CN2048921U - Manual integrated ball check for tri-valve set - Google Patents

Abstract

The utility model relates to a manual integrated ball valve for tri-valve sets, which is an integrated valve for tri-valve sets used by directly matching with an electronic type differential pressure transmitter. The manual integrated ball valve for tri-valve set is composed of an upper valve body, a lower valve body, a valve plug and a hand wheel. The upper valve body is connected with the lower valve body through screw bolts to form a valve body with a spherical valve plug cavity; the valve plug is spherical, the valve plug is arranged in the valve plug cavity, and the hand wheel can be controlled by the valve plug to enable the hand wheel to rotate in the valve plug cavity. A valve body channel and a valve plug channel which are mutually matched are respectively arranged in the working faces of the valve body and the valve plug; when the different working faces are selected by rotating the valve plug by the hand wheel, the tri-valve sets are corresponding to the three communication state of the differential pressure transmitter. Tri-valve sets are replaced by the utility model, and the utility model can be used by directly matching with the differential pressure transmitter.

Description

Manual Integrated ball check for tri-valve set

The utility model relates to a kind of and the direct matching used three valve group one valves of electronic type differential pressure transmitter.

So-called three valve groups are meant one group of three stop valve that is used with differential pressure transmitter and throttling arrangement in measurement and automatic regulating system, be usually used in flow, pressure, pressure reduction, negative pressure and the open containers of continuous measurement fluid or the interface location etc. of liquid level, proportion, density and two kinds of liquids having different specific weights of liquid in the pressure-vessel, the typical Placement of its measuring system as shown in Figure 1.Negative pressure valve among the figure, positive valve and equilibrium valve are identical three stop valves, because differential pressure transmitter must be used with these three stop valves simultaneously, so all these three stop valves are made an integral body usually, be called three valve qi road valve groups, be called for short three valve groups.Have four on the valve body of three valve groups and connect mouth, 1. 2. 3. 4. be connected with four pipelines.The program that adopts three valve set systems to measure fluid flow is: a, original state, three stop valve Close Alls; Equilibrium valve and positive valve or negative pressure valve are opened in b, zero-bit adjustment; C, differential pressure transmitter put into operation, close equilibrium valve, open positive valve and negative pressure valve; D, measurement finish, and make system be returned to original state, i.e. three stop valve Close Alls.Obviously, three valve groups and differential pressure transmitter are used when measuring fluid flow, and three valve groups need three kinds of operating modes, and with the corresponding pipeline connection state of these three kinds of operating modes be: 4. 3. 2. 1. (1) pipeline be not communicated with entirely; (2) 1. 3. 4. or 2. 3. 4. be communicated with; (3) 1. and 3., 2. and 4. be communicated with respectively.Though three stop valves in the three valve groups are made an integral body, its operation is still mutually independently, so three valve group one valves still need three operation handwheels.Because the operation of three stop valves is mutually independently, thus can not be fully synchronously, and the synchronism that pipeline switches also just can't guarantee, and misoperation might occur.Chinese patent CN85103570 discloses a kind of multiple way and multiple switching valve that replaces three valve groups, and this switching valve is made up of upper and lower valve body, valve plug and the valve rod that has a drive unit; Upper and lower valve body connects a synthetic spherical valve plug chamber relatively by bolt, and spherical valve plug promptly is installed in the valve plug chamber and can drives its rotation by valve rod; Have valve channel and valve plug passage on valve body and the valve plug working surface, be switched pipeline and promptly join by valve channel and valve passage, rotation valve rod drives the valve plug rotation can change operating mode; Three working surfaces (A-A, B-B and C-C) of valve plug are mutually 60 °, have specific passage on B-B face wherein and the C-C face.Though this multiple way and multiple switching valve can replace three valve groups and can realize the synchronous switching on multitube road, but because the channel position on the valve plug working surface is unreasonable, make valve body positive output passage and valve body negative output passage be positioned at the both sides of switching valve, thereby can't be directly supporting with the electronic type differential pressure transmitter.

The purpose of this utility model is that design is a kind of can be directly and the direct matching used manual three valve group one ball valves of electronic type differential pressure transmitter.

To achieve these goals, channel position on the utility model appropriate change valve plug working surface makes valve body positive output passage and valve body negative output passage in the same side of switching valve and make distance between its collar extension equal distance between directly supporting with it electronic type differential pressure transmitter two interfaces; Simultaneously, on the valve rod of switching valve, install one and be used for positioning device definite and sign valve plug working surface.Be described in further detail below in conjunction with the technical characteristics of specific embodiment the manual three valve group one ball valves of the utility model.

Accompanying drawing 2 is the structural representation of manual three valve group one ball valves;

Accompanying drawing 3 is the plan view of valve plug;

Accompanying drawing 4 is a valve plug A-A working surface sectional view.

Accompanying drawing 5 is a valve plug B-B working surface sectional view;

Accompanying drawing 6 is a valve plug C-C working surface sectional view.

