CN210424989U - Novel automatic hydrazine adding device for power station boiler - Google Patents

Abstract

The utility model provides a novel automatic hydrazine that adds of power plant boiler device, including the water tank, oxygen concentration sensor, the oxygen-eliminating device, first connecting plate, U type bracing piece can be observed and deposit the bucket structure, and the sealed lid structure of rotatable packing can be observed and measure a structure, and the connecting pipe, self priming pump, L type passage, flow sensor, control box, singlechip and switch. The utility model is beneficial to observing the amount of hydrazine in the hydrazine storage tank and conveniently carrying out the work of hydrazine filling and conveying by arranging the hydrazine storage tank and the observation piece; the box cover is fixed with the locking rod, the observation cover can be rotated, and the locking plate and the square-head nut are arranged, so that the box cover can be rotated conveniently, and the flushing and cleaning work on the inside of the water tank can be conveniently carried out; the setting of frame and scale mark is observed to second connecting plate, U type is favorable to observing the liquid level of mixing liquid after adding the hydrazine, conveniently observes the liquid level and the output quantity of mixing liquid.

Description

Novel automatic hydrazine adding device for power station boiler

Technical Field

The utility model belongs to the technical field of power plant boiler adds the hydrazine equipment, especially, relate to a novel automatic hydrazine that adds of power plant boiler device.

Background

Ensuring that the quality of boiler feed water and boiler water is qualified is a necessary premise for economic and safe operation of a thermal power generating set, and adding hydrazine is a main means for adjusting the oxygen concentration of feed water.

However, the existing hydrazine adding device for the utility boiler has the problems that hydrazine quantity is inconvenient to observe, cleaning work is inconvenient to carry out and liquid level is inconvenient to observe.

Therefore, the invention of a novel automatic hydrazine adding device for the utility boiler is very necessary.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a novel automatic hydrazine device that adds of power plant boiler to solve current power plant boiler and adding the hydrazine device and still having inconvenient observation hydrazine quantity, the inconvenient problem of clearing up work and inconvenient observation liquid level of going on. A novel automatic hydrazine adding device for a power station boiler comprises a water tank, an oxygen concentration sensor, a deaerator, a first connecting plate, a U-shaped supporting rod, an observable storage barrel structure, a rotatable filling sealing cover structure, an observable measuring frame structure, a connecting pipe, a self-priming pump, an L-shaped guide pipe, a flow sensor, a control box, a single chip microcomputer and a power switch, wherein the oxygen concentration sensor is connected to the lower part of the inner wall of the right side of the water tank through a screw; the deaerator is connected to the upper part of the left side of the water tank through a screw; the left end of the first connecting plate is connected to the lower part of the left side of the water tank through a bolt; the U-shaped supporting rod is welded in the middle of the left side of the upper end of the first connecting plate; the observable storage barrel structure is arranged in the middle of the inside of the upper end of the U-shaped supporting rod; the rotatable filling sealing cover structure is arranged at the upper end of the water tank; the observable measuring frame structure is arranged at the lower part of the right side of the water tank; the connecting pipes are respectively in threaded connection with the upper parts of the left side and the right side of the self-priming pump; the self-priming pump is connected to the middle position of the right side of the upper end of the first connecting plate through a bolt; the upper end of the L-shaped material guide pipe is arranged in the middle of the lower end of the observable storage barrel structure; the right end of the L-shaped material guide pipe is connected with the inner wall of the left end of the connecting pipe arranged on the left side; the flow sensor is connected to the right side of the top end of the inside of the connecting pipe arranged on the right side through a screw; the control box is connected to the upper part of the left side of the water tank through a bolt; the single chip microcomputer is connected to the middle position of the upper part of the front surface of the control box through a screw; the power switch screw is connected to the middle position of the lower part of the front surface of the control box; the observable storage barrel structure comprises a hydrazine storage tank, an observation piece, a sealed storage tank cover, a sealing ring, a connecting rod and a wing nut, wherein the observation piece is embedded in the middle of the front surface of the hydrazine storage tank; the sealing ring is glued at the lower end of the sealed storage tank cover; the lower ends of the connecting rods are respectively welded on the left side and the right side of the upper end of the hydrazine storage tank; the wing nuts are respectively in threaded connection with the upper part of the outer wall of the connecting rod; the upper end of the connecting rod respectively penetrates through the middle positions inside the left side and the right side of the sealed storage tank cover.

