CN2107583U - Self-power type pressure regulating valve - Google Patents

Abstract

The utility model relates to a self-power type pressure regulating valve which utilizes the self pressure of fluid in a pipeline to regulate and control the fluid pressure. The self-power type pressure regulating valve is composed of a main valve, a film chamber, an auxiliary valve and a regulating mechanism, characterized in that a film chamber structure is adopted to substitute the existing piston valve stem structure so as to avoid the blocking phenomenon by dirt. The main valve is installed upside down to ensure that the film chamber is below the main valve, while main films and pressure films receive the action of fluids from bottom to top. The utility model, therefore, weakens the high temperature ageing effect of the films, effectively improves the operational reliability, and prolong the service life, suitable for industries such as petrifaction, metallurgy, light industry, textile, marine vessel, etc.

Description

Self-power type pressure regulating valve

The self-powering type pressure regulator.

The utility model relates to a kind of pressure that utilizes pipeline liquid self, to the instrument that the pressure of liquid is regulated and controlled, and particularly a kind of self-powering type pressure regulator.

Existing convection cell pipeline carries out the Piston reducing valve that pressure is regulated and controlled, and directaction pressure controller has all adopted piston valve spindle in its structure.The actual use and the data of accumulation shows that the piston valve spindle of the pressure regulator of this structure is stuck in guide sleeve by the dirt in the pipeline fluid medium easily, thus have a strong impact on using effect and shortened working life.In addition, the impression face of impression in the adjusting commanding agency of direct-type pressure regulator unit body---pressure membrane is that pressure membrane is easy to be subjected to high temperature action and ageing failure in the use from top to bottom by the effect of high temperature fluid medium.Obviously, design a kind of controlling mechanism and avoid piston valve spindle like that easy to be stuck, and pressure membrane is not subject to high temperature and the self-powering type pressure regulator of ageing failure is very for necessary.

The purpose of this utility model provides the self-powering type pressure regulator of a kind of functional reliability and automatic adjusting of all improving a lot working life and controlling plumbing fixtures hydrodynamic pressure.

The technical solution of the utility model is, a kind of by main valve body, main valve plug, the main valve that main valve spring constitutes, auxiliary valve body, auxiliary valve core, the secondary valve that secondary valve spring constitutes, the controlling mechanism body, pressure membrane, regulate spring, adjusting screw, return the self-powering type pressure regulator of the controlling mechanism composition of feedback interface tube formation, feature of the present utility model is that the bottom of main valve body is linked with film chamber body, be fixed with main film in the body of film chamber, be fixed in the lower end of main valve plug above the impression face of main film and match with the main valve spring that is linked in main valve plug upper end, membrane type body upper shed under the impression face of main film is connected with surge pipe, and the other end opening of surge pipe is connected on the auxiliary valve body, the lower cavity of main film is communicated with secondary valve pocket in the auxiliary valve body; Auxiliary valve body also opening is connected with relief tube, the other end opening of relief tube is connected on the main valve body, the secondary valve pocket in the auxiliary valve body is communicated with main valve Lower Half cavity in the main valve body, and the lower end core print of auxiliary valve core opens and closes in the main valve first half cavity in main valve body versatilely, auxiliary valve core has near design between lower half portion core bar of lower end core print and the guide sleeve and closely cooperates between gap that main valve chamber is communicated with secondary valve pocket, auxiliary valve core upper half part core bar and the guide sleeve and the upper end portion cooperation that contacts with pressure membrane in being fixed in the controlling mechanism intracoelomic cavity; Design has and needs to regulate and the pipeline fluid of control communicates returns the feedback interface tube on the controlling mechanism intracoelomic cavity body of pressure membrane impression face below, and the top cooperation of pressure membrane impression face is linked with the adjusting spring, and adjusting spring top is linked with adjusting screw.

