CN201032392Y - Heat medium heater expanding tank nitrogen enveloping pressure regulator - Google Patents
Heat medium heater expanding tank nitrogen enveloping pressure regulator Download PDFInfo
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- CN201032392Y CN201032392Y CNU2007201488855U CN200720148885U CN201032392Y CN 201032392 Y CN201032392 Y CN 201032392Y CN U2007201488855 U CNU2007201488855 U CN U2007201488855U CN 200720148885 U CN200720148885 U CN 200720148885U CN 201032392 Y CN201032392 Y CN 201032392Y
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- nitrogen
- expansion drum
- heating agent
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Abstract
The utility model relates to a nitrogen sealed voltage stabilizer of a heat medium furnace expansion tank of nitrogen sealed heat medium heating furnace expansion tank. The utility model relates to the technical field of the heat exchanging devices and pipeline systems with no direct contact with heat exchanging mediums, which are not included in other sub-categories. The output of a nitrogen bottle (1) is divided into two ways through a pressure maintaining valve (2) and a nitrogen pipeline (3) and one way is connected with a magnetic charging valve (5) while the other way manually charging valve (6) and a slipknot (7); the two ways after being connected in parallel are mutually connected with a gas-phase space of the expansion tank (13); meanwhile, one way of the gas-phase space of the expansion tank (13) after being connected with a discharge magnetic valve (4] is connected with a discharge vent (15) while the other way thereof is connected with a manual valve (11), an isolation tank (10] and a pressure meter with electric joint (9) in series; the control ends of the discharge magnetic valve (4) and the magnetic charging valve (5) together with the output end of the pressure meter with electric joint (9) are all electrically connected with the controller lines (14). The nitrogen sealed voltage stabilization of the voltage stabilizer is reliable and accurate, being safe and convenient as well as energy-saving.
Description
Technical field
The utility model is a kind of heating agent stove expansion drum nitrogen envelope voltage-stablizer of heating agent heating furnace expansion drum nitrogen envelope.Relate to exclude other group heat exchange medium not directly the contact heat-exchange device and pipe-line system technical field.
Background technology
The heating agent stove is the firing equipment that many industries adopt.For avoiding the heating agent oxidation, the heating agent stove needs supporting nitrogen covering protection device, and produces stable nitrogen pressure.At present nitrogen covering protection device mainly adopts the pressure maintaining valve technology to realize the nitrogen covering protection, and this just needs pressure maintaining valve that very high sensitivity is arranged, but this series products all not too reaches a standard at present in the world, thereby is difficult to realize in the heating agent expansion drum automatic nitrogen protection.Introduced 10 4650KW heating agent stoves as 1985 from the U.S., one of this type of furnace shortcoming is that heat medium temperature reaches more than 100 ℃ in the heating agent expansion drum, for avoiding the heating agent oxidation, must have nitrogen to cover in the heating agent expansion drum.Former nitrogen covering system is realized voltage stabilizing work by a pressure maintaining valve and a safety valve.Normal pressure is 0.05MPa in the nitrogen pot, when pressure is lower than this value by pressure maintaining valve tonifying Qi in jar, when pressure is higher than this value by safety valve exhaust outside jar.Because the pressure maintaining valve definite value only is 0.05MPa, this just needs pressure maintaining valve that very high sensitivity is arranged, thereby is difficult to realize in the heating agent expansion drum automatic nitrogen protection.If with manual throwing nitrogen, the consumption of the annual nitrogen of one side is big (annual consumption is more than 80 bottles) too, moves the post personnel on the other hand sometimes and lacks a sense of responsibility, and forgets to throw nitrogen, so just quickens the heating agent oxidation, and the heating agent life-span is shortened greatly.After have that being improved to shunts in a well by the pressure maintaining valve liquid feeding realizes heating agent expansion drum nitrogen envelope, but, and make nitrogen envelope system down also because the pressure maintaining valve quality does not pass a test, we can say that the nitrogen envelope system of present domestic heating agent expansion drum is in the imperfection state mostly.