Preferably, the rotatable filling sealing cover structure comprises a box cover, a filling pipe, a fixed locking rod, a rotatable observation cover, a locking plate and a square-head nut, wherein the filling pipe is welded in the middle of the inside of the right side of the box cover; the lower end of the fixed locking rod is welded at the right side position in the middle of the upper end of the box cover; the rotatable observation cover hinge is connected to the middle position of the left side of the upper end of the box cover; the left end of the locking plate is welded in the middle of the right side of the rotatable observation cover; the square-head nut is in threaded connection with the upper part of the outer wall of the fixed locking rod.

Preferably, the structure of the observable measuring rack comprises a second connecting plate, a U-shaped observation rack, scale marks, round-head screws, a discharge pipe and a discharge manual valve, wherein the U-shaped observation rack is glued in the middle of the right side of the second connecting plate; the scale lines are drawn on the right side of the front surface of the U-shaped observation frame; the round head screws respectively penetrate through the middle position inside the upper end and the middle position inside the lower end of the second connecting plate; the left end of the discharge pipe penetrates through the lower part of the right side of the U-shaped observation frame; the discharge manual valve is inserted in the middle of the upper end of the discharge pipe in a threaded manner.

Preferably, the sealing ring is a silica gel ring; the observation piece is a transparent toughened glass piece.

Preferably, a manual valve is arranged at the middle position of the left side of the L-shaped material guide pipe.

Preferably, the hydrazine storage tank is bolted to the middle position inside the upper end of the U-shaped support rod.

Preferably, the upper end of the fixed locking rod penetrates through the middle position inside the locking plate; the square-head nut is arranged at the upper end of the locking plate; a silica gel pad is arranged between the rotatable observation cover and the box cover.

Preferably, the tank cover is bolted to the upper end of the water tank; a rubber sealing gasket is arranged between the tank cover and the water tank.

Preferably, the discharge pipe and the U-shaped observation frame are arranged in a gluing way; the U-shaped observation frame adopts a U-shaped toughened glass frame; the second connecting plate is a stainless steel plate with a through hole formed inside.

Preferably, the round head screws are respectively in threaded connection with the lower part of the right side of the water tank; and a rubber sealing gasket is arranged between the second connecting plate and the water tank.

Preferably, the oxygen concentration sensor is a concentration sensor with a model number of 4 OXV; the deaerator is specifically an SZR-RS1000 deaerator; the self-priming pump is a self-priming centrifugal clean water pump with the model number of 2 ZDK-20; the flow sensor is a liquid flowmeter with model number LWGY-4A; the singlechip is specifically a singlechip with the model number of STC89C52RC 40C-PDIP; the power switch is a button switch with the model number of LC 3-10.

Preferably, the oxygen concentration sensor is electrically connected with the single chip microcomputer.

Preferably, the deaerator is electrically connected with the single chip microcomputer.

Preferably, the self-priming pump is electrically connected with the single chip microcomputer.

Preferably, the flow sensor is electrically connected with the single chip microcomputer.

Preferably, the power switch is electrically connected with the single chip microcomputer.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses in, the setting of hydrazine holding vessel and observation piece, be favorable to observing the quantity of the inside hydrazine of hydrazine holding vessel, conveniently carry out the hydrazine filling and carry work.

2. The utility model discloses in, case lid, fixed check lock lever, rotatable observation lid, the setting of locking plate and square head nut is favorable to rotating the case lid, the convenient inside to the water tank washes the clearance work.

3. The utility model discloses in, the setting of frame and scale mark is observed to the second connecting plate, U type, is favorable to observing the liquid level of mixing liquid after adding the hydrazine, conveniently observes liquid level and the output quantity of mixing liquid.

4. The utility model discloses in, the setting of case lid and filling pipe, be favorable to pouring into appropriate clear water into to the inside of water tank, conveniently carry out hydrazine mixing work.

5. The utility model discloses in, the hydrazine holding vessel, the setting of sealed storage tank lid and sealing washer is favorable to the junction of sealed hydrazine holding vessel and sealed storage tank lid to prevent that the dust in the air from getting into the inside of hydrazine holding vessel.

6. The utility model discloses in, the setting of second connecting plate and button head screw, be favorable to the installation and dismantle the U type and observe the frame, conveniently carry out the U type and observe a clearance work.

7. The utility model discloses in, case lid, fixed locking rod, the setting of locking board and square head nut is favorable to fixed and the rotatable observation lid of locking, conveniently clears up the work.