After the self-powering type pressure regulator that the utility model implements to obtain is installed in the quantity-produced pipe-line system, it is downward that the rotation adjusting screw makes adjusting spring pressing pressure membrane during use, force auxiliary valve core to move down by contact matching, auxiliary valve core lower end core print is opened, the high temperature fluid that flows into main valve inner chamber top from upper flow section enters secondary valve insertion through auxiliary valve core lower half portion core bar gap, part fluid flows to main valve Lower Half inner chamber to dirty section through relief tube, and another part fluid enters the film chamber intracoelomic cavity of main film below through surge pipe.When secondary valve insertion pressure increases, the pressure of film chamber, main film below intracoelomic cavity also increases thereupon, the main valve plug that is connecting above the main film is pushed up to be moved, head on main valve spring and open main valve, fluid flows to dirty section through main valve by upper flow section, dirty section pressure increases gradually, dirty section pressure is by returning the pressure membrane below inner chamber that the feedback pipe passes to controlling mechanism, pressure membrane is headed on the pressure that is linked in top adjusting spring and epirelief, with the auxiliary valve core of pressure membrane contact matching be subjected to secondary valve spring effect and on move, cause auxiliary valve core lower end core print to move and reduced the fluid that flows into secondary valve insertion to closing direction, so secondary valve insertion pressure reduces, the hydrodynamic pressure that injects the main film below through surge pipe reduces thereupon, so main film is recessed, under the elastic force acting in conjunction of main valve spring, move down with the main valve plug that is bound up above the main film, flow to dirty section the corresponding minimizing of fluid through main valve by upper flow section, the pressure controlled decline of dirty section fluid, so also reduce thereupon through returning the pressure that the feedback pipe passes to the pressure membrane below inner chamber of controlling mechanism, when the pressure on acting on pressure-sensitive diaphragm keeps balance mutually with the elastic force of regulating spring, auxiliary valve core and main valve plug all maintain on certain keying position, regulate and be controlled on the setting value by upper flow section the utility model to dirty section the hydrodynamic pressure of flowing through, this can be installed on ducted pressure gauge from matching with it and obtain, when needs change dirty section pressure, only need the rotation adjusting screw just can realize.When not needing long-time accommodating fluid medium, returning the feedback pipe pressure increases, and auxiliary valve core moves to closing direction, and pressure is let out back by relief tube, makes main valve remain on needed pressure relief value or closes fully.When auxiliary valve core is designed to open type, promptly be designed to the passage that ball-valve structure is arranged suitable for reading between main valve first half cavity and the secondary valve insertion, then the pressure of the preceding upper flow section of main valve will be regulated and control to the utility model, and its adjustment process is just in contrast.The self-powering type pressure regulator that the utility model is implemented to obtain is tried out in petrochemical industry, metallurgical, food, spin worker etc. and need the gas of automatic holding temperature in the pipeline below 250 ℃, steam, oil, the production pipe-line system of the pressure given value of water or other fluid, be subjected to affirming and favorable comment of user, reflect following advantage: 1. regulate and control owing to having adopted novel film cell structure to substitute the piston valve spindle structure, avoided the stuck phenomenon of the dirt in the flowing medium to piston valve spindle, thereby improved functional reliability significantly and prolonged working life, surpass 100,000 hours average life on probation through many places, improved ten several times the working life of the piston valve spindle structural pressure regulator that this just may stuck phenomenon occur and lose efficacy than moving hundreds of hours.2. make film chamber body be positioned at the main valve body below owing to adopting main valve handstand to install.In structural design, make the following face of being of main film and pressure membrane by fluid effect impression face, in the occasion that is used in fluid with suitable high temperature, condensation portion just will inevitably accumulate in the cavity of film below in the fluid, thereby reduced the temperature that diaphragm bore, to improving the functional reliability and the immeasurable effect that increased the service life.3. owing to surge pipe, relief tube have all adopted external bind mode, made things convenient for the maintenance dismounting, also played good action improving functional reliability and increasing the service life.The utility model can be at certain setting value of 20～1300KPa by the adjusting of adjusting screw, pressure to the fluid below 250 ℃ in the pipeline is regulated and is controlled, thereby the petrochemical industry of being widely applicable for, spins industries such as worker, metallurgy, food, the energy, medicine.