The utility model content
The purpose of this utility model is that a kind of heating agent heating furnace expansion drum nitrogen of design seals reliably, a kind of heating agent stove expansion drum nitrogen seals voltage-stablizer accurately.
Formation of the present utility model as shown in Figure 1, it mainly is made up of nitrogen cylinder 1, pressure maintaining valve 2, vent discharge magnet valve 4, inflation magnetic valve 5, Pressure gauge 8, electro connecting pressure gauge 9, sealing chamber 10, hand-operated valve 11, expansion drum 13, controller 12 and control circuit.Nitrogen cylinder 1 output is divided into two-way behind pressure maintaining valve 2, nitrogen pipeline 3, one the tunnel connects inflation magnetic valve 5, the moving charge valve 6 of another road catcher and slip-knot 7, connect the gas-phase space of expansion drum 13 after the two-way parallel connection jointly, connect drain 15 after the gas-phase space of expansion drum 13 also has one the tunnel to connect vent discharge magnet valve 4 simultaneously, another road is connected in series hand-operated valve 11, sealing chamber 10, electro connecting pressure gauge 9 successively, and vent discharge magnet valve 4, the control end of inflation magnetic valve 5 and the output of electro connecting pressure gauge 9 all are electrically connected by controller line 14 with controller 12; Whole system is installed in the instrument box.
Wherein hand-operated valve 11 is a manual ball valve; Pressure gauge 8 is an ordinarily manometer; Controller 12 is Programmable Logic Controller (PLC).
Electro connecting pressure gauge 9 is as pressure indication comparison and setting pressure formulation value usefulness, and electro connecting pressure gauge connects sealing chamber 10 9 times, is full of insulating liquid in the sealing chamber 10, and sealing chamber 10 times connects to expansion drum 13 through isolation pot valve 11; Sealing chamber should be avoided being inverted behind the enough isolation liquid, in case insulating liquid runs off, causes the bourdon tube in the gas phase heating agent corrosion Pressure gauge of carrying secretly in the nitrogen.
The control circuit of this heating agent stove expansion drum nitrogen envelope voltage-stablizer as shown in Figure 2, the alternating current 220V power supply connects three parts in parallel through switch: the one, and indicator lamp HL1, the 2nd, 2# inflates line solenoid valve bag VC automatically and connects with J1, the KT1 of parallel connection with indicator lamp HL2 parallel connection again, and the 3rd, 3# releasing pressure automatically line solenoid valve bag VC connects with J2, the KT2 of parallel connection with indicator lamp HL3 parallel connection again; The alternating current 220V power supply is added to the input of power supply through the 24V Switching Power Supply simultaneously, the 24V of 24V Switching Power Supply output is added on five partial circuits in parallel: the one, connect under J1 line bag and J3, the SP1, the 2nd, KT1 line bag is connected with J1, the 3rd, connect on J3 line bag and the SP1, the 4th, J2 line bag is connected with J3, and the 5th, KT2 line bag is connected with J2.
Wherein J1, J2, J3, HH53P are auxiliary reclay; SP1 is the electric contact of electro connecting pressure gauge 9; J1, J2, AT8MN are power-off delay relay.
The control circuit of (PLC) able to programme controller 12 as shown in Figure 3, S0 is a touch switch among the figure, M1 for the inflation magnetic valve, M2 is a pressure-releasing electromagnetic valve, FU is a fuse.Between 0001 and 0002 end of-24V and (PLC) able to programme controller 12, be connected to touch switch S0, between the L2/N and 1001,1002 of (PLC) able to programme controller 12,1003 ends, be connected to fuse FU, indicator lamp HL2 in parallel and inflation magnetic valve M1, indicator lamp HL3 and pressure-releasing electromagnetic valve M2 in parallel respectively.