8. The utility model discloses in, hydrazine holding vessel, the setting of connecting rod and wing nut is favorable to the installation and dismantles sealed storage tank cover, conveniently carries out hydrazine filling work.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the storage barrel structure.

Fig. 3 is a schematic structural view of the rotatable filling sealing cap structure of the present invention.

Fig. 4 is a schematic structural view of the observable measuring rack structure of the present invention.

Fig. 5 is a schematic diagram of the electrical connection of the present invention.

In the figure:

1. a water tank; 2. an oxygen concentration sensor; 3. a deaerator; 4. a first connecting plate; 5. a U-shaped support rod; 6. the structure of the storage barrel can be observed; 61. a hydrazine storage tank; 62. an observation sheet; 63. sealing the storage tank cover; 64. a seal ring; 65. a connecting rod; 66. wing nuts; 7. a rotatable filling seal cap structure; 71. a box cover; 72. a filling pipe; 73. fixing the locking rod; 74. a rotatable viewing cover; 75. a locking plate; 76. a square head nut; 8. the structure of the measuring frame can be observed; 81. a second connecting plate; 82. a U-shaped observation frame; 83. scale lines; 84. a round head screw; 85. a discharge pipe; 86. a discharge manual valve; 9. a connecting pipe; 10. a self-priming pump; 11. an L-shaped material guide pipe; 12. a flow sensor; 13. a control box; 14. a single chip microcomputer; 15. and a power switch.

Detailed Description

The utility model is described in detail with reference to the accompanying drawings, as shown in fig. 1 and fig. 2, a novel automatic hydrazine adding device for a power station boiler comprises a water tank 1, an oxygen concentration sensor 2, a deaerator 3, a first connecting plate 4, a U-shaped supporting rod 5, an observable storage barrel structure 6, a rotatable filling sealing cover structure 7, an observable measuring frame structure 8, a connecting pipe 9, a self-priming pump 10, an L-shaped guide pipe 11, a flow sensor 12, a control box 13, a single chip microcomputer 14 and a power switch 15, wherein the oxygen concentration sensor 2 is screwed on the lower part of the inner wall of the right side of the water tank 1; the deaerator 3 is connected to the upper part of the left side of the water tank 1 through a screw; the left end of the first connecting plate 4 is connected to the lower part of the left side of the water tank 1 through a bolt; the U-shaped supporting rod 5 is welded in the middle of the left side of the upper end of the first connecting plate 4; the observable storage barrel structure 6 is arranged in the middle of the inside of the upper end of the U-shaped support rod 5; the rotatable filling sealing cover structure 7 is arranged at the upper end of the water tank 1; the observable measuring frame structure 8 is arranged at the lower part of the right side of the water tank 1; the connecting pipes 9 are respectively in threaded connection with the upper parts of the left side and the right side of the self-priming pump 10; the self-priming pump 10 is connected to the middle position of the right side of the upper end of the first connecting plate 4 through a bolt; the upper end of the L-shaped material guiding pipe 11 is arranged in the middle of the lower end of the observable storage barrel structure 6; the right end of the L-shaped material guide pipe 11 is connected with the inner wall of the left end of the connecting pipe 9 arranged on the left side; the flow sensor 12 is in screw connection with the right side of the top end inside the connecting pipe 9 arranged on the right side; the control box 13 is connected to the upper part of the left side of the water tank 1 through a bolt; the single chip microcomputer 14 is in screw connection with the middle position of the upper part of the front surface of the control box 13; the power switch 15 is screwed in the middle of the lower part of the front surface of the control box 13; the observable storage barrel structure 6 comprises a hydrazine storage tank 61, an observation sheet 62, a sealed storage tank cover 63, a sealing ring 64, a connecting rod 65 and a wing nut 66, wherein the observation sheet 62 is embedded in the middle of the front surface of the hydrazine storage tank 61; the sealing ring 64 is glued to the lower end of the sealed storage tank cover 63; the lower ends of the connecting rods 65 are respectively welded on the left side and the right side of the upper end of the hydrazine storage tank 61; the wing nuts 66 are respectively in threaded connection with the upper parts of the outer walls of the connecting rods 65; the upper end of the connecting rod 65 respectively penetrates through the middle positions of the inner parts of the left side and the right side of the sealed storage tank cover 63; during the use, the wing nut 66 is rotated in the reverse direction, sealed storage tank cover 63 is opened, appropriate amount of hydrazine is injected into the inside of hydrazine storage tank 61, the amount of the inside of hydrazine storage tank 61 is observed through observing piece 62, after appropriate amount of hydrazine is added, sealed storage tank cover 63 is covered on the upper end of hydrazine storage tank 61, wing nut 66 is screwed up to fix sealed storage tank cover 63, and hydrazine liquid level observation work is conveniently carried out.

