CN201107670Y

CN201107670Y - Accurate liquid voltage-stabilizing apparatus

Info

Publication number: CN201107670Y
Application number: CNU2007200886766U
Authority: CN
Inventors: 黎艺文; 黎贤杰; 邓宇; 方进福
Original assignee: LIUZHOU GUOJI INDUSTRIAL Co Ltd
Current assignee: Liuzhou Yuanchuang EFI Technology Co., Ltd.
Priority date: 2007-11-30
Filing date: 2007-11-30
Publication date: 2008-08-27
Anticipated expiration: 2017-11-30

Abstract

The utility model provides a sophisticated liquid pressure stabilizer and relates to a fluid pressure stabilizer that comprises a steady pressure tank, a liquid storage tank, a water pump that is arranged in the liquid storage tank and an oil pipe. An exhaust valve and a liquid inlet are arranged above the steady pressure tank; the side wall of the steady pressure tank is provided with a liquid discharge valve; the oil pipe is connected with the output end of the water pump and the liquid inlet of the steady pressure tank; the side wall of the steady pressure tank is also provided with a digital pressure transmitter; the top part of the liquid storage tank is connected with a control box; a single-chip and a power supply thereof are arranged in the control box; the input end of the single-chip is connected with the output end of the digital pressure transmitter; the output end of the single-chip is connected with the input end of the water pump; the steady pressure tank consists of a steady pressure tank A and a steady pressure tank B, which are integrated with each other; an isolation device is arranged between the steady pressure tank A and the steady pressure tank B and is used for dividing the inner cavity of the steady pressure tank into a liquid storage chamber and a gas storage chamber; the isolation device consists of an isolation membrane and a support frame. The fluid pressure stabilizer has the advantages of small size, high precision, simple control and low production costs; and the fluid pressure stabilizer can result in the absolute isolation of liquid and gas and avoid the mutual dissolution of liquid and gas.

Description

The liquid precision stable-pressure device

Technical field:

The utility model relates to a kind of stable-pressure device of fluid, particularly a kind of liquid precision stable-pressure device.

Background technology:

In industrial circle, to carry out voltage stabilizing to the medium in the pressure vessel usually, to the stable high-precision requirement of output pressure, and liquid pressure stabilizer is a kind of a kind of device that medium in the pressure vessel is carried out voltage stabilizing when satisfying equipment work.Existing liquid pressure stabilizer, as the patent No. 02112199.0 disclosed a kind of liquid pressure stabilizer, though this device can provide metastable output pressure, but its overall volume is bigger, precision is lower, and used computing machine, PLC, variable-frequency motor etc. to control, and the control structure more complicated, cost is higher relatively; The liquids and gases that are positioned at pressurizing vessel are not in addition isolated, the phenomenon that liquids and gases are dissolved each other.

The utility model content:

The technical problems to be solved in the utility model is: a kind of liquid precision stable-pressure device is provided, with satisfy to produce and test in to the requirement of miniaturization, high-precision liquid stabilising pressure apparatus, the control structure of this device is fairly simple, cost is also lower.

The technical scheme that solves the problems of the technologies described above is: a kind of liquid precision stable-pressure device, comprise buffer tank, liquid reserve tank, be positioned at the water pump of liquid reserve tank, oil pipe, the top of buffer tank is provided with vent valve and inlet, sidewall is provided with liquid valve, oil pipe connects the output terminal of water pump and the inlet of buffer tank, the sidewall of described buffer tank also is equipped with a Digital Pressure Transducer, the top of liquid reserve tank is connected with control box, be provided with single-chip microcomputer and power supply thereof in the controller, the input end of this single-chip microcomputer is connected with the output terminal of Digital Pressure Transducer, and the output terminal of single-chip microcomputer is connected with the input end of water pump.

Further technical scheme of the present utility model is: described buffer tank flexibly connects into an integral body by the buffer tank A that is positioned at the below with the buffer tank B that is positioned at the top, a spacer assembly also is installed between buffer tank A and buffer tank B, and this spacer assembly is divided into fluid reservoir and air storage chamber two parts with the inner chamber of whole buffer tank.

Another technical scheme of the present utility model is: described spacer assembly is made up of barrier film and two bracing frames laying respectively at the barrier film upper and lower, wherein all correspondingly on two bracing frames has a plurality of bleeder vents.