After switch S 1 was closed and connected power supply, power supply indicator HL1 was bright.When nitrogen pressure is lower than 0.02MPa, connect 0001, HL2 is bright for inflation magnetic valve lamp, and the inflation magnetic valve is opened, and begins inflation, and pressure disconnects after greater than 0.02MPa, the inflation closed electromagnetic valve, inflation magnetic valve lamp HL2 goes out; When nitrogen pressure is higher than 0.06MPa, connect 0002, the magnetic valve lamp HL3 that loses heart is bright, and disappointing magnetic valve is opened disappointing, and pressure disconnects after being lower than 0.06MPa, the closed electromagnetic valve that loses heart, the magnetic valve lamp HL3 that loses heart goes out.
This voltage-stabilizing system is installed in the instrument box, and upper box part has manual ball valve 11, is normally closed during voltage-stablizer 2 normal operations, manually inflation usefulness during as the fault emergency rating.The middle part is to inflate magnetic valve 5 automatically, and its lower-left pipe connects decompression nitrogen cylinder 1.The bottom is automatic vent discharge magnet valve 4, and its lower-left pipe connects superpressure drain 15, and the bottom right pipe connects expansion drum 13 gas-phase spaces, and the low inflation and the high pressure that are used for expansion drum 13 lose heart.An ordinarily manometer 8 and an electro connecting pressure gauge 9 are equipped with in the upper right side in the case, use as pressure indication comparison and setting pressure formulation value, electro connecting pressure gauge 9 is divided into sealing chamber 10, in be full of insulating liquid, sealing chamber should be avoided being inverted behind the enough isolation liquid, in case insulating liquid runs off, cause the bourdon tube in the gas phase heating agent corrosion Pressure gauge of carrying secretly in the nitrogen, sealing chamber 10 times connects to expansion drum 13 through isolating pot valve 11.Power supply indicator, inflation indicator lamp, the indicator lamp that loses heart, indication state of a control, charge valve state and gas bleeder valve state are housed being equipped with in the bin internal control making sheet on Programmable Logic Controller 12 (PLC) the control cabinet panel.A buzzer is arranged above the indicator lamp, and after inflation and losing heart 2 minutes, air pressure provides sound and light alarm when not being lower than disappointing the setting value.
Therefore this voltage-stabilizing system utilizes Programmable Logic Controller 12 (PLC) control inflation magnetic valve 5 and vent discharge magnet valve 4 automatically automatically, realizes the automatic nitrogen envelope voltage stabilizing of expansion drum 13, and its nitrogen envelope voltage stabilizing is reliable, accurately, both safely, save trouble, save resource again.
Description of drawings
A kind of heating agent stove of Fig. 1 expansion drum nitrogen envelope voltage-stablizer pie graph
A kind of heating agent stove of Fig. 2 expansion drum nitrogen envelope regulator control circuit figure
A kind of heating agent stove of Fig. 3 expansion drum nitrogen envelope voltage-stablizer PLC internal control circuit figure
1-nitrogen cylinder, 2-pressure maintaining valve wherein
3-nitrogen pipeline, 4-vent discharge magnet valve
5-inflation magnetic valve 6-manual charge valve
7-slip-knot, 8-Pressure gauge
9-electro connecting pressure gauge, 10-sealing chamber
11-hand-operated valve, 12-controller
13-expansion drum, 14-controller line
15-drain
The specific embodiment
Embodiment. the specific embodiment of the present utility model is described and the utility model is further described with this example.This example is an experimental prototype, and it constitutes as Fig. 1, Fig. 2, shown in Figure 3.Hand-operated valve 11 selects the DN20 manual ball valve; Inflation magnetic valve 5 selects DN20 electrical ball valve (voltage: 220V, MODEL:2W-200-20, TEMP:-5-80 degree); Vent discharge magnet valve 4 selects DN20 electrical ball valve (voltage: 220V, MODEL:2W-200-20, TEMP:-5-80 degree; ); Pressure gauge 8 selects ordinarily manometer range 0～0.16MPa; Electro connecting pressure gauge 9 selects magnetic to help formula electro connecting pressure gauge range 0～0.16MPa; The high performance programmable controller that controller 12 selects Japan OMRON to produce; Control circuit is pressed Fig. 2 and is connected; The PLC internal control circuit is pressed Fig. 3 and is connected.