In this embodiment, referring to fig. 3, the rotatable filling sealing cover structure 7 includes a cover 71, a filling pipe 72, a fixed locking rod 73, a rotatable viewing cover 74, a locking plate 75 and a square nut 76, wherein the filling pipe 72 is welded at the middle position inside the right side of the cover 71; the lower end of the fixed locking rod 73 is welded at the right side position in the middle of the upper end of the box cover 71; the rotatable observation cover 74 is hinged at the middle position of the left side of the upper end of the box cover 71; the left end of the locking plate 75 is welded at the middle position of the right side of the rotatable observation cover 74; the square-head nut 76 is in threaded connection with the upper part of the outer wall of the fixed locking rod 73; the sealed cap that sets up on the upper end of filling pipe 72 is dismantled, appropriate amount of clear water is filled to the inside water tank 1 through filling pipe 72, then the sealed cap that sets up on filling pipe 72 is screwed up, prevent that impurity in the air from getting into the inside of water tank 1 through filling pipe 72, turn on switch 15 and control oxygen-eliminating device 3 through singlechip 14 and begin work, get rid of the oxygen of aquatic, detect the oxygen concentration of aquatic simultaneously through oxygen concentration sensor 2, reach the standard after, control self priming pump 10 through singlechip 14 and begin work, pour into the inside of water tank 1 with the inside hydrazine of depositing of hydrazine holding vessel 61, detect the injection volume of hydrazine through flow sensor 12, pour into appropriate amount into the back, control self priming pump 10 stop work through singlechip 14, conveniently carry out the automatic filling work of hydrazine.

In this embodiment, referring to fig. 4, the observable measuring rack structure 8 includes a second connecting plate 81, a U-shaped observing rack 82, a scale mark 83, a round head screw 84, a discharging pipe 85 and a discharging manual valve 86, wherein the U-shaped observing rack 82 is glued to the middle position of the right side of the second connecting plate 81; the scale mark 83 is carved on the right side of the front surface of the U-shaped observation frame 82; the round head screws 84 respectively penetrate through the middle position inside the upper end and the middle position inside the lower end of the second connecting plate 81; the left end of the discharge pipe 85 penetrates through the lower part of the right side of the U-shaped observation frame 82; the discharge manual valve 86 is inserted in the middle of the upper end of the discharge pipe 85 in a threaded manner; after the hydrazine is injected, after a certain period of time, the discharge manual valve 86 is opened to inject the mixed liquid in the water tank 1 into the proper equipment through the discharge pipe 85, the output quantity of the mixed liquid is observed through the U-shaped observation frame 82 and the scale mark 83 in the discharge process, the discharge quantity of the mixed liquid is conveniently controlled, and the quantity of the mixed liquid is conveniently observed.

In this embodiment, specifically, the sealing ring 64 is a silica gel ring; the observation sheet 62 is made of transparent tempered glass.

In this embodiment, a manual valve is disposed at a middle position on the left side of the L-shaped material guiding pipe 11.

In this embodiment, specifically, the hydrazine storage tank 61 is bolted to the middle inside the upper end of the U-shaped support rod 5.

In this embodiment, specifically, the upper end of the fixed locking rod 73 penetrates through the middle position inside the locking plate 75; the square-head nut 76 is arranged at the upper end of the locking plate 75; a silicone pad is arranged between the rotatable observation cover 74 and the box cover 71.

In this embodiment, specifically, the tank cover 71 is bolted to the upper end of the water tank 1; a rubber gasket is arranged between the tank cover 71 and the water tank 1.

In this embodiment, specifically, the discharge pipe 85 and the U-shaped observation frame 82 are arranged by gluing; the U-shaped observation frame 82 adopts a U-shaped toughened glass frame; the second connecting plate 81 is a stainless steel plate with a through hole therein.

In this embodiment, specifically, the round head screws 84 are respectively screwed on the lower part of the right side of the water tank 1; and a rubber sealing gasket is arranged between the second connecting plate 81 and the water tank 1.