Because adopt said structure, the liquid precision stable-pressure device of the utility model is compared with existing liquid pressure stabilizer, has following beneficial effect:

1, volume is little, and production cost is low:

Because the liquid precision stable-pressure device of the utility model only needs a slice single-chip microcomputer can finish the control of total system, small-sized control box can be connected the liquid reserve tank top, and buffer tank has made full use of pressurized air, do not need large-scale gas tank to come steady pressure, therefore its structure is compact, the volume of product is less, and production cost is also lower.

2, precision height, control is simple:

Because the utility model utilizes compressed-air actuated buffer action to absorb the pulse of water pump, and utilize the single chip circuit in the control box to read the digital pressure signal that Digital Pressure Transducer is sent back to, oil pump is accurately controlled, and to the accurate liquid make-up of buffer tank, thereby keep the constant of output liquid pressure, so its precision is higher; And its control structure is also fairly simple, only uses a slice single-chip microcomputer can finish control.

3, liquids and gases are definitely isolated, and prevent that liquids and gases from dissolving each other:

Owing between the fluid reservoir of buffer tank of the present utility model and the air storage chamber spacer assembly is installed also, and between spacer assembly and buffer tank A, buffer tank B, be equipped with packing washer, the liquid that is positioned at fluid reservoir and the gas of air storage chamber are definitely isolated, prevent the phenomenon that liquids and gases dissolve each other.

4, structural design is more reasonable:

Because spacer assembly of the present utility model is made up of barrier film and the bracing frame that lays respectively at the barrier film upper and lower, wherein bracing frame is the stroke that is used to limit barrier film, protect barrier film can not crushed by gravity or use in stroke is excessive is burst; Barrier film is used for complete fluid partitioning and gas, guarantees that liquids and gases are contactless; Therefore its structural design is very reasonable.

Below, the technical characterictic to the liquid precision stable-pressure device of the utility model is further described in conjunction with the accompanying drawings and embodiments.

Description of drawings:

The structural representation of the liquid precision stable-pressure device of Fig. 1～Fig. 2: embodiment one described the utility model,

The A-A cut-open view of Fig. 1: Fig. 2, Fig. 2: the main cut-open view of looking;

The structural representation of the liquid precision stable-pressure device of Fig. 3～Fig. 6: embodiment two described the utility model,

The B-B cut-open view of Fig. 3: Fig. 4, Fig. 4: the main cut-open view of looking,

The C of Fig. 5: Fig. 4 is to view, the D portion enlarged drawing of Fig. 6: Fig. 4;

Among the figure:

The 1-buffer tank, 11-buffer tank A, the 111-gas filling valve, the 12-spacer assembly,

The 121-barrier film, the 122-bracing frame, the 123-bracing frame, the 124-bleeder vent,

13-buffer tank B, the 131-vent valve, the 132-inlet, the 133-liquid valve,

The 14-fluid reservoir, the 15-air storage chamber, the 16-packing washer, the 2-retaining valve,

The 3-oil pipe, the 4-control box, the 41-power supply, the 42-single-chip microcomputer,

The 5-liquid reserve tank, the 6-liquid level tube, the 7-oil pump, the input end of 71-oil pump,

The output terminal of 72-oil pump, 8-liquid medium, 9-Digital Pressure Transducer.

Embodiment:

Embodiment one:

A kind of liquid precision stable-pressure device is (referring to Fig. 1～Fig. 2), comprise buffer tank 1, liquid reserve tank 5, be positioned at the water pump 7 of liquid reserve tank 5, oil pipe 3, the top of buffer tank 1 is provided with vent valve 131 and inlet 132, sidewall is provided with liquid valve 133, oil pipe 3 connects the output terminal 72 of water pump 7 and the inlet 132 of buffer tank 1, the sidewall of described buffer tank 1 also is equipped with a Digital Pressure Transducer 9, the top of liquid reserve tank 5 is connected with control box 4, be provided with single-chip microcomputer 42 and power supply 41 thereof in the controller 4, the input end of this single-chip microcomputer 42 is connected with the output terminal of Digital Pressure Transducer 9, and the output terminal of single-chip microcomputer is connected with the input end 71 of water pump 7.

Wherein, buffer tank exhausr port 131 is used for the air in the emptying buffer tank when packing liquid into, and inlet 132 is used for replenishing the liquid in the buffer tank 1, and liquid valve 133 is used to export the liquid after the voltage stabilizing; Digital Pressure Transducer 9 is used to measure the fluid pressure in the buffer tank, and passes pressure back control box 4 with digital form, and liquid reserve tank 5 is used for storage and is housed to liquid medium 8; Water pump 7 is responsible for to buffer tank 1 liquid make-up by control box 4 controls.