This voltage-stabilizing system by above-mentioned device and circuit production, be installed in the instrument box, upper box part has DN20 manual ball valve 11, is normally closed during the normal operation of voltage-stablizer 2, during as the fault emergency rating manually inflation use.The middle part is DN20 inflation magnetic valve 5, and its lower-left pipe connects decompression nitrogen cylinder 1.The bottom is a DN20 vent discharge magnet valve 4, and its lower-left pipe connects superpressure drain 15, and the bottom right pipe connects expansion drum 13 gas-phase spaces, and the low inflation and the high pressure that are used for expansion drum 13 lose heart.An ordinarily manometer 8 and an electro connecting pressure gauge 9 are equipped with in the upper right side in the case, use as pressure indication comparison and setting pressure formulation value, electro connecting pressure gauge 9 is divided into sealing chamber 10, in be full of insulating liquid, sealing chamber should be avoided being inverted behind the enough isolation liquid, in case insulating liquid runs off, cause the bourdon tube in the gas phase heating agent corrosion Pressure gauge of carrying secretly in the nitrogen, sealing chamber 10 times connects to expansion drum 13 through sealing chamber hand-operated valve 11.Programmable Logic Controller (PLC) 12 is housed in bin internal control making sheet, power supply indicator, inflation indicator lamp, the indicator lamp that loses heart is housed, indication state of a control, charge valve state and gas bleeder valve state on the control cabinet panel.A buzzer is arranged above the indicator lamp, and after inflation and losing heart 2 minutes, air pressure provides sound and light alarm when not being lower than disappointing the setting value.
This example in use, the nitrogen seal pressure is set by operating personnel.For example: expansion drum 13 internal pressures require to be controlled between the 0.02MPa-0.06MPa, then electro connecting pressure gauge 9 lower limit pointers should be threaded to the 0.02MPa place, and upper limit pointer is threaded to 0.06MPa.Behind the device start: (1) is then inflated magnetic valve 5 (low pressure) and is opened if expansion drum 13 internal pressures are lower than 0.02MPa, and nitrogen cylinder 1 charges into nitrogen to expansion drum 13 and boosts; When arriving the state of 0.02MPa, voltage stabilizing; (2) when the heating agent intensification in service of heating agent system, gas expansion drum 13 internal pressures are elevated to 0.06MPa, and electro connecting pressure gauge 9 upper limit pointers are connected, and vent discharge magnet valve 4 is opened pressure release, and delays time and closed vent discharge magnet valve 4 in ten seconds; After expansion drum 13 internal pressures were lower than 0.06MPa, system entered the voltage stabilizing state between the 0.02MPa-0.06MPa again; (3) gas cooled in expansion drum 13 after the blowing out of heating agent stove, expansion drum 13 internal pressures are lower than 0.02MPa, and inflation magnetic valve 5 is opened, and nitrogen cylinder 1 charges into nitrogen to expansion drum 13, boosts; When arriving the state of 0.02MPa, voltage stabilizing.
Reach repeatedly simulated test through advanced development, the advantage of this system is: expansion drum 8 nitrogen overburden pressures can manually be set according to arts demand, high performance programmable controller (PLC) control of adopting Japan OMRON to produce has improved pressure controlled stability and reliability greatly.Simultaneously safely, stable, easy, economic and practical.