In this embodiment, specifically, the oxygen concentration sensor 2 specifically adopts a concentration sensor with a model number of 4 OXV; the deaerator 3 is a deaerator with the model number of SZR-RS 1000; the self-priming pump 10 is a self-priming centrifugal clean water pump with the model number of 2 ZDK-20; the flow sensor 12 is a liquid flowmeter with model LWGY-4A; the single-chip microcomputer 14 is a single-chip microcomputer with the model number of STC89C52RC 40C-PDIP; the power switch 15 is a button switch with model number LC 3-10.

In this embodiment, specifically, the oxygen concentration sensor 2 is electrically connected to the single chip microcomputer 14.

In this embodiment, specifically, the deaerator 3 is electrically connected to the single chip microcomputer 14.

In this embodiment, specifically, the self-priming pump 10 is electrically connected to the single chip microcomputer 14.

In this embodiment, specifically, the flow sensor 12 is electrically connected to the single chip microcomputer 14.

In this embodiment, specifically, the power switch 15 is electrically connected to the single chip 14.

Principle of operation

In the utility model, when in use, the wing nut 66 is rotated reversely, the sealed storage tank cover 63 is opened, a proper amount of hydrazine is injected into the hydrazine storage tank 61, the amount of the hydrazine in the hydrazine storage tank 61 is observed through the observation sheet 62, after a proper amount of hydrazine is added, the sealed storage tank cover 63 is covered on the upper end of the hydrazine storage tank 61, the wing nut 66 is screwed down to fix the sealed storage tank cover 63, the observation of the liquid level of the hydrazine is facilitated, the sealing cap arranged at the upper end of the filling pipe 72 is detached, a proper amount of clear water is injected into the water tank 1 through the filling pipe 72, then the sealing cap arranged at the upper end of the filling pipe 72 is screwed down, impurities in the air are prevented from entering the water tank 1 through the filling pipe 72, the power switch 15 is opened to control the deaerator 3 to work through the singlechip 14, oxygen in the water is removed, the oxygen concentration in the water is detected through the oxygen concentration sensor 2, after reaching the standard, control self priming pump 10 through singlechip 14 and begin work, pour into the inside of water tank 1 with the inside hydrazine of depositing of hydrazine holding vessel 61, detect the injection volume of hydrazine through flow sensor 12, pour into after the right amount, control self priming pump 10 stop work through singlechip 14, conveniently carry out the automatic work of annotating of hydrazine, after the hydrazine of filling, after the definite time, open and arrange material manual valve 86 and pour into suitable equipment through the mixed liquid of 1 inside of delivery pipe with water tank through discharge pipe 85 inside, observe the output quantity of mixed liquid through U type observation frame 82 and scale mark 83 at the in-process that discharges, the discharge of the mixed liquid of convenient control, conveniently observe the quantity of mixed liquid simultaneously.

Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.

Claims (10)

1. The novel automatic hydrazine adding device for the power station boiler is characterized by comprising a water tank (1), an oxygen concentration sensor (2), a deaerator (3), a first connecting plate (4), a U-shaped supporting rod (5), an observable storage barrel structure (6), a rotatable filling sealing cover structure (7), an observable measuring frame structure (8), a connecting pipe (9), a self-priming pump (10), an L-shaped guide pipe (11), a flow sensor (12), a control box (13), a single chip microcomputer (14) and a power switch (15), wherein the oxygen concentration sensor (2) is connected to the lower part of the inner wall of the right side of the water tank (1) through screws; the deaerator (3) is connected to the upper part of the left side of the water tank (1) through screws; the left end of the first connecting plate (4) is connected to the lower part of the left side of the water tank (1) through a bolt; the U-shaped supporting rod (5) is welded in the middle of the left side of the upper end of the first connecting plate (4); the observable storage barrel structure (6) is arranged in the middle of the inside of the upper end of the U-shaped support rod (5); the rotatable filling sealing cover structure (7) is arranged at the upper end of the water tank (1); the observable measuring frame structure (8) is arranged at the lower part of the right side of the water tank (1); the connecting pipes (9) are respectively in threaded connection with the upper parts of the left side and the right side of the self-priming pump (10); the self-priming pump (10) is connected to the middle position of the right side of the upper end of the first connecting plate (4) through a bolt; the upper end of the L-shaped material guiding pipe (11) is arranged in the middle of the lower end of the observable storage barrel structure (6); the right end of the L-shaped material guide pipe (11) is connected with the inner wall of the left end of the connecting pipe (9) arranged on the left side; the flow sensor (12) is connected to the right side of the top end of the inside of the connecting pipe (9) arranged on the right side through a screw; the control box (13) is connected to the upper part of the left side of the water tank (1) through a bolt; the single chip microcomputer (14) is in screw connection with the middle position of the upper part of the front surface of the control box (13); the power switch (15) is connected to the middle position of the lower part of the front surface of the control box (13) through a screw; the observable storage barrel structure (6) comprises a hydrazine storage tank (61), an observation sheet (62), a sealed storage tank cover (63), a sealing ring (64), a connecting rod (65) and a wing nut (66), wherein the observation sheet (62) is embedded in the middle of the front surface of the hydrazine storage tank (61); the sealing ring (64) is glued to the lower end of the sealed storage tank cover (63); the lower ends of the connecting rods (65) are respectively welded on the left side and the right side of the upper end of the hydrazine storage tank (61); the wing nuts (66) are respectively in threaded connection with the upper part of the outer wall of the connecting rod (65); the upper end of the connecting rod (65) penetrates through the middle positions of the inner parts of the left side and the right side of the sealed storage tank cover (63) respectively.

