 liang of mixing tube respectively
The axis of side spray head 662 is in same level, and the fog-spray nozzle 662 at top and the fog-spray nozzle 662 of both sides are in vertical distribution.
Wherein, liquid flux distributor 663 is connected between several spray pipes 661 and desuperheat waterpipe 61.
It should be noted that the steam in delivery pipe 4 when transmission, can be in due to most of under the action of gravity
Part on the lower, that is, the amount of heat of steam stream are accumulated in the lower section of 4 inner cavity of delivery pipe, pass through fluid flow point as a result,
The desuperheating water that the effect of orchestration 663 can spray both sides is more than the desuperheating water that top sprays, to absorb a large amount of accumulation heat rapidly
Amount, and top can be made identical with the hydraulic pressure that both sides spray by liquid flux distributor 663, the water that such both sides spray
End can occur mutually hit to generate strength turbulent flow impact, improve desuperheating water and steam mixed effect.
As shown in Figure 1, being connected with pre- desuperheat pipe 12 between air inlet pipe 1 and delivery pipe 4, second is equipped on pre- desuperheat pipe 12
Electric-control stop valve 13, desuperheat waterpipe 61 are connected with communicating pipe 14 between the first electric-control stop valve 65 and check-valves 64, connection
Pipe 14 is connected by nozzle 15 with pre- desuperheat pipe 12, and third electric-control stop valve 16, the second automatically controlled cut-off are equipped on communicating pipe 14
Valve 13 and third electric-control stop valve 16 are connected to switch board.
As a result, by opening the first electric-control stop valve 65, the second electric-control stop valve 13 and third electric-control stop valve 16, air inlet
A small gangs of steam enters pre- desuperheat pipe 12 in pipe 1, this strand of steam carries out hybrid cooling with the water mist sprayed in communicating pipe 14 and formed
Steam water interface is entered in delivery pipe 4 and is conveyed, and is shunted to the steam of air inlet pipe 1, is reduced as a result, in time as a result,
The pressure of steam cooling speed, improves the efficiency of steam cooling, pre- desuperheat pipe 12 can be used as shunt valve as a result, in mixing tube 3
10% operating mode that road is less than steam flow metered flow is adjusted；
Wherein, the first electric-control stop valve 65 of control is closed, and the second electric-control stop valve 13 and third electric-control stop valve 16 are opened,
Desuperheat pipeline does not cool down to the high steam in mixing tube 3 substantially, a small gangs of steam enters pre- desuperheat pipe 12 in inlet tube,
This strand of steam enters mixed with the preliminary hybrid cooling formation steam water interface of the water utilities progress sprayed by nozzle 15 communicating pipe 14
Close in pipe 3, be then discharged from delivery pipe 4 with after the high-temperature steam of decompression processing is cooled down twice and mixes, thus into
One step improves the desuperheat regulating ratio of desuperheat mechanism 6, you can the attemperation water flow of atomization ranging from 0.5% ~ 100% reaches to cooling
Accurately control.
The above is only the exemplary embodiment of the utility model, the protection model rather than limited the present invention
It encloses, the scope of protection of the utility model is determined by the attached claims.
Claims (8)
1. temperature reducing and pressure reducing system is pressed in one kind, including air inlet pipe (1), pressure reducing valve (2), mixing tube (3) and delivery pipe (4), it is described
Pressure reducing valve (2) is connected between air inlet pipe (1) and mixing tube (3), and the delivery pipe (4) is connected with mixing tube (3), the mixing
The desuperheat mechanism (6) for spraying desuperheating water is connected on pipe (3), which is characterized in that pressure temperature reducing and pressure reducing system further includes in this
Switch board is electrically connected with power supply on the switch board, is provided on the pressure reducing valve (2) and is opened for adjusting pressure reducing valve (2)
The first executing agency (7) of degree, first executing agency (7) are connected with switch board and are controlled by switch board.
2. it is according to claim 1 it is a kind of in press temperature reducing and pressure reducing system, which is characterized in that the desuperheat mechanism (6) includes
Desuperheat waterpipe (61), the desuperheat waterpipe (61) are disposed with manual throttle valve (62) according to the flow direction of desuperheating water, adjust
Save valve (63), check-valves (64), the first electric-control stop valve (65) and humidifier (66), the humidifier (66) and mixing tube
(3) it is connected, first electric-control stop valve (65) is connected with switch board, is provided on the regulating valve (63) for controlling to adjust
Second executing agency (8) of valve (63) aperture, second executing agency (8) are connected with switch board and are controlled by switch board.
3. it is according to claim 2 it is a kind of in press temperature reducing and pressure reducing system, which is characterized in that the humidifier (66) includes
Several spray pipes (661) being connected with desuperheat waterpipe (61), several spray pipes (661) pass through fog-spray nozzle (662) respectively
It is arranged in the both sides and top of mixing tube (3), the axis of mixing tube (3) the both sides fog-spray nozzle (662) is in same level.
4. it is according to claim 3 it is a kind of in press temperature reducing and pressure reducing system, which is characterized in that several spray pipes (661) with
Liquid flux distributor (663) is connected between desuperheat waterpipe (61).
5. pressing temperature reducing and pressure reducing system in one kind according to claim 2, which is characterized in that the air inlet pipe (1) and conveying
It is connected with pre- desuperheat pipe (12) between pipe (4), the second electric-control stop valve (13) is installed on the pre- desuperheat pipe (12), it is described to subtract
Warm water pipe (61) is connected with communicating pipe (14), the communicating pipe between the first electric-control stop valve (65) and check-valves (64)
(14) it is connected with pre- desuperheat pipe (12) by nozzle (15), third electric-control stop valve (16) is installed on the communicating pipe (14),
Second electric-control stop valve (13) and third electric-control stop valve (16) are connected to switch board.
6. pressing temperature reducing and pressure reducing system in one kind according to claim 1, which is characterized in that the mixing tube (3) and conveying
It is provided with pressure reducing orifice (5) between pipe (4).
7. pressing temperature reducing and pressure reducing system in one kind according to claim 1, which is characterized in that be arranged on the delivery pipe (4)
It is useful for the safety valve (9) of pressure release.
8. pressing temperature reducing and pressure reducing system in one kind according to claim 1, which is characterized in that be arranged on the delivery pipe (4)
There are pressure detection mechanism and temperature testing organization, the pressure detection mechanism and temperature testing organization to be connected with switch board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721748525.9U CN207661423U (en) | 2017-12-14 | 2017-12-14 | Temperature reducing and pressure reducing system is pressed in one kind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721748525.9U CN207661423U (en) | 2017-12-14 | 2017-12-14 | Temperature reducing and pressure reducing system is pressed in one kind |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207661423U true CN207661423U (en) | 2018-07-27 |
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ID=62941412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721748525.9U Active CN207661423U (en) | 2017-12-14 | 2017-12-14 | Temperature reducing and pressure reducing system is pressed in one kind |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207661423U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404920A (en) * | 2021-06-09 | 2021-09-17 | 常州华伦热电有限公司 | Accurate pressure regulating pipeline device based on supply of desuperheating water |
-
2017
- 2017-12-14 CN CN201721748525.9U patent/CN207661423U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404920A (en) * | 2021-06-09 | 2021-09-17 | 常州华伦热电有限公司 | Accurate pressure regulating pipeline device based on supply of desuperheating water |
| CN113404920B (en) * | 2021-06-09 | 2023-07-07 | 常州华伦热电有限公司 | Accurate pressure regulating pipeline device based on temperature reduction water supply |
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