Fig. 1 is the schematic representation that meets the utility model theme.

In conjunction with Fig. 1, implementation detail of the present utility model is described below: adopt metallic material through casting, processes such as gold machining become main valve body 1-1, main valve plug 1-2, main valve spring 1-3 constitutes main valve 1, auxiliary valve body 2-1, auxiliary valve core 2-2, secondary valve spring 2-3 constitutes secondary valve 2, controlling mechanism body 3-1, pressure membrane 3-2, regulate spring 3-3, adjusting screw 3-4, return feedback interface tube 3-5 and constitute controlling mechanism 3, the secondary valve 2 of assembling on main valve 1, on secondary valve 2, assemble controlling mechanism 3 and form the utility model, as shown in Figure 1, feature of the present utility model is to be equipped with in the bottom of main valve body 1-1 joint group to adopt metallic material through casting, the film chamber 1-4 that gold machining technology etc. is made, be fixed with the main film body 1-5 that metallic material is made among the body 1-4 of film chamber, main film 1-5 is two-part cavity up and down with film chamber body sealed separation, be fixed in the lower end of main valve plug 1-2 above the impression face of main film 1-5, and the main valve spring 1-3 that is loaded on main valve plug 1-2 upper end with joint group matches, membrane type body 1-4 upper shed under the impression face of main film 1-5 is connected with surge pipe 1-6, the other end opening of surge pipe 1-6 is connected on the auxiliary valve body 2-1, and the lower cavity of main film 1-5 is communicated with secondary valve pocket among the auxiliary valve body 2-1; Go back opening on the auxiliary valve body 2-1 and be connected with relief tube 2-4, the other end opening of relief tube 2-4 is connected on the main valve body 1-1, secondary valve insertion among the auxiliary valve body 2-1 is communicated with main valve inner chamber Lower Half among the main valve body 1-1, the lower end core print of auxiliary valve core 2-2 opens and closes in the main valve chamber in main valve body 1-1 versatilely, auxiliary valve core 2-2 makes the gap that main valve chamber is communicated with secondary valve pocket near between lower half portion core bar of lower end core print and the guide sleeve, can cross section gold machining one-tenth with the guide sleeve cross section different shape of main valve 1 with secondary valve 2 joining part core bars will be positioned at during concrete enforcement, be generally circle as the guide sleeve cross section, then the cross section of this part core bar is processed into triangle and has just been realized above-mentioned requirements, when auxiliary valve core 2-2 moved down and makes its underpart leave the guide sleeve end opening, upper half part cavity of main valve 1 promptly communicated with the cavity of secondary valve 2 with the gap of guide sleeve through this core bar; Auxiliary valve core 2-2 upper half part, be to closely cooperate between this part the bar core that connects of secondary valve 2 and controlling mechanism 3 and the guide sleeve, and the upper end part of the auxiliary valve core 2-2 cooperation that contacts with pressure membrane 3-2 in being fixed in controlling mechanism body 3-1 inner chamber, promptly under the elastic force acting in conjunction of secondary valve spring 2-3 and adjusting spring 3-3, auxiliary valve core 2-2 all the time with the epirelief of pressure membrane 3-2 or recessed and on move or move down, play the effect of closing or opening main valve 1 upper half part cavity and secondary valve 2 cavitys; Be manufactured with on the controlling mechanism body 3-1 of pressure membrane 3-2 impression face below opening connect return feedback effective return feedback interface tube 3-5, return the feedback pipe and be into certain slope and be connected in the pipe special that returns the feedback downstream pressure that is equivalent to the dirty place of pipe diameter several times distance apart from main valve 1; The top cooperation of pressure membrane 3-2 impression face is linked with regulates spring 3-3, regulate spring 3-3 top and be linked with adjusting screw 3-4, pressure membrane 3-2 is separated into upper and lower two-part cavity with controlling mechanism body 3-1 bore seal during making, can only from bottom to top act on pressure membrane 3-2 from returning the fluid that feedback interface tube 3-5 enters controlling mechanism 3 inner chamber bottoms; For the ease of installing and overhauling, aforementioned surge pipe 1-6, relief tube 2-4 have all adopted screw socket to be connected on the corresponding interface of main valve body 1-1 and film chamber body 1-4, auxiliary valve body 2-1.When the Lower Half of auxiliary valve core 2-2 is made into ball-valve structure shown in A figure in the upper right corner among Fig. 1, will become regulate and the control main valve before the embodiment of hydrodynamic pressure.