2. The new automatic hydrazine adding device for the utility boiler according to the claim 1, characterized in that the rotatable filling sealing cover structure (7) comprises a cover (71), a filling pipe (72), a fixed locking rod (73), a rotatable observation cover (74), a locking plate (75) and a square nut (76), the filling pipe (72) is welded at the middle position inside the right side of the cover (71); the lower end of the fixed locking rod (73) is welded at the right side position of the middle of the upper end of the box cover (71); the rotatable observation cover (74) is hinged to the middle position of the left side of the upper end of the box cover (71); the left end of the locking plate (75) is welded at the middle position of the right side of the rotatable observation cover (74); the square-head nut (76) is in threaded connection with the upper part of the outer wall of the fixed locking rod (73).

3. The new automatic hydrazine adding device for the utility boiler according to claim 1, characterized in that the observable measuring frame structure (8) comprises a second connecting plate (81), a U-shaped observing frame (82), a scale mark (83), a round head screw (84), a discharge pipe (85) and a discharge manual valve (86), wherein the U-shaped observing frame (82) is glued at the right middle position of the second connecting plate (81); the scale mark (83) is carved on the right side of the front surface of the U-shaped observation frame (82); the round head screws (84) respectively penetrate through the middle position inside the upper end and the middle position inside the lower end of the second connecting plate (81); the left end of the discharge pipe (85) penetrates through the lower part of the right side of the U-shaped observation frame (82); the discharge manual valve (86) is inserted in the middle of the upper end of the discharge pipe (85) in a threaded manner.

4. The new automatic hydrazine adding device for the utility boiler as defined in claim 1, characterized in that the sealing ring (64) is a silica gel ring; the observation sheet (62) is a transparent toughened glass sheet.

5. The new automatic hydrazine adding device for the utility boiler as claimed in claim 1, characterized in that a manual valve is arranged at the middle position of the left side of the L-shaped material guiding pipe (11).

6. The new automatic hydrazine feeding device for utility boilers as claimed in claim 1, characterized in that the hydrazine storage tank (61) is bolted to the middle inside the upper end of the U-shaped support bar (5).

7. The new automatic hydrazine adding device for utility boilers as claimed in claim 2, characterized in that the upper end of the fixed locking bar (73) penetrates the inner middle position of the locking plate (75); the square-head nut (76) is arranged at the upper end of the locking plate (75); and a silica gel pad is arranged between the rotatable observation cover (74) and the box cover (71).

8. A new automatic hydrazine adding device for utility boilers, according to claim 2, characterized in that the tank cover (71) is bolted to the upper end of the water tank (1); a rubber sealing gasket is arranged between the tank cover (71) and the water tank (1).

9. A new automatic hydrazine adding device for utility boilers, according to the claim 3, characterized by the fact that the said discharge pipe (85) is glued to the U-shaped observation frame (82); the U-shaped observation frame (82) adopts a U-shaped toughened glass frame; the second connecting plate (81) is a stainless steel plate with a through hole formed inside.

10. The new automatic hydrazine adding device for utility boilers as claimed in claim 3, characterized in that said round head screws (84) are respectively screwed on the lower right side of the water tank (1); and a rubber sealing gasket is arranged between the second connecting plate (81) and the water tank (1).

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