CN201083321Y

CN201083321Y - High pressure difference pressure regulator

Info

Publication number: CN201083321Y
Application number: CNU2007200810911U
Authority: CN
Inventors: 杨叶
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-14
Filing date: 2007-09-14
Publication date: 2008-07-09
Anticipated expiration: 2017-09-14

Abstract

The utility model discloses a pressure regulator with high pressure difference, which comprises a bottom cover, an upper cover and an adjusting screw which are connected to a valve body. The valve body is provided with a throttle air hole used to communicate the bottom cover and the upper cover and a through hole used to pass through a valve rod, a piston used to adjust a spring support is assembled in the upper cover, a sealing baffle arranged in the bottom cover can automatically adjust the opening degree with the change of the pressure under the interaction of an adjusting spring, the piston and a pre-sealing spring, and dynamically throttle down and make pressure reduction (namely the low-pressure gas with steady pressure can be steadily output by a gas outlet connector). The utility model is characterized in that: a piston structure is adopted to replace the prior 'rubber diaphragm' to be taken as a pressure sensing component, the sealing baffle is provided with a balanced air hole, the pre-sealing spring with lower rigidity can be arranged; the utility model has the remarkable advantages of pressure regulation performance of high pressure difference, high accuracy and high pressure stabilization as well as long service life.

Description

The High Pressure Difference pressure governor

Technical field:

The utility model relates to a kind of barometric control unit, and specifically a kind of High Pressure Difference pressure governor belongs to the transmission ﹠ distribution body of supplying gas is carried out the technical field of Regulation Control.

Background technique:

Along with the fast development of China's oil chemical industry, objectively be China's industrial production and the civilian sufficient combustion gas resource that provides of living.In petrochemical industry, send pipe-line system until gas station from gas production production, storage and the transmission ﹠ distribution at gas well station, in general, all needing pressurized gas with high pressure conditions steadily to be decompressed to the safe air pressure that sets could be for using.Existing gas pressure regulator all is to adopt elastomer diaphragm as the pressure sensitive parts all the time, its working principle is that the source of the gas gatherer is had in the cavity of elastomer diaphragm, change and move up and down by the elastomer diaphragm induction air pressure, thereby the stem movement that promotes to be installed on the elastomer diaphragm pedestal is realized the purpose of throttling pressure regulation.But, this traditional " elastomer diaphragm " structural formula gas pressure regulator exists in actual use regulates that pressure reduction is less, the pressure regulation precision is lower, and the defective that working life is short, this be since material property of elastomer diaphragm own and project organization unreasonable intrinsic technical bug.Chinese patent CN2469283Y just once disclosed a kind of technological scheme of gas pressure regulator, it is made of the valve seat that is connected in valve body, valve gap and the adjusting plug screw and the guard shield that are fitted with adjusting screw rod, its structural feature is that the diaphragm follower of opening spring and being embedded with airtight diaphragm is installed in the valve gap, and Packing spring and the sealed briquette that is embedded with sealing gasket are installed in valve seat.Though the structure of this " by diaphragm follower setting-in elastomer diaphragm " has certain effect to the performance of improving pressure governor, but still can not overcome because the technical bug of rubber diaphragm material performance and project organization unreasonable intrinsic " it is little short with working life to regulate pressure reduction ", and in actual use, because the pressure difference that bear at the sealed briquette two ends in the valve seat is bigger, need the Packing spring of big rigidity could pass sealed briquette, this will have a strong impact on the degree of regulation and the voltage regulation performance of pressure governor again.This is that traditional " elastomer diaphragm " structural formula gas pressure regulator is badly in need of improved problem, this problem also to be solved in the utility model just at present.

The model utility content:

The utility model is the technical bug of existing in order to overcome " elastomer diaphragm " structural formula gas pressure regulator, and has proposed the High Pressure Difference pressure governor of a kind of " piston structure ", and it is to the further improvement of existing pressure governor and perfect.It mainly comprises the valve body that is provided with inlet hole, air outlet hole, the bottom that is connected in valve body, loam cake and adjusting screw rod, in bottom, be fitted with the sealing baffle of pre-sealed spring-loaded, it is characterized in that: on valve body, do throttling pore that is communicated with bottom and loam cake and the through hole that is coated with valve rod, in loam cake, be fitted with the piston of Regulation spring supporting.During pressure regulation work, the operating regulation screw rod is set the force value of required output low-pressure gas, move down and back down sealing baffle by the Regulation spring supporting piston by valve rod, pressurized gas are entered in the bottom by inlet hole, enter loam cake through the throttling pore again and carry out expenditure and pressure, and upwards pass piston, along with moving on the piston, by pre-sealed spring sealing baffle is passed to the equilibrium position of setting the required opening degree of low pressure, when fluctuation appears in bleed pressure, sealing baffle can be followed variation in pressure automatically and dynamically be regulated opening degree and carry out expenditure and pressure, until being in again, sealing baffle sets the new equilibrium position that low pressure needs opening degree, so far, can export low-pressure gas reposefully by air outlet hole, realize High Pressure Difference with steady pressure, the pressure regulation purpose of highi degree of accuracy and high voltage stability performance.