With reference to the accompanying drawings 2,3,4,5 and 6, the utility model is mainly by upper valve body 1, valve body 2, valve plug 3 and handwheel constitute down.Have an identical hemisphere valve plug chamber on upper valve body 1 and the following valve body 2, upper and lower valve body connects a synthetic spherical valve plug chamber relatively by bolt 4, and the junction point of upper and lower valve body is by seal washer 5 reliable sealings.Both sides, upper valve body valve plug chamber have valve body positive input passage 6 and the valve body positive output passage 7 that communicates with the valve plug chamber; Both sides, following valve body valve plug chamber have negative input channel 8 of the valve body that communicates with the valve plug chamber and valve body negative output passage 9; The internal orifice of above-mentioned four valve channels lays respectively on two axis by center, valve plug chamber.Have a valve rod hole on the upper valve body wall perpendicular to valve plug chamber sphere, this valve rod hole is positioned on valve body positive input passage internal orifice and the formed circumference bisector of angle of valve body positive output passage internal orifice, valve body positive output passage and valve body negative output passage are positioned at the same side of valve body, and the distance between its collar extension equals with it the distance between directly supporting electronic type differential pressure transmitter two interfaces.Valve plug 3 is spherical, is installed in the spherical valve plug chamber in the valve body and also can rotates around vertical axis therein; Be mutually on 60 ° the coaxial working surface (A-A face, B-B face and C-C face) at three by rotation axis and have the valve plug passage that communicates and match with the valve plug chamber, all adopt seal washer 11 reliable sealings between four valve channel internal orifices and the valve plug sphere with positive and negative input channel of valve body and the positive and negative output channel of valve body.Valve plug passage on the B-B working surface is the T shape passage that is made of positive valve plug passage and negative valve plug passage, positive valve plug passage 12 is the linear path of passing the valve plug centre of sphere and being positioned at B-B working surface I, III quadrant, negative 13 in valve plug passage be positioned at B-B working surface IV quadrant and with the positive valve plug passage 12 vertical linear path that communicate, intersection point is positioned at centre of sphere place.Valve plug passage on the C-C working surface comprises the negative valve plug passage 15 of the positive valve plug passage 14 of not connected V-arrangement and V-arrangement, lays respectively at the first half of C-C working surface and Lower Half and is symmetrically distributed with respect to vertical shaft and horizontal axis.Handwheel is made of valve rod 16 and handle 17; The lower end of valve rod is passed and is fixed together with valve plug 3 behind the valve rod hole on the upper valve body and can rotates in valve rod hole, adopts the seal washer reliable sealing between valve rod and the valve body wall; The other end of valve rod 16 links to each other with handle 17; The positioning device 18 of determining and indicating the valve plug working surface also is installed on the valve rod 16.Obviously, Joystick can make valve rod drive valve plug and rotate, and three working surfaces of valve plug are overlapped with the valve channel cross section successively.When the A-A face overlapped with the valve channel cross section, 4. 3. 2. 1. pipeline do not communicate entirely, and this is the original state of three valve groups.Valve plug is turned over 60 ° of angles, and when the B-B face was overlapped with the valve channel cross section, 4. 3. 4. or 2. 3. 1. pipeline be interconnected, and this is three a valve groups zeroing state.When valve plug was continued to turn over 60 ° of angles again, the A-A face of valve plug overlapped with the valve channel cross section again, and three valve groups are returned to original state again.

The utility model also can be directly and the supporting use of electronic type differential pressure transmitter except that whole advantages with multiple way and multiple switching valve and characteristics.

Claims (1)

1, the direct matching used manual three valve group one ball valves of a kind of and electronic type differential pressure transmitter are made of upper valve body, following valve body, valve plug and handwheel; Have an identical hemisphere valve plug chamber on described upper valve body and the following valve body, on, following valve body connects a synthetic spherical valve plug chamber relatively by bolt, on, the junction point of following valve body is by the seal washer reliable sealing, both sides, upper valve body valve plug chamber have valve body positive input passage and the valve body positive output passage that communicates with the valve plug chamber, both sides, following valve body valve plug chamber have negative input channel of the valve body that communicates with the valve plug chamber and valve body negative output passage, the internal orifice of four valve channels lays respectively on two axis by center, valve plug chamber, one valve rod hole perpendicular to valve plug chamber sphere is arranged on the upper valve body wall, and this valve rod hole is positioned on valve body positive input passage internal orifice and the formed circumference bisector of angle of valve body positive output passage internal orifice; Described valve plug is spherical, be installed in the spherical valve plug chamber in the valve body and also can rotate around vertical axis therein, at three coaxial working surface (A-A faces that are mutually 60 ° by rotation axis, B-B face and C-C face) on have the valve plug passage that communicates and match with the valve plug chamber with positive and negative input channel of valve body and the positive and negative output channel of valve body, all adopt the seal washer reliable sealing between four valve channel internal orifices and the valve plug sphere; Described handwheel is made of valve rod and handle, and the lower end of valve rod is passed and is fixed together with valve plug behind the valve rod hole on the upper valve body and can rotates in valve rod hole, adopts the seal washer reliable sealing between valve rod and the valve body wall, and the other end of valve rod links to each other with handle; Feature of the present utility model is to have positive valve plug passage and the negative valve plug passage that communicates on the B-B of described valve plug working surface, positive valve plug passage is for passing the valve plug centre of sphere, and be positioned at the linear path of B-B working surface I, III quadrant, negative valve plug passage be positioned at B-B working surface IV quadrant and with the linear path of positive valve plug channel vertical, intersection point is positioned at centre of sphere place; Have positive valve plug passage of V shape and the negative valve plug passage that is symmetrically distributed with respect to vertical shaft and horizontal axis respectively in the first half of C-C working surface and Lower Half; Described valve body positive output passage and valve body negative output passage are positioned at the same side of valve body, and the distance between its collar extension equals with it the distance between directly supporting electronic type differential pressure transmitter two interfaces; The positioning device of determining and indicating the valve plug working surface is installed on the described valve rod.

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