Described buffer tank 1 is the buffer tank structure of known band pressure gas, repeats no more here.

On above-mentioned buffer tank inlet 132 and the oil pipe 3 between the control box 4 retaining valve 2 is installed also, this retaining valve 2 is used to prevent that the highly pressurised liquid in the buffer tank 1 from flowing backwards; Described liquid reserve tank 5 sidewalls also are equipped with liquid level tube 6, and this liquid level tube 6 is used to observe the liquid level in the liquid reserve tank 5.

Embodiment two:

A kind of liquid precision stable-pressure device is (referring to Fig. 3～Fig. 6), its basic structure is with embodiment one, institute's difference is: described buffer tank flexibly connects into an integral body with the buffer tank B13 that is positioned at the top by bolt by the buffer tank A11 that is positioned at the below, a spacer assembly 12 also is installed between buffer tank A11 and buffer tank B13, and this spacer assembly 12 is divided into

fluid reservoir

14 and 15 liang of parts of air storage chamber with the inner chamber of whole buffer tank; Between described buffer tank A11 and the spacer assembly 12, be equipped with packing washer 16 between buffer tank B13 and the spacer assembly 12.

Above-mentioned spacer assembly 12 is made up of barrier film 121 and the bracing frame 122, the bracing frame 123 that lay respectively at barrier film 121 upper and lowers, wherein all correspondingly on bracing frame 122 and the bracing frame 123 has a plurality of bleeder vents 124.

The course of work is as follows for the first time for the liquid precision stable-pressure device of the utility model: open 131 two valves of gas filling valve 111 and vent valve, close liquid valve 133, open oil pump 7 liquid make-up in the fluid reservoir of buffer tank B13, air in emptying buffer tank B13, liquid flow out from vent valve 131, and till not having bubble to flow out; Close vent valve 131, gas filling valve 111 is connected source of the gas, the air storage chamber in buffer tank A11 replenishes gases at high pressure, observes the pressure that Digital Pressure Transducer 9 shows, reaches the setting requirement up to pressure.

Claims

1. liquid precision stable-pressure device, comprise buffer tank (1), liquid reserve tank (5), be positioned at the water pump (7) of liquid reserve tank (5), oil pipe (3), the top of buffer tank (1) is provided with vent valve (131) and inlet (132), sidewall is provided with liquid valve (133), oil pipe (3) connects the output terminal (72) of water pump (7) and the inlet (132) of buffer tank (1), it is characterized in that: the sidewall of described buffer tank (1) also is equipped with a Digital Pressure Transducer (9), the top of liquid reserve tank (5) is connected with control box (4), be provided with single-chip microcomputer (42) and power supply (41) thereof in the controller (4), the input end of this single-chip microcomputer (42) is connected with the output terminal of Digital Pressure Transducer (9), and the output terminal of single-chip microcomputer is connected with the input end (71) of water pump (7).

2. liquid precision stable-pressure device according to claim 1, it is characterized in that: described buffer tank (1) flexibly connects into an integral body by the buffer tank A (11) that is positioned at the below with the buffer tank B (13) that is positioned at the top, be positioned between buffer tank A (11) and the buffer tank B (13) spacer assembly (12) also is installed, this spacer assembly (12) is divided into fluid reservoir (14) and air storage chamber (15) two partly with the inner chamber of whole buffer tank.

3. liquid precision stable-pressure device according to claim 2, it is characterized in that: described spacer assembly (12) is made up of barrier film (121) and the bracing frame (122), the bracing frame (123) that lay respectively at barrier film (121) upper and lower, wherein all corresponding a plurality of bleeder vents (124) that have on bracing frame (122) and the bracing frame (123).

4. according to claim 2 or 3 described liquid precision stable-pressure devices, it is characterized in that: between described buffer tank A (11) and the spacer assembly (12), be equipped with packing washer (16) between buffer tank B (13) and the spacer assembly (12).

5. according to claim 1 or 2 or 3 described liquid precision stable-pressure devices, it is characterized in that: on the oil pipe between described buffer tank feed liquor (132) and the control box (4) retaining valve (2) is installed.

6. liquid precision stable-pressure device according to claim 4 is characterized in that: on the oil pipe between described buffer tank inlet (132) and the control box (4) retaining valve (2) is installed.