Claims (5)

1, a kind of main valve 1 that constitutes by main valve body 1-1, main valve plug 1-2, main valve spring 1-3, the secondary valve 2 that auxiliary valve body 2-1, auxiliary valve core 2-2, secondary valve spring 2-3 constitute, controlling mechanism body 3-1, pressure membrane 3-2, regulate spring 3-3, adjusting screw 3-4, return the self-operated regulator that controlling mechanism that feedback interface tube 3-5 constitutes is formed, feature of the present utility model is:

--the bottom of valve body 1-1 is linked with the lower end of being fixed in main valve plug 1-2 above the impression face that is fixed with main film 1-5, main film 1-5 among film chamber body 1-4, the film chamber body 1-4 and matches with the main valve spring 1-3 that is linked in main valve plug 1-2 upper end, film chamber body 1-4 upper shed under the impression face of main film 1-5 is connected with surge pipe 1-6, and the other end opening of surge pipe 1-6 is connected on the auxiliary valve body 2-1;

--go back on the auxiliary valve body 2-1 that opening is connected with relief tube 2-4, relief tube 2-4 and has that the other end opening is connected in that main valve body 1-1 goes up, the lower end core print of auxiliary valve core 2-2 opens and closes in the main valve first half cavity in main valve body 1-1 versatilely, auxiliary valve core 2-2 has near design between lower half portion core bar of lower end core print and the guide sleeve makes the gap that communicates in main valve 1 inner chamber and secondary valve 2 inner chambers, closely cooperate between auxiliary valve core 2-2 upper half part core bar and the guide sleeve and the upper end portion cooperation that contacts with pressure membrane 3-2 in being fixed in controlling mechanism body 3-1 inner chamber;

--the controlling mechanism body 3-1 of pressure membrane 3-2 impression face below go up design have with need to regulate and the pipeline fluid of control communicates returns feedback interface tube 3-5, cooperate above the pressure membrane 3-2 impression face be linked with regulate spring 3-3, adjusting spring 3-3 top is linked with adjusting screw 3-4.

2,, it is characterized in that main film 1-5 becomes two-part film chamber up and down with film chamber body 1-4 sealed separation by the pressure regulator of claim 1 regulation.

3,, it is characterized in that pressure membrane 3-2 is separated into two-part up and down with the regulator bore seal by the pressure regulator of claim 1 regulation.

4, the pressure regulator of stipulating by claim 1, it is characterized in that auxiliary valve core 2-2 has the gap that main valve 1 inner chamber is communicated with secondary valve 2 inner chambers near design between lower half portion core bar of lower end core print and the guide sleeve, adopt core bar cross section and guide sleeve cross section difformity, as the guide sleeve cross section is circular, and then this part core bar Cross section Design triangularity realizes.

5,, it is characterized in that auxiliary valve core 2-2 lower half portion is designed to the ball-valve structure that main valve body 1-1 first half cavity and auxiliary valve body 2-1 inner chamber communicate or close by the pressure regulators of claim 1,2,3 regulations.