Claims (4)
1. a kind of heating agent stove expansion drum nitrogen of a heating agent heating furnace expansion drum nitrogen envelope seals voltage-stablizer, it is characterized in that it is mainly by nitrogen cylinder [1], pressure maintaining valve [2], vent discharge magnet valve [4], inflation magnetic valve [5], Pressure gauge [8], electro connecting pressure gauge [9], sealing chamber [10], hand-operated valve [11], expansion drum [13], controller [12] and control circuit are formed, nitrogen cylinder [1] output is through pressure maintaining valve [2], nitrogen pipeline is divided into two-way after [3], one the tunnel connects inflation magnetic valve [5], moving charge valve [6] of another road catcher and slip-knot [7], connect the gas-phase space of expansion drum [13] after the two-way parallel connection jointly, connect drain [15] after the gas-phase space of expansion drum [13] also has one the tunnel to connect vent discharge magnet valve [4] simultaneously, another road is connected in series hand-operated valve [11] successively, sealing chamber [10], electro connecting pressure gauge [9], and vent discharge magnet valve [4], the control end of inflation magnetic valve [5] and the output of electro connecting pressure gauge [9] all are electrically connected by controller line [14] with controller [12]; Whole system is installed in the instrument box.
2. a kind of heating agent stove expansion drum nitrogen envelope voltage-stablizer according to claim 1 is characterized in that connecing sealing chamber [10] in electro connecting pressure gauge [9] below, and sealing chamber is full of insulating liquid in [10], connects to expansion drum [13] through isolating pot valve [11] under the sealing chamber [10].
3. a kind of heating agent stove expansion drum nitrogen envelope voltage-stablizer according to claim 1, it is characterized in that described control circuit is that the alternating current 220V power supply connects three parts in parallel through switch: the one, indicator lamp HL1, the 2nd, 2# inflates line solenoid valve bag VC automatically and connects with J1, the KT1 of parallel connection with indicator lamp HL2 parallel connection again, and the 3rd, 3# releasing pressure automatically line solenoid valve bag VC connects with J2, the KT2 of parallel connection with indicator lamp HL3 parallel connection again; Exchange 22 0V power supplys simultaneously and be added to the input of power supply through the 24V Switching Power Supply, the 24V of 24V Switching Power Supply output is added on five partial circuits in parallel: the one, connect under J1 line bag and J3, the SP1, the 2nd, KT1 line bag is connected with J1, the 3rd, connect on J3 line bag and the SP1, the 4th, J2 line bag is connected with J3, and the 5th, KT2 line bag is connected with J2.
4. a kind of heating agent stove expansion drum nitrogen envelope voltage-stablizer according to claim 1, it is characterized in that described controller [12] between 0001 and 0002 end of-24V and (PLC) able to programme controller [12], being connected to touch switch S0, between the L2/N and 1001,1002 of (PLC) able to programme controller [12], 1003 ends, be connected to fuse FU, indicator lamp HL2 in parallel respectively and inflate the indicator lamp HL3 and the pressure-releasing electromagnetic valve M2 of magnetic valve M1, parallel connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201488855U CN201032392Y (en) | 2007-04-24 | 2007-04-24 | Heat medium heater expanding tank nitrogen enveloping pressure regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201488855U CN201032392Y (en) | 2007-04-24 | 2007-04-24 | Heat medium heater expanding tank nitrogen enveloping pressure regulator |
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| Publication Number | Publication Date |
|---|---|
| CN201032392Y true CN201032392Y (en) | 2008-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201488855U Expired - Lifetime CN201032392Y (en) | 2007-04-24 | 2007-04-24 | Heat medium heater expanding tank nitrogen enveloping pressure regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201032392Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226578A (en) * | 2011-03-24 | 2011-10-26 | 长乐恒申合纤科技有限公司 | Method for controlling pressure of heating medium expansion slot |
| CN102230678A (en) * | 2011-05-04 | 2011-11-02 | 武汉中圣能源环保工程有限公司 | Automatic pressure stabilization device of high-temperature heat collection system |
-
2007
- 2007-04-24 CN CNU2007201488855U patent/CN201032392Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226578A (en) * | 2011-03-24 | 2011-10-26 | 长乐恒申合纤科技有限公司 | Method for controlling pressure of heating medium expansion slot |
| CN102230678A (en) * | 2011-05-04 | 2011-11-02 | 武汉中圣能源环保工程有限公司 | Automatic pressure stabilization device of high-temperature heat collection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080305 |