The utility model also has following technical characteristics:

Said sealing baffle is provided with the balance pore, can make the pressure at sealing baffle two ends equal substantially, only need select for use the pre-sealed spring of relatively low stiffness can keep normally carrying out of pressure regulation work easily, can obviously improve the degree of regulation and the voltage regulation performance of pressure governor.

Remarkable advantage of the present utility model is: it adopts piston structure to substitute traditional " elastomer diaphragm " as the pressure sensitive parts, and the balance pore is set at sealing baffle, make the pressure basically identical at sealing baffle two ends, use the pre-sealed spring of relatively low stiffness, adjusting pressure reduction, degree of regulation and the voltage regulation performance of pressure governor can be improved, and the Acceptable life of pressure governor can be prolonged.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A-A view of Fig. 1;

Fig. 3 is the structural representation (amplification) of valve rod of the present utility model and piston action;

Fig. 4 is the structural representation (amplification) of valve rod of the present utility model and sealing baffle effect.

Embodiment:

Provide the embodiment of the High Pressure Difference pressure governor that the utility model proposes below in conjunction with accompanying drawing: it is mainly by being provided with inlet hole 18, the valve body 3 of air outlet hole 16, be connected in the bottom 1 of valve body 3, air input joint 4, air outlet adapter 17, be connected in the loam cake 7 of valve body 3 and be fitted with adjusting screw rod 9 with bolt 6, the end cap 10 of adjusting nut 12 constitutes, in bottom 1, be fitted with pre-sealed spring 2 and the sealing baffle 19 that is provided with balance pore 20, on valve body 3, do throttling pore 15 that is communicated with bottom 1 and loam cake 7 and the through hole 21 that is coated with valve rod 14, valve rod 14 can slide up and down in through hole 21, said air outlet hole 16 is communicated in throttling pore 15, in loam cake 7, be fitted with the piston 5 of Regulation spring 13 supportings, Regulation spring 13 tops are fitted with spring seat 8, and said adjusting screw rod 9 places in the pit on spring seat 8 tops.It is performed such pressure regulation work: take off guard shield 11, operating regulation nut 12 is set the force value of required low-pressure gas, by adjusting screw rod 9 top pressure spring seats 8 compression adjustment springs 13, Regulation spring 13 promotes piston 5 and moves down, piston 5 promotes valve rod 14 and backs down sealing baffle 19, at this moment pressurized gas will be by air input joint 4, inlet hole 18 enters in the bottom 1, enter through throttling pore 15 again and carry out expenditure and pressure in the loam cake 7, upwards pass piston 5 simultaneously, along with moving on the piston 5, pre-sealed spring 2 will be passed the equilibrium position of sealing baffle 19 to the opening degree that sets the force value needs, can pass through throttling pore 15, air outlet hole 16 is again by the air outlet adapter 17 output devices low-pressure gas of setting pressure to some extent.When pressure surge appears in source of the gas or other reason, sealing baffle 19 can be under the interaction of Regulation spring 13, piston 5 and pre-sealed spring 2, change the opening degree of regulating sealing baffle 19 automatically with pressure surge and also dynamically carry out expenditure and pressure, final sealing baffle 19 will be in the equilibrium position of the required opening degree of setting pressure again, so far, can export low-pressure gas reposefully by air outlet adapter 17, realize the pressure regulation work purpose of High Pressure Difference, highi degree of accuracy and high stable performance with steady pressure.When needs quit work, only need unclamp adjusting nut 12, return adjusting screw rod 9, it is firmly airtight with inlet hole 18 that at this moment pre-sealed spring 2 upwards promotes sealing baffle 19, has splendid safety and reliability.

The foregoing description only is to realize one of mode of technical solutions of the utility model; the claimed scope of the utility model is not limited to the foregoing description, also should comprise other mode of execution that can be changed according to the technical solution of the utility model by those of ordinary skill in the art.

Claims

1. High Pressure Difference pressure governor, it mainly comprises the valve body (3) that is provided with inlet hole (18), air outlet hole (16), the bottom (1) that is connected in valve body (3), loam cake (7) and adjusting screw rod (9), in bottom (1), be fitted with the sealing baffle (19) of pre-sealed spring (2) supporting, it is characterized in that: on valve body (3), do the throttling pore (15) of connection bottom (1) and loam cake (7) and be coated with the through hole (21) of valve rod (14), in loam cake (7), be fitted with the piston (5) that Regulation spring (13) supports.

2. High Pressure Difference pressure governor according to claim 1 is characterized in that: said sealing baffle (19) is provided with balance pore (20).